CN216223184U

CN216223184U - Back flush filter

Info

Publication number: CN216223184U
Application number: CN202122777953.7U
Authority: CN
Inventors: 辜胜涛
Original assignee: Taizhou Zhetao Water Control Technology Co ltd
Current assignee: Taizhou Zhetao Water Control Technology Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-04-08
Anticipated expiration: 2031-11-10

Abstract

The utility model discloses a backwashing filter, which relates to the technical field of pipeline water purification equipment, and adopts the technical scheme that: the sewage draining device comprises a body, a sewage draining component, a filter element and an adjusting part, wherein a raw water cavity is arranged in the body, a water inlet flow passage, a water outlet flow passage and a sewage draining outlet are arranged outside the body, the water inlet flow passage and the sewage draining outlet are communicated with the raw water cavity, and the sewage draining component is arranged in the sewage draining outlet and can control the opening and closing of the sewage draining outlet; the filter element is arranged in the raw water cavity, a water purification cavity communicated with the water outlet flow channel is arranged in the filter element, and water flow in the raw water cavity passes through the filter element and then enters the water purification cavity; the raw water cavity is communicated with the water purification cavity through a first switching hole, and the regulating piece is arranged in the raw water cavity in a sliding mode and can open or seal the first switching hole; after the drain is opened, the adjusting part can be driven to slide by water flow in the raw water cavity, so that the adjusting part can be switched to the first hole to be opened. The switching of filtration, back flush state can be realized to the blowdown subassembly only need be opened and close to the user, and it is convenient to use.

Description

Back flush filter

Technical Field

The utility model relates to the technical field of pipeline water purification equipment, in particular to a backwashing filter.

Background

The pre-filter is also called as a filter, belongs to a main pipeline water quality purification product, is arranged on a water pipe from a water meter to the position in front of a first household water outlet faucet, can ensure that impurities in a water supply pipe network cannot cause harm to a human body, and plays a pre-protection role in indoor wading equipment (such as a water softener, a water purifier, a water purification machine, a direct drinking machine and the like).

After the pre-filter is used, impurities filtered in raw water are collected in the pre-filter, and when the impurities are accumulated more, the pre-filter needs to be cleaned to ensure the filtering effect of the pre-filter; the backwashing prefilter is one of the prefilters, realizes the reversal of water flow by manually or automatically adjusting a reversing multi-way valve arranged on the filter, enables the raw water flow to flow from the pure water side of a filter screen to the raw water side, achieves the aim of backwashing, permeates granular impurities such as silt, rust and the like from the inner wall to the outer wall, and finally is discharged.

The applicant finds that the common backwashing prefilter in the prior art is complex in backwashing state switching, needs more user intervention, and is inconvenient for users to use.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a backwashing filter which has the advantage of convenience in use.

The technical purpose of the utility model is realized by the following technical scheme: a backwashing filter comprises a body, a sewage discharge assembly, a filter element and an adjusting piece, wherein a raw water cavity is arranged in the body, a water inlet flow channel, a water outlet flow channel and a sewage discharge outlet are arranged outside the body, the water inlet flow channel and the sewage discharge outlet are communicated with the raw water cavity, and the sewage discharge assembly is arranged in the sewage discharge outlet and can control the opening and closing of the sewage discharge outlet; the filter element is arranged in the raw water cavity, a water purification cavity communicated with the water outlet flow channel is arranged in the filter element, and water flow in the raw water cavity passes through the filter element and then enters the water purification cavity; the raw water cavity is communicated with the purified water cavity through a first switching hole, and the adjusting piece is arranged in the raw water cavity in a sliding mode and can open or seal the first switching hole; after the sewage draining port is opened, the water flow in the raw water cavity can drive the adjusting piece to slide, so that the adjusting piece can open the first switching hole.

