CN214425166U - Electromagnetic valve - Google Patents

Abstract

The utility model discloses a solenoid valve, solenoid valve includes: the valve cavity is provided with a water inlet connecting pipe, a first water outlet connecting pipe and a second water outlet connecting pipe; the valve core assembly comprises a first magnetic element and a second magnetic element; the magnetic force supply assembly comprises a wire frame, the wire frame is provided with a guide groove, the first magnetic element is arranged at one end of the guide groove, and the second magnetic element is arranged at the other end of the guide groove; under the action of magnetic field force, the first magnetic element can axially move relative to the guide groove; the valve plug assembly is driven by the first magnetic element and can move at a first position for communicating the water inlet connecting pipe with the first water outlet connecting pipe and a second position for communicating the water inlet connecting pipe with the second water outlet connecting pipe; and the magnetism increasing element is arranged on the end face of the coil holder so as to enhance the magnetic field interaction force between the first magnetic element and the second magnetic element. According to the utility model discloses solenoid valve can effectively restrain the production of incrustation scale, improves the life of product.

Description

Electromagnetic valve

Technical Field

The application relates to the technical field of valve bodies, in particular to an electromagnetic valve.

Background

Among the correlation technique, when the solenoid valve was used for controlling the fluid break-make, because the clearance that the valve plug was opened is less, the incrustation scale is very easy to be accumulated in valve plug position department, can cause the unable play water of jam for a long time, perhaps the unable normal condition that leads to the solenoid valve inefficacy that resets of valve plug.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

Therefore, an object of the utility model is to provide a better solenoid valve of scale prevention effect.

According to the utility model discloses solenoid valve, include: the valve head is provided with a valve cavity and is provided with a water inlet connecting pipe, a first water outlet connecting pipe and a second water outlet connecting pipe; a spool assembly including a first magnetic element and a second magnetic element; the magnetic force supply assembly comprises a wire frame, a guide groove is formed in the wire frame, the first magnetic element is arranged at one end of the guide groove, and the second magnetic element is arranged at the other end of the guide groove; the coil is wound on the periphery of the coil holder, an electromagnetic field is generated in a power-on state, the first magnetic element can axially move relative to the guide groove under the action of magnetic field force, and the second magnetic element is static; the valve plug assembly is connected to the first magnetic element, and is driven by the first magnetic element to move at a first position for communicating the water inlet connecting pipe with the first water outlet connecting pipe and a second position for communicating the water inlet connecting pipe with the second water outlet connecting pipe; the magnetism increasing element is arranged on the end face of the wire frame and surrounds the periphery of the first magnetic element so as to enhance the magnetic field interaction force between the first magnetic element and the second magnetic element, and therefore the stroke of the valve plug assembly is increased.

According to the utility model discloses the solenoid valve increases the stroke of valve plug subassembly through setting up the component of magnetizing, when the valve plug subassembly is in the first position, the stroke that the valve plug subassembly removed is great, the valve plug subassembly open with first play water take over between the clearance great, and when the valve plug subassembly is in the second position, the stroke that the valve plug subassembly removed is great, the valve plug subassembly open with the second play water take over between the clearance great, all can reduce the resistance to rivers, effectively restrain the production of incrustation scale, thereby can improve the life of product.

In addition, the solenoid valve according to the above embodiment of the present invention may further have the following additional technical features:

according to some embodiments of the utility model, the valve head includes first valve body and second valve body, first cavity is injectd to first valve body, the water inlet take over with first water outlet take over is formed at on the first valve body, the second valve body has the second cavity, second water outlet take over is formed at on the second valve body, the second valve body be equipped with the ferry mouth be used for the first cavity of intercommunication with the second cavity, cross the ferry mouth with first water outlet take over is relative setting in the axial.

According to some embodiments of the invention, the valve plug assembly comprises: the water outlet device comprises a push rod and a sealing plug arranged at one end of the push rod, wherein an axial through hole is limited by the first magnetic element, an inserting part is arranged at the other end of the push rod and extends into the axial through hole, the lower end face of the sealing plug seals the inlet of the transition port under the condition of a first position, and the upper end face of the sealing plug seals the inlet of the first water outlet connecting pipe under the condition of a second position.

According to some embodiments of the utility model, the other end of push rod still is equipped with around locating the annular groove of portion of inserting, first magnetic element is equipped with connecting portion, connecting portion stretch into in the annular groove.

