Y-type filter pleated cartridge structure

Abstract

The utility model discloses a Y type filter folding filter core structure, including top, the bottom of filter cartridge is bent and forms lower reinforcing part outward, the upper annular connecting area is provided with in the upper reinforcing part, the lower annular connecting area is provided with in the lower reinforcing part, the lateral surface of filter cartridge is provided with folding filter core, the folding filter core is connected head to tail in horizontal direction, the folding filter core is concentric with filter cartridge and sets up, the top of folding filter core is embedded in the upper annular connecting area, the bottom of folding filter core is embedded in the lower annular connecting area, the upper reinforcing part is connected with annular groove in horizontal direction and is screwed, the lateral surface of folding filter core in horizontal direction plays the role of limiting, and the inner side in horizontal direction is limited to folding filter core through filter cartridge, and also realizes fixed through the upper annular connecting area and the lower annular connecting area in height direction, strengthens the fixed effect.

Description

Technical Field

[0001] This utility model relates to filter cartridges, and more particularly to a Y-type pleated filter cartridge structure. Background Technology

[0002] A Y-type filter is a simple and efficient filtration device that uses a metal mesh to directly intercept impurities in liquids or gases. It gets its name from the Y-shaped shape of the internal filter mesh. Its core working principle is that fluid enters the filter through the inlet, passes through the precisely designed filter element, and solid particles are trapped inside the mesh, while clean fluid flows out through the outlet. When the filter element accumulates excessive impurities due to prolonged use, simply open the screw plug at the bottom of the main pipe periodically to drain the contaminants or remove the filter element for cleaning. Operation and maintenance are extremely simple. It is widely used in the pretreatment stages of pipelines for various media such as petroleum, chemical, municipal water supply, and steam systems, effectively protecting critical equipment such as pumps, valves, and instruments from particulate wear and clogging. It is an indispensable basic component in industrial pipeline systems.

[0003] As an important component of the Y-type filter structure, the filter element is disclosed in the prior art. Chinese utility model patent application number "202022682885.1" discloses a Y-type filter, which discloses the basic structure of the filter element, namely a single-end open cylinder with a filter screen structure, with one end of the opening for fluid to enter. In the prior art, pleated filter screens have the advantages of large filtration area and good filtration effect, so they are applied to filter elements. However, the two ends of the pleated filter screen are folded, and it is difficult to fix the two ends of the pleated filter screen in the height direction. Utility Model Content

[0004] The purpose of this utility model is to provide a Y-type filter pleated filter element structure, which uses the upper annular connecting area and the lower annular connecting area on the height of the filter cartridge to limit the movement and fix the pleated filter screen.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A Y-type filter pleated filter element structure includes a top cover, an annular groove at the bottom of the top cover, the annular groove being concentrically arranged with the bottom of the top cover, a filter cylinder being disposed within the annular groove, filter holes being disposed on the surface of the filter cylinder, the top of the filter cylinder being bent outward to form an upper reinforcing part, the bottom of the filter cylinder being bent outward to form a lower reinforcing part, an upper annular connecting area being disposed within the upper reinforcing part, a lower annular connecting area being disposed within the lower reinforcing part, a pleated filter element being disposed on the outer side of the filter cylinder, the pleated filter elements being connected end to end in the horizontal direction, the pleated filter elements being concentrically arranged with the filter cylinder, the top of the pleated filter element being embedded in the upper annular connecting area, the bottom of the pleated filter element being embedded in the lower annular connecting area, and the upper reinforcing part being threadedly connected to the annular groove in the horizontal direction.

[0006] Preferably, the annular groove is formed by an axial recess at the bottom of the top cover, and the annular groove includes an outer wall, a bottom wall, and an inner wall, which together form an annular opening for the insertion of the upper reinforcing part.

[0007] By adopting the above technical solution, a regular annular opening is formed at the bottom of the top cover through milling, allowing the upper reinforcing part at the top of the filter cartridge to be inserted and fixed, thus ensuring the alignment and accuracy of the threaded connection between the internal and external threads.

[0008] Preferably, the upper reinforcing part includes an upper top plate and an upper side plate, the upper top plate and the upper side plate are annular, the outer side of the upper top plate is connected to the upper side plate, the inner side of the upper top plate is connected to the top of the filter cartridge, and the upper annular connecting area is formed by the upper top plate, the upper side plate and the filter cartridge.

[0009] By adopting the above technical solution, the upper and lower reinforcing parts are connected to the top of the filter cartridge by sheet metal, forming a U-shape, which improves the structural strength and allows the two ends of the folded filter element to be inserted.

