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CN-121993531-A - Rigidity valve

CN121993531ACN 121993531 ACN121993531 ACN 121993531ACN-121993531-A

Abstract

The application provides a rigidity valve, which is simple in structure and comprises a coil component, a mandrel, a sealing component, a valve seat, core iron and a sealing head component which are matched with each other, wherein two ends of the mandrel are respectively connected with the core iron and the sealing component, the valve seat is provided with a valve port, the sealing component is used for opening and closing the valve port, the sealing component is arranged between the sealing component and the valve seat and comprises a guide sleeve, a first sealing ring and a second sealing ring, a groove is formed in the inner side wall of the guide sleeve, part of the first sealing ring is accommodated in the groove, the sealing component penetrates through the guide sleeve, the inner side of the first sealing ring is abutted against the outer side wall of the sealing component, the outer side wall of the guide sleeve is provided with an annular bulge, the second sealing ring is axially pressed between the sealing head component and one side surface of the annular bulge in the axial direction, the hole wall of an inner hole of the valve seat is provided with a first step surface, and the other side surface of the annular bulge in the axial direction is abutted against the first step surface. The sealing assembly of the stiffness valve is more reliable in sealing.

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 (9)

  1. 1. The rigidity valve is characterized by comprising a mandrel, a sealing part, a valve seat and a core iron and end socket part which are matched with each other, wherein two ends of the mandrel are respectively connected with the core iron and the sealing part, the valve seat is provided with a valve port, and the sealing part is used for opening and closing the valve port; The sealing component comprises a guide sleeve, a first sealing ring and a second sealing ring, wherein a groove is formed in the inner side wall of the guide sleeve, a part of the first sealing ring is contained in the groove, the sealing component penetrates through the guide sleeve, the inner side of the first sealing ring is abutted to the outer side wall of the sealing component, an annular bulge is formed in the outer side wall of the guide sleeve, the second sealing ring is axially pressed between the end socket component and one side surface of the annular bulge in the axial direction, a first step surface is formed in the hole wall of an inner hole of the valve seat, and the other side surface of the annular bulge in the axial direction is abutted to the first step surface.
  2. 2. The stiffness valve according to claim 1, wherein the first seal ring is provided with a seal lip, the seal lip being an annular structure protruding outwardly from an outer peripheral surface of the first seal ring, the seal lip abutting an outer side wall of the seal member and a bottom wall of the groove.
  3. 3. The rigidity valve according to claim 1, wherein the head part comprises a head part and a fixing seat, the head part comprises a through hole penetrating along the axial direction, the mandrel penetrates through the through hole, the head part and the fixing seat are fixedly connected or in limiting connection along the axial direction, at least part of the core iron and at least part of the head part are axially distributed in an inner hole of the coil part, the fixing seat is axially located between the coil part and the valve seat, and the second sealing ring is axially pressed between the fixing seat and one side surface of the annular protrusion along the axial direction.
  4. 4. A stiffness valve according to claim 3 wherein the outer side wall of the annular projection is in contact with the bore wall of the inner bore of the valve seat.
  5. 5. The rigidity valve according to claim 3, wherein a second step surface facing the head member is provided on an outer side of the valve seat, and the third seal ring is pressed between the second step surface and the fixing seat in an axial direction.
  6. 6. The stiffness valve of claim 5 further including a magnetically permeable housing, one end of the magnetically permeable housing adjacent the valve seat being connected to the valve seat, an outer side of the third seal ring abutting an inner side wall of the magnetically permeable housing.
  7. 7. The stiffness valve of claim 6 wherein a third stepped surface is provided on the outside of the valve seat, the third stepped surface and the second stepped surface being oppositely disposed, and the magnetically permeable housing being swaged to the third stepped surface at an end thereof adjacent the valve seat.
  8. 8. A rigidity valve according to claim 3, wherein the head portion comprises a head body portion and an extension portion, the head body portion is located in the inner hole of the coil component, the extension portion extends axially from one end of the head body portion, which is close to the valve seat, the fixing seat is provided with a fixing seat inner hole penetrating axially, the extension portion is inserted into the fixing seat inner hole, the extension portion is in interference fit with the hole wall of the fixing seat inner hole, and/or the head portion and the fixing seat are welded and fixed.
  9. 9. The stiffness valve of claim 8 wherein the bore wall of the seat bore is provided with a stepped surface, the stepped surface of the bore wall of the seat bore facing the seal assembly.

