Wet dust removal device for underground coal mine and use method of wet dust removal device

Abstract

The invention provides a wet-type dust removal device for an underground coal mine and a using method thereof, and belongs to the technical field of dust removal, and the technical scheme is that the wet-type dust removal device for the underground coal mine comprises a barrel, a mounting ring is fixed to the open end of the barrel, a filter screen is arranged in the mounting ring, and a mounting block is fixed to the outer side face of the filter screen; a connecting hole is formed in the wall thickness of the side wall of the barrel, a connecting rod is installed in the connecting hole, a driving mechanism is arranged in the barrel, and the driving mechanism can control the connecting rod to periodically impact the installation block. An air draft mechanism and a spraying mechanism are further arranged in the barrel body, the air draft mechanism can suck air into the barrel body from the filter screen, the spraying mechanism can spray water mist into the barrel body, and a flocculation mechanism is arranged at the top of the barrel body and can periodically drip a flocculating agent into the barrel body. The device is based on an automatic cleaning mode of periodic vibration, and the problem that a filter screen is blocked by dust chippings during mechanical extrusion cleaning of a traditional brush plate is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of dust removal, and in particular relates to a wet dust removal device for underground coal mines and a method of using the device. Background Art

[0002] Dust pollution is a critical threat to the safety of the working environment and the health of workers during underground coal mine operations. Wet dust removal, a crucial piece of equipment for underground coal mine dust control, achieves dust reduction through the physical combination of water and dust. Its high dust removal efficiency and low energy consumption make it a mainstream choice for underground dust control. Wet dust removal uses water curtains and sprays to bind to dust particles, promoting dust settling. This plays an irreplaceable role in ensuring air quality in the working environment and reducing occupational health risks.

[0003] Existing wet dust removal devices include components such as a dust removal box, a fan, a filter, a spray system, and a control box. The specific working principle is as follows: the fan is started through the control box, and the fan drives the impeller to rotate at high speed to generate negative pressure suction, sucking the dust-containing air from the outside into the dust removal box. When the air enters the dust removal box, it first passes through the filter inside the windward cylinder. The pore size interception effect of the filter is used to preliminarily filter the dust in the air and reduce the dust content. During the rotation of the impeller, the cam connected to it drives the cleaning mechanism consisting of a collar, an extension plate, a push rod, and a brush plate to rotate synchronously through the connecting shaft. The brush plate moves in a circular motion against the inner wall of the filter, scrubbing the dust attached to the filter to prevent dust from clogging the mesh. At the same time, the spray system sprays water mist into the dust removal box, mixing it with the preliminarily filtered air, so that the remaining dust particles combine with water droplets to form larger particles, which are accelerated to settle to the bottom of the dust removal box.

[0004] However, because underground coal mine dust often contains sticky substances like coal tar, the dust particles are highly viscous. When cleaning with a hard brush, the mechanical squeezing action of the brush breaks the sticky dust into smaller fragments. These tiny fragments can become lodged in the mesh gaps of the filter, forming a clogged layer that is even more difficult to clean. As the clog increases, the filter's ventilation resistance increases significantly, reducing the dust removal efficiency of the unit and even causing fan overload failures. Summary of the Invention

[0005] The present invention addresses the problem that existing wet dust removal devices squeeze sticky dust into the mesh holes when cleaning the filter, causing the filter to be clogged. The present invention provides a wet dust removal device for use in coal mines, which can prevent sticky dust from being squeezed into the mesh holes and thus prevent the filter from being clogged due to this problem, and a method for using the device.

[0006] To solve the above problems, the technical solution adopted by the present invention is a wet dust removal device for underground coal mines, comprising a cylinder, one end of the cylinder is a closed end, and the other end is an open end, a mounting ring is fixed to the open end of the cylinder, a mounting groove is provided on the plane of the mounting ring away from the cylinder, a filter is provided inside the mounting ring, an outer side of the filter is fixed with a mounting block, the mounting block is clamped in the mounting groove, a detachable stopper is provided in the mounting groove, the stopper can limit the mounting block in the mounting groove, a connecting hole is provided in the wall thickness of the side wall of the cylinder, the connecting hole is connected to the mounting groove, a connecting rod is installed in the connecting hole, a driving mechanism is provided inside the cylinder, the driving mechanism can control the connecting rod to periodically hit the mounting block, an exhaust mechanism and a spray mechanism are also provided inside the cylinder, the exhaust mechanism can suck air from the filter into the interior of the cylinder, the spray mechanism can spray water mist into the interior of the cylinder, a flocculation mechanism is provided on the top of the cylinder, the flocculation mechanism can periodically drip flocculant into the interior of the cylinder, and a plurality of air outlet holes are provided on the side wall of the cylinder near the closed end.

[0007] In the present technical solution, a filter is provided inside the mounting ring, and a mounting block is fixed on the outer side of the filter. The mounting block can be snapped into the mounting groove and limited by a block. The exhaust mechanism can draw air from the filter into the interior of the cylinder, and the spray mechanism sprays water mist into the interior of the cylinder. The water mist absorbs dust to form waste liquid that falls to the bottom of the cylinder, and the flocculation mechanism periodically drips flocculant, which can flocculate impurities in the waste liquid for subsequent treatment. When the filter filters the air, the driving mechanism can control the connecting rod to periodically hit the mounting block, causing the filter to vibrate periodically, which can effectively shake off the dust adhered to the mesh. Therefore, the present device realizes automatic cleaning of dust through the periodic vibration of the filter, avoiding the problem of dust debris clogging the mesh due to mechanical extrusion of the traditional brush plate.