[0010] Preferably, the lower reinforcing part includes a lower base plate and a lower side plate, the lower base plate and the lower side plate are annular, the outer side of the lower base plate is connected to the bottom of the lower side plate, the inner side of the lower base plate is connected to the bottom of the filter cartridge, and the lower annular connecting area is formed by the lower side plate, the lower base plate and the filter cartridge.

[0011] Preferably, the outer side of the upper side plate is provided with an external thread, and the outer side wall is provided with an internal thread that mates with the external thread, and the depth of the outer side wall is 4-5mm.

[0012] By adopting the above technical solution, the external thread is formed on the outside of the sheet metal bend, ensuring the integrity of the filter cartridge. At the same time, the depth requirement of the outer wall ensures the sealing performance and connection strength when the outer wall and the external thread are mated, avoiding the problem of excessively high milling processing costs.

[0013] Preferably, a sealing ring is provided in the annular groove, with the top of the sealing ring abutting against the bottom wall and the bottom of the sealing ring abutting against the top plate.

[0014] By adopting the above technical solution, the sealing ring improves the sealing performance and prevents impurities from entering the filter cartridge from the gap between the connections. At the same time, the elastic sealing ring further improves the sealing performance between the two.

[0015] Preferably, the pleated filter element is made of metal mesh, the outer surface of the pleated filter element is wavy in the horizontal direction, the top of the pleated filter element is the top edge, and the bottom of the pleated filter element is the bottom edge.

[0016] By adopting the above technical solution, the wavy pleated filter element greatly increases the effective filtration area within a limited space, reduces flow resistance, and improves the filtration effect.

[0017] Preferably, the upper annular connecting area has its top edge bent and pressed, the folded filter element is stacked at the top and bottom edges, and the lower annular connecting area has its bottom edge bent and pressed.

[0018] By adopting the above technical solution, the sheet metal bending and pressing method can fix both ends of the folded filter element in the height direction, and at the same time have a sealing effect. It also has a good connection effect and high strength at the threaded connection position.

[0019] Preferably, the pleated filter element is V-shaped at the top and bottom edges, with an upper hot-melt sealant provided in the upper annular connecting area, the top edge embedded in the upper annular connecting area, a lower hot-melt sealant provided in the lower annular connecting area, and the bottom edge embedded in the lower annular connecting area.

[0020] By adopting the above technical solution, the hot melt sealant plays the role of sealing the bottom of the pleated filter element, that is, preventing impurities from leaking from the upper and lower annular connection area. At the same time, the hot melt sealant fills the pores in the pleated filter element, and after cooling, it enhances the fixing and sealing effect.

[0021] In summary, the structure of the upper and lower reinforcing parts, with the upper and lower annular connecting areas formed by the reverse snapping at both ends in the height direction of the pleated filter element, serves to limit the outer side of the pleated filter element in the horizontal direction. On the inner side in the horizontal direction, the filter cartridge also limits the pleated filter element. Simultaneously, the upper and lower annular connecting areas in the height direction provide fixation, preventing the pleated filter element from detaching. The threaded connection of the upper reinforcing part and the annular groove allows for quick disassembly of the filter cartridge and the pleated filter element. Furthermore, the filter cartridge, located on the inner side, withstands fluid impact during filtration, reducing deformation of the pleated filter element and extending its service life. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of Example 1;

[0023] Figure 2 This is a schematic diagram of the structure after removing the pleated filter element in Example 1;

[0024] Figure 3 This is a cross-sectional schematic diagram of Example 1;

[0025] Figure 4 yes Figure 3 An enlarged schematic diagram of part A is shown below;

[0026] Figure 5 This is a schematic diagram of the structure within the lower annular connecting area in Embodiment 2;

[0027] In the diagram, 1. Top cover; 11. Annular groove; 12. Sealing ring; 13. Outer wall; 14. Internal thread; 15. Bottom wall; 16. Inner wall; 17. Annular opening; 2. Filter cartridge; 21. Folded filter element; 22. Top edge; 23. Bottom edge; 3. Upper reinforcing part; 31. Upper annular connecting area; 32. Upper top plate; 33. Upper side plate; 34. External thread; 4. Lower reinforcing part; 41. Lower annular connecting area; 42. Lower bottom plate; 43. Lower side plate; 5. Upper hot melt sealant. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0030] Example 1:

[0031] like Figures 1 to 4 As shown, a Y-type filter pleated filter element 21 structure is provided. The filter element structure uses sheet metal bending to fix the top and bottom of the pleated filter element 21 in the height direction. At the same time, the threaded connection facilitates the quick connection and separation between the filter cartridge 2 and the top cover 1.

