CN220951325U - Water purifier - Google Patents

Abstract

The utility model discloses a water purifier, which comprises a reverse osmosis filter element, a flushing waterway, a first control valve and a second control valve, wherein the reverse osmosis filter element is provided with a raw water inlet and a pure water outlet, the flushing waterway is respectively connected with the raw water inlet and the pure water outlet and comprises a liquid supply box, when pure water passes through the liquid supply box, a cleaning liquid for flushing the reverse osmosis filter element is formed in the liquid supply box, and the flushing waterway further comprises the first control valve and the second control valve, wherein the first control valve is connected between a liquid outlet of the liquid supply box and the raw water inlet and is used for controlling the on-off of the liquid supply box and the raw water inlet; the second control valve is used for controlling the on-off of the liquid inlet of the liquid supply box. According to the utility model, the flushing waterway is arranged in the water purifier, and the liquid supply box for containing the cleaning liquid is arranged on the flushing waterway, so that the reverse osmosis membrane can be flushed by the cleaning liquid, calcium and magnesium ions on the reverse osmosis membrane are effectively removed, the influence of the calcium and magnesium ions deposited on the reverse osmosis membrane on the filtering effect of the reverse osmosis membrane is avoided, and the service life of the reverse osmosis filter element is prolonged.

Description

Water purifier

Technical Field

The utility model belongs to the field of water purifying equipment, and particularly relates to a water purifier.

Background

In recent years, along with the improvement of living standard, consumers attach more and more importance to the safety of drinking water, so that the popularization rate of the water purifier is higher and higher, and the water purifier is mainly a reverse osmosis water purifier. At present, the mainstream reverse osmosis water purifier on the market develops towards the direction of a large-flux composite filter element, the core replacement cost is increased, in particular to a reverse osmosis filter element, a reverse osmosis membrane in the reverse osmosis filter element is high in filtration grade, calcium and magnesium ions in water can be deposited on the surface of the reverse osmosis membrane, a traditional reverse osmosis water purifier only increases a flushing program, the surface of the reverse osmosis membrane is flushed through clear water, and the calcium and magnesium ions are difficult to flush completely, so that the service life of the reverse osmosis filter element is shorter.

Disclosure of utility model

The utility model aims to provide a water purifier to solve at least one of the problems.

In order to solve the technical problems, the utility model adopts the following technical scheme: the water purifier comprises a reverse osmosis filter element, a flushing waterway, a first control valve and a second control valve, wherein the reverse osmosis filter element is provided with a raw water inlet and a pure water outlet, the flushing waterway is respectively connected with the raw water inlet and the pure water outlet and comprises a liquid supply box, when pure water passes through the liquid supply box, a cleaning liquid for flushing the reverse osmosis filter element is formed in the liquid supply box, and the flushing waterway further comprises a first control valve and a second control valve, wherein the first control valve is connected between a liquid outlet of the liquid supply box and the raw water inlet and is used for controlling on-off between the liquid outlet and the raw water inlet; the second control valve is used for controlling the on-off of the liquid inlet of the liquid supply box so as to prevent the cleaning liquid in the liquid supply box from flowing back.

In the above water purifier, the water purifier further comprises a raw water inlet waterway and an ejector, wherein the water inlet end of the ejector is communicated with the water outlet of the raw water inlet waterway, the siphon end of the ejector is communicated with the liquid outlet end of the first control valve, and the water outlet end of the ejector is communicated with the raw water inlet.

In the above-mentioned purifier, the confession liquid box is including the box body that is equipped with the cavity, be equipped with the feed liquor board in the box body and be located the drain board of feed liquor board below to separate into the feed liquor chamber of communicating with the inlet at box body top with the cavity, be located the confession liquid chamber between feed liquor board and the drain board and with the mixed chamber of the liquid outlet intercommunication of box body bottom, be equipped with the feed liquor hole of intercommunication feed liquor chamber and confession liquid chamber on the feed liquor board, be equipped with the play liquid hole of intercommunication confession liquid chamber and mixed chamber on the drain board.

In the above water purifier, a floating ball is arranged in the liquid inlet cavity, and when the cavity is filled with the cleaning liquid, the floating ball is pushed to seal the liquid inlet of the box body to form the second control valve.

