Composite high-temperature-resistant filter bag

Abstract

The utility model discloses a composite high-temperature-resistant filter bag, which comprises a filter bag body and a fixing plate, the fixing plate is provided with an installation device, the filter bag body comprises a filter cartridge, a conical connecting part and an annular pressing part, and the filter cartridge, the conical connecting part and the annular pressing part respectively comprise an inner lining cloth, a high-temperature-resistant layer and a wear-resistant layer. The high-temperature-resistant layer is arranged in the high-temperature-resistant filter bag body, the high-temperature-resistant performance of the filter bag body can be improved, the organic silicon cushion layer is arranged at the position of the suture line, stitches at the position of the suture line are effectively shielded, and therefore the high-temperature-resistant filter bag body is not prone to falling off, and the service life of the high-temperature-resistant filter bag body is prolonged. And dust is prevented from penetrating through stitches at the suture line.

Description

Technical Field

[0001] The utility model relates to the technical field of filter bags, and more specifically, to a composite high-temperature resistant filter bag. Background Art

[0002] Filter bags are generally installed in dust collectors to remove dust from industrial waste gas. Some industrial waste gases have a high temperature, and at this time, high-temperature resistant filter bags are required for dust removal and filtration. The current filter bags generally include a filter bag cylinder with one end open, and a connecting piece is bent outward at the open end of the filter bag cylinder. When installing the filter bag, the filter bag is placed in a preset through hole on the fixing plate, and the connecting piece is placed on the upper surface of the fixing plate. Then, a pressing plate is pressed on the upper surface of the connecting piece, and the pressing plate and the fixing plate are connected by bolts. The time required for installation and disassembly by the bolt connection method is relatively long; in addition, when the filter bag is produced, there are generally stitching lines. The stitch hole diameter at the stitching line is larger than the gap between the fibers inside the filter bag, resulting in dust being easily introduced into the filter bag from the stitches of the stitching line, resulting in poor filtration effect. Content of the Utility Model

[0003] (I) Technical Problems to be Solved

[0004] In view of the problems existing in the prior art, the utility model provides a composite high-temperature resistant filter bag to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solutions

[0006] To achieve the above object, the utility model provides the following technical solution: a composite high-temperature resistant filter bag, including a filter bag body and a fixing plate. An installation device is provided on the fixing plate. The filter bag body includes a filter cylinder, a conical connecting part, and an annular pressing part. The filter cylinder, the conical connecting part, and the annular pressing part all include an inner lining cloth, a high-temperature resistant layer, and a wear-resistant layer. The high-temperature resistant layer is needled on one side of the inner lining cloth, and the wear-resistant layer is needled on the side of the high-temperature resistant layer away from the inner lining cloth. The inner lining cloth is formed by composite needling of polyphenylene sulfide short cut filaments, polytetrafluoroethylene short cut filaments, and aramid fibers. The high-temperature resistant layer is formed by needling of polyester fiber short cut filaments and polyimide short cut filaments. The wear-resistant layer is formed by needling of polyphenylene sulfide short cut filaments and glass fiber short cut filaments. Stitching lines are provided on the filter bag body, and silicone pads are provided on both the inner and outer sides of the stitching lines.

[0007] The present utility model is further configured such that the installation device includes a pressing plate, a connecting rod, and a clamping mechanism. A first through hole is provided on the fixing plate, and a first conical surface cooperating with the conical connecting portion is provided at the first through hole. A pressing block is provided on the lower surface of the pressing plate, and a second conical surface cooperating with the conical connecting portion is provided on the outer side of the pressing block. An annular pressing portion is provided between the fixing plate and the pressing plate. The connecting rod is fixedly provided on the upper surface of the fixing plate. An installation hole cooperating with the connecting rod is provided on the pressing plate, and the clamping mechanism is provided on the pressing plate, and the connecting rod is connected to the clamping mechanism.

[0008] The present utility model is further configured such that the clamping mechanism includes a connecting sleeve, a fixing ring, an insertion rod, a moving block, a guiding rod, a moving ring, a pressing rod, and a limiting mechanism. The connecting sleeve is fixedly provided on the upper surface of the pressing plate. The fixing ring is fixedly sleeved on the outer side of the connecting sleeve. One side of the moving block is fixedly connected to the insertion rod, and the other side is fixedly connected to the guiding rod. The insertion rod penetrates through the connecting sleeve and is slidably connected to the connecting sleeve. The guiding rod penetrates through the fixing ring and is fixedly connected to the fixing ring. A spring is provided outside the guiding rod, and the two ends of the spring are respectively fixedly connected to the moving block and the fixing ring. The moving ring is slidably and non-rotatably sleeved on the outer side of the connecting sleeve. The top end of the pressing rod is connected to the lower surface of the moving ring, and the bottom end of the pressing rod is in contact with the moving block. A third conical surface is provided on the moving block, and a slot cooperating with the insertion rod is provided on the connecting rod.

