CN213623517U - Water purifying equipment - Google Patents

Abstract

The application provides a water purification unit, include by outer filter flask, leading filter element group spare, reverse osmosis filter element group spare and the center tube that sets gradually to interior, water purification unit is still including setting up the rearmounted filter element group spare at center tube top, rearmounted filter element group spare is including rearmounted filter core upper cover, the rearmounted filter core of annular and the rearmounted filter core lower cover that sets gradually, rearmounted filter core upper cover with one side that rearmounted filter core lower cover is relative each other is equipped with first ring channel and second ring channel respectively, the upper and lower both ends of the rearmounted filter core of annular are embedded into respectively first ring channel with in the second ring channel. The fixing mode of this application water purification unit's rearmounted filter core is more reliable.

Description

Water purifying equipment

Technical Field

This application belongs to the water purification field, specifically provides a water purification unit.

Background

The water purifier is a water treatment device which carries out deep filtration and purification treatment according to the use requirement of water. In recent years, with the improvement of life quality of people, people pay more and more attention to their health, and a water purifier capable of improving water quality receives attention of consumers, so that the market of the water purifier is rapidly developed.

The water purifier filters water through a filter element installed in the water purifier. Traditional water purifier is through concatenating the filter core head and the tail of a plurality of different precision for rivers flow through different filter cores in proper order, thereby accomplish that the filter effect improves in proper order and filter step by step. Because need change the filter core after using a period of time, the water purifier of a plurality of filter cores has the trouble of changing the core, trades the higher problem of core cost, so adopts composite filter element's water purifier to come into production at the end. The composite filter element is to combine the filter elements with various precisions together, so that one composite filter element is used for completing the filtering work of a plurality of filter elements, only one composite filter element needs to be replaced during replacement, and a plurality of filter elements do not need to be replaced.

The composite filter element is provided with filter elements made of various materials, so that the connection among various filter element components is firm, the sealing property is good, and the multi-stage filtration effect can be realized. Most of composite filter core adopt several grades of filter cores in the front to encircle the setting and the rearmounted filter core of last one-level sets up the equipment mode at several grades of filter core tip in the front, wherein encircle the equipment mode of setting and fix easily and sealed, but the rearmounted filter core often appears fixity and leakproofness not good and influence the problem of filter effect.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem among the prior art, for fixity and the leakproofness that has improved rearmounted filter core, this application provides a water purification unit, include by outer filter flask, leading filter core subassembly, reverse osmosis filter core subassembly and the center tube that sets gradually in to, water purification unit is still including setting up the rearmounted filter core subassembly at center tube top, rearmounted filter core subassembly is including rearmounted filter core upper cover, the rearmounted filter core of annular and the rearmounted filter core lower cover that sets gradually, rearmounted filter core upper cover with one side relative each other of rearmounted filter core lower cover is equipped with first ring channel and second ring channel respectively, the upper and lower both ends of the rearmounted filter core of annular are embedded into respectively in first ring channel with in the second ring channel.

Optionally, a boss is arranged in the middle of the rear filter element lower cover, an annular bulge is arranged on the circumferential edge of the rear filter element lower cover, and the second annular groove is formed between the boss and the annular bulge; and/or the annular rear filter element, the rear filter element upper cover and the rear filter element lower cover are fixed together in a sealing mode respectively.

Optionally, a pure water cavity is formed among the inner side wall of the annular rear filter element, the top surface of the boss and the lower surface of the upper cover of the rear filter element; the rear filter element upper cover is provided with a pure water channel, and the pure water channel is communicated with the pure water cavity.

Optionally, the reverse osmosis filter element assembly comprises a reverse osmosis filter element upper cover, a reverse osmosis filter element and a reverse osmosis filter element lower cover which are arranged in sequence; the reverse osmosis filter element is sleeved on the outer side of the central tube, a water permeable hole is formed in the side wall of the central tube, and one end, far away from the upper cover of the reverse osmosis filter element, of the central tube is closed; an annular cover is arranged on one side, close to the reverse osmosis filter element, of the upper cover of the reverse osmosis filter element, and the annular cover is sleeved on the outer side of the reverse osmosis filter element and is in sealing fit with the side wall of the reverse osmosis filter element; an outer annular convex rib and an inner annular convex rib are arranged on one side, away from the reverse osmosis filter element, of the reverse osmosis filter element upper cover, the top end of the outer annular convex rib is hermetically connected with the lower surface of the rear filter element upper cover, and the inner annular convex rib is inserted into the boss, so that a water passing gap is formed among the reverse osmosis filter element upper cover, the outer side wall of the annular rear filter element and the lower surface of the rear filter element lower cover; the reverse osmosis filter element upper cover is also provided with a central hole surrounded by the inner side annular convex rib, the central pipe penetrates through the central hole, and the central pipe is in sealing fit with the inner side annular convex rib.

