An interface structure for efficiently sealing a filter bag at room temperature

Abstract

The utility model relates to filter bag interface technical field, and disclose a kind of interface structure of normal temperature filter bag high -efficient sealing, including interface structure ontology, interface structure ontology includes interface pipe and interface head, one end of interface pipe is fixedly connected with external pipeline, interface head is fixedly connected in the open end of normal temperature filter bag ontology, interface pipe is connected with interface head by plug-in mode, interface pipe inside is equipped with convex ring, first slot, second slot, jack and guide slot, interface head includes spacing ring and sealing ring, adopt plug-in type integration structure, replace traditional screw connection, with sealed reliable, connection firm, anti-vibration, simple structure and the advantage of dismounting expediently, effectively solved the poor sealing of existing filter bag interface, easily leak, the problem of inconvenient maintenance.

Description

Technical Field

[0001] This utility model relates to the field of filter bag interface technology, specifically to an interface structure for efficient sealing of filter bags at room temperature. Background Technology

[0002] In the application of filter bags in baghouse dust collectors, the sealing performance and connection reliability of the interface between the filter bag and external ducts (such as tube sheets) are crucial.

[0003] Currently, common filter bag interface structures widely adopt threaded connections, which rely on a single structure for sealing, resulting in poor sealing performance and inconvenient maintenance. For example, a filter bag with good sealing performance at the interface disclosed in publication number CN221385615U includes stacked support rings, with several support rings connected by a through vertical rod, and a filter cloth sleeved on the outer wall of the support rings; the top of the filter cloth is provided with a threaded interface for connecting to an external interface.

[0004] As can be seen from the above-disclosed scheme, the filter bag interface cannot completely eliminate micro air gaps by relying solely on the engagement of the threads. Under system pressure fluctuations or long-term vibration, gas leakage is prone to occur, affecting filtration efficiency. In addition, the interface structure introduces additional inflation bladders, spring clamping mechanisms, and multiple sealing rings. Although these structures improve performance to some extent, they also lead to a complex interface structure, an increase in the number of parts, and higher manufacturing costs. Furthermore, the inflation operation is cumbersome, the bladders are at risk of aging and damage, and maintenance is inconvenient. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an interface structure for efficient sealing of room temperature filter bags, thereby solving the problems of poor sealing performance, easy leakage, and inconvenient disassembly and assembly of existing filter bag interfaces.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency sealing interface structure for room temperature filter bags, comprising an interface structure body, the interface structure body including an interface tube and an interface head, one end of the interface tube being fixedly connected to an external pipe, and the interface head being fixedly connected to the open end of the room temperature filter bag body, the interface tube and the interface head being connected by a plug-in connection, the inner side of the interface tube being provided with a convex ring, a first groove, a second groove, a insertion hole and a guide groove, and the interface head including a limiting ring and a sealing ring, adopting a plug-in integrated structure, replacing the traditional threaded connection, and having the advantages of reliable sealing, firm connection, vibration resistance, simple structure and convenient disassembly and assembly, effectively solving the problems of poor sealing performance, easy leakage and inconvenient maintenance of existing filter bag interfaces.

[0007] Preferably, the sealing ring is provided with a tapered sealing lip ring, a first sealing surface, a second sealing surface and an elastic ring. The tapered sealing lip ring of the sealing ring forms an interference fit with the convex ring of the interface pipe, and multiple radial seals are achieved through the first sealing surface and the second sealing surface.

[0008] Preferably, the limiting ring is provided with a limiting block, a sealing gasket and a hollow groove. The limiting block of the limiting ring can be inserted into the second slot of the interface tube to achieve axial limiting, which facilitates the quick assembly and disassembly of the interface head and the interface tube and improves the convenience of later maintenance.

[0009] Preferably, there are two guide grooves, which are radially symmetrically arranged on the inner wall of the insertion hole to guide the limiting block to slide into the second slot. After the limiting block and the guide groove are misaligned, their locking position can be quickly fixed.

[0010] Preferably, the elastic ring is fixedly integrated inside the sealing ring. The elastic ring has a rectangular cross-sectional shape and is made of elastic stainless steel. The elastic ring can enhance the deformation resistance of the sealing ring, allowing the sealing ring to maintain a long-term seal.

[0011] Preferably, the sealing gasket is sleeved on the limiting ring and located on the outside of the sealing ring. It is used to seal the contact surface between the limiting ring and the second slot, which can buffer vibration and prevent the limiting block from moving arbitrarily.

