CN210544420U - Cross-flow type washable folding filter element assembly - Google Patents
Cross-flow type washable folding filter element assembly Download PDFInfo
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- CN210544420U CN210544420U CN201920346116.9U CN201920346116U CN210544420U CN 210544420 U CN210544420 U CN 210544420U CN 201920346116 U CN201920346116 U CN 201920346116U CN 210544420 U CN210544420 U CN 210544420U
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Abstract
The utility model discloses a cross-flow type washable folding filter element assembly, which comprises a filter cylinder, an upper end cover, a central tube, a folding filter membrane, a lower end cover and a shell; the upper end cover and the lower end cover are respectively arranged on the upper end surface and the lower end surface of the central tube, and the shell is arranged between the upper end cover and the lower end cover; the folding filter membrane is sleeved on the outer surface of the central tube; the sealing ring is arranged at the lower part of the shell and divides a cavity formed between the filter cylinder and the shell into two parts; fluid enters a cavity formed between the filter cartridge and the shell through an inner inlet at the upper end of the shell, enters the central tube after being filtered by the folding filter membrane and flows out of an outlet, and unfiltered fluid is discharged from an inner outlet at the lower end of the shell, so that cross flow of the fluid on the surface of the filter membrane is realized, pollutants are difficult to attach to the surface of the folding filter membrane, and the service life of the filter element is prolonged; the upper end and the lower end of the folding filter membrane have the same radians as the upper end cover and the lower end cover, no dirt containing dead angle exists, and the service life and the flux of the filter element are further prolonged.
Description
Technical Field
The utility model relates to a water purification filters technical field, especially relates to a folding filter element subassembly can be washed to cross-flow.
Background
In the filtration fields of biochemical engineering, pharmacy, microelectronics, food, environmental engineering and the like, the filter element is widely used, and particularly, the folding filter element is an important part for ensuring the product quality and the product production technical level; the folding filter element is manufactured into a cylinder shape by the processes of pleating a filter medium such as a microporous membrane by a folding machine, sealing the edge of a filter material, fixing an inner core outer cover, packaging an end cover and the like, and finally a multi-fold folding filter element assembly with a higher filtering area is formed; under the pushing of pressure, the filtered fluid passes through the surface of the filtering membrane, the filtered particulate particles, macromolecular substances and the like are intercepted on the surface to form a filter cake layer, and the fluid passes through the filter cake layer and the filtering membrane to obtain purified fluid; along with accumulation of granular particles, macromolecular substances and the like on the surface of the filtering membrane, a filter cake layer is thickened continuously, membrane pores are blocked by the filtering membrane, the flux of the filtering membrane is reduced gradually until the filtering membrane cannot meet the requirement and is replaced, so that the filtering membrane is replaced frequently, and the production cost is increased.
The invention patent of application number 201710721555.9 discloses a folding filter element with pre-treatment and high dirt-holding functions, which comprises a filter element body and is characterized in that: the filter element body is formed by filling first melt-blown layers among folds of the folded filter element, and a plurality of second melt-blown layers are arranged on the outer surface of the filter element body. The defects that the folding filter element is easy to block, the service life is long, and the dirt holding capacity is weak are overcome, the high dirt holding capacity of the porous filter layer is exerted, pre-treatment is provided for high-precision filtering of the folding filter element, most pollutants are deeply filtered in the porous filter layer, and the formation of pollutants on the surface of the folding filter element is reduced; but general filtration field is multistage gradient filtration generally, and it says fundamentally that it is exactly with the compound gradient filter core of preceding stage filter core, improves folding filter core's life to a certain extent, but the pollutant still remains in the filter core the inside at last.
The invention patent of application No. 201010223897.6 discloses a high-flux and high-dirt-holding filter element, wherein a filter medium layer is provided with a plurality of arc-shaped folds, the membrane area of the filter medium layer is increased to a certain extent, and then the high-flux and high-dirt holding capacity is realized, but the dirt holding capacity is improved to a limited extent compared with that of the traditional W-shaped folded fold filter element; the two filter elements improve the dirt holding capacity to a certain extent, and the pollutants are not removed fundamentally.
