Dust removal filter bag with multi-layer structure

Abstract

The utility model discloses a dust removal filter bag with a multilayer structure, which relates to the technical field of dust removal filter bags and comprises a protective cylinder, a through hole is arranged at the bottom end of the protective cylinder, a connecting flange is movably connected to the upper end of the protective cylinder, a connecting ring is fixedly connected to the bottom end of the connecting flange, internal threads are arranged on the inner wall of the connecting ring, and external threads are arranged on the outer side wall of the protective cylinder. The upper end of the protective cylinder is provided with a mounting groove, a mounting frame is inserted into the mounting groove, the bottom end of the mounting frame is fixedly connected with a dust removal filter bag body, the bottom end of the mounting frame is symmetrically and fixedly connected with connecting blocks, and fixing assemblies are mounted in the connecting blocks. By the adoption of the structure, when the filter bag needs to be replaced, a technician can rapidly complete dismounting and mounting work, the maintenance time is greatly shortened, and due to the fact that the replacement process is rapid, the equipment shutdown time caused by replacement of the filter bag is shortened, and therefore the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust removal filter bags, and particularly relates to a dust removal filter bag with a multi-layer structure. Background Art

[0002] Dust filter bags are highly efficient dust removal filter media, widely used in industries such as steel, petrochemicals, cement, chemicals, and pharmaceuticals, as well as in environmental sectors such as construction, mining, and food processing. Dust filter bags filter and capture solid particles and pollutants in the air through the principles of sieving and inertial sedimentation. When passing through the filter bag, airborne particles are unable to pass due to their larger pore size and are trapped on the bag's surface. Simultaneously, the inertia of the air flow causes the particles to settle on the bag's surface, forming a filter layer that captures and purifies airborne pollutants.

[0003] Announcement No. "CN218421608U" discloses a multi-layer dust filter bag, comprising a top plate, the bottom of which is fixedly connected to a filter bag body, the bottom of which is fixedly connected to a baffle, the bottom of which is fixedly connected to a bottom plate, a cleaning mechanism being provided on the outside of the filter bag body, the cleaning mechanism comprising a motor fixedly connected to the top of the top plate, an output shaft of the motor fixedly connected to a reciprocating screw having one end passing through and extending to the bottom of the bottom plate, and a sliding rod being fixedly connected to the bottom of the top plate. The dust filter bag of this multi-layer structure is provided with a cleaning mechanism, and when the motor drives the reciprocating screw to rotate, the soft brush installed on the inner wall of the movable ring is driven to reciprocate on the outside of the filter bag body, thereby brushing off the dust on the outside of the filter bag body with the bristles of the soft brush, thereby cleaning the dust on the outer surface of the filter bag body, and saving time and effort during cleaning, reducing the workload of the staff and improving the cleaning efficiency.

[0004] Although the above-mentioned utility model is provided with a cleaning mechanism, when the motor drives the reciprocating screw to rotate, the soft brush installed on the inner wall of the movable ring is driven to reciprocate on the outside of the filter bag body, so that the dust on the outside of the filter bag body is brushed off by the bristles of the soft brush, and the dust on the outer surface of the filter bag body can be cleaned. In addition, the cleaning process is time-saving and labor-saving, which reduces the workload of the staff and improves the cleaning efficiency. However, when the dust filter bag is damaged, it is inconvenient to disassemble and assemble the filter bag. Due to the inconvenience of disassembly and assembly, the replacement and maintenance of the dust filter bag becomes more complicated and time-consuming, which not only increases labor costs and downtime, but also causes damage to the filter bag or loose installation due to improper operation, thereby affecting the dust removal effect and equipment performance. Moreover, if the dust filter bag cannot be disassembled and assembled in a timely and convenient manner, the filter bag cannot be replaced in time when it is needed, thereby increasing the risk of filter bag clogging. Filter bag clogging will lead to a decrease in dust removal efficiency and even affect the normal operation of the entire dust removal system. Utility Model Content