In the water purifier, the height of the top surface of the liquid inlet cavity is gradually reduced from the liquid inlet to the periphery, so that the top surface of the liquid inlet cavity is obliquely arranged.

In the above-mentioned water purifier, the top of play liquid board is equipped with the annular protruding muscle that encircles the play liquid hole, and annular protruding muscle extends to the confession intracavity to enclose into the drain passageway that communicates confession liquid chamber and play liquid hole.

In the above water purifier, the outer diameter of the annular rib gradually increases from top to bottom, so that the outer side wall of the annular rib is obliquely arranged.

In the water purifier, the liquid inlet holes and the liquid inlet ends of the liquid outlet channels are staggered, so that the projections of the liquid inlet holes and the liquid outlet ends of the liquid outlet channels are not overlapped on a horizontal plane.

In the above water purifier, the second control valve is an electromagnetic valve, and the second control valve is connected between the liquid inlet of the liquid supply box and the pure water outlet.

In the above water purifier, the first control valve is an electromagnetic valve, the liquid inlet end of the first control valve is communicated with the liquid outlet of the liquid supply box, and the liquid outlet end of the first control valve is communicated with the raw water inlet.

The beneficial effects of the utility model are as follows:

The water purifier comprises a reverse osmosis filter element, a flushing waterway, a first control valve and a second control valve, wherein the reverse osmosis filter element is provided with a raw water inlet and a pure water outlet, the flushing waterway is respectively connected with the raw water inlet and the pure water outlet and comprises a liquid supply box, when pure water passes through the liquid supply box, a cleaning liquid for flushing the reverse osmosis filter element is formed in the liquid supply box, and the flushing waterway further comprises a first control valve and a second control valve, wherein the first control valve is connected between a liquid outlet of the liquid supply box and the raw water inlet and is used for controlling on-off between the liquid outlet and the raw water inlet; the second control valve is used for controlling the on-off of the liquid inlet of the liquid supply box so as to prevent the cleaning liquid in the liquid supply box from flowing back. The technical scheme has the following technical effects:

According to the utility model, the flushing waterway is arranged in the water purifier, and the liquid supply box for containing the cleaning liquid is arranged on the flushing waterway, so that the cleaning waterway can flush the reverse osmosis membrane through the cleaning liquid, calcium and magnesium ions on the reverse osmosis membrane are effectively removed, the influence of calcium and magnesium ions deposited on the reverse osmosis membrane on the filtering effect of the reverse osmosis membrane is avoided, the service life of the reverse osmosis filter element is prolonged, the on-off between the liquid supply box and the raw water inlet of the reverse osmosis filter element can be realized through the on-off of the first control valve by arranging the first control valve on the flushing waterway, and the pollution of water flow to be filtered caused by the fact that the cleaning liquid in the liquid supply box enters the raw water inlet of the reverse osmosis filter element when the reverse osmosis filter element is not flushed is avoided; through setting up first control valve on the wash water way, can pass through the break-make of second control valve, when not washing reverse osmosis filter core, prevent the washing liquid in the feed box and to the pollution of pure water that pure water delivery port backward flow caused, guarantee user's drinking water's safety.

The water purifier further comprises a raw water inlet waterway and an ejector, wherein the water inlet end of the ejector is communicated with the water outlet of the raw water inlet waterway, the siphon end of the ejector is communicated with the liquid outlet end of the first control valve, and the water outlet end of the ejector is communicated with the raw water inlet. When the water flow flows from the water inlet end of the ejector to the water outlet end of the ejector, the siphon end can extract the cleaning liquid in the flushing waterway into the ejector, the cleaning liquid is mixed with the water flow in the ejector and flows out of the ejector through the water outlet end so as to flow to the raw water inlet, and the ejector is arranged, so that a water pump is not required to be arranged on a flushing water path, the smooth flow of the cleaning liquid in the flushing waterway can be realized, and the structure of the water purifier is simplified.

