Continuous miner wet dusting device

Abstract

The present application relates to the technical field of wet dust removal, and discloses a continuous miner wet dust removal device, which comprises an explosion-proof impeller assembly, a water mist sprayer, a filter box, a first filter plate rotatable in the filter box, a filter plate cleaning assembly, a feedback mechanism and a conversion mechanism. The feedback mechanism comprises two groups of containing cavities, a rack assembly and a communicating waterway control assembly for controlling the differential intermittent overturning of the first filter plate. The water level drives the rack to drive the filter plate to reciprocatingly overturn, so as to internally and externally wash and break the mud film blockage of the filter plate. The conversion mechanism comprises a telescopic partition plate, a coiled filter screen and a matched extrusion linkage assembly, cooperates with a two-stage filter plate linkage vibration and dirt removal assembly, and the second filter plate is provided with a fine filter structure and a matched turbine worm oscillation and vibration mechanism to remove adhered dirt. The present application solves the technical problem that the single-bin continuous miner wet dust removal device must be completely stopped during filter plate backflushing operation and is prone to form a dense mud film on the surface of the filter plate, so that the filter plate is completely disabled.

Description

Technical Field

[0001] This invention relates to the field of wet dust removal technology, and more specifically, to a wet dust removal device for a continuous mining machine. Background Technology

[0002] During the cutting operation of continuous coal mining machines in underground coal mines, a large amount of high-concentration coal and rock dust is generated. In order to reduce the dust concentration in the working area and eliminate the hazards of coal dust explosion and pneumoconiosis, wet dust removal devices are generally installed on site to purify the dust-laden airflow.

[0003] Currently, wet dust collection equipment is divided into two types: dual-compartment and single-compartment. Dual-compartment dust collection can achieve one compartment for filtration and the other for offline backwashing and cleaning without stopping the machine. However, it is large in size, occupies roadway space, and affects passage. Although the dust concentration in small and medium-sized mines is generally high, due to space limitations, only the more compact single-compartment wet dust collection device can be selected.

[0004] However, in practical applications, the wet dust removal device for single-compartment continuous mining machines has only a single filter chamber. When the filter plate is backflushed for cleaning, the entire machine must be shut down. Furthermore, when the continuous mining machine is excavating faults or soft rock layers rich in clay minerals, the dust easily forms highly viscous coal slurry when it comes into contact with water. This coal slurry easily forms a dense mud film on the surface of the filter plate, causing the filter plate's filtration performance to decline rapidly and eventually become completely ineffective. Summary of the Invention

[0005] This invention provides a wet dust removal device for continuous mining machines, which solves the technical problem in related technologies that when performing backwashing cleaning of filter plates in wet dust removal devices for single-compartment continuous mining machines, the entire machine must be shut down and a dense mud film is easily formed on the surface of the filter plates, resulting in rapid degradation of the filter plate's filtration performance and failure.

[0006] This invention provides a wet dust removal device for a continuous mining machine, including an explosion-proof impeller assembly, a water mist nozzle, a filter box and a rotatable first filter plate inside the box, and further comprising:

[0007] A filter plate cleaning assembly, comprising a scraper and a high-pressure nozzle mounted on the first filter plate;

[0008] The feedback mechanism, which is set inside the filter box and used to provide feedback on the filter plate cleaning signal, includes a first moving plate and a first limiting plate. Pressure sensors are set at the four corners of the bottom of the first limiting plate. It also includes two sets of receiving cavities and a controller. Each set of receiving cavities is equipped with an inlet solenoid check valve and an outlet solenoid check valve. A second moving plate and a first liquid level sensor are set inside the cavity. A rack that drives the first filter plate to rotate is fixed on the second moving plate.

[0009] The switching mechanism, located below the first filter plate and used to switch the synchronous operation of filtration and washing, includes a telescopic partition and a rollable filter screen connected to one side of the first filter plate. An L-shaped dirt collection plate is fixedly installed below the telescopic partition.

