Dust suppression device for open pit coal mining

Abstract

The utility model relates to the technical field of dust suppression devices, in particular to a dust suppression device for open pit coal mining, which comprises a movable bottom box, a bearing plate is fixedly mounted at the top of the movable bottom box through bolts, and a support frame is fixedly connected to the top surface of the bearing plate. Compared with the prior art, the air duct has the advantages that dust in air can be blocked through the dustproof net, external dust is prevented from entering the air duct body, the amount of dust accumulated on the air duct body can be reduced through the arrangement of the dustproof net, and when more dust is accumulated on the dustproof net, the threaded column is rotated relative to the L-shaped support by twisting the threaded column, so that the dust is prevented from entering the air duct body. The lifting plate can be driven to move upwards through thread transmission, locking of the protective net can be relieved until a clamping pin completely moves out of a clamping hole, at the moment, the protective net is pulled outwards to rotate around a connecting rod, and after the protective net rotates to a proper angle, an assembly ring can be exposed and pulled out of a sleeve; and dust on the dustproof net can be conveniently cleaned.

Description

Technical Field

[0001] This utility model relates to the field of dust suppression devices, and in particular to a dust suppression device for open-pit coal mining. Background Technology

[0002] Dust suppression devices in open-pit coal mining play a crucial role in modern mining operations. The core purpose of these devices is to effectively reduce dust pollution generated during open-pit coal mining, protect the surrounding environment, safeguard worker health, and ensure the safety and efficiency of mining operations. Among various dust suppression devices, mist cannons have become one of the most widely used equipment due to their unique advantages. Specifically, a mist cannon is a device that atomizes water into tiny droplets using a high-pressure jet, and then uses a fan to blow these droplets into the air. Its working principle is based on a combination of aerodynamics and water atomization. When a water pump draws water from a water source and delivers it through pipelines to the nozzle of the mist cannon, the high-pressure jet atomizes the water into tiny droplets, forming a fine water mist. Subsequently, the fan blows this water mist into the air, where it comes into contact with airborne dust particles. Through adsorption and capture, the dust particles are moistened and caused to settle, thus achieving the dust suppression effect.

[0003] Fog cannons can draw outside air into the duct and discharge it from the output end of the duct. They can also disperse the water flow at the output end of the duct. When outside air enters from the back of the duct, it easily brings outside dust into the inner wall of the duct. Dust accumulates on the inner wall of the duct and is difficult to clean. This not only affects the dust suppression effect of the fog cannon, but may also hinder the normal operation of the equipment. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a dust suppression device for open-pit coal mining, so as to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a dust suppression device for open-pit coal mining, comprising a movable base box, a bearing plate fixedly mounted on the top of the movable base box by bolts, a support frame fixedly connected to the top surface of the bearing plate, a wind tunnel body rotatably connected to the inside of the support frame via bearings, a hydraulic cylinder rotatably connected to the top surface of the bearing plate, the output end of the hydraulic cylinder rotatably connected to the wind tunnel body, a fan fixedly mounted on the inner wall of the wind tunnel body, a sleeve fixedly connected to the back of the wind tunnel body by bolts, a blocking ring fixedly connected to the inner wall of the sleeve, and a sliding joint on the inner wall of the sleeve. The sleeve is connected to an assembly ring, and a dustproof net is fixedly connected to the inner wall of the assembly ring. The dustproof net corresponds to the fan. The side of the assembly ring near the fan is in contact with a blocking ring. A connecting rod is fixedly connected to the outer surface of the sleeve. A protective net is rotatably connected to the outer surface of the connecting rod. The side of the protective net near the fan is in contact with the assembly ring. An L-shaped bracket is fixedly connected to the top of the protective net. A threaded column is threadedly connected to the top of the L-shaped bracket. A lifting plate is rotatably connected to the bottom of the threaded column through a bearing. Two symmetrically arranged locking pins are fixedly connected to the bottom of the lifting plate. Both locking pins are engaged with the sleeve.

[0007] Preferably, in any of the above embodiments, the output end of the air duct body is fixedly connected to an external threaded pipe, and the outer surface of the external threaded pipe is threaded with a sealing cap, the sealing cap being made of polyethylene.

