CN217713750U - Multi-way valve, fixed valve plate and water softener - Google Patents

Abstract

The utility model relates to a multiple unit valve, fixed valve piece and water softener, including the valve body, the valve body has a valve pocket, and has seted up a plurality of intercommunicating pores on the valve body, and arbitrary intercommunicating pore is selected to be switched on with remaining at least one intercommunicating pore and forms a plurality of flow paths with the valve pocket intercommunication to along the rivers direction of flow path, the flow area of the intercommunicating pore that is located the most upstream is greater than the flow area of remaining intercommunicating pore. So, the flow area through setting up the intercommunicating pore of the most upper reaches is the biggest for the liquid of sufficient volume flows into the multiple unit valve, and in shunting to other intercommunicating pores that flow area is less behind a plurality of flow paths, make the flow area of the flow path of the different positions of multiple unit valve can carry out big or small design according to actual flow, thereby provide a water route and set up reasonable multiple unit valve, guarantee that the water supply effect of water softener is better.

Description

Multi-way valve, fixed valve plate and water softener

Technical Field

The application relates to the technical field of water treatment, in particular to a multi-way valve, a fixed valve plate and a water softener.

Background

At present, a tap water source used in cities is usually collected from underground water, but the underground water usually contains angled calcium ions and magnesium ions, so that water is easy to scale in the using process, and further the damage of an electric appliance is caused, hard water is softened, lithiasis can be effectively prevented, the burden of heart and kidney is relieved, the health of people is benefited, meanwhile, the damage of the electric appliance caused by excessive scale accumulation is avoided, and therefore the water softener capable of softening the hard water is used more and more frequently in life.

The water softener usually exchanges calcium and magnesium ions in water through functional ions on resin, so that redundant calcium and magnesium ions in water are adsorbed, and the aim of removing scale is fulfilled. The water softener among the prior art generally includes integrated water route and connects water softener and the confession salt device on integrated water route, and during the raw water got into water softener through integrated water route, the resin layer among the water softener can soften the raw water and export the soft water through integrated water route and supply the user to use. When all the resins are fully adsorbed with calcium and magnesium ions, the water softener can not soften tap water any more, and at the moment, backwashing regeneration needs to be carried out on the exchange resins. The salt in the salt supply device is dissolved and saturated by injected water and then enters the soft water device, and the resin is soaked by saturated salt solution, so that a large number of sodium ions in the saturated salt solution replace calcium and magnesium ions adsorbed on the resin. When calcium and magnesium ions are replaced, the resin achieves the effect of reduction and regeneration, and the next water softening work is prepared.

In the existing water softener, the multi-way valve is used as a core component for controlling the flow direction of water in the integrated water channel, and water flow can be controlled to flow in different directions in different structures by controlling the multi-way valve to be switched in different stations, so that the effects of water supply, backwashing, regeneration, water replenishing and the like are realized, and therefore waste water generated by cleaning resin and raw water to be softened are collected in the multi-way valve.

When water flow in an existing integrated water channel passes through the multi-way valve, the flow circulation areas at the upstream and the downstream are the same, but the water flow at the downstream is reduced because the water flow is split at the upstream, but the flow circulation area of an internal flow channel of the multi-way valve is not designed according to actual flow, so that the structure of the multi-way valve is unreasonable.

SUMMERY OF THE UTILITY MODEL

This application sets up unreasonable problem to multiple unit valve waterway structure, provides a multiple unit valve, decides valve block and water softener, and this multiple unit valve, decides valve block and water softener can reach waterway structure and set up reasonable technological effect.

According to one aspect of the present application, there is provided a multiple-way valve comprising:

the valve body is provided with a valve cavity, a plurality of communication holes are formed in the valve body, and any communication hole can be selectively communicated with at least one of the other communication holes to form a plurality of flow paths communicated with the valve cavity;

and, in the water flow direction of the flow path, the flow area of the communication hole positioned most upstream is larger than the flow area of the remaining communication holes.

In one embodiment, the flow area of the communication hole is gradually reduced along the water flow direction of the flow path.

In one embodiment, the multi-way valve has seven stations, the communication holes comprise four, and any one communication hole can be selectively communicated with at least one of the other communication holes so that the multi-way valve can be switched among seven different stations.