The liquid supply box comprises a box body provided with a cavity, a liquid inlet plate and a liquid outlet plate positioned below the liquid inlet plate are arranged in the box body, so that the cavity is divided into a liquid inlet cavity communicated with a liquid inlet at the top of the box body, a liquid supply cavity positioned between the liquid inlet plate and the liquid outlet plate and a mixed cavity communicated with a liquid outlet at the bottom of the box body, liquid inlet holes communicated with the liquid inlet cavity and the liquid supply cavity are formed in the liquid inlet plate, and liquid outlet holes communicated with the liquid supply cavity and the mixed cavity are formed in the liquid outlet plate. Through setting up three-layer cavity structure for pure water can get into the feed liquor chamber through the inlet, then gets into the feed liquor chamber through the feed liquor hole, dissolves the acidic solid of feed liquor intracavity or mixes with the acidic liquid of feed liquor intracavity, in order to form the washing liquid, after the washing liquid rethread goes into the mixing chamber and carries out intensive mixing, flows out the feed liquor box from the liquid outlet, and the mixing effect is better.

A floating ball is arranged in the liquid inlet cavity, and when the cavity is filled with cleaning liquid, the floating ball is pushed to seal the liquid inlet of the box body so as to form a second control valve. When the reverse osmosis filter element is cleaned, the liquid level of the water inlet cavity is low, the floating ball does not block the liquid inlet, and pure water smoothly enters the liquid inlet cavity through the liquid inlet; when need not to wash reverse osmosis filter core, first control valve is closed, and the rivers that continue to get into the feed liquor box can be full of mixing chamber, feed liquor chamber and feed liquor chamber in proper order, until filling the cavity, and when the liquid level in the feed liquor chamber risees, the floater floats under the effect of buoyancy, and when the washing liquid was filled the cavity, the floater just floated to the feed liquor mouth of seal box body to form the second control valve of seal feed liquor box feed liquor mouth. Through setting up the floater in order to form the second control valve at the feed liquor intracavity of feed liquor box for the second control valve sets up in the inside of feed liquor box, and simple structure is reliable, and is not fragile, reduction in production cost.

The top surface height of the liquid inlet cavity gradually decreases from the liquid inlet to the periphery, so that the top surface of the liquid inlet cavity is obliquely arranged. When the floating ball floats up along with the rising liquid level in the liquid inlet cavity, the top surface of the liquid inlet cavity can guide the floating ball in the horizontal direction, so that the floating ball gradually moves towards the liquid inlet until the floating ball is aligned with the liquid inlet and seals the liquid inlet, and smooth closing of the floating ball to the liquid inlet is ensured.

The top of drain board is equipped with the annular protruding muscle that encircles the liquid hole, and annular protruding muscle extends to the confession intracavity to enclose into the drain passageway that communicates confession liquid chamber and liquid hole. Through setting up annular protruding muscle in the confession liquid intracavity for all get into the pure water in confession liquid chamber all need be earlier with the acidic solid or the liquid contact back that is used for generating the washing liquid just can flow out the liquid outlet, make the mixture of washing liquid more even, avoid partial pure water directly to flow through the drain channel, guarantee to flow out the washing liquid of confession liquid box and have certain concentration, guarantee the washing effect of washing liquid to calcium magnesium ion etc. on reverse osmosis membrane promptly.

The outer diameter of the annular convex rib is gradually increased from top to bottom, so that the outer side wall of the annular convex rib is obliquely arranged. The annular protruding muscle that the lateral wall slope set up can drain the pure water that flows into the confession liquid chamber, and after pure water flowed down from the feed liquor hole, along the lateral wall of annular protruding muscle at confession liquid intracavity gliding to form the vortex in confession liquid intracavity, make pure water can carry out abundant dilution to confession liquid intracavity and mix, in order to form the washing liquid, prevent to mix uneven phenomenon.

The liquid inlet holes are staggered with the liquid inlet ends of the liquid outlet channels so that the projections of the liquid inlet holes and the liquid outlet ends of the liquid outlet channels are not overlapped on the horizontal plane. The pure water flowing into the liquid supply cavity from the liquid inlet hole can avoid the liquid inlet end at the top of the liquid outlet channel, so that the problem that the concentration of the cleaning liquid is low due to the fact that the pure water flowing down from the liquid inlet hole directly flows into the liquid inlet channel is avoided, and the pure water flowing into the liquid supply cavity from the liquid inlet hole can enter the liquid outlet channel after the cleaning liquid with a certain concentration is formed in the liquid supply cavity is guaranteed.

