A dust reduction device for coal mining

Abstract

The utility model provides a coal mine excavation dust suppression device, which relates to the technical field of dust suppression devices, and includes a base, an outer tube, an inner tube and a main water pipe. In the coal mine excavation dust suppression device, water in the main water pipe flows into a water storage tank through a branch pipe on the peripheral side thereof, and the water in the water storage tank is sprayed out through a spray chamber of a spray pipe. When the water flows rapidly from the inlet end of the small-sized spray chamber to the outlet end of the large-sized spray chamber, it will rapidly expand and mix with the air at the outlet, thereby forming fine water mist that diffuses in the outer tube. The starter motor can drive the inner tube to rotate at a high speed, and the water in the spray pipe will be rapidly sprayed outward under the action of centrifugal force. The refined water mist can more effectively capture and settle dust and particles in the air, thereby reducing the dust concentration in the air. The device is small in size and only needs to be placed in a working environment where excavation operations are being performed. Multiple devices can be placed at the same location, or they can be placed in a targeted manner according to the dust concentration in different location areas.

Description

Technical Field

[0001] The utility model relates to the technical field of dust suppression devices, in particular to a dust suppression device for coal mine excavation. Background Art

[0002] Coal mining dust suppression equipment is a device or system used to reduce the spread of coal dust generated during coal mining. It is designed to effectively control the coal dust generated during coal mining and reduce the spread of coal dust into the surrounding environment, thereby reducing the impact of coal mining on the environment and workers' health. During coal mining, the working face and excavation position will continue to change, so the dust suppression device needs to have a certain degree of mobility and be able to flexibly follow the changes in the working face to ensure that the dust-generating points are covered.

[0003] After searching, the Chinese patent with the patent publication number "CN220101332U" provides a "spray dust suppression device for coal mines, which can reserve a spray channel during the mobile spray dust suppression process, so as to realize mobile spray dust suppression in mine tunnels while ensuring that people and objects can pass smoothly". Although the spray device of the device can be moved in mine tunnels to perform dust suppression operations, the device is too large and will occupy a large amount of working space. It has low flexibility and cannot cope with the complex and changeable coal mining environment. Utility Model Content

[0004] The utility model provides a coal mine excavation dust reduction device, which solves the problems that the device proposed in the above background technology is too large, occupies a large amount of working space, has low flexibility, and cannot cope with the complex and changeable coal mining environment.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal mine excavation dust suppression device, comprising a base, an outer tube, an inner tube and a main water pipe, the outer tube is fixed at the upper end of the base, a plurality of mesh plates are arranged on the circumference of the outer tube, a mounting seat is fixed on the upper end of the outer tube, a motor is fixed at the center position of the mounting seat, the inner tube is arranged inside the outer tube, the inner tube is fixedly connected to the output shaft of the motor, a plurality of nozzles are vertically arranged on the circumference of the inner tube around the axis of the inner tube, a spray cavity is penetrated through the interior of the nozzle, the spray cavity is connected with the interior of the inner tube, the main water pipe is vertically arranged inside the inner tube, the main water pipe is fixedly connected to the base, and a plurality of branch pipes are vertically arranged on the circumference of the main water pipe around the axis of the main water pipe.

[0006] Preferably, a mesh plate 2 is provided in the space left between the outer cylinder and the mounting seat.

[0007] Preferably, a plurality of blowing assemblies are arranged on the peripheral side of the motor one, and the blowing assemblies include a frame, motor two and fan blades, the frame is fixed on the mounting seat, the motor two is fixed on the upper end of the frame, and the fan blades are arranged on the output shaft of the motor two.

[0008] Preferably, annular side grooves are arranged vertically on the inner side of the inner tube, and a water storage tank is provided at the lower end of the inner side groove.

[0009] Preferably, the water storage tank at a corresponding height is connected to the spray chamber.

[0010] Preferably, the branch pipe is inserted into the side groove, and the vertical arrangement position of the branch pipe along the main water pipe corresponds to the vertical arrangement position of the side groove along the inner tube.

