Coal gangue screening device

Abstract

The utility model relates to the technical field of coal gangue screening, and particularly discloses a coal gangue screening device which comprises a screening device body and a mist spraying and smoke dust reducing assembly, the mist spraying and smoke dust reducing assembly has the function of spraying water mist, and the sprayed water mist is used for being mixed with smoke dust generated in the coal gangue screening process of the screening device body. The screening device body is provided with a cleaning assembly used for cleaning nozzles of the spraying and smoke dust reducing assembly, the cleaning assembly is connected with a position exchange motor, and the position exchange motor is used for driving the cleaning assembly to rotate, so that the cleaning assembly has at least two position forms. According to the cleaning device, the position of the cleaning assembly is moved by the position exchange motor, the cleaning assembly can be rotated to the position for cleaning the nozzle, namely the nozzle cleaning state, and in the state, smoke dust and water mixtures adhered to the surface of the nozzle can be cleaned through mutual cooperation of all components in the cleaning assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal gangue screening, and in particular relates to a coal gangue screening device. Background Art

[0002] Screening machinery is a mechanical equipment that uses rotation, vibration, reciprocation, shaking and other actions to screen various raw materials and primary products into several grades according to the particle size of the materials, or to remove moisture, impurities, etc., and then carry out the next step of processing and improve product quality.

[0003] In the Chinese patent with publication number CN 220027702 U, the gangue screening device uses a screening device to push the gangue horizontally when passing through the inclined surface of the screening frame, which effectively improves the screening effect of the gangue, so that the gangue can be screened more comprehensively and effectively, thereby ensuring the quality of the gangue after screening;

[0004] However, the device sprays water mist through the spray pipe to absorb the smoke generated in the process of screening coal gangue. However, in the process of screening coal gangue, the smoke will float everywhere, and some of the smoke will reach the vicinity of the spray pipe. This part of the smoke will adhere to the surface of the spray pipe after mixing with the water mist, causing the water spraying holes of the spray pipe to be blocked, affecting the effect of removing the smoke. Therefore, the present application proposes a coal gangue screening device that can remove the smoke and water mixture adhered to the outer surface of the water mist spraying component. Utility Model Content

[0005] The purpose of the utility model is to provide a coal gangue screening device to solve the problems raised by the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions, including a screening device body and a spray dust reduction component, wherein the spray dust reduction component has the function of spraying water mist, and the sprayed water mist is used to mix with the smoke generated in the process of screening coal gangue by the screening device body;

[0007] The screening device body is provided with a cleaning assembly for cleaning the nozzle of the spray dust reduction assembly, the cleaning assembly is connected to a position-changing motor, the position-changing motor is used to drive the cleaning assembly to rotate, so that the cleaning assembly has at least two positions, wherein the two positions are respectively a nozzle cleaning state and a nozzle retracted state, in which the cleaning assembly is located directly below the nozzle in the nozzle cleaning state, and in which the cleaning assembly is located in the storage rack in the nozzle retracted state;

[0008] The cleaning assembly comprises a cleaning shell, the cleaning shell is fixedly connected to the output shaft of the position-changing motor through a fixing plate, and a mounting plate is rotatably inserted in the cleaning shell.

[0009] Preferably, a cleaning brush is installed on one side of the mounting plate close to the nozzle. When the nozzle is in a cleaning state, the cleaning brush rests on the lower end surface of the nozzle, and the mounting plate is connected to a cleaning motor for driving the mounting plate to rotate.

[0010] Preferably, a guide groove rotatably connected to the fixed plate is provided in the storage rack, and an arc-shaped plate with a point on the axis of the position-changing motor as its center is fixedly mounted on the storage rack.

[0011] Preferably, the arc plate is rotatably connected to the arc groove on the fixed plate, and when the nozzle is in a retracted state, the cleaning assembly is located below the brush drying mechanism.

[0012] Preferably, a brush drying mechanism for drying a cleaning brush is installed on the screening device body, and the brush drying mechanism comprises a water stain wiping cloth, and when the nozzle is in a retracted state, the cleaning brush rests on the water stain wiping cloth.

[0013] Preferably, the water stain wiping cloth is installed in a wiping shell, a heating device for heating the air delivered by an air pump is installed in the wiping shell, and the air pump is installed on the wiping shell.

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

[0015] 1. In the utility model, the position of the cleaning component is moved by the position-changing motor, and can be rotated to the position of the cleaning nozzle, that is, the nozzle cleaning state. In this state, the smoke and dust water mixture adhering to the nozzle surface can be removed through the mutual cooperation of various parts in the cleaning component. The cleaning component in the nozzle retracted state will not hinder the normal operation of the spray smoke reduction component.

