PTFE filter bag with waterproof function

Abstract

The utility model discloses a PTFE filter bag with a waterproof function, which comprises a filter bag body, a lifting drying mechanism, a quick connecting mechanism and a connecting auxiliary mechanism, the lifting drying mechanism comprises a top frame, a driving motor, a lead screw, a threaded plate, a drying ring and a drying nozzle, the quick connecting mechanism comprises a clamping outer pipe, a clamping inner pipe, a clamping groove, a locking frame, a threaded groove, a rotating ring, a rotating guide plate and a rotating guide groove, the filter bag body needs to be comprehensively dried to ensure the waterproof performance and the service life of the filter bag body, the lifting drying mechanism drives a lead screw to rotate through a driving motor, the threaded plate and the drying ring slide up and down on the outer wall of the filter bag body, and the filter bag body is dried. The drying nozzle is arranged on the filter bag body, it is ensured that the drying nozzle can evenly dry all parts of the filter bag body, rapid connection and disassembly of the clamping inner pipe and the clamping outer pipe are achieved, the connection and disassembly time is shortened, the production efficiency is improved, and the operation difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to the field of PTFE filter bag technology, and more specifically, to a PTFE filter bag with waterproof function. Background Technology

[0002] PTFE (polytetrafluoroethylene) filter bags are a high-performance filter material widely used in various industrial filtration and dust removal systems. To improve their performance in humid environments, many PTFE filter bags are designed to be waterproof. These waterproof PTFE filter bags effectively prevent moisture penetration while maintaining high filtration efficiency, thus extending their service life.

[0003] In existing technologies, firstly, some drying nozzles cannot slide up and down the outer wall of the filter bag body, resulting in some parts of the filter bag body not being fully dried. Some parts of the filter bag body may retain moisture, affecting its waterproof performance and service life. The drying process can only rely on drying nozzles in fixed positions, which cannot achieve full coverage, increasing the complexity of operation and labor intensity. Secondly, the connection and disassembly time between some devices and external drying equipment is long, reducing production efficiency and increasing the difficulty of operation. Without a quick connection mechanism, the connection parts may not be firm enough and are prone to loosening or falling off. Loosening of the connection parts may lead to drying gas leakage, affecting the drying effect and even causing equipment failure. Without a quick connection mechanism, the sealing of the connection parts cannot be guaranteed, which can easily lead to gas leakage. The leakage of drying gas not only wastes resources but may also affect the safety of the working environment. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a PTFE filter bag with waterproof function to solve the technical problems mentioned in the background art, such as the inability of certain parts of the filter bag body to be fully dried and the long connection and disassembly time between the device and the external drying equipment.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a waterproof PTFE filter bag, comprising a filter bag body, a lifting and drying mechanism, a quick-connect mechanism, and a connecting auxiliary mechanism. The lifting and drying mechanism includes a top frame, a drive motor, a lead screw, a threaded plate, a drying ring, and a drying nozzle. The top frame is mounted on the side of the top frame, the drive motor is mounted on the top end of the top frame, one end of the lead screw is connected to the drive motor, the threaded plate is mounted on the side of the drying ring, and the drying ring slides up and down on the outer wall of the filter bag body. The patterned plate and the lead screw are connected by a thread. The drying nozzle is installed inside the drying ring. The quick connection mechanism includes a snap-fit ​​outer tube, a snap-fit ​​inner tube, a snap-fit ​​groove, a locking frame, a threaded groove, a rotating ring, a guide plate, and a guide groove. The snap-fit ​​groove is set on the outer wall of the snap-fit ​​inner tube. The threaded grooves are respectively set on the inner wall and the outer wall of the snap-fit ​​inner tube. The rotating ring is rotatably installed on the outer wall of the snap-fit ​​tube. The guide plate is installed at one end of the locking frame. The guide groove is set on the inner wall of the rotating ring. The guide plate slides in the guide groove, so that the locking frame slides into or away from the snap-fit ​​groove in a directional manner.

[0008] The present invention is further configured such that the connecting auxiliary mechanism includes a fixed ring, a spring pin, a bottom ring, a rotating plate, an insertion block, a mating groove plate, and a compression spring plate. The fixed ring is installed on the outer wall of the clamping tube, multiple sets of spring pins are installed on the top of the fixed ring, the bottom ring is installed on the bottom of the rotating ring, one end of the spring pin supports the bottom ring upwards, and the rotating plate and the insertion block are installed on the top of the rotating ring. The mating groove plate is fixedly installed on the outer wall of the clamping tube, and the compression spring plate is symmetrically installed on one side of the mating groove plate. The compression spring plate can press against both sides of the insertion block that extends into the mating groove plate.

