Solenoid valve and water purifier

Abstract

The utility model discloses an electromagnetic valve and a water purifier. The electromagnetic valve comprises a valve body and a scale inhibition filter material; the valve body is provided with a water inlet runner, a valve cavity and a water outlet runner which are sequentially communicated; the scale inhibition filter material is arranged in the water inlet runner and is used for carrying out scale removal treatment on water flowing into the water inlet runner. The electromagnetic valve can solve the problem that incrustation is prone to being generated in an existing electromagnetic valve.

Description

Technical Field

[0001] The utility model relates to the technical field of water purifiers, in particular to a solenoid valve and a water purifier. Background Art

[0002] Existing water purifiers are installed on water supply pipes to filter and purify tap water for drinking. Reverse osmosis water purifiers are becoming more and more popular because the purified water they produce is more hygienic and safer. The core component of reverse osmosis water purifiers is the reverse osmosis membrane. After the raw water is filtered through the reverse osmosis membrane, pure water and wastewater are produced in proportion. The pure water is transported to the water intake end through the pure water pipeline for users to use, and the wastewater is discharged through the wastewater pipeline.

[0003] In the related art, a solenoid valve is installed on the wastewater pipeline to control the wastewater ratio. However, since the wastewater contains a high concentration of calcium and magnesium ions, the calcium and magnesium ions are easy to crystallize and form scale, which blocks the solenoid valve, thus affecting the service life of the solenoid valve. Utility Model Content

[0004] The main purpose of the utility model is to provide a solenoid valve and a water purifier, aiming to solve the problem that scale is easily generated inside the existing solenoid valve.

[0005] To achieve the above object, the utility model provides a solenoid valve, comprising:

[0006] A valve body having a water inlet channel, a valve cavity and a water outlet channel connected in sequence; and

[0007] The scale-inhibiting filter material is arranged in the water inlet flow channel to remove scale from the water flowing into the water inlet flow channel.

[0008] In one embodiment, the solenoid valve further comprises a first filter screen, which is arranged in the water inlet flow channel and located downstream of the scale-inhibiting filter material;

[0009] Alternatively, the first filter screen is arranged at the connection point between the water inlet flow channel and the valve cavity and is located downstream of the scale-inhibiting filter material.

[0010] In one embodiment, the valve body includes a valve main body and a valve seat, the valve main body is disposed on the valve seat and defines the valve cavity together with the valve seat, the valve seat has the water inlet channel, and the valve seat and the first filter are an integral structure.

[0011] In one embodiment, the first filter screen includes a plurality of first ribs, the plurality of first ribs are disposed in the valve cavity and are arranged in sequence at intervals, and the first ribs are connected to the inner wall of the valve cavity.

[0012] In one embodiment, the first filter screen further includes a plurality of second ribs, which are disposed in the water inlet channel and are arranged in sequence at intervals, the second ribs are connected to the first ribs and the inner wall of the water inlet channel, and the first ribs and the second ribs are arranged in an alternating manner to form a first filter hole.

[0013] In one embodiment, the solenoid valve further comprises a filter plug, wherein the filter plug is arranged in the water inlet flow channel and is located upstream of the scale-inhibiting filter material;

[0014] Alternatively, the water inlet channel has a first water inlet, and the filter plug is arranged at the first water inlet and is located upstream of the scale-inhibiting filter material.

[0015] In one embodiment, the filter plug includes a self-locking portion, which is scalably inserted into the first water inlet of the water inlet channel, and the self-locking portion elastically abuts against the inner wall of the water inlet channel.

[0016] In one embodiment, the self-locking portion includes a self-locking column and a plurality of self-locking ribs, wherein the plurality of self-locking ribs are disposed on the outer peripheral wall of the self-locking column and are arranged in sequence around the circumference of the self-locking column. The outer wall of the self-locking rib is elastically abutted against the inner wall of the water inlet channel, and a second filter hole is formed between any two adjacent self-locking ribs.

[0017] In one embodiment, the self-locking ribs are arranged in an arc shape along the circumference of the self-locking column, and the bending directions of the plurality of self-locking ribs are the same;

[0018] And / or, the width of the self-locking rib increases first and then decreases from an end close to the self-locking column toward an end away from the self-locking column.

[0019] In one embodiment, a guide section is formed at one end of the self-locking portion close to the anti-scaling filter material, and the outer diameter of the guide section is gradually reduced along the water inlet direction of the water inlet channel.

