CN210313759U

CN210313759U - Filter element assembly

Info

Publication number: CN210313759U
Application number: CN201920969524.XU
Authority: CN
Inventors: 朱泽春; 张德知; 马明阳; 姚颖锋; 朱杰
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-04-14
Anticipated expiration: 2029-06-25

Abstract

The application discloses a filter element assembly, which comprises a shell, a filter screen and a first filter unit, wherein the filter screen and the first filter unit are sequentially arranged in the shell along the axial direction of the shell; the filter screen is positioned at the upstream of the first filtering unit along the flow direction of the water channel in the filter element assembly; the filter element assembly further comprises a second filter element located downstream of the first filter element. By arranging the filter screen, the allowable raw water quality range of the 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; the axial complex filter screen is small, with low costs, processing technology is simple, reduces filter element group spare manufacturing cost, and the structure is succinct moreover, and the installation is compact, reduces filter element group spare's volume greatly, saves installation space, and the silt that produces when simultaneously coarse filtration is injectd in the axial, and clean the maintenance is convenient, is favorable to prolonging filter element group spare life, reduces water purification product use maintenance cost, reduces user use cost, effectively promotes user experience.

Description

Filter element assembly

Technical Field

The application belongs to the technical field of water purification equipment, especially, relate to a 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 a 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.

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 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 to change and maintains simple and conveniently, reduces filter element group spare use cost, promotes user's use and experiences.

In order to achieve the purpose, the application provides a filter element assembly which is characterized by comprising a shell, a filter screen and a first filter unit, wherein the filter screen and the first filter unit are sequentially arranged in the shell along the axial direction of the shell; the filter screen is positioned at the upstream of the first filtering unit along the flow direction of the water path in the filter element assembly; the filter element assembly further comprises a second filter element located downstream of the first filter element.

In one example, the filter element assembly further comprises a tube body with one end provided with a water outlet and the other end closed, and the tube wall of the tube body is provided with at least one water inlet hole communicated with the inside of the tube body; the first filtering unit is in a hollow cylinder shape coaxial with the shell, the pipe body is inserted into the first filtering unit, and the first filtering unit is communicated with the water inlet; the second filter unit is disposed within the tube body.

In one example, the housing is further provided with a clean water port; the body includes center tube and water purification pipe, the center tube is located in the first filter unit, water purification pipe nestification sets up in the filter screen, water purification pipe one end with water purification mouth intercommunication, the other end with the center tube intercommunication.

In one example, the central tube is provided with a water trapping area adjacent to the water outlet along the extending direction of the central tube, and the second filter unit is at least partially positioned in the water trapping area.

In one example, the filter cartridge assembly further comprises a screen support sleeve connected to an end of the housing, the screen being mounted on the screen support sleeve.

In one example, the filter screen support sleeve abuts against the inner circumferential surface of the filter screen, and a plurality of water passing openings are formed in the circumferential surface of the filter screen support sleeve.

In one example, the filter element assembly further comprises a water-proof sleeve arranged in the shell, the water-proof sleeve is sleeved outside the filter screen and is connected with the shell; the inner side of the filter screen is communicated with the first filtering unit; the water separating sleeve, the filter screen and the inner side wall of the shell jointly enclose a raw water area, and a raw water port communicated with the raw water area is further arranged on the shell.

In one example, a water diversion rib which surrounds the filter screen and extends along the axial direction of the shell is arranged at the end part in the shell, the water diversion rib divides the raw water area into a water inlet area and a waste water area, and the raw water inlet is positioned in the water inlet area; the shell is also provided with a flushing port communicated with the waste water area.

In one example, the second filter unit is a scale inhibiting filter element which is arranged in the pipe body; or the second filtering unit is a bacteriostatic filter element which is arranged in the pipe body.

In one example, the filter element assembly further comprises a connecting piece, and one end of the first filter unit, which faces away from the filter screen in the axial direction of the shell, is fixedly connected with the connecting piece; the connecting piece deviates from one side of first filter unit has location portion, keep away from in the casing the tip of filter screen has spacing portion, location portion with spacing portion cooperatees to peg graft, with will first filter unit location is installed in the casing.

