CN220309872U - Self-cleaning pre-filter - Google Patents

Abstract

The application relates to a self-cleaning pre-filter, which comprises a filter bottle, a filter column and a self-cleaning assembly, wherein the end part of the filter bottle is provided with a water inlet and a water outlet, and the filter column separates the water inlet from the water outlet; the self-cleaning assembly comprises an axial flow impeller, a multi-arm support, an inner cleaning piece and an outer cleaning piece, wherein the axial flow impeller is rotatably arranged in the filter bottle, the axial flow impeller and the filter column are coaxially arranged, and the axial flow impeller and the multi-arm support are coaxially fixed; the inner washing piece and the outer washing piece are fixed on the multi-arm support, and are positioned between the outer wall of the filter column and the inner wall of the filter bottle; the inner washing piece is in sliding contact with the outer wall of the filtering column, and the outer washing piece is in sliding contact with the inner wall of the filtering bottle; the end part of the filter flask, which is far away from the water inlet and the water outlet, is provided with a drain outlet, and the filter flask is provided with a drain valve. Through setting up outer washing piece and interior washing piece, realize the self-cleaning of filter flask and filter column, reduce the bacterium and breed in the filter flask, also need not frequently to pull down the filter and wash the body shell inner wall, make filter convenient to use.

Description

Self-cleaning pre-filter

Technical Field

The present application relates to the field of filters, and in particular to a self-cleaning pre-filter.

Background

Before tap water reaches each user through the pipe network, a plurality of pipelines are arranged, and impurities such as sediment, rust, suspended matters and the like exist in the pipelines, so that water pollution can be caused without filtering treatment, and diseases are easy to spread. Therefore, a pre-filter is usually adopted to filter the domestic water at the source of the domestic water, so that the quality of the domestic water is improved, and the solid impurities and viruses in the domestic water are reduced, thereby reducing the water pollution diseases.

However, after the filter is used for a certain period of time, a large amount of filter materials are adsorbed outside the filter element, and the filter materials not only easily block the filter element, but also easily grow bacteria, so that the filter needs to be disassembled to clean the filter element, and the filter is inconvenient to use.

Disclosure of Invention

To facilitate use of the filter, the present application provides a self-cleaning pre-filter.

The application provides a self-cleaning prefilter adopts following technical scheme:

the self-cleaning pre-filter comprises a filter bottle, a filter column and a self-cleaning assembly, wherein a water inlet and a water outlet are formed in two sides of one axial end of the filter bottle, the filter column separates the water inlet from the water outlet, the water inlet side of the filter column is communicated with the water inlet, and the water outlet side of the filter column is communicated with the water outlet; the self-cleaning assembly comprises an axial flow impeller, a multi-arm support, an inner cleaning part and an outer cleaning part, wherein the axial flow impeller is rotatably arranged in the filter bottle, the axial flow impeller and the filter column are coaxially arranged, and the axial flow impeller and the multi-arm support are coaxially fixed;

the inner washing piece and the outer washing piece are fixed on the multi-arm support and are positioned between the outer wall of the filter column and the inner wall of the filter bottle; the inner washing piece is in sliding contact with the outer wall of the filtering column, and the outer washing piece is in sliding contact with the inner wall of the filtering bottle; the end part of the filter bottle, which is far away from the water inlet and the water outlet, is provided with a drain outlet, and the filter bottle is provided with a drain valve for controlling the drain outlet to open and close.

Through adopting above-mentioned technical scheme, water inlet and delivery port are separated to the filter column, make water discharge from the delivery port after getting into the filter from the water inlet through the filter column filtration, when needs wash filter column outer wall and filter flask inner wall, open the blowoff valve, rivers trend axial flow impeller rotates, make many cantilever cranes rotate, wash outward on the many cantilever cranes and wash the filter flask inner wall and filter column outer wall respectively with interior washing, get rid of unnecessary impurity, realize the self-cleaning of filter flask and filter column, reduce the bacterial growth in the filter flask, also need not frequently to tear down the filter and wash body shell inner wall, make filter convenient to use.

