CN115140805B

CN115140805B - Filter element structure

Info

Publication number: CN115140805B
Application number: CN202210737749.9A
Authority: CN
Inventors: 刘红星; 王行飞
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2023-09-15
Anticipated expiration: 2042-06-20
Also published as: CN115140805A

Abstract

The utility model relates to a filter element structure, in which a filter element is positioned in a containing cavity of a shell and is provided with a central pipe and a plurality of water purifying film wires positioned at the periphery of the central pipe, a rotating piece is positioned in a raw water cavity and sleeved at the periphery of the central pipe and is arranged to rotate relative to the central pipe, because the plurality of film wires pass through an opening on the rotating piece, the rotation of the rotating piece can directly act on the water purifying film wires to enable the whole water purifying film wires to swing, dirt accumulated between the water purifying film wires can be in a free state, and the dirt is directly taken away from the filter element by waste water in a flushing stage, so that dirt enrichment is avoided, and the rotation of the rotating piece is more direct and powerful under the direct drive of a movable piece, so that the swinging effect of the water purifying film wires is ensured, in addition, the power source of the movable piece is the driving force of water flow, and the plurality of water purifying film wires can be driven to swing at any time only through the change of water pressure inside the filter element, so that the filter element is very practical.

Description

Filter element structure

Technical Field

The utility model belongs to the field of water purification, and particularly relates to a filter element structure.

Background

At present, the water purifier is a common device in home life, various water purifiers are appeared on the market, and one of key core structures of the water purifier is a filter element with a water purifying film. The filter element comprises a filter shell, and a hollow fiber membrane wire and a central tube which are arranged in the filter shell, wherein the filter shell is provided with a water inlet port, a water purifying outlet and a wastewater port, and the hollow fiber membrane wire is arranged around the central tube. For example, chinese patent No. ZL202120043465.0 (issued to name CN 215506365U) discloses a hollow fiber membrane core, which includes a filter shell, a hollow fiber membrane wire and a central tube disposed in the filter shell, wherein the central tube has an axial water inlet and a radial first water outlet; the hollow fiber membrane wires are divided into inner membrane wires and outer membrane wires by a sleeve pipe arranged in the middle of the hollow fiber membrane wires, the central pipe is positioned in the inner ring of the sleeve pipe and forms an inner water cavity with the inner wall of the sleeve pipe, the sleeve pipe and the inner wall of the filter shell form an outer water cavity, the inner membrane wires are positioned in the inner water cavity, and the outer membrane wires are positioned in the outer water cavity; and a second water outlet hole is formed in one end, far away from the wastewater port, of the sleeve.

The membrane core of the hollow fiber membrane can realize the filtration of water, and the situation that the surface of the membrane is blocked and the water outlet flow is reduced after the hollow fiber membrane is used for a period of time; in addition, in some winter cold areas, when the indoor temperature is lower, the filter element is easy to freeze and break, and then the water leakage problem occurs. Therefore, there is a need for further improvements to existing filter cartridge designs.

Disclosure of Invention

The first technical problem to be solved by the present utility model is to provide a filter element structure for avoiding enrichment of concentrated water, aiming at the current state of the art.

The second technical problem to be solved by the utility model is to provide a filter element structure for avoiding the rupture of the inner shell of the filter element in a low-temperature environment.

The technical scheme adopted by the utility model for solving the first technical problem is as follows: a filter element structure, comprising:

the shell is internally provided with a containing cavity, and a water inlet channel, a water purifying channel and a wastewater channel are formed in the shell;

the filter element is positioned in the containing cavity of the shell, a waste water cavity communicated with the waste water channel is formed between the filter element and the shell, the filter element is provided with a raw water cavity, a water purifying cavity communicated with the water purifying channel, a central pipe at least partially positioned in the raw water cavity and a water purifying film wire at least partially positioned in the raw water cavity and positioned on the periphery side of the central pipe, along the fluid flow direction, the waste water cavity and the water purifying cavity are both positioned at the downstream of the raw water cavity, the side wall of the central pipe is provided with a water through hole communicated with the raw water cavity, and the raw water cavity is in fluid communication with the water purifying cavity through the water purifying film wire;

