CN220070889U

CN220070889U - Filter element and filter comprising same

Info

Publication number: CN220070889U
Application number: CN202321693721.6U
Authority: CN
Inventors: 贾建东; 程明元; 柯文静
Original assignee: Hangzhou Cobetter Filtration Equipment Co Ltd
Current assignee: Hangzhou Cobetter Filtration Equipment Co Ltd
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2023-11-24
Anticipated expiration: 2033-06-29

Abstract

The utility model discloses a filter element and a filter formed by the same, wherein the filter element comprises a first supporting element, a second supporting element and a deep-layer filter medium, a first pressing convex rib of the first supporting element is positioned at the outer edges of two end surfaces of the first supporting element, and a second pressing convex rib is positioned at the inner edges of two end surfaces of the first supporting element close to a central channel; the third pressing ribs of the second supporting element are positioned at the outer edges of the two end faces of the second supporting element, and the fourth pressing ribs are positioned at the inner edges of the two end faces of the second supporting element close to the central channel; the third presses the protruding muscle and the first presses protruding muscle to the outer edge department of depth filter medium to form the crisscross extrusion in opposite directions to seal the outer edge of depth filter medium, and the fourth presses protruding muscle and the second presses protruding muscle to the inner edge of depth filter medium to the crisscross extrusion in opposite directions, so as to seal the inner edge of depth filter medium, and make depth filter medium be difficult for producing radial displacement relative first support element and second support element.

Description

Filter element and filter comprising same

Technical Field

The utility model relates to the technical field of filtration, in particular to a filter element and a filter formed by the same.

Background

The depth filter removes particulates, submicron particles, gums, and soluble materials using a specific medium (such as a sponge) having a thickness to remove contaminants. The fluid must travel a tortuous path to the other side and the sealing requirements for depth filtration media are high.

In US patent US8128824B2 a filtration module is disclosed which comprises at least a raw liquid discharge element, a filter medium layer, a filtrate discharge element, a filter medium layer and a raw liquid discharge element which are axially stacked on each other, and the filtrate discharge element has connection means with the raw liquid discharge elements at both axial ends thereof so that a compression seal is formed between the filter medium and the raw liquid discharge element or filtrate discharge element with each other. The raw material liquid discharge element, the filter medium layer and the filtrate discharge element form central channels at the center, and after being axially stacked, the central channels are opposite to each other. The periphery of the raw material liquid discharging element is provided with a raw material liquid inflow channel, the outer wall of the central channel of the filtrate discharging element is provided with a filtrate discharging channel, and the filtrate discharging channel is communicated with the central channel. During filtration, the raw material liquid flows into the raw material liquid inflow channel of the raw material liquid discharge element, then is dispersed on the surface of the filter medium layer, and after being filtered by the filter medium layer, the obtained filtrate is converged into the filtrate discharge channel of the filtrate discharge element, flows into the central channel and is discharged. Of course, the direction of flow of the fluid may be reversed. In order to achieve sealing of the channels and the filter medium, the feed liquid discharge element and the filtrate discharge element are provided with sealing elements corresponding to the central channel and the outer edge, respectively, the sealing elements are wedge-shaped connectors, and in the assembly process, the wedge-shaped connectors of the two feed liquid discharge elements are matched in the axial direction to continuously squeeze the filter medium layer, so that the tightness is improved.

However, the end face of the wedge-shaped connecting piece extrudes the filter medium, so that extrusion acting force is relatively dispersed and not concentrated, the extrusion acting strength is insufficient, and radial limitation is lacked, so that the end face is misplaced, the surface of the outer ring area of the filter medium and the surface of the peripheral area of the central channel of the outer ring area cannot form effective sealing, the phenomenon that filtrate and raw material liquid are mixed in the filtering process occurs, the filtering efficiency is poor finally, and the removal rate of impurities and pollutants in the filtrate is low and cannot meet the requirements of users.

Accordingly, there is a need for an improved seal structure that enables the seal structure to form an effective seal at the outer and inner edges of the filter media layer.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide a filter element and a filter formed by the filter element, wherein the extrusion sealing of the outer edge and the inner edge of a deep filtration medium is realized by utilizing the partial misplaced pressing ribs on the first support element and the second support element, and the problem that the existing filtration module cannot form effective sealing on the outer edge and the inner edge of a filtration medium layer is solved.

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

A cartridge comprising a first support element, a second support element, depth filtration media, and a central passage in the center of the cartridge;

the depth filter media is sandwiched between a first support element having a first channel in communication with one surface of the depth filter media and a second support element having a second channel in communication with the other surface of the depth filter media and the central channel;

the first supporting element is provided with a first pressing convex rib and a second pressing convex rib, the first pressing convex rib is positioned at the outer edges of the two end faces of the first supporting element, and the second pressing convex rib is positioned at the inner edges of the two end faces of the first supporting element close to the central channel;

the second supporting element is provided with a third pressing convex rib and a fourth pressing convex rib, the third pressing convex rib is positioned at the outer edges of the two end faces of the second supporting element, and the fourth pressing convex rib is positioned at the inner edges of the two end faces of the second supporting element close to the central channel;

the first pressing convex rib and the third pressing convex rib are partially staggered in the radial direction, and the second pressing convex rib and the fourth pressing convex rib are partially staggered in the radial direction;

The third pressing ribs and the first pressing ribs form opposite staggered extrusion on the outer edge of the depth filter medium so as to seal the outer edge of the depth filter medium, and the fourth pressing ribs and the second pressing ribs form opposite staggered extrusion on the inner edge of the depth filter medium so as to seal the inner edge of the depth filter medium.

According to the filter element, a deep-layer filter medium is clamped between the first supporting element and the second supporting element, the first pressing ribs of the first supporting element and the third pressing ribs of the second supporting element are respectively positioned at two axial sides of the outer edge of the deep-layer filter medium, the first pressing ribs and the third pressing ribs are partially staggered in the radial direction, so that partial areas of the outer edge of the deep-layer filter medium are limited between radial overlapped areas of the first pressing ribs and the second pressing ribs, the inner edge of the deep-layer filter medium corresponds to a central channel and is positioned at the periphery of the central channel, the second pressing ribs and the fourth pressing ribs are respectively positioned at two axial sides of the inner edge of the deep-layer filter medium, and the second pressing ribs and the fourth pressing ribs are partially staggered in the radial direction, so that partial areas of the inner edge of the deep-layer filter medium are limited between the radial overlapped areas of the second pressing ribs and the fourth pressing ribs; when the first supporting element and the second supporting element are close to each other and squeeze the deep-layer filter medium, the first pressing convex rib and the third pressing convex rib are matched with each other, radial limiting is achieved on the outer edge and the inner edge of the deep-layer filter medium, and radial displacement of the deep-layer filter medium is not easy to generate relative to the first supporting element and the second supporting element. On one hand, the radial deflection of the deep-layer filter medium caused by extrusion can be avoided without an additional limiting device so as to quickly complete the assembly of the filter element, and on the other hand, the axial extrusion acting force of the first pressing convex rib and the third pressing convex rib on the outer edge of the deep-layer filter medium and the axial extrusion acting force of the second pressing convex rib and the fourth pressing convex rib on the inner edge of the deep-layer filter medium are more concentrated, so that the sealing performance of the extruded parts of the outer edge and the inner edge of the deep-layer filter medium is improved; in addition, the first protruding muscle of pressing and the protruding muscle part dislocation set of third are pressed to the certain extent increased the total width of the region that the outward flange both ends face of depth filter media was extruded, and the second presses protruding muscle and the fourth presses protruding muscle part dislocation set to the certain extent to increase the total width of the region that the inward flange both ends face of depth filter media was extruded, avoid the extrusion effort that every group of depth filter media received too concentrated, sharp-pointed, prevent that depth filter media from being compressed, protect depth filter media, improve the holistic stable in structure of depth filter unit.

