Filtering structure for coal mine ventilation

Abstract

The invention relates to a filtering structure for coal mine ventilation, and relates to the field of coal mine ventilation equipment, the filtering structure comprises a ventilation pipe and a filtering assembly, the ventilation pipe is arranged in parallel to a first direction; the filtering assembly comprises a filtering pore plate, an included angle is formed between the plate surface of the filtering pore plate and the first direction, and the included angle is not equal to 90 degrees; the filtering pore plate is connected to the ventilation pipe in a sliding mode in the first direction, a driving assembly is connected between the ventilation pipe and the filtering pore plate, and the driving assembly is used for driving the filtering pore plate to move in the first direction. The filtering device has the effects of preventing the filtering pore plate from being blocked and improving the filtering efficiency.

Description

Technical Field

[0001] The present application relates to the field of coal mine ventilation equipment, and in particular to a filter structure for coal mine ventilation. Background Art

[0002] Coal mine ventilation systems play a vital role in modern mine safety and efficient production. As a crucial component of mine safety systems, ventilation systems must not only ensure underground air quality but also effectively filter out harmful substances such as dust and particulate matter to protect worker health and equipment operation.

[0003] In order to solve the above problems, a method commonly adopted in the industry is to set a fixed filter screen or filter plate in the ventilation duct to remove solid particles entering the ventilation duct.

[0004] Although the above-mentioned existing technical means can achieve the filtering function to a certain extent, when dealing with high-concentration dust environments, the fixed filtering device is prone to clogging due to the accumulation of particulate matter, resulting in a significant decrease in filtration efficiency; therefore, how to design a filtration structure for coal mine ventilation that can prevent clogging and improve filtration efficiency has become a technical problem that needs to be solved urgently. Summary of the Invention

[0005] In order to prevent blockage and improve filtration efficiency, the present application provides a filtration structure for coal mine ventilation.

[0006] The present application provides a filter structure for coal mine ventilation using the following technical solutions: A filter structure for coal mine ventilation, comprising: a ventilation pipe, the ventilation pipe being arranged parallel to the first direction; and A filter assembly, comprising: A filter plate, wherein the plate surface of the filter plate forms an angle with the first direction, and the angle is not equal to 90°; The filter plate is slidably connected to the ventilation pipe along a first direction. A driving component is connected between the ventilation pipe and the filter plate. The driving component is used to drive the filter plate to move along the first direction.

[0007] By adopting this technical solution, the inclined filter plate can increase the filtration area and improve the filtration effect. The filter plate is connected to the ventilation pipe in a sliding direction and is driven by the drive assembly to further disturb the airflow and enhance the contact between solid particles and the filter plate, thereby improving the thoroughness of the filtration. During the movement of the filter plate, some solid particles will fall off, preventing the filter plate from clogging and improving the filtration effect.

[0008] Optionally, the filter assembly includes two filter holes, one of which is a first filter hole plate, and the other is a second filter hole plate, and the first filter hole plate and the second filter hole plate are spaced apart in the first direction.

[0009] By adopting the above technical solution, two filter plates are arranged spaced apart in the first direction, which can divide the ventilation duct into multiple interconnected sections. In this structure, the airflow will follow a tortuous path when passing through the filter assembly, thereby extending the airflow's travel time within the ventilation duct, giving solid particles in the airflow more opportunities to contact the filter plates, thereby improving the filtration effect.

[0010] Optionally, a plurality of the filter components are spaced apart and distributed along the first direction in the ventilation duct.

[0011] By adopting the above technical solution, multiple filter components are distributed in the ventilation duct at intervals along the first direction, and multiple filter plates can filter solid particles, reducing the possibility of solid particles escaping and improving the overall filtration efficiency and filtration quality.

