Supporting equipment for metal mine mining

Abstract

According to the supporting equipment for metal mine mining, an arc-shaped supporting plate capable of supporting the top of a metal mine hole is arranged, and the arc-shaped supporting plate can conduct buffering protection through a buffering protection mechanism between the arc-shaped supporting plate and a top plate when pressure is applied to the metal mine hole, so that the supporting effect is provided for the top of the supporting equipment; an edge supporting mechanism is arranged, when a moving plate is pressed downwards, a first air bag is extruded to convey internal air to a second air bag through an air guide pipe, the second air bag pushes a shifting plate, the shifting plate rotates to support the inner side of a supporting plate, the supporting plate supports the inner wall of the metal mine hole, and the supporting range can be widened; by arranging the inlet and outlet capable of enabling air in the metal mine to circulate, air can enter the left side of the support through the air inlet and can be discharged out of the right side of the support through the air outlet according to the Venturi principle, the content of oxygen in the air in the metal mine is increased, oxygen deficit of workers during working is avoided, and the working efficiency is improved. And the safety of workers is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal mining, in particular to a supporting device for metal mining. Background Art

[0002] When mining metal mines, it is necessary to support the mine cave to prevent the collapse of the mine cave and to provide safety protection for the workers inside the mine cave. The existing support equipment used in metal mines still has certain defects, such as: A metal mining production safety support equipment with publication number CN210178378U includes a protective shed, the bottom surface of the protective shed is fixedly connected with a support plate, the upper surface of the support plate is fixedly connected with a vertical reinforcement rib, the outer surface of the vertical reinforcement rib is fixedly connected with a first transverse reinforcement rib, the left and right ends of the first transverse reinforcement rib are fixedly connected to the inner wall of the protective shed, and support columns are placed on the left and right sides of the protective shed. This utility model has a reasonable design structure. It can adjust the height of the support equipment by setting a jack and a support column, and by using the lifting of the jack. It can disassemble and install the protective shed by setting a support plate and a fixed block, and by using the cooperation of a T-shaped slide groove and a T-shaped slider. It can quickly disassemble and install the support equipment by setting a support column, a first connecting plate and a second connecting plate, and by using the rotation of a basket screw, thereby solving the problem that the support equipment cannot be quickly disassembled and installed during use. However, the support equipment cannot support the left and right sides of the mine. If collapse occurs, it cannot achieve a comprehensive support effect, and the support effect is poor.

[0003] A support structure for coal mining with publication number CN217783551U includes a protection component and a lifting component, wherein the protection component includes a plurality of second protection sheds and a third protection shed connected to the second protection sheds end to end, wherein the plurality of second protection sheds are arranged equidistantly, and two adjacent second protection sheds are connected by the third protection shed, and relates to the technical field of coal mining, wherein a plurality of lifting components are provided, and the plurality of lifting components are connected by the second protection shed, and the folding plate is a foldable structure, so that when the top surface of the tunnel is an irregular structure, even if the lifting height is different, the top surfaces with different rules can be effectively adapted to by the deformation of the folding plate, and a first protection shed is provided at the lower end of the second protection shed, and the first protection shed is connected to the lifting rod, and if the second protection shed is damaged, the gravel on the top surface can fall on the upper surface of the first protection shed. The coal mine adopts a support structure, and by connecting multiple sets of lifting components with a second protective shed, it can effectively avoid the occurrence of safety accidents. However, when the staff enter the mine to work, due to the thin air inside the mine, the staff cannot breathe enough oxygen and may suffer from hypoxia. Summary of the invention

[0004] The purpose of the present invention is to provide a support device for metal mining to solve the technical problems of poor support effect and possible risk of hypoxia for workers in the above-mentioned existing support equipment.

