A dust suppression and dust removal device for fully mechanized mining faces

By setting up cross-water mist sealing surfaces and guiding structures in the fully mechanized mining face, the problems of dust overflow from fully mechanized mining equipment and dust generated by coal slag blocks were solved, achieving more efficient dust suppression and removal effects and ensuring a clean and safe working environment.

CN120444070BActive Publication Date: 2026-04-21WUHAI GONGWUSU COAL IND CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAI GONGWUSU COAL IND CO LTD
Filing Date
2025-05-28
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Existing spray dust suppression technology cannot effectively contain the dust overflow range in fully mechanized mining faces, nor can it effectively deal with the dust generated by coal slag blocks brought up by the rotation of fully mechanized mining equipment, resulting in poor dust suppression and removal effects.

Method used

A dust suppression and removal device for fully mechanized mining faces is designed. The first and second pipes are radially distributed along the annular surface to form a cross-water mist sealing surface. Combined with the baffle plate and water inlet cavity structure, the water mist can be cross-collided and guided multiple times, which enhances the contact between dust and water mist. The water mist is adsorbed through the diversion channel and water filtration structure, reducing diffusion.

Benefits of technology

It improves dust suppression and removal efficiency, reduces the risk of dust spillage, lowers the possibility of coal slag generating dust again, and maintains a clean and safe working environment.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a dust suppression and removal device for a fully mechanized mining face, comprising: a first pipe and a second pipe, the first pipe and the second pipe being radially spaced along an annular surface; the first pipe and the second pipe having linear water outlets, the extended lines of the linear water outlets on the first pipe and the second pipe being intersecting; and a baffle plate disposed on the periphery of the space between the first pipe and the second pipe, with gaps between the baffle plate and the first pipe and the second pipe at both ends. This invention forms a closed surface around the fully mechanized mining equipment by creating intersecting water mist, which reduces the risk of dust overflowing and also impacts the thrown coal slag blocks, assisting in the crushing of the coal slag blocks and their contact with the water mist, reducing the risk of dust generation again after the coal slag blocks are thrown out, and improving the dust suppression and removal effect.
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Description

Technical Field

[0001] This invention relates to the field of dust control technology, and in particular to a dust suppression and removal device for fully mechanized mining faces. Background Technology

[0002] Coal mining generates a large amount of dust, which is suspended in the air. When the concentration reaches a certain level or is affected by a shock wave, it can cause a secondary explosion, posing a serious safety hazard. Therefore, dust control during the shifting process of a fully mechanized mining face often uses spray dust suppressors, which adsorb and settle airborne dust by spraying it into the air.

[0003] The dust originates from the contact point between the fully mechanized mining equipment and the coal face. Current dust suppression operations involve spraying mist at this contact point, but this method has several problems: First, the spray area cannot form a closed loop at the contact point, causing a large amount of dust to spill out. Second, the high-speed rotation of the fully mechanized mining equipment carries up a large number of coal slag chunks of varying sizes. Some loose coal slag chunks disperse and generate dust during their ejection, while some hard coal slag chunks generate dust when they come into contact with other hard objects. Current spraying technology cannot effectively solve these problems, resulting in poor dust suppression and removal effects and impacting the working environment. Summary of the Invention

[0004] In order to solve the technical problems existing in the prior art, the present invention provides a dust suppression and dust removal device for fully mechanized mining faces.

[0005] To achieve the above objectives, the present invention provides a dust suppression and removal device for fully mechanized mining faces, comprising:

[0006] The first pipe and the second pipe are radially spaced along the annular surface; the first pipe and the second pipe have linear water outlets, and the extended lines of the linear water outlets on the first pipe and the second pipe are intersecting.

[0007] A barrier plate is disposed on the periphery of the space between the first pipe and the second pipe, and there are gaps between the two ends of the barrier plate and the first pipe and the second pipe.

[0008] Furthermore, the barrier plate is provided with a water inlet cavity, which has a U-shaped structure. One end of the water inlet cavity is arranged in a first direction facing the linear outlet of the first or second pipe, and the other end is arranged in a second direction at an angle to the first direction.

[0009] Furthermore, an impeller block is provided inside the water intake cavity, with the water receiving surface of the impeller block facing the direction of water flow inside the water intake cavity. A rotating shaft is inserted into the impeller block, and the rotating shaft is connected to a fan blade block. The fan blade block is located inside the cavity, which is connected to the flow channel. A water filter structure is provided inside the flow channel, and the flow channel is connected to a flow outlet. The flow outlet is linearly arranged on the first and second end faces of the baffle plate. A drainage channel is provided inside the baffle plate, with one end of the drainage channel connected to the area near the water filter structure inside the flow channel, and the other end connected to a conduit.