[0016] Second, the utility model installs a brush drying mechanism on the storage rack, which is used to remove water stains on the cleaning brush and dry the cleaning brush when the nozzle is in a retracted state. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the nozzle cleaning state in the utility model.

[0018] Figure 2 It is a structural schematic diagram of the nozzle in the retracted state in the utility model.

[0019] Figure 3 It is a top view of the nozzle in the retracted state in the utility model.

[0020] Figure 4 For this utility model Figure 3 Cross-sectional view at AA in the middle.

[0021] Figure 5 For this utility model Figure 4 Schematic diagram of the structure at B in the figure.

[0022] In the figure: 1. Screening device body; 2. Spray dust reduction component; 3. Cleaning component; 301. Cleaning shell; 302. Mounting plate; 303. Cleaning motor; 304. Cleaning brush; 4. Position exchange motor; 5. Brush drying mechanism; 501. Water stain wiping cloth; 502. Heating device; 503. Air pump; 6. Storage rack; 601. Guide groove; 602. Arc plate. DETAILED DESCRIPTION

[0023] 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.

[0024] Reference Figure 1-Figure 5 , a coal gangue screening device, comprising a screening device body 1, a spray dust reduction component 2, coal gangue is solid waste discharged during coal mining and coal washing, and is a black-gray rock with a lower carbon content and harder than coal that is associated with coal seams during the coal formation process, including tunneling gangue during tunneling, gangue mined from the roof, floor and interlayer during mining, and washed gangue picked out during coal washing. The screening device body 1 has a screening function, which is mainly used to screen coal gangue of different particle sizes, separate large pieces of coal gangue from small pieces of coal gangue, and facilitate subsequent classification and processing. The spray dust reduction component 2 has a function of spraying water mist, and the sprayed water mist is used to mix with the smoke generated in the process of screening the coal gangue by the screening device body 1, so as to achieve the effect of reducing smoke and prevent the smoke from directly mixing with the surrounding air;

[0025] Specifically, a feed port and a screening plate are arranged on the top of the screening device body 1. The feed port is located at the lower side of the material box. The entire screening plate is connected to a vibration mechanism for driving it to shake up and down. The screening holes in the screening plate screen small particles of coal gangue to the bottom of the screening plate, and the remaining large pieces of coal gangue are removed from the screening plate. Figure 1 Left side discharge shown;

[0026] Furthermore, during the process of spraying water mist by the smoke reduction component 2, part of the smoke generated during the screening process of the coal gangue screening device body 1 will reach the position of the nozzle. These smoke particles are mixed with the water mist sprayed by the nozzle and may adhere to the outer surface of the nozzle. In severe cases, the nozzle may be blocked. In order to avoid nozzle blockage, a cleaning component 3 for cleaning the nozzle of the spray smoke reduction component 2 is installed on the screening device body 1. The cleaning component 3 is connected to a position switching motor 4. The position switching motor 4 is used to drive the cleaning component 3 to rotate, so that the cleaning component 3 has at least two position forms, wherein the two position forms are respectively a nozzle cleaning state and a nozzle retracted state. In the nozzle cleaning state, the cleaning component 3 is located directly below the nozzle. In the nozzle retracted state, the cleaning component 3 is located in the storage rack 6.

[0027] Specifically, the cleaning assembly 3 includes a cleaning shell 301, the cleaning shell 301 is fixedly connected to the output shaft of the position-changing motor 4 through a fixing plate, a mounting plate 302 is rotatably plugged in the cleaning shell 301, a cleaning brush 304 is installed on the side of the mounting plate 302 close to the nozzle, when the nozzle is in a cleaning state, the cleaning brush 304 is against the lower end surface of the nozzle, and the mounting plate 302 is connected to a cleaning motor 303 for driving the same to rotate;

[0028] Furthermore, a guide groove 601 rotatably connected to the fixed plate is provided in the storage rack 6, and an arc plate 602 with a point on the axis of the position exchange motor 4 as the center is fixedly installed on the storage rack 6, and the arc plate 602 is rotatably connected to the arc groove on the fixed plate. When the nozzle is in the retracted state, the cleaning assembly 3 is located below the brush drying mechanism 5;

[0029] Furthermore, in order to remove water stains adhered to the cleaning component 3, a brush drying mechanism 5 for drying the cleaning brush 304 is installed on the screening device body 1, and the brush drying mechanism 5 includes a water stain wiping cloth 501. When the nozzle is retracted, the cleaning brush 304 rests on the water stain wiping cloth 501, and the water stain wiping cloth 501 has the function of absorbing water. The water stain wiping cloth 501 is installed in a wiping shell, and a heating device 502 for heating the air supplied by the air pump 503 is installed in the wiping shell. The air pump 503 is installed on the wiping shell. The air sprayed by the air pump 503 is heated by the heating device 502 and then blown to the water stain wiping cloth 501. The water stain wiping cloth 501 has a breathable effect, and the flow of gas accelerates the drying speed of the cleaning brush 304.

