CN210528613U - Composite filter element assembly and water purification system - Google Patents

Abstract

The utility model relates to a compound filter element group spare and water purification system, wherein it includes the bottle to accord with filter element group spare, be equipped with first segmentation in the bottle, be used for with the inner chamber of bottle is cut apart into preliminary treatment cavity and aftertreatment cavity in the axial, be equipped with at least two-stage filter core in the preliminary treatment cavity, be equipped with meticulous filter core and rearmounted function filter core in the aftertreatment cavity, process the preliminary treatment water that the filter core filtered the acquisition in the preliminary treatment cavity can get into process in proper order among the aftertreatment cavity meticulous filter core filters with rearmounted function filter core. At least four stages of filter elements are integrated in the bottle body, and the filter element for pretreatment and the filter element for post-treatment are respectively arranged in the pretreatment cavity and the post-treatment cavity which are formed by cutting, so that the water production quality is improved, and the volume of the whole machine is reduced.

Description

Composite filter element assembly and water purification system

Technical Field

The utility model relates to a water purification field especially relates to a compound filter element group spare and water purification system.

Background

Along with the improvement of living standard of people, the requirement on the water quality of drinking water is higher and higher. Therefore, the raw water is treated by a multi-stage filter element to meet the high quality requirement. The traditional mode is that establish ties multistage filter core in water purification system, and a filter core corresponds and sets up in a bottle, and the structure of so whole system is huge, and is higher to the installation space requirement, and the cost is great. Therefore, how to reduce the structural size of the whole machine is very important under the condition of ensuring the water quality.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a composite filter element assembly and a water purification system to reduce the overall structural size while ensuring water quality.

The utility model provides a compound filter element group spare, includes the bottle, be equipped with first segmentation piece in the bottle, be used for with the inner chamber of bottle is split into preliminary treatment cavity and aftertreatment cavity in the axial, be equipped with at least two-stage filter core in the preliminary treatment cavity, be equipped with meticulous filtration filter core and rearmounted function filter core in the aftertreatment cavity, process the preliminary treatment water that the filter core filtered the acquisition in the preliminary treatment cavity can get into process in proper order in the aftertreatment cavity meticulous filtration filter core and rearmounted function filter core filter.

Above-mentioned scheme provides a compound filter element group spare, through inciting somebody to action the inner chamber of bottle is cut apart in the axial and is become preliminary treatment cavity and aftertreatment cavity, then set up two-stage filter core at least in the preliminary treatment cavity, carry out the preliminary treatment, will meticulous filter core and rearmounted function filter core setting in the aftertreatment cavity, the process preliminary treatment water that the filter core filtered the acquisition among the preliminary treatment cavity then gets into among the aftertreatment cavity, the process meticulous further filtration filter core and rearmounted function filter core obtain the pure water. Thereby will at least four grades of filter cores integration be in the bottle, and carry out the filter core of preliminary treatment and carry out the filter core of aftertreatment and set up respectively in the above-mentioned preliminary treatment cavity and the aftertreatment cavity of cutting apart the formation, improve the product water quality, reduce complete machine volume.

In one embodiment, the post-functional filter element includes a first post-treatment filter element and a second post-treatment filter element, the fine filter element is inserted into the post-treatment cavity, the first post-treatment filter element and the second post-treatment filter element are both inserted into the fine filter element, and the first post-treatment filter element and the second post-treatment filter element are sequentially distributed in the axial direction of the bottle body.

In one embodiment, be equipped with the aftertreatment center tube in the aftertreatment cavity, meticulous filtering core cover is established outside the aftertreatment center tube, first aftertreatment filter core with the second aftertreatment filter core is located in the aftertreatment center tube, first aftertreatment filter core with the second aftertreatment filter core is in the axial of aftertreatment center tube distributes in proper order, the second aftertreatment filter core is located first aftertreatment filter core is kept away from one side of first partition member, gets into the preliminary treatment water in the aftertreatment cavity can pass through in proper order meticulous filtering core, first aftertreatment filter core and the second aftertreatment filter core form the pure water after filtering.

In one embodiment, a second dividing member for dividing the first aftertreatment filter element from the second aftertreatment filter element is arranged in the aftertreatment center tube, a first water guide hole for communicating a water production cavity of the first aftertreatment filter element with a water inlet of the second aftertreatment filter element is formed in the second dividing member, a water outlet of the aftertreatment center tube is communicated with a water outlet of the second aftertreatment filter element, a water guide hole is formed in a part, corresponding to the first aftertreatment filter element, of the aftertreatment center tube, and the bottom end of the aftertreatment center tube abuts against the first dividing member.

In one embodiment, a third dividing member for dividing the first post-treatment filter element from the second post-treatment filter element is arranged in the post-treatment central tube, a second water guide hole for communicating a water production cavity of the first post-treatment filter element with a water inlet of the second post-treatment filter element is formed in the third dividing member, a water outlet of the post-treatment central tube is communicated with a water outlet of the second post-treatment filter element, a groove is formed in the outer wall of the post-treatment central tube and used for forming a water flow path with the fine filter element, a water delivery path is formed in the tube wall of the post-treatment central tube, one end of the water delivery path is communicated with the water flow path, the other end of the water delivery path penetrates through the bottom end face of the post-treatment central tube, a post-treatment lower cover is arranged at the bottom end face of the post-treatment central tube, and the post-treatment lower cover is arranged at an interval, the inner wall of the post-treatment central pipe and the first post-treatment filter element are arranged at intervals.

