Hydrodynamic negative-pressure dust removal device of coal machine

Abstract

The invention discloses a water power negative pressure dust removal device of a coal machine, and belongs to the technical field of coal mine dust removal. Comprising a fixing box, a jet flow assembly and a filtering assembly are installed on the fixing box, the filtering assembly comprises an outer pipe installed on the fixing box, a filtering cylinder is fixedly installed in the outer pipe, the filtering cylinder divides the outer pipe into an outer cavity and an inner cavity, a liquid outlet of the jet flow assembly communicates with the inner cavity, and a supporting shaft is rotationally connected to the outer pipe; an impeller and a driving assembly are installed on the supporting shaft. The jet flow assembly generates negative pressure to suck coal dust, the coal dust is mixed with jet flow water and impacts on the impeller to drive the impeller to rotate, the impeller rotates to stir mixed liquid to the filter cartridge to accelerate filtration, meanwhile, the driving assembly is driven to operate, and the driving assembly sucks filtered water in the outer cavity and sprays the filtered water out through the multiple communicated atomization nozzles. Good dust removal and dust falling effects are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine dust removal, and more particularly to a coal mining machine hydraulic negative pressure dust removal device. Background Art

[0002] Currently, coal mining operations using the drum of a coal machine at a coal mining face generate large amounts of coal dust. This dust poses a serious threat to miners' health and can also cause explosions, compromising mine safety. Traditionally, internal and external spraying methods have been used to reduce dust, but this has been ineffective and inefficient. To address this, we have developed a hydraulic negative pressure dust removal device for coal mining machines. Summary of the Invention

[0003] The purpose of the present invention is to provide a coal mining machine water-powered negative pressure dust removal device, which is used to solve the technical problems that can only be solved in the existing technology and achieve technical effects.

[0004] The embodiment of the present invention provides a coal mining machine water power negative pressure dust removal device, comprising a fixed box, a jet component and a filter component are installed on the fixed box,

[0005] The filter assembly includes an outer tube mounted on a fixed box, a filter cartridge is fixedly mounted inside the outer tube, the filter cartridge divides the outer tube into an outer cavity and an inner cavity, and the liquid outlet of the jet assembly is connected to the inner cavity.

[0006] The outer tube is rotatably connected to a support shaft, on which an impeller and a drive assembly are mounted.

[0007] The jet assembly generates negative pressure to suck in coal dust, mix it with jet water, and impact the impeller to drive the impeller to rotate. The rotation of the impeller pushes the mixed liquid toward the filter cartridge to accelerate filtration, and at the same time drives the drive assembly to operate. The drive assembly draws the filtered water from the outer cavity into the filter and sprays it out through several connected atomizing nozzles.

[0008] As a further description of the above technical solution, the jet assembly includes an air bleed pipe installed in a fixed box and a venturi tube installed at one end of the air bleed pipe. The air bleed pipe is connected to a nozzle, which is connected to a pressurized liquid supply device. An air inlet hole is opened on the air bleed pipe, and the venturi tube is connected to the inner cavity through a guide pipe.

[0009] The axis of the flow guide tube coincides with a set of chord lines of the filter cartridge.

[0010] As a further description of the above technical solution, the Venturi tube includes a convergent tube, a throat tube and a diffuser tube which are connected end to end and coaxial in sequence. The convergent tube is connected to the air duct and the nozzle, the nozzle is coaxial with the throat tube, and the diffuser tube is connected to the guide tube.

[0011] As a further description of the above technical solution, a number of centrifugal plates are fixedly installed on the support shaft, the centrifugal plates are located below and their outer diameters gradually increase from top to bottom, and the centrifugal plates have a set angle with the horizontal plane and their inclination angles gradually increase from top to bottom.

[0012] As a further description of the above technical solution, a plurality of the centrifugal plates are provided with through holes, and the through holes on two adjacent groups of centrifugal plates are staggered.

[0013] As a further description of the above technical solution, the driving assembly includes a shell mounted on the bottom of the fixed box, a rotating core is rotatably connected in the shell, the rotating core is coaxially mounted on the bottom of the support shaft, the rotating core is eccentrically mounted in the shell and forms a chamber between the shell, and the chamber is connected to the water inlet pipe and the water outlet pipe.

