How To Choose A Underground Water Leak Detector

The underground water leak detector is mainly used to detect the leakage of buried tap water pipelines, and the listening instrument to locate the leakage point can also be used to locate the leakage point of other liquids and gases. With pointer, cursor, audio, digital display methods. Small size, light weight, easy to carry, while choosing a groundwater leak detector requires special attention.

The underground water leak detector should choose high resolution. Simply put, it is the exact number of digits detected, such as 1Pa or 0.1pa. There are many resolution units, such as Pa, ml / min, etc. Choose according to your product testing requirements. Accuracy testing of groundwater leak detectors is required. The first meaning of precision is accuracy. For example, shooting can directly hit the bullseye. The second meaning is the allowable deviation range. The size of the bull's eye area is the same as hitting the bull's eye, and the accuracy of hitting a small area of the bull's eye is high.

Underground water leak detector require multiple repetitive tests. This is the most important index, which can reflect the comprehensive performance of the instrument. The so-called repeatability refers to the consistency of the data displayed by the instrument under the same ambient temperature and the same test pressure. The choice of groundwater leak detector depends on the strength of the manufacturer, and the overall strength of the business can be comprehensively judged from the aspects of the quality of sales staff, market share, and customer strength.

Do You Know The Calibration Of The Gas Detector?

By placing the instrument in the corresponding test gas of known concentration and comparing the detection result of the gas detector with the gas concentration, the gas detector can be calibrated to understand the accuracy of the gas detector. For example, n-hexane burns and explodes when the VOL content is 1.1%. If a 10% alarm is set on the hexane detector, an alarm will be triggered when the hexane concentration reaches 0.1%. For catalytic combustion sensors, this concentration is very low. The alarm value of toxic gas is much lower than that of combustible gas. For chlorine, the threshold alarm value is only 0.5 ppm.

The difference between the measurement result of the recalibrated gas detector and the measured gas concentration is usually less than 10%, so the instrument can be used without calibration. For example, the ammonia gas detector detects 50 ppm standard ammonia gas. If the measurement result of the instrument is 46ppm, 46ppm is 50±10%X50, and the result is 45~55ppm, it can be considered that the detection accuracy of the ammonia detector can be certified without recalibration. I will. Similarly, if the detection result of this ammonia gas detector is 44ppm, it must be recalibrated before using this detector.

Advantages Of Pipe Inspection Crawler Camera Non-destructive Inspection

The urban underground pipeline network includes urban water supply, drainage, electricity supply, natural gas supply and communications. It is an important part of urban infrastructure. The underground pipeline network is the "ship" and "nerve" of the city, and also the lifeline of the city. With the rapid development of urban construction, China has increased the development and utilization of underground space in recent years. More and more underground pipe networks have been laid in cities. However, due to the large number of property units involved and the lack of unified standardized management, data in the underground pipeline network is inconsistent and the underground pipeline network is unknown. Because the underground pipe network is hidden, the actual location and depth of the pipe network cannot be determined. The underground pipeline network is sometimes damaged during construction. Construction management and old city reconstruction have brought hidden dangers.



If the pipeline is not tested, repaired and cleaned in time, it may cause accidents and cause unnecessary losses. However, the environment where the pipeline is located is usually not easy to reach directly or people are not allowed to enter directly, so it is difficult to detect and clean. Therefore, one of the most effective methods is to use pipe inspection crawler camera to realize online pipeline inspection, maintenance and cleaning.



The pipe inspection crawler camera consists of a controller, a crawler, a high-definition camera and a cable car. During operation, the controller is mainly controlled by the controller to control the crawler equipped with detection equipment to enter the detection pipeline. During the inspection process, the pipeline inspection crawler camera robot can transmit video images of the internal conditions of the pipeline in real time for professional maintenance personnel to analyze the internal failure of the pipeline.



Advantages of using robot nondestructive testing for underground pipeline inspection:



1. High security. Use the pipeline to check that the crawler camera robot enters the pipeline to find out the internal condition of the pipeline or eliminate the hidden danger of the pipeline. If it is manual operation, there are usually greater safety hazards, and the labor intensity is high, which is not conducive to the health of workers. The intelligent operation of the pipeline robot of Shandong China Coal Group can effectively improve the safety performance of the operation.



2. Save labor. The pipe inspection crawler camera is small in size and light in weight. It can be operated by one person. The controller can be installed on the vehicle, saving labor and space.



3. Improve efficiency and quality. Shandong China Coal Group's pipeline inspection crawler camera robot has intelligent operation and precise positioning, and can display date and time, crawler inclination (pipeline slope), air pressure, crawling distance (measurement line), laser measurement results, and azimuth angle (optional ). The display status of these information can be set through the function keys. Camera angle clock display (location of pipeline defect).



