Sealing structure of large-flow filter element butt joint end

Abstract

The utility model belongs to the technical field of big flow filter core seal, concretely relates to a kind of sealing structure of big flow filter core butt joint end, including sleeve, the bottom of sleeve is fixedly connected with pipe cover, filter core body is movably connected in the inside of sleeve, one end of filter core body is fixedly connected with bottom end cover, the one end away from bottom end cover of filter core body is fixedly connected with connecting pipe, the top of connecting pipe is fixedly connected with top end cover, the bottom of top end cover is fixedly connected with annular connecting block, the one end away from pipe cover of sleeve is equipped with annular sealing groove.The utility model inserts filter core body into sleeve inside, and the outer thread of annular connecting block and the inner thread of sleeve make top end cover and sleeve thread connection, and in this process, annular boss will be embedded in annular sealing groove of sleeve end portion, and with constantly screwing top end cover, annular boss and annular sealing groove deep contact then extrude annular sealing ring, to further improve the sealing effect of butt joint end.

Description

Technical Field

[0001] This utility model belongs to the field of high-flow filter element sealing technology, specifically relating to a sealing structure for the docking end of a high-flow filter element. Background Technology

[0002] High-flow-rate filter cartridges are specifically designed for filtering high-flow-rate liquids or gases. They feature high-efficiency filtration, long lifespan, and ease of maintenance, and are widely used in industrial, municipal, medical, and food industries. This particular high-flow-rate filter cartridge has a flow rate of 70 cubic meters per hour, a length of 1016 mm, and an outer diameter ranging from 152 mm to 161 mm. Its structure consists of a flow guide layer, a support layer, and a filter layer, with a designed lifespan of 3-6 months. It uses ultrasonic heat fusion welding, with nitrile rubber as the sealing material. The operating pressure difference does not exceed 0.245 MPa, and the filtration ratio reaches β≥1000, providing an accuracy range of 1-50 microns. The sealing structure at the connection end of the high-flow-rate filter cartridge achieves high-efficiency and reliable filtration performance through a multi-layer sealing design, standardized interfaces, and high-performance sealing materials, making it a core component ensuring the stable operation of industrial fluid filtration systems.

[0003] Currently, existing high-flow filter cartridges typically require placement in a container of a specific shape during use. The filter cartridge is then assembled in a sealed manner by compression within the container. However, the connection between the traditional high-flow filter cartridge and the container is often achieved through a threaded connection. Although this method prevents the high-flow filter cartridge from loosening, as the internal pressure of the container increases, leaks may still occur at the joints, thus reducing the sealing effect. Utility Model Content

[0004] The purpose of this invention is to provide a sealing structure for the docking end of a high-flow filter cartridge. This addresses the problem that existing high-flow filter cartridges typically require placement in a container of a specific shape during use, where the cartridge is sealed by compression. However, the docking end between the traditional high-flow filter cartridge and the container is often connected by threads. While this method prevents the filter cartridge from loosening, as the internal pressure of the container increases, leakage may still occur at the possible gaps in the docking end, thus reducing the sealing effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing structure for the docking end of a high-flow filter element, comprising a sleeve, a tube cap fixedly connected to the bottom of the sleeve, a filter element body movably connected to the inner side of the sleeve, and a bottom end cap fixedly connected to one end of the filter element body;

[0006] The filter element body is fixedly connected to a connecting pipe at one end away from the bottom cover. A top cover is fixedly connected to the top of the connecting pipe. An annular connecting block is fixedly connected to the bottom of the top cover. An annular sealing groove is opened at one end of the sleeve away from the tube cover. An annular protrusion is fixedly connected to the bottom of the top cover. An annular sealing ring is bonded to the bottom of the annular protrusion.

[0007] As a preferred sealing structure for the docking end of a high-flow filter element according to this utility model, the outer wall of the annular connecting block is provided with external threads, and the end of the sleeve away from the tube cover is provided with internal threads.

[0008] As a preferred sealing structure for the docking end of a high-flow filter element according to this utility model, the dimensions of the annular protrusion and the annular sealing groove are adapted to each other.

[0009] As a preferred sealing structure for the docking end of a high-flow filter element according to this utility model, the annular connecting block is located inside the annular protrusion.

[0010] As a preferred sealing structure for the docking end of a high-flow filter element of this utility model, a first annular positioning plate is fixedly connected to the outer wall of the connecting pipe, a second annular positioning plate is fixedly connected to the outer wall of the bottom cover, an annular positioning protrusion is fixedly connected to the bottom of the bottom cover, and an annular positioning groove is provided on the inner bottom of the pipe cover.

