CN211315283U

CN211315283U - Reverse-backflow-preventing electromagnetic valve and electromagnetic valve structure

Info

Publication number: CN211315283U
Application number: CN201921589548.9U
Authority: CN
Inventors: 罗江志
Original assignee: Donguan Zhicheng Electrical Appliance Co ltd
Current assignee: Donguan Zhicheng Electrical Appliance Co ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-08-21
Anticipated expiration: 2029-09-23

Abstract

The utility model belongs to the technical field of the fluid control valve, especially, relate to a prevent reverse flow solenoid valve and solenoid valve structure, including the main valve body, electromagnetic component and one-way conduction subassembly, the one-way conduction subassembly includes first sealing rubber circle, check valve main part and check valve back seat, first sealing rubber circle fixed set up in the medium passageway, check valve main part one end with sealing rubber circle contact, the other end of check valve main part with the check valve back seat is connected, the check valve back seat set up in the medium passageway. The utility model discloses will unidirectional flux subassembly slidable install in the medium passage, make when the medium export has pressure, the check valve main part is plugged up the medium passage so that the medium of medium exit end can not flow back extremely in the medium passage, and then reached the effect of preventing the reverse flow, avoided the aqueous vapor series flow, and then protected the inside subassembly of solenoid valve, prolonged the life of solenoid valve.

Description

Reverse-backflow-preventing electromagnetic valve and electromagnetic valve structure

Technical Field

The utility model belongs to the technical field of the fluid control valve, especially, relate to a prevent reverse flow solenoid valve and solenoid valve structure.

Background

The electromagnetic valve is an industrial device controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, and is mainly used for adjusting the direction, flow rate, speed and other parameters of a medium in an industrial control system. The solenoid valve can be matched with different circuits to realize expected control, and the control precision and flexibility can be ensured. The solenoid valve has a lot of, for example chinese intellectual property discloses the utility model patent of grant publication No. CN206572042U, and this patent discloses a two-stage pilot operated solenoid valve for pressure regulator, belongs to the solenoid valve field. The utility model discloses in the power that main valve core opened among the two-stage guide's formula solenoid valve constitute by two parts, firstly the pressure differential that main valve core bore in gas circulation direction, firstly the pulling effort of pin. When pressure difference exists between the upper part and the lower part of the main valve seat, the function of the valve can be realized; when the pressure difference between the upper part and the lower part of the main valve seat is zero, namely when the LNG hybrid vehicle engine is in soft stop, the nozzle stops working, the main valve core can be opened under the action of the lifting force of the pin and is kept in an opened state all the time.

Although the solenoid valve disclosed in the above patent document can reduce the requirement on the durability of the main valve element and improve the service life of the solenoid valve, the solenoid valve still has some disadvantages in the use process, the liquid outlet end of the solenoid valve in the prior art is easy to cause medium backflow, such as gas backflow, so that the problem of water and gas streaming occurs, when the solenoid valve is turned on, water and gas are mixed to generate impact, thereby damaging peripheral parts and components, and reducing the service life of the solenoid valve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent reverse flow solenoid valve and solenoid valve structure, the solenoid valve that aims at solving among the prior art easily takes place the aqueous vapor stream and then damages the technical problem that the solenoid valve caused solenoid valve life to reduce.

In order to achieve the above object, an embodiment of the present invention provides an anti-backflow solenoid valve, including a main valve body, an electromagnetic component and a one-way conduction component, where the electromagnetic component is disposed on one side of the main valve body and partially extends into the main valve body; a medium channel penetrates through and is dug in the main valve body, one end of the medium channel is a medium inlet, and the other end of the medium channel is a medium outlet; a first blocking block is convexly arranged in the medium channel along the direction vertical to the medium channel, a second blocking block is convexly arranged in the medium channel beside the first blocking block along the direction parallel to the medium channel, a middle buffer channel is formed between the first blocking block and the second blocking block, and when the medium channel is not electrified, the electromagnetic assembly blocks the middle buffer channel to make the medium channel not be conducted; the one-way conduction assembly is slidably mounted in the medium channel between the middle buffer channel and the medium outlet and comprises a first sealing rubber ring, a one-way valve main body and a one-way valve rear seat, the first sealing rubber ring is fixedly arranged in the medium channel, one end of the one-way valve main body is in contact with the sealing rubber ring, the other end of the one-way valve main body is connected with the one-way valve rear seat, and the one-way valve rear seat is arranged in the medium channel.