Preferably, the diameter of the outer edge of the first pressing bead is greater than the diameter of the outer edge of the third pressing bead, the diameter of the inner edge of the second pressing bead is smaller than the diameter of the inner edge of the fourth pressing bead, the first pressing bead has a part located at the radial outer side of the third pressing bead, the second pressing bead has a part located at the radial inner side of the fourth pressing bead, therefore, the first pressing bead of the first supporting element has an inward extrusion force to the outer edge of the depth filter medium, the third pressing bead of the second supporting element has an outward extrusion force to the outer edge of the depth filter medium, an outer edge extrusion sealing area formed on the depth filter medium is located at the radial inner side of the first pressing bead, and the two extrusion forces act on the outer edge extrusion sealing area simultaneously, and the same, the second pressing bead has an inward extrusion force to the inner edge of the depth filter medium, the inner edge extrusion sealing area formed on the depth filter medium is located at the radial inner side of the second pressing bead, the two extrusion sealing areas are not more beneficial to the outer edge of the second supporting element, the second pressing bead can be more firmly pressed, the second supporting element can be more stably pressed, the two extrusion sealing areas are more stably pressed, and the two opposite extrusion areas can be more firmly pressed, and the two opposite extrusion areas can be more easily pressed.

Preferably, the diameter of the outer edge of the third pressing rib is larger than the diameter of the outer edge of the first pressing rib, and the diameter of the inner edge of the fourth pressing rib is smaller than the diameter of the inner edge of the second pressing rib; the third presses protruding muscle to be located the radial outside of first protruding muscle of pressing, the fourth presses protruding muscle to be located the radial inboard of protruding muscle of second pressing, from this, the third of second support element presses protruding muscle to have inward extrusion force to the outward flange of depth filtration medium, the first of first support element presses protruding muscle to have outward extrusion force to the outward flange of depth filtration medium, the outward flange extrusion seal area that forms on depth filtration medium is located the radial inboard of third presses protruding muscle, and two extrusion forces act on outward flange extrusion seal area simultaneously, likewise, the fourth presses protruding muscle to have outward extrusion force to the inward flange of depth filtration medium, the second presses protruding muscle to have inward extrusion force to the inward flange of depth filtration medium, the inward flange extrusion seal area that forms on depth filtration medium is located the radial outside of fourth presses protruding muscle, and two extrusion forces act on inward flange extrusion seal area simultaneously, so set up first pressing protruding muscle, the second presses protruding muscle, third pressing protruding muscle and fourth press protruding muscle, not only be favorable to keeping two extrusion seal area's stable scope, the depth filtration medium's inside flange, the effect of depth filtration medium is further received the extrusion seal area, further support element is further supported to the radial offset, further can also be favorable to the filter medium is formed to the relative offset, the filter medium is further restricted.

Preferably, the first support element includes a first sealing ring located at an outer edge, the first channel radially penetrates through the first sealing ring, the first pressing ribs are formed on two axial end faces of the first sealing ring, a starting end connected with the end face of the first sealing ring faces towards a tail end, and the radial width of the first pressing ribs is gradually reduced.

The first sealing ring is of an annular structure, corresponds to the annular outer edge of the deep-layer filter medium, and is also of an annular structure, and the first pressing ribs formed on the two axial end faces of the first sealing ring can be matched with the second supporting element, so that the deep-layer filter medium on the two axial sides of the first supporting element can be respectively extruded and sealed, and the sealing effect is good; the radial width of the first pressing convex rib is gradually reduced, so that part of the first pressing convex rib is favorably embedded into the surface of the deep-layer filter medium, the deep-layer filter medium is not cracked due to too deep embedding, the end face of the first pressing convex rib is a curved surface, the extrusion sealing of the deep-layer filter medium can be realized, and the surface of the deep-layer filter medium cannot be damaged.

Preferably, first limiting portions are further arranged on two axial end faces of the first sealing ring, the first limiting portions are located on the outer radial sides of the first pressing ribs, and the axial height of the first limiting portions is higher than that of the first pressing ribs.

The first spacing portion that presses the protruding muscle and depth filter media's outward flange corresponds, and be located the radial outside that the radial outside of first protruding muscle of pressing also is located the radial outside of depth filter media's outward flange substantially, and the axial height of first spacing portion is higher than the axial height of first protruding muscle of pressing for when stacking first support element, depth filter media and second support element equipment, first spacing portion can form radial spacing to depth filter media, so that pile up depth filter media fast, accurately, be favorable to first protruding muscle and the third protruding muscle of pressing to correspond to depth filter media's outward flange and form extrusion seal to it accurately, sealed effect is better.

Preferably, the first supporting element comprises a first pressing ring positioned at the inner edge, the second pressing ribs are formed on two axial end faces of the first pressing ring, the starting ends connected with the end faces of the first pressing ring face towards the tail end direction, and the radial width of the second pressing ribs is gradually reduced.

The first pressing ring is of an annular structure, corresponds to the annular inner edge of the deep-layer filter medium, and the second pressing ribs formed on the two axial end faces of the first pressing ring are of an annular structure and can be matched with the second supporting element, so that the deep-layer filter medium on the two axial sides of the first supporting element can be respectively extruded and sealed, and the sealing effect is good; the radial width of the second pressing convex rib is gradually reduced, so that partial second pressing convex ribs are favorably embedded into the surface of the deep-layer filter medium, the deep-layer filter medium is not cracked due to too deep embedding, the end face of the second pressing convex rib is a curved surface, the extrusion sealing of the deep-layer filter medium can be realized, and the surface of the deep-layer filter medium cannot be damaged.

Preferably, the second support element includes a second seal ring at an outer edge, the third pressing bead is formed at both axial end faces of the second seal ring, and a start end connected to the end face of the second seal ring is directed toward a tip end, and a radial width of the third pressing bead is gradually reduced.

The second sealing ring is of an annular structure, corresponds to the annular outer edge of the deep-layer filter medium, and is also of an annular structure, and the third pressing ribs formed on the two axial end faces of the second sealing ring can be matched with the first supporting element, so that the deep-layer filter medium on the two axial sides of the second supporting element can be respectively extruded and sealed, and the sealing effect is good; the radial width of the third pressing convex rib is gradually reduced, so that the third pressing convex rib is beneficial to being embedded into the surface of the deep-layer filter medium, the deep-layer filter medium is not cracked due to too deep embedding, the end face of the third pressing convex rib is a curved surface, the extrusion sealing of the deep-layer filter medium can be realized, and the surface of the deep-layer filter medium cannot be damaged.