the water purification channel and the wastewater channel are alternatively in a communication state, and the filter element structure further comprises:

the rotating piece is positioned in the raw water cavity and sleeved on the periphery of the central tube, an opening for the water purification film wire to pass through is formed in the rotating piece, and a first magnetic piece is arranged on the outer wall of the rotating piece;

the connecting ring is sleeved on the shell and positioned at the periphery side of the rotating piece, and a second magnetic piece which is magnetically attracted with the first magnetic piece is arranged on the inner side wall facing the rotating piece;

the movable piece is positioned outside the shell, is in driving connection with the connecting ring, and moves relative to the shell under the pushing action of water flow so as to drive the connection to rotate around the shell.

The rotating member may be in different structural forms, and in order to ensure that the water purifying film wire is driven to swing, preferably, the rotating member includes a sleeve and a disc body arranged on the peripheral wall of the sleeve, the opening is formed in the disc body, the first magnetic member is arranged on the peripheral wall of the disc body, the sleeve is sleeved on the periphery of the central tube, and the rotating axis of the rotating member is the axis of the sleeve.

In order to ensure uniform stress of the rotating member in the circumferential direction, preferably, a plurality of first magnets are arranged at intervals along the circumferential direction of the rotating member, and each of the first magnets corresponds to one of the second magnets.

In order to ensure that both ends of the water purifying film wire in the length direction can swing, thereby having a large swing amplitude as a whole, preferably, at least two disks are arranged at intervals along the axial direction of the sleeve.

In order to ensure that a plurality of water purification membrane wires in the filter element can be driven by the disc bodies, specifically, at least two openings are formed in each disc body, and the openings in each disc body are arranged at intervals along the circumferential direction of the sleeve.

Preferably, the openings on two adjacent tray bodies are arranged in a staggered manner.

The filter element may be in different specific structural forms, preferably, the filter element comprises an inner shell arranged along the length direction of the central tube, and the raw water cavity and the purified water cavity are positioned in the inner shell and are arranged along the length direction of the central tube.

The specific water route overall arrangement form of filter core is: the shell comprises a shell body and a base body connected with the shell body, and the water inlet channel, the water purifying channel and the waste water channel are all arranged in the base body.

Preferably, the inner shell is connected with the base body, and the inner shell is provided with a connecting pipe which is communicated with the water inlet channel and the central pipe.

In order to ensure uniform water guiding of the central tube, the water through holes are preferably arranged at intervals along the circumferential direction of the central tube.

The movable member and the connecting ring may be in different connection forms, and preferably, a transmission part capable of being in driving connection with the movable member is provided on the connecting ring, and the transmission part is arranged on the moving path of the movable member. In this way, the movable part can select the moving depth under different using states, so as to flexibly control whether the movable part contacts with the transmission part of the connecting ring or adjust the contact strength.

In order to further solve the second technical problem, the technical scheme adopted by the utility model is as follows: the filter element structure also comprises a pressure channel and an elastic piece, wherein the pressure channel is in fluid communication with one of the waste water cavity, the raw water cavity and the water purifying cavity, the movable piece is at least partially positioned on the flow path of fluid in the pressure channel, and the elastic piece acts on the movable piece and enables the movable piece to always have a trend of moving against the water flow. In the layout form of the pressure channel, on one hand, the power of water flow can be transferred for multiple times by means of the movement of the movable piece and then converted into the kinetic energy of the rotary piece in a normal state, so that the plurality of water purification film wires are driven to swing, and dirt is prevented from accumulating among the water purification film wires; on the other hand, by means of the elastic action of the elastic piece, pressure adjustment can be purposefully carried out on water flow in the waste water cavity, the raw water cavity and the purified water cavity, once the whole volume of an ice-water mixture is enlarged due to icing tendency, and the original cavity is insufficient for accommodating, the movable piece and the elastic piece can timely move according to pressure change to play a role in pressure relief, meanwhile, the rotating piece can be driven to rotate, the phenomenon that the purified water film wire is damaged due to icing is avoided, when the temperature is raised again, the elastic piece is released due to energy storage, and the original cavity can be supplemented timely.

