A metal filter bag with a sealing structure

Abstract

This utility model relates to a metal filter bag with a sealing structure, belonging to the technical field of metal filter bags. It includes a body and a pipe. A connecting rigid pipe is fixedly installed on the top of the body, a fixed flange is fixedly installed on the top of the connecting rigid pipe, and a connecting flange is fixedly installed on the bottom of the pipe. The fixed flange and the connecting flange are connected by connecting bolts and connecting nuts. A reinforcing sealing assembly is provided on the pipe and the connecting rigid pipe. The reinforcing sealing assembly includes an upper sliding sleeve fitted onto the surface of the pipe. This metal filter bag with a sealing structure enhances the sealing effect by fitting an upper sliding sleeve onto the surface of the pipe, providing an upper sealing cap at the bottom of the upper sliding sleeve, and a lower sliding sleeve onto the surface of the connecting rigid pipe, providing a lower sealing cap at the top of the lower sliding sleeve. The upper sealing cap is threadedly connected to the connecting flange, and the lower sealing cap is threadedly connected to the upper sealing cap, thus enclosing the edges of the fixed flange and the connecting flange.

Description

Technical Field

[0001] This utility model relates to the field of metal filter bag technology, specifically a metal filter bag with a sealing structure. Background Technology

[0002] Metal filter bags are filter elements made of metal and are typically used in high-temperature, high-pressure, corrosive environments or applications requiring high-precision filtration. They feature high-temperature resistance, corrosion resistance, high strength and wear resistance, high-efficiency filtration with low resistance, and easy cleaning and recyclability. The main structure of a metal filter bag includes a filter media layer composed of metal fiber felt, sintered metal mesh, or sintered metal powder felt, and a supporting skeleton.

[0003] The auxiliary structure of metal filter bags includes sealing and connecting components for connection with filter equipment. Utility model patent CN217247471 U discloses an interface sealing structure for metal filter bags, including a metal filter bag body. A pipe is provided at the top of the metal filter bag body, and fixing blocks are fixedly connected to both sides of the pipe. A slot is formed at the top of each fixing block. Fixing plates are slidably connected to the tops of both sides of the metal filter bag body via sliders and grooves. Fixing sleeves are movably connected to the surface of the fixing plates via bearings. This utility model, through the coordinated use of the metal filter bag body, pipe, fixing blocks, slots, fixing plates, fixing sleeves, support blocks, locking blocks, limiting plates, limiting rods, limiting grooves, tension springs, convex sealing rings, and concave sealing rings, solves the problem that existing metal filter bags lack a quick-sealing structure. Currently, metal filter bags are connected and sealed to the discharge pipe via threads, requiring users to rotate the metal filter bag multiple times to achieve a seal, which is time-consuming, laborious, and inconvenient for users.

[0004] However, the metal filter bag uses an interface sealing structure, which seals by using a combination of a convex sealing ring and a concave sealing ring. This single-layer sealing structure is prone to damage during use due to high temperature and corrosion, leading to leakage. Therefore, a metal filter bag with a sealing structure is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a metal filter bag with a sealing structure, which has advantages such as a multi-layer sealing structure and solves the problems mentioned in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A metal filter bag with a sealed structure includes a body and a pipe. A connecting rigid pipe is fixedly installed on the top of the body, a fixed flange is fixedly installed on the top of the connecting rigid pipe, and a connecting flange is fixedly installed on the bottom of the pipe. The fixed flange and the connecting flange are bolted together by connecting bolts and connecting nuts. A reinforced sealing component is provided on the pipe and the connecting rigid pipe.

[0008] The enhanced sealing assembly includes an upper sliding sleeve fitted onto the surface of the pipe, an upper sealing cap fixedly installed at the bottom of the upper sliding sleeve, the upper sealing cap being threadedly connected to the mating flange, a lower sliding sleeve fitted onto the surface of the mating rigid pipe, a lower sealing cap fixedly installed at the top of the lower sliding sleeve, and the lower sealing cap being threadedly connected to the upper sealing cap.

[0009] Furthermore, an upper limit ring is fixedly installed on the surface of the pipe, and a lower limit ring is fixedly installed on the surface of the mating rigid pipe.

[0010] Furthermore, both the upper and lower sealing covers have arc-shaped slots on their tops that are compatible with the connecting bolts and connecting nuts.

[0011] Furthermore, a mating sealing ring is placed between the fixed flange and the mating flange, and a mating groove is provided on the opposite side of both the fixed flange and the mating flange, with the mating sealing ring and the mating groove being compatible.