Optionally, the reverse osmosis filter element assembly further comprises a waste water jacket; the waste water distributing sleeve is sleeved on the outer side of the upper cover of the reverse osmosis filter element, and the bottom of the waste water distributing sleeve is hermetically connected with the upper cover of the reverse osmosis filter element, so that a waste water channel is defined by the waste water distributing sleeve, the outer side surface of the outer annular convex rib and the upper surface of the upper cover of the rear filter element; a wastewater gap is formed between the lower surface of the upper cover of the reverse osmosis filter element and the upper end surface of the reverse osmosis filter element, a wastewater hole is formed in the upper cover of the reverse osmosis filter element, and the wastewater hole is communicated with the wastewater gap and the wastewater channel.

Optionally, the reverse osmosis filter element assembly further comprises a shell and a pure water diversion sleeve which is positioned at the top of the shell and is in sealed connection with the shell; the outer shell is sleeved on the outer side of the reverse osmosis filter element and is in sealing connection with the lower cover of the reverse osmosis filter element; the purified water dividing sleeve is sleeved outside the waste water dividing sleeve; and a purified water inlet channel is formed among the shell, the purified water jacket, the reverse osmosis filter element and the waste water jacket.

Optionally, the front filter element assembly comprises a front filter element, a front filter element framework arranged on the inner side of the front filter element and a raw water diversion sleeve arranged on the top of the front filter element; the front filter element framework is sleeved on the outer side of the shell, and water passing holes are formed in the side wall of the front filter element framework; the raw water diversion sleeve is sleeved on the outer side of the water purification jacket, and the raw water diversion sleeve is connected with the front filter element framework in a sealing manner; the front filter element and the front filter element framework are respectively connected with the reverse osmosis lower cover in a sealing mode, and a water purification outlet channel is formed between the front filter element assembly and the shell and between the water purification water jackets.

Optionally, a raw water inlet channel is formed between the filter bottle and the front filter element member, and water in the raw water inlet channel is filtered by the front filter element and then enters the purified water outlet channel through the water passing hole.

Optionally, the filter bottle comprises a bottle cap and a bottle body, and the bottle cap is provided with a raw water inlet, a purified water outlet, a purified water inlet, a waste water outlet and a purified water outlet; the raw water inlet is communicated with the raw water inlet channel, the purified water outlet is communicated with the purified water outlet channel, the purified water inlet is communicated with the purified water inlet channel, the wastewater outlet is communicated with the wastewater channel, and the purified water outlet is communicated with the purified water channel.

As can be understood by those skilled in the art, the water purifying apparatus described in the foregoing of the present application has at least the following advantages:

1. the first annular groove and the second annular groove are respectively arranged on the opposite sides of the upper cover of the rear filter element and the lower cover of the rear filter element, so that the upper cover of the rear filter element and the lower cover of the rear filter element can clamp the annular rear filter element in the middle along the axial direction through the first annular groove and the second annular groove, the annular rear filter element is prevented from moving along the radial direction, and the annular rear filter element is more firmly fixed. Meanwhile, the first annular groove and the second annular groove enable the rear filter element upper cover and the rear filter element lower cover to be in contact with the outer side face, the inner side face and the end face of the annular rear filter element, and sealing effects among the rear filter element upper cover, the rear filter element lower cover and the annular rear filter element are improved.

2. Set up the boss through the middle part at rearmounted filter core lower cover for the boss can be embedded into and fix a position rearmounted filter core subassembly in the rearmounted filter core subassembly, makes the equipment easier, and compares in setting up the mode that two chimbs formed the ring channel on the plane, sets up the easier machine-shaping of boss.

3. Through setting up respectively with the raw water inlet, the water purification delivery port, the water purification water inlet, the raw water inlet channel of waste water delivery port and pure water delivery port intercommunication, water purification outlet channel, water purification inlet channel, waste water channel and pure water passageway, make water purification unit utilize a composite filter core structure just can realize multistage filtration and export two kinds of water qualities of water, a water purification through leading filter element group spare filterable, another kind is through leading filter element group spare, reverse osmosis filter element group spare and the filterable pure water of rearmounted filter element group spare, compare with adopting a plurality of solitary filter core structures, water purification unit's volume has been reduced on realizing multistage filterable basis, water purification unit's structure has been simplified.

Simultaneously, through setting up the waste water passageway for the impurity between stratiform reverse osmosis filter core layer and the layer is taken away by rivers, and the rivers that carry impurity get into waste water passageway from the terminal surface of reverse osmosis filter core and discharge through the waste water delivery port, have played clean effect to the reverse osmosis filter core, are favorable to keeping the filter effect of reverse osmosis filter core.