[0005] In response to the problems mentioned in the background technology, the purpose of the present invention is to provide a dust filter bag with a multi-layer structure to solve the problem that when the dust filter bag is damaged, it is inconvenient to disassemble and assemble the filter bag. Due to the inconvenience of disassembly and assembly, the replacement and maintenance of the dust filter bag becomes more complicated and time-consuming, which not only increases labor costs and downtime, but also may cause the filter bag to be damaged or not installed tightly due to improper operation, thereby affecting the dust removal effect and equipment performance.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A dust filter bag with a multi-layer structure includes a protective tube, a through hole is formed at the bottom end of the protective tube, a connecting flange is movably connected to the upper end of the protective tube, a mounting groove is formed at the upper end of the protective tube, a mounting frame is inserted into the mounting groove, the bottom end of the mounting frame is fixedly connected to the dust filter bag body, the bottom end of the mounting frame is symmetrically fixedly connected to a connecting block, and a fixing component is installed inside the connecting block;

[0008] The locking block is slidably connected to the locking plate, and the locking plate is slidingly connected to the locking plate.

[0009] As an optimal technical solution, a connecting ring is fixedly connected to the bottom end of the connecting flange, an internal thread is provided on the inner wall of the connecting ring, and an external thread is provided on the outer wall of the protective tube. The internal thread and the external thread are threadedly connected. Without complicated tools or professional skills, the operator can easily complete the disassembly and assembly between the protective tube and the connecting flange, reducing the difficulty and cost of maintenance.

[0010] As an optimal technical solution, a sealing gasket is fixedly connected to the bottom end of the connecting flange. The sealing gasket fits into the upper end of the mounting frame and can tightly fill the tiny gap between the protective tube and the connecting flange, effectively preventing gas, dust and other media from leaking out of the gap, and helping to maintain the normal operation and dust removal effect of the dust removal system.

[0011] As an optimal technical solution, the dust filter bag body includes a high-temperature resistant layer, an antistatic layer, a corrosion-resistant layer and a wear-resistant layer. The antistatic layer is fixedly connected to the outside of the high-temperature resistant layer, the corrosion-resistant layer is fixedly connected to the outside of the antistatic layer, and the wear-resistant layer is fixedly connected to the outside of the corrosion-resistant layer. The high-temperature resistant layer is made of a glass fiber layer, the antistatic layer is made of an antistatic polyester needle-punched felt layer, the corrosion-resistant layer is made of a fluoromethan fiber layer, and the wear-resistant layer is made of a metas fiber layer. The high-temperature resistant layer can significantly improve the high-temperature resistance of the filter bag body, ensuring that the filter bag can still maintain normal use in a high-temperature environment and is not damaged by high temperature or affects the filtering effect. The antistatic layer can reduce the static electricity generated and attached to the filter bag body during use, prevent sparks caused by static electricity accumulation, and thus prevent the occurrence of safety accidents such as dust explosions. The corrosion-resistant layer can enhance the acid and alkali resistance of the filter bag body and improve its service life in a corrosive environment. The wear-resistant layer can significantly improve the wear resistance of the filter bag body, reduce the wear caused by particulate scouring and friction, and thus extend the service life of the filter bag.

[0012] In summary, the present invention has the following beneficial effects:

[0013] In the present invention, the protective cylinder is rotated so that the external thread on the outside of the protective cylinder is threadedly connected with the internal thread inside the connecting ring, the protective cylinder is removed from the bottom end of the connecting flange, and then the unlocking block is pushed to make the unlocking block slide inside the locking groove. The unlocking block pushes the locking block, so that the locking block drives the movable plate to press against the reset spring, the reset spring is compressed, and the locking block retracts into the cavity. The locking block and the locking groove are finally engaged, and then the installation frame is pulled outward to end the insertion of the installation frame and the installation groove. The dust filter bag body is taken out from the inside of the protective cylinder, and the reverse operation can complete the installation of the dust filter bag body. When the filter bag needs to be replaced, the technicians can quickly complete the disassembly and installation work, which greatly shortens the maintenance time. Since the replacement process is fast, the equipment downtime caused by replacing the filter bag is reduced, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the connecting flange of the utility model;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the protective tube of the utility model;