[0010] Preferably, the first filter plate has two sliding grooves, and an annular sleeve plate is provided between the two sliding grooves. The two sides of the annular sleeve plate are respectively slidably engaged with the sliding grooves. A sealing device is provided between the annular sleeve plate and the sliding grooves. The scraper is fixedly installed on the upper side of the annular sleeve plate, the high-pressure nozzle is fixedly installed on the bottom surface of the annular sleeve plate, and a counterweight is fixedly installed on the upper end of the annular sleeve plate.

[0011] Preferably, the first filter plate is provided with an L-shaped baffle, and a retaining strip is fixed at the bottom of the L-shaped baffle. The end of the rollable filter screen is engaged with the inner side of the retaining strip. The rollable filter screen is equipped with a rotating shaft, which is rotatably connected to the side wall of the filter box. A coil spring is provided at the connection between the rotating shaft and the side wall.

[0012] Preferably, an L-shaped extrusion plate and a set of T-shaped extrusion plates are fixedly provided on the lower end of the first filter plate near the L-shaped sludge collection plate. The front and back of the first filter plate are rotatably connected to a first gear, which meshes with a rack for transmission.

[0013] Preferably, the telescopic partition includes a fixed plate and a movable plate, the movable plate being slidably inserted into the fixed plate; a sliding groove is provided on the inner side of the fixed plate, and multiple round rods are fixedly installed in the sliding groove, each round rod having a cylindrical through groove along its axis; a long groove is provided on the movable plate at a position corresponding to the round rod, and an inserted long rod is fixedly installed at the bottom end of the long groove, with a compression spring sleeved on the outer side of the inserted long rod.

[0014] Preferably, a second filter plate is provided between the L-shaped sludge collection plate and the first limiting plate, and a plurality of locking blocks are fixedly provided on the lower side of the filter box, and the first filter plate is inclined to the left.

[0015] Preferably, each of the racks is provided with a protective shell on its outer side, the filter box is fixedly provided with shell lugs on both sides of the protective shell, a limiting buckle is fixedly provided inside the protective shell, a worm gear is rotatably connected to the limiting buckle, a turbine is provided above the second filter plate corresponding to the worm gear, the turbine gear meshes with the rack for transmission, and a swing rod is fixedly installed at the end of the worm gear away from the rack.

[0016] Preferably, the side wall of the filter box is provided with a first connecting pipe and a second connecting pipe. One end of the first connecting pipe is connected to the upper side of the telescopic partition plate, and the other end is connected to the upper side of the second filter plate. One end of the second connecting pipe is connected to the lower side of the first movable plate, and the other end is connected to the upper side of the first limiting plate. A first suction pump and a second suction pump are installed on the right side of the filter box. The first suction pump is arranged corresponding to the L-shaped sludge collection plate, and the second suction pump is arranged corresponding to the upper part of the second filter plate. The second suction pump is connected to a suction pipe, and a strip-shaped sludge collection suction head is fixedly installed inside the filter box through the suction pipe.

[0017] Preferably, a second limiting plate is fixedly installed inside the filter box below the first movable plate. The high-pressure nozzle is connected to a telescopic tube, the end of which extends to the bottom of the second limiting plate and is connected to a first water pump. A second liquid level sensor is fixedly installed on the inner wall of the filter box below the second limiting plate. An output pipe is connected to the water outlet solenoid check valve, the end of which passes through the second limiting plate and extends to its lower side. A spray pipe is fixedly installed on the side wall of the filter box below the second limiting plate. A second water pump is fixedly installed on the spray pipe, and the end of the spray pipe is connected to a water mist nozzle, which is located above the first filter plate.

[0018] More preferably, an L-shaped shell is provided on the right side of the filter box, and a sludge storage area is provided inside the L-shaped shell. A sludge suction chamber is provided above the filter box, and a sludge suction cylinder is installed on the left side of the sludge suction chamber. The explosion-proof impeller assembly is installed on the right side of the sludge suction chamber. Dustproof nets are provided on both the sludge suction cylinder and the explosion-proof impeller assembly. A bracket is fixed to the bottom of the filter box and the L-shaped shell.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. This invention, through a feedback mechanism, two sets of receiving cavities and a rack and pinion linkage structure, can automatically trigger the first filter plate to flip and self-clean when the water in the box accumulates to a set amount. In conjunction with the scraper on the annular sleeve plate and the high-pressure nozzle, it can simultaneously scrape and backwash, peeling off the caking coal slime from the first filter plate, completely eliminating the problem of dense mud film clogging on the filter plate surface. This solves the technical problem in related technologies where wet dust removal devices for single-compartment continuous mining machines easily form dense mud film on the filter plate surface, resulting in rapid decline in filter plate filtration performance and failure.