[0020] In one embodiment, the valve chamber has a high-pressure chamber connected to the water inlet channel, a low-pressure chamber connected to the water outlet channel, a valve port connected to the high-pressure chamber and the low-pressure chamber, and a throttle hole connected to the high-pressure chamber and the water outlet channel, and the throttle hole is arranged outside the low-pressure chamber;

[0021] The solenoid valve further comprises a valve core, which is movably disposed in the valve cavity and is used to open or close the valve port so as to connect or disconnect the high-pressure cavity and the low-pressure cavity.

[0022] In one embodiment, the aperture of the throttling hole is D1, and D1 satisfies: 0.3mm≤D1≤2mm.

[0023] The utility model also provides a water purifier, which comprises the solenoid valve as described above.

[0024] The solenoid valve of the utility model comprises a valve body and a scale-inhibiting filter material. The valve body has an inlet flow channel, a valve cavity and an outlet flow channel which are connected in sequence. The scale-inhibiting filter material is arranged in the inlet flow channel to remove scale from the water flowing into the inlet flow channel. In this arrangement, the liquid flowing into the solenoid valve flows through the inlet flow channel, the valve cavity and the outlet flow channel in sequence and is discharged outward. When wastewater flows into the inlet channel, the scale-inhibiting filter material can hinder the formation of crystals of calcium and magnesium ions in the wastewater, thereby reducing the speed of scale precipitation in the valve body, thereby solving the problem that scale is easily generated inside the solenoid valve and improving the service life of the solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 This is a schematic structural diagram of an embodiment of a solenoid valve of the utility model;

[0027] Figure 2 for Figure 1 A cross-sectional view of a part of the structure;

[0028] Figure 3 for Figure 1 A cross-sectional view of a part of the structure;

[0029] Figure 4 for Figure 1 A cross-sectional view of the structure in FIG.

[0030] Figure 5 for Figure 1 A cross-sectional view of a part of the structure;

[0031] Figure 6 for Figure 1 A schematic diagram of the structure of the filter plug;

[0032] Figure 7 for Figure 6 A schematic diagram of the structure from another perspective;

[0033] Figure 8 for Figure 2 Schematic diagram of the structure of the valve seat;

[0034] Fig. 9 for Figure 8 A cross-sectional view of the structure in FIG.

[0035] Description of Figure Numbers:

[0036]

[0037]

[0038] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0042] The utility model provides a solenoid valve and a water purifier comprising the solenoid valve. Scale is not easily formed inside the solenoid valve.

[0043] See also Figures 1 to 4In one embodiment of the solenoid valve of the utility model, the solenoid valve includes a valve body 100 and a scale-inhibiting filter material 200. The valve body 100 has an inlet channel 110, a valve chamber 120 and an outlet channel 130 which are connected in sequence; the scale-inhibiting filter material 200 is arranged in the inlet channel 110 to remove scale from the water flowing into the inlet channel 110.

[0044] It is understandable that the solenoid valve of the present application is applied to a water purifier, and of course the solenoid valve can also be applied to other equipment, which is not specifically limited here. When the solenoid valve is applied to a water purifier, the solenoid valve can be installed on the raw water pipeline, and of course it can also be installed on the waste water pipeline. In other words, in addition to controlling the amount of raw water, the solenoid valve of the present application can also be used as a waste water solenoid valve to control the waste water ratio, and the specific use scenario is not limited here.

[0045] Furthermore, when liquid flows through the solenoid valve, the liquid first flows into the water inlet channel 110 of the valve body 100, and the present solution arranges the scale-inhibiting filter material 200 in the water inlet channel 110, so that the scale-inhibiting filter material 200 can immediately descale the liquid flowing into the solenoid valve, thereby ensuring that the liquid flowing into the valve cavity 120 and the water outlet channel 130 is not easy to form scale, reducing the risk of scale formation in the solenoid valve and clogging the solenoid valve, especially reducing the speed at which calcium and magnesium ions in the wastewater crystallize to form scale when the wastewater flows into the solenoid valve, so that scale is not easy to form in the solenoid valve.

