A mining dust extraction device

Abstract

The utility model discloses a kind of mining dust removal devices, including water curtain, still including Venturi tube being set between two water curtains, the inlet end of the Venturi tube is connected with compressed air source, the throat of the Venturi tube is connected with dust hood, the outlet end of the Venturi tube is connected with centrifuge cylinder, the axis of the centrifuge cylinder is arranged along horizontal direction, the below of the outlet end of the centrifuge cylinder is connected with dust collector, the above of the outlet end of the centrifuge cylinder is connected with dust exhaust hood, the dust exhaust hood is towards water curtain.The utility model is based on the water curtain structure of prior art, add Venturi tube, dust hood, centrifuge cylinder, dust collector and dust exhaust hood and the like structure, now the large particle in dust is separated out using centrifugal force and is collected in dust collector, fine particle dust is settled using water curtain again, since large particle dust has been removed in advance, only a small amount of water is used for the settlement of fine particle dust, both can improve the effect of dust removal, and can save water.

Description

Technical Field

[0001] This utility model relates to a dust removal device for mining, belonging to the field of mining technology. Background Technology

[0002] During the excavation of coal mine roadways, dust in the roadways poses a significant health hazard to underground workers and can even cause explosions. Therefore, it is necessary to remove dust from the inside of coal mine roadways.

[0003] Chinese utility model patent CN223398719U discloses a novel full-section water curtain device for tunnels, comprising an iron mesh fixed to the tunnel cross-section and matching the shape of the tunnel cross-section, with a layer of dustproof netting wrapped around both sides of the iron mesh, and an arched sprinkler pipe fixed at the top of the tunnel between the two layers of dustproof netting, with one or more nozzles connected to the sprinkler pipe, the spraying direction of the nozzles facing the dustproof netting; a gap is provided at the bottom of the iron mesh to allow the conveyor belt to pass through, and a small door is provided at the bottom of the iron mesh on one side of the conveyor belt for workers to pass through.

[0004] The aforementioned patent achieves dust reduction inside the tunnel by setting up a full-section water curtain in the tunnel.

[0005] However, the above-mentioned patents also have the following problems: by directly spraying water mist to achieve sedimentation through contact with dust, conventional atomized particles are relatively large and the contact area with dust is limited, resulting in low water resource utilization and easy waste of water resources. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a mining dust removal device to solve the technical problems existing in the prior art.

[0007] The technical solution adopted by this utility model is as follows: a mining dust removal device, including a water curtain and a venturi tube disposed between two water curtains. The inlet end of the venturi tube is connected to a compressed air source, the throat of the venturi tube is connected to a dust suction hood, the outlet end of the venturi tube is connected to a centrifuge cylinder, the axis of the centrifuge cylinder is arranged in a horizontal direction, a dust collector is connected below the outlet end of the centrifuge cylinder, and a dust discharge hood is connected above the outlet end of the centrifuge cylinder, the dust discharge hood facing the water curtain.

[0008] Preferably, the dust hood is arranged vertically downwards.

[0009] Preferably, a spiral blade is rotatably connected inside the centrifuge cylinder, the spiral blade is driven by a motor, the lower end of the centrifuge cylinder is inclined towards the outlet end, a first valve is provided between the centrifuge cylinder and the dust collector, a second valve is provided at the outlet end of the dust collector, and a third valve is provided between the centrifuge cylinder and the dust exhaust hood.

[0010] Preferably, the outlet end of the dust exhaust hood is elongated, and the length extension direction of the dust exhaust hood is parallel to the width direction of the alley.

[0011] Preferably, the inlet end of the dust hood is elongated, and the length of the dust hood extends parallel to the width of the alleyway.

[0012] Preferably, the dust hood is located at the top of the tunnel.

[0013] Preferably, the dust collection hood is located in the middle of the alleyway.

[0014] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model adds a Venturi tube, a dust suction hood, a centrifuge cylinder, a dust collector, and a dust exhaust hood to the existing water curtain structure. Now, large particles in the dust are separated by centrifugal force and collected in the dust collector. Then, the fine dust particles are settled by the water curtain. Since the large dust particles have been removed in advance, only a small amount of water is needed for the settling of fine dust particles, which can improve the dust removal effect and save water. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] The reference numerals in the accompanying drawings include: 1. Channel; 2. Water curtain; 3. Dust hood; 4. Dust suction pipe; 5. Venturi tube; 6. Connecting pipe; 7. Motor; 8. Centrifuge cylinder; 9. Spiral blade; 10. First valve; 11. Dust collector; 12. Second valve; 13. Third valve; 14. Dust discharge pipe; 15. Dust discharge hood. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] Example 1:

[0019] A dust removal device for mining, such as Figure 1As shown, the system includes a water curtain 2, the structure of which is existing, and the structure of the water curtain 2 adopts the structure in Chinese utility model patent with authorization announcement number CN223398719U; in this embodiment, it also includes a Venturi tube 5 disposed between the two water curtains 2. The axis of the Venturi tube 5 is arranged horizontally, and the inlet end of the Venturi tube 5 is connected to a compressed air source, which can be the compressed air from the ventilation system inside the mine. The throat of the Venturi tube 5 is connected to a dust suction hood 3 through a dust suction pipe 4. The dust suction hood 3 is located in the middle of the tunnel 1 and is arranged vertically downward. The inlet end of the dust suction hood 3 is elongated, and the length extension direction of the dust suction hood 3 is parallel to the width direction of the tunnel 1. The outlet end of the Venturi tube 5 is connected to a centrifuge cylinder 8 through a connecting pipe 6. The centrifuge cylinder 8 is a complete annular cylinder with the wedge-shaped part at the bottom cut off. Figure 1 The centrifuge cylinder 8 is formed by sealing the bottom and both sides (the dotted part in the middle), so that the lower end of the centrifuge cylinder 8 is tilted to the left for easy discharge. The axis of the centrifuge cylinder 8 (i.e., the axis of the complete circular cylinder) is arranged in the horizontal direction. The centrifuge cylinder 8 is connected to a spiral blade 9, which is driven by a motor 7. The motor 7 is fixed on the right end of the centrifuge cylinder 8. A dust collector 11 is connected to the lower left end of the centrifuge cylinder 8. A first valve 10 is set between the centrifuge cylinder 8 and the dust collector 11. A second valve 12 is set at the outlet end of the dust collector 11. A dust hood 15 is connected above the outlet end of the centrifuge cylinder 8 through a dust discharge pipe 14. The dust hood 15 faces the water curtain 2. The outlet end of the dust hood 15 is long and narrow. The length of the dust hood 15 is parallel to the width of the tunnel 1. The dust hood 15 is located at the top of the tunnel 1. A third valve 13 is set between the centrifuge cylinder 8 and the dust hood 15.

[0020] While the water curtain 2 is opened, compressed air is introduced into the inlet of the venturi tube 5. Negative pressure is generated at the throat of the venturi tube 5. The dust suction hood 3 sucks in the dust-laden gas inside the tunnel 1 and enters the centrifuge tube 8. The motor 7 is started, and the motor 7 drives the spiral blades 9 to rotate, generating centrifugal force. Under the action of centrifugal force, large dust particles are located on the outer periphery inside the centrifuge tube 8 and enter the dust collector 11 along the inner wall of the centrifuge tube 8. Fine dust particles are discharged with the gas through the dust discharge pipe 14 and the dust discharge hood 15 and come into contact with the water curtain 2, settling together with the water. Since the large dust particles have been removed in advance, only a small amount of water is needed for the settling of fine dust particles, which can improve the dust removal effect and save water.

[0021] When the dust collector 11 is full of dust, close the third valve 13 and open the first valve 10 and the second valve 12 to discharge the dust from the dust collector 11. A small amount of air is introduced through the venturi tube 5 to help the dust collector 11 discharge dust. After the dust discharge is completed, close the second valve 12 and then open the third valve 13.

[0022] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A dust removal device for mining, comprising a water curtain, characterized in that: It also includes a venturi tube installed between two water curtains. The inlet end of the venturi tube is connected to a compressed air source, the throat end of the venturi tube is connected to a dust suction hood, the outlet end of the venturi tube is connected to a centrifuge cylinder, the axis of the centrifuge cylinder is arranged in a horizontal direction, a dust collector is connected below the outlet end of the centrifuge cylinder, and a dust exhaust hood is connected above the outlet end of the centrifuge cylinder, with the dust exhaust hood facing the water curtain.

2. The mining dust removal device according to claim 1, characterized in that: The dust hood is arranged vertically downwards.

3. A mining dust removal device according to claim 1, characterized in that: The centrifuge drum is internally connected to a spiral blade driven by a motor. The lower end of the centrifuge drum is inclined towards the outlet end. A first valve is provided between the centrifuge drum and the dust collector. A second valve is provided at the outlet end of the dust collector. A third valve is provided between the centrifuge drum and the dust exhaust hood.

4. A mining dust removal device according to claim 1, characterized in that: The outlet end of the dust exhaust hood is elongated, and the length of the dust exhaust hood extends parallel to the width of the roadway.

5. A mining dust removal device according to claim 1, characterized in that: The inlet end of the dust hood is elongated, and the length of the dust hood extends parallel to the width of the alleyway.

6. A mining dust removal device according to claim 1, characterized in that: The dust hood is located at the top of the tunnel.

7. A mining dust removal device according to claim 1, characterized in that: The dust extraction hood is located in the middle of the alleyway.

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