The application also provides another water purification equipment, which comprises a filter flask, a front filter element assembly, a reverse osmosis filter element assembly, a central tube and a rear filter element assembly which are sequentially arranged from outside to inside, wherein the rear filter element assembly comprises an annular rear filter element, the reverse osmosis filter element assembly comprises a reverse osmosis filter element and a reverse osmosis filter element upper cover, and the reverse osmosis filter element upper cover is provided with an annular groove and a through hole; the top end of the central tube is inserted into the annular groove and is connected with the upper cover of the reverse osmosis filter element in a sealing way; the top of the annular postposition filter element is abutted to the upper cover of the reverse osmosis filter element in a sealing manner, and the bottom end of the annular postposition filter element is abutted to the partition plate formed in the central tube.

Drawings

Some embodiments of the present application are described below with reference to the accompanying drawings, in which:

FIG. 1 is a cross-sectional view of a first embodiment of the present application;

FIG. 2 is a cross-sectional view of a post-filter cartridge assembly according to a first embodiment of the present application;

figure 3 is a schematic view of the construction of a closure according to a first embodiment of the present application;

FIG. 4 is a cross-sectional view of the post-cartridge assembly and reverse osmosis cartridge cover assembly of the first embodiment of the present application;

FIG. 5 is a schematic structural view of a raw water jacket according to a first embodiment of the present application;

FIG. 6 is a schematic view of a front cartridge frame according to a first embodiment of the present disclosure;

FIG. 7 is a schematic view of the water jacket with water purification according to the first embodiment of the present application;

FIG. 8 is a schematic structural view of the housing in the first embodiment of the present application;

fig. 9 is a schematic structural view of a waste water dividing jacket according to the first embodiment of the present application;

FIG. 10 is a cross-sectional view of a second embodiment of the present application.

List of reference numerals:

100. a filter flask; 110. a bottle cap; 111. a first annular structure; 112. a second annular structure; 113. a third ring-shaped structure; 114. a fourth ring-shaped structure; 115. a fifth ring structure; 1110. a raw water inlet hole; 1120. a water purification outlet; 1130. a purified water inlet hole; 1140. a waste water outlet; 1150. a pure water outlet hole; 120. a bottle body;

200. a pre-filter element assembly; 210. a raw water jacket; 211. a first support rib; 212. a first seal ring mounting groove; 213. a second seal ring mounting groove; 220. a front filter element framework; 221. water passing holes; 222. a second support rib; 223. a first flanging; 230. a front filter element;

300. a reverse osmosis filter element assembly; 310. a waste water separating jacket; 311. a fifth support rib; 312. a sixth seal ring mounting groove; 313. third flanging; 320. a reverse osmosis filter element upper cover; 321. an outer annular convex rib; 322. an inner annular convex rib; 323. an annular shroud; 324. a first rib; 325. a second rib; 326. a central bore; 327. a third rib; 330. a reverse osmosis filter element; 340. a water purifying and separating jacket; 341. a third support rib; 342. a third seal ring mounting groove; 343. a fourth seal ring mounting groove; 350. a housing; 351. a fourth support rib; 352. second flanging; 353. a fifth seal ring mounting groove;

400. a post-filter element assembly; 410. a rear filter element upper cover; 411. a first annular groove; 412. a seventh seal ring mounting groove; 420. an annular post-filter element; 430. a lower cover of the post-positioned filter element; 431. a second annular groove; 432. a boss; 433. an annular projection;

500. a central tube; 510. water permeable holes;

610. a pure water channel; 620. a pure water chamber; 630. a water passing gap; 640. a waste water channel; 650. a wastewater port; 660. a waste water gap; 670. a purified water inlet channel; 680. a purified water outlet passage; 690. a raw water inlet channel;

710. a first water pipe; 720. a second water pipe; 730. a third water pipe; 740. a fourth water pipe; 750. a fifth water pipe;

Detailed Description

It should be understood by those skilled in the art that the embodiments described below are only a part of the embodiments of the present application, and not all embodiments of the present application, and the part of the embodiments are intended to explain the technical principles of the present application and not to limit the scope of the present application. All other embodiments that can be obtained by a person skilled in the art based on the embodiments provided in the present application without inventive effort shall still fall within the scope of protection of the present application.

It should be noted that in the description of the present application, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are for convenience of description only, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art as the case may be.