[0010] Furthermore, the water filtration structure includes an inner ring with a water filtration layer and a notch on the inner ring connecting to the drainage channel. The inner ring has an annular channel with through holes distributed circumferentially and facing the water filtration layer.

[0011] Furthermore, the first or second pipe has a branch pipe, the branch pipe is equipped with a pressure regulating valve, and the outlet end of the branch pipe extends into the drainage channel and is connected to the annular channel.

[0012] Furthermore, the barrier plate is provided with a water distribution cavity, the water inlet of the water distribution cavity is connected to the water intake cavity, and the water outlet of the water distribution cavity is connected to the dust collection port, and the dust collection port is linearly arranged along the first end face or the second end face of the barrier plate.

[0013] Furthermore, the first pipe and the second pipe have arc-shaped linear water outlets at both ends of their surfaces. The arc-shaped linear water outlets are distributed in a ring at equal intervals on the surfaces of the first pipe and the second pipe, and the arc-shaped linear water outlets on the first pipe and the second pipe are arranged in staggered positions.

[0014] Furthermore, the first end of the first tube and the second tube are suspended, the second end is connected to one end of the telescopic member, the other end of the telescopic member is hinged to the collar, and the collar is provided with an adjusting cylinder connected to the first tube and the second tube.

[0015] Furthermore, the surface of the barrier plate has evenly distributed pointed protrusions.

[0016] Furthermore, the first and second pipes are evenly distributed in a circular shape along the annular surface, and a cross-shaped water mist is formed between adjacent first and second pipes through linear water outlets.

[0017] Compared with the prior art, the present invention provides a dust suppression and removal device for fully mechanized mining faces, which has the following beneficial effects:

[0018] (1) The present invention forms a closed surface around the fully mechanized mining equipment by intersecting water mist, which reduces the risk of dust overflowing and can also impact the thrown coal slag blocks, assisting the coal slag blocks to break and come into contact with water mist, reducing the risk of dust being generated again after the coal slag blocks are thrown out, and improving the dust suppression and dust removal effect.

[0019] (2) The present invention guides the water mist after the cross collision through the water inlet cavity, so that it returns to the gap between the first pipe and the second pipe and the baffle plate. This not only makes the dust and water mist come into more contact, but also assists in the crushing of the coal slag blocks from another direction.

[0020] (3) The present invention generates negative pressure in the drainage channel to adsorb the water mist that overflows from the gap between the first and second pipes and the baffle plate and comes into full contact with the dust, thereby reducing the amount of water mist that diffuses outward and avoiding excessive humidity on the working surface, which affects the visibility of workers and working conditions. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 Front view of the structural end face;

[0024] Figure 3 This is a schematic diagram showing the radial distribution of the first and second tubes of the present invention;

[0025] Figure 4 This is a schematic diagram showing the distribution of the first and second tubes along the annular surface of the present invention;

[0026] Figure 5 This is a front view schematic diagram of the barrier plate structure of the present invention;

[0027] Figure 6 For the present invention Figure 5 Schematic diagram of the AA section of the middle structure;

[0028] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point C;

[0029] Figure 8 For the present invention Figure 5 Schematic diagram of the BB cross-section of the middle structure;

[0030] Figure 9 This is a schematic diagram of the water filtration structure distribution within the water intake channel of the present invention;

[0031] Figure 10 This is a partial cross-sectional schematic diagram of the water filtration structure of the present invention;

[0032] Figure 11 This is a schematic diagram of the drainage channel structure of the present invention;

[0033] Figure 12 This is a schematic diagram of the first tube structure of the present invention;

[0034] Figure 13 This is a schematic diagram showing the distribution of the first tube, the second tube, and the barrier plate along the annular surface of the present invention;

[0035] Figure 14 This is a schematic diagram of the connection and distribution structure of the telescopic component, collar, and adjusting cylinder of the present invention;

[0036] Explanation of reference numerals in the attached figures:

[0037] a. Linear outlet; b. Arc-shaped linear outlet; S. Annular surface; s1. First end face; s2. First end face;

