A pressurizing device for a coal mine remote liquid supply pipeline

Abstract

The application discloses a kind of pressurizing device for coal mine remote liquid supply pipeline, including cabinet, the two sides box wall of bottom near is fixedly connected with a liquid supply pipe through, the inner wall of the cabinet is fixedly connected with pressurizing body, the pressurizing cavity of disc is opened in the pressurizing body, the liquid inlet pipe and liquid outlet pipe are sealingly connected on the liquid supply pipe, the bottom center position of the pressurizing body is opened with liquid inlet pipe and is sealingly fixedly connected with the end of liquid supply pipe far from liquid supply pipe, the outer wall of the side of the pressurizing body is opened with liquid outlet groove and is communicated with pressurizing cavity.The present application can automatically open pressurizing device work according to the hydraulic pressure in liquid supply pipe, and the liquid is pressurized, and the size of the hydraulic pressure in liquid supply pipe can be reacted to the number of second conductive spring connected to the circuit, so as to change the transmission ratio of driving friction wheel and driven friction wheel, improve the rotational speed of vane and increase the pressurizing amount, realize the automatic adjustment of pressurizing amount under different hydraulic pressure.

Description

Technical Field

[0001] This invention relates to the field of coal mine production technology, and in particular to a pressurization device for a remote liquid supply pipeline in a coal mine. Background Technology

[0002] Remote liquid supply system is a new technology in the equipment configuration of fully mechanized coal mining faces in China. Its feature is that the emulsion pump station and spray pump station are separated from the moving electronic train of the longwall face and moved to a fixed position outside the side opening of the longwall face. The emulsion and high-pressure spray are transported to the longwall face through an ultra-high pressure pipeline system, while ensuring that the end pressure of the hydraulic system of the support, the internal and external spray of the coal mining machine and the support spray meet the requirements of the regulations and specifications.

[0003] In existing remote liquid supply operations, the long pipelines and numerous bends result in insufficient liquid pressure, necessitating the installation of pressurization devices. Most existing pressurization devices employ pressurization pumps, but these pumps maintain a constant pressure during operation, and the pressurization time is entirely controlled by workers, lacking the ability to automatically adjust based on the hydraulic pressure within the pipeline and thus lacking intelligence. Therefore, a pressurization device for remote liquid supply pipelines in coal mines is proposed. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art and to propose a pressurization device for remote liquid supply pipelines in coal mines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pressurizing device for a remote liquid supply pipeline in a coal mine includes a housing. A liquid supply pipe is fixedly connected through both sides of the housing near the bottom. A pressurizing body is fixedly connected to the inner wall of the housing. A disc-shaped pressurizing chamber is formed inside the pressurizing body. An inlet pipe and an outlet pipe are sealed and connected to the liquid supply pipe. An inlet is formed at the center of the bottom of the pressurizing body and is sealed and fixedly connected to the end of the inlet pipe away from the liquid supply pipe. An outlet groove is formed on one outer wall of the pressurizing body and communicates with the pressurizing chamber. The end of the outlet pipe away from the liquid supply pipe is sealed and connected to the outlet groove.

[0007] Furthermore, a mounting plate is fixedly connected to the inner wall of the chassis near the top. A motor is fixed to the mounting plate by bolts. The output shaft of the motor is coaxially fixedly connected to a connecting shaft with a regular hexagonal cross-section. A fixing plate is fixedly connected to the inner wall of the chassis away from the motor. A sliding groove is formed on the fixing plate. A slider is slidably connected in the sliding groove. A main shaft is rotatably connected to the slider through a bearing. A regular hexagonal prism-shaped connecting groove is coaxially formed on the end of the main shaft away from the slider. The connecting shaft is slidably connected to the connecting groove on the main shaft.