[0005] To achieve its purpose, the present invention adopts the following technical solution: A support device for metal mining, comprising two side brackets, the top ends of the two end brackets are connected to an arc-shaped top plate, a slide groove is provided on the inner side of the top of the bracket, a slider is slidably arranged in the slide groove, and a movable plate is installed on the inner side of the top of the two end brackets through the slider; a fixed rod is provided at the bottom of both ends of the movable plate, and a movable block is slidably connected to the fixed rod; the inner side of the bracket at the bottom of the slide groove is connected to one end of the second support rod, and the other end of the second support rod is connected to the movable block; a first support rod is symmetrically installed on the top of the movable plate, the top end of the first support rod passes through the top plate, and a support protection mechanism is installed at the end, and the support protection mechanism supports the pressure on the upper end of the support equipment through the movable plate; The outer side of the bracket is symmetrically installed with a limit sleeve rod, the end of the limit sleeve rod is connected to the V-shaped support plate through a rotating rod, and the inner side of the V-shaped support plate is provided with an edge support mechanism, and the edge support mechanism supports the edge position of the metal mine cave through the V-shaped support plate; An inner oblique opening is provided at the bottom of the inner slide groove of the left bracket, and the bottom of the inner oblique opening is connected to the air inlet. A circulating inlet and outlet dust removal mechanism is arranged inside the air inlet, and the circulating inlet and outlet dust removal mechanism circulates air inside the metal mine through the air inlet.

[0006] As a further improvement of the technical solution of the present invention, the supporting and protecting mechanism includes an arc-shaped supporting plate connected to the first supporting rod in the middle of the inner side, a positioning rod is installed in a groove on the outside of the top plate, a moving block is provided on the outer sleeve of the positioning rod, the top of the moving block is rotatably connected to one end of the moving rod, and the other end of the moving rod is rotatably installed on the inner side of the arc-shaped supporting plate.

[0007] Furthermore, a return spring is sandwiched between the outer periphery of the positioning rod and the moving block, and a damping rod is fixedly installed between the outer groove of the top plate and the arc-shaped support plate.

[0008] Furthermore, the edge support mechanism includes a first air bag placed in the slide groove, and the first air bag is provided with an air guide tube penetrating the bracket.

[0009] Furthermore, the V-shaped support plate is composed of two support plates, which are connected by a rotating rod, and a torsion spring is sleeved on the outer periphery of the rotating rod; a protective pad is provided on the inner side of the V-shaped support plate, and a shift plate is provided on the outer side of the V-shaped support plate, and the shift plate abuts against the groove on the outer side of the bracket.

[0010] Furthermore, the air guide tube is divided into two at the outer end of the bracket, and the two are respectively connected to the second airbags. The top of the second airbag is connected to the bracket, and the bottom forms a pressed structure with the shift plate.

[0011] Furthermore, the circulating in-and-out dust removal mechanism includes a partition fixedly installed inside the first airbag, the partition divides the first airbag into two upper and lower chambers, and a one-way valve port is installed through the outer side of the lower chamber of the first airbag.

[0012] Furthermore, an outer oblique opening opposite to the inner oblique opening is provided inside the right bracket, and the lower end of the outer oblique opening is connected to the air outlet arranged inside the right bracket, and the outer oblique opening is in opposite directions to the inner oblique opening.

[0013] Furthermore, a rotating air plate and a disc rod are installed inside the air inlet, and the rotating axis of the rotating air plate is connected to the rod end of the disc rod by a belt; a round rod is fixed to the outer side of the disc end of the disc rod, and the surface of the round rod is nested and connected with the transverse part of the T-shaped groove push rod, and a filter net is provided at the end of the longitudinal part of the T-shaped groove push rod, and a limiting member is installed through the middle part of the groove push rod, and the upper end of the limiting member is fixedly installed on the inner wall of the air inlet.

