CN221432648U - High leakproofness removes folding filter core and filter of virus - Google Patents

Abstract

The utility model discloses a high-tightness virus-removing folding filter element, which comprises a folding filter element main body, and an upper end cover and a lower end cover which correspond to two ends of the folding filter element main body, wherein the folding filter element main body comprises a filter element shell, a central rod positioned in the filter element shell and a folding filter membrane arranged between the central rod and the filter element shell, two ends of the folding filter element main body are respectively provided with a sealing structure, and the upper end cover and the lower end cover are arranged on one side, far away from the folding filter membrane, of the sealing structure. The utility model aims to provide a folding filter element and a filter with high sealing performance for removing viruses, which provide stable and reliable sealing effect and can maintain excellent sealing performance under severe filtering environment.

Description

High leakproofness removes folding filter core and filter of virus

Technical Field

The utility model belongs to the technical field of filter filtration, and particularly relates to a high-tightness virus-removing folding filter element and a filter.

Background

The folding filter element and the filter shell are packaged to form a complete folding filter element filter which is used as a filtering device to effectively remove impurities in industrial production. Due to the characteristics of high flux, high retention rate, low cost, excellent chemical compatibility and the like, the folding filter element is widely applied to industries such as food, chemical industry, medicine, electronics and the like.

In the prior art, as disclosed in Chinese patent publication No.: the folding filter element device disclosed by CN212188162U and the folding filter element device disclosed by Chinese patent publication No. CN215693212U are generally composed of a central rod, a folding filter membrane, a filter element shell and a sealing end plate, and the sealing of the upstream and downstream of the folding filter membrane is realized through a packaging process. When filtering the material, the material enters into inside the folding filter core through the filter core shell, under the filtration effect of folding filter membrane, obtains the permeate, and the permeate is discharged folding filter core along the center pole again, accomplishes the filtration of material.

However, with the ever-stringent industry demands, the demands for the use of pleated cartridge filters are also increasing. The welding process adopted in the prior art is easy to cause potential damage to the folding filter membrane, and the sealing problem is easy to occur under the current severe use environment to cause filtration failure, so that the folding filter core with high sealing property is needed, and the sealing problem of the folding filter is fundamentally solved.

Disclosure of utility model

The utility model provides a folding filter element and a filter with high sealing performance for removing viruses, which provide stable and reliable sealing effect and can maintain excellent sealing performance under severe filtering environment.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a high leakproofness removes folding filter core of virus, includes folding filter core main part and upper end cover and the lower extreme that corresponds with folding filter core main part both ends, folding filter core main part includes the filter core shell, is located the inside center pole of filter core shell and sets up the folding filter membrane between center pole and filter core shell, folding filter core main part's both ends are equipped with seal structure respectively, upper end cover and lower extreme setting keep away from the one side of folding filter membrane at seal structure.

Preferably, the sealing structure comprises a connecting area formed by glue injection at the end part of the folding filter membrane, and the connecting area is jointed with the side surface of the folding filter membrane.

Preferably, one end of the connecting region, which is far away from the folding filter membrane, is provided with a sealing region which is integrated with the connecting region, and the sealing region extends outwards along the axial direction of the folding filter membrane.

Preferably, the height of the connecting area is 2 to 30mm, and the height of the sealing area is 0 to 20mm.

Preferably, the sealing structure is made of one of rubber, epoxy resin, polyurethane and silica gel.

Preferably, the upper end cover and/or the lower end cover are/is provided with flanges near the outer edge of the folding filter element main body side, and the end part of the filter element shell is provided with clamping grooves corresponding to the flanges.

Preferably, when the flange is tightly fixed with the clamping groove, one side of the upper end cover and/or the lower end cover, which is close to the folding filter element main body, is extruded to act on the sealing structure.

Preferably, the height of the flange is 2 to 40mm, and the height of the clamping groove is 2 to 20mm.

Preferably, the clamping grooves are arranged in a threaded mode along the outer wall of the end portion of the filter element shell, and clamping protrusions which are tightly matched with the clamping grooves are arranged on the inner wall of the flange.