[0011] Preferably, the size of the water inlet end of the spray chamber is smaller than the size of the water outlet end of the spray chamber, and the water outlet end of the spray chamber is a truncated cone-shaped cavity with a through opening.

[0012] Preferably, a water inlet pipe is fixedly connected to the lower end of the branch pipe, the water inlet pipe protrudes out of the lower end of the base, and a filter screen is arranged inside the water inlet pipe.

[0013] Preferably, a plurality of supporting legs are provided at the lower end of the base.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. An external water supply device is connected to the water inlet pipe. The water flows through the filter on the water inlet pipe to filter out impurities and flows into the main water pipe. The water in the main water pipe flows into the water storage tank at the lower end of the inner side tank through the branch pipes around it. The water in the water storage tank is sprayed out through the spray cavity of the spray pipe. The size of the water inlet end of the spray cavity is small, and the water flow speed passing through this place is fast. When the water flows rapidly from the inlet end of the small-sized spray cavity to the outlet end of the large-sized spray cavity, it will quickly expand and mix with the air at the outlet, thereby forming fine water mist that diffuses in the outer cylinder. Starting the motor can drive the inner cylinder to rotate at a high speed, and the water in the spray pipe will be quickly sprayed outward under the action of centrifugal force.

[0016] 2. Mesh plates 1 and 2 on the outer cylinder can further disperse the water mist into smaller droplets. The refined water mist can more effectively capture and settle dust and particles in the air, thereby reducing the dust concentration in the air. Starting motor 2 can drive the fan blades to rotate at high speed, stirring the air inside the outer cylinder, so that the water mist in the outer cylinder quickly passes through mesh plates 1 and 2 and diffuses into the surrounding air for dust reduction operations. The device is small in size and only needs to be placed in a working environment where excavation operations are being carried out. Multiple devices can be placed at the same location, or they can be placed in a targeted manner according to the dust concentration in different locations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the coal mine excavation dust reduction device of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the inner cylinder and the main water pipe of the utility model;

[0019] Figure 3 for Figure 2 A magnified image of point A;

[0020] Figure 4 This is a schematic diagram of the main water pipe structure of the utility model;

[0021] Figure 5 This is a top view of the outer cylinder of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the blowing component of the utility model.

[0023] Numbers in the figure: 1. base; 11. support foot; 2. dust suppression mechanism; 21. outer cylinder; 211. mesh plate 1; 212. mounting base; 213. mesh plate 2; 214. motor 1; 215. blowing assembly; 2151. frame; 2152. motor 2; 2153. fan blades; 22. inner cylinder; 221. nozzle; 2211. spray chamber; 222. side groove; 2221. water storage tank; 23. main water pipe; 231. branch pipe; 232. water inlet pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model provides a coal mine excavation dust reduction device, such as Figure 1 and Figure 2 As shown, it includes a base 1 and a dust suppression mechanism 2. The dust suppression mechanism 2 is arranged on the base 1. A plurality of legs 11 are arranged at the lower end of the base 1. The dust suppression mechanism 2 includes an outer tube 21, an inner tube 22 and a main water pipe 23. The main water pipe 23 is vertically arranged inside the inner tube 22. The main water pipe 23 is fixedly connected to the base 1. A plurality of branch pipes 231 are vertically arranged around the axis of the main water pipe 23. Figure 2 and Figure 3As shown, an annular side groove 222 is arranged vertically on the inner side of the inner tube 22, a water storage tank 2221 is arranged at the inner lower end of the side groove 222, and a branch pipe 231 is inserted into the side groove 222. The vertical arrangement position of the branch pipe 231 along the main water pipe 23 corresponds to the vertical arrangement position of the side groove 222 along the inner tube 22, and the water in the main water pipe 23 flows into the water storage tank 2221 at the inner lower end of the side groove 222 through the branch pipe 231 on its peripheral side. A plurality of nozzles 221 are vertically arranged around the axis of the inner cylinder 22 on the circumference of the inner cylinder 22. A spray cavity 2211 is penetrated through the inside of the nozzle 221. A water storage tank 2221 of a corresponding height is connected with the spray cavity 2211. Water in the water storage tank 2221 is sprayed out through the spray cavity 2211 of the nozzle 221. The size of the water inlet end of the spray cavity 2211 is smaller than the size of the water outlet end of the spray cavity 2211. The water outlet end of the spray cavity 2211 is a truncated cone-shaped cavity with a through opening. The size of the water inlet end of the spray cavity 2211 is small, and the water flow speed passing therethrough is fast. When the water flows rapidly from the inlet end of the small-sized spray cavity 2211 to the outlet end of the large-sized spray cavity 2211, it will quickly expand and mix with air at the outlet, thereby forming fine water mist that diffuses in the outer cylinder 21.

