A bag mounting structure for a bag filter
The combination structure of isolation plate, keel frame, mounting base, clamping parts and locking parts solves the problem of cumbersome bag replacement in bag dust collectors, and realizes fast and stable bag installation and extended service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI GUFENG MECHANICAL EQUIP CO LTD
- Filing Date
- 2025-07-01
- Publication Date
- 2026-06-23
AI Technical Summary
Existing baghouse dust collectors require the removal of multiple screws when replacing the filter bags, which is a cumbersome process that requires the use of power tools, thus affecting the replacement efficiency.
It adopts a combination structure of isolation plate, keel frame, mounting base, clamping parts and locking parts, and realizes quick installation of cloth bag through mechanical self-locking, without the need for tools.
This technology enables rapid installation and stable fixation of the fabric bags, reducing replacement costs and extending their service life.
Smart Images

Figure CN224388322U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of baghouse dust collectors, specifically to a bag installation structure for a baghouse dust collector. Background Technology
[0002] The filtration mechanism of a baghouse dust collector utilizes the combined effects of gravity, sieving, inertial collision, adsorption, diffusion, and electrostatic attraction. When dust-laden gas passes through the filter cloth, particles larger than the filter cloth's pores settle due to gravity or are blocked by the filter cloth due to inertia. Particles smaller than the filter cloth's pores collide with the filter cloth or are adsorbed by the filter cloth fibers, remaining on the surface and in the pores of the filter cloth, thus achieving dust removal. The dust-laden gas enters the dust hopper from the baghouse dust collector's inlet. At this point, coarser dust particles and agglomerated dust clumps in the dust-laden gas fall directly down, while other dust-laden gas flows upward with the airflow into the housing. When passing through the filter bags with internal metal frames, the dust in the gas is trapped on the outer surface of the filter bags. The purified gas enters the clean chamber at the top of the filter bags and is collected in the outlet duct for discharge.
[0003] Chinese Patent Publication No. CN116272220B discloses a bag filter dust collector. In actual use, when the filter bags reach the end of their service life, workers need to disassemble and replace them. However, disassembly and replacement require workers to remove multiple fixing screws, replace the filter bags, and reinstall them. This makes the disassembly and assembly process cumbersome and requires the assistance of power tools, thus affecting the efficiency of filter bag disassembly and replacement. Therefore, a filter bag installation structure for a bag filter dust collector is proposed to solve the above problems. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a bag installation structure for baghouse dust collectors, which has the advantage of facilitating bag installation. It solves the problem that when the bag reaches the end of its service life, workers need to disassemble and replace the bag. However, disassembly and replacement requires workers to remove multiple fixing screws, replace the bag, and reinstall it, making the disassembly and replacement process cumbersome and requiring the assistance of power tools, thus affecting the efficiency of bag disassembly and replacement.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a bag installation structure for a bag filter dust collector, including an isolation plate, a keel frame on the isolation plate, and a bag on the keel frame;
[0006] The partition plate is fixedly installed with a mounting base for placing the keel frame and the cloth bag. A clamping component for pressing the skirt of the cloth bag is slidably installed on the keel frame. A locking component for locking the clamping component is rotatably installed on the keel frame.
[0007] The mounting base has a positioning groove inside and a self-locking groove on its surface;
[0008] The clamping component is fixedly equipped with a positioning block for clamping the skirt of the cloth bag, and the positioning block is adapted to the positioning groove. The clamping component is also fixedly equipped with a trapezoidal block.
[0009] A square post is fixedly installed on the outer peripheral wall of the locking member, and the square post is adapted to the self-locking groove. A positioning post for pressing the trapezoidal block is fixedly installed on the outer peripheral wall of the locking member.
[0010] Furthermore, the positioning block includes an arc-shaped block and a rubber pad, the arc-shaped block is fixedly connected to the rubber pad, and the arc-shaped block is fixedly installed on the clamping member.
