Hydraulic support for coal mining

Abstract

The utility model relates to the technical field of hydraulic supports, and discloses a hydraulic support for coal mining, which comprises a hydraulic support, a base is mounted at the bottom of the hydraulic support, a stand column is fixedly mounted at the top of the base, and a top beam is fixedly mounted at the top of the stand column; the water pumping mechanism is fixedly installed on the top of the base and located below the top beam and provides water pumping power. The rotating wheel starts to work through power provided by the motor, the rotating wheel sucks a water source into the water conveying pipe, the water source in the water conveying pipe flows into the transfer box to drive the power turbine to rotate, and the power turbine rotates to provide power for the air blowing mechanism so that the air blowing mechanism starts to blow air; the device can provide a blowing dust removal effect for the mist spray head while spraying water for dust removal, so that the time consumed by workers for frequently cleaning the spray head is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic supports, and more specifically, to a hydraulic support for coal mining in coal mines. Background Art

[0002] Coal mining operations are extremely dangerous. As a major coal-producing country, professional tools are an essential part of ensuring the safety of miners during coal mining. In modern coal mining operations, miners use processes such as drilling, blasting, and coal shearers to break coal seams. These operations generate a large amount of coal dust, filling the air in the mine tunnels with coal dust. If miners inhale a large amount of it, they may face respiratory diseases. Moreover, coal dust is a flammable substance, and if the concentration is too high, it can trigger fire accidents.

[0003] There are many current dust reduction methods in coal mines underground. For example, the patent application No. 202120889803.2, "Hydraulic Support with Dust Reduction Device". The hydraulic support with a dust reduction device includes a hydraulic support body; a crossbeam is provided on the hydraulic support body; a spraying device is provided on the crossbeam; the spraying device includes a water pump, a spray rod, and a hose connecting the water pump and the spray rod; nozzles are provided on the spray rod; the water pump is fixed on the lower end surface of the crossbeam; hanging ears are provided on the lower end surface of the crossbeam; clamping grooves are provided on the hanging ears; part of the spray rod is clamped in the clamping grooves; the side wall of the clamping groove is in contact with the outer wall of the spray rod. Although the installation structure of the spray rod of this utility model is simple, easy to disassemble and assemble, and convenient for cleaning the nozzles on the spray rod, the space in the coal mine underground is narrow, and dust is constantly generated due to the operations of miners and coal shearers and is difficult to disperse. Moreover, the fog nozzles used in it are for large-scale dust reduction, resulting in small spray openings. The sprayed water mist collides with the dust particles suspended in the air, causing them to condense and adhere to the surface of the water droplets. Eventually, due to gravity, they sink. Some of the sinking particles fall to the ground, while some of the particles will fall into the spray openings due to air flow and need to be cleaned frequently, consuming a lot of manpower. If not cleaned immediately, it may cause an increase in the pressure inside the water pipe, damaging the water pipe and resulting in waste of water resources. Therefore, it needs to be improved and optimized. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a hydraulic support for coal mining, which has the advantages of dust removal and anti-blocking.

[0005] To achieve the above object, the utility model provides the following technical solution: A hydraulic support for coal mining includes a hydraulic support. A base is installed at the bottom of the hydraulic support. A column is fixedly installed at the top of the base. A roof beam is fixedly installed at the top of the column.

[0006] The water pumping mechanism is fixedly installed at the top of the base and is located below the top beam, providing the power for water pumping;

[0007] The water spraying mechanism is fixedly installed at the top of the column and is located below the top beam. One end of it is fixedly connected to the water supply mechanism, transporting the water source;

[0008] The power mechanism is fixedly installed inside the water conveyance mechanism, providing power;

[0009] The air blowing mechanism is fixedly installed at the top of the water conveyance mechanism, and one end of it is fixedly connected to the power mechanism, providing the air source;

[0010] The air supply mechanism is fixedly installed at the bottom of the top beam and is located above the column. One end of it is fixedly connected to the air blowing mechanism, and the other end is fixedly connected to the water spraying mechanism, directionally transporting the wind force;

[0011] Among them, the air blowing mechanism includes a filter plate fixedly installed on the top of the water spraying mechanism. A blowing port is fixedly installed on the top of the filter plate, and the top of the blowing port is fixedly connected to the air supply mechanism. A fan is movably installed inside the blowing port, and the bottom of the fan is fixedly connected to the power mechanism.

