A dustproof device for coal industry

Abstract

The utility model discloses a coal industry dustproof device relates to coal industry dustproof field, including support frame, both sides of the upper end of support frame are hinged with inclined bracing frame, and both sides of one of inclined bracing frame are provided with limit component, and limit component is used for locking the relative state of support frame and inclined bracing frame, be provided with guide slot on support frame, be provided with sliding slot on inclined bracing frame, and dust screen is arranged in the common sliding of guide slot and sliding slot, the utility model discloses through overturning - locking structure, realizes the switching of " non open -air low stable form " with " open -air high windproof form " to need not separately purchase two kinds of device, reduces equipment purchase cost, reduces the demand of storage space simultaneously, reduces the cost of warehousing and transportation.

Description

Technical Field

[0001] This utility model belongs to the field of dust control in the coal industry, specifically a dust control device for the coal industry. Background Technology

[0002] In coal production, dust control is a crucial aspect of ensuring a safe working environment and protecting the health of personnel. Whether in open-pit coal yards, open-pit belt conveyor transport, or underground transfer tunnels and indoor coal bunkers, dust control devices are essential to prevent dust dispersion. Currently, most dust control devices used in the coal industry are fixed structures, falling into two categories based on the application: low-height devices suitable for non-open-pit environments, focusing on preventing localized dust dispersion; and high-height devices suitable for open-pit environments, requiring windproof capabilities to prevent dust from being blown away by the wind.

[0003] Existing fixed-form dustproof devices cannot simultaneously adapt to both open-air and non-open-air scenarios. If a high-height outdoor device is used in a non-open-air scenario, its excessive height will occupy limited space and is prone to damage from top collisions. If a low-height non-open-air device is used in an open-air scenario, its dustproof height is insufficient, failing to effectively resist wind and significantly reducing dust control effectiveness. To meet the needs of different scenarios, companies need to purchase two types of devices separately, which not only increases procurement costs but also requires separate storage, transportation, and installation. When switching scenarios, disassembly and reinstallation are necessary, making the operation cumbersome and inefficient. Utility Model Content

[0004] The purpose of this utility model is to provide a dust control device for the coal industry, in order to solve the problems of existing dust control devices having a fixed structure, being unable to adapt to open-air and non-open-air scenarios, resulting in high procurement costs, low switching efficiency, and difficulty in meeting the needs of flexible operation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dust prevention device for the coal industry, including a support frame, wherein both sides of the upper end of the support frame are hinged with diagonal bracing frames, and one of the diagonal bracing frames is provided with a limit component on both sides, the limit component being used to lock the relative state of the support frame and the diagonal bracing frame.

[0006] The support frame is provided with a guide groove, and the inclined brace frame is provided with a sliding groove. A dustproof net is slidably installed in both the guide groove and the sliding groove.

[0007] Preferably, the support frame includes a square frame with a plurality of horizontal bars on the square frame, and the guide groove passes through the square frame and the horizontal bars; the lower end of the square frame is provided with a plurality of grooves, and grounding rods are provided in the grooves.

[0008] Preferably, the diagonal bracing frame includes a U-shaped frame hinged to the square frame of the support frame, and the U-shaped frame has a plurality of connecting ears on the side near the ground, with insert rods inserted into the connecting ears.

[0009] Preferably, the limiting component includes a hinge rod hinged to the U-shaped frame, and a locking member is provided at the end of the hinge rod; both the square frame and the remaining U-shaped frame of the support frame are provided with positioning holes, and the locking member is inserted into the positioning holes.

[0010] Preferably, the upper end of the U-shaped frame of the diagonal bracing frame is hinged with a stop block, which is used to prevent the dustproof net from falling out of the chute; the top of the square frame of the support frame is provided with two clearance grooves, which are adapted to the stop block.

[0011] Preferably, the grounding rod includes a tapered rod and a circular baffle, the circular baffle fitting into the groove, and the tapered rod inserted into the ground to fix the support frame.

[0012] Preferably, the lower end of the insertion rod is tapered, and the upper end is provided with a circular handle. The insertion rod passes through the connecting ear and is inserted into the ground to fix the diagonal brace frame.