Description

Rigidity valve Technical Field The invention relates to the technical field of valves, in particular to a rigidity valve. Background As shown in fig. 9, fig. 9 is a schematic structural view of a stiffness valve. The stiffness valve comprises core iron 01, a sealing head 02, a sealing block 03, a spring 04, a mandrel 05, a sealing assembly 06, a valve seat 07 and a coil component 08. The coil component 08 is powered off, under the action of the spring 04, the core iron 01 drives the mandrel 05 to move upwards, then drives the sealing block 03 to be far away from the valve port, and opens the valve port, the coil component 08 is powered on, the core iron 01 and the seal head 02 absorb each other, the core iron 01 moves downwards, and the mandrel 05 drives the sealing block 03 to be close to the valve port and seal the valve port, and then closes the rigidity valve. The rigidity valve further comprises a sealing component 06, the sealing component 06 comprises a supporting piece 062 and a rubber piece 061, the supporting piece 062 is supported between the valve seat 07 and the sealing head 02, the rubber piece 061 is sleeved on the supporting piece 062 and in interference fit with the inner side of the sealing head 02, sealing lips distributed up and down are arranged on the inner side of the rubber piece 061, and the sealing lips are in sealing fit with the sealing block 03 under the action of extrusion deformation and external pressure. The seal assembly 06 of the rigidity valve has a complex structure, and when the external pressure is small, the sealing performance of the rubber member 061 is lowered. Disclosure of Invention The application aims to provide a rigidity valve, which has a simple structure and is more reliable in sealing. The application provides a rigidity valve, which comprises a coil component, a mandrel, a sealing component, a valve seat and a core iron and end socket component which are matched with each other, wherein two ends of the mandrel are respectively connected with the core iron and the sealing component, the valve seat is provided with a valve port, and the sealing component is used for opening and closing the valve port; The sealing component comprises a guide sleeve, a first sealing ring and a second sealing ring, wherein a groove is formed in the inner side wall of the guide sleeve, a part of the first sealing ring is contained in the groove, the sealing component penetrates through the guide sleeve, the inner side of the first sealing ring is abutted to the outer side wall of the sealing component, an annular bulge is formed in the outer side wall of the guide sleeve, the second sealing ring is axially pressed between the end socket component and one side surface of the annular bulge in the axial direction, a first step surface is formed in the hole wall of an inner hole of the valve seat, and the other side surface of the annular bulge in the axial direction is abutted to the first step surface. The sealing component of the rigidity valve comprises the guide sleeve, the first sealing ring and the second sealing ring, and is simple in structure, simple to assemble and low in processing cost. The first sealing ring and the outer side wall of the sealing component are always in a sealing state, the tightness of the first sealing ring is irrelevant to the external pressure, and the sealing is reliable. In addition, in the background art, a cavity is formed between the two sealing lips and the sealing block of the rubber part, pressure exists in the cavity, when the pressure is higher than the pressure on one side of any sealing lip, gas in the cavity can leak out to cause internal leakage, and in the application, the first sealing ring is abutted with the sealing part to realize sealing, so that the cavity is not formed, and internal leakage can be avoided or reduced. Drawings FIG. 1 is a schematic diagram of a stiffness valve according to an embodiment of the present application; FIG. 2 is an enlarged view of the portion A of FIG. 1; FIG. 3 is a schematic view of the assembly of the head and the holder of FIG. 1; FIG. 4 is a schematic view of the head portion of FIG. 3; FIG. 5 is a schematic view of the fixing base in FIG. 3; FIG. 6 is an enlarged view of portion C of FIG. 2; FIG. 7 is an enlarged view of the portion B of FIG. 2; FIG. 8 is a schematic view of a hollow spring according to an embodiment of the present application; Fig. 9 is a schematic structural view of a stiffness valve. The reference numerals of the above figures are explained as follows: A 100-stiffness valve; 1. the end cover part, the 11-wire holder and the 12-end cover body; 2. 21-seventh step surface; 3-coil parts, 31-coil windings, 32-coil frameworks, 321-first annular flanging and 322-eighth step surfaces; 4-end socket parts, 41 a-through holes, 41a 1-first hole sections, 41a 2-second hole sections, 41a 3-third hole sections, 411-tenth step surfaces, 412-eleventh step surfaces, 413-ninth step surfaces