CN215756572U - Faucet water softener and counter-flow control valve for faucet water softener - Google Patents

Abstract

The utility model provides a tap water softener and a counter-flow control valve for the same, the tap water softener comprises a softening filter element, a purifying filter element and a counter-flow control valve, wherein the softening filter element forms a first communicating opening and a second communicating opening, the purifying filter element forms a raw water gap and a purified water gap, the counter-flow control valve comprises a valve body and a valve core, wherein the valve body forms a valve cavity, a first opening, a second opening, a third opening, a soft water inlet, a soft water outlet, a raw water inlet and a water flow opening, the valve core is arranged in the valve cavity, the first opening of the valve body is suitable for being communicated with the first communicating opening of the softening filter element, the soft water inlet of the valve body is suitable for being communicated with the second communicating opening of the softening filter element, and the water flow opening is suitable for being communicated with the raw water gap of the purifying filter element, the raw water inlet of the valve body is suitable for being communicated with a raw water source, wherein the valve core can rotate around the central shaft of the valve core.

Description

Faucet water softener and counter-flow control valve for faucet water softener

Technical Field

The utility model relates to a water softening device, in particular to a faucet water softener, wherein the faucet water softener is provided with a softening filter element and a purifying filter element, and when the softening filter element of the faucet water softener is regenerated, the flow direction of water flow in the softening filter element is opposite to the flow direction of water flow in the softening filter element when the softening filter element is softened. Accordingly, the present invention further relates to a reverse flow control valve for a faucet water softener.

Background

With the increasing improvement of living standard and the increasing emphasis on health, the quality requirement of people on domestic water is higher and higher. However, in many countries, particularly in developing countries, many sources of tap water are relatively hard ground or surface waters that, after being purified and disinfected, are supplied to users for use. Tap water having a relatively high hardness tends to damage the protective layer of the skin, resulting in dry and astringent skin of the user and even skin allergy. In addition, tap water having a high hardness may also affect the cleansing effect of the skin cleansing article and the cosmetic effect of the cosmetics. Therefore, when the tap water having a high hardness is used to wash the face, the user experience is poor. While water having a lower hardness, such as softened water obtained by softening tap water, is milder to the skin of a user due to its low irritation, and is more suitable for use in cleansing the skin and making up and beautifying. For example, when cleaning the face.

However, the softening device, particularly a small softening device for makeup and/or cosmetology, has a limited content of softening resin, and loses its softening effect on raw water or water to be treated after a certain period of use, and thus can be used continuously after being subjected to a regeneration treatment. Some existing small-sized softening devices do not consider the regeneration problem at all, and users have to discard after losing the softening function after using for a period of time. The other part of the existing small softening device realizes the regeneration of the softening device by taking out the softening resin in the softening device and soaking the softening resin in salt solution. The method for realizing the regeneration of the softening device by taking out the softened resin in the softening device and soaking the softened resin in the salt solution needs to disassemble the softening device, and has higher difficulty. In addition, frequent disassembly of the softener also affects the sealing effectiveness and the service life of the softener.

The chinese utility model patent of application number 201620190999.5 discloses a filter core, filter element group spare and have the water treatment ware of washing one's face and rinsing one's mouth of filter element group spare, and wherein the softening filter core of the water treatment ware of washing one's face and rinsing one's mouth that has filter element group spare that this utility model patent discloses can carry out softening treatment to water. However, the utility model does not provide any mechanism for adding a regeneration solution, such as a salt solution, to its softening cartridge. In addition, the softening material of the washing water treater with filter element group spare that this utility model discloses is not separated and is placed, leads to raw water or pending water short and lead to this utility model patent discloses a washing water treater not good to the treatment effect of raw water in the route of flowing through of washing water treater.

SUMMERY OF THE UTILITY MODEL

The main advantage of the present invention is to provide a faucet water softener having a softening filter element and a purifying filter element for softening and purifying raw water (or tap water). Further, when the softening filter element of the faucet water softener is regenerated, the flow direction of the water flow in the softening filter element is opposite to the flow direction of the water flow in the softening filter element when the softening filter element is softened

Another advantage of the present invention is to provide a faucet water softener, wherein the faucet water softener is configured to automatically add a regeneration solution, such as a salt solution (a saline solution (a sodium chloride solution)), to the interior of a softening filter element of a water treatment device under the driving action of a water flow, so that the faucet water softener, and more particularly, the softening material of the softening filter element of the water treatment device, is regenerated to improve the service life of the softening filter element of the water treatment device of the faucet water softener. Further, the flow direction of the regeneration solution in the softening filter element of the water treatment device is opposite to the flow direction of the water flow of the softening filter element of the water treatment device during softening operation.

Another advantage of the present invention is to provide a faucet water softener in which a softening filter element of a water treatment device of the faucet water softener is configured to facilitate the addition of a regeneration solution and the regeneration of the softening filter element of the water treatment device of the faucet water softener.

Another advantage of the present invention is to provide a faucet water softener, wherein the faucet water softener is configured to allow a regeneration solution to automatically flow into a softening filter element of a water treatment device under the driving action of a water flow, so that the softened material of the faucet water softener is regenerated.

Another advantage of the present invention is to provide a faucet water softener, wherein the faucet water softener can directly provide raw water from a faucet to a user.

Other objects and features of the present invention will become more fully apparent from the following detailed description and appended claims, taken in conjunction with the accompanying drawings, wherein like reference numerals refer to like parts throughout.

In accordance with one aspect of the present invention, the foregoing and other objects and advantages are achieved in the faucet water softener, comprising:

a softening cartridge, wherein the softening cartridge defines a first communication opening and a second communication opening;

a purification cartridge, wherein the purification cartridge defines a raw water port and a clean water port; and

a reverse flow control valve, wherein the reverse flow control valve comprises a valve body and a valve core, wherein the valve body forms a valve cavity, a first opening, a second opening, a third opening, a soft water inlet, a soft water outlet, a raw water inlet and a water flow opening, wherein the valve core is arranged in the valve cavity, wherein the first opening of the valve body is suitable for being communicated with the first communication opening of the softening filter element, the soft water inlet of the valve body is suitable for being communicated with the second communication opening of the softening filter element, the water flow opening is suitable for being communicated with the raw water port of the purifying filter element, the raw water inlet of the valve body is suitable for being communicated with a raw water source, and the valve core is arranged to be capable of rotating around a central shaft thereof.

In accordance with another aspect of the present invention, there is further provided a reverse flow control valve for a faucet water softener, comprising:

a valve body; and

a valve core, wherein the valve body forms a valve cavity, a first opening, a second opening, a third opening, a soft water inlet, a soft water outlet, a raw water inlet and a water flow opening, wherein the valve core is arranged in the valve cavity, wherein the valve core is arranged to rotate around the central shaft thereof.

Further objects and advantages of the utility model will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the claims.

Drawings

FIG. 1 is a front view of a faucet water softener according to the above-described embodiment of the present invention.

FIG. 2A is a perspective view of the reverse flow control valve of the faucet water softener according to the embodiment of the present invention.

FIG. 2B is a sectional view of the reverse flow control valve of the faucet water softener according to the embodiment of the present invention.

FIG. 2C is an assembled view of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 3A is a perspective view of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 3B shows the valve body and the valve core of the reverse flow control valve of the faucet water softener according to the embodiment of the utility model.

FIG. 3C is a perspective view of the valve body of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 3D is another perspective view of the valve body of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 3E is another perspective view of the valve body of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 3F is another perspective view of the valve body of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 3G is another perspective view of the valve body of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 3H is another perspective view of the valve body of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 3I is another perspective view of the valve body of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 4A is a perspective view of a baffle of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 4B is another perspective view of the baffle of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 5A is a perspective view of the valve core of the reverse flow control valve of the faucet water softener according to the embodiment of the present invention.

FIG. 5B is a sectional view of the valve cartridge of the reverse flow control valve of the faucet water softener according to the embodiment of the present invention.

FIG. 5C is another sectional view of the valve cartridge of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 5D is another sectional view of the valve cartridge of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 5E is another perspective view of the valve core of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 6A is a sectional view of the valve body of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 6B is another sectional view of the valve body of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 6C is another sectional view of the valve body of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 6D is a side view of the valve body of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 7A is a sectional view of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 7B is another sectional view of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 7C is another sectional view of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 7D is another sectional view of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 7E is another sectional view of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 7F is another sectional view of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 7G is another sectional view of the reverse flow control valve of the faucet water softener according to the above-described embodiment of the present invention.

Fig. 8A is an (enlarged) assembly view of the ejector of the faucet water softener according to the embodiment of the present invention as described above.

Fig. 8B is an (enlarged) perspective view of the ejector of the faucet water softener according to the embodiment of the present invention.

Fig. 8C is an (enlarged) cross-sectional view of the ejector of the faucet water softener according to the embodiment of the present invention described above.

Fig. 8D is an (enlarged) perspective view of the rigid plate and the salt suction pipe of the jet body of the jet device of the faucet water softener according to the embodiment of the present invention as described above.

Fig. 8E is an (enlarged) cross-sectional view of the rigid plate and the salt suction pipe of the jet body of the jet device of the faucet water softener according to the embodiment of the present invention as described above, wherein the arrows in the drawing show the direction of water flow inside the jet device in the regeneration operation state.

FIG. 8F is an enlarged perspective view of the flexible plate of the ejector of the faucet water softener according to the embodiment of the present invention.

Fig. 8G is an (enlarged) plan view of the rigid plate of the ejector of the faucet water softener according to the embodiment of the present invention described above.

FIG. 9A is a sectional view of the brine tank of the faucet water softener according to the embodiment of the present invention.

FIG. 9B is a perspective view of the filter element of the faucet water softener according to the embodiment of the present invention.

FIG. 10 is a front view of a softening cartridge of the water treatment device of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 11A is a sectional view of the softening cartridge of the water treatment device of the faucet water softener according to the above-described embodiment of the present invention, wherein the view shows the direction of water flow from the first communication opening to the second communication opening in the softening operation state.

FIG. 11B is another cross-sectional view of the softening cartridge of the water treatment device of the faucet water softener according to the above-described embodiment of the present invention, wherein the view shows the direction of water flow from the second communication opening to the first communication opening in the regeneration operation state.

