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CN-121993535-A - Rigidity valve

CN121993535ACN 121993535 ACN121993535 ACN 121993535ACN-121993535-A

Abstract

The application discloses a rigidity valve, which comprises a valve seat, a valve block part and a guide sleeve, wherein the guide sleeve is in limiting connection with the valve seat in the axial direction, the valve block part is inserted into the guide sleeve and can move relative to the guide sleeve in the axial direction to close or open a valve port part of the valve seat, the valve block part comprises a valve block and two sealing rings, the two sealing rings are arranged in the axial direction, the sealing rings are positioned between the valve block and the guide sleeve and are fixedly connected with the valve block, the sealing rings are provided with sealing lips which are annular structures extending outwards from the outer peripheral surface of the sealing rings, the inner hole part of the guide sleeve comprises a first inner hole section and a second inner hole section, and when the valve block part closes the valve port part, the first inner hole section and the second inner hole section are respectively matched with the two sealing lips in a sealing way. The sealing related component of the stiffness valve has the advantages of simple structure and low requirement on dimensional accuracy, and can reduce the processing difficulty and facilitate assembly.

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. The rigidity valve is characterized by comprising a valve seat, a valve block part and a guide sleeve, wherein the guide sleeve is in limiting connection with the valve seat in the axial direction, the valve block part is inserted into the guide sleeve, and the valve block part can move relative to the guide sleeve in the axial direction so as to close or open a valve opening of the valve seat; The valve block component comprises a valve block and two sealing rings, wherein the two sealing rings are axially arranged, the sealing rings are positioned between the valve block and the guide sleeve and are fixedly connected with the valve block, and the sealing rings are provided with sealing lips which are annular structures extending outwards from the outer peripheral surface of the sealing rings; The inner hole part of the guide sleeve comprises a first inner hole section and a second inner hole section, and when the valve block part closes the valve opening part, the first inner hole section and the second inner hole section are respectively in sealing fit with the two sealing lips.
  2. 2. The stiffness valve of claim 1 wherein the sealing lips are further inclined to one axial side to provide the sealing lips with the ability to deform to the other axial side; the apertures of the first and second bore sections are each smaller than a maximum outer diameter corresponding to the sealing lip.
  3. 3. The stiffness valve according to claim 2, wherein the two seal rings are a first seal ring and a second seal ring, respectively, the first seal ring is away from the valve opening portion with respect to the second seal ring, the seal lip of the first seal ring is inclined axially upward, and the seal lip of the second seal ring is inclined axially downward.
  4. 4. The stiffness valve of claim 1 wherein the first and second bore sections are of identical pore size and the two seal rings are of identical construction.
  5. 5. The stiffness valve according to any one of claims 1 to 4 wherein the sealing lip comprises a root portion connected to the outer peripheral surface of the sealing ring and a head portion remote from the outer peripheral surface of the sealing ring, the thickness of the sealing lip tending to decrease in a direction from the root portion to the head portion.
  6. 6. The stiffness valve of any of claims 1 to 4 wherein the inner bore portion of the guide sleeve further includes a third inner bore section and a fourth inner bore section, the first inner bore section being remote from the valve mouth relative to the second inner bore section, the third inner bore section being located on a side of the first inner bore section remote from the valve mouth, the fourth inner bore section being located between the first inner bore section and the second inner bore section, and wherein the apertures of the third inner bore section and the fourth inner bore section are each no smaller than a maximum outer diameter corresponding to the sealing lip.
  7. 7. The stiffness valve of claim 6 wherein the third bore section and the first bore section are connected by a first transition bore section having a bore diameter that decreases progressively from the third bore section to the first bore section; and/or the number of the groups of groups, The fourth inner hole section is connected with the second inner hole section through a second transition hole section, and the hole diameter of the second transition hole section gradually decreases from the fourth inner hole section to the second inner hole section.
  8. 8. The stiffness valve according to any one of claims 1 to 4 further comprising a head member and a gasket, wherein the valve cavity of the valve seat has a first stepped surface facing upward, the guide sleeve presses the gasket against the first stepped surface, and the lower end surface of the head member presses against the upper end surface of the guide sleeve.
  9. 9. The stiffness valve according to claim 8 wherein the guide sleeve includes a large diameter sleeve portion and a small diameter sleeve portion, the small diameter sleeve portion being connected to a lower end of the large diameter sleeve portion, the gasket being wrapped around the small diameter sleeve portion, the gasket being located between the large diameter sleeve portion and the first step surface.
  10. 10. The stiffness valve according to claim 8, wherein the head member includes a connecting portion and a head portion, the head portion includes a main body portion and an extending portion extending downward from a lower end of the main body portion, a downward stepped surface is formed at a junction of the extending portion and the main body portion, the extending portion is fixedly inserted into an inner hole portion of the connecting portion, the stepped surface abuts against an upper end surface of the connecting portion, and a lower end surface of the connecting portion abuts against an upper end surface of the guide sleeve.
  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 downwards, an axial gap is formed between the second step surface and an upper end surface of the guide sleeve, and an axial gap is also formed between a lower end surface of the extending portion and an upper end surface of the guide sleeve.

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 sealing structure is arranged between the sealing head and the valve seat, the outer peripheral surface of the sealing block is matched with the inner peripheral surface of the sealing structure, sealing is not needed between the sealing block and the sealing structure in the valve opening state of the sealing block far away from the valve opening, and the sealing block is sealed between the sealing block and the sealing structure in the valve closing state of the sealing block abutting the valve opening. The sealing structure is used for sealing the sealing head and the valve seat, and is matched with the outer circumferential surface of the sealing block in a way of unsealing and sealing the valve, so that the sealing structure is complex in structure and high in dimensional accuracy requirement, and the processing difficulty is high and the processing cost is high. Disclosure of Invention The application aims to provide the rigidity valve, and the structure of the sealing related component of the rigidity valve is simple, the requirement on the dimensional accuracy is low, the processing difficulty can be reduced, and the rigidity valve is convenient to assemble. In order to solve the technical problems, the application provides a rigidity valve, which comprises a valve seat, a valve block part and a guide sleeve, wherein the guide sleeve is in axial limit connection with the valve seat, the valve block part is inserted into the guide sleeve, and the valve block part can move along the axial direction relative to the guide sleeve to close or open a valve opening of the valve seat; The valve block component comprises a valve block and two sealing rings, wherein the two sealing rings are axially arranged, the sealing rings are positioned between the valve block and the guide sleeve and are fixedly connected with the valve block, and the sealing rings are provided with sealing lips which are annular structures extending outwards from the outer peripheral surface of the sealing rings; The inner hole part of the guide sleeve comprises a first inner hole section and a second inner hole section, and when the valve block part closes the valve opening part, the first inner hole section and the second inner hole section are respectively in sealing fit with the two sealing lips. By adopting the structure, sliding sealing can be realized between the valve block part and the guide sleeve, the two sealing rings are two independent parts, the two sealing rings are arranged on the valve block of the valve block part, one sealing lip matched with the hole section of the guide sleeve is arranged on each sealing ring, the two sealing lips are not arranged on one part, the processing precision requirement on the sealing rings is reduced, meanwhile, the two sealing lips are respectively matched with the sealing of the first inner hole section and the second inner hole section of the guide sleeve, the sealing matching can be realized through the mounting position of the sealing rings on the valve block, the axial