[0009] The present invention is further configured such that a central rod is installed in the center of the interior of the filter bag body, and an inner support frame is installed on the central rod. The inner support frame is connected to the inner wall of the filter bag body. The design of the central rod and the inner support frame ensures that the filter bag body maintains a stable shape during use, prevents the filter bag from deforming during filtration, and improves filtration efficiency and reliability.

[0010] The present invention is further configured such that a base frame is installed at the bottom of the filter bag body, and one end of the lead screw is connected to the base frame to support rotation. The base frame ensures stable support and rotation of the lead screw, thereby improving the stability of the entire device.

[0011] The present invention is further configured such that a guide rod is installed at the top end of the base frame, and a guide plate is installed on the side of the drying ring. The guide plate is slidably guided on the guide rod. By sliding the guide plate on the guide rod, the smooth up and down movement of the drying ring is ensured, reducing friction and wear.

[0012] The present invention is further configured such that an air supply pipe is installed on the side of the drying ring, one end of the air supply pipe is connected to one end of the snap-fit ​​outer pipe, and the air supply pipe provides drying gas to ensure the smooth progress of the drying process.

[0013] The present invention is further configured such that an outer connecting pipe is installed at one end of the snap-fit ​​inner tube, and the outer connecting pipe is connected to the output end of the external drying equipment to provide drying gas, thereby ensuring the smooth progress of the drying process.

[0014] The present invention is further configured such that a sealing ring is installed on the outer surface of the snap-fit ​​inner tube, and the outer wall of the snap-fit ​​inner tube presses against the sealing ring, so that the sealing ring is pressed tightly against the inner wall of the snap-fit ​​tube, thereby ensuring the sealing of the connection and preventing the leakage of drying gas.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a PTFE filter bag with waterproof function, which has the following beneficial effects:

[0017] This utility model is equipped with a lifting and drying mechanism. The filter bag body needs to be fully dried to ensure its waterproof performance and service life. The lifting and drying mechanism drives the lead screw to rotate through the drive motor, so that the threaded plate and drying ring slide up and down on the outer wall of the filter bag body. This ensures that the drying nozzle can evenly dry all parts of the filter bag body, improving the uniformity and efficiency of drying, and ensuring that the filter bag body maintains good waterproof performance during use.

[0018] This invention features a quick-connect mechanism. Previously, connecting the inner and outer tubes required manual alignment and fixing, which was complex. The quick-connect mechanism, through the cooperation of a slot, locking frame, threaded groove, rotating ring, guide plate, and guide groove, enables rapid connection and disassembly of the inner and outer tubes, reducing connection and disassembly time, improving production efficiency, and lowering operational difficulty. Previously, the connection points might not be secure enough, easily loosening or falling off. The locking frame, through the sliding of the guide plate within the guide groove, allows for directional sliding into or away from the slot, ensuring the connection's firmness, improving stability and reliability, and reducing the risk of loosening or falling off.

[0019] This utility model incorporates a connecting auxiliary mechanism. The connection between the rotating ring and the retaining tube may be unstable and prone to wobbling. The cooperation of the fixing ring, spring pin, bottom ring, rotating plate, extension block, mating groove plate, and compression spring plate ensures a stable connection of the rotating ring, improves the stability of the connection, reduces shaking during equipment operation, and ensures normal equipment operation. The design of the rotating plate and extension block, through the compression of the compression spring plate, achieves the fixation of the extension block within the mating groove plate, simplifying operation, reducing operational complexity and labor intensity, and improving operational convenience and accuracy. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the device in the unused state of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the device in this utility model from a top view.

[0022] Figure 3 This is a structural diagram illustrating the connection method between the device and external equipment in this utility model;

[0023] Figure 4 This is a schematic diagram of the quick connection mechanism and the connection auxiliary mechanism in this utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the quick connection mechanism and the connection auxiliary mechanism in this utility model.

