A negative pressure type spray dust removal and gangue blocking and dust collecting device for mine

Abstract

The application provides a mine negative pressure type spray dust removal and gangue blocking and dust collecting device, two outer plates are fixed on the inner side surfaces of the top plates of two adjacent hydraulic supports and are symmetrically arranged, positioning inner grooves are formed in the left and right side walls of a bottom plate dust collecting groove, positioning protrusions are arranged on the sides of the two outer plates which are close to each other, the positioning protrusions are connected with the positioning inner grooves on the same side, the two outer plates can move up and down or front and back along the positioning inner grooves, the up and down width of the positioning inner grooves matches the up and down displacement distance when the hydraulic support moves once, the front and back length of the positioning inner grooves is not less than the front and back displacement distance when the hydraulic support moves once, a negative pressure fan is arranged in the bottom plate dust collecting groove, a plurality of solid cone nozzles are embedded in the left and right side walls of the bottom plate dust collecting groove, and the water inlets of the solid cone nozzles are connected with water supply pipes. The application is simple in installation, water and energy saving, and can prevent and reduce dust when the hydraulic support moves.

Description

Technical Field

[0001] This invention relates to the field of dust suppression technology in mines, and in particular to a negative pressure spray dust suppression and gangue collection device for mines. Background Technology

[0002] With increasingly stringent safety requirements in the coal mining industry, the environmental quality within mines is receiving greater attention. The longwall face is a primary source of dust, with dust from the moving frame becoming increasingly severe as the mining height increases. As the dust settles downwards towards the floor, it is affected by airflow within the roadway, resulting in shearing action and large-scale dust dispersion, forming high-concentration dust belts that seriously endanger the health of workers and cause equipment wear. Existing dust suppression equipment for moving frame work is mostly large-scale, covering spray devices that create a mist through nozzles. However, because these devices treat the entire working face rather than targeting the primary dust-generating areas, they result in significant waste. Furthermore, the large amount of water sprayed onto the equipment at the working face also accelerates corrosion. Summary of the Invention

[0003] In view of the problems existing in the prior art, the present invention aims to provide a mining negative pressure spray dust suppression and gangue collection device that is easy to install, saves water and energy, and has high efficiency in dust reduction, so as to carry out dust prevention and dust reduction treatment when the hydraulic support is moved.

[0004] This invention proposes a negative pressure spray dust suppression and gangue collection device for mining, comprising a bottom plate dust collection groove and two outer plates. The top contour lines of the two outer plates match the inner side contour lines of the top plate of the hydraulic support. The two outer plates are fixedly mounted on the inner side of the top plates of two adjacent hydraulic supports and are arranged symmetrically from left to right. The bottom plate dust collection groove is a U-shaped groove structure. Positioning inner grooves are provided on both the left and right side walls of the bottom plate dust collection groove. Positioning protrusions are provided on the side of the two outer plates that are close to each other. Each positioning protrusion is connected to the positioning inner groove on the same side, so that the bottom plate dust collection groove and the two outer plates are hooked together. Both outer plates can move up and down or back and forth along the positioning inner groove. The bottom plate dust collection groove is limited to the left and right sides between the two outer plates. The vertical width of the positioning inner groove matches the vertical displacement distance of the hydraulic support during one frame movement. The front and back length of the positioning inner groove is not less than the front and back displacement distance of the hydraulic support during one frame movement. When the outer plates move along the positioning inner groove, they can always cover the side of the bottom plate dust collection groove.

[0005] The dust collection trough of the base plate is equipped with a negative pressure fan. Several solid conical nozzles are embedded through the left and right side walls of the dust collection trough. The water outlet of the solid conical nozzle is located inside the dust collection trough, and the water inlet of the solid conical nozzle is located outside the dust collection trough. Water supply pipes are provided on the left and right side walls of the dust collection trough, and the water inlet of each solid conical nozzle is connected to the water supply pipe.

[0006] In the above scheme: the upper ends of the two outer plates are enclosed by a top retaining net. The two front corners of the top retaining net are fixed to the corresponding hydraulic supports via front hanging chains, and the two rear corners are fixed to the corresponding hydraulic supports via rear hanging chains. The front hanging chains are shorter than the rear hanging chains, resulting in the top retaining net being inclined with a higher front end and a lower rear end. The top retaining net protects the device, and the higher front and lower rear setting ensures that large rocks fall along the top retaining net to the rear goaf area. Furthermore, the use of hanging chains to connect to the outer plates does not affect the relative movement between the two outer plates.

[0007] In the above scheme: two positioning inner grooves are provided on the left and right side walls of the dust collection groove of the bottom plate. The two positioning inner grooves are spaced apart. Two positioning protrusions are provided on the side of the two outer plates that are close to each other. The two positioning protrusions correspond one-to-one with the two positioning inner grooves on the same side. The four positioning protrusions are connected one-to-one with the four positioning inner grooves, so that the upper end of the dust collection groove of the bottom plate is hooked to the lower end of the two outer plates.