[0011] Furthermore, the trapezoidal block has a groove that is adapted to the positioning post, and the trapezoidal block has an inclined surface with an angle of 30 degrees between the inclined surface and the clamping member.
[0012] Furthermore, the central axes of the locking element, the clamping element, and the mounting base all coincide with the central axis of the keel frame.
[0013] Furthermore, there are four positioning slots and four self-locking slots, which are symmetrical about the central axis of the mounting base.
[0014] Furthermore, there are four positioning blocks and four trapezoidal blocks, and they are symmetrical about the central axis of the clamping component.
[0015] Furthermore, there are four square posts and four positioning posts, which are symmetrical about the central axis of the locking component.
[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0017] This bag installation structure for baghouse dust collectors, equipped with a mounting base, clamping components, and locking components, allows for quick bag installation. Simply insert the frame and bag into the mounting base, then rotate the locking components until the groove engages with the positioning post. The square post and self-locking groove work together to form a mechanical self-lock, quickly completing the bag installation. This avoids cumbersome installation methods that require tools. Furthermore, the mechanical self-locking of the square post and self-locking groove, along with the wedging effect of the positioning post on the trapezoidal block, ensures long-term stability after a single installation, avoiding frequent maintenance. The use of four symmetrically distributed positioning blocks and trapezoidal blocks ensures that the clamping force is evenly applied to the bag skirt, extending the bag's service life and reducing replacement costs. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is an exploded view of the structural keel frame and the cloth bag of this utility model;
[0020] Figure 3 This is an exploded view of the structural keel frame, mounting base, clamping component, and locking component of this utility model;
[0021] Figure 4 This is a connection diagram of the mounting base, clamping component, and locking component of this utility model.
[0022] Figure 5 This is an enlarged view of the clamping and locking components of this utility model.
[0023] Figure 6 This is an enlarged view of the structural mounting base of this utility model;
[0024] Figure 7 This is an enlarged view of the clamping component of this utility model.
[0025] In the diagram: 1. Isolation plate; 2. Keel frame; 3. Cloth bag; 4. Mounting base; 41. Positioning groove; 42. Self-locking groove; 5. Clamping component; 51. Positioning block; 511. Arc-shaped block; 512. Rubber pad; 52. Trapezoidal block; 521. Groove; 522. Inclined surface; 6. Locking component; 61. Square column; 62. Positioning post. Detailed Implementation
[0026] 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.
[0027] Example 1: Please refer to Figure 1-7 The bag installation structure for a bag filter dust collector in this embodiment includes an isolation plate 1, a keel frame 2 on the isolation plate 1, and a bag 3 on the keel frame 2.
[0028] Example 2: Please refer to Figure 1-7 Based on Embodiment 1, an installation seat 4 for placing the keel frame 2 and the cloth bag 3 is fixedly installed on the isolation plate 1, a pressing member 5 for pressing the skirt of the cloth bag 3 is slidably installed on the keel frame 2, and a locking member 6 for locking the pressing member 5 is rotatably installed on the keel frame 2.
[0029] The mounting base 4 has a positioning groove 41 inside and a self-locking groove 42 on the mounting base 4.
[0030] A positioning block 51 for pressing the skirt of the cloth bag 3 is fixedly installed on the clamping member 5, and the positioning block 51 is adapted to the positioning groove 41. A trapezoidal block 52 is fixedly installed on the clamping member 5, so that the positioning block 51 is aligned with the positioning groove 41 of the mounting base 4, and the skirt of the cloth bag 3 is clamped between the clamping member 5 and the mounting base 4.
[0031] A square post 61 is fixedly installed on the outer peripheral wall of the locking member 6, and the square post 61 is adapted to the self-locking groove 42. A positioning post 62 for pressing the trapezoidal block 52 is fixedly installed on the outer peripheral wall of the locking member 6. When the locking member 6 is rotated, the square post 61 on its outer periphery is inserted into the self-locking groove 42, and a mechanical self-lock is formed to prevent the locking member 6 from loosening under the impact of airflow.
