Fully-mechanized coal mining dust falling device for coal mine

Abstract

The utility model discloses a dust fall device for fully mechanized coal mining of a coal mine, which relates to the technical field of dust removal, and comprises a rack, a rotary atomization mechanism and a negative pressure nozzle mechanism, the rotary atomization mechanism is arranged on the rack and comprises a working bottom plate, the top end of the working bottom plate is fixedly connected with a mounting seat, and the mounting seat is fixedly connected with the negative pressure nozzle mechanism. A motor is fixedly connected to the rear end of the mounting seat, a lead screw is fixedly connected to the output end of the motor, an optical shaft is fixedly connected to the mounting seat, and a working sliding table is slidably connected to the optical shaft and is in threaded connection with the lead screw. The dust removal device has the beneficial effects that the umbrella-shaped water curtain is constructed by virtue of centrifugal force through the rotation of the rotary spray head, and the negative pressure nozzle mechanism is arranged to suck dust which is not covered by water mist into a negative pressure area for dust removal treatment by virtue of negative pressure generated on the basis of a Venturi effect. The atomizing disc is responsible for forming an intercepting water curtain which diffuses outwards, and the Venturi nozzle generates adsorption airflow which gathers inwards, so that a'collecting-releasing 'composite flow field is formed together.

Description

Technical Field

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

[0002] Dust is a common pollutant in coal mining. It affects the health of workers and, if the dust concentration is too high, poses a risk of dust explosion and can cause safety accidents in the coal mine. To ensure safety during coal mining, dust suppression devices are used inside the mine for dust removal.

[0003] For example, patent document CN219570140U discloses a dust suppression device for fully mechanized coal mining. The device is installed at the mining location and operates a dual-axis motor via a control switch. This motor drives a pulley and main water pipe to rotate, causing a servo motor and screw at the bottom of the water tank to move a movable block up and down, rotating a first ball within a ball seat. A connecting rod, a second ball, and the ball seat work together to adjust the opening and closing of the branch water pipes, controlling the spray angle and range. Water can be added through a water inlet pipe on the side of the water tank. A control switch controls a solenoid valve, allowing water to flow from the main water pipe to the branch water pipes and be sprayed through nozzles, enabling flexible adjustment and achieving all-around dust suppression. The dual-axis motor also drives a gear and ring gear to rotate a fan, improving air quality in the working area.

[0004] Existing dust suppression devices in fully mechanized coal mining have many shortcomings. Some spray dust suppression devices have limited spray coverage and cannot dynamically adjust to follow the cutting trajectory of the coal mining machine, resulting in poor dust suppression effect; the nozzles of some dust suppression devices are prone to clogging, requiring frequent cleaning and maintenance, which affects the normal operation of the dust suppression device and reduces dust suppression efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a dust suppression device for fully mechanized coal mining in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A dust suppression device for fully mechanized coal mining includes a frame, a rotary atomizing mechanism, and a negative pressure nozzle mechanism. The rotary atomizing mechanism is mounted on the frame. The rotary atomizing mechanism includes a working base plate, a mounting seat fixedly connected to the top of the working base plate, a motor fixedly connected to the rear end of the mounting seat, a lead screw fixedly connected to the output end of the motor, an optical shaft fixedly connected to the mounting seat, a working slide table slidably connected to the optical shaft, the working slide table and the lead screw being threadedly connected, a sliding base plate fixedly connected to the top of the working slide table, a first support plate fixedly connected to the top of the sliding base plate, a second support plate fixedly connected to the top of the sliding base plate, an atomizing water inlet pipe fixedly connected to the top of the first support plate, a rotary nozzle slidably connected to the front end of the atomizing water inlet pipe, the rotary nozzle slidably connected to the second support plate, a limit platform fixedly connected to the front end of the atomizing water inlet pipe, turbine blades fixedly connected inside the rotary nozzle, a cleaning nozzle fixedly connected to the front end of the rotary nozzle, multiple high-pressure nozzles fixedly connected to the front end of the rotary nozzle, and a cleaning nozzle fixedly connected axially upwards to the cleaning nozzle.

[0008] Preferably, the frame includes a mounting base plate, a support plate one fixedly connected to the top of the mounting base plate, a support plate two fixedly connected to the top of the mounting base plate, a support plate three fixedly connected to the top of the mounting base plate, and a working base plate fixedly connected to the top of the support plate three.