Optionally, the outer washing piece is an outer washing adhesive tape.

Through adopting above-mentioned technical scheme, the better laminating filter flask's of interior washing adhesive tape inner wall makes the filter flask scrape and washes effectually, and the cleaning effect is good.

Optionally, the inner washing piece is an inner washing adhesive tape.

Optionally, the multi-arm support comprises a connecting column, an inner washing arm and an outer washing arm which are arranged on the connecting column, and the connecting column is coaxially fixed with the axial flow impeller; an inner washing groove for installing an inner washing adhesive tape is formed in one side, facing the filtering column, of the inner washing arm, and an outer washing groove for installing an outer washing adhesive tape is formed in the side wall, facing the inner wall of the filtering bottle, of the outer washing arm.

Optionally, the cross section of interior washing adhesive tape and outer washing adhesive tape is the T type, interior washing tank and outer washing tank are T type groove, T type groove runs through interior washing arm and outer washing arm and keeps away from the tip of spliced pole.

Through adopting above-mentioned technical scheme, interior washing adhesive tape is pegged graft from the tip that the spliced pole was kept away from to interior washing arm and is got into interior washing tank and form fixedly, and outer washing adhesive tape is pegged graft through the tip that the spliced pole was kept away from to outer washing arm and is got into outer washing tank and form fixedly, makes interior washing adhesive tape and outer washing adhesive tape simple to operate need not to use bolt or glue can accomplish fixedly.

Optionally, the end that the spliced pole was kept away from to interior arm and outer arm that washes is provided with the anticreep ring, be fixed with first T type piece and second T type piece on the anticreep ring, first T type piece interference fit joint is kept away from the end of spliced pole in interior wash tank, second T type piece interference fit joint is kept away from the end of spliced pole in outer wash tank.

Through adopting above-mentioned technical scheme, first T type piece and second T type piece peg graft respectively in the tip in wash tank and outer wash tank, carry out spacingly with interior washing adhesive tape and outer washing adhesive tape, prevent to throw away interior washing adhesive tape and outer washing adhesive tape when many cantilever cranes rotate. The first T-shaped block is connected with the second T-shaped block through square decycling, so that the first T-shaped block and the second T-shaped block are convenient to face the positions of the inner washing tank and the outer washing tank, and the first T-shaped block and the second T-shaped block are convenient to install.

Optionally, the filter bottle comprises a connector and a bottle body, the water inlet and the water outlet are arranged on the connector, the filter column is in a cylinder shape with one side open, and the end part of the filter column provided with the opening is arranged on the connector; the bottle is characterized in that a fixed cylinder for connecting the bottle body is arranged on the connector, an internal thread is arranged on the inner wall of the fixed cylinder, and the bottle body is in threaded connection with the internal thread.

Through adopting above-mentioned technical scheme, when needs are changed the filter column, because body and internal thread threaded connection make things convenient for the dismouting of body and connector, make the filter column change conveniently.

Optionally, the filter flask further comprises a mounting piece, a positioning convex ring is arranged on the inner wall of the flask body far away from the connector, a mounting cylinder is arranged on the positioning convex ring, the mounting piece comprises a positioning frame and a limiting frame, the positioning frame is abutted to the positioning convex ring, a sleeve joint ring is arranged in the center of the positioning frame, and the mounting cylinder is inserted into the sleeve joint ring to be fixedly clamped; the limiting frame covers the axial flow impeller, the limiting frame is arranged on the positioning frame, and the axial flow impeller is positioned between the limiting frame and the positioning frame; the limiting frame is provided with a perforation for the spindle of the axial flow impeller to pass through; the connecting column is coaxially fixed on the main shaft of the axial flow impeller, a convex column is coaxially arranged on one side of the connecting column, which faces the filtering column, and a positioning groove for accommodating the convex column is coaxially arranged on the filtering column.

Through adopting above-mentioned technical scheme, after connector and the split of body, assemble locating rack, axial-flow impeller, spacing and spliced pole earlier, put into the body directly, cup joint the ring outside the installation section of thick bamboo to the joint is fixed, then put into the body with the filter column again, fixed body and connector at last, make the filter equipment convenient.