According to some embodiments of the present invention, further comprising: the elastic isolating piece is provided with a connecting through hole, the inner end of the elastic isolating piece is clamped between the push rod and the end face of the first magnetic element, the outer end of the elastic isolating piece is clamped between the second valve body and the end face of the magnetism increasing element, and the connecting through hole is in interference fit with the connecting portion.

According to some embodiments of the invention, the elastomeric isolator has a plurality of upwardly or downwardly curved pleats.

According to some embodiments of the invention, the entrance of the transition opening is provided with an upwardly protruding lip.

According to some embodiments of the invention, the first valve body and the second valve body are locked by screws.

According to some embodiments of the utility model, be equipped with the direction cambered surface on the push rod.

According to some embodiments of the present invention, one of the end surface of the wire frame and the magnetism increasing element is provided with a positioning protrusion, and the other is provided with a positioning hole.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a cross-sectional view of a solenoid valve according to an embodiment of the present invention;

fig. 2 is a perspective view of a first valve body according to an embodiment of the present invention;

fig. 3 is a perspective view of a second valve body according to an embodiment of the present invention;

fig. 4 is a perspective view of a first valve body according to an embodiment of the present invention;

fig. 5 is a perspective view of a second valve body according to an embodiment of the present invention;

fig. 6 is a perspective view of a partial structure according to an embodiment of the present invention;

fig. 7 is a cross-sectional view of a portion of a structure according to an embodiment of the present invention;

fig. 8 is a perspective view of a wire frame and a magnetism increasing element according to an embodiment of the present invention.

Reference numerals:

the solenoid valve (100) is operated in a closed position,

a valve head 10, a first valve body 11, a first chamber 110, a water inlet connecting pipe 111, a water outlet connecting pipe 112, a second valve body 12, a second chamber 120, a second water outlet connecting pipe 121, a transition port 122, a lip 123,

the valve core assembly 20, the first magnetic element 21, the connecting portion 211, the second magnetic element 22,

the magnetic force supply assembly 30, the bobbin 31, the guide groove 311, the positioning projection 312,

the valve plug assembly 40, the push rod 41, the insert 4111, the guide curved surface 4111, the sealing plug 42,

a magnetism increasing element 50, a positioning hole 51, a connecting through hole 52,

the elastic barrier 60, the corrugations 61,

and a screw 70.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 8, a solenoid valve 100 according to an embodiment of the present invention may generally include: the valve head 10, the valve core assembly 20, the magnetic force supply assembly 30, the coil, the valve plug assembly 40 and the magnetism increasing element 50.

As shown in fig. 1, 2, 3, 4 and 5, the valve head 10 forms a valve chamber, the valve head 10 has a water inlet connection pipe 111, a first water outlet connection pipe 112 and a second water outlet connection pipe 121, and the valve plug assembly 40 is movable between a first position for conducting the water inlet connection pipe 111 and the first water outlet connection pipe 112 and a second position for conducting the water inlet connection pipe 111 and the second water outlet connection pipe 121. In other words, the valve plug assembly 40 can selectively connect the water inlet connection pipe 111 with one of the first water outlet connection pipe 112 and the second water outlet connection pipe 121, for example, when the valve plug assembly 40 moves from the second position to the first position, the valve plug assembly 40 moves away from the water inlet of the first water outlet connection pipe 112 until the valve plug assembly 40 abuts against the water inlet of the second water outlet connection pipe 121, so that the valve plug assembly 40 is spaced apart from the water inlet of the first water outlet connection pipe 112, and the first water outlet connection pipe 112 is communicated with the water inlet connection pipe 111; when the valve plug assembly 40 moves from the first position to the second position, the valve plug assembly 40 moves in a direction away from the water inlet of the second water outlet connection pipe 121 until the piston assembly abuts against the water inlet of the first water outlet connection pipe 112, so that the valve plug assembly 40 is spaced apart from the water inlet of the second water outlet connection pipe 121, and the water inlet connection pipe 111 is communicated with the second water outlet connection pipe 121.