[0032] The specific structure includes a top cover 1, with a handle on the top of the top cover 1 for lifting, and an annular groove 11 at the bottom of the top cover 1. The annular groove 11 is formed by milling at the bottom of the top cover 1 and is concentric with the top cover 1. The annular groove 11 is formed by an axial recess at the bottom of the top cover 1. The annular groove 11 includes an outer wall 13, a bottom wall 15 and an inner wall 16. A filter cartridge 2 is installed in the annular groove 11, that is, the top of the filter cartridge 2 is interlocked with the annular groove 11. The surface of the filter cartridge 2 is evenly distributed with filter holes, and the filter holes are larger than the filter hole diameter of the pleated filter element 21.

[0033] like Figure 4As shown, in order to reduce the processing cost of the upper reinforcing part 3 and the lower reinforcing part 4 and simplify the processing technology, the top of the filter cylinder 2 is bent outward by sheet metal to form the upper reinforcing part 3, and the bottom of the filter cylinder 2 is bent outward by sheet metal to form the lower reinforcing part 4. The sheet metal is formed by die stamping or bending. After stamping, the lower surface of the upper reinforcing part 3 forms an upper annular connecting area 31. After stamping, the upper surface of the lower reinforcing part 4 forms a lower annular connecting area 41. Specifically, the upper reinforcing part 3 includes an upper top plate 32 and an upper side plate 33. The upper top plate 32 and the upper side plate 33 are annular. The outer side of the upper top plate 32 is integrally formed with the upper side plate 33, and the inner side of the upper top plate 32 is integrally formed with the top of the filter cylinder 2. The upper annular connecting area 31 is formed by the upper top plate 32, the upper side plate 33 and the sheet metal bending of the outer circumferential side wall of the filter cylinder 2.

[0034] Similarly, the lower reinforcing part 4 and the upper reinforcing part 3 are mirror images of each other in the height direction. The lower reinforcing part 4 includes a lower bottom plate 42 and a lower side plate 43. The lower bottom plate 42 and the lower side plate 43 are annular. The outer side of the lower bottom plate 42 is integrally formed with the bottom of the lower side plate 43 and is perpendicular to it. The inner side of the lower bottom plate 42 is integrally formed with the bottom of the filter cartridge 2 and is perpendicular to it. The lower annular connecting area 41 is surrounded by the lower side plate 43, the lower bottom plate 42 and the outer circumferential side wall of the filter cartridge 2.

[0035] like Figure 4 As shown, the outer side wall 13, the bottom wall 15, and the inner side wall 16 form an annular opening 17 for the upper reinforcing part 3 to be inserted. The upper reinforcing part 3 is threadedly connected to the annular groove 11 in the horizontal direction. That is, the outer side of the upper side plate 33 is provided with an external thread 34, and the outer side wall 13 is provided with an internal thread 14 that mates with the external thread 34. The depth of the outer side wall 13 is 4-5mm. The external thread 34 is formed by pressing the upper side plate 33 outward.

[0036] like Figure 1 and Figure 2 As shown, a pleated filter element 21 is provided on the outer side of the filter cartridge 2. The pleated filter element 21 is made of metal mesh through folding. The outer surface of the pleated filter element 21 is wavy in the horizontal direction. The top of the pleated filter element 21 is the top edge 22, and the bottom of the pleated filter element 21 is the bottom edge 23. The pleated filter element 21 is folded in the horizontal direction to form a V shape, that is, the pleated filter element 21 is V-shaped at the top edge 22 and the bottom edge 23. The pleated filter element 21 is connected end to end in the horizontal direction. The pleated filter element 21 is provided on the outer side of the filter cartridge 2 and is concentric with the filter cartridge 2. The inner side of the pleated filter element 21 abuts against the outer side of the filter cartridge 2. The top of the pleated filter element 21 is embedded in the upper annular connecting area 31, and the bottom of the pleated filter element 21 is embedded in the lower annular connecting area 41.

[0037] like Figure 4As shown, in order to enhance the sealing effect, a sealing ring 12 is provided in the annular groove 11. The sealing ring 12 is made of rubber material. The top of the sealing ring 12 in the upper annular connecting area 31 abuts against the bottom wall 15, and the bottom of the sealing ring 12 in the lower annular connecting area 41 abuts against the upper top plate 32. At the same time, the upper annular connecting area 31 is bent and pressed with the top edge 22, and the folded filter element 21 is stacked at the top edge 22 and the bottom edge 23. The lower annular connecting area 41 is bent and pressed with the bottom edge 23.

