CN217502675U

CN217502675U - Multi-way valve

Info

Publication number: CN217502675U
Application number: CN202220217412.0U
Authority: CN
Inventors: 钟奕峰
Original assignee: Jiaxing Keao Electromagnetic Technology Co ltd
Current assignee: Jiaxing Keao Electromagnetic Technology Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-09-27
Anticipated expiration: 2032-01-26

Abstract

A multi-way valve comprises a valve casing, a valve core and a fixing frame. The valve casing has valve chamber and N fluid interface with the valve chamber intercommunication, and N is greater than or equal to 3. The fixing frame is provided with a central hole extending along the axial direction, the fixing frame extends into the valve cavity, and the lower part of the valve core can rotatably extend into the central hole. The side wall of the fixing frame is provided with N through holes which are in one-to-one correspondence with the N fluid interfaces respectively, a flexible annular sealing element is fixed around the hole opening of each through hole, the annular sealing element is provided with a first annular sealing part in contact sealing fit with the side wall of the valve cavity and a second annular sealing part in contact sealing fit with the valve core, and the first annular sealing part surrounds one end, adjacent to the valve cavity, of the corresponding fluid interface. The utility model discloses a flexible sealing element between valve casing and the case is fixed firm, and simple structure, easily assembly.

Description

Multi-way valve

Technical Field

The utility model relates to a multichannel valve especially relates to the sealing technique of multichannel valve.

Background

The motor-driven multi-way valve is widely applied to an automobile cooling system and used for controlling the on-off of cooling liquid in the cooling system. The valve core is driven to rotate by the motor, so that the cooling liquid can be switched among different pipelines. Because the pipeline is connected with the heat dissipation structures of the storage battery and the engine, the requirement on the internal sealing performance of the valve is high.

In existing motor-driven multi-way valves (e.g., three-way or five-way ball valves, cylindrical valves, etc.), the following is typically used for sealing between the valve element and the fluid connection of the valve body:

1. the valve shell and the valve core are hard sealed by using a plastic sealing element, and the mode is difficult to assemble and has poor sealing performance;

2. adopt flexible sealing member such as rubber seal to carry out soft seal between valve casing and the case, part structure is more complicated, and production and processing technology requires highly, and rubber seal can't be fixed totally simultaneously, all takes place to drop easily in production and assembling process, and assembly process is more complicated, and assembly cost is high.

Disclosure of Invention

The utility model aims to solve the technical problem that a multi-way valve is provided, the flexible sealing member between the valve casing of this multi-way valve and the case is fixed firm, and simple structure, easily assembly.

The utility model provides a multi-way valve, which comprises a valve shell and a valve core; the valve shell is provided with a valve cavity and N fluid interfaces communicated with the valve cavity, wherein N is more than or equal to 3; the multi-way valve also comprises a fixed frame, the fixed frame is provided with a central hole extending along the axial direction, the fixed frame extends into the valve cavity, and the lower part of the valve core can rotatably extend into the central hole; the side wall of the fixing frame is provided with N through holes which are respectively in one-to-one correspondence with the N fluid interfaces, a flexible annular sealing element is fixed around the orifice of each through hole, the annular sealing element is provided with a first annular sealing part in contact sealing fit with the side wall of the valve cavity and a second annular sealing part in contact sealing fit with the valve core, and the first annular sealing part surrounds one end, adjacent to the valve cavity, of the corresponding fluid interface.

In the multi-channel valve, one end of each fluid connector, which is adjacent to the valve cavity, is provided with the retaining rib extending along the height direction, one end of the retaining rib is connected with the inner wall of the fluid connector, and the retaining rib is used for abutting against the annular sealing piece of the fixing frame when the fixing frame is assembled.

The utility model discloses at least, have following advantage:

1. compared with the prior art, the embodiment of the utility model adds the fixing frame between the valve casing and the valve core, and fixes the flexible annular sealing element on the fixing frame between the valve casing and the valve core, so that the flexible annular sealing element can be more firmly fixed, the flexible sealing element is prevented from displacing in the use process of the valve, and the valve is easier to assemble;

2. the embodiment of the utility model provides a one end at the neighbouring valve pocket of fluid interface has set up the fender muscle, can effectively prevent to take place annular sealing member turn-ups at the in-process of equipment mount, leaks inefficacy in avoiding.

Drawings

Fig. 1 shows a schematic longitudinal cross-sectional cut-away view of a multi-way valve according to an embodiment of the invention.

Fig. 2 shows a schematic cross-sectional view of a transverse cross-section of a multi-way valve according to an embodiment of the invention.

Fig. 3 is a schematic external view of a fixing frame according to an embodiment of the present invention.