As shown in fig. 1, 6 and 7, the valve core assembly 20 includes a first magnetic element 21 and a second magnetic element 22, the magnetic force supply assembly 30 includes a wire frame 31, the wire frame 31 defines a guide slot 311, the first magnetic element 21 is disposed at one end of the guide slot 311, the second magnetic element 22 is disposed at the other end of the guide slot 311, a coil is wound around the periphery of the wire frame 31, an electromagnetic field is generated when the coil is energized, the first magnetic element 21 is axially movable relative to the guide slot 311 under the action of a magnetic field force, the second magnetic element is stationary, the valve plug assembly 40 is connected to the first magnetic element 21, and the valve plug assembly 40 is movable at a first position for conducting the water inlet connection pipe 111 and the first water outlet connection pipe 112 and at a second position for conducting the water inlet connection pipe 111 and the second water outlet connection pipe 121 under the driving of the first magnetic element 21. That is, when the coil is energized, the coil generates an electromagnetic field, an interaction force is generated between the first magnetic element 21 and the second magnetic element 22, and since the first magnetic element 21 is connected to the valve plug assembly 40, the first magnetic element 21 drives the valve plug to move between the first position and the second position along the guide slot 311 under the interaction of the magnetic field force. In the energized state, the first magnetic element 21 and the second magnetic element 22 may generate a repulsive force, an attractive force, or a switchable force between the repulsive force and the attractive force. The guide groove 311 serves as a guide so that the valve plug assembly 40 can stably move between the first position and the second position under the action of the magnetic force, thereby communicating the first outlet connection pipe 112 or the second outlet connection pipe 121.

As shown in fig. 1 and 8, the magnetism increasing element 50 is disposed on an end surface of the bobbin 31 and surrounds an outer circumference of the first magnetic element 21 to increase a magnetic field interaction force between the first magnetic element and the second magnetic element 22, thereby increasing a stroke of the valve plug assembly 40. Wherein, the stroke of the valve plug assembly 40 should be understood as the distance between the first position and the second position, and it can be understood that, under the same stroke, the greater the interaction force between the first magnetic element 21 and the second magnetic element 22, the greater the abutment force between the valve plug assembly 40 and the first water outlet connection pipe 112 or the second water outlet connection pipe 121, the more stable the abutment; the greater the travel of the valve plug assembly 40 at different strokes, the greater the magnetic force required to ensure stable abutment and sealing of the valve plug assembly 40 with the first outlet connection 112 or the second outlet connection 121. Therefore, the present application can ensure the stable state of the valve plug assembly 40 at the first position and the second position, ensure the sealing performance, and increase the flow area of the water flow when the valve plug assembly 40 is at the first position and the second position, reduce the resistance to the water flow, and effectively inhibit the generation of scale by increasing the distance between the first position and the second position and providing the magnetism increasing element 50 to enhance the interaction force between the first magnetic element 21 and the second magnetic element 22.

According to the utility model discloses solenoid valve 100, increase the stroke of valve plug subassembly 40 through setting up the component of magnetizing 50, when valve plug subassembly 40 is in the first position, the stroke that valve plug subassembly 40 removed is great, the clearance that valve plug subassembly 40 was opened and between first play water takeover 112 is great, and when valve plug subassembly 40 was in the second position, the stroke that valve plug subassembly 40 removed is great, the clearance that valve plug subassembly 40 was opened and between second play water takeover 121 is great, all can reduce the resistance to the rivers, effectively restrain incrustation scale's production, thereby can improve the life of product.

In the above-described embodiment, one of the first magnetic element 21 and the second magnetic element 22 may be a permanent magnet, and the other may be an iron core, or both the first magnetic element 21 and the second magnetic element 22 are permanent magnets, or both the first magnetic element 21 and the second magnetic element 22 are iron cores, or one of the first magnetic element 21 and the second magnetic element 22 may be an electromagnetic coil, and the other is a permanent magnet, or both the first magnetic element 21 and the second magnetic element 22 may be an electromagnetic coil.

In the above embodiment, the magnetizing element 50 may be a ring made of a material suitable for magnetic permeability, such as iron or nickel, and functions to increase the magnetic field.