[0008] Furthermore, a fixing groove is provided on the surface of the mounting ring facing away from the barrel. The fixing groove is located outside the mounting groove and communicates with the mounting groove. A guide hole is provided at the bottom of the fixing groove, and a locking hole is provided at the bottom of the guide hole. The locking hole has a larger diameter than the guide hole. The top of the stopper is hingedly connected to the outer wall of the mounting ring. A fixing block is fixed to the outside of the stopper, which is located within the fixing groove. A guide rod is fixed to the side of the fixing block near the guide hole. The diameter of the guide rod is the same as the inner diameter of the guide hole. An expansion head is fixed to the end of the guide rod, which has an interference fit with the locking hole. The stopper opens and closes by hingedly rotating. During installation, the filter screen mounting block is simply snapped into the mounting groove and then flipped to retract the block. Assembly can be completed without tools such as wrenches, significantly reducing the time and cost of downhole equipment maintenance. After the expansion head passes through the guide hole and enters the larger locking hole, the interference fit generates a radial expansion force, creating a self-locking effect similar to that of a wedge. This not only resists loosening caused by downhole vibration but also maintains long-term stability without the need for additional locking components. The change in resistance when pressing the expansion head and the feeling of locking after locking can be used to intuitively judge whether the installation is in place through the operational feel, reducing the risk of fixation failure due to human error. It is especially suitable for working scenes with dim light underground.

[0009] Furthermore, a positioning groove is provided on the side of the stopper near the mounting block, and a positioning hole is provided on the mounting block, the positioning hole corresponding to the position of the positioning groove. A positioning rod is installed in the positioning hole, and the end of the positioning rod is fixedly connected to the connecting rod. One end of the positioning rod is fixedly connected to the connecting rod, and the other end is inserted into the positioning hole of the mounting block and forms a sliding fit with the positioning groove of the stopper. When the connecting rod is driven by the driving mechanism to strike the mounting block, the positioning rod can slide precisely along the axial direction within the positioning hole, and the positioning groove provides radial movement space for its sliding.

[0010] Furthermore, an installation cavity is provided in the end plate of the closed end of the cylinder, and a limiting groove is provided between the installation cavity and the connecting hole. The limiting groove is provided in a ring shape, and the limiting groove is respectively connected to the connecting hole and the installation cavity. The driving mechanism is located in the installation cavity, and the driving mechanism includes a limiting ring. The limiting ring is located in the limiting groove. A protrusion is fixed on the side of the limiting ring close to the connecting rod, and the outer side of the protrusion abuts against the end of the connecting rod. An inner gear ring is fixed on the inner wall of the limiting ring, and a first gear is provided on the inner side of the inner gear ring. The first gear is rotatably connected to the closed end of the cylinder, and the first gear is coaxially arranged with the cylinder. A second gear is provided between the first gear and the inner gear ring, and the second gear is rotatably connected to the closed end of the cylinder, and the second gear is respectively meshed with the first gear and the inner gear ring. Driven by an external power source, the first gear rotates around the cylinder's axis. The first gear meshes with the second gear, which in turn meshes with the inner ring gear, causing it to rotate synchronously with the retaining ring. The bump on the retaining ring periodically abuts the end of the connecting rod as it moves in a circular motion, pushing the connecting rod in a reciprocating linear motion along the axis, which in turn strikes the mounting block on the filter, causing the filter to vibrate. Through the constant ratio transmission between the first, second, and inner ring gears, the rotation frequency of the retaining ring can be precisely set, ensuring that the bump pushes the connecting rod against the filter at a stable period. This ensures consistent frequency and amplitude of the dust removal vibration, effectively addressing the adhesion of sticky dust, such as coal tar.

[0011] Furthermore, the end of the connecting rod near the bump is designed as a spherical surface, and the outer surface of the bump where it contacts the connecting rod is designed as a convex arc surface. This curved contact pattern between the spherical surface and the convex arc surface disperses concentrated stress over a larger area, avoiding component wear caused by local overload and extending service life. Curved contact allows the connecting rod to maintain stable contact even at certain angular deviations, automatically compensating for axis deviation caused by assembly errors or vibration, and ensuring transmission reliability. The relative sliding between the curved surfaces creates a smoother motion trajectory, which, when combined with lubricating oil, reduces frictional resistance, improves energy transfer efficiency, and reduces operating losses.