[0038] 100. First pipe; 200. Second pipe; 300. Baffle plate; 301. Water inlet chamber; 3011. Impeller block; 3012. Rotating shaft; 3013. Fan blade block; 3014. Cavity; 3015. Drainage channel; 3016. Filter structure; 30161. Internal ring; 30162. Filter layer; 30163. Annular channel; 30164. Through hole; 3017. Drainage port; 3018. Drainage channel; 30181. Protrusion; 3019. Conduit; 302. Water distribution chamber; 303. Dust suppression port; 304. Baffle; 400. Branch pipe; 401. Pressure regulating valve; 500. Telescopic component; 501. Collar; 502. Adjusting cylinder. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] Please see Figure 1-4 This invention provides a dust suppression and removal device for fully mechanized mining faces, which is installed on the periphery of the fully mechanized mining equipment during specific use. The device includes:

[0041] The first pipe 100 and the second pipe 200 are radially spaced along the annular surface S (because there is a diameter difference between the tunneling end and the drive end of the fully mechanized mining equipment, the radial distribution can be adapted to the installation of the fully mechanized mining equipment without occupying extra space; it can also make the sprayed water mist form a certain angle with the thrown slag, with a larger contact surface and improved dust removal effect); the first pipe 100 and the second pipe 200 have linear water outlets a, specifically, the first pipe 100 and the second pipe 200 are provided with high-pressure water flow by an external water supply device;

[0042] The extended lines of the linear water outlets a on the first pipe 100 and the second pipe 200 are arranged to intersect. This arrangement causes the water mist sprayed from the first pipe 100 and the second pipe 200 to cross each other and form a closed surface around the fully mechanized mining equipment, reducing the spillage of dust and preventing coal slag blocks carried by the fully mechanized mining equipment from flying outwards during operation.

[0043] A baffle plate 300 is disposed on the periphery of the space between the first pipe 100 and the second pipe 200, and there are gaps between the two ends of the baffle plate 300 and the first pipe 100 and the second pipe 200. This arrangement allows the water mist and dust to come into full contact, and also provides sufficient space for the fully mechanized mining equipment, preventing the thrown coal slag from getting stuck between the device and the fully mechanized mining equipment due to insufficient space.

[0044] In this embodiment, high-pressure water flow is input into the first pipe 100 and the second pipe 200, and surface water mist is output through the existing water outlet a. The two water mists intersect each other to form a closed surface, which not only prevents dust from overflowing, but also crushes and reduces dust on the thrown coal slag blocks.

[0045] This embodiment forms a closed surface around the fully mechanized mining equipment by creating intersecting water mists, which reduces the risk of dust overflowing and also impacts the thrown coal slag blocks, helping to break them up and contact them with the water mist. This reduces the risk of dust being generated again after the coal slag blocks are thrown out, thus improving the dust suppression and removal effect.

[0046] In one embodiment, please refer to Figure 2 , Figure 5 and Figure 6 The baffle plate 300 is provided with a water inlet cavity 301. The water inlet cavity 301 has a U-shaped structure. One end of the water inlet cavity 301 is set along a first direction f1 that is directly opposite to the linear water outlet a on the first pipe 100 or the second pipe 200. The other end is set along a second direction f2 that is at an angle to the first direction f1. Specifically, the first direction f1 and the second direction f2 are set opposite to each other. Preferably, the angle between the first direction f1 and the second direction f2 is 90°.

[0047] Specifically, multiple sets of water inlet cavities 301 are evenly distributed on the baffle plate 300, with two water inlet cavities 301 in each set, corresponding to the first pipe 100 and the second pipe 200 respectively.

[0048] In this embodiment, the planar water mist output from the first pipe 100 and the second pipe 200 intersects each other. Due to the high pressure, some water mist will break through the current closed surface and move towards the baffle plate 300. This part of the water mist also has a certain initial velocity. Most of the water mist enters from one end of the water inlet chamber 301, is guided by the water inlet chamber 301, and is output from the other end of the water inlet chamber 301. This part of the water mist moves in the opposite direction to the planar water mist, and can cooperate with the planar water mist generated by the first pipe 100 and the second pipe 200 from different directions to improve the dust suppression effect and at the same time improve the crushing effect of the thrown-out coal slag blocks.

[0049] In one embodiment, please refer to Figure 6-8 An impeller block 3011 is provided inside the water inlet cavity 301. The water receiving surface of the impeller block 3011 faces the direction of the water flow inside the water inlet cavity 301. A rotating shaft 3012 is inserted into the impeller block 3011. The rotating shaft 3012 is connected to the fan blade block 3013. The baffle plate 300 is provided with a flow guide channel that communicates with the cavity 3014 to realize the flow of air. The fan blade block 3013 is located inside the cavity 3014. The cavity 3014 is connected to the flow guide channel 3015.

