A bag filter of a self-cleaning filter cartridge

Abstract

The utility model relates to bag filter technical field especially is a kind of bag filter of self-cleaning filter cartridge, including cover plate and filter shell subassembly, filter shell subassembly inside is fixedly connected with gas distribution drive subassembly, filter shell subassembly inside is fixedly connected with filter subassembly by bolt, gas distribution drive subassembly includes baffle, shunt groove and through hole are set up in baffle inside, baffle top end is fixedly connected with telescopic link, telescopic link top end is fixedly connected with annular plate, annular plate inside is embedded and fixedly connected with first permanent magnet, first cleaning brush is fixedly connected in annular plate inside, first permanent magnet and second permanent magnet block magnetism are attracted, second permanent magnet block is embedded and fixedly connected in the inside of built-in ring, in the utility model, device uses contact type cleaning method, synchronously cleans filter cartridge inside and outside, effectively removes stubborn particle, improves cleaning uniformity and efficiency, solves the limitation of traditional backflush technology, enhances filter operation reliability.

Description

Technical Field

[0001] This utility model relates to the field of bag filter technology, specifically a bag filter with a self-cleaning filter cartridge. Background Technology

[0002] Bag filters are a common type of fluid filtration equipment. Their core component is the filter bag, which is usually made of non-woven fabric, polyester fiber, nylon, or other materials. They use the pore structure of the filter bag to intercept solid particles and impurities in the fluid, thereby purifying liquids or gases. Bag filters are characterized by high filtration accuracy, large flow rate, simple operation, and low cost. They are widely used in many industries such as chemical, pharmaceutical, food and beverage, electronics, and water treatment to remove suspended solids, colloids, microorganisms, and other impurities from fluids to meet the fluid purity requirements of different processes. The filter cartridge is the core filtration element of a bag filter. Its surface will adsorb a large amount of dust, particles and other impurities. If it is not cleaned regularly, these impurities will clog the pores of the filter cartridge, resulting in increased filtration resistance and decreased filtration efficiency. Through the self-cleaning function, impurities on the surface of the filter cartridge can be removed in time, so that the filter cartridge always maintains good air permeability and ensures that the filter can filter fluids efficiently. In existing filter cartridge cleaning technologies, only back-flushing technology is used for cleaning. Although it can achieve a certain cleaning effect, it has obvious limitations. Specifically, when the back-flushing airflow reaches the upper part of the filter cartridge, the airflow pressure is significantly reduced, which makes it unable to effectively remove the dust on the upper part of the filter cartridge. This results in poor dust cleaning effect on the upper part of the filter cartridge and uneven dust removal effect. Therefore, a bag filter with a self-cleaning filter cartridge is proposed to address the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a bag filter with a self-cleaning filter cartridge to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A bag filter with a self-cleaning filter cartridge includes a cover plate and a filter housing assembly. An air distribution drive assembly is fixedly connected to the inner side of the filter housing assembly, and a filter assembly is fixedly connected to the inner side of the filter housing assembly via bolts. The air distribution drive assembly includes a partition plate with a flow-diverting groove and a through-hole on its inner side. A telescopic rod is fixedly connected to the top of the partition plate, and an annular plate is fixedly connected to the top of the telescopic rod. A first permanent magnet is embedded and fixedly connected to the inner side of the annular plate, and a first cleaning brush is fixedly connected to the inner side of the annular plate. The first permanent magnet and a second permanent magnet block are magnetically attracted to each other. The second permanent magnet block is embedded and fixedly connected to the inner side of an internal ring. A second cleaning brush is fixedly connected to the lower end of the internal ring, and the internal ring is embedded and installed inside the filter cartridge.

[0005] As a further optimization of this utility model, the filter housing assembly includes a housing, a cover plate is fixedly connected to the top of the housing by bolts, and the housing and the cover plate are sealed by a rubber gasket. An input pipe is fixedly connected to the inner side of the housing near the upper end, an output pipe is fixedly connected to the inner side of the housing near the lower end, and an air pump is fixedly connected to the front end of the housing. The inner sides of the input pipe and the output pipe are both connected to the inner side of the housing.