[0012] Furthermore, a storage trough is provided on the outer wall of the cylinder. The storage trough is located above the connecting hole, and the slot of the storage trough is oriented vertically upward. A pouring nozzle is fixed on the outer wall of the cylinder. The position of the pouring nozzle corresponds to that of the storage trough. The pouring nozzle is provided with a pouring port, which is connected to the storage trough. The bottom of the storage trough is provided with a plurality of connecting holes. The lower ends of the connecting holes are all connected to the interior of the cylinder, and the upper ends of the connecting holes are all provided with rounded corners. The vertically upward slot of the storage trough facilitates direct pouring of flocculant to avoid spillage during pouring; the design of the corresponding connection between the pouring nozzle and the storage trough forms a closed addition channel to prevent dust from invading and contaminating the flocculant. The connecting holes at the bottom of the storage trough are rounded to reduce the flow resistance of the flocculant when dripping, allowing the flocculant to drip evenly and stably into the interior of the cylinder, and to avoid the liquid from sticking to the wall or clogging caused by burrs on the hole, ensuring that the flocculant is continuously added according to the set dosage.

[0013] Furthermore, an adjustment chamber is provided within the wall thickness of the cylinder sidewall. The adjustment chamber is located on the side of the material storage trough near the filter screen, and the bottom of the adjustment chamber is connected to the connecting hole. The flocculation mechanism is located within the adjustment chamber and includes a first elastic member and a connecting plate. One side of the first elastic member is fixedly connected to the side of the adjustment chamber near the filter screen, the other side of the first elastic member is fixedly connected to one side of the connecting plate, the bottom of the connecting plate is fixedly connected to a connecting rod, the other side of the connecting plate is fixedly connected to one end of a push rod, and the other end of the push rod is fixedly connected to a baffle, which is located within the material storage trough. The vibration drive of the filter dust removal is used as the power source. When the protrusion pushes the connecting rod, the baffle is simultaneously driven to open, so that the flocculant dripping and the dust vibration process occur simultaneously. The flocculant can be immediately mixed with the dust adsorbed by the water mist, thereby improving the flocculation effect. The first elastic member absorbs impact energy during the opening and closing of the baffle, avoiding component wear caused by rigid collisions. At the same time, it ensures the sealing of the baffle when it is closed through elastic reset, preventing flocculant leakage.

[0014] Furthermore, the baffle includes a horizontal plate and a vertical plate, the vertical plate being positioned above the horizontal plate, the bottom of the vertical plate being fixedly connected to the top surface of the horizontal plate, the outer side surface of the vertical plate being fixedly connected to the push rod, the bottom surface of the horizontal plate being slidably engaged with the bottom of the material storage trough, and a mounting hole being provided on the horizontal plate. A second elastic member, a push plate, and a blocking block are arranged in sequence along the vertical direction within the mounting hole. The top of the second elastic member is fixedly connected to the inner wall of the mounting hole, the bottom of the second elastic member is fixedly connected to the top surface of the push plate, the bottom surface of the push plate is fixedly connected to the top of the blocking block, and the bottom of the blocking block is slidably engaged with the bottom of the material storage trough. When the mounting hole is aligned with the connecting hole, the second elastic member precisely pushes the blocking block into the connecting hole via the push plate, forming a tight seal using elastic preload force to prevent leakage of the flocculant in a non-drip state. When the baffle moves, the rounded corners at the upper end of the connecting hole provide a smooth guide for the blocking block, causing it to slide along the curved surface and away from the orifice. During this process, the push plate compresses the second elastic member to store potential energy, thereby avoiding component wear caused by rigid friction and providing reset power for the next seal. This structure can compensate for component wear caused by long-term use through the adaptive adjustment ability of the elastic parts, ensuring the durability of the sealing performance; the sliding fit design between the horizontal plate and the bottom of the storage trough, combined with the reciprocating motion of the blocking block, can synchronously scrape off the flocculant crystals or dust particles deposited on the bottom of the trough, realizing the self-cleaning function and avoiding blockage of the connecting holes or deviation of the dripping amount due to the accumulation of impurities.

[0015] Furthermore, a support frame is fixed to the bottom of the cylinder, and a recovery bucket is fixed inside the support frame. The recovery bucket is located below the cylinder, and the top of the recovery bucket is connected to the interior of the cylinder. The bottom of the cylinder and the top of the recovery bucket are directly connected, and the flocculated waste liquid can automatically flow into the recovery bucket by gravity, eliminating the energy consumption and maintenance costs of additional pumping equipment. The support frame fixes the recovery bucket below the cylinder, forming a compact integrated structure, reducing the equipment's footprint and adapting to space-constrained scenarios such as underground tunnels.

[0016] A method for using a wet dust removal device for use in underground coal mines, which is applied to the wet dust removal device for use in underground coal mines, comprises the following steps: Step 1: Remove the block, install the filter in the mounting ring, snap the mounting block into the mounting groove, and then fix the block in the mounting groove; Step 2: Start the exhaust mechanism and the spray mechanism. The exhaust mechanism draws air from the filter into the cylinder, and the spray mechanism sprays water mist into the cylinder. Step three: start the driving mechanism and the flocculation mechanism. The driving mechanism controls the connecting rod to periodically hit the mounting block, and the flocculation mechanism periodically drips flocculant into the cylinder.

