CN217328666U

CN217328666U - Waste water solenoid valve and water purifier

Info

Publication number: CN217328666U
Application number: CN202220150169.5U
Authority: CN
Inventors: 孙济鹏; 郑跃东; 周军; 汤诗槐
Original assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Current assignee: Foshan Midea Qinghu Water Purification Equipment Co ltd; Midea Group Co Ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-08-30
Anticipated expiration: 2032-01-19

Abstract

The utility model discloses a wastewater solenoid valve and a water purifier, wherein the wastewater solenoid valve comprises a valve body and a flow limiting piece, the valve body is provided with a water inlet flow passage and a water outlet flow passage, the water inlet flow passage is provided with a water inlet connecting pipe connected with a wastewater pipeline, and the water outlet flow passage is provided with a water outlet connecting pipe communicated with the wastewater pipeline; the flow limiting piece is arranged on the valve body, a flow limiting flow channel communicated with the water inlet flow channel and the water outlet flow channel is arranged on the flow limiting piece, the flow limiting flow channel comprises a water inlet communicated with the water inlet flow channel and a water outlet communicated with the water outlet flow channel, and the distance between the water inlet and the water outlet is smaller than the length of the flow limiting flow channel. The utility model discloses waste water solenoid valve can realize bigger restriction area when reaching the same waste water flow, can prevent effectively that waste water solenoid valve from blockking up to prolong waste water solenoid valve's life. Meanwhile, a longer current-limiting flow channel and a larger current-limiting area can be arranged in the same valve body space to better buffer the impact force of waste water, so that the noise is reduced, and the comfort level of a user is improved.

Description

Waste water solenoid valve and water purifier

Technical Field

The utility model relates to a solenoid valve technical field, in particular to waste water solenoid valve and water purifier.

Background

With the improvement of living standard, the requirement of people on the quality of drinking water is higher and higher. Various water purifiers are available in the market, which are installed on water supply pipelines to filter and purify tap water for people to drink. The reverse osmosis water purifier is more and more popular because the purified water produced by the reverse osmosis water purifier is filtered more thoroughly, more sanitary and safer.

The core component of the reverse osmosis water purifier is a reverse osmosis filter element. The raw water is filtered by the reverse osmosis membrane to generate pure water and waste water according to the proportion. The pure water is conveyed to a water taking end through a pure water pipeline for a user to take; the waste water is discharged through a waste water pipeline. In the relative technical field, can install the waste water solenoid valve on the waste water pipeline, current waste water solenoid valve is through setting up the hole in less aperture, comes control waste water ratio, the waste water that produces when can discharging water at any time simultaneously. However, the waste water electromagnetic valve with a smaller aperture is easy to block a valve body in a region with higher total soluble solid content, so that the service life of the whole waste water electromagnetic valve is shortened, and the maintenance cost is high.

The above is only for the purpose of assisting understanding of the technical solution of the present invention, and does not represent an admission that the above is the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a waste water solenoid valve, the technical problem that the valve body blockked up takes place easily for the waste water solenoid valve who aims at solving current less aperture.

In order to achieve the above object, the utility model provides a waste water solenoid valve includes:

the valve body is provided with a water inlet flow passage and a water outlet flow passage, the water inlet flow passage is provided with a water inlet connecting pipe connected with a waste water pipeline, and the water outlet flow passage is provided with a water outlet connecting pipe communicated with the waste water pipeline; and

the flow limiting piece is arranged on the valve body, a flow limiting flow channel communicated with the water inlet flow channel and the water outlet flow channel is arranged on the flow limiting piece, the flow limiting flow channel comprises a water inlet communicated with the water inlet flow channel and a water outlet communicated with the water outlet flow channel, and the distance between the water inlet and the water outlet is smaller than the length of the flow limiting flow channel.

In one embodiment, the relationship between the waste flow Q in the waste solenoid valve and the length l of the restricted flow channel is:

wherein Δ p is a pressure difference between the water inlet and the water outlet;

rho is the density of wastewater in the wastewater valve, S is the flow area of the wastewater in the wastewater electromagnetic valve, k1 is the on-way resistance coefficient of the valve body, ζ is the local resistance coefficient of the wastewater electromagnetic valve, λ is the wall surface friction coefficient of the flow-limiting flow passage, and d is the inner diameter of the flow-limiting piece.

In one embodiment, the ratio of the inner diameter d of the flow restriction to the length l of the flow restriction flow channel is greater than or equal to 0.014.

In one embodiment, a water inlet hole and a water outlet hole are formed in one side of the valve body, and the water inlet hole is formed in the water inlet flow channel and is communicated with the water inlet; the water outlet hole is formed in the water outlet flow channel and communicated with the water outlet.