[0011] As a preferred sealing structure for the docking end of a high-flow filter element according to this utility model, the first annular positioning plate and the second annular positioning plate are symmetrically distributed inside the sleeve, and the first annular positioning plate and the second annular positioning plate are adapted to the inner diameter of the sleeve.

[0012] As a preferred sealing structure for the docking end of a high-flow filter element according to this utility model, the dimensions of the annular positioning protrusion and the annular positioning groove are adapted to each other.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By inserting the filter element body into the sleeve, the top cover is threadedly connected to the sleeve using the external thread of the annular connecting block and the internal thread of the sleeve. During this process, the annular protrusion will embed into the annular sealing groove at the end of the sleeve. As the top cover is continuously screwed, the annular protrusion will come into contact with the depth of the annular sealing groove, which will squeeze the annular sealing ring, thereby further improving the sealing effect of the mating end.

[0015] With the first and second annular positioning plates, when the filter element body is placed into the sleeve, the first and second annular positioning plates can position the two ends of the filter element body, so that the filter element body can be accurately positioned at the center of the sleeve. In addition, the annular positioning protrusion at the bottom of the end cap will also be embedded in the annular positioning groove, thereby further improving the stability of the filter element body in the sleeve. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the structural structure of this utility model from a bottom view.

[0020] Figure 4 This is an enlarged structural diagram of the present invention (A).

[0021] Figure 5 This is an enlarged structural schematic diagram of the present invention, B.

[0022] In the diagram: 1. Sleeve; 2. Pipe cap; 3. Filter element body; 4. Bottom cap; 5. Connecting pipe; 6. Top cap; 7. Annular connecting block; 8. Annular sealing groove; 9. Annular protrusion; 10. Annular sealing ring; 11. First annular positioning plate; 12. Second annular positioning plate; 13. Annular positioning protrusion; 14. Annular positioning groove. 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 1-5 The present invention provides the following technical solution: a sealing structure for the docking end of a high flow filter element, including a sleeve 1, a tube cap 2 fixedly connected to the bottom of the sleeve 1, a filter element body 3 movably connected to the inner side of the sleeve 1, and a bottom end cap 4 fixedly connected to one end of the filter element body 3.

[0025] A connecting pipe 5 is fixedly connected to the end of the filter element body 3 away from the bottom end cover 4. A top end cover 6 is fixedly connected to the top of the connecting pipe 5. An annular connecting block 7 is fixedly connected to the bottom of the top end cover 6. An annular sealing groove 8 is opened at the end of the sleeve 1 away from the pipe cover 2. An annular protrusion 9 is fixedly connected to the bottom of the top end cover 6. An annular sealing ring 10 is bonded to the bottom of the annular protrusion 9.

[0026] It should be noted that the annular protrusion 9 and the annular sealing ring 10 are bonded with waterproof adhesive. The waterproof adhesive is an acrylic waterproof adhesive, which has good weather resistance, water resistance and UV resistance. It dries quickly, is easy to use, and has good bonding strength to a variety of materials, such as plastics, rubber and metals. Its excellent waterproof performance is the main feature of the waterproof adhesive. It can effectively prevent water penetration, form a reliable waterproof barrier, and resist the corrosion of chemicals such as acids, alkalis and salts, and maintain stable performance in different chemical environments.

[0027] Preferably, the outer wall of the annular connecting block 7 is provided with external threads, the end of the sleeve 1 away from the pipe cover 2 is provided with internal threads, the dimensions between the annular protrusion 9 and the annular sealing groove 8 are matched, and the annular connecting block 7 is located inside the annular protrusion 9.

[0028] In practical use, the filter element body 3 is inserted into the sleeve 1, and the top cover 6 is threadedly connected to the sleeve 1 by the external thread of the annular connecting block 7 and the internal thread of the sleeve 1. During this process, the annular protrusion 9 will be embedded in the annular sealing groove 8 at the end of the sleeve 1. As the top cover 6 is continuously turned, the annular protrusion 9 will come into contact with the deep annular sealing groove 8, which will squeeze the annular sealing ring 10, thereby further improving the sealing effect of the mating end.

[0029] Preferably, the outer wall of the connecting pipe 5 is fixedly connected to a first annular positioning plate 11, the outer wall of the bottom end cover 4 is fixedly connected to a second annular positioning plate 12, the bottom of the bottom end cover 4 is fixedly connected to an annular positioning protrusion 13, and the inner bottom of the pipe cover 2 is provided with an annular positioning groove 14. The first annular positioning plate 11 and the second annular positioning plate 12 are symmetrically distributed inside the sleeve 1, and the first annular positioning plate 11 and the second annular positioning plate 12 are adapted to the inner diameter of the sleeve 1, and the dimensions between the annular positioning protrusion 13 and the annular positioning groove 14 are adapted to each other.

