A metal bag filter
The combination structure of pressure plate, horizontal plate and positioning block solves the problem of slow installation speed of metal filter bag dust collector, realizes rapid installation and stable fixation of filter bags, and improves installation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI GAOYI STEEL CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-06-16
AI Technical Summary
Existing metal filter bag dust collectors are slow to install, and the fixing nuts are prone to falling off, affecting the fixing effect of the filter bags.
The filter bag is quickly installed and fixed by using a combination of pressure plate, horizontal plate and positioning block, and spring and threaded connection, reducing the reliance on fixing nuts.
It enables rapid installation and stable fixation of filter bags, reduces the use of tools, and improves installation efficiency and fixation effect.
Smart Images

Figure CN224358183U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of metal filter bag dust collectors, specifically a metal filter bag dust collector. Background Technology
[0002] Metal filter bag dust collectors are a type of dust removal device, mainly used to intercept dust in dusty gases. Their core component is a filter bag woven from metal fibers, which has the advantages of high strength, high temperature resistance, and corrosion resistance of metal materials.
[0003] In existing products, metal filter bags are installed on the outside of the cage. Installation involves first inserting the filter bag into the mounting plate inside the dust collector housing. After installation, a pressure plate is used to tighten the cage, and then numerous fixing nuts are used to secure the pressure plate. The installation process involves many pressure plates and fixing nuts, requiring manual positioning of the fixing nuts each time. However, due to the small positioning holes of the fixing nuts and the need for horizontal placement during installation, the fixing nuts can easily fall into the dust collector and filter bag interior. This slows down the filter bag installation process, and the large number of fixing nuts also increases the risk of some pressure plates being left unsecured, affecting the filter bag's fixation effect.
[0004] Therefore, there is an urgent need for a metal filter bag dust collector to solve the above problems. Summary of the Invention
[0005] The purpose of this invention is to provide a metal filter bag dust collector to solve the problem of slow filter bag installation speed mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a metal filter bag dust collector, comprising a housing, a mounting plate and a filter bag body, wherein a fixing box is fixedly installed on the inner wall of the housing, a connecting rod is sleeved inside the fixing box, a spring is sleeved on the outside of the connecting rod, and a positioning block is rotatably connected to one end of the connecting rod;
[0007] A positioning rod is fixedly installed on the outer surface of the mounting plate, a pressure plate is sleeved on the outer surface of the positioning rod, a horizontal plate is slidably connected to the upper surface of the pressure plate, and fixing blocks are fixedly installed at both ends of the horizontal plate.
[0008] A threaded rod is fitted inside the horizontal plate, and a positioning ring is fixedly installed on the outer surface of the threaded rod. A fixing cylinder is fixedly installed inside the mounting plate.
[0009] Furthermore, one end of the positioning block is a wedge-shaped structure with the inclined surface facing upwards, one end of the spring is fixedly installed to the outer surface of the positioning block, the other end of the spring is fixedly installed to the inner wall of the fixing box, and the outer surface of the positioning block is slidably connected to the inside of the fixing block.
[0010] Furthermore, a fixing rod with an external thread is fixedly installed inside the connecting rod near the positioning block. The fixing rod is connected to the internal thread of the fixing box through the external thread. The positioning blocks are symmetrically arranged on both sides of the fixing block.
[0011] Furthermore, the pressure plate has a cross structure and a connecting hole is provided inside. A plug rod is fixedly installed on the lower surface of the horizontal plate, and the outer surface of the plug rod is slidably connected to the inside of the connecting hole.
[0012] Furthermore, a second insertion rod is fixedly installed on the lower surface of the horizontal plate, and a second connection hole is opened inside the mounting plate. The outer surface of the second insertion rod is slidably connected to the inside of the second connection hole.
[0013] Furthermore, the outer surface of the threaded rod is connected to the internal thread of the fixed cylinder, and the lower surface of the positioning ring is in contact with the upper surface of the horizontal plate.
[0014] Furthermore, the upper surface of the adjacent filter bag body is in contact with the lower surface of the pressure plate, and a guardrail assembly is installed on the outside of the box.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] This utility model discloses a metal filter bag dust collector. Through the cooperation of a pressure plate, a horizontal plate, and a positioning block, the filter bag body is fitted inside the mounting plate during installation. Then, the pressure plate is installed outside the fixing rod. At this time, the pressure plate is fixed by pressing the horizontal plate. This allows for quick installation of the filter bag body without the need for fixing nuts or other easily falling parts. When fixing the horizontal plate, the positioning block can provide auxiliary fixation at both ends of the horizontal plate, increasing the stability of the horizontal plate when it is fixed in a vertical position. It eliminates the need to fix each group of filter bags individually, realizing the function of quick installation of the filter bag body, which is convenient for workers and reduces the need for tools.