In one embodiment, a first sealing element is arranged between the outer wall of the central aftertreatment pipe and the lower aftertreatment cover, and an abutting block is arranged between the bottom end face of the central aftertreatment pipe and the lower aftertreatment cover.

In one embodiment, a second seal is disposed between the third divider and the inner wall of the central aftertreatment tube.

In one embodiment, an auxiliary sleeve is inserted into the post-treatment cavity, the outer wall of the fine filtering filter element and the bottle body are arranged at intervals, the auxiliary sleeve is sleeved outside the fine filtering filter element, the bottom wall of the auxiliary sleeve is provided with an auxiliary through hole, one end of the post-treatment central pipe, which is provided with a water outlet, passes through the auxiliary through hole and then is communicated with the pure water outlet of the bottle body, the auxiliary sleeve is arranged at intervals with the top end of the post-treatment central pipe and the fine filtering element, a saline water sealing ring is arranged between the auxiliary sleeve and the outer wall of the fine filtering filter element to divide a gap between the fine filtering filter element and the bottle body into a pretreatment water pressurizing cavity and a concentrated water cavity, the concentrated water cavity is communicated with a concentrated water outlet of the bottle body, and a gap communicated with an aftertreatment water inlet of the bottle body and the pretreated water pressurization cavity is formed between the auxiliary sleeve and the bottle body.

In one embodiment, the wall of the auxiliary sleeve is provided with a water chute arranged along the axial direction, and the water chute is communicated between the post-treatment water inlet and the pre-treatment water pressurizing cavity.

In one embodiment, the fine filtration filter core is a roll-type reverse osmosis filter core or a roll-type nanofiltration filter core, the first post-treatment filter core is a sintered carbon rod, and the second post-treatment filter core is a microfiltration membrane filter core or an ultrafiltration membrane filter core.

In one embodiment, the first dividing member is a pretreatment upper cover covering the filter element in the pretreatment cavity, and a third sealing member is arranged between the pretreatment upper cover and the bottle body.

In one embodiment, a first pretreatment filter element and a second pretreatment filter element are arranged in the pretreatment cavity, the first pretreatment filter element is sleeved outside the second pretreatment filter element, and raw water entering from a raw water inlet of the bottle body sequentially passes through the first pretreatment filter element and the second pretreatment filter element to be filtered to form pretreated water.

In one embodiment, the first pretreatment filter element is a spray-melt PP cotton filter element or a folded paper PP cotton filter element, and the second pretreatment filter element is a sintered carbon rod.

In one embodiment, the bottle body comprises a bottle body and a bottle end cap, the bottle end cap is arranged at one end of the bottle body to form the pretreatment cavity, the raw water inlet and the pretreatment water outlet of the bottle body are both arranged on the bottle end cap, a pretreatment lower cap is arranged between the end surface of the first pretreatment filter element and the bottle end cap, the pretreatment lower cap is arranged at the end parts of the first pretreatment filter element and the second pretreatment filter element, the pretreatment lower cap and the bottle end cap are arranged at intervals, the outer side wall of the first pretreatment filter element and the bottle body are arranged at intervals, an installation through hole is arranged on the pretreatment lower cap, the side wall forming the installation through hole extends to be communicated with the pretreatment water outlet, a pretreatment central tube is inserted into the installation through hole, and the pretreatment central tube extends to the second pretreatment filter element, or cover under the preliminary treatment and be equipped with the installation through-hole, the plug-in preliminary treatment center tube that is equipped with in the installation through-hole, the lower extreme of preliminary treatment center tube passes the installation through-hole extend to with preliminary treatment delivery port intercommunication, the upper end of preliminary treatment center tube extends to in the second preliminary treatment filter core, or cover under the preliminary treatment and be equipped with the installation through-hole, the plug-in preliminary treatment center tube that is equipped with in the installation through-hole, the preliminary treatment center tube extends to in the second preliminary treatment filter core, the installation through-hole with the intercommunication has the auxiliary tube between the preliminary treatment delivery port.

In one embodiment, the pretreatment center tube is spaced apart from the second pretreatment filter element, and the pretreatment center tube extends to a position close to the first partition.

In one embodiment, a supporting bump is arranged between the lower pretreatment cover and the bottle end cover.

In one embodiment, the sidewall forming the installation through hole is inserted into the pretreatment water outlet, and a fourth sealing member is arranged between the sidewall forming the installation through hole and the bottle end cap, or the lower end of the pretreatment center tube is inserted into the pretreatment water outlet, and a fourth sealing member is arranged between the pretreatment center tube and the bottle end cap, or the auxiliary tube is inserted into the pretreatment water outlet, and a fourth sealing member is arranged between the auxiliary tube and the bottle end cap.

In one embodiment, a raw water inlet and a pretreatment water outlet on the bottle body are arranged at one end, a post-treatment water inlet, a pure water outlet and a concentrated water outlet on the bottle body are arranged at the other end, the raw water inlet is provided with a one-way check valve, the water outlet of the one-way check valve faces the inside of the pretreatment cavity, and the pretreatment water outlet is provided with a water stop valve.

The utility model provides a water purification system, includes foretell compound filter element group spare, the intercommunication has the preliminary treatment water pipe way between the preliminary treatment delivery port of bottle and the aftertreatment water inlet, be equipped with force (forcing) pump and inlet switch valve on the preliminary treatment water pipe way, inlet switch valve is located the force (forcing) pump is close to one side of preliminary treatment delivery port.