[0013] Preferably, the locking component includes a wing bolt and a nut. The wing bolt passes through the through hole of the hinge rod and is threadedly connected to the positioning hole to lock the diagonal brace frame and the support frame.

[0014] Preferably, the dustproof net has a reinforced edging, and fiberglass ribs are threaded through the reinforced edging. The dustproof net is made of high-density polyethylene.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This utility model achieves the switching between "non-open-air low-stability mode" and "open-air high windproof mode" through a flip-lock structure, eliminating the need to purchase two types of devices separately, thus reducing equipment procurement costs; at the same time, it reduces storage space requirements and lowers warehousing and transportation costs.

[0017] 2. This utility model uses a dustproof net that can be adapted to two forms via guide grooves and slides. In the non-open-air form, it covers low-height areas and is suitable for scenarios with limited space. In the open-air form, the height increases as the diagonal bracing frame flips, thereby improving dustproof efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 A first-view perspective three-dimensional structural diagram of the indoor use provided for an embodiment of this utility model;

[0020] Figure 2 A first-view perspective three-dimensional structural diagram of the indoor use provided for an embodiment of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the outdoor use of this utility model.

[0022] In the picture:

[0023] 1. Support frame; 101. Square frame; 102. Crossbar; 103. Guide groove; 104. Groove; 2. Diagonal brace frame; 201. U-shaped frame; 202. Connecting ear; 203. Insert rod; 3. Dustproof net; 4. Limiting component; 401. Hinge rod; 402. Locking component; 5. Grounding rod; 6. Stop block; 7. Clearance groove; 8. Positioning hole; 9. Slide groove. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] As attached Figure 1 To be continued Figure 3 As shown:

[0026] This utility model provides a dust control device for the coal industry, including a support frame 1. Both sides of the upper end of the support frame 1 are hinged with diagonal bracing frames 2. Each diagonal bracing frame 2 has a limiting component 4 on both sides, which is used to lock the relative state of the support frame 1 and the diagonal bracing frame 2. The support frame 1 is provided with a guide groove 103, and the diagonal bracing frame 2 is provided with a sliding groove 9. A dust control net 3 is slidably arranged in the guide groove 103 and the sliding groove 9.

[0027] The support frame 1 is welded and formed with Q235B galvanized steel pipes (diameter 30mm, wall thickness 2.5mm), including a 1500mm×1000mm square frame 101. Along the length direction of the square frame 101, 2 reinforcing cross bars 102 (diameter 30mm) with a spacing of 500mm are welded to form a "field" shaped structure (deflection ≤ 1mm / m). On the inner sides of the two vertical bars on both sides of the square frame 101, rectangular guide grooves 103 with a size of 15mm×8mm are opened (the inner wall is polished to Ra1.6, and 10mm×10mm positioning slots are provided at both ends). On the lower surface of the square frame 101, 4 grooves 104 with a diameter of 20mm and a depth of 10mm are opened (150mm away from the edge). There are 2 groups of diagonal support frames 2, symmetrically hinged to the upper end of the square frame 101. Each group contains a 1500mm×1500mm U-shaped frame 201 (made of the same material steel pipe, hinged by 304 stainless steel hinges, flipping angle ≥ 180°). On the outer side of the lower end of the U-shaped frame 201, 2 groups of connecting ears 202 are welded (each group has 2 steel plates with a thickness of 8mm, a spacing of 15mm, 21mm through holes are opened, and 6mm thick reinforcing ribs are welded). The connecting ears 202 are penetrated by Φ20mm×2mm galvanized insertion rods 203 (length 300mm, 30° tapered head at the lower end, 30mm round handle welded at the upper end, inserted into the ground ≥ 200mm, pull-out resistance ≥ 400N). On the inner side of the U-shaped frame 201, a 15mm×8mm sliding groove 9 is opened (aligned with the guide groove 103, deviation ≤ 1mm). The limit component 4 includes a Φ16mm×2mm galvanized hinge rod 401 (length 200mm, one end is hinged to the U-shaped frame 201 with a Φ8mm pin shaft, and a 12mm through hole is opened at the other end), and a locking part 402 composed of an M10×50mm butterfly bolt + nut; M10×1.5 positioning holes 8 are opened on the square frame 101 and the U-shaped frame 201 (3 groups on the outer side of the upper end of the U-shaped frame 201, with a spacing of 30°; 2 groups on the inner side of the upper end of the square frame 101). The dust-proof net 3 is made of HDPE material (mesh hole 0.5mm×0.5mm, dust-proof efficiency ≥ 85%, breaking strength ≥ 20kN / m, anti-aging ≥ 5000 hours), with a 10mm wide polyester edge binding (Φ5mm fiberglass bars are inserted inside), and the size is adapted to two forms (3000mm×1000mm for non-open-air, 3000mm×2500mm for open-air). A rubber stopper 6 (L-shaped 50mm×20mm×10mm, Shore hardness 60A) is hinged to the inner side of the upper end of the U-shaped frame 201, and 4 avoidance grooves 7 with a size of 25mm×15mm are opened at the upper end of the square frame 101 (adapted to the stopper 6). Ground anchors 5 (Φ20mm 45# round steel, length 400mm, 45° tapered head at the lower end, 30mm retaining plate welded at the upper end, inserted into the ground ≥ 300mm, pull-out resistance ≥ 600N) are placed in the grooves 104.