[0014] Furthermore, a limiting groove is provided on the inner wall of the air inlet, and limiting blocks matching the limiting groove are fixedly installed at the upper and lower ends of the filter screen.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. An arc-shaped support plate capable of supporting the top of the metal mine cave is provided. The arc-shaped support plate can provide buffer protection when the metal mine cave is pressurized through the buffer protection mechanism between the arc-shaped support plate and the top plate, provide support effect for the top of the support equipment, protect the staff, and improve the structural strength of the support equipment; Furthermore, when the top of the supporting device is subjected to pressure, the first support rod presses down the movable plate, and a second support rod capable of supporting the top is also provided between the movable plate and the bracket. When the second support rod is providing support, it slides along the fixed rod through the movable block until the movable block abuts against the movable plate, thereby providing a better supporting effect and further improving the structural strength of the device. 2. An edge support mechanism is provided. When the moving plate is pressed down, the first airbag is squeezed to deliver the internal air to the second airbag through the air guide tube. The second airbag pushes the paddle plate, and the paddle plate rotates to support the inner side of the support plate, so that the support plate supports the inner wall of the metal mine cave, and the support plate is protected by a protective pad to prevent the support plate from being worn, which can further improve the service life of the device and support the outer side of the bracket, and can increase the support range; 3. An inlet and outlet are provided to circulate the air inside the metal mine cave. Through the Venturi principle, the air can be taken in through the air inlet on the left side of the bracket, and the air inside the metal mine cave can be discharged through the air outlet on the right side of the bracket, thereby increasing the oxygen content in the air inside the metal mine cave, avoiding hypoxia of the workers during work, and improving the safety of the workers; Furthermore, when the air inlet inflates the interior of the metal mine, the rotating wind plate receives the action of wind and can rotate, driving the disc rod at the rear end to rotate. The rotation of the disc rod can drive the groove push rod nested in front of its surface to push the filter to move forward and backward, thereby filtering dust and avoiding clogging of the filter. At the same time, when the air outlet discharges air, the dust inside the metal mine can be drawn out together with the air, thereby avoiding excessive dust inside the metal mine being absorbed by the staff and affecting their safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front cross-sectional structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the side cross-sectional structure of the movable plate of the present invention; Figure 3 It is a schematic diagram of the front cross-sectional structure of the positioning rod of the present invention; Figure 4 For the present invention Figure 1 The enlarged structural diagram at A in the middle; Figure 5 It is a schematic diagram of the front cross-sectional structure of the limit sleeve rod of the present invention; Figure 6 It is a schematic diagram of the side cross-sectional structure of the second airbag of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the support plate of the present invention; Figure 8 It is a schematic diagram of the side cross-sectional structure of the right bracket of the present invention; Fig. 9 It is a schematic diagram of the side cross-sectional structure of the left bracket of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the rotating wind plate of the present invention.

[0017] In the figure: 1, bracket; 2, curved top plate; 3, moving plate; 4, slider; 5, slide; 6, first support rod; 7, curved support plate; 8, second support rod; 9, movable block; 10, fixed rod; 11, positioning rod; 12, moving block; 13, moving rod; 14, return spring; 15, damping rod; 16, first airbag; 17, partition; 18, one-way valve port; 19, air guide tube; 20, first Two air bags; 21. Limit sleeve rod; 22. Rotating rod; 23. Support plate; 24. Protective pad; 25. Torsion spring; 26. Paddle plate; 27. Inner bevel; 28. Air inlet; 29. ​​Outer bevel; 30. Air outlet; 31. Rotating air plate; 32. Belt; 33. Disc rod; 34. Round rod; 35. Grooved push rod; 36. Filter; 37. Limiting piece; 38. Limiting block; 39. Limiting slot. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example 1 like Figure 1 , Figure 2 and Figure 3 The technical solution shown mainly solves the problem of poor support effect at the top of the support mechanism, sets up a support protection mechanism, and improves its structure: The support equipment used in metal mining comprises two side brackets 1, the top of the two end brackets 1 are connected to the arc-shaped top plate 2, the inner side of the top of the bracket 1 is provided with a slide groove 5, and a slider 4 is slidably arranged in the slide groove 5, and a movable plate 3 is installed on the inner side of the top of the two end brackets 1 through the slider 4; the bottom of the two ends of the movable plate 3 is provided with a fixed rod 10, and the fixed rod 10 is slidably connected to the movable block 9; the inner side of the bracket 1 at the bottom of the slide groove 5 is connected to one end of the second support rod 8, and the other end of the second support rod 8 is connected to the movable block 9; the top of the movable plate 3 is symmetrically rotated with a first support rod 6, the top of the first support rod 6 passes through the top plate 2, and a support protection mechanism is installed at the end. The supporting and protecting mechanism supports the pressure on the upper end of the supporting equipment through the movable plate 3; the limiting sleeve rod 21 is symmetrically installed on the outer side of the bracket 1, and the end of the limiting sleeve rod 21 is connected to the V-shaped support plate 23 through the rotating rod 22, and an edge supporting mechanism is arranged on the inner side of the V-shaped support plate 23, and the edge supporting mechanism supports the edge position of the metal mine cave through the V-shaped support plate 23; the bottom of the internal slide groove 5 of the left bracket 1 is provided with an inner oblique opening 27, and the bottom of the inner oblique opening 27 is connected to the air inlet 28, and a circulating inlet and outlet dust removal mechanism is arranged inside the air inlet 28, and the circulating inlet and outlet dust removal mechanism circulates air inside the metal mine through the air inlet 28.

