CN211693533U

CN211693533U - Electromagnetic valve

Info

Publication number: CN211693533U
Application number: CN201921873779.2U
Authority: CN
Inventors: 马小红; 贺宇辰
Original assignee: Zhejiang DunAn Hetian Metal Co Ltd
Current assignee: Zhejiang DunAn Hetian Metal Co Ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-10-16
Anticipated expiration: 2029-11-01

Abstract

The utility model discloses a solenoid valve, including the valve seat, locate the valve gap on the valve seat, and electromagnet assembly; the valve cover is matched with the valve seat and forms a valve cavity together; the valve seat is provided with a first interface, a second interface and a medium passage, the first interface is communicated with the valve cavity through the medium passage, and the second interface is communicated with the valve cavity; the electromagnet assembly comprises a movable iron core, a sealing element is connected to one side end of the movable iron core, a pressure relief hole is formed in the part of the sealing element, and an opening at one end of the pressure relief hole extends to the position where the sealing element is located. The utility model discloses ensure the stability of assembly between sealing member and the movable iron core, have the effect of the roughness of the sealed face of ensureing to be used for sealed medium passageway on the sealing member, and then ensure the sealed effect when movable iron core drives the sealing member to the shutoff of medium passageway for this solenoid valve is applicable to the flow control of high-pressure medium.

Description

Electromagnetic valve

Technical Field

The utility model belongs to the technical field of the flow control technique is relevant, especially, relate to an electromagnetic valve.

Background

An Electromagnetic valve (Electromagnetic valve) is an industrial device controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, and is not limited to hydraulic pressure and pneumatic pressure.

The electromagnetic valve generally comprises an excitation coil, a fixed iron core, a compression spring, a movable iron core, a valve body and other components, and the working principle of the electromagnetic valve is that when the excitation coil is not electrified, a sealing component on the fixed iron core closes the valve under the action of the compression spring and a first interface medium of the valve; when the excitation coil is electrified, the first interface generates electromagnetic force to enable the movable iron core to move towards the fixed iron core until the fixed iron core and the movable iron core are attracted, and the valve is in an open state at the moment.

However, because sealed head and movable core clearance fit for after making the medium pressure in this solenoid valve reach a definite value, for example when being greater than 2MPa, connect in the sealed head pressurized of movable core and warp, part medium can enter into the fit-up gap between sealed head and the movable core this moment, and can be with sealed head jack-up, thereby cause sealed head to be used for sealed face to warp, the slope, extrude movable core with whole sealed head seriously even, thereby cause this solenoid valve during operation, can't seal, reduce the holistic working property of this solenoid valve.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a solenoid valve in order to solve the technical problems in the prior art.

The electromagnetic valve comprises a valve seat, a valve cover arranged on the valve seat and an electromagnet assembly; the valve cover is matched with the valve seat and forms a valve cavity together; the valve seat is provided with a first interface, a second interface and a medium passage, the first interface is communicated with the valve cavity through the medium passage, and the second interface is communicated with the valve cavity; the electromagnet assembly comprises a movable iron core, a sealing element is connected to one end of the movable iron core, and the movable iron core can drive the sealing element to block the medium channel; the movable iron core is connected with a pressure relief hole is formed in the part of the sealing element, and an opening at one end of the pressure relief hole extends to the position where the sealing element is located.

As the preferable scheme of the utility model, the central line of pressure release hole perpendicular to the sealing member.

As the preferred scheme of the utility model, the quantity of pressure release hole is one.

As the utility model discloses an optimal scheme, the storage tank has been seted up on the activity iron core, the sealing member inlays the dress and is in the storage tank of activity iron core, and with the inner wall clearance fit of storage tank.

As the preferred scheme of the utility model, the pressure release hole with the storage tank intercommunication.

As the utility model discloses an optimal scheme, the disk seat is in medium passageway with the interface periphery that the valve pocket is linked together is equipped with sealed bead, movable iron core can drive the sealing member supports to press in on the sealed bead, be used for sealing medium passageway.

As the utility model discloses a preferred scheme, the disk seat is in the position department of first interface connects and is equipped with first takeover the position department of second interface connects and is equipped with the second takeover.

As a preferred embodiment of the present invention, the valve cover is connected to the valve seat in a threaded manner.

As the utility model discloses a preferred scheme, the valve gap with be equipped with the O shape sealing washer between the part that the disk seat contacted, the O shape sealing washer sets up the valve gap with the helicitic texture's that the disk seat is connected top.

