Heavy medium cyclone for cleaning coal dressing

Abstract

The utility model provides a dense medium cyclone for clean coal preparation, which relates to the technical field of dense medium cyclones, and comprises a cyclone body, the bottom of the cyclone body is fixedly connected with a first underflow pipe, the outer surface of the first underflow pipe is rotatably connected with four uniformly arranged threaded rods, and the first underflow pipe is fixedly connected with a second underflow pipe. The outer surfaces of the four threaded rods are fixedly sleeved with first limiting blocks, the bottom of the first underflow pipe is fixedly connected with a first sliding block, and the outer surfaces of the four threaded rods are in threaded connection with connecting blocks. According to the dense medium cyclone for clean coal preparation, the second underflow pipe is arranged at the bottom of the first underflow pipe, when the bottom of an outlet in the inner wall of the second underflow pipe is gradually abraded and the diameter is increased, the second underflow pipe can be detached by rotating the threaded rod so that a new second underflow pipe can be replaced, and therefore the production cost of the dense medium cyclone for clean coal preparation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of heavy medium cyclone technology, and in particular to a heavy medium cyclone for washing and preparing clean coal. Background Technology

[0002] Heavy medium cyclones for coal washing and preparation are devices specifically designed for the coal washing process. By utilizing the centrifugal force field, they separate coal of different densities and particle sizes from impurities such as mud, sand, and stones, thereby improving the purity and quality of the coal.

[0003] In existing technologies, heavy medium cyclones used for washing clean coal involve feeding coal into the cyclone. The coal entering the cyclone rotates at high speed, generating centrifugal force. Higher density impurities move outwards, while lighter density washed coal moves towards the center. Heavier impurities rotate and flow out towards the bottom of the cyclone. This rotation causes wear on the bottom of the cyclone, increasing the diameter of the bottom outlet. Since most existing heavy medium cyclones are integrally constructed, the bottom outlet cannot be modified individually. Therefore, when the increased diameter affects the centrifugal force within the cyclone, the entire cyclone needs to be replaced, increasing production costs. Thus, a novel heavy medium cyclone for washing clean coal is needed. Summary of the Invention

[0004] This utility model mainly provides a heavy medium cyclone for washing and preparing coal, which reduces production costs and ensures operational stability.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a heavy medium cyclone for washing and preparing coal, comprising a cyclone body, a first underflow tube fixedly connected to the bottom of the cyclone body, four evenly arranged threaded rods rotatably connected to the outer surface of the first underflow tube, a first limiting block fixedly sleeved on the outer surface of each of the four threaded rods, a first slider fixedly connected to the bottom of the first underflow tube, and a connecting block threadedly connected to the outer surface of each of the four threaded rods.

[0006] Preferably, a second underflow pipe is provided at the bottom of the first underflow pipe, and a slide rail is fixedly connected to one side of the outer surface of each of the four connecting blocks. The connecting blocks are fixedly connected to the slide rails, and the slide rails will move when the connecting blocks move.

[0007] Preferably, each of the four slide rails has a second slider slidably connected to its inner wall, and a second limiting block is fixedly connected to one end of each of the four second sliders. The outer surfaces of the four second sliders are slidably connected to the inner walls of the four connecting blocks respectively. The second sliders are fixedly connected to the second limiting blocks. When the second sliders slide, the second limiting blocks can limit the sliding distance of the second sliders.

[0008] Preferably, the top of the second underflow pipe is provided with a groove, and the outer surface of the first slider slides against the inner wall of the groove. By sliding the outer surface of the first slider against the inner wall of the groove, the first slider can slide along the inner wall of the groove.

[0009] Preferably, a fixing block is fixedly connected to the outer surface of the second underflow tube near the top, and four evenly arranged first circular holes are opened on the outer surface of the first slider. By setting the fixing block, the fixing block can restrict the position of the slide rail.

[0010] Preferably, the outer surface of the second underflow tube is provided with four evenly arranged second circular holes, and the outer surfaces of the four second sliders slide against the inner walls of the four first circular holes respectively. By sliding the outer surfaces of the second sliders against the inner walls of the first circular holes, the outer surfaces of the second sliders can penetrate the inner walls of the first circular holes.

[0011] Preferably, the surfaces of the four second sliders slide against the inner walls of the four second circular holes respectively, the outer surface of the hydrocyclone body is fixedly connected to a feed pipe, and the top of the hydrocyclone body is fixedly connected to an overflow pipe. By sliding the outer surface of the second slider against the inner wall of the second circular hole, the outer surface of the second slider can penetrate the inner wall of the second circular hole.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, by setting a second underflow pipe at the bottom of the first underflow pipe, when the bottom of the inner wall outlet of the second underflow pipe is gradually worn and the diameter becomes larger, the second underflow pipe can be disassembled by rotating the threaded rod to replace it with a new second underflow pipe, thereby ensuring that the size of the bottom outlet of the heavy medium cyclone is within a certain range, thereby reducing the production cost of the heavy medium cyclone for washing coal.

