CN210286947U - Self-flushing filter element assembly - Google Patents

Abstract

The application discloses a self-flushing filter element assembly which comprises a shell, a first water channel, a second water channel, a filter screen and a first filter unit, wherein the first water channel, the second water channel, the filter screen and the first filter unit are arranged in the shell; two ends of the first waterway are respectively communicated with the raw water port and the purified water port; two ends of the second water path are respectively communicated with the raw water port and the flushing port; the filter screen and the first filtering unit are sequentially arranged in the first water channel along the flowing direction of the first water channel, and the filtering front end of the filter screen is communicated with the second water channel; the self-washing filter element assembly can be switched between a use state and a washing state, and in the use state, the first water path is communicated, so that raw water flows from the front filtering end to the rear filtering end of the filter screen; under the state of flushing, the second water path is conducted, and the raw water flushes the filter screen from the filtering front end of the filter screen. The application from washing filter element group spare, it is wider to be suitable for the area, does not need the dismouting filter screen to realize washing the filter screen independently, fully provided user's user demand, and user experience is better.

Description

Self-flushing filter element assembly

Technical Field

The application belongs to the technical field of water purification equipment, especially, relate to a from washing filter element subassembly.

Background

In recent years, with the continuous improvement of the living standard of people, people pay more and more attention to the quality of drinking water, so that the water purification market is fierce, and water purification products begin to be popularized and become the most potential products in the field of household appliances; meanwhile, the updating pace of water purification products is accelerated, and the industrial technology is continuously promoted. The water purification product purifies raw water through the filter element to obtain directly drinkable water. Along with the extension of service life, the filter core can be blockked up to impurity in the raw water, consequently needs regularly to unpick and wash or change the filter core to ensure water purification product normal work. Therefore, the filter element of the water purification product belongs to a consumable, and needs to be replaced after being used for a period of time, and the service life and the cost of replacing the filter element become the common pain points of consumers and manufacturers.

The filter element has the advantages that the filter element is often blocked in the process of filtering large granular substances due to large difference of water quality in various places and different sizes of the granular substances in water, the service life of the filter element is greatly shortened, the filtering effect is poor, and the use cost of the filter element is too high; large-particle impurities and dirt scale are remained on the surface of the filter element, so that the filter element is inconvenient to clean, the workload of a user is increased, and the use experience of the user is influenced; meanwhile, the water quality range of raw water suitable for the water purification product is limited, the practicability of the water purification product is reduced, and the popularization and the application of the water purification product are influenced.

Along with the arrival of big flux water purifier era, composite filter element, long-term filter core come into effect, but do not fundamentally solve the pain point, just accomplish traditional two to tertiary filter core together purely, the volume increases, can't wash, large granule impurity and dirt incrustation scale remain on the filter core surface, perhaps increase a leading filter for the water purifier front end, the process filter of stainless steel net promptly, can only user's manual going washes during washing, perhaps wholly increase the stainless steel net on inside filter core surface, and is with high costs, and the processing degree of difficulty is big.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the purpose of this application is to provide a from washing filter element group spare, and the raw water quality of water scope that can be suitable for is wider, extension filter core life, and is small moreover, simple structure, and the filter core washs and maintains the convenience, changes and maintains simple and conveniently, reduces filter element group spare use cost, promotes user and uses experience.

To achieve the above object, the present application proposes a self-flushing filter element assembly, characterized in that it comprises: the device comprises a shell, a water inlet, a water purifying inlet and a flushing port, wherein the shell is provided with a raw water inlet, a purified water inlet and a flushing port; the first water channel is arranged in the shell, and two ends of the first water channel are respectively communicated with the raw water port and the purified water port; the second water channel is arranged in the shell, and two ends of the second water channel are respectively communicated with the original water port and the flushing port; the filter screen and the first filtering unit are arranged in the first water path in sequence along the flowing direction of the first water path, and the filtering front end of the filter screen is communicated with the second water path; the self-washing filter element assembly can be switched between a use state and a washing state, in the use state, the first water path is communicated, and raw water flows from the front filtering end to the rear filtering end of the filter screen; under the washing state, the second water path is conducted, and the raw water washes the filter screen from the filtering front end of the filter screen.

In one example, the filter screen is axially disposed within the housing, and the flow direction of the second water path through the filter front end of the filter screen is parallel to the axial direction of the filter screen to form a side-stream flush against the filter front end of the filter screen.

In one example, the screen nest is disposed inside the first filter unit; or, first filter unit is hollow tube-shape to have along the radial filter direction of first filter unit, the filter screen with first filter unit follows the axial of casing is arranged in proper order.

In one example, the self-flushing filter cartridge assembly further comprises a screen support disposed within the housing, the screen being fixedly mounted within the housing by the screen support; the filter front end of filter screen the inner wall of casing and enclose into former water district between the filter screen support, former water district with former water mouth intercommunication.