FIG. 12A is a sectional view of the outer and inner housings of the softening cartridge of the water treatment device of the faucet water softener according to the above-described embodiment of the present invention, wherein no softening material is added to the first and second softening chambers of the water treatment device shown in the figure.

FIG. 12B is another sectional view of the outer and inner housings of the softening cartridge of the water treatment device of the faucet water softener according to the above-described embodiment of the present invention, wherein no softening material is added to the first and second softening chambers of the water treatment device shown in the figure.

FIG. 13A is a perspective view of the inner housing of the softening cartridge of the water treatment device of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 13B is a sectional view of the inner housing of the softening cartridge of the water treatment device of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 14 is a perspective view of the base of the softening cartridge of the water treatment device of the faucet water softener according to the embodiment of the utility model.

FIG. 15A is a sectional view of the base of the softening cartridge of the water treatment device of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 15B is another cross-sectional view of the base of the softening cartridge of the water treatment device of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 16 is another perspective view of the outer housing and the inner housing of the softening cartridge of the water treatment device of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 17A is a perspective view of the purification cartridge of the water treatment apparatus of the faucet water softener according to the embodiment of the present invention.

FIG. 17B is an assembly view of the purification cartridge of the water treatment apparatus of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 17C is a sectional view of the purification cartridge of the water treatment apparatus of the faucet water softener according to the above-described embodiment of the present invention.

FIG. 17D is a perspective view of the base of the purification cartridge of the water treatment device of the faucet water softener according to the embodiment of the utility model.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1 to 17C of the drawings attached hereto, a faucet water softener according to an embodiment of the present invention is illustrated, wherein the faucet water softener comprises a water treatment device 1 and a first hose 31, wherein the water treatment device 1 comprises a softening filter element 20 and a purifying filter element 30, wherein one end of the first hose 31 is adapted to be in communication with a raw water source, such as a faucet, and the other end is adapted to be in communication with the softening filter element 20 of the water treatment device 1, such that raw water can flow from the water source to the softening filter element 20 of the water treatment device 1 under the action of water pressure, and softened by the softening filter element 20 of the water treatment device 1 to generate softened water. Most of the softened water produced by the existing water softeners is used for bathing, washing clothes and the like, has large volume, is installed and moved less, and the water softeners are generally communicated with a raw water source through hard pipes such as plastic hard pipes and stainless steel pipes. However, the softening cartridge 20 of the water treatment apparatus 1 of the faucet water softener of the present invention is connected to a source of raw water, particularly a faucet, through a hose, the first hose 31, to be more convenient for a user to use in a kitchen or a dressing table or a sink (of a dressing room or a restroom) having a limited area. Generally, the area of an operation table and a dressing room near a kitchen sink is limited, and the operation table and the dressing room are connected by using a hard pipe, so that the operation table occupies a larger volume, and the hard pipe cannot be moved, so that inconvenience is brought to the use of the faucet water softener. In particular, many faucets, such as kitchen faucets, have a rotatable spout for ease of use. If the hard pipe connection is used, the water outlet pipe of the tap water faucet cannot rotate. The softening filter element 20 of the water treatment device 1 of the faucet water softener of the utility model is connected with a raw water source, particularly a faucet, through a hose, the first hose 31, and the rotation of the tap (or a water outlet pipe thereof) of the tap water is not influenced. Furthermore, the use of hose connections also allows the user to connect the first hose 31 to the faucet and the softening cartridge 20 of the water treatment device 1 and to disconnect the first hose 31 from the faucet and the softening cartridge 20 of the water treatment device 1 without the aid of tools.

It is noted that the faucet water softener of the present invention is designed to be compact for use in kitchens or in dressing tables or hand washing tables (between dressing rooms) where the area is limited. If the total volume of the softening materials of the faucet water softener is too large, the whole water softener is too large and is inconvenient to use in a kitchen or a dressing table or a hand washing table (between a dressing room and a hand washing room) with limited area, and if the total volume of the softening materials is too small, the water softening capacity of the water softener is limited and the water softener loses the water softening capacity in a short time. Accordingly, the total volume of the softening material of the faucet water softener of the present invention is no greater than 2L. Preferably, the total volume of the softening material of the faucet water softener of the present invention is not more than 1L.

As shown in fig. 1 to 17C of the accompanying drawings, the inner diameter of the first hose 31 of the faucet water softener according to the embodiment of the present invention is set to not more than 8 mm. The faucet water softener is mainly designed for beauty treatment and the like, and the using amount of soft water is small. If the inner diameter of the first hose 31 is excessively large, the soft water produced by the faucet water softener of the present invention for a short time exceeds the actual demand of the user, and the excess soft water is wasted. In addition, the tap water softener of the present invention is designed to be miniaturized, the total volume of the softening material is preferably not more than 2L, the softening capability is limited, and if the inner diameter of the first hose 31 is too large, the softening capability of the tap water softener of the present invention is rapidly lost. More preferably, the inner diameter of the first hose 31 of the faucet water softener of the present invention is set to not more than 5 mm.

As shown in fig. 1 to 17C of the drawings, the faucet water softener according to the embodiment of the present invention further includes a second hose 32, wherein one end of the first hose 31 is disposed to be adapted to communicate with a tap water source, and the other end is disposed to communicate with the softening filter 20 of the water treatment device 1, so as to supply tap water to the softening filter 20 of the water treatment device 1, and one end of the second hose 32 communicates with the softening filter 20 of the water treatment device 1, so that softened water generated by the softening filter 20 of the water treatment device 1 is supplied through the second hose 32.

As shown in fig. 1 to 17C of the drawings, the softening cartridge 20 of the water treatment device 1 of the faucet water softener according to the embodiment of the present invention includes an outer housing 21, an inner housing 22 and a softening material 23, wherein the outer housing 21 forms a first receiving chamber 210, the inner housing 22 forms a second receiving chamber 220, wherein the inner housing 22 is disposed in the first receiving chamber 210 of the outer housing 21, and the outer housing 21 and the inner housing 22 form a first softening chamber 2101 therebetween, wherein the softening material 23 is disposed in the first softening chamber 2101, wherein the first softening chamber 2101 is in communication with the second receiving chamber 220 of the inner housing 22. Preferably, the softening material 23 is disposed in both the first softening chamber 2101 and the second receiving chamber 220. Further, the purification cartridge 30 has a raw water port 3101 and a purified water port 3102, wherein the raw water port 3101 allows raw water to flow into the purification cartridge 30 from it under the action of water pressure, and is purified by the purification cartridge 30 to process and generate purified water, and the purified water generated by the purification cartridge 30 flows out from the purified water port 3102 and is supplied under the action of water pressure.

As shown in fig. 1 to 17C of the drawings, the softening filter element 20 of the water treatment device 1 of the faucet water softener according to the embodiment of the present invention forms a first communication opening 301 and a second communication opening 302, wherein the first communication opening 301 is communicated with the first softening chamber 2101, and the second communication opening 302 is communicated with the second accommodating chamber 220 of the inner housing 22. Preferably, the softening cartridge 20 of the water treatment device 1 of the faucet water softener according to the embodiment of the present invention forms a communication passage 200, wherein the communication passage 200 communicates with the first softening chamber 2101 and the second receiving chamber 220, respectively, thereby communicating the first softening chamber 2101 and the second receiving chamber 220 with each other. More preferably, the first softening chamber 2101 and the second containing chamber 220 are communicated by and only by means of communication with the communication channel 200, respectively. Further, the communication passage 200 is provided away from the first communication opening 301 and the second communication opening 302, so that when the tap water is softened, as shown by the arrows in fig. 11A of the drawings, the water flows through the first communication opening 301, the first softening chamber 2101, the communication passage 200, the second accommodating chamber 220 and the second communication opening 302 in this order, or as shown by the arrows in fig. 11B of the drawings, the water flows through the second communication opening 302, the second accommodating chamber 220, the communication passage 200, the first softening chamber 2101 and the first communication opening 301 in this order. Accordingly, the first softening chamber 2101 and the second receiving chamber 220 are communicated only by the communication passage 200 far from the first and second communication openings 301 and 302, thereby lengthening a path through which tap water flows during the softening process, thereby enhancing the softening effect on the tap water. It can be understood that when tap water is supplied through the first communication opening 301, the first hose 31 is communicated with the first communication opening 301, and the second hose 32 is communicated with the second communication opening 302; when tap water is supplied through the second communication opening 302, the first hose 31 communicates with the second communication opening 302, and the second hose 32 communicates with the first communication opening 301.

As shown in fig. 12A to 16 of the drawings, the softening filter element 20 of the water treatment device 1 of the faucet water softener according to the embodiment of the present invention further includes a base 24, wherein the outer housing 21 and the inner housing 22 are both disposed at the base 24. Preferably, the first communication opening 301 and the second communication opening 302 are both provided at the base 24.

As shown in fig. 1 to 17C of the drawings, the base 24 of the softening filter element 20 of the water treatment device 1 of the faucet water softener according to the embodiment of the present invention forms a first diversion cavity 2401 and a second diversion cavity 2402, wherein the first diversion cavity 2401 of the base 24 is respectively communicated with the first softening cavity 2101 and the first communication opening 301 of the softening filter element 20 of the water treatment device 1, and the second diversion cavity 2402 is respectively communicated with the second communication opening 302 and the second accommodating chamber 220. Accordingly, when tap water is softened by the softening cartridge 20 of the water treatment device 1 of the faucet water softener of the present invention, the water flows through the first communication opening 301, the first diversion cavity 2401, the first softening cavity 2101, the communication channel 200, the second accommodating chamber 220, the second diversion cavity 2402 and the second communication opening 302 in order, or flows through the second communication opening 302, the second diversion cavity 2402, the second accommodating chamber 220, the communication channel 200, the first softening cavity 2101, the first diversion cavity 2401 and the first communication opening 301 in order.

As shown in fig. 1 to 17C of the drawings, the base 24 of the softening cartridge 20 of the water treatment device 1 of the faucet water softener according to the embodiment of the present invention includes a first guide portion 241, a second guide portion 242 and a base portion 243, wherein the first guide portion 241 and the second guide portion 242 extend from the base portion 243, respectively, wherein the first guide cavity 2401 is formed between the first guide portion 241 and the second guide portion 242, and the second guide portion 242 forms the second guide cavity 2402. Preferably, the first flow guiding part 241 and the second flow guiding part 242 are both annular.