[0008] In the above scheme: the negative pressure fan adopts a water-powered motor, and the water-powered motor is supplied with water by a water supply pipe.

[0009] In the above scheme: the positioning inner groove is a rectangular groove or a strip groove.

[0010] In the above scheme: the negative pressure fan is set at the front end of the bottom plate dust collection trough, and the front port of the bottom plate dust collection trough is closed by the fan block net. The negative pressure fan is used to absorb the dust that cannot be covered by the block net dust collection device in front. The fan block net is used to ensure the safe operation of the negative pressure fan.

[0011] The beneficial effects of this invention are as follows: 1. Adjacent hydraulic supports are usually arranged side by side. When moving the supports, one hydraulic support lowers first and then moves forward to raise, then the other support lowers and moves forward to raise, and finally the two hydraulic supports return to a side-by-side state. Since the outer plate and the dust collection groove of the bottom plate form a hanging structure, each outer plate can move with the corresponding hydraulic support. The width and length of the positioning inner groove match the displacement generated by the movement of the hydraulic support, so that the dust collection groove of the bottom plate is not affected by the movement of the outer plate. When the outer plate moves along the positioning inner groove, it can always cover the side of the dust collection groove of the bottom plate. That is, the two outer plates can still wrap the dust collection groove of the bottom plate when the extreme displacement (when the hydraulic support lowers first and then moves forward to the position) occurs, thereby achieving a sealed dustproof effect. 2. The installation of a negative pressure device and a spray device in the device can improve its dust removal efficiency. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present invention.

[0013] Figure 2 This is a schematic diagram of a negative pressure fan.

[0014] Figure 3 This is a schematic diagram of the assembly of the present invention with the hydraulic support (without moving the support).

[0015] Figure 4 yes Figure 3 A schematic diagram of the hydraulic support after it has been lowered.

[0016] Figure 5 yes Figure 4 Perspective view of the present invention.

[0017] Figure 6 yes Figure 3 A schematic diagram of the completed relocation of the hydraulic support.

[0018] Figure 7 yes Figure 6 Perspective view of the present invention. Detailed Implementation

[0019] like Figure 1 As shown in Figure 7, a mining negative pressure spray dust suppression and gangue collection device mainly consists of a bottom plate dust collection trough 2 and two outer plates 1.

[0020] The top outline of the two outer plates 1 matches the inner side outline of the top plate of the hydraulic support 3. The two outer plates 1 are fixed on the inner side of the top plate of the two adjacent hydraulic supports 3, and are arranged symmetrically on the left and right.

[0021] The bottom plate dust collection groove 2 is a U-shaped groove structure. Positioning inner grooves 4 are provided on the left and right side walls of the bottom plate dust collection groove 2. Positioning protrusions 5 are provided on the side of the two outer plates 1 that are close to each other. Each positioning protrusion 5 is connected to the positioning inner groove 4 on the same side, so that the bottom plate dust collection groove 2 and the two outer plates 1 are hooked together. Both outer plates 1 can move up and down or back and forth along the positioning inner groove 4. The bottom plate dust collection groove 2 is limited to the left and right sides between the two outer plates 1.

[0022] The vertical width of the positioning inner groove 4 matches the vertical displacement distance of the hydraulic support 3 during one frame movement. The front and rear length of the positioning inner groove 4 is not less than the front and rear displacement distance of the hydraulic support 3 during one frame movement. When the outer plate 1 moves along the positioning inner groove 4, it can always cover the side of the bottom plate dust collection groove 2.

[0023] The dust collection trough 2 of the base plate is equipped with a negative pressure fan 6. Several solid conical nozzles 7 are embedded through the left and right side walls of the dust collection trough 2. The outlet of the solid conical nozzle 7 is located inside the dust collection trough 2 of the base plate, and the inlet of the solid conical nozzle 7 is located outside the dust collection trough 2 of the base plate. Water supply pipes 8 are provided on the left and right side walls of the dust collection trough 2 of the base plate, and the inlet of each solid conical nozzle 7 is connected to the water supply pipe 8.

[0024] Ideally, the upper ends of the two outer plates 1 are enclosed by a top retaining mesh 9. The two front corners of the top retaining mesh 9 are fixed to the corresponding hydraulic supports 3 via front hanging chains 10, and the two rear corners of the top retaining mesh 9 are fixed to the corresponding hydraulic supports 3 via rear hanging chains 11. The front hanging chains 10 are shorter than the rear hanging chains 11, so that the top retaining mesh 9 is inclined with the front end higher and the rear end lower. The top retaining mesh 9 can protect the device, and the front-high, rear-low setting can ensure that large rocks fall along the top retaining mesh 9 to the goaf behind. Moreover, the use of hanging chains to connect with the outer plates 1 does not affect the relative movement between the two outer plates 1.