[0012] As a preferred technical solution of the present invention, a fixing ring is fixedly installed at the other end of the air blowing mechanism;

[0013] There are two dust prevention mechanisms, which are fixedly installed and movably installed at the bottom of the fixing ring, preventing dust from accumulating on the water spraying mechanism;

[0014] There are two locking mechanisms, one end of which is fixedly installed at the top of the fixing ring, and the other end is movably installed at the top of the dust prevention mechanism, controlling the opening and closing of the dust prevention mechanism;

[0015] Among them, the dust prevention mechanism includes a rotating shaft movably installed behind the fixing ring. The top of the rotating shaft is movably connected to the fixing ring, the bottom of the rotating shaft is fixedly connected to the dust prevention plate, and the other end of the dust prevention plate is movably installed with a locking mechanism.

[0016] As a preferred technical solution of the present invention, the water pumping mechanism includes a water inlet fixedly installed on the left side of the water tank. The water pumping mechanism also includes a water outlet fixedly installed on the top of the water tank. A runner is fixedly installed on the top of the water outlet, the top of the runner is fixedly connected to the water spraying mechanism, the output shaft of the motor is fixedly connected to the runner, and the motor is fixedly installed on the top of the water tank.

[0017] As a preferred technical solution of the present utility model, the water spraying mechanism includes a water delivery pipe fixedly connected to the runner, the other end of the water delivery pipe is fixedly connected to the transfer box, the transfer box is fixedly connected to the water spraying pipe, the water spraying pipe is fixedly installed at the top of the column, the other end of the water spraying pipe is fixedly connected with a mist nozzle, and there are two mist nozzles in total.

[0018] As a preferred technical solution of the present utility model, the power mechanism includes a spoiler fixedly installed on the inner side of the transfer box, and the power mechanism further includes a connecting rod movably installed inside the transfer box. The bottom of the connecting rod is fixedly connected to the power turbine, and the other end of the connecting rod passes through the top of the transfer box and is fixedly connected to the fan.

[0019] As a preferred technical solution of the present utility model, the air supply mechanism includes a ventilation pipe fixedly installed at the top of the air outlet, the ventilation pipe is fixedly installed at the bottom of the top beam, the other end of the ventilation pipe is fixedly installed with an air supply port, there are two air supply ports, the bottom of the air supply port is fixedly connected to the air nozzle, the air nozzle is fixedly installed on the mist nozzle, and there are two air nozzles. The bottom of the air nozzle is fixedly connected to the dust prevention mechanism.

[0020] As a preferred technical solution of the present utility model, the locking mechanism includes a notch fixedly installed at the top of the fixed ring, and the locking mechanism further includes a buckle installed at the other end of the dust-proof plate, and the buckle is movably connected to the dust-proof plate.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0022] 1. With the power provided by the motor in the present utility model, the runner starts to work. The runner sucks the water source into the water delivery pipe, and the water source in the water delivery pipe surges into the transfer box, driving the power turbine to rotate. The rotation of the power turbine provides power for the blowing mechanism, enabling the blowing mechanism to start the blowing operation. The wind enters the air nozzle through transportation, causing the air nozzle to start providing blowing dust prevention for the mist nozzle. Compared with traditional devices, this device conveys the water source through the pumping mechanism and the water delivery mechanism, enabling the water spraying mechanism to start the dust reduction operation. The power mechanism uses the thrust of the flowing water source to enable the blowing mechanism to provide the effect of dust removal and blockage prevention for the mist nozzle, enabling the device to provide the blowing dust removal effect for the mist nozzle while performing the water spraying dust reduction operation, reducing the time consumed by the staff for frequent cleaning of the nozzles, liberating the hands, and improving the work efficiency.

[0023] 2. The dust-proof plate of the present utility model can be rotated by a rotating shaft, enabling the staff to control the opening and closing states of the dust-proof plate. When the dust-proof plate is closed, the buckle can be inserted into the notch to complete the locking operation. At this time, the dust-proof plate can provide dust-proof operation for the fog nozzle and air nozzle. Compared with traditional devices, this device realizes dust-proof work by controlling the switch of the dust-proof mechanism and fixes its closed state through the locking mechanism. When the mining operation of the staff ends, the floating dust in the air cannot adhere to the blowing mechanism and the water spraying mechanism, preventing the nozzle from being exposed to the air, increasing the protection of the dust reduction system, and reducing the time required for manual cleaning. Description of the Drawings

[0024] Figure 1 Schematic structural diagram of the present utility model;

[0025] Figure 2 Schematic side structural diagram of the present utility model;

[0026] Figure 3 Schematic cross-sectional structural diagram of the present utility model;

[0027] Figure 4 Schematic structural diagram of the water tank of the present utility model;

[0028] Figure 5 Schematic structural diagram of the water pipe of the present utility model;

[0029] Figure 6 Schematic structural diagram of the fan of the present utility model;

[0030] Figure 7 Schematic structural diagram of the nozzle of the present utility model.