[0046] Furthermore, the anti-scaling filter material 200 can be a single filter material with anti-scaling function, or a composite of the anti-scaling filter material 200 and one or more materials with residual chlorine removal function and filter elements with purification function such as PP and PAC, or a composite material combined with one or more effective ingredients such as fragrance, essential oil, and moisturizing, and there is no specific limitation on its composite method and functional type. For example, the anti-scaling filter material 200 prevents the formation of scale by conversion and dissolution, and the calcium and magnesium ions with high hardness are converted into harmless, non-adhesive microscopic crystals through catalytic reaction to achieve the anti-scaling effect.

[0047] Specifically in this embodiment, the scale-inhibiting filter material 200 changes the particle structure and crystal growth mode in the scale formation process by means of adsorption, complexation and ion exchange, thereby inhibiting the formation and accumulation of scale. The scale-inhibiting filter material 200 in this embodiment includes organic phosphorus, polyacid, carboxylic acid, oxidant, etc.; or, the scale-inhibiting filter material 200 in this embodiment is silicon phosphorus crystal.

[0048] The solenoid valve of the utility model comprises a valve body 100 and a scale-inhibiting filter material 200. The valve body 100 has an inlet channel 110, a valve cavity 120 and an outlet channel 130 which are connected in sequence. The scale-inhibiting filter material 200 is arranged in the inlet channel 110 to remove scale from the water flowing into the inlet channel 110. With such arrangement, the liquid flowing into the solenoid valve flows through the inlet channel 110, the valve cavity 120 and the outlet channel 130 in sequence and is then discharged outward. When wastewater flows into the inlet channel, the scale-inhibiting filter material 200 can hinder the crystallization of calcium and magnesium ions in the wastewater, thereby reducing the speed at which scale is precipitated in the valve body 100, thereby solving the problem of easy scale generation inside the solenoid valve and improving the service life of the solenoid valve.

[0049] See also Figure 2 and Figure 4 In one embodiment, the solenoid valve further includes a first filter screen 300, which is disposed in the water inlet channel 110 and downstream of the anti-scaling filter material 200; or, the first filter screen 300 is disposed at the connection point between the water inlet channel 110 and the valve chamber 120 and downstream of the anti-scaling filter material 200.

[0050] It is understandable that the first filter screen 300 can be entirely disposed in the water inlet channel 110, or part of the first filter screen 300 can be disposed in the water inlet channel 110, and another part of the first filter screen 300 can be disposed in the valve chamber 120, and the specific details are not limited here. By arranging the first filter screen 300 downstream of the scale-inhibiting filter material 200, the first filter screen 300 can not only filter large particles of impurities in the liquid, but also block the scale-inhibiting filter material 200. In addition, the specific type and shape of the scale-inhibiting filter material 200 are not limited. The connection method between the first filter screen 300 and the valve body 100 can be a detachable connection, or the first filter screen 300 and the valve body 100 can be integrally formed, and the specific details are not limited here.

[0051] In one embodiment, the pore size of the mesh of the first filter screen 300 is smaller than the particle size of the scale-inhibiting filter material 200, so that the scale-inhibiting filter material 200 cannot pass through the mesh of the first filter screen 300 and flow into the valve cavity 120 and the water outlet channel 130 and leak out of the valve body 100, thereby ensuring the stability of the scale-inhibiting filter material 200 installed in the water inlet channel 110.

[0052] In one embodiment, the valve body 100 includes a valve body and a valve seat 140, the valve body is disposed on the valve seat 140 and defines the valve cavity 120 with the valve seat 140, the valve seat 140 has the water inlet channel 110, and the valve seat 140 and the first filter screen 300 are an integral structure. It is understandable that the valve seat 140 and the first filter screen 300 can be integrally injection molded, which reduces the assembly process of the first filter screen 300, does not add additional parts to the solenoid valve, and is easy to assemble, thereby optimizing the structure of the solenoid valve and reducing the manufacturing cost.

[0053] See also Figure 4 and Figure 5 In one embodiment, the first filter screen 300 includes a plurality of first ribs 310 , which are disposed in the valve cavity 120 and arranged in sequence at intervals, and the first ribs 310 are connected to the inner wall of the valve cavity 120 .

[0054] It is understandable that the first rib 310 can be extended in the up-down direction. Of course, the first rib 310 can also form an angle with the up-down direction, which is not specifically limited here. In this embodiment, the first rib 310 extends in the up-down direction in the valve cavity 120, and the first rib 310 is connected to the inner side wall of the valve cavity 120 and the bottom wall of the valve cavity 120. This not only makes it easy to demold the first rib 310 in the up-down direction to simplify the structure of the mold, but also improves the connection strength between the first rib 310 and the inner wall of the valve cavity 120, thereby improving the installation stability of the first filter screen 300.