In an embodiment, the flow-limiting member further comprises a water inlet connecting channel and a water outlet connecting channel, the water inlet connecting channel is used for communicating the water inlet with the water inlet channel, and the water outlet connecting channel is used for communicating the water outlet with the water outlet channel.

In an embodiment, the waste water solenoid valve further comprises an end cover, the end cover covers one side of the valve body to form an installation cavity, and the flow limiting piece is arranged in the installation cavity.

In one embodiment, the ratio between the maximum length lmax of the flow-limiting flow passage and the structural depth H and the diameter D of the mounting cavity is:

wherein d1 is the outer diameter of the flow restriction.

In one embodiment, the flow-restricting passages are at least partially arranged in a spiral stack or in a reciprocating stack.

In an embodiment, a distance between the water inlet and the bottom of the installation cavity is smaller than a distance between the water outlet and the bottom of the installation cavity.

In one embodiment, the valve body further comprises an inner cavity and an outer cavity, the outer cavity is circumferentially arranged outside the inner cavity, the water inlet channel is communicated with the outer cavity, the water outlet channel is communicated with the inner cavity, and the flow limiting piece is communicated with the inner cavity and the outer cavity.

In one embodiment, the diameter of the water inlet is equal to the diameter of the water outlet.

In one embodiment, the flow restriction member is fixedly connected to the cavity bottom of the installation cavity through a screw.

The utility model also provides a water purifier, which comprises the wastewater electromagnetic valve, wherein the wastewater electromagnetic valve comprises a valve body and a flow limiting piece, and the valve body is provided with a water inlet flow passage and a water outlet flow passage; the flow limiting piece is arranged on the valve body, a flow limiting flow channel communicated with the water inlet flow channel and the water outlet flow channel is arranged on the flow limiting piece, the flow limiting flow channel comprises a water inlet communicated with the water inlet flow channel and a water outlet communicated with the water outlet flow channel, and the distance between the water inlet and the water outlet is smaller than the length of the flow limiting flow channel.

The waste water electromagnetic valve of the utility model comprises a valve body and a flow limiting piece, wherein the valve body is provided with a water inlet flow passage and a water outlet flow passage; the flow limiting piece is arranged on the valve body, a flow limiting flow channel communicated with the water inlet flow channel and the water outlet flow channel is arranged on the flow limiting piece, the flow limiting flow channel comprises a water inlet communicated with the water inlet flow channel and a water outlet communicated with the water outlet flow channel, and the distance between the water inlet and the water outlet is smaller than the length of the flow limiting flow channel. So, through setting up the current-limiting piece replaces current aperture throttle, the current-limiting piece can be through the equivalent diameter of its cross section of increase, increase current-limiting area promptly to can effectually prevent that waste water from flowing through impurity ion scale deposit or other impurity in the waste water blocks up the current-limiting runner during the current-limiting piece, and then can avoid the waste water solenoid valve to take place to block up, improve the life of waste water solenoid valve reduces water purifier cost of maintenance. Simultaneously, the same place can be through passing through the flow-limiting runner through the spiral disk under the volume of valve body in the valve body to can realize littleer realize holding longer flow-limiting runner and bigger current-limiting area in the valve body space, longer flow-limiting runner and bigger current-limiting area can realize buffering waste water impact force, thereby reduce the noise that the waste water solenoid valve produced, promote user's comfort level.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of the waste water solenoid valve of the present invention;

FIG. 2 is a front view of another embodiment of the waste water solenoid valve of FIG. 1;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is an exploded view of the waste water solenoid valve of FIG. 1;

FIG. 5 is a schematic structural view of the valve body of FIG. 4;

FIG. 6 is a schematic view of the valve body of FIG. 5 from another perspective;

FIG. 7 is a front view of the valve body of FIG. 4;

FIG. 8 is a cross-sectional view taken at B-B of FIG. 7;

FIG. 9 is a schematic view of the structure of the flow restrictor of FIG. 4;

FIG. 10 is a front view of the flow restrictor of FIG. 4;

FIG. 11 is a cross-sectional view at C-C of FIG. 10;

FIG. 12 is a schematic view of the valve body and restrictor assembly of FIG. 4;

FIG. 13 is a cross-sectional view taken at D-D of FIG. 12;

FIG. 14 is an exploded view of another embodiment of the waste water solenoid valve of the present invention;

FIG. 15 is a schematic view of the structure of the flow restrictor of FIG. 14;

fig. 16 is a schematic view of the flow restriction of fig. 15 from another perspective.

The reference numbers indicate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The water purifier generally comprises a composite filter element assembly, a booster pump, a wastewater electromagnetic valve and the like, and different devices, such as a temperature sensor, can be additionally arranged according to the requirements to control the temperature of purified water; or an oxygen generator for adding oxygen to the purified water to make the purified water rich in oxygen, etc., and the oxygen generator is not particularly limited herein.

