Composite dust filter bag capable of realizing hierarchical filtration

Abstract

The utility model relates to related technical field of dust filter bag, especially a composite dust filter bag that can realize grading filtration, including base, the upper end fixed mounting of base has the casing, the upper end fixed mounting of casing has the partition, both ends of partition all run through and have the baffle of fixed connection, both ends of partition all are provided with first dust filter bag, the first limiting block is slipped into left side limit groove, and the first limiting block is driven to the second limiting block of upper end through first connecting rod synchronous and moves left, and further pushes the third limiting block of left side and compresses reset spring and separates gear, the third limiting block of right side is tightly engaged with gear under the elastic force of reset spring at this moment, and the limitation gear counterclockwise rotates, drives the threaded rod accurate spin and enters the threaded hole of first dust filter bag upper end fixed block, realizes the stable locking of filter bag, the whole process does not need to help special tool, and through one way rotation limit, the locking failure or filter bag fixation unstable problem caused by misoperation is prevented.

Description

Technical Field

[0001] This utility model relates to the technical field of dust collector filter bags, and in particular to a composite dust collector filter bag that can achieve graded filtration. Background Technology

[0002] In the industrial production sector, dust collector filter bags are a key component for controlling dust diffusion, maintaining a clean working environment, and meeting environmental emission requirements. Dust generated by different processes has significant differences in particle size distribution, requiring filter bags to have the ability to classify and process dust of different particle sizes in order to achieve precise filtration and improve overall purification efficiency. Under complex working conditions, filter bags need to adapt to fluctuations in dust concentration while taking into account the needs of long-term stable operation and convenient maintenance, so as to reduce equipment downtime and lower operation and maintenance costs while ensuring filtration effect.

[0003] Traditional dust collector filter bags rely on bolts or a single limit switch for locking and unlocking, and lack a unidirectional rotation limit function. This makes them prone to locking failure or unstable filter bag fixation due to misoperation. Furthermore, this structure is difficult to adapt to zoned operations, and filter bag maintenance requires a complete shutdown, leading to production interruption.

[0004] To address the aforementioned issues, a search revealed a patent with publication number CN222550424U that discloses a multi-stage bag filter system. The patent describes a process where "multiple filter bags connected to a fixed frame are placed sequentially according to their filtration level, with F5-level filter bags near the air inlet and F9-level filter bags further away. After placement, the first and second pressure blocks are placed on the first and second bolts respectively and their positions adjusted. Then, the first and second nuts are rotated to fix the first and second pressure blocks, thereby securing the fixed frame and thus fixing the filter bags." However, fixing the filter bags requires repeated adjustments to the pressure block positions and tightening of the nuts. Uneven tightening force or misoperation can easily lead to displacement of the fixed frame and improper fit of the filter bags.

[0005] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Utility Model Content

[0006] The purpose of this utility model is to provide a composite dust collector filter bag that can achieve graded filtration, so as to solve the problems mentioned in the background art, that the traditional dust collector filter bag locking and unlocking relies on bolts or a single limit, and lacks a unidirectional rotation limit function, which is prone to locking failure or unstable filter bag fixation due to misoperation. Furthermore, the structure is difficult to adapt to zoned operations, and filter bag maintenance requires a complete shutdown, resulting in production interruption.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a composite dust collector filter bag capable of graded filtration, comprising a base, a housing fixedly mounted on the upper end of the base, a partition fixedly mounted on the upper end of the housing, baffles fixedly connected to both ends of the partition, a first dust collector filter bag disposed at both ends of the partition, a fixing block fixedly mounted on the upper end of the first dust collector filter bag, an mounting plate fixedly mounted on the front end of the housing, a first connecting rod fixedly mounted to both ends of the mounting plate, a first limiting block fixedly mounted on the lower end of the first connecting rod, a limiting groove fixedly mounted on the lower end of the mounting plate, a second limiting block fixedly mounted on the upper end of the first connecting rod, a second connecting rod fixedly mounted to both ends of the mounting plate, a third limiting block sleeved on the outer ring of the second connecting rod, a return spring fixedly mounted on the left end of the third limiting block, a gear disposed on the upper end of the mounting plate, and threaded rods fixedly connected to both ends of the gear.

[0008] Preferably, the partition has a groove for the baffle to slide along, and the baffle can block half of the air inlet area after sliding along the groove.