[0055] See also Figure 4 and Figure 5 In one embodiment, the first filter screen 300 further includes a plurality of second ribs 320, which are disposed in the water inlet channel 110 and are arranged in sequence at intervals, the second ribs 320 are connected to the first ribs 310 and the inner wall of the water inlet channel 110, and the first ribs 310 and the second ribs 320 are arranged in a staggered manner to form a first filter hole 330.

[0056] It is understandable that the second rib 320 can be extended in the horizontal direction, or the second rib 320 forms an angle with the horizontal direction, which is not limited here. In this embodiment, the second rib 320 extends in the horizontal direction in the water inlet channel 110, and both ends of the second rib 320 are connected to the inner wall of the water inlet channel 110, and the second rib 320 is also connected to the plurality of first ribs 310. Such an arrangement facilitates the molding and demoulding of the second rib 320, and also improves the connection strength of the second rib 320, so that the first filter screen 300 can withstand a large water pressure without falling off and separating from the valve body 100, thereby improving the installation stability of the first filter screen 300.

[0057] Furthermore, the number of the first ribs 310 and the second ribs 320 is not limited, and is specifically arranged according to the size of the solenoid valve and the structure of the anti-scaling filter material 200. The first ribs 310 and the second ribs 320 are arranged in a staggered manner, and the gaps between the multiple first ribs 310 and the multiple second ribs 320 form the first filter holes 330. The size and shape of the holes of the first filter screen 300 are not limited, and it is only necessary to be able to allow water to flow through and to intercept large particles of impurities and anti-scaling filter material 200.

[0058] See also Figure 2 , Figure 4 and Figure 6 In one embodiment, the solenoid valve also includes a filter plug 400, which is disposed in the water inlet channel 110 and upstream of the scale-inhibiting filter material 200; or, the water inlet channel 110 has a first water inlet, and the filter plug 400 is disposed at the first water inlet and upstream of the scale-inhibiting filter material 200.

[0059] It can be understood that the filter plug 400 can be completely arranged in the water inlet channel 110, or, a part of the filter plug 400 is arranged in the water inlet channel 110 of the valve body 100, and the other part of the filter plug 400 is arranged outside the valve body 100, that is, part of the filter plug 400 can be arranged outside the first water inlet, so that it is convenient to install and disassemble the filter plug 400. The specific position of the filter plug 400 is not limited here, and the filter plug 400 only needs to be arranged upstream of the scale-inhibiting filter material 200.

[0060] By arranging the filter plug 400 upstream of the scale-preventing filter material 200, the filter plug 400 can not only filter the large particles of impurities in the liquid upstream of the scale-preventing filter material 200, but also block the scale-preventing filter material 200 to prevent the scale-preventing filter material 200 from flowing out of the first water inlet. In addition, the specific type and shape of the scale-preventing filter material 200 are not limited, and the filter plug 400 can be made of elastic material.

[0061] In one embodiment, the pore size of the filter holes of the filter plug 400 is smaller than the particle size of the scale-inhibiting filter material 200 , so that the scale-inhibiting filter material 200 cannot pass through the filter holes of the filter plug 400 and flow out of the valve body 100 , thereby ensuring the stability of the scale-inhibiting filter material 200 installed in the water inlet channel 110 .

[0062] See also Figure 6 and Figure 7 In one embodiment, the filter plug 400 includes a self-locking portion 410 , which is scalably inserted into the first water inlet of the water inlet channel 110 , and the self-locking portion 410 elastically abuts against the inner wall of the water inlet channel 110 .

[0063] It is understandable that the self-locking part 410 is made of elastic material, so that the self-locking part 410 itself has elasticity. When the filter plug 400 is installed in the first water inlet of the water inlet channel 110, the self-locking part 410 is squeezed and deformed by the inner wall of the water inlet channel 110. The self-locking part 410 elastically abuts against the inner wall of the water inlet channel 110 and is not easy to move, thereby realizing the self-locking function. Among them, when the self-locking part 410 is not subjected to force, the maximum outer diameter of the self-locking part 410 is greater than the inner diameter of the first water inlet of the water inlet channel 110. After the self-locking part 410 is inserted into the first water inlet of the water inlet channel 110, the outer wall of the self-locking part 410 is squeezed and deformed, and the maximum outer diameter of the self-locking part 410 is reduced to be equal to the inner diameter of the first water inlet. The deformation of the self-locking part 410 will generate stress that hinders the self-locking part 410 from moving along the water inlet direction, so that the filter plug 400 has the function of automatic locking.

