Coal processing screening machine

Abstract

This utility model discloses a coal processing screening machine, comprising: a support frame with its top inclined downward at one end; a filter cylinder, the filter cylinder being rotatably placed on top of the support frame, the mesh size of the filter cylinder increasing sequentially in the downward inclination direction, and a drive unit for driving the filter cylinder to rotate installed on the outside of the support frame; the beneficial effects of this utility model are: the fan at the top of the spray box draws negative pressure out of the spray box, causing the dust inside the protective cover to be quickly drawn into the spray box through the air inlet pipe, effectively preventing dust overflow and improving the working environment; the air entering the spray box is first sprayed by the spray pipe to reduce dust, removing most of the dust; then the air passes between the bottom of partition plate one and the water surface, and is washed by water, further purifying the air; then the air enters between partition plate one and partition plate two, and then passes under partition plate three, and is discharged by the fan; this multi-stage treatment method can fully remove dust from the air, with a significant purification effect.

Description

Technical Field

[0001] This utility model relates to the field of coal processing technology, specifically to a coal processing screening machine. Background Technology

[0002] To ensure that the particle size of coal meets the requirements for subsequent processing or combustion, coal needs to be screened after crushing. The screening process is typically used to separate the crushed coal into different particle sizes for various applications. Screening generates a large amount of dust, which, when suspended in the air, degrades air quality and affects the cleanliness of the surrounding environment. If not effectively controlled, this dust may spread to nearby areas, causing serious air pollution. Dust particles also cause friction against screening equipment, conveyor belts, etc., increasing wear and tear on the equipment and shortening its lifespan. Utility Model Content

[0003] The purpose of this invention is to provide a coal processing screening machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a coal processing screening machine, comprising:

[0005] A support frame that slopes downwards from one end at the top;

[0006] The filter cartridge is rotated and placed on top of the support frame. The mesh size of the filter cartridge increases sequentially in a downward inclined direction. A drive unit for rotating the filter cartridge is installed on the outside of the support frame.

[0007] A protective cover is placed on the outside of the filter cartridge. A spray box is installed on the outside of the protective cover. An inverted L-shaped partition plate is installed inside the spray box. A spray pipe is fixed to the top of the inner wall of the partition plate. A partition plate is provided on one side of the partition plate. The bottom of the partition plate is flush with the water surface inside the spray box.

[0008] Preferably, the drive unit includes two rotating shafts rotatably mounted on the top of the support frame. Both rotating shafts are parallel to the top of the support frame. Multiple support rollers are fixed to the outer side of the rotating shafts, and a limiting ring that cooperates with the support rollers is fixed to the outer side of the filter cartridge.

[0009] Preferably, a motor is fixedly connected to one side of the support frame, and the motor is connected to one of the rotating shafts via a transmission belt assembly. The outer side of the rotating shaft connected to the motor is connected to the filter cartridge via a gear set.

[0010] Preferably, the protective cover is fixed to the top of the support frame, and a feed chute is fixed to one end of the support frame.

[0011] Preferably, the support frame has multiple discharge ports in the middle corresponding to the filter cartridge.

[0012] Preferably, an air inlet pipe is fixedly connected to the outer side of the protective cover, and the air inlet pipe is connected to the side of the spray box near the first partition plate. A third partition plate is fixedly connected to one side of the first partition plate and above the second partition plate.

[0013] Preferably, a fan is fixed to the top of the spray box to extract negative pressure from inside the spray box, and a drain pipe is provided on one side of the spray box, the height of which is flush with the bottom of the partition plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: the top of the filter cylinder is installed inclined downwards at one end, and the mesh size increases sequentially along the inclined downward direction; this allows coal of different particle sizes to fall through the mesh of corresponding apertures according to their size during the rotation process after the crushed coal enters the filter cylinder, achieving multi-stage screening and effectively separating the coal according to particle size, thus improving screening efficiency; the fan at the top of the spray box draws negative pressure out of the spray box, causing the dust inside the protective cover to be quickly drawn into the spray box through the air inlet pipe, effectively preventing dust overflow and improving the working environment; the air entering the spray box is first sprayed by the spray pipe to reduce dust and remove most of the dust; then the air passes between the bottom of the first partition plate and the water surface, and is washed by water, further purifying the air; then the air enters between the first and second partition plates, and then passes under the third partition plate and is discharged by the fan; this multi-stage treatment method can fully remove dust from the air, and the purification effect is significant. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a structural schematic diagram showing the position of the motor in this utility model;

[0017] Figure 3 This is a schematic diagram of the discharge port structure of this utility model;

[0018] Figure 4 This is an enlarged view of section A of this utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the spray box of this utility model;

[0020] Figure 6 This is a diagram showing the air travel path of this utility model.