In one example, the inner end face of the shell is provided with a first annular rib and a second annular rib which are sequentially nested from the center to the outside and extend along the axial direction of the shell; the filter screen support with the second annular muscle is connected, tip space in the casing is followed the radial outside water purification district, coarse filtration water district and of dividing into in proper order by the center of casing and former water district, water purification district with water purification mouth intercommunication, the filter screen is close to one side in former water district does the filtration front end of filter screen, the filter screen is close to one side in coarse filtration water district does the filtration rear end of filter screen.

In one example, the inner end face of the shell is further provided with a third annular rib which is nested on the periphery of the second annular rib, the third annular rib extends along the axial direction of the shell and divides the raw water into a water inlet area and a flushing water area, the raw water inlet is positioned in the water inlet area, the filter screen is positioned in the water inlet area, and the flushing water area is communicated with the flushing port; and one end of the third annular rib, which is close to the filter screen support, is provided with an overflowing part communicated with the water inlet area and the flushing water area, and the water inlet area and the flushing water area form the second water path.

In one example, the flow passing part is arranged in a staggered manner with the raw water port and the flushing port in the axial direction of the filter screen.

In one example, the self-flushing filter element assembly further comprises a water purification channel which is embedded in the filter screen, one end of the water purification channel is connected with the first annular rib, and the other end of the water purification channel is communicated with the first filter unit.

In one example, the inner end face of the shell is provided with a first annular rib and a second annular rib which are sequentially nested from the center to the outside and extend along the axial direction of the shell; the end space in the shell is sequentially divided into a flushing water area, the raw water area and a water purifying area from the center to the outside along the radial direction of the shell, the water purifying area is communicated with the water purifying port, and the flushing water area is communicated with the flushing port; the self-washing filter element assembly further comprises a washing pipeline which is nested in the filter screen, one end of the washing pipeline is connected with the first annular rib, and the other end of the washing pipeline is communicated with the raw water area.

In one example, the self-flushing filter cartridge assembly further includes a second filter element disposed within the housing, the second filter element being located within the first waterway and downstream of the first filter element.

Through the self-flushing filter element assembly that this application provided can bring following beneficial effect:

1. the filter screen is arranged, so that the first filter unit is protected, the service life of the first filter unit is prolonged, the allowable raw water quality range of the self-flushing filter element assembly is expanded, the application area is wider, the practicability is stronger, and the large-scale popularization and application of water purification products are facilitated; by arranging the first water path and the second water path which are mutually independent, the filter screen can be independently washed without being disassembled and assembled, the daily cleaning and maintenance are convenient, the service life of the self-washing filter element assembly is prolonged, the water leakage risk caused by the disassembly and the assembly of the pipeline is eliminated, the self-washing function of the self-washing filter element assembly is realized, and the self-washing filter element assembly is simple and convenient for user maintenance, time-saving and labor-saving; the pollution of the flushing water passing through the filter screen to the first water channel is effectively prevented, the first filtering unit is protected to the maximum extent, the filtering and water purifying effect of the self-flushing filter element assembly is ensured, the service life of the self-flushing filter element assembly is greatly prolonged, the use cost of a user is reduced, the use requirement of the user is fully met, and the use experience of the user is improved; the filter screen and the first filter unit are integrally installed in the shell to form the composite filter element, so that the water leakage hidden danger at the joint of each part is eliminated, the installation is compact, the structure is simple, the volume of the self-washing filter element assembly is greatly reduced, the installation space is saved, and the occupied kitchen space is reduced; the self-washing filter element assembly complete machine is provided with only one filter element, the appearance is attractive, resources are saved, the manufacturing cost of the self-washing filter element assembly is reduced, the filter element collocation mode is increased, the disassembly and assembly are simple, convenient and fast to maintain, time and labor are saved, the assembly efficiency is high, the requirements of users on high-quality and high-quality life are met, and the user experience is better.

2. Form the side flow to the filtration front end of filter screen and wash, the scouring force is big, can effectively wash out the deposit at the filter screen and filter large granule impurity such as dust, silt of front end, and is better to the washing effect of filter screen, is favorable to the extension from washing filter element group spare life, promotes user experience.

3. The filter screen is embedded in the first filter unit or the filter screen and the first filter unit are sequentially arranged along the axial direction of the shell, the filter screen has small volume, low cost, simple and compact structure and high assembly convenience and efficiency, the volume of the self-washing filter element assembly is further reduced, the occupied space is reduced, and the installation space is saved; and can inject silt etc. that produce when coarse filtration inboard at first filter unit, perhaps form two filter regions in the axial in casing 1, inject silt etc. that produce when coarse filtration in the axial, it is more convenient when driving silt, and convenience of customers is manual to be clear away, and the effect is better when washing through washing the mouth, and clean maintenance is convenient, is favorable to the extension from washing filter element group spare life, and user experience is better.

4. The filter screen support plays the fixed stay effect to the filter screen, prevents that the filter screen from being washed away extrusion deformation by rivers, guarantees the intensity and the filter effect of filter screen, simple structure moreover, and convenient assembling is swift efficient, and the dismouting is maintained conveniently, and user experience is better.