The composite filter element component can be composed of a plurality of independent filter elements, or is formed by compounding a plurality of layers of different filter layers, different filter element layers can be arranged as required, such as a PP cotton layer, a front activated carbon layer, a super permeable membrane layer, an RO reverse osmosis membrane layer, a rear activated carbon layer and the like, and of course, each filter layer can be independently arranged as an independent unit as required. The PP cotton layer can reduce the turbidity, the chromaticity, macroscopic impurities and the like of raw water when the raw water is filtered; the preposed activated carbon layer has adsorption capacity, so that the oxygen consumption, the turbidity and the like of raw water can be reduced; the super-permeable membrane also has adsorption capacity, and can effectively reduce the turbidity of water, macroscopic impurities, raw water oxygen consumption and the like; the RO reverse osmosis membrane layer can effectively reduce the total soluble solids of water, remove bacteria, reduce heavy metal pollutants such as arsenic, chromium and the like, and ensure that raw water can reach the standard water purification which can be cited by human bodies; and the rear active carbon layer removes peculiar smell mixed with raw water so as to make the purified water more fresh.

The RO reverse osmosis membrane in the multi-layer filter layer is a core filter element of the reverse osmosis water purifier, and the water generally flows from low concentration to high concentration, and after the water is pressurized, the water can flow from high concentration to low concentration, namely, the reverse osmosis principle. Because the aperture of the RO membrane is five parts per million (0.0001 micron) of hair, bacteria and viruses can not be seen by naked eyes generally, and are 5000 times of the bacteria and viruses, only water molecules and partial mineral ions beneficial to human bodies can pass through, and other impurities and heavy metals are removed by a waste water pipe connected with the RO reverse osmosis membrane.

In order to make water molecules permeate from high-concentration raw water to low-concentration purified water, the raw water side is often pressurized, so that the water molecules can permeate to the purified water side under the action of pressure, so as to obtain more purified water. And in order to better control the wastewater ratio of the water purifier, the ratio of the quantity of wastewater generated by one cup of purified water is obtained. The waste water electromagnetic valve can control the waste water ratio by controlling the flow of the waste water.

The waste water electromagnetic valve installed on the waste water pipe controls the flow of waste water flowing from the waste water electromagnetic valve by setting a small throttle area, thereby controlling the waste water ratio, but because the waste water ratio is controlled by setting the small throttle area, the waste water after filtering contains a large amount of mineral ions, the impurity ions in the waste water are easy to scale at the position with the small throttle area, thereby blocking the waste water flow passage, causing the blockage of the waste water valve and shortening the service life of the whole waste water electromagnetic valve.

The specific structure of the waste water solenoid valve will be mainly described below.

In the embodiment of the present invention, as shown in fig. 1 to 4, the waste water solenoid valve 10 includes a valve body 11 and a flow limiting member 12, the valve body 11 has a water inlet channel 111 and a water outlet channel 112, the water inlet channel 111 is provided with a water inlet connection pipe 111a connected to a waste water pipe, the water outlet channel 112 is provided with a water outlet connection pipe 112a communicated with the waste water pipe; the flow limiting element 12 is disposed on the valve body 11, the flow limiting element 12 is provided with a flow limiting flow channel 121 communicating the water inlet flow channel 111 and the water outlet flow channel 112, the flow limiting flow channel 121 includes a water inlet 122 communicating with the water inlet flow channel 111 and a water outlet 123 communicating with the water outlet flow channel 112, and a distance between the water inlet 122 and the water outlet 123 is smaller than a length of the flow limiting flow channel 121.

Particularly, in the embodiment of the present invention, the waste water solenoid valve 10 includes the valve body 11, be equipped with the water inlet channel 111 on the valve body 11, the water inlet channel 111 includes the water inlet pipe 111a, the water inlet pipe 111a is located the periphery side of the valve body 11, the water inlet pipe 111a is used for with the waste water solenoid valve 10 is connected into the waste water pipeline to introduce waste water into the waste water solenoid valve 10. The waste water solenoid valve 10 is further provided with a water outlet pipeline, the water outlet channel 112 includes a water outlet connection pipe 112a, the water outlet connection pipe 112a is also disposed on the outer peripheral side of the waste water solenoid valve 10, wherein the water outlet connection pipe 112a and the water inlet connection pipe 111a may be disposed on two sides of the waste water solenoid valve 10 opposite to each other, or the water outlet connection pipe 112a and the water inlet connection pipe 111a are disposed on the same side of the waste water solenoid valve 10, which is not particularly limited herein. In this application, outlet conduit with inlet conduit set up in the homonymy of valve body 11 can reduce like this waste water solenoid valve 10's volume can be convenient simultaneously waste water solenoid valve 10's installation. Meanwhile, in order to improve the connection tightness of the waste water solenoid valve 10, sealing washers may be provided on the water inlet connection pipe 111a and the water outlet connection pipe 112a, so that the connection tightness of the waste water solenoid valve 10 and a waste water pipe may be improved. The water inlet connection pipe 111a may be integrally formed with the valve body 11, and of course, the water inlet connection pipe 111a may also be separately formed (for example, detachably connected) with the valve body 11. The water outlet connection pipe 112a may be integrally formed with the valve body 11, and of course, the water outlet connection pipe 112a may also be separately formed (for example, detachably connected) with the valve body 11. And is not particularly limited herein.

