CN220850754U

CN220850754U - Small electromagnetic valve

Info

Publication number: CN220850754U
Application number: CN202322549977.6U
Authority: CN
Inventors: 蔡晓晓; 林会; 孔万峰; 颜小小; 周宇; 王东
Original assignee: Zhejiang Meishuo Electric Technology Co ltd
Current assignee: Zhejiang Meishuo Electric Technology Co ltd
Priority date: 2023-09-19
Filing date: 2023-09-19
Publication date: 2024-04-26
Anticipated expiration: 2033-09-19

Abstract

The utility model discloses a small electromagnetic valve, comprising: the valve body is internally provided with a valve cavity, and two sides of the valve cavity are respectively provided with a water inlet and a water outlet; the electromagnetic mechanism comprises a coil, a movable iron core, a static iron core and a resetting piece; the guide rod comprises a fixing part, the fixing part is of an I-shaped structure, and the coil and the fixing part are connected in a filling and sealing manner to form a coil assembly; the guide rod is internally provided with a cavity communicated with the valve cavity, the static iron core and the resetting piece are both positioned in the cavity, one end of the movable iron core extends into the cavity, the other end of the movable iron core extends into the valve cavity, and two ends of the resetting piece are respectively propped against the static iron core and the movable iron core. The structure of the coil framework is directly arranged on the guide rod, the coil framework is omitted, the coil is directly wound on the fixing part, the fixing effect of the coil is realized, and parts are saved, so that the size of the electromagnetic valve is reduced; then, the coil component is formed through encapsulation, so that the coil component has the effects of insulation, sealing, strength increase and the like.

Description

Small electromagnetic valve

Technical Field

The utility model relates to the technical field of electromagnetic valves, in particular to a small electromagnetic valve.

Background

Solenoid valves (Solenoid valve) are solenoid-operated industrial equipment, are automated basic components for controlling fluids, and are actuators, not limited to hydraulic and pneumatic. For example, chinese patent publication No. CN109654237A, entitled "Low pressure Water inlet anti-blocking wastewater solenoid valve", discloses a solenoid valve in low pressure state.

The problem in the prior art is that the solenoid valve includes a bobbin around which a coil is wound. A first cavity is arranged in the coil framework, and the guide rod extends into the first cavity. The guide rod is internally provided with a second cavity, and the movable iron core and the static iron core are positioned in the second cavity. In the design process, in order to ensure that the guide rod can smoothly extend into the first cavity, the size of the first cavity is larger, so that the size of the whole coil framework is increased, and the size of the whole electromagnetic valve is influenced. How to reduce the volume of the electromagnetic valve is a technical problem which is solved continuously by the person skilled in the art.

Disclosure of utility model

Therefore, the technical problem to be solved by the utility model is to overcome the problem of how to reduce the volume of the electromagnetic valve. To this end, the present utility model provides a small-sized solenoid valve comprising:

the valve body is internally provided with a valve cavity, and the two sides of the valve cavity are respectively provided with a water inlet and a water outlet;

The electromagnetic mechanism comprises a coil, a movable iron core, a static iron core and a resetting piece;

The guide rod comprises a fixing part, the fixing part is of an I-shaped structure, and the coil and the fixing part are connected in a filling and sealing mode to form a coil assembly; the guide rod is internally provided with a cavity communicated with the valve cavity, the static iron core and the reset piece are both positioned in the cavity, one end of the movable iron core extends into the cavity, the other end of the movable iron core extends into the valve cavity, and two ends of the reset piece are respectively propped against the static iron core and the movable iron core.

The coil assembly is characterized in that one of the bottom surface of the fixing part and the bottom surface of the coil assembly is provided with a step protrusion, and the other one of the bottom surface of the fixing part and the bottom surface of the coil assembly is provided with a step groove matched with the step protrusion.

The top surface of the fixing part is provided with a notch, and the coil assembly extends into the notch.

The cavity is provided with an upper opening, the static iron core seals the upper opening, and a first sealing piece is arranged between the static iron core and the cavity.

The novel sealing device comprises a guide rod, a valve cavity and a sealing plate, wherein one of the bottom surface of the guide rod and the valve cavity is provided with a first protrusion, the other one of the bottom surface of the guide rod and the valve cavity is provided with a first groove matched with the first protrusion, and a second sealing element is arranged between the first protrusion and the first groove.