[0009] The present utility model is further configured such that the limiting mechanism includes a rotating rod and a limiting block. The limiting block is fixedly provided near the top end of the rotating rod. A limiting groove cooperating with the rotating rod and the limiting block is provided on the moving ring.

[0010] The present utility model is further configured such that second through holes are provided on the pressing plate and the pressing block.

[0011] The present utility model is further configured such that a framework is provided on the lower surface of the pressing block.

[0012] The present utility model is further configured such that a handle is provided on the upper surface of the pressing plate.

[0013] The present utility model is further configured such that a plurality of the connecting rods and the clamping mechanisms are provided, and both are connected to the fixing plate and the pressing plate.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the present utility model provides a composite high-temperature resistant filter bag, which has the following beneficial effects:

[0016] 1. In the present utility model, a conical connecting part and an annular pressing part are provided on the filter bag body. The conical connecting part is fixed by pressing with a first conical surface and a second conical surface, and the annular pressing part is fixed by pressing with a pressing plate and a fixing plate. This method can improve the connection stability and prevent the filter bag body from falling off between the fixing plate and the pressing plate.

[0017] 2. In the present utility model, the pressing plate and the fixing plate are connected and fixed through a clamping mechanism, eliminating the need to screw multiple bolts, saving time and effort, and facilitating the installation or replacement of the filter bag body.

[0018] 3. A limiting mechanism is provided in the clamping mechanism. When the clamping mechanism is loosened, it can be limited by the limiting mechanism, facilitating the sequential loosening of several clamping mechanisms and then removing the pressing plate from the fixing plate without the need for multiple people to cooperate and remove it simultaneously.

[0019] 4. In the present utility model, a high-temperature resistant layer is provided, which can improve the high-temperature resistant performance of the filter bag body. An organosilicon cushion layer is provided at the suture line to effectively shield the stitches at the suture line and prevent dust from passing through the stitches at the suture line. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of a composite high-temperature resistant filter bag in the present utility model;

[0021] Figure 2 is a schematic diagram of the structure of the filter cartridge, conical connecting part and annular pressing part in the present utility model;

[0022] Figure 3 is a schematic diagram of the structure of the clamping mechanism in the present utility model;

[0023] Figure 4 is a schematic diagram of the connection structure between the moving ring and the moving block in the present utility model;

[0024] Figure 5 is a schematic diagram of the structure of the pressing plate and the fixing plate in the unconnected state in the present utility model;

[0025] Figure 6 is in the present utility model Figure 5 a schematic diagram of another angle;

[0026] Figure 7 is a schematic diagram of the composition of the filter cartridge, conical connecting part and annular pressing part in the present utility model.

[0027] In the figure: 1. Filter bag body; 2. Fixed plate; 3. Filter cartridge; 4. Conical connecting part; 5. Annular pressing part; 6. Inner lining cloth; 7. High-temperature resistant layer; 8. Wear-resistant layer; 9. Suture; 10. Silicone gasket; 11. Pressing plate; 12. Connecting rod; 13. First through hole; 14. First conical surface; 15. Pressing block; 16. Second conical surface; 17. Mounting hole; 18. Connecting sleeve; 19. Fixed ring; 20. Plug rod; 21. Moving block; 22. Guide rod; 23. Moving ring; 24. Pressing rod; 25. Spring; 26. Third conical surface; 27. Slot; 28. Rotating rod; 29. Limiting block; 30. Limiting groove; 31. Second through hole; 32. Skeleton; 33. Handle. Detailed implementation manners

[0028] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The following will describe the present utility model in detail with reference to the drawings and in combination with the embodiments.

[0029] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0030] In the present utility model, unless otherwise stated, the orientations such as "upper and lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left and right" are usually left and right as shown in the drawings; "inside and outside" refer to the inside and outside relative to the contours of the respective components, but the above orientation terms are not used to limit the present utility model.