Preferably, the two axial end surfaces of the second sealing ring are further provided with second limiting parts, the second limiting parts are located at the radial outer sides of the third pressing convex ribs, and the axial height of the second limiting parts is higher than that of the third pressing convex ribs.

The third presses protruding muscle and depth filtration media's outward flange to correspond, and the second spacing portion that is located the radial outside of third and presses protruding muscle also is located the radial outside of depth filtration media's outward flange substantially, and the axial height of second spacing portion is higher than the axial height of third and presses protruding muscle for when stacking first support element, depth filtration media and second support element equipment, the second spacing portion can form radial spacing to depth filtration media, so that pile up depth filtration media fast, accurately, be favorable to first pressing protruding muscle and third to press protruding muscle to correspond the outward flange of depth filtration media accurately and form extrusion seal to it, sealed effect is better.

Preferably, the second supporting element comprises a second pressing ring located at the inner edge, the second channel radially penetrates through the second pressing ring, the fourth pressing ribs are formed on two axial end faces of the second pressing ring and gradually decrease in radial width from the starting end connected with the end face of the second pressing ring to the tail end. The second pressing ring is of an annular structure, corresponds to the annular inner edge of the deep-layer filter medium, and fourth pressing ribs formed on two axial end faces of the second pressing ring are of an annular structure, can be matched with the first supporting element, so that the deep-layer filter medium on two axial sides of the second supporting element can be respectively extruded and sealed, and the sealing effect is good; the radial width of the fourth pressing convex rib is gradually reduced, so that the part of the fourth pressing convex rib is favorably embedded into the surface of the deep-layer filter medium, the deep-layer filter medium is not cracked due to too deep embedding, the end face of the fourth pressing convex rib is a curved surface, the extrusion sealing of the deep-layer filter medium can be realized, and the surface of the deep-layer filter medium cannot be damaged.

Preferably, the outer edge of one of the first support element and the second support element is provided with a catching part, and the outer edge of the other one is provided with a clamping part; the clamping part is clamped to the capturing part so as to form an axial opposite extrusion effect between the first supporting element and the second supporting element, and further the third pressing convex ribs and the first pressing convex ribs form opposite staggered extrusion on the outer edge of the depth filter medium.

According to the filter element, the filter unit is formed by stacking the first support element, the deep layer filter medium and the second support element, when the capturing part is arranged at the outer edge of the first support element and the clamping part is arranged at the outer edge of the second support element, the capturing part of the first support element extends to the second support element at the two sides in the axial direction and is clamped with the corresponding clamping part, the deep layer filter medium is clamped in the first support element and the second support element, and the acting force of the capturing part and the clamping part is transmitted to the first pressing convex rib and the third pressing convex rib, and the first pressing convex rib and the third pressing convex rib simultaneously apply axial extrusion force to the outer edge of the deep layer filter medium, so that opposite staggered extrusion is formed, and extrusion sealing of the outer edge of the deep layer filter medium is realized; when the outer edge of the second supporting element is provided with a capturing part, and the outer edge of the first supporting element is provided with a clamping part, the capturing part of the second supporting element extends to the first supporting element on two sides in the axial direction respectively and is clamped with the corresponding clamping part, the deep layer filter medium is clamped in the first supporting element and the second supporting element, and the first pressing ribs and the third pressing ribs simultaneously apply axial extrusion force to the outer edge of the deep layer filter medium, so that opposite staggered extrusion is formed, and extrusion sealing to the outer edge of the deep layer filter medium is realized.

Preferably, a first opening is formed in the center of the first supporting element, a second opening is formed in the center of the depth filtration medium, a third opening is formed in the center of the second supporting element, and the first opening, the second opening and the third opening are aligned and communicated to form the central channel;

the filter element further comprises a center support with a plurality of through holes, the center support comprises two support split bodies, the two support split bodies are inserted into the center channel, the initial ends of the two support split bodies are sealed and abutted against the periphery of the first opening, opposite extrusion actions are generated on the first support element, the deep layer filter medium and the second support element, the tail ends of the two support split bodies are mutually clamped in the axial direction, and the fourth pressing convex ribs and the second pressing convex ribs form opposite staggered extrusion on the inner edge of the deep layer filter medium

The first support component, the deep layer filter medium, the second support component, deep layer filter medium and first support component pile up from top to bottom in proper order axial, form a filter element, a plurality of filter elements overlap and form the filter core, adjacent filter element shares a first support component, the axial both ends of filter core are first support component, and the periphery of first trompil corresponds first support component's inward flange, the periphery of second trompil corresponds deep layer filter medium's inward flange, the periphery of third trompil corresponds second support component's inward flange, consequently, the initial end of two support components of a whole that can function independently seals respectively and leans on the inward flange of first support component of filter core axial one end, and the terminal mutual joint of two support components of a whole that can function independently is in central passageway axial, apply axial opposite extrusion force to this first support component's inward flange, based on the conduction of force, deep layer filter medium and second support component's inward flange all receive opposite axial extrusion force, and then fourth press bead and second press bead all receive opposite axial extrusion force, thereby form the crisscross extrusion seal to deep layer filter medium's inward flange.

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

the filter comprises a shell, wherein the filter element is arranged in the shell in a sealing way, and the shell is of a detachable sealing structure.

The outer edges of the first support element and the second support element are clamped with each other to form axial dislocation extrusion, and meanwhile, the inner edges of the first support element and the second support element are formed into axial dislocation extrusion through a bracket split body, so that extrusion sealing is realized on the inner edge and the outer edge of the depth filtration medium, and sealing is realized on the central channel; the filter element is characterized in that a plurality of filter units form an integral filter element, the filter element is arranged on the shell in a sealing manner, the shell is sealed, specifically, a central channel of the filter element is communicated with one of a liquid inlet and a liquid outlet of the shell in a sealing manner, and a first channel or a second channel of the filter element is communicated with the other one, so that the filter can filter normally.

a filter comprising a housing having at least one filter cartridge as described above therein;

the shell comprises a first shell and a second shell which are welded into a whole, a positioning bracket is arranged in the center of the interior of the shell, the positioning bracket penetrates through the central channel, the positioning bracket is provided with a plurality of through holes, and the positioning bracket comprises a first bracket body integrally formed on the inner side of the first shell and a second bracket body integrally formed on the inner side of the second shell;

The end axial mutual joint of the first support body with the second support body, first casing with the internal surface of second casing is respectively right the filter core produces opposite extrusion effect, makes the fourth press protruding muscle with the second presses protruding muscle to the inner edge of depth filter medium forms opposite crisscross extrusion.

The filter element comprises a plurality of stacked filter units, wherein a first support element, a deep layer filter medium, a second support element, a deep layer filter medium and the first support element are sequentially stacked up and down axially to form a filter unit, the adjacent filter units share the first support element, and the outer edges of the first support element and the second support element can be mutually closed and extruded, so that partial areas of the outer edges of the deep layer filter medium are limited between radial overlapped areas of the first pressing convex ribs and the second pressing convex ribs, and limiting and sealing of the deep layer filter medium are realized; and the utility model also forms opposite extrusion acting force to the first support element, the deep filtration medium and the second support element of the filter element through the locating bracket of the central channel of the filter element, and based on force conduction, the fourth pressing convex rib and the second pressing convex rib are subjected to opposite axial extrusion force, so that staggered extrusion sealing is formed to the inner edge of the deep filtration medium, and a plurality of filtration units are assembled into an integral filter element, so that the integral filter element is stably sealed and fixed in the shell, the central channel of the filter element is communicated with one of the liquid inlet and the liquid outlet of the shell in a sealing way, and the first channel or the second channel of the filter element is communicated with the other, thus the filter can normally filter.