[0017] Figure 4 This is a schematic diagram of the three-dimensional structure of the dust filter bag body of the utility model;

[0018] Figure 5This is a schematic diagram of the cross-sectional three-dimensional structure of the fixing component of the utility model;

[0019] Figure 6 It is a schematic diagram of the cross-sectional three-dimensional structure of the dust removal filter bag body of the present invention.

[0020] Figure markings: 1. Protective cylinder; 2. Through hole; 3. Connecting flange; 4. Connecting ring; 5. Internal thread; 6. External thread; 7. Sealing gasket; 8. Mounting groove; 9. Mounting frame; 10. Dust filter bag body; 101. High temperature resistant layer; 102. Antistatic layer; 103. Corrosion resistant layer; 104. Wear-resistant layer; 11. Connecting block; 12. Connecting groove; 13. Fixed assembly; 131. Cavity; 132. Reset spring; 133. Movable plate; 134. Locking block; 14. Locking groove; 15. Unlocking block; 16. Limit block; 17. Limit groove. DETAILED DESCRIPTION

[0021] Example

[0022] refer to Figures 1 to 6 The dust filter bag with a multi-layer structure described in this embodiment includes a protective tube 1, a through hole 2 is opened at the bottom end of the protective tube 1, a connecting flange 3 is movably connected to the upper end of the protective tube 1, a mounting groove 8 is opened at the upper end of the protective tube 1, a mounting frame 9 is inserted into the mounting groove 8, a dust filter bag body 10 is fixedly connected to the bottom end of the mounting frame 9, a connecting block 11 is symmetrically fixedly connected to the bottom end of the mounting frame 9, and a fixing component 13 is installed inside the connecting block 11;

[0023] The fixing assembly 13 includes a cavity 131, a return spring 132, a movable plate 133 and a locking block 134. A cavity 131 is provided inside the connecting block 11. A return spring 132 is symmetrically fixedly connected to one end of the cavity 131. The other end of the return spring 132 is fixedly connected to the movable plate 133. The movable plate 133 is slidingly connected to the inside of the cavity 131. The end of the movable plate 133 away from the return spring 132 is fixedly connected to the locking block 134. The end of the locking block 134 away from the movable plate 133 extends out of the side end of the connecting block 11. The upper end of the locking block 134 is set as an inclined surface. The bottom end of the mounting frame 9 is provided with a connecting groove 12. The connecting groove 12 and the connecting block 11 are plugged in. A locking groove 14 is provided at one end inside the connecting groove 12. The locking The other end of the tightening groove 14 passes through the mounting frame 9, and the locking groove 14 is snap-connected with the locking block 134. The dust filter bag body 10 is placed inside the protective tube 1, so that the mounting frame 9 is inserted into the mounting groove 8, and the connecting block 11 is inserted into the connecting groove 12. During the insertion process, the extrusion force exerts pressure on the inclined surface of the locking block 134, so that the locking block 134 drives the movable plate 133 to press against the reset spring 132. The reset spring 132 is compressed, and the locking block 134 retracts into the cavity 131. When the locking block 134 moves to the locking groove 14, the reset spring 132 is reset, and the movable plate 133 rebounds to drive the locking block 134 to pop out. The locking block 134 is snap-connected with the locking groove 14 to complete the installation of the dust filter bag body 10.