The first embodiment of the present application:

as shown in fig. 1, the water purifying apparatus of the present embodiment includes a filter flask 100 and a filter assembly provided in the filter flask 100. The filter bottle 100 includes a bottle cap 110 and a bottle body 120. The filter assembly includes a pre-filter cartridge assembly 200, a reverse osmosis cartridge assembly 300, a post-filter cartridge assembly 400, and a center tube 500. The rear filter element assembly 400 is provided with a pure water passage 610 and a pure water cavity 620, a water passing gap 630 is arranged between the reverse osmosis filter element assembly 300 and the rear filter element assembly 400, the osmosis filter element assembly 300 is provided with a waste water passage 640 and a pure water inlet passage 670, a pure water outlet passage 680 is arranged between the front filter element assembly 200 and the osmosis filter element assembly 300, and a raw water inlet passage 690 is arranged between the filter bottle 100 and the front filter element assembly 200. Raw water enters the raw water inlet channel 690, is filtered by the pre-filter element assembly 200, enters the purified water outlet channel 680, and is then conveyed out of the purified water outlet channel 680, wherein one path is used by a user, and the other path is conveyed to the purified water inlet channel 670 for secondary filtration. The water in the purified water inlet channel 670 is filtered by the reverse osmosis filter element assembly 300 and the post-filter element assembly 400 and then enters the purified water cavity 620, and is conveyed out of the purified water channel 610 for users to use, and simultaneously, part of the wastewater which washes the reverse osmosis filter element assembly 300 enters the wastewater channel 640 and is then discharged.

The water purification unit in this embodiment utilizes a composite filter core structure to realize two kinds of water quality of water of play, one kind through the filterable water purification of leading filter element group spare 200, another kind is through leading filter element group spare 200, reverse osmosis filter element group spare 300 and the filterable pure water of rearmounted filter element group spare 400. Compare with the water purification unit who adopts a plurality of solitary filter core structures, the water purification unit of this embodiment has reduced water purification unit's volume on realizing multi-stage filtration's basis, has simplified water purification unit's structure.

The following is a detailed description of the structure and connection relationship of the components:

as shown in fig. 2, the rear cartridge assembly 400 includes a rear cartridge upper cover 410, an annular rear cartridge 420, and a rear cartridge lower cover 430. The opposite sides of the rear cartridge upper cover 410 and the rear cartridge lower cover 430 are provided with a first annular groove 411 and a second annular groove 431, respectively. The upper and lower ends of the ring-shaped rear filter element 420 are inserted into the first ring groove 411 and the second ring groove 431, respectively.

As can be understood by those skilled in the art, the first annular groove 411 and the second annular groove 431 are respectively provided on the opposite sides of the upper filter cartridge cover 410 and the lower filter cartridge cover 430, so that the upper filter cartridge cover 410 and the lower filter cartridge cover 430 can axially clamp the annular rear filter cartridge 420 therebetween through the first annular groove 411 and the second annular groove 431, prevent the annular rear filter cartridge 420 from moving in the radial direction, and firmly fix the annular rear filter cartridge 420. Meanwhile, the rear filter element upper cover 410, the rear filter element lower cover 430 and the outer side surface, the inner side surface and the end surface of the annular rear filter element 420 are in contact through the annular groove, and the sealing effect among the rear filter element upper cover 410, the rear filter element lower cover 430 and the annular rear filter element 420 can be improved.

With continued reference to fig. 2, the rear cartridge lower cover 430 is provided at a middle portion thereof with a boss 432, a circumferential edge of the rear cartridge lower cover 430 is provided with an annular projection 433, and a second annular groove 431 is formed between the boss 432 and the annular projection 433. By providing the boss 432, it is easier to position the post-filter element assembly 400 during assembly, and the boss 432 is easier to machine than providing two flanges on a flat surface to form an annular groove.

As shown in fig. 3, the bottle cap 110 is provided with a first annular structure 111, a second annular structure 112, a third annular structure 113, a fourth annular structure 114 and a fifth annular structure 115. A raw water inlet 1110 is arranged on the first annular structure 111, a purified water outlet 1120 is arranged on the second annular structure 112, a purified water inlet 1130 is arranged on the third annular structure 113, a waste water outlet 1140 is arranged on the fourth annular structure 114, and a purified water outlet 1150 is arranged on the fifth annular structure 115. A first water pipe 710, a second water pipe 720, a third water pipe 730, a fourth water pipe 740, and a fifth water pipe 750 are arranged side by side on one side of the bottle cap 110 in a radial direction. One end of the first water pipe 710 is communicated with a raw water inlet 1110; one end of the second water pipe 720 passes through the first annular structure 111 and is communicated with the purified water outlet 1120; one end of the third water pipe 730 passes through the first annular structure 111 and the second annular structure 112 to be communicated with the clean water inlet 1130; one end of the fourth water pipe 740 passes through the first annular structure 111, the second annular structure 112 and the third annular structure 113 to communicate with the waste water outlet 1140; one end of the fifth water pipe 750 passes through the first annular structure 111, the second annular structure 112, the third annular structure 113 and the fourth annular structure 114 to communicate with the pure water outlet 1150.