[0021] 2. This invention adopts a synchronous switching structure for filtration and washing, and an intermittent filter plate flipping operation mode. Through the cooperation of telescopic partition and rollable filter screen, it rolls up during filtration and extends during washing. The L-shaped dirt collection plate collects the washing dirt in a concentrated manner, and the second filter plate forms a water film to adsorb fine dust. Combined with the worm gear linkage swing rod to generate continuous micro-vibration, it can simultaneously remove the fine wet clumps with weak adhesion, prevent fine dust from re-accumulating and forming secondary blockage, and reduce the number of downtimes during cleaning operations.

[0022] 3. The present invention drives the first filter plate to flip while simultaneously vibrating the second filter plate. The flipping cleaning and fine dust sweeping are carried out simultaneously. A single cleaning structure alone cannot achieve this synergistic effect. The combination of the two-stage filter plate cleaning mechanism has a dual self-cleaning and efficiency-enhancing effect.

[0023] 4. This invention adopts a pressure sensor for water accumulation sensing and a liquid level valve group linkage control mode to achieve trigger-based automatic cleaning. The filter plate flipping and cleaning process is only started after the filter plate has accumulated dirt and water to the standard. When there is no dirt, the solenoid valve and transmission mechanism remain stationary, eliminating the phenomenon of the equipment running back and forth under no-load.

[0024] 5. This invention features a water circulation pipeline to enable the recycling and reuse of clean water in the mine, and a graded suction pump to collect coarse and fine coal sludge in separate zones for centralized storage in the sludge storage area. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of the filter box and L-shaped housing of the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of the filter box of the present invention. Figure 1 ;

[0028] Figure 4 This is a schematic diagram of the internal structure of the filter box of the present invention. Figure 2 ;

[0029] Figure 5 This is a schematic diagram of the state of the first filter plate when it is flipped.

[0030] Figure 6 This is a schematic diagram of the rollable filter structure of the present invention;

[0031] Figure 7 This is a schematic diagram of the telescopic partition structure of the present invention;

[0032] Figure 8 This is a schematic diagram of the external structure of the filter box of the present invention;

[0033] Figure 9 for Figure 4 Enlarged view of the structure at point A in the image;

[0034] Figure 10 This is a schematic diagram of the suction chamber structure of the present invention.

[0035] In the diagram: 1. Explosion-proof impeller assembly; 2. Water mist nozzle; 21. Spray pipe; 22. Second water pump; 3. Filter box; 31. Controller; 32. Locking block; 33. Protective shell; 331. Shell support lug; 332. Limit buckle; 333. Worm gear; 334. Turbine; 335. Swing rod; 34. First connecting pipe; 35. Second connecting pipe; 36. First sewage pump; 37. Second sewage pump; 371. Suction pipe; 372. Strip-shaped sewage collection head; 4. First filter plate; 41. Scraper; 42. High-pressure nozzle; 421. Telescopic long pipe; 422. First water pump; 43. Slide groove; 431. Sealing device; 44. Annular sleeve; 45. Counterweight; 46. L-shaped baffle; 47. Locking strip; 5. Feedback mechanism; 51. First moving plate; 52. First limiting plate; 521. Second limiting plate 53. Position plate; 54. Pressure sensor; 55. Receiving cavity; 56. Inlet solenoid check valve; 57. Outlet solenoid check valve; 58. Output pipe; 59. Second moving plate; 60. First liquid level sensor; 61. Second liquid level sensor; 72. Rack; 83. Conversion mechanism; 94. Telescopic partition; 105. Fixed plate; 116. Movable plate; 12. Sliding groove; 13. Round rod; 14. Cylindrical through groove; 15. Long groove; 16. Insertable long rod; 17. Compression spring; 18. Rollable filter screen; 19. Rotating shaft; 10. Coil spring; 11. L-shaped sludge collection plate; 12. L-shaped extrusion plate; 13. T-shaped extrusion plate; 14. First gear; 15. Second filter plate; 16. L-shaped housing; 17. Sludge storage area; 18. Support; 19. Sludge suction chamber; 20. Sludge suction cylinder; 21. Dustproof net. Detailed Implementation