Optionally, the check valve body is further sleeved with an elastic element.

Optionally, the resilient member is a compression spring.

Optionally, two elastic piece fixing portions are further arranged on the inner wall of the medium channel, which is close to the first sealing rubber ring.

Optionally, the two elastic element fixing portions are symmetrically arranged, and the two elastic element fixing portions are in contact with the elastic element.

Optionally, the first blocking block and the second blocking block are both provided with conical sealing portions, and the two conical sealing portions are symmetrically arranged.

Optionally, a second sealing ring is sleeved on two of the conical sealing parts.

Optionally, the electromagnetic assembly includes a seat frame, an electromagnet, a coil, and a solenoid valve spring, the seat frame is disposed beside the main valve body and connected to the main valve body, the electromagnet is disposed in the middle of the seat frame, two sides of the coil are disposed on two sides of the electromagnet, and the solenoid valve spring is disposed at one end of the electromagnet; when the power is not on, the electromagnet blocks the middle buffer channel.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in preventing among the reverse flow solenoid valve have one of following technological effect at least: the utility model discloses will unidirectional flux subassembly slidable install in middle part buffer passage with between the medium export in the medium channel, make when the medium export has pressure, the check valve main part is plugged up medium channel is so that the medium of medium exit end can not flow back extremely in the medium channel, and then has reached the effect of preventing the backward flow to avoid the condition of aqueous vapor series flow, also can not harm the solenoid valve inner assembly because of the aqueous vapor series flow, and then the life of extension solenoid valve.

In order to achieve the above object, the embodiment of the present invention further provides an electromagnetic valve structure, which includes the above-mentioned reverse-flow-preventing electromagnetic valve, the number of the reverse-flow-preventing electromagnetic valves is two.

Optionally, the solenoid valve structure further comprises a communicating pipe, and an inlet of the communicating pipe is connected with the medium inlets of the two anti-reverse-flow solenoid valves respectively.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the solenoid valve structure have one of following technological effect at least: when the anti-reverse-flow electromagnetic valve is powered on, the medium channel of one anti-reverse-flow electromagnetic valve is conducted, the anti-reverse-flow electromagnetic valve enables liquid to the communicating pipe and flow out from the outlet of the communicating pipe, at the moment, the medium outlet of the other anti-reverse-flow electromagnetic valve receives pressure to enable the one-way valve body to block the medium channel, so that gas cannot flow to the communicating pipe from the anti-reverse-flow electromagnetic valve, the situation of water-air streaming is avoided, the internal components of the electromagnetic valve are protected, and the service life of the electromagnetic valve is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic view of an overall structure of an anti-backflow solenoid valve provided in an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of A in FIG. 1;

FIG. 3 is an enlarged view of B in FIG. 1;

fig. 4 is an overall structural schematic diagram of the electromagnetic valve structure provided by the embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

main valve body 100 solenoid assembly 200 mount 210

Solenoid valve spring 240 of electromagnet 220 coil 230

One-way conduction assembly 300 first sealing rubber ring 310 one-way valve body 320

Media passage 400 of resilient member 340 of check valve backseat 330

Media inlet 410 media outlet 420 first stop 430

Conical seal 431 and second gasket 432 and second stop 440

Middle buffer channel 450 elastic piece fixing part 460 solenoid valve structure 500

