Anti-wear mechanism for pneumatic ash conveying

Abstract

The utility model discloses a pneumatic dust conveying anti-abrasion mechanism. Including the tubular body, the inside rotation of tubular body is provided with the rotation ring, the upper surface of tubular body is provided with the package shell, the middle part rotation of tubular body is provided with the abrasion ring, the side of abrasion ring is provided with the arc strip, the number of arc strip has a plurality, one side of abrasion ring is provided with drive mechanism, drive mechanism includes horizontal shift block and round block, one side of tubular body is provided with the opening, the surface slip of opening is provided with horizontal shift block, can make airflow impact on abrasion ring through abrasion ring, reach the effect of protecting tubular body, the effect of drive control ring through rotation ring makes drive strip move left and right, finally control horizontal shift block and reciprocate, and only one direction can drive abrasion ring to rotate through the round block of the design of horizontal shift block, and abrasion ring can continue switching in the adjusting position and maintaining position, reach the effect of replacing the abrasion position.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic ash conveying technology. Specifically, it is a pneumatic ash conveying anti-wear mechanism. Background Technology

[0002] In coal-fired power generation technology, a large amount of dust is generated during fuel combustion. Existing technologies can use pneumatic ash conveying to transport dust and smoke through pipes via gas, thus carrying the dust and smoke to designated equipment. As an essential component in the field of ventilation and dust removal technology for environmental protection equipment, the wear resistance of elbows is closely related to dust removal efficiency. Due to the high temperature, high speed of gas, and dust particle scouring in the ash conveying environment, the middle part of the elbow is extremely prone to wear, and the service life of a new elbow is relatively short. Existing technologies usually use a wear-resistant structure to be installed on the elbow, but this structure is prone to wear due to prolonged use and airflow impacting a certain position, resulting in a short service life. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to provide a pneumatic ash conveying anti-wear mechanism, which allows the airflow to impact the wear ring, thereby protecting the pipe body. The wear ring can be continuously switched between an adjustable position and a maintained position to achieve the effect of changing the wear position.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] The device includes a tube body, an internal rotating ring, a packaging shell on the upper surface of the tube body, a wear ring in the middle of the tube body, and multiple arc-shaped strips on the sides of the wear ring. A driving mechanism is located on one side of the wear ring, comprising a transverse block and a circular block. An opening is located on one side of the tube body, a transverse block is slidably mounted on the surface of the opening, and a circular block is slidably mounted on one side of the transverse block. A return spring is located between the transverse block and the circular block, and one side of the circular block contacts the arc-shaped strips.

[0006] The technical solution of this utility model has achieved the following beneficial technical effects:

[0007] The wear ring allows airflow to impact it, protecting the tube body. The rotating ring drives the control ring, causing the drive bar to move left and right, ultimately controlling the transverse block to move back and forth. The transverse block, with its designed circular blocks, allows the wear ring to rotate in only one direction, while the other direction does not affect the movement of the wear ring. This allows the wear ring to adjust its position for a certain period of time and maintain that position for a certain period of time after adjustment. This continuous switching between the adjusted and maintained positions achieves the effect of changing the wear position. Attached Figure Description

[0008] Figure 1 Schematic diagram of the cross-sectional structure of the tube body of this utility model;

[0009] Figure 2 A schematic diagram of a partial cut of the tube body of this utility model;

[0010] Figure 3 Schematic diagram of the internal structure of the tube in this utility model;

[0011] Figure 4 This utility model is shown in the cross-sectional view of the horizontal block.

[0012] The reference numerals in the figure are as follows: 1. Pipe body; 2. Rotating ring; 3. Packaging shell; 4. Wear ring; 5. Arc-shaped strip; 6. Horizontal block; 7. Round block; 8. Opening; 9. Return spring; 10. Linkage rod; 11. Disassembly frame; 12. Control ring; 13. Large gear ring; 14. Control groove; 15. Drive bar; 16. Round hole; 17. Rotating blade; 18. Flange. Detailed Implementation

[0013] This implementation example is attached to the instruction manual. Figure 1 As shown, flanges are located on both sides of the pipe body 1. The function of the flanges is to ensure that the pipe body 1 can connect two vertical pipes as a joint. A rotating ring 2 is set near the air inlet end of the pipe body 1, and a wear ring 4 is set in the middle. Both the rotating ring 2 and the wear ring 4 are rotatably set on the pipe body 1, but their positions are different. At the same time, the rotating ring 2 and the sealing ring in this design have internal extension structures on both sides of the pipe body 1 to keep them rotating in a certain position. The wear ring 4 is made of ceramic, which can guide the airflow impact on the surface. As time goes by, the wear ring 4 will continue to wear at the point where the airflow impacts. On one side of the pipe body 1 (the shape of the rotating blade 17 is not unique and can also be designed as a fan blade), it can also play a role in buffering the airflow impact.