[0025] In the diagram: 1. Filter bag body; 2. Top frame; 3. Drive motor; 4. Lead screw; 5. Threaded plate; 6. Drying ring; 7. Drying nozzle; 8. Snap-fit ​​outer tube; 9. Snap-fit ​​inner tube; 10. Snap-fit ​​groove; 11. Locking frame; 12. Threaded groove; 13. Rotating ring; 14. Guide plate; 15. Guide groove; 16. Fixing ring; 17. Spring pin; 18. Bottom ring; 19. Rotating plate; 20. Extension block; 21. Matching groove plate; 22. Compression spring plate; 23. Center rod; 24. Inner support frame; 25. Base frame; 26. Guide rod; 27. Guide plate; 28. Air supply pipe; 29. ​​Outer pipe; 30. Sealing ring. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5 A waterproof PTFE filter bag includes a filter bag body 1, a lifting and drying mechanism, a quick-connect mechanism, and a connecting auxiliary mechanism. The lifting and drying mechanism includes a top frame 2, a drive motor 3, a lead screw 4, a threaded plate 5, a drying ring 6, and a drying nozzle 7. The top frame 2 is mounted on its side, the drive motor 3 is mounted on its top end, one end of the lead screw 4 is connected to the drive motor 3, the threaded plate 5 is mounted on the side of the drying ring 6, the drying ring 6 slides up and down on the outer wall of the filter bag body 1, and the threaded plate 5 is threadedly connected to the lead screw 4. The drying nozzle 7 is mounted on the drying ring. Inside 6, the quick-connect mechanism includes a snap-fit ​​outer tube 8, a snap-fit ​​inner tube 9, a snap-fit ​​groove 10, a locking frame 11, a threaded groove 12, a rotating ring 13, a guide plate 14, and a guide groove 15. The snap-fit ​​groove 10 is located on the outer wall of the snap-fit ​​inner tube 9. The threaded groove 12 is located on both the inner and outer walls of the snap-fit ​​inner tube 9. The rotating ring 13 is rotatably mounted on the outer wall of the snap-fit ​​tube. The guide plate 14 is mounted on one end of the locking frame 11. The guide groove 15 is located on the inner wall of the rotating ring 13. The guide plate 14 slides within the guide groove 15, causing the locking frame 11 to slide directionally into or away from the snap-fit ​​groove 10.

[0030] In this embodiment, the drive motor 3 is installed at the top end of the top frame 2. When the drive motor 3 is started, the output shaft of the motor rotates, driving the lead screw 4 to rotate. One end of the lead screw 4 is connected to the output shaft of the drive motor 3. When the lead screw 4 rotates, it drives the threaded plate 5 to move up and down through the threaded connection. The threaded plate 5 is installed on the side of the drying ring 6. When the lead screw 4 rotates, the threaded plate 5 moves up and down along the thread of the lead screw 4, driving the drying ring 6 to slide up and down. The drying ring 6 is installed on the outer wall of the filter bag body 1. The guide plate 27 slides on the guide rod 26 to ensure the stability of the drying ring 6 when sliding up and down. The drying nozzle 7 is installed inside the drying ring 6. When the drying ring 6 slides up and down, the drying nozzle 7 dries the filter bag body 1 evenly. One end of the inner tube 9 is fitted with a... An external pipe 29 is connected to the output end of an external drying device to provide drying gas. A slot 10 is provided on the outer wall of the inner pipe 9, and a threaded groove 12 is provided on the inner wall of the outer pipe 8. A rotating ring 13 is installed on the outer wall of the outer pipe 8. By rotating the rotating ring 13, the guide plate 14 is driven to slide in the guide groove 15. The guide plate 14 is installed at one end of the locking frame 11. When the rotating ring 13 rotates, the guide plate 14 slides in the guide groove 15, causing the locking frame 11 to slide in a direction. Under the action of the guide plate 14, the locking frame 11 extends into the slot 10 of the inner pipe 9, realizing the quick connection between the inner pipe 9 and the outer pipe 8. When disassembly is required, the rotating ring 13 is rotated in the opposite direction, and the guide plate 14 drives the locking frame 11 away from the slot 10, realizing quick disassembly.

[0031] The connecting auxiliary mechanism includes a fixed ring 16, a spring pin 17, a bottom ring 18, a rotating plate 19, an extension block 20, a mating groove plate 21, and a compression spring plate 22. The fixed ring 16 is installed on the outer wall of the clamping tube. Multiple sets of spring pins 17 are installed on the top of the fixed ring 16. The bottom ring 18 is installed on the bottom of the rotating ring 13. One end of the spring pin 17 supports the bottom ring 18 upwards, which is rotatably supported. The rotating plate 19 and the extension block 20 are installed on the top of the rotating ring 13. The mating groove plate 21 is fixedly installed on the outer wall of the clamping tube. The compression spring plate 22 is symmetrically installed on one side of the mating groove plate 21. The compression spring plate 22 can press against both sides of the extension block 20 that extends into the mating groove plate 21, so that the rotating ring 13 is fixed on the outer wall of the clamping tube.