In one embodiment, the communication holes include first and second communication holes, third and fourth communication holes;

when the multi-way valve is positioned at a water supply station, the first communication hole, the third communication hole, the fourth communication hole and the second communication hole are communicated in sequence to form a first flow path;

the flow area of the first communication hole is larger than the flow area of the third communication hole and the flow area of the fourth communication hole is larger than the flow area of the second communication hole.

In one embodiment, when the multi-way valve is located at the rest six stations, the first communication hole and the second communication hole are communicated to form a second flow path.

In one embodiment, the first communication hole, the fourth communication hole, the second communication hole and the third communication hole are sequentially distributed at intervals in the circumferential direction of the valve body.

In one embodiment, the third communication hole and the fourth communication hole are annularly provided to extend in a circumferential direction of the valve body.

In one embodiment, the valve body comprises a seat body and a valve core assembly, wherein the seat body and the valve core assembly define the valve cavity together, and the valve cavity comprises a flow control part and a side wall circumferentially surrounding the flow control part;

the first communication hole is formed in the side wall, and the second communication hole is formed in one side, far away from the first communication hole, of the flow control part; the third communication hole and the fourth communication hole are formed in the flow control portion.

According to one aspect of the application, a fixed valve plate is provided, a plurality of communication holes are formed in the fixed valve plate in a penetrating mode, and any one of the communication holes can be selectively communicated with at least one of the other communication holes to form a flow path;

and the flow area of the communication hole positioned at the most upstream is larger than the flow area of the other communication holes in the water flow direction of the flow path.

In one embodiment, the flow area of the communication hole is gradually reduced in the water flow direction of the flow path.

In one embodiment, the communication holes include first and second communication holes, third and fourth communication holes;

when the multi-way valve is positioned at a water supply station, the first communication hole, the third communication hole, the fourth communication hole and the second communication hole are communicated in sequence to form a first flow path;

the flow area of the first communication hole is larger than the flow area of the third communication hole and the flow area of the fourth communication hole is larger than the flow area of the second communication hole.

According to one aspect of the present application, there is provided a water softener including the multi-way valve described above.

Above-mentioned multiple unit valve, it is the biggest through the flow area who sets up the intercommunicating pore of most upper reaches for the liquid of sufficient volume flows into the multiple unit valve, and in shunting to other intercommunicating pores that flow area is less behind a plurality of flow paths, make the flow area of the flow path of multiple unit valve different positions can carry out big or small design according to actual flow, thereby provide a water route and set up reasonable multiple unit valve, guarantee that water softener's water supply effect is better.

Drawings

FIG. 1 is a schematic view of a portion of the structural modules of a water softener according to an embodiment of the present application;

FIG. 2 is a schematic view of a communication port of a multiplex valve according to an embodiment of the present application;

FIG. 3 is a schematic view of the multi-way valve of an embodiment of the present application in a service position;

FIG. 4 is a schematic view of the multi-way valve of an embodiment of the present application in a backwash station;

FIG. 5 is a schematic view of the multi-way valve of an embodiment of the present application in a first regeneration position;

FIG. 6 is a schematic view of the multi-way valve of an embodiment of the present application in a slow wash station;

FIG. 7 is a schematic view of the multi-way valve of an embodiment of the present application being in a second regeneration position;

FIG. 8 is a schematic view of the multi-way valve of an embodiment of the present application being conducted at a water replenishing station;

FIG. 9 is a schematic view of the multi-way valve of an embodiment of the present application in a forward cleaning position;

FIG. 10 is a schematic view of the internal structure of a multi-way valve according to an embodiment of the present application;

FIG. 11 is a schematic view of a portion of the multi-way valve of FIG. 10;

FIG. 12 is a schematic structural view of a fixed valve plate of the multi-way valve shown in FIG. 10;

FIG. 13 is a schematic structural diagram of a movable valve plate of the multi-way valve shown in FIG. 10;

FIG. 14 is a cross-sectional view of the multiplex valve of FIG. 10.