[0036] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, some features described in the examples may be combined in other examples.

[0037] like Figure 1 - Figure 3 As shown, this embodiment provides a wet dust removal device for a continuous mining machine, including an explosion-proof impeller assembly 1, a water mist nozzle 2, a filter box 3 and a first filter plate 4 that can be rotated inside the box. The explosion-proof impeller assembly 1 rotates at high speed to form a negative pressure, and the water mist nozzle 2 continuously sprays fine water mist to adsorb and settle most of the dust impurities in the gas. The first filter plate 4 filters the impurities.

[0038] It also includes a filter plate cleaning assembly, with scraper 41 and high-pressure nozzle 42 installed on the first filter plate 4. The scraper 41 and high-pressure nozzle 42 can scrape and wash the highly viscous coal slime on the first filter plate 4. After spraying, 80% of the dust becomes >20 micron wet clumps, 15% becomes 5-20 microns, and 5% is less than 5 microns. By backflushing the first layer of filter plates, impurities can be removed in a targeted manner. The first layer of filter plates: coarse filtration >20um, intercepting 80%-90% of large wet clumps, thick mud, and caking. Mechanical cleaning is required by scraping and backflushing.

[0039] Among them, such as Figure 2 - Figure 7 As shown, the feedback mechanism 5 is installed inside the filter box 3 and is used to provide feedback on the filter plate cleaning signal. It includes a first moving plate 51 and a first limiting plate 52. Pressure sensors 53 are installed at the four corners of the bottom of the first limiting plate 52. It also includes two sets of receiving cavities 54 and a controller 31. Each set of receiving cavities 54 is equipped with an inlet solenoid check valve 55 and an outlet solenoid check valve 56. A second moving plate 57 and a first liquid level sensor 58 are installed inside the cavity. A rack 59 is fixedly mounted on each of the second moving plates 57 to drive the first filter plate 4 to rotate. When the equipment is working... The filtered water collects below the first movable plate 51. As the water volume increases, the water pressure pushes the first movable plate 51 upward until it contacts the pressure sensor 53. The pressure sensor 53 transmits a detection signal to the controller 31. Upon receiving the signal, the controller 31 controls the inlet solenoid check valve 55 to open, allowing water to enter the receiving cavity 54. The water pressure pushes the second movable plate 57 upward. When the water level reaches the preset height of the first liquid level sensor 58, the first liquid level sensor 58 sends a feedback signal to the controller 31, which then controls the outlet... When the water solenoid check valve 56 opens, the receiving cavity 54 is connected to the external water supply circuit via the opened inlet solenoid check valve 55. The water level inside the receiving cavity 54 remains flush with the water level of the external water supply circuit. The outlet solenoid check valve 56 continuously drains water outward, and the water level inside the receiving cavity 54 and the external water supply circuit descend slowly and synchronously. The water pressure inside the cavity decreases synchronously, causing the second moving plate 57 to move smoothly downward. Through the reciprocating motion of the rack 59, the first filter plate 4 is driven to flip back and forth, realizing automatic flipping and cleaning of the filter plate. The filter plate quickly flips, passing through the water mist. Relying on the impact force and inertia of the water flow, it quickly washes away the thick dust clumps and efficiently unclogs the filter holes. The filter plate moves slowly in the reverse direction, allowing the water mist to fully penetrate the filter holes and wash away the residual fine dust. At the same time, the falling back buffer will not stir up the sewage and cause secondary dust. The filter plate self-cleaning program is automatically triggered by detecting the amount of water accumulated under the first moving plate 51. The flipping speed of the first filter plate 4 can be controlled by adjusting the water flow rate of the inlet solenoid one-way valve 55 and the outlet solenoid one-way valve 56, thereby controlling the cleaning intensity.