Preferably, the upper end cover and/or the lower end cover are/is provided with an end cover protrusion extending towards the inside of the central rod along the inner wall of the central rod at one side close to the central rod.

Preferably, the upper end cover and/or the lower end cover are/is glued and fixed with the end part of the folding filter membrane through a sealing structure.

The utility model provides a filter, includes filter shell and folding filter core, folding filter core holds inside filter shell, filter shell includes barrel, first end cover and second end cover, be equipped with liquid outlet and gas vent on the first end cover, be equipped with inlet and backward flow mouth on the second end cover, folding filter core's upper end cover is equipped with the filter core interface with liquid outlet and gas vent intercommunication.

Preferably, the filter element interface is provided with at least one clamping part, and the filter element interface is fixedly clamped with the inner side of the first end cover through the clamping part.

Preferably, the filter element interface is provided with an annular welding part, and the inner side of the first end cover is welded and fixed with the welding part of the filter element interface.

The beneficial effects of the utility model are as follows: (1) The folding filter element is sealed through the sealing structures at the two ends, so that damage to the folding filter membrane caused by a welding process can be effectively avoided, the integrity of the folding filter membrane can be effectively maintained in a severe environment, and the sealing reliability and the working environment adaptability are improved; (2) The sealing structure has certain elasticity, and provides a buffer effect for the folding filter membrane, so that the folding filter membrane is prevented from being damaged in the process of transportation and storage and use; (3) The folding filter element forms a high-efficiency double sealing effect through a sealing structure formed by glue injection and the extrusion action of the upper end cover and the lower end cover; (4) Through the connection between flange and the draw-in groove, be convenient for realize upper and lower end cover to folding filter core main body structure's extrusion effect of different degree, realize the coordination of effective seal under the low extrusion and high-efficient seal under the high extrusion.

Drawings

FIG. 1 is a schematic view of a folded filter cartridge of embodiment 1 of the present utility model;

FIG. 2 is a cross-sectional view of a pleated filter cartridge of example 1 of the utility model;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic view of the structure of the filter of the present utility model;

FIG. 5 is a cross-sectional view of a pleated filter insert of example 2 of the utility model;

FIG. 6 is a partial enlarged view at B in FIG. 5;

FIG. 7 is a schematic view showing the structure of an upper end cap according to embodiment 2 of the present utility model;

FIG. 8 is a schematic view showing the structure of a lower end cap according to embodiment 2 of the present utility model;

FIG. 9 is a schematic view showing the structure of a folded filter cartridge according to embodiment 3 of the present utility model;

fig. 10 is a cross-sectional view of a pleated filter insert according to example 4 of the utility model.

In the figure: folding filter element 1, upper end cap 1a, filter element housing 1b, lower end cap 1c, folding filter membrane 1d, center rod 1e, duct structure 101, clamping portion 102, through hole 103, flange 104, end cap protrusion 105, filter element interface 106, clamping groove 107, clamping protrusion 108, welded portion 109, sealing structure 11, connection region 11a, sealing region 11b, filter housing 2, first end cap 2a, second end cap 2b, cylinder 2c, liquid inlet 201, backflow port 202, gas outlet 203, liquid outlet 204.

Detailed Description

The utility model is further described below with reference to the drawings and detailed description.