Fig. 4 shows a schematic cross-sectional view of a fastening frame according to an embodiment of the present invention.

Fig. 5 shows an external view of a valve cartridge according to an embodiment of the present invention.

Fig. 6 shows an external view of a valve housing according to an embodiment of the invention.

Fig. 7 shows a schematic cross-sectional view of a valve housing according to an embodiment of the invention.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Please refer to fig. 1 to 7. According to the utility model discloses multichannel valve includes valve casing 1, case 2, mount 3, executor 4 and support 5.

The multi-way valve of this embodiment is a three-way valve, and the valve housing 1 has a valve cavity 10 and a first fluid port 11, a second fluid port 12 and a third fluid port 13 which are communicated with the valve cavity 10. In other embodiments, the multi-way valve may also be a four-way valve, a five-way valve, etc., and accordingly, the number of the fluid ports is four, five, etc., respectively.

The holder 3 has a central bore 33 extending in the axial direction, the holder 3 projecting into the valve chamber 10, and the lower part of the valve cartridge 2 projecting rotatably into the central bore 33. The upper part of the valve element 2 has a rod-shaped connection 22, and the lower surface of the valve element 2 is provided with a fluid channel 20 for the three fluid connections and a sealing surface 24. In the present embodiment, the center hole 33 is a through hole.

The side wall of the fixing frame 3 is provided with three through holes 30 which are respectively in one-to-one correspondence with the three fluid ports of the valve casing 1. In the example shown in the figures, the side wall of the holder 3 is provided with four through holes 30, in order to make the overall structure of the product more balanced, the number of through holes functioning as fluid passages being only three. For a multi-way valve with N fluid ports (N is more than or equal to 3), N through holes 30 which are respectively in one-to-one correspondence with the N fluid ports are arranged on the side wall of the fixed frame 3. The valve core 2 is provided with a fluid channel matched with the N fluid ports and a sealing surface.

A flexible annular seal 6 is secured around the orifice of each through bore 30, the annular seal 6 having a first annular sealing portion in contact sealing engagement with the side wall of the valve chamber 10 and a second annular sealing portion for contact sealing engagement with the valve spool 2, the first annular sealing portion surrounding one end of the corresponding fluid port adjacent the valve chamber. Optionally, the flexible annular sealing member 6 is made of rubber.

In the present embodiment, the annular seal 6 is fitted in the seal groove 31 located around the aperture of the through-hole 30.

In the present embodiment, the seal groove 31 is opened on the outer side surface of the fixing frame 3. The annular seal member 6 includes a main body portion 6a having an n-shaped cross section and an auxiliary portion 6b having an L-shaped cross section. One side edge 611 of the n-shaped main body portion 6a is embedded in the sealing member groove 31, the top edge 612 of the n-shaped main body portion 6a extends to the opening of the corresponding through hole 30, and the other side edge 613 of the n-shaped main body portion 6a extends into the corresponding through hole 30 and abuts against the wall of the corresponding through hole 30. The first side 621 of the L-shaped auxiliary portion 6b is integrally connected to the bottom end of the other side 613 of the n-shaped main body portion and extends toward the inside of the corresponding through hole 30, and the second side 622 of the L-shaped auxiliary portion 6b extends toward the side away from the valve body 2. Preferably, the corner portions of the L-shaped auxiliary portion 6b are rounded.

The top edge 612 of the n-shaped main body portion 6a forms the aforementioned first annular seal portion, and the first side 621 of the L-shaped auxiliary portion 6b forms the aforementioned second annular seal portion.

During assembly, the annular sealing element 6 is pressed on the fixed frame 3 in an interference manner, then the fixed frame 3 is arranged in the valve cavity 10, and then the valve core 2 is arranged in the central hole 33 of the fixed frame 3, so that the assembly is very convenient, the flexible annular sealing element 6 can be firmly fixed, and the flexible annular sealing element 6 is prevented from displacing in the use process of the valve.

The bracket 5 covers the opening of the valve housing 1 and is sealingly connected to the valve housing 1 (for example, ultrasonic welding, screwing, etc.). A support sealing ring 51 is arranged between the support 5 and the side wall of the valve cavity 10. The holder 5 is provided with an operation hole 52, and the connection portion 22 of the valve body 2 passes through the operation hole 52. Two coupling portion seal rings 53 and a gasket 55 between the two coupling portion seal rings 53 are provided between the side surface of the coupling portion 22 and the operation hole 52 so that the coupling portion 22 is sealingly engaged with the operation hole 52.

The actuator 4 is provided with a motor and a gear transmission mechanism, and the motor is connected with the driving shaft 41 of the actuator 4 through the gear transmission mechanism so as to drive the driving shaft 41 to rotate. The driving shaft 41 is connected to the connecting portion 22 passing through the operation hole 52, and thus can rotate the valve body 2 in synchronization.