Through the filter element subassembly that this application provided can bring following beneficial effect:

1. the filter screen is arranged, so that the first filter unit and the second filter unit are protected, the service lives of the first filter unit and the second filter unit are prolonged, the allowable raw water quality range of the 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; the filter screen and the first filter unit are combined along the axial direction of the shell, the filter screen is small in size, low in cost, simple in processing technology, simple in filter element assembly structure and compact in installation, the size of the filter element assembly is greatly reduced, the installation space is saved, the defects that different types of filter elements are different in replacement period and troublesome in 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; two filtering areas can be formed in the axial direction in the shell, so that silt and the like generated in the coarse filtering process are limited in the axial direction, the silt and the like are more conveniently removed, a user can conveniently and manually remove the silt and the like, the cleaning and the maintenance are convenient, the service life of the filter element assembly is prolonged, and the user experience is better; simultaneously, the filter element group complete machine only has a filter core, eliminates the hidden danger of leaking, and the outward appearance is pleasing to the eye, and resources are saved reduces filter element group spare manufacturing cost, increases filter core collocation mode, and the dismouting is changed and is maintained simple convenient and fast, labour saving and time saving, and assembly efficiency is high, satisfies the user to the demand of high-quality, high quality life, and user experience is better.

2. The pipe body is simple in structure, simple to process and low in cost, the first filtering unit, the second filtering unit and the pipe body are overlapped in a multistage surrounding mode through the rings, the filter screen and the first filtering unit are stacked in the axial direction to achieve axial compounding, the mounting structure is compact, the occupied space is reduced, the whole machine volume of the filter element assembly is reduced, the kitchen mounting space is saved, and the user experience is better.

3. Stranded water district can prevent that the water after first filter unit filters from bypassing the direct mouth of a river that reachs of second filter unit, guarantees the water after first filter unit filters and the abundant contact of second filter unit, make full use of second filter unit's filter area, and filtration efficiency is higher, and the filter effect is better, and user experience is better.

4. The filter screen support sleeve plays a role in fixing and supporting the filter screen, so that the filter screen is prevented from being washed, extruded and deformed by water flow, and the strength and the filtering effect of the filter screen are ensured; and simple structure, convenient assembling is swift efficient, and the dismouting is maintained conveniently, and user experience is better.

5. The filter screen supports the cover butt in the inner peripheral face of filter screen, plays the effect of sealed filter screen tip, and simple structure is reasonable, and is fixed firm reliable, and sealed effect is better, prevents effectively that the raw water from walking around the tip entering filter screen of filter screen and supports the cover, avoids appearing raw water and the phenomenon of the thick filtration water cluster of one-level, overflow, effectively guarantees the filter effect of filter screen.

6. Through the arrangement of the flushing port, the filter screen can be independently flushed without being disassembled and assembled, the service life of the filter element assembly is prolonged, the water leakage risk caused by pipeline disassembly and assembly is eliminated, the filter element assembly realizes a self-flushing function, the use of a user is more convenient and quicker, the maintenance is simple and convenient, trouble and labor are saved, the use cost is reduced, the use requirement of the user is fully met, and the use experience of the user is improved; separate into district and waste water district with the raw water district through setting up the water diversion muscle, realize that the rivers erode the side flow formula of filter screen, the runner is short, the scouring force is big, and forms rainbow suction, and is best to the washing effect of filter screen, washes waterway structure and obtains optimizing, stops the production of stagnant water, prevents effectively that the sparge water from remaining, and the structure is compacter, and the whole volume of filter element group spare is littleer, saves kitchen installation space.

7. The scale inhibition filter element can effectively remove the water alkali scale in the water, protect other water treatment equipment connected to the downstream of the filter element component and prolong the service life of the water treatment equipment; the bacteriostatic filter element can play the roles of removing residual chlorine, inhibiting microorganism propagation, reducing scale formation, adsorbing heavy metal ions and the like, effectively improves water quality, has a good water purification effect, protects the health of a user, and has better user experience.

8. Location portion cooperatees with spacing portion and pegs graft, simple structure, and the installation is swiftly convenient, improves assembly efficiency, and the dismouting is maintained conveniently, and user experience is better.