Example 1

In the embodiment shown in fig. 1, a high-tightness virus-removing folded filter element comprises a folded filter element main body, and an upper end cover 1a and a lower end cover 1c corresponding to two ends of the folded filter element main body, wherein the upper end cover 1a is arranged at the upper end of the folded filter element main body, and the lower end cover 1c is arranged at the lower end of the folded filter element main body. Referring to fig. 2, the folded filter element body includes a filter element housing 1b, a central rod 1e, and a folded filter membrane 1d, wherein the central rod 1e is located inside the filter element housing 1b, a liquid outlet channel is disposed at a central position of the central rod 1e, and the folded filter membrane 1d is disposed between the central rod 1e and the filter element housing 1 b. The folded filter membrane 1d optionally comprises one or more of a PTFE filter membrane, a PES filter membrane, a PVDF filter membrane and a cellulose filter membrane, and a supporting layer may be disposed at the upstream and/or downstream of the folded filter membrane 1d, and the supporting layer optionally comprises one or more of a non-woven fabric, a PE membrane and a PES membrane, in this embodiment, the folded filter membrane 1d is a cellulose filter membrane, and the upstream and downstream of the cellulose filter membrane are both provided with supporting layers made of non-woven fabrics, so as to provide an additional flow channel structure for the virus removal filter membrane, and improve the filtration efficiency. Further, the folded filter membrane 1d may be provided as a multi-layer filter membrane structure, preferably a two-layer filter membrane. The filter element shell 1b is arranged at the outermost side of the folding filter membrane 1d, the folding filter membrane 1d is protected from being damaged by the outside, and a pore canal structure 101 is arranged on the filter element shell so that materials can pass through the filter element shell 1b to enter the folding filter membrane 1d through the pore canal structure 101.

As shown in fig. 2 and 3, sealing structures 11 are respectively provided at both ends of the folded filter element body, and an upper end cap 1a and a lower end cap 1c are provided at one side of the sealing structures 11 away from the folded filter membrane 1 d. The sealing structure 11 includes a connection region 11a injection molded at an end of the folded filter membrane 1d, the connection region 11a having a height of 2 to 30mm, the connection region 11a being joined to a side surface of the folded filter membrane 1d to form an intersecting portion with the folded filter membrane 1 d. The sealing structure 11 is made of one of rubber, epoxy resin, polyurethane and silica gel. After the center rod 1e, the folding filter membrane 1d and the filter element shell 1b are assembled, a folding filter element main body is formed, and the two ends of the folding filter element main body are in sealing connection with the upper end cover 1a and the lower end cover 1c through a sealing structure 11 formed by a glue injection process.

The upper end cap 1a and the lower end cap 1c are provided with flanges 104 near the outer edges of the folded filter element main body side, and the end of the filter element housing 1b is provided with a locking groove 107 at a position corresponding to the flanges 104. When the flange 104 is tightly fixed to the locking groove 107, the upper end cap 1a and the lower end cap 1c are pressed against the seal structure 11 on the side close to the folded filter element body. The height of the flange 104 is 2 to 40mm, the height of the clamping groove 107 is 2 to 20mm, and when the design is actually performed, the height of the flange 104 can exceed the height of the clamping groove 107, so that the flange 104 can completely cover the clamping groove 107, and a better sealing effect is provided for the folded filter element. The draw-in groove 107 is arranged along the outer wall of filter core shell 1b tip, for cooperate with draw-in groove 107 better, and the flange 104 inboard is equipped with draw-in groove 107 complex joint protrusion 108, when both joint cooperations, can provide certain pretension pressure for upper end cover 1a and lower end cover 1c can extrude and act on seal structure 11, thereby further strengthen sealing effect.

As shown in fig. 2, the upper end cap 1a has a ring-shaped structure, and a through hole 103 is provided at the center thereof so as to communicate with the liquid outlet passage of the center rod 1 e. The lower end cover 1c is of a closed structure and provides support for the lower end of the folding filter element main body, so that the sealing structure 11 is prevented from being damaged due to overlarge pressure in the filtering process. The upper end cap 1a and the lower end cap 1c are provided with end cap projections 105 extending along the inner wall of the center rod 1e toward the inside of the center rod 1e on the sides near the center rod 1 e. In the process of glue injection sealing, the end cover protrusion 105 can effectively prevent glue overflow from flowing into the inner side wall of the central rod 1e, and prevent the inner side wall of the central rod 1e from being sealed, so that the effective filtering area of the folding filter element is reduced, and even the filtering flow passage of the folding filter element is influenced.