In summary, compared with the prior art, the utility model has at least the following beneficial effects:

in the filter element and the filter formed by the filter element in the technical scheme, the partial area of the outer edge of the depth filter medium is limited between the radial overlapped areas of the first pressing convex rib and the third pressing convex rib through the first pressing convex rib and the third pressing convex rib which are partially staggered in the radial direction, and the partial area of the inner edge of the depth filter medium is limited between the radial overlapped areas of the second pressing convex rib and the fourth pressing convex rib through the second pressing convex rib and the fourth pressing convex rib which are partially staggered in the radial direction; when the first supporting element and the second supporting element are close to each other and squeeze the deep-layer filter medium, the first pressing convex rib and the third pressing convex rib are matched with each other, radial limit is achieved on the outer edge and the inner edge of the deep-layer filter medium, and radial displacement of the deep-layer filter medium relative to the first supporting element and the second supporting element is not easy to occur, so that reliable sealing of the outer edge and the inner edge of the deep-layer filter medium is achieved.

According to the technical scheme, the total width of the extruded area of the two end faces of the outer edge of the depth filter medium is increased to a certain extent through the dislocation of the first pressing convex rib and the third pressing convex rib, the total width of the extruded area of the two end faces of the inner edge of the depth filter medium is increased to a certain extent through the dislocation of the second pressing convex rib and the fourth pressing convex rib, extrusion acting force received by each group of depth filter medium is prevented from being too concentrated and sharp, the depth filter medium is prevented from being cracked, the depth filter medium is protected, and the integral structural stability of the depth filter unit is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a filter element according to a first embodiment of the present utility model.

Fig. 2 is a schematic view of the internal structure of a filter element according to a first embodiment of the present utility model.

Fig. 3 is a schematic cross-sectional view of a filter unit according to a first embodiment of the utility model.

Fig. 4 is an enlarged view at a in fig. 3.

FIG. 5 is an enlarged view of the portion B in FIG. 3

Fig. 6 is a schematic cross-sectional view of a first supporting member according to a first embodiment of the present utility model.

Fig. 7 is an enlarged view at C in fig. 6.

Fig. 8 is an enlarged view of D in fig. 6.

Fig. 9 is a schematic cross-sectional view of a second support member according to a first embodiment of the present utility model.

Fig. 10 is an enlarged view at E in fig. 9.

Fig. 11 is an enlarged view at F in fig. 9.

Fig. 12 is a schematic structural view of a filter element according to a second embodiment of the present utility model.

Fig. 13 is a schematic view showing an internal structure of a filter cartridge according to a second embodiment of the present utility model.

Fig. 14 is a schematic cross-sectional view of a filter unit according to a second embodiment of the utility model.

Fig. 15 is an enlarged view at G in fig. 14.

Fig. 16 is a schematic view showing the structure of a filter according to a third embodiment of the present utility model.

Fig. 17 is a schematic view showing the internal structure of a filter according to a third embodiment of the present utility model.

Fig. 18 is an enlarged view of fig. 17 at I.

Fig. 19 is a schematic view showing the internal structure of a filter according to a fourth embodiment of the present utility model.

Description of the reference numerals

1. A first support element; 11. a first seal ring; 111. a first pressing rib; 112. a first channel; 113. a first limit part; 12. a first pressing ring; 121. the second presses the convex rib;

2. a second support element; 21. a second seal ring; 211. third pressing ribs; 212. a second limit part; 22. a second pressing ring; 221. fourth pressing the convex rib; 222. a second channel;

3. depth filtration media; 31. a first surface; 32. a second surface;

4. a central passage; 41. a first opening; 42. a second opening; 43. a third opening; 44. a gasket;

5. a catching section; 51. a catch ring; 52. an annular plane; 53. a conical surface; 531. a final cone section; 532. a starting cone section; 54. an annular inclined surface;

6. A clamping part; 61. a claw; 611. a main body; 612. clamping ears;

7. a center support; 71. the bracket is split; 711. a starting end; 712. a connection section; 713. a terminal; 714. a via hole;

8. a housing; 81. a first sub-shell; 811. a liquid inlet; 812. a first groove; 813. a first seal ring; 82. a second sub-shell; 821. a liquid outlet; 822. a second groove; 823. a second seal ring; 83. a cavity;

9. a housing; 91. a first housing; 911. a first bracket body; 92. a second housing; 921. and a second bracket body.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

As shown in fig. 1 to 11, the present embodiment provides a filter cartridge, including a first support element 1, a second support element 2, a depth filter medium 3, and a central channel 4 located at the center of the filter cartridge, where the first support element 1, the depth filter medium 3, the second support element 2, the depth filter medium 3, and the first support element 1 are sequentially stacked axially up and down to form a filter unit, where the first support element 1 and the second support element 2 form a clamp for the depth filter medium 3, a plurality of filter units overlap to form the filter cartridge, adjacent filter units share one first support element 1, and two axial ends of the filter cartridge are provided with one first support element 1; the centers of the stacked first support element 1, depth filter medium 3 and second support element 2 are each provided with openings which communicate in the axial direction and form a central passage 4 in the center of the filter insert. The inner edges of the first support element 1, the second support element 2 and the depth filter medium 3 correspond to the outer circumference of the central channel 4.

The depth filter media 3 is sandwiched between a first support element 1 and a second support element 2, the first support element 1 having a first channel 112 communicating with one surface of the depth filter media 3, the second support element 2 having a second channel 222 communicating with the other surface of the depth filter media 3 and with the central channel 4. For the filtering unit, the stock solution can enter the first channel 112 to contact with one surface of the depth filter medium 3 and pass through the depth filter medium 3, and the filtered filtrate enters the second channel 222 to be converged into the central channel 4 and then discharged; the stock solution can also enter the second channel 222 from the central channel 4, contact with the other surface of the depth filter medium 3 and pass through the depth filter medium 3, and the filtered filtrate enters the first channel 112 and then is gathered to the periphery of the filter element.

The outer and inner edges of the depth filter media 3 are sealed to ensure that the stock solution can only enter from one surface of the depth filter media 3, the upstream surface, and the filtrate can only exit from the other surface of the depth filter media 3, the downstream surface, and to seal the central passage 4 to prevent the stock solution from mixing with the filtrate.