And a flange is arranged on the second sealing element, and the top surface of the flange is propped against the first bulge.

The movable iron core is connected with the valve cavity through a connecting rod.

The fixing frame comprises an upper part, a lower part and a connecting part, wherein the upper part is connected with the lower part through the connecting part; the guide rod is provided with a clamping groove, the lower part extends into the clamping groove, and the lower part is connected with the valve body; the bottom surface of upper portion with coil pack's top surface laminating.

One of the upper part and the top surface of the coil assembly is provided with a positioning block, and the other one of the upper part and the top surface of the coil assembly is provided with a positioning groove matched with the positioning block.

The water inlet and the water outlet are both quick connectors.

The technical scheme of the utility model has the following advantages:

1. The small electromagnetic valve provided by the utility model has the advantages that the coil framework is eliminated, the coil is directly wound on the fixing part, the fixing effect of the coil is realized, and the parts are saved, so that the volume of the electromagnetic valve is reduced; then, the coil component is formed through encapsulation, so that the coil component has the effects of insulation, sealing, strength increase and the like. In the non-electrified state, the movable iron core seals a channel between the water inlet and the water outlet; under the power-on state, the coil acts, the movable iron core is attracted by the static iron core to move towards the static iron core, the reset piece deforms to store energy, and at the moment, the movable iron core opens a channel between the water inlet and the water outlet.

2. According to the small electromagnetic valve provided by the utility model, the connection strength between the stepped bulge and the stepped groove is more stable by matching the stepped bulge with the stepped groove.

3. The notch of the small electromagnetic valve provided by the utility model also improves the connection strength between the small electromagnetic valve and the notch.

4. According to the small electromagnetic valve provided by the utility model, the upper opening of the cavity is arranged, so that the installation is more convenient, and the first sealing element prevents liquid or external dust from entering the cavity, so that the actual working effect of the electromagnetic valve is affected.

5. According to the small electromagnetic valve provided by the utility model, the first bulge, the first groove and the second sealing piece form sealing connection between the guide rod and the valve cavity, so that leakage is prevented.

6. According to the small electromagnetic valve provided by the utility model, the flange is arranged, when the first bulge is abutted against the flange, the flange is deformed, so that the sealing effect is better realized, and the sealing grade is improved.

7. According to the small electromagnetic valve provided by the utility model, the fixing frame has the clamping and fixing effects, and the fixing strength of the guide rod and the coil assembly is improved.

8. According to the small electromagnetic valve provided by the utility model, the positioning block is matched with the positioning groove, so that the positioning and fixing effects are achieved, and the convenience of installation is improved.

9. According to the small electromagnetic valve provided by the utility model, through the arrangement of the quick connector, the water inlet and the water outlet of the electromagnetic valve can be changed into the size of the PE pipe, and the PE pipe can extend into the water inlet and the water outlet to be connected.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a small solenoid valve according to the present utility model;

FIG. 2 is a cross-sectional view of a small solenoid valve according to the present utility model

Fig. 3 is a partial enlarged view of a portion a in fig. 2.

Reference numerals illustrate:

11. Valve body the method comprises the steps of carrying out a first treatment on the surface of the; 12. a movable iron core; 13. a stationary core; 14. a reset member; 15. a guide rod; 16. a coil assembly; 17. a step protrusion; 18. a step groove; 19. a first seal; 20. a first protrusion; 21. a first groove; 22. a second seal; 23. a plug; 24. a fixing frame; 25. a positioning block; 26. a positioning groove; 111. a valve cavity; 112. a water inlet; 113. a water outlet; 151. a fixing part; 152. a chamber; 153. a notch; 154. an upper opening; 155. a clamping groove; 221. a flange; 241. an upper part; 242. a lower part; 243. a connection part;

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

This embodiment provides a small-sized solenoid valve, as shown in fig. 1-2, comprising:

The valve body 11 is internally provided with a valve cavity 111, two sides of the valve cavity 111 are respectively provided with a water inlet 112 and a water outlet 113, an external waterway enters the valve cavity 111 through the water inlet 112 and is then discharged to the outside through the water outlet 113, and the electromagnetic valve is controlled to act through the movable iron core 12, so that the effect of opening or closing is realized.