[0014] From the water inlet pipe to the water outlet pipe, the space of the chamber first increases and then decreases, and a plurality of sliding plates are slidably connected to the rotating core.

[0015] As a further description of the above technical solution, an elastic member is provided inside the rotating core for pulling the slide to slide inside the rotating core.

[0016] As a further description of the above technical solution, the fixed box includes a box body, one side of the box body is open and fixedly installed with a protective net, and a plurality of guide plates are installed obliquely in the box body, and the plurality of guide plates form multiple groups of air ducts.

[0017] A water storage tank is installed on the fixed box, and the drain outlet and the water inlet pipe at the bottom of the outer cavity are both communicated with the water storage tank.

[0018] As a further description of the above technical solution, a connecting pipe connected to the water outlet pipe is installed in the box, and a plurality of atomizing nozzles are connected to the connecting pipe.

[0019] A plurality of embedded tubes are fixedly installed on the box body, and the atomizing nozzles are installed in the corresponding embedded tubes.

[0020] As a further description of the above technical solution, a driving motor is installed on the fixed box, and the output shaft of the driving motor is detachably connected to the end of the support shaft.

[0021] By adopting the above technical solution, the jet water is sprayed through the nozzle toward the convergent pipe and the throat pipe, so that a negative pressure area is formed in the air duct. The external coal dust is guided from the air outlet of the box through the guide plate into the air duct and mixed with the jet water in the convergent pipe and the throat pipe. The mixed jet water is discharged through the diffuser and the guide pipe and impacts the impeller, thereby driving the impeller to rotate. The impeller drives the support shaft, the centrifugal plate and the rotating core to rotate. At the same time, the impeller pushes part of the jet water mixture toward the filter cartridge to accelerate the filtration of coal dust particles. The falling mixture falls on the centrifugal plate and is again pushed toward the filter cartridge by the centrifugal force, further accelerating the filtration of coal dust particles. The coal dust mixture remaining in the inner cavity is discharged from the sewage outlet and collected, and the filtered water in the outer cavity enters the water storage tank for secondary utilization.

[0022] When the driving motor or impeller drives the rotor to rotate, the stored water in the water tank is sucked in from the water inlet pipe and rotates with the rotor under the action of the centrifugal sliding vane. When the chamber changes from large to small, the water in the chamber is compressed and pressurized and flows from the outlet pipe to the connecting pipe, and finally sprayed from the atomizing nozzle to the coal wall, thereby realizing the wetting operation of the coal wall.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0024] 1. The present invention generates negative pressure through the jet water in the jet component, quickly sucks in the coal dust and mixes it with the jet water, thereby realizing hydrodynamic dust removal during coal mining, with good dust removal effect and high dust removal efficiency.

[0025] 2. The jet water of the present invention will impact and drive the impeller to rotate. When the impeller rotates, the pressurized water will be pushed outward, so that part of the pressurized water will quickly pass through the filter cartridge and enter the outer cavity, accelerating the filtration of part of the pressurized water and improving the separation efficiency of coal dust particles and water. When the impeller rotates, it will also drive the drive component to work, thereby extracting and atomizing the filtered water and spraying it onto the coal wall, wetting the coal wall before cutting in the coal mine, further reducing dust and improving the problem of large coal dust on the coal mining face, while also realizing the secondary recycling of filtered water.

[0026] 3. In the present invention, the unfiltered mixed liquid falling from the impeller falls on a number of centrifugal plates, thereby undergoing further centrifugal swinging and coming into contact with the filter cartridge again to achieve further filtration of the mixed liquid. By setting centrifugal plates with different inclinations and outer diameters, the mixed liquid will diffuse outward at different angles after passing through different centrifugal plates, thereby achieving layered filtration, reducing the filtration pressure of the filter cartridge at the same height, and improving the filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of a water-powered negative pressure dust removal device for a coal mining machine disclosed in a preferred embodiment of the present invention;

[0028] Figure 2This is a schematic diagram of the distribution of the guide plates of the coal mining machine hydraulic negative pressure dust removal device disclosed in a preferred embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the structure of the jet assembly of a coal mining machine hydraulic negative pressure dust removal device disclosed in a preferred embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the structure of a filter assembly of a coal mining machine hydraulic negative pressure dust removal device disclosed in a preferred embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the installation position of the guide pipe of the coal mining machine hydraulic negative pressure dust removal device disclosed in a preferred embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the support shaft connection structure of a coal mining machine hydraulic negative pressure dust removal device disclosed in a preferred embodiment of the present invention;

[0033] Figure 7 This is a working principle diagram of the driving assembly of a coal mining machine hydraulic negative pressure dust removal device disclosed in a preferred embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the connection structure of the drive motor of the coal mining machine hydraulic negative pressure dust removal device disclosed in a preferred embodiment of the present invention.