As shown in fig. 3 to 5, the first support element 1 of the present embodiment has a first pressing bead 111 and a second pressing bead 121, the first pressing bead 111 being located at the outer edges of both end faces of the first support element 1, the second pressing bead 121 being located at the inner edges of both end faces of the first support element 1 near the central passage 4; the second supporting element 2 has a third pressing rib 211 and a fourth pressing rib 221, the third pressing rib 211 is positioned at the outer edges of the two end faces of the second supporting element 2, and the fourth pressing rib 221 is positioned at the inner edges of the two end faces of the second supporting element 2 close to the central channel 4; the first pressing bead 111 is partially displaced from the third pressing bead 211 in the radial direction, and the second pressing bead 121 is partially displaced from the fourth pressing bead 221 in the radial direction; the third pressing bead 211 and the first pressing bead 111 form opposite staggered extrusion on the outer edge of the depth filter medium 3 to seal the outer edge of the depth filter medium 3, and the fourth pressing bead 221 and the second pressing bead 121 form opposite staggered extrusion on the inner edge of the depth filter medium 3 to seal the inner edge of the depth filter medium 3. Here, the first pressing bead 111 and the third pressing bead 211 are partially displaced in the radial direction, that is, have a radially overlapping region and a radially displaced region; the second pressing bead 121 and the fourth pressing bead 221 are partially offset in the radial direction, which means that they have a radially overlapping region and a radially offset region.

As shown in fig. 4, the first pressing bead 111 and the third pressing bead 211 are partially offset in the radial direction, that is, the projection portions of the first pressing bead 111 and the third pressing bead 211 in the radial direction overlap and are partially offset, and the first pressing bead 111 and the third pressing bead 211 are respectively located at two axial sides of the outer edge of the depth filter medium 3, so that the partial area of the outer edge of the depth filter medium 3 is limited between the radial overlapping areas of the first pressing bead 111 and the third pressing bead 211, the first pressing bead 111 and the third pressing bead 211 are partially offset, the total width of the area where the two end surfaces of the outer edge of the depth filter medium 3 are pressed is increased on the basis of limiting the radial offset of the depth filter medium 3, and compared with the plane pressing in the prior art, the axial pressing force of the first pressing bead 111 and the second pressing bead 121 to the outer edge of the depth filter medium 3 is more concentrated, the width of the pressed area becomes larger, and the pressing force of each group of depth filter medium 3 is prevented from being too concentrated, and the deep pressing force of the depth filter medium 3 is prevented from being pressed, and the sealing performance of the outer edge of the depth filter medium 3 can be improved.

As shown in fig. 5, the second pressing bead 121 and the fourth pressing bead 221 are partially offset in the radial direction, that is, the projection portions of the second pressing bead 121 and the fourth pressing bead 221 in the radial direction overlap and are partially offset, and the second pressing bead 121 and the fourth pressing bead 221 are respectively located at two axial sides of the inner edge of the deep layer filter medium 3, so that the partial area of the inner edge of the deep layer filter medium 3 is limited between the radial overlapping areas of the second pressing bead 121 and the fourth pressing bead 221, the partial offset of the second pressing bead 121 and the fourth pressing bead 221 increases the total width of the area where the two end surfaces of the inner edge of the deep layer filter medium 3 are pressed on the basis of limiting the radial offset of the deep layer filter medium 3, and compared with the planar pressing in the prior art, the axial pressing force of the second pressing bead 121 and the fourth pressing bead 221 on the inner edge of the deep layer filter medium 3 is more concentrated, the width of the pressed area becomes larger, and the pressing force of each group of deep layer filter medium 3 is prevented from being too concentrated, and the deep layer filter medium is prevented from being pressed, and the sealing performance of the inner edge of the deep layer filter medium 3 can be improved.

The first support element 1 and the second support element 2 may be connected in various ways, and the connection between the outer edges may be the same as or different from the connection between the inner edges. In this embodiment, the outer edges of the first support element 1 and the second support element 2 are connected in a clamping manner, so as to form a clamping seal with respect to the outer edge of the depth filter medium 3.

As shown in fig. 6, the first support element 1 of the present embodiment includes a first seal ring 11 located at an outer edge and a first pressing ring 12 located at an inner edge, the first seal ring 11 and the first pressing ring 12 are connected into a whole by a support rib and a connecting rib extending radially in the middle, and the outer diameter of the first seal ring 11 is larger than the outer diameter of the depth filter medium 3, so that the first support element 1 can cover the depth filter medium 3 to form an effective clamping seal. As shown in fig. 7, the first channel 112 radially penetrates the first seal ring 11, and serves as a liquid inlet channel, communicates the outside of the filter element with the upstream surface of the depth filter medium 3, and the first pressing ribs 111 are disposed on both axial end surfaces of the first seal ring 11, and also fall into the projection range of the first channel 112. As shown in fig. 8, the first pressing ring 12 is of a solid structure, and is not capable of flowing liquid, and the first pressing ring 12 is located at the periphery of the central channel 4, so as to play a certain role in sealing the central channel 4, and the second pressing ribs 121 are disposed on two axial end faces of the first pressing ring 12 and are used for sealing corresponding to the depth filter medium 3 or other sealing structures, and the first pressing ring 12 is matched with the second pressing ribs 121 to isolate the upstream surface of the depth filter medium 3 from the central channel 4.

As shown in fig. 9, the second support element 2 of the present embodiment includes a second sealing ring 21 located at an outer edge and a second pressing ring 22 located at an inner edge, the second sealing ring 21 and the second pressing ring 22 are connected into a whole through a support member and a connecting rib extending radially in the middle, and the outer diameter of the second sealing ring 21 is larger than the outer diameter of the depth filter medium 3, so that the second support element 2 can be matched with the depth filter medium 3 to form an effective clamping seal in cooperation with the first support element 1. As shown in fig. 10, the second sealing ring 21 has a solid structure, and is not capable of flowing liquid, and the third pressing ribs 211 are disposed on two axial end surfaces of the second sealing ring 21, and can cooperate with the first sealing ring 11 and the first pressing ribs 111 thereon to realize extrusion sealing of the outer edge of the depth filter medium 3. As shown in fig. 11, the second passage 222 radially penetrates the second pressing ring 22 as a liquid outlet passage communicating the downstream surface of the depth filter medium 3 with the central passage 4, and the fourth pressing bead 221 is provided at both axial end surfaces of the second pressing ring 22, also falling within the projection range of the second passage 222.

As shown in fig. 7, first limiting portions 113 are further disposed on two axial end faces of the first seal ring 11, the first limiting portions 113 are located radially outside the first pressing ribs 111, and the axial height of the first limiting portions 113 is higher than that of the first pressing ribs 111. As shown in fig. 4, when the filter unit is assembled, the first limiting part 113 is located radially outside the outer edge of the depth filter medium 3, forms radial limitation on the depth filter medium 3, and realizes preliminary positioning of the depth filter medium 3, so that the depth filter medium 3 can be stacked quickly and accurately, and each pressing rib can be accurately abutted against an extrusion sealing area on the depth filter medium 3. As shown in fig. 2, in this embodiment, the first limiting portion 113 is in an annular structure, and is integrally formed on the upper end surface and the lower end surface of the outer edge of the first sealing ring 11, so that the structural strength of the first limiting portion 113 is higher, the limiting effect on the depth filter medium 3 is better, and one surface of the first limiting portion 113 facing the center of the first supporting element 1 is an inclined surface and is inclined towards the direction away from the center of the first supporting element 1, so that the diameter of one end of the first limiting portion 113 away from the end surface of the first sealing ring 11 is larger than the diameter of one end connected to the end surface of the first sealing ring 11, and the depth filter medium 3 is conveniently placed in the circular space formed by the first limiting portion 113 and is initially positioned.