The above-mentioned scheme provides a water purification system, and the preliminary treatment water that passes through two-stage filtration in the preliminary treatment cavity passes through preliminary treatment water pipeline gets into the aftertreatment cavity under the effect of force (forcing) pump, the preliminary treatment water that gets into in the aftertreatment cavity forms the pure water after the filtration through meticulous filter core and rearmounted function filter core, realizes at least level four filtration. At least four stages of filter elements are respectively arranged in the pretreatment cavity and the post-treatment cavity of the bottle body, so that the integration of at least four stages of filtering functions is realized, and the volume of the whole machine is reduced.

In one embodiment, the water purification system further comprises a water tap and a pure water pipeline, one end of the pure water pipeline is communicated with the pure water outlet of the bottle body, the other end of the pure water pipeline is communicated with the water tap, a water outlet switch valve is arranged on the pure water pipeline, a concentrated water outlet of the bottle body is provided with a concentrated water pipeline, and a wastewater switch valve is arranged on the concentrated water pipeline.

Drawings

FIG. 1 is a cross-sectional view of the composite filter element assembly of the present embodiment;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is an enlarged view of a portion of FIG. 1 at C;

fig. 5 is a system diagram of the water purification system in the present embodiment.

Description of reference numerals:

10. a water purification system, 11, a pre-treatment water pipeline, 111, a pressure pump, 112, a water inlet switch valve, 12, a faucet, 13, a pure water pipeline, 131, a water outlet switch valve, 14, a concentrated water pipeline, 141, a wastewater switch valve, 20, a composite filter element assembly, 21, a bottle body, 211, a bottle body, 212, a bottle end cover, 213, a first dividing member, 2131, a pre-treatment cavity, 2132, a post-treatment cavity, 2133, a third sealing member, 214, a raw water inlet, 2141, a one-way check valve, 215, a pre-treatment water outlet, 2151, a water stop valve, 216, a post-treatment water inlet, 217, a pure water outlet, 218, a concentrated water outlet, 22A, a first pre-treatment filter element, 22B, a second pre-treatment filter element, 23A, a fine filtration filter element, 23B, a first post-treatment filter element, 23C, a second post-treatment filter element, 24, a pre-treatment central tube, 241, a fourth sealing member, 25, a pre-treatment, 251. supporting convex blocks, 26, a post-processing central pipe, 261, a third dividing piece, 2611, a second water guide hole, 2612, a second sealing piece, 27, a post-processing lower cover, 271, a first sealing piece, 272, an abutting block, 28, an auxiliary sleeve, 281, a water guide groove, 282, a pre-processing water pressurizing cavity, 283, a concentrated water cavity, 29 and a brine sealing ring.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

As shown in fig. 1, in one embodiment, a composite filter cartridge assembly 20 is provided, comprising a bottle body 21, wherein a first dividing member 213 is provided in the bottle body 21 to divide the inner cavity of the bottle body 21 into a pretreatment cavity 2131 and a post-treatment cavity 2132 in the axial direction. The raw water is pretreated in the pretreatment cavity 2131, and then is post-treated in the post-treatment cavity 2132, so that pure water is finally obtained.

Specifically, as shown in fig. 1, at least two stages of filter elements are disposed in the pretreatment cavity 2131, and a fine filtration filter element 23A and a post-functional filter element are disposed in the post-treatment cavity 2132. Raw water entering the pretreatment cavity 2131 is filtered by at least two stages of filter elements to obtain pretreated water. The pretreated water enters the post-treatment cavity 2132, and is filtered by the fine filtering element 23A and the post-functional filter element to obtain pure water for users to use.

In the scheme, the inner cavity of the bottle body 21 is axially divided into the pretreatment cavity 2131 and the post-treatment cavity 2132, then at least two stages of filter elements are arranged in the pretreatment cavity 2131 to pretreat raw water, and the fine filter element 23A and the post-functional filter element are arranged in the post-treatment cavity 2132. Thereby will at least four grades of filter cores integration in the bottle 21, realize at least four grades of filtration, improve product water quality, reduce complete machine volume.

Specifically, in one embodiment, as shown in fig. 1, the post-function filter element includes a first post-treatment filter element 23B and a second post-treatment filter element 23C, the fine filter element 23A is inserted into the post-treatment cavity 2132, the first post-treatment filter element 23B and the second post-treatment filter element 23C are both inserted into the fine filter element 23A, and the first post-treatment filter element 23B and the second post-treatment filter element 23C are sequentially distributed in the axial direction of the bottle body 21.

Thus, the pretreated water entering the post-treatment cavity 2132 is firstly filtered by the fine filter element 23A, passes through the fine filter element 23A, and is then filtered by the first post-treatment filter element 23B and the second post-treatment filter element 23C. While the three-stage filtration in the aftertreatment cavity 2132 is realized, the space occupied by the whole filter element is also reduced. And specifically, the water filtered by the fine filtering element 23A may pass through the first post-treatment filter element 23B and then the second post-treatment filter element 23C, or may pass through the second post-treatment filter element 23C and then the first post-treatment filter element 23B, as long as the pretreated water in the post-treatment cavity 2132 can pass through three-stage filtering, so as to obtain pure water, thereby improving the quality of the produced water.

Further specifically, in an embodiment, an aftertreatment center tube 26 is disposed in the aftertreatment cavity 2132, the fine filter element 23A is sleeved outside the aftertreatment center tube 26, the first aftertreatment filter element 23B and the second aftertreatment filter element 23C are located in the aftertreatment center tube 26, the first aftertreatment filter element 23B and the second aftertreatment filter element 23C are sequentially distributed in the axial direction of the aftertreatment center tube 26, the second aftertreatment filter element 23C is located on one side of the first aftertreatment filter element 23B far away from the first partition 213, and pretreated water entering the aftertreatment cavity 2132 can sequentially pass through the fine filter element 23A, the first aftertreatment filter element 23B and the second aftertreatment filter element 23C to be filtered to form pure water.