[0012] Optionally, the driving component includes: A bidirectional screw, the bidirectional screw being parallel to the first direction; a plurality of bidirectional screws being sequentially distributed along the first direction, with two adjacent bidirectional screws being coaxially fixedly connected; each of the filter components being correspondingly connected to one of the bidirectional screws; and, A movable seat, the movable seat being slidably connected to the ventilation pipe along a first direction, and each of the two threaded sections of the bidirectional screw being threadedly connected to one of the movable seats; The two filter plates in the filter assembly are respectively connected to one of the movable seats.

[0013] By adopting the above technical solution, multiple bidirectional screws are distributed in sequence along a first direction and coaxially fixedly connected, forming an integrated drive structure, ensuring transmission stability and synchronization. Each filter assembly is connected to the bidirectional screw via a movable seat, and the two threaded segments of the bidirectional screw are respectively threadedly connected to two movable seats, so that the two filter plates can be connected to these two movable seats respectively. When the bidirectional screw rotates, the two movable seats will move in opposite directions, thereby driving the two filter plates to move toward or away from each other along the first direction. This design not only achieves dynamic adjustment of the spacing between the filter plates, but also enhances the disturbance effect on the airflow, thereby improving filtration efficiency.

[0014] Optionally, a groove is formed on the wall of the ventilation pipe, the bidirectional screw is located in the groove, and the bidirectional screw is located on the side of the filter plate.

[0015] By adopting the above technical solution, the groove setting provides installation space for the bidirectional screw, so that the bidirectional screw can be hidden in the wall of the ventilation pipe. At the same time, the bidirectional screw is set on the side of the filter plate, which optimizes the structural layout.

[0016] Optionally, the end of the filter plate connected to the movable seat is the connecting end, and the end facing away from the connecting end is the free end; The first filter plate and the second filter plate are symmetrical about a reference plane, the reference plane is a virtual plane located between the first filter plate and the second filter plate in the first direction, and the reference plane is arranged perpendicular to the first direction; The distance between the two filter plates in the filter assembly along the first direction gradually decreases from the connecting end to the free end.

[0017] By adopting this technical solution, the first and second filter plates are arranged symmetrically about the reference plane, and the spacing between the two filter plates along the first direction gradually decreases from the connecting end to the free end. This can guide the airflow into a more complex curved trajectory within the ventilation duct, increasing the contact area and time between the airflow and the filter plates, thereby significantly improving the filtration effect. This structural design also helps optimize airflow distribution, reduces the possibility of direct airflow penetration, and further enhances the interception capability of solid particles.

[0018] Optionally, a connecting assembly is further included, through which the filter plates are connected to the movable base respectively; the connecting assembly includes: A rotating shaft, wherein the filter plate is rotatably connected to the movable base via the rotating shaft; and A torsion spring is connected between the movable seat and the filter plate, and when the torsion spring is in a deformed posture in which the deformation can be restored, the torsion spring has a force that drives the filter plate to rotate toward the reference surface.

[0019] By adopting the above technical solution, the filter plate can rotate relative to the movable seat through the rotating shaft. At the same time, the setting of the torsion spring enables the filter plate to swing when subjected to external force and return to its initial position after the external force disappears, which can make the filter plate shake. This structural design can effectively reduce the adhesion of solid particles on the filter plate, avoid the filter plate from being blocked due to particle accumulation, and thus improve the filtering effect and ventilation efficiency.

[0020] Optionally, the connection component further includes: a compression spring, wherein the expansion and contraction direction of the compression spring is parallel to the first direction, and one end of the compression spring is fixedly connected to the movable seat, and the other end of the compression spring is capable of contacting the filter plate; In the first direction, the compression spring is located on a side of the filter plate away from the reference surface.

[0021] By adopting the above technical solution, the compression spring can exert a force on the filter plate toward the reference surface. Combined with the elastic force of the torsion spring, this causes the filter plate to vibrate during movement. This shaking helps to shake off solid particles adhering to the filter plate, reducing particle adhesion and thus preventing clogging of the filter plate due to particle accumulation.

[0022] Optionally, the filter plate is a corrugated plate.