[0031] In the figure: 1, hydraulic support; 2, base; 3, column; 4, roof beam; 5, water tank; 6, water inlet; 7, water outlet; 8, motor; 9, runner; 10, water delivery pipe; 11, transfer box; 12, spoiler; 13, power turbine; 14, filter plate; 15, connecting rod; 16, air outlet; 17, fan; 18, ventilation pipe; 19, water spraying pipe; 20, fog nozzle; 21, air supply port; 22, air nozzle; 23, fixing ring; 24, rotating shaft; 25, notch; 26, dust-proof plate; 27, buckle. Detailed Implementation Manner

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] As Figures 1 to 7 shown, the utility model provides a hydraulic support for coal mine excavation, including a hydraulic support 1, a base 2 is installed at the bottom of the hydraulic support 1, a column 3 is fixedly installed at the top of the base 2, and a roof beam 4 is fixedly installed at the top of the column 3;

[0034] A pumping mechanism, fixedly installed at the top of the base 2 and located below the roof beam 4, provides pumping power;

[0035] A water spraying mechanism, fixedly installed at the top of the column 3 and located below the roof beam 4, one end of which is fixedly connected to the water supply mechanism to convey water source;

[0036] A power mechanism, fixedly installed inside the water conveying mechanism, provides power;

[0037] A blowing mechanism, fixedly installed at the top of the water conveying mechanism, and one end of which is fixedly connected to the power mechanism to provide a wind source;

[0038] A wind supply mechanism, fixedly installed at the bottom of the roof beam 4 and located above the column 3, one end of which is fixedly connected to the blowing mechanism and the other end is fixedly connected to the water spraying mechanism to directionally convey wind force;

[0039] Among them, the blowing mechanism includes a filter plate 14 fixedly installed at the top of the water spraying mechanism, a blowing port 16 is fixedly installed at the top of the filter plate 14, and the top of the blowing port 16 is fixedly connected to the wind supply mechanism. A fan 17 is movably installed inside the blowing port 16, and the bottom of the fan 17 is fixedly connected to the power mechanism.

[0040] When the staff starts working, the staff connects the water pipe to the water inlet 6 to supply water to the water tank 5. Then, the motor 8 is started, and the motor 8 starts to operate. Its output shaft drives the runner 9 to start working. The runner 9 pumps out the water source in the water tank 5 through the water outlet 7 and transports it to the water delivery pipe 10. The water source in the water delivery pipe 10 passes through the transfer tank 11. Inside the transfer tank 11, the water source is disturbed by the spoiler 12, which pushes the power turbine 13, causing the power turbine 13 to start rotating and operating to provide power. Subsequently, the water source is output from the other side of the transfer tank 11 to the spray pipe 19. Two mist nozzles 20 are installed at the top and bottom of the spray pipe 19. At this time, the water source enters the mist nozzles 20 to complete the spraying operation. When the spraying operation starts, the rotation of the power turbine 13 drives the connecting rod 15 to rotate. The connecting rod 15 is fixedly connected to the fan 17, causing the fan 17 to start blowing. At this time, the rotation of the fan 17 sucks the wind from the bottom, and the wind blows into the air outlet 16 through the filter plate 14. Due to the characteristics of the filter plate 14 itself, the dust and particles contained in the wind will be filtered out when the wind passes through the filter plate 14, and it is not easy to block the pipeline. Subsequently, the wind is transported to the ventilation pipe 18 through the air outlet 16. An air supply port 21 is fixedly installed below the ventilation pipe 18. The air supply port 21 is fixedly connected to the air nozzle 22. Therefore, the wind is transported to the air supply port 21 through the ventilation pipe 18 and then blown into the air nozzle 22 from the air supply port 21, causing the air nozzle 22 to start blowing to blow away the floating dust on the mist nozzles 20.