5. By arranging the first annular rib and the second annular rib, a water path structure is optimized, the generation of dead water is avoided, the filtering areas of the filter screen and the first filtering unit are fully utilized, the filtering efficiency is high, the filtering effect is better, and the user experience is better; the surrounding combination is realized through annular superposition, the mounting structure is compact, the space occupation is reduced, the whole volume of the self-washing filter element assembly is reduced, the kitchen mounting space is saved, and the user experience is better; the filter screen can limit silt and the like generated in the coarse filtration process in a raw water area outside the filter screen, so that the silt and the like can be removed more conveniently, the silt and the like can be removed manually by a user conveniently, the washing effect is better when the filter screen is washed through the washing port, the filter screen is convenient to clean and maintain, the service life of the self-washing filter element assembly is prolonged, and the user experience is better; the sealing structures can be arranged at one end of the shell and are sealed pairwise, the sealing effect is better, water leakage and water overflow are effectively prevented, the water leakage risk is low, the filtering and flushing effects of the self-flushing filter element assembly are ensured, and the service life of the self-flushing filter element assembly is prolonged; and the size chain is good to the degree of control, and the structure is compacter, and the whole volume of self-washing filter element group spare is littleer, saves kitchen installation space, and user experience is better.

6. The raw water area is divided into a water inlet area and a flushing water area by arranging the third annular rib, the filter screen is flushed by water flow in a lateral flow manner, the flow channel is short, the flushing force is large, the siphon force is formed, and the flushing effect on the filter screen is optimal; and second waterway structure obtains optimizing, stops the production of stagnant water, prevents effectively that the sparge water from remaining, and the structure is compacter, and is littleer from the whole volume of washing filter element group spare, saves kitchen installation space.

7. The portion of overflowing with former mouth of a river and wash mouthful axial in the filter screen dislocation arrangement, the realization is washed the side flow of filter screen, rivers by last to down again by going up, the runner is short, scouring force is big, and forms rainbow suction, can effectively wash out the deposit at the filter screen filter front end large granule impurity such as dust, silt, to the washing effect of filter screen best, is favorable to prolonging self-flushing filter element subassembly life, promotes user experience.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is an exploded view of a self-flushing filter cartridge assembly according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of a self-flushing filter cartridge assembly provided by an embodiment of the present application;

FIG. 3 is a water path diagram of a self-flushing filter cartridge assembly according to one embodiment of the present application;

FIG. 4 is a waterway diagram of a self-flushing filter cartridge assembly according to another embodiment of the present application;

FIG. 5 is a waterway view of a self-flushing filter cartridge assembly in use according to yet another embodiment of the present application;

FIG. 6 is a waterway view of a self-flushing filter cartridge assembly flushing state according to still another embodiment of the present application;

FIG. 7 is a schematic diagram of a screen support according to an embodiment of the present disclosure;

fig. 8 is a schematic perspective view of a filter bottle cap according to an embodiment of the present disclosure;

FIG. 9 is a radial cross-sectional view of a filter bottle cap according to an embodiment of the present application;

FIG. 10 is an axial cross-sectional view of a filter cap according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a center tube provided in an embodiment of the present application.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the description of the present application, it is to be understood that the terms "central," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, references to the description of the terms "an aspect," "some aspects," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same solution or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.

Arrows in fig. 3 to 6 indicate flow paths of water.

As shown in fig. 1 to 6, an embodiment of the present application provides a self-flushing filter element assembly, which includes a housing 1, a first waterway, a second waterway, a filter screen 2, and a first filtering unit 3. Wherein, the shell 1 is provided with a raw water port 11, a purified water port 12 and a flushing port 13; the first water channel is arranged in the shell 1, and two ends of the first water channel are respectively communicated with the raw water port 11 and the purified water port 12; the second water path is arranged in the shell 1, and two ends of the second water path are respectively communicated with the raw water port 11 and the flushing port 13. Filter screen 2 and first filter unit 3 set up in casing 1, and filter screen 2 and first filter unit 3 arrange in proper order in first water route along the flow direction in first water route, and filter screen 2's the filter front end intercommunication second water route. The filter screen 2 is used for filtering large-particle substances such as silt, rust and the like in raw water and plays a role in primary coarse filtration; by arranging the filter screen 2 at the upstream of the first filter unit 3, raw water with poor water quality can be coarsely filtered through the filter screen 2 and then filtered through the first filter unit 3, so that the water quality of water flow flowing into the first filter unit 3 is relatively uniform, the first filter unit 3 is protected, the service life of the first filter unit 3 is prolonged, and the user experience is better; but also can expand the range of the raw water quality allowable by the self-washing filter element assembly, has wider applicable area and stronger practicability, and is beneficial to the large-scale popularization and application of water purification products. The filter screen 2 and the first filter unit 3 are integrally installed in the shell 1 to form the composite filter element, so that the water leakage hidden danger at the joint of each part is eliminated, the installation is compact, the structure is simple, the volume of the self-washing filter element assembly is greatly reduced, the whole volume of a water purification product is greatly reduced, the installation space is saved, the occupied kitchen space is reduced, and the requirements of users on high-quality and high-quality life are met; the defects of different filter element replacement periods and troublesome replacement and maintenance are overcome, the filter element replacement times are reduced, the use and maintenance cost of a water purification product is reduced, the use cost of a user is reduced, and the user experience is effectively improved; the self-washing filter element assembly complete machine is provided with only one filter element, the appearance is attractive, resources are saved, the manufacturing cost of the self-washing filter element assembly is reduced, the filter element matching mode is increased, the assembly and disassembly are simple, convenient and fast to replace and maintain, time and labor are saved, the assembly efficiency is high, the use requirement of a user is met, and the user experience is better.

