CN211574324U - The electromagnetic valve - Google Patents

Abstract

The utility model provides a solenoid valve. The solenoid valve includes a valve body and a valve core. The valve body is provided with a valve cavity and a valve port. The valve core can move to close to the valve port, or to move away from the valve port to open the valve port. The solenoid valve includes a sealing The sealing member includes a first sealing part and a second sealing part, the first sealing part is located outside the second sealing part, the valve body includes a first valve body and a second valve body, and the first valve body and the second valve body are divided into two parts. The first sealing part is located at the connection part of the first valve body and the second valve body, and the first sealing part is in a compressed state; the second sealing part has a through hole passing through the second sealing part, and a part of the through hole forms a valve port , the valve core can contact the two sealing parts and block the valve port. This solution is aimed at the position where the valve body of the solenoid valve is separately arranged, and both the outer sealing and the inner sealing can be realized by setting the sealing member.

Description

The electromagnetic valve

technical field

The utility model relates to the technical field of fluid control, in particular to an electromagnetic valve.

Background technique

Please refer to FIG. 1 , which is a schematic structural diagram of an electromagnetic water valve.

The electromagnetic water valve includes a valve housing 01, the valve housing 01 forms a valve cavity, a valve stem is arranged inside, and the end of the valve stem is provided with an upper valve plug and a lower valve plug 05 that are axially spaced at a certain distance, and the valve housing 01 also forms an inlet pipe 03 and outlet pipe 02. A connecting pipe 04 is installed on the lower end of the valve shell 01, and the connecting pipe 04 is used as an outlet pipe.

The specific working principle is that the valve stem 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 in the seal 07) is opened, and the cooling medium Through the first channel 03, the lower valve port enters the mouthpiece 04 and flows out. The valve stem moves down, 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.

In addition, as shown in FIG. 1 , the mouthpiece 04 is docked with the valve housing 01 , and a sealing ring is provided at the docking position for external sealing, which is shown as part A in FIG. 1 . It can be seen that the electromagnetic water valve needs to be provided with more seals.

Utility model content

In order to solve the above technical problems, the utility model provides a solenoid valve. The solenoid valve includes a valve body and a valve core. The valve body has a valve cavity and a valve port. The solenoid valve includes a sealing member, the sealing member includes a first sealing portion and a second sealing portion, the first sealing portion is located outside the second sealing portion, the valve body includes a first valve body and a second valve body, and the first valve body The first sealing part is located at the connection part of the first valve body and the second valve body, and the first sealing part is in a compressed state; the second sealing part has a through hole passing through the second sealing part, and the A part of the hole forms a valve port, and the valve core can contact the two sealing parts and block the valve port. This solution is aimed at the position where the valve body of the solenoid valve is arranged separately, and both the outer sealing and the inner sealing can be realized by arranging the sealing member.

Description of drawings

Fig. 1 is the structural representation of a kind of electromagnetic water valve;

2 is a schematic structural diagram of a specific embodiment of the solenoid valve provided by the present invention;

Fig. 3 is the axial sectional schematic diagram of Fig. 2;

Fig. 4 is the assembly explosion schematic diagram of Fig. 2;

Fig. 5 is the assembly explosion schematic diagram of the solenoid valve assembly in Fig. 3;

FIG. 6 is a schematic view of the assembled first valve body and the second valve body in FIG. 2;

Fig. 7 is the partial enlarged schematic diagram of A part in Fig. 6;

Fig. 8 is the schematic diagram when sealing member is installed in the annular groove in Fig. 6;

Fig. 9 is the partial enlarged schematic diagram of B part in Fig. 8;

Fig. 10 is the three-dimensional structure schematic diagram of the sealing member in Fig. 8;

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

In accompanying drawing 1, the reference numerals are explained as follows:

Valve shell 01; outlet pipe 02; inlet pipe 03; take over 04; lower valve plug 05;

In the accompanying drawings 2-11, the reference numerals are explained as follows:

Screws 1, 14; Magnetic conductor 2; Straight bushing 3; O-rings 4, 6; Coil assembly 5;

Core iron 71; rod 72; spring 73; lower head 74; pressure plate 75; first valve core 76, second valve core 77;

Diaphragm 8; Sleeve 9; Gasket 10;

sealing member 12; first sealing part 121; second sealing part 122; arcuate inner wall 122a; conical inner wall 122b;

the first valve body 11; the third passage 11a; the first passage 11b; the valve cavity 110; the first annular protrusion 111; the first step portion 112;

second valve body 13; inner cavity 130; second annular protrusion 131; second stepped portion 132; second passage 13a

The annular groove 20; the first valve port a; the second valve port b.