[0041] Driven by the power provided by the motor 8, the runner 9 starts to work. The runner 9 sucks the water source into the water delivery pipe 10. The water source in the water delivery pipe 10 surges into the transfer tank 11, driving the power turbine 13 to rotate. The rotation of the power turbine 13 provides power for the blowing mechanism, causing the blowing mechanism to start blowing. The wind enters the air nozzle 22 through transportation, causing the air nozzle 22 to start providing blowing and dust prevention for the mist nozzles 20. Compared with traditional devices, this device transports the water source through the pumping mechanism and the water supply mechanism, causing the spraying mechanism to start the dust reduction operation. The power mechanism uses the thrust of the flowing water source to make the blowing mechanism provide the effect of dust removal and blockage prevention for the mist nozzles 20, enabling the device to provide the blowing and dust removal effect for the mist nozzles 20 while performing the spraying and dust reduction operation, reducing the time consumed by the staff for frequent cleaning of the nozzles, liberating the hands, and improving work efficiency.

[0042] Wherein, a fixing ring 23 is fixedly installed at the other end of the blowing mechanism;

[0043] The dust prevention mechanism, there are two of them, and they are movably installed at the bottom of the fixing ring 23 to prevent dust from accumulating on the spraying mechanism;

[0044] The locking mechanism, there are two of them, and one end is fixedly installed at the top of the fixing ring 23, and the other end is movably installed at the top of the dust prevention mechanism to control the opening and closing of the dust prevention mechanism;

[0045] Among them, the dust-proof mechanism includes a rotating shaft 24 movably installed behind the fixed ring 23. The top of the rotating shaft 24 is movably connected to the fixed ring 23, and the bottom of the rotating shaft 24 is fixedly connected to the dust-proof plate 26. The other end of the dust-proof plate 26 is movably installed with a locking mechanism.

[0046] When the operation is over, the staff will rotate the dust-proof plate 26. Since the dust-proof plate 26 is fixedly connected to the rotating shaft 24 and the rotating shaft 24 is movably connected to the fixed ring 23, the dust-proof plate 26 is closed. The bottom of the dust-proof plate 26 is sealed, so that the floating dust in the mine air cannot enter and adhere to the blowing mechanism and the water spraying mechanism, providing dust-proof work. When the dust-proof plate 26 is closed, because the buckle 27 is movably connected to the dust-proof plate 26, the staff can press down the buckle 27, so that the buckle 27 is buckled into the notch 25 to complete the locking operation.

[0047] The rotating shaft 24 can drive the dust-proof plate 26 to rotate, so that the staff can control the opening and closing states of the dust-proof plate 26. When the dust-proof plate 26 is closed, the buckle 27 can be buckled into the notch 25 to complete the locking work. At this time, the dust-proof plate 26 can provide dust-proof work for the fog nozzles 20 and the air nozzles 22. Compared with traditional devices, this device realizes dust-proof work by controlling the switch of the dust-proof mechanism and fixes its closed state through the locking mechanism. When the staff finishes the mining operation, the floating dust in the air cannot adhere to the blowing mechanism and the water spraying mechanism, preventing the nozzles from being exposed to the air, increasing the protection of the dust reduction system, and reducing the time required for manual cleaning.

[0048] Among them, the water pumping mechanism includes a water inlet 6 fixedly installed on the left side of the water tank 5. The water pumping mechanism also includes a water outlet 7 fixedly installed on the top of the water tank 5. A runner 9 is fixedly installed on the top of the water outlet 7. The top of the runner 9 is fixedly connected to the water spraying mechanism. The output shaft of the motor 8 is fixedly connected to the runner 9, and the motor 8 is fixedly installed on the top of the water tank 5.

[0049] When the staff starts the operation, the staff connects the water pipe to the water inlet 6 to convey water source to the water tank 5, and then starts the motor 8. The motor 8 starts to operate, and its output shaft drives the runner 9 to start working. The runner 9 pumps out the water source in the water tank 5 through the water outlet 7 and conveys it to the water delivery pipe 10.

[0050] Among them, the water spraying mechanism includes a water delivery pipe 10 fixedly connected to the runner 9. The other end of the water delivery pipe 10 is fixedly connected to the transfer tank 11. The transfer tank 11 is fixedly connected to the spray pipe 19. The spray pipe 19 is fixedly installed on the top of the column 3. The other end of the spray pipe 19 is fixedly connected with two fog nozzles 20.

[0051] The water source in the water delivery pipe 10 drives the power mechanism to move through the transfer box 11. Subsequently, the water source is output from the other side of the transfer box 11 to the spray pipe 19. Two mist nozzles 20 are installed at the top and bottom of the spray pipe 19. At this time, the water source enters the mist nozzles 20 to complete the spraying operation.