[0064] See also Figure 6 and Figure 7 In one embodiment, the self-locking portion 410 includes a self-locking column 411 and a plurality of self-locking ribs 412. The plurality of self-locking ribs 412 are arranged on the outer peripheral wall of the self-locking column 411 and are arranged in sequence around the circumference of the self-locking column 411. The outer wall of the self-locking rib 412 is elastically abutted against the inner wall of the water inlet channel 110, and a second filter hole 413 is formed between any two adjacent self-locking ribs 412.

[0065] It can be understood that the self-locking ribs 412 are elastic, and the self-locking columns 411 support the multiple self-locking ribs 412. When the self-locking portion 410 is inserted into the first water inlet, the self-locking ribs 412 are squeezed and deformed by the inner wall of the water inlet channel 110, so that the self-locking ribs 412 elastically abut against the inner wall of the water inlet channel 110 and are not easy to move. The multiple self-locking ribs 412 are dispersedly arranged and all elastically abut against the inner wall of the water inlet channel 110, thereby increasing the stability of self-locking.

[0066] Furthermore, multiple self-locking ribs 412 are arranged in sequence around the circumference of the self-locking column 411 to form multiple second filter holes 413. The multiple second filter holes 413 can disperse the water flow and filter large particles of impurities respectively. The specific size and shape of the second filter holes 413 are not limited here.

[0067] In one embodiment, the self-locking ribs 412 are arranged in an arc shape along the circumference of the self-locking column 411, and the bending direction of the multiple self-locking ribs 412 is the same. In this way, the force direction of the multiple self-locking ribs 412 when squeezed by the inner wall of the water inlet channel 110 is toward the center of the self-locking column 411, and the squeezing force on the multiple self-locking ribs 412 is evenly distributed, which is conducive to improving the stability of self-locking; and the structure of the multiple self-locking ribs 412 is regular, so that the filter plug 400 is easy to process and shape.

[0068] In one embodiment, the width of the self-locking rib 412 increases first and then decreases from the end close to the self-locking column 411 toward the end away from the self-locking column 411. It can be understood that the connecting end of the self-locking rib 412 is connected to the self-locking column 411, the free end of the self-locking rib 412 is spaced apart from the self-locking column 411, and the free end of the self-locking rib 412 abuts against the inner wall of the water inlet channel 110 when inserted into the water inlet channel 110. Since the width of the free end of the self-locking rib 412 is small, the free end of the self-locking rib 412 is easy to deform when it abuts against the inner wall of the channel; and the middle width of the self-locking rib 412 is large, which not only increases the structural strength of the self-locking rib 412, but also increases the contact area between the self-locking rib 412 and the inner wall of the water inlet channel 110 when the self-locking rib 412 is deformed, thereby increasing the self-locking stability.

[0069] See also Figure 2 and Figure 7 In one embodiment, a guide section 420 is formed at one end of the self-locking portion 410 close to the anti-scaling filter material 200, and the outer diameter of the guide section 420 is gradually reduced along the water inlet direction of the water inlet channel 110. With such a configuration, when the self-locking portion 410 is inserted into the water inlet channel 110, the guide section 420 can guide the self-locking portion 410 so that the self-locking portion 410 can be smoothly inserted into the water inlet channel 110. The outer wall of the guide section 420 is configured in a smooth arc shape, which reduces the difficulty of installing and inserting the self-locking portion 410, making the filter plug 400 easy to install. It can be seen that the filter plug 400 in the present application can adapt to the assembly tolerance of the water inlet channel 110, the filter plug 400 has good assembly processability, can be self-locked after assembly and will not fall out from the first water inlet, and the filter plug 400 has high installation reliability. Furthermore, the filter plug 400 can be split along its axial direction, so that the mold structure of the filter plug 400 is simple and the manufacturing cost is low.

[0070] In one embodiment, the solenoid valve of the present application is a wastewater solenoid valve, that is, the solenoid valve of the present application is applied to a water purifier, specifically, the solenoid valve is used to be installed on the wastewater pipeline of the water purifier.

