CN213176983U - Electromagnetic valve for water purifier and water purifier - Google Patents

Abstract

The utility model provides a solenoid valve and purifier for purifier. The electromagnetic valve for the water purifier comprises a valve seat and a valve core arranged on the valve seat, wherein the valve seat is provided with a water inlet, a water outlet and an internal flow passage communicated between the water inlet and the water outlet, the electromagnetic valve for the water purifier further comprises a check valve, the check valve is arranged in the internal flow passage, and the conduction direction of the check valve is from the water inlet of the valve seat to the water outlet. Therefore, the electromagnetic valve for the water purifier can have the forward conduction and reverse blocking capabilities by arranging the check valve in the internal flow channel of the electromagnetic valve. When the pressure at the water outlet is overlarge, the reverse conduction of the electromagnetic valve for the water purifier can be prevented. And the check valve is integrated in the inside of this solenoid valve, compares in prior art, can effectively reduce the water leakage point on the pipeline to reduce the risk of leaking, but also can reduce the outside shared space of check valve, reduce the size of purifier.

Description

Electromagnetic valve for water purifier and water purifier

Technical Field

The utility model relates to a technical field of aqueous cleaning specifically, relates to a purifier that is used for the solenoid valve of purifier and has this solenoid valve.

Background

With the improvement of living standard, the requirement of people on the water quality of domestic water is higher and higher, and various types of water purifiers appear on the market at present.

Inside the purifier, the water flow is usually controlled by an electromagnetic valve, which includes a valve seat and a valve core. The valve seat is internally provided with an internal flow passage, and the valve core moves in the valve seat to conduct or stop the internal passage, thereby playing a role in controlling water flow.

In order to prevent the water flow in the water purifier from flowing reversely, a check valve and an electromagnetic valve are often connected in series on a pipeline for use. However, two more waterway connectors connected with the check valve are arranged on the pipeline provided with the check valve, so that the risk of water leakage is increased. And the check valve is connected in series on the pipeline, the integration level of the water purifier can be reduced, the size of the water purifier is increased, and the product cost is increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that exists among the prior art at least partially, according to the utility model discloses an aspect provides a solenoid valve, including disk seat and the case of setting on the disk seat, the disk seat has water inlet, delivery port and communicates the inside runner between water inlet and delivery port for the solenoid valve of purifier still includes the check valve, and the check valve sets up in inside runner, and wherein, the direction that switches on of check valve is the water inlet by the disk seat to the delivery port.

Therefore, the electromagnetic valve for the water purifier can have the forward conduction and reverse stop capabilities by arranging the check valve in the internal flow channel of the electromagnetic valve. When the pressure at the water outlet is overlarge, the reverse conduction of the electromagnetic valve for the water purifier can be prevented. And the check valve is integrated in the inside of this solenoid valve, compares in prior art, can effectively reduce the water leakage point on the pipeline to reduce the risk of leaking, but also can reduce the outside shared space of check valve, reduce the size of purifier.

Illustratively, the inner flow passage has a water inlet flow passage and a water outlet flow passage, the water inlet flow passage is disposed at the water inlet of the valve seat, the water outlet flow passage is disposed at the water outlet of the valve seat, and the check valve is disposed in the water inlet flow passage and/or the water outlet flow passage.

The water gap flow passage has a tubular structure which is regular, so that the check valve can be conveniently arranged in the water gap flow passage. And the check valve is arranged in the water inlet flow passage or the water outlet flow passage, and the check valve has the advantage of convenient disassembly.

Illustratively, a boss and a sealing ring are arranged on the side wall of the nozzle runner, the boss and the sealing ring are spaced along the axial direction of the nozzle runner, the sealing ring is closer to the outer part of the nozzle runner than the boss, and the check valve is clamped between the boss and the sealing ring.

The boss can carry out spacingly to the degree of depth of check valve installation, and the sealing washer setting can prevent then that the check valve from droing in the mouth of a river runner near the outside of mouth of a river runner. Especially, under the condition that the flow speed and the flow of water are large, the sealing ring can prevent the check valve from being flushed out by the water flow in the water outlet flow channel. When the external pipeline is connected to the electromagnetic valve, the external pipeline can be inserted into the corresponding sealing ring from the water inlet and the water outlet of the valve seat, so that the sealing ring can be sealed with the external pipeline.