4. High protection level. The camera protection grade is IP68, which can be used at a water depth of 5 meters, and the crawler protection grade is IP68, which can be used at a water depth of 10 meters. It has air-tight protection, waterproof and anti-rust materials, so there is no need to worry about quality issues, because Shandong China Coal Group only Good pipeline inspection crawler camera robot.



5. High-precision cable reel, telescopic cables do not affect each other, and the length is optional. The pipeline inspection crawler camera robot is suitable for various pipelines with a diameter of 100mm-2000mm. It can not only improve the accuracy of operation, but also save labor and improve production efficiency. In addition, it is easy to identify the internal factors of the pipeline and maintain the pipeline in certain environments that are not suitable for manual operation. .

With the help of pipeline inspection crawler camera robots, faults and damages in the pipeline can be easily found, which not only saves manpower, but also reduces the amount of construction and greatly improves work efficiency. It will become the main trend of China's pipeline network inspection, and the application of pipeline inspection crawler camera robots in the national pipeline network census is also an inevitable choice.

How To Deal With Scraper Winch Vibration?

AboutScraper Winchproblems, early detection and early treatment is the best way to deal with it, and the Scraper Winch machine vibration introduced to you this time is a Scraper Winch problem with serious hidden dangers. The phenomenon is obvious and easy to find. You should find a professional to stop maintenance an examination.

The conditions that a high-qualityScraper Winchshould have The quality and services that a high-quality Scraper Winch should have are as follows: Scraper Winch purchases before leaving the factory, advanced technical equipment consumption, Scraper Winch has many accessories, including motor, base, brake installation, roller, connection Installation, planetary gears, etc. The reason why there are so many accessories.

The working principle ofScraper Winchis simple. The addition of other Scraper Winch accessories on this basis is to make the work of Scraper Winch safer, more convenient, and have a longer service life. Causes of vibration: Scraper Winch vibrations are mostly caused by the reason that the axis line of the coupling between the components is not concentric. Scraper Winch vibration may also be due to the reason why the anchor bolts are not strong enough.

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Development And Innovation Of Double Drum Hoist Winch Industry

Double Drum Hoist Winch industry development and innovation, Xuzhou Shuangying Mine Equipment Co., Ltd. provides you with the best quality winch, dispatch winch, hoist winch, rake bucket loader, jd dispatch winch, Pb rake bucket loader, jhDouble Drum Hoist Winch and other professional mining equipment, the company's products are exported to all parts of the country, received unanimous praise from the industry, maximize the value of customer service, the most dedicated service to customers, with a win-win corporate purpose, provide the most intimate after-sales service, the most perfect Winch safety technical information, text:

China Coal Group is a professional manufacturer of winches, dedicated to winch production for more than ten years, with the purpose of production and sales based on integrity and quality first, supplying the best quality Mine Winch, Dispatch Winch, Scraper Winch to the majority of mining enterprises , Double Drum Hoist Winch, Underground Mining Winch, Shaft Sinking Winch, Mining Scraper Winch, Underground Mining Scraper Winch, Winch Mining, Mining Hoist Winch, Winch, etc.

Double Drum Hoist Winch development process and innovation

Double Drum Hoist Winch industry competition is becoming increasingly fierce, and raw material prices remain high, which also makes some companies use inferior raw materials, reduce prices and reduce quality, and their product quality cannot be guaranteed at all.

Although the price war is not as fierce as before, it still exists. More companies use price strategies to squeeze the same market at home or abroad. Undoubtedly, Wangmei quenches thirst, and finally loses all.

It is reported that how to maintain the healthy development of the Double Drum Hoist Winch industry must be controlled from the source of the Double Drum Hoist Winch market, aiming at the high-end market gradually becoming the development strategy of the enterprise, strengthening the self-discipline of the production enterprise's own behavior, and strictly controlling the raw materials to the production process. Control, to ensure the stability of product quality, but also depends on whether it is environmentally friendly.

Through efforts to improve product technology content and increase independent innovation, in order to achieve the road of sustainable development.

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Have You Done The Preparation Work For The Scraper Winch Before It Starts

Scraper winch is a kind of power traction tool widely used in coal mine, so before starting scraper winch, are you ready? Let's take a look

1. Check the scraper winch top bond and bracket, and knock the bond and ask for the top.

2. Whether the scraper winch is stable, whether all screws are loose, and whether there is water dripping on the body and switch.

3. check whether the electrical circuit and switch are complete and in good condition.

4. check whether the scraper winch brake part is flexible and reliable, and whether the body bolts are tight.

5. check whether there is any obstacle in the harrow transportation channel, whether the connection between the wire rope and the harrow bucket, whether the pulley suspension bolt and the harrow bucket are installed firmly, and whether the pulley is flexible and fastened. Whether the wire rope is twisted or broken.

