CN211574324U

CN211574324U - Electromagnetic valve

Info

Publication number: CN211574324U
Application number: CN201922306242.4U
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Automotive Components Co Ltd
Current assignee: Zhejiang Sanhua Automotive Components Co Ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-25
Anticipated expiration: 2029-12-19

Abstract

The utility model provides an electromagnetic valve, which comprises a valve body and a valve core, wherein the valve body is internally provided with a valve cavity and a valve port, and the valve core can move to be close to and close to block the valve port or be far away from and open the valve port; the electromagnetic valve comprises a sealing element, the sealing element comprises a first sealing part and a second sealing part, the first sealing part is positioned on the outer side of the second sealing part, the valve body comprises a first valve body and a second valve body, the first valve body and the second valve body are arranged in a split mode, the first sealing part is positioned at the connecting position of the first valve body and the second valve body, and the first sealing part is in a compression state; the second sealing part is provided with a through hole penetrating through the second sealing part, a part of the through hole forms a valve port, and the valve core can contact the two sealing parts and block the valve port. The scheme aims at the position of the split type arrangement of the electromagnetic valve body, and the outer sealing can be realized and the inner sealing can also be realized by arranging the sealing piece.

Description

Electromagnetic valve

Technical Field

The utility model relates to a fluid control technical field, concretely relates to solenoid valve.

Background

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electromagnetic water valve.

This electromagnetism water valve includes valve casing 01, and valve casing 01 forms the valve pocket, and its inside valve rod that sets up, the tip of valve rod set up the last valve plug of axial interval certain distance and lower valve plug 05, and valve casing 01 still forms import pipe 03 and outlet pipe 02. The lower end of the valve housing 01 is provided with a connection pipe 04, and the connection pipe 04 is used as an outlet pipe.

The specific working principle is that the valve rod moves up under the action of the coil, the upper valve plug seals the upper valve port, the passage between the outlet pipe 02 and the inlet pipe 03 is disconnected, the lower valve port (formed on the sealing element 07) is opened, and the cooling medium enters the interface pipe 04 through the first channel 03 and the lower valve port and flows out. The valve rod moves downwards, the lower valve plug blocks the lower valve port, and the cooling medium flows out through the inlet pipe 03, the lower valve port and the outlet pipe 02.

As shown in fig. 1, the mouthpiece 04 is abutted against the valve housing 01, and a seal ring is provided at the abutting position to seal the mouthpiece externally, that is, as shown by a portion a in fig. 1. Therefore, the electromagnetic water valve needs to be provided with more sealing elements.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a solenoid valve, the solenoid valve includes a valve body and a valve core, a valve cavity and a valve port are arranged in the valve body, the valve core can move to close to and block the valve port, or to keep away from and open the valve port; the electromagnetic valve comprises a sealing element, the sealing element comprises a first sealing part and a second sealing part, the first sealing part is positioned on the outer side of the second sealing part, the valve body comprises a first valve body and a second valve body, the first valve body and the second valve body are arranged in a split mode, the first sealing part is positioned at the connecting position of the first valve body and the second valve body, and the first sealing part is in a compression state; the second sealing part is provided with a through hole penetrating through the second sealing part, a part of the through hole forms a valve port, and the valve core can contact the two sealing parts and block the valve port. The scheme aims at the position of the split type arrangement of the electromagnetic valve body, and the outer sealing can be realized and the inner sealing can also be realized by arranging the sealing piece.

Drawings

FIG. 1 is a schematic diagram of an electromagnetic water valve;

fig. 2 is a schematic structural diagram of an embodiment of the electromagnetic valve provided by the present invention;

FIG. 3 is an axial cross-sectional view of FIG. 2;

FIG. 4 is an exploded view of the assembly of FIG. 2;

FIG. 5 is an exploded view of the solenoid operated valve assembly of FIG. 3;

FIG. 6 is a schematic view of the first and second valve bodies of FIG. 2 after assembly;

FIG. 7 is an enlarged view of a portion of the portion A in FIG. 6;

FIG. 8 is a schematic view of the annular groove of FIG. 6 with a seal installed therein;

FIG. 9 is an enlarged partial view of portion B of FIG. 8;

FIG. 10 is a perspective view of the seal of FIG. 8;

FIG. 11 is an axial cross-sectional view of the seal of FIG. 10.