The reference numbers indicate:

100. a water softener; 20. a multi-way valve; 21. a valve body; 211. a base body; A. a first communication hole; B. a second communication hole; C. a third communication hole; D. a fourth communication hole; 22. a valve core assembly; 221. a fixed valve plate; 223. a movable valve plate; 2232. a first connecting groove; 2234. a second communicating groove; 2236. a third communicating groove; 2238. a flow breaking portion; 23. a valve stem; 24. a spool nut; 25. a valve cavity; 40. a water softening device; 41. a resin tank; 43. a central tube; 45. an upper water distributor; 47. a lower water distributor; 60. an ejector; 80. a salt box; K. the flow channel is not interrupted.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

As shown in fig. 1, an embodiment of the present application provides a water softener 100, and the water softener 100 can remove calcium and magnesium ions in raw water through an ion exchange resin, so as to reduce water hardness and provide soft water with low content of calcium and magnesium ions for water using equipment.

As described in the background of the invention, and referring to fig. 1 and 2, a water softener 100 includes an integrated waterway and a water softener 40 and a salt supply connected to the integrated waterway. The integrated water channel comprises a multi-way valve 20 for controlling the flow direction of water, the water softening device 40 comprises a resin tank 41, an upper water distributor 45, a lower water distributor 47 and a central pipe 43, the resin tank 41 is filled with a resin layer formed by resin particles, the central pipe 43 is vertically inserted into the resin tank 41, the upper water distributor 45 and the lower water distributor 47 are respectively installed at two ends of the central pipe 43, the upper ends of the upper water distributor 45 and the central pipe 43 are connected with the multi-way valve 20, and the lower water distributor 47 is inserted into the resin layer. The salt supply device comprises a jet device 60 and a salt tank 80, the multi-way valve 20 is communicated with the salt tank 80 through the jet device 60, the jet device 60 comprises a first water guide inlet, a first water guide outlet, a second water guide inlet and a second water guide outlet which are respectively communicated with the multi-way valve 20, raw water in the multi-way valve 20 can enter the jet device 60 through the first water guide inlet and the second water guide inlet, and salt solution generated in the jet device 60 can flow into the multi-way valve 20 through the first water guide outlet or the second water guide outlet.

The multi-way valve 20 has seven stations of a water supply station, a backwashing station, a first regeneration station, a slow washing station, a second regeneration station, a water replenishing station and a forward washing station, and the multi-way valve 20 can be switched among the stations so that the water softener 100 has seven states of a water supply state, a backwashing state, a first regeneration state, a slow washing state, a second regeneration state, a water replenishing state and a forward washing state.

As shown in fig. 2 and 3, when the water softener 100 is in a water supply state, the multi-way valve 20 is in a water supply position, raw water enters the resin layer in the resin tank 41 through the multi-way valve 20 via the upper water distributor 45, calcium and magnesium ions in the raw water exchange with sodium ions on the resin layer to soften the water, and then the produced softened water enters the central pipe 43 through the lower water distributor 47 and finally flows out from the multi-way valve 20 to supply water to water using equipment.

As shown in fig. 2 and 4, when the water softener 100 is in a backwashing state, the multi-way valve 20 is in a backwashing position, part of raw water sequentially passes through the central pipe 43 and the lower water distributor 47 by the multi-way valve 20, then flushes the resin layer in the resin tank 41 from bottom to top, and the cleaned waste water is discharged from the multi-way valve 20 by the upper water distributor 45.

As shown in fig. 2 and 5, when the water softener 100 is in the first regeneration state, the multi-way valve 20 is in the first regeneration position, the raw water flows into the first water guide inlet of the ejector 60 through the multi-way valve 20, the saline in the salt tank 80 is sucked out and mixed with the raw water to form the saline solution with the first concentration due to the negative pressure, the saline solution flows out from the first water guide outlet of the ejector 60 and enters the resin layer in the resin tank 41 through the multi-way valve 20, the central pipe 43 and the lower water distributor 47 in sequence, and the saline solution is mixed with the resin layer to displace sodium and magnesium ions on the resin layer and then is discharged from the multi-way valve 20 through the upper water distributor 45.

