An automated filter bag cleaning device
The design of the automated filter bag cleaning device solves the problem of impurity accumulation at the bottom of the filter bag, realizes efficient filter bag cleaning and safe operation, and simplifies the filter bag maintenance process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HUASAIER NEW MATERIAL TECHNOLOGY CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-06-09
AI Technical Summary
When filtering viscous, easily crystallized, and gelled lyocell spinning dopes, traditional filter bags tend to accumulate impurities at the bottom of the bag, forming a filter cake. This increases filtration resistance, makes it difficult to effectively remove impurities through conventional cleaning, and manual disassembly is cumbersome and poses safety risks.
An automated filter bag cleaning device was designed, which includes a bottom-openable discharge seat, a rotary scraping mechanism and a precision lifting mechanism. It can automatically scrape off impurities at the bottom of the filter bag and flip the filter bag over as a whole for easy cleaning, avoiding manual disassembly.
It achieves automated filter bag cleaning, reduces filtration resistance, maintains flux, simplifies operation, improves safety and cleaning efficiency, and avoids filter bag damage.
Smart Images
Figure CN224331620U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automated filter bag cleaning technology, specifically to an automated filter bag cleaning device. Background Technology
[0002] In the production process of lyocell fiber, the filtration of the spinning solution (usually N-methylmorpholine-N-oxide, NMMO, which is a solution of cellulose dissolved in water) is a key step in ensuring the quality of the final fiber. The filtration process is mainly used to remove undissolved impurities, gel particles, and other particulate matter in the solution that may clog the spinneret or affect the spinning stability. Currently, filter bags are widely used in the industry as the main filtration element, which has the advantages of high filtration accuracy and strong dirt holding capacity.
[0003] Traditional filter bags are mostly simple cylindrical or flat-bottomed designs. When filtering viscous and easily crystallizing / gelling lyocell spinning solutions, the trapped impurities, especially highly adhesive gel clumps, tend to accumulate and cake at the bottom of the filter bag, forming a "filter cake" that is difficult to detach on its own. This not only rapidly increases filtration resistance and reduces throughput, but also causes impurities to accumulate in the dead corners at the bottom of the bag, making it difficult to effectively remove them using conventional backflushing or rinsing. When the filter bag is severely clogged and needs to be replaced or cleaned, the entire filter bag assembly usually needs to be manually disassembled. This process is not only cumbersome and time-consuming, affecting continuous production, but also requires operators to be in close contact with the filter bag, which may contain residual high temperatures or corrosive solvents, posing a safety risk. In addition, manual disassembly and installation can easily cause mechanical damage to the filter bag or sealing components due to improper operation. Utility Model Content
[0004] The purpose of this invention is to provide an automated filter bag cleaning device to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an automated filter bag cleaning device, comprising a base frame and an installation tank. An installation frame is fixedly installed on the installation tank, and a filter bag is fixedly installed inside the installation frame. A discharge seat is provided inside the installation tank, and the lower end of the filter bag is fixedly connected to the discharge seat. A collection pipe is threaded onto the lower part of the discharge seat. An installation ring is rotatably installed inside the discharge seat, and a first toothed ring is fitted onto the installation ring. Multiple sets of annularly distributed closed plates are provided inside the discharge seat, and all sets of closed plates are rotatably connected to the discharge seat via installation shafts. Multiple sets of installation shafts are annularly distributed around the installation ring, and a first gear is fitted onto each of the installation shafts. All sets of first gears mesh with the first toothed ring. A rotating ring is rotatably installed inside the installation tank, and a second toothed ring is fitted onto the rotating ring. A drive wheel is rotatably installed inside the installation tank, and the drive wheel meshes with the second toothed ring. A scraper is movably engaged on the rotating ring, and the scraper is fitted against the inner surface of the filter bag.
[0006] As a further preferred embodiment of this technical solution, two sets of slides are slidably installed inside the rotating ring. Each set of slides is fixedly mounted with a plug rod. The two sets of plug rods are respectively engaged with the scraper rod. Each set of plug rods is sleeved with a first spring. The two ends of the first spring are respectively fixedly connected to the plug rod and the rotating ring.