The valve seat is provided with a built-in pipeline, the built-in pipeline forms a part of the internal flow passage, the valve core can move in a reciprocating mode in the axial direction of the built-in pipeline, the valve core is provided with a water passing position enabling the built-in pipeline to be conducted and a water stopping position enabling the built-in pipeline to be stopped on the reciprocating moving path of the valve core, and the check valve is arranged in the built-in pipeline.

The built-in pipeline is a straight pipe section and has enough space for placing a check valve. Through setting up the check valve in built-in pipeline, not only improved the integrated level, can also avoid because when velocity of flow and flow are very big, rush the check valve out the disk seat. Further, the solenoid valve that has this structure, disk seat inner structure is simple, and the case motion mode is single, and the processing of being convenient for easily realizes, has the solenoid valve that is used for the purifier of this structure moreover, and the function is single, and in long-term the use, the stability of product is high, and is not fragile.

Exemplarily, a first boss and a second boss which are spaced from each other along the axial direction are arranged on the inner side wall of the built-in pipeline, and the check valve is clamped between the first boss and the second boss.

Therefore, the displacement of the check valve in the built-in pipeline can be limited, and the check valve is prevented from moving in the built-in pipeline along with the direction of water flow when the water flow passes through the built-in pipeline. The risk that the check valve blocks the valve core and cannot stop can be avoided.

Illustratively, the check valve includes: the check valve mounting seat is arranged in the internal flow passage and is provided with a check valve water inlet and a check valve water outlet which are oppositely arranged, and a water passing channel is arranged between the check valve water inlet and the check valve water outlet; the check valve core is arranged in the water passing channel, can move between a first position and a second position along the axis of the water passing channel in the water passing channel, blocks the water inlet of the check valve when the check valve core is at the first position, and is spaced from the water inlet of the check valve when the check valve core is at the second position so as to enable the water inlet of the check valve to be communicated with the water passing channel; the check valve elastic part is arranged between the check valve mounting seat and the check valve core, and has first elastic deformation when the check valve core is at a first position, and has second elastic deformation when the check valve core is at a second position, wherein the second elastic deformation is larger than the first elastic deformation.

From this, the check valve that has above setting, simple structure, small in size easily packs into the disk seat in, realizes with the high integration that is used for the solenoid valve of purifier.

Illustratively, the check valve core comprises a head part and a rod part connected to the head part, the check valve elastic part is sleeved on the rod part and clamped between the check valve mounting seat and the head part, a guide hole extending along the axial direction of the water passing channel is arranged at the end part of the check valve mounting seat where the check valve water outlet is located, and the rod part is slidably inserted into the guide hole.

Therefore, the check valve core with the structure can be conveniently sleeved with the check valve elastic piece, and can reduce the volume of the check valve core, the size of the check valve, the material and the cost.

Illustratively, the guide hole is connected with a rod sleeve, the rod sleeve extends from the edge of the guide hole to the water inlet of the check valve along the axial direction of the water passage, an annular groove surrounding the rod part is formed in the head part of the check valve core, one end of the check valve elastic part is sleeved on the rod sleeve, and the other end of the check valve elastic part extends into the annular groove.

Therefore, the guide hole provided with the rod sleeve can enhance the guide effect on the check valve core in the movement process. The annular groove can facilitate the connection of the check valve elastic part and the check valve core, so that the check valve elastic part is prevented from being inclined in the movement process of the check valve core, and the phenomenon of valve clamping is avoided.

Exemplarily, the check valve mount pad includes first mount pad and second mount pad, and the check valve water inlet sets up on first mount pad, and the check valve delivery port sets up on the second mount pad, and first mount pad is connected to the second mount pad.

The check valve mounting seat is arranged into two split parts, so that the check valve core and the check valve elastic part can be conveniently mounted.

Illustratively, the solenoid valve for the water purifier is a pilot-operated solenoid valve.

The pilot-operated electromagnetic valve has the advantages that the electromagnetic valve arranged on a pipeline with high back pressure and large flow can be controlled by using a low-power electromagnet, and the required energy consumption is low. And the electromagnet is small in size, and vibration and noise generated when the valve core moves are small. The pilot-operated electromagnetic valve is simple in internal structure and easy to integrate with the check valve, and the practicability of the pilot-operated electromagnetic valve for the water purifier is improved.