[0008] Preferably, in any of the above embodiments, an annular water spray pipe is fixedly connected to the inside of the externally threaded pipe by bolts, and an adapter pipe is fixedly connected to the bottom of the annular water spray pipe. The adapter pipe is connected to the output end of an external water pump through a rubber hose.

[0009] Preferably, one side of the protective net has a through-hole, and the protective net is rotatably connected to the connecting rod through the through-hole.

[0010] Preferably, in any of the above schemes, the assembly ring is fixedly connected to a plurality of circumferentially arrayed positioning pins on the side near the wind turbine, and the assembly ring is engaged with the blocking ring by the positioning pins.

[0011] Preferably, in any of the above embodiments, the outer surface of the sleeve has two symmetrically arranged locking holes, and both locking pins are engaged with the sleeve through the locking holes.

[0012] Preferably, in any of the above solutions, the top of the lifting plate is fixedly connected to two symmetrically arranged guide rods, and both guide rods are slidably connected to the L-shaped bracket.

[0013] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0014] 1. When the fan draws outside air into the main body of the duct, the dustproof net can block dust in the air, preventing it from entering the duct body. The dustproof net reduces the amount of dust accumulated in the duct body. When a lot of dust accumulates on the dustproof net, the operator can twist the threaded column to rotate it relative to the L-shaped bracket. Through the threaded transmission, the lifting plate can be moved upward until the locking pin is completely moved out of the locking hole, which can release the locking of the protective net. At this time, pull the protective net outward to make it rotate around the connecting rod until the protective net rotates to a suitable angle, which can expose the assembly ring and pull it out of the sleeve to facilitate cleaning the dust on the dustproof net.

[0015] 2. After the dust suppression operation is completed, align the sealing cap with the external threaded pipe and twist it. Through the thread drive, the sealing cap can be screwed onto the external threaded pipe, which can block the output end of the air duct body and prevent dust from entering from the output end of the air duct body when the dust suppression device is not working, thus further improving the dust prevention effect of the dust suppression device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the assembly of this utility model;

[0017] Figure 2 This is a first exploded structural diagram of the assembly of this utility model;

[0018] Figure 3 This is a second exploded structural diagram of the assembly of this utility model;

[0019] Figure 4 This is a first-view structural diagram of the main body of the ventilation duct of this utility model;

[0020] Figure 5 This is a second-view structural diagram of the main body of the air duct of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the protective net of this utility model.

[0022] In the diagram: 1-Mobile base box, 2-Bearing plate, 3-Support frame, 4-Air duct body, 5-Hydraulic cylinder, 6-Fan, 8-Sleeve, 9-Blocking ring, 10-Assembly ring, 11-Dustproof net, 12-Connecting rod, 13-Protective net, 14-L-shaped bracket, 15-Threaded column, 16-Lifting plate, 17-Clamping pin, 18-External threaded pipe, 19-Sealing cover, 20-Annular spray pipe, 21-Transfer pipe, 22-Rotating hole, 23-Positioning pin, 24-Clamping hole, 25-Guide rod. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0024] like Figures 1 to 6 As shown, a dust suppression device for open-pit coal mining includes a movable base box 1. A bearing plate 2 is bolted to the top of the movable base box 1. A support frame 3 is fixedly connected to the top surface of the bearing plate 2. A duct body 4 is rotatably connected to the inside of the support frame 3 via bearings. A hydraulic cylinder 5 is rotatably connected to the top surface of the bearing plate 2. The output end of the hydraulic cylinder 5 is rotatably connected to the duct body 4. A fan 6 is fixedly installed on the inner wall of the duct body 4. A sleeve 8 is bolted to the back of the duct body 4. A blocking ring 9 is fixedly connected to the inner wall of the sleeve 8. An assembly ring 10 is slidably connected to the inner wall of the sleeve 8. The inner wall of the assembly ring 10 is fixed... A dustproof net 11 is connected, which corresponds to the fan 6. The side of the assembly ring 10 near the fan 6 is in contact with the blocking ring 9. A connecting rod 12 is fixedly connected to the outer surface of the sleeve 8. A protective net 13 is rotatably connected to the outer surface of the connecting rod 12. The side of the protective net 13 near the fan 6 is in contact with the assembly ring 10. An L-shaped bracket 14 is fixedly connected to the top of the protective net 13. A threaded post 15 is threadedly connected to the top of the L-shaped bracket 14. A lifting plate 16 is rotatably connected to the bottom of the threaded post 15 through a bearing. Two symmetrically arranged locking pins 17 are fixedly connected to the bottom of the lifting plate 16. Both locking pins 17 are engaged with the sleeve 8.