[0035] Explanation of the numbers in the figure: 1. Fixed box; 2. Jet assembly; 3. Filter assembly; 4. Drive assembly; 5. Water tank; 6. Connecting pipe; 7. Atomizing nozzle; 8. Drive motor; 9. Sleeve; 10. Protective cover; 11. Box; 12. Protective net; 13. Drain plate; 14. Embedded tube; 21. Air duct; 22. Nozzle; 23. Air inlet; 24. Gradually converging tube; 25. Throat; 26. Diffuser; 27. Guide tube; 31. Outer tube; 32. Filter cartridge; 33. Outer cavity; 34. Inner cavity; 35. Support shaft; 36. Impeller; 37. Centrifugal plate; 38. Through hole; 39. Limiting hole; 41. Shell; 42. Rotating core; 43. Chamber; 44. Slide; 45. Elastic part; 46. Water inlet pipe; 47. Water outlet pipe. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] Reference Figures 1 to 8The present embodiment discloses a water-powered negative pressure dust removal device for a coal machine, comprising a fixed box 1, which comprises a box body 11. One side of the box body 11 is open and a protective net 12 is fixedly installed. The protective net 12 is used to prevent large coal blocks from entering the box body 11 and blocking the air intake channel, thereby ensuring the smoothness of dust collection. A plurality of guide plates 13 are obliquely installed in the box body 11. The plurality of guide plates 13 form multiple groups of air ducts to guide the inhaled coal dust and control the flow direction of the coal dust. A plurality of embedded pipes 14 are fixedly installed on the box body 11, and the embedded pipes 14 are located on the adjacent side of the open box body 11.

[0038] Reference Figures 2 to 4 A jet assembly 2 is installed on the box body 11. The jet assembly 2 includes an air bleed pipe 21 fixedly installed in the box body 11 and a venturi tube installed at one end of the air bleed pipe 21. The venturi tube is fixed and sealed to the air bleed pipe 21 through a flange to prevent liquid leakage at the connection. A nozzle 22 is installed in the air bleed pipe 21. The nozzle 22 is connected to the booster liquid supply device. The booster liquid supply device continuously provides high-pressure water to the nozzle 22. An air inlet hole 23 is opened on the air bleed pipe 21. The gas guided by several guide plates 13 flows to the air inlet hole 23, thereby accelerating the adsorption efficiency of coal dust.

[0039] The Venturi tube consists of a convergent tube 24, a throat 25, and a diffuser 26, all connected end-to-end and coaxial. As the high-pressure water flows, the cross-sectional area of ​​the convergent tube 24 gradually decreases, while that of the diffuser 26 gradually increases. The convergent tube 24 is located near the air duct 21 and is connected to the duct 21 and the nozzle 22. The nozzle 22 is coaxial with the throat 25, and the inner diameter of the nozzle 22 outlet is no smaller than the inner diameter of the throat 25. A guide tube 27, connected to the diffuser 26, is flanged onto the end of the Venturi tube away from the air duct 21. The high-pressure water ejected from the nozzle 22 gradually accelerates through the convergent tube 24 and enters the throat 25. At this point, the flow rate reaches its maximum, generating negative pressure. This in turn causes coal dust to be drawn into the air duct 21 through the air inlet 23 and mixed with the high-pressure water. The mixed liquid then flows out through the diffuser 26 and the guide tube 27.