Of course, in other embodiments, the second limiting portions 212 are further disposed on two axial end faces of the second sealing ring 21, the second limiting portions 212 are located at the radial outer sides of the third pressing ribs 211, the axial height of the second limiting portions 212 is higher than that of the third pressing ribs 211, the second limiting portions 212 are used for performing radial preliminary positioning on the depth filter medium 3, as shown in fig. 4, the second limiting portions 212 are in a block structure, located between the first limiting portions 113 and the third pressing ribs 211, the axial height of the second limiting portions 212 is higher than that of the third pressing ribs 211 and smaller than that of the first limiting portions 113, so that the second limiting portions 212 are prevented from interfering with the end faces of the first sealing ring 11, and the second limiting portions 212 are located at the radial outer sides of the outer edges of the depth filter medium 3, so that more accurate radial limiting can be formed on the depth filter medium 3. As shown in fig. 10, the second limiting portion 212 of the present embodiment has a point cone structure, and includes a plurality of limiting portions circumferentially spaced apart from each other on both axial end surfaces of the second seal ring 21, so as to limit the outer periphery of the depth filter medium 3.

In order to achieve the axial approaching of the outer edges of the first support element 1 and the second support element 2, the first seal ring 11 and the second seal ring 21 are actually clamped tightly with each other, specifically, as shown in fig. 4, fig. 7 and fig. 10, two capturing portions 5 are respectively arranged on two axial end faces of the outer edge of the first seal ring 11, the two capturing portions 5 are located on the radial outer side of the first limiting portion 113, the capturing portions 5 are capturing rings 51, the two capturing rings 51 are axially spaced from each other, the opposite faces are annular planes 52, and the opposite faces are conical faces 53, so that the cross section of the capturing rings 51 is substantially triangular. Correspondingly, the outer edge of the second sealing ring 21 is provided with a clamping part 6, and the clamping part comprises two clamping claws 61 which extend obliquely relative to the axial direction respectively; the jaw 61 includes a body 611 connected to the outer circumference of the second seal ring 21 and a catch 612 at the end of the body 611; the clamping lug 612 protrudes from the main body 611 towards the center of the second supporting element 2 and faces the center of the second supporting element 2, an included angle is formed between the clamping lug 612 and the main body 611, and the included angle is matched with the capturing part 5. The clamping lugs 612 are clamped to the annular plane 52 of the capturing ring 51 so as to generate opposite clamping action between the first sealing ring 11 and the second sealing ring 21 adjacent to the first sealing ring, and further form extrusion action on the outer edge of the depth filter medium 3 clamped between the first sealing ring and the second sealing ring, so that sealing is realized.

Preferably, the conical surface 53 of the capturing ring 51 has two conical degrees, and the included angle between the end conical section 531 located on the radial outer side and the horizontal direction is larger than the included angle between the start conical section 532 located on the radial inner side and the horizontal direction, so that the axial thickness of the capturing portion 5 is larger, and the structural strength is better.

The clamping structure is matched with the first pressing convex rib 111 and the third pressing convex rib 211, so that acting force between the clamping structures can be directly conducted to the first pressing convex rib 111 and the third pressing convex rib 211, and further extrusion sealing is formed at the outer edge of the depth filter medium 3. In this embodiment, the diameter of the outer edge of the first pressing bead 111 is larger than the diameter of the outer edge of the third pressing bead 211, the first pressing bead 111 has a portion located radially outside of the third pressing bead 211 and both have overlapped portions, the first pressing bead 111 of the first support member 1 has an inward pressing force on the outer edge of the deep filtration medium 3, the third pressing bead 211 of the second support member 2 has an outward pressing force on the outer edge of the deep filtration medium 3, the outer edge pressing seal area formed on the deep filtration medium 3 is located radially inside of the first pressing bead 111, and both pressing forces simultaneously act on the outer edge pressing seal area, while the catching part 5 is located on the first seal ring 11, the clamping part 6 is located on the second seal ring 21, when the clamping part 6 and the catching part 5 are clamped to each other, the first sealing ring 11 will generate downward and inward extrusion force to the outer edge of the depth filter medium 3 under the action of the clamping part 6, and the direction of the extrusion force of the first pressing rib 111 is the same, and the second sealing ring 21 will have upward and outward extrusion force to the outer edge of the depth filter medium 3 due to the reaction force, and the direction of the extrusion force of the third pressing rib 211 is the same, at this time, the outer edge extrusion sealing area formed on the depth filter medium 3 is located at the radial inner side of the first pressing rib 111, and both extrusion forces simultaneously act on the outer edge extrusion sealing area, the extrusion forces of the capturing part 5 and the clamping part 6 also act on the outer edge extrusion sealing area, the extrusion action of the outer edge of the depth filter medium 3 is firmer and more stable, and the deflection of the depth filter medium 3 can be further limited, thereby improving the sealing effect against the outer edge of the depth filter media 3.

Meanwhile, as shown in fig. 5, the diameter of the inner edge of the second pressing bead 121 is smaller than that of the inner edge of the fourth pressing bead 221, and the second pressing bead 121 is located radially inward of the fourth pressing bead 221. Therefore, when the first support member 1 and the second support member 2 clamp the depth filter medium 3, in addition to applying the axial extrusion force to the depth filter medium 3, the fourth pressing bead 221 of the second support member 2 has an inward extrusion force to the outer edge of the depth filter medium 3, the second pressing bead 121 has an outward extrusion force to the inner edge of the depth filter medium 3, the inner edge extrusion sealing area formed on the depth filter medium 3 is located radially outside the second pressing bead 121, and both extrusion forces simultaneously act on the inner edge extrusion sealing area, the extrusion effect to which the inner edge of the depth filter medium 3 is subjected is more firm and more stable, and the deflection of the depth filter medium 3 can be further limited, thereby improving the sealing effect to the inner edge of the depth filter medium 3.

Of course, in other embodiments, the diameter of the outer edge of the third pressing bead 211 is larger than the diameter of the outer edge of the first pressing bead 111, and the diameter of the inner edge of the fourth pressing bead 221 is smaller than the diameter of the inner edge of the second pressing bead 121; the third presses protruding muscle 211 to be located the radial outside of first protruding muscle 111 of pressing, and the fourth presses protruding muscle 221 to be located the radial inboard of second pressing protruding muscle 121, and the extrusion force that produces is concentrated respectively in the outward flange extrusion sealing area and the inward flange extrusion sealing area of deep layer filter media 3, is favorable to keeping the stable scope of two extrusion sealing areas, and the outward flange of deep layer filter media 3, the extrusion effect that the inward flange received are more firm, more stable, can also further restrict the skew of deep layer filter media 3 for deep layer filter media 3 is difficult for forming the radial offset relative first support component 1 and second support component 2, is favorable to guaranteeing the sealing performance of inside and outside extrusion region.