By the technical scheme, the filter is arranged in a waterway pipe network; under a normal filtering state, the pollution discharge assembly is closed, raw water (to be filtered) enters the raw water cavity from the water inlet flow channel, the switching hole I is sealed by the water flow driving adjusting piece rising in the raw water cavity after the raw water cavity is fully collected, then the raw water passes through the filter element and enters the water purifying cavity to become purified water (filtered water), and the purified water is discharged through the water outlet flow channel to realize the filtering of the raw water; impurity that mix with in the raw water then is intercepted in the raw water intracavity by the filter core, and the impurity in the raw water intracavity can increase along with the live time of filter core, treats that impurity is when more, and the user opens the blowdown subassembly, and this filter gets into the back flush state: impurity in the former water cavity and the mixed liquid of raw water are discharged from the drain, lead to the rivers in the former water cavity to flow to the drain direction, the regulating part is along with the rivers downstream that flow, and simultaneously, rivers in the runner of intaking also slide downwards at the drive regulating part, make switching hole one with runner of intaking and water purification chamber intercommunication, rivers in the runner of intaking then directly get into the water purification intracavity, make rivers in the water purification intracavity flow to former water cavity, impurity on the filter core then is washed into former water cavity by reverse flow's rivers, the back flush of this filter is switched and is accomplished, the user only need open and close the blowdown subassembly and can realize filtering, the switching of back flush state, it is convenient to use.

Preferably, the adjusting part is provided with a partition part, and after the sewage outlet is opened, the partition part can separate the raw water cavity from the water inlet flow passage.

Through above-mentioned technical scheme, the back is opened to the blowdown subassembly, and the drain intercommunication is external, and this filter gets into back flush state, and simultaneously, the wall separates former water cavity and water inlet channel for the interior raw water of water inlet channel is whole to get into the water purification intracavity, improves the cleaning performance of filter core.

Preferably, the adjusting part comprises an adjusting seat, and the adjusting seat can float on the water surface and slide along the length direction of the filter element.

Through above-mentioned technical scheme, the rivers drive of the flow in the former water cavity is adjusted the seat and is slided, has further improved the convenience that this filter used.

Preferably, the adjusting seat is provided with a sliding table which can slide in the water outlet flow channel and separate the water purifying cavity from the water outlet flow channel; after the switching hole is opened by the adjusting seat, the sliding table separates the water purifying cavity from the water outlet runner; and after the switching hole I is sealed by the adjusting seat, the water purifying cavity is communicated with the water outlet flow channel.

Through the technical scheme, after the sewage discharge assembly is opened, all water flow in the raw water cavity flows downwards and drives the adjusting seat to move downwards, and the water flow in the water inlet flow channel further drives the adjusting piece to slide downwards, so that the first switching hole can be opened; meanwhile, the sliding table synchronously slides downwards along with the adjusting seat, namely the sliding table moves downwards to separate the water purifying cavity from the water outlet channel, so that raw water in the water inlet channel cannot flow out of the water outlet channel after passing through the first switching hole and entering the water purifying cavity, and the water outlet channel is prevented from being polluted by the raw water. After the blowdown subassembly is closed, rivers in the former water cavity get into the water purification intracavity, and the former water in the former water cavity has enough buoyancy drive and adjusts the seat and shift up, and the water purification in the water purification intracavity upwards flows and drive the slip table and shift up, leads to adjusting seat, slip table and shift up in step, and switches the hole one and is adjusted the seat and seal, water purification chamber and water outlet flow way intercommunication, and the water purification in the water purification intracavity is then discharged through the water outlet flow way, and the filtration state switches the completion. In addition, even adjust the seat card in former water cavity, the water purification that the water purification intracavity upwards flows also can promote the slip table and shift up to guarantee the normal of adjusting the seat and reset, adjust the stability of seat work higher.

Preferably, the adjusting seat is provided with a supporting part, the supporting part is arranged in the first switching hole in a sliding mode, and the sliding table is connected with the supporting part.

Through above-mentioned technical scheme, the slip table passes through the supporting part with adjusting the seat and is connected, and the supporting part slides and sets up in switching hole one, has guaranteed the fixed of the stroke of sliding of adjusting the seat.

Preferably, the adjusting seat has a closed cavity therein.

Through the technical scheme, the cavity is arranged, so that the adjusting seat can float on the water surface easily; in addition, under the freezing condition, if the raw water in the raw water cavity is frozen, the raw water with expanded volume can firstly extrude the cavity, so that the cavity is deformed, the body is prevented from being burst after the raw water is frozen, namely, the cavity can provide expanded release space for the frozen raw water, and the body is effectively prevented from being burst.

Preferably, the adjusting seat is provided with a switching hole II, the switching hole II can be communicated with the switching hole I, and the adjusting seat is provided with an intercepting net for covering the switching hole II.

Through the technical scheme, raw water in the water inlet flow channel can enter the first switching hole and the raw water cavity only after passing through the interception net, and under the back flushing state, larger impurities in the raw water are intercepted by the interception net and cannot enter the water purification cavity, so that the cleanness of the water purification cavity is ensured.