The patent with the application number of 200820088521.7 discloses a large-flow cross-flow internal-pressure type folding filter element, which can realize cross flow of fluid and washing to a certain extent, but has certain defects in design, the inner side of the folding filter element is generally compacter than the outer side, on one hand, pollutants trapped on the surface of a membrane are compacter, and although the fluid can be subjected to cross flow, the fluid needs large impact force, so that the filtering membrane is easy to damage; on the other hand, the area of the inner effective membrane is compressed, and the flux of the filter element is reduced to a certain extent; simultaneously, this utility model's both ends of filter core have the dead angle, and the cross-flow can not be washed, and the pollutant that is held back at the dead angle can not washed, and then also makes the life of filter core obtain the restriction.
Therefore, there is a need for a cross-flow flushable pleated filter cartridge assembly that solves the problems of the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a realize through following technical scheme.
A cross-flow type washable folding filter element assembly is characterized by comprising a filter cylinder, an upper end cover, a central pipe, a folding filter membrane, a sealing ring, a lower end cover, an O-shaped sealing ring, a filter cylinder cover and a shell; the upper end cover and the lower end cover are respectively arranged on the upper end surface and the lower end surface of the central tube, and the shell is arranged between the upper end cover and the lower end cover; the folding filter membrane is sleeved on the outer surface of the central tube; the sealing ring is arranged at the lower part of the shell and divides a cavity formed between the filter cartridge and the shell into two parts; the filter cartridge cover is arranged at the lower part of the lower end cover, and the outer edge of the filter cartridge cover is connected with the filter cartridge through the O-shaped sealing ring.
Furthermore, the filter cylinder is a cylindrical cylinder with a closed upper end face and an open lower end; the upper part of the filter cylinder is provided with a first outer inlet, and the inner side of the lower end cylinder wall is processed with internal threads.
Furthermore, the central tube is a cylindrical tube with an open upper end surface and an open lower end surface and a plurality of square through holes uniformly distributed on the circumferential surface.
Furthermore, the upper end cover is an end cover with arc-shaped periphery, the middle part of the upper end cover is a sunken platform, and bulges extend from the periphery of the upper end cover; the middle part of the upper end cover is fixedly connected with the upper end face of the central tube, and the raised edge is firmly welded with the upper end face of the shell.
Furthermore, the lower end cover is an end cover with arc-shaped periphery, and comprises a cover body and a column body; the middle of the cover body is provided with a raised platform, through holes are processed in the middle of the cover body, the raised platform extends around in a certain radian, the raised platform is fixedly connected with the central tube, and the edge of the cover body is fixedly connected with the shell.
Furthermore, the outer surface of the column body is provided with threads, a through hole is formed in the column body, and the through hole of the protruding platform are in the same size and are concentrically arranged.
Furthermore, the folding filter membrane is folded into a shutter form by adopting a filter material and is bonded into a ring shape, and is sleeved on the outer surface of the central tube; the upper end and the lower end of the folded filter membrane are matched with the radians of the upper end cover and the lower end cover, the included angle between the upper end surface and the lower end surface of the folded filter membrane and the outer side of the folded filter membrane is 45-85 degrees, and the radians of the upper end surface and the lower end surface are pi/6-pi/4.
Preferably, the included angle between the upper end face and the lower end face of the folding filter membrane and the outer side of the folding filter membrane is preferably 60-85 degrees.
Furthermore, the filter cylinder cover is a circular end cover, and a threaded hole is formed in the center of the filter cylinder cover; the threaded hole is matched with the threads on the outer surface of the cylinder, and the lower end of the threaded hole is provided with an outer first outlet which is arranged concentrically with the threaded hole; the filter cartridge cover is provided with an outer second outlet so as to discharge unfiltered liquid; the edge of the filter cartridge cover is provided with a semicircular groove, and the O-shaped sealing ring is arranged in the semicircular groove; and the side surface of the edge of the filter cartridge cover is provided with external threads, and the external threads are matched with the internal threads of the filter cartridge.