6. Rotate the rotating part by hand for 2-3 revolutions, and start the scraper winch after it is flexible and free of jamming. Run the machine for 1 minute without any load to understand the operation of the scraper winch

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Scraper Winch Technical Index

Scraper Winch is a type of winch that is powered by a piston pneumatic engine and is operated by hand or remotely. Scraper winch has the characteristics of small volume, light weight, high efficiency, simple operation, easy handling, safe and reliable and so on. Scraper winches can be used for lifting or hauling heavy objects in places such as land drilling, offshore drilling platforms, mine drilling, ships and flammable gases.

Technical Index of Scraper Winch

High tensile force: 50KN; large rope speed: 35M / MIN; rated intake air pressure: 0.80MPA; rated gas consumption 18.3m3 / min; rope capacity: 140M; wire rope diameter: 20mm (3/4 in); weight: 550KG

The mine scraper winch has advanced level, adopts stepless speed change, has the characteristics of easy operation, stable operation, compact structure, and has the function of self-locking for parking, which is reliable in use. Suitable for places with flammable and explosive gases, it is an ideal equipment for oil fields, well sites and hoisting.

Causes And Elimination Methods Of Black Smoke Emission From Diesel Engine Cranes

The black exhaust from the diesel engine crane indicates that the diesel is not completely burned. It includes continuous black smoke emission and intermittent black smoke emission. So, what is the main reason for the black smoke emitted by diesel engine cranes? The following are three points and troubleshooting methods summarized by Shandong China Coal Group.


the first. Low compression pressure of hydraulic crane cylinder


1. The compression ratio of the small agricultural diesel engine crane is adjusted too small during assembly, so the compression force of the assembled diesel engine is often lower than 25MPA, and black smoke in the exhaust gas will appear.


2. After installing the fuel injector, the air leakage between the cylinder head and the cylinder liner of the Jining diesel engine crane is not compressed.


3. The wear of the piston, piston ring and cylinder liner of the small diesel engine crane exceeds the limit, which causes the compressed air in the cylinder to leak into the crankcase and reduces the compression pressure of the cylinder.


4. When assembling the piston rings of a small diesel engine crane, the openings of these rings cannot be staggered, or the piston ring is broken and stuck in the ring groove, etc., which will cause the cylinder to leak.


5. Normally, the valve rod is bent, the spring is broken, and the valve seat ring becomes loose and falls off, causing air leakage in the cylinder.


6. Due to the excessive adjustment of the valve clearance or excessive wear of the valve bridge, the insufficient valve opening affects the fresh air entering the cylinder or the exhaust gas in the cylinder.


7. The temperature of the oil and water of the small diesel engine crane is too low, so the gap between the cylinder liner and the piston is too large, resulting in air leakage.

The low compression force of the cylinder causes black smoke to be emitted, which is mainly due to the low compression pressure which causes the mixture of diesel and air to not fully burn in the combustion chamber of the diesel engine. Therefore, the common faults that cause black smoke should be eliminated one by one, such as eliminating valve closing, adjusting valve clearance, adjusting injection pressure and injector atomization, replacing piston rings or adjusting relative positions. Between the openings. 3. Replace worn cylinder liners to eliminate cylinder leakage.

JTP Series single Drum Mining Hoist Winch

JTP Series single Drum Mining Hoist Winch are mainly used for mine shaft and inclined shaft to lift coal,ore,waste rock as well as lifting personal,materials,tools and equipment. The principle axis unit used split or integral-type flexibl
Instructional drum and the drum suffers force uniformly with big strength. Disc brakes are rear-mounted fuel tank
with flexible action. The hydraulic can delay secondary brake,and it can be automatically released in wellhead .
JTP Series Single Drum Mining Hoist Winch has rope-adjusting clutch with radial teeth.Transmission parts can be equipped
with planetary reducer or parallel axis hardened reducer.Electrical parts has necessary protection and interlock ;
device,and user can choose PLC electrical controller and frequency speed-changing electrical controller.
Dynamic braking is also available on request.

How To Choose A Underground Water Leak Detector

The underground water leak detector is mainly used to detect the leakage of buried tap water pipelines, and the listening instrument to locate the leakage point can also be used to locate the leakage point of other liquids and gases. With pointer, cursor, audio, digital display methods. Small size, light weight, easy to carry, while choosing a groundwater leak detector requires special attention.

The underground water leak detector should choose high resolution. Simply put, it is the exact number of digits detected, such as 1Pa or 0.1pa. There are many resolution units, such as Pa, ml / min, etc. Choose according to your product testing requirements. Accuracy testing of groundwater leak detectors is required. The first meaning of precision is accuracy. For example, shooting can directly hit the bullseye. The second meaning is the allowable deviation range. The size of the bull's eye area is the same as hitting the bull's eye, and the accuracy of hitting a small area of the bull's eye is high.