[0012] Furthermore, an upper sealing ring is fixedly installed at the bottom of the upper sealing cover, and the upper sealing ring contacts the top of the mating flange.

[0013] Furthermore, a lower sealing ring is fixedly installed on the top of the lower sealing cover, and the lower sealing ring is in contact with the bottom of the fixed flange.

[0014] Furthermore, a number of reinforcing ribs are fixedly installed on the surface of the main body, a reinforcing ring is fixedly installed on the surface of the main body, and a bottom cover is provided at the bottom of the main body.

[0015] Compared with the prior art, the present invention provides a metal filter bag with a sealing structure, which has the following beneficial effects:

[0016] 1. This metal filter bag with a sealed structure consists of an upper sliding sleeve fitted onto the surface of the pipe, an upper sealing cap at the bottom of the upper sliding sleeve, a lower sliding sleeve fitted onto the surface of the connecting rigid pipe, and a lower sealing cap at the top of the lower sliding sleeve. The upper sealing cap is threaded to the connecting flange, and the lower sealing cap is threaded to the upper sealing cap. This design encloses the edges of the fixed flange and the connecting flange, increasing the sealing effect. It solves the problem of common metal filter bags that rely on sealing rings between flanges for sealing, resulting in a single-layer sealing structure that is prone to damage and leakage due to high temperatures and corrosion during use.

[0017] 2. This metal filter bag with a sealing structure forms a seal between the upper sealing cover and the mating flange by setting an upper sealing ring at the bottom of the upper sealing cover and a lower sealing ring at the top of the lower sealing cover and a fixed flange, thereby increasing the sealing effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a front sectional view of the fixed flange and the mating flange of this utility model;

[0020] Figure 3 This is a front view of the upper sealing cover and the lower sealing cover of this utility model;

[0021] Figure 4 This is a three-dimensional view of the lower sealing cover of this utility model.

[0022] In the diagram: 1. Body; 2. Pipe; 3. Connecting rigid pipe; 4. Fixed flange; 5. Connecting flange; 6. Connecting bolt; 7. Connecting nut; 8. Upper sliding sleeve; 9. Upper sealing cover; 10. Lower sliding sleeve; 11. Lower sealing cover; 12. Upper limit ring; 13. Lower limit ring; 14. Arc-shaped groove; 15. Connecting sealing ring; 16. Connecting groove; 17. Upper sealing ring; 18. Lower sealing ring; 19. Reinforcing rib; 20. Reinforcing ring; 21. Bottom cover. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1 to 4 In this embodiment, a metal filter bag with a sealing structure includes a body 1 and a pipe 2. A connecting rigid pipe 3 is fixedly installed on the top of the body 1, a fixing flange 4 is fixedly installed on the top of the connecting rigid pipe 3, and a connecting flange 5 is fixedly installed on the bottom of the pipe 2. The fixing flange 4 and the connecting flange 5 are bolted together by connecting bolts 6 and connecting nuts 7. A reinforced sealing component is provided on the pipe 2 and the connecting rigid pipe 3.

[0025] The enhanced sealing assembly includes an upper sliding sleeve 8 fitted onto the surface of pipe 2, with an upper sealing cap 9 fixedly installed at the bottom of the upper sliding sleeve 8. The upper sealing cap 9 is threadedly connected to the mating flange 5. A lower sliding sleeve 10 is fitted onto the surface of the mating rigid pipe 3, with a lower sealing cap 11 fixedly installed at the top of the lower sliding sleeve 10. The lower sealing cap 11 is threadedly connected to the upper sealing cap 9. Threads matching the lower sealing cap 11 are provided on the surface of the upper sealing cap 9, and threads matching the upper sealing cap 9 are provided on the surface of the mating flange 5.

[0026] Specifically, the upper sliding sleeve 8 slides downward, and rotating the upper sliding sleeve 8 causes the upper sealing cover 9 to rotate, so that the upper sealing cover 9 is threadedly connected to the mating flange 5. The lower sliding sleeve 10 moves upward, and rotating the lower sliding sleeve 10 causes the lower sealing cover 11 to be threadedly connected to the upper sealing cover 9.

[0027] Secondly, an upper limit ring 12 is fixedly installed on the surface of pipe 2, and a lower limit ring 13 is fixedly installed on the surface of the connecting rigid pipe 3.

[0028] Specifically, the upper limit ring 12 and the lower limit ring 13 prevent the upper sliding sleeve 8 and the lower sliding sleeve 10 from disengaging from the body 1 and the pipe 2.