The self-flushing filter cartridge assembly is switchable between a use state and a flushing state; in a use state, as shown by a single-line arrow in fig. 3 and 5 and a solid arrow in fig. 4, the water purifying port 12 is opened, the flushing port 13 is closed, the first water path is conducted, raw water enters the self-flushing filter element assembly from the raw water port 11, flows from the filtering front end to the filtering rear end of the filter screen 2, is filtered by the filter screen 2 to generate coarse filtered water, and the coarse filtered water flows through the first filtering unit 3 and finally flows out from the water purifying port 12 to realize filtering; under the state of washing, as shown by the hollow arrow in fig. 4 and the single-line arrow in fig. 6, water purification mouth 12 is closed, and washing mouth 13 is opened, and the second water route switches on, and raw water gets into from washing filter element group spare from raw water mouth 11, washes filter screen 2 from filter screen 2's filtration front end, washes out the deposit at filter screen 2 filters large granule impurity such as dust, silt, and discharges from washing filter element group spare from washing mouth 13 at last to the realization is to the washing of filter screen 2. Through setting up mutually independent first water route and second water route, do not need dismouting filter screen 2 can realize independently washing filter screen 2, the daily cleanness and the maintenance of being convenient for, the extension is from washing filter element group spare life, eliminate the risk of leaking that the pipeline dismouting brought, realize from washing the function from washing filter element group spare, it is simple and convenient to maintain, the user uses more conveniently, it is laborsaving to save trouble, reduce use cost, fully provided user's user demand, promote user's use and experience. Water purification water route (being first water route) and wash the water route (being the second water route) mutually independent, guarantee the water purification water route and wash the isolation in water route, effectively prevent during filter screen 2's sparge water flows into the water purification water route, avoid the sparge water to the pollution in water purification water route, play the biggest guard action to first filter unit 3, guarantee from the filtration water purification effect of washing filter element group spare, greatly prolong from the life of washing filter element group spare, reduce user use cost, user experience is better. In a specific embodiment, the flushing is electrically controlled, the electrical control of the whole machine can set the flushing time for controlling the flushing electromagnetic valve, or the flushing can be automatically carried out after the water is filtered by counting through a flowmeter, the user does not need to manually flush, and the user experience is better.

In particular, the screen 2 may be a stainless steel mesh. The first filter unit 3 may include a plurality of different types of filter elements, such as a PP cotton (Polypropylene, PP cotton is made of Polypropylene fibers) filter element and a sintered carbon filter element (or a carbon fiber filter element), and may be used as a front-end filter element, which is mainly used for filtering large particulate matters such as silt and rust in water, and residual chlorine, organic matters, bacteria, and the like, and performs a second-stage filtering function. In this embodiment, first filter unit 3 is cotton carbon composite filter core or carbon fiber filter core, can realize the two-stage filtration, and the filter effect is better. The self-flushing filter cartridge assembly further comprises a second filter unit (not shown in the figures) arranged inside the housing 1, the second filter unit being located inside the first water circuit and downstream of the first filter unit 3; the second filtering unit plays a role of third-stage filtering. The filter screen 2, the first filter unit 3 and the second filter unit are integrally installed in the shell 1 to form the composite filter element, so that the water leakage hidden danger at the joint of each part is eliminated, the installation is compact, the structure is simple, the volume of the self-washing filter element assembly is greatly reduced, the overall volume of a water purification product is greatly reduced, the installation space is saved, the occupied kitchen space is reduced, and the requirements of users on high-quality and high-quality life are met; the defects of different filter element replacement periods and troublesome replacement and maintenance are overcome, the filter element replacement times are reduced, the use and maintenance cost of a water purification product is reduced, the use cost of a user is reduced, and the user experience is effectively improved; simultaneously, only one filter element is arranged on the self-washing filter element assembly complete machine, the appearance is attractive, resources are saved, the manufacturing cost of the self-washing filter element assembly is reduced, the filter element matching mode is increased, the assembly and disassembly are simple, convenient and fast to maintain, time and labor are saved, the assembly efficiency is high, the use requirements of users are met, and the user experience is better.