[0009] Preferably, the negative pressure nozzle mechanism includes an air inlet plate, a plurality of negative pressure generating pipes are fixedly connected to the rear end of the air inlet plate, an exhaust plate is fixedly connected to the rear end of the negative pressure generating pipes, a negative pressure water inlet pipe is fixedly connected to the side of the negative pressure generating pipe near the rotating atomizing mechanism, a main water inlet pipe is fixedly connected to the other end of the negative pressure water inlet pipe, the main water inlet pipe and the atomizing water inlet pipe are fixedly connected, a negative pressure water outlet pipe is fixedly connected to the negative pressure generating pipe, a second annular water inlet pipe is fixedly connected to the other end of the negative pressure water outlet pipe, a connecting pipe is fixedly connected to the side of the second annular water inlet pipe away from the main water inlet pipe, and a first annular water inlet pipe is fixedly connected to the connecting pipe.

[0010] Preferably, the axes of the cleaning nozzle and the cleaning head are at a certain angle.

[0011] Preferably, the front end of the rotating nozzle has multiple flow channels.

[0012] Preferably, the front end of the air intake slot plate has a deflector plate at a certain angle.

[0013] The beneficial effects are as follows: by rotating the nozzle, centrifugal force is used to construct an umbrella-shaped water curtain, and a negative pressure nozzle mechanism is set up to use negative pressure generated based on the Venturi effect to draw dust that is not covered by water mist into the negative pressure area for dust suppression. The atomizing disc is responsible for forming an outwardly diffusing intercepting water curtain, while the Venturi nozzle generates an inwardly converging adsorption airflow, together forming a "collection-release" composite flow field.

[0014] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is an isometric view of a coal mine fully mechanized dust suppression device according to the present invention;

[0017] Figure 2 This is a left sectional view of a coal mine fully mechanized dust suppression device according to the present invention;

[0018] Figure 3 This utility model describes a dust suppression device for fully mechanized coal mining. Figure 2 A magnified view of a portion of point A in the middle;

[0019] Figure 4 This is an isometric sectional view of the rotary atomizing mechanism of a fully mechanized coal mining dust suppression device according to the present invention;

[0020] Figure 5 This is an isometric sectional view of the negative pressure nozzle mechanism of a fully mechanized coal mining dust suppression device according to the present invention;

[0021] Figure 6 This is an isometric view of the main water inlet pipe of a coal mine dust suppression device according to the present invention.

[0022] The reference numerals in the attached drawings are explained as follows: 101, mounting base plate; 102, support plate one; 103, support plate two; 104, support plate three; 201, working base plate; 202, working slide; 203, sliding base plate; 204, mounting seat; 205, motor; 206, optical axis; 207, support plate one; 208, support plate two; 209, limiting platform; 210, turbine blade; 211, atomizing water inlet pipe; 212, rotating nozzle; 213, high-pressure nozzle; 214, cleaning nozzle; 215, cleaning nozzle; 216, lead screw; 301, air inlet slot plate; 302, negative pressure generating pipe; 303, exhaust slot plate; 304, main water inlet pipe; 305, negative pressure water inlet pipe; 306, annular water inlet pipe one; 307, annular water inlet pipe two; 308, negative pressure water outlet pipe; 309, connecting pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] like Figures 1-6As shown, a dust suppression device for fully mechanized coal mining includes a frame, a rotary atomizing mechanism, and a negative pressure nozzle mechanism. The rotary atomizing mechanism is mounted on the frame. The rotary atomizing mechanism includes a working base plate 201, with a mounting base 204 welded to its top. A motor 205 is bolted to the rear end of the mounting base 204. The output end of the motor 205 is connected to a lead screw 216 via a coupling. A light shaft 206 is screwed to the mounting base 204, and a working slide 202 is slidably connected to the light shaft 206. The worktable 202 is threadedly connected to the lead screw 216. A sliding base plate 203 is bolted to the top of the worktable 202. A first support plate 207 is welded to the top of the sliding base plate 203, and a second support plate 208 is welded to the top of the sliding base plate 203. An atomizing water inlet pipe 211 is welded to the top of the first support plate 207. A rotating nozzle 212 is slidably connected to the front end of the atomizing water inlet pipe 211. The rotating nozzle 212 is slidably connected to the second support plate 208. A limit station 209 is bolted to the front end of the atomizing water inlet pipe 211. The rotating nozzle 212 is internally... A turbine blade 210 is welded to the front end of a rotating nozzle 212, and a cleaning nozzle 214 is welded to the front end of the rotating nozzle 212. Multiple high-pressure nozzles 213 are welded to the front end of the rotating nozzle 212, and cleaning nozzles 215 are welded axially to the cleaning nozzle 214. Water flows in from the main inlet pipe 304. When the water flows into the turbine blade 210, it drives the turbine blade 210 to rotate. The rotation of the turbine blade 210 drives the rotating nozzle 212 to rotate, and water is sprayed out from the high-pressure nozzles 213. At the same time as the water is sprayed out, an umbrella-shaped water curtain is formed due to the rotation of the rotating nozzle 212. The dust is intercepted, and some water flows into the cleaning nozzle 214. After passing through the cleaning nozzle 214, it flows out from the cleaning nozzle 215. The water flowing out of the cleaning nozzle 215 can wash away the dust that falls on the rotating nozzle 212. When the coal mining machine cutting arm receives resistance, the dust will increase. The motor 205 starts to drive the lead screw 216 to rotate. The rotation of the lead screw 216 pushes the sliding base plate 203 forward, and the rotating nozzle 212 will be closer to the coal mining machine cutting arm, accelerating the falling of dust. When the resistance decreases, the sliding base plate 203 moves backward.