[0030] Working principle:

[0031] The top of the screening device body 1 is provided with a feed inlet and a screening plate. The feed inlet is located at the lower side of the material box. The entire screening plate is connected to a vibration mechanism for driving it to shake up and down. The screening holes in the screening plate screen small particles of coal gangue to the bottom of the screening plate, and the remaining large pieces of coal gangue are removed from the Figure 1 Left side discharge shown;

[0032] The spray dust reduction component 2 has the function of spraying water mist, and the sprayed water mist is used to mix with the smoke generated during the screening process of the screening device body 1 screening coal gangue, so as to achieve the effect of reducing smoke and prevent the smoke from directly mixing with the surrounding air;

[0033] The cleaning component 3 is used to clean the smoke and dust water mixture on the nozzle of the cleaning component 3 when the screening device body 1 stops working. During the cleaning period, the cleaning component 3 still needs to spray water mist. After the cleaning is completed, the cleaning component 3 will be driven by the position exchange motor 4 to rotate to a position away from the screening device body 1, and will not block the falling of the water mist and its mixing with the smoke and dust;

[0034] After the cleaning component 3 is cleaned, some water stains are adhered to the cleaning brush 304 therein. In order to remove the water stains adhered to the cleaning component 3, a brush drying mechanism 5 is provided to wipe the water stains on the cleaning brush 304 and dry the cleaning brush 304. Although the embodiments of the utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A coal gangue screening device, comprising a screening device body (1) and a spray dust reduction component (2), characterized in that: The smoke and dust spraying component (2) has the function of spraying water mist, and the sprayed water mist is used to mix with the smoke and dust generated in the process of screening coal gangue by the screening device body (1); The screening device body (1) is provided with a cleaning assembly (3) for cleaning the nozzle of the spray smoke reduction assembly (2); the cleaning assembly (3) is connected to a position-changing motor (4); the position-changing motor (4) is used to drive the cleaning assembly (3) to rotate, so that the cleaning assembly (3) has at least two positions, wherein the two positions are a nozzle cleaning state and a nozzle retracted state; in the nozzle cleaning state, the cleaning assembly (3) is located directly below the nozzle; and in the nozzle retracted state, the cleaning assembly (3) is located in a storage rack (6); The cleaning assembly (3) comprises a cleaning shell (301), the cleaning shell (301) being fixedly connected to the output shaft of the position-changing motor (4) via a fixing plate, and a mounting plate (302) being rotatably inserted in the cleaning shell (301).

2. A coal gangue screening device according to claim 1, characterized in that: A cleaning brush (304) is installed on one side of the mounting plate (302) close to the nozzle. When the nozzle is in a cleaning state, the cleaning brush (304) abuts against the lower end surface of the nozzle. The mounting plate (302) is connected to a cleaning motor (303) for driving the mounting plate (302) to rotate.

3. A coal gangue screening device according to claim 1, characterized in that: The storage rack (6) is provided with a guide groove (601) rotatably connected to the fixed plate, and an arc-shaped plate (602) with a point on the axis of the position exchange motor (4) as the center is fixedly mounted on the storage rack (6).

4. A coal gangue screening device according to claim 3, characterized in that: The arc plate (602) is rotatably connected to the arc groove on the fixed plate. When the nozzle is in a retracted state, the cleaning assembly (3) is located below the brush drying mechanism (5).

5. The coal gangue screening device according to claim 1, characterized in that: The screening device body (1) is provided with a brush drying mechanism (5) for drying the cleaning brush (304), wherein the brush drying mechanism (5) comprises a water stain wiping cloth (501), and when the nozzle is in a retracted state, the cleaning brush (304) rests against the water stain wiping cloth (501).

6. A coal gangue screening device according to claim 5, characterized in that: The water stain wiping cloth (501) is installed in a wiping shell, and a heating device (502) for heating the air sent by the air pump (503) is installed in the wiping shell, and the air pump (503) is installed on the wiping shell.

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