[0020] Specifically, the supporting and protecting mechanism includes an arc-shaped supporting plate 7 connected to the first supporting rod 6 in the middle inner part, a positioning rod 11 is installed in a groove on the outside of the top plate 2, a moving block 12 is arranged on the outer sleeve of the positioning rod 11, the top of the moving block 12 is rotatably connected to one end of the moving rod 13, and the other end of the moving rod 13 is rotatably installed on the inner side of the arc-shaped supporting plate 7; a reset spring 14 is clamped between the outer periphery of the positioning rod 11 and the moving block 12, and a damping rod 15 is fixedly installed between the outer groove of the top plate 2 and the arc-shaped supporting plate 7.

[0021] When pressure is applied to the top of the metal mine, the arc support plate 7 presses down the moving rod 13. The moving rod 13 is rotatably installed at the upper and lower ends. Therefore, when pressure is applied to the arc support plate 7, the moving rod 13 pushes the moving block 12 to slide along the positioning rod 11 and squeeze the return spring 14. The return spring 14 releases pressure on the moving rod 13 through its own elastic force. When the return spring 14 generates reciprocating vibrations, the damping rod 15 between the top plate 2 and the arc support plate 7 releases pressure on the reciprocating elastic force of the return spring 14. At the same time, the bottom of the first support rod 6 and the rotating installation of the moving plate 3 are coordinated. When the arc support plate 7 is subjected to pressure, pressure is applied to the moving plate 3 through the first support rod 6. The moving plate 3 slides along the slide groove 5 through the slider 4, and the second support rod 8 rotatably installed on the inner side of the bracket 1 rotates to drive the upper movable block 9 to slide along the fixed rod 10. In this way, the applied pressure is supported by the second support rod 8, thereby improving the top support mechanism of the support equipment and improving the support effect.

[0022] Example 2 like Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The technical solution shown mainly solves the problem of poor support effect at the edge of the support equipment. On the basis of Example 1, the edge support mechanism is improved: The edge support mechanism includes a first airbag 16 placed in the slide groove 5, and an air guide tube 19 is provided on the first airbag 16 and passes through the bracket 1. The V-shaped support plate 23 is composed of two support plates, and the two support plates are connected by a rotating rod 22. The outer periphery of the rotating rod 22 is sleeved with a torsion spring 25; a protective pad 24 is provided on the inner side of the V-shaped support plate 23, and a paddle 26 is provided on the outer side of the V-shaped support plate 23, and the paddle 26 abuts against the groove on the outer side of the bracket 1. The air guide tube 19 is located at the outer end of the bracket 1 and is divided into two, and the two are respectively connected to the second airbag 20. The top of the second airbag 20 is connected to the bracket 1, and the bottom forms a pressed structure with the paddle 26.

[0023] In this example, when the upper end of the support device is under pressure, the movable plate 3 descends along the slide groove 5 through the slider 4, and the slider 4 descends to squeeze the first airbag 16. The first airbag 16 is squeezed, and the air inside the upper chamber of the first airbag 16 is transported to the upper and lower second airbags 20 outside the bracket 1 through the forked air guide tube 19. The second airbag 20 expands and pushes the paddle plate 26, so that the upper and lower support plates 23 rotate around the rotating rod 22 limited by the limiting sleeve rod 21, so as to unfold. At this time, the force-bearing position on the inner side of the support plate 23 is supported, and at the same time, the torsion spring 25 arranged on the inner side of the upper and lower support plates 23 is used to relieve pressure, so as to achieve the effect of secondary support. At the same time, the protective pad 24 on the outer side of the support plate 23 protects the support plate 23 to avoid its wear, thereby increasing the service life of the device, and can provide secondary support to further improve the support effect.