According to another aspect of the utility model, still provide a purifier, including any one of above-mentioned solenoid valve that is used for the purifier.

A series of concepts in a simplified form are introduced in the disclosure, which will be described in further detail in the detailed description section. The summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 is a cross-sectional view of a solenoid valve for a water purifier according to an exemplary embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is an exploded view of a check valve according to an exemplary embodiment of the present invention; and

fig. 4 is a perspective view of the check valve of fig. 3.

Wherein the figures include the following reference numerals:

100. a valve seat; 110. an internal flow passage; 120. a water inlet; 130. a water outlet; 200. a water gap flow channel; 210. a water inlet flow passage; 220. a water outlet flow passage; 230. a boss; 240. a seal ring; 140. a pipeline is arranged inside; 141. a first boss; 142. a second boss; 300. a valve core; 310. sealing the diaphragm; 311. a central bore; 312. a side hole; 400. a check valve; 410. a check valve mounting seat; 411. a water inlet of the check valve; 412. a water outlet of the check valve; 413. a water passage; 414. a guide hole; 415. a rod sleeve; 401. a first mounting seat; 402. a second mounting seat; 420. a check valve core; 421. a head portion; 422. a rod portion; 423. an annular groove; 430. check valve elastic component.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present invention. One skilled in the art, however, will understand that the following description illustrates only a preferred embodiment of the invention and that the invention may be practiced without one or more of these details. In addition, some technical features that are well known in the art are not described in detail in order to avoid obscuring the present invention.

The utility model provides an electromagnetic valve for purifier, hereinafter be referred to as the electromagnetic valve, as shown in fig. 1, including disk seat 100 and the case 300 of setting on disk seat 100. The valve seat 100 has a water inlet 120, a water outlet 130, and an internal flow passage 110. The internal flow passage 110 extends from the inlet 120 of the valve seat 100 to the outlet 130 thereof. Water flows into the valve seat 100 from the water inlet 120, along the internal flow passage 110, and out of the water outlet 130. The internal flow passage 110 may have various structural forms according to the fitting relationship between the valve seat 100 and the valve element 300. In the embodiment shown in fig. 1, the internal flow passage 110 has a zigzag shape, and water may flow through the solenoid valve through the internal flow passage 110.

The valve body 300 has a water passing position and a water blocking position for opening and closing the internal flow passage 110. There may also be a variety of different mating patterns between the valve seat 100 and the poppet 300. For example, the cartridge 300 may be a butterfly valve cartridge, and the cartridge 300 is switched between the water passing position and the water cut-off position by rotating within the valve seat 100. Alternatively, the valve member 300 may be a spool valve member, and the valve member 300 performs opening and closing of the internal flow passage 110 by moving linearly along its own axis in the valve seat 100.

The solenoid valve further includes a check valve 400, and the check valve 400 is disposed in the internal flow passage 110. The check valve 400 may be placed at any position in the internal flow passage 110. The check valve 400 is conducted from the water inlet 120 to the water outlet 130 of the valve seat 100. The check valve 400 can control the flow direction of the water flow in the inner flow passage 110 only from the water inlet 120 to the water outlet 130. Thus, the solenoid valve becomes a solenoid valve capable of making the water flow have a single flow direction.

Thus, the solenoid valve can have the capability of forward conduction and reverse blocking by providing the check valve 400 in the internal flow passage thereof. When the pressure at the water outlet is overlarge, the reverse conduction of the electromagnetic valve can be prevented. And check valve 400 is integrated in the inside of this solenoid valve, compares in prior art, can effectively reduce the water leakage point on the pipeline to reduce the risk of leaking, but also can reduce the outside shared space of check valve, reduce the size of purifier.