In order to avoid that the pressure chamber is directly impacted by the water flow and is deactivated, it is preferred that the flow direction of the liquid in the pressure channel intersects the axial direction of the housing. According to the layout mode, the water flow enters the pressure channel from the original flow channel and needs to be diverted, and the kinetic energy carried by the water flow is fully released at the diverting position, so that the flexibility and accuracy of pressure regulation of the whole pressure channel are ensured.

The pressure channels may be of different layout forms, so that a first layout form of the pressure channels is located outside the shell, in particular, a cylinder is arranged outside the shell, the pressure channels are formed in the cylinder, the movable part is a piston, the piston is in sealing connection with the inner peripheral wall of the cylinder, so that the pressure channels are formed into a first cavity and a second cavity which are arranged side by side at intervals, a water inlet is formed in the end wall of the first cavity, the piston is provided with a trigger rod which is located outside the cylinder partially and can be linked with the piston, and the transmission part is located on the moving path of the trigger rod.

In order to ensure the driving of the connecting ring transmission part, preferably, the first end of the trigger rod is connected to the back of the piston, the second end of the trigger rod extends out of the cylinder, a through hole for the trigger rod to penetrate is formed in the end wall of the second chamber, and the elastic piece is arranged in the second chamber, and the two ends of the elastic piece respectively abut against the back of the piston and the outer edge of the through hole in the end wall of the second chamber.

Specifically, the trigger rod extends along the tangential direction of the outer peripheral wall of the shell, the moving direction of the trigger rod is consistent with the extending direction of the trigger rod, and the transmission part is columnar and the extending direction of the transmission part is intersected with the extending direction of the trigger rod.

In order to avoid the slipping of the transmission part and the trigger rod, preferably, the second end of the trigger rod is provided with a limiting hole which is strip-shaped and is used for the transmission part to be arranged in, the limiting hole extends along the length direction of the trigger rod, and two end walls in the length direction of the limiting hole can be abutted against the transmission part.

The second layout form of the pressure channel is integrated at one end of the shell, preferably, the shell comprises a shell and a base body connected with the shell, the pressure channel is arranged on one of the shell and the base body, the piston is provided with a connecting plate which is at least partially positioned outside the pressure channel and can extend out of the shell, the connecting plate is provided with an inclined surface which gradually inclines inwards along the flow direction of water flow in the pressure channel on the side wall adjacent to the free end, and a transmission part on the connecting ring is positioned on the movable path of the side wall of the connecting plate of the piston and can slide along the inclined surface when contacting with the side wall of the connecting plate, so that the connecting ring is driven to rotate.

The second layout form is subdivided into two cases, one of which is: the pressure channel is arranged on the base body, the water inlet end of the pressure channel is in fluid communication with the water purifying cavity, the pressure channel is provided with an opening with an outward opening adjacent to the outer edge of the base body, the opening is provided with a sealing cover, and the sealing cover is provided with a notch for the corresponding connecting plate to extend out.

Another case of the second layout form is: the pressure channel is arranged on the end wall of the shell, the water inlet end of the pressure channel is in fluid communication with the waste water cavity, the pressure channel is provided with an opening with an outward opening adjacent to the outer edge of the shell, the opening is provided with a sealing cover, and the sealing cover is provided with a notch for the corresponding connecting plate to extend out.

Compared with the prior art, the utility model has the advantages that: in this filter core structure, be provided with the rotating member in the raw water cavity of filter core, because many membrane silk all pass the opening on the rotating member, then the rotation of rotating member just can directly be used on the water purification membrane silk, make many water purification membrane silk whole take place the swing, dirt just can be in the free state between the water purification membrane silk like this, and be directly taken away the filter core by waste water at the stage of washing, avoid dirt enrichment, and under the direct drive of moving part, the rotation of rotating member is more direct powerful, thereby ensure the swing effect of water purification membrane silk, the power supply of moving part is the driving force of rivers, need not to set up the driving piece alone like this, just can drive many water purification membrane silk swing at any time through the change of the inside water pressure of filter core, and is very practical.