[0031] Please refer to Figure 1-7 , a composite high-temperature resistant filter bag, comprising a filter bag body 1 and a fixed plate 2. An installation device is provided on the fixed plate 2. The filter bag body 1 includes a filter cartridge 3, a conical connecting part 4 and an annular pressing part 5. The filter cartridge 3, the conical connecting part 4 and the annular pressing part 5 all include an inner lining cloth 6, a high-temperature resistant layer 7 and a wear-resistant layer 8. The high-temperature resistant layer 7 is needled on one side of the inner lining cloth 6, and the wear-resistant layer 8 is needled on the side of the high-temperature resistant layer 7 away from the inner lining cloth 6. The inner lining cloth 6 is formed by compound needling of polyphenylene sulfide short cut fibers, polytetrafluoroethylene short cut fibers and aramid fibers. The high-temperature resistant layer 7 is formed by needling of polyester fiber short cut fibers and polyimide short cut fibers. The wear-resistant layer 8 is formed by needling of polyphenylene sulfide short cut fibers and glass fiber short cut fibers. A suture 9 is provided on the filter bag body 1, and silicone gaskets 10 are provided on both the inner and outer sides of the suture 9.

[0032] In this embodiment, first, short cut filaments of polyphenylene sulfide and short cut filaments of polytetrafluoroethylene are needled onto aramid fibers by a needling machine to form an inner lining cloth 6. Then, short cut filaments of polyester fiber and short cut filaments of polyimide are needled on the outer side of the inner lining cloth 6 by a needling machine to form a high-temperature resistant layer 7. Short cut filaments of polyphenylene sulfide and short cut filaments of glass fiber are needled on the outer side of the high-temperature resistant layer 7 to form a wear-resistant layer 8. Then, the whole is sewn into an integral body of a filter cartridge 3, a conical connecting part 4, and an annular pressing part 5. An organosilicon cushion layer 10 is coated at the sewing thread 9, and part of the organosilicon cushion layer 10 is filled into the stitches at the sewing thread 9 to shield and fill the stitches, so as to prevent dust from passing through the stitches of the sewing thread 9.

[0033] Please refer to Figure 1-7 , as an embodiment of the installation device: The installation device includes a pressing plate 11, a connecting rod 12, and a clamping mechanism. A first through hole 13 is provided on the fixed plate 2, and a first conical surface 14 that cooperates with the conical connecting part 4 is arranged at the first through hole 13. A pressing block 15 is provided on the lower surface of the pressing plate 11, and a second conical surface 16 that cooperates with the conical connecting part 4 is arranged on the outer side of the pressing block 15. The annular pressing part 5 is arranged between the fixed plate 2 and the pressing plate 11. The connecting rod 12 is fixedly arranged on the upper surface of the fixed plate 2. An installation hole 17 that cooperates with the connecting rod 12 is arranged on the pressing plate 11, and the clamping mechanism is arranged on the pressing plate 11. The connecting rod 12 is connected to the clamping mechanism. The clamping mechanism includes a connecting sleeve 18, a fixing ring 19, a plug rod 20, a moving block 21, a guiding rod 22, a moving ring 23, a pressing rod 24, and a limiting mechanism. The connecting sleeve 18 is fixedly arranged on the upper surface of the pressing plate 11. The fixing ring 19 is fixedly sleeved on the outer side of the connecting sleeve 18. One side of the moving block 21 is fixedly connected to the plug rod 20, and the other side is fixedly connected to the guiding rod 22. The plug rod 20 penetrates through the connecting sleeve 18 and is slidably connected to the connecting sleeve 18. The guiding rod 22 penetrates through the fixing ring 19 and is fixedly connected to the fixing ring 19. A spring 25 is arranged outside the guiding rod 22, and both ends of the spring 25 are fixedly connected to the moving block 21 and the fixing ring 19 respectively. The moving ring 23 is slidably and non-rotatably sleeved on the outer side of the connecting sleeve 18. The top end of the pressing rod 24 is connected to the lower surface of the moving ring 23, and the bottom end of the pressing rod 24 is in contact with the moving block 21. A third conical surface 26 is arranged on the moving block 21, and a slot 27 that cooperates with the plug rod 20 is arranged on the connecting rod 12. The limiting mechanism includes a rotating rod 28 and a limiting block 29. The limiting block 29 is fixedly arranged near the top end of the rotating rod 28. A limiting groove 30 that cooperates with the rotating rod 28 and the limiting block 29 is arranged on the moving ring 23. Second through holes 31 are arranged on the pressing plate 11 and the pressing block 15. A framework 32 is arranged on the lower surface of the pressing block 15. A handle 33 is arranged on the upper surface of the pressing plate 11. The connecting rod 12 and the clamping mechanism are both provided with several, and are both connected to the fixed plate 2 and the pressing plate 11.