[0025] As an optional technical solution of this utility model, the output end of the air duct body 4 is fixedly connected to an external threaded pipe 18, and the outer surface of the external threaded pipe 18 is threadedly connected to a sealing cap 19. The sealing cap 19 is made of polyethylene. The external threaded pipe 18 and the sealing cap 19 are threadedly connected to ensure the sealing of the output end of the air duct body 4 and prevent dust and moisture from entering.

[0026] As an optional technical solution of this utility model, an annular water spray pipe 20 is fixedly connected to the inside of the external threaded pipe 18 by bolts. An adapter pipe 21 is fixedly connected to the bottom of the annular water spray pipe 20. The adapter pipe 21 is connected to the output end of an external water pump through a rubber hose. The annular water spray pipe 20 is fixed inside the external threaded pipe 18 by bolts. The adapter pipe 21 is connected to the rubber hose to ensure the stability and flexibility of the water spray system.

[0027] As an optional technical solution of this utility model, a rotating hole 22 is provided through one side of the protective net 13. The protective net 13 is rotatably connected to the connecting rod 12 through the rotating hole 22. The rotating hole 22 is provided through one side of the protective net 13, and the connecting rod 12 is rotatably connected to the protective net 13 through the rotating hole 22, so as to ensure the flexible adjustment of the protective net 13.

[0028] As an optional technical solution of this utility model, a plurality of circumferentially arrayed positioning pins 23 are fixedly connected to the side of the assembly ring 10 near the fan 6. The assembly ring 10 is engaged with the blocking ring 9 through the positioning pins 23. The circumferential array of positioning pins 23 is fixed on the side of the assembly ring 10 near the fan 6 and is connected to the blocking ring 9 through the snap-fit ​​method to ensure the stable installation of the assembly ring 10.

[0029] As an optional technical solution of this utility model, two symmetrically arranged locking holes 24 are provided on the outer surface of the sleeve 8. Both locking pins 17 are engaged with the sleeve 8 through the locking holes 24. The locking holes 24 are symmetrically arranged on the outer surface of the sleeve 8. The locking pins 17 are engaged with the sleeve 8 through the locking holes 24 to ensure the stable fixation of the sleeve 8.

[0030] As an optional technical solution of this utility model, the top of the lifting plate 16 is fixedly connected with two symmetrically arranged guide rods 25. Both guide rods 25 are slidably connected to the L-shaped bracket 14. The guide rods 25 are symmetrically fixed to the top of the lifting plate 16 and slidably connected to the L-shaped bracket 14 to ensure the smooth movement of the lifting plate 16.

[0031] A dust suppression device for open-pit coal mining operates on the following principle:

[0032] 1): When the fan 6 draws outside air into the air duct body 4, the dustproof net 11 can block the dust in the air and prevent outside dust from entering the air duct body 4. The dustproof net 11 can reduce the amount of dust accumulated in the air duct body 4.

[0033] 2): Twist the threaded column 15 to make it rotate relative to the L-shaped bracket 14. Through the threaded transmission, the lifting plate 16 can be driven to move upward until the locking pin 17 moves out of the locking hole 24, which can release the lock on the protective net 13.

[0034] 3): Pull the protective net 13 outward to make it rotate around the connecting rod 12 until the protective net 13 rotates to a suitable angle, so that the assembly ring 10 can be exposed and pulled out of the sleeve 8, so as to clean the dust on the dustproof net 11.