Preferably, the body includes joint and filter bowl, the joint with the filter bowl is connected, have the connecting seat in the joint, the connecting seat with the filter core is connected, go out the water runner extend to in the connecting seat and with water purification chamber intercommunication.

By the technical scheme, the joint and the filter bowl can be independently processed and assembled, so that the production is convenient; the filter core is connected with the connecting seat, and the stable intercommunication of water outlet flow channel and water purification chamber has been guaranteed.

Preferably, a limiting ring is arranged in the filter bowl, and the limiting ring can axially limit the partition part.

Through the technical scheme, the downward flowing water flow in the raw water cavity drives the adjusting seat to move downwards, so that the partition part is contacted with the limiting ring and partitions the raw water cavity and the water inlet flow passage.

Preferably, the filter core includes skeleton, filter screen and connecting pipe, the skeleton with the connecting pipe is connected, the filter screen set up in the skeleton outside, the connecting pipe with this body coupling, have in the connecting pipe will the water purification chamber with the centre bore of play water flow way intercommunication, switch the first division of hole in locate on the skeleton, just the slip table can with the centre bore covers and opens.

Through the technical scheme, the supporting part is arranged in the first switching hole, the framework is connected with the connecting pipe, and the sliding table is connected with the supporting part, so that the mounting mode is convenient; raw water in the raw water cavity passes through the filter screen and enters the water purification cavity to become purified water; after the sliding table moves downwards, the connecting pipe can be covered, and the linkage mode is reasonable.

Preferably, the lower extreme of skeleton has the through-hole, the filter screen will the through-hole covers.

Through the technical scheme, the through holes are formed, so that the area of raw water entering the water purification cavity is effectively increased, and the filtering efficiency of the filter element is ensured; in addition, the efficiency of discharging the purified water from the water purifying cavity is facilitated, and the back washing effect is improved.

In summary, compared with the prior art, the beneficial effects of the utility model are as follows: the switching between the filtering state and the backwashing state can be realized by a user only by opening and closing the sewage discharge assembly, and the use is convenient; after the adjusting seat moves downwards to open the switching hole, the partition part partitions the water inlet flow channel from the raw water cavity, so that raw water can completely enter the water purification cavity, and the cleaning effect of the filter element is better; after the adjusting seat moves downwards to open the switching hole I, the sliding table separates the water purifying cavity from the water outlet runner, so that the cleanness of the water outlet runner is ensured; the interception net filters the raw water entering the water purification cavity, and the cleanness of the water purification cavity is ensured.

Drawings

FIG. 1 is a schematic view of a full-section structure of a body according to a first embodiment;

FIG. 2 is a schematic external structural view according to the first embodiment;

FIG. 3 is a schematic diagram of a filtering state according to an embodiment;

FIG. 4 is a schematic structural view showing a backwashing state according to the embodiment (the direction of the arrow is the direction of water flow movement);

FIG. 5 is an exploded view of the filter element and the adjustment seat according to the first embodiment;

FIG. 6 is a schematic view of the full cross-section of FIG. 5;

FIG. 7 is a schematic view of a full-section structure of an adjusting seat according to a first embodiment;

FIG. 8 is another schematic cross-sectional view of the adjustment seat according to the first embodiment;

FIG. 9 is a schematic partial sectional view illustrating a slide table according to the first embodiment, which is mainly used for illustrating the position of the slide table in the filtering state;

FIG. 10 is a schematic sectional view of a part of the first embodiment, which is mainly used for illustrating the position of the sliding table in the backwashing state;

fig. 11 is a schematic full-section structural view of the second embodiment, which is mainly used for showing the structure of the stop collar (the arrow direction is the water flow direction).

Reference numerals: 100. a body; 110. a joint; 111. a water inlet flow channel; 112. a water outlet flow channel; 120. a filter bowl; 121. a sewage draining outlet; 122. a limiting ring; 1221. a guide slope; 130. a raw water cavity; 140. a connecting seat;

200. a blowdown assembly;

300. a filter element; 310. a framework; 311. a first switching hole; 312. a through hole; 320. filtering with a screen; 330. a connecting pipe; 331. a central bore; 340. a water purifying cavity;

400. an adjustment member; 410. an adjusting seat; 411. a partition part; 412. a support portion; 413. a cavity; 414. a second switching hole; 415. an intercepting net; 420. a sliding table;

500. and cleaning the assembly.