[0038] Working principle:

[0039] During the processing, the top and bottom of the filter cylinder 2 are molded into sheet metal to form the upper reinforcing part 3 and the lower reinforcing part 4. A sealing ring 12 is placed in the upper annular connecting area 31 and the lower annular connecting area 41. The folded filter element 21 is opened outward and fitted onto the outside of the filter cylinder 2. Then, the top edge 22 of the folded filter element 21 is embedded in the upper annular connecting area 31 formed by sheet metal, and the bottom edge 23 of the folded filter element 21 is embedded in the lower annular connecting area 41 formed by sheet metal of the lower reinforcing part 4. Then, the top edge 22 and the bottom edge 23 of the folded filter element 21 are clamped inward along the circumferential direction at the top and bottom of the filter cylinder 2 to fix the folded filter element 21. Then, an external thread 34 is stamped on the upper side plate 33 of the upper reinforcing part 3 to form an integral part of the filter cylinder 2 and the folded filter element 21. The top of the filter cylinder 2 is threadedly connected to the top cover 1.

[0040] Example 2:

[0041] like Figure 5 As shown, a Y-type filter pleated filter element 21 structure, the difference between Embodiment 2 and Embodiment 1 is that, in order to improve the connection accuracy and sealing performance, the filter cartridge 2 of Embodiment 2 is formed by milling, that is, the upper reinforcing part 3 and the lower reinforcing part 4 are formed by turning, and the external thread 34 is also processed by turning. The pleated filter element 21 is not fixed by sheet metal clamping, but by hot melt connection. That is, the upper annular connection area 31 is provided with upper hot melt sealant 5, the top edge 22 is embedded in the upper annular connection area 31, the lower annular connection area 41 is provided with lower hot melt sealant, and the bottom edge 23 is embedded in the lower annular connection area 41.

Claims

1. A Y-type filter folded cartridge structure comprising a top cover, characterized in that: The bottom of the top cover is provided with an annular groove, which is concentric with the bottom of the top cover. A filter cartridge is provided in the annular groove, and the surface of the filter cartridge is provided with filter holes. The top of the filter cartridge is bent outward to form an upper reinforcing part, and the bottom of the filter cartridge is bent outward to form a lower reinforcing part. An upper annular connecting area is provided in the upper reinforcing part, and a lower annular connecting area is provided in the lower reinforcing part. A pleated filter element is provided on the outside of the filter cartridge. The pleated filter elements are connected end to end in the horizontal direction. The pleated filter elements are concentric with the filter cartridge. The top of the pleated filter element is embedded in the upper annular connecting area, and the bottom of the pleated filter element is embedded in the lower annular connecting area. The upper reinforcing part and the annular groove are threaded together in the horizontal direction.

2. The Y-type filter pleated filter element structure according to claim 1, characterized in that: The annular groove is formed by an axial recess at the bottom of the top cover. The annular groove includes an outer wall, a bottom wall, and an inner wall, which together form an annular opening for the insertion of the upper reinforcing part.

3. The Y-type filter pleated filter element structure according to claim 2, characterized in that: The upper reinforcing part includes an upper top plate and an upper side plate, which are annular. The outer side of the upper top plate is connected to the upper side plate, and the inner side of the upper top plate is connected to the top of the filter cartridge. The upper annular connecting area is formed by the upper top plate, the upper side plate, and the filter cartridge.

4. The Y-type filter pleated filter element structure according to claim 3, characterized in that: The lower reinforcing part includes a lower base plate and a lower side plate, which are annular. The outer side of the lower base plate is connected to the bottom of the lower side plate, and the inner side of the lower base plate is connected to the bottom of the filter cartridge. The lower annular connecting area is formed by the lower side plate, the lower base plate, and the filter cartridge.

5. The Y-type filter pleated filter element structure according to claim 3, characterized in that: The outer side of the upper side plate is provided with an external thread, and the outer side wall is provided with an internal thread that mates with the external thread. The depth of the outer side wall is 4-5mm.

6. The Y-type filter pleated filter element structure according to claim 5, characterized in that: A sealing ring is provided inside the annular groove. The top of the sealing ring abuts against the bottom wall, and the bottom of the sealing ring abuts against the top plate.

7. The Y-type filter pleated filter element structure according to claim 5, characterized in that: The pleated filter element is made of metal mesh, and the outer surface of the pleated filter element is wavy in the horizontal direction. The top of the pleated filter element is the top edge, and the bottom of the pleated filter element is the bottom edge.

8. The Y-type filter pleated filter element structure according to claim 7, characterized in that: The upper annular connecting area has its sheet metal bent and pressed at the top edge, the folded filter element is stacked at the top and bottom edges, and the lower annular connecting area has its sheet metal bent and pressed at the bottom edge.

9. The Y-type filter pleated filter element structure according to claim 7, characterized in that: The pleated filter element is V-shaped at the top and bottom edges. An upper hot-melt sealant is provided in the upper annular connection area, the top edge is embedded in the upper annular connection area, a lower hot-melt sealant is provided in the lower annular connection area, and the bottom edge is embedded in the lower annular connection area.

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