In operation, the actuator 4 receives a signal command from the upper computer, and drives the valve element 2 to rotate to a specified position through the driving shaft 41. In the present embodiment, the valve cartridge 2 has two sealing positions, one of which is shown in fig. 2. When the valve core 2 is rotated to this sealing position, as shown in fig. 2, the sealing surface 24 of the valve core 2 abuts against the second annular sealing portion of the annular sealing member 6 adjacent to the first fluid port 11 on the fixed frame 3, so that the annular sealing member 6 is deformed to form a seal, and thus the first fluid port 11 is closed, so that the first fluid port 11 is sealed from the other two fluid ports, and only the second fluid port 12 is kept open to the third fluid port 13.

Furthermore, one end of each fluid port adjacent to the valve cavity 10 is provided with a rib 16 extending in the height direction, one end of the rib 16 is connected with the inner wall of the fluid port, and the rib 16 is used for abutting against the annular sealing element of the fixing frame 3 when the fixing frame 3 is assembled. Through setting up the fender muscle, make mount 3 can not take place the turn-ups's of sealing member the condition in the assembling process, can effectively prevent the leakage because of the poor leakage that leads to of equipment.

In this embodiment, the multi-way valve is a cylindrical valve. The fixing frame 3 and the valve cavity 10 are both cylindrical. The side 161 of the rib 16 facing the valve chamber 10 is in the same cylindrical plane as the side wall of the valve chamber 10.

The embodiment of the utility model provides a fix flexible annular sealing member on the mount between valve casing and case, make flexible sealing member's fixed more firm, and then improved the sealing performance of valve. The annular sealing element is tested to be in compression sealing with the valve core and the valve shell, and the leakage amount is small under high pressure, for example, the leakage amount is 0 pa/s under the condition that the pressure is 160 Kpa.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A multi-way valve comprises a valve shell and a valve core; the valve shell is provided with a valve cavity and N fluid interfaces communicated with the valve cavity, wherein N is more than or equal to 3; the multi-way valve is characterized by further comprising a fixed frame, wherein the fixed frame is provided with a central hole extending along the axial direction, the fixed frame extends into the valve cavity, and the lower part of the valve core can rotatably extend into the central hole;

the side wall of the fixing frame is provided with N through holes which are in one-to-one correspondence with the N fluid interfaces respectively, a flexible annular sealing element is fixed around the hole opening of each through hole, the annular sealing element is provided with a first annular sealing part in contact sealing fit with the side wall of the valve cavity and a second annular sealing part in contact sealing fit with the valve core, and the first annular sealing part surrounds one end, adjacent to the valve cavity, of the corresponding fluid interface.

2. The multi-way valve of claim 1, wherein the annular seal is nested within a seal groove located around the aperture of the through bore.

3. The multi-way valve of claim 2, wherein the seal groove opens on an outer side of the mounting bracket;

the annular sealing element comprises a main body part with an n-shaped section and an auxiliary part with an L-shaped section; one side edge of the n-shaped main body part is embedded into the sealing element groove, the top edge of the n-shaped main body part extends to the orifice of the corresponding through hole, and the other side edge of the n-shaped main body part extends into the corresponding through hole and is attached to the hole wall of the corresponding through hole; the first side of the L-shaped auxiliary part is integrally connected with the bottom end of the other side of the n-shaped main body part and extends towards the inside of the through hole, and the second side of the L-shaped auxiliary part extends towards one side far away from the valve core;

the top edge of the n-shaped main body portion forms the first annular seal portion and the first side edge of the L-shaped auxiliary portion forms the second annular seal portion.

4. A multi-way valve according to claim 3, wherein the corner portions of the L-shaped auxiliary portion are radiused.

5. The multi-way valve of claim 1, wherein one end of each fluid port adjacent to the valve cavity is provided with a rib extending in a height direction, one end of the rib is connected with the inner wall of the fluid port, and the rib is used for abutting against an annular sealing element of the fixing frame when the fixing frame is assembled.

6. The multi-way valve of claim 5, wherein the holder and the valve cavity are cylindrical;

one side of the blocking rib facing the valve cavity and the side wall of the valve cavity are positioned on the same cylindrical surface.

7. The multi-way valve of claim 1, wherein the central aperture of the fixture is a through-hole.

8. The multi-way valve of claim 1, wherein the flexible annular seal is rubber.

9. The multi-way valve of claim 1, wherein the multi-way valve is a three-way valve, a four-way valve, or a five-way valve.

10. The multi-way valve of claim 1, wherein the multi-way valve is a cylindrical valve.