Furthermore, the shell is a cylindrical cylinder with open upper and lower end surfaces, a plurality of square inner inlets are uniformly distributed on the upper part of the shell along the circumferential direction, a plurality of square inner outlets are uniformly distributed on the lower part of the shell along the circumferential direction, and a groove is processed on the outer surface of the shell close to the lower end; the sealing ring is arranged in the groove; the sealing ring divides a cavity formed by the filter cylinder and the shell into an upper part and a lower part.
When the filter cartridge is used, fluid with certain pressure enters the upper part of a cavity formed by the filter cartridge and the shell from an outer inlet of the filter cartridge; when the liquid level reaches the inner inlet of the shell, the fluid enters a cavity formed by the central tube, the upper end cover, the lower end cover and the shell; fluid is filtered by the folding filter membrane, enters the center tube through the square through hole on the center tube and flows out of the outer first outlet; in order to increase the filtering efficiency, a vacuum pump is connected at the outer first outlet, and negative pressure is formed in the central pipe to enable the fluid to pass through the folding filter membrane more quickly, so that the fluid is purified; fluid which does not pass through the folded filter membrane enters the lower part of a cavity formed by the filter cartridge and the shell through an inner outlet at the lower part of the shell and is discharged from an outer second outlet of the filter cartridge cover; because the upper end face and the lower end face of the folding filter membrane are arc-shaped, no flow dead point exists in the cavity, and meanwhile, fluid forms cross flow on the surface of the folding filter membrane, so that the washing of pollutants is realized while filtering, the pollutants are prevented from being attached to the surface of the folding filter membrane, and the service life of the filter element is greatly prolonged.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the utility model makes the fluid enter the cavity of the folding filter element through the inner inlet at the upper end of the shell, enters the central tube after being filtered by the folding filter element and flows out from the outlet, and the unfiltered fluid is discharged from the inner outlet at the lower end of the shell, thereby realizing the cross flow of the fluid on the surface of the filter membrane, making the pollutant difficult to attach to the surface of the folding filter element and further improving the service life of the filter element;
2. the upper end and the lower end of the middle folding filter element of the utility model have the same radian as the upper end cover and the lower end cover, so that the fluid can have no dirt-collecting dead angle in the cross flow process in the filter element, thereby effectively improving the service life and the flux of the filter element;
3. the utility model discloses well folding filter core uses a period of back, can pour into folding filter core cavity with the clear water and wash folding filter core, and the outlet discharge can be followed to the sewage that produces after the washing filter core, has further improved the life of filter core.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is a schematic view of a filter cartridge according to the present invention.
Fig. 4 is a schematic view of the lower end cap of the present invention.
Fig. 5 is an enlarged view of a portion of fig. 1A.
Fig. 6 is a schematic view of the filter cartridge cover of the present invention.
Fig. 7 is a schematic view of the housing of the present invention.
Fig. 8 is a schematic view of the liquid flow direction of the present invention.
In the figure: 1. a filter cartridge; 2. an upper end cover; 3. a central tube; 4. folding the filter membrane; 5. a seal ring; 6. a lower end cover; 7. an O-shaped sealing ring; 8. a filter cartridge cover; 9. a housing; 101. an outer inlet; 102. an internal thread; 61. a cover body; 62. a cylinder; 81. an outer first outlet 82, an outer second outlet 83, a semicircular groove 84 and a threaded hole; 85. an external thread; 91. an inner inlet; 92. an inner outlet; 93. and (4) a groove.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.