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 a perspective cross-sectional view of a filter assembly according to one embodiment of the present application;

FIG. 2 is a cross-sectional view of an alternative perspective of a filter cartridge assembly according to one embodiment of the present application;

FIG. 3 is a water flow diagram of a filter cartridge assembly according to one embodiment of the present application;

FIG. 4 is an exploded view of a filter cartridge assembly according to one embodiment of the present application;

FIG. 5 is a cross-sectional view of a filter cap according to one embodiment of the present application;

FIG. 6 is a cross-sectional view of a filter cap according to another embodiment of the present application;

FIG. 7 is a perspective cross-sectional view of a filter assembly according to another embodiment of the present application;

FIG. 8 is a cross-sectional view of another perspective of a filter cartridge assembly according to another embodiment of the present application;

FIG. 9 is a perspective cross-sectional view of a filter assembly according to yet another embodiment of the present application;

FIG. 10 is a cross-sectional view from another perspective of a filter cartridge assembly according to yet another embodiment of the present application;

FIG. 11 is an exploded view of a filter cartridge assembly according to yet another embodiment of the present application;

fig. 12 is a cross-sectional view of a filter cap according to yet another 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.

The solid arrows and hollow arrows in fig. 3 indicate the flow paths of water.

As shown in fig. 1 to 12, an embodiment of the present application provides a filter element assembly, which includes a housing 1, a filter screen 2, a first filter unit 3, and a second filter unit (not shown). The filter screen 2 and the first filter unit 3 are sequentially arranged in the shell 1 along the axial direction of the shell 1, and the second filter unit is arranged in the shell 1; and along the water route flow direction in the filter element group spare, filter screen 2 is located the upstream of first filter unit 3, and the second filter unit is located the low reaches of first filter unit 3. 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 and the second filter unit, so that the water quality of water flow flowing into the first filter unit 3 and the second filter unit is relatively uniform, the first filter unit 3 and the second filter unit are protected, the service lives of the first filter unit 3 and the second filter unit are prolonged, and the user experience is better; but also can enlarge the range of the raw water quality allowable by the filter element component, 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, 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 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; simultaneously, the filter element group spare complete machine only has a filter core, and the outward appearance is pleasing to the eye, and resources are saved reduces filter element group spare manufacturing cost, increases filter core collocation mode, and the dismouting is changed and is maintained simple convenient and fast, labour saving and time saving, and assembly efficiency is high, satisfies user demand, and user experience is better. Because the filter screen 2 and the first filtering unit 3 are compounded along the axial direction of the shell 1, the filter screen 2 has small volume, low cost and simple processing technology, the volume of the filter element component is further 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 etc. convenience of customers is manual to be driven, and clean the maintenance is convenient, is favorable to prolonging filter element group spare life, and 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 second filtering unit plays a role of third-stage filtering. When the 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 used for pretreating inlet water of the 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 filter element group spare can regard as water purifier independent utility, also can regard as central water purification unit directly to arrange the trunk line of registering one's residence in, purifies the whole house water, can protect the whole house pipeline, does not influence user's flux requirement moreover, can be used in activities such as washing dish, cooking, and application range is unrestricted, satisfies the most water demand of ordinary family, and user experience is better.

In one embodiment, the second filter 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 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 using filter element group spare to supply water for the water heater, can prevent to appear the incrustation scale in the water heater, solve the water alkali incrustation scale problem among the user's water heater, avoid the water heater to use inside scale deposit after a period, extension water heater life.

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, the filter element assembly further comprises a tube body 4 with one end provided with a water outlet 41 and the other end closed, and the wall of the tube body 4 is provided with at least one water inlet 42 communicated with the interior of the tube body 4. The first filtering unit 3 is in a hollow cylinder shape coaxial with the shell 1, and the filtering direction of the first filtering unit 3 is along the radial direction of the first filtering unit 3; the pipe body 4 is inserted in the first filtering unit 3, and the first filtering unit 3 is communicated with the water inlet 42; the second filter unit sets up in body 4, and the filter core that hinders dirty promptly or bacteriostatic filter core installs in body 4, and the second filter unit nestification sets up inside first filter unit 3. The first filtering unit 3, the second filtering unit and the pipe body 4 are annularly overlapped to realize multi-stage surrounding compounding to form a concentric circle type structure, and the filter screen 2 and the first filtering unit 3 are axially stacked to realize axial compounding, so that the multi-stage surrounding compounding and the axial compounding are combined to realize 3-stage and 4-stage compound filtering of the filter element assembly, the mounting structure is compact, the space occupation is reduced, the whole machine volume of the filter element assembly is reduced, the kitchen mounting space is saved, and the user experience is better; and the pipe body 4 has simple structure, simple processing and low cost.