As shown in fig. 2 and 6, when the water softener 100 is in a slow washing state, the multi-way valve 20 is in a slow washing station, raw water passes through the central pipe 43 and the lower water distributor 47 in sequence by the multi-way valve 20, then the resin layer in the resin tank 41 is slowly washed from bottom to top, and the washed waste water is discharged from the multi-way valve 20 through the upper water distributor 45.

As shown in fig. 2 and 7, when the water softener 100 is in the second regeneration state, the multi-way valve 20 is in the second regeneration position, the raw water flows into the second water guide inlet of the ejector 60 through the multi-way valve 20, the saline in the salt tank 80 is sucked out and mixed with the raw water to form the saline solution with the second concentration due to the negative pressure, the saline solution flows out from the second water guide outlet of the ejector 60 and enters the resin layer in the resin tank 41 through the multi-way valve 20, the central pipe 43 and the lower water distributor 47 in sequence, and the saline solution is mixed with the resin layer to replace sodium and magnesium ions on the resin layer and then is discharged from the multi-way valve 20 through the upper water distributor 45.

As shown in fig. 2 and 8, when the water softener 100 is in a water replenishing state, the multi-way valve 20 is in a water replenishing station, and raw water flows into the ejector 60 from the multi-way valve 20 and then enters the salt tank 80 to replenish water for the salt tank 80.

As shown in fig. 2 and 9, when the water softener 100 is in a forward washing state, the multi-way valve 20 is in a forward washing station, raw water enters the resin layer in the resin tank 41 through the multi-way valve 20 via the upper water distributor 45, water pressure slowly deposits fluffy resin and simultaneously separates dirt out, and the cleaned sewage is discharged from the multi-way valve 20 via the lower water distributor 47 and the central pipe 43 in sequence.

Referring to fig. 2 and 10 to 11, the multi-way valve 20 includes a valve chamber 25 and a valve body 21, the valve body 21 has a plurality of communication holes, any one of the communication holes is selectively communicated with at least one of the other communication holes to form a plurality of flow paths communicated with the valve chamber 25, and the communication hole positioned at the most upstream side in the flow direction of the flow paths has a larger flow area than the other communication holes.

So, the flow area through setting up the intercommunicating pore of most upper reaches is the biggest for enough volume liquid shunts after flowing into the multiple unit valve 20, and the less liquid of relative flow then flows into in the less other intercommunicating pores of flow area, makes the flow area of the different positions of multiple unit valve 20 can carry out the size design according to actual flow, thereby provides a water route and set up reasonable multiple unit valve 20, guarantees that water softener 100's water supply effect is better.

Specifically, in one embodiment, the multiplex valve 20 has four communication ports, and any one of the communication ports is selectively communicated with at least one of the remaining communication ports to enable the multiplex valve 20 to be switched between a plurality of different positions. It is to be understood that the number of communication holes in the multi-way valve 20 is not limited thereto, and may be set according to the number of stations to satisfy different requirements.

It is understood that when the multi-way valve 20 is in some of the stations, one of the communication holes may communicate with an external structure to form a flow path without communicating with other communication holes, and the area of the flow hole forming the flow path is not limited, and may be adaptively set according to the installation space.

Further, along the water flow direction, the flow area of the communication hole is gradually reduced, and along the water flow direction, the liquid is continuously shunted, so that the flow rate of the liquid which is more downstream is smaller, and at the moment, the flow area along the water flow direction is gradually reduced by arranging the communication hole, so that the waterway structure of the multi-way valve 20 is more reasonable and compact.

In one embodiment, referring to fig. 10 and 11, the valve body 21 includes a seat 211 and a valve core assembly 22, and the multiplex valve 20 further includes a valve rod 23 and a valve core nut 24. The pedestal 211 is cavity casing column structure, and the chamber that holds of one end intercommunication external environment is seted up to pedestal 211, holds the chamber and has and hold the chamber diapire and hold the chamber lateral wall, holds the chamber lateral wall and holds the chamber opening around holding the chamber diapire in order to form intercommunication external environment along circumference. The valve core assembly 22 is accommodated in the accommodating cavity of the seat body 211.