In fig. 1, the reference numerals are illustrated as follows:

a valve housing 01; an outlet pipe 02; an inlet pipe 03; a connection pipe 04; a lower valve plug 05;

in fig. 2-11, the reference numerals are illustrated as follows:

screws 1, 14; a magnetizer 2; a straight bushing 3; o-shaped rings 4 and 6; a coil block 5;

a core iron 71; a rod 72; a spring 73; a lower head 74; a platen 75; first and

second valve spools

76 and 77;

a membrane 8; pressing sleeve 9; a seal gasket 10;

a seal member 12; a first seal portion 121; a second seal portion 122; an arcuate inner wall 122 a; a tapered inner wall 122 b;

a first valve body 11; a third channel 11 a; a first passage 11 b; a valve chamber 110; a first annular projection 111; a first step portion 112;

a second valve body 13; an inner lumen 130; a second annular protrusion 131; a second stepped portion 132; second channel 13a

An annular groove 20; a first valve port a; and a second valve port b.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 2-5, fig. 2 is a schematic structural diagram of an embodiment of a solenoid valve provided in the present invention; FIG. 3 is an axial cross-sectional view of FIG. 2; FIG. 4 is an exploded view of the assembly of FIG. 2; FIG. 5 is an exploded view of the assembly of the solenoid operated valve assembly of FIG. 3.

The solenoid valve in this embodiment has a one-in-two-out structure, i.e., one inlet and two outlets. As shown in fig. 3, the first valve body 11 of the solenoid valve has a first passage 11b and a third passage 11a therein, and the second valve body 13 has a second passage 13a therein, and the first passage, the second passage, and the third passage are all communicated with the valve chamber. The first channel 11b may be an inlet channel, the second channel 13a may be a first outlet channel, and the third channel 11a may be a second outlet channel. The second valve body 13 and the first valve body 11 are separately arranged, the first valve body 11 is provided with a valve cavity 110, a valve port is also formed in the first valve body 11, and the electromagnetic valve is provided with two valve ports, namely a first valve port a and a second valve port b.

Specifically, the electromagnetic valve comprises screws 1 and 14, a magnetizer 2, a straight bushing 3, O-shaped rings 4 and 6, a coil assembly 5, a diaphragm 8, a pressing sleeve 9, a sealing gasket 10, a sealing element 12, a first valve body 11 and a second valve body 13. The solenoid valve further includes a core iron 71, a rod 72, a spring 73, a lower head 74, a pressure plate 75, and a first valve core 76 and a second valve core 77 fixed to the rod 72 and axially distributed upward and downward.

During assembly, the core iron 71 and the rod 72 are riveted and welded, the lower seal head 74 is connected with the pressure plate 75 in a press-fitting mode, then the rod 72 penetrates through the spring 73, the lower seal head 74 and the diaphragm 8, the two

valve cores

76 and 77 are mounted to the rod 72, then the rod 72 penetrates through the pressing sleeve 9 and the sealing gasket 10, and the first valve body 11 is mounted. In addition, the O-ring 6 is fitted to the lower end enclosure 74, the straight bushing 3 is riveted with the magnetizer 2, the O-ring 4 is fitted to the straight bushing 3, the magnetizer 2 is fitted to the coil block 5, the core iron 71 and the lower end enclosure 74, and the first valve body 11 is fixed by the screw 1. The seal 12 is then fitted into the first valve body 11 and the second valve body 13 is secured to the first valve body 11 by screws 14.

When the coil is electrified, the rod 72 drives the two

valve cores

76 and 77 to move downwards under the action of magnetic force, the second valve core 77 at the lower end gradually approaches and seals the second valve port b, and the cooling liquid flows from the first channel 11b to the second channel 11a through the first valve port a; when the coil is powered off, the rod 72 drives the two

valve cores

76 and 77 to reset upwards under the action of spring force, the two valve cores are far away from the second valve port b to open the second valve port b, the first valve core 76 at the upper end is gradually close to the first valve port a to seal and close the first valve port a, and the cooling liquid flows from the first channel 11b to the third channel 13a through the second valve port b.

As shown in fig. 3, in the present embodiment, the second valve body 13 is provided separately from the first valve body 11, and the second port b corresponds to a separate position, that is, the second port b is located at a position where the second valve body 13 and the first valve body 11 are substantially in abutment with each other.

It is worth noting that the solenoid valve in the present embodiment further includes an integral sealing member 12, the sealing member 12 includes a first sealing portion 121 and a second sealing portion 122, after the first valve body 11 and the second valve body 13 which are separately arranged are assembled, the first sealing portion 121 is pressed to realize external sealing, and the second valve core 77 blocks the second valve port b of the second sealing portion 122 to realize internal sealing.