Specifically, a water purifying port 11 is arranged on the shell 1; the pipe body 4 comprises a central pipe 43 and a purified water pipe 44, the central pipe 43 is positioned in the first filtering unit 3, the purified water pipe 44 is embedded in the filter screen 2, one end of the purified water pipe 44 is communicated with the purified water port 11, and the other end of the purified water pipe 44 is communicated with the central pipe 43. The water outlet 41 is positioned at one end of the water purifying pipe 44 and is connected with the water purifying port 11, the other end of the water purifying pipe 44 is connected with one end of the central pipe 43, the other end of the central pipe 43 is closed, the water inlet hole 42 is formed in the side wall of the central pipe 43, and the first filtering unit 3 is communicated with the inside of the central pipe 43 through the water inlet hole 42; thereby forming a purified water path which sequentially passes through the filter screen 2, the first filter unit 3, the central pipe 43, the second filter unit, the purified water pipe 44 and the purified water port 11. When the filter element assembly is used for purifying water, raw water is filtered by the filter screen 2 and then reaches the periphery of the first filter unit 3, is filtered by the first filter unit 3 and then enters the central pipe 43 from the water inlet 42 on the pipe wall of the central pipe 43, is filtered by the second filter unit in the central pipe 43 and then enters the purified water pipe 44, and finally flows out through the purified water port 11 to realize filtration; waterway structure obtains optimizing, has stopped the production of stagnant water, make full use of filter screen 2, first filter unit 3 and second filter unit's filter area, and filtration efficiency is high, and the filter effect is better, and user experience is better.

Specifically, along the extending direction of center tube 43, center tube 43 is equipped with the stranded water district 431 that is close to delivery port 41, the second filter unit is located stranded water district 431 at least partially, and there is not inlet opening 42 in the stranded water district 431, can prevent that the water after first filter unit 3 filters from bypassing the direct water purification mouth 11 of second filter unit, guarantee that the water after first filter unit 3 filters fully contacts with second filter unit, make full use of second filter unit's filter area, filtration efficiency is higher, the filter effect is better, user experience is better. In one particular embodiment, the water trapping region 431 occupies a portion 1/3 of the center tube 43 adjacent to one end of the outlet 41; the scale inhibiting material or KDF bacteriostatic material is filled and fully compressed in the central tube 43, so that the service lives of the scale inhibiting material and the KDF bacteriostatic material are effectively prolonged; one end of the water purifying pipe 44 is welded with the non-woven fabric through ultrasonic wave, and then is welded with the central pipe 43 through ultrasonic wave, so that the scale inhibiting material or KDF bacteriostatic material is prevented from leaking.

Specifically, the filter core assembly further includes a screen support sleeve 5, the screen support sleeve 5 being connected with an end of the housing 1, and the screen 2 being mounted on the screen support sleeve 5, thereby forming filtering areas at an inner side and an outer side of the screen 2, respectively. The filter screen support sleeve 5 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.

Specifically, the filter screen supports 5 butts in the interior circumference of filter screen 2, plays the effect of sealed filter screen 2 tip, and simple structure is reasonable, and is fixed firm reliable, and sealed effect is better, prevents effectively that the raw water from walking around the tip entering filter screen that filter screen 2 supports 5 in, avoids appearing the phenomenon of raw water and the thick cross water stream of one-level, overflow, guarantees that the raw water passes through filter screen 2 along the filter direction to effectively guarantee filter screen 2's filter effect. The circumferential surface of the filter screen supporting sleeve 5 is provided with a plurality of water passing holes 51 for communicating the inner side and the outer side of the filter screen 2 and the filter screen supporting sleeve 5.

Specifically, the filter element assembly further comprises a water-stop sleeve 6 arranged in the shell 1, and the water-stop sleeve 6 is sleeved outside the filter screen 2 and is connected with the shell 1; the inner side of the filter screen 2 is communicated with the first filtering unit 3; the water separating sleeve 6, the filter screen 2 and the inner side wall of the shell 1 enclose a raw water area 101, and the shell 1 is further provided with a raw water port 12 communicated with the raw water area 101. In this embodiment, the filtering direction of the filter screen 2 is from the outside of the filter screen 2 to the inside of the filter screen 2, that is, the raw water is filtered by the filter screen 2 and then enters the inside of the filter screen support sleeve 5, the inside of the filter screen support sleeve 5 and the inner wall of the end portion of the housing 1 jointly enclose a primary coarse filtering water area 102, and the primary coarse filtering water area 102 is communicated with the filtering front end of the first filtering unit 3 (i.e., the outer side wall of the first filtering unit 3). Filter screen 2 adopts the filter orientation of outside-in, can inject silt that produces when coarse filtration etc. in the raw water district 101 between the filter screen 2 outside and water proof cover 6, and is more convenient when cleaing away silt etc., and convenience of customers is manual to be clear away, and clean maintenance is convenient, and user experience is better.