[0017] This utility model discloses a metal filter bag dust collector. By setting up components such as a fixing rod and an insert rod, the fixing rod can fix the position of the connecting rod. When replacing the damaged filter bag body, firstly, the connecting rod is pulled to move outward of the fixing box. Then, the connecting rod is rotated to make the fixing rod connect with the internal thread of the fixing box. At this time, the fixing rod can fix the position of the positioning block, which can facilitate the removal of the horizontal plate by the staff. When the horizontal plate is fixed, the insert rod 1 and the insert rod 2 will enter the interior of the connecting hole 1 and the connecting hole 2 respectively. At this time, the pressure plate is subject to the auxiliary limit of the insert rod 1 and the insert rod 2, making it less likely to rotate horizontally or tilt vertically, thus increasing the stability of the pressure plate when it is fixed. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the internal structure of the box of this utility model;
[0020] Figure 3 This is a schematic diagram of the pressure plate component of this utility model;
[0021] Figure 4 This is a schematic diagram of the structure of this utility model;
[0022] Figure 5 This is a schematic diagram of the horizontal plate component structure of this utility model;
[0023] Figure 6 This is a schematic diagram of the insertion rod component of this utility model.
[0024] In the diagram: 1. Box body; 2. Mounting plate; 3. Filter bag body; 4. Fixing box; 5. Connecting rod; 6. Spring; 7. Positioning block; 8. Positioning rod; 9. Pressure plate; 10. Horizontal plate; 11. Fixing block; 12. Threaded rod; 13. Positioning ring; 14. Fixing cylinder; 15. Fixing rod; 16. Connecting hole one; 17. Insert rod one; 18. Insert rod two; 19. Connecting hole two; 20. Guardrail assembly. Detailed Implementation
[0025] 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.
[0026] Please see Figure 1-6 The present invention provides a metal filter bag dust collector, including a housing 1, a mounting plate 2, and a filter bag body 3. A guardrail assembly 20 is installed on the outside of the housing 1. The guardrail assembly 20 is located at the upper part of the housing 1 to facilitate auxiliary support by the staff. The mounting plate 2 is fixedly installed inside the mounting plate 2. Multiple sets of through holes are opened inside the mounting plate 2 for the filter bag body 3 to be installed. During installation, the cage containing the filter bag is simply put into the through hole.
[0027] A fixed box 4 is fixedly installed on the inner wall of the housing 1. A connecting rod 5 is sleeved inside the fixed box 4. A spring 6 is sleeved on the outside of the connecting rod 5. A positioning block 7 is rotatably connected to one end of the connecting rod 5. The fixed box 4 is made of high-temperature resistant alloy. One end of the positioning block 7 has a wedge-shaped structure with the inclined surface facing upward. One end of the spring 6 is fixedly installed on the outer surface of the positioning block 7, and the other end of the spring 6 is fixedly installed on the inner wall of the fixed box 4. The spring 6 can push the positioning block 7 to move outward from the fixed box 4. A pull plate is installed at one end of the connecting rod 5 to facilitate the movement of the positioning block 7. Since the inclined surface of the positioning block 7 is upward, when the upper horizontal plate 10 moves downward, it can squeeze the positioning block 7 to move. At this time, the positioning block 7 first moves into the fixed box 4. When the through hole inside the fixed block 11 moves to the position of the positioning block 7, the spring 6 pushes the positioning block 7 into the interior of the fixed block 11. At this time, the upward movement of the fixed block 11 is restricted.
[0028] A fixing rod 15 with external threads is fixedly installed inside the connecting rod 5 near the positioning block 7. The fixing rod 15 is connected to the internal thread of the fixing box 4 through the external thread. The positioning blocks 7 are symmetrically arranged on both sides of the fixing block 11. The connecting rod 5 can rotate outside the positioning block 7. When the connecting rod 5 is pulled to move outside the fixing box 4, the fixing rod 15 moves to the position of the fixing box 4. At this time, rotating the connecting rod 5 and the fixing rod 15 can connect to the opposite side of the fixing box 4 through the thread. At this time, the fixing rod 15 can fix the position of the connecting rod 5. At this time, the positioning block 7 is fixed inside the fixing box 4, and the spring 6 will not push the positioning block 7 to move, which makes it easy to release the fixing effect of the positioning block 7.
[0029] A positioning rod 8 is fixedly installed on the outer surface of the mounting plate 2. A pressure plate 9 is sleeved on the outer surface of the positioning rod 8. The upper surface of the adjacent filter bag body 3 is in contact with the lower surface of the pressure plate 9. After the filter bag body 3 is installed, the pressure plate 9 is installed outside the positioning rod 8. At this time, the pressure plate 9 can limit the upward movement of the filter bag body 3.
[0030] A horizontal plate 10 is slidably connected to the upper surface of the pressure plate 9. Fixing blocks 11 are fixedly installed at both ends of the horizontal plate 10. The outer surface of the positioning block 7 is slidably connected to the interior of the fixing block 11. The pressure plate 9 has a cross structure and a connecting hole 16 is opened inside. A first insertion rod 17 is fixedly installed on the lower surface of the horizontal plate 10. The outer surface of the first insertion rod 17 is slidably connected to the interior of the first connecting hole 16. A second insertion rod 18 is fixedly installed on the lower surface of the horizontal plate 10. A second connecting hole 19 is opened inside the mounting plate 2. The outer surface of the second insertion rod 18 is slidably connected to the interior of the second connecting hole 19. The horizontal plate 10 can limit the upper part of the pressure plate 9. At this time, the horizontal plate 10 drives the first insertion rod 17 and the second insertion rod 18 to move. The first insertion rod 17 enters the interior of the first connecting hole 16, and the second insertion rod 18 enters the interior of the second connecting hole 19. The pressure plate 9 is limited by the first insertion rod 17 and cannot move vertically. It can also limit the horizontal rotation of the pressure plate 9, which increases the stability of the pressure plate 9 when it is placed horizontally.