[0040] Reference Figure 1 、 Figures 3 to 6, a filter assembly 3 is installed on the box body 11, and the filter assembly 3 includes an outer tube 31 fixedly installed on the box body 11, a filter cartridge 32 is fixedly installed in the outer tube 31, and the filter cartridge 32 divides the internal space of the outer tube 31 into an outer cavity 33 and an inner cavity 34. The guide pipe 27 passes through the outer tube 31 and the filter cartridge 32 and is connected to the inner cavity 34. A support shaft 35 is rotatably connected to the outer tube 31, and an impeller 36 is fixedly installed on the support shaft 35. The axis of the guide pipe 27 coincides with a set of chords of the filter cartridge 32, that is, the pressure water of the guide pipe 27 does not pass through the center of the filter cartridge 32, and the setting height of the impeller 36 is consistent with the guide pipe 27. The outlet height corresponds to that of the guide pipe 27, so that the pressurized water ejected from the guide pipe 27 impacts the impeller 36 and drives the impeller 36 and the support shaft 35 to rotate. A plurality of centrifugal plates 37 are fixedly mounted on the support shaft 35. The plurality of centrifugal plates 37 are located on the lower side of the impeller 36 and in the filter cartridge 32. The outer diameters of the plurality of centrifugal plates 37 gradually increase from top to bottom. The plurality of centrifugal plates 37 have a set angle with the horizontal plane and the inclination angle gradually increases from top to bottom. Through holes 38 are provided on the plurality of centrifugal plates 37. The through holes 38 on the two adjacent groups of centrifugal plates 37 are staggered. The support shaft 35 passes through the outer tube 31 and is provided with a limiting hole 39.

[0041] The impact of high-pressure water drives the impeller 36 to rotate. When the impeller 36 rotates, it will push out the pressurized water, so that part of the pressurized water quickly passes through the filter cartridge 32 and enters the outer cavity 33, accelerating the filtration of part of the pressurized water and realizing the separation of part of the coal dust particles and the pressurized water. When the impeller 36 rotates, it will also drive the support shaft 35 and several centrifugal plates 37 to rotate. Therefore, the unfiltered mixed liquid falls directly on the several centrifugal plates 37, thereby further centrifugally swinging and contacting the filter cartridge 32 again to realize the filtration of the mixed liquid again. By setting the centrifugal plates 37 with different inclinations and outer diameters, the mixed liquid will diffuse outward at different angles after passing through different centrifugal plates 37, thereby realizing layered filtration, reducing the filtration pressure of the filter cartridge 32 at the same height, and improving the filtration efficiency.

[0042] The bottom of the filter cartridge 32 is tilted, with a drain outlet at its lowest point for draining filtered coal dust particles. The bottom of the outer chamber 33 is also equipped with a drain outlet for draining filtered water. It should be noted that if the treated water from the initial filtration does not meet reuse standards, further purification can be achieved by installing additional filtration equipment.

[0043] Reference Figure 1 、 Figure 4 、 Figures 6 to 8, a driving assembly 4 is installed at the bottom of the support shaft 35, and the driving assembly 4 includes a shell 41 fixedly installed at the bottom of the box body 11, and a rotating core 42 is rotatably connected in the shell 41. The rotating core 42 is coaxially installed at the bottom of the support shaft 35. When the support shaft 35 rotates, the rotating core 42 will rotate synchronously. The rotating core 42 is eccentrically installed in the shell 41 and forms a chamber 43 with the shell 41. The chamber 43 is connected with an inlet pipe 46 and an outlet pipe 47. The space of the chamber 43 increases first and then decreases from the inlet pipe 46 to the outlet pipe 47. A number of slides distributed in a circular array are provided on the rotating core 42, and a slide 44 is slidably connected in the slide. An elastic member 45 is provided in the slide, and one end of the elastic member 45 is fixedly connected to the rotating core 42, and the other end is fixedly connected to the slide 44. The elastic member 45 is used to drive the slide 44 to slide into the slide. The rotating core 42 rotates at high speed following the support shaft 35, the volume of the chamber 43 increases, the pressure in this section decreases, and the external liquid is sucked into the chamber 43 through the water inlet pipe 46. Under the action of centrifugal force, the slide 44 slides to the outside of the rotating core 42, thereby pushing the sucked liquid to rotate. As the volume of the chamber 43 decreases, the internal pressure increases, and the liquid is pressurized and transported out from the water outlet pipe 47. Through the continuous rotation of the rotating core 42, continuous water delivery is achieved.