Specifically, in one embodiment, as shown in fig. 1 to 5, the water-stop sleeve 6 is fixedly and hermetically connected with the end portion of the housing 1, a water diversion rib 13 surrounding the filter screen 2 and extending along the axial direction of the housing 1 is further disposed at the end portion inside the housing 1, the water diversion rib 13 divides the raw water area 101 into a water inlet area 103 and a waste water area 104, and the raw water port 12 is located inside the water inlet area 103; the housing 1 is further provided with a flushing port 14 communicated with the waste water area 104, so that a flushing waterway which sequentially flows through the raw water port 12, the water inlet area 103, the waste water area 104 and the flushing port 14 is formed. Through setting up washing mouth 14, do not need dismouting filter screen 2 can realize independently washing filter screen 2, extension filter element group spare life eliminates the risk of leaking that the pipeline dismouting brought, and filter element group spare realizes from the washing function, and the user uses convenient and fast more, maintains simple and conveniently, saves trouble laborsavingly, reduces use cost, and fully provided user's user demand promotes user's use and experiences. 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 103 and a waste water area 104 by arranging a water dividing rib 13, the raw water flows to the waste water area 104 through the water inlet area 103 and then is discharged from the flushing port 14, the filter screen 2 is flushed in a lateral flow mode through water flow, 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 the structure of washing the water route obtains optimizing, stops the production of stagnant water, prevents effectively that the sparge water from remaining, and the structure is compacter, and the whole volume of filter element group spare is littleer, saves kitchen installation space. The water purification water route with wash the water route mutually independent, guarantee the water purification water route and wash the isolation in water route, effectively prevent that the sparge water through filter screen 2 from flowing into the water purification water route, avoid the pollution of sparge water to the water purification water route, play the biggest guard action to first filter unit 3 and second filter unit, guarantee the filtration water purification effect of filter element group spare, greatly prolong the life of filter element group spare, reduce user use cost, user experience is better.

The filter element assembly of the present application is capable of being switched between a flushing state and a use state. In the use state, as shown by a solid arrow in fig. 3, the water purification port 11 is opened, the flushing port 14 is closed, and the filter screen 2 is communicated with the water purification waterway; raw water enters a water inlet area 103 in the filter element assembly from a raw water port 12, is filtered by a filter screen 2 to generate primary coarse filtering water, and flows out to a primary coarse filtering water area 102 and further reaches the periphery of a first filtering unit 3; the first-stage coarse filtered water is filtered by the first filtering unit 3 to generate second-stage filtered water, the second-stage filtered water enters the central pipe 43 through the water inlet holes 42 on the pipe wall of the central pipe 43, then enters the water purifying pipe 44 after being filtered by the second filtering unit, and finally flows out of the water purifying port 11 to realize filtering. In a flushing state, as shown by hollow arrows in fig. 3, the water purification port 11 is closed, the flushing port 14 is opened, and the filter screen 2 is communicated with a flushing waterway; raw water gets into the district 103 of intaking in the filter core subassembly from former water mouth 12, and rivers can not flow to filter rear end (being inboard) of filter screen 2, but erode filter screen 2's filtration front end (being the outside), and the large granule impurity such as dust, silt that will deposit at filter screen 2 filtration front end washes out to waste water district 104, at last from washing a mouthful 14 discharge filter core subassemblies to the realization is to filter screen 2 wash. 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 another embodiment, as shown in fig. 6 to 8, the periphery of the bottom of the water-blocking sleeve 6 is provided with an annular convex rib 61 protruding out of the outer side wall of the water-blocking sleeve 6, the annular convex rib 61 is fixedly and hermetically connected with the inner side wall of the housing 1, so that the outer side wall of the water-blocking sleeve 6, the inner wall of the housing 1 and the annular convex rib 61 jointly enclose a flushing water area 105, the flushing port 14 is communicated with the flushing water area 105, and the flushing water area 105 is communicated with the raw water area 101, thereby forming a flushing water path which sequentially flows through the raw water port 12, the raw water area 101, the flushing water area 105 and the flushing port 14, realizing the division of the flushing water and the primary coarse filtering water generated after the filtering of the filter screen 2.