[0028] During operation, the staff first selects the appropriate configuration based on the scenario: In non-open-air scenarios (such as transfer tunnels), the support frame 1 is placed in the target area, and the ground stake 5 is driven into the ground through the groove 104 for fixation; the two diagonal support frames 2 are flipped downwards to 60° with the ground, and the insert rod 203 is driven into the ground through the connecting ear 202 to form a triangular support (wind resistance level 5); the dustproof net 3 slides into the guide groove 103 and slide groove 9 on both sides, with the bottom end engaging the positioning notch, and the rotating stop block 6 pressing the top. In open-air scenarios (such as coal yards), one diagonal support frame 2 is fixed downwards, and the other side is flipped upwards to 60° with the square frame 101, the hinge rod 401 is rotated to align with the positioning hole 8, and the locking piece 402 is screwed in to lock; the dustproof net 3 slides into the groove, and an 8mm stainless steel windproof cable can be added (one end connected to the diagonal support frame 2, and the other end fixed with a ground anchor, wind resistance level 7). By switching configurations to adapt to different scenarios, there is no need to purchase two types of devices, resulting in high dustproof efficiency and convenient installation.

[0029] In one embodiment of the present invention, the support frame 1 includes a square frame 101, a plurality of crossbars 102 are provided on the square frame 101, and the guide groove 103 passes through the square frame 101 and the crossbars 102; a plurality of grooves 104 are provided at the lower end of the square frame 101, and grounding rods 5 are provided in the grooves 104.

[0030] The horizontal bar 102 is welded vertically to the vertical bar of the square frame 101 with a weld leg height of 5mm to ensure no false welds; the gap between the groove 104 and the ground rod 5 retainer is ≤0.5mm, and the frame levelness error is ≤1° after the ground rod 5 is inserted.

[0031] During operation, the worker first aligns the ground probe 5 with the groove 104 and uses a hammer to strike the retaining plate until it is fully embedded in the groove 104, with the conical head of the ground probe 5 penetrating deep into the ground. The crossbar 102 enhances the stability of the square frame 101, and the through-hole design of the guide groove 103 ensures smooth sliding of the dustproof net 3. By fixing the ground probe 5 and reinforcing the crossbar 102, the support frame 1 is stably installed, providing reliable support for the dustproof net 3.

[0032] In one embodiment of the present invention, the diagonal bracing frame 2 includes a U-shaped frame 201 hinged to a square frame 101 of the support frame 1. The U-shaped frame 201 has a plurality of connecting ears 202 on the side near the ground, and a plug rod 203 is inserted into the connecting ears 202.

[0033] The hinges of the U-shaped frame 201 and the square frame 101 are made of 304 stainless steel (thickness 3mm, bearing torque ≥10N·m). The through hole of the connecting ear 202 and the fitting gap of the plug rod 203 are 0.5-1mm to ensure smooth insertion and removal of the plug rod 203.