[0071] A water purifier generally includes a composite filter element assembly, a booster pump, and a wastewater solenoid valve, etc. The water purifier can be equipped with different devices as needed, such as a temperature sensor to control the temperature of the purified water; or an oxygen generator to add oxygen to the purified water to make the purified water rich in oxygen, etc., without special limitation here. The composite filter element assembly can be composed of multiple independent filter units, or a unit composed of multiple different filter layers. Different filter element layers can be set as needed, such as a PP cotton layer, a front activated carbon layer, an ultra-permeable membrane layer, a RO reverse osmosis membrane layer, and a rear activated carbon layer, etc. Of course, each filter layer can also be set as an independent unit as needed. The PP cotton layer can reduce the turbidity, color and impurities visible to the naked eye of the raw water when filtering the raw water; the front activated carbon layer has adsorption capacity, which can reduce the oxygen consumption and turbidity of the raw water; and the ultra-transparent membrane also has adsorption capacity, which can effectively reduce the turbidity of the water, impurities visible to the naked eye and the oxygen consumption of the raw water; the RO reverse osmosis membrane layer can effectively reduce the total dissolved solids of the water, remove bacteria, and reduce heavy metal pollutants such as arsenic and vanadium, so that the raw water can reach the standard of purified water that can be consumed by the human body; and the rear activated carbon layer removes the mixed odor of the raw water to make the purified water fresher.

[0072] In the multi-layer filtration layer, RO reverse osmosis membrane is the core filtration element of reverse osmosis water purifier. Generally, water flows from low concentration to high concentration. Once water is pressurized, it can flow from high concentration to low concentration, which is the so-called reverse osmosis principle. Since the pore size of RO membrane is 0.0001 micron, it is invisible to the naked eye. Bacteria and viruses are 5000 times larger than it. Therefore, only water molecules and some mineral ions that are beneficial to the human body can pass through. Other impurities and heavy metals are discharged by the wastewater pipe connected to the RO reverse osmosis membrane.

[0073] In order to allow water molecules to penetrate from high-concentration raw water to low-concentration clean water, the raw water side is often pressurized so that water molecules can penetrate to the clean water side under the action of pressure, thereby obtaining more clean water. In the relevant technical field, a wastewater solenoid valve is usually set on the wastewater pipeline, and a booster pump is set upstream of the RO reverse osmosis membrane. The wastewater solenoid valve and the raw water chamber of the RO reverse osmosis membrane form a relatively closed sealed cavity, and then the booster pump increases the water pressure to allow water molecules to penetrate from high-concentration raw water to low-concentration clean water. In order to better control the wastewater ratio of the water purifier, the ratio between the amount of wastewater produced by obtaining a cup of clean water, the wastewater solenoid valve can control the wastewater ratio by controlling the flow of wastewater.

[0074] In order to realize the function of solenoid valve to control wastewater flow, please refer to Figure 3 , Figure 8 and Fig. 9In one embodiment, the valve chamber 120 has a high-pressure chamber 121 connected to the water inlet channel 110, a low-pressure chamber 122 connected to the water outlet channel 130, a valve port 123 connecting the high-pressure chamber 121 and the low-pressure chamber 122, and a throttle hole 124 connecting the high-pressure chamber 121 and the water outlet channel 130, and the throttle hole 124 is arranged outside the low-pressure chamber 122; the solenoid valve also includes a valve core 500, which is movably arranged in the valve chamber 120 and is used to open or close the valve port 123 to connect or disconnect the high-pressure chamber 121 and the low-pressure chamber 122.

[0075] It can be understood that the water inlet channel 110 may include a water inlet pipe 101, which is arranged on the outer peripheral side of the valve body 100, and the water inlet pipe 101 is used to connect the solenoid valve to the wastewater pipe, so as to introduce wastewater into the solenoid valve. The water outlet channel 130 may include a water outlet pipe 102, which is arranged on the outer peripheral side of the solenoid valve, wherein the water outlet pipe 102 can be arranged on both sides of the solenoid valve opposite to the water inlet pipe 101, or the water outlet pipe 102 and the water inlet pipe 101 are arranged on the same side of the solenoid valve, and the specific details are not limited here. In this embodiment, the water inlet pipe 101 and the water outlet pipe 102 are arranged on the same side of the valve body 100, which can reduce the volume of the solenoid valve and facilitate the installation of the solenoid valve. Furthermore, in order to improve the connection tightness of the solenoid valve, a sealing gasket may be provided on the water inlet pipe 101 and / or the water outlet pipe 102, thereby improving the connection tightness of the solenoid valve and the wastewater pipe.