The electromagnetic mechanism comprises a coil, a movable iron core 12, a static iron core 13 and a reset piece 14, wherein the coil is connected with a circuit, and the coil is electrified to generate a magnetic field. The movable iron core 12 is matched with the static iron core 13 to form the effect of relative movement. The resetting piece 14 is positioned between the movable iron core 12 and the static iron core 13, and has a resetting effect.

The guide rod 15 comprises a fixing part 151, the fixing part 151 is of an I-shaped structure, a coil is connected with the fixing part 151 in a filling and sealing mode to form a coil assembly 16, the coil is connected with the fixing part 151 through a filling and sealing glue, the coil and the fixing part are integrally formed, and the fixing part 151 is a coil skeleton in the prior art.

The guide rod 15 is provided with a chamber 152 which is communicated with the valve cavity 111, when the valve cavity 111 is positioned below, the chamber 152 is positioned above, and the chamber 152 is arranged with a lower opening, so that the two chambers are in a communicated state. The static iron core 13 and the resetting piece 14 are both located in the cavity 152, in this embodiment, the static iron core 13 is located above, and the resetting piece 14 is located between the static iron core 13 and the movable iron core 12. The movable iron core 12 is located at the lowest part, one end of the movable iron core 12 extends into the cavity 152 to prop against the reset piece 14, the other end of the movable iron core 12 extends into the valve cavity 111, and the other end of the movable iron core 12 is used for opening or closing the communication between the water inlet 112 and the water outlet 113. The reset piece 14 is positioned between the movable iron core 12 and the static iron core 13, and two ends of the reset piece 14 respectively prop against the static iron core 13 and the movable iron core 12. The structure of the coil framework is directly arranged on the guide rod 15, the coil framework is omitted, the coil is directly wound on the fixing part 151, the fixing effect of the coil is realized, and parts are saved, so that the volume of the electromagnetic valve is reduced; the coil assembly 16 is then formed by potting, so that the coil assembly 16 has the effects of insulation, sealing, strength enhancement, and the like. In the unpowered state, the movable iron core 12 closes the passage between the water inlet 112 and the water outlet 113; in the energized state, the coil acts, the movable iron core 12 is attracted by the static iron core 13 to move towards the static iron core 13, the reset piece 14 deforms to store energy, and at the moment, the movable iron core 12 opens a channel between the water inlet 112 and the water outlet 113.

Specifically, as shown in fig. 1-2, a stepped protrusion 17 is provided on one of the bottom surface of the fixing portion 151 and the bottom surface of the coil block 16, and a stepped recess 18 is provided on the other of the bottom surface of the fixing portion 151 and the bottom surface of the coil block 16, which is engaged with the stepped protrusion 17. When the stepped protrusion 17 is located on the bottom surface of the fixing portion 151, the stepped recess 18 is located on the bottom surface of the coil block 16. When the stepped groove 18 is located on the bottom surface of the fixing portion 151, the stepped protrusion 17 is located on the bottom surface of the coil assembly 16. The cooperation of the stepped bulge 17 and the stepped groove 18 increases the contact area, so that the connection strength between the stepped bulge and the stepped groove after encapsulation is more stable. Further, the bottom surface of the fixing portion 151 and the bottom surface of the coil block 16 are disposed coplanar. The stepped protrusions 17/stepped recesses 18 on the coil block 16 here are embodied as a structure formed by potting adhesive. In addition to this embodiment, in order to increase the contact area between the fixing portion 151 and the coil assembly 16, structures like ribs and grooves may be provided, so that the potting adhesive is better adhered.

Specifically, as shown in fig. 1-2, a notch 153 is provided on the top surface of the fixing portion 151, and the coil assembly 16 extends into the notch 153. The coil assembly 16 is also a potting compound extending into the gap 153 to form a fixing effect. The notch 153 also improves the strength of the connection between the two.