[0025] Ideally, two positioning inner grooves 4 are provided on the left and right side walls of the dust collection groove 2 of the bottom plate, and the two positioning inner grooves 4 are spaced apart. Two positioning protrusions 5 are provided on the side of the two outer plates 1 that are close to each other. The two positioning protrusions 5 correspond one-to-one with the two positioning inner grooves 4 on the same side. The four positioning protrusions 5 are connected one-to-one with the four positioning inner grooves 4, so that the upper end of the dust collection groove 2 of the bottom plate is hooked to the lower end of the two outer plates 1.

[0026] Ideally, the negative pressure fan 6 should use a water-powered motor, which is supplied with water by the water supply pipe 8.

[0027] Ideally, the positioning inner groove 4 should be a rectangular groove or a strip groove.

[0028] Ideally, the negative pressure fan 6 is located inside the front end of the dust collection trough 2 on the bottom plate, and the front port of the dust collection trough 2 on the bottom plate is closed by the fan dust baffle 12. The negative pressure fan 6 is used to absorb the dust that cannot be covered by the dust collection device in front, and the fan dust baffle 12 is used to ensure the safe operation of the negative pressure fan 6.

Claims

1. A negative pressure type spray dust removal and stone blocking dust collection device for mines, comprising a bottom plate dust collection groove (2) and two outer plates (1), characterized in that: The top outline of the two outer plates (1) matches the outline of the inner side of the top plate of the hydraulic support (3). The two outer plates (1) are fixed on the inner side of the top plate of the two adjacent hydraulic supports (3) and are arranged symmetrically on the left and right. The bottom plate dust collection groove (2) is a groove structure with a U-shaped cross section. The left and right side walls of the bottom plate dust collection groove (2) are provided with positioning inner grooves (4). The two outer plates (1) are provided with positioning protrusions (5) on the side that is close to each other. Each positioning protrusion (5) is connected to the positioning inner groove (4) on the same side, so that the bottom plate dust collection groove ( 2) It is connected to the two outer plates (1), and both outer plates (1) can move up and down or back and forth along the positioning inner groove (4). The bottom plate dust collection groove (2) is limited to the left and right between the two outer plates (1). The upper and lower width of the positioning inner groove (4) matches the upper and lower displacement distance of the hydraulic support (3) when it moves once. The front and back length of the positioning inner groove (4) is not less than the front and back displacement distance of the hydraulic support (3) when it moves once. When the outer plate (1) moves along the positioning inner groove (4), it can always cover the side of the bottom plate dust collection groove (2). The bottom plate dust collection groove (2) is equipped with a negative pressure fan (6). Several solid conical nozzles (7) are embedded through the left and right side walls of the bottom plate dust collection groove (2). The outlet of the solid conical nozzle (7) is located inside the bottom plate dust collection groove (2), and the inlet of the solid conical nozzle (7) is located outside the bottom plate dust collection groove (2). Water supply pipes (8) are provided on the left and right side walls of the bottom plate dust collection groove (2). The inlet of each solid conical nozzle (7) is connected to the water supply pipe (8).

2. The mine negative pressure spray dust suppression and gangue collection device according to claim 1, characterized in that: The upper ends of the two outer plates (1) are closed by a top retaining net (9). The two front corners of the top retaining net (9) are fixed to the corresponding side hydraulic support (3) by the front hanging chain (10) and the two rear corners of the top retaining net (9) are fixed to the corresponding side hydraulic support (3) by the rear hanging chain (11). The front hanging chain (10) is shorter than the rear hanging chain (11), so that the top retaining net (9) is in an inclined state with the front end high and the rear end low.

3. The mine negative pressure spray dust suppression and gangue collection device according to claim 1, characterized in that: The bottom plate dust collection groove (2) is provided with two positioning inner grooves (4) on its left and right side walls. The two positioning inner grooves (4) are spaced apart. The two outer plates (1) are provided with two positioning protrusions (5) on their respective sides. The two positioning protrusions (5) correspond one-to-one with the two positioning inner grooves (4) on the same side. The four positioning protrusions (5) are connected one-to-one with the four positioning inner grooves (4), so that the upper end of the bottom plate dust collection groove (2) is connected to the lower end of the two outer plates (1).

4. The mine negative pressure spray dust suppression and gangue collection device according to claim 1, characterized in that: The negative pressure fan (6) is a water-powered motor, which is supplied with water by a water supply pipe (8).

5. The mine negative pressure spray dust suppression and gangue collection device according to claim 1, characterized in that: The positioning inner groove (4) is a rectangular groove or a strip groove.

6. The mine negative pressure spray dust suppression and gangue collection device according to claim 1, characterized in that: The negative pressure fan (6) is located at the front end of the bottom plate dust collection trough (2), and the front port of the bottom plate dust collection trough (2) is closed by the fan baffle net (12).

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