As shown in fig. 1-2, a cross-flow flushable folding filter element assembly comprises a filter cartridge 1, an upper end cover 2, a central tube 3, a folding filter membrane 4, a seal ring 5, a lower end cover 6, an O-ring seal 7, a filter cartridge cover 8 and a shell 9; the upper end cover 2 and the lower end cover 6 are respectively welded on the upper end surface and the lower end surface of the central tube 3; the shell 9 is arranged between the upper end cover 2 and the lower end cover 6, and the upper end surface and the lower end surface of the shell are respectively welded with the upper end surface 2 and the lower end cover 6 firmly; the shell 9, the upper end cover 2, the lower end cover 6 and the central tube 3 form a cavity, and the folding filter membrane 4 is sleeved on the outer surface of the central tube 3 to fill the cavity; the sealing ring 5 is arranged at the lower part of the shell 9 and divides a cavity formed between the filter cartridge 1 and the shell 9 into two parts; the filter cylinder cover 8 is installed on the lower end cover 6 through threaded connection; the filter cartridge 1 is installed on the filter cartridge cover 8 through threaded connection; the O-shaped sealing ring 7 is arranged on the end face of the outer edge of the filter cylinder cover 8, and when the filter cylinder 1 and the filter cylinder cover 8 are screwed tightly through threads, the O-shaped sealing ring 7 deforms to play a sealing role.
As shown in fig. 3, the filter cartridge 1 is a cylindrical cartridge with a closed upper end surface and an open lower end; the upper part of the filter cartridge 1 is provided with a first outer inlet 101, and the inner side of the lower end cylinder wall is provided with an internal thread 102.
The central tube 3 is a cylindrical tube with an open upper end surface and an open lower end surface and a plurality of square through holes distributed on the circumferential surface.
The upper end cover 2 is an end cover with arc-shaped periphery, a concave platform is arranged in the middle, and the periphery is convex; the middle part is firmly welded with the upper end surface of the central tube 3, and the raised edge is firmly welded with the upper end surface of the shell 9.
As shown in fig. 4, the lower end cover 6 is an end cover with an arc-shaped periphery, and includes a cover body 61 and a cylinder 62; the middle of the cover body 61 is provided with a raised platform, through holes are processed in the middle of the cover body, the periphery of the cover body is recessed, the upper surface of the middle part is firmly welded with the lower end face of the central tube 3, and the recessed edge is firmly welded with the lower end face of the shell 9; the lower surface of the middle part of the cover body 61 is welded with the column body 62; the cylindrical body 62 is threaded on the outer surface thereof and is formed with a through hole therein, which is concentric with and of the size of the through hole of the cover body 61.
The folding filter membrane 4 is folded into a shutter form by adopting a filter material, is bonded into a ring shape, and is sleeved on the outer surface of the central tube 3; the filtering material can be a single layer or multiple layers, and the number of the filtering material and the number of the layers are adjusted according to the filtering requirement of the filtrate so as to achieve the optimal filtering effect; the upper end and the lower end of the folding filter membrane 4 have the same radian as the upper end cover 2 and the lower end cover 6; as shown in FIG. 5, the included angle between the upper and lower end faces of the folded filter membrane 4 and the outer side thereof is 45-85 degrees, more preferably 60-85 degrees, and the radian of the upper and lower end faces is pi/6-pi/4.
As shown in fig. 6, the filter cartridge cover 8 is a circular end cover, and a threaded hole 84 is formed in the center of the filter cartridge cover; threaded hole 84 mates with threads on the outer surface of post 62; the lower end of the threaded hole 84 is provided with an outer first outlet 81, and the threaded hole 84 is concentric with the outer first outlet 81; an outer second outlet 82 is formed on the filter cartridge cover 8 to discharge unfiltered liquid; a semicircular groove 83 is processed on the edge of the filter cylinder cover 8, and the O-shaped sealing ring is arranged in the semicircular groove 83; the side of the edge of the filter cartridge cover 8 is provided with external threads 85, and the external threads 85 are matched with the internal threads 102 of the filter cartridge 1.
