Wear-resistant dust removal filter bag

Abstract

The utility model relates to the technical field of dust removal equipment, in particular to a wear-resistant dust removal filter bag which comprises a cage body and a bag body, the cage body comprises vertical rods, each vertical rod is provided with a sunken area, the sunken areas are arranged in the length direction of the vertical rods, and the section of each sunken area is of a half-ring-shaped structure; a plurality of balls used for reducing friction when the bag body makes contact with the vertical rods are arranged in the concave area, a plurality of air bag blocks used for supporting the balls are arranged in the concave area, the air bag blocks are arranged in the concave area in an array mode, and base plates used for supporting the balls to rotate are arranged at the ends, away from the concave area, of the air bag blocks. A frame body is arranged on the base plate, a vertical shaft used for rotation of the balls is arranged in the frame body, the device further comprises an air pump communicated with the air bag block through an air pipe, and a deflation valve is arranged on the air bag block, so that friction between the bag body and the vertical rod can be reduced.

Description

Technical Field

[0001] This application relates to the field of dust removal equipment technology, and in particular to a wear-resistant dust removal filter bag. Background Technology

[0002] In industrial production, baghouse dust collectors are a commonly used dust removal device, widely applied in various dust control scenarios. Pulse jet cleaning is a common cleaning method in baghouse dust collectors. Its principle is to use a burst of high-pressure airflow to cause the filter bags to expand and contract rapidly, thus shaking off the dust adhering to the filter bag surface. However, in actual operation, due to excessively high jet pressure and too frequent jetting, the filter bags will frequently come into contact with and move relative to the cage during the cleaning process. Specifically, the contact points between the filter bags and the vertical rods of the cage will frequently undergo folding, stretching, and other deformations. This deformation will lead to significant friction between the filter bags and the vertical rods. Long-term friction will gradually wear down the surface of the filter bags, even causing damage, significantly shortening the service life of the filter bags and increasing equipment maintenance costs and downtime.

[0003] Chinese patent application number 2021220713346 discloses a wear-resistant dust collector filter bag, including a filter bag body and a cage frame. A rubber ring is fixedly connected to the top outer wall of the filter bag body, and an mounting cylinder is provided on the outside of the filter bag body. A fixing ring is welded to the inner side of the middle of the cage frame, and a rotating cylinder is rotatably connected to the outer wall of the fixing ring. A rotating plate is fixedly connected to the outer wall of the rotating cylinder, and anti-scratch blocks are provided on both sides of the rotating plate. A fixing block is fixedly connected to the top of the cage frame, and an mounting plate is engaged with the outer wall of the fixing block. A fixing hole is provided on the top of the mounting plate. With this wear-resistant dust collector filter bag, the cage frame can be spliced ​​according to the usage length. The cage frame can be spliced ​​and used by directly aligning and engaging the fixing blocks and fixing holes of two sections of the cage frame and rotating them.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: the aforementioned patent reduces the friction between the bag and the cage frame by using anti-friction blocks. Utility Model Content

[0005] To reduce friction between the bag and the vertical rod, this application provides a wear-resistant dust collector filter bag.

[0006] This application provides a wear-resistant dust collector filter bag, which adopts the following technical solution: it includes a cage and a bag body. The cage includes vertical rods, each of which is provided with a recessed area. The recessed area is arranged along the length of the vertical rod, and the cross-section of the recessed area is a half-ring structure. Multiple balls are provided in the recessed area to reduce friction when the bag body contacts the vertical rod. Multiple airbag blocks are provided in the recessed area to support the balls. Multiple airbag blocks are arranged in an array in the recessed area. A pad for supporting the rotation of the balls is provided at the end of the airbag block away from the recessed area. A frame is provided on the pad. A vertical shaft for the rotation of the balls is provided in the frame. It also includes an air pump connected to the airbag block through an air pipe. An air release valve is provided on the airbag block.

[0007] Optionally, an annular groove is provided within the frame, and a rotating frame is rotatably connected within the annular groove. A bracket for supporting the rotating frame is provided within the annular groove. Multiple brackets are arranged symmetrically around the center of the circle containing the annular groove. Rollers are rotatably connected to the brackets. The rotating frame is provided with grooves that cooperate with the rollers. The vertical axis is located at the center line of the rotating frame. When the bag comes into contact with the vertical rod during pulse cleaning, the ball bearings will rotate along the direction of the bag under the action of the vertical axis and the rotating frame to reduce the friction of the bag.

[0008] Optionally, a protruding ring is provided inside the frame, and a sliding groove that cooperates with the protruding ring is provided on the rotating frame.

[0009] Optionally, elastic ropes are provided in the recessed area and on both sides of each airbag block, with one end of the elastic rope connected to the pad, and an elastic net is fitted over the outside of the airbag block.