Optionally, the cross-sectional area of the convex column decreases towards the direction close to the positioning groove, the end part of the convex column abuts against the groove bottom of the positioning groove, and the end part of the filtering column far away from the convex column abuts against the connecting head.

Through adopting above-mentioned technical scheme, projection tip butt constant head tank's tank bottom to support the filter column tightly on the connector, realize the fixed of filter column, when needing to change the filter column, dismantle the connector after, the filter column can directly take out to change, thereby make things convenient for the change of filter column; and because the cross section area of the convex column is reduced towards the direction close to the positioning groove, the abutting area of the convex column and the filtering column is reduced, and the convex column can rotate conveniently.

Optionally, a water outlet one-way valve for supplying water to flow out from the water outlet is arranged on the connector.

By adopting the technical scheme, the one-way valve is positioned at the water outlet of the pre-filter, and the main function is to prevent water flow from flowing reversely, so that the damage of the filter flask and other parts of the equipment caused by hot water backflow and negative pressure is avoided.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the outer washing piece and the inner washing piece, the self-cleaning of the filter bottle and the filter column is realized, bacterial breeding in the filter bottle is reduced, and the inner wall of the body shell is cleaned without frequently disassembling the filter, so that the filter is convenient to use;

2. the inner washing adhesive tape, the outer washing adhesive tape, the inner washing tank and the outer washing tank are arranged, so that the inner washing adhesive tape and the outer washing adhesive tape can be conveniently fixed;

3. through setting up locating rack, spacing and projection, make filter equipment convenient.

Drawings

Fig. 1 is a cross-sectional view of a prefilter according to an embodiment of the present application.

Fig. 2 is a cross-sectional view of a prefilter according to an embodiment of the present application.

Reference numerals illustrate: 1. a filter flask; 11. a bottle body; 111. positioning the convex ring; 12. a connector; 121. a water inlet; 122. a water outlet; 123. a fixed cylinder; 13. a mounting member; 131. a positioning frame; 1311. an abutment ring; 1312. fixing the column; 1313. a positioning rod; 132. a limiting frame; 1321. an outer limit ring; 1322. an inner limit ring; 1323. an L-shaped rod; 1324. perforating; 2. a filtration column; 3. a self-cleaning assembly; 31. an axial flow impeller; 32. a plurality of arm supports; 321. a connecting column; 3211. a convex column; 3212. a positioning groove; 322. an inner washing arm; 3221. an inner washing tank; 323. an outer wash arm; 3231. an external washing tank; 33. an inner washing piece; 331. an inner washing adhesive tape; 34. an outer washing piece; 341. washing the adhesive tape outwards; 4. a sewage outlet; 5. a blow-down valve; 6. a water outlet one-way valve; 7. anti-slip ring; 71. a first T-block; 72. a second T-block; 8. a mounting cylinder; 81. and (5) sleeving a ring.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-2.

The embodiment of the application discloses a self-cleaning prefilter. Referring to fig. 1, the self-cleaning pre-filter comprises a filter flask 1, a filter column 2 and a self-cleaning assembly 3. A water inlet 121 and a water outlet 122 are formed on two sides of one axial end of the filter flask 1. The filter flask 1 comprises a flask body 11 and a connector 12 fixed on the end part of the flask body 11, wherein a water inlet 121 and a water outlet 122 are formed in opposite sides of the connector 12, a fixing cylinder 123 is fixed on the connector 12, an inner thread is formed on the inner wall of the fixing cylinder 123, and the end part of the filter flask 1 is in threaded connection with the inner thread to form fixation.

Referring to fig. 1, the filter column 2 is in a cylindrical shape with one side open, the filter column 2 is provided with an open end toward the connector 12, and the filter column 2 separates the water inlet 121 and the water outlet 122. The water inlet side of the filter column 2 is communicated with the water inlet 121, and the water outlet side of the filter column 2 is communicated with the water outlet 122. When the filter column 2 filters, water enters the filter bottle 1 from the water inlet 121, water enters the inner side wall of the filter column 2 from the outer side wall of the filter column 2, and finally flows out from the water outlet 122.