[0050] The drainage channel 3015 is equipped with a water filter structure 3016, and the drainage channel 3015 is connected to the drainage port 3017. The drainage port 3017 is linearly arranged with the first end face s1 and the second end face s2 of the baffle plate 300. The baffle plate 300 is equipped with a drainage channel 3018. One end of the drainage channel 3018 is connected to the drainage channel 3015 near the water filter structure 3016, and the other end is connected to the conduit 3019.

[0051] In this embodiment, the planar water mist output from the first pipe 100 and the second pipe 200 intersects. Due to the high pressure, some water mist will break through the current closed surface and move towards the baffle plate 300. This part of the water mist also has a certain initial velocity. Most of the water mist enters from one end of the water inlet chamber 301 and drives the impeller block 3011 to rotate. The rotating shaft 3012 drives the fan blade block 3013 to rotate, generating an suction airflow in the cavity 3014. This airflow draws the water mist that has diffused to both ends of the baffle plate 300 and is in full contact with the dust into the drainage channel 3015. After contacting the water filter structure 3016, this part of the water mist gathers into water droplets and is discharged outward through the drainage channel 3018 and the conduit 3019, preventing the water mist from spreading outward, which would affect the working environment of the fully mechanized mining face and the health of the workers.

[0052] For preferred options, please refer to [link / reference]. Figure 11The drainage channel 3018 is provided with staggered protrusions 30181. The protrusions 30181 can prevent the adsorption force generated in the cavity 3014 from acting on the drainage channel 3018, causing water mist to flow back from the drainage channel 3018 into the drainage channel 3015.

[0053] For preferred options, please refer to [link / reference]. Figure 6 The first end face s1 and the second end face s2 of the baffle plate 300 are provided with baffles 304. This arrangement can prevent the baffles 304 from generating a large adsorption force on the cross water mist area formed by the first pipe 100 and the second pipe 200, thereby reducing the formation effect of the water mist closure surface. When the cross water mist fully contacts the slag and overflows outward, the water mist that has recombined with the dust is drawn into the drainage channel 3015 and made to gather into water droplets for discharge, thus ensuring a good working environment at the fully mechanized mining face.

[0054] In addition, to avoid the problem that the cross-spray water mist from the first pipe 100 and the second pipe 200 cannot drive the impeller block 3011 to rotate due to insufficient speed, the first pipe 100 and the second pipe 200 can have at least one point where water mist is generated directly opposite the water inlet chamber 301 and does not cross-spray. That is, water mist can be generated in one of the first pipe 100 and the second pipe 200 at that point.

[0055] In one embodiment, please refer to Figure 6-10 The water filtration structure 3016 includes an inner ring 30161, a water filtration layer 30162 on the inner ring 30161, and a notch on the inner ring 30161 that connects to the drainage channel 3018. The inner ring 30161 has an annular channel 30163, and the annular channel 30163 has through holes 30164 that are circumferentially distributed and face the water filtration layer 30162. Specifically, the water filtration layer 30162 is made of water filtration cotton.

[0056] In this embodiment, the cavity 3014 generates a guiding gas that draws water mist mixed with dust from both ends of the baffle plate 300 into the guiding channel 3015. This water mist acts on the filter layer 30162, causing it to condense into droplets and fall into the drainage channel 3018 through the opening. The water is then discharged to the ground of the fully mechanized mining face via the conduit 3019, preventing the water mist from spreading outward and affecting both the working environment of the fully mechanized mining face and the health of the workers.

[0057] In one embodiment, please refer to Figure 10 The first pipe 100 or the second pipe 200 has a branch pipe 400. Figure 9The diagram only shows the connection end of the branch pipe 400 and the annular channel 30163. The other end is connected to the first pipe 100 or the second pipe 200. The branch pipe 400 is equipped with a pressure regulating valve 401, and the outlet end of the branch pipe 400 extends into the drainage channel 3015 and is connected to the annular channel 30163.

[0058] In this embodiment, the branch pipe 400 guides a portion of the water flow into the annular channel 30163. The water flow is output from the through hole 30164 at a certain speed and acts on the filter layer 30162. This allows for real-time cleaning of the filter layer 30162, preventing dust mixed in with the water mist from clogging the filter layer 30162 and ensuring its normal operation.