[0014] As per the instruction manual Figure 2 As shown, in Figure 1To enable the wear ring 4 in this design to automatically adjust its position and maintain its position for a period of time, a large toothed groove is provided on the outer side of the rotating ring 2, and a detachable disassembly frame 11 is provided on the top of the tube body 1. The disassembly frame 11 can be installed by welding or threaded connection. Welding is more difficult to disassemble, so the threaded connection is the best option. Figure 2 The image shows welding, so the disassembly frame 11 is essentially fixedly mounted on the pipe body 1. A control ring 12 and a linkage rod 10 are rotatably mounted above the disassembly frame 11. The disassembly frame 11 is equipped with a corresponding limit rotation structure, which allows the disassembly frame 11 to support the rotation of the control ring 12 and the linkage rod 10. One side of the linkage rod 10 is engaged with a large gear ring 13, and the other side of the linkage rod 10 is engaged with the control ring 12 (the inner wall of the control ring 12 is also equipped with a small gear ring. The small gear ring is small, and the gear transmission ratio makes the control ring 12 rotate faster). Therefore, the rotating ring 2 can drive the control ring 12 to rotate, and the control ring 12 rotates relatively slowly.

[0015] As per the instruction manual Figure 3 The control ring 12 has a control groove 14 on its outer side (the control groove 14 is a groove connected end to end with a spiral path, having a high point and a low point). A drive bar 15 overlaps the surface of the control groove 14. The drive bar 15 is slidably mounted on the disassembly frame 11, and the sliding direction is parallel to the control ring 12. Therefore, as the control ring 12 rotates, the drive bar 15 has to change position on the control groove 14, that is, the trajectory of the drive bar 15 is left and right movement (see the attached instruction manual). Figure 2 );

[0016] An opening 8 is provided above the tube body 1. A transverse block 6 is slidably disposed on the surface of the opening 8. The sliding direction of the transverse block 6 is parallel to the rotation center of the wear ring 4. Since the tube body 1 is an arc-shaped connecting tube, the sliding direction between the driving bar 15 and the transverse block 6 is definitely not parallel. In order to enable the driving bar 15, which moves left and right, to simultaneously drive the transverse block 6 to move left and right, a circular hole 16 is provided below the driving bar 15, which is perpendicular to the transverse block 6. This allows the upper end of the transverse block 6 to slide along the circular hole 16. Thus, as the driving bar 15 moves left and right, it can drive the transverse block 6 to slide left and right in a specific direction. The upper end of the transverse block 6 slides with the circular hole 16, achieving a sliding connection and the ability to move together.

[0017] As per the instruction manual Figure 4 As shown, the instruction manual is attached. Figure 4 At least the wear ring 4 is partially shown. The lateral moving block 6 moves laterally left and right along the opening 8, corresponding to the instruction manual. Figure 4During the vertical movement, the horizontal block 6 moves to the bottom, meaning it's about to move upwards. Since the return spring 9 is stretched, it will reset, causing the circular block 7 to move to the right. Upon reaching the rightmost position, the circular block 7 moves upwards and intersects the lower side of the arc-shaped strip 5. The circular block 7 can no longer move to the right. In contact with the inclined plane (the lower side of the arc-shaped strip 5 is an inclined plane, and the arc-shaped strip 5 is arranged in a circular array around the rotation center), the circular block 7 still needs to move upwards, forcing the wear ring 4 to rotate along the tube body 1. This means that the upward movement of the circular block 7 allows the wear ring 4 to rotate at a certain angle. As the circular block 7 reaches the top, it will disengage from the arc-shaped strip 5. The vertical movement of the circular block 7 covers a portion of the vertical height of the arc-shaped strip 5. Subsequently, the circular block 7 will move downwards, reaching the position indicated in the instruction manual. Figure 4 At the initial position, after the next arc-shaped strip 5 has rotated, the circular block 7 moves downward and contacts the upper side wall of the next arc-shaped strip 5. Since the force of the return spring 9 is very small and insufficient to rotate the wear ring 4, the circular block 7 moves to the left under the pushing action of the upper side wall of the arc-shaped strip 5. This is what was initially described as the return spring 9 being stretched, reaching the position indicated in the instruction manual. Figure 4 At the initial position, it completes a set of movements, first upward and then downward. In summary, the vertical positions above the left arc bar 5 and below the right arc bar 5 coincide, so that the circular block 7 can only drive the wear ring 4 to cycle along a specific trajectory.

[0018] In summary, the vertical movement of the horizontal block 6 can only drive the wear ring 4 to rotate in one direction (see instruction manual). Figure 4 (The middle is upward), but the control ring 12 rotates more slowly in this scheme, so the wear ring 4 stays for a longer time. After the wear ring 4 is replaced, it stops moving and then rotates to adjust its position to complete the cycle.