In the embodiment of the present invention, the waste water solenoid valve 10 further includes a flow limiting member 12, and the structure of the flow limiting member 12 may be different structural forms. Alternatively, the flow restriction 12 may be disposed in a tubular shape, a plate shape, a column shape, or other shapes, and the like, and is not limited herein. For the convenience of forming, in the embodiment of the present invention, the flow-limiting member 12 is disposed in a tubular shape for illustration, and is not intended to limit the present application.

The flow limiting piece 12 is provided with a flow limiting flow passage 121 for communicating the water inlet flow passage 111 and the water outlet flow passage 112 on the valve body 11, in order to facilitate communication between the flow limiting piece 12 and the valve body 11, the flow limiting flow passage 121 is provided with a water inlet 122 communicated with the water inlet flow passage 111 and a water outlet 123 communicated with the water outlet flow passage 112, and the shapes and sizes of the water inlet 122 and the water outlet 123 can be set according to the sizes and shapes of the water inlet flow passage 111 and the water outlet flow passage 112. It is understood that, in the present application, the flow restriction 12 and the valve body 11 may be integrally formed, and of course, the flow restriction 12 and the valve body 11 may be separately formed (for example, detachably connected). However, in order to save production cost and processing steps, the flow restriction member 12 is detachably connected to the valve body 11 in the present application. The flow restriction 12 and the valve body 11 may be connected in various manners, and optionally, the flow restriction 12 may be connected with the valve body 11 in a manner of interference connection, adhesion, welding, or the like, which is not limited herein.

It is worth mentioning that the existing wastewater electromagnetic valve 10 controls the wastewater flow to discharge through a small hole, thereby achieving the purpose of controlling the wastewater ratio. In the embodiment of the present invention, the distance between the water inlet 122 and the water outlet 123 is smaller than the length of the flow-limiting channel 121, that is, the length of the flow-limiting channel 121 of the flow-limiting member 12 is increased to slow down the flow speed of the waste water to control the waste water ratio, that is, the on-way resistance and the local resistance of the waste water in the flow-limiting channel 121 are increased in the form of throttling the small hole after the waste water flows into the flow-limiting channel 121, so that the flow of the waste water flowing out from the flow-limiting member 12 can be controlled in the same time as the flow of the waste water flowing out from the small hole in the same time, and the control of the waste water ratio is realized. However, the orifice restriction is easily blocked, and in the application, the flow rate of the wastewater can be controlled by increasing the length of the flow restriction flow passage 121, and meanwhile, the effective diameter of the cross section of the flow restriction element 12 is increased to achieve better anti-blocking effect.

Simultaneously, because this application is through setting up current-limiting piece 12, in order to right waste water solenoid valve 10 is controlling waste water when making water the speed that waste water solenoid valve 10 flowed out to reach the purpose of control waste water ratio, control waste water ratio for the aperture throttle, this application can be through with current-limiting piece 12 is in the length of current-limiting runner 121 is increased through the form of space winding in the valve body 11, thereby control waste water that can be better, simultaneously, can utilize longer current-limiting runner 121 to slow down the impact force of waste water, thereby reduce the velocity of flow of waste water in valve body 11, in order to reach and reduce the acoustic power, and then reduce the noise value, realize noise reduction effect, improve user's comfort level.

Specifically, when the waste water electromagnetic valve 10 is in a closed state, waste water passes through the flow limiting flow channel 121 or the orifice or belongs to a jet flow, and the acoustic power of the jet flow is calculated by the following formula:

wherein ρ is the density of the wastewater in the wastewater solenoid valve 10, S is the cross-sectional area of the jet outlet, K is a constant, ρ is the flow velocity of the jet outlet, and c is the medium sound velocity.

It can be understood that when the waste water solenoid valve 10 is in the water making state and waste water is at the orifice or the outlet of the flow restriction 12 in this application, the waste water is in the jet flow state, and it can be derived from the above relation that the acoustic power of the jet flow is proportional to the 8 th power of the cross-sectional flow velocity of the jet flow outlet, so that it can be known that the larger the flow velocity of the waste water in the valve body 11 is, the larger the acoustic power thereof is, and the larger the noise value thereof is. The cross-sectional area of the flow-limiting channel 121 in the present application is much larger than the aperture of the orifice in the existing orifice throttling, so the flow speed of the waste water in the flow-limiting channel 121 is smaller than that of the waste water in the orifice throttling. And then under the condition of the same waste water ratio, this application is through the increase the impact force that the waste water was cushioned to the current-limiting area of current-limiting piece 12 and the length of extension current-limiting runner 121 to can reduce the noise value, realize the noise reduction effect, improve user's comfort level.