[0007] As a further preferred embodiment of this technical solution, racks are fixedly installed on both sets of slides, and a second gear is provided between the two sets of racks. The second gear meshes with the two sets of racks respectively. The second gear is rotatably connected to the handle and the rotating ring. The two sets of slides are centrally symmetrical about the handle. A torsion spring is sleeved on the handle. The two ends of the torsion spring are fixedly connected to the second gear and the rotating ring respectively. Two sets of slide rods corresponding to the slides are fixedly installed inside the rotating ring. The slides are slidably sleeved with the corresponding slide rods.
[0008] As a further preferred embodiment of this technical solution, two sets of symmetrically distributed second springs are sleeved on the slide rod, and the two ends of the second springs are fixedly connected to the slide frame and the swivel ring, respectively.
[0009] As a further preferred embodiment of this technical solution, an installation rod is fixedly installed on the base frame, the installation rod is correspondingly arranged with the discharge seat, a first telescopic rod is slidably installed inside the installation rod, a second telescopic rod is slidably installed inside the first telescopic rod, the lower end of the second telescopic rod is fixedly connected to the discharge seat, a threaded rod is rotatably installed inside the installation rod, the lower end of the threaded rod passes through the first telescopic rod and is threadedly connected to the first telescopic rod, and a threaded tube is rotatably installed inside the first telescopic rod, the lower end of the threaded tube passes through the second telescopic rod and is threadedly connected to the second telescopic rod.
[0010] As a further preferred embodiment of this technical solution, the threaded rod is provided with two sets of symmetrically distributed keyways, and the threaded tube is provided with two sets of symmetrically distributed key blocks. The two sets of key blocks are correspondingly arranged with the keyways, and the threaded tube is slidably sleeved with the corresponding threaded rod through the key blocks and keyways.
[0011] This utility model provides an automated filter bag cleaning device, which has the following advantages:
[0012] (1) This utility model has an openable and closable structure consisting of an installation ring, a first toothed ring and a closing plate in the bottom discharge seat, which can smoothly discharge impurities such as gel blocks accumulated at the bottom of the filter bag, effectively prevent the formation of "filter cake", significantly reduce filtration resistance and maintain flow rate. The rotating scraping mechanism set inside the device, namely the rotating ring and scraper, can move closely against the inner wall of the filter bag and powerfully scrape off stubbornly adhered impurities. The scraper is flexibly installed on the rotating ring through components such as a slide, insert rod and spring, which realizes the quick installation, disassembly and replacement of the scraper, greatly facilitating maintenance operations.
[0013] (2) This utility model uses a precision lifting mechanism consisting of an installation rod, a first telescopic rod, and a second telescopic rod to smoothly lift or lower the discharge seat and the filter bag connected to it. When the filter bag needs to be thoroughly cleaned or replaced, the mechanism can lower the discharge seat together with the filter bag and move it to a suitable position. This process can completely and thoroughly turn the inner surface of the filter bag out and expose it to the outside without disassembling the filter bag. The staff can intuitively and conveniently perform a comprehensive manual brushing or inspection of the inner surface of the filter bag without crawling into the equipment, ensuring that there are no dead corners in the cleaning. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the internal structure of the mounting tank of this utility model;
[0016] Figure 3 This is a schematic diagram of the internal structure of the mounting rod of this utility model;
[0017] Figure 4 This is a schematic diagram of the material discharge seat of this utility model;
[0018] Figure 5 This is a schematic diagram of the rotating ring structure of this utility model;
[0019] Figure 6 For the present utility model Figure 5 Enlarged view of the structure at point A;
[0020] In the diagram: 1. Mounting tank; 2. Mounting frame; 3. Filter bag; 4. Discharge seat; 5. Collection pipe; 6. Mounting ring; 7. First gear ring; 8. Closing plate; 9. Mounting shaft; 10. First gear; 11. Mounting rod; 12. First telescopic rod; 13. Second telescopic rod; 14. Threaded rod; 15. Keyway; 16. Threaded pipe; 17. Key block; 18. Rotary ring; 19. Second gear ring; 20. Drive wheel; 21. Scraper; 22. Slide; 23. Insert rod; 24. First spring; 25. Rack; 26. Second gear; 27. Handle; 28. Torsion spring; 29. Slide rod; 30. Second spring; 31. Base frame. Detailed Implementation