[0009] Preferably, the third limiting block is connected to the mounting plate by a reset spring, a handle is fixedly installed at the lower end of the threaded rod, and a second dust filter bag is provided at both ends of the partition.

[0010] Preferably, the front end of the housing is provided with an air inlet pipe, and the rear end of the housing is provided with an air outlet pipe.

[0011] Preferably, the upper end of the housing is provided with an end cap, and there are two sets of end caps, which are symmetrically distributed on both sides of the partition.

[0012] Preferably, a limiting ring is fixedly installed at the front end of the end cap, and a pressing rod is fixedly connected to both ends of the limiting ring. An inverted conical block is fitted around the outer ring of the pressing rod, and a positive conical block is fitted around the outer ring of the pressing rod. The inverted conical block and the pressing rod are connected by a first spring.

[0013] Preferably, a fixing ring is fixedly installed at the front end of the housing, and a limit rod is fixedly connected to both ends of the fixing ring. A second spring is sleeved on the outer ring of the limit rod, and a locking block is fixedly installed at the front end of the limit rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. When locking, slide the first limiting block into the left limiting groove. The first limiting block drives the second limiting block at the top to move to the left through the first connecting rod. This pushes the third limiting block on the left to compress the reset spring and disengage from the gear. At this time, the third limiting block on the right is tightly engaged with the gear under the elastic force of the reset spring, restricting the gear from rotating counterclockwise and allowing it to rotate clockwise. Finally, the threaded rod is precisely screwed into the threaded hole of the upper fixing block of the first dust filter bag, achieving stable locking of the filter bag. When unlocking, simply slide the first limiting block into the right limiting groove. Similarly, push the third limiting block on the right to disengage from the gear and the third limiting block on the left to engage and limit the gear, allowing it to rotate counterclockwise. This drives the threaded rod to unscrew out of the threaded hole of the fixing block, completing the unlocking process. The entire process does not require special tools, and the unidirectional rotation limiting eliminates the problem of locking failure or unstable filter bag fixing caused by misoperation. 2. To address the issue that traditional structures cannot adapt to zoned operations, requiring machine shutdowns for maintenance, two sets of baffles that can independently slide back and forth along sliding grooves are installed at both ends of the partition. When maintenance is required on a single side of the filter bag, simply push the baffle on the corresponding side until it slides to cover half of the air intake area on that side. At this time, the baffle on the side not being maintained remains fully open, and the dust collector filter bag on that side can normally receive airflow and carry out filtration operations without interrupting the operation of the overall equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the interlocking structure of the inverted conical block and the locking block of this utility model; Figure 3 This is a schematic diagram of the structure of the baffle and partition of this utility model. Figure 4 This is a schematic diagram of the mutual cooperation between the first limiting block and the limiting groove of this utility model; Figure 5 This is a schematic diagram of the interaction between the third limiting block and the gear in this utility model.

[0016] In the diagram: 1. Base; 2. Housing; 3. Partition; 4. Baffle; 5. First dust filter bag; 6. Fixing block; 7. Mounting plate; 8. First connecting rod; 9. First limiting block; 10. Limiting groove; 11. Second limiting block; 12. Second connecting rod; 13. Third limiting block; 14. Return spring; 15. Gear; 16. Threaded rod; 17. Handle; 18. Second dust filter bag; 19. Air inlet pipe; 20. Air outlet pipe; 21. End cap; 22. Limiting ring; 23. Pressing rod; 24. Inverted conical block; 25. Positive conical block; 26. First spring; 27. Fixing ring; 28. Limiting rod; 29. ​​Second spring; 30. Locking block. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-5 This utility model provides a technical solution: a composite dust collector filter bag capable of graded filtration, comprising a base 1, a housing 2 fixedly installed on the upper end of the base 1, a partition 3 fixedly installed on the upper end of the housing 2, baffles 4 fixedly connected through both ends of the partition 3, a first dust collector filter bag 5 provided at both ends of the partition 3, a fixing block 6 fixedly installed on the upper end of the first dust collector filter bag 5, an installation plate 7 fixedly installed at the front end of the housing 2, a first connecting rod 8 fixedly installed through both ends of the installation plate 7, a first limiting block 9 fixedly installed at the lower end of the first connecting rod 8, a limiting groove 10 fixedly installed at the lower end of the installation plate 7, a second limiting block 11 fixedly installed on the upper end of the first connecting rod 8, a second connecting rod 12 fixedly installed through both ends of the installation plate 7, a third limiting block 13 sleeved on the outer ring of the second connecting rod 12, a return spring 14 fixedly installed on the left end of the third limiting block 13, a gear 15 provided on the upper end of the installation plate 7, and threaded rods 16 fixedly connected through both ends of the gear 15.