[0021] In the diagram: 1. Support frame; 2. Rotating shaft; 3. Limiting ring; 4. Support roller; 5. Gear set; 6. Motor; 7. Filter cartridge; 8. Feed chute; 9. Protective cover; 10. Air inlet pipe; 11. Spray box; 12. Fan; 13. Drain pipe; 14. Spray pipe; 15. Partition plate one; 16. Partition plate two; 17. Partition plate three; 18. Discharge port. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, this utility model provides a technical solution: a coal processing screening machine, comprising: a support frame 1 with its top inclined downward at one end; a filter cylinder 7 rotatably mounted on the top of the support frame 1, the mesh size of the filter cylinder 7 increasing sequentially in the downward inclined direction, the feed inlet of the filter cylinder 7 being located at the top, and a drive unit for driving the filter cylinder 7 to rotate being installed on the outside of the support frame 1; a protective cover 9 installed on the outside of the filter cylinder 7, and a spray box 11 installed on the outside of the protective cover 9, the interior of the spray box 11 being equipped with an inverted L-shaped partition plate 15, a spray pipe 14 fixedly connected to the top of the inner wall of the partition plate 15, and a partition plate 2 16 fixedly connected to one side of the partition plate 15 by two metal rods, the bottom of the partition plate 2 16 being lower than the bottom of the partition plate 15, and the bottom of the partition plate 15 being flush with the water surface inside the spray box 11.

[0024] It should be noted that in this embodiment, the conveyor belt transports the crushed coal to the inside of the feed chute 8, and then into the downward-sloping filter cylinder 7. The drive unit drives the filter cylinder 7 to rotate. During the rotation, the coal moves inside the filter cylinder 7. Coal pieces smaller than the corresponding holes fall through the holes, while larger pieces that do not fall through the holes are discharged through one end of the filter cylinder 7. During this period, the fan 12 at the top of the spray box 11 draws out negative pressure from the spray box 11, and the dust inside the protective cover 9 enters the spray box 11 and is sprayed onto it through the spray pipe 14 to reduce dust. The air after dust reduction passes between the bottom of the partition plate 15 and the water surface, and comes into contact with the water surface during the passage. Then the air enters between the partition plate 15 and the partition plate 16, and is discharged by the fan 12.

[0025] In one embodiment, the drive unit includes two rotating shafts 2 rotatably mounted on the top of the support frame 1. Both rotating shafts 2 are parallel to the top of the support frame 1. Multiple support rollers 4 are fixed to the outer side of the rotating shafts 2. A limiting ring 3 that cooperates with the support rollers 4 is fixed to the outer side of the filter cartridge 7. A motor 6 is fixed to one side of the support frame 1. The motor 6 is connected to one of the rotating shafts 2 via a transmission belt assembly. The outer side of the rotating shaft 2 connected to the motor 6 is connected to the filter cartridge 7 via a gear set 5.

[0026] It should be noted that in this embodiment, the transmission belt assembly includes a small pulley fixed to the end of the motor 6 and a large pulley fixed to the end of the rotating shaft 2. The small pulley and the large pulley are connected by a transmission belt. The motor 6 drives the rotating shaft 2 to rotate through the transmission belt assembly. The rotating shaft 2 drives the gear ring at the end of the filter cylinder 7 to rotate through the small gear, thereby driving the filter cylinder 7 to rotate. The outer side of the limiting ring 3 is provided with a groove that cooperates with the support roller 4, so that the support roller 4 is limited in the groove and rolls in connection with the limiting ring 3.