By further providing the post-treatment central tube 26, the water filtered by the fine filter element 23A sequentially passes through the first post-treatment filter element 23B and the second post-treatment filter element 23C for filtration under the isolating and guiding effects of the post-treatment central tube 26.

Further, in an embodiment, a dividing member is disposed in the central aftertreatment pipe 26, the first aftertreatment filter element 23B and the second aftertreatment filter element 23C are divided, and the dividing member is provided with a water guiding hole, so that under the control of the central aftertreatment pipe 26, water filtered by the fine filtering filter element 23A can flow into the second aftertreatment filter element 23C from the water guiding hole for further filtering only after being filtered by the first aftertreatment filter element 23B.

More specifically, in one embodiment, a water guiding hole may be disposed at a position on the post-treatment center pipe 26 corresponding to the first post-treatment filter element 23B, a bottom end of the post-treatment center pipe 26 abuts against the first dividing member 213, a dividing member disposed between the first post-treatment filter element 23B and the second post-treatment filter element 23C is a second dividing member, the water guiding hole on the second dividing member is a first water guiding hole, and water filtered by the fine filtration filter element 23A in the post-treatment cavity 2132 flows into the second post-treatment filter element 23C from the first water guiding hole on the second dividing member to perform a further filtration process after being filtered by the first post-treatment filter element 23B only through the water guiding hole.

Optionally, in an embodiment, as shown in fig. 1, a groove may be provided on an outer wall of the central aftertreatment pipe 26 for forming a water flow path with the fine filter element 23A, a water delivery path is provided on a pipe wall of the central aftertreatment pipe 26, one end of the water delivery path is communicated with the water flow path, and the other end of the water delivery path penetrates through a bottom end face of the central aftertreatment pipe 26. The bottom end cover of the post-treatment central tube 26 is provided with a post-treatment lower cover 27, the bottom end face of the post-treatment central tube 26 and the post-treatment lower cover 27 are arranged at intervals, and the inner wall of the post-treatment central tube 26 and the first post-treatment filter element 23B are arranged at intervals. The end of the first aftertreatment filter element 23B abuts against the aftertreatment lower cover 27. The dividing member in the central aftertreatment pipe 26 is a third dividing member 261, which divides the central aftertreatment pipe 26 into an upper cavity and a lower cavity, the first aftertreatment filter element 23B is located in the lower cavity, the second aftertreatment filter element 23C is located in the upper cavity, and the water guide hole in the third dividing member 261 is a second water guide hole 2611.

The water flowing into the central aftertreatment pipe 26 from the water flowing path of the central aftertreatment pipe 26 first enters the gap between the first central aftertreatment filter element 23B and the central aftertreatment pipe 26, then is filtered by the first central aftertreatment filter element 23B, and then enters the second central aftertreatment filter element 23C from the second water guiding hole 2611 for filtering, because the water conveying path penetrates through the bottom end face of the central aftertreatment pipe 26.

Further, in an embodiment, as shown in fig. 1, a second sealing member 2612 is disposed between the third dividing member 261 and the inner wall of the central aftertreatment tube 26, so as to ensure the isolation and sealing performance between the space where the first aftertreatment filter element 23B is located and the space where the second aftertreatment filter element 23C is located, so that water filtered by the first aftertreatment filter element 23B enters the upper cavity only through the second water guide hole of the third dividing member 261 and is filtered by the second aftertreatment filter element 23C.

Further, in one embodiment, as shown in fig. 2, a first sealing member 271 is disposed between the outer wall of the central aftertreatment pipe 26 and the lower aftertreatment cover 27, and an abutting block 272 is disposed between the bottom end face of the central aftertreatment pipe 26 and the lower aftertreatment cover 27. So that the water entering the water delivery passage can flow into the central post-treatment pipe 26 from the gap between the bottom end surface of the central post-treatment pipe 26 and the lower post-treatment cover 27, and a two-stage filtering process is performed.

Preferably, the abutment block 272 is located outside the water outlet of the water delivery passage on the bottom end surface of the central aftertreatment tube 26, so as to further avoid the abutment block 272 from blocking the water flow process.

Further, in one embodiment, as shown in fig. 1 and 4, an auxiliary sleeve 28 is inserted into the aftertreatment cavity 2132. Meticulous filter core 23A's outer wall with interval sets up between the bottle 21, auxiliary sleeve 28 cover is established meticulous filter core 23A is outer. The bottom wall of the auxiliary sleeve 28 is provided with an auxiliary through hole, and one end of the post-processing central tube 26, which is provided with a water outlet, passes through the auxiliary through hole and then is communicated with the pure water outlet 217 of the bottle body 21. The auxiliary sleeve 28 with the top of aftertreatment center tube 26 with interval sets up between the meticulous filter core 23A, the auxiliary sleeve 28 with be equipped with salt solution sealing washer 29 between the outer wall of meticulous filter core 23A, will meticulous filter core 23A with clearance between the bottle 21 is cut apart into pretreatment water pressurization cavity 282 and dense water cavity 283. The concentrated water cavity 283 is communicated with the concentrated water outlet 218 of the bottle body 21. A gap is formed between the auxiliary sleeve 28 and the bottle body 21 to communicate the post-treatment water inlet 216 and the pre-treatment water pressurizing chamber 282.