Drawings

FIG. 1 is a schematic view of the whole structure of a filter element according to a first embodiment of the present utility model;

FIG. 2 is a schematic illustration of FIG. 1 with portions omitted;

FIG. 3 is a cross-sectional view of a portion of the structure of FIG. 1;

FIG. 4 is an overall cross-sectional view of a cartridge structure in a first embodiment of the utility model;

FIG. 5 is an overall schematic of the rotating member;

FIG. 6 is a schematic overall view of a first arrangement of pressure channels in a second embodiment of the present utility model;

FIG. 7 is another angular cross-sectional view of FIG. 6;

FIG. 8 is an overall schematic of the piston;

FIG. 9 is a schematic diagram showing a second arrangement of pressure channels according to a second embodiment of the present utility model;

fig. 10 is a cross-sectional view of the other angle of fig. 9.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

Example 1:

as shown in fig. 1 to 5, which are a first preferred embodiment of the present utility model, the cartridge structure includes a housing 1, a cartridge 02, a rotating member 3, a connecting ring 51, and a movable member. The housing 1 has a cavity 10 therein, on which a water inlet channel 101, a water purifying channel 102 and a waste water channel 103 are provided, the housing 1 may be formed by different specific structures, the housing 1 in this embodiment includes a housing 11 and a base 12 connected with the housing 11, the water inlet channel 101, the water purifying channel 102 and the waste water channel 103 are all provided in the base 12, the base 12 is a commonly known "waterway board" in industry, the waterway board is usually fixedly mounted in the water purifier, and the filter element 02 is detachably mounted on the waterway board.

The filter element 02 in this embodiment is located in the cavity 10 of the housing 1, and a waste water cavity 03 communicating with the waste water channel 103 is formed between the filter element 02 and the housing 1, the filter element 02 has a raw water cavity 201, a purified water cavity 202 communicating with the purified water channel 102, a central tube 21 at least partially located in the raw water cavity 201, and a purified water film wire 22 at least partially located in the raw water cavity 201 and located at the periphery of the central tube 21, and the raw water cavity 201 is in fluid communication with the purified water cavity 202 through the purified water film wire 22 (i.e. a purified water process). Along the fluid flow direction, the wastewater cavity 03 and the water purifying cavity 202 are both located at the downstream of the raw water cavity 201, and the side wall of the central tube 21 is provided with water through holes 211 communicated with the raw water cavity 201, so as to ensure uniform water guiding and water guiding efficiency, and the water through holes 211 are actually multiple and are arranged at intervals along the circumferential direction of the central tube 21. The filter element 02 includes an inner casing 2 disposed along a longitudinal direction of the central tube 21, and the raw water chamber 201 and the purified water chamber 202 are disposed in the inner casing 2 and along the longitudinal direction of the central tube 21. The inner shell 2 is connected with the base body 12, the connecting pipe 4 which is communicated with the water inlet channel 101 and the central pipe 21 is arranged on the inner shell 2, and the drain hole 200 which is communicated with the waste water cavity 03 is arranged on the bottom wall of the inner shell 2.

In this embodiment, the rotating member 3 is used for driving the plurality of water purifying films 22 to swing, the rotating member 33 is specifically located in the raw water cavity 201 and sleeved on the periphery of the central tube 21, an opening 321 through which the water purifying films 22 pass is formed in the rotating member, a first magnetic member 322 is disposed on the outer wall of the rotating member 3, in addition, the rotating member 3 includes a sleeve 31 and a disc 32 disposed on the outer peripheral wall of the sleeve 31, the opening 321 is formed on the disc 32, the first magnetic member 322 is disposed on the outer peripheral wall of the disc 32, the sleeve 31 is sleeved on the periphery of the central tube 21, and the rotation axis of the rotating member 3 is the axis of the sleeve 31. In order to ensure uniform stress on the rotating member 3 in the circumferential direction and ensure that the rotating member is crisp and powerful in rotation, a plurality of first magnets 322 are arranged at intervals along the circumferential direction of the rotating member 3, and each first magnet 322 corresponds to one second magnet 511. And in order to ensure that both ends of the net water film wire 22 in the length direction can swing under force, specifically, at least two discs 32 are arranged at intervals along the axial direction of the sleeve 31. Each tray body 32 is provided with at least two openings 321, the openings 321 on each tray body 32 are arranged at intervals along the circumferential direction of the sleeve 31, and the openings 321 on two adjacent tray bodies 32 are arranged in a staggered manner.