[0040] The switching mechanism 6 is located below the first filter plate 4 and is used to switch between filtration and washing synchronous operation. It includes a telescopic partition 61 and a rollable filter screen 62 connected to one side of the first filter plate 4. An L-shaped dirt collection plate 63 is fixedly installed below the telescopic partition 61. During filtration, the telescopic partition 61 extends naturally, and impurities are purified by passing through the first filter plate 4. When the filter plate is self-cleaning and flipped, the telescopic partition 61 retracts, and the dirt generated by rinsing falls directly into the L-shaped dirt collection plate 63 for centralized collection. The rollable filter screen 62 unfolds to assist in intercepting fine dust, and the rinsed impurities fall into the side wall for discharge. A drain port can be set on the side wall below the rollable filter screen 62 to realize free switching between filtration and washing operation without interference.

[0041] The first filter plate 4 has two sliding grooves 43, and an annular sleeve plate 44 is provided between the two sliding grooves 43. The two sides of the annular sleeve plate 44 are respectively slidably engaged with the sliding grooves 43. A sealing device 431 is provided between the annular sleeve plate 44 and the sliding grooves 43. The scraper 41 is fixedly installed on the upper side of the annular sleeve plate 44, and the high-pressure nozzle 42 is fixedly installed on the bottom surface of the annular sleeve plate 44. A counterweight 45 is fixedly installed on the upper end of the annular sleeve plate 44. Two drive sources symmetrically arranged in the sealing device 431 drive the two sealing elements to always be in contact with the two sides of the annular sleeve plate 44 and move relative to each other. This is the prior art.

[0042] The first filter plate 4 is provided with an L-shaped baffle 46. A retaining strip 47 is fixed at the bottom of the L-shaped baffle 46. The end of the rollable filter screen 62 is engaged with the inside of the retaining strip 47. The rollable filter screen 62 is equipped with a rotating shaft 621. The rotating shaft 621 is rotatably connected to the side wall of the filter box 3. A coil spring 622 is provided at the connection between the rotating shaft 621 and the side wall. The coil spring 622 enables the rollable filter screen 62 to return to its initial state when the first filter plate 4 returns to its initial state.

[0043] An L-shaped extrusion plate 64 and a set of T-shaped extrusion plates 65 are fixedly provided on the lower end of the first filter plate 4 near the L-shaped sludge collection plate 63. The front and back of the first filter plate 4 are rotatably connected to the first gear 66, which meshes with the rack 59 for transmission. The L-shaped extrusion plate 64 has an arc-shaped area at the turning point, which is conducive to the smooth retraction of the telescopic partition 61. The T-shaped extrusion plate 65 is for the smooth entry of water from the high-pressure nozzle 42 into the lower part of the first filter plate 4.

[0044] The telescopic partition 61 includes a fixed plate 611 and a movable plate 612. The movable plate 612 is slidably inserted into the fixed plate 611. A sliding groove 613 is provided on the inner side of the fixed plate 611. Multiple round rods 614 are fixed in the sliding groove 613. Each round rod 614 has a cylindrical through groove 615 along its axis. A long groove 616 is provided on the movable plate 612 at the corresponding position of the round rods 614. A long rod 617 is fixed at the bottom of the long groove 616. A compression spring 618 is sleeved on the outside of the long rod 617.

[0045] Among them, such as Figure 2 - Figure 10 As shown, a second filter plate 7 is provided between the L-shaped sludge collection plate 63 and the first limiting plate 52, which is inclined to the right. The filter box 3 is fixed with multiple locking blocks 32 on the lower side of the second filter plate 7. The first filter plate 4 is inclined to the left. The first filter plate 4 is inclined to the left so that the annular sleeve plate 44 can return to its original position when rotating. The two ends of the first filter plate 4 are provided with elastic rubber areas to adapt to slight deformation and buffer. The second filter plate 7 provides fine filtration, intercepting residual small wet clumps smaller than 20um. The adhesion is weak. Water formed by the continued filtration above flows to form a water film. Slight vibration can dislodge dirt that is stuck to the filter screen.