[0012] Preferably, the hollow groove of the limiting ring is filled with a buffer material, which can further absorb vibration.

[0013] Compared with the prior art, this utility model provides an interface structure for efficient sealing of filter bags at room temperature, which has the following advantages: The modular design, which allows for direct insertion of the interface tube and connector, achieves the core functions of sealing and locking through the interference fit between the convex ring and the conical sealing lip ring, and the engagement of the limiting block and the slot. This highly integrated structure significantly reduces the number of parts, lowering manufacturing costs and assembly complexity. Furthermore, the simplified structure reduces potential failure points and improves overall reliability. The interference fit between the conical sealing lip ring on the sealing ring and the convex ring on the interface tube creates one or more reliable radial seals upon insertion. When replacing the filter bag, a simple operation is all it takes to disengage the limiting block from the slot. Installing a new filter bag involves direct insertion for automatic sealing and locking. The elastic ring and sealing gasket provide elastic compensation, adapting to pressure changes and vibrations, extending service life, and reducing maintenance cycles. The extremely simple operation significantly lowers long-term maintenance costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the interface head structure of this utility model; Figure 3 This is a cross-sectional view of the interface pipe structure of this utility model; Figure 4 yes Figure 2A cross-sectional view of the sealing ring structure; Figure 5 yes Figure 2 A cross-sectional view of the limiting ring structure.

[0015] In the diagram: 1. Interface structure body; 2. Interface tube; 21. Protruding ring; 22. First slot; 23. Second slot; 24. Insertion hole; 25. Guide groove; 3. Interface head; 31. Limiting ring; 311. Limiting block; 312. Sealing gasket; 313. Hollow groove; 32. Sealing ring; 321. Conical sealing lip ring; 322. First sealing surface; 323. Second sealing surface; 324. Elastic ring; 4. Room temperature filter bag body. Detailed Implementation

[0016] 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.

[0017] This utility model provides a technical solution: a high-efficiency sealing interface structure for a room-temperature filter bag, comprising an interface structure body 1. The interface structure body 1 includes an interface tube 2 and an interface head 3. One end of the interface tube 2 is fixedly connected to an external pipe, and the interface head 3 is fixedly connected to the open end of the room-temperature filter bag body 4. The interface tube 2 and the interface head 3 are connected by a plug-in connection. The inner side of the interface tube 2 is provided with a protruding ring 21, a first slot 22, a second slot 23, an insertion hole 24, and a guide groove 25. After the first slot 22 cooperates with the sealing ring 32, it can seal the room-temperature filter bag. The interface of the bag body 4 is elastically locked. After the second slot 23 engages with the limiting block 311, the interface of the ambient temperature filter bag body 4 can be locked a second time. Through the mechanical locking structure, locking failure can be avoided and the interface can be prevented from loosening. The interface head 3 includes a limiting ring 31 and a sealing ring 32. The sealing ring 32 is made of rubber or silicone material. After being squeezed by the first slot 22, it generates elastic force. The elastic force makes the first sealing surface 322 and the second sealing surface 323 fit tightly with the inner wall of the first slot 22, thereby forming multiple radial seals.

[0018] The sealing ring 32 is provided with a tapered sealing lip ring 321, a first sealing surface 322, a second sealing surface 323, and an elastic ring 324. The tapered sealing lip ring 321 is made of the same material as the sealing ring 32 and is integrally injection molded. The tapered sealing lip ring 321 of the sealing ring 32 forms an interference fit with the convex ring 21 of the interface pipe 2. Multiple radial seals are achieved through the first sealing surface 322 and the second sealing surface 323. The elastic ring 324 is fixedly composite inside the sealing ring 32. The cross-sectional shape of the elastic ring 324 is rectangular. The elastic ring 324 is made of elastic stainless steel. The elastic ring 324 can enhance the deformation resistance of the sealing ring 32, so that the sealing ring 32 can maintain a long-term seal.

[0019] The limiting ring 31 is provided with a limiting block 311, a sealing gasket 312 and a hollow groove 313. The limiting block 311 of the limiting ring 31 can be inserted into the second slot 23 of the interface tube 2 to achieve axial limiting, which facilitates the quick disassembly and assembly of the interface head 3 and the interface tube 2 and improves the convenience of later maintenance. There are two guide grooves 25, which are radially symmetrically arranged on the inner wall of the insertion hole 24 to guide the limiting block 311 to slide into the second slot 23. After the limiting block 311 and the guide groove 25 are misaligned, their locking position can be quickly fixed.

