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CN-121977091-A - Linear sealing valve group

CN121977091ACN 121977091 ACN121977091 ACN 121977091ACN-121977091-A

Abstract

The application discloses a line-sealed valve bank, which comprises a valve main body and at least one group of valve cores, wherein the valve main body is provided with at least one group of valve cavities, at least one working channel, an oil inlet channel and an oil outlet channel, each working channel is provided with two interfaces, the oil inlet channel is provided with at least one oil inlet, the oil outlet channel is provided with at least one oil outlet, the valve main body forms an abutting structure in each valve cavity, the abutting structure is provided with an abutting wall, the valve cores are provided with abutting walls, the cross sections are made along the moving direction of the valve cores, the abutting walls and the cross section lines on the same side of the abutting walls extend and cross, the cross section dimension of the part of the valve core forming the abutting wall and the cross section dimension of the part of the abutting structure forming the abutting wall are gradually changed along the moving direction of the valve core, and the valve core abuts against the abutting wall in a line contact mode of the abutting wall, so that compared with a slide valve structure, the surface contact sealing mode adopted by the structure is better in sealing performance and faster response.

Inventors

  • PENG MIN
  • SHANG BING
  • CHEN JIAHAO

Assignees

  • 涌镇液压机械（上海）有限公司

Dates

Publication Date
20260505
Application Date
20260126

Claims (10)