[0030] It should be noted that the first annular positioning plate 11 and the second annular positioning plate 12 are made of polytetrafluoroethylene expanded plate. Polytetrafluoroethylene expanded plate does not contain any adhesives or additives, and has extremely strong chemical corrosion resistance, as well as good flexibility, compression resilience, high and low temperature resistance, non-aging properties, and self-lubricating properties.

[0031] In practical use, by setting the first annular positioning plate 11 and the second annular positioning plate 12, when the filter element body 3 is placed into the sleeve 1, the first annular positioning plate 11 and the second annular positioning plate 12 can position the two ends of the filter element body 3, so that the filter element body 3 can be accurately positioned at the center position of the sleeve 1. In addition, the annular positioning protrusion 13 at the bottom of the bottom end cover 4 will also be embedded in the annular positioning groove 14, thereby further improving the stability of the filter element body 3 in the sleeve 1.

[0032] Working principle: First, the filter element body 3 is inserted into the sleeve 1. The top cover 6 is threadedly connected to the sleeve 1 using the external thread of the annular connecting block 7 and the internal thread of the sleeve 1. During this process, the annular protrusion 9 will be embedded in the annular sealing groove 8 at the end of the sleeve 1. As the top cover 6 is continuously turned, the annular protrusion 9 will come into deep contact with the annular sealing groove 8, which will squeeze the annular sealing ring 10, thereby further improving the sealing effect of the mating end. Furthermore, through the setting of the first annular positioning plate 11 and the second annular positioning plate 12, when the filter element body 3 is placed into the sleeve 1, the first annular positioning plate 11 and the second annular positioning plate 12 can position the two ends of the filter element body 3, so that the filter element body 3 can be accurately positioned at the center position of the sleeve 1. The annular positioning protrusion 13 at the bottom of the bottom cover 4 will also be embedded in the annular positioning groove 14, thereby further improving the stability of the filter element body 3 in the sleeve 1.

[0033] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sealing structure for the mating end of a high-flow filter element, comprising a sleeve (1), characterized in that: The bottom of the sleeve (1) is fixedly connected to the tube cap (2), the inner side of the sleeve (1) is movably connected to the filter element body (3), and one end of the filter element body (3) is fixedly connected to the bottom end cap (4). The filter element body (3) is fixedly connected to a connecting pipe (5) at one end away from the bottom end cap (4). The top end cap (6) is fixedly connected to the top of the connecting pipe (5). The bottom of the top end cap (6) is fixedly connected to an annular connecting block (7). The sleeve (1) is provided with an annular sealing groove (8) at one end away from the tube cap (2). The bottom of the top end cap (6) is fixedly connected to an annular protrusion (9). The bottom of the annular protrusion (9) is bonded with an annular sealing ring (10).

2. The sealing structure at the docking end of a high-flow filter element according to claim 1, characterized in that: The outer wall of the annular connecting block (7) is provided with external threads, and the end of the sleeve (1) away from the pipe cover (2) is provided with internal threads.

3. The sealing structure at the docking end of a high-flow filter element according to claim 1, characterized in that: The dimensions of the annular protrusion (9) and the annular sealing groove (8) are compatible.

4. The sealing structure at the docking end of a high-flow filter element according to claim 1, characterized in that: The annular connecting block (7) is located inside the annular protrusion (9).

5. The sealing structure at the docking end of a high-flow filter element according to claim 1, characterized in that: The outer wall of the connecting pipe (5) is fixedly connected to a first annular positioning plate (11), the outer wall of the bottom cover (4) is fixedly connected to a second annular positioning plate (12), the bottom of the bottom cover (4) is fixedly connected to an annular positioning protrusion (13), and an annular positioning groove (14) is opened on the inner bottom of the pipe cover (2).

6. The sealing structure at the docking end of a high-flow filter element according to claim 5, characterized in that: The first annular positioning plate (11) and the second annular positioning plate (12) are symmetrically distributed inside the sleeve (1), and the first annular positioning plate (11) and the second annular positioning plate (12) are adapted to the inner diameter of the sleeve (1).

7. The sealing structure at the docking end of a high-flow filter element according to claim 5, characterized in that: The dimensions of the annular positioning protrusion (13) and the annular positioning groove (14) are adapted to each other.

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