As can be appreciated by those skilled in the art, the bottle cap 510 is a side-inserted water pipe structure, so that when replacing the filter element, only the old filter element structure needs to be pulled out from the water pipe, and then the new filter element structure is inserted into the water pipe, thereby making it more convenient to install and replace the filter element structure of the water purifying device.

As shown in fig. 1, the annular rear filter element 420, the rear filter element upper cover 410 and the rear filter element lower cover 430 are respectively fixed together in a sealing manner to form a pure water chamber 620, the rear filter element upper cover 410 is provided with a pure water passage 610, and the top of the pure water passage 610 is connected with the fifth ring structure 115 in a sealing manner. The water filtered by the ring-shaped post-filter element 420 can enter the pure water chamber 620 and then be delivered to the outside through the pure water passage 610.

As shown in fig. 1, the reverse osmosis cartridge assembly 300 includes a reverse osmosis cartridge upper cover 320, a reverse osmosis cartridge 330, and a reverse osmosis cartridge lower cover 360, which are sequentially disposed. The reverse osmosis filter core 330 is sleeved outside the central tube 500, the side wall of the central tube 500 is provided with a water permeable hole 510, and one end of the central tube 500 far away from the reverse osmosis filter core upper cover 320 is closed. The reverse osmosis filter element upper cover 320 is further provided with a central hole 326 (shown in fig. 4) surrounded by the inner annular rib 322, the central pipe 500 passes through the central hole 326, and the outer side wall of the central pipe 500 is in sealing fit with the inner annular rib 322.

As shown in fig. 4, the reverse osmosis filter element upper cover 320 is provided with an outer annular rib 321, an inner annular rib 322 and an annular cover 323. The top end of the outer annular rib 321 is connected with the lower surface of the rear filter element upper cover 410 in a sealing way, and the inner annular rib 321 is inserted into the boss 432. The reverse osmosis filter element upper cover 320 is provided with a first convex rib 324 uniformly distributed between an outer annular convex rib 321 and an inner annular convex rib 322, a second convex rib 325 distributed at intervals is arranged at the top end of the inner annular convex rib 322, and the reverse osmosis filter element upper cover 320 is abutted against the rear filter element lower cover 430 through the first convex rib 324 and the second convex rib 325. A water passing gap 630 is formed between the reverse osmosis filter element upper cover 320, the outer side wall of the annular post-filter element 420 and the lower surface of the post-filter element lower cover 410.

As shown in fig. 1, the annular cover 323 is disposed on a side of the reverse osmosis filter element upper cover 320 close to the reverse osmosis filter element 330, and the annular cover 323 is disposed on an outer side of the reverse osmosis filter element 330 and is in sealing engagement with a side wall of the reverse osmosis filter element 330. The reverse osmosis cartridge assembly 300 also includes a waste water jacket 310. The wastewater diversion sleeve 310 is sleeved on the outer side of the reverse osmosis filter element upper cover 320, the top of the wastewater diversion sleeve 310 is hermetically connected with the fourth annular structure 114, and the bottom of the wastewater diversion sleeve 310 is hermetically connected with the outer side of the annular cover 323, so that a wastewater channel 640 is formed among the wastewater diversion sleeve 310, the outer side surface of the outer annular convex rib 321 and the upper surface of the rear filter element upper cover 410. The reverse osmosis filter element upper cover 320 is provided with a third convex rib 327 (as shown in fig. 4), and is abutted against the upper end surface of the reverse osmosis filter element 330 through the third convex rib 327, so that a wastewater gap 660 is formed between the upper end surface of the reverse osmosis filter element 330 and the upper end surface, the reverse osmosis filter element upper cover is provided with a wastewater hole 650, and the wastewater hole 650 is communicated with the wastewater gap 660 and the wastewater channel 640.