Detailed ways

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Please refer to FIGS. 2-5, FIG. 2 is a schematic structural diagram of an embodiment of a solenoid valve provided by the present utility model; FIG. 3 is an axial cross-sectional schematic diagram of FIG. 2; FIG. 4 is a schematic diagram of an assembly explosion in FIG. An exploded schematic diagram of the assembly of the solenoid valve assembly in FIG. 3 .

The solenoid valve in this embodiment has a structure of one inlet and two outlets, that is, one inlet and two outlets. As shown in FIG. 3 , the first valve body 11 of the solenoid valve has a first channel 11b and a third channel 11a, and the second valve body 13 has a second channel 13a. The first channel, the second channel and the third channel are all communicate with the valve cavity. 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 provided as separate bodies, the first valve body 11 has a valve cavity 110, and the valve port is also formed in the first valve body 11. The solenoid valve is provided with two valve ports, which are respectively The first valve port a and the second valve port b.

Specifically, the solenoid valve includes screws 1, 14, a magnetic conductor 2, a straight bushing 3, O-rings 4, 6, a coil assembly 5, a diaphragm 8, a pressing sleeve 9, a sealing gasket 10, a sealing member 12, a first The valve body 11 and the second valve body 13 are composed. The solenoid valve also 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 with the rod 72 and distributed up and down along the axial direction.

During assembly, the core iron 71 and the rod 72 are riveted and welded to connect, the lower head 74 is press-fitted and connected to the pressure plate 75, and then the rod 72 penetrates the spring 73, the lower head 74 and the diaphragm 8, and two valve cores 76 are installed. , 77 to the rod 72, and then insert the rod 72 into the pressure sleeve 9, the gasket 10, and install the first valve body 11. In addition, the O-ring 6 is put into the lower head 74, the straight bushing 3 is riveted into the magnetic conductor 2, the O-ring 4 is put into the straight bushing 3, and the magnetic conductor 2 is put into the coil assembly 5 and the core iron 71, The lower head 74 is fixed to the first valve body 11 with the screw 1 . Then, the sealing member 12 is installed into the first valve body 11, and the second valve body 13 is fixed to the first valve body 11 with screws 14.

When the coil is energized, the rod 72 drives the two valve cores 76 and 77 to move downward under the action of the magnetic force, and the second valve core 77 at the lower end gradually approaches and seals the second valve port b. A valve port a flows to the second channel 11a; when the coil is de-energized, the rod 72 drives the two valve cores 76 and 77 to reset upward under the action of the spring force, away from the second valve port b to open the second valve port b. The first valve core 76 gradually approaches the first valve port a to seal and close the first valve port a, and the coolant flows from the first passage 11b to the third passage 13a through the second valve port b.

As shown in FIG. 3 , in this embodiment, the second valve body 13 and the first valve body 11 are provided as separate bodies, and the second valve port b corresponds to the split position, that is, the second valve port b is approximately located in the second valve body 13 The position where it is docked with the first valve body 11 .

It is worth noting that in this embodiment, the solenoid valve further includes an integral sealing member 12 , the sealing member 12 includes a first sealing portion 121 and a second sealing portion 122 , and the first valve body 11 and the second valve body are provided separately. 13 After assembling, press the first sealing part 121 to achieve outer sealing, and the second valve core 77 blocks the second valve port b of the second sealing part 122 to achieve inner sealing.

Specifically, please continue to refer to FIG. 3 and understand in conjunction with FIGS. 6-9 . FIG. 6 is a schematic diagram of the assembled first valve body 11 and the second valve body 13 in FIG. 2 ; FIG. 7 is a partial enlarged schematic diagram of part A in FIG. 6 ; FIG. 8 is a schematic view of the annular groove 20 in FIG. 6 when the sealing member 12 is installed; FIG. 9 is a partially enlarged schematic view of the part B in FIG. 8 .