Referring to fig. 1 and 2, the self-cleaning assembly 3 includes an axial flow impeller 31, a multi-arm support 32, an inner wash member 33, and an outer wash member 34. The axial flow impeller 31 is rotatably provided in the filter flask 1. The axial flow impeller 31 is coaxially arranged with the filter column 2, and the axial flow impeller 31 is coaxially fixed with the multi-arm frame 32.

Referring to fig. 1 and 2, the filter flask 1 further includes a mounting member 13 for mounting the axial flow impeller 31, and the mounting member 13 includes a positioning frame 131 and a stopper 132. The inner wall of the bottle body 11 far away from the connector 12 is fixedly provided with a positioning convex ring 111, and the positioning convex ring 111 is coaxial with the bottle body 11.

Referring to fig. 2, the positioning frame 131 includes an abutment ring 1311, a fixing column 1312, and a plurality of positioning rods 1313, the plurality of positioning rods 1313 are uniformly fixed at intervals in the circumferential direction of the fixing column 1312, the length direction of the positioning rods 1313 is along the radial direction of the fixing column 1312, and the end portion of the positioning rod 1313, which is far from the fixing column 1312, is fixed with the abutment ring 1311. The abutment ring 1311 abuts against a side wall of the positioning flange 111 facing the connector 12.

Referring to fig. 2, an installation cylinder 8 is coaxially fixed on the abutment ring 1311, a socket ring 81 is fixed at the center of the positioning frame 131, and the installation cylinder 8 is inserted into the socket ring 81 to be clamped and fixed.

Referring to fig. 2, the stopper 132 includes an outer stopper ring 1321, an inner stopper ring 1322, and a plurality of L-shaped rods 1323, the plurality of L-shaped rods 1323 being fixed at uniform intervals around the axial direction of the inner stopper ring 1322. The ends of the L-shaped rods 1323 remote from the inner stop collar 1322 secure the outer stop collar 1321. The abutment ring 1311 is inserted into the outer limit ring 1321, and is clamped and fixed, so that the limit frame 132 is disposed on the positioning frame 131.

Referring to fig. 2, a limiting frame 132 covers the axial flow impeller 31, the axial flow impeller 31 is positioned between the limiting frame 132 and a positioning frame 131, and the axial flow impeller 31 is rotatably connected to a fixing column 1312; the limiting frame 132 is provided with a through hole 1324 for the spindle of the axial flow impeller 31 to pass through, and the through hole 1324 is an inner ring of the inner limiting ring 1322.

Referring to fig. 1 and 2, the multi-arm support 32 includes a connection post 321, and two inner washing arms 322 and two outer washing arms 323 fixed on the connection post 321, wherein the two inner washing arms 322 and the two outer washing arms 323 are fixed on the connection post 321 at uniform intervals, and the inner washing arms 322 and the outer washing arms 323 are staggered. The inner wash arm 322 and the outer wash arm 323 are L-shaped arms, and the ends of the inner wash arm 322 and the outer wash arm 323 away from the connecting post 321 extend toward the connector 12. The connecting post 321 is fixed coaxially with the end of the spindle through which the axial flow impeller 31 passes through the through hole 1324.

Referring to fig. 1 and 2, the filter column 2 is disposed coaxially with the axial flow impeller 31, and the inner wash arm 322 and the outer wash arm 323 are disposed around the circumference of the filter column 2. The outer wash piece 34 is an outer wash strip 341 and the inner wash piece 33 is an inner wash strip 331. An inner wash tank 3221 is provided on a side of the inner wash arm 322 facing the filter column 2. The outer washing arm 323 is provided with an outer washing groove 3231 on the side wall facing the inner wall of the filter flask 1. The sections of the inner washing rubber strip 331 and the outer washing rubber strip 341 are T-shaped, and the inner washing groove 3221 and the outer washing groove 3231 are T-shaped grooves which penetrate through the ends of the inner washing arm 322 and the outer washing arm 323 far away from the connecting post 321. The inner washing rubber strip 331 is in sliding contact with the outer wall of the filter column 2, and the outer washing rubber strip 341 is in sliding contact with the inner wall of the filter bottle 1.