As shown in fig. 11A of the drawings, when the softening filter element 20 of the water treatment device 1 of the faucet water softener according to the embodiment of the present invention softens tap water, the tap water flows through the first communication opening 301, the first guide chamber 2401 (if any), the first softening chamber 2101, the communication passage 200, the second accommodating chamber 220, the second guide chamber 2402 (if any) and the second communication opening 302 in sequence, so that the tap water is softened by the softening material 23 in the first softening chamber 2101 and the second accommodating chamber 220, and softened water flows out of and is supplied through the second communication opening 302. As shown in fig. 11B of the drawings, when the water treatment device 1 of the faucet water softener according to the embodiment of the present invention regenerates the softened material of the softening filter element 20, a regeneration solution flows in from the second communication opening 302 and then flows through the second guide chamber 2402 (if any), the second accommodating chamber 220, the communication channel 200, the first softening chamber 2101, the first guide chamber 2401 (if any) and the first communication opening 301 in sequence, and wastewater generated after regeneration flows out from the first communication opening 301.

As shown in fig. 1 to 17C of the drawings, the faucet water softener according to the embodiment of the present invention further includes a reverse flow control valve 10, wherein the reverse flow control valve 10 is configured to control the flow of water, such as to control the supply of raw water (or tap water) to the water treatment device 1, to control the supply of softened water generated by or treated by the softening filter element 20 of the water treatment device 1, and to control the purification filter element 30 of the water treatment device 1 to purify raw water. It can be understood that the reverse flow control valve 10 of the faucet water softener of the present invention is in communication with a tap water source, such as a faucet, and one end of the first hose 31 is disposed at the reverse flow control valve 10, and the other end is disposed in communication with the softening filter element 20 of the water treatment device 1. In other words, the reverse flow control valve 10 controls raw water (or tap water) to be supplied to the softening filter element 20 of the water treatment apparatus 1 through the first hose 31. Further, the reverse flow control valve 10 also controls raw water (or tap water) to be supplied to the purification cartridge 30 of the water treatment apparatus 1. As shown in fig. 11B of the drawings, when the softening filter element 20 of the water treatment device 1 of the faucet water softener according to the embodiment of the present invention is regenerated, a regeneration solution, such as a saline solution (a sodium chloride solution), flows to the second communication opening 302 of the softening filter element 20 of the water treatment device 1 of the faucet water softener under the control of the reverse flow control valve 10, and flows through the second guide chamber 2402, the second accommodating chamber 220, the communication passage 200, the first softening chamber 2101, the first guide chamber 2401 and the first communication opening 301 in sequence, and regenerates the softening material 23 of the faucet water softener in the process. The waste liquid generated during the regeneration of the softening material 23 of the faucet water softener of the present invention is discharged from the first communication opening 301.

As shown in fig. 1, 17A to 17C of the drawings, the purification cartridge 30 of the water treatment device 1 of the faucet water softener according to the embodiment of the present invention includes a filter part 311 and a base 312, wherein the filter part 311 is disposed on the base 312 of the purification cartridge 30. Preferably, the raw water port 3101 is formed in the filter 311, and the purified water port 3102 is formed in the base 312. Alternatively, the raw water port 3101 and the purified water port 3102 are formed in the base 312. As shown in fig. 1 and 17A to 17C of the drawings, the filter portion 311 of the purification cartridge 30 of the water treatment device 1 of the faucet water softener according to the embodiment of the present invention includes a cartridge housing 3111 and a purification filter 3112 disposed in the cartridge housing 3111. Illustratively, the purifying filter 3112 of the purifying filter 30 of the water treatment apparatus 1 of the faucet water softener of the embodiment of the present invention is made of ceramic. It is understood that the purification filter 3112 of the purification cartridge 30 can also be made of other purification materials, such as carbon fiber, PP cotton, activated carbon particles, or ultrafiltration, or a composite material formed of multiple materials, such as any two or more of ceramic, carbon fiber, PP cotton, activated carbon particles, and ultrafiltration.

As shown in fig. 2A to 7G of the drawings, the reverse flow control valve 10 of the faucet water softener according to the embodiment of the utility model includes a valve body 11 and a valve core 12, wherein the valve body 11 forms a valve chamber 110, a first opening 1101, a second opening 1102, a third opening 1103, a raw water inlet 1104, a soft water inlet 1107, a soft water outlet 1108 and a water flow opening 1115, wherein the valve core 12 is rotatably disposed in the valve chamber 110, wherein the first opening 1101 of the valve body 11 is adapted to communicate with the first communication opening 301 of the softening filter element 20 of the water treatment device 1, the soft water inlet 1107 of the valve body 11 is adapted to communicate with the second communication opening 302 of the softening filter element 20 of the water treatment device 1, the inlet 1104 of the valve body 11 is adapted to communicate with a raw water source (e.g., a tap water outlet), the water flow opening 1115 of the valve body 11 is adapted to communicate with the raw water port 3101 of the purification cartridge 30. Further, the first hose 31 communicates with the first opening 1101 of the valve body 11 and the first communication opening 301 of the softening filter element 20 of the water treatment device 1, respectively; the second hose 32 is respectively communicated with the soft water inlet 1107 of the valve body 11 and the second communication opening 302 of the softening filter element 20 of the water treatment device 1. In other words, one end of the first hose 31 communicates with the first opening 1101 of the valve body 11, and the other end communicates with the first communication opening 301 of the softening cartridge 20 of the water treatment apparatus 1; one end of the second hose 32 is communicated with the soft water inlet 1107 of the valve body 11, and the other end is communicated with the second communication opening 302 of the softening filter element 20 of the water treatment device 1. As shown in fig. 5E of the drawings, the spool 12 is preferably cylindrical, and the spool 12 is arranged to be rotatable about its central axis a. As shown in fig. 2A to 7G of the drawings, preferably, the first opening 1101, the second opening 1102, the third opening 1103, the raw water inlet 1104, the soft water inlet 1107, the soft water outlet 1108 and the water flow opening 1115 of the valve body 11 of the backflow control valve 10 of the faucet water softener according to the embodiment of the present invention are formed at the valve body 11 with a space therebetween. Preferably, the soft water inlet 1107 and the third opening 1103 of the valve body 11 are adjacent, and the soft water inlet 1107 and the soft water outlet 1108 of the valve body 11 are adjacent. As shown in fig. 2A to 7G of the drawings, preferably, the valve body 11 of the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention further forms a sewage opening 1106, wherein the sewage opening 1106 is adjacent to the first opening 1101. As shown in fig. 2A to 7G of the drawings, more preferably, the valve body 11 of the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention further forms a raw water outlet 1109. As shown in fig. 2A to 7G of the drawings, preferably, the first opening 1101, the second opening 1102, the third opening 1103, the raw water inlet 1104, the water flow opening 1115, the sewage opening 1106, the soft water inlet 1107, the soft water outlet 1108 and the raw water outlet 1109 of the valve body 11 of the backflow control valve 10 of the faucet water softener according to the embodiment of the present invention are formed at the valve body 11 in a spaced manner.

As shown in fig. 8A to 8G of the drawings, the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention further has an ejector 18, wherein the ejector 18 has an outlet 182 adapted to communicate with the second opening 1102 of the valve body 11, an inlet 183 adapted to communicate with the third opening 1103 of the valve body 11, and a salt absorption port 181 respectively communicating with the outlet 182 and the inlet 183, and when a water flow, such as a tap water flow, flows from the outlet 182 of the ejector 18 to the inlet 183 of the ejector 18, a negative pressure occurs in the salt absorption port 181 of the ejector 18, so that a regeneration solution can flow from the salt absorption port 181 of the ejector 18 to the inlet 183 of the ejector 18. Accordingly, the salt absorption port 181 of the ejector 18 communicates with the ejection port 182 and the ejection port 183 of the ejector 18, respectively.

As shown in fig. 8A to 8G of the drawings, the ejector 18 of the faucet water softener according to the embodiment of the present invention includes a jet body 180, wherein the jet body 180 forms a nozzle 1804, a suction chamber 1805 and a mixing chamber 1806, the nozzle 1804 communicates with the ejection outlet 182, the suction chamber 1805 communicates with the salt suction port 181, the mixing chamber 1806 communicates with the ejection port 183, and the nozzle 1804, the suction chamber 1805 and the mixing chamber 1806 form a three-way communication structure. Further, the ejection outlet 182 and the ejection inlet 183 are formed on the surface of the jet body 180, and the nozzle 1804, the suction chamber 1805 and the liquid mixing chamber 1806 are formed inside the jet body 180. Preferably, the jet body 180 is plate-shaped. The plate-shaped jet body 180 is effective to reduce the diameter of the reverse flow control valve 10, thereby making the reverse flow control valve 10 more convenient to install in a faucet.

As shown in fig. 8A to 8G of the drawings, the jet body 180 of the jet device 18 of the faucet water softener according to the embodiment of the present invention includes a flexible plate 1801, a rigid plate 1802, a first forming portion 1807 and a second forming portion 1808, wherein the first forming portion 1807 and the second forming portion 1808 are both disposed between the flexible plate 1801 and the rigid plate 1802, wherein the flexible plate 1801, the first forming portion 1807, the second forming portion 1808 and the rigid plate 1802 form the suction chamber 1805 and the liquid mixing chamber 1806, and the flexible plate 1801, the first forming portion 1807 and the rigid plate 1802 form the nozzle 1804. It will be appreciated that the flexible plate 1801 is made of a flexible material, such as rubber, and the rigid plate 1802 is made of a rigid material, such as a rigid plastic. Preferably, the first formation 1807 and the second formation 1808 are integrally formed with the rigid plate 1802. The first formation 1807 and the second formation 1808 are also made of a rigid material, such as a rigid plastic. Optionally, the first forming portion 1807 and the second forming portion 1808 are integrally formed with the flexible board 1801. The first formation 1807 and the second formation 1808 are also made of a flexible material, such as rubber. Accordingly, when the flexible board 1801 is pressed against the first forming portion 1807 and the second forming portion 1808, a seal can be achieved between the flexible board 1801 and the first forming portion 1807 and the second forming portion 1808.