[0032] In this embodiment, the fixing ring 16 is installed on the outer wall of the snap-fit ​​outer tube 8, and multiple sets of spring-loaded pins 17 are installed on the top of the fixing ring 16. One end of the spring-loaded pin 17 supports the bottom ring 18 upward to ensure the stable support of the bottom ring 18. The bottom ring 18 is installed at the bottom of the rotating ring 13, and the rotating plate 19 and the extension block 20 are installed on the top of the rotating ring 13. The rotating ring 13 achieves rotation and fixation through the cooperation of the bottom ring 18 and the rotating plate 19. The mating groove plate 21 is fixedly installed on the outer wall of the snap-fit ​​outer tube 8, and the compression spring plate 22 is symmetrically installed on one side of the mating groove plate 21. The compression spring plate 22 can press against both sides of the extension block 20 extending into the mating groove plate 21, so that the rotating ring 13 is fixed on the outer wall of the snap-fit ​​outer tube 8, thereby making the locking frame 11 and the slot 10 stably connected.

[0033] Please see Figures 1-5 As a supplementary embodiment of a waterproof PTFE filter bag for the lifting drying mechanism, quick connection mechanism, and connection auxiliary mechanism: A central rod 23 is installed in the center of the filter bag body 1, and an inner support frame 24 is installed on the central rod 23. The inner support frame 24 is connected to the inner wall of the filter bag body 1. A base frame 25 is installed at the bottom of the filter bag body 1. One end of the screw 4 is connected to the base frame 25 to support rotation. A guide rod 26 is installed at the top of the base frame 25. A guide plate 27 is installed on the side of the drying ring 6, and the guide plate 27 slides and guides on the guide rod 26. An air supply pipe 28 is installed on the side of the drying ring 6. One end of the air supply pipe 28 is connected to one end of the snap-fit ​​outer pipe 8. An outer pipe 29 is installed at one end of the snap-fit ​​inner pipe 9, and the outer pipe 29 is connected to the output end of the external drying equipment. A sealing ring 30 is installed on the outer surface of the snap-fit ​​inner pipe 9, and the outer wall of the snap-fit ​​inner pipe 9 presses against the sealing ring 30, so that the sealing ring 30 is pressed tightly against the inner wall of the snap-fit ​​pipe.

[0034] More specifically, a central rod 23 is installed in the center of the filter bag body 1, and an inner support frame 24 is installed on the central rod 23. The inner support frame 24 is connected to the inner wall of the filter bag body 1 to ensure that the filter bag body 1 maintains its shape during use. The drive motor 3 starts, the lead screw 4 rotates, and drives the threaded plate 5 to move up and down through the threaded connection. The threaded plate 5 drives the drying ring 6 to slide up and down. The guide plate 27 of the drying ring 6 slides on the guide rod 26 to ensure the smooth up and down movement of the drying ring 6. The drying nozzle 7 inside the drying ring 6 dries the filter bag body 1 evenly. The outer pipe 29 is connected to the output end of the external drying equipment to provide drying gas. The rotating ring 13 is rotated, and the guide plate 14 slides in the guide groove 15, which drives the locking frame 11 to extend into the locking groove 1 of the inner tube 9. In step 0, the inner tube 9 and the outer tube 8 are quickly connected. The fixing ring 16 is installed on the outer wall of the outer tube 8. One end of the spring pin 17 supports the bottom ring 18 upward to ensure the stable support of the bottom ring 18. The rotating ring 13 is rotated and fixed through the cooperation of the bottom ring 18 and the rotating plate 19. The compression spring plate 22 is symmetrically installed on one side of the mating groove plate 21. The compression spring plate 22 presses against both sides of the protruding block 20 that extends into the mating groove plate 21, so that the rotating ring 13 is fixed on the outer wall of the outer tube 8. Through the up and down movement of the lifting drying mechanism, the drying nozzle 7 dries the filter bag body 1 evenly. After drying, the rotating ring 13 is rotated in the opposite direction. The guide plate 14 drives the locking frame 11 away from the slot 10, realizing the quick disassembly of the external drying equipment from the device.