[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0022] This utility model provides a technical solution: such as Figures 1-6As shown in this embodiment, an automated filter bag cleaning device includes a base frame 31 and an installation tank 1. An installation frame 2 is fixedly installed on the installation tank 1, and a filter bag 3 is fixedly installed inside the installation frame 2. A discharge seat 4 is provided inside the installation tank 1. The lower end of the filter bag 3 is fixedly connected to the discharge seat 4. A collecting pipe 5 is threadedly connected to the lower part of the discharge seat 4. An installation ring 6 is rotatably installed inside the discharge seat 4, and a first toothed ring 7 is sleeved on the installation ring 6. Multiple sets of annularly distributed closing plates 8 are provided inside the discharge seat 4. All sets of closing plates 8 are rotatably connected to the discharge seat 4 via installation shafts 9. Multiple sets of installation shafts 9 are annularly distributed around the installation ring 6, and each set of installation shafts 9 is sleeved with a first gear 10. All sets of first gears 10 are meshed with the first toothed ring 7. A rotating ring 18 is rotatably installed inside the installation tank 1. A second toothed ring 19 is fitted onto the rotating ring 18. A drive wheel 20 is rotatably mounted inside the installation tank 1, and the drive wheel 20 meshes with the second toothed ring 19. A scraper 21 is movably engaged on the rotating ring 18, and the scraper 21 is fitted against the inner surface of the filter bag 3. Two sets of slides 22 are slidably mounted inside the rotating ring 18, and each set of slides 22 has a fixed insert rod 23, which is movably engaged with the scraper 21. A first spring 24 is fitted onto each set of insert rods 23, and the two ends of the first spring 24 are fixedly connected to the insert rod 23 and the rotating ring 18, respectively. A rack 25 is fixedly mounted on each set of slides 22, and a second gear 26 is provided between the two sets of racks 25. The second gear 26 meshes with each set of racks 25, and the second gear 26 is connected to the handle 27. The rotating ring 18 is rotatably connected, and two sets of slides 22 are centrally symmetrically distributed about the handle 27. A torsion spring 28 is sleeved on the handle 27, and the two ends of the torsion spring 28 are fixedly connected to the second gear 26 and the rotating ring 18, respectively. Two sets of slide rods 29 corresponding to the slides 22 are fixedly installed inside the rotating ring 18. The slides 22 and the corresponding slide rods 29 are slidably sleeved. Two sets of symmetrically distributed second springs 30 are sleeved on the slide rods 29, and the two ends of the second springs 30 are fixedly connected to the slides 22 and the rotating ring 18, respectively. Materials containing impurities, such as Lyocell spinning solution, enter the installation tank 1 and achieve solid-liquid separation through the filter bag 3. The filtrate seeps out through the wall of the filter bag 3, and the clean liquid is discharged from the installation tank 1. Viscous impurities such as gel and crystals are trapped on the inner wall and bottom of the filter bag 3. Usually, in the installation tank 1 When the closing plate 8 in the discharge seat 4 is in the closed state, i.e., the mounting ring 6 is stationary, it forms a sealed bottom support to prevent impurities from leaking out. When the resistance of the filter bag 3 increases, the flow rate decreases, or during regular maintenance, the cleaning program is activated. The motor in the discharge seat 4 drives a set of mounting shafts 9 to rotate, which, together with multiple sets of first gears 10 and first toothed rings 7, enables the synchronous opening of multiple sets of closing plates 8, opening the discharge seat 4 and forming a slag discharge port at the bottom of the filter bag 3. At the same time, the motor on the mounting tank 1 drives the drive wheel 20 to rotate. The drive wheel 20 meshes with the second toothed ring 19, driving the rotating ring 18 to rotate. The scraper 21, fixed to the rotating ring 18, moves in a circular motion against the inner wall of the filter bag 3, scraping off the impurities attached to the inner surface of the filter bag 3. The scraped impurities, under the influence of gravity or water flow, fall from the slag discharge port opened at the bottom into the collection pipe 5 and are discharged.Simultaneously, when the handle 27 on the rotating ring 18 rotates, it engages with the second gear 26 and two sets of second racks 25, causing the two sets of slides 22 to drive the two sets of insert rods 23 to slide synchronously to both sides, releasing the fixed position of the upper scraper 21 and facilitating the disassembly and replacement of the scraper 21 by the staff.