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

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

A backwashing filter is shown in figures 1 to 10 and comprises a body 100, a sewage discharge assembly 200, a filter element 300 and an adjusting piece 400, wherein a raw water cavity 130 is arranged in the body 100, a water inlet flow passage 111, a water outlet flow passage 112 and a sewage discharge outlet 121 are arranged outside the body 100, the water inlet flow passage 111 and the sewage discharge outlet 121 are both communicated with the raw water cavity 130, the sewage discharge outlet 121 can communicate the raw water cavity 130 with the outside, and the sewage discharge assembly 200 is arranged in the sewage discharge outlet 121 and can control the opening and closing of the sewage discharge outlet 121; the filter element 300 is arranged in the raw water cavity 130, the filter element 300 is internally provided with a purified water cavity 340 communicated with the water outlet flow channel 112, and water flow in the raw water cavity 130 passes through the filter element 300 and then enters the purified water cavity 340 to become purified water; the raw water cavity 130 is communicated with the purified water cavity 340 through a first switching hole 311, and the regulating piece 400 is arranged in the raw water cavity 130 in a sliding mode and can open or seal the first switching hole 311; after the sewage outlet 121 is opened, the water flow in the raw water cavity 130 can drive the adjusting piece 400 to slide, so that the adjusting piece 400 opens the first switching hole 311; after the sewage draining outlet 121 is closed, the water flow in the raw water cavity 130 can drive the adjusting piece 400 to slide, so that the adjusting piece 400 closes the first switching hole 311.

The adjusting member 400 includes an adjusting seat 410, and the adjusting seat 410 can float on the water surface and slide along the length direction of the filter element 300.

The adjusting seat 410 is provided with a sliding table 420, the sliding table 420 can slide in the water outlet flow passage 112, and the water purifying cavity 340 is isolated from the water outlet flow passage 112; after the first switching hole 311 is opened by the adjusting seat 410, the sliding table 420 separates the water purifying cavity 340 from the water outlet runner 112; after the switching hole one 311 is sealed by the adjusting seat 410, the purified water cavity 340 is communicated with the water outlet flow channel 112.

Further, the adjusting base 410 has a supporting portion 412 thereon, the supporting portion 412 is slidably disposed in the first switching hole 311, and the sliding table 420 is connected to the supporting portion 412.

The adjustment seat 410 has a sealed cavity 413 therein. Alternatively, the density of the material of the adjusting seat 410 is less than that of water, or the adjusting seat 410 is provided with a material capable of floating on the water surface, so long as the adjusting seat 410 can float on the water surface and slide along the length direction of the filter element 300. In addition, the material of the adjusting seat 410 has a deformation property, so that raw water frozen in the raw water cavity 130 is prevented from compressing the cavity 413 first, and the frozen raw water is prevented from bursting the body 100.

The upper end of the adjusting seat 410 is provided with a second switching hole 414, the second switching hole 414 can be communicated with the first switching hole 311, and the adjusting seat 410 is provided with a blocking net 415 for covering the second switching hole 414. As shown in fig. 7 to 8, the blocking net 415 may be disposed outside or inside the adjusting seat 410, as long as the blocking net 415 covers the second switching hole 414. Alternatively, the blocking screen 415 may be disposed on the filter element 300, such that the blocking screen 415 covers the first switching hole 311.

The body 100 comprises a connector 110 and a filter bowl 120, the connector 110 is detachably connected with the filter bowl 120, a connecting seat 140 is arranged in the connector 110, the connecting seat 140 is connected with the filter element 300, and the connecting part of the connecting seat 140 and the filter element 300 can axially limit the position of the adjusting seat 410; the water inlet channel 111 and the water outlet channel 112 are arranged on the joint 110 at intervals, the water outlet channel 112 extends into the connecting seat 140 and is communicated with the purified water cavity 340, and the sewage outlet 121 is arranged at the bottom of the filter cup 120.

The outer side of the adjusting seat 410 is provided with a partition 411, and after the sewage outlet 121 is opened, the partition 411 can separate the raw water cavity 130 from the water inlet channel 111. Specifically, the partition 411 can abut against the inner wall of the filter bowl 120, so that the raw water chamber 130 is partitioned from the water inlet channel 111.