[0035] In summary, during the use or operation of the overall equipment: When the lifting and drying mechanism needs to be operated, the drive motor 3 is installed at the top end of the top frame 2. When the drive motor 3 is started, the output shaft of the motor rotates, driving the lead screw 4 to rotate. One end of the lead screw 4 is connected to the output shaft of the drive motor 3. When the lead screw 4 rotates, it drives the threaded plate 5 to move up and down through the threaded connection. The threaded plate 5 is installed on the side of the drying ring 6. When the lead screw 4 rotates, the threaded plate 5 moves up and down along the thread of the lead screw 4, driving the drying ring 6 to slide up and down. The drying ring 6 is installed on the outer wall of the filter bag body 1. The guide plate 27 slides on the guide rod 26 to ensure the stability of the drying ring 6 when sliding up and down. The drying nozzle 7 is installed inside the drying ring 6. When the drying ring 6 slides up and down, the drying nozzle 7 dries the filter bag body 1 evenly.

[0036] When the quick-connect mechanism is in operation, an outer pipe 29 is installed at one end of the snap-fit ​​inner tube 9. The outer pipe 29 is connected to the output end of the external drying equipment to provide drying gas. A snap-fit ​​groove 10 is provided on the outer wall of the snap-fit ​​inner tube 9, and a threaded groove 12 is provided on the inner wall of the snap-fit ​​outer tube 8. A rotating ring 13 is installed on the outer wall of the snap-fit ​​outer tube 8. By rotating the rotating ring 13, the guide plate 14 is driven to slide in the guide groove 15. The guide plate 14 is installed at one end of the locking frame 11. When the rotating ring 13 rotates, the guide plate 14 slides in the guide groove 15, which drives the locking frame 11 to slide in a direction. Under the drive of the guide plate 14, the locking frame 11 extends into the snap-fit ​​groove 10 of the snap-fit ​​inner tube 9, realizing the quick connection between the snap-fit ​​inner tube 9 and the snap-fit ​​outer tube 8. When disassembly is required, the rotating ring 13 is rotated in the opposite direction, and the guide plate 14 drives the locking frame 11 away from the snap-fit ​​groove 10, realizing quick disassembly.

[0037] When the auxiliary mechanism needs to be connected, the fixing ring 16 is installed on the outer wall of the snap-fit ​​outer tube 8, and multiple sets of spring-loaded pins 17 are installed on the top of the fixing ring 16. One end of the spring-loaded pin 17 supports the bottom ring 18 upward to ensure the stable support of the bottom ring 18. The bottom ring 18 is installed at the bottom of the rotating ring 13, and the rotating plate 19 and the extension block 20 are installed on the top of the rotating ring 13. The rotating ring 13 achieves rotation and fixation through the cooperation of the bottom ring 18 and the rotating plate 19. The mating groove plate 21 is fixedly installed on the outer wall of the snap-fit ​​outer tube 8, and the compression spring plate 22 is symmetrically installed on one side of the mating groove plate 21. The compression spring plate 22 can press against both sides of the extension block 20 extending into the mating groove plate 21, so that the rotating ring 13 is fixed on the outer wall of the snap-fit ​​outer tube 8, thereby making the locking frame 11 and the slot 10 stably connected.

[0038] A central rod 23 is installed in the center of the filter bag body 1. An inner support frame 24 is installed on the central rod 23. The inner support frame 24 is connected to the inner wall of the filter bag body 1 to ensure that the filter bag body 1 maintains its shape during use. The drive motor 3 starts, the lead screw 4 rotates, and the threaded plate 5 moves up and down through the threaded connection. The threaded plate 5 drives the drying ring 6 to slide up and down. The guide plate 27 of the drying ring 6 slides on the guide rod 26 to ensure the smooth up and down movement of the drying ring 6. The drying nozzle 7 inside the drying ring 6 dries the filter bag body 1 evenly. The outer pipe 29 is connected to the output end of the external drying equipment to provide drying gas. The rotating ring 13 is rotated, and the guide plate 14 slides in the guide groove 15, which drives the locking frame 11 to extend into the locking groove 10 of the inner tube 9. The device enables quick connection between the inner tube 9 and the outer tube 8. The fixing ring 16 is installed on the outer wall of the outer tube 8. One end of the spring pin 17 supports the bottom ring 18 upward to ensure stable support of the bottom ring 18. The rotating ring 13 rotates and is fixed through the cooperation of the bottom ring 18 and the rotating plate 19. The compression spring plate 22 is symmetrically installed on one side of the mating groove plate 21. The compression spring plate 22 presses against both sides of the protruding block 20 that extends into the mating groove plate 21, so that the rotating ring 13 is fixed on the outer wall of the outer tube 8. Through the up and down movement of the lifting drying mechanism, the drying nozzle 7 dries the filter bag body 1 evenly. After drying, the rotating ring 13 is rotated in the opposite direction, and the guide plate 14 drives the locking frame 11 away from the slot 10, so as to realize the quick disassembly of the external drying equipment from the device.