In some embodiments, as shown in fig. 1, 2, 3, 4 and 5, the valve head 10 includes a first valve body 11 and a second valve body 12, the first valve body 11 defines a first chamber 110, a water inlet connection pipe 111 and a first water outlet connection pipe 112 are formed on the first valve body 11, the second valve body 12 has a second chamber 120, a second water outlet connection pipe 121 is formed on the second valve body 12, the second valve body 12 is provided with a transition port 122 for communicating the first chamber 110 and the second chamber 120, and the transition port 122 is axially opposite to the first water outlet connection pipe 112. The first valve body 11 defines a first chamber 110, the second valve body 12 defines a second chamber 120, the water inlet connection 111 is in constant communication with the first chamber 110, the guide groove 311 extends in an axial direction, and the valve plug assembly 40 is movable in the axial direction to abut against the transition port 122 or against the water inlet of the first water outlet connection 112. The valve plug assembly 40 may extend into the first chamber 110, the valve plug assembly 40 moves in the first chamber 110, when the valve plug assembly 40 is in the first position, the water inlet of the first water outlet pipe 112 is spaced apart from the valve plug assembly 40, the valve plug assembly 40 abuts against the transition port 122 to separate the first chamber 110 from the second chamber 120, so that the water inlet pipe 111 communicates with the first water outlet pipe 112, when the valve plug assembly 40 is in the second position, the valve plug assembly 40 abuts against the water inlet of the first water outlet pipe 112 to prevent the first water outlet pipe 112 from communicating with the first chamber 110, and the valve plug assembly 40 is spaced apart from the transition port 122 to allow the first chamber 110 to communicate with the second chamber 120. Of course, it is also possible for the valve plug assembly 40 to be disposed within the second chamber 120 and not described in further detail herein.

As shown in fig. 1, 6 and 7, the valve plug assembly 40 includes: the first magnetic element 21 defines an axial through hole, the other end of the push rod 41 is provided with an insertion portion, the insertion portion extends into the axial through hole, in the first position, the lower end surface of the sealing plug 42 seals the inlet of the transition port 122, and in the second position, the upper end surface of the sealing plug 42 seals the inlet of the first water outlet connection pipe 112. The sealing plug 42 may be made of a flexible material with elasticity, such as rubber or silicone. Increasing the travel of the valve plug assembly 40 includes, but is not limited to, increasing the degree of deformation of one end surface of the sealing plug 42 to increase the distance between the other end surface and the transition port 122 or the inlet of the first outlet connector 112. It can be understood that by providing the magnetism increasing element 50, the acting force of the sealing plug 42 and the first water outlet connection 112 or the transition port 122 can be increased, so as to increase the local pressure of the sealing plug 42, and thus the deformation degree of the sealing plug 42 is increased.

As shown in fig. 1, 6 and 7, the other end of the push rod 41 is further provided with an annular groove surrounding the insertion portion 411, and the first magnetic element 21 is provided with a connection portion 211, and the connection portion 211 extends into the annular groove. The contact area between the first magnetic element 21 and the push rod 41 can be increased, the movement of the push rod 41 along the circumferential direction can be limited, and the connection stability can be improved.

As shown in fig. 1, 6 and 7, the solenoid valve 100 further includes an elastic spacer 60 having a connection through hole 52, an inner end of the elastic spacer 60 is interposed between the push rod 41 and the end surface of the first magnetic element 21, an outer end of the elastic spacer 60 is interposed between the second valve body 12 and the end surface of the magnetizing element 50, and the connection through hole 52 is in interference fit with the connection portion 211. The elastic spacer 60 is used to separate the second chamber 120 from the first magnetic element 21 to prevent water in the second chamber 120 from flowing to the first magnetic element 21 and the bobbin 31, which may cause short circuit of the coil and improve safety. Wherein, because the connection part 211 is matched with the projection and the groove of the push rod 41, the sealing performance can be further improved.

In the above embodiments, the elastic isolation member 60 is configured in a sheet shape, and the elastic isolation member 60 is sandwiched between the second valve body 12 and the magnetism increasing element 50, in some embodiments, the elastic isolation member 60 may also be sandwiched between the second valve body 12 and the bobbin 31, and may also be integrally formed with the second valve body 12.

As shown in fig. 1 in conjunction with fig. 6 and 7, the elastic spacer 60 has a plurality of wrinkles 61 bent upward or downward. By providing a plurality of corrugations 61, the stiffness of elastomeric isolator 60 may be reduced, the elasticity of elastomeric isolator 60 may be increased, less resistance may be experienced when pushrod 41 is moved away from magnetizing element 50, and corrugations 61 may be stretched to allow axial movement of pushrod 41 when elastomeric isolator 60 follows pushrod 41.

As shown in fig. 1, 3 and 5, the entrance of the transition port 122 is provided with an upwardly projecting lip 123. In this way, the contact area between the transition opening 122 and the sealing plug 42 can be reduced, the local pressure of the sealing plug 42 can be increased, the local deformation of the sealing plug 42 is large, and the lip 123 can be "inserted" into the sealing plug 42, so that the sealing performance of the sealing plug 42 can be improved, and the first cavity and the second cavity can be prevented from being communicated when the valve plug assembly 40 is in the first position.