The first control valve is the solenoid valve, and the feed liquor end of first control valve communicates with the liquid outlet of feed box, and the play liquid end of first control valve communicates with the raw water inlet, adopts the solenoid valve as first control valve for first control valve has that response speed is fast, the reliability is high, control accuracy is high and long service life's advantage.

The features and advantages of the present utility model will be disclosed in detail in the following detailed description and the accompanying drawings.

Drawings

The utility model is further described with reference to the drawings and detailed description which follow:

FIG. 1 is a water circuit diagram of a water purifier according to a first embodiment;

FIG. 2 is a cross-sectional view of the ejector in the first embodiment;

FIG. 3 is a cross-sectional view of a liquid supply cartridge according to the first embodiment;

Fig. 4 is a water path diagram of a water purifier according to a second embodiment.

Reference numerals:

100. Raw water inlet waterway;

200. a reverse osmosis filter element; 210. a raw water inlet; 220. a pure water outlet;

300. flushing the waterway;

400. A liquid supply box; 410. a case body; 411. a liquid inlet; 412. a liquid outlet; 420. a liquid inlet plate; 421. a liquid inlet hole; 430. a liquid outlet plate; 431. a liquid outlet hole; 432. annular convex ribs; 433. a liquid outlet channel; 440. a cavity; 441. a liquid inlet cavity; 4411. a floating ball; 442. a liquid supply chamber; 443. a mixing chamber;

500. a first control valve;

600. A second control valve;

700. a jet device; 710. a water inlet end; 720. a water outlet end; 730. a siphon end.

Detailed Description

The utility model provides a water purifier, which comprises a reverse osmosis filter element, a flushing waterway, a first control valve and a second control valve, wherein the reverse osmosis filter element is provided with a raw water inlet and a pure water outlet, the flushing waterway is respectively connected with the raw water inlet and the pure water outlet and comprises a liquid supply box, when pure water passes through the liquid supply box, a cleaning liquid for flushing the reverse osmosis filter element is formed in the liquid supply box, and the flushing waterway further comprises the first control valve and the second control valve, wherein the first control valve is connected between a liquid outlet of the liquid supply box and the raw water inlet and is used for controlling the on-off of the liquid outlet and the pure water inlet; the second control valve is used for controlling the on-off of the liquid inlet of the liquid supply box so as to prevent the cleaning liquid in the liquid supply box from flowing back. According to the utility model, the flushing waterway is arranged in the water purifier, and the liquid supply box for containing the cleaning liquid is arranged on the flushing waterway, so that the cleaning waterway can flush the reverse osmosis membrane through the cleaning liquid, calcium and magnesium ions on the reverse osmosis membrane are effectively removed, the influence of calcium and magnesium ions deposited on the reverse osmosis membrane on the filtering effect of the reverse osmosis membrane is avoided, the service life of the reverse osmosis filter element is prolonged, the on-off between the liquid supply box and the raw water inlet of the reverse osmosis filter element can be realized through the on-off of the first control valve by arranging the first control valve on the flushing waterway, and the pollution of water flow to be filtered caused by the fact that the cleaning liquid in the liquid supply box enters the raw water inlet of the reverse osmosis filter element when the reverse osmosis filter element is not flushed is avoided; through setting up first control valve on the wash water way, can pass through the break-make of second control valve, when not washing reverse osmosis filter core, prevent the washing liquid in the feed box and to the pollution of pure water that pure water delivery port backward flow caused, guarantee user's drinking water's safety.

The technical solutions of the embodiments of the present utility model will be explained and illustrated below with reference to the drawings of the embodiments of the present utility model, but the following embodiments are only preferred embodiments of the present utility model, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Embodiment one:

1-3, including reverse osmosis filter core 200 that is equipped with reverse osmosis membrane in inside, reverse osmosis filter core 200 has raw water inlet 210, pure water delivery port 220 and waste water delivery port, still includes washing water route 300, and washing water route 300's both ends link to each other with pure water delivery port 220 and raw water inlet 210 respectively, wash water route 300 and include the confession liquid box 400, can place acidic solid such as citric acid solid in the confession liquid box 400, also can place acidic liquid such as citric acid or hydrochloric acid, when pure water gets into in the confession liquid box 400, can dissolve acidic solid in the confession liquid box 400 or dilute the acidic liquid in the confession liquid box 400 in order to form acidic washing liquid. The flushing waterway 300 further comprises a first control valve 500 and a second control valve, wherein the first control valve 500 is connected between the liquid outlet 412 of the liquid supply box 400 and the raw water inlet 210, the liquid inlet end of the first control valve 500 is communicated with the liquid outlet 412 of the liquid supply box 400, the liquid outlet end of the first control valve 500 is communicated with the raw water inlet 210 so as to be used for controlling the on-off between the liquid outlet 412 of the liquid supply box 400 and the raw water inlet 210, the first control valve 500 is preferably an electromagnetic valve, and the electromagnetic valve is used as the first control valve 500, so that the first control valve 500 has the advantages of high response speed, high reliability, high control precision and long service life; the second control valve is used for controlling the on-off of the liquid inlet 411 of the liquid supply box 400 so as to prevent the back flow of the cleaning liquid in the liquid supply box 400.

The water purifier has a working mode and a cleaning mode.

When the water purifier is in a cleaning mode, the first control valve 500 and the second control valve are opened first, water flows into the reverse osmosis filter element 200 through the raw water inlet 210, pure water formed by filtering of the reverse osmosis filter element 200 flows into the second control valve through the pure water outlet 220, enters the liquid supply box 400 through the second control valve, dissolves acidic solids or dilutes acidic liquid in the liquid supply box 400 to form cleaning liquid, then flows into the first control valve 500 through the liquid outlet 412 of the liquid supply box 400, flows into the reverse osmosis filter element 200 through the first control valve 500 and the raw water inlet 210 in sequence to flush a reverse osmosis membrane, calcium and magnesium ions on the reverse osmosis membrane are removed, waste water generated after flushing is discharged to a waste water collecting position of the water purifier through the waste water outlet and a waste water channel, and structures such as a waste water electromagnetic valve on a waste water channel can be flushed when the waste water channel passes through. After the cleaning solution is washed, the first control valve 500 and the second control valve are closed to prevent the cleaning solution from flowing from the cleaning water path to the reverse osmosis filter element 200, and the water flow without the cleaning solution, which continuously enters the reverse osmosis filter element 200, can carry out secondary washing on the reverse osmosis membrane to remove the cleaning solution attached to the reverse osmosis membrane, and the PH value in the reverse osmosis filter element 200 is adjusted to facilitate the subsequent continuous filtration of the drinking water.

When the water purifier is in the working mode, water flows into the reverse osmosis filter element 200 through the raw water inlet 210, pure water formed by filtering of the reverse osmosis filter element 200 flows to the water taking position of the water purifier through the pure water outlet 220 for drinking by a user, waste water formed by filtering of the reverse osmosis filter element 200 is discharged to the waste water collecting position of the water purifier through the waste water outlet, at the moment, the first control valve 500 and the second control valve are both closed, the closed first control valve 500 can prevent cleaning liquid in the liquid supply box 400 from entering the raw water inlet 210 of the reverse osmosis filter element 200 to cause pollution of water flow to be filtered, and the closed second control valve can prevent cleaning liquid in the liquid supply box 400 from flowing back to the pure water outlet 220 to cause pollution of pure water, so that the safety of drinking water of the user is ensured.

According to the utility model, the flushing waterway 300 is arranged in the water purifier, and the liquid supply box 400 for containing the cleaning liquid is arranged on the flushing waterway 300, so that the cleaning waterway can flush the reverse osmosis membrane through the cleaning liquid, calcium and magnesium ions on the reverse osmosis membrane are effectively removed, the influence of calcium and magnesium ions deposited on the reverse osmosis membrane on the filtering effect of the reverse osmosis membrane is avoided, the service life of the reverse osmosis filter element 200 is prolonged, the on-off between the liquid supply box 400 and the raw water inlet 210 of the reverse osmosis filter element 200 can be realized through the on-off of the first control valve 500 by arranging the first control valve 500 on the flushing waterway 300, and the cleaning liquid in the liquid supply box 400 is prevented from entering the raw water inlet 210 of the reverse osmosis filter element 200 to pollute water flow to be filtered when the reverse osmosis filter element 200 is not flushed; by arranging the first control valve 500 on the flushing waterway 300, the cleaning solution in the liquid supply box 400 is prevented from flowing back to the pure water outlet 220 to pollute the pure water when the reverse osmosis filter element 200 is not flushed through the on-off of the second control valve, so that the safety of drinking water of a user is ensured.