Further, the valve core assembly 22 includes a fixed valve plate 221 and a movable valve plate 223, the fixed valve plate 221 is fixedly installed in the accommodating cavity and abuts against the bottom wall of the accommodating cavity, and the movable valve plate 223 is stacked on one side of the fixed valve plate 221 away from the bottom wall of the accommodating cavity. A first axial end of the valve rod 23 extends into the accommodating cavity and is in transmission fit with the movable valve plate 223, and a second axial end of the valve rod 23 extends out of the accommodating cavity to be in fit with the driving unit. The spool nut 24 is sleeved outside one end of the valve rod 23, where the first axial end of the valve rod is connected to the second axial end, and is accommodated in the accommodating cavity, and the spool nut 24 is used for sealing an opening of the accommodating cavity to form a closed space and applying pressure to the spool assembly 22 to form end face sealing between the movable valve plate 223 and the fixed valve plate 221. Under the driving of the driving unit, the valve rod 23 drives the movable valve plate 223 to rotate relative to the fixed valve plate 221, so that the multi-way valve 20 is switched between different stations.

Thus, the valve core assembly 22 and the seat body 211 together define a valve cavity 25, the valve cavity 25 has a flow control portion and a sidewall circumferentially surrounding the flow control portion, wherein the flow control portion is formed by the bottom wall of the accommodating cavity and the valve core assembly 22 together, and the sidewall of the valve cavity 25 is formed by the sidewall of the accommodating cavity.

It is understood that a plurality of communication holes may be formed in at least one of the seat body 211, the fixed valve plate 221, or the movable valve plate 223. Referring to fig. 12, a plurality of communication holes are formed on the stationary plate 221, and in other embodiments, a plurality of communication holes may be directly formed on the seat body 211. The present application is not limited thereto.

As shown in fig. 13, the dynamic valve plate 223 is opened with a plurality of communicating grooves, and the plurality of communicating holes communicate with each other through the communicating grooves in the dynamic valve plate 223. Specifically, the surface of one side of the movable valve plate 223 facing the fixed valve plate 221 is provided with a first communicating groove 2232, a second communicating groove 2234 and a third communicating groove 2236, and the first communicating groove 2232, the second communicating groove 2234 and the third communicating groove 2236 are sequentially arranged at intervals in the circumferential direction of the movable valve plate 223. The first communicating groove 2232 is a sector extending along the circumferential direction of the movable valve plate 223, and the outer edge of the first communicating groove 2232 communicates with the outer peripheral edge of the movable valve plate 223. The second communicating groove 2234 is a long strip, and the edge of the automatic valve plate 223 extends to the center of the dynamic valve plate 223 along a radial direction and penetrates through the end surface of one side of the dynamic valve plate 223 far away from the fixed valve plate 221 at the center point. The third communicating groove 2236 is shaped like a "door" with an opening facing the edge of the movable valve plate 223.

With continued reference to fig. 2 and 10, the communication holes of the valve body 21 include a first communication hole a, a second communication hole B, a third communication hole C and a fourth communication hole D, and any one of the communication holes is selectively communicated with at least one of the remaining communication holes to switch the multiplex valve 20 between seven different positions.

Specifically, a first communication hole a is formed in a side wall of the valve chamber 25 to communicate with a raw water source, and raw water supplied from the raw water source flows into the valve chamber 25 through the first communication hole a. The second communication hole B is formed at a side of the flow control part away from the first communication hole a, and the other end of the second communication hole B communicates with the water using device to supply soft water to the water using device. The third communication hole C and the fourth communication hole D are formed in the flow control portion, and the second communication hole B, the fourth communication hole D, the third communication hole C, and the first communication hole a are spaced apart in the circumferential direction of the valve body 21.

When the multiway valve 20 is in the water supply station, the third communication hole C is communicated with the first communication hole a, the fourth communication hole D is communicated with the second communication hole B, and raw water flowing out of the first communication hole a enters the upper water distributor 45 through the third communication hole C, flows to the lower water distributor 47 through the central pipe 43 and then flows out through the central pipe 43. The soft water output from the central pipe 43 flows to the second communication hole B through the fourth communication hole D to supply water to the water using device. Thus, a first flow path is formed in which the first communication hole a, the third communication hole C, the fourth communication hole D, and the second communication hole B are sequentially communicated.