Specifically, with continued reference to FIG. 3 and with reference to FIGS. 6-9, FIG. 6 is a schematic illustration of the assembled first valve body 11 and second valve body 13 of FIG. 2; FIG. 7 is an enlarged view of a portion of the portion A in FIG. 6; FIG. 8 is a schematic view of FIG. 6 with the seal 12 installed in the annular groove 20; fig. 9 is a partially enlarged view of a portion B in fig. 8.

As shown in fig. 6 and 7, the first valve body 11 and the second valve body 13 are provided with a step portion at the end portion where they are butted, the first valve body 11 includes a first step portion 112, the second valve body 13 includes a second step portion 132, the first step portion 112 and the second step portion 132 are correspondingly disposed, and an annular groove 20 is formed between the first step portion 112 and the second step portion 132. The annular recess 20 opens into the valve chamber 110 and into the inner chamber 130. Referring to fig. 10 and 11 again, fig. 10 is a schematic perspective view of the sealing member 12 in fig. 8; fig. 11 is an axial cross-sectional view of the seal 12 of fig. 10.

The sealing member 12 has a stepped cylindrical structure, the main body of the sealing member 12 is a second sealing portion 122, the second sealing portion 122 has a through hole axially penetrating through the second sealing portion 122, a part of the through hole forms the second valve port b, and the first sealing portion 121 is located outside the second sealing portion 122. The first sealing portion 121 may be generally rectangular in cross-section, and the annular groove 20 may also be generally rectangular in cross-section. The height of the first sealing portion 121 is smaller than that of the second sealing portion 122, and a portion of the outer wall of the second sealing portion 122 may be in interference fit with the corresponding inner wall of the valve chamber 110.

As described in the assembling process, the sealing member 12 may be installed in the first valve body 11, that is, the first sealing portion 121 of the sealing member 12 is first placed on the first step portion 112 of the first valve body 11, after the first valve body 11 and the second valve body 13 are fixed, the first sealing portion 121 is located in the annular groove 20, the first sealing portion 121 is in interference fit with at least a portion of the first step portion and the second step portion, the connecting portion of the first valve body 11 and the second valve body 13 is located between the first step portion 112 and the second step portion 132, and the first sealing portion 121 serves as an outer sealing to prevent the valve chamber from leaking outside. Of course, it is also possible to place the first sealing portion 121 of the sealing member 12 on the second stepped portion 132 of the second valve body 13 and fix the sealing member to the first valve body 11, and the above-mentioned assembling process is only an example.

When the first valve body 11 and the second valve body 13 are fixed, the second port b is formed at one end of the second sealing portion 122 of the sealing member 12, and in fig. 4, that is, the second port b is formed at the upper end of the through hole of the second sealing portion 122, and the valve body 77 can abut against and press against the upper end of the second sealing portion 122 to close the second port b.

It should be noted that the sealing member 12 is a unitary structure, and the first sealing portion 121 and the second sealing portion 122 are defined herein, mainly to facilitate understanding of the functional division of the sealing member 12. The sealing member 12 is provided in a stepped shape, that is, the first sealing portion 121 is formed by projecting outward from one end of the outer peripheral wall of the second sealing portion 122, but the sealing member 12 is not limited to the stepped shape, and for example, the first sealing portion 121 is formed by projecting outward from the middle of the outer peripheral wall of the second sealing portion 122 in a columnar shape. The first seal portion 121 may have another shape such as a tapered shape.

It can be seen that, in the present embodiment, for the positions where the first valve body and the second valve body are separately disposed, both external sealing and internal sealing can be achieved by one sealing member 12.

It should be clear that in this embodiment, the first valve body 11 and the second valve body 13 of the solenoid valve are separately arranged, and the sealing member 12 is arranged to realize the outer sealing at the joint of the first valve body 11 and the second valve body 13 and the inner sealing of the second valve port b, but actually, the sealing member 12 capable of realizing the inner and outer sealing simultaneously can be applied to the solenoid valves with other structural forms, and still taking fig. 3 as an example, when the part where the second passage 11a is located and the first valve body 11 are also separately arranged, such a sealing member 12 can also be arranged at the separate position to realize the outer sealing at the joint and the inner sealing of the first valve port a. That is, the sealing member 12 may be provided to integrate two functions as long as the valve port is provided near the position where the valve port is separately provided and there is an environment where the internal sealing is required. The housing of the entire solenoid valve may be defined as a valve body (the first valve body 11 and the second valve body 13 which are separately arranged are separate components of the valve body), the separately arranged valve body compresses the first sealing portion 121 to realize external sealing after being assembled, and a part of the through hole of the second sealing portion 122 forms a valve port to realize internal sealing in cooperation with the valve core.