As shown in FIGS. 6 and 7 , the first valve body 11 and the second valve body 13 are provided with stepped portions on the butted ends. The first valve body 11 includes a first stepped portion 112 , and the second valve body 13 includes a first stepped portion 112 . There are two stepped portions 132 . The first stepped portion 112 and the second stepped portion 132 are disposed correspondingly, and an annular groove 20 is formed between the first stepped portion 112 and the second stepped portion 132 . The opening of the annular groove 20 faces the valve cavity 110 and the inner cavity 130 . 10, 11, FIG. 10 is a schematic three-dimensional structure diagram of the seal 12 in FIG. 8; FIG. 11 is an axial cross-sectional view of the seal 12 in FIG. 10.

The sealing member 12 has a stepped columnar structure. The main body of the sealing member 12 is the second sealing portion 122. The second sealing portion 122 has a through hole extending through the second sealing portion 122 in the axial direction, and a part of the through hole forms the above-mentioned second valve port. b, the first sealing part 121 is located outside the second sealing part 122 . The cross section of the first sealing portion 121 may be substantially rectangular, and the cross section of the annular groove 20 may also be substantially rectangular. The height of the first sealing part 121 is smaller than the height of the second sealing part 122 , and a part of the outer wall of the second sealing part 122 can be in interference fit with the corresponding inner wall of the valve cavity 110 .

As described in the above assembly process, the sealing member 12 can be installed into the first valve body 11, that is, the first sealing portion 121 of the sealing member 12 is placed on the first step portion 112 of the first valve body 11, and the first valve body 11 is then fixed. After the body 11 and the second valve body 13, the first sealing part 121 is located in the annular groove 20, and the first sealing part 121 is in interference fit with at least a part of the first and second stepped parts. The connecting portion of the two valve bodies 13 is located between the first step portion 112 and the second step portion 132 , and the first sealing portion 121 acts as an outer seal to prevent leakage of the valve cavity. 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 then fix it with the first valve body 11 . The above assembly process is just an example.

After the first valve body 11 and the second valve body 13 are fixed, one end of the second sealing portion 122 of the sealing member 12 forms the second valve port b. In FIG. 4 , that is, the upper end of the through hole of the second sealing portion 122 forms the second valve port b. For the second valve port b, the valve core 77 can abut against the upper end of the second sealing portion 122 and be pressed tightly to realize the blocking of the second valve port b.

It should be noted that the sealing member 12 is an integral structure, and the first sealing portion 121 and the second sealing portion 122 are defined here mainly to facilitate the 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 one end of the outer peripheral wall of the second sealing portion 122 protruding outward, but in fact the sealing member 12 is not limited to the stepped shape. The cylindrical second sealing portion 122 is formed to protrude outward from the middle portion of the outer peripheral wall. The first sealing portion 121 may also have other shapes such as a cone shape.

It can be seen that, in this embodiment, for the position where the first valve body and the second valve body are separately arranged, both outer sealing and inner sealing can be achieved by one sealing member 12. This solution can reduce the number of sealing structures, Reducing the amount of mold opening and manufacturing costs can reduce the failure rate and improve the quality level of products.

It should be clear that in this specific embodiment, the first valve body 11 and the second valve body 13 of the solenoid valve are provided as separate bodies, and the provided sealing member 12 can realize the external sealing of the butt joint of the first valve body 11 and the second valve body 13 and the inner sealing of the second valve port b, but in fact, the sealing member 12 that can achieve both inner and outer sealing can be applied to solenoid valves of other structural forms. Still taking FIG. 3 as an example, when the second passage 11a is When the part at the junction and the first valve body 11 are also arranged separately, the sealing member 12 can also be arranged in the separated position to realize the outer sealing of the connection and the inner sealing of the first valve port a. That is, as long as a valve port is correspondingly provided near the position where the separate body is arranged, and there is an environment where internal sealing is required at the same time, such a sealing member 12 can be provided to integrate the two functions. The shell of the entire solenoid valve can be defined as the valve body (the first valve body 11 and the second valve body 13 set in the above-mentioned separate parts are the separate components of the valve body), and the valve body set in separate parts is assembled and pressed against the first valve body. The sealing part 121 realizes the outer sealing, and a part of the through hole of the second sealing part 122 forms a valve port, which cooperates with the valve core to realize the inner sealing.

Please continue to refer to FIG. 7 , the first valve body 11 includes a first annular protrusion 111 protruding from the stepped surface of the first stepped portion 112 , and the second valve body 13 includes a second annular protrusion protruding from the stepped surface of the second stepped portion 132 . The protruding portion 131, the first annular protruding portion 111 and the second annular protruding portion 131 may be disposed opposite to each other. In this way, when the first sealing portion 121 is located between the first and second stepped portions and is in a compressed state, the first sealing portion 121 and the The first and second annular protrusions are in contact and have an interference fit, which can increase the stress at the contact and improve the external sealing effect. In addition, the first and second annular protrusions can reduce the risk of the first sealing portion 121 falling out of the annular groove.