[0023] By adopting the above technical solution, the wavy filter plate can further increase the filtration area, so that solid particles in the airflow have more opportunities to contact the filter plate, thereby improving the filtration effect.

[0024] Optionally, a plurality of nozzles are provided in the ventilation pipe, and the nozzles and the bidirectional screw are located on the same side of the ventilation pipe.

[0025] By adopting the above technical solution, after the filter plate filters the solid particles in the air flow, water is further sprayed to flush the residual particles on the filter plate, thereby enhancing the cleaning effect of the filter structure and reducing the adhesion of solid particles on the filter plate.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The filter plate is tilted and movable in a first direction, which increases the filtration area and bends the airflow trajectory, prolonging the airflow movement time in the ventilation duct, thereby significantly improving the filtration effect of solid particles; 2. The two filter plates are driven by a bidirectional screw to move relative to each other, and the torsion spring and compression spring work together to make the filter plates shake, effectively reducing the adhesion of solid particles on the filter plates and avoiding clogging problems. 3. Set up multiple nozzles to flush the filter plate and collect sewage through the drainage holes, which further reduces the residual solid particles and ensures the long-term and efficient operation of the filter device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 This is a schematic diagram of the structure of the filter assembly in the embodiment of the present application; Figure 3 This is a schematic diagram of the structure of the drive assembly in an embodiment of the present application; Figure 4 yes Figure 2 Enlarged view of part A; Figure 5 This is a schematic structural diagram of the filter plate in an embodiment of the present application; Figure 6 yes Figure 5 Enlarged view of part B; Figure 7 It is a structural diagram of the nozzle and water stopper in the embodiment of the present application.

[0028] Explanation of the accompanying drawings: 1. Ventilation pipe; 11. Groove; 12. First connecting seat; 13. Drain hole; 2. Filter assembly; 21. Filter hole plate; 21a. First filter hole plate; 21b. Second filter hole plate; 211. Connecting end; 212. Free end; 3. Drive assembly; 31. Bidirectional screw; 32. Moving seat; 4. Transmission assembly; 41. First bevel gear; 42. Second bevel gear; 43. Motor; 5. Connecting assembly; 51. Rotating shaft; 52. Torsion spring; 53. Protrusion; 54. Second connecting seat; 55. Compression spring; 6. Nozzle; 7. Water stop plug. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-7 This application is described in further detail.

[0030] The present application discloses a filter structure for coal mine ventilation. Figure 1 and Figure 2 The filter structure for coal mine ventilation includes a ventilation pipe 1 and a filter assembly 2 arranged in the ventilation pipe 1, and the ventilation pipe 1 is arranged parallel to the first direction.

[0031] Reference Figure 2 The filter assembly 2 includes a filter plate 21. The plate surface of the filter plate 21 forms an angle with the first direction, and the angle is not equal to 90 degrees. That is, the filter plate 21 is arranged obliquely in the ventilation pipe 1. Compared with the mode in which the filter plate 21 is arranged perpendicular to the ventilation pipe 1, the inclined filter plate 21 can increase the filtering area and improve the filtering effect. In some embodiments of the present application, the filter plate 21 is a corrugated plate; in other embodiments, the filter plate 21 may also be a flat plate; In some embodiments of the present application, the filter assembly 2 includes two filter plates 21, one of which is a first filter plate 21a, and the other is a second filter plate 21b. The first filter plate 21a and the second filter plate 21b are spaced apart in the first direction. The first filter plate 21a and the second filter plate 21b are symmetrical about a reference plane, which is a virtual plane located between the first filter plate 21a and the second filter plate 21b in the first direction, and the reference plane is arranged perpendicular to the first direction. The filter plate 21 divides the ventilation duct 1 into multiple interconnected sections. However, under the action of the filter plate 21, the airflow will present a tortuous trajectory, thereby increasing the travel time of the airflow in the ventilation duct 1, so that the filter plate 21 can more thoroughly filter solid particles in the airflow. In order to further improve the filtering effect, in some embodiments of the present application, a plurality of filter components 2 are provided, and the plurality of filter components 2 are spaced apart and distributed along the first direction in the ventilation duct 1 .