Referring to fig. 1 and 2, the end portions of the inner washing arm 322 and the outer washing arm 323 far from the connecting post 321 are connected with an anti-drop ring 7, a first T-shaped block 71 and a second T-shaped block 72 are fixed on the anti-drop ring 7, the first T-shaped block 71 is clamped at the end portion of the inner washing groove 3221 far from the connecting post 321 in an interference fit manner, and the second T-shaped block 72 is clamped at the end portion of the outer washing groove 3231 far from the connecting post 321 in an interference fit manner, so that the anti-drop ring 7 is fixed on the inner washing arm 322 and the outer washing arm 323.

Referring to fig. 1 and 2, a protruding column 3211 is coaxially fixed to a side of the connecting column 321 facing the filtering column 2, and a positioning groove 3212 for accommodating the protruding column 3211 is coaxially formed at an end of the filtering column 2. The cross-sectional area of the boss 3211 decreases in a direction approaching the positioning groove 3212, and the end of the boss 3211 abuts against the groove bottom of the positioning groove 3212, so that the end of the filter column 2 away from the boss 3211 abuts against the connector 12.

Referring to fig. 1, a drain outlet 4 is formed at the end of the filter flask 1 far from the water inlet 121 and the water outlet 122, and a drain valve 5 for controlling the drain outlet 4 to open and close is connected to the filter flask 1.

The connector 12 is provided with a water outlet check valve 6 for supplying water from the water outlet 122.

The implementation principle of the self-cleaning pre-filter in the embodiment of the application is as follows: when the filter filters water, the drain valve 5 is closed, the water enters the filter bottle 1 from the water inlet 121, then passes through the filter column 2 to reach the inner wall of the filter column 2, and finally is discharged from the water outlet 122.

When the filter needs to be cleaned, the drain valve 5 is opened, the water flow drives the axial flow impeller 31 to rotate, the multi-arm support 32 rotates, the inner washing adhesive tape 331 arranged on the multi-arm support 32 scrapes impurities on the outer wall of the filter column 2, the outer washing adhesive tape 341 scrapes impurities on the inner wall of the filter bottle 1, and sewage is discharged from the drain outlet 4.

In sum, through outer washing adhesive tape 341 and interior washing adhesive tape 331, realize simultaneously that filter flask 1 and filter column 2's self-cleaning reduces the interior bacterium of filter flask 1 and breeds, also need not frequently to pull down the filter and washs filter flask 1 inner wall, makes filter convenient to use.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. The utility model provides a self-cleaning prefilter, includes filter flask (1), filter column (2) and self-cleaning subassembly (3), the both sides of filter flask (1) axial one end are provided with water inlet (121) and delivery port (122), water inlet (121) and delivery port (122) are separated to filter column (2), the water inlet side intercommunication water inlet (121) of filter column (2), the water outlet side intercommunication delivery port (122) of filter column (2); the method is characterized in that: the self-cleaning assembly (3) comprises an axial flow impeller (31), a multi-arm support (32), an inner cleaning piece (33) and an outer cleaning piece (34), wherein the axial flow impeller (31) is rotatably arranged in the filter bottle (1), the axial flow impeller (31) and the filter column (2) are coaxially arranged, and the axial flow impeller (31) and the multi-arm support (32) are coaxially fixed; the inner washing piece (33) and the outer washing piece (34) are fixed on the multi-arm support (32), and the inner washing piece (33) and the outer washing piece (34) are positioned between the outer wall of the filter column (2) and the inner wall of the filter bottle (1); the inner washing piece (33) is in sliding contact with the outer wall of the filter column (2), and the outer washing piece (34) is in sliding contact with the inner wall of the filter bottle (1); the end part of the filter flask (1) far away from the water inlet (121) and the water outlet (122) is provided with a drain outlet (4), and the filter flask (1) is provided with a drain valve (5) for controlling the drain outlet (4) to open and close.

