A bag filter

Abstract

The application discloses a bag filter and relates to the field of filters, which comprises a shell and a filter bag, a fixing ring is fixedly connected to the top end of the filter bag, an installation assembly for installing the filter bag is arranged on the shell, and the installation assembly comprises an installation plate fixedly connected to the top end inside the shell. Through the cooperation of the cover plate, the compression ring and the spring and other structures, when in use, a plurality of filter bags are respectively passed through the installation holes, the fixing ring is located on the upper surface of the installation plate and is attached, then the cover plate covers the shell by swinging, the compression ring is close to the fixing ring, the compression ring is extruded against the spring after being in contact with the fixing ring, the fixing ring is abutted on the installation plate, then the cover plate is fixed on the shell through the locking assembly, the filter bag is installed and fixed, and when disassembling, the filter bag can be taken out only by opening the cover plate, so that the problem that the filter bag cannot be disassembled at the same time when the top cover is opened is avoided as much as possible, and the working efficiency is reduced.

Description

Technical Field

[0001] This application relates to the field of filters, and more particularly to a bag filter. Background Technology

[0002] Bag filters are a type of gas filtration and purification equipment. They typically consist of several filter bags grouped together, and several groups are combined into one unit. When dust-laden gas passes through the filter bags, the dust particles in the gas are trapped on the bags, while clean gas passes through the filter bags and is discharged from the exhaust pipe. Due to their high efficiency, bag filters are often used as the final stage dust removal equipment after cyclone separators.

[0003] The utility model patent with announcement number CN220405147U proposes an easy-to-replace bag filter, including an outer shell, an air inlet pipe fixed to the bottom end of the outer shell, a support leg fixed to the bottom end of the outer wall of the outer shell, an exhaust pipe fixed to the top of one side of the outer wall of the outer shell, a top cover detachably installed on the top of the outer shell by fasteners, a filter bag plate fixed to the inner wall of the outer shell, a connecting cylinder rotatably connected to the middle of the top of the filter bag plate, and a rotating rod fixed to the outer wall of the top of the connecting cylinder.

[0004] One of the aforementioned bag filters that is easy to replace requires opening the top cover first, then loosening the knob, and rotating the connecting cylinder to move the squeezing rod away from the filter bag before removing the filter bag. This makes it impossible to disassemble the filter bag while opening the top cover, resulting in reduced work efficiency. Utility Model Content

[0005] To address the aforementioned problems, this application provides a bag filter.

[0006] The bag filter provided in this application adopts the following technical solution:

[0007] A bag filter includes a housing and a filter bag. A retaining ring is fixedly connected to the top of the filter bag. The housing is provided with an installation assembly for mounting the filter bag. The installation assembly includes an installation plate fixedly connected to the top of the housing. The upper surface of the installation plate has multiple mounting holes. The filter bag is located below the mounting holes and the retaining ring is located above the installation plate. A cover plate is hinged to the top of the housing. Multiple clamping rings adapted to the retaining rings are provided on the lower surface of the cover plate. Multiple springs are fixedly connected between the clamping rings and the cover plate. A locking assembly is provided between the housing and the cover plate.

[0008] By adopting the above technical solution, during use, multiple filter bags are passed through the mounting holes respectively, so that the fixing ring is located on the upper surface of the mounting plate and fits against it. Then, by swinging the cover plate, the cover plate covers the housing, and at the same time, the clamping ring moves close to the fixing ring. After the clamping ring contacts the fixing ring, it compresses the spring, so that the fixing ring abuts against the mounting plate. Then, the locking assembly fixes the cover plate to the housing, thus installing and fixing the filter bags. When disassembling, only the cover plate needs to be opened to remove the filter bags, which avoids the problem of not being able to disassemble the filter bags while opening the top cover, thus reducing work efficiency.

[0009] Preferably, the locking assembly includes a first connecting block fixedly connected to the top of the side wall of the housing, and a second connecting block adapted to the first connecting block is fixedly connected to the side wall of the cover plate. The upper surface of the second connecting block is provided with a fixing bolt, and the screw end of the fixing bolt passes through the second connecting block and is threadedly connected to the first connecting block.

[0010] By adopting the above technical solution, when the cover plate covers the top of the shell, the second connecting block is brought close to the first connecting block. Then, by rotating the fixing bolt, the fixing bolt is threadedly connected to the first connecting block, which can fix the cover plate and prevent the cover plate from shaking.