With continued reference to fig. 1, the reverse osmosis cartridge assembly 300 further includes a moisture clean water jacket 340 and a housing 350. The water purification and separation sleeve 340 is positioned at the top of the shell 350, the top of the water purification and separation sleeve 340 is hermetically connected with the third annular structure 113, and the bottom of the water purification and separation sleeve 340 is hermetically connected with the reverse osmosis filter element upper cover 320. The outer shell 350 is sleeved on the outer side of the reverse osmosis filter element 330, the outer shell 350 is hermetically connected with the reverse osmosis filter element lower cover 360, and the purified water distributing sleeve 340 is sleeved on the outer side of the waste water distributing sleeve 310. A purified water inlet channel 670 is formed among the shell 350, the purified water diversion sleeve 340, the reverse osmosis filter element 330 and the wastewater diversion sleeve 310. The front filter element assembly 200 includes a raw water jacket 210, a front filter element frame 220, and a front filter element 230. The front filter element framework 220 is provided with a water through hole 221. The front filter element 230 is sleeved outside the front filter element framework 220, and the front filter element framework 220 is sleeved outside the shell 350. The raw water distributing sleeve 210 is sleeved outside the water purifying and distributing sleeve 340, the top of the raw water distributing sleeve 210 is hermetically connected with the second annular structure 112, the bottom of the raw water distributing sleeve 210 is hermetically connected with the front filter element framework 220, and the bottom ends of the front filter element framework 220 and the front filter element 230 are hermetically connected with the bottom cover 600. A purified water outlet passage 680 is formed between the inside of the front filter element assembly 100 and the outside of the reverse osmosis filter element assembly 300, and a raw water inlet passage 690 is formed between the outside of the front filter element assembly 100 and the inside of the bottle body 120.

When the water purifying apparatus in this embodiment operates, raw water enters the raw water inlet channel 690 from the raw water inlet 1110 through the first water pipe 710, and is filtered into purified water by the pre-filter 230. The purified water enters the purified water outlet channel 680 through the water through holes 221 of the front filter element framework 220, enters the second water pipe 720 from the purified water outlet port 1120, and is conveyed to the outside for users to use. Part of the purified water is conveyed to the third water pipe 730 and enters the purified water inlet channel 670 from the purified water inlet 1130, and a part of the purified water is filtered by the reverse osmosis filter element 330, enters the pipe cavity of the central pipe 500 through the water permeable holes 510 of the central pipe 500, enters the water passing gap 630 from the gaps among the second ribs 325 which are distributed at intervals, and is filtered into the purified water by the post-filter element 420. Pure water enters the pure water cavity 620, passes through the pure water passage 610, and is delivered from the pure water outlet 1150 to the outside through the fifth water pipe 750 for use by a user. Because the reverse osmosis filter element 330 has a layered structure, a part of the purified water flows out from the upper end surface of the reverse osmosis filter element 330 into the waste water gap 660, flows into the waste water passage 640 through the waste water holes 650, and is discharged from the fifth water holes 1140 through the fourth water pipe 740.

It can be understood by those skilled in the art that the front filter element assembly 200, the reverse osmosis filter element assembly 300, the rear filter element assembly 400 and the central tube 500 are disposed on the reverse osmosis filter element lower cover 360, so that the reverse osmosis filter element lower cover 360 can be installed with each assembly at the time of assembly, and the whole filter assembly is installed in the bottle body 120 again, which is beneficial to simplifying the assembly process.

As can be further understood by those skilled in the art, by providing the waste water gap 660, the waste water hole 650 and the waste water channel 640, impurities between layers of the layered reverse osmosis filter element 330 are taken away by water flow and discharged, so that a cleaning effect is provided for the reverse osmosis filter element 330, which is beneficial to maintaining the filtering effect of the reverse osmosis filter element 330.

As shown in fig. 5 to 9, a first support rib 211 is disposed inside the raw water diversion sleeve 210, a second support rib 222 is disposed inside the front filter element framework 220, a third support rib 341 is disposed inside the purified water diversion sleeve 340, a fourth support rib 351 is disposed inside the housing 350, and a fifth support rib 311 is disposed inside the waste water diversion sleeve 310. In the positional relationship shown in fig. 1, the raw water diversion cover 210 abuts against the purified water diversion cover 340 through the first support rib 211, the front filter element framework 220 abuts against the housing 350 through the second support rib 222, the purified water diversion cover 340 abuts against the waste water diversion cover 310 through the third support rib 341, the housing 350 abuts against the reverse osmosis filter element 330 through the fourth support rib 351, and the waste water diversion cover 310 abuts against the rear filter element upper cover 410 through the fifth support rib 311.

Through setting up the brace rod for support each other between each subassembly and lean on, play the effect of consolidating whole structure on the one hand, on the other hand brace rod plays the positioning action, is favorable to improving the packaging efficiency.