Specifically, as shown in fig. 1-2, the chamber 152 is provided with an upper opening 154, i.e., the chamber 152 is vertically disposed therethrough. The stationary core 13 is fixed in the chamber 152, and the stationary core 13 closes the upper opening 154. Further, a first seal 19 is provided between the stationary core 13 and the chamber 152. The upper opening 154 of the cavity 152 is provided, so that the installation is more convenient, the static iron core 13 stretches into and is fixed from the upper side, and the movable iron core 12 and the reset piece 14 stretch into from the lower side of the cavity 152. And the first seal 19 prevents liquid or external dust from entering the chamber 152, affecting the actual working effect of the solenoid valve. The first seal 19 is here a sealing ring.

Specifically, as shown in fig. 2-3, one of the bottom surface of the guide rod 15 and the valve cavity 111 is provided with a first protrusion 20, and the other of the bottom surface of the guide rod 15 and the valve cavity 111 is provided with a first groove 21 matched with the first protrusion 20, when the first protrusion 20 is located on the guide rod 15, the first groove 21 is located in the valve cavity 111, and when the first groove 21 is located on the guide rod 15, the first protrusion 20 is located in the valve cavity 111. In the present embodiment, only the first bump 20 is described as being located on the guide bar 15. The lower end of the guide rod 15 extends into the valve cavity 111, the first protrusion 20 is located on the bottom surface of the guide rod 15, and a first groove 21 is provided in the valve cavity 111. A second seal 22 is provided between the first protrusion 20 and the first recess 21. The first projection 20, the first groove 21, and the second seal 22 form a sealed connection between the guide rod 15 and the valve chamber 111, preventing leakage.

Specifically, as shown in fig. 2-3, the second sealing member 22 is provided with a flange 221, where the flange 221 may have a ring structure, or may have a stepped ring structure. The top surface of the flange 221 abuts against the first protrusion 20. In this embodiment, a side of the first protrusion 20 facing the second sealing member 22 is a plane, and a bottom surface of the first protrusion 20 has a size larger than a size of the flange 221, where the size refers to a width specifically. When the first protrusion 20 abuts against the flange 221, the flange 221 deforms, so that a sealing effect is better achieved, and the sealing grade is improved. The second seal 22 is made of rubber.

Specifically, as shown in fig. 2, the valve further includes a plug 23, and the plug 23 is linked with one end of the movable iron core 12 extending to the valve cavity 111. The plug 23 is used for closing the communication between the water inlet 112 and the water outlet 113. In this embodiment, the plug 23 is made of rubber, so as to improve the sealing effect.

Specifically, as shown in fig. 1-2, the fixing frame 24 is further included, the fixing frame 24 includes an upper portion 241, a lower portion 242, and a connecting portion 243, the upper portion 241 is connected to the lower portion 242 through the connecting portion 243, and the three are connected to form a U-shaped structure, but the U-shaped opening of the fixing frame is horizontally oriented to a side, and may be specifically a right side. The guide rod 15 is provided with a clamping groove 155, the lower part 242 extends into the clamping groove 155, and the lower part 242 is clamped with the clamping groove 155 to achieve the effect of pre-positioning and fixing. The lower part 242 is also fixedly connected with the valve body 11, so as to form a fixing effect between the valve body 11 and the fixing frame 24. The upper portion 241 is located above the whole, and the bottom surface of the upper portion 241 is attached to the top surface of the coil assembly 16. The fixing frame 24 has the clamping and fixing effects, and the fixing strength of the guide rod 15 and the coil assembly 16 is improved.

Specifically, the upper portion 241 abuts against the top surface of the static iron core 13, and the upper portion 241 of the fixing frame 24 cooperates with the cavity 152 to form a fixing effect of the static iron core 13, so that the static iron core 13 is prevented from moving axially.

Specifically, one of the upper portion 241 and the top surface of the coil assembly 16 is provided with a positioning block 25, and the other of the upper portion 241 and the top surface of the coil assembly 16 is provided with a positioning groove 26 engaged with the positioning block 25. When the positioning block 25 is positioned on the upper portion 241, the positioning groove 26 is positioned on the top surface of the coil assembly 16. When the positioning block 25 is positioned on the top surface of the coil assembly 16, the positioning groove 26 is positioned on the upper portion 241. The locating block 25 and the locating groove 26 are matched, so that the locating and fixing effects are achieved, and the installation convenience is improved.