The water purifier in this embodiment further includes a raw water inlet waterway 100 and an ejector 700, where the raw water inlet waterway 100 may be directly connected to a tap water pipe, so that the water flowing into the raw water inlet 210 is unfiltered tap water, and a pre-filter element may be disposed, so that the water flowing into the reverse osmosis filter element 200 is tap water with impurities primarily filtered by the pre-filter element. The raw water intake waterway 100 is communicated with the reverse osmosis filter element 200 through the ejector 700, as shown in fig. 2, the ejector 700 is provided with an intake end 710, an outlet end 720 and a siphon end 730, the intake end 710 of the ejector 700 is communicated with the water outlet of the raw water intake waterway 100, the outlet end 720 of the ejector 700 is communicated with the raw water inlet 210, the siphon end 730 of the ejector 700 is communicated with the liquid outlet end of the first control valve 500, when water flows from the intake end 710 of the ejector 700 to the outlet end 720 of the ejector 700, the siphon end 730 generates negative pressure to extract the cleaning liquid in the flushing waterway 300 into the ejector 700, the cleaning liquid is mixed with the water flow in the ejector 700 and flows out of the ejector 700 through the outlet end 720 to flow to the raw water inlet 210, and the arrangement of the ejector 700 enables the cleaning liquid to smoothly flow in the flushing waterway 300 without arranging a water pump, thereby simplifying the structure of the water purifier.

As shown in fig. 3, in the present embodiment, the liquid supply box 400 includes a box body 410, a liquid inlet 420 and a liquid outlet 430, a cavity 440 is disposed in the box body 410, a liquid inlet 411 is disposed at the top of the box body 410, a liquid outlet 412 is disposed at the bottom of the box body 410, the top and bottom of the cavity 440 are respectively communicated with the liquid inlet 411 and the liquid outlet 412, the liquid inlet 420 and the liquid outlet 430 are both disposed in the cavity 440 of the box body 410, the liquid outlet 430 is disposed below the liquid inlet 420 to divide the cavity 440 into three layers of cavities, namely, a liquid inlet 441 disposed above the liquid inlet 420, a liquid supply 442 disposed between the bottom of the liquid inlet 420 and the top of the liquid outlet 430, and a mixing 443 disposed below the liquid outlet 430, the liquid inlet 441 is communicated with the liquid outlet 412, a liquid inlet 421 is disposed on the liquid inlet 420, the liquid inlet 421 vertically penetrates the liquid inlet 420 to realize the communication of the liquid inlet 441 and the liquid supply 442, and a liquid outlet 431 is disposed on the liquid outlet 430 to realize the communication of the liquid outlet 431 and the liquid outlet 442. Acidic solids or liquid are placed in the liquid supply cavity 442, pure water enters the liquid supply cavity 441 through the liquid inlet 411, then enters the liquid supply cavity 442 through the liquid inlet 421 to dissolve the acidic solids in the liquid supply cavity 442 or mix with the acidic liquid in the liquid supply cavity 442 to form a cleaning liquid, and after the cleaning liquid enters the mixing cavity 443 through the liquid outlet 431 to be fully mixed, the cleaning liquid flows out of the liquid supply box 400 from the liquid outlet 412.