[0035] In summary, the dust suppression device for this open-pit coal mine, when the blower 6 draws outside air into the main body 4 of the ventilation duct, can block dust in the air through the dustproof net 11, preventing outside dust from entering the main body 4. The dustproof net 11 reduces the amount of dust accumulated on the main body 4. When a large amount of dust accumulates on the dustproof net 11, the operator can twist the threaded column 15 to rotate it relative to the L-shaped bracket 14. Through the threaded transmission, the lifting plate 16 can be moved upward until the locking pin 17 is completely moved out of the locking hole 24, at which point the protective net 13 can be released. Locked, the protective net 13 is pulled outward to rotate around the connecting rod 12 until the protective net 13 rotates to a suitable angle, so that the assembly ring 10 can be exposed and pulled out from the sleeve 8 to facilitate cleaning of the dust on the dustproof net 11. After the dust suppression operation is completed, the sealing cover 19 is aligned with the external threaded pipe 18 and twisted. Through the thread drive, the sealing cover 19 can be screwed onto the external threaded pipe 18, which can seal the output end of the air duct body 4, preventing dust from entering from the output end of the air duct body 4 when the dust suppression device is not working, and further improving the dust suppression effect of the dust suppression device.

Claims

1. A dust suppression apparatus for open cut coal mining, characterised in that: The utility model provides mobile bottom case (1), the top of mobile bottom case (1) is fixedly installed with the bearing plate (2) through bolt, the top surface of bearing plate (2) is fixedly connected with support frame (3), the inside of support frame (3) is rotatably connected with the wind cylinder main part (4), the top surface of bearing plate (2) is rotatably connected with hydraulic cylinder (5), the output of hydraulic cylinder (5) is rotatably connected with wind cylinder main part (4), the inner wall of wind cylinder main part (4) is fixedly installed with fan (6), the back of wind cylinder main part (4) is fixedly connected with sleeve (8) through bolt, the inner wall of sleeve (8) is fixedly connected with blocking ring (9), the inner wall of sleeve (8) is slidably connected with assembly ring (10), the inner wall of assembly ring (10) is fixedly connected with dust screen (11), dust screen (11) corresponds with fan (6), the side of assembly ring (10) close to fan (6) is attached with blocking ring (9), the outer surface of sleeve (8) is fixedly connected with connecting rod (12), the outer surface of connecting rod (12) is rotatably connected with protective screen (13), the side of protective screen (13) close to fan (6) is attached with assembly ring (10), the top of protective screen (13) is fixedly connected with L type support (14), the top of L type support (14) is threadedly connected with threaded column (15), the bottom of threaded column (15) is rotatably connected with lifting plate (16) through bearing, the bottom of lifting plate (16) is fixedly connected with two symmetrically arranged clamping pins (17), and two clamping pins (17) are clamped with sleeve (8).

2. A dust suppression apparatus for open cut coal mining according to claim 1, characterised in that: The output end of the wind cylinder main part (4) is fixedly connected with an external threaded pipe (18), the outer surface of the external threaded pipe (18) is threadedly connected with a sealing cover (19), and the sealing cover (19) is made of polyethylene.

3. A dust suppression apparatus for open cut coal mining according to claim 2, characterised in that: The inside of the external threaded pipe (18) is fixedly connected with an annular water spraying pipe (20) through bolts, the bottom of the annular water spraying pipe (20) is fixedly connected with an adapter pipe (21), and the adapter pipe (21) is connected with an external water pump output end through a rubber hose.

4. A dust suppression apparatus for open cut coal mining according to claim 3, characterised in that: A rotating hole (22) is formed in one side of the protective screen (13), and the protective screen (13) is rotatably connected with the connecting rod (12) through the rotating hole (22).

5. A dust suppression apparatus for open cut coal mining according to claim 4, characterised in that: A plurality of circumferential array positioning pins (23) are fixedly connected to one side of the assembly ring (10) close to the fan (6), and the assembly ring (10) is clamped with the blocking ring (9) through the positioning pins (23).

6. A dust suppression apparatus for open cut coal mining according to claim 5 wherein: The outer surface of the sleeve (8) is provided with two symmetrically arranged clamping holes (24), and the two clamping pins (17) are clamped with the sleeve (8) through the clamping holes (24).

7. A dust suppression apparatus for open cut coal mining according to claim 6, characterised in that: Two symmetrically arranged guide rods (25) are fixedly connected to the top of the lifting plate (16), and the two guide rods (25) are slidably connected with the L-shaped support (14).

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