[0059] In one embodiment, please refer to Figure 8 The baffle plate 300 is provided with a water distribution cavity 302. The water inlet end of the water distribution cavity 302 is connected to the water intake cavity 301, and the water outlet end of the water distribution cavity 302 is connected to the dust collection port 303. The dust collection port 303 is linearly arranged along the first end face s1 or the second end face s2 of the baffle plate 300.

[0060] In this embodiment, some water mist in the water inlet chamber 301 enters the water distribution chamber 302, and is then output through the dust suppression port 303 via the guide of the water distribution chamber 302. This process is used to suppress dust from the slag blocks that fall directly from the fully mechanized mining equipment and the slag blocks that are thrown out.

[0061] This embodiment only sets up the baffle plate 300 distributed near the bottom of the fully mechanized mining equipment to further reduce dust from the falling slag, thereby improving the dust suppression and removal effect.

[0062] In one embodiment, please refer to Figure 12 The first pipe 100 and the second pipe 200 have arc-shaped linear water outlets b at both ends of their surfaces. The arc-shaped linear water outlets b are distributed in a ring at equal intervals on the surfaces of the first pipe 100 and the second pipe 200. With this arrangement, the adjacent first pipe 100 and second pipe 200 can form an effective barrier surface through the equally distributed arc-shaped linear water outlets b, avoiding the risk of dust overflowing from the end face of the fully mechanized mining equipment.

[0063] The arc-shaped linear water outlets b on the first pipe 100 and the second pipe 200 are staggered in position. This arrangement can form a double-layer barrier on the end face of the fully mechanized mining equipment, thereby improving the dust suppression effect.

[0064] In this embodiment, the planar water mist exists on the periphery of the working face of the fully mechanized mining equipment, and a small amount of dust will overflow from the end face of the fully mechanized mining equipment. After high-pressure water is input into the first pipe 100 and the second pipe 200, part of the planar water mist is output outward through the linear water outlet a, and another part is output outward through the arc-shaped linear water outlet b. That is, an intermittent water mist is formed at the end of the first pipe 100 and the second pipe 200 at the end face of the fully mechanized mining equipment, which suppresses and reduces the dust overflowing from the end face of the fully mechanized mining equipment. This truly forms a closed surface for dust suppression and removal, effectively reducing the overflow of dust and improving the dust suppression and removal effect.

[0065] In one embodiment, please refer to Figure 14 The first end of the first tube 100 and the second tube 200 are suspended, and the second end is connected to one end of the telescopic member 500. The other end of the telescopic member 500 is hinged to the collar 501. The collar 501 is provided with an adjusting cylinder 502 connected to the first tube 100 and the second tube 200.

[0066] Specifically, the collar 501 can adopt a splicing structure of two semi-circles, which can be assembled into fully mechanized mining equipment in the later stage.

[0067] Specifically, the telescopic component 500 can be made using a cylinder.

[0068] In this embodiment, the device is fixed to the fully mechanized mining equipment via the collar 501. The radially distributed first pipe 100 and second pipe 200 create a cross-shaped water mist closure surface, achieving efficient dust suppression and reducing dust overflow. The telescopic component 500 allows the extension length of each first pipe 100 and second pipe 200 to be adjusted, enabling the fully mechanized mining equipment to adapt to different mining faces. This ensures that the equipment's movement direction is not obstructed. In this case, the first pipe 100 and second pipe 200 in this direction are retracted a certain distance, performing dust suppression and removal operations around the fully mechanized mining equipment and the mining face. By adjusting the cylinder 502, the angle of each first pipe 100 and second pipe 200 can be adjusted as needed, allowing the device to adapt to fully mechanized mining equipment of different diameters, thus improving the device's adaptability.

[0069] In one embodiment, the surface of the barrier plate 300 has uniformly distributed pointed protrusions (not shown in the figure).

[0070] In this embodiment, the pointed protrusions enhance the impact of the baffle plate 300 on the thrown coal slag blocks, thereby improving the crushing effect on the coal slag blocks.

[0071] In one embodiment, please refer to Figure 13The first pipe 100 and the second pipe 200 are evenly distributed in a circular shape along the annular surface S, and the adjacent first pipe 100 and second pipe 200 are connected by a linear water outlet a to form a cross-shaped water mist.