[0034] During operation, the worker first flips the U-shaped frame 201 to the target angle, passes the insertion rod 203 through the connecting ear 202, and uses a hammer to strike the handle to insert the insertion rod 203 into the ground. The U-shaped frame 201 is fixed by the insertion rod 203, forming a stable triangular structure with the support frame 1. By hinged and fixed to the insertion rod 203, the diagonal bracing frame 2 can be flexibly flipped and stably positioned to adapt to different scene height requirements.

[0035] In one embodiment of the present invention, the limiting component 4 includes a hinge rod 401 hinged to the U-shaped frame 201, and a locking member 402 is provided at the end of the hinge rod 401; both the square frame 101 and the remaining U-shaped frame 201 of the support frame 1 are provided with positioning holes 8, and the locking member 402 engages with the positioning holes 8.

[0036] The hinge rod 401 pin is made of stainless steel (8mm in diameter, 0.1mm clearance). After the wing bolt of the locking part 402 is screwed into the positioning hole 8, the tightening torque is ≥15N·m to ensure no loosening.

[0037] During operation, the worker first flips the U-shaped frame 201 to its open-air position, rotates the hinge rod 401 to align the through hole with the positioning hole 8, inserts the wing bolt, and tightens it. The limiting component locks the relative position of the U-shaped frame and the support frame 1 to prevent the angle from shifting due to wind. By locking the hinge rod 401 with the thread, the open-air position of the diagonal bracing frame 2 is reliably fixed, improving its wind resistance.

[0038] In one embodiment of the present invention, a stop block 6 is hinged to the upper end of the U-shaped frame 201 of the diagonal bracing frame 2. The stop block 6 is used to restrict the dustproof net 3 from falling out of the sliding groove 9. Two clearance grooves 7 are provided on the top of the square frame 101 of the support frame 1. The clearance grooves 7 are adapted to the stop block 6.

[0039] The hinge shaft of the stop block 6 is a Φ5mm stainless steel pin (fit clearance 0.2mm), and the limiting force is ≥50N when rotated to the horizontal position; the depth of the clearance groove 7 is 15mm to ensure that there is no structural interference after the stop block 6 is inserted.

[0040] During operation, the worker first slides the dustproof net 3 into the guide groove 103 and the slide groove 9, then rotates the stop block 6 to a horizontal position, with one end engaging the clearance groove 7 and the other end pressing firmly against the top of the dustproof net 3. The stop block prevents the dustproof net 3 from sliding upwards due to vibration or wind, and the clearance groove 7 prevents the stop block 6 from colliding with the support frame 1. Through the cooperation of the stop block 6 and the clearance groove 7, the dustproof net 3 is reliably limited, ensuring gapless coverage.

[0041] In one embodiment of this utility model, the ground rod 5 includes a tapered rod and a circular baffle. The circular baffle fits into the groove 104, and the tapered rod is inserted into the ground to fix the support frame 1.

[0042] The surface of the tapered rod of ground drill 5 is hardened (HRC50-55), the diameter of the circular baffle is 30mm and the thickness is 5mm, and the flatness of the mating surface with the groove 104 is ≤0.1mm.

[0043] During operation, the worker first aligns the ground stake 5 with the groove 104 and uses a hammer to evenly tap the retaining plate until it is fully embedded in the groove 104, with the tapered rod penetrating the ground at least 300mm deep. The fit between the retaining plate and the groove 104 ensures that the support frame 2 remains tilted, and the tapered rod enhances grip. Through the structural design of the ground stake, the support frame 1 is stably fixed on different ground surfaces, adapting to the terrain of the coal yard.

[0044] In one embodiment of this utility model, the lower end of the insertion rod 203 is tapered, and the upper end is provided with a circular handle. The insertion rod 203 passes through the connecting ear 202 and is inserted into the ground to fix the diagonal brace frame 2.

[0045] The 203 insert has a tapered head with a 30° angle, making it easy to insert into gravel or hard ground; the round handle has a 30mm diameter and a knurled surface (coefficient of friction ≥0.8), making it easy to grip and insert / remove.

[0046] During operation, the worker first holds the handle and inserts the rod 203 through the connecting ear 202, aligns it with the ground, and then strikes the handle with a hammer to insert the rod 203 into the ground ≥200mm. To remove it, simply strike the handle in the opposite direction. The conical head and non-slip handle enable quick insertion and removal of the rod 203, improving the efficiency of device installation and disassembly.