[0034] More specifically, place the filter cloth body on the fixed plate 2, and let the filter cartridge 3 inside the filter cloth body pass through the first through hole 13. The conical connecting part 4 is in contact with the first conical surface 14, and the annular pressing part 5 is in contact with the upper surface of the fixed plate 2. Place the pressing plate 11 on the upper surface of the fixed plate 2, and pass the skeleton 32 through the filter cartridge 3 and set it inside the filter cartridge 3 until the second conical surface 16 on the pressing block 15 is in contact with the conical connecting part 4. At this time, the pressing plate 11 is in contact with the annular pressing part 5, and the mounting hole 17 is sleeved outside the connecting rod 12. When the clamping mechanism is working, first move the moving ring 23 downward. By moving the pressing rod 24 downward, the third conical surface 26 on the moving block 21 is squeezed, driving the moving block 21 and the inserting rod 20 to move outward, and the spring 25 contracts. At this time, the limiting block 29 at the top of the rotating rod 28 passes out of the limiting groove 30. Rotate the rotating rod 28, driving the dislocation between the limiting block 29 and the limiting groove 30. Release the moving ring 23, and the limiting block 29 limits the moving ring 23 to prevent the inserting rod 20 from moving inward. At this time, the device can be sleeved outside the connecting rod 12. After installation, rotate the rotating rod 28 until the limiting block 29 corresponds to the limiting groove 30. At this time, release the moving ring 23, and the spring 25 resets, driving the moving block 21 and the inserting rod 20 to move inward, penetrate the connecting sleeve 18 and cooperate with the slot 27 on the connecting rod 12 to realize the connection and fixation between the connecting rod 12 and the connecting sleeve 18. When it is necessary to disassemble the filter bag body 1, repeat the above operation. First, move the inserting rod 20 away from the connecting rod 12, and then the clamping mechanism can be removed from the connecting rod 12.

[0035] In summary, when the whole device is in use or operation: first, needle the polyphenylene sulfide short cut fibers and polytetrafluoroethylene short cut fibers on the aramid fiber through a needle punching machine to form the inner lining cloth 6. Then, needle the polyester short cut fibers and polyimide short cut fibers on the outside of the inner lining cloth 6 through a needle punching machine to form the high-temperature resistant layer 7. Needle the polyphenylene sulfide short cut fibers and glass fiber short cut fibers on the outside of the high-temperature resistant layer 7 to form the wear-resistant layer 8. Then, sew the whole into an integral body of the filter cartridge 3, the conical connecting part 4 and the annular pressing part 5, and coat the silicone cushion layer 10 at the sewing line 9. Part of the silicone cushion layer 10 fills into the stitches at the sewing line 9 to block and fill the stitches, preventing dust from passing through the stitches of the sewing line 9.

[0036] Place the filter cloth body on the fixed plate 2, and let the filter cartridge 3 inside the filter cloth body pass through the first through hole 13. The conical connecting part 4 is in contact with the first conical surface 14, and the annular pressing part 5 is in contact with the upper surface of the fixed plate 2. Place the pressing plate 11 on the upper surface of the fixed plate 2, and pass the skeleton 32 through the filter cartridge 3 and arrange it inside the filter cartridge 3 until the second conical surface 16 on the pressing block 15 is in contact with the conical connecting part 4. At this time, the pressing plate 11 is in contact with the annular pressing part 5, and the mounting hole 17 is sleeved outside the connecting rod 12. When the clamping mechanism is working, first move the moving ring 23 downward. By moving the pressing rod 24 downward, it squeezes the third conical surface 26 on the moving block 21, driving the moving block 21 and the insertion rod 20 to move outward, and the spring 25 contracts. At this time, the limiting block 29 at the top of the rotating rod 28 passes out of the limiting groove 30. Rotate the rotating rod 28, driving a dislocation between the limiting block 29 and the limiting groove 30. Release the moving ring 23, and the limiting block 29 limits the moving ring 23 to prevent the insertion rod 20 from moving inward. At this time, the device can be sleeved outside the connecting rod 12. After installation, rotate the rotating rod 28 until the limiting block 29 corresponds to the limiting groove 30. At this time, release the moving ring 23, and the spring 25 resets, driving the moving block 21 and the insertion rod 20 to move inward, passing through the connecting sleeve 18 and cooperating with the slot 27 on the connecting rod 12 to realize the connection and fixation between the connecting rod 12 and the connecting sleeve 18. When it is necessary to remove the filter bag body 1, repeat the above operation. First, move the insertion rod 20 away from the connecting rod 12, and the clamping mechanism can be removed from the connecting rod 12.