As shown in fig. 5 and 6, the raw water diversion cover 210 is provided with a first sealing ring installation groove 212 and a second sealing ring installation groove 213, and the front filter element frame 220 is provided with a first flange 223. After the sealing ring is installed in the installation groove, the end of the first sealing ring installation groove 212 of the raw water diversion sleeve 210 abuts against the second annular structure 112 through the sealing ring, so that the sealing connection is completed, and the end of the second sealing ring installation groove 213 abuts against the first flanging 223 through the sealing ring, so that the sealing connection is completed. As shown in fig. 7 and 8, the water purification jacket 340 is provided with a third packing groove 342 and a fourth packing groove 343, and the housing 350 is provided with a second burring 352 and a fifth packing groove 353. After the sealing ring is arranged in the mounting groove, the end of the third sealing ring mounting groove 342 of the water purification and diversion sleeve 340 is abutted against the third annular structure 113 through the sealing ring, so that the sealing connection is completed, the end of the fourth sealing ring mounting groove 343 is abutted against the second flanging 352 through the sealing ring, so that the sealing connection is completed, and the end of the fifth sealing ring mounting groove 353 of the shell 350 is abutted against the reverse osmosis filter element lower cover 360 through the sealing ring. As shown in fig. 9, the wastewater jacket 310 is provided with a sixth packing installation groove 312 and a third flange 313. After the sealing ring is installed in the installation groove, the end of the sixth sealing ring installation groove 312 of the wastewater diversion sleeve 310 abuts against the fourth annular structure 112 through the sealing ring, so that the sealing connection is completed, and the inner side of the third flanging 313 abuts against the sealing ring installed on the outer side wall of the reverse osmosis filter element upper cover 320, so that the sealing connection is completed. As shown in fig. 2, the rear filter element upper cover 410 is provided with a seventh sealing ring installation groove 412, and after the sealing ring is installed in the installation groove, the end of the seventh sealing ring installation groove 412 of the rear filter element upper cover 410 abuts against the fifth ring structure 115 through the sealing ring, thereby completing the sealing connection.

As can be understood by those skilled in the art, by providing the first flange 223 and the second flange 352 on the front filter element frame 220 and the housing 350, the vertical flange portion is connected with the raw water jacket 210 and the second water jacket 210 in a sealing manner, and the horizontal flange portion provides a supporting point for the raw water jacket 210 and the second water jacket 210, so that relative movement between the front filter element frame 220 and the raw water jacket 210 and between the housing 350 and the second water jacket 210 is avoided, and the structure is firmer and the sealing performance is better. Through establishing third turn-ups 313 at waste water diversion cover 310 for vertical turn-ups portion and reverse osmosis filter core upper cover 320 sealing connection, horizontal turn-ups portion leans on with reverse osmosis filter core lid 320 counterbalance, avoids taking place relative movement between waste water diversion cover 310 and the reverse osmosis filter core lid 320, thereby makes the structure more firm, and the leakproofness is better.

Second embodiment of the present application:

as shown in fig. 10, in the present embodiment, unlike the first embodiment, the rear filter cartridge assembly 400 includes only a rear filter cartridge upper cover 410 and a rear filter cartridge 420, and the rear filter cartridge 420 is disposed inside a center tube 500. Adopt the scheme of this embodiment for whole composite filter's structure is compacter, has fixed effect to rearmounted filter core 420 in horizontal and vertical moreover, and is fixed more firm. However, the center tube 500 of this embodiment requires customization and reduces the thickness of the reverse osmosis cartridge 330, affecting the filtration effectiveness of the reverse osmosis cartridge 330.

So far, the technical solutions of the present application have been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the scope of protection of the present application is not limited to these specific embodiments. The technical solutions in the above embodiments can be split and combined, and equivalent changes or substitutions can be made on related technical features by those skilled in the art without departing from the technical principles of the present application, and any changes, equivalents, improvements, and the like made within the technical concept and/or technical principles of the present application will fall within the protection scope of the present application.

Claims (10)

1. A water purifying device is characterized by comprising a filter flask, a front filter element component, a reverse osmosis filter element component and a central tube which are sequentially arranged from outside to inside, and a rear filter element component arranged at the top of the central tube,

the post-filter element component comprises a post-filter element upper cover, an annular post-filter element and a post-filter element lower cover which are arranged in sequence,

the opposite sides of the post-positioned filter element upper cover and the post-positioned filter element lower cover are respectively provided with a first annular groove and a second annular groove,

the upper end and the lower end of the annular rear filter element are respectively embedded into the first annular groove and the second annular groove.

2. The water purifying apparatus of claim 1, wherein a boss is provided at a middle portion of the rear cartridge lower cover, an annular protrusion is provided at a circumferential edge of the rear cartridge lower cover, and the second annular groove is formed between the boss and the annular protrusion; and/or the like and/or,

the annular rear filter element, the rear filter element upper cover and the rear filter element lower cover are fixed together in a sealing mode respectively.

3. The water purification apparatus of claim 2, wherein a purified water chamber is formed between the inner side wall of the annular post-filter element, the top surface of the boss and the lower surface of the post-filter element upper cover;

the rear filter element upper cover is provided with a pure water channel, and the pure water channel is communicated with the pure water cavity.