In order to realize the driving of the rotating member 3, different power source forms can be adopted, in order to avoid polluting the inside of the filter element 02, the external connecting ring 51 is adopted for driving, the connecting ring 51 is specifically sleeved on the casing 1 and is positioned at the periphery side of the rotating member 3, and the inner side wall facing the rotating member 3 is provided with a second magnetic member 511 magnetically attracted with the first magnetic member 322. Thus, by the magnetic attraction type, the inner and outer linkage of the rotating member 3 and the connecting ring 51 can be realized without direct contact. In this embodiment, the movable member is located outside the housing 1 and is in driving connection with the connection ring 51, and moves relative to the housing 1 under the pushing action of the water flow to drive the connection ring 51 to rotate around the housing 1. Specifically, the connecting ring 51 is provided with a transmission portion 512 that can be drivingly connected to the movable member, and the transmission portion 512 is disposed on the moving path of the movable member. Each of the above-mentioned trays corresponds to one connection ring 51, as shown in fig. 1, two connection rings 51 are arranged at intervals along the length direction of the central tube 21, and the two connection rings 51 are connected by a connection bar 54, and the transmission part is an extension rod mounted on the connection bar 54.

In order to achieve the pressure relief effect in extreme use situations, the filter cartridge structure further comprises a pressure channel 100 and an elastic member, wherein the pressure channel 100 is in fluid communication with one of the waste water chamber 03, the raw water chamber 201 and the purified water chamber 202, the movable member mentioned above is at least partially positioned in the fluid flow path in the pressure channel 100 and is moved by means of the water flow in the pressure channel 100, and the elastic member acts on the movable member and enables the movable member to always have a tendency to move against the water flow. In the normal state, the layout form of the pressure channel 100 can transfer the power of water flow for multiple times by means of the movement of the movable part and then convert the power into the kinetic energy of the rotary part 3, so that the plurality of water purifying film wires 22 are driven to swing, and dirt is prevented from accumulating among the water purifying film wires 22; on the other hand, by means of the elastic action of the elastic piece, the pressure of the water flow in the waste water cavity, the raw water cavity and the purified water cavity can be adjusted purposefully, once the whole volume of the ice-water mixture is enlarged due to the icing tendency in each cavity and the original cavity is insufficient to accommodate, the movable piece and the elastic piece can timely move according to the change of the pressure to play a role in pressure relief, meanwhile, the rotating piece 3 can be driven to rotate, the phenomenon that the purified water film wire 22 is damaged due to icing is avoided, when the temperature is raised again, the elastic piece is released due to energy storage, and the original cavity can be supplemented timely. The flow direction of the liquid in the pressure channel 100 in this embodiment intersects the axial direction of the housing 1. In this way, the water flow enters the pressure channel 100 from the original flow channel and needs to be diverted, and the kinetic energy carried by the water flow is fully released at the diversion position, so that the flexibility and accuracy of the pressure regulation of the whole pressure channel 100 are ensured.

Of course, the pressure channel 100 may be in different specific forms, in this embodiment, a cylinder 7 is disposed outside the housing 1, the pressure channel 100 is formed by the hollow inside of the cylinder 7, the movable member is a piston 6, the piston 6 is hermetically connected with the inner peripheral wall of the cylinder 7 so as to form a first chamber 7a and a second chamber 7b arranged side by spacing the pressure channel 100, the end wall of the first chamber 7a is provided with a water inlet 70, the piston 6 has a trigger rod 61 partially located outside the cylinder 7 and capable of being linked with the piston 6, and the transmission part 512 is located on the moving path of the trigger rod 61. Specifically, the first end of the trigger rod 61 is connected to the back of the piston 6, the second end of the trigger rod extends out of the cylinder 7, a through hole 7c for the trigger rod 61 to penetrate is formed in the end wall of the second chamber 7b, and the elastic member is arranged in the second chamber 7b, and two ends of the elastic member respectively abut against the back of the piston 6 and the outer edge of the through hole 7c in the end wall of the second chamber 7 b.