Illustratively, the inner channel 110 has a nozzle channel 200. The nozzle flow passage 200 may refer to a flow passage having a tubular structure near the water inlet 120 and the water outlet 130 of the valve seat 100, which is a part of the inner flow passage 110. Wherein the nozzle flow passage 200 includes a water inlet flow passage 210 and a water outlet flow passage 220. The inlet flow passage 210 is provided at the inlet 120 of the valve seat 100, and the outlet flow passage 220 is provided at the outlet 130 of the valve seat 100. A check valve 400 may be disposed within the inlet channel 210. A check valve 400 may also be disposed within the outlet channel 220. Check valves 400 may be provided in both the inlet flow path 210 and the outlet flow path 220. Since the nozzle flow passage 200 has a tubular structure, the structure thereof is regular, so that the check valve 400 can be conveniently disposed therein. The check valve 400 is disposed in the water inlet flow passage 210 or the water outlet flow passage 220, and has an advantage of being conveniently disassembled.

Further, a boss 230 and a sealing ring 240 are provided on a sidewall of the nozzle runner 200. The boss 230 is spaced from the seal ring 240 in the axial direction of the nozzle runner 200. The sealing ring 240 is closer to the outside of the nozzle runner 200 than the boss 230. Taking the outlet flow channel 220 as an example, the sealing ring 240 is closer to the outlet 130 of the valve seat 100 than the boss 230. The seal ring is closer to the inlet 120 of the valve seat 100 than the boss is to the inlet flow passage 210 side. The check valve 400 is clamped between the boss 230 and the packing 240, regardless of the inlet flow path 210 side or the outlet flow path 220 side. In this case, taking the side of the outlet channel 220 as an example, when the check valve 400 is installed in the outlet channel 220, the check valve 400 may be pushed into the outlet channel 220, the check valve 400 may abut against the boss 230, and then the sealing ring 240 may be installed. The movement of the check valve 400 in the axial direction of the outlet flow passage 220 is restricted by the boss 230 and the packing 240. The boss 230 may limit the depth of installation of the check valve 400, and the sealing ring 240 may be disposed near the outer portion of the nozzle runner 200 to prevent the check valve 400 from falling off from the nozzle runner 200. Especially, in the case of a large flow rate and a large flow rate, the sealing ring 240 may prevent the check valve 400 from being flushed by the water in the outlet channel 220. When the external pipe is connected to the solenoid valve, the external pipe may be inserted from the water inlet 120 and the water outlet 130 of the valve seat 100 up to the corresponding sealing rings 240, and thus the sealing rings 240 may also be sealed with the external pipe.

In one embodiment, an internal conduit 140 is disposed within the valve seat 100. The built-in pipe 140 has both ends respectively connected to the water inlet 120 and the water outlet 130 of the valve seat 100. The inner conduit 140 may be straight as shown. The inner pipe 140 forms a part of the inner flow passage 110. The spool 300 is reciprocally movable in the axial direction of the built-in pipe 140. The valve body 300 has a water passing position for passing the built-in pipe 140 and a water blocking position for blocking the built-in pipe 140 on its reciprocating path. The valve cartridge 300 may be spaced apart from the end of the inner conduit 140 when in the water-passing position; when the valve core 300 is at the water cut-off position, the end of the built-in pipeline 140 can be blocked. The built-in pipe 140 may be perpendicular to the axis of the water inlet 120 and the water outlet 130. In one embodiment, the solenoid valve may be a direct-acting valve, i.e., when the solenoid is powered, the solenoid drives the valve element 300 to directly control the on/off of the built-in pipeline 140. The valve seat 100 and the valve core 300 have the advantages of simple structure, direct transmission relationship and low cost. A preferred solenoid valve is also described below.

In the case where the built-in pipe 140 described above is provided, the check valve 400 may be provided in the built-in pipe 140. Here a straight tube section and with sufficient space to accommodate the non-return valve 400. Since the water flow inevitably passes through the built-in pipeline 140 when the solenoid valve is turned on, the check valve 400 is disposed in the built-in pipeline 140, so that reverse conduction of the water flow can be effectively avoided. And through setting up check valve 400 in built-in pipeline 140, not only improved the integrated level, can also avoid because when velocity of water flow and flow are very big, rush check valve 400 out the disk seat. Further, the solenoid valve with the structure has the advantages that the internal structure of the valve seat is simple, the movement mode of the valve core is single, the solenoid valve is convenient to process and easy to realize, the solenoid valve with the structure is single in function, and the solenoid valve is high in stability and not easy to damage in long-term use.