[0027] The frame includes a mounting base plate 101, a support plate 102 welded to the top of the mounting base plate 101, a support plate 2 103 welded to the top of the mounting base plate 101, a support plate 3 104 welded to the top of the mounting base plate 101, and a working base plate 201 connected to the top of the support plate 3 104 by bolts.

[0028] The negative pressure nozzle mechanism includes an air inlet plate 301. Multiple negative pressure generating pipes 302 are welded to the rear end of the air inlet plate 301. An exhaust plate 303 is welded to the rear end of each negative pressure generating pipe 302. A negative pressure water inlet pipe 305 is welded to the side of each negative pressure generating pipe 302 closest to the rotating atomizing mechanism. A main water inlet pipe 304 is welded to the other end of the negative pressure water inlet pipe 305. The main water inlet pipe 304 and the atomizing water inlet pipe 211 are fixedly connected. A negative pressure water outlet pipe 308 is welded to the negative pressure generating pipe 302. A second annular water inlet pipe 307 is welded to the other end of the negative pressure water outlet pipe 308. A connecting pipe 309 is welded to the side of the second annular water inlet pipe 307 away from the main water inlet pipe 304. A first annular water inlet pipe 306 is fixedly connected to the connecting pipe 309. A rectangular groove is formed at the rear end of the exhaust plate 303. Dust can be discharged through this. When water flows from the main inlet pipe 304 to the rotating nozzle 212, some water will flow into the negative pressure inlet pipe 305, and then into the annular inlet pipe 306. Next, the water flows from the annular inlet pipe 306 through the connecting pipe 309 into the annular inlet pipe 307. The water in the annular inlet pipe 307 flows into the negative pressure outlet pipe 308. The end of the negative pressure outlet pipe 308 is at the narrowest point of the negative pressure generating pipe 302. Due to the change in cross-sectional area during water flow, the water velocity increases, ultimately creating negative pressure in the negative pressure generating pipe 302. Dust not covered by the water curtain can be drawn into the negative pressure generating pipe 302 through the air inlet plate 301, flowing through the negative pressure generating pipe 302 to the exhaust plate 303, and finally discharged from the exhaust plate 303.

[0029] The axes of the cleaning nozzle 215 and the cleaning head 214 are at a certain angle.

[0030] The front end of the rotary nozzle 212 has multiple flow channels. These channels allow the sprayed water mist to cover the dust more evenly.

[0031] The front end of the air intake plate 301 has a guide plate at a certain angle. After the rotating atomizing mechanism has finished spraying, the dust that is not covered can be sucked into the negative pressure nozzle mechanism to achieve better dust suppression.