The top surface of the liquid outlet plate 430 is provided with an annular convex rib 432, the annular convex rib 432 extends from the liquid outlet plate 430 to the liquid supply cavity 442 above to form a liquid outlet channel 433 positioned in the annular convex rib 432, the top of the liquid outlet channel 433 is a liquid inlet end of the liquid outlet channel 433, the top of the annular convex rib 432 is lower than the top of the liquid supply cavity 442, so that the liquid inlet end of the liquid outlet channel 433 is communicated with the liquid supply cavity 442, the bottom of the liquid outlet channel 433 is a liquid outlet end of the liquid outlet channel 433, and the annular convex rib 432 is arranged around the liquid outlet hole 431, so that the liquid outlet end of the liquid outlet channel 433 is communicated with the liquid outlet hole 431. The acidic solid or liquid for generating the cleaning liquid is arranged in the liquid supply cavity 442, the height of the acidic solid or liquid is lower than the top height of the liquid outlet channel 433, when pure water continuously enters the liquid supply cavity 442, the cleaning liquid is continuously formed in the liquid supply cavity 442 outside the annular convex rib 432, and when the liquid level of the cleaning liquid rises to be higher than the top height of the annular convex rib 432, the cleaning liquid higher than the top of the annular convex rib 432 enters the liquid outlet channel 433 through the liquid inlet end at the top of the liquid outlet channel 433, so that the generation and the discharge of the cleaning liquid are realized. Through set up annular bead 432 in liquid feed chamber 442 for all pure water that gets into liquid feed chamber 442 all need be earlier with the acidic solid or the liquid contact back that is used for generating the washing liquid just can flow out outlet 431, make the mixture of washing liquid more even, avoid some pure water directly to flow out through liquid outlet channel 433, guarantee to flow out the washing liquid of liquid feed box 400 and have certain concentration, guarantee the washing effect of washing liquid to calcium magnesium ion etc. on reverse osmosis membrane promptly.

Preferably, the outer diameter of the annular rib 432 is gradually increased from top to bottom, so that the outer side wall of the annular rib 432 is obliquely arranged towards the obliquely upper direction, the annular rib 432 with the obliquely arranged outer side wall can drain pure water flowing into the liquid supply cavity 442, the pure water flows down from the liquid inlet 421, slides down in the liquid supply cavity 442 along the outer side wall of the annular rib 432, and forms vortex in the liquid supply cavity 442, so that the pure water can sufficiently dilute and mix liquid in the liquid supply cavity 442 to form cleaning liquid, and the phenomenon of uneven mixing is prevented.

In this embodiment, the liquid inlet ends of the liquid inlet holes 421 and the liquid outlet channels 433 are staggered, that is, the projection of the liquid inlet holes 421 on the horizontal plane and the projection of the liquid inlet ends of the liquid outlet channels 433 on the horizontal plane are not coincident completely, so that pure water flowing into the liquid supply cavities 442 from the liquid inlet holes 421 can avoid the liquid inlet ends of the liquid outlet channels 433, and the pure water flowing vertically from the liquid inlet holes 421 can be prevented from directly flowing into the liquid inlet channels to cause lower concentration of the cleaning liquid, so that all pure water flowing into the liquid supply cavities 442 from the liquid inlet holes 421 can form cleaning liquid with a certain concentration in the liquid supply cavities 442 and then can enter the liquid outlet channels 433.

In this embodiment, a floating ball 4411 is disposed in the liquid inlet cavity 441, the outer diameter of the floating ball 4411 is larger than the inner diameter of the liquid inlet 411, when the reverse osmosis filter element 200 is cleaned, the liquid level in the liquid inlet cavity is low, the liquid inlet 411 is not plugged by the floating ball 4411, and pure water smoothly enters the liquid inlet cavity 441 through the liquid inlet 411; when the reverse osmosis filter element 200 is not required to be cleaned, the first control valve 500 is closed, the water flow continuously entering the liquid supply box 400 sequentially fills the mixing cavity 443, the liquid supply cavity 442 and the liquid inlet cavity 441 until the cavity 440 is filled, when the liquid level in the liquid inlet cavity 441 rises, the floating ball 4411 floats upwards under the action of the buoyancy force, and when the cavity 440 is filled with the cleaning liquid, the floating ball 4411 just floats to the liquid inlet 411 of the sealing box body 410, so that a second control valve for sealing the liquid inlet 411 of the liquid supply box 400 is formed. Through set up floater 4411 in the feed liquor chamber 441 of feed liquor box 400 in order to form the second control valve for the second control valve sets up in the inside of feed liquor box 400, and simple structure is reliable, and is not fragile, reduction in production cost. Preferably, the top surface of the liquid inlet cavity 441 is obliquely arranged, the top surface of the liquid inlet cavity 441 gradually decreases from the liquid inlet 411 to the periphery, and when the floating ball 4411 floats along with the rising liquid level in the liquid inlet cavity 441, the top surface of the liquid inlet cavity 441 can guide the floating ball 4411 in the horizontal direction, so that the floating ball 4411 gradually moves towards the liquid inlet 411 until the floating ball 4411 is aligned with the liquid inlet 411 and closes the liquid inlet 411, and smooth closing of the floating ball 4411 to the liquid inlet 411 is ensured.