As shown in fig. 8A to 8G of the drawings, the ejector 18 of the faucet water softener according to the embodiment of the present invention further includes a salt suction pipe 184, wherein one end of the salt suction pipe 184 communicates with the salt suction port 181, so that salt liquid can be supplied through the salt suction pipe 184.

As shown in fig. 9A to 9B of the drawings, the faucet water softener according to the embodiment of the present invention further has a salt hose 33, wherein one end of the salt hose 33 (e.g., through the salt suction pipe 184) is in communication with the salt suction port 181 of the ejector 18, and the other end is configured and adapted to be in communication with a container for containing salt, e.g., a salt tank 34, so that the salt can flow to the salt suction port 181 of the ejector 18 through the salt hose 33. That is, one end of the salt absorption pipe 184 of the ejector 18 is communicated with the salt absorption port 181, and the other end of the salt absorption pipe 184 is communicated with the salt liquid hose 33. One end of the salt liquid hose 33 is connected to the salt absorption port 181 of the ejector 18 through the salt absorption pipe 184, and the other end of the salt liquid hose 33 is connected to a container for containing salt liquid, so that a user can communicate the salt liquid hose 33 with the salt absorption port 181 of the ejector 18 and detach the salt liquid hose 33 from the ejector 18 without using tools. In other words, the salt liquid hose 33 allows the faucet water softener of the present invention to communicate the salt liquid hose 33 with the salt suction port 181 of the ejector 18 only when the faucet water softener is regenerated, and to remove the salt liquid hose 33 from the ejector 18 when the faucet water softener of the present invention is regenerated or not, thereby allowing the faucet water softener of the present invention to occupy less space when it is softening raw water.

As shown in fig. 9A to 9B of the drawings, the faucet water softener according to the embodiment of the present invention further has a filter element 35, wherein the filter element 35 is disposed at the salt hose 33 to filter the salt. Preferably, the filter element 35 is arranged at the end of the salt liquid hose 33 communicating with the salt liquid tank 34. Optionally, the filter element 35 is disposed at one end of the salt liquid hose 33 communicating with the salt suction port 181 of the ejector 18. It is understood that the filter element 35 may be a screen or other filter member capable of filtering salt particles.

As shown in fig. 8A of the drawings, the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention further has a sealing member 19, wherein the sealing member 19 is adapted to detachably seal the salt suction port 181 of the ejector 18, so as to seal the salt suction port 181 of the ejector 18 and prevent the salt suction port 181 of the ejector 18 from being contaminated when the faucet water softener of the present invention is in a non-regeneration state. Preferably, the sealing element 19 is provided at the ejector 18 so as to seal the salt-sucking port 181 of the ejector 18. More preferably, the sealing element 19 is arranged at the salt suction pipe 184 of the ejector 18. It will be appreciated that the sealing element 19 may be a sealing cap or a sealing plug.

As shown in fig. 5A to 5E of the drawings, the valve core 12 of the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention forms a communication chamber 120, a first passage 101, a second passage 102 and a third passage 103, wherein the communication chamber 120 is respectively communicated with the raw water inlet 1104 and the first passage 101 of the valve body 11. Further, the second channel 102 is not communicated with the conducting cavity 120, the first channel 101 and the third channel 103, and the third channel 103 is not communicated with the conducting cavity 120 and the first channel 101. As shown in fig. 2A to 7G of the drawings, the through cavity 120 of the valve core 12 of the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention forms a cavity main body 1201, an annular groove 1202 and at least one through hole 1203, wherein the annular groove 1202 communicates with the raw water inlet 1104, the through hole 1203 communicates with the cavity main body 1201 and the annular groove 1202 respectively, and the cavity main body 1201 of the through cavity 120 communicates with the first passage 101 and the through hole 1203 respectively. Accordingly, the annular groove 1202 is provided at an outer side wall of the valve spool 12 to maintain communication between the annular groove 1202 and the raw water inlet 1104. Therefore, the chamber body 1201 of the conduction chamber 120 communicates with the raw water inlet 1104 through the conduction through hole 1203 and the annular groove 1202. It will be understood by those skilled in the art that the communication chamber 120 may be maintained in communication with the raw water inlet 1104 by other means, particularly in communication with the raw water inlet 1104 when the reverse flow control valve 10 is in the corresponding operating position.

As shown in fig. 1 to 7G of the drawings, the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention has a softening operating position, wherein when the reverse flow control valve 10 is in the softening operating position, the first passage 101 of the valve core 12 is communicated with the first opening 1101 of the valve body 11, and the second passage 102 of the valve core 12 is communicated with the soft water inlet 1107 and the soft water outlet 1108 of the valve body 11, respectively. Accordingly, when the reverse flow control valve 10 is at the softening operating position, raw water or tap water flows in from the raw water inlet 1104 of the valve body 11 of the reverse flow control valve 10 under the action of water pressure, flows to the first opening 1101 of the valve body 11 through the first passage 101 and further flows into the first communication opening 301 of the softening filter element 20 of the water treatment device 1, and after the raw water flowing into the softening filter element 20 of the water treatment device 1 is softened by the softening filter element 20 of the water treatment device 1, the generated softened water flows out from the second communication opening 302 of the softening filter element 20 of the water treatment device 1. Further, the softened water generated by the softening filter element 20 of the water treatment device 1 flows out from the second communication opening 302 under the action of the water pressure, and then flows through the soft water inlet 1107, the second passage 102 and the soft water outlet 1108 in sequence, so that the generated softened water can be provided through the soft water outlet 1108. In other words, when the reverse flow control valve 10 is in the softening operation position, the valve spool 12 of the reverse flow control valve 10 forms a first communication passage 1001 communicating with the first opening 1101 and the raw water inlet 1104 of the valve body 11, respectively, and a second communication passage 1002 communicating with the soft water inlet 1107 and the soft water outlet 1108 of the valve body 11, respectively. More specifically, when the reverse flow control valve 10 is in the softening operation position, the communication chamber 120 and the first passage 101 form the first communication passage 1001 communicating with the first opening 1101 and the raw water inlet 1104 of the valve body 11, respectively, and the second passage 102 forms the second communication passage 1002 communicating with the soft water inlet 1107 and the soft water outlet 1108 of the valve body 11, respectively. Preferably, when the reverse flow control valve 10 is controlled to be in the softening operation position, the second opening 1102, the third opening 1103, the blowdown opening 1106, the raw water outlet 1109 and the water flow opening 1115 of the valve body 11 of the faucet water softener of the present invention are respectively blocked by the valve core 12. It can be understood that, when the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention is controlled to the softening operation position, the faucet water softener of the present invention is controlled to its softening operation state. At this time, the valve core 12 of the reverse flow control valve 10 is rotated until the first passage 101 communicates with the first opening 1101 of the valve body 11, and the second passage 102 communicates with the soft water inlet 1107 and the soft water outlet 1108 of the valve body 11, respectively. Accordingly, when the reverse flow control valve 10 is in the softening operation position, the raw water inlet 1104, the conducting chamber 120, the first passage 101 and the first opening 1101 form a raw water path so that raw water can be supplied to the softening filter element 20 of the water treatment device 1 under the action of water pressure, and the soft water inlet 1107, the second passage 102 and the soft water outlet 1108 form a soft water path so that soft water generated by softening raw water by the softening filter element 20 of the water treatment device 1 can flow out and be supplied through the soft water outlet 1108 under the action of water pressure.

As shown in fig. 1 to 7G of the drawings, the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention further has a regeneration operation position, wherein when the reverse flow control valve 10 is in the regeneration operation position, the first channel 101 of the valve core 12 communicates with the second opening 1102 of the valve body 11, the second channel 102 of the valve core 12 communicates with the first opening 1101 and the drain opening 1106 of the valve body 11, respectively, and the third channel 103 of the valve core 12 communicates with the soft water inlet 1107 and the third opening 1103 of the valve body 11, respectively. Correspondingly, when the reverse flow control valve 10 is at the regeneration working position, raw water or tap water flows in from the raw water inlet 1104 of the valve body 11 of the reverse flow control valve 10 under the action of water pressure, flows to the second opening 1102 of the valve body 11 through the first passage 101, flows into the ejection port 182 of the ejector 18, is ejected through the ejector 18, mixes salt solution (such as sodium chloride solution) from the salt absorption port 181 to form a regeneration solution, flows into the third opening 1103 of the valve body 11 through the ejection port 183 of the ejector 18, then flows to the second communication opening 302 of the softened filter element 20 of the water treatment device 1 through the third passage 103 and the soft water inlet 1107, flows into the softened filter element 20 of the water treatment device 1 under the action of water pressure, and regenerates the softened material 23 of the softened filter element 20 of the water treatment device 1, the generated wastewater (or sewage) flows out from the first communication opening 301 of the softening filter element 20 of the water treatment device 1, and flows through the first opening 1101, the second channel 102 to the sewage discharge opening 1106 in sequence, so that the regenerated wastewater can be discharged through the sewage discharge opening 1106. In other words, when the reverse flow control valve 10 is in the regeneration operation position, the valve spool 12 of the reverse flow control valve 10 forms a third communication passage 1003 communicating with the second opening 1102 and the raw water inlet 1104 of the valve body 11, respectively, a fourth communication passage 1004 communicating with the soft water inlet 1107 and the third opening 1103 of the valve body 11, respectively, and a fifth communication passage 1005 communicating with the first opening 1101 and the drain opening 1106 of the valve body 11, respectively. More specifically, when the reverse flow control valve 10 is in the regeneration position, the communicating chamber 120 and the first passage 101 form the third communicating passage 1003 respectively communicating with the second opening 1102 and the raw water inlet 1104 of the valve body 11, the third passage 103 forms the fourth communicating passage 1004 respectively communicating with the soft water inlet 1107 and the third opening 1103 of the valve body 11, and the second passage 102 forms the fifth communicating passage 1005 respectively communicating with the first opening 1101 and the drain opening 1106 of the valve body 11. Preferably, when the reverse flow control valve 10 is controlled to be in the regeneration operation position, the soft water outlet 1108, the raw water outlet 1109 and the water flow opening 1115 of the valve body 11 of the faucet water softener of the present invention are respectively blocked by the valve core 12. It can be understood that, when the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention is controlled to the regeneration operation position, the faucet water softener of the present invention is controlled to its regeneration operation state. At this time, the valve core 12 of the reverse flow control valve 10 is rotated until the first passage 101 communicates with the second opening 1102 of the valve body 11, the second passage 102 communicates with the first opening 1101 and the drain opening 1106 of the valve body 11, respectively, and the third passage 103 communicates with the third opening 1103 and the soft water inlet 1107 of the valve body 11, respectively. It should be noted that, when the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention is controlled to be in the regeneration operation position, the flow direction of the regeneration solution in the softening filter element 20 of the water treatment device 1 is opposite to (or the flow direction of) the water flow direction of the softening filter element 20 of the water treatment device 1 in the softening operation position, so that the regeneration solution can more effectively regenerate the water treatment material of the softening filter element 20 of the water treatment device 1. Accordingly, the control valve 10 of the faucet water softener of the present invention is a reverse flow control valve (or a reverse flow regeneration control valve).