[0006] As a further optimization of this utility model, the following features are provided: a through hole is provided near the lower part of the housing; the front end of the housing near the through hole is fixed and sealed by bolts and rubber gaskets; and the air vent of the air pump is aligned with the through hole of the housing.

[0007] As a further optimization of this utility model, the partition is fixedly connected to the inner side of the housing, and the front end of the partition has an opening that communicates with the through hole of the housing and the opening of the partition communicates with the inside of the diversion channel.

[0008] As a further optimization of this utility model, the partition plate is provided with an air hole near the telescopic rod, the partition plate is connected to the interior of the telescopic rod through the air hole, and the multiple cylindrical shells of the telescopic rod are sealed with rubber rings.

[0009] As a further optimization of this utility model, the following features are provided: an inner seat is fixedly connected to the inner side of the housing; a rubber sealing ring is fixedly connected to the top of the inner seat; the inner seat is fixedly connected to the base plate by bolts; the screw hole on the inner side of the inner seat is a blind hole; and the bolt connecting the inner seat and the base plate is located around the rubber sealing ring.

[0010] As a further optimization of this utility model, the substrate is fixed and sealed to the filter cartridge by bolts and rubber rings, the inner side of the filter cartridge is fixed and sealed to the filter bag by bolts and rubber rings, and the filter bag and the inner side of the filter cartridge are provided with a gap for the internal ring to move up and down.

[0011] As a further optimization of this utility model, the outer side of the built-in ring is in clearance fit with the inner side of the filter cartridge, the second cleaning brush is attached to the inner side of the filter cartridge, the outer side of the filter cartridge is covered by an annular plate, and the outer side of the filter cartridge is attached to the first cleaning brush.

[0012] Compared with the prior art, the beneficial effects of this utility model are: In this invention, by setting up a filter housing assembly, an air distribution drive assembly, and a filter assembly, the device, based on the original backflushing cleaning, simultaneously cleans the inner and outer sides of the filter cartridge through a contact cleaning method. This effectively removes stubbornly adhered particles, significantly improves the uniformity and effectiveness of the cleaning effect, and solves the problem of uneven cleaning caused by the attenuation of airflow pressure in traditional backflushing technology. As a result, it extends the service life of the filter cartridge, reduces maintenance costs, and improves the operating efficiency and reliability of the filter. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded structural diagram of the entire utility model; Figure 3 This is a cross-sectional structural diagram of the filter housing assembly of this utility model; Figure 4 This is a schematic diagram of the built-in base structure of this utility model; Figure 5 This is a cross-sectional structural diagram of the gas distribution drive assembly of this utility model; Figure 6 This utility model Figure 5 A schematic diagram of the structure at point A; Figure 7 This is a cross-sectional structural diagram of the filter assembly of this utility model; Figure 8 This is a schematic diagram of the built-in circular ring structure of this utility model.

[0014] In the diagram: 1. Cover plate; 2. Filter housing assembly; 21. Housing; 22. Inlet pipe; 23. Outlet pipe; 24. Air pump; 25. Internal base; 26. Rubber sealing ring; 3. Gas distribution drive assembly; 31. Baffle plate; 32. Diversion channel; 33. Through port; 34. Telescopic rod; 35. Annular plate; 36. First permanent magnet; 37. First cleaning brush; 4. Filter assembly; 41. Substrate; 42. Filter cartridge; 43. Filter bag; 44. Built-in ring; 45. Second permanent magnet block; 46. Second cleaning brush. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0017] Please see Figures 1-8 This utility model provides a technical solution: A bag filter with a self-cleaning filter cartridge includes a cover plate 1 and a filter housing assembly 2. A gas distribution drive assembly 3 is fixedly connected to the inside of the filter housing assembly 2, and a filter assembly 4 is fixedly connected to the inside of the filter housing assembly 2 by bolts. The gas distribution drive assembly 3 includes a partition plate 31. A flow distribution groove 32 and a through port 33 are opened on the inside of the partition plate 31. A telescopic rod 34 is fixedly connected to the top of the partition plate 31. An annular plate 35 is fixedly connected to the top of the telescopic rod 34. A first permanent magnet 36 is embedded and fixedly connected to the inside of the annular plate 35. A first cleaning brush 37 is fixedly connected to the inside of the annular plate 35. The first permanent magnet 36 and a second permanent magnet block 45 are magnetically attracted. The second permanent magnet block 45 is embedded and fixedly connected to the inside of an internal ring 44. A second cleaning brush 46 is fixedly connected to the lower end of the internal ring 44. The internal ring 44 is embedded and installed inside the filter cartridge 42.