[0046] Each rack 59 is provided with a protective shell 33 on the outside. The filter box 3 is provided with shell lugs 331 on both sides of the protective shell 33. A limit buckle 332 is fixed inside the protective shell 33. A worm gear 333 is rotatably connected to the limit buckle 332. A turbine 334 is provided above the worm gear 333 on the second filter plate 7. The turbine 334 meshes with the rack 59 for transmission. A swing rod 335 is fixedly installed at the end of the worm gear 333 away from the rack 59. The rack 59 drives the turbine 334 to rotate, thereby driving the worm gear 333 to rotate, driving the swing rod 335 to rotate along the worm gear 333, thereby driving the second filter plate 7 to vibrate regularly.

[0047] The filter box 3 has a first connecting pipe 34 and a second connecting pipe 35 on its side wall. One end of the first connecting pipe 34 is connected to the upper side of the telescopic partition 61, and the other end is connected to the upper side of the second filter plate 7. One end of the second connecting pipe 35 is connected to the lower side of the first moving plate 51, and the other end is connected to the upper side of the first limiting plate 52. A first suction pump 36 and a second suction pump 37 are installed on the right side of the filter box 3. The first suction pump 36 is arranged corresponding to the L-shaped sludge collection plate 63, and the second suction pump 37 is arranged corresponding to the upper part of the second filter plate 7. The second suction pump 37 is connected to a suction pipe 371, and the suction pipe 371 extends into the inside of the filter box 3 and is fixedly installed with a strip-shaped sludge collection suction head 372.

[0048] Inside the filter box 3, a second limiting plate 521 is fixedly installed below the first movable plate 51. A high-pressure nozzle 42 is connected to a telescopic tube 421, the end of which extends below the second limiting plate 521 and is connected to a first water pump 422. A second liquid level sensor 581 is fixedly installed on the inner wall of the filter box 3 below the second limiting plate 521. An output pipe 561 is connected to the water outlet solenoid check valve 56, and the end of the output pipe 561 passes through the second limiting plate 521. 1. Extending to its lower side, a spray pipe 21 is fixedly installed on the side wall of the filter box 3 below the second limiting plate 521. A second water suction pump 22 is fixed on the spray pipe 21. The end of the spray pipe 21 is connected to the water mist nozzle 2. The water mist nozzle 2 is located above the first filter plate 4. The second liquid level sensor 581 works with the controller 31 to control the second water suction pump 22 and the first water suction pump 422. When the water level is too low, the water supply of the high pressure nozzle 42 and the water mist nozzle 2 is restricted to prevent the water pump from running dry and burning out.

[0049] An L-shaped housing 8 is provided on the right side of the filter box 3. A sludge storage area 81 is provided inside the L-shaped housing 8. A sludge suction chamber 9 is provided above the filter box 3. A sludge suction cylinder 91 is installed on the left side of the sludge suction chamber 9. An explosion-proof impeller assembly 1 is installed on the right side of the sludge suction chamber 9. Dustproof nets 92 are provided on both the sludge suction cylinder 91 and the explosion-proof impeller assembly 1. A bracket 82 is fixed at the bottom of the filter box 3 and the L-shaped housing 8.

[0050] The specific working principle of this implementation is as follows: First, the explosion-proof impeller assembly 1 operates to form a negative pressure. The water mist nozzle 2 sprays water to cause the dust to condense into wet clumps of different particle sizes. The airflow first passes through the inclined first filter plate 4 for coarse filtration, which intercepts large particles of coal slime. Fine dust particles smaller than 20μm are finely filtered by the second filter plate 7. Finally, relatively clean water is obtained and then sprayed again by the water mist nozzle through the second water pump, thus recycling water resources.