[0044] A water tank 5 is fixedly mounted on the box body 11. The drain outlet and the water inlet pipe 46 at the bottom of the outer cavity 33 are both connected to the water tank 5. Therefore, the water filtered by the filter cartridge 32 enters the water tank 5, and the circulating water in the water tank 5 is sucked back into the rotating core 42 during its rotation process for secondary utilization. The water tank 5 can be connected to a liquid supply device and provided with a water level monitoring gauge. When the water level is lower than the set height, the stored water can be actively replenished through the liquid supply device. A corresponding exhaust system is provided on the water tank 5 to discharge the internal gas.

[0045] The housing 11 also includes a connecting pipe 6 connected to a water outlet pipe 47. Connecting pipe 6 is connected to a plurality of atomizing nozzles 7, which are installed in corresponding embedded pipes 14. Pressurized water output from the water outlet pipe 47 is sprayed from the atomizing nozzles 7 through the connecting pipe 6 toward the coal wall and the vicinity of the coal mining machine rollers, moistening the coal wall before cutting, further reducing dust and alleviating the problem of excessive coal dust at the coal mining face. Therefore, the present invention achieves the effects of accelerated coal dust filtration, recycled filtered water, and pressurized atomization sprayed onto the coal wall for dust reduction, all driven solely by the power of the jet water, while also reducing the energy consumption of the driving source.

[0046] A drive motor 8 is installed on the box body 11 and is protected by a protective cover 10 installed on the box body 11. The output shaft of the drive motor 8 is fixedly installed with a sleeve 9, which is sleeved on the end of the support shaft 35. The limit pin passes through the sleeve 9 and is inserted into the limit hole 39, thereby connecting the support shaft 35 and the output shaft of the drive motor 8. After the limit pin is removed, the support shaft 35 can be disconnected from the output shaft of the drive motor 8, realizing a detachable process. When the water pressure does not reach the set water pressure or when it is necessary to adjust the speed or output flow of the rotating core 42, the adaptability to different working conditions can also be improved through active control of the drive motor 8. Moreover, when the drive motor 8 is driven, the rotational force of the impeller 36 and the centrifugal plate 37 can be further improved, thereby improving the filtration efficiency.

[0047] Working principle: Jet water is sprayed through the nozzle 22 toward the convergent pipe 24 and the throat pipe 25, forming a negative pressure area in the air duct 21. The external coal dust is guided from the air outlet of the box body 11 through the guide plate 13 into the air duct 21 and mixed with the jet water in the convergent pipe 24 and the throat pipe 25. The mixed jet water is discharged through the diffuser 26 and the guide pipe 27 and impacts the impeller 36, thereby driving the impeller 36 to rotate. The impeller 36 drives the support shaft 35, the centrifugal plate 37 and the rotating core 42 to rotate. At the same time, the impeller 36 pushes part of the jet water mixture to the filter cartridge 32 to accelerate the filtration of coal dust particles. The falling mixture falls on the centrifugal plate 37 and is again pushed toward the filter cartridge 32 by the centrifugal force, further accelerating the filtration of coal dust particles. The coal dust mixture remaining in the inner cavity 34 is discharged from the sewage outlet and collected, and the filtered water in the outer cavity 33 enters the water storage tank 5 for secondary utilization.

[0048] When the driving motor 8 or the impeller 36 drives the rotating core 42 to rotate, the stored water in the water tank 5 is sucked in from the water inlet pipe 46, and rotates with the rotating core 42 under the action of the centrifugal sliding slide 44. When the chamber 43 changes from large to small, the water in the chamber 43 is compressed and pressurized and flows from the water outlet pipe 47 to the connecting pipe 6, and finally sprayed from the atomizing nozzle 7 to the coal wall, thereby realizing the wetting operation of the coal wall, further reducing coal dust and improving the dust reduction effect.

[0049] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. Coal machine hydraulic negative pressure dust removal device, characterized by: It comprises a fixed box (1), on which a jet component (2) and a filter component (3) are mounted. The filter assembly (3) comprises an outer tube (31) mounted on a fixed box (1), a filter cartridge (32) fixedly mounted inside the outer tube (31), the filter cartridge (32) dividing the outer tube (31) into an outer cavity (33) and an inner cavity (34), and the liquid outlet of the jet assembly (2) is in communication with the inner cavity (34). The outer tube (31) is rotatably connected to a support shaft (35), and an impeller (36) and a drive assembly (4) are mounted on the support shaft (35). The jet assembly (2) generates negative pressure to suck in the coal dust, mix it with the jet water, and impact it on the impeller (36), driving the impeller (36) to rotate. The rotation of the impeller (36) pushes the mixed liquid toward the filter cartridge (32) to accelerate filtration, and at the same time drives the driving assembly (4) to operate. The driving assembly (4) draws the filtered water from the outer cavity (33) into the filter and sprays it out through a plurality of connected atomizing nozzles (7).