Moreover, the flow area of the first communicating hole a is larger than that of the third communicating hole C and that of the fourth communicating hole D is larger than that of the second communicating hole B, that is, the flow areas of the four communicating holes are gradually reduced along the water flow direction, so that the downstream communicating hole can set a flow area with a corresponding appropriate size according to the water amount after the water flow is split, and the structure of the multi-way valve 20 is reasonable.

In one embodiment, the second communication hole B and the fourth communication hole D are annularly provided extending in the circumferential direction of the valve body 21 to match the communication groove on the movable valve sheet 223.

Specifically, when the multi-way valve 20 is located at six stations, i.e., the backwashing station, the first regeneration station, the slow washing station, the second regeneration station, the water replenishing station, and the normal washing station, the first communication hole a and the second communication hole B are communicated to form a second flow path, and the raw water flowing out of the first communication hole a can be supplied to the water using equipment through the second communication hole B.

Further, referring to fig. 14, in order to achieve the communication between the first communication hole a and the second communication hole B, the outer diameter of the flow control portion of the valve chamber 25 is smaller than the inner diameter of the valve chamber 25, so that the flow control portion and the chamber side wall together define a continuous flow passage K circumferentially surrounding the flow control portion, and the raw water flowing into the valve chamber 25 from the first communication hole a may flow along the continuous flow passage K to circumferentially surround the flow control portion and then enter the second communication hole B to achieve the continuous supply of the raw water.

Further, as shown in fig. 13, a part of the edge of the movable valve plate 223 is protruded with a blocking portion 2238, and the blocking portion 2238 is used for blocking the uninterrupted flow path K. When the multi-way valve 20 is at the water supply station, the blocking portion 2238 shields the outer edge of the second communication hole B, so that the raw water in the non-blocking flow channel K cannot flow into the second communication hole B, thereby preventing the raw water from being supplied to the water using equipment.

As shown in fig. 2, 3 and 13, when the multi-way valve 20 is in the water supply position, the first communication hole a communicates with the third communication hole C through the non-stop flow path K and the first communication groove 2232, and the fourth communication hole D communicates with the second communication hole B through the third communication groove 2236.

Therefore, the raw water flows through the first communication hole a, the continuous flow path K, and the third communication hole C in sequence to enter the upper water distributor 45, and the soft water flowing out of the center pipe 43 flows through the fourth communication hole D and the second communication hole B in sequence to enter the water using device.

When the multi-way valve 20 is positioned at six stations, namely a backwashing station, a first regeneration station, a slow washing station, a second regeneration station, a water replenishing station and a forward washing station, the first communicating hole A is communicated with the second communicating hole B through the non-continuous flow channel K, so that raw water supply is realized.

According to another aspect of the present application, there is provided a multi-way valve 20 and a fixed valve plate 221 as described in the above embodiments.

Specifically, a plurality of communication holes are formed through the fixed valve plate 221, any one of the communication holes can be selectively communicated with at least one of the other communication holes to form a flow path, and the flow area of the communication hole positioned at the most upstream is larger than the flow area of the other communication holes in the water flow direction of the flow path.

So, the flow area through setting up the intercommunicating pore of the most upper reaches is the biggest for enough liquid flows into and shunts behind the intercommunicating pore of the fixed valve piece 221 most upper reaches, and then flows into in other less intercommunicating pores of flow area relatively little liquid of flow, makes the flow area of fixed valve piece 221 different positions can carry out the size design according to actual flow, thereby provides a water route structure and sets up reasonable fixed valve piece 221, and is better with the water supply effect of guaranteeing water softener 100.

Further, the flow area of the communication hole is gradually reduced in the water flow direction of the flow path. When water flows in the flow path, liquid is continuously shunted, the flow rate of the liquid which is more downstream is smaller, and the flow area is gradually reduced along the flow direction of the water flow by arranging the communication hole, so that the water path structure of the fixed valve plate 221 is more reasonable and compact.