[0051] As time progresses, the accumulated filtered water pushes up the first moving plate 51, which touches the pressure sensor 53. The signal is transmitted to the controller 31, which opens the inlet solenoid check valve 55. Clean water enters the receiving chamber 54, raising the second moving plate 57. When the water level reaches the set value of the first liquid level sensor 58, the controller only opens the outlet solenoid check valve 56. The receiving chamber 54 and the water supply circuit form a communication channel, and the internal and external liquid levels drop synchronously. The rack 59 drives the first filter plate 4 to flip back and forth. The first filter plate 4 flips rapidly in the forward direction, accompanied by the scraper 41 on the annular sleeve 44 and the high-pressure nozzle 42 scraping and backwashing to remove the highly viscous sludge accumulated on the filter plate. It flips slowly in the reverse direction to rinse the fine dust in the micropores. When the first liquid level sensor 58 detects that the water level in the receiving chamber 54 has dropped to the lowest water level, the rack synchronously drives the second limit plate 521 to reset to the initial position. The controller 31 closes the inlet solenoid check valve 55 and the outlet solenoid check valve 56, and the single filter plate cleaning process ends.

[0052] Fine dust particles smaller than 20μm are adsorbed by the water film formed by the second filter plate 7. The rack 59 lifts and moves in conjunction with the turbine 334 and worm 333, which drives the swing rod 335 to make the second filter plate 7 vibrate continuously to remove the adhering dirt, reducing the number of downtimes during cleaning operations.

[0053] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A wet dust removal device for a continuous mining machine, comprising an explosion-proof impeller assembly (1), a water mist nozzle (2), a filter box (3), and a rotatable first filter plate (4) inside the box, characterized in that, Also includes: The filter plate cleaning assembly consists of a scraper (41) and a high-pressure nozzle (42) disposed on the first filter plate (4). Feedback mechanism (5), which is set in the filter box (3) and used to provide feedback on filter plate cleaning signal, includes a first moving plate (51) and a first limiting plate (52). Pressure sensors (53) are set at the four corners of the bottom of the first limiting plate (52). It also includes two sets of receiving cavities (54) and a controller (31). Each set of receiving cavities (54) is equipped with an inlet solenoid check valve (55) and an outlet solenoid check valve (56). A second moving plate (57) and a first liquid level sensor (58) are set in the cavity. A rack (59) for driving the first filter plate (4) to rotate is fixed on the second moving plate (57). The switching mechanism (6) is located below the first filter plate (4) and is used to switch the synchronous operation of filtration and washing. It includes a telescopic partition (61) and a rollable filter screen (62) connected to one side of the first filter plate (4). An L-shaped dirt collection plate (63) is fixedly installed below the telescopic partition (61).

2. The wet dust removal device for a continuous mining machine according to claim 1, characterized in that, The first filter plate (4) has two sliding grooves (43), and an annular sleeve plate (44) is provided between the two sliding grooves (43). The two sides of the annular sleeve plate (44) are respectively slidably engaged with the sliding grooves (43). A sealing device (431) is provided between the annular sleeve plate (44) and the sliding grooves (43). The scraper (41) is fixedly installed on the upper side of the annular sleeve plate (44). The high-pressure nozzle (42) is fixedly installed on the bottom surface of the annular sleeve plate (44). A counterweight (45) is fixedly installed on the upper end of the annular sleeve plate (44).

3. The wet dust removal device for a continuous mining machine according to claim 2, characterized in that, The first filter plate (4) is provided with an L-shaped baffle (46), and a retaining strip (47) is fixed at the bottom of the L-shaped baffle (46). The end of the rollable filter screen (62) is engaged with the inside of the retaining strip (47). The rollable filter screen (62) is equipped with a rotating shaft (621). The rotating shaft (621) is rotatably connected to the side wall of the filter box (3). A coil spring (622) is provided at the connection between the rotating shaft (621) and the side wall.

4. The wet dust removal device for a continuous mining machine according to claim 3, characterized in that, An L-shaped extrusion plate (64) and a set of T-shaped extrusion plates (65) are fixedly provided on the lower end of the first filter plate (4) near the L-shaped sludge collection plate (63). The first filter plate (4) is rotatably connected to the front and back sides with a first gear (66), which meshes with a rack (59) for transmission.