[0008] Furthermore, an active friction wheel is coaxially fixedly connected to the main shaft, and a rotating shaft is rotatably connected to the center of the top cavity wall of the pressurizing chamber. Multiple vortex blades are fixedly connected to the rotating shaft, and a driven friction wheel is coaxially fixedly connected to the upper end of the rotating shaft through the pressurizing body. The active friction wheel and the driven friction wheel are connected to each other through frictional contact.

[0009] Furthermore, a solenoid valve is installed between the inlet pipe and the outlet pipe in the liquid supply pipe. A first conductive spring is fixedly connected to the side of the slider away from the main shaft. The end of the first conductive spring away from the slider is fixedly connected to the wall of one end of the groove. The motor is connected in series with the first conductive spring and the solenoid valve through a wire.

[0010] Furthermore, a fixing block is fixedly connected to the top inner wall of the chassis located on one side of the fixing plate. Multiple moving slots are equally spaced at the bottom of the fixing block. A limit rod is slidably connected in each moving slot. A second conductive spring is fixedly connected to the upper end of each limit rod. The upper end of each second conductive spring is fixedly connected to the top wall of the moving slot.

[0011] Furthermore, the end of the liquid supply pipe located inside the casing and away from the liquid outlet pipe is sealed and connected to a detection pipe. A piston block is slidably connected inside the detection pipe. The end of the detection pipe away from the liquid supply pipe is a closed opening. A sliding rod is fixedly connected to the top of the piston block. The upper end of the sliding rod is slidably connected through the closed end of the detection pipe. A return spring is sleeved on the sliding rod and connected to the piston block and the wall of the closed end of the top of the detection pipe. Two symmetrically distributed conductive blocks are embedded in the closed end of the detection pipe. The two conductive blocks are slidably connected to the sliding rod. A conductive layer is provided on the upper part of the sliding rod. The two conductive blocks are connected in series with the circuit where the motor is located through wires and are electrically connected to an external power supply.

[0012] Furthermore, a lifting groove is provided on the inner wall of the chassis near the detection tube. A lifting block is fixedly connected to the top of the slide rod. The lifting block is slidably connected to the lifting groove. A grounding block is provided at one end of the lifting groove on the lifting block. Multiple grounding plates are fixedly embedded at equal intervals on the groove wall of the lifting groove. The number of grounding plates on the lifting groove is equal to the number of second conductive springs on the fixed block. Multiple second conductive springs and multiple grounding plates are connected in series with each other through wires. The circuits of the grounding block and the grounding plates are all electrically connected to an external power supply. Conductive plates are embedded on the groove wall near the bottom of the lifting groove. An alarm is provided on the outer wall of the chassis. The alarm is connected in series with the conductive plates through wires and is also electrically connected to an external power supply.

[0013] Furthermore, the multiple electrical contacts in the lifting groove, from top to bottom, correspond sequentially to the multiple second conductive springs on the fixed block, from near to far from the slider.

[0014] The present invention has the following advantages:

[0015] This invention can automatically activate the pressurization device to pressurize the liquid under management based on the hydraulic pressure in the supply pipe. At the same time, it can reflect the magnitude of hydraulic pressure fluctuations in the supply pipe to the number of second conductive springs connected to the circuit, thereby changing the transmission ratio between the active and driven friction wheels, increasing the speed of the vortex and increasing the pressurization amount. This achieves automatic adjustment of the pressurization amount under different hydraulic pressures. Furthermore, when the hydraulic pressure drops too much, an alarm is issued to alert workers that there may be a leak or break in the supply pipe, facilitating timely inspection and repair of the pipe. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a pressurization device for a remote liquid supply pipeline in a coal mine, as proposed in this invention.

[0017] Figure 2 This is a top sectional view of the pressurizing body in a pressurizing device for a remote liquid supply pipeline in a coal mine, as proposed in this invention.

[0018] Figure 3 This is a schematic diagram of the main shaft portion of a pressurizing device for a remote liquid supply pipeline in a coal mine, as proposed in this invention.

[0019] Figure 4 This is an enlarged schematic diagram of point A of a pressurization device for a remote liquid supply pipeline in a coal mine, as proposed in this invention.