[0011] Preferably, an annular sealing gasket is fixedly connected to the top of the housing, and the lower surface of the cover plate abuts against the annular sealing gasket.

[0012] By adopting the above technical solution, when the cover plate comes into contact with the housing, the cover plate squeezes the annular sealing gasket, which can improve the sealing performance between the cover plate and the housing.

[0013] Preferably, a threaded rod is fixedly connected to the upper surface of the cover plate, a fixed plate is sleeved on the threaded rod, and a plurality of limiting rods are fixedly connected to the lower surface of the fixed plate. The ends of the limiting rods away from the fixed plate all penetrate the cover plate and are located inside the spring. A nut is threadedly connected to the top end of the threaded rod.

[0014] By adopting the above technical solution, after the clamping ring abuts against the fixed ring, the fixed plate slides downward on the threaded rod, causing the limiting rod to move downward and abut against the clamping ring. Then, by rotating the nut, the nut abuts against the fixed plate. This can prevent the spring from contracting during use, which would cause the fixed ring to wobble, and improve the stability of the clamping ring.

[0015] Preferably, the upper surface of the clamping ring is fixedly connected to a limiting tube inside the spring, and the end of the limiting rod away from the fixed plate is slidably disposed inside the limiting tube.

[0016] By adopting the above technical solution, the limiting tube can prevent the spring from bending during the contraction process when the cover is closed and the clamping ring abuts against the fixing ring, and prevent the limiting rod from abutting against the spring when it moves downward, thus improving the stability of the spring.

[0017] Preferably, a plurality of bellows are fixedly connected to the upper surface of the clamping ring, and the bellows are respectively sleeved on the spring. The ends of the bellows away from the clamping ring are all fixedly connected to the cover plate.

[0018] By adopting the above technical solution, the bellows can protect the spring and prevent gas from leaking through the gap between the limit rod and the cover plate.

[0019] Preferably, a U-shaped frame is fixedly connected to the upper surface of the second connecting block, and a rotating rod is fixedly connected to the top of the fixing bolt. The end of the rotating rod away from the fixing bolt passes through the U-shaped frame and is fixedly connected to the limiting block.

[0020] By adopting the above technical solution, the rotating rod and the limiting block can prevent the fixing bolts from coming off the U-shaped frame and avoid the loss of the fixing bolts.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. This application utilizes the cooperative arrangement of structures such as a cover plate, a clamping ring, and a spring. During use, multiple filter bags are passed through the mounting holes, causing the fixing ring to be positioned and adhered to the upper surface of the mounting plate. Then, by swinging the cover plate, the cover plate covers the housing, while the clamping ring approaches the fixing ring. After the clamping ring contacts the fixing ring, it compresses the spring, causing the fixing ring to abut against the mounting plate. The cover plate is then fixed to the housing by a locking assembly, thus installing and securing the filter bags. During disassembly, only the cover plate needs to be opened to remove the filter bags, minimizing the problem of reduced work efficiency caused by the inability to disassemble the filter bags while opening the top cover.

[0023] 2. After the clamping ring abuts against the fixed ring, the limiting rod moves downward by sliding the fixed plate on the threaded rod, and the limiting rod abuts against the clamping ring. Then, by rotating the nut, the nut abuts against the fixed plate. This can prevent the spring from contracting during use, which would cause the fixed ring to wobble, and improve the stability of the clamping ring. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a bag filter according to an embodiment of this application;

[0025] Figure 2 This is a schematic diagram illustrating the internal structure of the housing, representing a key embodiment of this application.

[0026] Figure 3 The embodiments of this application mainly embody Figure 2 A schematic diagram of the enlarged structure of region A in the middle;

[0027] Figure 4 The embodiments of this application mainly embody Figure 1 A schematic diagram of the enlarged structure of region B in the middle.

[0028] Reference numerals in the attached drawings: 1. Shell; 2. Filter bag; 3. Fixing ring; 4. Mounting plate; 5. Mounting hole; 6. Cover plate; 7. Compression ring; 8. Spring; 9. First connecting block; 10. Second connecting block; 11. Fixing bolt; 12. Annular sealing gasket; 13. Threaded rod; 14. Fixing disc; 15. Limiting rod; 16. Nut; 17. Limiting tube; 18. Bellows; 19. U-shaped frame; 20. Rotating rod; 21. Limiting block. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0030] This application discloses a bag filter.

