Hydraulic control valve for coal mine stope face

Abstract

The utility model provides a hydraulic control valve for a coal mine stope face, which comprises a hydraulic control valve body which is of a three-way structure and is provided with an air inlet pipe, an air outlet pipe and a hydraulic control pipe, the air inlet pipe and the air outlet pipe are respectively communicated with an air inlet and an air outlet, and the hydraulic control pipe and the air inlet pipe form a ventilation channel. The hydraulic push ventilation valve assembly is arranged in the hydraulic control pipe; and the liquid inlet pipe is arranged above the liquid pushing ventilation valve assembly. According to the utility model, the pressure of the emulsion is converted into pushing the handle of the ventilation valve; and after the cutting coal mining work cycle of the stope face is completed, compressed air for spraying the stopping agent by pneumatic motors at the upper corners of the two roadways is automatically supplied.

Description

Technical Field

[0001] The utility model relates to the field of coal mine dust removal, in particular to a hydraulic control valve for a coal mine recovery working face. Background Art

[0002] At present, automatic control systems generally use electric numerical control, which has the advantages of easy operation, high sensitivity, and wide application range. However, there are many problems in using electric numerical control to control the spray dust removal and retardant spraying of the coal mining face, mainly manifested in the easy breakage and leakage of numerical control cables, water leakage, and cable breakage when the hydraulic support moves. Utility Model Content

[0003] The utility model provides a hydraulically controlled valve for coal mine recovery working face, which converts the pressure of emulsion into a handle for pushing open the ventilation valve, ensures automatic spray dust removal when the frame is moved, and automatically supplies compressed air for spraying the inhibitor to the pneumatic motors at the upper corners of the two lanes for material transportation after the coal cutting and mining working cycle of the recovery working face is completed.

[0004] The technical solution of the utility model is achieved in this way:

[0005] Hydraulic control valve for coal mine recovery working face, including:

[0006] The hydraulic control valve body is a three-way structure, and the hydraulic control valve body has an air inlet pipe and an air outlet pipe respectively connected to the air inlet and the air outlet, and a hydraulic control pipe, and the air inlet pipe and the air outlet pipe form a ventilation channel;

[0007] A hydraulically-propelled ventilation valve assembly, which is disposed in the hydraulic control pipe;

[0008] and a liquid inlet pipe, which is arranged above the liquid-propelled ventilation valve assembly;

[0009] in,

[0010] The hydraulically driven ventilation valve assembly comprises:

[0011] A movable rod, the top end of which is provided with a pressing block, and the bottom end of which is provided with a conical rod body to close or open the ventilation channel;

[0012] A spring seat, the inner wall of which is in sealing and movable connection with the outer wall of the middle section of the movable rod, and the outer wall of which is in sealing and fixed connection with the inner wall of the hydraulic control pipe;

[0013] and a closing spring disposed between the pressing block and the spring seat;

[0014] The liquid inlet pipe comprises:

[0015] A first fixing member, which is fixed to the hydraulic support, and the first fixing member has a liquid inlet channel;

[0016] and a liquid inlet pipe body, the top end of which is fixed to the liquid inlet channel, the bottom end of which is fixed to the liquid control pipe, and the pressing block is sealingly and movably connected to the inner side surface of the liquid inlet pipe body;

[0017] The bottom of the hydraulic control valve body is provided with a conical rod accommodating groove.

[0018] Preferably, in the hydraulically controlled valve for coal mine recovery working face, the air inlet pipe comprises:

[0019] A second fixing member, which is fixed to the air supply pipeline and has an air inlet channel;

[0020] and an air inlet pipe body, the head end of which is fixed to the second fixing member, and the bottom end of which is fixed to the air inlet through a first locking nut.

[0021] Preferably, in the hydraulically controlled valve for coal mine recovery working face, the air outlet pipe comprises:

[0022] A third fixing member, which is fixed to the air outlet pipeline and has an air outlet channel;

[0023] and an air outlet pipe body, the head end of which is fixed to the third fixing member, and the bottom end of which is fixed to the air outlet through a second locking nut.

[0024] The beneficial effects of the utility model are:

[0025] (1) Use the pressure of the emulsion to open and close the ventilation valve instead of using the electric numerical control system to open and close the ventilation valve, thereby ensuring safe production from a technical perspective.

[0026] (2) Hydraulic support workers use the handle and tee of the lowering valve plate and the liquid pipe to replace the control switch and cables, CNC system, solenoid valve and other equipment, thereby improving economic benefits from the perspective of energy saving and efficiency increase. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 A schematic structural diagram of an embodiment of a hydraulically controlled valve for a coal mine recovery working face provided by the utility model;

[0029] Figure 2 A schematic diagram of the structure of a hydraulically controlled valve body in one embodiment of a hydraulically controlled valve for a coal mine recovery working face provided by the utility model;

[0030] Figure 3A schematic diagram of the structure of a hydraulically-driven ventilation valve assembly in one embodiment of a hydraulically-controlled valve for a coal mine recovery working face provided by the utility model;

[0031] Figure 4 A schematic diagram of the structure of a liquid inlet pipe in one embodiment of a hydraulic control valve for a coal mine recovery working face provided by the utility model;

[0032] Figure 5 A schematic diagram of the structure of an air inlet pipe in an embodiment of a hydraulic control valve for a coal mine recovery working face provided by the utility model;

[0033] Figure 6 The utility model is a schematic diagram of the structure of the air outlet pipe in one embodiment of the hydraulic control valve for coal mine recovery working face provided by the utility model. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model provides a hydraulic control valve for a coal mine recovery working face, which includes:

[0036] The hydraulic control valve body 1 is a three-way structure, and the hydraulic control valve body 1 has an air inlet pipe 2 and an air outlet pipe 3 respectively connected to the air inlet and the air outlet, and a hydraulic control pipe 4, and the air inlet pipe 2 and the air outlet pipe 3 form a ventilation channel;

[0037] A hydraulically-propelled ventilation valve assembly 5, which is disposed in the hydraulic control pipe 4;

[0038] and a liquid inlet pipe 6, which is arranged above the liquid-propelled ventilation valve assembly 5;

[0039] in,

[0040] The hydraulically driven ventilation valve assembly 5 comprises:

[0041] A movable rod 51, with a pressing block 52 at the top and a conical rod body 53 at the bottom to close or open the ventilation channel;

[0042] The spring seat 54 has an inner wall which is in sealing and movable connection with the outer wall of the middle section of the movable rod 51, and an outer wall which is in sealing and fixed connection with the inner wall of the hydraulic control tube 4;

[0043] and a closing spring 55 disposed between the pressing block 52 and the spring seat 54;

[0044] The liquid inlet pipe 6 comprises:

[0045] A first fixing member 61, which is fixed to the hydraulic support, and the first fixing member 61 has a liquid inlet channel;

[0046] and a liquid inlet pipe body 62, the top of which is fixed to the liquid inlet channel, the bottom of which is fixed to the liquid control pipe 4, and the pressing block 52 is sealingly and movably connected to the inner side surface of the liquid inlet pipe body 62;

[0047] The bottom of the hydraulic control valve body 1 has a conical rod receiving groove. When the conical rod drops into the receiving groove, the ventilation channel is opened. Normally, it is located between the air inlet pipe and the air outlet pipe to close the ventilation channel. The bottom of the hydraulic control valve body has a conical rod receiving groove.

[0048] like Figure 5 As shown, in one embodiment of the hydraulic control valve for coal mine recovery working face provided by the utility model, the air inlet pipe 2 includes:

[0049] A second fixing member 21, which is fixed to the air supply pipeline and has an air inlet channel;

[0050] And an air inlet pipe body 22, the head end of which is fixed to the second fixing member 21, and the bottom end is fixed to the air inlet through a first locking nut 23.

[0051] like Figure 6 As shown, in one embodiment of the hydraulic control valve for coal mine recovery working face provided by the utility model, the air outlet pipe 3 includes:

[0052] A third fixing member 31, which is fixed to the air outlet pipeline and has an air outlet channel;

[0053] The air outlet pipe body 32 has a head end fixed to the third fixing member 31 and a bottom end fixed to the air outlet via a second locking nut 33 .

[0054] After the coal mining work cycle of the coal mining face begins, the shield hydraulic support must move forward, and a large amount of coal dust will be generated at this time. When the hydraulic support worker opens the handle of the frame lowering valve, the emulsion pushes the clamping block downward through the liquid inlet pipe to compress the closing spring, and drives the conical rod body downward to open the ventilation channel. At this time, the compressed air in the air supply pipeline of the mining face is transported to the pneumatic motor through the air inlet pipe and the air outlet pipe, and the device begins to rotate and work. When the hydraulic support worker closes the handle of the frame lowering valve, the emulsion stops flowing; the recovery effect of the closing spring pushes the clamping block upward, and drives the conical rod body upward to close the ventilation channel. At this time, the working cycle of the hydraulic control valve is completed.

[0055] The utility model realizes the use of emulsion to control the opening and closing of the ventilation valve, and technically realizes the automatic spray dust removal when the hydraulic support of the mining face moves; after the mining and coal mining work cycle is completed, the upper corner pneumatic motor for automatically feeding and transporting the two lanes down the mountain sprays the compressed air used for the inhibitor. Dust is automatically eliminated from the dust source, and the inhibitor is automatically sprayed in time to prevent coal dust explosion.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulically controlled valve for coal mine recovery working face, characterized in that: include: The hydraulic control valve body is a three-way structure, and the hydraulic control valve body has an air inlet pipe and an air outlet pipe respectively connected to the air inlet and the air outlet, and a hydraulic control pipe, and the air inlet pipe and the air outlet pipe form a ventilation channel; A hydraulically-propelled ventilation valve assembly, which is disposed in the hydraulic control pipe; and a liquid inlet pipe, which is arranged above the liquid-propelled ventilation valve assembly; in, The hydraulically driven ventilation valve comprises: A movable rod, the top end of which is provided with a pressing block, and the bottom end of which is provided with a conical rod body to close or open the ventilation channel; A spring seat, the inner wall of which is in sealing and movable connection with the outer wall of the middle section of the movable rod, and the outer wall of which is in sealing and fixed connection with the inner wall of the hydraulic control pipe; and a closing spring disposed between the pressing block and the spring seat; The liquid inlet pipe comprises: A first fixing member, which is fixed to the hydraulic support, and the first fixing member has a liquid inlet channel; and a liquid inlet pipe body, the top end of which is fixed to the liquid inlet channel, the bottom end of which is fixed to the liquid control pipe, and the pressing block is sealingly and movably connected to the inner side surface of the liquid inlet pipe body; The bottom of the hydraulic control valve body is provided with a conical rod accommodating groove.

2. The hydraulic control valve for coal mine recovery working face according to claim 1, characterized in that: The air inlet pipe comprises: A second fixing member, which is fixed to the air supply pipeline and has an air inlet channel; and an air inlet pipe body, the head end of which is fixed to the second fixing member, and the bottom end of which is fixed to the air inlet through a first locking nut.

3. The hydraulic control valve for coal mine recovery working face according to claim 2, characterized in that: The air outlet pipe comprises: A third fixing member, which is fixed to the air outlet pipeline and has an air outlet channel; and an air outlet pipe body, the head end of which is fixed to the third fixing member, and the bottom end of which is fixed to the air outlet through a second locking nut.

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