Preferably, the filter element 300 includes a frame 310, a filter screen 320 and a connecting pipe 330, the frame 310 is connected to the connecting pipe 330, the filter screen 320 is disposed outside the frame 310, the connecting pipe 330 is detachably connected to the connecting base 140, the connecting pipe 330 has a central hole 331 communicating the clean water chamber 340 with the water outlet flow passage 112, the switching hole one 311 is opened at the upper end of the frame 310, and the sliding table 420 can cover and open the central hole 331 in the connecting pipe 330. It should be noted that the first switching hole 311 may also be opened on the joint 110 or the connecting pipe 330, as long as the first switching hole 311 can communicate with the second switching hole 414, and the support part 412 can slide.

Further, the frame 310 has a through hole 312 at a lower end thereof, and the through hole 312 is covered by a screen 320.

To ensure the cleaning effect of the filter element 300, a cleaning assembly 500, which is common in the prior art, may be disposed in the raw water chamber 130, for example: a pre-filter valve (CN 212914722U) or a pre-filter scraper (CN 204275635U).

The waste assembly 200 may be a conventional waste valve, a stop valve, an angle valve, etc.

The working principle is as follows:

the joint 110 is arranged on a household tap water pipe; under the normal filtering state, the sewage discharging assembly 200 is in a closed state, raw water (to-be-filtered water) enters the raw water cavity 130 from the water inlet flow channel 111, after the raw water cavity 130 is full, the ascending water flow in the raw water cavity 130 drives the adjusting seat 410 to move upwards and seals the switching hole one 311, the adjusting seat 410 is limited by the connecting seat 140, then the raw water passes through the filter screen 320 and enters the water purifying cavity 340 to become purified water (filtered water), and finally the purified water is discharged through the water outlet flow channel 112, so that the raw water is filtered;

impurity that mix with in the raw water then is intercepted in raw water chamber 130 by filter screen 320, and impurity in raw water chamber 130 can increase along with filter core 300's live time, treats impurity when more, and the user opens blowdown subassembly 200 for drain 121 communicates the external world, and this filter gets into the back flush state: the mixed liquid of impurities in the raw water cavity 130 and raw water is discharged from the sewage outlet 121, the downward flowing water flow in the raw water cavity 130 drives the adjusting seat 410 to move downwards, the downward flowing water flow in the water inlet flow channel 111 impacts the adjusting seat 410, the adjusting seat 410 is further driven to slide downwards and open the first switching hole 311, after the adjusting seat 410 moves downwards and is abutted against the inner wall of the filter cup 120, the adjusting seat 410 stops moving downwards, at the moment, the raw water cavity 130 and the water inlet flow channel 111 are separated by a partition 411, the first switching hole 311 is communicated with the second switching hole 414, and the purified water cavity 340 and the water outlet flow channel 112 are separated by the sliding table 420;

the water flow in the water inlet flow channel 111 can only pass through the interception net 415 and enter the water purification cavity 340 through the second switching hole 414 and the first switching hole 311, so that the water flow in the water purification cavity 340 flows out towards the raw water cavity 130, the impurities on the filter element 300 are flushed into the raw water cavity 130 by the water flow flowing in the reverse direction and discharged through the sewage outlet 121, and the back washing of the filter is realized.

After the preset time of backwashing, the sewage discharging assembly 200 is closed (the sewage discharging port 121 is closed), because the water inlet flow channel 111 is always feeding water, the water flow in the raw water cavity 130 can only pass through the filter screen 320 to enter the purified water cavity 340, at the moment, the raw water in the raw water cavity 130 has enough buoyancy to drive the adjusting seat 410 to move upwards, and the purified water in the purified water cavity 340 flows upwards and drives the sliding table 420 to move upwards, namely, the adjusting seat 410 and the sliding table 420 move upwards synchronously, after the adjusting seat 410 is attached to the connecting seat 140, the raw water cavity 130 is communicated with the water inlet flow channel 111, the switching hole one 311 is sealed by the adjusting seat 410, the purified water cavity 340 is communicated with the water outlet flow channel 112, and the purified water in the purified water cavity 340 is discharged through the water outlet flow channel 112; in addition, even if the adjusting seat 410 is clamped in the raw water cavity 130, the upward flowing purified water in the purified water cavity 340 can also push the sliding table 420 to move upwards, so that the normal resetting of the adjusting seat 410 is ensured, and the filtering state of the filter is switched to be finished and enters a normal filtering state.

The switching of the filtering and backwashing states can be realized only by opening and closing the sewage discharge assembly 200 by a user, and the use is convenient.