[0032] The central axes of the locking component 6, the clamping component 5, and the mounting base 4 are all aligned with the central axis of the keel frame 2, which facilitates the smooth insertion of the keel frame 2 into the mounting base 4 and avoids jamming or unevenness.
[0033] In addition, there are four positioning slots 41 and four self-locking slots 42, which are symmetrical about the central axis of the mounting base 4. There are four positioning blocks 51 and four trapezoidal blocks 52, which are symmetrical about the central axis of the clamping member 5. There are four square columns 61 and four positioning columns 62, which are symmetrical about the central axis of the locking member 6, to ensure uniform force distribution and avoid installation deviations caused by eccentricity.
[0034] Using the above technical solution, the cloth bag 3 is placed outside the keel frame 2, and the skirt of the cloth bag 3 naturally hangs down to the end of the keel frame 2. Then, the assembled cloth bag 3 and keel frame 2 are inserted into the interior of the mounting base 4. At this time, the skirt of the cloth bag 3 hangs down inside the mounting base 4 and covers the positioning groove 41. The clamping member 5 is slid down along the keel frame 2 so that the positioning block 51 is aligned with the positioning groove 41 of the mounting base 4. At this time, the skirt of the cloth bag 3 is clamped between the clamping member 5 and the mounting base 4. The locking member 6 is rotated, and its outer square post 61 is inserted into the self-locking groove 42. At the same time, the positioning post 62 contacts the inclined surface 522 of the trapezoidal block 52. As the locking member 6 rotates, the positioning post 62 is pressed down along the inclined surface 522, pushing the trapezoidal block 52 and causing the clamping member 5 to move down, so that the positioning block 51 further presses the skirt of the cloth bag 3. The groove 521 on the trapezoidal block 52 engages with the positioning post 62 to prevent the locking member 6 from reversing. The cooperation between the square post 61 and the self-locking groove 42 forms a mechanical self-lock.
[0035] Example 3: Please refer to Figure 1-7 Based on Embodiment 2, the positioning block 51 includes an arc-shaped block 511 and a rubber pad 512. The arc-shaped block 511 and the rubber pad 512 are fixedly connected. The arc-shaped block 511 is fixedly installed on the clamping member 5. The arc-shaped block 511 in the positioning block 51 is embedded in the positioning groove 41. The rubber pad 512 is in close contact with the surface of the mounting base 4, thus initially fixing the skirt of the cloth bag 3.
[0036] In addition, the trapezoidal block 52 has a groove 521, which is adapted to the positioning post 62. The trapezoidal block 52 has an inclined surface 522, and the angle between the inclined surface 522 and the pressing member 5 is 30 degrees. When the locking member 6 is rotated, the positioning post 62 contacts the inclined surface 522 of the trapezoidal block 52. As the locking member 6 rotates, the positioning post 62 presses down along the inclined surface 522, pushing the trapezoidal block 52 to move the pressing member 5 downward, so that the positioning block 51 further presses the skirt of the cloth bag 3.
[0037] Using the above technical solution, the clamping member 5 is slid down along the keel frame 2 so that the positioning block 51 is aligned with the positioning groove 41 of the mounting base 4. At this time, the skirt of the cloth bag 3 is clamped between the clamping member 5 and the mounting base 4. The arc-shaped block 511 in the positioning block 51 is embedded in the positioning groove 41, and the rubber pad 512 is in close contact with the surface of the mounting base 4, which initially fixes the skirt of the cloth bag 3 and forms a seal. In addition, the groove 521 on the trapezoidal block 52 engages with the positioning post 62 to prevent the locking member 6 from reversing.
[0038] The working principle of the above embodiments is as follows:
[0039] In use, the bag installation structure for the bag dust collector is to place the bag 3 on the outside of the keel frame 2, with the skirt of the bag 3 naturally hanging down to the end of the keel frame 2. Then, the assembled bag 3 and keel frame 2 are inserted into the interior of the mounting base 4. At this time, the skirt of the bag 3 hangs down inside the mounting base 4 and covers the positioning groove 41.