[0026] like Figure 1 and Figure 5 As shown, the outer cylinder 21 is fixed to the upper end of the base 1, a plurality of mesh plates 211 are arranged around the outer cylinder 21, a mounting seat 212 is fixed to the upper end of the outer cylinder 21, a mesh plate 213 is arranged in the space between the outer cylinder 21 and the mounting seat 212, and a motor 214 is fixed at the center of the mounting seat 212. Figure 1 and Figure 2 As shown, the inner cylinder 22 is arranged inside the outer cylinder 21, and the inner cylinder 22 is fixedly connected to the output shaft of the motor 1 214. Starting the motor 1 214 can drive the inner cylinder 22 to rotate at a high speed, and the water in the nozzle 221 will be quickly sprayed outward under the action of centrifugal force. The mesh plate 1 211 and the mesh plate 2 213 on the outer cylinder 21 can further disperse the water mist into smaller droplets. The refined water mist can more effectively capture and settle dust and particles in the air, thereby reducing the dust concentration in the air.

[0027] like Figure 1 and Figure 6 As shown, multiple groups of blowing components 215 are arranged on the surrounding side of motor 1 214, and the blowing components 215 include a frame 2151, motor 2152 and fan blades 2153. The frame 2151 is fixed on the mounting base 212, and motor 2152 is fixed on the upper end of the frame 2151. The fan blades 2153 are arranged on the output shaft of motor 2152. Starting motor 2152 can drive the fan blades 2153 to rotate at a high speed, stirring the air inside the outer cylinder 21, so that the water mist in the outer cylinder 21 quickly passes through the mesh plate 1 211 and the mesh plate 2 213.

[0028] like Figure 2 and Figure 4 As shown, the lower end of the branch pipe 231 is fixedly connected with a water inlet pipe 232, which protrudes out of the lower end of the base 1. A filter is arranged inside the water inlet pipe 232, and an external water supply device is connected to the water inlet pipe 232. The water flows through the filter on the water inlet pipe 232 to filter out impurities and then flows into the main water pipe 23.

[0029] Adopting the utility model, such as Figure 1 and Figure 2 As shown, an external water supply device is connected to the water inlet pipe 232, and the water flows through the filter screen on the water inlet pipe 232 to filter out impurities and flow into the main water pipe 23. The water in the main water pipe 23 flows into the water storage tank 2221 at the lower end of the inner part of the side groove 222 through the branch pipe 231 on the peripheral side thereof, and the water in the water storage tank 2221 is sprayed out through the spray cavity 2211 of the spray pipe 221. The size of the water inlet end of the spray cavity 2211 is small, and the water flow speed passing through this place is fast. When the water flows quickly from the inlet end of the small-sized spray cavity 2211 to the outlet end of the large-sized spray cavity 2211, it will quickly expand and mix with air at the outlet, thereby forming fine water mist that diffuses in the outer cylinder 21, and the starting motor 214 can drive the inner cylinder 22 to rotate at a high speed, and the water in the spray pipe 221 will be sprayed out at the outlet. The water mist is quickly sprayed outwards under the action of centrifugal force, and the mesh plate 1 211 and the mesh plate 213 on the outer cylinder 21 can further disperse the water mist into smaller droplets. The refined water mist can more effectively capture and settle dust and particles in the air, thereby reducing the dust concentration in the air. The starting motor 2152 can drive the fan blades 2153 to rotate at a high speed, stirring the air inside the outer cylinder 21, so that the water mist in the outer cylinder 21 quickly passes through the mesh plate 1 211 and the mesh plate 213, and diffuses into the surrounding air to perform dust reduction operations. The device is small in size and only needs to be placed in a working environment where excavation operations are being carried out. Multiple devices can be placed at the same location, or they can be placed in a targeted manner according to the dust concentration in different locations and areas.