[0072] In this embodiment, the first pipe 100 and the second pipe 200 are arranged circumferentially along the annular surface S, which can completely surround the fully mechanized mining equipment, thereby forming a completely closed annular surface around the fully mechanized mining equipment. This effectively suppresses the dust and slag generated by the high-speed rotation of the fully mechanized mining equipment, thereby improving the overall dust suppression and removal effect.

[0073] In the description of this invention, the terms "first," "second," "another," and "yet another" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of embodiments of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0074] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0075] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A dust suppression and removal device for a fully mechanized mining face, characterized in that... ,include: A first pipe (100) and a second pipe (200) are radially spaced along an annular surface (S); the first pipe (100) and the second pipe (200) have linear outlets (a), and the extended lines of the linear outlets (a) on the first pipe (100) and the second pipe (200) intersect each other; A barrier plate (300) is disposed on the periphery of the space between the first tube (100) and the second tube (200), and there are gaps between the two ends of the barrier plate (300) and the first tube (100) and the second tube (200); The baffle plate (300) is provided with a water inlet cavity (301). The water inlet cavity (301) has a U-shaped structure. One end of the water inlet cavity (301) is arranged in a first direction facing the linear outlet (a) on the first pipe (100) or the second pipe (200), and the other end is arranged in a second direction at an angle to the first direction. An impeller block (3011) is provided inside the water intake cavity (301). The water receiving surface of the impeller block (3011) faces the direction of water flow in the water intake cavity (301). A rotating shaft (3012) is inserted into the impeller block (3011). The rotating shaft (3012) is connected to a fan blade block (3013). The fan blade block (3013) is located inside a cavity (3014). The cavity (3014) is connected to a flow channel (3015). The flow channel (301) is located inside the cavity (3015). 5) The internal structure is a water filter (3016), and the drainage channel (3015) is connected to the drainage port (3017). The drainage port (3017) is linearly arranged on the first end face and the second end face of the baffle plate (300). The baffle plate (300) is provided with a drainage channel (3018). One end of the drainage channel (3018) is connected to the drainage channel (3015) near the water filter (3016), and the other end is connected to the conduit (3019). The water filtration structure (3016) includes an inner ring (30161), a water filtration layer (30162) on the inner ring (30161), and a notch on the inner ring (30161) that connects to the drainage channel (3018). The inner ring (30161) has an annular channel (30163) inside, and the annular channel (30163) has through holes (30164) that are circumferentially distributed and facing the water filtration layer (30162). The first pipe (100) or the second pipe (200) has a branch pipe (400), the branch pipe (400) is provided with a pressure regulating valve (401), and the water outlet end of the branch pipe (400) extends into the drainage channel (3015) and is connected to the annular channel (30163).

2. The dust suppression and removal device for a fully mechanized mining face as described in claim 1, characterized in that: The baffle plate (300) is provided with a water distribution chamber (302), the water inlet of the water distribution chamber (302) is connected to the water intake chamber (301), and the water outlet of the water distribution chamber (302) is connected to the dust collection port (303). The dust collection port (303) is linearly arranged along the first end face or the second end face of the baffle plate (300).

3. The dust suppression and removal device for a fully mechanized mining face as described in claim 1, characterized in that: The first pipe (100) and the second pipe (200) have arc-shaped linear water outlets (b) at both ends of their surfaces. The arc-shaped linear water outlets (b) are distributed in a ring at equal intervals on the surfaces of the first pipe (100) and the second pipe (200), and the arc-shaped linear water outlets (b) on the first pipe (100) and the second pipe (200) are arranged in staggered positions.

4. The dust suppression and removal device for a fully mechanized mining face as described in claim 1, characterized in that: The first end of the first tube (100) and the second tube (200) are suspended, and the second end is connected to one end of the telescopic member (500). The other end of the telescopic member (500) is hinged to the collar (501). The collar (501) is provided with an adjusting cylinder (502) connected to the first tube (100) and the second tube (200).

5. A dust suppression and removal device for a fully mechanized mining face as described in claim 1, characterized in that: The surface of the barrier plate (300) has evenly distributed pointed protrusions.

6. The dust suppression and removal device for a fully mechanized mining face as described in claim 1, characterized in that: The first tube (100) and the second tube (200) are evenly distributed in a circular shape along the annular surface (S), and a cross-shaped water mist is formed between adjacent first tubes (100) and second tubes (200) through a linear water outlet (a).

Citation Information

Patent Citations

  • Dust removal device of coal mine conveyor

    CN212686636U