As a preferred scheme of the present invention, the electromagnet assembly includes a fixed iron core disposed opposite to the movable iron core, an excitation coil sleeved on the fixed iron core, and a spring; the movable iron core is provided with a groove at one end facing the fixed iron core, the spring is arranged in the groove, and two ends of the spring are respectively abutted against the movable iron core and the fixed iron core.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the utility model provides a solenoid valve, pressure release pore pair on the available movable iron core invades the medium discharge to assembly gap between sealing member and the movable iron core to this ensures the stability of assembly between sealing member and the movable iron core, has the effect of the roughness that is used for the sealed face of sealed medium passageway on guaranteeing the sealing member, and then ensures the sealed effect when movable iron core drives the sealing member and to the shutoff of medium passageway, makes this solenoid valve be applicable to the flow control of high-pressure medium.

Drawings

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

Fig. 2 is an enlarged view of a portion P of fig. 1.

10, a valve seat; 11. a first interface; 110. a first adapter tube; 12. a second interface; 120. a second adapter tube; 13. a media channel; 20. a valve cover; 30. an electromagnet assembly; 31. a movable iron core; 311. a groove; 312. a containing groove; 313. a pressure relief vent; 32. fixing the iron core; 33. a field coil; 34. a spring; 35. A seal member; 101. a valve cavity; 102. an O-shaped sealing ring; 103. and sealing the convex rib.

Detailed Description

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

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used are for the purpose of describing particular embodiments only and are not intended to limit the invention.

Referring to fig. 1 and 2, a solenoid valve according to an embodiment of the present invention includes a valve seat 10, a valve cover 20 disposed on the valve seat 10, and an electromagnet assembly 30.

The valve cover 20 is matched with the valve seat 10 and forms a valve cavity 101 together, the valve seat 10 is provided with a first interface 11, a second interface 12 and a medium passage 13, the first interface 11 is communicated with the valve cavity 101 through the medium passage 13, and the second interface 12 is communicated with the valve cavity 101. When the electromagnetic valve of the present embodiment works, the medium introduced from the second port 12 passes through the valve cavity 101, and then enters the first port 11 through the medium channel 13 to be discharged to the outside, and in this process, the electromagnet assembly 30 can control the on-off of the medium channel 13, thereby further realizing the flow control of the medium passage when the electromagnetic valve works. It should be noted that the communication relationship among the first port 11, the second port 12, the medium passage 13 and the valve chamber 101 is not limited to the above illustration, and those skilled in the art may also communicate the first port 11 with the valve chamber 101 through a bypass hole, and communicate the second port 12 with the valve chamber 101 through the medium passage 13 that can be blocked.

In the present embodiment, the valve cover 20 is threadedly coupled to the valve seat 10, thereby facilitating the assembly coupling between the valve cover 20 and the valve seat 10.

An O-ring 102 is disposed between the portions of the valve cover 20 contacting the valve seat 10, and the O-ring 102 is disposed above the thread structure connecting the valve cover 20 and the valve seat 10 to assemble and seal the valve cover 20 and the valve seat 10, so that a valve cavity 101 formed by the valve cover 20 and the valve seat 10 together is a sealed cavity to prevent a medium introduced into the valve cavity 101 from leaking outwards.

In the present embodiment, the valve seat 10 is connected to a first connection pipe 110 at the position of the first port 11, and connected to a second connection pipe 120 at the position of the second port 12, so as to facilitate connection between the solenoid valve and an external pipeline. In addition, the first connecting pipe 110 and the second connecting pipe 120 of the present embodiment are disposed in a staggered manner, so that the cross-sectional view of the solenoid valve shown in fig. 1 does not cut a portion where the second port 12 communicates with the valve chamber 101.

In the present embodiment, the electromagnet assembly 30 includes a movable iron core 31, a fixed iron core 32 disposed opposite to the movable iron core 31, an excitation coil 33 sleeved on the fixed iron core 32, and a spring 34; the movable iron core 31 is provided with a groove 311 at one end facing the fixed iron core 32, the spring 34 is arranged in the groove 311, and two ends of the spring 34 are respectively abutted against the movable iron core 31 and the fixed iron core 32, so that the inner wall of the groove 311 on the movable iron core 31 is used for limiting the spring 34.

The end part of one side of the movable iron core 31 is connected with a sealing element 35, and the movable iron core 31 can drive the sealing element 35 to selectively block the medium channel 13, so that the channel control of the medium channel when the electromagnetic valve works is realized. The seal 35 is a rubber block.

Specifically, the movable iron core 31 is provided with a receiving groove 312, and the sealing member 35 is embedded in the receiving groove 312 of the movable iron core 31 and is in clearance fit with the inner wall of the receiving groove 312.