As shown in fig. 2, in this embodiment, the inner edges of the first support element 1 and the second support element 2 are axially moved towards and pressed against each other by means of a central support 7 of the cartridge. As is clear from the foregoing, the filter element of the present embodiment includes a plurality of stacked filter units, the centers of the first support element 1, the depth filter medium 3, and the second support element 2 in each filter unit are provided with openings, that is, the first opening 41 provided at the center of the first support element 1, the second opening 42 provided at the center of the depth filter medium 3, and the third opening 43 provided at the center of the second support element 2, the first opening 41, the second opening 42, and the third opening 43 are aligned and communicated to form a central channel 4, the central bracket 7 is disposed in the central channel 4 in a penetrating manner, and includes two bracket split bodies 71, the bracket split bodies 71 include a start end 711, a connection section 712, and a terminal end 713, the connection section 712 and the terminal end 713 are located in the central channel 4, a plurality of through holes 714 are formed on the connection section 712, and a plurality of second channels 222 are exposed in the through holes 714, so that interference of liquid flow in the connection section 712 in the central channel 4 is avoided.

The two bracket split bodies 71 are arranged along the axial direction of the filter element, the two axial ends of the filter element are both a first support element 1, a gasket 44 is arranged on the axial outer side of the first support element 1, one end surface of the gasket 44 is abutted with the second pressing convex rib 121 of the first support element 1, the other end surface is abutted with the starting end 711 of the bracket split bodies 71, the sealing of the central channel 4 at the two axial ends of the filter element is realized, and raw liquid is prevented from entering the central channel 4 and is mixed with filtrate in the central channel 4; meanwhile, the terminal ends 713 of the two bracket split bodies 71 are clamped with each other in the middle of the central channel 4, so that the clamping of the two bracket split bodies 71 is realized, the first support element 1 and the second support element 2 are further axially close to each other and pressed at the inner edge, and the inner edge of the depth filter medium 3 and the central channel 4 are sealed.

As shown in fig. 7, the radial width of the first pressing bead 111 is gradually reduced from the initial end connected to the end surface of the first sealing ring 11 toward the end for pressing and sealing with the first surface 31 of the depth filter medium 3, so that the first surface 31 needs to be partially embedded, and the radial width of the first pressing bead 111 is gradually reduced, so that the first pressing bead 111 is favorably embedded into the first surface 31 of the depth filter medium 3 without being embedded too deeply to cause the depth filter medium 3 to be fractured. In this embodiment, the end face of the first pressing rib 111 is a curved surface or an arc surface, which has uniform pressure on the depth filter medium 3, is not easy to damage the surface, and can ensure a reliable sealing effect. As shown in fig. 8, the second pressing rib 121 may have the same shape as the first pressing rib 111, and may have a cross section that is approximately conical, and the end surface may be a curved surface or an arc surface, so that the sealing effect is ensured, and the first surface 31 of the depth filter medium 3 may be also ensured to be complete.

As shown in fig. 10, the radial width of the third pressing bead 211 is gradually reduced from the initial end connected to the end surface of the third sealing ring 21 toward the end for pressing and sealing with the second surface 32 of the depth filter medium 3, so that the second surface 32 needs to be partially embedded, and the radial width of the third pressing bead 211 is gradually reduced, so that the third pressing bead 211 is advantageously embedded in the second surface 32 of the depth filter medium 3, and is not embedded too deeply to cause the depth filter medium 3 to be fractured. In this embodiment, the end face of the third pressing rib 211 is a curved surface or an arc surface, so that the pressure on the depth filter medium 3 is uniform, and the surface is not easy to be damaged. As shown in fig. 11, the fourth pressing bead 221 may have the same shape as the third pressing bead 211, and may have a cross section that is approximately conical, and the end surface may be a curved surface or an arc surface, so that the sealing effect is ensured, and the second surface 32 of the depth filter medium 3 may be also ensured to be complete.

Example two

The difference between this embodiment and the first embodiment is that the positions of the capturing portions 5 and the clamping portions 6 are interchanged, specifically, as shown in fig. 12 to 15, the capturing portions 5 are disposed at the outer edge of the second support element 2, the clamping portions 6 are disposed at the outer edge of the first support element 1, the two capturing portions 5 of the second support element 2 extend to two sides in the axial direction respectively and are clamped with the clamping portions 6 of the first support element 1 on two sides, the depth filter medium 3 is clamped between the first support element 1 and the second support element 2, and the first pressing ribs 111 and the third pressing ribs 211 apply axial extrusion force to the outer edge of the depth filter medium 3 at the same time, so that opposite staggered extrusion is formed, and extrusion sealing of the outer edge of the depth filter medium 3 is realized.

As shown in fig. 15, in this embodiment, two capturing portions 5 are respectively disposed at two axial ends of the outer edge of the second seal ring 21, two capturing portions 5 are located radially outside the third pressing rib 211, the capturing portions 5 are capturing rings 51, the two capturing rings 51 are axially spaced from each other, opposite faces thereof are annular inclined faces 54, opposite faces thereof are tapered faces 53, such that the cross section of the capturing ring 51 is substantially triangular or trapezoidal. Correspondingly, the outer edge of the first sealing ring 11 is provided with a clamping part 6, and the clamping part 6 extends to two clamping claws 61 which are respectively arranged at two axial sides of the first sealing ring 11 and form an included angle; the jaw 61 includes a body 611 connected to the outer circumference of the first seal ring 11 and a catch 612 at the end of the body 611; the clamping lug 612 extends from the main body 611 towards the center of the first support element 1 and faces the center of the first support element 1, an included angle is formed between the clamping lug 612 and the main body 611, so that when the clamping lug 612 is clamped to the annular inclined surface 54 of the capturing ring 51, the capturing ring 51 is partially embedded between the clamping lug 612 and the main body 611, so that a clamping effect is generated between the first sealing ring 11 and the second sealing ring 21 adjacent to the first sealing ring, and an extrusion effect is formed on the outer edge of the deep filtration medium 3 clamped between the clamping lug 612 and the main body 611, so that sealing is realized.

The two capturing portions 5 are respectively located at two axial sides of the first channel 112, and the main body 611 is provided with a guiding surface for guiding the stock solution to enter the first channel 112, when the first sealing ring 11 and the second sealing ring 21 are clamped with each other, the two capturing portions 5 are opened along the axial direction, so that the space of the periphery of the first channel 112 is larger, the stock solution can more easily enter between the first supporting element 1 and the depth filter medium 3 through the first channel 112, on the other hand, along with the radial outer opening of the first channel 112, the distance between the first pressing ribs 111 which are relatively close to the radial inner side of the first channel 112 and the first surface 31 of the depth filter medium 3 is closer, the extrusion force is larger, and the sealing effect is better.

Example III

As shown in fig. 16 to 18, this embodiment discloses a filter including a filter element according to the first embodiment, where the filter includes a housing 8, and is a detachable sealing structure, and includes a first sub-housing 81 and a second sub-housing 82, where the first sub-housing 81 and the second sub-housing 82 are relatively connected to form a cavity 83 for accommodating the filter element, the first sub-housing 81 is provided with a liquid inlet 811, the liquid inlet 811 is communicated with the cavity 83, and the second sub-housing 82 is provided with a liquid outlet 821, and the liquid outlet 821 is communicated with the central channel 4 of the filter element in a sealing manner. In this embodiment, the outer edges of the first support element 1 and the second support element 2 are connected to each other by a clamping connection, and the inner edges are connected into a whole by the central support 7, and since the central channel 4 is a penetrating structure, the two axial ends of the central channel 4 need to be connected with the cavity wall in a sealing manner by the central support 7 to isolate the cavity 83 from the central channel 4. Specifically, a first groove 812 is formed in the inner surface of the first sub-shell 81 corresponding to the starting end of the bracket split 71, a first sealing ring 813 is arranged between the starting end 711 of the bracket split 71 at the bottom end of the filter element and the first groove 812, and sealing connection is achieved through compression deformation of the first sealing ring 813. On the other hand, a second groove 822 is formed in the inner surface of the second sub-shell 82 around the outer periphery of the liquid outlet 821, a second sealing ring 823 is arranged between the starting end 711 of the support sub-body 71, which is located at the top end of the filter element, and the second groove 822, and sealing connection is achieved through compression deformation of the second sealing ring 823.