Example two:

the difference between the second embodiment and the first embodiment is that: as shown in fig. 11, a stopper ring 122 is provided in the bowl 120, and the stopper ring 122 can axially stop the partition 411. The inner ring of the stop ring 122 has a guide slope 1221, and the outer ring of the partition 411 can abut against the guide slope 1221.

The partition 411 slides between the connection seat 140 and the limiting ring 122, and after the partition 411 is attached to the guiding inclined surface 1221, the partition 411 partitions the water inlet channel 111 from the raw water chamber 130.

The above description is intended to be illustrative of the present invention and not to limit the scope of the utility model, which is defined by the claims appended hereto.

Claims

1. A backwash filter, characterized in that: the sewage treatment device comprises a body (100), a sewage discharge assembly (200), a filter element (300) and an adjusting piece (400), wherein a raw water cavity (130) is arranged in the body (100), a water inlet flow channel (111), a water outlet flow channel (112) and a sewage discharge outlet (121) are arranged outside the body (100), the water inlet flow channel (111) and the sewage discharge outlet (121) are both communicated with the raw water cavity (130), and the sewage discharge assembly (200) is arranged in the sewage discharge outlet (121) and can control the opening and closing of the sewage discharge outlet (121); the filter element (300) is arranged in the raw water cavity (130), a purified water cavity (340) communicated with the water outlet flow channel (112) is arranged in the filter element (300), and water flow in the raw water cavity (130) passes through the filter element (300) and then enters the purified water cavity (340); the raw water cavity (130) is communicated with the purified water cavity (340) through a first switching hole (311), and the adjusting piece (400) is arranged in the raw water cavity (130) in a sliding mode and can open or seal the first switching hole (311); after the sewage draining outlet (121) is opened, water flow in the raw water cavity (130) can drive the adjusting piece (400) to slide, so that the adjusting piece (400) opens the first switching hole (311).

2. The filter of claim 1, wherein: the adjusting piece (400) is provided with a partition part (411), and after the sewage outlet (121) is opened, the partition part (411) can separate the raw water cavity (130) from the water inlet flow channel (111).

3. A filter according to any one of claims 1-2, wherein: the adjusting piece (400) comprises an adjusting seat (410), and the adjusting seat (410) can float on the water surface and slide along the length direction of the filter element (300).

4. A filter as claimed in claim 3, wherein: a sliding table (420) is arranged on the adjusting seat (410), the sliding table (420) can slide in the water outlet flow channel (112), and the water purifying cavity (340) is separated from the water outlet flow channel (112); after the switching hole I (311) is opened by the adjusting seat (410), the water purifying cavity (340) is isolated from the water outlet flow channel (112) by the sliding table (420); after the first switching hole (311) is sealed by the adjusting seat (410), the water purifying cavity (340) is communicated with the water outlet flow channel (112).

5. The filter of claim 4, wherein: the adjusting seat (410) is provided with a supporting portion (412), the supporting portion (412) is arranged in the first switching hole (311) in a sliding mode, and the sliding table (420) is connected with the supporting portion (412).

6. A filter as claimed in claim 3, wherein: the adjusting seat (410) is internally provided with a closed cavity (413).

7. A filter as claimed in claim 3, wherein: the adjusting seat (410) is provided with a second switching hole (414), the second switching hole (414) can be communicated with the first switching hole (311), and the adjusting seat (410) is provided with an intercepting net (415) which covers the second switching hole (414).

8. The filter of claim 2, wherein: the body (100) comprises a connector (110) and a filter bowl (120), the connector (110) is connected with the filter bowl (120), a connecting seat (140) is arranged in the connector (110), the connecting seat (140) is connected with the filter element (300), and the water outlet flow channel (112) extends into the connecting seat (140) and is communicated with the water purifying cavity (340).

9. The filter of claim 8, wherein: a limiting ring (122) is arranged in the filter cup (120), and the limiting ring (122) can axially limit the partition part (411).

10. The filter of claim 5, wherein: filter core (300) include skeleton (310), filter screen (320) and connecting pipe (330), skeleton (310) with connecting pipe (330) are connected, filter screen (320) set up in the skeleton (310) outside, connecting pipe (330) with body (100) are connected, have in connecting pipe (330) with water purification chamber (340) with centre bore (331) of play water runner (112) intercommunication, switch a hole (311) and set up in on skeleton (310), just slip table (420) can with centre bore (331) cover and open.

11. The filter of claim 10, wherein: the lower end of the framework (310) is provided with a through hole (312), and the through hole (312) is covered by the filter screen (320).