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CN-121993532-A - Rigidity valve

CN121993532ACN 121993532 ACN121993532 ACN 121993532ACN-121993532-A

Abstract

The application discloses a rigidity valve, which comprises a sealing head part, a valve seat, a valve block and a sealing assembly, wherein the valve block is inserted into the sealing assembly and can move axially relative to the sealing assembly to close or open a valve port part of the valve seat, the valve block is in sliding sealing fit with the sealing assembly, a valve cavity of the valve seat is provided with an upward first step surface, the first step surface supports the sealing assembly, the sealing head part is pressed against the upper end surface of the sealing assembly, the periphery of the sealing assembly is provided with an outward protruding sealing bulge, the sealing bulge has elastic deformation capability, and the sealing bulge is abutted against a cavity peripheral wall surface of the valve cavity above the first step surface. The rigidity valve can reduce the processing difficulty through the structural optimization of the sealing part.

Inventors

  • Request for anonymity

Assignees

  • 浙江三花智能控制股份有限公司

Dates

Publication Date
20260508
Application Date
20241106

Claims (11)

  1. 1. A rigidity valve is characterized by comprising a sealing head component, a valve seat, a valve block and a sealing component; the valve block is inserted into the sealing assembly and can move axially relative to the sealing assembly to close or open the valve port part of the valve seat; The valve cavity of the valve seat is provided with an upward first step surface, the first step surface supports the sealing assembly, and the end socket component is pressed against the upper end surface of the sealing assembly; the periphery of the sealing assembly is provided with a sealing bulge protruding outwards, the sealing bulge has elastic deformation capacity, and the sealing bulge is abutted with the cavity peripheral wall surface of the valve cavity above the first step surface.
  2. 2. The rigidity valve according to claim 1, wherein the valve block comprises a block main body part, the block main body part is of an equal diameter structure, the sealing assembly is provided with an inserting hole part in guiding fit with the block main body part, the sealing assembly is provided with two sealing lips in annular structures, the two sealing lips are axially arranged, the sealing lips have elastic deformation capacity, and the sealing lips are in abutting fit with the block main body part.
  3. 3. The stiffness valve of claim 2 wherein the seal assembly includes a support and a seal, the seal being integral with the support, the support having a hardness greater than the hardness of the seal, the seal lip and the seal boss being formed in the seal, the socket portion being formed in the support.
  4. 4. A stiffness valve according to claim 3 wherein the support member includes a barrel portion fixedly secured to the seal member, the socket portion being formed in the barrel portion, the two sealing lips being located at the upper and lower ends of the barrel portion respectively.
  5. 5. The rigidity valve according to claim 4, wherein the seal member comprises a seal sleeve portion and a seal ring portion, the seal ring portion is formed by extending radially outward from an outer peripheral wall of the seal sleeve portion, two seal lips are provided at an upper end portion and a lower end portion of a wall surface of an inner hole of the seal sleeve portion, respectively, an outer part Zhou Butu of the seal ring portion is formed on an outer peripheral surface of the support member to form the seal projection, and the tube portion is fixedly fitted in the inner hole of the seal sleeve portion.
  6. 6. The stiffness valve according to claim 5, wherein the sealing ring portion is located at a central region of the sealing sleeve portion in an axial direction, and the support further includes a first support portion and a second support portion located at upper and lower ends of the sealing ring portion, respectively.
  7. 7. The stiffness valve according to any of the claims 2 to 6, wherein the sealing lips are also inclined to one side in the axial direction, the inclination directions of the two sealing lips in the axial direction being opposite.
  8. 8. The stiffness valve of claim 7 wherein the two sealing lips are a first sealing lip and a second sealing lip, respectively, the first sealing lip being located above the second sealing lip, the first sealing lip being inclined axially upward and the second sealing lip being inclined axially downward.
  9. 9. The stiffness valve according to any of claims 1 to 6 wherein the peripheral wall of the sealing protrusion is a convex arcuate surface.
  10. 10. The stiffness valve according to any one of claims 1 to 6 wherein the head member includes a connecting portion and a head portion, the head portion includes a main body portion and an extension portion extending downward from a lower end of the main body portion, a downward stepped surface is formed at a junction of the extension portion and the main body portion, the extension portion is fixedly inserted into an inner hole portion of the connecting portion, the stepped surface abuts an upper end surface of the connecting portion, and a lower end surface of the connecting portion abuts an upper end surface of the sealing assembly.
  11. 11. The rigidity valve according to claim 10, wherein the connecting portion and the head portion are welded and fixed, a hole wall of the inner hole portion of the connecting portion has a second step surface facing downward, an axial gap is provided between the second step surface and an upper end surface of the seal assembly, and an axial gap is also provided between a lower end surface of the extending portion and an upper end surface of the seal assembly.