The waste water electromagnetic valve 10 of the utility model comprises a valve body 11 and a flow limiting piece 12, wherein the valve body 11 is provided with a water inlet flow passage 111 and a water outlet flow passage 112; the flow limiting element 12 is disposed on the valve body 11, a flow limiting flow channel 121 communicating the water inlet flow channel 111 and the water outlet flow channel 112 is disposed on the flow limiting element 12, the flow limiting flow channel 121 includes a water inlet 122 communicating with the water inlet flow channel 111, and a water outlet 123 communicating with the water outlet flow channel 112, and a distance between the water inlet 122 and the water outlet 123 is smaller than a length of the flow limiting flow channel 121. So, through setting up current orifice throttling is replaced to current-limiting piece 12, current-limiting piece 12 can be through the equivalent diameter of its cross section of increase, increase current-limiting area promptly to can effectually prevent that waste water from flowing through impurity ion scale deposit or other impurity in the waste water blocks up current-limiting runner 121 during current-limiting piece 12, and then can avoid waste water solenoid valve 10 to take place to block up, improve waste water solenoid valve 10's life reduces water purifier cost of maintenance. Meanwhile, under the same condition of the volume of the valve body 11, the flow-limiting flow channel 121 can be rotated into the valve body 11 through a spiral disc, so that a longer flow-limiting flow channel 121 and a larger flow-limiting area can be accommodated in a smaller space of the valve body 11, and the longer flow-limiting flow channel 121 and the larger flow-limiting area can buffer the impact force of wastewater, thereby reducing the noise generated by the wastewater solenoid valve 10 and improving the comfort of a user.

In some embodiments, the fluid pressure loss may be calculated according to the fluid pressure loss equation:

deducing the relation between the wastewater flow Q in the wastewater solenoid valve 10 and the length l of the restricted flow channel 121 as follows:

wherein Δ p is a pressure difference between the water inlet 122 and the water outlet 123;

rho is the density of the wastewater in the wastewater solenoid valve 10, S is the flow area of the wastewater in the wastewater solenoid valve 10, and k is ₁ Zeta is the local resistance coefficient of the waste water solenoid valve 10, lambda is the wall friction coefficient of the flow-limiting flow passage 121, and d is the inner diameter of the flow-limiting member 12.

As can be seen from the above relation, the flow rate Q of wastewater in the wastewater solenoid valve 10 is inversely proportional to the length l of the restricted flow path 121, and the longer the length l of the restricted flow path 121 is, the smaller the flow rate Q of wastewater in the wastewater solenoid valve 10 is. Therefore, the waste water ratio can be controlled by controlling the length l of the flow limiting channel 121, and then better anti-blocking and noise reduction effects can be realized by increasing the flow limiting area under the condition of the same waste water ratio.

In some embodiments, the ratio of the inner diameter d of the flow restriction 12 to the length l of the flow restriction flow path 121 is greater than or equal to 0.014. It is understood that the larger the inner diameter d of the flow restriction member 12 is, the better the anti-blocking effect is, but the larger the flow rate of wastewater flowing through the flow restriction flow path 121 at the same time is, and the longer the length of the flow restriction flow path 121 is, the easier the wastewater ratio control is, but the more assembly space is required, and in order to better control the wastewater ratio and achieve the better anti-blocking effect, the ratio of the inner diameter d of the flow restriction member 12 to the length l of the flow restriction flow path 121 may be set to be greater than or equal to 0.014.

Same waste water flow, different throttle forms current-limiting area contrast:

form of throttling	Flow path/mm	Throttle area/mm ²	Ratio to orifice flow area
				Orifice throttling	/	0.38	1
Flow restriction throttle	70	0.78	2

For example, under the condition that the flow rate of the same waste water is 400-500 ml/min, the throttling area of the small hole is 0.38mm under the condition that the diameter of the small hole for throttling the required hole is about 0.7mm ² . In order to realize anti-blocking, the current limiting area can be increased by about two times, namely 0.78mm ² That is, the equivalent diameter of the restriction flow path 121 is about 1mm, and the length of the restriction flow path 121 is set to 70mm, that is, the ratio between the equivalent diameter of the restriction flow path 121 and the length of the restriction flow path 121 is about 0.014. Thereby, the wastewater ratio can be controlled by controlling the ratio of the equivalent diameter of the flow limiting channel 121 to the length of the flow limiting channel 121 under the condition of the same flow rate.