[0052] Among them, the power mechanism includes a spoiler 12 fixedly installed on the inner side of the transfer box 11. The power mechanism also includes a connecting rod 15 movably installed inside the transfer box 11. The bottom of the connecting rod 15 is fixedly connected to the power turbine 13, and the other end of the connecting rod 15 passes through the top of the transfer box 11 and is fixedly connected to the fan 17.

[0053] Inside the transfer box 11, the water source is turbulenced by the spoiler 12 to push the power turbine 13, causing the power turbine 13 to start rotating and providing power.

[0054] Among them, the air supply mechanism includes a ventilation pipe 18 fixedly installed on the top of the air outlet 16. The ventilation pipe 18 is fixedly installed at the bottom of the top beam 4. The other end of the ventilation pipe 18 is fixedly installed with an air supply port 21. There are two air supply ports 21. The bottom of the air supply port 21 is fixedly connected to the air nozzle 22. The air nozzle 22 is fixedly installed on the mist nozzle 20, and there are two air nozzles 22. The bottom of the air nozzle 22 is fixedly connected to the dust prevention mechanism.

[0055] The wind is transported to the ventilation pipe 18 through the air outlet 16. The air supply port 21 is fixedly installed below the ventilation pipe 18, and the air supply port 21 is fixedly connected to the air nozzle 22. Therefore, the wind is transported to the air supply port 21 through the ventilation pipe 18 and then blown into the air nozzle 22 from the air supply port 21, causing the air nozzle 22 to start blowing and blowing away the floating dust for the mist nozzle 20.

[0056] Among them, the locking mechanism includes a notch 25 fixedly installed on the top of the fixing ring 23. The locking mechanism also includes a buckle 27 installed at the other end of the dust-proof plate 26. The buckle 27 is movably connected to the dust-proof plate 26.

[0057] When the dust-proof plate 26 is completely closed, since the buckle 27 is movably connected to the dust-proof plate 26, the staff can press down the buckle 27 to make the buckle 27 snap into the notch 25 to complete the locking operation.

[0058] The working principle and usage process of the present utility model:

[0059] When the staff starts working, the staff connects the water pipe to the water inlet 6 to supply water to the water tank 5. Then, the motor 8 is started, and the motor 8 begins to operate. Its output shaft drives the runner 9 to start working. The runner 9 pumps out the water source in the water tank 5 through the water outlet 7 and transports it to the water delivery pipe 10. The water source in the water delivery pipe 10 passes through the transfer box 11. Inside the transfer box 11, the water source is disturbed by the spoiler 12, pushing the power turbine 13 and causing the power turbine 13 to start rotating to provide power. Subsequently, the water source is output from the other side of the transfer box 11 to the spray pipe 19. Two fog nozzles 20 are installed at the top and bottom of the spray pipe 19. At this time, the water source enters the fog nozzles 20 to complete the water spraying operation. When the water spraying operation starts, the rotation of the power turbine 13 drives the connecting rod 15 to rotate. The connecting rod 15 is fixedly connected to the fan 17, causing the fan 17 to start blowing. At this time, the rotation of the fan 17 sucks in air from the bottom, and the air is blown into the air inlet 16 through the filter plate 14. Due to the characteristics of the filter plate 14 itself, the dust and particles contained in the air are filtered out when passing through the filter plate 14, and it is not easy to block the pipeline. Subsequently, the air is transported to the ventilation pipe 18 through the air inlet 16. An air outlet 21 is fixedly installed below the ventilation pipe 18. The air outlet 21 is fixedly connected to the air nozzle 22. Therefore, the air is transported to the air outlet 21 through the ventilation pipe 18 and then blown into the air nozzle 22 from the air outlet 21, causing the air nozzle 22 to start blowing to blow away the floating dust on the fog nozzles 20.

[0060] When the operation ends, the staff will rotate the dust-proof plate 26. Since the dust-proof plate 26 is fixedly connected to the rotating shaft 24 and the rotating shaft 24 is movably connected to the fixed ring 23, the dust-proof plate 26 is closed. The bottom of the dust-proof plate 26 is sealed, preventing the floating dust in the mine air from entering and adhering to the blowing mechanism and the water spraying mechanism, providing dust-proof work. When the dust-proof plate 26 is closed, because the buckle 27 is movably connected to the dust-proof plate 26, the staff can press down the buckle 27 to make the buckle 27 snap into the notch 25 to complete the locking operation.