Underground water leak detector require multiple repetitive tests. This is the most important index, which can reflect the comprehensive performance of the instrument. The so-called repeatability refers to the consistency of the data displayed by the instrument under the same ambient temperature and the same test pressure. The choice of groundwater leak detector depends on the strength of the manufacturer, and the overall strength of the business can be comprehensively judged from the aspects of the quality of sales staff, market share, and customer strength.

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http://www.chinacoalgroup.com/

The Main Structure Of The Cement Mixer

The equipment of cement mixer is a building material manufacturing equipment composed of five major systems including mixing host, material weighing system, material conveying system, material storage system, control system and other auxiliary facilities. If it's some first-time contact friends, it may sound obscure. In short, the equipment of cement mixer is mainly composed of mixer, feeding system and weighing equipment set up.

The main principle of its work is to use cement as cementitious material, mix and mix sand, lime, cinder and other raw materials, and finally make it into concrete, which is used as wall material for construction and production. Since the concrete mixing plant was put into use, it has been playing an important role in the building materials industry in China, which is also determined by the superior characteristics of the concrete mixing plant itself.

The equipment of the cement mixer is mainly divided into four parts: sand feeding, powder feeding, water and admixture feeding, transmission mixing and storage. The whole body of the equipment is cast with integral steel structure. The high-quality H-shaped steel not only has a beautiful appearance, but also strengthens the overall structural strength of the concrete mixing station. The equipment is easy to install and can be applied to various complex topographical structures.

The equipment of the cement mixer has good mixing performance. The equipment adopts the screw type double horizontal shaft forced mixing main machine, which can not only make the mixer strong, but also achieve good mixing effect for the dry and hard, plastic and various proportions of concrete. The mixing is even and the efficiency is high.

The equipment of cement mixer not only has excellent mixing host, but also has various excellent accessories, such as screw conveyor, metering sensor, pneumatic components, etc., which ensure the high reliability, accurate metering skills and long service life of concrete mixing station in the operation process. At the same time, each maintenance part of the concrete mixing station is equipped with a walking platform or inspection ladder, and has enough control space. The mixing machine can be equipped with a high-pressure automatic cleaning system, with the function of oil shortage and over temperature automatic alarm, which is convenient for equipment maintenance.

The equipment of the cement mixer has good environmental protection function. During the operation of the machine, the operation of the powder is carried out in the full blocking system. The dust tank adopts the high-efficiency dust collector / mist spray method to greatly reduce the environmental pollution caused by the dust. At the same time, the concrete mixing station adopts the silencing device to effectively reduce the noise pollution of the air exhaust and discharge equipment of the pneumatic system.

The products of China Coal Group, such as cement mixer series, large-scale concrete mixing station, small and medium-sized concrete mixing station, stabilized soil mixing station series, engineering concrete mixer, concrete batching machine, auxiliary equipment of concrete mixing station, civil concrete mixer, are of high quality, affordable, well received by users, reasonable price, and warmly welcomed Big new and old customers come to discuss purchase.

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How To Solve Common Faults In The Material Conveying System Of Rubber Paver Machine

The rubber paver machine is now very popular, and the normal operation of each system of the equipment determines the overall efficiency of the equipment. The conveyor system of the paver is often a problem-prone part. Let's take a look at how to solve the common failures of the conveyor system of the rubber paver machine.
The conveying system of the paver is an important part of its working device. If the conveying system fails during the rubber paver machine paving construction process, it must be stopped for repair. Therefore, the reliability and stability of the work of the paver conveyor system is very important. In order to avoid the failure of the paver conveyor system during the construction process, it should be controlled during the manufacturing process.
And what I want to tell you today is the feed shaft. Of course, we also call it the scraper drive shaft. Let's take a look at the basic principle of the conveyor shaft: the scraper conveyor shaft of the paver is used to transport all the materials needed for the paving layer. The conveying capacity, working stability and service life of the scraper conveyor shaft directly reflect the performance index of the paver. Reasonable scraper conveying system structure can bring convenience to users for use and maintenance.
After introducing the function and principle, let's talk about its importance. Don't look at it as a small accessory, but this feeding shaft is still very critical. Due to the relatively complicated conveying system of the paver, during the construction process, the conveying shaft is particularly prone to failure, and failure will cause construction difficulties and affect the construction schedule. This is the most annoying.
In order to reduce and reduce the occurrence of this situation, many people are looking for this root cause. Finally, the cause of the failure of the paver's conveying system has finally been found! The reason lies in the quality of the feed shaft itself. If the quality is good, then the probability of failure in the construction will be reduced, and if the quality is not good, the impact will be greater.
In general, the root cause of the failure of the conveyor system of the rubber paver machine is the conveyor shaft. Therefore, not only should the periodic maintenance of the feed shaft be done, but also the after-sales service of the manufacturer is also an important guarantee.