[0047] In one embodiment of this utility model, the locking member 402 includes a wing bolt and a nut. The wing bolt passes through the through hole of the hinge rod 401 and is threadedly connected to the positioning hole 8 to realize the locking of the diagonal brace frame 2 and the support frame 1.

[0048] The wing bolt is made of 304 stainless steel (rust resistance ≥ 1000 hours salt spray test), with a thread precision of 6g and a clearance of ≤ 0.05mm between it and the positioning hole 8; the nut is a lock nut, with a lock torque ≥ 5N·m after tightening.

[0049] During operation, the worker first passes the wing bolt through the through hole of the hinge rod 401, screws it into the positioning hole 8, and tightens the nut to ensure that the hinge rod 401 tensions the diagonal brace frame 2 and the support frame 1. The wing bolt can be manually operated without tools to easily lock the relative positions of the two frames. The anti-loosening threaded connection ensures long-term stable locking of the limit component 4, adapting to outdoor vibration environments.

[0050] In one embodiment of this utility model, the dustproof net 3 is provided with a reinforcing edging, and fiberglass ribs are threaded through the reinforcing edging. The dustproof net 3 is made of high-density polyethylene.

[0051] The reinforcing edging is made of polyester (tensile strength ≥15kN / m) and is double-stitched with the dustproof mesh 3 (stitch spacing 5mm, stitch strength ≥8kN / m); the glass fiber reinforcement has a diameter of 5mm and a tensile strength ≥800MPa to ensure that there are no tears at the edges.

[0052] During operation, workers first slide the edge of the dustproof net 3 into the guide groove 103 and the slide 9, strengthening the contact between the edge and the groove wall to reduce wear. Fiberglass reinforcement prevents edge stretching and deformation. The HDPE material is resistant to acid and alkali corrosion, making it suitable for the dusty environment of the coal industry. By strengthening the edge and fiberglass reinforcement, the service life of the dustproof net 3 is extended, ensuring long-term dustproof performance.

[0053] Working principle:

[0054] Use in non-outdoor settings:

[0055] Place the square frame 101 of the support frame 1 in the area to be protected from dust (e.g., 1m in front of the exit of the transfer tunnel), ensuring that the guide groove 103 faces the direction of the dust source; align the four ground stakes 5 with the grooves 104 at the bottom of the square frame, and use a hammer to strike the ground stake retainer plate, so that the ground stakes are inserted into the ground to a depth of 300mm, the retainer plate fits against the groove 104, and the frame's levelness error is ≤1°. Then, flip the two diagonal bracing frames 2 downwards around the hinge point until the vertical rod of the U-shaped frame 201 forms a 60° angle with the ground; pass the insertion rod 203 through the through hole of the connecting ear 202, and use a hammer to strike the insertion rod 203, so that the insertion rod 203 is inserted into the ground to a depth of 200mm, ensuring that the diagonal bracing frame 2 does not wobble.

[0056] Slide the two sides of the dustproof net 3 into the guide groove 103 of the support frame 1 and the sliding groove 9 of the two diagonal bracing frames 2 respectively, and slowly push the dustproof net 3 downward until its bottom end is inserted into the positioning notch of the guide groove 103 and the sliding groove 9; rotate the stop block 6 at the top of each diagonal bracing frame 2 and the support frame 1 to press it tightly against the top of the dustproof net 3 to complete the installation.

[0057] Gently push the dustproof net 3 by hand to check for looseness; observe the frame connections for deformation to ensure the stability of the triangular structure; turn on the transfer equipment to test the dust blocking effect (measured with a dust detector, the PM10 concentration should start from an initial 50mg / m³). 3 Reduced to 8 mg / m 3 the following).

[0058] For use in open-air environments: Fix the support frame 1 in an open, dust-proof area (such as the windward side of a coal pile). After inserting the ground stake 5 into the ground, a reinforcing steel plate (with a contact area ≥ 100cm² with the ground) can be welded onto the baffle plate. 2 This enhances wind resistance.

[0059] Flip one of the diagonal bracing frames 2 (downwind side) downwards and insert the rod 203 into the ground for fixation; flip the other diagonal bracing frame 2 (upwind side) upwards until the U-shaped frame 201 forms a 60° angle with the square frame 101 of the support frame 1, at which point the top height of the diagonal bracing frame 2 reaches 2500mm.