[0031] Reference Figure 1 , Figure 2 and Figure 3 A bag filter includes a housing 1 and a filter bag 2. A fixing ring 3 is fixedly connected to the top of the filter bag 2. The housing 1 is provided with an installation assembly for installing the filter bag 2. The installation assembly includes an installation plate 4, an installation hole 5, a cover plate 6, a clamping ring 7, and a spring 8.

[0032] Mounting plate 4 is fixedly connected to the top of the housing 1. An exhaust pipe is fixedly connected to the top of the side wall of housing 1 above mounting plate 4. An air inlet pipe is fixedly connected to the bottom of housing 1. Multiple mounting holes 5 are provided, all opened on the upper surface of mounting plate 4 and arranged in a ring array. Filter bag 2 is located below mounting hole 5 and fixing ring 3 is located above mounting plate 4. Fixing ring 3 is in contact with the upper surface of mounting plate 4. Cover plate 6 is hinged to the top of housing 1. Multiple clamping rings 7 are provided, all located on the lower surface of cover plate 6 and arranged in a ring array. The clamping rings 7 are located directly above the fixing rings 3. Multiple sets of springs 8 are provided, each set of springs 8 has multiple springs, and each set of springs 8 is fixedly connected between clamping ring 7 and cover plate 6. Locking components are provided on housing 1 and cover plate 6.

[0033] Reference Figure 1 and Figure 4The locking assembly includes a first connecting block 9 fixedly connected to the top of the side wall of the housing 1, and a second connecting block 10 adapted to the first connecting block 9 fixedly connected to the side wall of the cover plate 6. The upper surface of the second connecting block 10 is provided with a fixing bolt 11, the screw end of the fixing bolt 11 passes through the second connecting block 10 and is threadedly connected to the first connecting block 9. When the cover plate 6 covers the top of the housing 1, the second connecting block 10 is brought close to the first connecting block 9, and then the fixing bolt 11 is rotated to thread the fixing bolt 11 to the first connecting block 9, which can fix the cover plate 6 and prevent the cover plate 6 from shaking.

[0034] Reference Figure 1 and Figure 4 An annular sealing gasket 12 is fixedly connected to the top of the housing 1. The lower surface of the cover plate 6 abuts against the annular sealing gasket 12. When the cover plate 6 contacts the housing 1, the cover plate 6 squeezes the annular sealing gasket 12, which can improve the sealing between the cover plate 6 and the housing 1.

[0035] Reference Figure 1 , Figure 2 and Figure 3 A threaded rod 13 is fixedly connected to the upper surface of the cover plate 6. A fixed plate 14 is sleeved on the threaded rod 13. Multiple limiting rods 15 are fixedly connected to the lower surface of the fixed plate 14. The ends of the limiting rods 15 away from the fixed plate 14 all pass through the cover plate 6 and are located inside the spring 8. A nut 16 is threadedly connected to the top of the threaded rod 13. After the clamping ring 7 abuts against the fixed ring 3, the limiting rods 15 are moved downward by sliding the fixed plate 14 on the threaded rod 13, so that the limiting rods 15 abut against the clamping ring 7. Then, by rotating the nut 16, the nut 16 abuts against the fixed plate 14. This can prevent the spring 8 from contracting during use, which would cause the fixed ring 3 to shake, and improve the stability of the clamping ring 7.

[0036] Reference Figure 2 and Figure 3 The upper surface of the clamping ring 7 is fixedly connected to the limiting tube 17 inside the spring 8. The end of the limiting rod 15 away from the fixed plate 14 is slidably set inside the limiting tube 17. The limiting tube 17 can prevent the spring 8 from bending during the contraction process when the cover plate 6 is closed and the clamping ring 7 abuts against the fixed ring 3, and prevent the limiting rod 15 from abutting against the spring 8 when it moves downward, thus improving the stability of the spring 8.

[0037] Reference Figure 2 and Figure 3 Multiple bellows 18 are fixedly connected to the upper surface of the clamping ring 7. The bellows 18 are respectively sleeved on the spring 8. The end of the bellows 18 away from the clamping ring 7 is fixedly connected to the cover plate 6. The bellows 18 can protect the spring 8 and prevent gas from leaking through the gap between the limit rod 15 and the cover plate 6.