Description

Rigidity valve Technical Field The application relates to the technical field of valve devices, in particular to a rigidity valve. Background The suspension system of an automobile is closely related to safety, comfort, handling, and the like of the vehicle. To meet the requirements of high vehicle comfort and handling, air suspension systems are one of the directions of development of suspension systems. Air springs are key components in automotive air suspension systems that directly affect vehicle performance. The dual-cavity, three-cavity and other multi-cavity air springs have the advantages of being more applicable than single-cavity air springs because the rigidity is adjustable and the rigidity adjusting range is wide. The stiffness adjustment of the dual-cavity, three-cavity and other multi-cavity air springs depends on the stiffness valve. Taking a double-cavity air spring as an example, the communication relation between the main cavity and the auxiliary cavity can be controlled by opening and closing the rigidity valve, so that the rigidity of the double-cavity air spring is adjusted. The stiffness valve is closed, the main cavity and the auxiliary cavity of the double-cavity air spring are not communicated, the volume of the compressible gas is reduced, and the stiffness of the double-cavity air spring is increased. In the related art, the stiffness valve comprises an end socket, a valve seat, core iron, a mandrel and a sealing block, wherein the mandrel penetrates through the end socket and can axially move relative to the end socket, the upper end of the mandrel is relatively fixed with the core iron, and the lower end of the mandrel is relatively fixed with the sealing block. Through the excitation of the coil, the core iron can drive the sealing block to be abutted against or away from the valve opening of the valve seat through the mandrel, so that valve opening or closing actions are realized. The rigidity valve is equipped with sealing member between head and disk seat, and this sealing member is equipped with the seal structure with the head is sealed, with the sealed seal structure of disk seat, should sealing member still need realize sealedly between the sealing block under the valve closing state, and the seal structure quantity on this sealing member is more, and cooperates with different structure, and the dimensional accuracy requirement to sealing member processing is higher, leads to the processing degree of difficulty big. Disclosure of Invention The application aims to provide a rigidity valve which can reduce processing difficulty by optimizing the structure of a sealing component. In order to solve the technical problems, the application provides a rigidity valve which comprises a sealing head component, a valve seat, a valve block and a sealing component; the valve block is inserted into the sealing assembly and can move axially relative to the sealing assembly to close or open the valve port part of the valve seat; The valve cavity of the valve seat is provided with an upward first step surface, the first step surface supports the sealing assembly, and the end socket component is pressed against the upper end surface of the sealing assembly; The periphery of the sealing assembly is provided with a sealing bulge protruding outwards, the sealing bulge has elastic deformation capacity, and the sealing bulge is in abutting fit with a cavity peripheral wall surface of the valve cavity above the first step surface. By adopting the scheme, the sealing component is pressed against the first step surface of the valve seat by the sealing component, and the sealing between the sealing component and the valve seat is realized by utilizing the interference extrusion of the sealing bulge of the sealing component and the peripheral wall surface of the valve cavity of the valve seat. The sealing assembly can realize sealing between the end socket component and the valve seat only by arranging one sealing structure, namely, the sealing bulge is not required to be arranged on the sealing assembly to be respectively sealed with the end socket component and the valve seat, the number of the sealing structures arranged on the sealing assembly can be reduced, the control requirement on the dimensional accuracy of the sealing assembly is reduced, and the processing difficulty of the sealing assembly and related components matched with the sealing assembly is reduced. In one possible implementation scheme, the valve block comprises a block main body part which is of an equal-diameter structure, the sealing assembly is provided with an inserting hole part which is in guide fit with the block main body part, the sealing assembly is provided with two sealing lips which are of annular structures, the two sealing lips are axially distributed, the sealing lips have elastic deformation capacity, and the sealing lips are in abutting fit with the block main body part. In one possible implementation, the