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Scraper Winch Machine Vibration Processing Method

About Scraper Winch problems, early detection and early treatment is the best way to deal with it, and the Scraper Winch machine vibration introduced to you this time is a Scraper Winch problem with serious hidden dangers. The phenomenon is obvious and easy to find. You should find a professional to stop maintenance an examination.

The conditions that a high-quality Scraper Winch should have The quality and services that a high-quality Scraper Winch should have are as follows: Scraper Winch purchases before leaving the factory, advanced technical equipment consumption, Scraper Winch has many accessories, including motor, base, brake installation, roller, connection Installation, planetary gears, etc. The reason why there are so many accessories.

The working principle of Scraper Winch is simple. The addition of other Scraper Winch accessories on this basis is to make the work of Scraper Winch safer, more convenient, and have a longer service life. Causes of vibration: Scraper Winch vibrations are mostly caused by the reason that the axis line of the coupling between the components is not concentric. Scraper Winch vibration may also be due to the reason why the anchor bolts are not strong enough.

If you are interested in this product,please kindly leave your whatsapp or email! I will send you  the price!!

Double Drum Hoist Winch Industry Development And Innovation

Double Drum Hoist Winch industry development and innovation, Xuzhou Shuangying Mine Equipment Co., Ltd. provides you with the best quality winch, dispatch winch, hoist winch, rake bucket loader, jd dispatch winch, Pb rake bucket loader, jhDouble Drum Hoist Winch and other professional mining equipment, the company's products are exported to all parts of the country, received unanimous praise from the industry, maximize the value of customer service, the most dedicated service to customers, with a win-win corporate purpose, provide the most intimate after-sales service, the most perfect Winch safety technical information, text:

China Coal Group is a professional manufacturer of winches, dedicated to winch production for more than ten years, with the purpose of production and sales based on integrity and quality first, supplying the best quality Mine Winch, Dispatch Winch, Scraper Winch to the majority of mining enterprises , Double Drum Hoist Winch, Underground Mining Winch, Shaft Sinking Winch, Mining Scraper Winch, Underground Mining Scraper Winch, Winch Mining, Mining Hoist Winch, Winch, etc.

Double Drum Hoist Winch development process and innovation

Double Drum Hoist Winch industry competition is becoming increasingly fierce, and raw material prices remain high, which also makes some companies use inferior raw materials, reduce prices and reduce quality, and their product quality cannot be guaranteed at all.

Although the price war is not as fierce as before, it still exists. More companies use price strategies to squeeze the same market at home or abroad. Undoubtedly, Wangmei quenches thirst, and finally loses all.

It is reported that how to maintain the healthy development of the Double Drum Hoist Winch industry must be controlled from the source of the Double Drum Hoist Winch market, aiming at the high-end market gradually becoming the development strategy of the enterprise, strengthening the self-discipline of the production enterprise's own behavior, and strictly controlling the raw materials to the production process. Control, to ensure the stability of product quality, but also depends on whether it is environmentally friendly.

Through efforts to improve product technology content and increase independent innovation, in order to achieve the road of sustainable development.

If you are interested in this product,please kindly leave your whatsapp or email! I will send you  the price!!

What Should I Pay Attention To When Using A Scraper Winch?

In the mining industry, scraper winch is an indispensable machinery. The scraper winch is used for ore handling and filling in underground or open air of metal mines and other mines. It can also be used for rake with low inclination, but not as lifting equipment. It can be said that the mining industry in the development of a very important role.

Scraper winch often used in mining tools, the technical requirements are as follows:

1, Scraper winch in the underground harrow mining, generally adopt temporary fixation method, assuredly fixed foundation; It is fixed firmly, and often check whether the machine's fixed pile loose, found problems should be dealt with in time to ensure the operation of equipment.

2. Inspect the parts of the harrow in detail. If the lubrication of each part, whether the lack of oil or oil leakage; Abrasion of harrow bucket, bucket teeth, pulley, idler, transmission gear and gear shaft; Fixation and wire breakage of the wire rope; Whether the brake belt is overworn or there is no skidding phenomenon; Check and adjust the brake clearance of the brake belt frequently to ensure that the brake is flexible and reliable, to prevent the brake belt from overheating and excessive wear, to make the shield and seal device to maintain integrity, so as not to fall into the rock.

3, to pay attention to the rake bucket at any time of the pole. To prevent the rake bucket in front of the ore and rock accumulation too much or too large block, so as not to cause equipment accidents mass resistance.