[0020] The sealing gasket 312 is fitted onto the limiting ring 31 and located outside the sealing ring 32. It is used to seal the contact surface between the limiting ring 31 and the second slot 23. The sealing gasket 312 is made of elastic sealing rubber and can also buffer vibration and prevent the limiting block 311 from moving at will. The hollow groove 313 of the limiting ring 31 is filled with buffer material, such as polyurethane foam, which can further absorb vibration.

[0021] The working principle of this device is as follows: During installation, first insert the interface head 3 upwards into the interface tube 2. Moving the interface head 3 upwards allows the sealing ring 32 to be inserted upwards into the insertion hole 24. Then, it continues to move upwards, passing through the convex ring 21, causing the sealing ring 32 to press tightly against the first groove 22. The inner wall of the first groove 22 compresses the sealing ring 32, generating elasticity. This elasticity causes the first sealing surface 322 to press and seal against the inner wall of the first groove 22, and the second sealing surface 323 to press and seal against the inner wall and end face of the convex ring 21. Simultaneously, as the interface head 3 moves upwards, the limiting block 311 aligns with the guide groove. 25, allowing it to be inserted upward into the second slot 23. At the same time, the limiting ring 31 presses upward against the sealing gasket 312, causing the sealing gasket 312 to generate elasticity. The elasticity seals the connection surface between the limiting ring 31 and the convex ring 21. Then, the limiting ring 31 is rotated so that the two limiting blocks 311 are moved away from the position of the guide groove 25. Then the limiting ring 31 is released. At this time, the elasticity released by the sealing gasket 312 causes the limiting blocks 311 to press tightly against the inner wall of the second slot 23, preventing arbitrary movement. Under normal temperature conditions, this structure can effectively resist pressure fluctuations and mechanical vibrations, maintaining a long-term seal.

[0022] 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 process, method, article, or apparatus.

[0023] 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 high-efficiency sealing interface structure for a room-temperature filter bag, comprising an interface structure body (1), characterized in that: The interface structure body (1) includes an interface tube (2) and an interface head (3). One end of the interface tube (2) is fixedly connected to an external pipe, and the interface head (3) is fixedly connected to the open end of the ambient temperature filter bag body (4). The interface tube (2) and the interface head (3) are connected by a plug-in method. The inner side of the interface tube (2) is provided with a protruding ring (21), a first slot (22), a second slot (23), a plug hole (24), and a guide groove (25). The interface head (3) includes a limiting ring (31) and a sealing ring (32).

2. The interface structure for high-efficiency sealing of a room-temperature filter bag according to claim 1, characterized in that: The sealing ring (32) is provided with a tapered sealing lip ring (321), a first sealing surface (322), a second sealing surface (323) and an elastic ring (324). The tapered sealing lip ring (321) of the sealing ring (32) forms an interference fit with the convex ring (21) of the interface pipe (2).

3. The interface structure for high-efficiency sealing of a room-temperature filter bag according to claim 1, characterized in that: The limiting ring (31) is provided with a limiting block (311), a sealing gasket (312) and a hollow groove (313). The limiting block (311) of the limiting ring (31) can be inserted into the second slot (23) of the interface tube (2).

4. The interface structure for high-efficiency sealing of a room-temperature filter bag according to claim 3, characterized in that: The guide grooves (25) are two in number and are radially symmetrically arranged on the inner wall of the insertion hole (24) to guide the limiting block (311) to slide into the second slot (23).

5. The interface structure for high-efficiency sealing of a room-temperature filter bag according to claim 2, characterized in that: The elastic ring (324) is fixedly composited inside the sealing ring (32). The cross-sectional shape of the elastic ring (324) is rectangular, and the elastic ring (324) is made of elastic stainless steel.

6. The interface structure for high-efficiency sealing of a room-temperature filter bag according to claim 3, characterized in that: The sealing gasket (312) is fitted onto the limiting ring (31) and located outside the sealing ring (32) to seal the contact surface between the limiting ring (31) and the second slot (23).

7. The interface structure for high-efficiency sealing of a room-temperature filter bag according to claim 3, characterized in that: The hollow groove (313) of the limiting ring (31) is filled with cushioning material.

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