[0039] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A waterproof PTFE filter bag, comprising a filter bag body (1), a lifting and drying mechanism, a quick-connect mechanism, and a connecting auxiliary mechanism, characterized in that: The lifting and drying mechanism includes a top frame (2), a drive motor (3), a lead screw (4), a threaded plate (5), a drying ring (6), and a drying nozzle (7). The top frame (2) is installed on the side of the top frame (2), the drive motor (3) is installed on the top end of the top frame (2), one end of the lead screw (4) is connected to the drive motor (3), the threaded plate (5) is installed on the side of the drying ring (6), and the threaded plate (5) is threadedly connected to the lead screw (4). The drying nozzle (7) is installed inside the drying ring (6). The quick connection mechanism includes a snap-fit ​​outer tube (8) and a snap-fit... The device includes an inner tube (9), a slot (10), a locking frame (11), a threaded groove (12), a rotating ring (13), a guide plate (14), and a guide groove (15). The slot (10) is located on the outer wall of the inner tube (9). The threaded groove (12) is located on the inner wall and the outer wall of the inner tube (9), respectively. The rotating ring (13) is rotatably mounted on the outer wall of the inner tube. The guide plate (14) is mounted on one end of the locking frame (11). The guide groove (15) is located on the inner wall of the rotating ring (13). The guide plate (14) slides in the guide groove (15).

2. The PTFE filter bag with waterproof function according to claim 1, characterized in that: The connecting auxiliary mechanism includes a fixed ring (16), a spring pin (17), a bottom ring (18), a rotating plate (19), an insertion block (20), a mating groove plate (21), and a compression spring plate (22). The fixed ring (16) is installed on the outer wall of the clamping tube. Multiple sets of spring pins (17) are installed on the top of the fixed ring (16). The bottom ring (18) is installed on the bottom of the rotating ring (13). One end of the spring pin (17) supports the bottom ring (18) upwards and is rotatably supported. The rotating plate (19) and the insertion block (20) are installed on the top of the rotating ring (13). The mating groove plate (21) is fixedly installed on the outer wall of the clamping tube. The compression spring plate (22) is symmetrically installed on one side of the mating groove plate (21). The compression spring plate (22) can press against both sides of the insertion block (20) that extends into the mating groove plate (21).

3. The PTFE filter bag with waterproof function according to claim 1, characterized in that: A central rod (23) is installed in the center of the filter bag body (1), and an inner support frame (24) is installed on the central rod (23). The inner support frame (24) is connected to the inner wall of the filter bag body (1).

4. A PTFE filter bag with waterproof function according to claim 1, characterized in that: The bottom of the filter bag body (1) is equipped with a base frame (25), and one end of the screw (4) is connected to the base frame (25) to support the rotation.

5. A PTFE filter bag with waterproof function according to claim 4, characterized in that: The top end of the base frame (25) is provided with a guide rod (26), and the side of the drying ring (6) is provided with a guide plate (27), and the guide plate (27) is slidably guided on the guide rod (26).

6. A PTFE filter bag with waterproof function according to claim 1, characterized in that: The drying ring (6) is provided with an air supply pipe (28) on its side, and one end of the air supply pipe (28) is connected to one end of the snap-fit ​​outer pipe (8).

7. A PTFE filter bag with waterproof function according to claim 1, characterized in that: One end of the snap-fit ​​inner tube (9) is equipped with an outer tube (29), and the outer tube (29) is connected to the output end of the external drying equipment.

8. A PTFE filter bag with waterproof function according to claim 1, characterized in that: A sealing ring (30) is installed on the outer surface of the snap-fit ​​inner tube (9), and the outer wall of the snap-fit ​​inner tube (9) presses against the sealing ring (30), so that the sealing ring (30) is pressed tightly against the inner wall of the snap-fit ​​tube.

Images