In one embodiment, the communication holes of the fixed valve plate 221 include a first communication hole a, a second communication hole B, a third communication hole C, and a fourth communication hole D, and when the multi-way valve 20 is in the water supply position, the first communication hole a, the third communication hole C, the fourth communication hole D, and the second communication hole B are sequentially communicated to form a first flow path. Moreover, the flow area of the first communicating hole a is larger than that of the third communicating hole C and that of the fourth communicating hole D is larger than that of the second communicating hole B, that is, along the water flow direction, the flow areas of the four communicating holes are gradually reduced, so that the downstream communicating hole can set a flow area with a corresponding appropriate size according to the amount of water after the diversion, and the fixed valve plate 221 and the multi-way valve 20 are structurally reasonable.

Further, the number of the communication holes on the fixed valve plate 221 is not limited to four, and the number of the communication holes can be adaptively set according to the requirement of the station where the multi-way valve 20 is located, and the maximum flow area of the upstream communication holes is ensured, which is within the protection scope of the present application.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims (12)

1. A multi-way valve is characterized in that,

the valve body (21) is provided with a valve cavity (25), a plurality of communication holes are formed in the valve body (21), and any communication hole can be selectively communicated with at least one of the other communication holes to form a plurality of flow paths communicated with the valve cavity (25);

and, in the water flow direction of the flow path, the flow area of the communication hole positioned most upstream is larger than the flow area of the remaining communication holes.

2. The multi-way valve as recited in claim 1, wherein the flow area of the communication hole is gradually reduced in a water flow direction of the flow path.

3. The multiple unit valve as claimed in claim 1, characterized in that the multiple unit valve (20) has seven stations, the communication openings comprise four, and any one of the communication openings is selectively connectable to the remaining at least one of the communication openings to switch the multiple unit valve between seven different stations.

4. The multiple-way valve according to claim 3, characterized in that the communication holes comprise a first (A) and a second (B), a third (C) and a fourth (D) communication hole;

when the multi-way valve (20) is positioned at a water supply station, the first communication hole (A), the third communication hole (C), the fourth communication hole (D) and the second communication hole (B) are communicated in sequence to form a first flow path;

the flow area of the first communication hole (A) is larger than that of the third communication hole (C) and that of the fourth communication hole (D) is larger than that of the second communication hole (B).

5. The multiway valve according to claim 4, characterized in that the first communication opening (A) communicates with the second communication opening (B) to form a second flow path when the multiway valve (20) is in the remaining six positions.

6. The multiway valve according to claim 5, characterized in that the first communication hole (A), the fourth communication hole (D), the second communication hole (B) and the third communication hole (C) are sequentially distributed at intervals in the circumferential direction of the valve body (21).

7. The multiway valve according to claim 4, characterized in that the third communication hole (C) and the fourth communication hole (D) are arranged in a ring shape extending in a circumferential direction of the valve body (21).

8. The multiple-way valve according to claim 4, wherein the valve body (21) comprises a seat body (211) and a spool assembly (22), the seat body (211) and the spool assembly (22) together define the valve cavity (25), the valve cavity (25) comprises a flow control portion and a side wall circumferentially surrounding the flow control portion;

the first communicating hole (A) is formed on the side wall, and the second communicating hole (B) is formed on one side of the flow control part far away from the first communicating hole (A); the third communication hole (C) and the fourth communication hole (D) are formed in the flow control portion.

9. The fixed valve plate is characterized in that a plurality of communication holes are formed in the fixed valve plate (221) in a penetrating mode, and any one of the communication holes can be selectively communicated with at least one of the other communication holes to form a flow path;

and the flow area of the communication hole positioned at the most upstream is larger than the flow area of the other communication holes in the water flow direction of the flow path.

10. The stationary blade according to claim 9, wherein the communication hole has a flow area gradually decreasing in a water flow direction of the flow path.

11. The fixed valve plate according to claim 10, wherein the communication holes include a first communication hole (a) and a second communication hole (B), a third communication hole (C) and a fourth communication hole (D);

when the multi-way valve (20) is positioned at a water supply station, the first communication hole (A), the third communication hole (C), the fourth communication hole (D) and the second communication hole (B) are communicated in sequence to form a first flow path;

the flow area of the first communication hole (A) is larger than that of the third communication hole (C) and that of the fourth communication hole (D) is larger than that of the second communication hole (B).

12. Water softener, characterized in that it comprises a multiway valve (20) according to any of claims 1 to 8 or a fixed valve plate (221) according to claims 9-11.

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