[0040] Slide the clamping part 5 down along the keel frame 2 so that the positioning block 51 is aligned with the positioning groove 41 of the mounting base 4. At this time, the skirt of the cloth bag 3 is clamped between the clamping part 5 and the mounting base 4. The arc-shaped block 511 in the positioning block 51 is embedded in the positioning groove 41, and the rubber pad 512 is in close contact with the surface of the mounting base 4, thus initially fixing the skirt of the cloth bag 3.
[0041] Rotating the locking component 6 causes its outer square post 61 to insert into the self-locking groove 42. Simultaneously, the positioning post 62 contacts the inclined surface 522 of the trapezoidal block 52. As the locking component 6 rotates, the positioning post 62 presses downward along the inclined surface 522, pushing the trapezoidal block 52 and causing the pressing component 5 to move downward, further pressing the skirt of the bag 3 with the positioning block 51. The groove 521 on the trapezoidal block 52 engages with the positioning post 62 to prevent the locking component 6 from reversing. The cooperation between the square post 61 and the self-locking groove 42 forms a mechanical self-lock, thereby completing the quick installation and preventing the locking component 6 from loosening under the impact of airflow, ensuring the long-term stability of the bag 3.
[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0043] 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 mounting structure for a bag filter dust collector, comprising a separator plate (1), characterized in that: A keel frame (2) is provided on the isolation plate (1), and a cloth bag (3) is provided on the keel frame (2). The partition plate (1) is fixedly installed with a mounting base (4) for placing the keel frame (2) and the cloth bag (3). The keel frame (2) is slidably installed with a pressing part (5) for pressing the skirt of the cloth bag (3). The keel frame (2) is rotatably installed with a locking part (6) for locking the pressing part (5). The mounting base (4) has a positioning groove (41) inside and a self-locking groove (42) on the mounting base (4). The clamping member (5) is fixedly installed with a positioning block (51) for clamping the skirt of the cloth bag (3), and the positioning block (51) is adapted to the positioning groove (41). The clamping member (5) is fixedly installed with a trapezoidal block (52). A square post (61) is fixedly installed on the outer peripheral wall of the locking member (6), and the square post (61) is adapted to the self-locking groove (42). A positioning post (62) for pressing the trapezoidal block (52) is fixedly installed on the outer peripheral wall of the locking member (6).
2. The bag mounting structure for a bag filter dust collector according to claim 1, characterized in that: The positioning block (51) includes an arc-shaped block (511) and a rubber pad (512). The arc-shaped block (511) is fixedly connected to the rubber pad (512), and the arc-shaped block (511) is fixedly installed on the clamping member (5).
3. The bag mounting structure for a bag filter dust collector according to claim 1, characterized in that: The trapezoidal block (52) has a groove (521) and the groove (521) is adapted to the positioning post (62). The trapezoidal block (52) has an inclined surface (522) and the angle between the inclined surface (522) and the clamping member (5) is thirty degrees.
4. The bag mounting structure for a bag filter dust collector according to claim 1, characterized in that: The central axes of the locking member (6), the clamping member (5) and the mounting base (4) all coincide with the central axis of the keel frame (2).
5. The bag mounting structure for a bag filter dust collector according to claim 1, characterized in that: The number of positioning slots (41) and self-locking slots (42) are both four, and they are symmetrical about the central axis of the mounting base (4).
6. The bag mounting structure for a bag filter dust collector according to claim 1, characterized in that: The number of positioning blocks (51) and trapezoidal blocks (52) are both four, and they are symmetrical about the central axis of the clamping member (5).
7. The bag mounting structure for a bag filter dust collector according to claim 1, characterized in that: The number of square posts (61) and positioning posts (62) are both four, and they are symmetrical about the central axis of the locking member (6).