Embodiment two:

The difference between this embodiment and the first embodiment is that, as shown in fig. 4, in this embodiment, the second control valve 600 is an electromagnetic valve disposed outside the liquid supply box, the liquid inlet end of the second control valve 600 is communicated with the pure water outlet 220, and the liquid outlet end of the second control valve 600 is communicated with the liquid inlet of the liquid supply box 400, so that the response speed of the second control valve is fast and the control accuracy is high. When the reverse osmosis membrane of the reverse osmosis cartridge 200 is required to be flushed by the flushing waterway 300, the second control valve 600 is opened, and the pure water flowing out of the pure water outlet 220 enters the liquid supply box 400 through the second control valve 600 and then flows into the reverse osmosis cartridge 200 through the opened first control valve 500 and the raw water inlet 210 in sequence. When the water purifier works to produce purified water for drinking by a user, the second control valve 600 is closed to prevent the cleaning liquid in the liquid supply box 400 from flowing back to the purified water outlet 220 through the second control valve 600 to cause pollution of the purified water.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. The utility model provides a purifier, includes reverse osmosis filter core, reverse osmosis filter core has raw water inlet and pure water delivery port, its characterized in that: the device comprises a raw water inlet, a raw water outlet, a washing waterway, a first control valve, a second control valve and a control valve, wherein the raw water inlet is connected with the raw water outlet; the second control valve is used for controlling the on-off of the liquid inlet of the liquid supply box so as to prevent the cleaning liquid in the liquid supply box from flowing back.

2. A water purifier as recited in claim 1, wherein: the water purifier further comprises a raw water inlet waterway and an ejector, wherein the water inlet end of the ejector is communicated with the water outlet of the raw water inlet waterway, the siphon end of the ejector is communicated with the liquid outlet end of the first control valve, and the water outlet end of the ejector is communicated with the raw water inlet.

3. A water purifier as recited in claim 1, wherein: the liquid supply box is including the box body that is equipped with the cavity, be equipped with the feed liquor board in the box body and be located the drain board of feed liquor board below, with the cavity separate into with the feed liquor chamber of feed liquor mouth intercommunication at box body top, be located the feed liquor board with feed liquor chamber between the drain board and with the mixed chamber of the liquid outlet intercommunication of box body bottom, be equipped with on the feed liquor board and communicate the feed liquor chamber with the inlet of feed liquor chamber, be equipped with the intercommunication on the drain board the feed liquor chamber with the outlet of mixed chamber.

4. A water purifier as recited in claim 3, wherein: and a floating ball is arranged in the liquid inlet cavity, and when the cavity is filled with cleaning liquid, the floating ball is pushed to seal the liquid inlet of the box body so as to form the second control valve.

5. The water purifier of claim 4 wherein: the top surface height of the liquid inlet cavity is gradually reduced from the liquid inlet to the periphery, so that the top surface of the liquid inlet cavity is obliquely arranged.

6. A water purifier as recited in claim 3, wherein: the top of liquid outlet plate is equipped with the ring-shaped protruding muscle of encircleing the liquid outlet hole, the ring-shaped protruding muscle to supply the intracavity extension of liquid, in order to enclose into the intercommunication liquid supply the liquid chamber with the liquid outlet channel of liquid outlet hole.

7. The water purifier of claim 6 wherein: the outer diameter of the annular convex rib is gradually increased from top to bottom, so that the outer side wall of the annular convex rib is obliquely arranged.

8. The water purifier of claim 6 wherein: the liquid inlet holes are staggered with the liquid inlet ends of the liquid outlet channels so that the projections of the liquid inlet holes and the liquid inlet ends of the liquid outlet channels are not overlapped on a horizontal plane.

9. A water purifier as recited in claim 1, wherein: the second control valve is an electromagnetic valve and is connected between the liquid inlet of the liquid supply box and the pure water outlet.

10. A water purifier as recited in claim 1, wherein: the first control valve is an electromagnetic valve, the liquid inlet end of the first control valve is communicated with the liquid outlet of the liquid supply box, and the liquid outlet end of the first control valve is communicated with the raw water inlet.