The trigger lever 61 in this embodiment extends tangentially along the outer peripheral wall of the housing 1, and its moving direction coincides with its own extending direction, and the transmission portion 512 is columnar and its extending direction intersects with the extending direction of the trigger lever 61. And the second end of the triggering rod 61 is provided with a limiting hole 62 which is strip-shaped and is used for the transmission part 512 to be placed in, the limiting hole 62 extends along the length direction of the triggering rod 61, and two end walls in the length direction can be abutted against the transmission part 512.

Example 2:

referring to fig. 6 to 10, for the second preferred embodiment of the present utility model, this embodiment is different from embodiment 1 described above in that: the pressure channel 100 is integrated in the housing 1. Specifically, the casing 1 includes a housing 11 and a base 12 connected to the housing 11, one of the housing 11 and the base 12 is provided with a pressure channel 100, the piston 6 has a connecting plate 61 located at least partially outside the pressure channel 100 and capable of extending outside the casing 1, the connecting plate 61 has an inclined surface 611 on a side wall adjacent to a free end, the inclined surface is gradually inclined inwards along a water flow direction in the pressure channel 100, and a transmission portion 512 on the connecting ring 51 is located on a moving path of a side wall of the connecting plate 61 of the piston 6 and can slide along the inclined surface 611 when contacting with the side wall of the connecting plate 61, so as to drive the connecting ring 51 to rotate. Of course, due to different structures at two ends of the housing 1, during actual production, the specific positions of the pressure channels 100 can be flexibly selected according to different specific pressure release requirements:

referring to fig. 6-8, a first specific arrangement is: the pressure channel 100 is disposed on the base 12, and the water inlet end of the pressure channel is in fluid communication with the water purifying cavity 202 through the water purifying channel 102, the pressure channel 100 has an opening facing outwards adjacent to the outer edge of the base 12, a sealing cover 104 is disposed on the opening, and a gap for extending the corresponding connecting plate 61 is formed on the sealing cover.

Referring to fig. 9 and 10, the second specific arrangement is: the pressure channel 100 is provided on the end wall of the housing 11, and its water inlet end is in fluid communication with the waste water chamber 03, the pressure channel 100 has an opening facing outwards adjacent to the outer edge of the housing 11, the opening is provided with a sealing cover 104, and the sealing cover has a notch for the corresponding connection plate 61 to protrude.

In the water purifying process and the flushing process, the water purifying channel 102 and the waste water channel 103 are alternatively in a communicating state. When water is purified, the waste water channel 103 is closed, and water flow can only be discharged from the water purifying channel 102 under the pressure of the booster pump, so that raw water of the water inlet channel 101 enters the raw water cavity 201 through the water through holes 211, under the action of water pressure, water flow is filtered through the water purifying membrane wires 22, then purified water generated by the water purifying membrane wires 22 is guided into the water purifying cavity 202, and finally the purified water is output through the water purifying channel 102; during flushing, the water purifying channel 102 is closed, water flow can only be discharged from the waste water channel 103, and during the water purifying stage and the flushing stage, the connecting ring 51 is driven by the movable part to drive the rotating part 3 to rotate, and the dirt accumulated among the water purifying film wires 22 can be in a free state under the rotating action of the rotating part 3, so that the dirt is discharged out of the filter element along with the waste water outside the water purifying film wires 22 during the flushing stage. The elastic members according to the present utility model are springs 9.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

The term "fluid communication" as used herein refers to a spatial positional relationship between two components or parts (hereinafter collectively referred to as a first part and a second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow along a flow path from the first part to the second part or/and be transported to the second part, or the first part and the second part may be directly communicated with each other, or the first part and the second part may be indirectly communicated with each other through at least one third party, and the third party may be a fluid channel such as a pipe, a channel, a conduit, a flow guiding member, a hole, a groove, or the like, or a chamber allowing the fluid to flow through, or a combination thereof.