4, always pay attention to the sound of scraper winch operation, in order to distinguish the equipment operation and the load with the normal. When the temperature of the machine exceeds 70℃, it should be stopped and put into operation after the temperature drops.

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How To Solve The Rust Problem Of The Dispatch Winch Chain?

Dispatch Winch's performance is very good, so it is also widely used in the market. Many users will choose Dispatch Winch when purchasing Dispatch Winch, but they must be operated according to the requirements when using it, otherwise it is easy to malfunction. In particular, the protection system of Dispatch Winch is prone to problems, but such problems are usually caused by brake pads, as long as they are replaced in time.

If there is a problem with the dispatch winch, you can find all the problems on the protection system. For example, there are problems with brake shoe protection devices. If the safety circuit disappears, the brake pads must be replaced. Others are similar. However, electrical components and hydraulic station components may go wrong, but this is not a big mistake. Understand system maintenance. The deceleration point is on the depth indicator. If the deceleration point is up and down, the position switch can be changed by adjusting the position. If you want to slow down, you can place it anywhere.

In the inverter Dispatch Winch, the inverter is faulty, that is, the line is faulty, the control program is usually no problem, you don't need to change it, and the protection is no problem. The hydraulic station is not a hydraulic pump. In addition to the combustion pump, there is another problem. The hydraulic station is also a valve issue. For example, the valve is burned, or the adjustment position needs to be adjusted, and the oil pipe is leaking or clogged. Generally speaking, except for bad parts, other things will not be broken. In short, if you want to repair this thing, you need to understand the schematic, otherwise it is useless.

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What Types Of Cement Mixers Are There?

Self-standing cement mixer have a long history. As early as the early 20th century, drum-type concrete mixers driven by steam engines have begun to appear. After the 1950s, double-cone mixers with reverse discharge and tip-out discharges and split-cylinder mixers were successively introduced and developed. The inner wall of the mixing drum of the self-falling concrete mixer has mixing blades arranged radially. When working, the mixing drum rotates around its horizontal axis, the materials added into the mixing drum are lifted to a certain height by the blades, and then fall by their own weight, so the repeated movements can achieve the effect of uniform stirring. The structure of the self-falling concrete mixer is simple, and it is generally based on mixing plastic concrete.

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Since the emergence of the forced cement mixer in the early 1950s, it has been rapidly developed and popularized. The first to appear is the disc vertical shaft type forced concrete mixer. This mixer is divided into two types: turboprop and planetary. After the 1870s, with the application of light aggregates, a circular groove horizontal shaft type forced mixer appeared. It is divided into single horizontal shaft type and double horizontal shaft type, which has the characteristics of self-falling and forced mixing. . The linear speed of the stirring blade is small, the wear resistance is good and the energy consumption is low, and the development is fast. The rotating shaft arm frame in the mixing drum of the forced concrete mixer is equipped with mixing blades. The materials in the mixing drum are added, and under the strong agitation of the mixing blades, a cross flow is formed. This mixing method is far stronger than the free-fall mixing method, and is mainly suitable for mixing dry hard concrete.

The continuous concrete cement mixer is equipped with spiral mixing blades. Various materials are continuously weighed into the mixer according to the mixing ratio, and the mixed concrete is continuously discharged from the discharge end. The mixing time of this mixer is short, the productivity is high, and its development is remarkable.

With the development of concrete materials and construction technology, many new types of concrete mixers have emerged, such as steam-heated mixers, supercritical speed mixers, sonic mixers, swing-disc mixers without mixing blades, and second-mix concrete mixers and so on

What Are The Functions Of The Pipeline Inspection Crawler Camera

The pipe inspection crawler camera is to check whether the newly constructed sewage pipeline is smooth, whether there are cracks, collapses and other problems. After the workers put the robot into the sewer, the real-time picture in the sewer is directly transmitted to the image recording processing terminal through the cable On the display, data such as silt point, pipeline length, slope and so on are displayed and recorded one by one. Through the joystick, the staff can control the pipeline to check the forward and backward of the crawler camera, and also can control the movement of the camera. Just like a doctor doing a gastroscope for the patient, the internal situation can be clearly seen.

Before the sewer pipeline collapsed or clogged, basically all the staff of the dredging team got in to "investigate". For some narrow pipelines, the entire section of the road above can only be dug up to find and solve the problem, which is a waste of manpower, Material and financial resources. The arrival of the pipe inspection crawler camera solves these two problems well. At the same time, the pipeline inspection crawler camera can transmit the picture back in real time and generate a nationally recognized analysis report, so that the staff can clearly and intuitively understand the situation in the pipeline to achieve precise maintenance and construction.