Illustratively, as shown in FIG. 2, the inner conduit 140 is disposed vertically, and in other embodiments, the inner conduit 140 may be disposed in a different orientation within the valve seat 100. On an inner sidewall of the built-in pipe 140, a first boss 141 and a second boss 142 spaced apart from each other in an axial direction are provided. The check valve 400 is disposed between the first boss 141 and the second boss 142.

The first boss 141 may be a continuous annular boss on the inner sidewall of the built-in pipe 140, may also be an intermittent boss, or may also be a discrete type of boss. The second boss 142 may also adopt any of the above-described structures. In short, the check valve 400 may be held in the built-in pipe 140 by the first boss 141 and the second boss 142, and the movement of the check valve 400 in the built-in pipe 140 in the axial direction may be restricted.

Thus, the displacement of the check valve 400 in the built-in pipe 140 can be restricted, and the check valve 400 can be prevented from moving in the built-in pipe 140 along with the water flow when the water flow passes through. The risk of the check valve 400 jamming the valve spool 300 and failing to stop can be avoided.

Illustratively, as shown in fig. 2-4, the check valve 400 includes a check valve mounting seat 410, a check valve core 420, and a check valve resilient member 430.

A check valve mount 410 is disposed within the internal flow passage 110. The check valve mounting seat 410 has a check valve inlet 411 and a check valve outlet 412 disposed opposite to each other. A water passage 413 is provided between the check valve water inlet 411 and the check valve water outlet 412.

The check valve cartridge 420 is disposed within the water passage 413, and the check valve cartridge 420 is movable within the water passage 413 along an axis of the water passage 413 between a first position and a second position. The check valve core 420 blocks the check valve water inlet 411 when in the first position. The check valve spool 420 is spaced apart from the check valve inlet 411 when in the second position such that the check valve inlet 411 is in communication with the water passage 413. The check valve core 420 may have any shape, for example, it may be a cylinder or a sphere, and moves up and down in the water passage 413 in the arrangement direction in the figure, so as to seal or open the check valve water inlet 411.

The check valve elastic member 430 is disposed between the check valve mounting seat 410 and the check valve core 420. The check valve elastic member 430 has a first elastic deformation when the check valve element 420 is in the first position, and the check valve elastic member 430 has a second elastic deformation when the check valve element 420 is in the second position. Wherein the second elastic deformation is greater than the first elastic deformation. In the illustrated embodiment, when the check valve spool 420 is in the second position, the check valve spool 420 will move downward, compressing the check valve spring 430. The force urging the check valve spool 420 downward may be generated by the flow of water into the check valve inlet 411. When the water flow stops flowing or the water flow entering from the check valve inlet 411 has insufficient driving force, the check valve elastic member 430 pushes the check valve core 420 to move upward until the check valve core 420 blocks the check valve inlet 411. Thus, even if water flows into the check valve 400 from the check valve outlet 412, the check valve body 420 does not open the check valve inlet 411. Thereby realizing the function of preventing the water flow from flowing in the direction.

Therefore, the check valve 400 with the above arrangement has the advantages of simple structure, small volume, easy installation in the valve seat 100 and high integration with the electromagnetic valve.

Illustratively, the check valve cartridge 420 includes a head 421 and a stem 422 coupled to the head 421. The head 421 is disposed adjacent to the check valve inlet 411 and the stem 422 is disposed adjacent to the check valve outlet 412. The check valve elastic member 430 is fitted over the stem portion 422. The check valve elastic member 430 may be a spring, an elastic tube, or the like. The check valve elastic member 430 is sandwiched between the check valve mounting seat 410 and the head 421. At an end portion of the check valve mounting seat 410 where the check valve outlet 412 is located, a guide hole 414 extending in an axial direction of the water passage 413 is provided. The rod portion 422 may be slidably inserted into the guide hole 414.

In the process that the check valve core 420 moves in the check valve mounting seat 410, the water flow entering from the check valve water inlet 411 can push the head of the check valve core 420, so that the water passage 413 is communicated. In the process of stopping the water passage 413, the check valve elastic member 430 can push the head 421 to drive the check valve core 420 to move upwards, and the head 421 is used for blocking the check valve water inlet 411. The guide hole 414 may restrict the movement direction of the check valve core 420 to keep it moving in the axial direction of the check valve installation seat 410.