[0061] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0062] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A hydraulic support for coal mine exploitation, comprising a hydraulic support (1), characterized in that: A base (2) is installed at the bottom of the hydraulic support (1), a column (3) is fixedly installed at the top of the base (2), and a roof beam (4) is fixedly installed at the top of the column (3). A water pumping mechanism, fixedly installed at the top of the base (2) and below the roof beam (4), provides the power for water pumping. A water spraying mechanism, fixedly installed at the top of the column (3) and below the roof beam (4), has one end fixedly connected to the water delivery mechanism to convey the water source. A power mechanism, fixedly installed inside the water delivery mechanism, provides power. A blowing mechanism, fixedly installed at the top of the water delivery mechanism, has one end fixedly connected to the power mechanism to provide an air source. An air supply mechanism, fixedly installed at the bottom of the roof beam (4) and above the column (3), has one end fixedly connected to the blowing mechanism and the other end fixedly connected to the water spraying mechanism to direct the conveyance of wind. Among them, the blowing mechanism includes a filter plate (14) fixedly installed at the top of the water spraying mechanism. A blowing port (16) is fixedly installed at the top of the filter plate (14), and the top of the blowing port (16) is fixedly connected to the air supply mechanism. A fan (17) is movably installed inside the blowing port (16), and the bottom of the fan (17) is fixedly connected to the power mechanism.

2. The hydraulic support for coal mine exploitation according to claim 1, wherein: The other end of the blowing mechanism is fixedly installed with a fixing ring (23). Two dust prevention mechanisms are fixedly installed and movably installed at the bottom of the fixing ring (23) to prevent dust from accumulating on the water spraying mechanism. Two locking mechanisms are fixedly installed, with one end fixedly installed at the top of the fixing ring (23) and the other end movably installed at the top of the dust prevention mechanism to control the opening and closing of the dust prevention mechanism. Among them, the dust prevention mechanism includes a rotating shaft (24) movably installed behind the fixing ring (23). The top of the rotating shaft (24) is movably connected to the fixing ring (23), the bottom of the rotating shaft (24) is fixedly connected to a dust prevention plate (26), and the other end of the dust prevention plate (26) is movably installed with a locking mechanism.

3. A hydraulic support for coal mine excavation according to claim 1, characterized in that: The water pumping mechanism includes a water inlet (6) fixedly installed on the left side of a water tank (5). The water pumping mechanism also includes a water outlet (7) fixedly installed on the top of the water tank (5). A runner (9) is fixedly installed at the top of the water outlet (7), the top of the runner (9) is fixedly connected to the water spraying mechanism, and the output shaft of a motor (8) is fixedly connected to the runner (9). The motor (8) is fixedly installed on the top of the water tank (5).

4. A hydraulic support for coal mine mining according to claim 1, characterized in that: The water spraying mechanism includes a water delivery pipe (10) fixedly connected to the runner (9). The other end of the water delivery pipe (10) is fixedly connected to a transfer tank (11). The transfer tank (11) is fixedly connected to a water spraying pipe (19). The water spraying pipe (19) is fixedly installed at the top of the column (3). The other end of the water spraying pipe (19) is fixedly connected to two mist nozzles (20).

5. A hydraulic support for coal mine exploitation according to claim 1, characterized in that: The power mechanism includes a spoiler (12) fixedly installed on the inner side of the transfer box (11). The power mechanism further includes a connecting rod (15) movably installed inside the transfer box (11). The bottom of the connecting rod (15) is fixedly connected to the power turbine (13), and the other end of the connecting rod (15) passes through the top of the transfer box (11) and is fixedly connected to the fan (17).

6. A hydraulic support for coal mine mining according to claim 1, characterized in that: The air supply mechanism includes a ventilation pipe (18) fixedly installed on the top of the air outlet (16). The ventilation pipe (18) is fixedly installed at the bottom of the top beam (4). The other end of the ventilation pipe (18) is fixedly installed with an air supply port (21). There are two air supply ports (21). The bottom of the air supply port (21) is fixedly connected to the air nozzle (22). The air nozzle (22) is fixedly installed on the atomizing nozzle (20). There are two air nozzles (22). The bottom of the air nozzle (22) is fixedly connected to the dust prevention mechanism.

7. A hydraulic support for coal mine excavation according to claim 2, characterized in that: The locking mechanism includes a notch (25) fixedly installed on the top of the fixing ring (23). The locking mechanism further includes a buckle (27) installed at the other end of the dust-proof plate (26). The buckle (27) is movably connected to the dust-proof plate (26).

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