As shown in fig. 1 to 7G of the drawings, the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention further has a raw water supply operation position, wherein when the reverse flow control valve 10 is in the raw water supply operation position, the first passage 101 of the valve element 12 communicates with the raw water outlet 1109 of the valve body 11. Accordingly, when the reverse flow control valve 10 is at the raw water supply operation position, raw water or tap water flows from the raw water inlet 1104 of the valve body 11 of the reverse flow control valve 10 to the raw water outlet 1109 of the valve body 11 through the first passage 101 under the hydraulic pressure, so that raw water is supplied through the raw water outlet 1109. In other words, when the reverse flow control valve 10 is at the raw water supply operation position, the valve spool 12 of the reverse flow control valve 10 forms a sixth communication passage 1006 which communicates with the raw water outlet 1109 and the raw water inlet 1104 of the valve body 11, respectively. More specifically, when the reverse flow control valve 10 is at the raw water supply operation position, the communication chamber 120 and the first passage 101 form the sixth communication passage 1006 which communicates with the raw water outlet 1109 and the raw water inlet 1104 of the valve body 11, respectively. Preferably, when the reverse flow control valve 10 is controlled to be in the raw water supply operation position, the soft water inlet 1107, the soft water outlet 1108, the sewage opening 1106, the third opening 1103 and the water flow opening 1115 of the valve body 11 of the faucet water softener of the present invention are respectively blocked by the valve core 12. It can be understood that, when the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention is controlled to the raw water supply operation position, the faucet water softener of the present invention is controlled to its raw water supply operation state. At this time, the spool 12 of the reverse flow control valve 10 is rotated until the first passage 101 communicates with the raw water outlet 1109 of the valve body 11. Accordingly, when the reverse flow control valve 10 is at the raw water supply operation position, the raw water inlet 1104, the communication chamber 120, the first passage 101, and the raw water outlet 1109 form a raw water supply path so that raw water can be discharged and supplied through the raw water outlet 1109 by water pressure.

As shown in fig. 1 to 7G of the drawings, the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention further has a water supply operation position, wherein the first passage 101 of the valve core 12 communicates with the water flow opening 1115 of the valve body 11 when the reverse flow control valve 10 is in the water supply operation position. Accordingly, when the reverse flow control valve 10 is at the water supply position, raw water or tap water flows in from the raw water inlet 1104 of the valve body 11 of the reverse flow control valve 10 under the action of water pressure, flows to the water flow opening 1115 of the valve body 11 through the first passage 101, so that the raw water flows into the purification cartridge 30 of the water treatment device 1 through the water flow opening 1115, and further flows into the purification cartridge 30 of the water treatment device 1 from the raw water port 3101 of the purification cartridge 30 of the water treatment device 1, and after being purified by the purification cartridge 30 of the water treatment device 1, the generated purified water flows out from the purified water port 3102 of the purification cartridge 30 of the water treatment device 1. In other words, when the reverse flow control valve 10 is in the water supply operation position, the valve body 12 of the reverse flow control valve 10 forms a water supply communication passage 1007 communicating with the water flow opening 1115 and the raw water inlet 1104 of the valve body 11, respectively. More specifically, when the reverse flow control valve 10 is in the water supply operation position, the communication chamber 120 and the first passage 101 form the water supply communication passage 1007 communicating with the water flow opening 1115 and the raw water inlet 1104 of the valve body 11, respectively. Preferably, when the reverse flow control valve 10 is controlled to be in the water supply operation position, the soft water inlet 1107, the soft water outlet 1108, the blowdown opening 1106, the first opening 1101 and the third opening 1103 of the valve body 11 of the faucet water softener of the present invention are respectively blocked by the valve core 12. It can be understood that the faucet water softener according to the present invention is controlled to be in its water supply operation state when the reverse flow control valve 10 of the faucet water softener according to the present embodiment is controlled to be in the water supply operation position. At this time, the spool 12 of the reverse flow control valve 10 is rotated until the first passage 101 communicates with the water flow opening 1115 of the valve body 11. Accordingly, when the reverse flow control valve 10 is at the water supply position, the raw water inlet 1104, the communication chamber 120, the first passage 101 and the water flow opening 1115 form a purified water supply path, so that raw water can be discharged through the water flow opening 1115 and supplied to the purification cartridge 30 of the water treatment apparatus 1 under the hydraulic pressure.

As shown in fig. 5A to 5E of the drawings, the first passage 101 of the valve core 12 of the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention is a passage or through hole which is disposed inside the valve core 12 and has two passage openings, one passage opening of the first passage 101 is disposed to communicate with the communication chamber 120, and the other passage opening faces the inner wall of the valve body 11. The first channel 101 of the valve core 12 of the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention may also be an open groove, and the openings thereof are disposed toward the inner walls of the communication chamber 120 and the valve body 11, respectively. As shown in fig. 5A to 5E of the drawings, the second channel 102 and the third channel 103 of the valve core 12 of the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention may be an open groove that opens toward the inner wall of the valve body 11. The second channel 102 and the third channel 103 of the valve core 12 of the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention may also be a channel or through hole disposed inside the valve core 12, having two channel openings disposed on the outer surface of the valve core 12.

As shown in fig. 1 to 7G of the drawings, the first opening 1101, the second opening 1102, the third opening 1103, the raw water inlet 1104, the water flow opening 1115, the soft water inlet 1107, the soft water outlet 1108, the raw water outlet 1109 and the sewage opening 1106 of the valve body 11 of the backflow control valve 10 of the faucet water softener according to the embodiment of the utility model are respectively disposed at suitable positions of the valve body 11, so that when the backflow control valve 10 is in the softening working position, the valve core 12 can be rotated to the first passage 101 communicating with the first opening 1101, and the second passage 102 communicates with the soft water inlet 1107 and the soft water outlet 1108 of the valve body 11; when the reverse flow control valve 10 is in the regeneration position, the valve core 12 can be rotated to the first channel 101 to communicate with the second opening 1102, the second channel 102 communicates with the first opening 1101 and the drain opening 1106 of the valve body 11, respectively, and the third channel 103 communicates with the soft water inlet 1107 and the third opening 1103 of the valve body 11, respectively; when the reverse flow control valve 10 is at the raw water supply working position, the valve core 12 can be rotated to communicate the first channel 101 with the raw water outlet 1109; when the reverse flow control valve 10 is in the water supply position, the valve core 12 can be rotated to connect the first passage 101 with the water flow opening 1115.

As shown in fig. 1 to 7G of the drawings, the soft water inlet 1107, the first opening 1101, the second opening 1102, the raw water outlet 1109, the water flow opening 1115, the soft water outlet 1108, the sewage discharge opening 1106 and the third opening 1103 of the backflow control valve 10 of the faucet water softener according to the embodiment of the present invention are separately disposed on the inner wall of the valve body 11, and the soft water inlet 1107, the first opening 1101, the second opening 1102, the raw water outlet 1109 and the water flow opening 1115 are located at the same height position of the inner wall of the valve body 11, the soft water outlet 1108 and the sewage discharge opening 1106 are located at the same other height position of the inner wall of the valve body 11, and the third opening 1103 is located at the same other height position of the inner wall of the valve body 11. As shown in fig. 1 to 7G of the drawings, the first, second and third passages 101, 102 and 103 of the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention are located at different height positions of the valve core 12.

As shown in fig. 1 to 7G of the drawings, the reverse flow control valve 10 of the faucet water softener according to the embodiment of the utility model further includes a set of sealing members 131, the valve body 11 has a set of sealing grooves 1010, wherein the sealing grooves 1010 are all disposed on the inner wall of the valve body 11 and respectively surround the first opening 1101, the second opening 1102, the third opening 1103, the soft water inlet 1107, the soft water outlet 1108, the raw water outlet 1109, the water flow opening 1115 and the sewage discharge opening 1106 of the valve body 11, and the sealing members 131 are disposed and adapted to engage in the sealing grooves 1010 to achieve sealing between the valve core 12 and the inner wall of the valve body 11.