The utility model provides a filter, includes filter housing 2 and folding filter core 1, combines the fig. 1, and the fig. 4 shows, and folding filter core 1 holds in filter housing 2 inside, and filter housing 2 includes barrel 2c, first end cover 2a and second end cover 2b, is equipped with liquid outlet 204 and gas vent 203 on the first end cover 2a, is equipped with inlet 201 and return port 202 on the second end cover 2b, and folding filter core 1's upper end cover 1a is equipped with the filter core interface 106 with liquid outlet 204 and gas vent 203 intercommunication. Two symmetrical clamping parts 102 are arranged on the filter element interface 106, and the filter element interface 106 is clamped and fixed with the inner side of the first end cover 2a through the clamping parts 102, so that a filter with the folding filter element 1 is formed.

Example 2

Embodiment 2 differs from embodiment 1 in that, as shown in fig. 5 and 6, the end of the connection region 11a away from the folded filter membrane 1d is provided with a sealing region 11b integral with the connection region 11a, the sealing region 11b extends outward along the axial direction of the folded filter membrane 1d, the height of the connection region 11a is 2 to 30mm, and the height of the sealing region 11b is greater than 0 and less than or equal to 20mm. In this way, the sealing structure 11 not only includes the connection region 11a intersecting the folded filter membrane 1d, but also has the sealing region 11b distant from the folded filter membrane 1d, and after the flanges 104 of the upper end cap 1a and the lower end cap 1c are connected with the clamping groove 107 of the cartridge housing 1b, the sealing structure 11 is pressed, so that the folded filter core main body structure is sealed, and a sealed folded filter core is obtained. The cooperation of the sealing area 11b and the connecting area 11a can effectively relieve stress concentration, so that extrusion acting force is more uniformly distributed on the inner surfaces of the upper end cover 1a and the lower end cover 1c, the impact on the folding filter membrane 1d under severe working conditions is reduced, and the service life and sealing reliability of the folding filter membrane 1d are effectively ensured.

The clamping grooves 107 are arranged in a threaded manner along the outer wall of the end part of the filter element housing 1b, as shown in fig. 7 and 8, clamping protrusions 108 tightly matched with the clamping grooves 107 are distributed on the inner walls of the flanges 104 of the upper end cover 1a and the lower end cover 1c, and after the upper end cover 1a and the lower end cover 1c are screwed together in a threaded fit manner, extrusion force acting on the sealing structure 11 of the corresponding end of the folding filter element main body is generated.

Example 3

Embodiment 3 is different from embodiment 1 in that, as shown in fig. 9, a welding part 109 is provided on the filter element interface 106 of the upper end cap 1a, and the welding part 109 is annularly arranged on the side of the upper end cap 1a away from the folded filter membrane 1 d. When the filter including the folded filter element 1 is assembled, the inner side of the first end cap 2a is welded and fixed to the welded portion 109 of the filter element interface 106.

Example 4

Embodiment 4 is different from embodiment 1 in that, as shown in fig. 10, the upper end cap 1a and the lower end cap 1c corresponding to the two ends of the folded filter element body are not provided with flanges at the outer edges thereof, and the end of the filter element housing 1b is not provided with a clamping groove. The sealing structure 11 comprises a connecting region 11a and a sealing region 11b, wherein the sealing region 11b is arranged at one end of the connecting region 11a far away from the folding filter membrane 1d and is integrally formed with the connecting region 11 a. The sealing area 11b extends outwards along the axial direction of the folded filter membrane 1d, the height of the connecting area 11a is 2-30 mm, and the height of the sealing area 11b is more than 0 and less than or equal to 20mm. In this way, the sealing structure 11 not only includes the connection region 11a intersecting the folded filter membrane 1d, but also has the sealing region 11b distant from the folded filter membrane 1d, and the upper end cap 1a and the lower end cap 1c are respectively adhesively fixed to the ends of the folded filter membrane 1d by the sealing structure 11. After gluing, the sealing structure 11 can reliably fix the upper end cover 1a, the lower end cover 1c and the folding filter membrane 1d, and can also play a role in sealing.

The foregoing has outlined rather broadly the more detailed description of embodiments of the utility model, wherein the principles and embodiments of the utility model are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present utility model, the present description should not be construed as limiting the present utility model.