Thus, in use, pressurized pretreated water is introduced into the pretreated water pressurizing chamber 282, pure water enters the first post-treatment cartridge 23B through the post-treatment central tube 26 under the filtration of the fine filtration cartridge 23A, and concentrated water reaches the concentrated water chamber 283 along the fine filtration cartridge 23A and flows out of the concentrated water outlet 218. The brine seal ring 29 is arranged to ensure the separation between the pretreated water pressurizing cavity 282 and the concentrated water cavity 283, so that the water channeling is avoided.

Specifically, in one embodiment, as shown in fig. 4, the wall of the auxiliary sleeve 28 is provided with a water chute 281 axially disposed, and the water chute 281 is communicated between the post-treatment water inlet 216 and the pretreated water pressurizing cavity 282. As shown in fig. 1 and 4, water introduced from the post-treatment water inlet 216 passes through the water guide passage 281 and then reaches a gap between the fine filter element 23A and the bottle body 21.

Further specifically, in one embodiment, the fine filtration filter element 23A is a roll-type reverse osmosis filter element or a roll-type nanofiltration filter element, the first post-treatment filter element 23B is a sintered carbon rod, and the second post-treatment filter element 23C is a microfiltration membrane filter element or an ultrafiltration membrane filter element.

Further, in one embodiment, as shown in fig. 1 and 2, the first dividing member 213 is a pretreatment upper cover covering the filter element in the pretreatment chamber 2131, and a third sealing member 2133 is disposed between the pretreatment upper cover and the bottle body 21.

That is, the first divider 213 divides the vial 21, and the pretreatment chamber 2131 and the post-treatment chamber 2132 are not communicated with each other at the first divider 213.

Further, in an embodiment, as shown in fig. 1, a first pretreatment filter element 22A and a second pretreatment filter element 22B are disposed in the pretreatment cavity 2131, the first pretreatment filter element 22A is sleeved outside the second pretreatment filter element 22B, raw water entering from the raw water inlet 214 of the bottle 21 is sequentially filtered by the first pretreatment filter element 22A and the second pretreatment filter element 22B to form pretreated water, and the pretreated water flows out from the pretreatment water outlet 215.

Optionally, the first pretreatment cartridge 22A and the second pretreatment cartridge 22B may also be stacked in the pretreatment chamber 2131, for example, the first pretreatment cartridge 22A and the second pretreatment cartridge 22B are intercepted between the raw water inlet 214 and the pretreatment water outlet 215 of the bottle body 21. The raw water entering from the raw water inlet 214 is filtered by the first pretreatment filter element 22A and the second pretreatment filter element 22B in sequence to form pretreated water, and the pretreated water flows out from the pretreatment water outlet 215.

However, the first pretreatment filter element 22A and the second pretreatment filter element 22B are sleeved to improve the filtration efficiency and quality and reduce the overall occupation of space.

More specifically, the first pretreatment filter element 22A may be a spray-melt PP cotton filter element or a origami PP cotton filter element, and is configured to take out contaminants such as larger suspended matters, silt, and rust from the water body; the second pretreatment filter element 22B may be a sintered carbon rod for adsorbing and removing residual chlorine, small molecular organic substances, and the like in the water body.

Further, as shown in fig. 1 and 2, when the first pretreatment cartridge 22A and the second pretreatment cartridge 22B are disposed in the pretreatment chamber 2131, the pretreatment upper cover covers upper ends of the first pretreatment cartridge 22A and the second pretreatment cartridge 22B. The upper pretreatment cover and the first and second pretreatment cartridges 22A and 22B may be joined by bonding.

Further, in one embodiment, as shown in fig. 1 and 3, the bottle body 21 includes a bottle body 211 and a bottle cap 212, and the bottle cap 212 is disposed at one end of the bottle body 211 to form the pretreatment cavity 2131. Alternatively, the bottle body 21 may be a housing structure formed integrally.

When the bottle body 21 includes the bottle body 211 and the bottle cap 212, the raw water inlet 214 and the pre-treatment water outlet 215 are both disposed on the bottle cap 212. In the assembling process, at least two stages of filter elements in the pretreatment cavity 2131 are installed in place and then the bottle end cover 212 is covered, so that the assembly is simple.

Further, as shown in fig. 1 and 3, a pretreatment lower cover 25 is disposed between the end surface of the first pretreatment filter element 22A and the bottle end cover 212, the pretreatment lower cover 25 is disposed at the end portions of the first pretreatment filter element 22A and the second pretreatment filter element 22B, the pretreatment lower cover 25 and the bottle end cover 212 are disposed at intervals, and the outer side wall of the first pretreatment filter element 22A and the bottle body 211 are disposed at intervals to form a cavity for storing raw water. As shown in fig. 1, the raw water introduced from the raw water inlet 214 flows into the gap between the first pretreatment cartridge 22A and the bottle body 211 from the gap between the pretreatment lower cover 25 and the bottle end cover 212, and is then filtered by the first pretreatment cartridge 22A and the second pretreatment cartridge 22B and discharged from the pretreatment water outlet 215.

Further, as shown in fig. 1 and 3, a mounting through hole is formed in the pretreatment lower cover 25, a side wall forming the mounting through hole extends to communicate with the pretreatment water outlet 215, a pretreatment center pipe 24 is inserted into the mounting through hole, and the pretreatment center pipe 24 extends to the second pretreatment filter element 22B. The pretreated water obtained by filtration through the first pretreatment cartridge 22A and the second pretreatment cartridge 22B flows from the pretreatment center pipe 24 into the installation through-hole and then flows out from the pretreatment water outlet 215.