[0017] It can be seen from the above technical solutions that the advantages of the present invention are: in this technical solution, a filter is arranged inside the mounting ring. A mounting block is fixed on the outer side of the filter, and the mounting block can be snapped into the mounting groove of the cylinder and fixed by a block. The exhaust mechanism draws air from the outside of the filter into the inside of the cylinder. The spray mechanism sprays water mist into the cylinder, and the water mist absorbs dust to form waste liquid, and the waste liquid falls to the bottom of the cylinder. The flocculation mechanism periodically drips flocculant into the waste liquid to flocculate the impurities contained in the waste liquid for subsequent treatment. During the process of the filter filtering the air, the driving mechanism controls the connecting rod to periodically hit the mounting block on the filter, causing the filter to vibrate periodically, thereby effectively shaking off the dust adhered to the mesh of the filter. In summary, the device is based on an automatic cleaning method based on periodic vibration, which avoids the problem of dust debris clogging the filter during mechanical squeezing and cleaning with traditional brush plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention; Figure 2 A schematic top view of a specific embodiment of the present invention; Figure 3 for Figure 2 A partial enlarged view of point E in the middle; Figure 4 for Figure 2 Middle AA cross-sectional view; Figure 5 for Figure 4 A partial enlarged view of the middle part; Figure 6 for Figure 4A partial enlarged view of point B in the middle; Figure 7 for Figure 4 A partial enlarged view of point C in the middle; Figure 8 for Figure 2 Schematic diagram of the BB cutaway; Figure 9 for Figure 8 A partial enlarged view of point D in the middle; Figure 10 It is a structural schematic diagram of the flocculation mechanism in a specific embodiment of the present invention; Figure 11 for Figure 10 Schematic diagram of CC cross-section.

[0020] In the figure: 1, cylinder; 2, mounting ring; 3, filter screen; 4, mounting block; 5, stopper; 6, positioning groove; 7, positioning rod; 8, connecting rod; 9, storage trough; 10, connecting hole; 11, connecting shaft; 12, adjustment chamber; 13, first elastic member; 14, connecting piece; 15, push rod; 16, baffle; 17, first gear; 18, second gear; 19, inner gear ring; 20, limiting ring; 21, protrusion; 22, limiting groove; 23, mounting hole; 24 , second elastic member; 25, push piece; 26, blocking block; 27, expansion head; 28, spherical surface; 29, mounting groove; 30, connecting hole; 31, air outlet; 32, fixing groove; 33, guide hole; 34, locking hole; 35, fixing block; 36, guide rod; 37, recovery barrel; 38, positioning hole; 39, mounting cavity; 40, convex arc surface; 41, filling nozzle; 42, filling port; 43, horizontal plate; 44, vertical plate; 45, support frame. DETAILED DESCRIPTION

[0021] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0022] Example 1: A wet dust removal device for underground coal mines, such as Figure 1 、 2As shown, the apparatus comprises a cylinder 1, one end of which is closed and the other is open. A mounting ring 2 is fixed to the open end of the cylinder 1, and a filter screen 3 is mounted inside the mounting ring 2. A connecting hole 30 is provided within the wall thickness of the cylinder 1, and a connecting rod 8 is mounted within the connecting hole 30. A driving mechanism is provided within the cylinder 1, which can control the connecting rod 8 to periodically impact the filter screen 3, causing the filter screen 3 to vibrate periodically. The cylinder 1 also includes an exhaust mechanism and a spray mechanism. The exhaust mechanism can draw air through the filter screen 3 into the cylinder 1 for preliminary filtration. The spray mechanism can spray water mist into the cylinder 1, which absorbs dust in the air and forms waste liquid that falls to the bottom of the cylinder 1. A flocculation mechanism is provided at the top of the cylinder 1, which can periodically drip flocculant into the cylinder 1 to flocculate impurities in the waste liquid for subsequent treatment. Several air outlet holes 31 are provided on the side wall of the cylinder 1 near the closed end.

[0023] like Figure 4 As shown, in this specific embodiment, the cylinder 1 is in the shape of a horizontal cylinder as a whole. The connecting holes 30 in the wall thickness of the side wall of the cylinder 1 are aligned with the axial direction of the cylinder 1, and there are three connecting holes 30 in total. The three connecting holes 30 are evenly distributed at equal angles around the axis of the cylinder 1, and connecting rods 8 are installed in the three connecting holes 30. The mounting ring 2 is located at the open end of the cylinder 1. The mounting ring 2 is arranged in a circular ring shape. One side plane of the mounting ring 2 is welded to the end face of the open end of the cylinder 1. The inner wall diameter of the mounting ring 2 is smaller than the inner wall diameter of the cylinder 1, and the mounting ring 2 is coaxial with the cylinder 1. A guide ring is welded to the outer wall of the mounting ring 2, and the guide ring is trumpet-shaped. A mounting groove 29 is provided on the plane of the mounting ring 2 away from the cylinder 1. There are three mounting grooves 29 in total. The three mounting grooves 29 are evenly distributed at equal angles around the axis of the mounting ring 2, and the three mounting grooves 29 are respectively connected to the three connecting holes 30.