Claims (14)

1. The utility model provides a high leakproofness removes folding filter core of virus, includes folding filter core main part and upper end cover (1 a) and bottom end cover (1 c) that correspond with folding filter core main part both ends, characterized by, folding filter core main part includes filter core shell (1 b), is located inside central pole (1 e) of filter core shell (1 b) and sets up folding filter membrane (1 d) between central pole (1 e) and filter core shell (1 b), folding filter core main part's both ends are equipped with seal structure (11) respectively, upper end cover (1 a) and bottom end cover (1 c) set up in seal structure (11) keep away from one side of folding filter membrane (1 d).

2. A highly sealed, virus-resistant, pleated filter insert according to claim 1, characterized in that the sealing structure (11) comprises a connection zone (11 a) injection-molded at the end of the pleated filter insert (1 d), said connection zone (11 a) being joined to the side of the pleated filter insert (1 d).

3. A highly sealed, virus-resistant, pleated filter insert according to claim 2, characterized in that the end of the connecting region (11 a) remote from the pleated filter insert (1 d) is provided with a sealing region (11 b) integral with the connecting region (11 a), the sealing region (11 b) extending axially outwardly of the pleated filter insert (1 d).

4. A highly sealed, virus-resistant, folded filter cartridge according to claim 3, characterized in that the connecting zone (11 a) has a height of 2 to 30mm and the sealing zone (11 b) has a height of 0 to 20mm.

5. The high-tightness virus-removing folding filter element according to claim 2, wherein the sealing structure (11) is made of one of rubber, epoxy resin, polyurethane and silica gel.

6. The high-tightness virus-removing folding filter element according to claim 1, wherein the outer edge of the upper end cover (1 a) and/or the lower end cover (1 c) close to the folding filter element main body side is provided with a flange, and the end part of the filter element shell (1 b) is provided with a clamping groove (107) corresponding to the flange (104).

7. A highly sealable virus-free pleated filter insert according to claim 6, wherein the flange (104) is pressed against the sealing structure (11) on the side of the upper end cap (1 a) and/or the lower end cap (1 c) adjacent to the pleated filter insert body when tightly secured to the clamping groove (107).

8. A highly sealed, virus-resistant, folded filter cartridge according to claim 6, wherein the height of the flange (104) is 2 to 40mm and the height of the clamping groove (107) is 2 to 20mm.

9. The high-tightness virus-removing folding filter element according to claim 6, wherein the clamping groove (107) is arranged in a thread shape along the outer wall of the end part of the filter element shell (1 b), and the inner wall of the flange (104) is provided with a clamping protrusion (108) which is tightly matched with the clamping groove (107).

10. A highly airtight and virus-free folded filter cartridge as claimed in claim 1, wherein the upper end cap (1 a) and/or the lower end cap (1 c) are provided with end cap protrusions (105) extending along the inner wall of the central rod (1 e) toward the inside of the central rod (1 e) on the side close to the central rod (1 e).

11. A highly airtight and virus-free folded filter cartridge as claimed in claim 1, characterized in that the upper end cap (1 a) and/or the lower end cap (1 c) are adhesively secured to the end of the folded filter membrane (1 d) by means of a sealing structure (11).

12. A filter, including filter housing (2) and according to any one of claims 1 to 10 folding filter core (1), characterized in that, folding filter core (1) holds inside filter housing (2), filter housing (2) include barrel (2 c), first end cover (2 a) and second end cover (2 b), be equipped with liquid outlet (204) and gas vent (203) on first end cover (2 a), be equipped with inlet (201) and return port (202) on second end cover (2 b), upper end cover (1 a) of folding filter core (1) is equipped with filter core interface (106) with liquid outlet (204) and gas vent (203) intercommunication.

13. The filter according to claim 12, wherein the filter element interface (106) is provided with at least one clamping portion (102), and the filter element interface (106) is clamped and fixed with the inner side of the first end cover (2 a) through the clamping portion (102).

14. The filter according to claim 12, wherein the filter element interface (106) is provided with an annular welding portion (109), and the inner side of the first end cover (2 a) is welded and fixed with the welding portion (109) of the filter element interface (106).