[0030] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A coal mine excavation dust suppression device, characterized in that: The utility model comprises a base (1) and a dust reduction mechanism (2), wherein the dust reduction mechanism (2) is arranged on the base (1), and the dust reduction mechanism (2) comprises an outer cylinder (21), an inner cylinder (22) and a main water pipe (23), wherein the outer cylinder (21) is fixed to the upper end of the base (1), a plurality of mesh plates (211) are arranged on the peripheral side of the outer cylinder (21), a mounting seat (212) is fixed to the upper end of the outer cylinder (21), a motor (214) is fixed at the center position of the mounting seat (212), and the inner cylinder (22) is arranged inside the outer cylinder (21), and the inner cylinder (22) and the inner cylinder (22) are connected to each other. The output shaft of the motor 1 (214) is fixedly connected, a plurality of nozzles (221) are vertically arranged around the axis of the inner cylinder (22) on the circumference of the inner cylinder (22), a spray chamber (2211) is opened inside the nozzle (221), and the spray chamber (2211) is connected to the interior of the inner cylinder (22), the main water pipe (23) is vertically arranged inside the inner cylinder (22), the main water pipe (23) is fixedly connected to the base (1), and a plurality of branch pipes (231) are vertically arranged around the axis of the main water pipe (23) on the circumference of the main water pipe (23).

2. A coal mine excavation dust suppression device according to claim 1, characterized in that: A second mesh plate (213) is provided in the space left between the outer cylinder (21) and the mounting seat (212).

3. A coal mine excavation dust suppression device according to claim 1, characterized in that: A plurality of blowing assemblies (215) are arranged on the peripheral side of the motor one (214), and the blowing assemblies (215) include a frame (2151), a motor two (2152) and fan blades (2153); the frame (2151) is fixed on the mounting seat (212), the motor two (2152) is fixed on the upper end of the frame (2151), and the fan blades (2153) are arranged on the output shaft of the motor two (2152).

4. A coal mine excavation dust suppression device according to claim 1, characterized in that: Annular side grooves (222) are arranged vertically on the inner side of the inner cylinder (22), and a water storage tank (2221) is provided at the lower end of the inner side groove (222).

5. A coal mine excavation dust suppression device according to claim 4, characterized in that: The water storage tank (2221) at a corresponding height is communicated with the spray chamber (2211).

6. A coal mine excavation dust suppression device according to claim 4, characterized in that: The branch pipe (231) is inserted into the side groove (222), and the vertical arrangement position of the branch pipe (231) along the main water pipe (23) corresponds to the vertical arrangement position of the side groove (222) along the inner tube (22).

7. A coal mine excavation dust suppression device according to claim 1, characterized in that: The size of the water inlet end of the spray chamber (2211) is smaller than the size of the water outlet end of the spray chamber (2211), and the water outlet end of the spray chamber (2211) is a truncated cone-shaped cavity with a through opening.

8. The coal mine excavation dust suppression device according to claim 1, characterized in that: The lower end of the branch pipe (231) is fixedly connected to a water inlet pipe (232), the water inlet pipe (232) protrudes out of the lower end of the base (1), and a filter screen is arranged inside the water inlet pipe (232).

9. A coal mine excavation dust suppression device according to claim 1, characterized in that: A plurality of supporting feet (11) are provided at the lower end of the base (1).

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