When the self-flushing filter element assembly is used, the filter screen 2, the first filter unit 3 and the second filter unit are used for filtering step by step, and can be used for pretreating inlet water of a rear-end water purifier, so that the service life of a filter element of the rear-end water purifier can be protected and prolonged, and the use cost of the rear-end filter element is reduced; but also can realize the water purification of big flux, reduce use cost, effectively promote the user and use experience. The self-washing filter element component can be used independently as a water purifier, can also be used as a central water purifying device to be directly arranged in a household main pipeline, purifies water for a whole house, can protect the water for the whole house, does not influence the flux requirement of a user, can be used in activities such as washing vegetables and cooking, has an unlimited use range, meets most water requirements of common families, and has better user experience.

In one embodiment, the second filtering unit is a scale inhibition filter element, can effectively remove water alkali scale in water, plays a role in protecting other water treatment equipment connected to the downstream of the self-washing filter element assembly, and prolongs the service life of the water treatment equipment. For example, the scale inhibition filter element can effectively protect a reverse osmosis membrane or an ultrafiltration membrane of the water purifier, and prolong the service life of the reverse osmosis membrane and the ultrafiltration membrane; when the self-washing filter element assembly is used for supplying water to the water heater, scale can be prevented from appearing in the water heater, the problem of water alkali scale in the water heater of a user is solved, internal scaling after the water heater is used for a period of time is avoided, and the service life of the water heater is prolonged.

In another embodiment, the second filtering unit is a bacteriostatic filter element, such as a KDF (copper alloy with high purity, which can remove heavy metal and acid radical ions in water and improve the activation degree of water) filter element, which can play roles of removing residual chlorine, inhibiting microorganism reproduction, reducing scaling, adsorbing heavy metal ions, and the like, effectively improving water quality, achieving a good water purification effect, protecting the health of a user, and improving user experience.

Specifically, 2 axial settings of filter screen are in casing 1, and the flow direction that the filter screen 2 filtered the front end is flowed through in the second water route is on a parallel with the axial of filter screen 2 to filter the front end to filter screen 2 and form the side stream and wash, the scouring force is big, can effectively wash out the deposit at filter screen 2 filters the dust of front end, large granule impurity such as silt, and is better to filter screen 2's washing effect, is favorable to the extension from washing filter element group spare life, promotes user experience.

Specifically, in one embodiment, as shown in fig. 5 and 6, the filter screen 2 is embedded inside the first filtering unit 3, and is annularly overlapped to form a concentric circle type structure, so that the filter screen 2 has a small volume, low cost, simple processing technology and a compact installation structure, the volume of the self-washing filter element assembly is further reduced, the occupied space is reduced, and the installation space is saved; and can inject silt etc. that produce when coarse filtration in 3 inboards in first filter unit, it is more convenient when cleaing away silt, and convenience of customers is manual to be clear away, and the effect is better when washing through washing mouth 13, and clean maintenance is convenient, is favorable to the extension to wash filter element group spare life certainly, and user experience is better.

In another embodiment, as shown in fig. 1 to 4, the first filtering unit 3 is in a hollow cylinder shape and has a filtering direction along the radial direction of the first filtering unit 3, and the filter screen 2 and the first filtering unit 3 are sequentially arranged along the axial direction of the housing 1, so that the filter screen 2 has the advantages of small volume, low cost, simple processing technology, simple and compact structure, convenient and fast assembly and high efficiency, the volume of the self-flushing filter element assembly is further reduced, the occupied space is reduced, and the installation space is saved; and can form two filtration regions in the axial in casing 1, inject silt etc. that produce when coarse filtration in the axial, it is more convenient when driving silt, and convenience of customers is manual to be clear away, and it is better to wash the effect when washing through washing mouth 13, and clean the maintenance is convenient, is favorable to the extension from washing filter element group spare life, and user experience is better.

Specifically, as shown in fig. 1 to 4 and 7, the self-washing filter element assembly further includes a filter screen bracket 4 disposed in the housing 1, and the filter screen 2 is fixedly mounted in the housing 1 through the filter screen bracket 4; a raw water area 101 is defined among the filtering front end of the filter screen 2, the inner wall of the shell 1 and the filter screen bracket 4, the raw water area 101 is communicated with the raw water port 11, and impurities intercepted by the filter screen 2 can be deposited at the bottom of the raw water area 101. The filter screen bracket 4 plays a role in fixing and supporting the filter screen 2, so that the filter screen 2 is prevented from being washed, extruded and deformed by water flow, and the strength and the filtering effect of the filter screen 2 are ensured; and simple structure, convenient assembling is swift efficient, and the dismouting is maintained conveniently, and user experience is better.

In a specific embodiment, a plurality of water passing openings 41 are formed on the circumferential surface of the filter screen bracket 4, the filter screen 2 is sleeved on the filter screen bracket 4, the water passing openings 41 communicate the inner side and the outer side of the filter screen 2 and the filter screen bracket 4, so that filtering areas are formed on the inner side and the outer side of the filter screen 2 respectively, and the filtering front end of the filter screen 2 can be the inner side or the outer side of the filter screen 2. The filter screen support 4 butt plays the effect of sealed filter screen 2 tip in filter screen 2's inner peripheral face, and simple structure is reasonable, and is fixed firm reliable, and sealed effect is better, prevents effectively that the raw water from walking around filter screen 2's tip and getting into filter screen support 4, avoids appearing the phenomenon of raw water and thick drainage cluster water, overflow, guarantees that the raw water passes through filter screen 2 along the filter direction, effectively guarantees filter screen 2's filter effect.