[0037] In all the solutions mentioned above, for the connection between two components, welding, the cooperation of bolts and nuts, bolt or screw connection, or other well-known connection methods can be selected according to the actual situation, which will not be elaborated one by one here. In the above text, wherever it involves fixed connection, welding is preferably considered. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite high-temperature resistant filter bag, comprising a filter bag body (1) and a fixing plate (2), characterized in that: The fixing plate (2) is provided with a mounting device. The filter bag body (1) includes a filter cartridge (3), a conical connecting part (4) and an annular pressing part (5). The filter cartridge (3), the conical connecting part (4) and the annular pressing part (5) all include an inner lining cloth (6), a high-temperature resistant layer (7) and a wear-resistant layer (8). The high-temperature resistant layer (7) is needled on one side of the inner lining cloth (6), and the wear-resistant layer (8) is needled on the side of the high-temperature resistant layer (7) away from the inner lining cloth (6). The inner lining cloth (6) is made by compound needling of polyphenylene sulfide short cut filaments, polytetrafluoroethylene short cut filaments and aramid fibers. The high-temperature resistant layer (7) is made by needling of polyester fiber short cut filaments and polyimide short cut filaments. The wear-resistant layer (8) is made by needling of polyphenylene sulfide short cut filaments and glass fiber short cut filaments. The filter bag body (1) is provided with a sewing thread (9), and silicone rubber cushion layers (10) are arranged on both the inner side and the outer side of the sewing thread (9).

2. The composite high-temperature resistant filter bag according to claim 1, characterized in that: The mounting device includes a pressing plate (11), a connecting rod (12) and a clamping mechanism. The fixing plate (2) is provided with a first through hole (13), and a first conical surface (14) that cooperates with the conical connecting part (4) is arranged at the first through hole (13). A pressing block (15) is arranged on the lower surface of the pressing plate (11), and a second conical surface (16) that cooperates with the conical connecting part (4) is arranged on the outer side of the pressing block (15). The annular pressing part (5) is arranged between the fixing plate (2) and the pressing plate (11). The connecting rod (12) is fixedly arranged on the upper surface of the fixing plate (2). A mounting hole (17) that cooperates with the connecting rod (12) is arranged on the pressing plate (11), and the clamping mechanism is arranged on the pressing plate (11), and the connecting rod (12) is connected with the clamping mechanism.

3. The composite high-temperature resistant filter bag according to claim 2, characterized in that: The clamping mechanism includes a connecting sleeve (18), a fixing ring (19), a plug rod (20), a moving block (21), a guide rod (22), a moving ring (23), a pressing rod (24) and a limiting mechanism. The connecting sleeve (18) is fixedly arranged on the upper surface of the pressing plate (11). The fixing ring (19) is fixedly sleeved on the outer side of the connecting sleeve (18). One side of the moving block (21) is fixedly connected with the plug rod (20), and the other side is fixedly connected with the guide rod (22). The plug rod (20) penetrates through the connecting sleeve (18) and is slidably connected with the connecting sleeve (18). The guide rod (22) penetrates through the fixing ring (19) and is fixedly connected with the fixing ring (19). A spring (25) is arranged outside the guide rod (22), and both ends of the spring (25) are fixedly connected with the moving block (21) and the fixing ring (19) respectively. The moving ring (23) is slidably and non-rotatably sleeved on the outer side of the connecting sleeve (18). The top end of the pressing rod (24) is connected with the lower surface of the moving ring (23), and the bottom end of the pressing rod (24) is in contact with the moving block (21). A third conical surface (26) is arranged on the moving block (21). A slot (27) that cooperates with the plug rod (20) is arranged on the connecting rod (12).

4. The composite high-temperature resistant filter bag according to claim 3, characterized in that: The limiting mechanism includes a rotating rod (28) and a limiting block (29). The limiting block (29) is fixedly arranged near the top of the rotating rod (28). A limiting groove (30) that cooperates with the rotating rod (28) and the limiting block (29) is arranged on the moving ring (23).

5. The composite high-temperature resistant filter bag according to claim 2, characterized in that: Second through holes (31) are provided on the pressing plate (11) and the pressing block (15).

6. The composite high-temperature resistant filter bag according to claim 5, characterized in that: A framework (32) is provided on the lower surface of the pressing block (15).

7. The composite high-temperature resistant filter bag according to claim 2, wherein: A handle (33) is provided on the upper surface of the pressing plate (11).

8. The composite high-temperature resistant filter bag according to claim 4, characterized in that: A number of connecting rods (12) and the clamping mechanism are provided, and both are connected to the fixing plate (2) and the pressing plate (11).

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