[0076] Further, the water inlet pipe 101 is integrally formed with the valve body 100, and of course, the water inlet pipe 101 can also be separately formed with the valve body 100, such as being detachably connected. The water outlet pipe 102 is integrally formed with the valve body 100, and of course, the water outlet pipe 102 can also be separately formed with the valve body 100, such as being detachably connected, which is not specifically limited here.

[0077] Furthermore, a water-confining rib 160 is provided on the inner wall of the valve cavity 120. The water-confining rib 160 can be arranged in a ring shape to separate the valve cavity 120 into a high-pressure cavity 121 and a low-pressure cavity 122. The high-pressure cavity 121 is arranged outside the water-confining rib 160, and the low-pressure cavity 122 is arranged inside the water-confining rib 160. The open end of the water-confining rib 160 forms a valve port 123.

[0078] Furthermore, the solenoid valve also includes an electromagnetic control mechanism 150, which includes an electromagnetic device and a valve core 500. The valve core 500 includes a core body 510, a pressure plate 520 and a diaphragm 530. The pressure plate 520 and the diaphragm 530 are arranged at the same end of the core body 510. The core body 510 can be movably arranged in the electromagnetic device. The electromagnetic device is used to provide power for the movement of the core body 510. The diaphragm 530 is used to cover or open the valve port 123, and the pressure plate 520 is used to press the diaphragm 530.

[0079] It should be noted that in the relevant technical field, in order to extend the service life of the RO reverse osmosis membrane, the solenoid valve 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 the water purification process of purified water, while in the flushing mode, the raw water will directly flow through the surface of the raw water side of the RO reverse osmosis membrane to take away the residual or accumulated impurities, so that the RO reverse osmosis membrane can work normally. In the flushing mode, the water inlet channel 110, the high-pressure chamber 121, the low-pressure chamber 122 and the water outlet channel 130 of the valve body 100 are connected in sequence, so that the raw water can be quickly discharged to achieve the purpose of cleaning.

[0080] When the solenoid valve is in flushing mode, the electromagnetic control mechanism 150 drives the core 510 of the valve core 500 to move and drives the diaphragm 530 to move toward the end away from the valve port 123. At this time, the high-pressure chamber 121 and the low-pressure chamber 122 are connected through the valve port 123, so that the raw water can flow through the water inlet channel 110, the high-pressure chamber 121, the valve port 123, the low-pressure chamber 122 and the water outlet channel 130 in sequence and flow out quickly.

[0081] When the solenoid valve is in throttling mode, the valve core 500 closes the valve port 123. At this time, the wastewater can only flow through the water inlet channel 110, the high-pressure chamber 121, the throttling hole 124 and the water outlet channel 130 in sequence and be discharged outward. The wastewater flow rate is controlled through the throttling hole 124, thereby controlling the wastewater ratio of the solenoid valve.

[0082] Since the aperture of the throttle hole 124 is relatively small, impurity ions (such as calcium and magnesium ions) or other impurities in the wastewater can easily clog the throttle hole 124, thereby affecting the service life of the solenoid valve. Therefore, in this solution, a scale-preventing filter material 200 is provided in the water inlet channel 110 to reduce the rate of scale precipitation in the wastewater flowing through the throttle hole 124, thereby preventing scale from clogging the throttle hole 124. Specifically, the scale-preventing filter material 200 is partially dissolved in the wastewater, and the scale-preventing filter material 200 combines with the calcium and magnesium ions in the wastewater to hinder the calcium and magnesium ions from crystallizing, slowing down the rate at which the calcium and magnesium ions crystallize into scale, thereby reducing the scale formed when the wastewater flows through the solenoid valve.

[0083] Furthermore, the throttle hole 124 is located outside the low-pressure chamber 122 and downstream of the water inlet channel 110 , so that wastewater containing the anti-scaling filter material 200 is not likely to form scale at the throttle hole 124 , thereby achieving an anti-blocking effect.

[0084] In addition, in the present solution, the filter plug 400 and / or the first filter 300 can filter large particles of impurities in the wastewater, further improving the anti-blocking effect of the throttling hole 124.