[0032] Reference Figure 2 、 Figure 3 and Figure 4 In order to further disturb the airflow and make the solid particles contact the filter plate 21 more thoroughly, the filter plate 21 is slidably connected to the ventilation pipe 1 along the first direction. A driving component 3 is connected between the ventilation pipe 1 and the filter plate 21. The driving component 3 is used to drive the filter plate 21 to move along the first direction. The driving component 3 includes a bidirectional screw 31 and a moving seat 32; the bidirectional screw 31 is parallel to the first direction, and a plurality of bidirectional screws 31 are provided. The plurality of bidirectional screws 31 are sequentially distributed along the first direction, and two adjacent bidirectional screws 31 are coaxially fixedly connected; each filter assembly 2 is correspondingly connected to a bidirectional screw 31 through a moving seat 32. Specifically, the two thread segments of each bidirectional screw 31 are correspondingly threadedly connected to a moving seat 32, and the two filter plates 21 in the filter assembly 2 are correspondingly connected to a moving seat 32; The movable seat 32 is connected to the ventilation pipe 1 in a sliding manner along the first direction. Specifically, a groove 11 is formed on the wall of the ventilation pipe 1. The bidirectional screw 31 and the movable seat 32 are both located in the groove 11. The movable seat 32 is adapted to be located in the groove 11 and fits with the inner wall of the groove 11 so that the groove wall of the groove 11 guides the sliding process of the movable seat 32 in the first direction. During operation, the bidirectional screw 31 only needs to be rotated to drive the two movable seats 32 located on the bidirectional screw 31 to move in opposite directions. The filter plate 21 installed on the two movable seats 32 will move along with the movable seat 32 in the first direction. In order to drive the bidirectional screw 31 to rotate along the ventilation pipe 1, a first connecting seat 12 is fixedly connected to the inner wall of the ventilation pipe 1, and multiple bidirectional screws 31 are connected in sequence to form a long rod. One end of the long rod rotates around its own axis and is connected to the first connecting seat 12, and the other end is provided with a transmission assembly 4; the transmission assembly 4 includes a first bevel gear 41, a second bevel gear 42 and a motor 43; the first bevel gear 41 is coaxially fixedly connected to the end of the long rod away from the first connecting seat 12, the second bevel gear 42 is meshed with the first bevel gear 41, the first bevel gear 41 and the second bevel gear 42 are both 45° bevel gears, and the motor 43 is fixed A servo motor 43 is connected to the outer wall of the ventilation pipe 1, and the output shaft of the motor 43 passes through the wall of the ventilation pipe 1 and can rotate along the ventilation pipe 1. The second bevel gear 42 is coaxially fixedly connected to the output shaft of the motor 43; during operation, the motor 43 drives the second bevel gear 42 to rotate, and the second bevel gear 42 drives the first bevel gear 41 meshing with it to rotate, and the multiple bidirectional screws 31 will rotate under the drive of the first bevel gear 41. As the bidirectional screws 31 rotate, the movable seat 32 moves along the first direction under the guidance of the groove wall of the groove 11, so that the filter plate 21 moves along the first direction with the movable seat 32.

[0033] Reference Figure 5 In some embodiments of the present application, the bidirectional screw 31 is located on the side of the filter plate 21, and when the first direction is horizontal, the bidirectional screw 31 is located above the filter plate 21, the filter plate 21 is connected to the movable seat 32, and the end of the filter plate 21 connected to the movable seat 32 is the connecting end 211, and the end facing away from the connecting end 211 is the free end 212; In some embodiments of the present application, the distance between the two filter plates 21 in the filter assembly 2 along the first direction gradually decreases from the connecting end 211 to the free end 212 .