[0024] Example 3 like Figure 1 , Figure 4 , Figure 5 , Figure 8 , Fig. 9 and Fig.10 The technical solution shown mainly solves the problem of low oxygen content and high dust content in the air inside the metal mine. On the basis of Example 2, the circulating in-and-out dust removal mechanism is improved: The circulating in-and-out dust removal mechanism includes a partition 17 fixedly installed inside the first airbag 16, and the partition 17 divides the first airbag 16 into two upper and lower chambers. A one-way valve port 18 is installed through the outer side of the lower chamber of the first airbag 16. An outer oblique port 29 opposite to the inner oblique port 27 is provided inside the right bracket 1, and the lower end of the outer oblique port 29 is connected to the air outlet 30 provided inside the right bracket 1, and the outer oblique port 29 is opposite to the inner oblique port 27 in direction. A rotating air plate 31 and a disc rod 33 are installed inside the air inlet 28. The rotating shaft of the rotating air plate 31 is connected to the rod end of the disc rod 33 through a belt 32. A round rod 34 is fixed to the outer side of the disc end of the disc rod 33. The surface of the round rod 34 is nested and connected with the horizontal part of the T-shaped groove push rod 35. A filter screen 36 is provided at the end of the vertical part of the T-shaped groove push rod 35. A limiting member 37 is installed through the middle of the groove push rod 35. The upper end of the limiting member 37 is fixedly installed on the inner wall of the air inlet 28. A limiting groove 39 is provided on the inner wall of the air inlet 28. Limiting blocks 38 matching the limiting groove 39 are fixedly installed at the upper and lower ends of the filter screen 36.

[0025] In this example, when the first airbag 16 is squeezed, a partition 17 is provided inside the first airbag 16, and the partition 17 divides the first airbag 16 into two compartments. When the first airbag 16 is squeezed, the air inside the lower compartment is blown into the air inlet 28 through the inner oblique port 27. According to the Venturi principle, when the inner oblique port 27 is tilted to blow air into the air inlet 28, the pressure at the front end of the air inlet 28 is high, so the air at the front end enters the metal mine cave along the air inlet 28, and when the opposite outer oblique port 29 is tilted to pressurize the air into the air outlet 30, the pressure inside the air outlet 30 is high, so the air and dust inside the metal mine cave are discharged through the air outlet 30. In combination with the one-way valve port 18 provided at the bottom edge of the first airbag 16, the one-way valve port 18 can only take in air but not discharge air. As the first airbag 16 rebounds, the lower compartment of the first airbag 16 can be refilled with air, and can be used in a reciprocating cycle. The effect of air circulation is achieved to avoid the problem of oxygen deficiency of workers in the metal mine due to the scarce air inside. At the same time, the dust inside is discharged through the air outlet 30, which can prevent the workers from inhaling too much dust and damaging the holy body. At the same time, when air is taken in from the air inlet 28, the incoming air is filtered through the filter 36 to prevent dust from entering the interior of the mine. When air is taken in from the air inlet 28, the flowing wind blows and rotates the wind plate 31. The rotation of the rotating wind plate 31 drives the disc rod 33 to rotate through the belt 32. The rotation of the disc rod 33 drives the round rod 34 on its surface to rotate. The rotation of the round rod 34 drives the "T"-shaped groove push rod 35 nested on its surface to move. The groove push rod 35 can pull the filter 36 forward and backward under the limitation of the limiting member 37, and the filter 36 slides forward and backward along the limiting groove 39 through the limiting block 38, so that the filter 36 shakes back and forth to prevent dust from accumulating on the surface of the filter 36, which can avoid dust clogging.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A support device for metal mining, characterized by: The invention comprises two side brackets (1), the top ends of the two end brackets (1) are connected to the arc-shaped top plate (2), a slide groove (5) is provided on the inner side of the top of the bracket (1), a slider (4) is slidably provided in the slide groove (5), and a movable plate (3) is installed on the inner side of the top of the two end brackets (1) through the slider (4); a fixed rod (10) is provided at the bottom of both ends of the movable plate (3), and a movable block (9) is slidably connected to the fixed rod (10); the inner side of the bracket (1) at the bottom of the slide groove (5) is connected to one end of the second support rod (8), and the other end of the second support rod (8) is connected to the movable block (9); A first support rod (6) is symmetrically mounted on the top of the movable plate (3), the top of the first support rod (6) passes through the mounting top plate (2), and a support and protection mechanism is mounted on the end thereof, the support and protection mechanism supports the pressure on the upper end of the supporting device through the movable plate (3); A limiting sleeve rod (21) is symmetrically mounted on the outside of the bracket (1), and the end of the limiting sleeve rod (21) is connected to a V-shaped support plate (23) via a rotating rod (22). An edge support mechanism is provided on the inside of the V-shaped support plate (23), and the edge support mechanism supports the edge position of the metal mine through the V-shaped support plate (23); An inner oblique opening (27) is provided at the bottom of the inner chute (5) of the left bracket (1), and the bottom of the inner oblique opening (27) is connected to an air inlet (28). A circulating inlet and outlet dust removal mechanism is provided inside the air inlet (28), and the circulating inlet and outlet dust removal mechanism circulates air inside the metal mine through the air inlet (28).