Or the lower end of the pretreatment central tube 24 passes through the installation through hole and extends to be communicated with the pretreatment water outlet 215, the upper end of the pretreatment central tube 24 extends into the second pretreatment filter element, and pretreated water obtained by filtering through the first pretreatment filter element 22A and the second pretreatment filter element 22B flows out of the pretreatment central tube 24. It should be noted that the upper and lower ends of the pre-treated center tube 24 are described herein for ease of understanding only, and the pre-treated center tube 24 ends in the state shown in FIG. 1 are not intended to be limited in orientation, and the pre-treated center tube 24 ends will change when the installation angle of the entire composite filter element assembly 20 changes.

Or the lower end of the pretreatment central pipe 24 is only positioned in the installation through hole, and an auxiliary pipe is further arranged between the installation through hole and the pretreatment water outlet 215 and is used for communicating the installation through hole and the pretreatment water outlet. Pretreated water obtained by filtering through the first pretreatment filter element 22A and the second pretreatment filter element 22B is collected into the pretreatment center tube 24, and then flows out after sequentially passing through the installation through hole, the auxiliary tube and the pretreatment water outlet.

Preferably, the pretreated base pipe 24 described herein may be a complete pipe with no pilot openings in the pipe wall. Further, the central pretreatment pipe 24 is spaced apart from the second pretreatment filter element 22B, and the central pretreatment pipe 24 extends to a position close to the first partition 213. Therefore, the first pretreatment filter element 22A and the second pretreatment filter element 22B are more involved in the filtration in the axial height, that is, the first pretreatment filter element 22A and the second pretreatment filter element 22B are fully utilized to participate in the filtration process. The pretreated water produced by the filtration can flow out of the pretreated central tube 24 only when the level of the pretreated water produced by the filtration reaches the end of the pretreated central tube 24 close to the first partition 213.

In one embodiment, as shown in fig. 1, when the first pretreatment filter element 22A is sleeved outside the second pretreatment filter element 22B, the pretreatment upper cover and the pretreatment lower cover 25 are respectively covered at two ends of the first pretreatment filter element 22A and the second pretreatment filter element 22B. The raw water entering the pretreatment cavity 2131 is filtered by the first pretreatment filter element 22A and the second pretreatment filter element 22B in sequence, and then flows out of the pretreatment water outlet 215 after being collected by the pretreatment central tube 24.

Further, in one embodiment, as shown in fig. 1 and 3, a support projection 251 is provided between the pretreatment lower cap 25 and the bottle end cap 212. The supporting protrusions 251 do not form a continuous ring shape, that is, the supporting protrusions 251 support the pretreatment lower cover 25 on the bottle cap 212, but the raw water inlet 214, the gap between the pretreatment lower cover 25 and the bottle cap 212, and the gap between the first pretreatment cartridge 22A and the bottle body 211 are communicated with each other, and the raw water flowing from the raw water inlet 214 can reach the gap between the first pretreatment cartridge 22A and the bottle body 211.

Further, in one embodiment, as shown in fig. 3, the sidewall forming the installation through hole is inserted into the pre-treatment water outlet 215, and a fourth sealing member 241 is disposed between the sidewall forming the installation through hole and the bottle cap 212 to improve the sealing performance of the pre-treatment cavity 2131.

Alternatively, in one embodiment, the lower end of the central preconditioner tube 24 is inserted into the preconditioner outlet 215 such that the fourth seal 241 is disposed between the central preconditioner tube 24 and the bottle end cap 212. Or when provided, is inserted in the pre-treated water outlet 215, with the fourth seal 241 being provided between the auxiliary tube and the bottle end cap 212.

Further, in one embodiment, as shown in fig. 1, 3 and 4, a raw water inlet 214 and a pre-treatment water outlet 215 of the bottle body 21 are provided at one end, and a post-treatment water inlet 216, a pure water outlet 217 and a concentrated water outlet 218 of the bottle body are provided at the other end. Thereby being convenient for being applicable to water purifiers such as kitchen following formula and mesa formula, further reducing whole quick-witted size.

Further, as shown in fig. 1 and 3, a one-way check valve 2141 is disposed at the raw water inlet 214, and a water outlet of the one-way check valve 2141 faces the pretreatment cavity 2131; the pretreatment water outlet 215 is provided with a water stop valve 2151. Thereby preventing water in the bottle body 21 from flowing out when the filter element is replaced.

Furthermore, in one embodiment, the first pre-treatment filter element 22A is a folded paper PP cotton filter element, the second pre-treatment filter element 22B is a sintered carbon rod, the fine filtration filter element 23A is a rolled reverse osmosis filter element or a rolled nanofiltration filter element, the first post-treatment filter element 23B is a sintered carbon rod, and the second post-treatment filter element 23C is a microfiltration membrane filter element or an ultrafiltration membrane filter element. So set up, can make the life of filter core at different levels roughly unanimous at the in-process that uses to improve with the efficiency of trading the filter core.

Further, in another embodiment, a water purification system 10 is provided, as shown in fig. 5, which includes the composite filter element assembly 20, a pretreated water pipe 11 is connected between the pretreated water outlet 215 and the post-treated water inlet 216 of the bottle 21, a pressure pump 111 and a water inlet switch valve 112 are disposed on the pretreated water pipe 11, and the water inlet switch valve 112 is disposed on a side of the pressure pump 111 close to the pretreated water outlet 215.