[0034] Reference Figure 5 and Figure 6 In some embodiments of the present application, a connecting assembly 5 is further included, and each filter plate 21 is connected to the movable seat 32 via the connecting assembly 5; the connecting assembly 5 includes a rotating shaft 51 and a torsion spring 52; the filter plate 21 is rotatably connected to the movable seat 32 via the rotating shaft 51, and two protrusions 53 are fixedly connected to the movable seat 32, the rotating shaft 51 is perpendicular to the first direction, and when the first direction is horizontal, the rotating shaft 51 is also horizontally arranged, and each end of the rotating shaft 51 is rotatably connected to a protrusion 53, and the filter plate 21 is fixedly connected to the rotating shaft 51 to realize the movement process of the filter plate 21 rotating along the movable seat 32 via the rotating shaft 51; The torsion spring 52 is connected between the movable seat 32 and the filter hole plate 21. Specifically, the torsion spring 52 is sleeved on the rotating shaft 51, and one end of the torsion spring 52 is fixedly connected to the rotating shaft 51, and the other end is fixedly connected to the protrusion 53; when the torsion spring 52 is in a deformed posture in which the deformation can be restored, the torsion spring 52 has a force that drives the filter hole plate 21 to rotate toward the reference surface.

[0035] Reference Figure 5 and Figure 6 In some embodiments of the present application, the connecting assembly 5 further includes a second connecting seat 54 and a compression spring 55. The second connecting seat 54 is fixedly connected to the movable seat 32. The expansion and contraction direction of the compression spring 55 is parallel to the first direction. One end of the compression spring 55 is fixedly connected to the second connecting seat 54 on the movable seat 32, and the other end is capable of contacting the filter plate 21. In the first direction, the compression spring 55 is located on the side of the filter plate 21 away from the reference surface. After the bidirectional screw 31 drives the two filter plates 21 to move until the free ends 212 of the filter plates 21 abut against each other, the bidirectional screw 31 then drives the two filter plates 21 to move toward the side away from each other. During this process, accompanied by the disturbance of the airflow and the elastic force of the compression spring 55 and the torsion spring 52, the filter plates 21 will shake to shake off the solid particles on the filter plates 21, reduce the adhesion of solid particles to the filter plates 21, and avoid clogging of the filter plates 21.

[0036] Reference Figure 7 In order to further reduce the adhesion of solid particles to the filter plate 21 and to collect the solid particles, in some embodiments of the present application, a plurality of nozzles 6 are provided in the ventilation pipe 1. The nozzles 6 are connected to the water source through a water pipe. The nozzles 6 and the bidirectional screw 31 are located on the same side of the ventilation pipe 1. The spraying direction of the nozzles 6 can be toward the side of the filter plate 21, so as to more thoroughly flush away the solid particles on the filter plate 21. In order to collect the sewage formed after the injection, a drainage hole 13 is opened on the side of the ventilation pipe 1 away from the bidirectional screw 31; the ventilation pipe 1 is provided with a water stopper 7 in the drainage hole 13, and the water stopper 7 is threadedly connected to the ventilation pipe 1. When draining, just unscrew the water stopper.

[0037] The implementation principle of a filtering structure for coal mine ventilation in an embodiment of the present application is: air flow is introduced into the ventilation pipe 1, and then the motor 43 drives the bidirectional screw 31 to rotate through the second bevel gear 42 and the first bevel gear 41, and the bidirectional screw 31 drives the filter plate 21 installed on the movable seat 32 to move. During this process, the airflow disturbs the filter plate 21 to rotate along the movable seat 32 to shake off the solid particles on the filter plate 21. At the same time, the nozzle 6 can first spray water in the ventilation pipe 1 to further mix the solid particles into the water to form sewage, and finally, it can be discharged through the drainage hole 13.