[0014] 2. In this utility model, by setting the second slider to slide into the first circular hole and the second circular hole at the same time, the second underflow tube and the first slider are limited and connected, thereby connecting the first underflow tube and the second underflow tube, thus ensuring the stability of the structure of the first underflow tube and the second underflow tube. Attached Figure Description

[0015] Figure 1 This utility model provides a frontal perspective view of a heavy medium cyclone separator for washing and preparing clean coal;

[0016] Figure 2 This utility model provides a frontal perspective view of the first underflow tube of a heavy medium cyclone separator for washing and preparing coal.

[0017] Figure 3 This utility model provides a front perspective perspective view of the chute of a heavy medium cyclone separator for washing and preparing coal.

[0018] Figure 4 This utility model provides a front-view perspective view of the slide rail of a heavy medium cyclone separator for washing and preparing coal.

[0019] Figure 5 This utility model provides a cross-sectional front view of the connecting block structure of a heavy medium cyclone for washing and preparing coal.

[0020] Figure 6 This utility model presents a frontal perspective view of the fixed block structure of a heavy medium cyclone for washing and preparing coal.

[0021] Legend: 1. Hydrocyclone body; 2. First underflow tube; 3. Threaded rod; 4. First limiting block; 5. First slider; 6. Connecting block; 7. Second slider; 8. Slide rail; 9. Second underflow tube; 10. Slide groove; 11. Fixing block; 12. First round hole; 13. Second round hole; 14. Feed pipe; 15. Overflow pipe; 16. Second limiting block. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Please see Figure 1-6 This utility model provides a technical solution: a heavy medium cyclone for washing and preparing coal, including a cyclone body 1, a first underflow pipe 2 fixedly connected to the bottom of the cyclone body 1, four evenly arranged threaded rods 3 rotatably connected to the outer surface of the first underflow pipe 2, a first limiting block 4 fixedly sleeved on the outer surface of each of the four threaded rods 3, a first slider 5 fixedly connected to the bottom of the first underflow pipe 2, and a connecting block 6 threadedly connected to the outer surface of each of the four threaded rods 3.

[0025] like Figure 1-5 As shown, a second underflow pipe 9 is provided at the bottom of the first underflow pipe 2, and a slide rail 8 is fixedly connected to one side of the outer surface of each of the four connecting blocks 6. The connecting blocks 6 are fixedly connected to the slide rail 8, and the slide rail 8 will move when the connecting blocks 6 move.

[0026] like Figure 3-6As shown, the inner walls of the four slide rails 8 are slidably connected to the second sliders 7, and one end of each of the four second sliders 7 is fixedly connected to the second limiting block 16. The outer surfaces of the four second sliders 7 are slidably connected to the inner walls of the four connecting blocks 6 respectively. The second sliders 7 are fixedly connected to the second limiting block 16. When the second sliders 7 slide, the second limiting block 16 can limit the sliding distance of the second sliders 7.

[0027] like Figure 1-6 As shown, a groove 10 is provided at the top of the second underflow pipe 9. The outer surface of the first slider 5 slides against the inner wall of the groove 10. By sliding the outer surface of the first slider 5 against the inner wall of the groove 10, the first slider 5 can slide along the inner wall of the groove 10.

[0028] like Figure 2-6 As shown, a fixing block 11 is fixedly connected to the outer surface of the second bottom flow pipe 9 near the top. The outer surface of the first slider 5 has four evenly arranged first circular holes 12. By setting the fixing block 11, the fixing block 11 can restrict the position of the slide rail 8.

[0029] like Figure 2-6 As shown, the outer surface of the second underflow tube 9 is provided with four evenly arranged second circular holes 13. The outer surfaces of the four second sliders 7 slide against the inner walls of the four first circular holes 12 respectively. By sliding the outer surfaces of the second sliders 7 against the inner walls of the first circular holes 12, the outer surfaces of the second sliders 7 can penetrate the inner walls of the first circular holes 12.

[0030] like Figure 1-3 As shown, the surfaces of the four second sliders 7 slide against the inner walls of the four second circular holes 13 respectively. The outer surface of the hydrocyclone body 1 is fixedly connected to the feed pipe 14, and the top of the hydrocyclone body 1 is fixedly connected to the overflow pipe 15. By sliding the outer surface of the second sliders 7 against the inner wall of the second circular holes 13, the outer surface of the second sliders 7 can penetrate the inner wall of the second circular holes 13.