[0010] Optionally, the vertical rod is a hollow structure, with an air tube placed inside. An air seat communicating with the airbag block is provided on the vertical rod, and the air tube is connected to the air seat through a branch tube. The vertical rod is provided with multiple through holes for the branch tube to pass through, and the through holes are arranged in an array. The vertical rod is provided with a side plate that can be opened or closed.

[0011] In summary, this application includes the following beneficial technical effects:

[0012] 1. By setting ball bearings in the recessed area of ​​the vertical rod, the sliding friction between the bag body and the vertical rod is converted into rolling friction, which greatly reduces the friction coefficient. Under the action of the vertical shaft and the rotating frame, the ball bearings can rotate flexibly along the force direction of the bag body, further improving the friction reduction effect. The setting of the air bag block enables the filter bag to be effectively buffered and protected during pulse cleaning and adsorption.

[0013] 2. The ring groove, rotating frame, support, and rollers within the frame work together to ensure stable rotation of the rotating frame, guaranteeing the flexibility and stability of the ball bearings during operation; the cooperation between the convex ring and the sliding groove further enhances the rotational stability of the rotating frame.

[0014] 3. The elastic ropes on both sides of the airbag block in the recessed area and the elastic netting on the outside of the airbag block can promptly collect the airbag block when it is deflated. The vertical rod adopts a hollow structure and is equipped with side plates that can be opened or closed, making the installation and maintenance of the air tube more convenient. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of a wear-resistant dust collector filter bag according to this application;

[0016] Figure 2 This is an enlarged view of section A of a wear-resistant dust collector filter bag according to this application;

[0017] Figure 3 This is an enlarged view of section B of a wear-resistant dust collector filter bag according to this application;

[0018] Figure 4 This is a cross-sectional view of a wear-resistant dust collector filter bag frame according to this application;

[0019] Figure 5 This is a front view of a wear-resistant dust collector filter bag vertical rod according to this application.

[0020] Reference numerals: 1. Bag body, 2. Vertical rod, 3. Recessed area, 4. Ball bearing, 5. Airbag block, 6. Pad plate, 7. Frame body, 8. Vertical shaft, 9. Air pipe, 10. Ring groove, 11. Rotating frame, 12. Support, 13. Roller, 14. Groove, 15. Convex ring, 16. Slide groove, 17. Elastic rope, 18. Elastic net, 19. Through hole, 20. Side plate, 21. Branch pipe, 22. Air seat. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0022] This application discloses a wear-resistant dust collector filter bag. For example... Figure 1 , 2As shown in Figure 3, the device includes a cage and a bag 1. The cage includes vertical rods 2 and horizontal rings. There are multiple vertical rods 2, which are evenly spaced around the circumference of the horizontal rings. Each vertical rod 2 has a recessed area 3 on the side away from the horizontal ring. The recessed area 3 is arranged along the length of the vertical rod 2, and its cross-section is a half-ring structure. There are multiple ball bearings 4 in the recessed area 3 to reduce friction when the bag 1 contacts the vertical rod 2. There are also multiple airbag blocks 5 in the recessed area 3 to support the ball bearings 4. The airbag blocks 5 are arranged in an array within the recessed area 3. A pad 6 is provided at the end of the airbag block 5 away from the recessed area 3 to support the rotation of the ball bearings 4. A frame 7 is fixed to the pad 6 with screws. An annular groove 10 is provided in the frame 7. A rotating frame 11 is rotatably connected to the annular groove 10. The rotating frame 11 has a ring structure. A bracket 12 for supporting the rotating frame 11 is fixed with screws inside the annular groove 10. The bracket 12 is U-shaped, and there are multiple brackets 12 arranged symmetrically around the circle containing the annular groove 10. A roller 13 is rotatably connected to the bracket 12. The rotating frame 11 is provided with a groove 14 that cooperates with the roller 13, so that the rotating frame 11 can rotate horizontally under the action of the roller 13 and the bracket 12. A vertical shaft 8 for the vertical rotation of the ball bearing 4 is detachably connected inside the frame 7. The vertical shaft 8 is located at the center line of the rotating frame 11. A convex ring 15 is provided inside the frame 7. The convex ring 15 is an integral structure with the frame 7. A sliding groove 16 that cooperates with the convex ring 15 is provided on the rotating frame 11. It also includes an air pump that is connected to the airbag block 5 through an air pipe 9. The airbag block 5 is provided with a deflation valve. The deflation valve is prior art. When the deflation valve receives a set pressure, the valve opens. When the bag 1 moves away from the vertical rod 2 under air pressure, the airbag block 5 inflates. When the bag 1 moves closer to the vertical rod 2 under the adsorption effect, the airbag block 5 is squeezed and deflated, which slows down the movement speed of the bag 1.