[0024] refer to Figure 5 The locking groove 14 is slidably connected with an unlocking block 15, and the locking block 134 extends toward the inside of the mounting frame 9 away from one end of the locking block 134. The two ends of the locking block 134 are symmetrically fixedly connected to the limiting blocks 16, and the locking groove 14 is symmetrically provided with a limiting groove 17. The limiting groove 17 is slidably connected to the limiting block 16, pushing the unlocking block 15 so that the unlocking block 15 slides inside the locking groove 14, and the unlocking block 15 pushes the locking block 134, so that the locking block 134 drives the moving plate 133 to press against the return spring 132, and the return spring 132 is compressed. At the same time, the locking block 134 retracts into the cavity 131, and the locking block 134 ends the engagement with the locking groove 14, and then the mounting frame 9 is pulled outward so that the mounting frame 9 and the mounting groove 8 are completed. The dust filter bag body 10 is taken out from the inside of the protective cylinder 1, and the disassembly of the dust filter bag body 10 is completed.

[0025] refer to Figures 2 to 3 The bottom end of the connecting flange 3 is fixedly connected to a connecting ring 4, the inner wall of the connecting ring 4 is provided with an internal thread 5, and the outer wall of the protective tube 1 is provided with an external thread 6. The internal thread 5 and the external thread 6 are threadedly connected. Rotate the protective tube 1 so that the external thread 6 on the outside of the protective tube 1 and the internal thread 5 inside the connecting ring 4 are threadedly connected. Remove the protective tube 1 from the bottom end of the connecting flange 3 to complete the disassembly of the protective tube 1.

[0026] refer to Figure 2A sealing gasket 7 is fixedly connected to the bottom end of the connecting flange 3, and the sealing gasket 7 fits in with the upper end of the mounting frame 9. The sealing gasket 7 can prevent media such as gas, dust, etc. from leaking out of the gap between the protective tube 1 and the connecting flange 3.

[0027] refer to Figure 6 The dust filter bag body 10 includes a high temperature resistant layer 101, an antistatic layer 102, a corrosion resistant layer 103 and a wear resistant layer 104. The antistatic layer 102 is fixedly connected to the outside of the high temperature resistant layer 101, the corrosion resistant layer 103 is fixedly connected to the outside of the antistatic layer 102, and the wear resistant layer 104 is fixedly connected to the outside of the corrosion resistant layer 103. The high temperature resistant layer 101 is made of a glass fiber layer, the antistatic layer 102 is made of an antistatic polyester needle-punched felt layer, the corrosion resistant layer 103 is made of a fluoromethacrylic fiber layer, and the wear resistant layer 104 is made of a methylmethacrylic fiber layer. By setting the high temperature resistant layer 101, the high temperature resistance of the filter bag body can be significantly improved. It can ensure that the filter bag can maintain normal use status in a high temperature environment and will not be damaged by high temperature or affect the filtering effect. The antistatic layer 102 can reduce the static electricity generated and attached to the filter bag body during use, prevent sparks caused by static electricity accumulation, and thus prevent the occurrence of safety accidents such as dust explosions. The corrosion-resistant layer 103 can enhance the acid and alkali resistance of the filter bag body and increase its service life in a corrosive environment. The wear-resistant layer 104 can significantly improve the wear resistance of the filter bag body and reduce the wear caused by particulate scouring, friction, etc., thereby extending the service life of the filter bag.

[0028] Principle and advantages of use: First, rotate the protective cylinder 1 so that the external thread 6 on the outside of the protective cylinder 1 is threadedly connected with the internal thread 5 inside the connecting ring 4, remove the protective cylinder 1 from the bottom end of the connecting flange 3, and then push the unlocking block 15 to make the unlocking block 15 slide inside the locking groove 14. The unlocking block 15 pushes the locking block 134, so that the locking block 134 drives the movable plate 133 to press against the reset spring 132. The reset spring 132 is compressed, and at the same time, the locking block 134 retracts into the cavity 131. The locking block 134 and the locking groove 14 are locked. Then pull the installation frame 9 outward to complete the insertion of the installation frame 9 and the installation groove 8. Take the dust filter bag body 10 out of the protective cylinder 1, and reverse the operation to complete the installation of the dust filter bag body 10.