[0031] A threaded rod 12 is fitted inside the horizontal plate 10, and a positioning ring 13 is fixedly installed on the outer surface of the threaded rod 12. A fixing cylinder 14 is fixedly installed inside the mounting plate 2. The outer surface of the threaded rod 12 is threadedly connected to the inside of the fixing cylinder 14. The lower surface of the positioning ring 13 is in contact with the upper surface of the horizontal plate 10. The fixing cylinder 14 is pre-welded inside the mounting plate 2 and located between two sets of through holes inside the mounting plate 2. When fixing the pressure plate 9, the horizontal plate 10 is placed first, and then the threaded rod 12 is connected to the inside of the fixing cylinder 14 and gradually tightened. At this time, the threaded rod 12 can press down on the horizontal plate 10 to fix the horizontal plate 10 through the positioning ring 13. During the process of fixing the horizontal plate 10, the positioning block 7 gradually enters the inside of the fixing block 11. When the positioning block 7 is completely inside the fixing block 11, the horizontal plate 10 is completely fixed, realizing the rapid fixing of the filter bag body 3 and reducing the use of fixing nuts.
[0032] Working principle: During installation, first place the filter bag body 3 into the through hole inside the mounting plate 2, then put the pressure plate 9 into the outside of the positioning rod 8 and press the edge of the pressure plate 9 against the outside of the filter bag body 3. Connect the threaded rod 12 to the horizontal plate 10 and control the threaded rod 12 to tighten inside the fixed cylinder 14. At this time, the horizontal plate 10 will press the pressure plate 9. During the process of the horizontal plate 10 pressing down, the positioning block 7 enters the interior of the fixed block 11 under the push of the spring 6, realizing the rapid fixation of the filter bag body 3.
[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A metal filter bag dust collector, comprising a housing (1), a mounting plate (2), and a filter bag body (3), characterized in that: A fixing box (4) is fixedly installed on the inner wall of the box (1). A connecting rod (5) is sleeved inside the fixing box (4). A spring (6) is sleeved on the outside of the connecting rod (5). A positioning block (7) is rotatably connected to one end of the connecting rod (5). A positioning rod (8) is fixedly installed on the outer surface of the mounting plate (2). A pressure plate (9) is sleeved on the outer surface of the positioning rod (8). A horizontal plate (10) is slidably connected to the upper surface of the pressure plate (9). Fixing blocks (11) are fixedly installed at both ends of the horizontal plate (10). The inside of the horizontal plate (10) is fitted with a threaded rod (12), and a positioning ring (13) is fixedly installed on the outer surface of the threaded rod (12). A fixing cylinder (14) is fixedly installed inside the mounting plate (2).
2. The metal filter bag dust collector according to claim 1, characterized in that: One end of the positioning block (7) is a wedge-shaped structure with the inclined surface facing upwards. One end of the spring (6) is fixedly installed on the outer surface of the positioning block (7), and the other end of the spring (6) is fixedly installed on the inner wall of the fixing box (4). The outer surface of the positioning block (7) is slidably connected to the inside of the fixing block (11).
3. A metal filter bag dust collector according to claim 1, characterized in that: The connecting rod (5) is fixedly installed with a fixing rod (15) near the positioning block (7) and has an external thread. The fixing rod (15) is connected to the internal thread of the fixing box (4) through the external thread. The positioning block (7) is symmetrically arranged on both sides of the fixing block (11).
4. A metal filter bag dust collector according to claim 1, characterized in that: The pressure plate (9) has a cross structure and a connecting hole (16) is provided inside. A plug rod (17) is fixedly installed on the lower surface of the horizontal plate (10). The outer surface of the plug rod (17) is slidably connected to the inside of the connecting hole (16).
5. A metal filter bag dust collector according to claim 1, characterized in that: The lower surface of the horizontal plate (10) is fixedly installed with a second insertion rod (18), and the interior of the mounting plate (2) is provided with a second connection hole (19). The outer surface of the second insertion rod (18) is slidably connected to the interior of the second connection hole (19).
6. A metal filter bag dust collector according to claim 1, characterized in that: The outer surface of the threaded rod (12) is connected to the inner thread of the fixed cylinder (14), and the lower surface of the positioning ring (13) is in contact with the upper surface of the horizontal plate (10).
7. A metal filter bag dust collector according to claim 1, characterized in that: The upper surface of the adjacent filter bag body (3) is in contact with the lower surface of the pressure plate (9), and a guardrail assembly (20) is installed on the outside of the box (1).