[0024] like Figure 5 As shown, the filter screen 3 is set to a cylindrical shape, and the outer side of the filter screen 3 is welded with a mounting block 4. There are three mounting blocks 4, which are evenly distributed around the axis of the filter screen 3 at equal angles. The three mounting blocks 4 are respectively clamped into three mounting grooves 29. Each of the three mounting grooves 29 is provided with a detachable stopper 5. The top of the stopper 5 is hinged to the outer wall of the mounting ring 2. The stopper 5 can limit the mounting block 4 in the mounting groove 29. Figure 3As shown, both sides of the mounting groove 29 are connected with fixing grooves 32, and the fixing grooves 32 are arranged on the plane of the mounting ring 2 away from the cylinder 1. A guide hole 33 is provided at the bottom of the fixing groove 32, and a locking hole 34 is provided at the bottom of the guide hole 33. The diameter of the locking hole 34 is larger than the diameter of the guide hole 33. Fixing blocks 35 are welded on both sides of the stopper 5, and the fixing blocks 35 on both sides of the stopper 5 can be respectively snapped into the corresponding fixing grooves 32. A guide rod 36 is welded to the side of the fixing block 35 close to the guide hole 33. The diameter of the guide rod 36 is the same as the inner diameter of the guide hole 33. The end of the guide rod 36 is snap-fitted with an expansion head 27. The expansion head 27 is made of rubber and can be interference fit with the locking hole 34.

[0025] Each stopper 5 is provided with a positioning groove 6 on the side adjacent to the mounting block 4. Each mounting block 4 is provided with a positioning hole 38. The length direction of the positioning hole 38 is the same as the axial direction of the cylinder 1, and the positioning hole 38 corresponds to the position of the corresponding positioning groove 6. A positioning rod 7 is installed in each positioning hole 38. The positioning rod 7 can slide along the corresponding positioning hole 38, and the end of the positioning rod 7 is welded to the corresponding connecting rod 8.

[0026] like Figure 7 As shown, in this specific embodiment, a mounting cavity 39 is provided within the end plate at the closed end of the cylinder 1. The mounting cavity 39 is a cylindrical cavity, and the centerline of the mounting cavity 39 coincides with the axis of the cylinder 1. A limiting groove 22 is provided between the mounting cavity 39 and the connecting hole 30. The limiting groove 22 is annular, and the centerline of the limiting groove 22 coincides with the axis of the cylinder 1. One side of the limiting groove 22 communicates with the three connecting holes 30, and the other side of the limiting groove 22 communicates with the mounting cavity 39. The driving mechanism is located in the installation cavity 39, and the driving mechanism includes a limit ring 20. The limit ring 20 is located in the limit groove 22. The limit ring 20 can rotate along the axis of the cylinder 1 in the limit groove 22. The limit ring 20 is welded with a protrusion 21 on the side close to the connecting rod 8. The protrusion 21 is located in the limit groove 22, and there are three protrusions 21. The three protrusions 21 are evenly distributed at equal angles around the axis of the limit ring 20, and the outer side surfaces of the three protrusions 21 can respectively abut against the ends of the corresponding connecting rods 8, and the outer side surface of the protrusion 21 in contact with the connecting rod 8 is set as a convex arc surface 40, and the end of the connecting rod 8 close to the protrusion 21 is set as a spherical surface 28.

[0027] like Figure 8 As shown, an inner gear ring 19 is welded to the inner wall of the limiting ring 20. A first gear 17 is provided on the inner side of the inner gear ring 19. The first gear 17 is rotatably connected to the closed end of the cylinder 1 via a bearing, and the first gear 17 is coaxially arranged with the cylinder 1. A second gear 18 is provided between the first gear 17 and the inner gear ring 19. The second gear 18 is rotatably connected to the closed end of the cylinder 1 via a bearing, and the second gear 18 meshes with the first gear 17 and the inner gear ring 19 respectively.

[0028] like Figure 9 As shown, in this specific embodiment, a material storage tank 9 is provided on the outer wall of the cylinder 1. The material storage tank 9 is located above the connecting hole 30, and the slot of the material storage tank 9 is oriented vertically upward. A pouring nozzle 41 is welded to the outer wall of the cylinder 1. The pouring nozzle 41 corresponds to the position of the material storage tank 9. The pouring nozzle 41 is provided with a pouring port 42, which is connected to the material storage tank 9. The bottom of the material storage tank 9 is provided with a plurality of connecting holes 10. The lower ends of the connecting holes 10 are connected to the interior of the cylinder 1, and the upper ends of the connecting holes 10 are provided with rounded corners.

[0029] like Figure 6 As shown, an adjustment chamber 12 is provided in the wall thickness of the side wall of the cylinder 1. The adjustment chamber 12 is located on the side of the material storage trough 9 close to the filter screen 3. The adjustment chamber 12 is not connected to the material storage trough 9, and the bottom of the adjustment chamber 12 is connected to the connecting hole 30. The flocculation mechanism is located in the adjustment chamber 12 and includes a first elastic member 13 and a connecting piece 14. One side of the first elastic member 13 is fixedly connected to the side of the adjustment chamber 12 close to the filter screen 3 by bolts, and the other side of the first elastic member 13 is fixedly connected to one side of the connecting piece 14 by bolts. The bottom of the connecting piece 14 is welded to the connecting rod 8, and the other side of the connecting piece 14 is welded to one end of the push rod 15. The other end of the push rod 15 passes through the material storage trough 9 and is welded to the baffle 16. The baffle 16 is located in the material storage trough 9.