[0020] Figure 5 This is an enlarged schematic diagram of point B of a pressurization device for a remote liquid supply pipeline in a coal mine, as proposed in this invention.

[0021] Figure 6 This is a circuit diagram of a pressurization device for a remote liquid supply pipeline in a coal mine, as proposed in this invention.

[0022] In the diagram: 1. Chassis; 2. Liquid supply pipe; 3. Solenoid valve; 4. Pressurizing body; 5. Pressurizing chamber; 501. Liquid inlet; 502. Liquid outlet groove; 6. Liquid inlet pipe; 7. Liquid outlet pipe; 8. Rotary shaft; 9. Vortex; 10. Mounting plate; 11. Motor; 12. Connecting shaft; 13. Main shaft; 14. Connecting groove; 15. Active friction wheel; 16. Driven friction wheel; 17. Fixed plate; 18. Slide groove; 19. Slider; 20. First conductive spring; 21. Fixed block; 22. Moving groove; 23. Limiting rod; 24. Second conductive spring; 25. Detection tube; 26. Piston block; 27. Slide rod; 28. Reset spring; 29. ​​Conductive block; 30. Conductive layer; 31. Lifting groove; 32. Lifting block; 33. Connecting block; 34. Connecting piece; 35. Conductive piece; 36. Alarm. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0024] Reference Figure 1-5 A pressurizing device for a remote liquid supply pipeline in a coal mine includes a housing 1. A liquid supply pipe 2 is fixedly connected through the two side walls of the housing 1 near the bottom. A pressurizing body 4 is fixedly connected to the inner wall of the housing 1. A pressurizing chamber 5 with a disc is opened inside the pressurizing body 4. An inlet pipe 6 and an outlet pipe 7 are sealed and connected to the liquid supply pipe 2. An inlet port 501 is opened at the center of the bottom of the pressurizing body 4 and is sealed and fixedly connected to the end of the inlet pipe 6 away from the liquid supply pipe 2. An outlet groove 502 is opened on one side of the outer wall of the pressurizing body 4 and communicates with the pressurizing chamber 5. The end of the outlet pipe 7 away from the liquid supply pipe 2 is sealed and connected to the outlet groove 502.

[0025] A mounting plate 10 is fixedly connected to the inner wall of the casing 1 near the top. A motor 11 is fixed to the mounting plate 10 by bolts. A connecting shaft 12 with a regular hexagonal cross-section is fixedly connected to the output shaft of the motor 11. A fixing plate 17 is fixedly connected to the inner wall of the casing 1 away from the motor 11. A sliding groove 18 is provided on the fixing plate 17. A slider 19 is slidably connected in the sliding groove 18. A main shaft 13 is rotatably connected to the slider 19 through a bearing. A regular hexagonal prism-shaped connecting groove 14 is coaxially provided at the end of the main shaft 13 away from the slider 19. The connecting shaft 12 is slidably connected to the connecting groove 14 on the main shaft 13. An active friction wheel 15 is fixedly connected to the main shaft 13. A rotating shaft 8 is rotatably connected to the center of the top cavity wall of the pressurizing chamber 5. Multiple vortex blades 9 are fixedly connected to the rotating shaft 8. The upper end of the rotating shaft 8 passes through the pressurizing body 4 and is coaxially fixedly connected to a driven friction wheel 16. The active friction wheel 15 and the driven friction wheel 16 are in frictional contact with each other.