5. A wet dust removal device for a continuous mining machine according to claim 1, characterized in that, The telescopic partition (61) includes a fixed plate (611) and a movable plate (612). The movable plate (612) is slidably inserted into the fixed plate (611). A sliding groove (613) is provided on the inner side of the fixed plate (611). Multiple round rods (614) are fixed in the sliding groove (613). Each round rod (614) has a cylindrical through groove (615) along its axis. A long groove (616) is provided on the movable plate (612) at the position corresponding to the round rod (614). A plug-in long rod (617) is fixed at the bottom end of the long groove (616). A compression spring (618) is sleeved on the outer side of the plug-in long rod (617).

6. The wet dust removal device for a continuous mining machine according to claim 1, characterized in that, A second filter plate (7) is provided between the L-shaped sludge collection plate (63) and the first limiting plate (52) and is arranged to the right. The filter box (3) is fixed with multiple locking blocks (32) on the lower side of the second filter plate (7). The first filter plate (4) is inclined to the left.

7. A wet dust removal device for a continuous mining machine according to claim 6, characterized in that, Each of the racks (59) is provided with a protective shell (33) on the outside. The filter box (3) is provided with shell lugs (331) on both sides of the protective shell (33). A limiting buckle (332) is fixed inside the protective shell (33). A worm gear (333) is rotatably connected to the limiting buckle (332). A turbine (334) is provided above the second filter plate (7) corresponding to the worm gear (333). The turbine (334) meshes with the rack (59) for transmission. A swing rod (335) is fixedly installed at the end of the worm gear (333) away from the rack (59).

8. A wet dust removal device for a continuous mining machine according to claim 6, characterized in that, The filter box (3) has a first connecting pipe (34) and a second connecting pipe (35) on its side wall. One end of the first connecting pipe (34) is connected to the upper side of the telescopic partition (61), and the other end is connected to the upper side of the second filter plate (7). One end of the second connecting pipe (35) is connected to the lower side of the first moving plate (51), and the other end is connected to the upper side of the first limiting plate (52). A first suction pump (36) and a second suction pump (37) are installed on the right side of the filter box (3). The first suction pump (36) is arranged corresponding to the L-shaped sludge collection plate (63), and the second suction pump (37) is arranged corresponding to the upper part of the second filter plate (7). The second suction pump (37) is connected to a suction pipe (371). The suction pipe (371) extends into the filter box (3) and is fixedly installed with a strip-shaped sludge collection head (372).

9. A wet dust removal device for a continuous mining machine according to claim 1, characterized in that, The filter box (3) is equipped with a second limiting plate (521) located below the first moving plate (51). The high-pressure nozzle (42) is connected to a telescopic tube (421). The end of the telescopic tube (421) extends to the bottom of the second limiting plate (521) and is connected to a first water pump (422). The inner wall of the filter box (3) is equipped with a second liquid level sensor (581) located below the second limiting plate (521). The water outlet solenoid check valve (56) is connected to an output pipe (561). The end of the output pipe (561) passes through the second limiting plate (521) and extends to its lower side. The side wall of the filter box (3) is equipped with a spray pipe (21) located below the second limiting plate (521). The spray pipe (21) is equipped with a second water pump (22). The end of the spray pipe (21) is connected to a water mist nozzle (2). The water mist nozzle (2) is located above the first filter plate (4).

10. A wet dust removal device for a continuous mining machine according to claim 1, characterized in that, An L-shaped housing (8) is provided on the right side of the filter box (3). A sludge storage area (81) is provided inside the L-shaped housing (8). A sludge suction chamber (9) is provided above the filter box (3). A sludge suction cylinder (91) is installed on the left side of the sludge suction chamber (9). An explosion-proof impeller assembly (1) is installed on the right side of the sludge suction chamber (9). Dustproof nets (92) are provided on both the sludge suction cylinder (91) and the explosion-proof impeller assembly (1). A bracket (82) is fixed at the bottom of the filter box (3) and the L-shaped housing (8).

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