2. The support equipment for metal mining according to claim 1, characterized in that: The supporting and protecting mechanism comprises an arc-shaped supporting plate (7) connected to the first supporting rod (6) at the middle of the inner side, a positioning rod (11) is installed in a groove on the outer side of the top plate (2), a moving block (12) is provided on the outer sleeve of the positioning rod (11), the top of the moving block (12) is rotatably connected to one end of the moving rod (13), and the other end of the moving rod (13) is rotatably installed on the inner side of the arc-shaped supporting plate (7).

3. The support equipment for metal mining according to claim 2, characterized in that: A return spring (14) is clamped between the outer periphery of the positioning rod (11) and the moving block (12), and a damping rod (15) is fixedly installed between the outer groove of the top plate (2) and the arc-shaped support plate (7).

4. The support equipment for metal mining according to claim 1, characterized in that: The edge support mechanism comprises a first air bag (16) placed in the slide groove (5), and an air guide tube (19) is provided on the first air bag (16) and passes through the bracket (1).

5. The support equipment for metal mining according to claim 4, characterized in that: The V-shaped support plate (23) is composed of two support plates, which are connected by a rotating rod (22). A torsion spring (25) is sleeved on the outer periphery of the rotating rod (22). A protective pad (24) is provided on the inner side of the V-shaped support plate (23), and a shift plate (26) is provided on the outer side of the V-shaped support plate (23). The shift plate (26) abuts against a groove on the outer side of the bracket (1).

6. The support equipment for metal mining according to claim 5, characterized in that: The air guide tube (19) is located at the outer end of the bracket (1) and is divided into two parts, and the two parts are respectively connected to the second airbag (20). The top of the second airbag (20) is connected to the bracket (1), and the bottom forms a pressed structure with the dial plate (26).

7. The support equipment for metal mining according to claim 1, characterized in that: The circulating in-and-out dust removal mechanism comprises a partition (17) fixedly mounted inside the first airbag (16), wherein the partition (17) divides the first airbag (16) into two upper and lower chambers, and a one-way valve port (18) is installed through the outer side of the lower chamber of the first airbag (16).

8. The support equipment for metal mining according to claim 7, characterized in that: An outer oblique opening (29) is provided inside the right bracket (1) and is opposite to the inner oblique opening (27). The lower end of the outer oblique opening (29) is connected to the air outlet (30) provided inside the right bracket (1). The outer oblique opening (29) and the inner oblique opening (27) are oriented in opposite directions.

9. The support equipment for metal mining according to claim 8, characterized in that: A rotating air plate (31) and a disc rod (33) are installed inside the air inlet (28), and the rotating shaft of the rotating air plate (31) is connected to the rod end of the disc rod (33) through a belt (32); a round rod (34) is fixed on the outer side of the disc end of the disc rod (33), and the surface of the round rod (34) is nested and connected with the horizontal part of the T-shaped groove push rod (35), and a filter screen (36) is provided at the end of the vertical part of the T-shaped groove push rod (35), and a limiting member (37) is installed through the middle of the groove push rod (35), and the upper end of the limiting member (37) is fixedly installed on the inner wall of the air inlet (28).

10. The support equipment for metal mining according to claim 9, characterized in that: A limiting groove (39) is provided on the inner wall of the air inlet (28), and limiting blocks (38) that match the limiting groove (39) are fixedly mounted at the upper and lower ends of the filter screen (36).

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