Specifically, in one embodiment, as shown in fig. 1 to 4 and 8 to 10, the inner end surface of the housing 1 is provided with a first annular rib 14 and a second annular rib 15 which are sequentially nested from the center to the outside and extend along the axial direction of the housing 1; filter screen support 4 is connected with second annular muscle 15, and the tip space in casing 1 radially outwards falls into water purification district 102, coarse filtration water district 103 and former water district 101 by the center in proper order along casing 1, and water purification district 102 communicates with water purification mouth 12, and one side that filter screen 2 is close to former water district 101 is filter front end of filter screen 2, and one side that filter screen 2 is close to coarse filtration water district 103 is filter rear end of filter screen 2. In this embodiment, the filter direction of the filter screen 2 is the inboard of the outside flow direction filter screen 2 by the filter screen 2, raw water gets into the filter screen 2 inboard after filter screen 2 filters promptly, the filter screen 2 inboard encloses into coarse filtration water district 103, the filter screen 2 inboard is the filtration rear end of filter screen 2, coarse filtration water district 103 and the filtration front end intercommunication of first filter unit 3, water purification district 102 and the filtration rear end intercommunication of first filter unit 3, thereby constitute the first water route that flows through raw water district 101 in proper order, filter screen 2, coarse filtration water district 103, first filter unit 3, water purification district 102. Waterway structure obtains optimizing, has stopped the production of stagnant water, make full use of filter screen 2 and first filter unit 3's filter area, and filtration efficiency is high, and the filter effect is better, and user experience is better. Filter screen 2 adopts the filter orientation of outside-in, can inject silt etc. that produce when coarse filtration in former water district 101 between the filter screen 2 outside and casing 1, and is more convenient when driving silt, and also convenience of customers manually drives, and the flushing effect is better when washing through washing mouth 13, and clean the maintenance is convenient, is favorable to the extension to wash filter element group spare life certainly, and user experience is better.

Specifically, the inner end surface of the shell 1 is further provided with a third annular rib 16 which is nested on the periphery of the second annular rib 15, the third annular rib 16 extends along the axial direction of the shell 1 and divides the raw water area 101 into a water inlet area 104 and a flushing water area 105, the raw water port 11 is positioned in the water inlet area 104, the filter screen 2 is positioned in the water inlet area 104, and the flushing water area 105 is communicated with the flushing port 13; an overflow part 161 communicating the water inlet area 104 and the flushing water area 105 is formed at one end of the third annular rib 16 close to the screen bracket 4, and the water inlet area 104 and the flushing water area 105 form a second water path. Impurities intercepted by the filter screen 2 can be deposited at the bottom of the raw water area 101, the raw water area 101 is divided into a water inlet area 104 and a flushing water area 105 by arranging a third annular rib 16, the raw water flows to the flushing water area 105 through the water inlet area 104 and then is discharged from a flushing port 13, the filter screen 2 is flushed by the water flow in a lateral flow manner, the water flow is from top to bottom and then from bottom to top, the flow channel is short, the flushing force is large, the siphon force is formed, and the flushing effect on the filter screen 2 is optimal; and second waterway structure obtains optimizing, stops the production of stagnant water, prevents effectively that the sparge water from remaining, and the structure is compacter, and is littleer from the whole volume of washing filter element group spare, saves kitchen installation space. The flow passage portion 161 may be a flow passage gap formed between the end of the third annular rib 16 and the end face of the strainer holder 4, or may be a flow passage notch formed in the third annular rib 16.

Specifically, the portion 161 and former mouth of a river 11 and wash mouth 13 dislocation arrangement in the axial of filter screen 2 overflow, the raw water gets into water district 104 by former mouth of a river 11, axial flow to the portion 161 that overflows along filter screen 2, then get into in the washing water district 105 through the portion 161 that overflows, and again along filter screen 2's axial flow, at last from washing mouth 13 outflow, thereby realize washing the sidestream of filter screen 2, rivers are by going up to down again by going up, the runner is short, the scouring force is big, and form siphon power, can effectively filter the dust of front end at filter screen 2 with the deposit, large granule impurity such as silt washes out, washing effect to filter screen 2 is best, be favorable to prolonging self-washing filter element group spare life, promote user experience.

Specifically, from washing filter element group spare still including the water purification passageway 5 of the nested setting in filter screen 2, water purification passageway 5 one end is connected with first annular muscle 14, the other end and the filtration rear end intercommunication of first filter unit 3, constitutes water purification district 102 in the water purification passageway 5. The filter screen 2 and the water purification channel 5 are annularly overlapped to realize encircling compounding, a concentric circle type structure is formed, the installation structure is compact, the space occupation is reduced, the whole machine volume of the self-washing filter element assembly is reduced, the kitchen installation space is saved, and the user experience is better; and the water purification channel 5 has simple structure, simple processing and low cost. The water purifying channel 5 and the filter screen bracket 4 are respectively connected with the side surfaces of the first annular rib 14 and the second annular rib 15 in a sealing manner, so that the sealing structures are arranged at one end of the shell 1 and are sealed pairwise, the sealing effect is better, water leakage and water overflow are effectively prevented, the water leakage risk is low, the filtering and flushing effects of the self-flushing filter element assembly are ensured, and the service life of the self-flushing filter element assembly is prolonged; and the size chain is good to the degree of control, and the structure is compacter, and the whole volume of self-washing filter element group spare is littleer, saves kitchen installation space, and user experience is better.