[0085] In one embodiment, the aperture of the throttle hole 124 is D1, and D1 satisfies: 0.3 mm ≤ D1 ≤ 2 mm. It can be understood that limiting the aperture of the throttle hole 124 is conducive to ensuring the throttling effect of the throttle hole 124. The aperture of the throttle hole 124 can be 0.3 mm, or 0.5 mm, or 1.0 mm, or 1.5 mm, or 2.0 mm, etc., which is not specifically limited here.

[0086] The utility model also proposes a water purifier, which includes the solenoid valve as described above. The specific structure of the solenoid valve refers to the above embodiment. Since the water purifier adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0087] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A solenoid valve, characterized in that: include: The valve body comprises a water inlet channel, a valve cavity and a water outlet channel which are connected in sequence; as well as The scale-inhibiting filter material is arranged in the water inlet flow channel to remove scale from the water flowing into the water inlet flow channel.

2. The solenoid valve according to claim 1, characterized in that The solenoid valve further comprises a first filter screen, which is arranged in the water inlet flow channel and downstream of the scale-inhibiting filter material; Alternatively, the first filter screen is arranged at the connection point between the water inlet flow channel and the valve cavity and is located downstream of the scale-inhibiting filter material.

3. The solenoid valve according to claim 2, characterized in that: The valve body comprises a valve main body and a valve seat, the valve main body is arranged on the valve seat and defines the valve cavity with the valve seat, the valve seat has the water inlet flow channel, and the valve seat and the first filter screen are an integral structure.

4. The solenoid valve according to claim 2, characterized in that: The first filter screen includes a plurality of first ribs, which are disposed in the valve cavity and arranged in sequence at intervals, and the first ribs are connected to the inner wall of the valve cavity.

5. The solenoid valve according to claim 4, characterized in that The first filter screen also includes a plurality of second ribs, which are arranged in the water inlet channel and spaced apart in sequence, the second ribs are connected to the first ribs and the inner wall of the water inlet channel, and the first ribs and the second ribs are arranged in an alternating manner to form a first filter hole.

6. The solenoid valve according to claim 1, characterized in that: The solenoid valve further comprises a filter plug, which is arranged in the water inlet flow channel and located upstream of the scale-inhibiting filter material; Alternatively, the water inlet channel has a first water inlet, and the filter plug is arranged at the first water inlet and is located upstream of the scale-inhibiting filter material.

7. The solenoid valve according to claim 6, characterized in that The filter plug comprises a self-locking portion, which is scalably inserted into the first water inlet of the water inlet channel, and the self-locking portion elastically abuts against the inner wall of the water inlet channel.

8. The solenoid valve according to claim 7, characterized in that The self-locking portion includes a self-locking column and a plurality of self-locking ribs. The plurality of self-locking ribs are arranged on the outer peripheral wall of the self-locking column and are arranged in sequence around the circumference of the self-locking column. The outer wall of the self-locking rib is elastically abutted against the inner wall of the water inlet channel, and a second filter hole is formed between any two adjacent self-locking ribs.

9. The solenoid valve according to claim 8, characterized in that The self-locking ribs are arranged in an arc shape along the circumference of the self-locking column, and the bending directions of the plurality of self-locking ribs are the same; And / or, the width of the self-locking rib increases first and then decreases from an end close to the self-locking column toward an end away from the self-locking column.

10. The solenoid valve according to claim 8, characterized in that A guide section is formed at one end of the self-locking portion close to the anti-scaling filter material, and the outer diameter of the guide section is gradually reduced along the water inlet direction of the water inlet channel.

11. The solenoid valve according to any one of claims 1 to 10, characterized in that: The valve chamber comprises a high-pressure chamber connected to the water inlet channel, a low-pressure chamber connected to the water outlet channel, a valve port connected to the high-pressure chamber and the low-pressure chamber, and a throttle hole connected to the high-pressure chamber and the water outlet channel, wherein the throttle hole is arranged outside the low-pressure chamber; The solenoid valve further comprises a valve core, which is movably disposed in the valve cavity and is used to open or close the valve port so as to connect or disconnect the high-pressure cavity and the low-pressure cavity.

12. The solenoid valve according to claim 11, characterized in that The aperture of the throttling hole is D1, and D1 satisfies: 0.3mm≤D1≤2mm.

13. A water purifier, characterized in that: Comprising a solenoid valve as claimed in any one of claims 1 to 12.

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