In yet another embodiment, as shown in fig. 9-12, the filter element assembly further includes a water dividing sleeve 7, the water dividing sleeve 7 is disposed between the filter screen 2 and the water blocking sleeve 6, and both the water blocking sleeve 6 and the water dividing sleeve 7 are fixedly and hermetically connected with the end of the housing 1; the bottom of the water distribution sleeve 7 is provided with a flushing flow passage 71, and the water-stop sleeve 6 is connected with the water distribution sleeve 7 by adopting an annular groove position. The water dividing sleeve 7 can also divide the raw water area 101 into a water inlet area 103 and a waste water area 104, and can also prevent flushing water from flowing out of the upper part of the water dividing sleeve 7, so that the flushing effect cannot be achieved, no requirement is made on whether the bottom is completely sealed, and only the requirement of fixed assembly is met. The upper part of the filter screen support sleeve 5 is also provided with a positioning support part 52 which is abutted with the water distribution sleeve 7 to play a positioning support role and prevent the water distribution sleeve 7 from being inclined during assembly.

Specifically, as shown in fig. 1 to 12, the filter element assembly further includes a connecting member 8, and one end of the first filtering unit 3, which is away from the filter screen 2 along the axial direction of the housing 1, is fixedly connected to the connecting member 8; one side that connecting piece 8 deviates from first filter unit 3 has location portion 81, and the tip of keeping away from filter screen 2 in casing 1 has spacing portion 15, and location portion 81 cooperatees with spacing portion 15 and pegs graft to install first filter unit 3 location in casing 1, simple structure, the installation is swift convenient, improves assembly efficiency, and the dismouting is maintained conveniently, and user experience is better. For example, the positioning portion 81 may be an annular positioning rib, and the limiting portion 15 is a limiting groove.

In a specific embodiment, the housing 1 comprises a filter bottle 16 and a filter bottle cap 17, the filter bottle 16 is a hollow cavity with an open end, and the filter bottle cap 17 and the filter bottle 16 are fixedly connected through rotation and melting and seal the open end, so that the structure is simple, and the assembly and disassembly are convenient and rapid. The water purifying port 11, the original water port 12 and the flushing port 14 all adopt an inserted rod type structure, the filter element assembly and the waterway interface of the water circuit board adopt an inserted clamping structure, are different from a separated thread structure or a spiral clamping structure of a traditional filter element, and are also provided with a handle 18 on the shell 1, so that the filter element assembly is convenient to replace the filter element, time and labor are saved, and the disassembly and the assembly are convenient to maintain. The water purifying port 11, the raw water port 12 and the flushing port 14 are all arranged on the filter flask cover 17, a plurality of annular connecting ribs 171 which are arranged in a nested manner are arranged on the inner end face of the filter flask cover 17, and the water purifying pipe 44, the filter screen supporting sleeve 5, the water resisting sleeve 6 and the water dividing sleeve 7 are respectively in sealing connection with the side faces of the annular connecting ribs 171, so that sealing structures are all arranged at one end of the shell 1 and are sealed pairwise, the sealing effect is better, water leakage and overflow are effectively prevented, the water leakage risk is low, the filtering and flushing effects of the filter element assembly are ensured, and the service life of the 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 filter element group spare is littleer, saves kitchen installation space, and user experience is better. And a sealing ring 9 can be arranged between the water purifying pipe 44, the filter screen supporting sleeve 5, the water resisting sleeve 6, the water separating sleeve 7 and the annular connecting rib 171, so that water leakage and overflow are further prevented, the sealing effect is good, the structure is simple, and the cost is low.