Communicating pipe 510

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 by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the 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 one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1 to 3, an anti-reverse-flow electromagnetic valve is provided, which includes a main valve body 100, an electromagnetic component 200 and a one-way conduction component 300, wherein the electromagnetic component 200 is disposed on one side of the main valve body 100 and partially extends into the main valve body 100. A medium channel 400 is dug in the main valve body 100, one end of the medium channel 400 is a medium inlet 410, and the other end of the medium channel 400 is a medium outlet 420. A first stop block 430 is convexly arranged in the medium channel 400 along a direction perpendicular to the medium channel 400, a second stop block 440 is convexly arranged in the medium channel 400 beside the first stop block 430 along a direction parallel to the medium channel 400, and a middle buffer channel 450 is formed between the first stop block 430 and the second stop block 440. When not powered on, the electromagnetic assembly 200 blocks the middle buffer passage 450 to make the medium passage 400 non-conductive. The one-way valve assembly 300 is slidably mounted in the media passage 400 between the middle buffer passage 450 and the media outlet 420. Further, the one-way conduction assembly 300 includes a first sealing rubber ring 310, a one-way valve main body 320 and a one-way valve rear seat 330, the first sealing rubber ring 310 is fixedly disposed in the medium passage 400, one end of the one-way valve main body 320 is in contact with the sealing rubber ring 310, the other end of the one-way valve main body 320 is connected with the one-way valve rear seat 330, and the one-way valve rear seat 330 is disposed in the medium passage 400. The utility model discloses will unidirectional flux subassembly 300 slidable install in middle part buffer passage 450 with between the medium export 420 in the medium channel 400, make when medium export 420 has pressure, the check valve main part 320 is plugged up medium channel 400 so that the medium of medium export 420 end can not flow back extremely in the medium channel 400, and then reached and prevented the effect of backward flow to avoid the circumstances of aqueous vapor series flow, also can not harm the solenoid valve inner assembly because of aqueous vapor series flow, and then the life of extension solenoid valve.

In another embodiment of the present invention, as shown in fig. 1 and 3, an elastic member 340 is further sleeved on the check valve main body 320.

Further, the elastic member 340 is a compression spring.

In another embodiment of the present invention, as shown in fig. 1 and 3, two elastic member fixing portions 460 are further provided on the inner wall of the medium passage 400 near the first rubber seal ring 310.

Further, the two elastic element fixing portions 460 are symmetrically disposed, and the two elastic element fixing portions 460 are in contact with the elastic element 340. The elastic member fixing portion 460 is configured to fix the elastic member 340, and when the medium outlet 420 has pressure, the pressure pushes the check valve main body 320 to move along the medium passage 400 until the check valve main body abuts against the first rubber seal ring 310, and at this time, the elastic member fixing portion 460 plays a role in blocking the elastic member main body 320 and is matched with the first rubber seal ring 310, so that the sealing effect is good.

In another embodiment of the present invention, as shown in fig. 1 and 2, the first blocking block 430 and the second blocking block 440 are both provided with tapered sealing portions 431, and the tapered sealing portions 431 are symmetrically disposed.

Further, a second sealing ring 432 is sleeved on the two conical sealing portions 431. The second seal ring 432 is used to improve sealing performance when the medium passage 400 is not opened.

In another embodiment of the present invention, as shown in fig. 1, the electromagnetic assembly 200 includes a seat frame 210, an electromagnet 220, a coil 230 and a solenoid valve spring 240, the seat frame 210 is disposed at the side of the main valve body 100 and connected to the main valve body 100, the electromagnet 220 is disposed at the middle of the seat frame 210, two sides of the coil 230 are disposed at two sides of the electromagnet 220, and the solenoid valve spring 240 is disposed at one end of the electromagnet 220. When not powered, the electromagnet 220 blocks the middle buffer passage 400. When the electromagnet 220 is powered on, the medium channel 400 is conducted, and the medium inlet 410 is communicated with the medium outlet 420. In this embodiment, the electromagnetic assembly 200 is a mature and formed technology in the prior art, and a person skilled in the art should know and understand the principle thereof, so that the principle of the electromagnet 220 moving upward when the electromagnet is powered on is not described in detail in this application.

In order to achieve the above object, an embodiment of the present invention further provides a solenoid valve structure 500, please refer to fig. 1 and fig. 4, where the solenoid valve structure 500 includes the above anti-reverse-flow solenoid valve, and the number of the anti-reverse-flow solenoid valves is two. The two anti-reverse-flow solenoid valves are a first anti-reverse-flow solenoid valve 520 and a second anti-reverse-flow solenoid valve 530, respectively, the first anti-reverse-flow solenoid valve 520 is a solenoid valve for controlling water circulation, and the second anti-reverse-flow solenoid valve 530 is a solenoid valve for controlling gas circulation.