The scheme provides a water purification system 10, pretreated water which is subjected to at least two-stage filtration in a pretreatment cavity 2131 enters a post-treatment cavity 2132 through a pretreatment water pipeline 11, and under the action of a pressure pump 111, the pretreated water entering the post-treatment cavity 2132 forms pure water under the filtration of a fine filtration filter element 23A and a post-functional filter element, so that at least four-stage filtration is realized. The filter elements of at least four stages of filtration are respectively arranged in the pretreatment cavity 2131 and the post-treatment cavity 2132 of the bottle body 21, so that the integration of at least four stages of filtration functions is realized, and the volume of the whole machine is reduced.

Moreover, when the water gaps are distributed at two ends of the bottle body 21, the layout of the whole system is simpler, and the volume of the water purification system 10 is further reduced.

Further, in one embodiment, the water purification system 10 further includes a tap 12 and a pure water pipeline 13, one end of the pure water pipeline 13 is communicated with the pure water outlet 217 of the bottle 21, the other end of the pure water pipeline 13 is communicated with the tap 12, the pure water pipeline 13 is provided with a water outlet switch valve 131, the concentrated water outlet 218 of the bottle 21 is provided with a concentrated water pipeline 14, and the concentrated water pipeline 14 is provided with a waste water switch valve 141.

In the normal drinking process, the water outlet switch valve 131 is opened, and pure water reaches the faucet 12 through the pure water pipeline 13; the concentrate flows out of the concentrate line 14. During flushing, the outlet valve 131 is closed, and the flushing waste water is discharged from the concentrate line 14.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (20)

1. The utility model provides a compound filter element group spare, a serial communication port, the bottle comprises a bottle body, be equipped with first segmentation piece in the bottle, be used for with the inner chamber of bottle is split into preliminary treatment cavity and aftertreatment cavity in the axial, be equipped with at least two-stage filter core in the preliminary treatment cavity, be equipped with meticulous filtration filter core and rearmounted function filter core in the aftertreatment cavity, process the preliminary treatment water that the filter core filtered the acquisition in the preliminary treatment cavity can get into process in proper order among the aftertreatment cavity meticulous filtration filter core and rearmounted function filter core filter.

2. The composite filter element assembly of claim 1, wherein the post-functional filter element comprises a first post-treatment filter element and a second post-treatment filter element, the fine filter element is inserted into the post-treatment cavity, the first post-treatment filter element and the second post-treatment filter element are inserted into the fine filter element, and the first post-treatment filter element and the second post-treatment filter element are sequentially distributed in the axial direction of the bottle body.

3. The composite filter element assembly of claim 2, wherein an aftertreatment center tube is disposed in the aftertreatment cavity, the fine filter element is sleeved outside the aftertreatment center tube, the first aftertreatment filter element and the second aftertreatment filter element are disposed in the aftertreatment center tube, the first aftertreatment filter element and the second aftertreatment filter element are sequentially distributed in the axial direction of the aftertreatment center tube, the second aftertreatment filter element is disposed on one side, away from the first partition, of the first aftertreatment filter element, and pretreated water entering the aftertreatment cavity can sequentially pass through the fine filter element, the first aftertreatment filter element and the second aftertreatment filter element to form pure water after being filtered.

4. The composite filter element assembly according to claim 3, wherein the post-treatment central pipe is provided with a second dividing member for dividing the first post-treatment filter element from the second post-treatment filter element, the second dividing member is provided with a first water guide hole for communicating a water production cavity of the first post-treatment filter element with a water inlet of the second post-treatment filter element, a water outlet of the post-treatment central pipe is communicated with a water outlet of the second post-treatment filter element, a water guide hole is formed in a part of the post-treatment central pipe corresponding to the first post-treatment filter element, and the bottom end of the post-treatment central pipe is abutted to the first dividing member.

5. The composite filter element assembly according to claim 3, wherein a third dividing member for dividing the first post-treatment filter element from the second post-treatment filter element is disposed in the post-treatment center tube, the third dividing member is provided with a second water guide hole for communicating a water production cavity of the first post-treatment filter element with a water inlet of the second post-treatment filter element, a water outlet of the post-treatment center tube is communicated with a water outlet of the second post-treatment filter element, a groove is disposed on an outer wall of the post-treatment center tube for forming a water flow path with the fine filter element, a water delivery path is disposed on a tube wall of the post-treatment center tube, one end of the water delivery path is communicated with the water flow path, the other end of the water delivery path penetrates through a bottom end face of the post-treatment center tube, and a bottom cover of the post-treatment center tube is provided with a post-treatment lower cover, the bottom end face of the post-treatment central pipe and the post-treatment lower cover are arranged at intervals, and the inner wall of the post-treatment central pipe and the first post-treatment filter element are arranged at intervals.

6. The composite filter element assembly of claim 5, wherein a first sealing element is arranged between the outer wall of the central aftertreatment pipe and the lower aftertreatment cover, and an abutment block is arranged between the bottom end face of the central aftertreatment pipe and the lower aftertreatment cover.

7. The composite filter element assembly of claim 5, wherein a second seal is disposed between the third divider and the inner wall of the aftertreatment center tube.