[0030] like Figure 10 、 11 As shown, the baffle 16 includes a horizontal plate 43 and a vertical plate 44. The vertical plate 44 is located above the horizontal plate 43. The bottom of the vertical plate 44 is welded to the top of the horizontal plate 43. The outer side of the vertical plate 44 is welded to the end of the push rod 15. The bottom of the horizontal plate 43 slides in contact with the bottom of the material storage trough 9. The horizontal plate 43 is provided with mounting holes 23. The number and position of the mounting holes 23 correspond to the connecting holes 10. The mounting holes 23 are sequentially provided with a second elastic member 24, a push piece 25, and a blocking block 26 in the vertical direction. The top of the second elastic member 24 is fixedly connected to the inner wall of the mounting hole 23 by bolts. The bottom of the second elastic member 24 is fixedly connected to the top of the push piece 25 by bolts. The bottom of the push piece 25 is fixedly connected to the top of the blocking block 26 by bolts. The bottom of the blocking block 26 slides in contact with the bottom of the material storage trough 9.

[0031] In this specific embodiment, the exhaust mechanism includes a connecting shaft 11, which is located inside the cylinder 1 and is coaxially arranged with the cylinder 1. A fan is installed at the end of the connecting shaft 11 close to the filter 3, and the end of the connecting shaft 11 away from the filter 3 passes through the closed end of the cylinder 1 and is fixedly connected to the output shaft of the motor. The connecting shaft 11 also passes through the first gear 17 and is connected to the first gear 17 through a transmission key. Four support rods are also provided inside the cylinder 1. One end of the support rod is welded to the outer cylindrical surface of the connecting shaft 11, and the other end of the support rod is welded to the cylinder 1. The support rods are evenly distributed at equal angles around the axis of the connecting shaft 11 and are arranged in a cross shape. The spray mechanism is installed on the inner wall of the cylinder 1. The spray mechanism includes a plurality of nozzles that can continuously spray water mist into the interior of the cylinder 1. The spray mechanism is an existing device and is not drawn in the accompanying drawings.

[0032] A support frame 45 is provided below the cylinder 1, and the support frame 45 is welded to the outer wall of the cylinder 1. A recovery barrel 37 is fixed inside the support frame 45 by bolts. The recovery barrel 37 is located below the cylinder 1, and the top of the recovery barrel 37 is connected to the interior of the cylinder 1.

[0033] Example 2: Based on the wet dust removal device for underground coal mines provided in Example 1, this example further provides a method for using the wet dust removal device for underground coal mines, comprising the following steps: Step 1: First, remove the stopper 5 and flip the top of the stopper 5 around the hinge point, disengaging the two side fixing blocks 35 from the fixing slots 32 of the mounting ring 2. The guide rods 36 then drive the expansion head 27 out of the locking hole 34. Next, push the cylindrical filter 3 along the outside of the mounting ring 2, allowing the three mounting blocks 4 on the outside of the filter 3 to engage the three mounting slots 29 of the mounting ring 2. Simultaneously, insert the positioning rods 7 into the positioning holes 38 of the mounting blocks 4 to complete the initial positioning. Next, flip the stopper 5 back into the mounting slots 29, inserting the fixing blocks 35 into the fixing slots 32 and aligning the guide rods 36 with the guide holes 33. Press the stopper 5 firmly, compressing the rubber expansion head 27 through the guide holes 33 and into the larger locking hole 34. The expansion head 27's elasticity allows it to return to its original shape within the locking hole 34, creating an interference fit with the wall of the hole, firmly locking the fixing block 35 into the fixing slot 32. The stopper 5 limits the movement of the mounting block 4, effectively securing the filter 3.

[0034] Step 2: Start the motor connected to the connecting shaft 11. The connecting shaft 11 drives the front fan to rotate at high speed to generate suction. The external dust-containing air is gathered through the trumpet-shaped guide ring on the outside of the mounting ring 2 and is sucked into the cylinder 1 through the filter 3. The large dust particles in the air are intercepted by the filter 3. The air after preliminary filtration flows toward the closed end of the cylinder 1 and is finally discharged from the air outlet 31 of the cylinder 1. At the same time, the spray mechanism inside the cylinder 1 is started. The spray mechanism is an existing device and is not drawn in the accompanying drawings. The nozzle of the spray mechanism continuously sprays water mist into the cylinder 1. The water mist combines with the fine dust remaining in the air to form liquid waste, which falls to the bottom of the cylinder 1 under the action of gravity and flows into the recovery bucket 37 below through the inner bottom channel for collection. The connecting shaft 11 is fixed by support rods arranged in a cross shape to ensure stability during rotation.

[0035] Step three, when the connecting shaft 11 rotates, the first gear 17 is driven to rotate synchronously through the transmission key, and the first gear 17 is externally meshed with the second gear 18 to drive the second gear 18 to rotate, thereby driving the inner gear ring 19 fixed with the limit ring 20 to rotate coaxially, and the three protrusions 21 on the limit ring 20 move in a circular motion in the limit groove 22 with the ring body. When the convex arc surface 40 of the protrusion 21 contacts the spherical surface 28 end of the connecting rod 8, the connecting rod 8 is pushed to move along the connecting hole 30 toward the filter 3, hitting the filter 3 mounting block 4 to cause the filter 3 to vibrate, and shake off the dust adhering to the mesh. The vibration energy is transmitted through the positioning rod 7 to ensure that the vibration direction is perpendicular to the plane of the filter 3.