[0023] In one embodiment, according to the appendix Figure 3 As shown, the vertical rod 2 is a hollow structure, and an air tube 9 is placed inside the vertical rod 2. An air seat 22, which communicates with the airbag block 5, is fixed to the vertical rod 2 with screws. The air seat 22 is existing technology, and there are multiple air seats 22, each corresponding to one airbag block 5. The air tube 9 is connected to the air seat 22 through a branch pipe 21. Elastic ropes 17 are provided on both sides of the air seat 22, and one end of the elastic rope 17 is connected to the pad 6. An elastic net 18 is sleeved on the outside of the airbag block 5. One end of the elastic net 18 is connected to the air seat 22, and the other end is connected to the pad 6. Both the elastic rope 17 and the elastic net 18 are existing technology.

[0024] In one embodiment, according to the appendix Figure 1 and 5 As shown, the vertical rod 2 is provided with through holes 19 for the branch pipe 21 to pass through. There are multiple through holes 19 and they are distributed in an array. A side plate 20 that can be opened or closed is hinged to the vertical rod 2 to facilitate the inspection and installation of the air pipe 9.

[0025] The implementation principle of a wear-resistant dust collector filter bag according to an embodiment of this application is as follows: The bag body 1 is installed on the cage body, ensuring a tight fit between the bag body 1 and the vertical rod 2 of the cage body. Simultaneously, the air pump is connected to the air pipe 9, and the connections of each component are checked for secureness to ensure unobstructed airflow. When the dust collector requires pulse cleaning, the air pump is started, inflating the airbag block 5. After the airbag block 5 inflates, it pushes the pad 6 and the ball bearings 4 upwards, and the high-pressure airflow blows onto the bag body 1. Under the action of the airflow, the bag body 1 rapidly expands and then contracts. Due to the presence of the ball bearings 4, the friction between the bag body 1 and the vertical rod 2 is converted into rolling friction. Simultaneously, the ball bearings 4 can rotate along the direction of force on the bag body 1 under the action of the vertical shaft 8 and the rotating frame 11, further reducing friction. During this process, the airbag block 5 is deflated under the pressure of the bag body 1 and acts as a buffer, preventing rigid collisions between the bag body 1 and the vertical rod 2. The elastic rope 17 and elastic net 18 are used to collect the deflated airbag block 5.

[0026] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wear resistant dust filter bag comprising a cage and a bag body (1), characterized in that: The cage includes vertical rods (2), each of which has a recessed area (3). The recessed area (3) is arranged along the length of the vertical rod (2). The cross-section of the recessed area (3) is a half-ring structure. The recessed area (3) is provided with a ball bearing (4) to reduce friction when the bag body (1) contacts the vertical rod (2). There are multiple balls bearing (4). The recessed area (3) is provided with an airbag block (5) to support the ball bearing (4). There are multiple airbag blocks (5) and they are arranged in an array in the recessed area (3). The end of the airbag block (5) away from the recessed area (3) is provided with a pad (6) to support the rotation of the ball bearing (4). The pad (6) is provided with a frame (7). The frame (7) is provided with a vertical shaft (8) for the rotation of the ball bearing (4). The cage also includes an air pump connected to the airbag block (5) through an air pipe (9). The airbag block (5) is provided with a deflation valve.

2. A wear resistant dust filtration bag according to claim 1, characterized in that: The frame (7) is provided with an annular groove (10), and a rotating frame (11) is rotatably connected in the annular groove (10). A bracket (12) for supporting the rotating frame (11) is provided in the annular groove (10). There are multiple brackets (12) and they are arranged symmetrically along the circle where the annular groove (10) is located. A roller (13) is rotatably connected on the bracket (12). A groove (14) for cooperating with the roller (13) is provided on the rotating frame (11). The vertical shaft (8) is located at the center line of the rotating frame (11). When the bag body (1) contacts the vertical rod (2) during the pulse cleaning process, the ball (4) will rotate along the direction of the bag body (1) under the action of the vertical shaft (8) and the rotating frame (11) to reduce the friction of the bag body (1).

3. A wear resistant dust filtration bag according to claim 2, wherein: The frame (7) is provided with a protruding ring (15), and the rotating frame (11) is provided with a sliding groove (16) that cooperates with the protruding ring (15).

4. A wear resistant dust filtration bag according to claim 1, wherein: Elastic ropes (17) are provided in the recessed area (3) and on both sides of each airbag block (5). One end of the elastic rope (17) is connected to the pad (6), and an elastic net (18) is provided on the outside of the airbag block (5).

5. A wear resistant dust filtration bag according to claim 1, wherein: The vertical rod (2) is a hollow structure. An air tube (9) is placed inside the vertical rod (2). An air seat (22) communicating with the airbag block (5) is provided on the vertical rod (2). The air tube (9) is connected to the air seat (22) through a branch pipe (21). A through hole (19) for the branch pipe (21) to pass through is provided on the vertical rod (2). There are multiple through holes (19) and they are arranged in an array. A side plate (20) that can be opened or closed is provided on the vertical rod (2).

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