[0023] like Figure 2 and Figure 3 As shown, an installation rod 11 is fixedly installed on the base frame 31. The installation rod 11 is correspondingly set with the discharge seat 4. A first telescopic rod 12 is slidably installed inside the installation rod 11. A second telescopic rod 13 is slidably installed inside the first telescopic rod 12. The lower end of the second telescopic rod 13 is fixedly connected to the discharge seat 4. A threaded rod 14 is rotatably installed inside the installation rod 11. The lower end of the threaded rod 14 passes through the first telescopic rod 12 and is threadedly connected to the first telescopic rod 12. A threaded tube 16 is rotatably installed inside the first telescopic rod 12. The lower end of the threaded tube 16 passes through the second telescopic rod 13 and is threadedly connected to the second telescopic rod 13. Two sets of symmetrically distributed keyways 15 are opened on the threaded rod 14. Two sets of symmetrically distributed key blocks 17 are provided inside the threaded tube 16. The two sets of key blocks 17 are correspondingly set with the keyways 15. The threaded tube 16 slides with the corresponding threaded rod 14 through the key blocks 17 and keyways 15. When the filter bag 3 needs to be thoroughly cleaned or replaced, the motor in the mounting rod 11 drives the threaded rod 14 to rotate, which drives the first telescopic rod 12, which is threaded to the threaded rod 14, to slide upward along the mounting rod 11. Under the constraint of the key block 17 and the keyway 15, the threaded tube 16 rotates synchronously with the threaded rod 14, which drives the second telescopic rod 13, which is threaded to the threaded tube 16, to slide upward. The whole system smoothly carries the discharge seat 4 and the filter bag 3 fixed on it out of the installation tank 1, flips the filter bag 3 over, and completely flips it outward. The inner wall of the filter bag 3 is completely pulled out of the installation tank 1 and flipped outward. The exposed inner wall of the filter bag 3 can be directly manually brushed, high-pressure washed or replaced without dead corners. The lifting mechanisms such as the first telescopic rod 12 and the second telescopic rod 13 operate in reverse to lift the filter bag 3 module to the working position. The closing plate 8 closes the seal and continues the filtration work.
[0024] This invention provides an automated filter bag cleaning device. Its working principle is as follows: Materials containing impurities, such as lyocell spinning solution, enter the installation tank 1. Solid-liquid separation is achieved through the filter bag 3. The filtrate seeps out through the wall of the filter bag 3, and the clean liquid is discharged from the installation tank 1. Viscous impurities such as gels and crystals are trapped on the inner wall and bottom of the filter bag 3. Normally, the closing plate 8 in the discharge seat 4 of the installation tank 1 is in the closed state, i.e., the installation ring 6 is stationary, forming a sealed base to prevent impurity leakage. When the resistance of the filter bag 3 increases, the flow rate decreases, or during regular maintenance, the cleaning program is activated. In the discharge seat 4, a motor drives a set of mounting shafts 9 to rotate, which, in conjunction with multiple sets of first gears 10 and first gear rings 7, synchronously opens multiple sets of closing plates 8, opening the discharge seat 4 and forming a slag discharge port at the bottom of the filter bag 3. At the same time, the motor on the mounting tank 1 drives the drive wheel 20 to rotate, and the drive wheel 20 meshes with the second gear ring 19 to drive the rotating ring 18 to rotate. The scraper 21, fixed to the rotating ring 18, moves in a circular motion against the inner wall of the filter bag 3, scraping off the impurities attached to the inner surface of the filter bag 3. The scraped impurities fall into the collection tank from the slag discharge port opened at the bottom under the influence of gravity or water flow. When the material pipe 5 is discharged, the handle 27 on the rotating ring 18 rotates, cooperating with the second gear 26 and two sets of second racks 25 to cause the two sets of slides 22 to drive the two sets of insert rods 23 to slide synchronously to both sides, releasing the fixed position of the upper scraper 21, making it convenient for staff to disassemble and replace the scraper 21. When it is necessary to thoroughly clean or replace the filter bag 3, the motor in the mounting rod 11 drives the threaded rod 14 to rotate, driving the first telescopic rod 12, which is threadedly connected to the threaded rod 14, to slide upward along the mounting rod 11. Under the constraint of the key block 17 and the keyway 15, the threaded tube 16... As the threaded rod 14 rotates synchronously, the second telescopic rod 13, which is threadedly connected to the threaded tube 16, slides upward. The entire assembly smoothly carries the discharge seat 4 and the filter bag 3 fixed on it out of the installation tank 1. The filter bag 3 is flipped over completely, and its inner wall is completely pulled out of the installation tank 1 and exposed to the outside. The exposed inner wall of the filter bag 3 can be directly manually brushed, high-pressure washed, or replaced without any dead angles. The lifting mechanisms, such as the first telescopic rod 12 and the second telescopic rod 13, operate in reverse to lift the filter bag 3 module to the working position, and the closing plate 8 closes and seals.