[0018] As a further implementation of this solution, the filter housing assembly 2 includes a housing 21. A cover plate 1 is bolted to the top of the housing 21 and sealed with a rubber gasket. An input pipe 22 is fixedly connected to the inner side of the housing 21 near its upper end, and an output pipe 23 is fixedly connected to the inner side of the housing 21 near its lower end. An air pump 24 is fixedly connected to the front end of the housing 21. The inner sides of both the input pipe 22 and the output pipe 23 communicate with the inner side of the housing 21. A through hole is provided near the lower part of the housing 21, and the front end of the housing 21 near the through hole is fixed and sealed with bolts and a rubber gasket. The vent of the air pump 24 is aligned with the through hole of the housing 21. Through the above configuration... This structural design not only enhances the overall stability of the device, but also ensures good sealing between the housing 21 and the cover plate 1 through the sealing of bolts and rubber gaskets, as well as the sealing between the through hole of the housing 21 and the vent of the air pump 24, preventing gas leakage and improving the reliability of the device. At the same time, the configuration of the inlet pipe 22 and the outlet pipe 23 provides channels for subsequent airflow guidance and distribution, which helps to achieve efficient airflow circulation, thereby improving the cleaning effect and extending the service life of the filter cartridge. In addition, the alignment design of the through hole and the vent allows the airflow to pass through smoothly, providing stable airflow support for subsequent cleaning operations, enhancing the cleaning effect and reducing maintenance costs. As a further implementation of this solution, the partition 31 is fixedly connected to the inner side of the housing 21. The front end of the partition 31 has an opening that communicates with the through hole of the housing 21. The opening of the partition 31 is also connected to the inside of the diversion channel 32. An air hole is provided near the telescopic rod 34 on the partition 31. The partition 31 is connected to the inside of the telescopic rod 34 through the air hole. The multiple shells of the telescopic rod 34 are sealed with rubber rings. With the above configuration, this structural layout not only enhances the overall stability of the device, but also provides a smooth channel for airflow through the communication between the opening of the partition 31, the through hole of the housing 21, and the inside of the diversion channel 32. The communication between the air hole and the inside of the telescopic rod 34 further optimizes the airflow distribution, allowing the airflow to enter the multiple shells of the telescopic rod 34 evenly, thereby controlling the upward movement of the annular plate 35 and providing driving force for the movement of the cleaning structure. The through-hole 33 serves to facilitate the flow of fluid inside the housing 21. As a further implementation of this solution, an inner seat 25 is fixedly connected to the inner side of the housing 21, and a rubber sealing ring 26 is fixedly connected to the top of the inner seat 25. The inner seat 25 is fixedly connected to the base plate 41 by bolts. The screw hole opened on the inner side of the inner seat 25 is a blind hole. The bolt connecting the inner seat 25 and the base plate 41 is located on the periphery of the rubber sealing ring 26. Through the above settings, this structural design not only enhances the overall stability of the device, but also ensures a firm connection between the inner seat 25 and the base plate 41 through the bolt connection. The blind hole design can prevent fluid from overflowing through the screw hole. As a further implementation of this solution, the substrate 41 is fixed and sealed to the filter cartridge 42 by bolts and rubber rings. The inner side of the filter cartridge 42 is fixed and sealed to the filter bag 43 by bolts and rubber rings. The filter bag 43 and the inner side of the filter cartridge 42 are provided with a gap for the internal ring 44 to move up and down. Through the above settings, this design ensures good sealing between the substrate 41 and the filter cartridge 42 through the sealing of bolts and rubber rings, prevents gas leakage, and improves the utilization efficiency of airflow. At the same time, the gap between the filter bag 43 and the inner side of the filter cartridge 42 provides sufficient space for the internal ring 44 to move up and down, so that the internal ring 44 can perform effective cleaning action under the action of airflow, which significantly improves the cleaning effect. As a further implementation of this solution, the outer side of the built-in ring 44 is fitted with the inner side of the filter cartridge 42 with a clearance, the second cleaning brush 46 is attached to the inner side of the filter cartridge 42, the outer side of the filter cartridge 42 is covered by the annular plate 35, and the outer side of the filter cartridge 42 is attached to the first cleaning brush 37. Through the above arrangement, this clearance fit and attachment design not only enhances the overall stability of the device, but also ensures the smooth movement of the built-in ring 44 inside the filter cartridge 42, improving the efficiency of the cleaning action. At the same time, the covering of the filter cartridge 42 by the annular plate 35 and the attachment of the first cleaning brush 37 to the outer side of the filter cartridge 42 further enhance the structural stability of the device and ensure the reliability of the cleaning process.