In a specific embodiment, as shown in fig. 1 to 3 and 11, the first filtering unit 3 is in a hollow cylinder shape coaxial with the housing 1, the filtering direction of the first filtering unit 3 is along the radial direction of the first filtering unit 3, the filtering front end of the first filtering unit 3 is the outer side wall of the first filtering unit 3, and the first filtering unit 3 has a larger filtering area, so that large-flux purified water can be realized, and the use requirements of users can be met. The self-washing filter element assembly further comprises a central tube 6 which is embedded and arranged inside the first filter unit 3, one end of the central tube 6 is provided with an end cover 61, one end of the end cover 61 is abutted against the bottom end of the filter screen support 4, the other end of the end cover is fixedly and hermetically connected with one end, perpendicular to the filtering direction, of the first filter unit 3, and the central tube 6 is communicated with the filtering rear end of the filter screen 2; the outer side wall of the central tube 6 is spaced from the inner side of the first filter unit 3 to form a secondary filtered water zone 106, and the secondary filtered water zone 106 is communicated with the clean water zone 102. From washing filter element group spare still includes interior base 7, and interior base 7 and the other end fixed sealing connection of first filter element 3 perpendicular to filter direction, the other end and the interior base 7 fixed sealing connection of center tube 6 form the passageway 107 that overflows that feeds through center tube 6 and first filter element 3's filtration front end between interior base 7 and the casing 1. At this moment, the water purification waterway (i.e. the first waterway) sequentially flows through the raw water port 11, the water inlet area 104, the filter screen 2, the coarse filtration water area 103, the central pipe 6, the flow passage 107, the first filtration unit 3, the secondary filtration water area 106, the water purification area 102 and the water purification port 12, two ends of the first filtration unit 3 perpendicular to the filtration direction are respectively fixedly and hermetically connected with the end cover 61 and the inner base 7, and the two ends of the first filtration unit 3 are respectively and fixedly sealed, so that the structure is simple and reasonable, the fixation is firm and reliable, the sealing effect is better, the coarse filtration water is prevented from entering the secondary filtration water area 106 by bypassing the end part of the first filtration unit 3, the water mixing and the water overflowing are effectively prevented, the coarse filtration water is ensured to pass through the first filtration unit 3 along the filtration direction, and the filtration effect of the first; the central tube 6 plays a role in water path distribution, the first water path structure is optimized, the production of dead water is avoided, the filter areas of the filter screen 2 and the first filter unit 3 are fully utilized, the filter efficiency is high, the water purification effect is better, the structure is simple and compact, the processing is simple and low in cost, the volume of the self-washing filter element assembly is greatly reduced, the occupied space is reduced, the installation space is saved, the assembly is convenient and efficient, the disassembly and assembly maintenance are convenient, and the user experience is better.

Specifically, in another embodiment, as shown in fig. 5 and 6, the inner end surface of the housing 1 has a first annular rib 14 and a second annular rib 15 which are arranged in a nested manner from the center to the outside and extend in the axial direction of the housing 1; the end space in the housing 1 is divided into a flushing water area 105, a raw water area 101 and a water purification area 102 from the center to the outside in sequence along the radial direction of the housing 1, the water purification area 102 is communicated with the water purification port 12, and the flushing water area 105 is communicated with the flushing port 13. From washing filter element group spare still includes the flushing pipe way of nested arrangement in filter screen 2, and flushing pipe way one end is connected with first annular muscle 14, the other end and former water district 101 intercommunication, constitutes the washing water district 105 in the flushing pipe to constitute the washing water route (the second water route) that flows through former mouth of a river 11, former water district 101, washing water district 105, washing mouth 13 in proper order. Impurities intercepted by the filter screen 2 are deposited at the bottom of the raw water area 101, separation of washing water and coarse filtering water generated after the filter screen 2 is filtered is realized through a washing pipe (namely a central pipe 6) which is embedded in the filter screen 2, the raw water flows to the washing water area 105 through the raw water area 101 and is discharged from the washing port 13, the filter screen 2 is subjected to lateral flow type washing by water flow, the water flow is from top to bottom and from bottom to top, the flow channel is short, the washing force is large, the siphon force is formed, and the washing effect on the filter screen 2 is optimal; and wash the structure in water route and obtain optimizing, stop the production of stagnant water, prevent effectively that the sparge water from remaining, the structure is compacter, and is littleer from washing the whole volume of filter element group spare, saves kitchen installation space, and user experience is better.