[0029] Please see Figure 2 In this embodiment, both the upper sealing cover 9 and the lower sealing cover 11 have arc-shaped slots 14 on their tops that are compatible with the connecting bolts 6 and the connecting nuts 7. After the upper sealing cover 9 and the lower sealing cover 11 are installed, the connecting bolts 6 and the connecting nuts 7 are installed onto the fixed flange 4 and the mating flange 5 through the reserved arc-shaped slots 14.

[0030] A mating seal ring 15 is placed between the fixed flange 4 and the mating flange 5. A mating groove 16 is provided on the opposite side of both the fixed flange 4 and the mating flange 5, and the mating seal ring 15 is compatible with the mating groove 16. The mating seal ring 15 provides the first layer of seal between the fixed flange 4 and the mating flange 5.

[0031] Please see Figure 2 and Figure 3 In this embodiment, an upper sealing ring 17 is fixedly installed at the bottom of the upper sealing cover 9, and the upper sealing ring 17 is in contact with the top of the mating flange 5.

[0032] The lower sealing cover 11 has a lower sealing ring 18 fixedly installed on its top, and the lower sealing ring 18 contacts the bottom of the fixed flange 4. The upper sealing ring 17 and the lower sealing ring 18 form a second seal between the upper sealing cover 9 and the lower sealing cover 11 and the mating flange 5 and the fixed flange 4.

[0033] Please see Figure 1In this embodiment, a number of reinforcing ribs 19 are fixedly installed on the surface of the main body 1, a reinforcing ring 20 is fixedly installed on the surface of the main body 1, and a bottom cover 21 is provided at the bottom of the main body 1.

[0034] The working principle of the above embodiment is as follows: the upper sliding sleeve 8 slides downward, and the upper sliding sleeve 8 is rotated to drive the upper sealing cover 9 to rotate, so that the upper sealing cover 9 is threadedly connected to the mating flange 5. The lower sliding sleeve 10 moves upward, and the lower sliding sleeve 10 is rotated to make the lower sealing cover 11 threadedly connected to the upper sealing cover 9.

[0035] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented.

[0036] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0037] 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.

[0038] 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 metal filter bag with a sealed structure, comprising a body (1) and a pipe (2), characterized in that: A connecting rigid pipe (3) is fixedly installed on the top of the main body (1), a fixed flange (4) is fixedly installed on the top of the connecting rigid pipe (3), a connecting flange (5) is fixedly installed on the bottom of the pipe (2), the fixed flange (4) and the connecting flange (5) are bolted together by connecting bolts (6) and connecting nuts (7), and a reinforced sealing assembly is provided on the pipe (2) and the connecting rigid pipe (3); The enhanced sealing assembly includes an upper sliding sleeve (8) fitted on the surface of the pipe (2), an upper sealing cover (9) fixedly installed at the bottom of the upper sliding sleeve (8), the upper sealing cover (9) being threadedly connected to the mating flange (5), a lower sliding sleeve (10) fitted on the surface of the mating rigid pipe (3), a lower sealing cover (11) fixedly installed at the top of the lower sliding sleeve (10), and the lower sealing cover (11) being threadedly connected to the upper sealing cover (9).

2. A metal filter bag with a sealing structure according to claim 1, characterized in that: An upper limit ring (12) is fixedly installed on the surface of the pipe (2), and a lower limit ring (13) is fixedly installed on the surface of the connecting rigid pipe (3).

3. A metal filter bag with a sealing structure according to claim 1, characterized in that: The top of both the upper sealing cover (9) and the lower sealing cover (11) are provided with arc-shaped slots (14) that are compatible with the connecting bolts (6) and the connecting nuts (7).

4. A metal filter bag with a sealing structure according to claim 1, characterized in that: A mating sealing ring (15) is placed between the fixed flange (4) and the mating flange (5). A mating groove (16) is provided on the opposite side of the fixed flange (4) and the mating flange (5). The mating sealing ring (15) and the mating groove (16) are compatible.

5. A metal filter bag with a sealing structure according to claim 1, characterized in that: The bottom of the upper sealing cover (9) is fixedly installed with an upper sealing ring (17), which is in contact with the top of the mating flange (5).

6. A metal filter bag with a sealing structure according to claim 1, characterized in that: The lower sealing cover (11) is fixedly installed with a lower sealing ring (18) on its top, and the lower sealing ring (18) is in contact with the bottom of the fixed flange (4).

7. A metal filter bag with a sealing structure according to claim 1, characterized in that: The surface of the main body (1) is fixedly equipped with a number of reinforcing ribs (19), a reinforcing ring (20) is fixedly installed on the surface of the main body (1), and a bottom cover (21) is provided at the bottom of the main body (1).

Images