When the filter element assembly is assembled, the first filter unit 3 and the connecting piece 8 are connected and assembled by adopting a glue dispensing process, and the end part of the first filter unit 3 is fixedly connected with the connecting piece 8 in a sealing way by using hot melt adhesive, so that the sealing connection area is increased, the sealing effect is better, the connection is firm and reliable, the phenomena of water leakage and water overflow are effectively prevented, the filter effect is ensured, and the reliability is high; then the assembled central tube 43 and the water purification tube 44 are inserted into the center of the first filter unit 3, and the upper end cover 10 is connected to the upper part of the first filter unit 3, and the first filter unit 3 and the upper end cover 10 are connected and assembled by the same glue dispensing process. The filter screen 2 is sleeved on the filter screen support sleeve 5, and the upper part and the lower part of the filter screen 2 and the filter screen support sleeve 5 are sealed by sealing rings to prevent water from flowing; then the water-proof sleeve 6 is sleeved in, and the lower parts of the water-proof sleeve 6 and the filter screen supporting sleeve 5 are sealed by adopting a side sealing ring. And sleeving an assembly body of the assembled water separation sleeve 6 and the filter screen support sleeve 5 above the first filtering unit 3, nesting and assembling the filter screen support sleeve 5 and the purified water pipe 44, and sealing the side surface by using a sealing ring. The assembled filter screen 2 and the first filter unit 3 are assembled in the filter bottle 16, and the positioning part 81 on the connecting piece 8 and the limiting part 15 at the bottom of the filter bottle 16 are used for inserting assembly. And finally, the filter bottle cap 17 and the filter bottle 16 are welded in a rotary melting mode, the water purifying pipe 44, the filter screen support sleeve 5, the water stop sleeve 6 and the water distribution sleeve 7 are respectively connected with the side face of each annular connecting rib 171 in a sealing mode, and a water purifying area 106, a primary coarse filter water area 102, a water inlet area 103 and a waste water area 104 are respectively formed.

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

1. The filter element assembly is characterized by comprising a shell, a filter screen and a first filter unit, wherein the filter screen and the first filter unit are sequentially arranged in the shell along the axial direction of the shell;

the filter element assembly is characterized by further comprising a second filtering unit arranged in the shell, the second filtering unit is arranged in the shell, the waterway flowing direction in the filter element assembly is followed, the filter screen is positioned on the upstream of the first filtering unit, and the second filtering unit is positioned on the downstream of the first filtering unit.

2. The filter element assembly according to claim 1,

the filter element assembly also comprises a tube body with one end provided with a water outlet and the other end closed, and the tube wall of the tube body is provided with at least one water inlet hole communicated with the inside of the tube body;

the first filtering unit is in a hollow cylinder shape coaxial with the shell, the pipe body is inserted into the first filtering unit, and the first filtering unit is communicated with the water inlet; the second filter unit is disposed within the tube body.

3. The filter element assembly according to claim 2,

a water purifying port is arranged on the shell; the body includes center tube and water purification pipe, the center tube is located in the first filter unit, water purification pipe nestification sets up in the filter screen, water purification pipe one end with water purification mouth intercommunication, the other end with the center tube intercommunication.

4. A filter element assembly according to claim 3,

along the extending direction of the central tube, the central tube is provided with a water trapping area adjacent to the water outlet, and the second filter unit is at least partially positioned in the water trapping area.

5. The filter element assembly according to claim 1,

the filter element assembly further comprises a filter screen supporting sleeve, the filter screen supporting sleeve is connected with the end of the shell, and the filter screen is installed on the filter screen supporting sleeve.

6. A filter element assembly according to claim 5,

the filter screen support sleeve is abutted against the inner circumferential surface of the filter screen, and a plurality of water passing openings are formed in the circumferential surface of the filter screen support sleeve.

7. A filter element assembly according to any one of claims 1 to 6,

the filter element assembly also comprises a water isolating sleeve arranged in the shell, and the water isolating sleeve is sleeved outside the filter screen and is connected with the shell; the inner side of the filter screen is communicated with the first filtering unit;

the water separating sleeve, the filter screen and the inner side wall of the shell jointly enclose a raw water area, and a raw water port communicated with the raw water area is further arranged on the shell.

8. The filter element assembly according to claim 7,

the end part in the shell is provided with a water diversion rib which surrounds the filter screen and extends along the axial direction of the shell, the water diversion rib divides the raw water area into a water inlet area and a waste water area, and the raw water port is positioned in the water inlet area;

the shell is also provided with a flushing port communicated with the waste water area.

9. A filter element assembly according to any one of claims 2 to 6,

the second filtering unit is a scale inhibition filter element which is arranged in the pipe body;

or the second filtering unit is a bacteriostatic filter element which is arranged in the pipe body.

10. A filter element assembly according to any one of claims 1 to 6,

the filter element assembly further comprises a connecting piece, and one end, deviating from the filter screen, of the first filter unit along the axial direction of the shell is fixedly connected with the connecting piece;

the connecting piece deviates from one side of first filter unit has location portion, keep away from in the casing the tip of filter screen has spacing portion, location portion with spacing portion cooperatees to peg graft, with will first filter unit location is installed in the casing.