In this embodiment, the movable iron core 31 is provided with a pressure relief hole 313 on a portion connected with the sealing element 35, an opening at one end of the pressure relief hole 313 extends to a position where the sealing element 35 is located, that is, the pressure relief hole 313 is communicated with the accommodating groove 312, so that when a medium enters an assembly gap between the sealing element 35 and the movable iron core 31, the medium can be discharged into the valve cavity 101 through the pressure relief hole 313, and a pressure relief effect is further achieved.

The central line of the pressure relief hole 313 is perpendicular to the sealing element 35, so that a medium entering between the sealing element 35 and the movable iron core 31 is discharged outwards through the pressure relief hole 313. It should be understood that the pressure relief hole 313 is not limited to the one shown in the drawings, and those skilled in the art may form the pressure relief hole 313 in another shape according to the usage requirement, and the diameter of the pressure relief hole 313 may be a tapered hole structure that gradually increases from the direction away from the sealing member 35 or another irregular shape according to the usage requirement.

The number of the pressure relief holes 313 in the movable iron core 31 of the present embodiment is one, and it should be noted that the number of the pressure relief holes 313 is not limited to one, and a person skilled in the art can set the number of the pressure relief holes 313 to two, three, or even more according to the use requirement, and an opening at one end of the pressure relief hole 313 extending to the sealing member 35 can be disposed at any position on the sealing member 35 according to the use requirement, and the description is not provided herein.

In this embodiment, the valve seat 10 is provided with a sealing rib 103 at the periphery of a joint where the medium passage 13 communicates with the valve cavity 101, and the movable iron core 31 can drive the sealing element 35 to press against the sealing rib 103 to seal the medium passage 13, so as to ensure the sealing performance of the sealing element 35 on the medium passage 13.

To sum up, the utility model provides a solenoid valve, the medium discharge of pressure release pore pair invasion to assembly gap between sealing member and the movable iron core on the available movable iron core to this ensures the stability of assembly between sealing member and the movable iron core, has the effect of the roughness of the sealed face that is used for sealed medium passageway on guaranteeing the sealing member, and then ensures the sealed effect when movable iron core drives the sealing member to the medium passageway shutoff, makes this solenoid valve be applicable to the flow control of high-pressure medium.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A solenoid valve comprises a valve seat, a valve cover arranged on the valve seat and an electromagnet assembly; the valve cover is matched with the valve seat and forms a valve cavity together; the valve seat is provided with a first interface, a second interface and a medium passage, the first interface is communicated with the valve cavity through the medium passage, and the second interface is communicated with the valve cavity; the method is characterized in that: the electromagnet assembly comprises a movable iron core, a sealing element is connected to one end of the movable iron core, and the movable iron core can drive the sealing element to block the medium channel; the movable iron core is connected with a pressure relief hole is formed in the part of the sealing element, and an opening at one end of the pressure relief hole extends to the position where the sealing element is located.

2. The solenoid valve according to claim 1, wherein: the central line of the pressure relief hole is perpendicular to the sealing element.

3. The solenoid valve according to claim 1, wherein: the number of the pressure relief holes is one.

4. The solenoid valve according to claim 1, wherein: the movable iron core is provided with a containing groove, and the sealing element is embedded in the containing groove of the movable iron core and is in clearance fit with the inner wall of the containing groove.

5. The solenoid valve according to claim 4, wherein: the pressure relief hole is communicated with the accommodating groove.

6. The solenoid valve according to claim 1, wherein: the valve seat is provided with a sealing convex edge at the periphery of a joint where the medium passage is communicated with the valve cavity, and the movable iron core can drive the sealing piece to abut against the sealing convex edge so as to seal the medium passage.

7. The solenoid valve according to claim 1, wherein: the valve seat is provided with a first connecting pipe at the position of the first port, and a second connecting pipe at the position of the second port.

8. The solenoid valve according to claim 1, wherein: the valve cover is threadedly attached to the valve seat.

9. The solenoid valve as set forth in claim 8, wherein: an O-shaped sealing ring is arranged between the parts of the valve cover, which are in contact with the valve seat, and the O-shaped sealing ring is arranged above the threaded structure, which is connected with the valve seat, of the valve cover.

10. The solenoid valve according to claim 1, wherein: the electromagnet assembly comprises a fixed iron core arranged opposite to the movable iron core, an excitation coil sleeved on the fixed iron core and a spring; the movable iron core is provided with a groove at one end facing the fixed iron core, the spring is arranged in the groove, and two ends of the spring are respectively abutted against the movable iron core and the fixed iron core.