[0031] The operating method and working principle of this device: During operation, a heavy medium hydrocyclone for washing and preparing clean coal is activated by starting the hydrocyclone body 1. Coal containing impurities is then fed into the feed pipe 14. The coal flows into the hydrocyclone body 1 through the feed pipe 14, generating centrifugal force inside the hydrocyclone body 1. This centrifugal force causes heavier impurities to flow towards the bottom of the hydrocyclone body 1, while lighter coal moves towards the center. The lighter coal flows out through the overflow pipe 15, while the heavier impurities, during their movement, flow through the first underflow pipe 2 into the second underflow pipe 9, and then out through the bottom outlet of the second underflow pipe 9. Over a prolonged period of time, the impurities rub against the inner wall of the second underflow pipe 9, generating… Wear and tear, over a long period of time, will cause the internal diameter of the second underflow tube 9 to gradually increase. When the internal diameter of the second underflow tube 9 becomes too large, it will affect the sorting accuracy of the hydrocyclone body 1. At this time, the second underflow tube 9 needs to be replaced. Rotating the threaded rod 3 will cause the connecting block 6 to move along the threaded outer surface of the threaded rod 3. When the connecting block 6 moves, it will cause the slide rail 8 to move. At the same time, when the connecting block 6 moves, it will cause the second limit block 16 to move. When the second limit block 16 moves, it will cause the second slider 7 to move. The outer surface of the second slider 7 will slide along the inner wall of the first circular hole 12 and the second circular hole 13 until the outer surface of the second slider 7 no longer contacts the inner wall of the second underflow tube 9. At this time, the rotation of the threaded rod 3 can be stopped. Remove the worn second underflow tube 9 and replace it with a new one. Move the new second underflow tube 9 towards the bottom of the first underflow tube 2 until the outer surface of the first slider 5 slowly slides to the inner wall of the groove 10, until the outer surface of the first slider 5 is completely in contact with the inner wall of the groove 10. Rotate the second underflow tube 9 to align the first round hole 12 with the second round hole 13. Then rotate the threaded rod 3. When the threaded rod 3 rotates, it will drive the outer surface of the connecting block 6 to move along the thread of the outer surface of the threaded rod 3. When the connecting block 6 moves, it will drive the slide rail 8 to move until one side of the outer surface of the slide rail 8 contacts the second underflow tube 9. At this time, the top of the slide rail 8 contacts the bottom of the fixing block 11. Move the second limiting block 16. When the second limiting block 16 moves... This will cause the second slider 7 to move. The outer surface of the second slider 7 will slide simultaneously on the inner wall of the connecting block 6 and the inner wall of the slide rail 8. The second slider 7 will slowly slide into the second circular hole 13, and then slide into the first circular hole 12 through the second circular hole 13. It will slowly slide out of the first circular hole 12 until the outer surface of the second limiting block 16 is completely in contact with one side of the outer surface of the connecting block 6. At this time, stop rotating the threaded rod 3. The movement of the second slider 7 is used to limit and fix the second underflow pipe 9. The second slider 7 is moved by rotating the threaded rod 3. The second underflow pipe 9 is replaced when the second slider 7 moves, thereby ensuring that the size of the bottom outlet of the heavy medium cyclone is within a certain range, thereby reducing the production cost of the heavy medium cyclone for washing coal.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A heavy medium cyclone separator for washing and preparing clean coal, comprising a cyclone body (1), characterized in that: The bottom of the hydrocyclone body (1) is fixedly connected to a first underflow tube (2). The outer surface of the first underflow tube (2) is rotatably connected to four evenly arranged threaded rods (3). The outer surfaces of the four threaded rods (3) are all fixedly fitted with first limiting blocks (4). The bottom of the first underflow tube (2) is fixedly connected to a first slider (5). The outer surfaces of the four threaded rods (3) are all threadedly connected to connecting blocks (6). The bottom of the first underflow tube (2) is provided with a second underflow tube (9). The outer surfaces of one side of the four connecting blocks (6) are all fixedly connected to slide rails (8). The inner walls of the four slide rails (8) are all slidably connected to second sliders (7). One end of the four second sliders (7) is fixedly connected to a second limiting block (16). The outer surfaces of the four second sliders (7) are slidably connected to the inner walls of the four connecting blocks (6). The top of the second underflow tube (9) is provided with a groove (10). The outer surface of the first slider (5) slides against the inner wall of the groove (10).

2. A heavy medium cyclone separator for washing and preparing clean coal according to claim 1, characterized in that: A fixing block (11) is fixedly connected to the outer surface of the second underflow pipe (9) near the top, and four evenly arranged first circular holes (12) are opened on the outer surface of the first slider (5).

3. A heavy medium cyclone separator for washing and preparing clean coal according to claim 2, characterized in that: The outer surface of the second underflow tube (9) is provided with four evenly arranged second circular holes (13), and the outer surfaces of the four second sliders (7) slide against the inner walls of the four first circular holes (12).

4. A heavy medium cyclone separator for washing and preparing clean coal according to claim 3, characterized in that: The surfaces of the four second sliders (7) slide against the inner walls of the four second circular holes (13), the outer surface of the hydrocyclone body (1) is fixedly connected to the feed pipe (14), and the top of the hydrocyclone body (1) is fixedly connected to the overflow pipe (15).

Images