[0019] Workflow: During installation, place the built-in ring 44 inside the filter cartridge 42. Limiting structures are provided on the left end of the built-in ring 44 and the inner side of the filter cartridge 42 to ensure that the second permanent magnet block 45 aligns with the first permanent magnet 36 after installation. Simultaneously, adjust the angle of the built-in ring 44 to facilitate alignment between the second permanent magnet block 45 and the first permanent magnet 36. The built-in ring 44 slides down into the filter cartridge 42 under gravity. Insert the filter bag 43 into the filter cartridge 42, aligning the ring at the top of the filter bag 43 with the filter cartridge 42. Seal the filter cartridge 42 and filter bag 43. Place a rubber gasket on the upper end of the base plate 41, and then insert the filter cartridge 42. Insert the filter bag 43 and filter cartridge 42 into the substrate 41 and press them together with bolts. At this time, the filter cartridge 42 is sealed to the substrate 41. Then place the substrate 41 on the upper end of the inner seat 25, while ensuring that the filter cartridge 42 is inserted into the inner side of the annular plate 35. The bottom end of the substrate 41 contacts the rubber sealing ring 26. The screw hole of the substrate 41 is aligned with the screw hole of the inner seat 25. At this time, the first permanent magnet 36 and the second permanent magnet block 45 generate magnetic attraction. Fix the substrate 41 to the inner seat 25 with bolts. Place the rubber pad on the upper end of the housing 21. Cover the upper end of the housing 21 and fix the cover plate 1 to the housing 21 with bolts. At this time, the installation is completed. When cleaning the filter cartridge 42, the air pump 24 is started to blow air into the housing 21 and the partition plate 31. At this time, the external air is delivered to the inside of the distribution groove 32 and distributed to the inside of multiple telescopic rods 34 through the distribution groove 32. Under the action of air pressure, and with the sealing between the cylinder shells of the telescopic rods 34, the telescopic rods 34 extend and push the annular plate 35 to move upward. The annular plate 35 drives the first permanent magnet 36 and the first cleaning brush 37 to move upward at the same time. The first cleaning brush 37 cleans the outer periphery of the filter cartridge 42. Due to the magnetic attraction between the first permanent magnet 36 and the second permanent magnet block 45, the second permanent magnet block 45 will drive the inner ring 44 and the second cleaning brush 46 to move accordingly. The second cleaning brush 46 cleans the inner side of the filter cartridge 42, thereby achieving the cleaning effect. Based on the above principles, the device, in addition to the original backflushing cleaning method, simultaneously cleans the inner and outer sides of the filter cartridge 42 through contact cleaning. This cleaning can remove stubbornly adhered particles, significantly reduce the reduction in cleaning effect due to pressure decay, improve the uniformity and effectiveness of cleaning, extend the life of the filter cartridge, and reduce maintenance costs.