Specifically, as shown in fig. 1 and 8-10, the casing 1 includes filter flask 17 and filter flask lid 18, and filter flask 17 is the open cavity in one end, and filter flask lid 18 and filter flask 17 melt fixed connection and seal uncovered through revolving, simple structure, easy dismounting is swift. The raw water port 11, the water purifying port 12 and the flushing port 13 are all arranged on the filter bottle cover 18, so that the structure is more compact, the integral volume of the filter element assembly is smaller, and the kitchen installation space is saved; and all adopt the inserted bar formula structure, the water route interface of filter element group spare and water route board adopts bayonet joint structure, is different from the disconnect-type helicitic texture or the spiral joint of traditional filter core, and it is convenient that filter element group spare trades the core, labour saving and time saving, and the dismouting is maintained conveniently, and user experience is better.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. A self-flushing filter cartridge assembly, comprising:

the device comprises a shell, a water inlet, a water purifying inlet and a flushing port, wherein the shell is provided with a raw water inlet, a purified water inlet and a flushing port;

the first water channel is arranged in the shell, and two ends of the first water channel are respectively communicated with the raw water port and the purified water port;

the second water channel is arranged in the shell, and two ends of the second water channel are respectively communicated with the original water port and the flushing port; the filter screen and the first filtering unit are arranged in the first water path in sequence along the flowing direction of the first water path, and the filtering front end of the filter screen is communicated with the second water path;

the self-washing filter element assembly can be switched between a use state and a washing state, in the use state, the first water path is communicated, and raw water flows from the front filtering end to the rear filtering end of the filter screen; under the washing state, the second water path is conducted, and the raw water washes the filter screen from the filtering front end of the filter screen.

2. A self-flushing filter cartridge assembly as recited in claim 1,

the filter screen axial setting is in the casing, the second water route flows through the flow direction that the filter screen filtered the front end is on a parallel with the axial of filter screen to it washes to filter the front end formation side flow of filter screen.

3. A self-flushing filter cartridge assembly as recited in claim 1,

the filter screen is embedded in the first filtering unit;

or, first filter unit is hollow tube-shape to have along the radial filter direction of first filter unit, the filter screen with first filter unit follows the axial of casing is arranged in proper order.

4. A self-flushing filter cartridge assembly according to claim 1, 2 or 3,

the self-flushing filter element assembly also comprises a filter screen bracket arranged in the shell, and the filter screen is fixedly arranged in the shell through the filter screen bracket; the filter front end of filter screen the inner wall of casing and enclose into former water district between the filter screen support, former water district with former water mouth intercommunication.

5. A self-flushing filter cartridge assembly as claimed in claim 4,

the inner end face of the shell is provided with a first annular rib and a second annular rib which are sequentially nested from the center to the outside and extend along the axial direction of the shell;

the filter screen support with the second annular muscle is connected, tip space in the casing is followed the radial outside water purification district, coarse filtration water district and of dividing into in proper order by the center of casing and former water district, water purification district with water purification mouth intercommunication, the filter screen is close to one side in former water district does the filtration front end of filter screen, the filter screen is close to one side in coarse filtration water district does the filtration rear end of filter screen.

6. A self-flushing filter cartridge assembly as claimed in claim 5,

the inner end face of the shell is also provided with a third annular rib which is nested on the periphery of the second annular rib, the third annular rib extends along the axial direction of the shell and divides the raw water into a water inlet area and a flushing water area, the raw water inlet is positioned in the water inlet area, the filter screen is positioned in the water inlet area, and the flushing water area is communicated with the flushing port;

and one end of the third annular rib, which is close to the filter screen support, is provided with an overflowing part communicated with the water inlet area and the flushing water area, and the water inlet area and the flushing water area form the second water path.

7. A self-flushing filter cartridge assembly as claimed in claim 6,

the overflowing part, the original water gap and the flushing port are arranged in a staggered mode in the axial direction of the filter screen.

8. A self-flushing filter cartridge assembly as claimed in claim 5,

the self-washing filter element assembly further comprises a water purification channel which is arranged in the filter screen in a sleeved mode, one end of the water purification channel is connected with the first annular rib, and the other end of the water purification channel is communicated with the first filter unit.

9. A self-flushing filter cartridge assembly as claimed in claim 4,

the inner end face of the shell is provided with a first annular rib and a second annular rib which are sequentially nested from the center to the outside and extend along the axial direction of the shell; the end space in the shell is sequentially divided into a flushing water area, the raw water area and a water purifying area from the center to the outside along the radial direction of the shell, the water purifying area is communicated with the water purifying port, and the flushing water area is communicated with the flushing port;

the self-washing filter element assembly further comprises a washing pipeline which is nested in the filter screen, one end of the washing pipeline is connected with the first annular rib, and the other end of the washing pipeline is communicated with the raw water area.

10. A self-flushing filter cartridge assembly according to any one of claims 1 to 3,

the self-flushing filter element assembly further comprises a second filtering unit arranged in the shell, and the second filtering unit is located in the first water path and located at the downstream of the first filtering unit.

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