With reference to fig. 7, the first valve body 11 includes a first annular protrusion 111 protruding from a step surface of the first step 112, the second valve body 13 includes a second annular protrusion 131 protruding from a step surface of the second step 132, and the first annular protrusion 111 and the second annular protrusion 131 may be disposed opposite to each other, so that the first sealing portion 121 is in a compressed state when located between the first step and the second step, and the first sealing portion 121 is in contact with and interference fit with the first annular protrusion and the second annular protrusion, so as to increase stress at the contact portion and improve the outer sealing effect. In addition, the first and second annular protrusions may reduce the risk of the first seal 121 falling out of the annular groove.

With continued reference to fig. 10 and 11, the sealing member 12 may be made of rubber. In addition, the cross section of the inner wall of the through hole at the position of the valve port b is arc-shaped, one part of the valve core 77 is provided with a conical surface, the conical surface corresponds to the valve port b, and the inner wall of the through hole and the conical surface of the valve core can form linear sealing, so that the internal sealing effect can be improved. Of course, the sealing member 12 is not limited to the through-hole having one end provided as the arc-shaped inner wall 122a, nor is the valve element 77 limited to the tapered configuration.

As shown in fig. 11, one end of the through hole of the sealing member 12 forms a second valve port b, and the other end opposite to the second valve port b forms a tapered inner wall 122b, which has an inner diameter gradually increasing toward a direction away from the valve port, so as to reduce fluid resistance.

The electromagnetic valve is not limited to the application environment, and can be any application occasion requiring the electromagnetic valve, including but not limited to an air conditioning regulation and control system, a battery cooling and other heat management systems, and the air conditioning regulation and control system, the battery cooling and other heat management systems can be arranged in the new energy automobile.

Claims

1. A solenoid valve comprising a valve body having a valve chamber and a valve port therein, a valve cartridge movable to close the valve port and close the valve port, or to move away from the valve port and open the valve port;

the electromagnetic valve is characterized by comprising a sealing piece, wherein the sealing piece comprises a first sealing part and a second sealing part, the valve body comprises a first valve body and a second valve body, the first valve body and the second valve body are arranged in a split mode, the first sealing part is located at the connecting position of the first valve body and the second valve body, and the first sealing part is in a compressed state;

the second sealing part is provided with a through hole penetrating through the second sealing part, a part of the through hole forms the valve port, and the valve core can contact the second sealing part and block the valve port.

2. The electromagnetic valve according to claim 1, wherein the first sealing portion is located outside the second sealing portion, the first valve body includes a first step portion, the second valve body includes a second step portion, the first step portion and the second step portion are arranged correspondingly, an annular groove is formed between the first step portion and the second step portion, and an opening of the annular groove faces the valve chamber; the first sealing portion extends into the annular groove, the first sealing portion is in interference fit with at least one part of the first step portion and the second step portion, and the joint of the first valve body and the second valve body is located between the first step portion and the second step portion.

3. The solenoid valve of claim 2,

the first valve body comprises a first annular protrusion part protruding out of the step surface of the first step part, and the first sealing part is in interference fit with the first annular protrusion part;

and/or the second valve body comprises a second annular bulge protruding out of the step surface of the second step part, and the first sealing part is in interference fit with the second annular bulge.

4. The solenoid valve of claim 1, wherein the height of said first sealing portion is less than the height of said second sealing portion, and a portion of the outer wall of said second sealing portion is in interference fit with the corresponding inner wall of said valve chamber.

5. The solenoid valve of claim 4 wherein said first sealing portion is generally rectangular in cross-section and said sealing member is rubber.

6. The electromagnetic valve according to claim 4, wherein a portion of the spool has a tapered surface, and a cross section of an inner wall of the through hole at the position of the valve port is arc-shaped, and the tapered surface corresponds to the valve port.

7. The solenoid valve according to claim 6, wherein an end of said through hole opposite to said valve port is formed with a tapered inner wall, and an inner diameter of said inner wall is gradually increased in a direction away from said valve port.

8. The solenoid valve according to any one of claims 1 to 7, wherein said solenoid valve further comprises a first passage in said first valve body and a second passage in said second valve body, said first and second passages communicating with said valve chamber, said valve port being located between said second passage and said valve chamber, said second seal forming said valve port.

9. The solenoid valve according to any of claims 1 to 7, wherein a first passage and a third passage are provided in a first valve body of the solenoid valve, a second passage is provided in a second valve body, and the first passage, the second passage and the third passage communicate with the valve chamber;

the solenoid valve is formed with two valve ports, one of the valve ports being located between the second passage and the valve chamber, the second seal portion of the seal member forming the valve port; the other valve port is positioned between the third channel and the valve cavity.