As shown in fig. 1 to 7G of the drawings, the valve body 11 of the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention further forms a first through hole 111, a second through hole 112, a third through hole 113, a water inlet through hole 114, a water flow opening through hole 115, a sewage through hole 116, a soft water inlet through hole 117, a soft water outlet through hole 118, and a raw water outlet through hole 119, wherein the first through hole 111 is adapted to communicate with the first opening 1101 and the first communication opening 301, respectively, the second through hole 112 is adapted to communicate with the second opening 1102 and the outlet 182 of the ejector 18, respectively, the third through hole 113 is adapted to communicate with the third opening 1103 and the injection opening 183 of the ejector 18, respectively, the water inlet through hole 114 is adapted to communicate with the raw water inlet 1104 and a raw water source, respectively, the water flow opening through hole 115 is adapted to communicate with the water flow opening 1115 and the raw water outlet 3101 of the purification cartridge 30, the blowdown through hole 116 communicates with the blowdown opening 1106, the soft water inlet through hole 117 is adapted to communicate with the soft water inlet 1107 and the second communication opening 302, respectively, the soft water outlet through hole 118 communicates with the soft water outlet 1108, and the raw water outlet through hole 119 communicates with the raw water outlet 1109. In other words, the first opening 1101 of the valve body 11 communicates with the first communication opening 301 through the first through-hole 111, the second opening 1102 of the valve body 11 communicates with the injection hole 182 of the injector 18 through the second through-hole 112, the third opening 1103 of the valve body 11 communicates with the injection port 183 of the injector 18 through the third through hole 113, the raw water inlet 1104 of the valve body 11 is communicated with a raw water source through the water inlet through hole 114, the water flow opening 1115 of the valve body 11 is communicated with the raw water port 3101 of the purification cartridge 30 through the water flow opening through hole 115, the blowdown opening 1106 of the valve body 11 blowdown through the blowdown through hole 116, the soft water inlet 1107 of the valve body 11 communicates with the second communication opening 302 through the soft water inlet through hole 117, the soft water outlet 1108 of the valve body 11 supplies the soft water through the soft water outlet through-hole 118, the raw water outlet 1109 of the valve body 11 supplies raw water through the raw water outlet through hole 119. Preferably, the first opening 1101, the second opening 1102, the third opening 1103, the raw water inlet 1104, the water flow opening 1115, the sewage opening 1106, the soft water inlet 1107, the soft water outlet 1108 and the raw water outlet 1109 are all disposed on the inner wall of the valve body 11 of the reverse flow control valve 10. More preferably, the first opening 1101 can be regarded as a through hole opening of the first through hole 111, the second opening 1102 can be regarded as a through hole opening of the second through hole 112, the third opening 1103 can be regarded as a through hole opening of the third through hole 113, the raw water inlet 1104 can be regarded as a through hole opening of the water inlet through hole 114, the water flow opening 1115 can be regarded as a through hole opening of the water flow opening through hole 115, the sewage discharge opening 1106 can be regarded as a through hole opening of the sewage discharge through hole 116, the soft water inlet 1107 can be regarded as a through hole opening of the soft water inlet through hole 117, the soft water outlet 1108 can be regarded as a through hole opening of the soft water outlet through hole 118, and the raw water outlet 1109 can be regarded as a through hole opening of the raw water outlet through hole 119. Most preferably, the first opening 1101 and the waste opening 1106 are adjacent; the soft water inlet 1107 is adjacent to the soft water outlet 1108 and the third opening 1103, respectively.

As shown in fig. 1 to 7G of the drawings, the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention further includes a first communication pipe 141 and a second communication pipe 142, wherein the first conducting pipe 141 forms a first conducting opening 1401, the second conducting pipe 142 forms a second conducting opening 1402, wherein the first communicating pipe 141 communicates with the first opening 1101 (or the first through hole 111) and the first communicating opening 1401 respectively, the second through pipe 142 communicates with the soft water inlet 1107 (or the soft water inlet through hole 117) and the second through opening 1402 respectively, the first communication opening 1401 is adapted to communicate with the first communication opening 301 of the softening cartridge 20 of the water treatment device 1, the second communication opening 1402 is adapted to communicate with the second communication opening 302 of the softening cartridge 20 of the water treatment apparatus 1. In other words, the first and second communication openings 1401 and 1402 facilitate the installation and connection of the softening filter element 20 of the water treatment device 1 of the faucet water softener to the reverse flow control valve 10 and the communication of the first and second communication openings 301 and 302 of the softening filter element 20 of the water treatment device 1 with the first opening 1101 (or the first through hole 111) and the soft water inlet 1107 (or the soft water inlet through hole 117) of the valve body 11, respectively. Accordingly, the first opening 1101 of the valve body 11 communicates with the first communication opening 301 of the softening filter element 20 of the water treatment device 1 through the first communication pipe 141 and the first communication opening 1401, and the soft water inlet 1107 of the valve body 11 communicates with the second communication opening 302 of the softening filter element 20 of the water treatment device 1 through the second communication pipe 142 and the second communication opening 1402.

As shown in fig. 2A to 7G of the drawings, the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention further includes a filter core connector 14, wherein the water flow opening through hole 115 is disposed at the filter core connector 14, the filter core connector 14 further includes at least one first fastening portion 145, wherein the first fastening portion 145 is disposed at the outer side of the valve body 11 of the reverse flow control valve 10, so that the valve body 11 of the reverse flow control valve 10 is fastened to the purification filter core 30. It can be understood by those skilled in the art that the first fastening portion 145 of the filter element connector 14 can be a snap-fit structure for snap-fitting the valve body 11 of the reverse flow control valve 10 and the purification filter element 30 together, a screw structure for screw-fitting the valve body 11 of the reverse flow control valve 10 and the purification filter element 30 together, or other connection methods.

As shown in fig. 2A to 7G of the drawings, the faucet water softener according to the embodiment of the present invention further includes a baffle plate 90, wherein the baffle plate 90 is disposed between the filter core connector 14 of the reverse flow control valve 10 and the purification filter core 30, preferably, the baffle plate 90 is disposed between the filter core connector 14 of the reverse flow control valve 10 and the base 312 of the purification filter core 30, wherein the baffle plate 90 has a first guide through hole 901, the first guide through hole 901 has a first guide opening 9011 and a second guide opening 9012, wherein the baffle plate 90 further has a first side 91 and a second side 92, wherein the first guide opening 9011 is disposed at the first side 91 of the baffle plate 90, the second guide opening 9012 is disposed at the second side 92 of the baffle plate 90, wherein the first side 91 of the baffle plate 90 is disposed toward the filter core connector 14 of the reverse flow control valve 10, the second side 92 is disposed toward the base 312 of the purification cartridge 30. Further, the first flow guide opening 9011 is disposed to be in communication with the water flow opening through hole 115, and the second flow guide opening 9012 is disposed to be in communication with the raw water opening 3101 of the purification cartridge 30. In other words, the first flow guiding through hole 901 of the flow guiding plate 90 is respectively communicated with the water flow opening through hole 115 (the water flow opening 1115) and the raw water port 3101 of the purifying filter element 30. Preferably, the baffle 90 is made of a sealing material to be capable of being water-tightly disposed between the base 312 of the purification cartridge 30 and the reverse flow control valve 10, thereby functioning to water-tightly seal between the base 312 of the purification cartridge 30 and the cartridge connector 14 of the reverse flow control valve 10.

As shown in fig. 1 to 7G of the drawings, the valve body 11 of the backflow control valve 10 of the faucet water softener according to the embodiment of the present invention forms a first side 1111 and a second side 1112, the valve chamber 110 has a valve chamber opening 1100, and the valve chamber opening 1100 is disposed on the second side 1112 of the valve body 11. Preferably, the first side 1111 and the second side 1112 of the valve body 11 are disposed opposite to each other.

As shown in fig. 1 to 7G of the drawings, the valve body 11 of the backflow control valve 10 of the faucet water softener according to the embodiment of the present invention includes a valve body 1113, a sealing portion 1114 and an opening portion 1117, wherein the valve body 1113 is disposed between the sealing portion 1114 and the opening portion 1117, and the valve body 1113, the sealing portion 1114 and the opening portion 1117 enclose the valve chamber 110, and the opening portion 1117 forms the valve chamber opening 1100. Accordingly, the sealing portion 1114 of the valve body 11 forms the first side 1111 of the valve body 11, and the opening portion 1117 of the valve body 11 forms the second side 1112 of the valve body 11. Preferably, the valve body 1113 and the seal 1114 are integrally formed. More preferably, the valve body 1113, the sealing portion 1114, and the opening portion 1117 are integrally formed. Preferably, the first opening 1101, the second opening 1102, the third opening 1103, the raw water inlet 1104, the water flow opening 1115, the drain opening 1106, the soft water inlet 1107, the soft water outlet 1108, and the raw water outlet 1109 are disposed at an inner wall of the valve body main body 1113 of the valve body 11. More preferably, the raw water inlet 1104 is provided at the top of the valve body 1113 of the valve body 11.

As shown in fig. 1 to 7G of the drawings, the reverse flow control valve 10 of the faucet water softener according to the embodiment of the utility model further includes a faucet connector 15, wherein the faucet connector 15 includes an adaptor 151 and a fastener 152, wherein the adaptor 151 has a connection end 1511 adapted to be connected to a faucet and an adaptor end 1512 extending from the connection end 1511, the fastener 152 has a holding end 1521 and a fastening end 1522 adapted to be fixedly connected to the raw water inlet 1104 of the valve body 11, wherein the adaptor 151 forms a communication cavity 1510 adapted to be respectively communicated with the faucet and the raw water inlet 1104 of the valve body 11, the holding end 1521 of the fastener 152 forms a socket opening 15210, the fastening end 2 of the fastener 152 forms a fastening cavity 15220 communicated with the socket opening 15210, wherein the inner diameter of the socket cavity 15220 of the fastener 152 is larger than the inner diameter of the socket opening 15210, and the outer diameter of the connecting end 1511 of the adaptor 151 is not greater than the inner diameter of the socket opening 15210 of the fastener 152, and the outer diameter of the adaptor 1512 of the adaptor 151 is not greater than the inner diameter of the fastening cavity 15220 and is greater than the inner diameter of the socket opening 15210, so that the adaptor 1512 of the adaptor 151 can be retained in the fastening cavity 15220 of the fastener 152 when the connecting end 1511 of the adaptor 151 passes out of the socket opening 15210 of the fastener 152. Further, when the faucet connector 15 of the present invention is used to mount the reverse flow control valve 10 of the faucet water softener of the present invention on a faucet, the retaining end 1521 of the fastening member 152 can be sleeved on the connecting end 1511 of the adaptor 151, the connecting end 1511 can be fixed on the faucet, and then the fastening member 152 can be fixed on the top of the valve body 11 by the fastening end 1522 thereof, so that the communication cavity 1510 of the adaptor 151 is respectively communicated with the faucet and the raw water inlet 1104 of the valve body 11. It will be understood by those skilled in the art that the connection end 1511 of the adaptor 151 of the faucet connector 15 of the present invention can be installed or fixed on a water tap, even a water pipe, by screwing, plugging or any other means that facilitates the communication between the raw water inlet 1104 of the reverse flow control valve 10 of the faucet water softener of the present invention and the water tap. It will be understood by those skilled in the art that the fastening end 1522 of the fastening member 152 of the faucet connector 15 of the present invention can be mounted or fixed on the valve body 11 by screwing, plugging or any other means that facilitates the communication between the raw water inlet 1104 of the reverse flow control valve 10 of the faucet water softener and the water faucet. It can be understood by those skilled in the art that a sealing gasket or a sealing ring is disposed between the connection end 1511 of the adaptor 151 of the faucet connector 15 and the faucet, and between the adaptor end 1512 of the adaptor 151 of the faucet connector 15 and the raw water inlet 1104 of the valve body 11, so as to prevent water from leaking.