[0036] When the connecting rod 8 moves, the connecting piece 14 compresses the first elastic member 13 in the adjustment chamber 12. The connecting piece 14 pulls the baffle 16 through the push rod 15 to slide within the storage tank 9. At this time, the blocking block 26 on the horizontal plate 43 of the baffle 16 slides out of the connecting hole 10 and retracts into the mounting hole 23. The push piece 25 compresses the second elastic member 24. The flocculant in the storage tank 9 drips into the cylinder 1 after the rounded corner design at the upper end of the connecting hole 10 reduces resistance. It mixes with the waste liquid, causing fine particles to agglomerate into large flocs and accelerate sedimentation. When the protrusion 21 separates from the connecting rod 8, the first elastic member 13 releases its elastic force and pushes the connecting rod 8 back to its original position, driving the connecting piece 14, push rod 15 and baffle 16 to move in the opposite direction. The blocking block 26 returns to the top of the connecting hole 10 with the baffle 16. The second elastic member 24 resets and pushes the blocking block 26 into the connecting hole 10 to seal the channel and stop the flocculant dripping. As the protrusion 21 rotates periodically, the dust removal and flocculation actions are cyclically carried out, realizing the automated coordinated control of the dust removal process.

[0037] It can be seen from the above embodiments that the beneficial effect of the present invention is that, in this specific embodiment, a filter screen is arranged inside the mounting ring. A mounting block is fixed on the outer side of the filter screen, and the mounting block can be snapped into the mounting groove of the cylinder and fixed by a block. The exhaust mechanism draws air from the outside of the filter screen into the inside of the cylinder. The spray mechanism sprays water mist into the cylinder, and the water mist absorbs dust to form waste liquid, and the waste liquid falls to the bottom of the cylinder. The flocculation mechanism periodically drips flocculant into the waste liquid to flocculate the impurities contained in the waste liquid for subsequent treatment. During the process of the filter screen filtering the air, the driving mechanism controls the connecting rod to periodically hit the mounting block on the filter screen, causing the filter screen to vibrate periodically, thereby effectively shaking off the dust adhered to the mesh of the filter screen. In summary, the device is based on an automatic cleaning method based on periodic vibration, which avoids the problem of dust debris clogging the filter screen during mechanical squeezing and cleaning by traditional brush plates.

[0038] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wet dust removal device for underground coal mines, comprising a cylinder (1), characterized in that: One end of the cylinder (1) is a closed end, and the other end is an open end. A mounting ring (2) is fixed to the open end of the cylinder (1). A mounting groove (29) is provided on the plane of the mounting ring (2) away from the cylinder (1). A filter screen (3) is provided inside the mounting ring (2). A mounting block (4) is fixed on the outer side of the filter screen (3). The mounting block (4) is clamped in the mounting groove (29). A detachable stopper (5) is provided in the mounting groove (29). The stopper (5) can limit the mounting block (4) in the mounting groove (29). A connecting hole (30) is provided in the wall thickness of the side wall of the cylinder (1). The connecting hole (30) is connected to the mounting hole (30). The groove (29) is connected, and a connecting rod (8) is installed in the connecting hole (30). A driving mechanism is provided inside the cylinder (1), and the driving mechanism can control the connecting rod (8) to periodically hit the mounting block (4). An exhaust mechanism and a spray mechanism are also provided inside the cylinder (1). The exhaust mechanism can suck air from the filter (3) into the interior of the cylinder (1), and the spray mechanism can spray water mist into the interior of the cylinder (1). A flocculation mechanism is provided on the top of the cylinder (1), and the flocculation mechanism can periodically drip flocculant into the interior of the cylinder (1). A plurality of air outlet holes (31) are provided on the side wall of the cylinder (1) near the closed end.

2. The wet dust removal device for underground coal mines according to claim 1, characterized in that: A fixing groove (32) is further provided on the plane of the mounting ring (2) away from the cylinder (1). The fixing groove (32) is located outside the mounting groove (29) and is communicated with the mounting groove (29). A guide hole (33) is provided at the bottom of the fixing groove (32). A locking hole (34) is provided at the bottom of the guide hole (33). The diameter of the locking hole (34) is larger than the diameter of the guide hole (33). The top of the stopper (5) is hinged to the outer wall of the mounting ring (2). A fixing block (35) is fixed to the outside of the stopper (5). The fixing block (35) is located in the fixing groove (32). A guide rod (36) is fixed to the side of the fixing block (35) close to the guide hole (33). The diameter of the guide rod (36) is the same as the inner diameter of the guide hole (33). An expansion head (27) is fixed to the end of the guide rod (36). The expansion head (27) can be interference-fitted with the locking hole (34).

3. The wet dust removal device for underground coal mines according to claim 2, characterized in that: A positioning groove (6) is provided on the side of the stopper (5) close to the mounting block (4), and a positioning hole (38) is provided on the mounting block (4). The positioning hole (38) corresponds to the position of the positioning groove (6). A positioning rod (7) is installed in the positioning hole (38), and the end of the positioning rod (7) is fixedly connected to the connecting rod (8).