[0038] Reference Figure 4 A U-shaped frame 19 is fixedly connected to the upper surface of the second connecting block 10. A rotating rod 20 is fixedly connected to the top of the fixing bolt 11. The end of the rotating rod 20 away from the fixing bolt 11 passes through the U-shaped frame 19 and is fixedly connected to the limiting block 21. The rotating rod 20 and the limiting block 21 can prevent the fixing bolt 11 from falling off the U-shaped frame 19 and avoid the fixing bolt 11 from being lost.

[0039] The implementation principle of a bag filter according to an embodiment of this application is as follows: In use, multiple filter bags 2 are passed through the mounting holes 5 respectively, so that the fixing ring 3 is located on the upper surface of the mounting plate 4 and fits against it. Then, by swinging the cover plate 6, the cover plate 6 covers the housing 1, and at the same time, the clamping ring 7 moves closer to the fixing ring 3. After the clamping ring 7 contacts the fixing ring 3, it compresses the spring 8, so that the fixing ring 3 abuts against the mounting plate 4. Then, by rotating the fixing bolt 11, the fixing bolt 11 is threadedly connected to the first connecting block 9, thus fixing the cover plate 6 and the filter bags. 2. Install and fix the filter bag 2. Then, slide the fixing plate 14 downward on the threaded rod 13 to move the limiting rod 15 downward and make the limiting rod 15 abut against the clamping ring 7. Then rotate the nut 16 to make the nut 16 abut against the fixing plate 14. This can prevent the spring 8 from contracting during use, which would cause the fixing ring 3 to shake and improve the stability of the clamping ring 7. When disassembling, you only need to open the cover plate 6 to take out the filter bag 2. This avoids the problem of not being able to disassemble the filter bag 2 while opening the top cover, which would reduce the efficiency of work.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bag filter, comprising a housing (1) and a filter bag (2), wherein a fixing ring (3) is fixedly connected to the top end of the filter bag (2), and the housing (1) is provided with an mounting assembly for mounting the filter bag (2), characterized in that: The mounting assembly includes a mounting plate (4) fixedly connected to the top of the housing (1). The mounting plate (4) has multiple mounting holes (5) on its upper surface. The filter bag (2) is located below the mounting holes (5) and the fixing ring (3) is located above the mounting plate (4). A cover plate (6) is hinged to the top of the housing (1). Multiple clamping rings (7) adapted to the fixing ring (3) are provided on the lower surface of the cover plate (6). Multiple springs (8) are fixedly connected between the clamping rings (7) and the cover plate (6). Locking assemblies are provided on the housing (1) and the cover plate (6).

2. A bag filter according to claim 1, characterized in that: The locking assembly includes a first connecting block (9) fixedly connected to the top of the side wall of the housing (1), and a second connecting block (10) adapted to the first connecting block (9) is fixedly connected to the side wall of the cover plate (6). A fixing bolt (11) is provided on the upper surface of the second connecting block (10), and the screw end of the fixing bolt (11) passes through the second connecting block (10) and is threadedly connected to the first connecting block (9).

3. A bag filter according to claim 2, characterized in that: The top of the housing (1) is fixedly connected to an annular sealing gasket (12), and the lower surface of the cover plate (6) abuts against the annular sealing gasket (12).

4. A bag filter according to claim 3, characterized in that: A threaded rod (13) is fixedly connected to the upper surface of the cover plate (6). A fixed plate (14) is sleeved on the threaded rod (13). A plurality of limiting rods (15) are fixedly connected to the lower surface of the fixed plate (14). The end of the limiting rod (15) away from the fixed plate (14) passes through the cover plate (6) and is located inside the spring (8). A nut (16) is threadedly connected to the top of the threaded rod (13).

5. A bag filter according to claim 4, characterized in that: The upper surface of the clamping ring (7) is fixedly connected to the limiting tube (17) inside the spring (8), and the end of the limiting rod (15) away from the fixed plate (14) is slidably disposed inside the limiting tube (17).

6. A bag filter according to claim 5, characterized in that: Multiple bellows (18) are fixedly connected to the upper surface of the clamping ring (7). The bellows (18) are respectively sleeved on the spring (8). The end of the bellows (18) away from the clamping ring (7) is fixedly connected to the cover plate (6).

7. A bag filter according to claim 6, characterized in that: A U-shaped frame (19) is fixedly connected to the upper surface of the second connecting block (10), and a rotating rod (20) is fixedly connected to the top of the fixing bolt (11). The end of the rotating rod (20) away from the fixing bolt (11) passes through the U-shaped frame (19) and is fixedly connected to the limiting block (21).

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