The pipe inspection crawler camera can not only inspect narrow pipelines with a diameter of 30 cm and pipelines with high concentration of toxic gases, but also transmit high-definition images in real time, generate analysis reports, and improve the level of refinement of pipeline maintenance management. This powerful new "colleague" is the sewer crawler intelligent robot that has just been put into use in our district.

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China's Mining Scraper Winch Machinery Industry Has Good Development Prospects

China's mining scraper winch industry has always been a pillar industry of the national economy and has an important impact on the development of the country. With the support and guidance of national policies, the mining machinery industry will move toward an international high-end market stage through deepening reforms, actively adjusting industrial and product structures, and transforming economic growth methods. Today, the scraper winch industry has achieved unprecedented achievements in the past decade, but it still faces the challenges of foreign advanced manufacturers and the advent of China's rapid economic development in the middle and late stages, so it should be actively faced now, otherwise it will be very passive in the future.

In the next 5 years, or even 10 years, the technological growth of mining scraper winch will become the focus of the industry, and at the same time, it is also a sudden process of mining machinery from quantitative change to qualitative change. The following points will be the future development direction of mining scraper winch.

The main points are as follows:
1. Digitization. Product development, enterprise collaboration, digital mine.
2. Intelligent. Automatic mining in underground mines, seabed mining, equipment health self-diagnosis.
3. Ecology. Green design, fuel cell, geothermal, solid waste treatment.

In general, China in the 21st century has become a major scraper winch machinery manufacturing country and has attracted worldwide attention. With the deepening of China's reform and opening up and the development of world economic integration, domestic and international market competition for mining machinery products as major equipment is becoming more and more fierce. In the next period of time, it is the best time to lay the foundation for China's realization of a powerful scraper winch country. After several years of independent innovation, it will develop digital and intelligent. Ecological and pleasant mining machinery, to achieve high-end complete sets of major equipment, to achieve sublimation of scraper winch technology, to improve mineral utilization, change the status of high pollution and high consumption of mineral processing, promote product structure adjustment, and build a good ecological civilization and recycling The economy is of great significance.

As we all know, the world today is in the third revolution represented by atomic energy, electronic computers and automation, and its experimental technology. Both design methods and design methods should be incorporated into this historical trend. Therefore, only in accordance with the development trend of international and domestic mining scraper winch and devote great efforts in design technology can the quality of mining machinery be comprehensively improved as soon as possible.

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How To Improve The Utilization Rate Of Scraper Winches

Any machine will have energy loss when working, and the scraper winch is no exception. Although we cannot completely eliminate the loss, we can effectively reduce its loss.

The power loss of the hydraulic system of the scraper winch will cause energy loss on the one hand and reduce the overall efficiency of the system. On the other hand, the lost part of the energy will be converted into heat energy, which will increase the temperature of the hydraulic oil and the oil. Deterioration, resulting in failure of hydraulic equipment.

First, from the perspective of the power source-the pump, considering the diversification of the working conditions of the actuator, sometimes the system requires large flow and low pressure; sometimes it requires small flow and high pressure. Therefore, it is appropriate to choose a pressure-limited variable pump, because the flow rate of this type of pump changes with the change of system pressure. When the system pressure is reduced, the flow rate is relatively large, Scraper Winch can meet the fast stroke of the actuator. When the system pressure increases, the flow rate decreases accordingly, which can meet the working stroke of the actuator. This can not only meet the working requirements of the actuator, but also make the power consumption more reasonable.

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Functional Characteristics Of Radiation Detectors

The development of nuclear radiation detectors is one of the signs of progress in nuclear technology. The level of development and production of a country ’s nuclear radiation detectors is also one of the important signs of the country ’s level of nuclear technology. The development of nuclear radiation detectors is synchronized with the development of nuclear detection technology, and has experienced the development process from counting, spectrum measurement, to image display. Corresponding to the above process, the requirements for the development of nuclear radiation detectors are: fast time, high detector efficiency, high (pulse amplitude, energy) resolution and large volume, forming an array, etc. In addition, under the premise of similar nuclear performance, the production process of the detector, the environmental conditions and the price of the detector are also important factors that lead to the replacement of the detector.

Features of radiation detectors
Radiation detectors high sensitivity, fast response speed, wide measuring range, and response to environmental background. The dose rate is measured in real time, and the cumulative dose is recorded and displayed at the same time. Within the measurement range, the dose rate alarm threshold and cumulative dose alarm threshold can be set arbitrarily. Radiation detectors has dual alarm functions of dose rate and cumulative dose. Alarm events are automatically recorded and can be queried manually. Built-in memory, the accumulated dose value, alarm threshold and alarm record will not be lost after power off. The color screen is equipped with a full Chinese menu interface and multiple function buttons to make the operation easier and the experience more humane. With real-time clock function, radiation detectors can accurately record the time when the alarm occurs and the current time. Built-in lithium battery, no need to replace the battery. Optional intelligent wireless networking for remote management of measurement data. Optional door machine interlocking function can be used as an electronic key for access control.

