3 Meters Underground DN Inner Injection Single Hydraulic Prop

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Structure of Underground DN Inner Injection Single Hydraulic Prop

Single hydraulic prop plays a big role in the mine roadway support. It as internal structure of the mine for the fluid hydraulic prop, mainly consist by the roof, ventilation valve, cylinder, live cylinder, piston, hand pump, unloading valves, safety valves and handles body and other component parts.

Application of Underground DN Inner Injection Single Hydraulic Prop

DN inner injection single hydraulic prop can be applied for coal mining face of the roof support and the end plate supporting the head, because of its large carrying capacity, anti-bias load capacity, large working stroke, using a wide range, it can use in thin coal seam, thick coal seam or over thick coal seam.

Advantages of Underground DN Inner Injection Single Hydraulic Prop

1. The working fluid of Single Hydraulic Prop is the 5th hydraulic oil, back to the column when the hydraulic oil flow back into the cylinder plunger cavity to form a closed loop;

2. Does not require pumping and piping systems, auxiliary equipment.

3. Mains and pumping stations in the absence of local still use, flexibility, easy management and simple;

4. Since the working fluid is a closed loop, single hydraulic prop oil flowing back when the plunger cavity pillar itself to achieve closed loop hydraulic oil, hydraulic oil consumes very little;

5.Single hydraulic prop system for the closed system, single hydraulic prop oil does not spill, do not pollute the environment, environmental protection, and better working conditions;

6. High reliability,and the possibility of contamination by outside the small.

Parameter of Underground DN Inner Injection Single Hydraulic Prop

Model	Max height (mm)	Min height (mm)	Distance (mm)	Working resistance (kn)	Working pressure (Mpa)	cylinder diameter (mm)	base area (mm*2)	Weight (kg)
DN315-160/90	3150	2450	700	160	25	90	120	78
DN28-200/90	2800	2100	700	200	31	90	120	74
DN25-250/90	2500	1800	700	245	39	90	120	68
DN22-300/90	2240	1540	700	294	46.3	90	120	60
DN20-300/90	2000	1360	640	294	46.3	90	120	55
DN18-250/80	1800	1250	550	245	49	80	120	45
DN16-250/80	1600	1100	500	245	49	80	120	41
DN14-250/80	1400	1000	400	245	49	80	120	38
DN12-250/80	1200	870	330	245	49	80	120	34
DN10-25/80	1000	720	280	245	49	80	120	29
DN08-250/80	800	590	210	245	49	80	120	26
DN06-25/80	650	510	140	245	49	80	120	23

Pictures of Underground DN Inner Injection Single Hydraulic Prop