As shown in fig. 1 to 7G of the drawings, the valve core 12 of the reverse flow control valve 10 of the faucet water softener according to the embodiment of the utility model includes an operation end 121 and a control end 122 extending from the operation end 121, wherein the control end 122 of the valve core 12 is adapted to be disposed in the valve cavity 110 formed by the valve body 11, and the control end 122 of the valve core 12 forms the communication chamber 120, the first passage 101, the second passage 102 and the third passage 103. It is understood that the control end 122 of the valve element 12 is disposed within the valve chamber 110 and the operation end 121 of the valve element 12 protrudes from the valve chamber opening 1100 for easy operation by a user.

As shown in fig. 1 to 7G of the drawings, the reverse flow control valve 10 of the faucet water softener according to the embodiment of the utility model further includes an actuating member 16, wherein the actuating member 16 is disposed at the operating end 121 of the valve core 12, so that a user can rotate the actuating member 16 to rotate the operating end 121 of the valve core 12 and control the reverse flow control valve 10 to be at a corresponding working position. It is understood that the driver 16 may be any mechanism or component that can be used to drive the valve spool 12 of the reverse flow control valve 10 to rotate relative to the valve body 11. Illustratively, the drive member 16 may be a knob, a drive handle, or a drive rod.

As shown in fig. 1 to 7G of the drawings, the reverse flow control valve 10 of the faucet water softener according to the embodiment of the present invention further includes a positioning assembly 50, wherein the positioning assembly 50 has a limiting element 51 and a restoring element 52 disposed at the limiting element 51, a set of arc-shaped limiting grooves 501 disposed at the inner wall of the valve body 11 and an operating chamber 160 disposed at the operating end 121, wherein the limiting element 51 and the restoring element 52 are both disposed in the operating chamber 160, and the restoring element 52 is disposed between the limiting element 51 and the operating end 121, such that when the operating end 121 is rotated and the limiting element 51 faces the limiting grooves 501, the limiting element 51 will move into the limiting grooves 501 under the restoring force (or elastic force) of the restoring element 52; at this time, when the operation end 121 is continuously rotated so that the stopper member 51 is pressed by the stopper groove 501 of the valve body 11, thereby retracting the stopper member 51 into the operation chamber 160, the operation end 121 can be easily rotated and the stopper member 51 can be kept retracted into the operation chamber 160 by the pressing of the stopper groove 501 of the valve body 11. It will be appreciated that the operating end 121 is rotated so that the restriction element 51 faces the restriction groove 501, so that when the restriction element 51 moves into the restriction groove 501, the reverse flow control valve 10 is maintained in a corresponding operating position, and the faucet water softener of the present invention is in a corresponding operating state. It will be appreciated that the return element 52 is a return spring. Optionally, the reset element 52 is a reset spring. Preferably, the position-limiting element 51 is configured to engage with the position-limiting groove 501, so that the position-limiting element 51 can be stably retained in the position-limiting groove 501 when the driving member 16 is driven to rotate in the absence of proper external force.

It should be noted that, as shown in fig. 1 to 7G of the drawings, the soft water inlet 1107 (or the soft water outlet 1108 or the third opening 1103), the first opening 1101 (or the blowdown opening 1106), the second opening 1102, the raw water outlet 1109 and the water flow opening 1115 of the faucet water softener according to the embodiment of the present invention are disposed on the inner wall of the valve body 11 (as viewed from the first side 1111 to the valve cavity opening 1100 of the second side 1112 of the valve body 11) counterclockwise in this order, so that the four working states of the faucet water softener according to the present invention, namely the softening working state, the regeneration working state, the raw water supply working state and the water supply working state, are distributed counterclockwise, particularly, the switching between the adjacent working states of the faucet water softener according to the present invention, between the raw water softening working state and the regeneration working state, between the regeneration working state and the raw water supply working state, and the water supply working state, this can be achieved by rotating the spool 12 by only one station angle. When a user needs to switch the faucet water softener according to the embodiment of the present invention from the softening operation state to the regeneration operation state, the valve core 12 only needs to be rotated counterclockwise by one station angle, so that the first channel 101 (or the communication opening thereof) of the valve core 12 faces the second opening 1102 of the valve body 11, the second channel 102 of the valve core 12 faces the sewage discharge opening 1106 and the first opening 1101 of the valve body 11, and the third channel 103 of the valve core 12 faces the soft water inlet 1107 and the third opening 1103 of the valve body 11; when a user needs to switch the faucet water softener according to the embodiment of the present invention from the regeneration operation state to the raw water supply operation state, the valve core 12 needs to be rotated counterclockwise by a working position angle again, so that the first channel 101 of the valve core 12 faces the raw water outlet 1109 of the valve body 11; when a user needs to switch the faucet water softener according to the embodiment of the present invention from the raw water supplying operation state to the water supplying operation state, the valve core 12 needs to be rotated counterclockwise again by a station angle, so that the first channel 101 of the valve core 12 faces the water flow opening 1115 of the valve body 11. It will be appreciated that each station angle of the valve cartridge 12 of the present invention may preferably be set to 45 degrees.

It is noted that the first, second, third, fourth, fifth and/or sixth are used herein only for naming and distinguishing between different components (or elements) of the present invention, and do not have a meaning that is sequential or quantitative in nature.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are given by way of example only and are not limiting of the utility model.

The objects of the utility model have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims (40)

1. A faucet water softener, comprising:

a softening cartridge, wherein the softening cartridge defines a first communication opening and a second communication opening;

a purification cartridge, wherein the purification cartridge defines a raw water port and a clean water port; and

a reverse flow control valve, wherein the reverse flow control valve comprises a valve body and a valve core, wherein the valve body forms a valve cavity, a first opening, a second opening, a third opening, a soft water inlet, a soft water outlet, a raw water inlet and a water flow opening, wherein the valve core is arranged in the valve cavity, wherein the first opening of the valve body is suitable for being communicated with the first communication opening of the softening filter element, the soft water inlet of the valve body is suitable for being communicated with the second communication opening of the softening filter element, the water flow opening is suitable for being communicated with the raw water port of the purifying filter element, the raw water inlet of the valve body is suitable for being communicated with a raw water source, and the valve core is arranged to be capable of rotating around a central shaft thereof.

2. The faucet water softener of claim 1 wherein the reverse flow control valve further has an ejector, wherein the ejector has an ejection port adapted to communicate with the second opening of the valve body, an injection port adapted to communicate with the third opening of the valve body, and a salt absorption port communicating with the ejection port and the injection port, respectively.

3. The faucet water softener of claim 2, wherein the valve core of the reverse flow control valve forms a first communication passage and a second communication passage when the reverse flow control valve is in a softening operation position, wherein the first communication passage is respectively communicated with the first opening of the valve body and the raw water inlet, and the second communication passage is respectively communicated with the soft water inlet and the soft water outlet of the valve body; when the reverse flow control valve is at a water supply working position, the valve core of the reverse flow control valve forms a water supply communicating channel which is respectively communicated with the water flow opening of the valve body and the raw water inlet.

4. The faucet water softener of claim 3, wherein the valve body further forms a blowdown opening, wherein the valve spool of the reverse flow control valve forms a third communication passage, a fourth communication passage and a fifth communication passage when the reverse flow control valve is in a regeneration operation position, wherein the third communication passage communicates with the second opening and the raw water inlet of the valve body, respectively, the fourth communication passage communicates with the soft water inlet and the third opening, respectively, and the fifth communication passage communicates with the first opening and the blowdown opening of the valve body, respectively.

5. The faucet water softener of claim 4 wherein the valve body further defines a raw water outlet, wherein the valve spool of the reverse flow control valve defines a sixth communication passage when the reverse flow control valve is in a raw water supply operating position, wherein the sixth communication passage communicates with the raw water outlet and the raw water inlet of the valve body, respectively.

6. The faucet water softener of claim 3, wherein the valve core forms a communication chamber, a first passage, a second passage and a third passage, wherein the communication chamber is respectively communicated with the raw water inlet and the first passage of the valve body, wherein the communication chamber and the first passage of the valve core form the first communication passage respectively communicated with the first opening and the raw water inlet of the valve body, and the second passage forms the second communication passage respectively communicated with the soft water inlet and the soft water outlet of the valve body, when the reverse flow control valve is in the softening operating position; when the reverse flow control valve is at the water supply working position, the communicating cavity and the first channel form the water supply communicating channel which is respectively communicated with the water flow opening of the valve body and the raw water inlet.

7. The faucet water softener of claim 6, wherein the valve body further forms a sewage opening, wherein when the reverse flow control valve is in a regeneration operation position, the communication chamber of the valve core and the first passage form a third communication passage respectively communicating with the second opening and the raw water inlet of the valve body, the third passage forms a fourth communication passage respectively communicating with the soft water inlet and the third opening of the valve body, and the second passage forms a fifth communication passage respectively communicating with the first opening and the sewage opening of the valve body.

8. The faucet water softener of claim 7 wherein the valve body further forms a raw water outlet, wherein the communication chamber of the valve core and the first passage form a sixth communication passage respectively communicating with the raw water outlet and the raw water inlet of the valve body when the reverse flow control valve is in a raw water supply operation position.

9. The faucet water softener of claim 6 wherein the second, third and water flow openings of the valve body are blocked by the valve spool when the reverse flow control valve is in the softening position.

10. The faucet water softener of claim 7 wherein the soft water outlet and the water flow opening of the valve body are respectively blocked by the valve core when the reverse flow control valve is in the regeneration operating position.

11. The faucet water softener of claim 8, wherein the soft water inlet, the soft water outlet, the drain opening, the third opening and the water flow opening of the valve body are respectively blocked by the valve spool when the reverse flow control valve is in the raw water supply operation position.

12. The faucet water softener according to claim 8, wherein the soft water inlet, the first opening, the second opening, the raw water outlet, the water flow opening, the third opening, the sewage discharge opening and the soft water outlet of the valve body are separately provided at an inner wall of the valve body, wherein the soft water inlet, the first opening, the second opening, the raw water outlet and the water flow opening are located at a same height position of the inner wall of the valve body, the sewage discharge opening and the soft water outlet are located at another same height position of the inner wall of the valve body, and the first opening and the sewage discharge opening of the valve body are adjacent, and the soft water inlet of the valve body is adjacent to the soft water outlet and the third opening, respectively.