8. The composite filter element assembly of claim 3, wherein an auxiliary sleeve is inserted into the post-treatment cavity, the outer wall of the fine filter element and the bottle body are arranged at intervals, the auxiliary sleeve is sleeved outside the fine filter element, an auxiliary through hole is arranged on the bottom wall of the auxiliary sleeve, one end of the post-treatment central tube, which is provided with a water outlet, passes through the auxiliary through hole and then is communicated with a pure water outlet of the bottle body, the auxiliary sleeve and the top end of the post-treatment central tube and the fine filter element are arranged at intervals, a brine seal ring is arranged between the auxiliary sleeve and the outer wall of the fine filter element, the gap between the fine filter element and the bottle body is divided into a pretreatment water pressurizing cavity and a concentrated water cavity, and the concentrated water cavity is communicated with a concentrated water outlet of the bottle body, a gap for communicating the post-treatment water inlet of the bottle body and the pre-treatment water pressurization cavity is arranged between the auxiliary sleeve and the bottle body.

9. The composite filter element assembly of claim 8, wherein the auxiliary sleeve has a cylindrical wall provided with an axially disposed water chute, said water chute communicating between the post-treatment water inlet and the pre-treatment water pressurization chamber.

10. The composite filter element assembly of claim 2, wherein the fine filtration filter element is a roll-type reverse osmosis filter element or a roll-type nanofiltration filter element, the first post-treatment filter element is a sintered carbon rod, and the second post-treatment filter element is a microfiltration membrane filter element or an ultrafiltration membrane filter element.

11. The composite filter element assembly according to any one of claims 1 to 9, wherein the first dividing member is a pre-treatment upper cover covering the filter element located in the pre-treatment chamber, and a third sealing member is provided between the pre-treatment upper cover and the bottle body.

12. The composite filter element assembly according to any one of claims 1 to 9, wherein a first pretreatment filter element and a second pretreatment filter element are arranged in the pretreatment cavity, the first pretreatment filter element is sleeved outside the second pretreatment filter element, and raw water entering from a raw water inlet of the bottle body is sequentially filtered by the first pretreatment filter element and the second pretreatment filter element to form pretreated water.

13. The composite filter element assembly of claim 12, wherein the first pre-treated filter element is a jet-melt PP cotton filter element or a origami PP cotton filter element, and the second pre-treated filter element is a sintered carbon rod.

14. The composite filter element assembly of claim 12, wherein the bottle body comprises a bottle body and a bottle end cap, the bottle end cap is disposed at one end of the bottle body to form the pre-treatment chamber, the raw water inlet and the pre-treatment water outlet of the bottle body are both disposed on the bottle end cap, a pre-treatment lower cap is disposed between the end surface of the first pre-treatment filter element and the bottle end cap, the pre-treatment lower cap is disposed at the end of the first pre-treatment filter element and the second pre-treatment filter element, the pre-treatment lower cap is spaced from the bottle end cap, the outer sidewall of the first pre-treatment filter element is spaced from the bottle body, an installation through hole is disposed on the pre-treatment lower cap, the sidewall forming the installation through hole extends to communicate with the pre-treatment water outlet, a pre-treatment central tube is inserted into the installation through hole, the pre-treatment central tube extends to the second pre-treatment filter element, or cover under the preliminary treatment and be equipped with the installation through-hole, the plug-in preliminary treatment center tube that is equipped with in the installation through-hole, the lower extreme of preliminary treatment center tube passes the installation through-hole extend to with preliminary treatment delivery port intercommunication, the upper end of preliminary treatment center tube extends to in the second preliminary treatment filter core, or cover under the preliminary treatment and be equipped with the installation through-hole, the plug-in preliminary treatment center tube that is equipped with in the installation through-hole, the preliminary treatment center tube extends to in the second preliminary treatment filter core, the installation through-hole with the intercommunication has the auxiliary tube between the preliminary treatment delivery port.

15. The composite filter element assembly of claim 14, wherein the pre-treated center tube is spaced apart from the second pre-treated filter element, the pre-treated center tube extending to a position proximate the first partition.

16. The composite filter element assembly of claim 14, wherein a support tab is provided between the preconditioned lower cap and the bottle end cap.

17. The composite filter element assembly of claim 14, wherein the side wall forming the mounting through hole is inserted into the pre-treatment water outlet, and a fourth sealing member is provided between the side wall forming the mounting through hole and the bottle end cap, or the lower end of the pre-treatment center tube is inserted into the pre-treatment water outlet, and a fourth sealing member is provided between the pre-treatment center tube and the bottle end cap, or the auxiliary tube is inserted into the pre-treatment water outlet, and a fourth sealing member is provided between the auxiliary tube and the bottle end cap.

18. The composite filter element assembly according to any one of claims 1 to 9, wherein a raw water inlet and a pre-treatment water outlet on the bottle are provided at one end, a post-treatment water inlet, a pure water outlet and a concentrated water outlet on the bottle are provided at the other end, the raw water inlet is provided with a one-way check valve, the outlet of the one-way check valve faces into the pre-treatment cavity, and the pre-treatment water outlet is provided with a water stop valve.

19. A water purification system, comprising the composite filter element assembly of any one of claims 1 to 18, wherein a pretreatment water pipeline is communicated between the pretreatment water outlet and the post-treatment water inlet of the bottle body, the pretreatment water pipeline is provided with a pressure pump and a water inlet switch valve, and the water inlet switch valve is positioned on one side of the pressure pump close to the pretreatment water outlet.

20. The water purification system of claim 19, further comprising a water tap and a pure water pipeline, wherein one end of the pure water pipeline is communicated with the pure water outlet of the bottle body, the other end of the pure water pipeline is communicated with the water tap, a water outlet switch valve is arranged on the pure water pipeline, a concentrated water outlet of the bottle body is provided with a concentrated water pipeline, and a waste water switch valve is arranged on the concentrated water pipeline.

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