Please continue to refer to FIGS. 10 and 11 , the above-mentioned 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, a part of the valve core 77 has a tapered surface, the tapered surface corresponds to the valve port b, and the inner wall of the through hole and the tapered surface of the valve core can be formed Line sealing can improve the effect of inner sealing. Of course, the sealing member 12 is not limited to the arc inner wall 122a at one end of the through hole, and the valve core 77 is not limited to a conical structure.

As shown in FIG. 11 , one end of the through hole of the sealing member 12 forms the second valve port b, and the opposite end thereof forms a conical inner wall 122b, and the inner diameter of the inner wall gradually increases in the direction away from the valve port, which is conducive to reducing fluid resistance.

The above solenoid valve is not limited to the application environment, and can be any application that requires a solenoid valve, including but not limited to, air conditioning control system, battery cooling and other thermal management systems, etc. The above air conditioning control system, battery cooling and other thermal management systems can be set in new energy vehicles.

Claims (9)

1. A solenoid valve, the solenoid valve comprises a valve body and a valve core, the valve body has a valve cavity and a valve port, the valve core can move to close and block the valve port, or move away to open all the valve ports. the valve port; It is characterized in that, the solenoid valve includes a sealing member, the sealing member includes a first sealing portion and a second sealing portion, the valve body includes a first valve body and a second valve body, and the first valve body and the first valve body include a first valve body and a second valve body. The two valve bodies are arranged separately, the first sealing portion is located at the connection portion of the first valve body and the second valve body, and the first sealing portion is in a compressed state; The second sealing part has a through hole passing through the second sealing part, a part of the through hole forms the valve port, and the valve core can contact the two sealing parts and block the valve port. 2 . The solenoid valve of claim 1 , wherein the first sealing portion is located outside the second sealing portion, the first valve body comprises a first stepped portion, and the second valve body It includes a second step part, the first step part and the second step part are arranged correspondingly, an annular groove is formed between the first step part and the second step part, and the opening of the annular groove faces the a valve cavity; the first sealing part extends into the annular groove, and the first sealing part is in interference fit with at least a part of the first and second step parts; the first valve body and the second The connection of the valve body is located between the first step portion and the second step portion. 3. The solenoid valve of claim 2, wherein The first valve body includes a first annular protrusion protruding from the stepped surface of the first stepped portion, and the first sealing portion is in an interference fit with the first annular protrusion; And/or, the second valve body includes a second annular protruding portion protruding from the stepped surface of the second stepped portion, and the first sealing portion is in interference fit with the second annular protruding portion. 4 . The solenoid valve according to claim 1 , wherein the height of the first sealing part is smaller than the height of the second sealing part, and a part of the outer wall of the second sealing part corresponds to the valve cavity. 5 . Inner wall interference fit. 5 . The solenoid valve of claim 4 , wherein the cross section of the first sealing portion is substantially rectangular, and the sealing member is made of rubber. 6 . 6 . The solenoid valve according to claim 4 , wherein a part of the valve core has a conical surface, the cross-section of the inner wall of the through hole at the valve port position is arc-shaped, and the conical surface is in the shape of an arc. The face corresponds to the valve port. 7 . The solenoid valve according to claim 6 , wherein the end of the through hole opposite to the valve port forms a conical inner wall, and the inner diameter of the inner wall gradually increases in the direction away from the valve port. 8 . . 8. The solenoid valve according to any one of claims 1-7, wherein the first valve body of the solenoid valve further has a first channel, the second valve body has a second channel, and the first valve body has a second channel. A channel and a second channel communicate with the valve cavity, the valve port is located between the second channel and the valve cavity, and the second sealing portion forms the valve port. 9 . The solenoid valve according to claim 1 , wherein the first valve body of the solenoid valve has a first channel and a third channel, and the second valve body has a second channel, 10 . the first passage, the second passage and the third passage communicate with the valve cavity; The solenoid valve is formed with two valve ports, one of the valve ports is located between the second passage and the valve cavity, and the second sealing portion of the sealing member forms the valve port; the other is the valve port A port is located between the third passage and the valve cavity.

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