Further, the solenoid valve structure further includes a communication pipe 510, and an inlet of the communication pipe 510 is connected to the medium inlets of the two anti-reverse-flow solenoid valves, respectively. When the power is turned on, the medium passage of the first anti-reverse-flow electromagnetic valve 520 is firstly conducted, water flows from the medium passage 400 of the first anti-reverse-flow electromagnetic valve 520 to the communicating pipe 510 and flows out from the outlet of the communicating pipe 510, at this time, the medium outlet of the second anti-reverse-flow electromagnetic valve 530 is pressurized, the check valve main body 320 of the second anti-reverse-flow electromagnetic valve 530 is abutted against the first sealing rubber ring 310, so that the medium passage of the second anti-reverse-flow electromagnetic valve 530 is not conducted, the situation of water-air streaming is avoided, the internal components of the electromagnetic valve are protected, and the service life of the electromagnetic valve is prolonged.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The anti-reverse-flow electromagnetic valve is characterized by comprising a main valve body, an electromagnetic assembly and a one-way conduction assembly, wherein the electromagnetic assembly is arranged on one side of the main valve body and partially extends into the main valve body; a medium channel penetrates through and is dug in the main valve body, one end of the medium channel is a medium inlet, and the other end of the medium channel is a medium outlet; a first blocking block is convexly arranged in the medium channel along the direction vertical to the medium channel, a second blocking block is convexly arranged in the medium channel beside the first blocking block along the direction parallel to the medium channel, a middle buffer channel is formed between the first blocking block and the second blocking block, and when the medium channel is not electrified, the electromagnetic assembly blocks the middle buffer channel to make the medium channel not be conducted; the one-way conduction assembly is slidably mounted in the medium channel between the middle buffer channel and the medium outlet and comprises a first sealing rubber ring, a one-way valve main body and a one-way valve rear seat, the first sealing rubber ring is fixedly arranged in the medium channel, one end of the one-way valve main body is in contact with the sealing rubber ring, the other end of the one-way valve main body is connected with the one-way valve rear seat, and the one-way valve rear seat is arranged in the medium channel.

2. An anti-backflow solenoid valve as claimed in claim 1, wherein an elastic member is further provided around the check valve body.

3. An anti-reverse flow solenoid valve as recited in claim 2 wherein said resilient member is a compression spring.

4. An anti-reverse-flow electromagnetic valve according to claim 2, wherein two elastic member fixing portions are further provided in the medium passage adjacent to the inner wall of the passage of the first sealing rubber ring.

5. An anti-reverse-flow electromagnetic valve according to claim 4, wherein the two elastic member fixing portions are symmetrically disposed and are in contact with the elastic member.

6. An anti-backflow solenoid valve according to claim 1, wherein the first blocking block and the second blocking block are provided with tapered sealing portions, and the tapered sealing portions are symmetrically arranged.

7. An anti-backflow solenoid valve as claimed in claim 6, wherein a second sealing ring is sleeved on both of said tapered sealing portions.

8. An anti-backflow solenoid valve according to claim 1, wherein said solenoid assembly comprises a seat frame, an electromagnet, a coil and a solenoid valve spring, said seat frame being disposed beside and connected to said main valve body, said electromagnet being disposed in the middle of said seat frame, both sides of said coil being disposed on both sides of said electromagnet, said solenoid valve spring being disposed at one end of said electromagnet; when the power is not on, the electromagnet blocks the middle buffer channel.

9. A solenoid valve structure characterized by comprising the reverse-flow prevention solenoid valve as recited in any one of claims 1 to 8, the number of the reverse-flow prevention solenoid valves being two.

10. The solenoid valve structure according to claim 9, further comprising a communication pipe, wherein inlets of the communication pipe are respectively connected to the medium inlets of the two anti-backflow solenoid valves.