[0026] A solenoid valve 3 is installed between the inlet pipe 6 and the outlet pipe 7 in the supply pipe 2. A first conductive spring 20 is fixedly connected to the side of the slider 19 away from the main shaft 13. The end of the first conductive spring 20 away from the slider 19 is fixedly connected to the wall of one end of the slide groove 18. The motor 11 is connected in series with the first conductive spring 20 and the solenoid valve 3 through a wire. The solenoid valve 3 is closed when energized and open when de-energized. A detection tube 25 is sealed and connected to the end of the supply pipe 2 located inside the housing 1 and away from the outlet pipe 7. A piston block 26 is slidably connected inside the detection tube 25. The detection tube 25 is located away from the supply pipe 7. One end of the liquid tube 2 is a closed opening. A sliding rod 27 is fixedly connected to the top of the piston block 26. The upper end of the sliding rod 27 is slidably connected to the closed end of the detection tube 25. A reset spring 28 is sleeved on the sliding rod 27 and connected to the piston block 26 and the top closed end of the detection tube 25. Two symmetrically distributed conductive blocks 29 are embedded on the closed end of the detection tube 25. The two conductive blocks 29 are slidably connected to the sliding rod 27. A conductive layer 30 is provided on the upper part of the sliding rod 27. The two conductive blocks 29 are connected in series with the circuit of the motor 11 through wires and are electrically connected to the external power supply.

[0027] A fixing block 21 is fixedly connected to the top inner wall of the chassis 1 on one side of the fixing plate 17. Multiple movable slots 22 are evenly spaced at the bottom of the fixing block 21. A limit rod 23 is slidably connected within each movable slot 22. A second conductive spring 24 is fixedly connected to the upper end of each limit rod 23. The upper end of each second conductive spring 24 is fixedly connected to the top wall of the movable slot 22. A lifting slot 31 is provided on the inner wall of the chassis 1 near the detection tube 25. A lifting block 32 is fixedly connected to the top of the sliding rod 27. The lifting block 32 is slidably connected to the lifting slot 31. A power receiving block 33 is provided at one end of the lifting block 32 located in the lifting slot 31. The walls of the lifting slot 31 are evenly spaced... Multiple electrical contacts 34 are embedded in the lifting groove 31. The number of electrical contacts 34 on the lifting groove 31 is equal to the number of second conductive springs 24 on the fixed block 21. Multiple second conductive springs 24 and multiple electrical contacts 34 are connected in series with each other through wires. The circuits of the electrical block 33 and the electrical contacts 34 are connected to the external power supply. Conductive plates 35 are embedded in the groove wall near the bottom of the lifting groove 31. An alarm 36 is installed on the outer wall of the chassis 1. The alarm 36 is connected in series with the conductive plates 35 through wires and is connected to the external power supply. Multiple electrical contacts 34 in the lifting groove 31 from top to bottom correspond to multiple second conductive springs 24 on the fixed block 21 from near to far from the slider 19.

[0028] The circuit diagram in this invention is as follows: Figure 6As shown, the external power supply is set as s1, the two conductive blocks 29 are set as s2, the motor 11 is set as s3, the first conductive spring 20 is set as s4, the solenoid valve 3 is set as s5, the contact block 33 is set as s6, the multiple contact plates 34 are set as s7, the multiple second conductive springs 24 are set as s8, the conductive plate 35 is set as s9, and the alarm 36 is set as s10. When the lifting block 32 slides down, the contact block 33 on the lifting block 32 first contacts s71 in the contact plate 34. At this time, only one second conductive spring 24 is connected to the circuit. As the lifting block 32 slides down, the number of second conductive springs 24 connected to the circuit will increase.

[0029] In this embodiment, when the pressure in the supply pipe 2 is normal, the solenoid valve 3 is in the de-energized open state, and the liquid flows normally in the supply pipe 2. Since the detection pipe 25 is connected to the supply pipe 2, the pressure inside the detection pipe 25 is the same as that inside the supply pipe 2. When the pressure in the supply pipe 2 decreases or becomes insufficient, the piston block 26 inside the detection pipe 25 will slide down under the push of the return spring 28, simultaneously pulling the slide rod 27 to slide. This causes the conductive layer 30 area on the slide rod 27 to descend and contact the two conductive blocks 29 at the top of the detection pipe 25, thus completing the circuit. The solenoid valve 3 will then be energized and closed, allowing the liquid to flow normally. The fluid in the liquid pipe 2 will enter the pressurizing body 4 through the liquid inlet pipe 6. At the same time, the motor 11 will also be powered on to drive the connecting shaft 12 and the main shaft 13 to rotate. Through the friction transmission between the active friction wheel 15 and the driven friction wheel 16, the rotating shaft 8 will be driven to rotate. The vortex 9 on the rotating shaft 8 will rotate in the pressurizing chamber 5, throwing the liquid in the pressurizing chamber 5 out of the liquid outlet 502. At the same time, under the action of negative pressure, the liquid in the liquid inlet pipe 6 will be sucked in from the liquid inlet 501. The centrifugal force of the rotation of the vortex 9 will be used to pressurize the liquid. The pressurized liquid will flow back into the liquid supply pipe 2 from the liquid outlet pipe 7, thus achieving the effect of pressurization.