[0019] Meanwhile, as the position of the wear ring 4 is adjusted, the location where the airflow impacts the wear ring 4 can be varied, thus improving the performance of the wear ring 4.

[0020] The inner side of the wear ring 4 has an inclined angle to facilitate the airflow impacting the surface and being guided;

[0021] Wear ring 4 can also be driven by a motor, but a toothed groove needs to be set on one side of wear ring 4, and the motor does not have a self-locking function.

[0022] A rotating ring 2 is rotatably arranged inside the tube body 1. A packaging shell 3 is provided on the upper surface of the tube body 1. A wear ring 4 is rotatably arranged in the middle of the tube body 1. An arc-shaped strip 5 is provided on the side of the wear ring 4. There are multiple arc-shaped strips 5. A driving mechanism is provided on one side of the wear ring 4. The driving mechanism includes a transverse block 6 and a circular block 7. An opening 8 is provided on one side of the tube body 1. A transverse block 6 is slidably arranged on the surface of the opening 8. A circular block 7 is slidably arranged on one side of the transverse block 6. A return spring 9 is provided between the transverse block 6 and the circular block 7. One side of the circular block 7 contacts the arc-shaped strip 5. A disassembly mechanism is provided on the upper surface of the tube body 1. The disassembly mechanism includes a linkage rod 10, a disassembly frame 11, and a control ring 12. The outer surface of the rotating ring 2... A large gear ring 13 is provided on the side, and a linkage rod 10 is engaged on the surface of the large gear ring 13. A disassembly frame 11 is installed on the upper surface of the pipe body 1. A linkage rod 10 is rotatably provided on the lower side of the disassembly frame 11. A control ring 12 is rotatably provided in the middle of the disassembly frame 11. A control ring 12 is engaged on one side of the linkage rod 10. A control groove 14 is provided on the outer side of the control ring 12. A drive bar 15 overlaps on the surface of the control groove 14. The drive bar 15 is slidably provided on one side of the disassembly frame 11. A round hole 16 is provided on one side of the drive bar 15. A transverse block 6 is slidably provided on the surface of the round hole 16. The wear ring 4 is made of ceramic. A rotating blade 17 is provided on the inner wall of the rotating ring 2. Flanges 18 are provided at both ends of the pipe body 1.

[0023] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A pneumatic ash conveying anti-wear mechanism, characterized in that, The tube (1) includes a rotating ring (2) inside the tube (1), a packaging shell (3) on the upper surface of the tube (1), a wear ring (4) in the middle of the tube (1), an arc strip (5) on the side of the wear ring (4), and multiple arc strips (5). A driving mechanism is provided on one side of the wear ring (4), the driving mechanism includes a transverse block (6) and a round block (7). An opening (8) is provided on one side of the tube (1), a transverse block (6) is slidably provided on the surface of the opening (8), a round block (7) is slidably provided on one side of the transverse block (6), a return spring (9) is provided between the transverse block (6) and the round block (7), and an arc strip (5) is in contact with one side of the round block (7).

2. The pneumatic ash conveying anti-wear mechanism according to claim 1, characterized in that, The upper surface of the tube (1) is provided with a disassembly mechanism, which includes a linkage rod (10), a disassembly frame (11), and a control ring (12).

3. The pneumatic ash conveying anti-wear mechanism according to claim 2, characterized in that, A large gear ring (13) is provided on the outer side of the rotating ring (2), and a linkage rod (10) is engaged on the surface of the large gear ring (13). A disassembly frame (11) is installed on the upper surface of the tube body (1).

4. The pneumatic ash conveying anti-wear mechanism according to claim 2, characterized in that, A linkage rod (10) is rotatably provided on the lower side of the disassembly frame (11), and a control ring (12) is rotatably provided in the middle of the disassembly frame (11).

5. The pneumatic ash conveying anti-wear mechanism according to claim 2, characterized in that, A control ring (12) is engaged on one side of the linkage rod (10), and a control groove (14) is provided on the outer side of the control ring (12).

6. The pneumatic ash conveying anti-wear mechanism according to claim 5, characterized in that, The surface of the control slot (14) is covered with a drive bar (15), which is slidably disposed on one side of the disassembly frame (11).

7. The pneumatic ash conveying anti-wear mechanism according to claim 6, characterized in that, A circular hole (16) is provided on one side of the drive bar (15), and a transverse block (6) is slidably provided on the surface of the circular hole (16).

8. The pneumatic ash conveying anti-wear mechanism according to claim 1, characterized in that, The wear ring (4) is made of ceramic.

9. The pneumatic ash conveying anti-wear mechanism according to claim 1, characterized in that, The inner wall of the rotating ring (2) is provided with rotating blades (17).

10. The pneumatic ash conveying anti-wear mechanism according to claim 1, characterized in that, Flanges (18) are provided at both ends of the pipe body (1).

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