As shown in fig. 5 and 6, in an embodiment, a water inlet 111b and a water outlet 112b are disposed on one side of the valve body 11, and the water inlet 111b is disposed on the water inlet flow passage 111 and is communicated with the water inlet 122; the water outlet hole 112b is disposed on the water outlet channel 112 and is communicated with the water outlet 123. It should be understood that, when the flow restriction member 12 and the valve body 11 are provided in a split type, in order to facilitate connection between the flow restriction member 12 and the valve body 11, the flow restriction member 12 and the valve body 11 may be communicated with each other, so that the water inlet hole 111b and the water outlet hole 112b may be formed on the same side of the valve body 11, so as to facilitate installation of the flow restriction member 12 and the valve body 11, and optionally, the flow restriction member 12 may be connected with the valve body 11 by interference connection, bonding, welding, or the like, which is not particularly limited herein.

As shown in fig. 10, in an embodiment, the flow limiting member 12 further includes a water outlet connecting channel 121a and a water inlet connecting channel 121b, the water outlet connecting channel 121a is used for communicating the water inlet 122 with the water inlet channel 111, and the water inlet connecting channel 121b is used for communicating the water outlet 123 with the water outlet channel 112. In order to facilitate the connection between the flow restriction member 12 and the water inlet hole 111b and the water outlet hole 112b on the valve body 11, a water outlet connection channel 121a and a water inlet connection channel 121b may be additionally provided at the positions of the water outlet 123 and the water inlet 122, so that the form of the flow restriction member 12 may be changed more conveniently and the flow restriction member 12 and the valve body 11 may be mounted.

As shown in fig. 3 and 4, in an embodiment, the waste water solenoid valve 10 further includes an end cap 13, the end cap 13 covers one side of the valve body 11 to form an installation cavity 113, and the flow restriction member 12 is disposed in the installation cavity 113. As can be seen, one side of the valve body 11 is recessed to form a recess with an opening facing outward. Waste water solenoid valve 10 still includes end cover 13, end cover 13 covers fit on the opening of recess to form a relative sealed installation cavity 113, installation cavity 113 is used for current-limiting piece 12 provides accommodation space, reduces current-limiting piece 12 and external environment's contact, provides the guard action, simultaneously, end cover 13 with valve body 11 open-ended junction is equipped with sealing washer 132 to installation cavity 113 that makes becomes a relative sealed space, can let install like this in installation cavity 113 current-limiting piece 12 reduces by steam or other interference among the operational environment, thereby can prolong waste water solenoid valve 10's life. The end cap 13 and the valve body 11 may be connected by screw-fitting or by a screw 131, and is not particularly limited.

Of course, in other embodiments, the flow restriction member 12 may be disposed outside the valve body 11 or around the valve body 11, and is not limited herein.

Further, the size of the mounting cavity 113 may be set according to the size of the flow restriction 12, and is not particularly limited herein.

In some embodiments, in order to fully utilize the space of the installation cavity 113 and control the volume of the valve body 11 of the waste water solenoid valve 10 not to be too large, the recommended diameter D and depth H of the installation cavity 113 and the outer diameter D1 of the flow restriction 12 are related as follows:

D＝(2*N ₁ +1)*d ₁

H＝N ₂ *d ₁

wherein N1 is a natural number greater than 0, such as 1, 2, 3, 4, 5, etc.;

n2 is a natural number greater than 0, e.g., 1, 2, 3, 4, 5, etc.;

it can be understood from the above relation that the maximum length of the restricted flow path 121 is limited by the depth H and the diameter D of the installation cavity 113. By deducing the maximum length l of the flow-limiting channel 121 _max The ratio of the structural depth H to the diameter D of the installation cavity 113 is:

wherein d is ₁ Is the outer diameter of said restriction 12.

It can be understood that the maximum length l of the restricted flow path 121 _max In close relation to the size of the installation cavity 113, the larger the installation cavity 113, the longer the length of the restricted flow path 121 can be accommodated in principle. The size of the mounting cavity 113 is related to the depth H and the diameter D of the mounting cavity 113, so that the maximum length l of the flow-limiting flow channel 121 that can be set in the mounting cavity 113 given the size of the mounting cavity 113 can be calculated according to the above relationship _max 。