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What Should I Pay Attention To When Using A Scraper Winch?

In the mining industry, scraper winch is an indispensable machinery. The scraper winch is used for ore handling and filling in underground or open air of metal mines and other mines. It can also be used for rake with low inclination, but not as lifting equipment. It can be said that the mining industry in the development of a very important role.

Scraper winch often used in mining tools, the technical requirements are as follows:

1, Scraper winch in the underground harrow mining, generally adopt temporary fixation method, assuredly fixed foundation; It is fixed firmly, and often check whether the machine's fixed pile loose, found problems should be dealt with in time to ensure the operation of equipment.

2. Inspect the parts of the harrow in detail. If the lubrication of each part, whether the lack of oil or oil leakage; Abrasion of harrow bucket, bucket teeth, pulley, idler, transmission gear and gear shaft; Fixation and wire breakage of the wire rope; Whether the brake belt is overworn or there is no skidding phenomenon; Check and adjust the brake clearance of the brake belt frequently to ensure that the brake is flexible and reliable, to prevent the brake belt from overheating and excessive wear, to make the shield and seal device to maintain integrity, so as not to fall into the rock.

3, to pay attention to the rake bucket at any time of the pole. To prevent the rake bucket in front of the ore and rock accumulation too much or too large block, so as not to cause equipment accidents mass resistance.

4, always pay attention to the sound of scraper winch operation, in order to distinguish the equipment operation and the load with the normal. When the temperature of the machine exceeds 70℃, it should be stopped and put into operation after the temperature drops.

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Technical Update Of Scraper Winch

With the rapid development of small and medium-sized mine cars in China, the demand for scraper winches is increasing. According to the statistics of the main production plants, the annual output is nearly 20,000 units. Practice has proved that the scraper winch is an economical, practical, adaptable and reliable stope mining equipment, and its scope of use is still expanding. China has been producing DPJ series scraper winches since 1960. We have accumulated some experience in manufacturing, operation and maintenance. Some improvements have also been made in the scraper winch structure.

Due to the continuous development of mining technology, higher performance and quality requirements for scraper mining equipment are also put forward. In recent years, we have conducted on-site investigations on dozens of users with different mining methods and different application conditions, and have mastered the application status and existing problems of scraper winches in various types of mines. The different requirements of the harrow bucket provide a reliable basis for product design improvement and upgrading. At present, the DPJ series scraper winches produced by various domestic factories are based on the improved design of the former Soviet Union electric rake, which has a history of more than 30 years. Despite several improvements, the basic structure is still a Soviet-like model. Compared with the industrially developed regions such as the United States, Britain, and France, there are still considerable gaps in technical performance and product quality, such as relatively laborious operation and difficulty in overhauling individual transmission parts. Therefore, we are producing scraper winches at home and abroad On the basis of the investigation of usage, the performance and structure were compared and analyzed, and the DPJ series scraper winches were updated.

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Scope Of Use Of Rebar Detector

The rebar detector is mainly used for testing the position of the steel bar, the thickness of the protective layer, the distance between the steel bars and the diameter of the steel bar in the concrete structure, and can accurately draw the distribution map of the overall steel bar to quickly provide high-precision detection data; the integrated structure of the main unit of the rebar detector and the sensor , rebar detector is convenient and fast to carry and operate on site; rebar detector adopts multi-coil structure design, which has faster speed, higher precision and stronger resolution.

Reinforced rebar detector can survey the location of steel bars, distribution and trend of steel bars, thickness of protective layer, and diameter of steel bars in concrete structural engineering; acceptance inspection of construction quality of building concrete structures; inspection of steel bars in bridges, tunnels and other structures; and structures under construction Evaluate the safety and durability of the structure; evaluate the amount of reinforcement during the evaluation and reconstruction of the old structure.

The rebar detector adopts a built-in large-capacity lithium battery with low power consumption. When the battery is fully charged, it will normally stand for about 16 hours. In the data management mode, the data storage, viewing, and deletion functions can store about 200,000 steel bar measuring point data; The steel bar detector adopts ultra-dense bar resolving ability to solve the problem of steel bar missing judgment; rebar detector can be equipped with a professionally designed standard calibration test block; the integrated design of the host and the sensor coil is compact, lightweight, and easy to carry; Real-time judgment of the middle position of the adjacent steel bar, indicator light prompt, can avoid the surrounding steel bars, convenient for drilling cores; the steel bar detector is shockproof, has a protective lining inside, and is equipped with a waterproof cover, which is easy to carry; equipped with Zhongdi Yuanda steel bar detection Software to facilitate professional data analysis, data processing and complete report generation on PC.

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