As shown in fig. 7, the housing 9 is a cylindrical tube with open upper and lower end faces, a plurality of square inner inlets 91 are uniformly distributed on the upper portion along the circumferential direction, a plurality of square inner outlets 92 are uniformly distributed on the lower portion along the circumferential direction, and the inner inlets 91 are larger than the inner outlets 92; a groove 93 is formed on the outer surface of the shell 9 close to the lower end; the sealing ring 5 is arranged in the groove 93; the seal ring 5 divides a cavity formed by the filter cartridge 1 and the shell 9 into an upper part and a lower part.
In specific use, as shown in fig. 8, a fluid with a certain pressure enters the upper part of the cavity formed by the filter cartridge 1 and the housing 9 from the outer inlet 101 of the filter cartridge 1; when the liquid level reaches the inner inlet 91 of the housing 9, the fluid enters a cavity formed by the central tube 3, the upper end cap 2, the lower end cap 6 and the housing 9; fluid enters the central tube 3 through the square through hole on the central tube 3 after being filtered by the folding filter membrane 4 and flows out of the outer first outlet 81; to increase the filtration efficiency, a vacuum pump is connected to the outer first outlet 81, and the negative pressure created in the central tube 3 causes the fluid to pass through the pleated filter membrane 4 more quickly, thereby purifying the fluid; the fluid that does not pass through the pleated filter membrane 4 enters the lower part of the chamber formed by the cartridge 1 and the housing 9 through the inner outlet 92 of the lower part of the housing 9 and is discharged from the outer second outlet 82 of the cartridge cover 8; because the upper and lower terminal surface of folding filter membrane 4 is the arc, so the inside no flow dead point of cavity, simultaneously the fluid forms the cross-flow at folding filter membrane 4 surface, has realized the washing away to the pollutant when filterable, avoids the pollutant to adhere to on folding filter membrane 4 surface, has improved the life of filter core greatly.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not depart from the essence of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A cross-flow type washable folding filter element assembly is characterized by comprising a filter cylinder (1), an upper end cover (2), a central pipe (3), a folding filter membrane (4), a sealing ring (5), a lower end cover (6), an O-shaped sealing ring (7), a filter cylinder cover (8) and a shell (9); the upper end cover (2) and the lower end cover (6) are respectively arranged on the upper end surface and the lower end surface of the central tube (3), and the shell (9) is arranged between the upper end cover (2) and the lower end cover (6); the folding filter membrane (4) is sleeved on the outer surface of the central tube (3); the sealing ring (5) is arranged at the lower part of the shell (9) and divides a cavity formed between the filter cartridge (1) and the shell (9) into two parts; the filter cylinder cover (8) is arranged at the lower part of the lower end cover (6), and the outer edge of the filter cylinder cover (8) is connected with the filter cylinder (1) through the O-shaped sealing ring (7).
2. A cross-flow flushable pleated filter element assembly according to claim 1 wherein the filter cartridge (1) is a cylindrical cartridge closed at its upper end face and open at its lower end; the upper part of the filter cylinder (1) is provided with a first outer inlet (101), and the inner side of the lower end cylinder wall is processed with an internal thread (102).
3. A cross-flow flushable pleated filter element assembly according to claim 1 wherein the central tube (3) is a cylindrical tube with open upper and lower end faces and a plurality of square through holes evenly distributed on the circumferential surface.
4. A cross-flow flushable pleated filter element assembly as claimed in claim 1 wherein the upper end cap (2) is an end cap with an arc-shaped periphery, the middle portion is a concave platform, and the periphery is extended with a protrusion; the middle part of the upper end cover (2) is fixedly connected with the upper end face of the central tube (3), and the raised edge is firmly welded with the upper end face of the shell (9).
5. A cross-flow flushable pleated filter element assembly according to claim 1 wherein the lower end cap (6) is an end cap with an arc-shaped periphery, the lower end cap (6) comprising a cap body (61) and a cylindrical body (62); the middle of the cover body (61) is provided with a through hole for processing a raised platform, the raised platform is extended around to a certain radian, the raised platform is fixedly connected with the central tube (3), and the edge of the cover body (61) is fixedly connected with the shell (9).