[0029] The utility model can enable technicians to quickly complete the disassembly and installation work when the filter bag needs to be replaced, greatly shortening the maintenance time. Due to the quick replacement process, the equipment downtime caused by replacing the filter bag is reduced, thereby improving production efficiency.

Claims

1. A dust removal filter bag with a multi-layer structure, comprising a protective tube (1), characterized in that: The bottom end of the protective tube (1) is provided with a through hole (2), the upper end of the protective tube (1) is movably connected with a connecting flange (3), the upper end of the protective tube (1) is provided with a mounting groove (8), the interior of the mounting groove (8) is plugged with a mounting frame (9), the bottom end of the mounting frame (9) is fixedly connected with a dust filter bag body (10), the bottom end of the mounting frame (9) is symmetrically fixedly connected with a connecting block (11), and a fixing component (13) is installed inside the connecting block (11); The fixing assembly (13) comprises a cavity (131), a return spring (132), a movable plate (133) and a locking block (134); a cavity (131) is provided inside the connecting block (11); one end of the cavity (131) is symmetrically fixedly connected to the return spring (132); the other end of the return spring (132) is fixedly connected to the movable plate (133); the movable plate (133) is slidably connected to the cavity (131); the end of the movable plate (133) away from the return spring (132) is fixedly connected to the locking block (134); the end of the locking block (134) away from the movable plate (133) extends out of the side end of the connecting block (11); and the upper end of the locking block (134) is set as an inclined surface.

2. The dust removal filter bag with a multi-layer structure according to claim 1, characterized in that: A connecting groove (12) is provided at the bottom end of the installation frame (9), and the connecting groove (12) and the connecting block (11) are plug-connected. A locking groove (14) is provided at one end inside the connecting groove (12), and the other end of the locking groove (14) passes through the installation frame (9), and the locking groove (14) and the locking block (134) are snap-connected.

3. The dust removal filter bag with a multi-layer structure according to claim 2, characterized in that: An unlocking block (15) is slidably connected inside the locking groove (14); one end of the locking block (134) away from the locking block (134) extends into the interior of the installation frame (9); both ends of the locking block (134) are symmetrically fixedly connected to the limiting blocks (16); limiting grooves (17) are symmetrically provided inside the locking groove (14); and the limiting grooves (17) and the limiting blocks (16) are slidably connected.

4. The dust removal filter bag with a multi-layer structure according to claim 1, characterized in that: The bottom end of the connecting flange (3) is fixedly connected to a connecting ring (4), the inner wall of the connecting ring (4) is provided with an internal thread (5), the outer wall of the protective tube (1) is provided with an external thread (6), and the internal thread (5) and the external thread (6) are threadedly connected.

5. The dust removal filter bag with a multi-layer structure according to claim 1, characterized in that: A sealing gasket (7) is fixedly connected to the bottom end of the connecting flange (3), and the sealing gasket (7) and the upper end of the mounting frame (9) are in contact with each other.

6. The dust removal filter bag with a multi-layer structure according to claim 1, characterized in that: The dust filter bag body (10) comprises a high-temperature resistant layer (101), an antistatic layer (102), a corrosion-resistant layer (103) and a wear-resistant layer (104); the antistatic layer (102) is fixedly connected to the outside of the high-temperature resistant layer (101); the corrosion-resistant layer (103) is fixedly connected to the outside of the antistatic layer (102); and the wear-resistant layer (104) is fixedly connected to the outside of the corrosion-resistant layer (103).

7. The dust removal filter bag with a multi-layer structure according to claim 6, characterized in that: The high temperature resistant layer (101) is made of a glass fiber layer, the antistatic layer (102) is made of an antistatic polyester needle-punched felt layer, the corrosion resistant layer (103) is made of a fluoromethan fiber layer, and the wear resistant layer (104) is made of a methyl methan fiber layer.

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