[0030] When the liquid in the supply pipe 2 decreases significantly, the piston block 26 will slide down a greater distance, increasing the sliding height of the lifting block 32 and the slide rod 27. The contact block 33 on the lifting block 32 will contact the contact piece 34 on the tank wall, energizing the circuit containing the second conductive spring 24. Depending on the hydraulic pressure, when the hydraulic pressure decreases less, fewer second conductive springs 24 are connected to the circuit. After being energized, the second conductive springs 24 contract, pulling the limiting rod 23 near the slider 19 upwards. After the slider 19 loses the obstruction of the limiting rod 23, under the action of the energized and retracted first conductive spring 20, it pulls the main shaft 3 to the right, reducing the linear distance between the active friction wheel 15 and the rotating shaft 8, thus reducing active friction. The transmission ratio between wheel 15 and driven friction wheel 16 increases the rotational speed of vortex 9, thereby increasing the pressurization. When the hydraulic pressure drops significantly, the position of the lifting block 32 as it slides down results in a larger number of second conductive springs 24 connected in the circuit. This increases the distance by which the slider 19 pulls the main shaft 13 to the right, further reducing the transmission ratio between the driving friction wheel 15 and driven friction wheel 16, and further increasing the rotational speed of vortex 9. This achieves automatic adjustment of the pressurization under different hydraulic pressures. When the hydraulic pressure suddenly drops too much, causing the lifting block 32 to slide to the bottom of the lifting groove 31 and contact the conductive plate 35, the alarm 36 will be energized to issue an alarm, reminding workers that there may be a leak or break in the liquid supply pipeline, and prompting them to conduct timely inspection and repair.