[0032] Working Principle: The entire machine is mounted on the cutting arm of the coal mining machine. When the cutting arm starts working, water flows in from the main water inlet pipe 304. When the water comes into contact with the turbine blades 210, it drives the turbine blades 210 to rotate. The rotation of the turbine blades 210 drives the rotating nozzle 212 to rotate, and water is sprayed out from the high-pressure nozzle 213. At the same time, due to the rotation of the rotating nozzle 212, an umbrella-shaped water curtain is formed to intercept dust. At the same time, some water flows into the cleaning nozzle 214 and then flows out from the cleaning nozzle 215. The water flowing out of the cleaning nozzle 215 can wash away the dust that falls on the rotating nozzle 212. When the cutting arm of the coal mining machine encounters resistance, the dust increases. The motor 205 starts and drives the lead screw 216 to rotate. The rotation of the lead screw 216 pushes the sliding base plate 203 forward, and the rotating nozzle 212 moves away from the cutting arm. As the cutting arm of the coal mining machine moves closer, it accelerates the settling of dust. When the resistance decreases, the sliding base plate 203 moves backward. When the water flows through the main water inlet pipe 304 to the rotating nozzle 212, some water will flow into the negative pressure water inlet pipe 305. After flowing through the negative pressure water inlet pipe 305, it flows into the first annular water inlet pipe 306. Then, the water flows from the first annular water inlet pipe 306 through the connecting pipe 309 to the second annular water inlet pipe 307. The water in the second annular water inlet pipe 307 will flow into the negative pressure water outlet pipe 308. The end of the negative pressure water outlet pipe 308 is at the narrowest point of the negative pressure generating pipe 302. Due to the change in cross-sectional area when the water flows, the water flow rate increases, and finally a negative pressure is formed in the negative pressure generating pipe 302. The dust not covered by the water curtain can be sucked into the negative pressure generating pipe 302 through the air inlet plate 301. After flowing through the negative pressure generating pipe 302, it flows into the exhaust plate 303 and is finally discharged from the exhaust plate 303.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A dust suppression device for fully mechanized coal mining, comprising a frame, a rotary atomizing mechanism, and a negative pressure nozzle mechanism, wherein the rotary atomizing mechanism is mounted on the frame, and the rotary atomizing mechanism is mounted on the frame, characterized in that: The rotary atomizing mechanism includes a working base plate (201), a mounting base (204) fixedly connected to the top of the working base plate (201), a motor (205) fixedly connected to the rear end of the mounting base (204), a lead screw (216) fixedly connected to the output end of the motor (205), an optical axis (206) fixedly connected to the mounting base (204), a working slide (202) slidably connected to the optical axis (206), the working slide (202) and the lead screw (216) being threadedly connected, a sliding base plate (203) fixedly connected to the top of the working slide (202), a support plate (207) fixedly connected to the top of the sliding base plate (203), and a fixed support plate (207) fixedly connected to the top of the sliding base plate (203). A second support plate (208) is connected to the support plate (207). An atomizing water inlet pipe (211) is fixedly connected to the top of the support plate (207). A rotating nozzle (212) is slidably connected to the front end of the atomizing water inlet pipe (211). The rotating nozzle (212) is slidably connected to the support plate (208). A limiting platform (209) is fixedly connected to the front end of the atomizing water inlet pipe (211). A turbine blade (210) is fixedly connected inside the rotating nozzle (212). A cleaning nozzle (214) is fixedly connected to the front end of the rotating nozzle (212). Multiple high-pressure nozzles (213) are fixedly connected to the front end of the rotating nozzle (212). A cleaning nozzle (215) is fixedly connected to the axial direction of the cleaning nozzle (214).

2. The dust suppression device for fully mechanized coal mining according to claim 1, characterized in that: The frame includes a mounting base plate (101), a support plate one (102) fixedly connected to the top of the mounting base plate (101), a support plate two (103) fixedly connected to the top of the mounting base plate (101), a support plate three (104) fixedly connected to the top of the mounting base plate (101), and a working base plate (201) fixedly connected to the top of the support plate three (104).

3. The dust suppression device for fully mechanized coal mining according to claim 1, characterized in that: The negative pressure nozzle mechanism includes an air inlet plate (301), a plurality of negative pressure generating pipes (302) are fixedly connected to the rear end of the air inlet plate (301), an exhaust plate (303) is fixedly connected to the rear end of the negative pressure generating pipes (302), a negative pressure water inlet pipe (305) is fixedly connected to the side of the negative pressure generating pipe (302) near the rotating atomizing mechanism, and a main water inlet pipe (304) is fixedly connected to the other end of the negative pressure water inlet pipe (305). (304) and the atomizing water inlet pipe (211) are fixedly connected. A negative pressure water outlet pipe (308) is fixedly connected to the negative pressure generating pipe (302). A second annular water inlet pipe (307) is fixedly connected to the other end of the negative pressure water outlet pipe (308). A connecting pipe (309) is fixedly connected to the second annular water inlet pipe (307) on the side away from the main water inlet pipe (304). A first annular water inlet pipe (306) is fixedly connected to the connecting pipe (309).

4. A dust suppression device for fully mechanized coal mining according to claim 1, characterized in that: The axes of the cleaning nozzle (215) and the cleaning head (214) are at a certain angle.

5. A dust suppression device for fully mechanized coal mining according to claim 1, characterized in that: The front end of the rotary nozzle (212) has multiple flow channels.

6. A dust suppression device for fully mechanized coal mining according to claim 3, characterized in that: The front end of the air intake slot plate (301) is a guide plate with a certain angle.

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