4. The water purification apparatus of claim 3, wherein the reverse osmosis filter element assembly comprises a reverse osmosis filter element upper cover, a reverse osmosis filter element and a reverse osmosis filter element lower cover which are arranged in sequence;

the reverse osmosis filter element is sleeved on the outer side of the central tube, a water permeable hole is formed in the side wall of the central tube, and one end, far away from the upper cover of the reverse osmosis filter element, of the central tube is closed;

an annular cover is arranged on one side, close to the reverse osmosis filter element, of the upper cover of the reverse osmosis filter element, and the annular cover is sleeved on the outer side of the reverse osmosis filter element and is in sealing fit with the side wall of the reverse osmosis filter element;

an outer annular convex rib and an inner annular convex rib are arranged on one side, away from the reverse osmosis filter element, of the reverse osmosis filter element upper cover, the top end of the outer annular convex rib is hermetically connected with the lower surface of the rear filter element upper cover, and the inner annular convex rib is inserted into the boss, so that a water passing gap is formed among the reverse osmosis filter element upper cover, the outer side wall of the annular rear filter element and the lower surface of the rear filter element lower cover;

the reverse osmosis filter element upper cover is also provided with a central hole surrounded by the inner side annular convex rib, the central pipe penetrates through the central hole, and the central pipe is in sealing fit with the inner side annular convex rib.

5. The water purification apparatus of claim 4, wherein the reverse osmosis cartridge assembly further comprises a waste water jacket;

the waste water distributing sleeve is sleeved on the outer side of the upper cover of the reverse osmosis filter element, and the bottom of the waste water distributing sleeve is hermetically connected with the upper cover of the reverse osmosis filter element, so that a waste water channel is defined by the waste water distributing sleeve, the outer side surface of the outer annular convex rib and the upper surface of the upper cover of the rear filter element;

a wastewater gap is formed between the lower surface of the upper cover of the reverse osmosis filter element and the upper end surface of the reverse osmosis filter element, a wastewater hole is formed in the upper cover of the reverse osmosis filter element, and the wastewater hole is communicated with the wastewater gap and the wastewater channel.

6. The water purification apparatus of claim 5, wherein the reverse osmosis cartridge assembly further comprises a housing and a water purification jacket positioned on top of the housing and sealingly connected to the housing;

the outer shell is sleeved on the outer side of the reverse osmosis filter element and is in sealing connection with the lower cover of the reverse osmosis filter element;

the purified water dividing sleeve is sleeved outside the waste water dividing sleeve;

and a purified water inlet channel is formed among the shell, the purified water jacket, the reverse osmosis filter element and the waste water jacket.

7. The water purification apparatus of claim 6, wherein the pre-filter assembly comprises a pre-filter, a pre-filter framework disposed inside the pre-filter, and a raw water diversion jacket disposed on top of the pre-filter;

the front filter element framework is sleeved on the outer side of the shell, and water passing holes are formed in the side wall of the front filter element framework;

the raw water diversion sleeve is sleeved on the outer side of the water purification jacket, and the raw water diversion sleeve is connected with the front filter element framework in a sealing manner;

the front filter element and the front filter element framework are respectively connected with the reverse osmosis lower cover in a sealing mode, and a water purification outlet channel is formed between the front filter element assembly and the shell and between the water purification water jackets.

8. The water purifying apparatus of claim 7, wherein a raw water inlet channel is formed between the filter flask and the pre-filter element member, and water in the raw water inlet channel is filtered by the pre-filter element and then enters the purified water outlet channel through the water passing hole.

9. The water purification apparatus of claim 8, wherein the filter flask comprises a flask cap and a flask body, the flask cap is provided with a raw water inlet, a purified water outlet, a purified water inlet, a waste water outlet, and a purified water outlet;

the raw water inlet is communicated with the raw water inlet channel, the purified water outlet is communicated with the purified water outlet channel, the purified water inlet is communicated with the purified water inlet channel, the wastewater outlet is communicated with the wastewater channel, and the purified water outlet is communicated with the purified water channel.

10. A water purifying device is characterized by comprising a filter flask, a front filter element component, a reverse osmosis filter element component, a central tube and a rear filter element component which are arranged in sequence from outside to inside,

the post-filter element component comprises an annular post-filter element,

the reverse osmosis filter element assembly comprises a reverse osmosis filter element and a reverse osmosis filter element upper cover, and the reverse osmosis filter element upper cover is provided with an annular groove and a through hole;

the top end of the central tube is inserted into the annular groove and is connected with the upper cover of the reverse osmosis filter element in a sealing way;

the top of the annular postposition filter element is abutted to the upper cover of the reverse osmosis filter element in a sealing manner, and the bottom end of the annular postposition filter element is abutted to the partition plate formed in the central tube.

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