Therefore, the check valve core 420 with the structure can be conveniently sleeved with the check valve elastic piece 430, and in addition, the volume of the check valve core 420 can be reduced, the size of the check valve 400 is reduced, materials are reduced, and the cost is reduced.

Further, a rod sleeve 415 is connected to the guide hole 414, the rod sleeve 415 extends from the edge of the guide hole 414 to the check valve inlet 411 along the axial direction of the water passage 413, and an annular groove 423 surrounding the rod portion 422 is formed on the head portion 421 of the check valve core 420. One end of the check valve elastic member 430 is fitted over the rod housing 415, and the other end of the check valve elastic member 430 extends into the annular groove 423.

Thus, the guide hole 414 provided with the rod cover 415 may enhance a guiding function during the movement of the check valve body 420. The annular groove 423 is convenient for the check valve elastic member 430 to be connected with the check valve core 420, so that the check valve elastic member 430 is prevented from being inclined in the movement process of the check valve core 420, and the valve clamping phenomenon is avoided.

Further, the check valve mount 410 may include a first mount 401 and a second mount 402. A check valve inlet 411 is provided on the first mounting seat 401 and a check valve outlet 412 is provided on the second mounting seat 402. The first mount 401 and the second mount 402 may be snap-fit connected together. In the embodiment shown in the figure, the first mounting seat 401 and the second mounting seat 402 may be two barrel-shaped structures, and the connection between the first mounting seat 401 and the second mounting seat 402 is realized by sleeving the second mounting seat 402 in the first mounting seat 401.

The check valve mounting seat 410 is formed as two separate parts, which facilitates the mounting of the check valve core 420 and the check valve elastic member 430.

In one embodiment, the solenoid valve may be a pilot operated solenoid valve.

In the embodiment shown, a sealing diaphragm 310 is provided within the pilot operated solenoid valve. The edge of the sealing diaphragm 310 may be secured to the valve seat 100. The sealing diaphragm 310 partitions the space inside the valve seat 100 into an upper space and a lower space. The valve core is positioned in the upper space. The lower space communicates the water outlet and the water inlet of the valve seat 100, and the built-in pipe 140 is disposed in the lower space. A central hole 311 and a side hole 312 are provided in the sealing diaphragm 310. The central hole 311 may communicate the upper space with the built-in pipe 140. The side hole 312 communicates the upper space with the external space outside the built-in pipe 140. The valve core 300 moves vertically to close and open the central hole 311. When the pilot type solenoid valve is turned off, the valve body 300 falls to close the center hole 311. The water flowing into the valve seat 100 from the water inlet will first enter the upper space above the sealing diaphragm 310 through the side hole 312, and the sealing diaphragm 310 will be pressed by the water pressure under the action of the water inlet pressure, so as to seal the sealing diaphragm 310 and the upper end of the built-in pipeline 140. The sealing diaphragm 310 seals the inner conduit 140 more tightly with a higher water pressure.

When the valve core 300 is lifted up, the central hole 311 communicates the upper space of the sealing diaphragm 310 with the built-in pipeline 140, water in the upper space of the sealing diaphragm 310 flows out through the central hole 311, so that the water in the upper space of the sealing diaphragm 310 is released, and at the moment, the water at the water inlet 120 pushes the sealing diaphragm 310 to move upwards, so that the water inlet 120 and the water outlet 130 are communicated through the built-in pipeline 140.

The working principle and the using method of the pilot-operated solenoid valve are well known to those skilled in the art, and the internal structure thereof is not limited to the above-mentioned structure.

The pilot-operated electromagnetic valve has the advantages that the electromagnetic valve arranged on a pipeline with high back pressure and large flow can be controlled by using a low-power electromagnetic device, and the required energy consumption is low. And the electromagnet is small in size, and vibration and noise generated when the valve core moves are small. The pilot-operated electromagnetic valve is simple in internal structure and easy to integrate with the check valve, and the practicability of the pilot-operated electromagnetic valve for the water purifier is improved.