6. A cross-flow flushable pleated filter element assembly as claimed in claim 5 wherein the post (62) is threaded on the outer surface and has a through hole formed in the interior, the through hole being sized and concentrically with the through hole of the raised platform.
7. A cross-flow flushable pleated filter element assembly according to claim 1, characterized in that the pleated filter element (4) is folded in a louver-like manner using a filter material and is bonded in a ring shape, and is fitted over the outer surface of the central tube (3); the upper end and the lower end of the folding filter membrane (4) are matched with the radians of the upper end cover (2) and the lower end cover (6), the included angle between the upper end surface and the lower end surface of the folding filter membrane (4) and the outer side of the folding filter membrane is 45-85 degrees, and the radians of the upper end surface and the lower end surface are pi/6-pi/4.
8. A cross-flow flushable pleated filter element assembly according to claim 7, characterized in that the angle between the upper and lower end faces of the pleated filter membrane (4) and the outer side thereof is preferably 60-85 °.
9. A cross-flow flushable pleated filter cartridge assembly as claimed in claim 2 wherein the cartridge cover (8) is a circular end cap with a threaded hole (84) in its central portion; the threaded hole (84) is matched with the thread on the outer surface of the column body (62), and the lower end of the threaded hole is provided with an outer first outlet (81) which is arranged concentrically with the threaded hole; the filter cartridge cover (8) is provided with an outer second outlet (82) so as to discharge unfiltered liquid; a semicircular groove (83) is formed in the edge of the filter cylinder cover (8), and the O-shaped sealing ring is installed in the semicircular groove (83); the side face of the edge of the filter cartridge cover (8) is processed with an external thread (85), and the external thread (85) is matched with the internal thread (102) of the filter cartridge (1).
10. A cross-flow flushable pleated filter element assembly according to claim 1 wherein the housing (9) is a cylindrical tube with open upper and lower end faces, the upper portion of the cylindrical tube is circumferentially and uniformly provided with a plurality of square inner inlets (91), the lower portion of the cylindrical tube is circumferentially and uniformly provided with a plurality of square inner outlets (92), and a groove (93) is formed in the outer surface of the housing (9) near the lower end; the sealing ring (5) is arranged in the groove (93); the sealing ring (5) divides a cavity formed by the filter cartridge (1) and the shell (9) into an upper part and a lower part.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920346116.9U CN210544420U (en) | 2019-03-19 | 2019-03-19 | Cross-flow type washable folding filter element assembly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920346116.9U CN210544420U (en) | 2019-03-19 | 2019-03-19 | Cross-flow type washable folding filter element assembly |
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| CN210544420U true CN210544420U (en) | 2020-05-19 |
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| CN201920346116.9U Active CN210544420U (en) | 2019-03-19 | 2019-03-19 | Cross-flow type washable folding filter element assembly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109966926A (en) * | 2019-03-19 | 2019-07-05 | 武汉纺织大学 | A kind of flushable foldable filter element component of cross-current type |
| CN112057942A (en) * | 2020-11-16 | 2020-12-11 | 烟台贝伦环保科技有限公司 | Cross-flow type ceramic membrane filter in petrochemical field |
-
2019
- 2019-03-19 CN CN201920346116.9U patent/CN210544420U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109966926A (en) * | 2019-03-19 | 2019-07-05 | 武汉纺织大学 | A kind of flushable foldable filter element component of cross-current type |
| CN109966926B (en) * | 2019-03-19 | 2024-02-02 | 武汉纺织大学 | Cross-flow type flushable folding filter element assembly |
| CN112057942A (en) * | 2020-11-16 | 2020-12-11 | 烟台贝伦环保科技有限公司 | Cross-flow type ceramic membrane filter in petrochemical field |
| CN112057942B (en) * | 2020-11-16 | 2021-04-02 | 烟台贝伦环保科技有限公司 | Cross-flow type ceramic membrane filter in petrochemical field |
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