As shown in fig. 12-16, in some embodiments, the flow-restricting flow passage 121 is at least partially disposed in a spiral stack or a reciprocating stack. It will be appreciated that the flow restriction flow path 121 may be formed in a curved shape in order to reduce the overall volume of the flow restriction member 12, thereby achieving a compact configuration of the waste solenoid valve 10, and also to increase the local resistance of waste water within the flow restriction flow path 121. The curved shape allows the flow direction of the wastewater in the flow-restricting flow passage 121 to be changed according to the change of the shape, and the flow-restricting flow passage 121 may be partially arranged in a spiral stacked manner or in a reciprocating stacked manner as required in this application, and is not limited thereto. The flow-limiting flow channel 121 is set to be in a curved shape, so that the local resistance of the waste water on the inner wall of the flow-limiting flow channel 121 can be increased when the flow direction of the waste water is changed, and the purpose of slowing down the flow speed of the waste water is achieved. Specifically, the flow restricting channel 121 is at least partially disposed in a spiral shape. As can be seen from fig. 12, the portion of the flow-limiting channel 121 is configured to have a uniformly varying spiral shape, so that the waste water can be subjected to more uniform on-way resistance and local resistance in the flow-limiting channel 121, thereby better configuring the length of the flow-limiting channel 121 as required to control the waste water ratio. Of course, in other embodiments, as can be seen from fig. 15, the flow-restricting flow passage 121 is at least partially disposed in a reciprocating stacked manner. And is not particularly limited herein.

As shown in fig. 9 to 11, in an embodiment, a distance between the water inlet 122 and a bottom of the installation cavity 113 is smaller than a distance between the water outlet 123 and the bottom of the installation cavity 113. It can be understood that the utility model discloses thereby flow restriction 12 in the embodiment of the invention reaches the purpose of controlling waste water ratio through reducing the velocity of flow of waste water in current-limiting runner 121 to control waste water flow, and can also through with in this application current-limiting runner 121 water inlet 122 sets to be higher than delivery port 123, thereby makes waste water be in water inlet 122 flows towards delivery port 123, owing to will upwards flow, thereby needs customer service gravity to do work, and then consumes the energy of waste water, makes the velocity of flow of waste water descend, thereby can realize shorter current-limiting runner 121 wait to equal waste water ratio.

It should be noted that, in the related art, in order to prolong the service life of the RO reverse osmosis membrane, the waste water solenoid valve 10 is usually set to a flushing mode and a throttling mode, in the throttling mode, water molecules can normally permeate through the RO reverse osmosis membrane to obtain a purified water process, and in the flushing mode, raw water can directly flow through the surface of the raw water side of the RO reverse osmosis membrane to take away residual or accumulated impurities, so that the RO reverse osmosis membrane can normally work. In the cleaning mode, the water inlet channel 111 and the water outlet channel 112 of the valve body 11 need to be directly communicated, so that the waste water can be quickly discharged to achieve the purpose of cleaning.

In the embodiment of the present invention, as shown in fig. 3 and fig. 4, the waste water solenoid valve 10 further includes a solenoid control mechanism 14, the solenoid control mechanism 14 includes a solenoid 141 and a valve core assembly 142, the valve core assembly 142 further includes a core 142a, a pressing plate 142b and a diaphragm 142c, the pressing plate 142b and the diaphragm 142c are disposed at one end of the core 142a, the core 142a is movably disposed in the solenoid 141, the solenoid 141 is used for providing a power device for moving the core 142a, the diaphragm 142c covers one side of the valve body 11, and the pressing plate 142b can press the diaphragm 142 c.

In an embodiment of the present invention, as shown in fig. 3, fig. 6 and fig. 8, the valve body 11 further includes an inner cavity 114 and an outer cavity 115, the outer cavity 115 is circumferentially disposed outside the inner cavity 114, the water inlet channel is communicated with the outer cavity 115, the water outlet channel is communicated with the inner cavity 114, and the flow-limiting member 12 is communicated with the inner cavity 114 and the outer cavity 115. It is understood that an inner cavity 114 and an outer cavity 115 are arranged on the opposite side of the mounting cavity 113 in the valve body 11, the outer cavity 115 is arranged outside the inner cavity 114, a surrounding wall is arranged between the inner cavity 114 and the outer cavity 115 so as to separate the inner cavity 114 from the outer cavity 115, and the same side of the inner cavity 114 and the outer cavity 115 is arranged in an opening way. The diaphragm 142c covers the openings of the inner chamber 114 and the outer chamber 115, so that the inner chamber 114 and the outer chamber 115 form a closed space, and the flow restriction 12 is used for communicating the inner chamber 114 and the outer chamber 115. When the waste water solenoid valve 10 is in the flushing mode, the electromagnetic control mechanism 14 drives the diaphragm 142c to move toward the valve body 11, so that the inner cavity 114 is directly communicated with the outer cavity 115 through the open end, so as to enable waste water to flow out rapidly, and when the waste water solenoid valve 10 is in the throttling mode, waste water can only flow from the outer cavity 115 to the inner cavity 114 through the flow limiting member 12, so as to control the flow rate of waste water, and control the waste water ratio of the waste water solenoid valve 10.