Specifically, the water inlet 112 and the water outlet 113 are both quick connectors. According to the small electromagnetic valve provided by the utility model, through the arrangement of the quick connector, the water inlet 112 and the water outlet 113 of the electromagnetic valve can be changed into the size of the PE pipe, and the PE pipe can extend into the water inlet 112 and the water outlet 113 to be connected. The specific structure of the quick connector is the prior art, so the description of this embodiment is omitted.

Specifically, the fixing frame 24 is in bolt connection with the valve body 11. Through bolted connection, make both connect more convenient. The lower portion 242 is here embodied as a bolted connection to the valve body 11.

Specifically, the restoring member 14 is a spring or other elastic material.

In addition, it should be noted that, in this embodiment, the description is not given as to how the movable iron core 12 moves to achieve the communication or the sealing of the water inlet 112 and the water outlet 113.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims

1. A small-sized solenoid valve, comprising:

The valve body (11) is internally provided with a valve cavity (111), and a water inlet (112) and a water outlet (113) are respectively arranged on two sides of the valve cavity (111);

The electromagnetic mechanism comprises a coil, a movable iron core (12), a static iron core (13) and a reset piece (14);

The guide rod (15), the guide rod (15) comprises a fixing part (151), the fixing part (151) is of an I-shaped structure, and the coil and the fixing part (151) are connected in a potting mode to form a coil assembly (16); the guide rod (15) is internally provided with a cavity (152) communicated with the valve cavity (111), the static iron core (13) and the reset piece (14) are both positioned in the cavity (152), one end of the movable iron core (12) extends to the cavity (152), the other end of the movable iron core (12) extends to the valve cavity (111), and two ends of the reset piece (14) are respectively abutted against the static iron core (13) and the movable iron core (12).

2. The small-sized type solenoid valve according to claim 1, wherein a stepped protrusion (17) is provided on one of a bottom surface of the fixed portion (151) and a bottom surface of the coil block (16), and a stepped recess (18) which is fitted to the stepped protrusion (17) is provided on the other of the bottom surface of the fixed portion (151) and the bottom surface of the coil block (16).

3. The small-sized solenoid valve according to claim 1, wherein a notch (153) is provided on a top surface of the fixed portion (151), and the coil block (16) extends into the notch (153).

4. The small-sized solenoid valve according to claim 1, characterized in that said chamber (152) is provided with an upper opening (154), said stationary core (13) closing said upper opening (154), a first seal (19) being provided between said stationary core (13) and said chamber (152).

5. The small-sized form factor electromagnetic valve according to claim 1, characterized in that a first protrusion (20) is provided on one of the bottom surface of the guide rod (15) and the valve chamber (111), a first groove (21) that mates with the first protrusion (20) is provided on the other of the bottom surface of the guide rod (15) and the valve chamber (111), and a second sealing member (22) is provided between the first protrusion (20) and the first groove (21).

6. The small-sized form factor solenoid valve according to claim 5, wherein a flange (221) is provided on said second seal member (22), and a top surface of said flange (221) abuts against said first protrusion (20).

7. The small-sized form factor solenoid valve according to claim 1, further comprising a plug (23), the plug (23) being interlocked with an end of the plunger (12) extending to the valve chamber (111).

8. The small-sized form factor electromagnetic valve according to claim 1, further comprising a fixing frame (24), the fixing frame (24) including an upper portion (241), a lower portion (242), and a connecting portion (243), the upper portion (241) being connected to the lower portion (242) through the connecting portion (243); a clamping groove (155) is formed in the guide rod (15), the lower portion (242) extends into the clamping groove (155), and the lower portion (242) is connected with the valve body (11); the bottom surface of the upper part (241) is attached to the top surface of the coil block (16).

9. The small-sized form factor electromagnetic valve according to claim 8, characterized in that a positioning block (25) is provided on one of the upper portion (241) and the top surface of the coil block (16), and a positioning groove (26) that mates with the positioning block (25) is provided on the other of the upper portion (241) and the top surface of the coil block (16).

10. The small-sized form factor solenoid valve according to claim 1, characterized in that said water inlet (112) and said water outlet (113) are both quick-connect arrangements.