[0019] Furthermore, the partition 3 has a groove for the baffle 4 to slide. After the baffle 4 slides along the groove, it can block half of the air inlet area. Through the setting of the baffle 4, it forms a precisely matched sliding structure with the sliding groove of the partition 3. It can move back and forth independently along the groove. When the baffle 4 on one side slides to the working position, it can stably block half of the air inlet area on the corresponding side, creating a relatively closed working space for the maintenance of the first dust filter bag 5 and the second dust filter bag 18 on that side, while keeping the air inlet channel on the other side completely unobstructed, so that the filter bag on the unmaintained side can continue to receive airflow and complete the graded filtration operation.

[0020] Furthermore, the third limiting block 13 is connected to the mounting plate 7 via a reset spring 14. A handle 17 is fixedly installed at the lower end of the threaded rod 16. Second dust filter bags 18 are provided at both ends of the partition plate 3. With the reset spring 14, when locked, the reset spring 14 pushes the right third limiting block 13 to mesh with the gear 15 to restrict counterclockwise rotation.

[0021] Furthermore, an air inlet pipe 19 is provided at the front end of the housing 2, and an air outlet pipe 20 is provided at the rear end of the housing 2. Through the setting of the air outlet pipe 20, clean airflow after being filtered by the first dust removal filter bag 5 and the second dust removal filter bag 18 can be received.

[0022] Furthermore, the upper end of the housing 2 is provided with an end cap 21. There are two sets of end caps 21, which are symmetrically distributed on both sides of the partition 3. Through the setting of the end caps 21, they serve as an openable structure at the upper end of the housing 2. The two sets are symmetrically distributed on both sides of the partition 3 and correspond to the first dust removal filter bag 5 and the second dust removal filter bag 18. After opening, the filter bag installation area can be directly exposed, providing a convenient channel for the regular cleaning, replacement and other maintenance operations of the filter bags.

[0023] Furthermore, a limit ring 22 is fixedly installed at the front end of the end cap 21. Both ends of the limit ring 22 are fixedly connected with a pressing rod 23. The outer ring of the pressing rod 23 is fitted with an inverted conical block 24 and a positive conical block 25. The inverted conical block 24 and the pressing rod 23 are connected by a first spring 26. The pressing rod 23 can serve as the core linkage component for locking the end cap 21. When locking, pushing the pressing rod 23 into the housing 2 can drive the positive conical block 25 to move synchronously. The inclined surface of the outer wall of the positive conical block 25 naturally squeezes the wedge-shaped locking blocks 30 on both sides, forcing the locking blocks 30 to expand outward and then reset and lock under the action of the second spring 29. The mechanical locking can be completed without tools throughout the process.

[0024] Furthermore, a fixing ring 27 is fixedly installed at the front end of the housing 2. Both ends of the fixing ring 27 are fixedly connected to a limiting rod 28. A second spring 29 is sleeved on the outer ring of the limiting rod 28. A locking block 30 is fixedly installed at the front end of the limiting rod 28. With the setting of the locking block 30, when unlocking, pushing the pressing rod 23 a second time can drive the inverted cone block 24 to push the locking block 30 outward again. After pulling the pressing rod 23 outward, the locking block 30 can slide and reset along the inclined surface of the positive cone block 25 and the inverted cone block 24.