[0031] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pressurizing device for a long-distance liquid supply pipeline in a coal mine, comprising a casing (1), characterized in that, A liquid supply pipe (2) is fixedly connected through the two side walls of the chassis (1) near the bottom. A pressurizing body (4) is fixedly connected to the inner wall of the chassis (1). A disc-shaped pressurizing chamber (5) is opened inside the pressurizing body (4). An inlet pipe (6) and an outlet pipe (7) are sealed and connected to the liquid supply pipe (2). An inlet port (501) is opened at the center of the bottom of the pressurizing body (4) and is sealed and fixedly connected to the end of the inlet pipe (6) away from the liquid supply pipe (2). An outlet groove (502) is opened on one side of the outer wall of the pressurizing body (4) and communicates with the pressurizing chamber (5). The end of the outlet pipe (7) away from the liquid supply pipe (2) is sealed and connected to the outlet groove (502). A mounting plate (10) is fixedly connected to the inner wall of the chassis (1) near the top. A motor (11) is fixed to the mounting plate (10) by bolts. A connecting shaft (12) with a regular hexagonal cross section is fixedly connected to the output shaft of the motor (11) on the same axis. A fixing plate (17) is fixedly connected to the inner wall of the chassis (1) away from the motor (11). A sliding groove (18) is provided on the fixing plate (17). A slider (19) is slidably connected in the sliding groove (18). A main shaft (13) is rotatably connected to the slider (19) through a bearing. A regular hexagonal prism-shaped connecting groove (14) is coaxially provided at the end of the main shaft (13) away from the slider (19). The connecting shaft (12) is slidably connected to the connecting groove (14) on the main shaft (13). An active friction wheel (15) is coaxially fixedly connected to the main shaft (13). A rotating shaft (8) is rotatably connected to the center of the top cavity wall of the pressurizing chamber (5). Multiple vortex blades (9) are fixedly connected to the rotating shaft (8). The upper end of the rotating shaft (8) passes through the pressurizing body (4) and is coaxially fixedly connected to a driven friction wheel (16). The active friction wheel (15) and the driven friction wheel (16) are in frictional contact with each other. The end of the liquid supply pipe (2) located inside the casing (1) and away from the liquid outlet pipe (7) is sealed and connected to a detection pipe (25). A piston block (26) is slidably connected inside the detection pipe (25). The end of the detection pipe (25) away from the liquid supply pipe (2) is a closed opening. A slide rod (27) is fixedly connected to the top of the piston block (26). The upper end of the slide rod (27) is slidably connected to the closed end of the detection pipe (25). A sleeve is fitted on the slide rod (27). There is a reset spring (28) connected to the top closed end wall of the piston block (26) and the detection tube (25). Two symmetrically distributed conductive blocks (29) are embedded on the closed end of the detection tube (25). The two conductive blocks (29) are slidably connected to the slide rod (27). The upper part of the slide rod (27) is provided with a conductive layer (30). The two conductive blocks (29) are connected in series with the circuit where the motor (11) is located through wires and are electrically connected to the external power supply.

2. A pressurizing device for a long-distance liquid supply pipeline in a coal mine according to claim 1, characterized in that, The liquid supply pipe (2) is located between the liquid inlet pipe (6) and the liquid outlet pipe (7) and is equipped with a solenoid valve (3). The slider (19) is fixedly connected to a first conductive spring (20) on the side away from the main shaft (13). The end of the first conductive spring (20) away from the slider (19) is fixedly connected to the groove wall of one end of the slide groove (18). The motor (11) is connected in series with the first conductive spring (20) and the solenoid valve (3) through a wire.

3. A pressurizing device for a long-distance liquid supply pipeline in a coal mine according to claim 2, characterized in that, The chassis (1) is fixedly connected to the top inner wall of the fixed plate (17) on one side. A number of moving slots (22) are opened at equal intervals at the bottom of the fixed block (21). A limit rod (23) is slidably connected in each moving slot (22). A second conductive spring (24) is fixedly connected to the upper end of each limit rod (23). The upper end of each second conductive spring (24) is fixedly connected to the top wall of the moving slot (22).

4. A pressurizing device for a long-distance liquid supply pipeline in a coal mine according to claim 3, characterized in that, A lifting groove (31) is provided on the inner wall of the chassis (1) near the detection tube (25). A lifting block (32) is fixedly connected to the top of the slide rod (27). The lifting block (32) is slidably connected to the lifting groove (31). A contact block (33) is provided at one end of the lifting block (32) in the lifting groove (31). Multiple contact pieces (34) are fixedly embedded at equal intervals on the groove wall of the lifting groove (31). The number of contact pieces (34) on the lifting groove (31) is the same as that of the fixed block (27). The number of second conductive springs (24) on 1) is equal. Multiple second conductive springs (24) and multiple contact plates (34) are connected in series with each other through wires. The circuits of the contact block (33) and the contact plate (34) are connected to the external power supply. The lifting groove (31) has a conductive plate (35) embedded on the groove wall near the bottom. The outer wall of the chassis (1) is equipped with an alarm (36). The alarm (36) is connected in series with the conductive plate (35) through wires and is connected to the external power supply.

5. A pressurizing device for a long-distance liquid supply pipeline in a coal mine according to claim 4, characterized in that, The multiple electrical contacts (34) of the lifting groove (31) from top to bottom correspond sequentially to the multiple second conductive springs (24) on the fixed block (21) from near to far from the slider (19).

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