According to another aspect of the utility model, still provide a purifier, including any one of above-mentioned solenoid valve that is used for the purifier.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal" and "top", "bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (11)

1. The utility model provides an electromagnetic valve for purifier, includes disk seat (100) and sets up case (300) on the disk seat, the disk seat has water inlet (120), delivery port (130) and communicates be in the water inlet with inside runner (110) between the delivery port, characterized in that, an electromagnetic valve for purifier still includes check valve (400), the check valve sets up in the inside runner, wherein, the switching on direction of check valve is by the disk seat the water inlet to the delivery port.

2. Solenoid valve for a water purifier according to claim 1, characterized in that said internal flow channel (110) has a water outlet flow channel (200) comprising a water inlet flow channel (210) arranged at said water inlet (120) of said valve seat (100) and a water outlet flow channel (220) arranged at said water outlet (130) of said valve seat, said non-return valve (400) being arranged inside said water inlet flow channel and/or said water outlet flow channel.

3. The electromagnetic valve for a water purifier according to claim 2, wherein a boss (230) and a sealing ring (240) are provided on a side wall of the nozzle flow passage (200), the boss and the sealing ring are spaced apart in an axial direction of the nozzle flow passage, and the sealing ring is closer to an outside of the nozzle flow passage than the boss, and the check valve (400) is held between the boss and the sealing ring.

4. The electromagnetic valve for a water purifier according to claim 1, wherein an internal pipe (140) is provided in the valve seat (100), the internal pipe forming a part of the internal flow passage (110), the valve body (300) being reciprocally movable in an axial direction of the internal pipe, the valve body having a water passing position where the internal pipe is turned on and a water intercepting position where the internal pipe is turned off on a reciprocating path thereof,

wherein the non-return valve (400) is arranged in the built-in pipeline.

5. The electromagnetic valve for a water purifier as recited in claim 4, wherein the built-in pipeline (140) is provided on its inner side wall with a first boss (141) and a second boss (142) spaced from each other in the axial direction, and the check valve (400) is held between the first boss and the second boss.

6. Solenoid valve for a water purifier according to claim 1, characterized in that said non-return valve (400) comprises:

the check valve mounting seat (410) is arranged in the internal flow channel (110), the check valve mounting seat is provided with a check valve water inlet (411) and a check valve water outlet (412) which are oppositely arranged, and a water passing channel (413) is arranged between the check valve water inlet and the check valve water outlet;

the check valve core (420) is arranged in the water passing channel, the check valve core can move between a first position and a second position along the axis of the water passing channel in the water passing channel, the check valve core blocks the water inlet of the check valve when being positioned at the first position, and the check valve core is spaced from the water inlet of the check valve when being positioned at the second position so as to enable the water inlet of the check valve to be communicated with the water passing channel;

and the check valve elastic part (430) is arranged between the check valve mounting seat and the check valve core, and has first elastic deformation when the check valve core is positioned at the first position, and has second elastic deformation when the check valve core is positioned at the second position, wherein the second elastic deformation is larger than the first elastic deformation.

7. The electromagnetic valve for a water purifier as recited in claim 6, wherein the check valve core (420) comprises a head portion (421) and a rod portion (422) connected to the head portion, the check valve elastic member (430) is sleeved on the rod portion, the check valve elastic member is clamped between the check valve mounting seat (410) and the head portion, a guide hole (414) extending along an axial direction of the water passage is provided at an end portion of the check valve mounting seat where the check valve water outlet (412) is located, and the rod portion is slidably inserted into the guide hole.

8. The electromagnetic valve for a water purifier as recited in claim 7, wherein said guide hole (414) is connected with a rod sleeve (415) extending from the edge of said guide hole to said check valve inlet (411) along the axial direction of said water passage (413), said head (421) of said check valve core (420) is provided with an annular groove (423) surrounding said rod, one end of said check valve elastic member (430) is sleeved on said rod sleeve, and the other end of said check valve elastic member extends into said annular groove.

9. The solenoid valve for a water purifier according to claim 6, wherein the check valve mounting seat (410) comprises a first mounting seat (401) on which the check valve water inlet (411) is provided and a second mounting seat (402) on which the check valve water outlet (412) is provided, the first mounting seat being connected to the second mounting seat.

10. Electromagnetic valve for water purification machine according to any of claims 1 to 9, characterized in that it is a pilot-operated electromagnetic valve.

11. A water purification machine comprising a solenoid valve for a water purification machine according to any one of claims 1 to 10.

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