2. The coal mining machine hydraulic negative pressure dust removal device according to claim 1, characterized in that: The jet assembly (2) includes an air bleed pipe (21) installed in the fixed box (1) and a venturi tube installed at one end of the air bleed pipe (21). A nozzle (22) is installed in the air bleed pipe (21), and the nozzle (22) is connected to the pressurized liquid supply device. An air inlet hole (23) is opened on the air bleed pipe (21). The venturi tube is connected to the inner cavity (34) through the guide pipe (27). The axis of the flow guide tube (27) coincides with a set of chord lines of the filter cartridge (32).

3. The coal mining machine hydraulic negative pressure dust removal device according to claim 2, characterized in that: The venturi tube comprises a convergent tube (24), a throat tube (25) and a diffuser tube (26) which are connected end to end and coaxially. The convergent tube (24) is connected to the air duct (21) and the nozzle (22). The nozzle (22) is coaxial with the throat tube (25). The diffuser tube (26) is connected to the guide tube (27).

4. The coal mining machine hydraulic negative pressure dust removal device according to claim 1, characterized in that: A plurality of centrifugal plates (37) are fixedly mounted on the support shaft (35), the plurality of centrifugal plates (37) are located below the support shaft (35) and have outer diameters gradually increasing from top to bottom, and the plurality of centrifugal plates (37) have a set angle with the horizontal plane and have an inclination angle gradually increasing from top to bottom.

5. The coal mining machine hydraulic negative pressure dust removal device according to claim 4, characterized in that: A plurality of the centrifugal plates (37) are provided with through holes (38), and the through holes (38) on two adjacent groups of centrifugal plates (37) are staggered.

6. The coal mining machine hydraulic negative pressure dust removal device according to claim 1, characterized in that: The driving assembly (4) includes a housing (41) mounted on the bottom of the fixed box (1), a rotating core (42) is rotatably connected in the housing (41), the rotating core (42) is coaxially mounted on the bottom of the support shaft (35), the rotating core (42) is eccentrically mounted in the housing (41) and forms a chamber (43) between the rotating core (42) and the housing (41), and a water inlet pipe (46) and a water outlet pipe (47) are connected and mounted on the chamber (43). From the water inlet pipe (46) to the water outlet pipe (47), the space of the chamber (43) first increases and then decreases, and a plurality of slides (44) are slidably connected to the rotating core (42).

7. The coal mining machine hydraulic negative pressure dust removal device according to claim 6, characterized in that: An elastic member (45) is provided on the rotating core (42) for pulling the sliding plate (44) to slide toward the inside of the rotating core (42).

8. The coal mining machine hydraulic negative pressure dust removal device according to claim 6, characterized in that: The fixed box (1) comprises a box body (11), one side of the box body (11) is open and fixedly mounted with a protective net (12), a plurality of guide plates (13) are obliquely mounted in the box body (11), and the plurality of guide plates (13) form a plurality of air ducts. A water storage tank (5) is installed on the fixed box (1), and the drain outlet and the water inlet pipe (46) at the bottom of the outer cavity (33) are both connected to the water storage tank (5).

9. The coal mining machine hydraulic negative pressure dust removal device according to claim 8, characterized in that: A connecting pipe (6) connected to the water outlet pipe (47) is installed in the box (11), and a plurality of atomizing nozzles (7) are connected to the connecting pipe (6). A plurality of embedded tubes (14) are fixedly mounted on the box body (11), and the atomizing nozzles (7) are mounted in corresponding embedded tubes (14).

10. The coal mining machine hydraulic negative pressure dust removal device according to any one of claims 1 to 9, characterized in that: A drive motor (8) is mounted on the fixed box (1), and an output shaft of the drive motor (8) is detachably connected to the end of the support shaft (35).

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