In some embodiments, the diameter of the water inlet 122 is equal to the diameter of the water outlet 123. In order to facilitate the calculation of the on-way resistance and the local resistance of the wastewater in the flow limiting channel 121, and thus facilitate the setting of the length of the flow limiting member 12, the diameter of the water inlet 122 may be equal to the diameter of the water outlet 123, so as to reduce the difference caused by the irregular change of the flow channel. Of course, in other embodiments, the diameter of the water inlet 122 gradually decreases along the direction from the flow-limiting channel 121 to the water outlet 123; or the diameter of the water inlet 122 gradually increases along the direction from the flow-limiting flow passage 121 to the water outlet 123. It is understood that, in order to increase the on-way resistance and the local resistance of the wastewater in the restricted flow path 121, the variation of the restricted flow path 121 may be increased in a direction from the water inlet 122 toward the water outlet 123 of the restricted flow path 121. For example, the diameter of the restricted flow channel 121 from the water inlet 122 to the water outlet 123 may be set to be gradually reduced or gradually increased, so as to increase the frictional resistance or local resistance between the waste water and the pipe wall, thereby achieving a reduction in the flow rate of the waste water.

In another embodiment, as shown in fig. 12 and 13, the flow restriction member 12 is fixedly connected to the bottom of the mounting chamber 113 by screws. It can be understood that, in order to fix the flow restriction member 12, so as to reduce the vibration of the flow restriction member 12 during operation, thereby affecting the connection stability between the flow restriction member 12 and the water inlet flow passage 111 and the water outlet flow passage 112 of the valve body 11, the flow restriction member 12 may be fixedly connected to the cavity bottom of the mounting cavity 113 through screws, so as to reduce the vibration of the flow restriction member 12, so that the connection between the flow restriction member 12 and the water inlet flow passage 111 and the water outlet flow passage 112 of the valve body 11 is more stable, and at the same time, the abnormal sound caused by the vibration may be reduced, thereby improving the user experience. Of course, in other embodiments, the flow restriction 12 may also be fixedly connected to the mounting cavity 113 by interference, adhesion, or welding, and the like, which is not limited herein.

The utility model also provides a water purifier, this water purifier include compound filter element group spare, booster pump and waste water solenoid valve 10, and above-mentioned embodiment is referred to this waste water solenoid valve 10's concrete structure, because this water purifier has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, no longer gives unnecessary details here.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A waste water solenoid valve, comprising:

2. The waste water solenoid valve as claimed in claim 1, wherein the relationship between the waste water flow Q in said waste water solenoid valve and the length l of said restricted flow path is:

rho is the density of the wastewater in the wastewater solenoid valve, S is the flow area of the wastewater in the wastewater solenoid valve, and k is ₁ And the on-way resistance coefficient of the valve body is shown as Zeta, the local resistance coefficient of the wastewater electromagnetic valve is shown as Lambda, the wall surface friction coefficient of the flow limiting flow channel is shown as Lambda, and d is the inner diameter of the flow limiting piece.

3. The waste water solenoid valve as claimed in claim 2, wherein the ratio of the inner diameter d of said flow restriction to the length l of said flow restriction flow path is greater than or equal to 0.014.

4. The waste water solenoid valve as claimed in claim 1, wherein a water inlet hole and a water outlet hole are formed at one side of the valve body, and the water inlet hole is formed on the water inlet flow passage and communicated with the water inlet; the water outlet hole is formed in the water outlet flow channel and communicated with the water outlet.

5. The waste water solenoid valve as claimed in claim 4, wherein said flow restriction further comprises a water inlet connection channel for communicating said water inlet with said water inlet channel and a water outlet connection channel for communicating said water outlet with said water outlet channel.

6. The waste water solenoid valve as claimed in claim 5, further comprising an end cap covering one side of the valve body to form a mounting cavity, wherein the flow restriction is disposed in the mounting cavity.

7. The waste water solenoid valve as set forth in claim 6, wherein the maximum length l of the restricted flow path _max And the ratio of the structural depth H to the diameter D of the mounting cavity is as follows:

wherein d is ₁ Is the outer diameter of the restriction.

8. The waste water solenoid valve as claimed in claim 7, wherein said restricted flow path is at least partially disposed in a spiral stack or in a reciprocating stack.

9. The waste water solenoid valve as claimed in claim 6, wherein a distance between said water inlet and a bottom of said installation cavity is smaller than a distance between said water outlet and a bottom of said installation cavity.

10. The waste water solenoid valve as recited in claim 8 wherein said valve body further comprises an inner chamber and an outer chamber, said outer chamber being disposed circumferentially outside said inner chamber, said inlet flow passage being in communication with said outer chamber, said outlet flow passage being in communication with said inner chamber, said flow restrictor being in communication with said inner chamber and said outer chamber.

11. The waste water solenoid valve as set forth in claim 10 wherein said water inlet has a diameter equal to a diameter of said water outlet.

12. The waste water solenoid valve as set forth in claim 9, wherein said flow restriction is fixedly attached to the chamber bottom of said mounting chamber by screws.

13. A water purifier comprising the waste water solenoid valve according to any one of claims 1 to 12.