2. A self-cleaning prefilter as defined in claim 1, wherein: the outer washing piece (34) is an outer washing adhesive tape (341).

3. A self-cleaning prefilter as defined in claim 2, wherein: the inner washing piece (33) is an inner washing adhesive tape (331).

4. A self-cleaning prefilter as defined in claim 3, wherein: the multi-arm support (32) comprises a connecting post (321), and an inner washing arm (322) and an outer washing arm (323) which are arranged on the connecting post (321), wherein the connecting post (321) and the axial flow impeller (31) are coaxially fixed; an inner washing groove (3221) for installing an inner washing adhesive tape (331) is formed in one side, facing the filter column (2), of the inner washing arm (322), and an outer washing groove (3231) for installing an outer washing adhesive tape (341) is formed in the side wall, facing the inner wall, of the filter bottle (1), of the outer washing arm (323).

5. A self-cleaning prefilter as defined in claim 4, wherein: the section of interior washing adhesive tape (331) and outer washing adhesive tape (341) is T type, interior wash bowl (3221) and outer wash bowl (3231) are T type groove, T type groove runs through the tip that interior wash arm (322) and outer wash arm (323) kept away from spliced pole (321).

6. A self-cleaning prefilter as defined in claim 5, wherein: the end part of the inner washing arm (322) and the outer washing arm (323) far away from the connecting post (321) is provided with an anti-drop ring (7), a first T-shaped block (71) and a second T-shaped block (72) are fixed on the anti-drop ring (7), the end part of the inner washing groove (3221) far away from the connecting post (321) is clamped by the first T-shaped block (71) in an interference fit manner, and the end part of the outer washing groove (3231) far away from the connecting post (321) is clamped by the second T-shaped block (72) in an interference fit manner.

7. A self-cleaning prefilter as defined in claim 4, wherein: the filter bottle (1) comprises a connector (12) and a bottle body (11), the water inlet (121) and the water outlet (122) are arranged on the connector (12), the filter column (2) is in a cylinder shape with one side open, and the end part of the filter column (2) provided with the opening is arranged on the connector (12); the bottle body (11) is characterized in that a fixing cylinder (123) used for connecting the bottle body (11) is arranged on the connector (12), an internal thread is arranged on the inner wall of the fixing cylinder (123), and the bottle body (11) is in threaded connection with the internal thread.

8. A self-cleaning prefilter as defined in claim 7, wherein: the filter bottle (1) further comprises a mounting piece (13), a positioning convex ring (111) is arranged on the inner wall, far away from the connector (12), of the bottle body (11), a mounting cylinder (8) is arranged on the positioning convex ring (111), the mounting piece (13) comprises a positioning frame (131) and a limiting frame (132), the positioning frame (131) is abutted to the positioning convex ring (111), a sleeve joint ring (81) is arranged at the center of the positioning frame (131), the mounting cylinder (8) is inserted into the sleeve joint ring (81) to be fixedly clamped, the limiting frame (132) covers the axial flow impeller (31), the limiting frame (132) is arranged on the positioning frame (131), and the axial flow impeller (31) is arranged between the limiting frame (132) and the positioning frame (131); a through hole (1324) for the main shaft of the axial flow impeller (31) to pass through is formed in the limiting frame (132); the connecting post (321) is coaxially fixed on a main shaft of the axial flow impeller (31), a convex post (3211) is coaxially arranged on one side, facing the filtering post (2), of the connecting post (321), and a positioning groove (3212) for accommodating the convex post (3211) is coaxially formed in the filtering post (2).

9. A self-cleaning prefilter as defined in claim 8, wherein: the cross section area of the convex column (3211) is reduced towards the direction close to the positioning groove (3212), the end part of the convex column (3211) is abutted against the groove bottom of the positioning groove (3212), and the end part of the filtering column (2) far away from the convex column (3211) is abutted against the connecting head (12).

10. A self-cleaning prefilter as defined in claim 7, wherein: the connector (12) is provided with a water outlet one-way valve (6) for supplying water to flow out from the water outlet (122).