4. The wet dust removal device for underground coal mines according to claim 1, characterized in that: An installation cavity (39) is provided in the end plate at the closed end of the cylinder (1), and a limiting groove (22) is provided between the installation cavity (39) and the connecting hole (30). The limiting groove (22) is provided in an annular shape, and the limiting groove (22) is communicated with the connecting hole (30) and the installation cavity (39) respectively. The driving mechanism is located in the installation cavity (39), and the driving mechanism includes a limiting ring (20). The limiting ring (20) is located in the limiting groove (22). A protrusion (21) is fixed on the side of the limiting ring (20) close to the connecting rod (8), and the outer side of the protrusion (21) is connected to the connecting rod (8). The end of the connecting rod (8) is abutted, and an inner toothed ring (19) is fixed to the inner wall of the limiting ring (20). A first gear (17) is provided on the inner side of the inner toothed ring (19). The first gear (17) is rotatably connected to the closed end of the cylinder (1), and the first gear (17) and the cylinder (1) are coaxially arranged. A second gear (18) is provided between the first gear (17) and the inner toothed ring (19). The second gear (18) is rotatably connected to the closed end of the cylinder (1), and the second gear (18) is meshed with the first gear (17) and the inner toothed ring (19) respectively.

5. The wet dust removal device for underground coal mines according to claim 4, characterized in that: The end of the connecting rod (8) close to the protrusion (21) is set as a spherical surface (28), and the outer side surface of the protrusion (21) in contact with the connecting rod (8) is set as a convex arc surface (40).

6. The wet dust removal device for underground coal mines according to claim 1, characterized in that: A material storage trough (9) is provided on the outer wall of the cylinder (1), the material storage trough (9) is located above the connecting hole (30), and the slot direction of the material storage trough (9) is vertically upward. A pouring nozzle (41) is fixed on the outer wall of the cylinder (1), the pouring nozzle (41) corresponds to the position of the material storage trough (9), and a pouring port (42) is provided on the pouring nozzle (41), and the pouring port (42) is connected to the material storage trough (9). A plurality of communicating holes (10) are provided at the bottom of the material storage trough (9), the lower ends of the plurality of communicating holes (10) are all connected to the interior of the cylinder (1), and the upper ends of the plurality of communicating holes (10) are all provided with rounded corners.

7. The wet dust removal device for underground coal mines according to claim 6, characterized in that: An adjustment chamber (12) is provided in the wall thickness of the side wall of the cylinder (1), the adjustment chamber (12) is located on a side of the storage tank (9) close to the filter screen (3), and the bottom of the adjustment chamber (12) is communicated with the connecting hole (30), and the flocculation mechanism is located in the adjustment chamber (12), and the flocculation mechanism includes a first elastic member (13) and a connecting piece (14), one side of the first elastic member (13) is fixedly connected to the side of the adjustment chamber (12) close to the filter screen (3), the other side of the first elastic member (13) is fixedly connected to one side of the connecting piece (14), the bottom of the connecting piece (14) is fixedly connected to the connecting rod (8), the other side of the connecting piece (14) is fixedly connected to one end of the push rod (15), the other end of the push rod (15) is fixedly connected to the baffle (16), and the baffle (16) is located in the storage tank (9).

8. The wet dust removal device for underground coal mines according to claim 7, characterized in that: The baffle (16) includes a horizontal plate (43) and a vertical plate (44), the vertical plate (44) is located above the horizontal plate (43), the bottom of the vertical plate (44) is fixedly connected to the top surface of the horizontal plate (43), the outer side surface of the vertical plate (44) is fixedly connected to the push rod (15), the bottom surface of the horizontal plate (43) is slidably fitted with the bottom of the storage trough (9), a mounting hole (23) is provided on the horizontal plate (43), and a second elastic member (24), a push piece (25) and a blocking block (26) are sequentially provided in the mounting hole (23) along the vertical direction, the top of the second elastic member (24) is fixedly connected to the inner wall of the mounting hole (23), the bottom of the second elastic member (24) is fixedly connected to the top surface of the push piece (25), the bottom surface of the push piece (25) is fixedly connected to the top of the blocking block (26), and the bottom of the blocking block (26) is slidably fitted with the bottom of the storage trough (9).

9. The wet dust removal device for underground coal mines according to claim 1, characterized in that: A support frame (45) is fixed to the bottom of the cylinder (1), a recovery barrel (37) is fixed inside the support frame (45), the recovery barrel (37) is located below the cylinder (1), and the top of the recovery barrel (37) is communicated with the interior of the cylinder (1).

10. A method for using a wet dust removal device for underground coal mines, characterized in that: The wet dust removal device for use in underground coal mines as claimed in any one of claims 1 to 9 comprises the following steps: Step 1: Remove the stopper (5), install the filter (3) in the mounting ring (2), and snap the mounting block (4) into the mounting groove (29), and then fix the stopper (5) in the mounting groove (29); Step 2: Start the exhaust mechanism and the spray mechanism, the exhaust mechanism sucks air from the filter (3) into the interior of the cylinder (1), and the spray mechanism sprays water mist into the interior of the cylinder (1); Step three: start the driving mechanism and the flocculation mechanism, the driving mechanism controls the connecting rod (8) to periodically hit the mounting block (4), and the flocculation mechanism periodically drips flocculant into the interior of the cylinder (1).

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