[0060] Rotate the hinge rod 401 of the limiting component 4 so that it aligns with the positioning hole 8 of the windward side diagonal brace frame 2 and the support frame 1; pass the wing bolt of the locking component 402 through the through hole of the hinge rod 401, screw it into the positioning hole 8 and tighten it to ensure that the two frames do not rotate relative to each other; check the locking status by manually bending the diagonal brace frame 2, and there should be no obvious displacement.

[0061] The dustproof netting 3 slides into the guide groove 103 and the sliding groove 9 of the two diagonal bracing frames 2 on both sides (the sliding groove 9 of the upwind diagonal bracing faces upward), the bottom end is engaged with the positioning notch, and the top end is limited by the stop block 6, which is engaged with the clearance groove 7 of the support frame 1. In the middle of the U-shaped frame 201 of the open-air diagonal bracing frame 2, a windproof cable (Φ8mm stainless steel wire rope) is added. One end of the cable is fixed to the diagonal bracing frame 2, and the other end is fixed to the ground by a ground anchor (with the same structure as the ground stake 5), forming a secondary windproof support, which improves the wind resistance level to level 7 (wind speed ≤17.1m / s).

[0062] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A dust control device for the coal industry, characterized in that: Includes a support frame (1), with inclined bracing frames (2) hinged to both sides of the upper end of the support frame (1), and a limit component (4) is provided on both sides of one of the inclined bracing frames (2), the limit component (4) being used to lock the relative state of the support frame (1) and the inclined bracing frame (2). The support frame (1) is provided with a guide groove (103), and the inclined brace frame (2) is provided with a sliding groove (9). A dustproof net (3) is slidably provided in both the guide groove (103) and the sliding groove (9).

2. A dust control device for the coal industry according to claim 1, characterized in that: The support frame (1) includes a square frame (101), on which a plurality of crossbars (102) are provided, and the guide groove (103) passes through the square frame (101) and the crossbars (102); the lower end of the square frame (101) is provided with a plurality of grooves (104), and grounding rods (5) are provided in the grooves (104).

3. A dust control device for the coal industry according to claim 2, characterized in that: The diagonal bracing frame (2) includes a U-shaped frame (201) hinged to a square frame (101) of the support frame (1). The U-shaped frame (201) has several connecting ears (202) on the side closest to the ground, and a plug (203) is inserted into the connecting ear (202).

4. A dust control device for the coal industry according to claim 3, characterized in that: The limiting component (4) includes a hinge rod (401) hinged to the U-shaped frame (201), and a locking member (402) is provided at the end of the hinge rod (401); the square frame (101) of the support frame (1) and the remaining U-shaped frame (201) are provided with positioning holes (8), and the locking member (402) is inserted into the positioning hole (8).

5. A dust control device for the coal industry according to claim 4, characterized in that: The upper end of the U-shaped frame (201) of the diagonal bracing frame (2) is hinged with a stop block (6), which is used to restrict the dustproof net (3) from falling out of the slide groove (9); the top of the square frame (101) of the support frame (1) is provided with two clearance grooves (7), which are adapted to the stop block (6).

6. A dust control device for the coal industry according to claim 2, characterized in that: The ground anchor (5) includes a tapered rod and a circular baffle. The circular baffle fits into the groove (104), and the tapered rod is inserted into the ground to fix the support frame (1).

7. A dust control device for the coal industry according to claim 3, characterized in that: The lower end of the insertion rod (203) is tapered, and the upper end is provided with a circular handle. The insertion rod (203) passes through the connecting ear (202) and is inserted into the ground to fix the diagonal bracing frame (2).

8. A dust control device for the coal industry according to claim 4, characterized in that: The locking component (402) includes a wing bolt and a nut. The wing bolt passes through the through hole of the hinge rod (401) and is threadedly connected to the positioning hole (8) to lock the diagonal brace frame (2) and the support frame (1).

9. A dust control device for the coal industry according to claim 1, characterized in that: The dustproof net (3) has a reinforced edging, and fiberglass ribs are threaded through the reinforced edging. The dustproof net (3) is made of high-density polyethylene.

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