During filtration, the stock solution flows into the cavity 83 from the liquid inlet 811, flows to the filter element, gradually wets the deep-layer filter medium 3, enters the unit, flows into the central channel 4, and finally flows out from the liquid outlet 821.

Other structures of the filter element in this embodiment are as in the embodiment, and are not described herein.

Example IV

As shown in fig. 19, the filter cartridge of the present embodiment differs from that of the first embodiment in that the filter cartridge of the present embodiment does not include the center support 7. Specifically, the filter of this embodiment includes the shell 9, and the shell 9 includes first casing 91 and the second casing 92 that weld into an organic whole, and first casing 91 and second casing 92 relatively form holding chamber 83, and the filter core is located holding chamber 83, is equipped with inlet 811 on the first casing 91, and inlet 811 communicates with holding chamber 83, is equipped with outlet 821 on the second casing 92, and outlet 821 and the central passageway 4 of filter core are sealed to be linked together. In this embodiment, the outer edges of the first support element 1 and the second support element 2 are connected to each other by means of a snap fit, while the inner center of the housing 9 is provided with a positioning bracket which extends through the central channel 4 and applies an axial compression force to the inner edges of the first support element 1 and the second support element 2. Specifically, the positioning bracket has a plurality of through holes 714, and includes a first bracket body 911 integrally formed on the inner side of the first housing 91 and a second bracket body 921 integrally formed on the inner side of the second housing 92, both ends of the filter element in the axial direction are both a first support element 1, a gasket 44 is disposed on the outer side of the first support element 1 in the axial direction, the gasket 44 near the top end of the filter element has one end face abutting against the second pressing rib 121 of the first support element 1, the other end face abutting against the inner surface of the second housing 92, the gasket 44 near the bottom end of the filter element has one end face abutting against the second pressing rib 121 of the first support element 1, and the other end face abutting against the inner surface of the first housing 91, and meanwhile, the terminal ends 713 of the first bracket body 911 and the second bracket body 921 are clamped to each other in the middle of the central channel 4 in the same clamping manner as the terminal ends 713 of the two bracket split bodies 71 in the first embodiment, which will not be described here.

The assembly process of the filter of this embodiment can be expressed as follows: the filter element with the clamped outer edge is placed in the first shell 91, the first support body 911 penetrates into the central channel 4, the inner surface of the first shell 91 is abutted with the gasket 44 close to the bottom end of the filter element, the second shell 92 is covered, the second support body 921 penetrates into the central channel 4 and is clamped with the first support body 911, and the opposite surfaces of the first shell 91 and the second shell 92 are welded and fixed to form a sealed containing cavity 83.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims

1. A cartridge comprising a first support element, a second support element, depth filtration media, and a central passage in the center of the cartridge;

the depth filter media is sandwiched between a first support element having a first channel in communication with one surface of the depth filter media and a second support element having a second channel in communication with the other surface of the depth filter media and the central channel; the method is characterized in that:

2. A filter cartridge as recited in claim 1, wherein:

The diameter of the outer edge of the first pressing convex rib is larger than that of the outer edge of the third pressing convex rib, and the diameter of the inner edge of the second pressing convex rib is smaller than that of the inner edge of the fourth pressing convex rib; or,

the diameter of the outer edge of the third pressing convex rib is larger than that of the outer edge of the first pressing convex rib, and the diameter of the inner edge of the fourth pressing convex rib is smaller than that of the inner edge of the second pressing convex rib.

3. A filter cartridge according to claim 1 or 2, wherein: the first supporting element comprises a first sealing ring positioned at the outer edge, the first channel radially penetrates through the first sealing ring, the first pressing ribs are formed on two axial end faces of the first sealing ring, the starting ends connected with the end faces of the first sealing ring face towards the tail end, and the radial width of the first pressing ribs is gradually reduced;

or, the two axial end surfaces of the first sealing ring are also provided with first limiting parts, the first limiting parts are positioned on the radial outer sides of the first pressing convex ribs, and the axial heights of the first limiting parts are higher than those of the first pressing convex ribs.

4. A filter cartridge as recited in claim 3, wherein: the first support element comprises a first pressing ring positioned at the inner edge, the second pressing ribs are formed on two axial end faces of the first pressing ring, the starting end connected with the end face of the first pressing ring faces the tail end direction, and the radial width of the second pressing ribs is gradually reduced.

5. A filter cartridge as recited in claim 3, wherein: the second supporting element comprises a second sealing ring positioned at the outer edge, the third pressing convex ribs are formed on two axial end faces of the second sealing ring, the initial ends of the third pressing convex ribs connected with the end faces of the second sealing ring face towards the tail end direction, and the radial width of the third pressing convex ribs is gradually reduced;

or, the two axial end surfaces of the second sealing ring are also provided with second limiting parts, the second limiting parts are positioned at the radial outer sides of the third pressing convex ribs, and the axial heights of the second limiting parts are higher than those of the third pressing convex ribs.

6. The filter cartridge of claim 5, wherein: the second support element comprises a second pressing ring positioned at the inner edge, the second channel radially penetrates through the second pressing ring, the fourth pressing ribs are formed on two axial end faces of the second pressing ring, the starting ends of the fourth pressing ribs connected with the end faces of the second pressing ring face towards the tail end, and the radial width of the fourth pressing ribs is gradually reduced.

7. A filter cartridge according to claim 1 or 2, wherein: the outer edge of one of the first supporting element and the second supporting element is provided with a capturing part, and the outer edge of the other one is provided with a clamping part; the clamping part is clamped to the capturing part so as to form an axial opposite extrusion effect between the first supporting element and the second supporting element, and further the third pressing convex ribs and the first pressing convex ribs form opposite staggered extrusion on the outer edge of the depth filter medium.

8. The filter cartridge of claim 7, wherein a first aperture is provided in a center of the first support member, a second aperture is provided in a center of the depth filter media, a third aperture is provided in a center of the second support member, and the first aperture, the second aperture, and the third aperture are in aligned communication to form the central passage;

the filter element further comprises a center support with a plurality of through holes, the center support comprises two support split bodies, the two support split bodies are inserted into the center channel, the initial ends of the two support split bodies are sealed and abutted against the periphery of the first opening, opposite extrusion actions are generated on the first support element, the deep filtration medium and the second support element, the tail ends of the two support split bodies are axially clamped with each other, and accordingly the fourth pressing ribs and the second pressing ribs form opposite staggered extrusion on the inner edge of the deep filtration medium.

9. A filter comprising a housing, wherein the cartridge of claim 8 is sealingly mounted within the housing, and wherein the housing is a removable seal.

10. A filter comprising a housing, wherein the housing has at least one cartridge according to any one of claims 1 to 7 therein;