[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An automated filter bag cleaning device, comprising a base frame (31) and a mounting tank (1), characterized in that: An installation frame (2) is fixedly installed on the installation tank (1). A filter bag (3) is fixedly installed inside the installation frame (2). A discharge seat (4) is provided inside the installation tank (1). The lower end of the filter bag (3) is fixedly connected to the discharge seat (4). A collection pipe (5) is threadedly connected to the lower part of the discharge seat (4). An installation ring (6) is rotatably installed inside the discharge seat (4). A first toothed ring (7) is sleeved on the installation ring (6). Multiple sets of annularly distributed closing plates (8) are provided inside the discharge seat (4). Multiple sets of closing plates (8) are rotatably connected to the discharge seat (4) through an installation shaft (9). The mounting shafts (9) are distributed in a ring around the mounting ring (6). Multiple sets of mounting shafts (9) are fitted with first gears (10). Multiple sets of first gears (10) are meshed with first gear rings (7). A rotating ring (18) is rotatably installed inside the mounting tank (1). A second gear ring (19) is fitted on the rotating ring (18). A drive wheel (20) is rotatably installed inside the mounting tank (1). The drive wheel (20) is meshed with the second gear ring (19). A scraper (21) is movably engaged on the rotating ring (18). The scraper (21) is fitted against the inner surface of the filter bag (3).
2. The automated filter bag cleaning device according to claim 1, characterized in that: Two sets of slides (22) are slidably installed inside the rotating ring (18). Each set of slides (22) is fixedly installed with a plug rod (23). The two sets of plug rods (23) are respectively movably engaged with the scraper rod (21). Each set of plug rods (23) is sleeved with a first spring (24). The two ends of the first spring (24) are respectively fixedly connected to the plug rod (23) and the rotating ring (18).
3. The automated filter bag cleaning device according to claim 2, characterized in that: Both sets of slides (22) are fixedly mounted with racks (25), and a second gear (26) is provided between the two sets of racks (25). The second gear (26) meshes with the two sets of racks (25) respectively. The second gear (26) is rotatably connected to the rotating ring (18) through the handle (27). The two sets of slides (22) are centrally symmetrical about the handle (27). A torsion spring (28) is sleeved on the handle (27). The two ends of the torsion spring (28) are fixedly connected to the second gear (26) and the rotating ring (18) respectively. Two sets of slide rods (29) corresponding to the slides (22) are fixedly installed in the rotating ring (18). The slides (22) and the corresponding slide rods (29) are slidably sleeved.
4. The automated filter bag cleaning device according to claim 3, characterized in that: Two sets of symmetrically distributed second springs (30) are sleeved on the slide rod (29), and the two ends of the second springs (30) are fixedly connected to the slide frame (22) and the swivel ring (18) respectively.
5. The automated filter bag cleaning device according to claim 1, characterized in that: An installation rod (11) is fixedly installed on the base frame (31). The installation rod (11) is correspondingly arranged with the discharge seat (4). A first telescopic rod (12) is slidably installed inside the installation rod (11). A second telescopic rod (13) is slidably installed inside the first telescopic rod (12). The lower end of the second telescopic rod (13) is fixedly connected to the discharge seat (4). A threaded rod (14) is rotatably installed inside the installation rod (11). The lower end of the threaded rod (14) passes through the first telescopic rod (12) and is threadedly connected to the first telescopic rod (12). A threaded tube (16) is rotatably installed inside the first telescopic rod (12). The lower end of the threaded tube (16) passes through the second telescopic rod (13) and is threadedly connected to the second telescopic rod (13).
6. The automated filter bag cleaning device according to claim 5, characterized in that: The threaded rod (14) has two sets of symmetrically distributed keyways (15), and the threaded tube (16) has two sets of symmetrically distributed key blocks (17). The two sets of key blocks (17) are correspondingly arranged with the keyways (15). The threaded tube (16) is slidably connected to the corresponding threaded rod (14) through the key blocks (17) and keyways (15).