[0027] In one embodiment, the protective cover 9 is fixed to the top of the support frame 1, one end of the support frame 1 is fixed to the feed trough 8, and the middle of the support frame 1 is provided with a plurality of discharge ports 18 corresponding to the filter cartridge 7.

[0028] It should be noted that in this embodiment, a corresponding conveyor is installed at the bottom of the discharge port 18, so that the material rolls into the inside of the filter cylinder 7 through the feed trough 8. After filtration, the coal is transported separately through the discharge port 18 by the corresponding conveyor belt.

[0029] In one embodiment, an air inlet pipe 10 is fixedly connected to the outside of the protective cover 9. The air inlet pipe 10 is connected to the side of the spray box 11 near the partition plate 15. A partition plate 17 is fixedly connected to one side of the partition plate 15 and above the partition plate 16. A fan 12 is fixedly connected to the top of the spray box 11 to draw out the negative pressure inside the spray box 11. A drain pipe 13 is provided on one side of the spray box 11. The height of the drain pipe 13 is flush with the bottom of the partition plate 15.

[0030] It should be noted that in this embodiment, one end of the spray pipe 14 is connected to the circulating water pump, and the drain pipe 13 and the input end of the water pump are both connected to the circulating water tank. Under the action of negative pressure, the fan 12 draws the air inside the protective cover 9 into the inner side of the partition plate 15 through the air inlet pipe 10. At this time, the spray pipe 14 sprays the air. After being sprayed, the air enters the partition plate 2 16 through the space between the partition plate 15 and the water surface. Since the water surface is flush with the bottom of the partition plate 15, the air can be washed when the water passes through. Then the air enters the space between the partition plate 2 16 and the partition plate 15, passes through the top of the partition plate 2 16 and enters the bottom of the partition plate 3 17, and is discharged by the fan 12. In this way, the dust generated during the screening process can be treated and purified.

[0031] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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.

[0032] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coal processing screen, characterised by: include: A support frame (1) with its top sloping downwards at one end; The filter cartridge (7) is rotated and placed on the top of the support frame (1). The mesh size of the filter cartridge (7) increases sequentially in the downward direction. A drive unit for driving the filter cartridge (7) to rotate is installed on the outside of the support frame (1). A protective cover (9) is placed on the outside of the filter cylinder (7). A spray box (11) is installed on the outside of the protective cover (9). An inverted L-shaped partition plate (15) is installed inside the spray box (11). A spray pipe (14) is fixed to the top of the inner wall of the partition plate (15). A partition plate (16) is provided on one side of the partition plate (15). The bottom of the partition plate (15) is flush with the water surface inside the spray box (11).

2. The coal processing screening machine according to claim 1, characterized in that: The drive unit includes two rotating shafts (2) rotatably mounted on the top of the support frame (1). Both rotating shafts (2) are parallel to the top of the support frame (1). Multiple support rollers (4) are fixed to the outside of the rotating shafts (2). A limiting ring (3) that cooperates with the support rollers (4) is fixed to the outside of the filter cartridge (7).

3. The coal processing screening machine according to claim 2, characterized in that: A motor (6) is fixedly connected to one side of the support frame (1). The motor (6) is connected to one of the rotating shafts (2) via a transmission belt assembly. The outer side of the rotating shaft (2) connected to the motor (6) is connected to the filter cartridge (7) via a gear set (5).

4. The coal processing screen of claim 1, wherein: The protective cover (9) is fixed to the top of the support frame (1), and a feed trough (8) is fixed to one end of the support frame (1).

5. The coal processing screen of claim 1, wherein: The support frame (1) has multiple discharge ports (18) in the middle corresponding to the filter cylinder (7).

6. The coal processing screen of claim 1, wherein: An air inlet pipe (10) is fixedly connected to the outside of the protective cover (9). The air inlet pipe (10) is connected to the side of the spray box (11) near the partition plate one (15). A partition plate three (17) is fixedly connected to one side of the partition plate one (15) and above the partition plate two (16).

7. The coal processing screen of claim 6, wherein: A fan (12) is fixed to the top of the spray box (11) to draw out negative pressure inside the spray box (11). A drain pipe (13) is provided on one side of the spray box (11), and the height of the drain pipe (13) is flush with the bottom of the partition plate (15).

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