[0025] Working principle: Dust-laden airflow enters the housing 2 through the inlet pipe 19, and after being separated by the partition 3, flows to both sides. First, the first dust filter bag 5 intercepts coarse dust particles, and then the second dust filter bag 18 filters fine dust particles. The clean airflow after graded purification is discharged through the outlet pipe 20, completing the filtration operation. When fixing the first dust filter bag 5, the first limiting block 9 slides into the left limiting groove 10. The first limiting block 9 drives the second limiting block 11 to move to the left through the first connecting rod 8, pushing the left third limiting block 13 to compress the return spring 14 along the second connecting rod 12 and disengage from the gear 15. At this time, the right third limiting block 13 engages with the gear 15 under the elastic force of the return spring 14, restricting its counterclockwise rotation. By rotating the gear 15 clockwise through the handle 17, the threaded rod 16 is screwed into the screw of the fixing block 6. The filter bag is locked by a perforated design. To unlock the filter bag, slide the first limiting block 9 into the right limiting groove 10. Similarly, push the right third limiting block 13 to disengage from the gear 15 and the left third limiting block 13 to engage with the gear 15, restricting its clockwise rotation. Turn the handle 17 counterclockwise to make the threaded rod 16 unscrew the fixing block 6, thus completing the unlocking. When inspecting a single-sided filter bag, push the corresponding side baffle 4 along the sliding groove of the partition 3 to block half of the air inlet area on that side and open the corresponding end cover 21. When the end cover 21 is locked, push the pressing rod 23. The positive cone block 25 squeezes the locking block 30 outward and then resets and locks it. To unlock, push the pressing rod 23 again. The inverted cone block 24 pushes the locking block 30 outward again. Pull the pressing rod 23 to open it. The side baffle 4 that is not being inspected remains open, and the filter bag works normally, achieving maintenance without stopping the machine.

[0026] 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 composite dust collector filter bag capable of staged filtration, comprising a base (1), characterized in that: A housing (2) is fixedly installed on the upper end of the base (1). A partition (3) is fixedly installed on the upper end of the housing (2). Baffles (4) are fixedly connected through both ends of the partition (3). A first dust filter bag (5) is provided on both ends of the partition (3). A fixing block (6) is fixedly installed on the upper end of the first dust filter bag (5). An installation plate (7) is fixedly installed on the front end of the housing (2). A first connecting rod (8) is fixedly installed through both ends of the installation plate (7). A first limiter is fixedly installed on the lower end of the first connecting rod (8). Block (9), the lower end of the mounting plate (7) is fixedly installed with a limiting groove (10), the upper end of the first connecting rod (8) is fixedly installed with a second limiting block (11), both ends of the mounting plate (7) are fixedly installed with a second connecting rod (12), the outer ring of the second connecting rod (12) is fitted with a third limiting block (13), the left end of the third limiting block (13) is fixedly installed with a reset spring (14), the upper end of the mounting plate (7) is provided with a gear (15), both ends of the gear (15) are fixedly connected with threaded rods (16).

2. The composite dust collector filter bag capable of graded filtration according to claim 1, characterized in that: The partition (3) has a groove for the baffle (4) to slide. After the baffle (4) slides along the groove, it can block half of the air inlet area.

3. The composite dust collector filter bag capable of staged filtration according to claim 1, characterized in that: The third limiting block (13) is connected to the mounting plate (7) by a reset spring (14), and a handle (17) is fixedly installed at the lower end of the threaded rod (16). A second dust filter bag (18) is provided at both ends of the partition (3).

4. A composite dust collector filter bag capable of graded filtration according to claim 1, characterized in that: The front end of the housing (2) is provided with an air inlet pipe (19), and the rear end of the housing (2) is provided with an air outlet pipe (20).

5. A composite dust collector filter bag capable of graded filtration according to claim 1, characterized in that: The upper end of the housing (2) is provided with an end cap (21), and the end cap (21) is provided in two sets and is symmetrically distributed on both sides of the partition (3).

6. A composite dust collector filter bag capable of graded filtration according to claim 5, characterized in that: A limiting ring (22) is fixedly installed at the front end of the end cap (21). Both ends of the limiting ring (22) are fixedly connected with a pressing rod (23). The outer ring of the pressing rod (23) is fitted with an inverted conical block (24) and a positive conical block (25). The inverted conical block (24) and the pressing rod (23) are connected by a first spring (26).

7. A composite dust collector filter bag capable of staged filtration according to claim 1, characterized in that: A fixing ring (27) is fixedly installed at the front end of the housing (2). Both ends of the fixing ring (27) are fixedly connected to a limiting rod (28). A second spring (29) is sleeved on the outer ring of the limiting rod (28). A locking block (30) is fixedly installed at the front end of the limiting rod (28).

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