13. The faucet water softener according to claim 12, wherein the soft water inlet, the first opening, the second opening, the raw water outlet and the water flow opening of the valve body are disposed counterclockwise on an inner wall of the valve body in this order.

14. The faucet water softener of claim 12 wherein the second passage is not in communication with the breakover chamber, the first passage and the third passage, and the third passage is not in communication with the breakover chamber and the first passage.

15. The faucet water softener of claim 13 wherein the through-cavity of the valve core forms a cavity main body, an annular groove and at least one through-hole, wherein the annular groove communicates with the raw water inlet, the through-hole communicates with the cavity main body and the annular groove, respectively, and the cavity main body of the through-cavity communicates with the first passage and the through-hole, respectively.

16. The faucet water softener of claim 15 wherein the annular groove is provided on an outer side wall of the valve core to maintain communication between the annular groove and the raw water inlet.

17. The faucet water softener of any one of claims 1-16 wherein the softening cartridge comprises an outer housing, an inner housing, and softening material, wherein the outer housing forms a first receiving chamber, the inner housing forms a second receiving chamber, wherein the inner housing is disposed within the first receiving chamber of the outer housing, and the outer housing and the inner housing form a first softening chamber therebetween, wherein the softening material is disposed within the first softening chamber, wherein the first softening chamber is in communication with the second receiving chamber of the inner housing.

18. The faucet water softener of claim 17, wherein the first communication opening communicates with the first softening chamber, the second communication opening communicates with the second receiving chamber of the inner housing, and the first and second receiving chambers each have the softening material disposed therein, wherein the total volume of the softening material is not more than 2L.

19. The faucet water softener of claim 18 wherein the softening cartridge further comprises a base, wherein the outer housing and the inner housing are both disposed at the base, and the first communication opening and the second communication opening are both formed at the base.

20. The faucet water softener according to claims 8, 11, 12, 13, 14, 15 or 16, the valve body further forming a first through hole, a second through hole, a third through hole, a water inlet through hole, a water flow opening through hole, a sewage discharge through hole, a soft water inlet through hole, a soft water outlet through hole and a raw water outlet through hole, wherein the first through hole is adapted to communicate with the first opening and the first communication opening, respectively, the second through hole is adapted to communicate with the second opening and the jet outlet of the jet ejector, respectively, the third through hole is adapted to communicate with the third opening and the jet inlet of the jet ejector, respectively, the water inlet through hole is adapted to communicate with the raw water inlet and a source of water, respectively, the raw water flow opening through hole is adapted to communicate with the water flow opening and the jet outlet of the purification cartridge, respectively, the sewage discharge through hole is communicated with the sewage discharge opening, the soft water inlet through hole is suitable for being communicated with the soft water inlet and the second communication opening respectively, the soft water outlet through hole is communicated with the soft water outlet, and the raw water outlet through hole is communicated with the raw water outlet.

21. A reverse flow control valve for a faucet water softener, comprising:

a valve body; and

a valve core, wherein the valve body forms a valve cavity, a first opening, a second opening, a third opening, a soft water inlet, a soft water outlet, a raw water inlet and a water flow opening, wherein the valve core is arranged in the valve cavity, wherein the valve core is arranged to rotate around the central shaft thereof.

22. The reverse flow control valve according to claim 21, further comprising an ejector, wherein the ejector has an outlet adapted to communicate with the second opening of the valve body, an inlet adapted to communicate with the third opening of the valve body, and a salt-adsorbing port communicating with the outlet and the inlet, respectively.

23. The reverse flow control valve according to claim 22, wherein the spool of the reverse flow control valve forms a first communicating passage and a second communicating passage when the reverse flow control valve is in a softening operation position, wherein the first communicating passage communicates with the first opening and the raw water inlet of the valve body, respectively, and the second communicating passage communicates with the soft water inlet and the soft water outlet of the valve body, respectively; when the reverse flow control valve is at a water supply working position, the valve core of the reverse flow control valve forms a water supply communicating channel which is respectively communicated with the water flow opening of the valve body and the raw water inlet.

24. The reverse flow control valve according to claim 23, wherein the valve body further defines a drain opening, wherein when the reverse flow control valve is in a regeneration operation position, the valve spool of the reverse flow control valve defines a third communication passage, a fourth communication passage and a fifth communication passage, wherein the third communication passage communicates with the second opening and the raw water inlet of the valve body, respectively, the fourth communication passage communicates with the soft water inlet and the third opening, respectively, and the fifth communication passage communicates with the first opening and the drain opening of the valve body, respectively.

25. The reverse flow control valve as claimed in claim 24, wherein the valve body further defines a raw water outlet, wherein the spool of the reverse flow control valve defines a sixth communication passage when the reverse flow control valve is at a raw water supply operation position, wherein the sixth communication passage communicates with the raw water outlet and the raw water inlet of the valve body, respectively.

26. The reverse flow control valve according to claim 23, wherein the valve spool forms a communication chamber, a first passage, a second passage and a third passage, wherein the communication chamber communicates with the raw water inlet and the first passage of the valve body, respectively, wherein the communication chamber and the first passage of the valve spool form the first communication passage communicating with the first opening and the raw water inlet of the valve body, respectively, and the second passage forms the second communication passage communicating with the soft water inlet and the soft water outlet of the valve body, respectively, when the reverse flow control valve is in the softening operation position; when the reverse flow control valve is at the water supply working position, the communicating cavity and the first channel form the water supply communicating channel which is respectively communicated with the water flow opening of the valve body and the raw water inlet.

27. The reverse flow control valve according to claim 26, wherein the valve body further defines a drain opening, wherein when the reverse flow control valve is in a regeneration operation position, the communication chamber of the valve spool and the first passage define a third communication passage respectively communicating with the second opening and the raw water inlet of the valve body, the third passage define a fourth communication passage respectively communicating with the soft water inlet and the third opening of the valve body, and the second passage define a fifth communication passage respectively communicating with the first opening and the drain opening of the valve body.

28. The reverse flow control valve according to claim 27, wherein the valve body further defines a raw water outlet, and wherein the communication chamber of the valve spool and the first passage define a sixth communication passage communicating with the raw water outlet and the raw water inlet of the valve body, respectively, when the reverse flow control valve is at a raw water supply operation position.

29. The reverse flow control valve of claim 26, wherein the second opening, the third opening, and the water flow opening of the valve body are blocked by the valve spool, respectively, when the reverse flow control valve is in the softening operating position.

30. The reverse flow control valve according to claim 27, wherein the soft water outlet and the water flow opening of the valve body are respectively blocked by the valve spool when the reverse flow control valve is in the regeneration operation position.

31. The reverse flow control valve according to claim 28, wherein the soft water inlet, the soft water outlet, the drain opening, the third opening and the water flow opening of the valve body are respectively blocked by the valve spool when the reverse flow control valve is in the raw water supply operation position.

32. The reverse flow control valve according to claim 28, wherein the soft water inlet, the first opening, the second opening, the raw water outlet, the water flow opening, the third opening, the sewage opening and the soft water outlet of the valve body are spaced apart from each other and disposed on an inner wall of the valve body, wherein the soft water inlet, the first opening, the second opening, the raw water outlet and the water flow opening are located at a same height position of the inner wall of the valve body, the sewage opening and the soft water outlet are located at another same height position of the inner wall of the valve body, and the first opening and the sewage opening of the valve body are adjacent to each other, and the soft water inlet of the valve body is adjacent to the soft water outlet and the third opening, respectively.

33. The reverse flow control valve according to claim 32, wherein the soft water inlet, the first opening, the second opening, the raw water outlet and the water flow opening of the valve body are disposed counterclockwise in this order on an inner wall of the valve body.

34. The reverse flow control valve of claim 32, wherein the second passageway is not in communication with the lead-through chamber, the first passageway and the third passageway, and the third passageway is not in communication with the lead-through chamber and the first passageway.

35. The reverse flow control valve according to claim 33, wherein the through-chamber of the spool forms a chamber main body, an annular groove and at least one through-hole, wherein the annular groove communicates with the raw water inlet, the through-holes communicate with the chamber main body and the annular groove, respectively, and the chamber main body of the through-chamber communicates with the first passage and the through-hole, respectively.

36. The reverse flow control valve according to claim 35, wherein the annular groove is provided at an outer side wall of the valve spool to maintain communication between the annular groove and the raw water inlet.

37. The reverse flow control valve according to any one of claims 22 to 36, wherein the ejector comprises a jet body, wherein the jet body is plate-shaped, wherein the jet body forms a nozzle, a suction chamber and a mixing chamber, wherein the nozzle communicates with the ejection port, the suction chamber communicates with the salt suction port, the mixing chamber communicates with the ejection port, and the nozzle, the suction chamber and the mixing chamber form a three-way communication structure.

38. The reverse flow control valve according to claim 28, 31, 32, 33, 34, 35 or 36, the valve body further defining a first through-hole communicating with the first opening, a second through-hole communicating with the second opening and the jet outlet of the jet injector respectively, a third through-hole communicating with the second opening and the jet outlet of the jet injector respectively, a water inlet through-hole communicating with the soft water inlet and the raw water source respectively, a water discharge through-hole communicating with the water discharge opening, a soft water inlet through-hole communicating with the soft water outlet through-hole, the raw water outlet through hole is communicated with the raw water outlet.

39. The reverse flow control valve according to claim 28, 31, 32, 33, 34, 35 or 36, further comprising a set of seals, the valve body having a set of seal grooves, wherein the seal grooves are disposed on an inner wall of the valve body and surround the first opening, the second opening, the third opening, the soft water inlet, the soft water outlet, the raw water outlet, the water flow opening and the sewage discharge opening of the valve body, respectively, the seals being disposed to be engaged in the seal grooves.

40. The reverse flow control valve according to any one of claims 26-36, wherein the spool includes an operating end and a control end extending from the operating end, wherein the control end of the spool is adapted to be disposed within the valve cavity formed by the valve body, and the control end of the spool forms the communication chamber, the first passage, the second passage, and the third passage.

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