As shown in fig. 1, 2, 3, 4 and 5, the first valve body 11 and the second valve body 12 are locked by screws 70. The assembly and disassembly can be facilitated by locking with screws 70. Of course, the connection can also be realized by riveting, pin joint, tenon-and-mortise structure connection or welding, which is not described herein again.

As shown in fig. 1 and 7, the push rod 41 is provided with a guiding curved surface 4111. The guiding cambered surface 4111 is disposed at an end of the push rod 41 far away from the sealing plug 42, and can play a guiding role by providing a guiding inclined surface, so that the push rod 41 can be conveniently extended into the first magnetic element 21.

As shown in fig. 1 and 8, one of the end surface of the bobbin 31 and the magnetism increasing element 50 is provided with a positioning protrusion 312, and the other is provided with a positioning hole 51. Thus, the volume of the solenoid valve 100 can be reduced, the mutual movement between the magnetizing element 50 and the bobbin 31 can be restricted, and the assembling efficiency can be improved.

As shown in fig. 1, an elastic member 80 is further disposed between the first magnetic element 21 and the second magnetic element 22, and the elastic member 80 makes the sealing plug 42 normally abut against the water inlet of the first water outlet connection pipe 112 in a natural state, and also makes the sealing plug 42 automatically reset.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A solenoid valve, comprising:

the valve head is provided with a valve cavity and is provided with a water inlet connecting pipe, a first water outlet connecting pipe and a second water outlet connecting pipe;

a spool assembly including a first magnetic element and a second magnetic element;

the magnetic force supply assembly comprises a wire frame, a guide groove is formed in the wire frame, the first magnetic element is arranged at one end of the guide groove, and the second magnetic element is arranged at the other end of the guide groove;

the coil is wound on the periphery of the coil holder, an electromagnetic field is generated in a power-on state, the first magnetic element can axially move relative to the guide groove under the action of magnetic field force, and the second magnetic element is static;

the valve plug assembly is connected to the first magnetic element, and is driven by the first magnetic element to move at a first position for communicating the water inlet connecting pipe with the first water outlet connecting pipe and a second position for communicating the water inlet connecting pipe with the second water outlet connecting pipe;

the magnetism increasing element is arranged on the end face of the wire frame and surrounds the periphery of the first magnetic element so as to enhance the magnetic field interaction force between the first magnetic element and the second magnetic element and further increase the stroke of the valve plug assembly.

2. The solenoid valve according to claim 1, wherein said valve head comprises a first valve body defining a first chamber and a second valve body on which said water inlet connection and said first water outlet connection are formed, said second valve body having a second chamber and a second water outlet connection formed on said second valve body, said second valve body being provided with a transition port for communicating said first chamber and said second chamber, said transition port being axially opposed to said first water outlet connection.

3. The solenoid valve as claimed in claim 2, wherein the valve plug assembly comprises: the water outlet device comprises a push rod and a sealing plug arranged at one end of the push rod, wherein an axial through hole is limited by the first magnetic element, an inserting part is arranged at the other end of the push rod and extends into the axial through hole, the lower end face of the sealing plug seals the inlet of the transition port under the condition of a first position, and the upper end face of the sealing plug seals the inlet of the first water outlet connecting pipe under the condition of a second position.

4. The electromagnetic valve according to claim 3, wherein the other end of the push rod is further provided with an annular groove surrounding the insertion portion, and the first magnetic element is provided with a connecting portion extending into the annular groove.

5. The solenoid valve as claimed in claim 4, further comprising: the elastic isolating piece is provided with a connecting through hole, the inner end of the elastic isolating piece is clamped between the push rod and the end face of the first magnetic element, the outer end of the elastic isolating piece is clamped between the second valve body and the end face of the magnetism increasing element, and the connecting through hole is in interference fit with the connecting portion.

6. The solenoid valve of claim 5 wherein said elastomeric isolator has a plurality of upwardly or downwardly curved pleats.

7. The solenoid valve of claim 3 wherein the inlet of the transition port is provided with an upwardly projecting lip.

8. The solenoid valve of claim 2 wherein said first valve body is keyed to said second valve body by screws.

9. The electromagnetic valve according to claim 3, characterized in that the push rod is provided with a guide arc surface.

10. The electromagnetic valve according to claim 1, wherein one of the end surface of the bobbin and the magnetism increasing member is provided with a positioning projection, and the other is provided with a positioning hole.

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