[0020] 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. A bag filter with a self-cleaning filter cartridge, comprising a cover plate (1) and a filter housing assembly (2), characterized in that: The filter housing assembly (2) is fixedly connected to the gas distribution drive assembly (3), and the filter assembly (4) is fixedly connected to the filter housing assembly (2) by bolts. The gas distribution drive assembly (3) includes a partition (31), a flow distribution groove (32) and a through opening (33) are provided on the inner side of the partition (31), a telescopic rod (34) is fixedly connected to the top of the partition (31), an annular plate (35) is fixedly connected to the top of the telescopic rod (34), a first permanent magnet (36) is embedded and fixedly connected to the inner side of the annular plate (35), and a first cleaning brush (37) is fixedly connected to the inner side of the annular plate (35). The first permanent magnet (36) and the second permanent magnet block (45) are magnetically attracted to each other. The second permanent magnet block (45) is embedded and fixedly connected to the inner side of the built-in ring (44). The built-in ring (44) is fixedly connected to the lower end of the second cleaning brush (46). The built-in ring (44) is embedded and installed inside the filter cartridge (42).

2. A bag filter with a self-cleaning filter cartridge according to claim 1, characterized in that: The filter housing assembly (2) includes a housing (21). A cover plate (1) is fixedly connected to the top of the housing (21) by bolts, and the housing (21) and the cover plate (1) are sealed by a rubber gasket. An input pipe (22) is fixedly connected to the inner side of the housing (21) near the upper end, and an output pipe (23) is fixedly connected to the inner side of the housing (21) near the lower end. An air pump (24) is fixedly connected to the front end of the housing (21). The inner sides of the input pipe (22) and the output pipe (23) are both connected to the inner side of the housing (21).

3. A bag filter with a self-cleaning filter cartridge according to claim 2, characterized in that: The housing (21) has a through hole near the bottom. The front end of the housing (21) near the through hole is fixed and sealed by bolts and rubber gaskets. The ventilation port of the air pump (24) is aligned with the through hole of the housing (21).

4. A bag filter with a self-cleaning filter cartridge according to claim 1, characterized in that: The partition (31) is fixedly connected to the inner side of the housing (21). The front end of the partition (31) has an opening. The opening at the front end of the partition (31) is connected to the through hole of the housing (21). The opening of the partition (31) is connected to the inside of the diversion channel (32).

5. A bag filter with a self-cleaning filter cartridge according to claim 1, characterized in that: The partition (31) has an air hole near the telescopic rod (34), and the partition (31) is connected to the inside of the telescopic rod (34) through the air hole. The multiple shells of the telescopic rod (34) are sealed with rubber rings.

6. A bag filter with a self-cleaning filter cartridge according to claim 3, characterized in that: An inner seat (25) is fixedly connected to the inner side of the housing (21). A rubber sealing ring (26) is fixedly connected to the top of the inner seat (25). The inner seat (25) is fixedly connected to the base plate (41) by bolts. The screw hole opened on the inner side of the inner seat (25) is a blind hole. The bolt connecting the inner seat (25) and the base plate (41) is located on the periphery of the rubber sealing ring (26).

7. A bag filter with a self-cleaning filter cartridge according to claim 6, characterized in that: The substrate (41) is fixed and sealed to the filter cylinder (42) by bolts and rubber rings. The inner side of the filter cylinder (42) is fixed and sealed to the filter bag (43) by bolts and rubber rings. The filter bag (43) and the inner side of the filter cylinder (42) are provided with a gap for the internal ring (44) to move up and down.

8. A bag filter with a self-cleaning filter cartridge according to claim 1, characterized in that: The outer side of the built-in ring (44) is fitted with the inner side of the filter cartridge (42) with a gap. The second cleaning brush (46) is attached to the inner side of the filter cartridge (42). The outer side of the filter cartridge (42) is covered by an annular plate (35). The outer side of the filter cartridge (42) is attached to the first cleaning brush (37).

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