[0038] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A filter structure for coal mine ventilation, characterized in that: include: A ventilation pipe (1), the ventilation pipe (1) being arranged parallel to a first direction; as well as, A filter assembly (2), the filter assembly (2) comprising: A filter plate (21), wherein an angle is formed between a plate surface of the filter plate (21) and the first direction, and the angle is not equal to 90°; The filter plate (21) is slidably connected to the ventilation pipe (1) along a first direction, and a driving component (3) is connected between the ventilation pipe (1) and the filter plate (21), and the driving component (3) is used to drive the filter plate (21) to move along the first direction.

2. A filter structure for coal mine ventilation according to claim 1, characterized in that: The filter assembly (2) comprises two filter orifice plates (21), one of the filter orifice plates (21) being a first filter orifice plate (21a), and the other filter orifice plate (21) being a second filter orifice plate (21b), the first filter orifice plate (21a) and the second filter orifice plate (21b) being spaced apart in a first direction.

3. A filter structure for coal mine ventilation according to claim 2, characterized in that: A plurality of filter assemblies (2) are spaced apart and distributed along a first direction in the ventilation pipe (1).

4. A filter structure for coal mine ventilation according to claim 3, characterized in that: The driving assembly (3) comprises: A bidirectional screw (31), the bidirectional screw (31) is parallel to the first direction; a plurality of bidirectional screws (31) are sequentially distributed along the first direction, and two adjacent bidirectional screws (31) are coaxially fixedly connected; each of the filter components (2) is correspondingly connected to one of the bidirectional screws (31); and, A movable seat (32), the movable seat (32) being slidably connected to the ventilation pipe (1) along a first direction, and each corresponding threaded portion of the two threaded sections of the bidirectional screw (31) being threadedly connected to one movable seat (32); The two filter plates (21) in the filter assembly (2) are each correspondingly connected to one of the movable seats (32).

5. A filter structure for coal mine ventilation according to claim 4, characterized in that: A groove (11) is formed on the wall of the ventilation pipe (1), the bidirectional screw (31) is located in the groove (11), and the bidirectional screw (31) is located on the side of the filter plate (21).

6. A filter structure for coal mine ventilation according to claim 5, characterized in that: One end of the filter plate (21) connected to the movable seat (32) is a connecting end (211), and the end facing away from the connecting end (211) is a free end (212); The first filter plate (21a) and the second filter plate (21b) are symmetrical about a reference plane, the reference plane being a virtual plane located between the first filter plate (21a) and the second filter plate (21b) in a first direction, and the reference plane being arranged perpendicular to the first direction; The spacing between the two filter plates (21) in the filter assembly (2) along the first direction gradually decreases from the connecting end (211) to the free end (212).

7. A filter structure for coal mine ventilation according to any one of claims 4 to 6, characterized in that: It also includes a connecting assembly (5), wherein each corresponding filter plate (21) is connected to the movable seat (32) via the connecting assembly (5); the connecting assembly (5) includes: A rotating shaft (51), wherein the filter plate (21) is rotatably connected to the movable seat (32) via the rotating shaft (51); and A torsion spring (52) is connected between the movable seat (32) and the filter plate (21), and when the torsion spring (52) is in a deformed posture capable of recovering the deformation, the torsion spring (52) has a force that drives the filter plate (21) to rotate toward a reference surface.

8. A filter structure for coal mine ventilation according to claim 7, characterized in that: The connecting component (5) further comprises: a compression spring (55), wherein the expansion and contraction direction of the compression spring (55) is parallel to the first direction, and one end of the compression spring (55) is fixedly connected to the movable seat (32), and the other end is capable of contacting the filter plate (21); In the first direction, the compression spring (55) is located on a side of the filter plate (21) away from the reference surface.

9. A filter structure for coal mine ventilation according to claim 7, characterized in that: The filter plate (21) is a wave-shaped plate.

10. A filter structure for coal mine ventilation according to claim 9, characterized in that: A plurality of nozzles (6) are provided in the ventilation pipe (1), and the nozzles (6) and the bidirectional screw (31) are located on the same side of the ventilation pipe (1).

Images