Claims

1. A filter element structure, comprising:

a housing (1) with a cavity (10) inside, on which a water inlet channel (101), a water purifying channel (102) and a waste water channel (103) are arranged;

a filter element (02) located in the cavity (10) of the housing (1), and a waste water cavity (03) communicated with the waste water channel (103) is formed between the filter element (02) and the housing (1), the filter element (02) is provided with a raw water cavity (201), a pure water cavity (202) communicated with the pure water channel (102), a central tube (21) at least partially located in the raw water cavity (201) and a pure water film wire (22) at least partially located in the raw water cavity (201) and located at the periphery of the central tube (21), along the fluid flow direction, the waste water cavity (03) and the pure water cavity (202) are located at the downstream of the raw water cavity (201), a water through hole (211) communicated with the raw water cavity (201) is formed in the side wall of the central tube (21), and the raw water cavity (201) is in fluid communication with the pure water cavity (202) through the pure water film wire (22);

the filter element structure is characterized in that the water purifying channel (102) and the waste water channel (103) are alternatively in a communication state, and the filter element structure further comprises:

a rotating member (3) which is positioned in the raw water cavity (201) and sleeved on the periphery of the central tube (21), an opening (321) for the water purification film wire (22) to pass through is formed on the rotating member, and a first magnetic member (322) is arranged on the outer wall of the rotating member (3);

a connecting ring (51) sleeved on the shell (1) and positioned on the periphery side of the rotating member (3), and a second magnetic member (511) magnetically attracted with the first magnetic member (322) is arranged on the inner side wall facing the rotating member (3); and

the movable piece is positioned outside the shell (1) and is in driving connection with the connecting ring (51), and moves relative to the shell (1) under the pushing action of water flow so as to drive the connecting ring (51) to rotate around the shell (1).

2. A filter cartridge arrangement according to claim 1, wherein: the rotating member (3) comprises a sleeve (31) and a disc body (32) arranged on the peripheral wall of the sleeve (31), the opening (321) is formed in the disc body (32), the first magnetic member (322) is arranged on the peripheral wall of the disc body (32), the sleeve (31) is sleeved on the periphery of the central tube (21), and the rotating axis of the rotating member (3) is the axis of the sleeve (31).

3. A filter cartridge arrangement according to claim 1, wherein: the plurality of first magnetic pieces (322) are arranged at intervals along the circumferential direction of the rotating piece (3), and each first magnetic piece (322) corresponds to one second magnetic piece (511).

4. A filter cartridge arrangement according to claim 2, wherein: at least two of the disk bodies (32) are arranged at intervals along the axial direction of the sleeve (31).

5. The cartridge structure of claim 4, wherein: at least two openings (321) are formed in each disc body (32), and the openings (321) in each disc body (32) are arranged at intervals along the circumferential direction of the sleeve (31).

6. A filter cartridge arrangement according to claim 5, wherein: the openings (321) on two adjacent tray bodies (32) are arranged in a staggered way.

7. A filter cartridge arrangement according to claim 1, wherein: the filter element (02) comprises an inner shell (2) which is arranged along the length direction of the central tube (21), and the raw water cavity (201) and the water purifying cavity (202) are positioned in the inner shell (2) and are arranged along the length direction of the central tube (21).

8. The cartridge structure of claim 7, wherein: the shell (1) comprises a shell (11) and a base body (12) connected with the shell (11), and the water inlet channel (101), the water purifying channel (102) and the waste water channel (103) are all arranged in the base body (12).

9. The cartridge structure of claim 8, wherein: the inner shell (2) is connected with the base body (12), and the inner shell (2) is provided with a connecting pipe (4) which is communicated with the water inlet channel (101) and the central pipe (21).

10. A filter cartridge arrangement according to claim 1, wherein: the water through holes (211) are arranged at intervals along the circumferential direction of the central tube (21).

11. A cartridge arrangement according to any one of claims 1 to 10, wherein: the connecting ring (51) is provided with a transmission part (512) which can be in driving connection with the movable piece, and the transmission part (512) is arranged on the moving path of the movable piece.

12. A filter cartridge arrangement according to claim 11, wherein: the device also comprises a pressure channel (100) and an elastic piece, wherein the pressure channel (100) is in fluid communication with one of the waste water cavity (03), the raw water cavity (201) and the purified water cavity (202), the movable piece is at least partially positioned on a flow path of fluid in the pressure channel (100), and the elastic piece acts on the movable piece and enables the movable piece to always have a trend of moving against water flow.

13. A filter cartridge arrangement according to claim 12, wherein: the flow direction of the liquid in the pressure channel (100) intersects the axial direction of the housing (1).

14. A filter cartridge arrangement according to claim 13, wherein: the novel high-pressure oil pump is characterized in that a cylinder body (7) is arranged outside the shell (1), a pressure channel (100) is formed in the cylinder body (7), the movable part is a piston (6), the piston (6) is in sealing connection with the inner peripheral wall of the cylinder body (7), a first cavity (7 a) and a second cavity (7 b) which are arranged side by side are formed at intervals in the pressure channel (100), a water inlet (70) is formed in the end wall of the first cavity (7 a), the piston (6) is provided with a trigger rod which is locally arranged outside the cylinder body (7) and can be linked with the piston (6), and the transmission part (512) is positioned on the moving path of the trigger rod.

15. A filter cartridge arrangement according to claim 14, wherein: the first end of the trigger rod is connected to the back of the piston (6) and the second end of the trigger rod extends out of the cylinder (7), a through hole (7 c) for the trigger rod to penetrate out is formed in the end wall of the second chamber (7 b), and the elastic piece is arranged in the second chamber (7 b) and two ends of the elastic piece are respectively propped against the back of the piston (6) and the outer edge of the through hole (7 c) in the end wall of the second chamber (7 b).

16. A filter cartridge arrangement according to claim 15, wherein: the trigger rod extends along the tangential direction of the peripheral wall of the shell (1), the moving direction of the trigger rod is consistent with the extending direction of the trigger rod, and the transmission part (512) is columnar and the extending direction of the transmission part is intersected with the extending direction of the trigger rod.

17. A filter cartridge arrangement according to claim 16, wherein: the second end of the trigger rod is provided with a limit hole (62) which is in a strip shape and is used for the transmission part (512) to be arranged in, the limit hole (62) extends along the length direction of the trigger rod, and two end walls in the length direction of the limit hole can be abutted against the transmission part (512).

18. A filter cartridge arrangement according to claim 13, wherein: the shell (1) comprises a shell (11) and a base body (12) connected with the shell (11), one of the shell (11) and the base body (12) is provided with the pressure channel (100), the movable part is a piston (6), the piston (6) is provided with a connecting plate which is at least partially positioned outside the pressure channel (100) and can extend out of the shell (1), the side wall adjacent to the free end of the connecting plate is provided with an inclined surface (611) which gradually inclines inwards along the flow direction of water in the pressure channel (100), and a transmission part (512) on the connecting ring (51) is positioned on the movable path of the side wall of the connecting plate of the piston (6) and can slide along the inclined surface (611) when contacting with the side wall of the connecting plate, so that the connecting ring (51) is driven to rotate.

19. A filter cartridge arrangement according to claim 18, wherein: the pressure channel (100) is arranged on the base body (12), the water inlet end of the pressure channel is in fluid communication with the water purifying cavity (202), the pressure channel (100) is provided with an opening which is adjacent to the outer edge of the base body (12) and is outwards opened, the opening is provided with a sealing cover (104), and the sealing cover is provided with a notch for the corresponding connecting plate to extend out.

20. A filter cartridge arrangement according to claim 18, wherein: the pressure channel (100) is arranged on the end wall of the shell (11), the water inlet end of the pressure channel is in fluid communication with the waste water cavity (03), the pressure channel (100) is provided with an opening which is adjacent to the outer edge of the shell (11) and is outwards opened, the opening is provided with a sealing cover (104), and the sealing cover is provided with a notch for the corresponding connecting plate to extend out.