  1. 1. Wire-sealed valve block, its characterized in that, wire-sealed valve block includes: The valve comprises a valve body, a plurality of oil inlets and oil outlets, wherein the valve body is provided with at least one group of valve cavities, at least one working channel, an oil inlet channel and an oil outlet channel, each working channel is provided with two interfaces, the oil inlet channel is provided with at least one oil inlet, the oil outlet channel is provided with at least one oil outlet, one group of valve cavities is provided with two valve cavities, each valve cavity is communicated with one interface, each oil inlet of the oil inlet channel is communicated with one valve cavity in one group, each oil outlet of the oil outlet channel is communicated with the other valve cavity in one group, an abutting structure is formed in each valve cavity, the interfaces communicated with the valve cavities and the oil inlets or the oil outlets are respectively arranged on two sides of the corresponding abutting structure, and the abutting structure is provided with an abutting wall; the valve core is provided with two valve cores, each valve core is movably arranged in one valve cavity to be in butt joint or separation with the corresponding butt joint structure, the valve core is provided with a butt joint wall, a section is formed along the moving direction of the valve core, the butt joint wall and a section line on the same side of the butt joint wall extend and cross, the section size of the part of the valve core forming the butt joint wall and the section of the part of the butt joint structure forming the butt joint wall along the moving direction of the valve core is gradually changed at will, and the valve core is in butt joint with the butt joint wall in a mode of line contact of the butt joint wall.
  2. 2. The wire-sealed valve group according to claim 1, wherein one group of two valve chambers is provided on the same side, the valve body having at least one group of mounting groups, each of the mounting groups comprising a first mounting portion and a second mounting portion, wherein the first mounting portion participates in forming the valve chamber with the oil inlet in communication with and being located in the movement direction of the spool in the corresponding valve chamber, the second mounting portion participates in forming the valve chamber with the oil outlet in communication with and being located in the movement direction of the spool in the corresponding valve chamber, the wire-sealed valve group further comprising at least one pushing mechanism, each pushing mechanism comprising a pushing member comprising a pushing group comprising a first pushing member and a second pushing member, wherein the first pushing member is movably inserted in the first mounting portion and abuts against the spool in the corresponding valve chamber, and the second pushing member is movably inserted in the second mounting portion and abuts against the corresponding pushing member in the valve chamber, and each pushing member is pushed against the corresponding pushing member.
  3. 3. The wire-sealed valve group according to claim 2, wherein each of the pushing mechanisms includes a body member including a moving group, the body member being mounted to the valve body, the valve body having at least one moving space, each of the body members having a mounting space, each of the mounting spaces being in communication with one of the moving spaces, each of the moving groups being mounted to one of the mounting spaces in such a manner that the moving group moves partially in a direction of extending into or withdrawing from the moving space, the first pushing member and the second pushing member of one of the pushing groups being held partially in the same moving space and corresponding to the same moving group without external force by the corresponding spool, and the moving group moving in a direction parallel to a moving direction of the pushing group, the moving group moving toward the mounting space so as to push the first pushing member and the second pushing member of one of the pushing groups out of the moving space so as to abut against the corresponding two or two of the corresponding spool.
  4. 4. A wire-sealed valve group according to claim 3, wherein the valve spool has a through passage, a portion of the valve chamber communicating with the oil outlet port or a portion of the valve chamber communicating with the oil inlet port communicates with the through passage, the wire-sealed valve group further comprising at least one seal member, one seal member being provided between each of the first pusher shoes and one of the first mounting portions, each of the second pusher shoes being in clearance fit with the second mounting portion.
  5. 5. The wire-sealed valve assembly of claim 4, wherein the valve chamber and the valve cartridge are each provided with a set, and the working channel is provided with one, the oil inlet and the oil outlet are each provided with one, two ports of one working channel are respectively communicated with two valve chambers of a set, and two valve cartridges of a set move in the same direction so that one valve cartridge is abutted with the corresponding abutting structure and the other valve cartridge is separated from the corresponding abutting structure, so that the working channel is communicated with the oil inlet channel or the oil outlet channel.
  6. 6. The wire-sealed valve group according to claim 5, wherein, in the case where both the valve spools are not driven, the valve spool in the valve chamber that communicates with the oil inlet is abutted with the corresponding abutting structure, and the valve spool in the valve chamber that communicates with the oil outlet is separated from the corresponding abutting structure, so that the working passage is communicated with the oil outlet passage and is blocked from the oil inlet passage, and after both the valve spools are moved by the driving force, the valve spool in the valve chamber that communicates with the oil inlet is separated from the corresponding abutting structure, and the valve spool in the valve chamber that communicates with the oil outlet is abutted with the corresponding abutting structure, so that the working passage is blocked from the oil outlet passage and is communicated with the oil inlet passage.
  7. 7. The wire-sealed valve group according to claim 5, wherein, in the case where both the valve spools are not driven, the valve spool in the valve chamber that communicates with the oil inlet is separated from the corresponding abutting structure, and the valve spool in the valve chamber that communicates with the oil outlet is abutted with the corresponding abutting structure so that the working passage is blocked from the oil outlet passage and from the oil inlet passage, and after both the valve spools are moved by the driving force, the valve spool in the valve chamber that communicates with the oil inlet is abutted with the corresponding abutting structure, and the valve spool in the valve chamber that communicates with the oil outlet is separated from the corresponding abutting structure so that the working passage is communicated with the oil outlet passage and blocked from the oil inlet passage.
  8. 8. The line-sealed valve bank according to claim 4, wherein the valve cavity and the valve core are provided with two groups, the working channels are provided with two, the oil inlet and the oil outlet are provided with two, the two valve cavities of one group are communicated with the two interfaces of the same working channel or with one interface of the two working channels, the moving directions of the two valve cores of one group are the same, the moving directions of the two valve cores of the two groups are opposite, and the two valve cores of the two groups can be moved randomly to enable the valve cores to be abutted with or separated from the abutting structure so as to control the on-off condition of the two working channels and the oil inlet channel and the oil outlet channel respectively.
  9. 9. The wire-sealed valve group according to claim 8, wherein each of the two valve chambers communicates with one of the ports of each of the two working passages, each of the two valve spools is abutted against the corresponding abutment structure in the case where each of the two valve spools is not driven to move so that each of the two working passages is blocked from the oil inlet passage and the oil outlet passage, each of the two valve spools of one of the two valve spools is separated from the corresponding abutment structure after one of the valve spools is driven to move so that one of the two working passages communicates with the oil inlet passage and the other valve spool communicates with the oil outlet passage, and each of the two valve spools is separated from the corresponding abutment structure after the two valve spools are driven to move toward each other so that each of the two working passages communicates with the oil inlet passage and the oil outlet passage.
  10. 10. The line-sealed valve group according to claim 8, wherein each of the two groups of valve chambers communicates with the interface of the two working passages, and in the case where neither of the two groups of valve chambers is driven, the two valve chambers communicating with the oil inlet port are brought into abutment with the corresponding abutment structure, and the two valve chambers communicating with the oil outlet port are separated from the corresponding abutment structure, so that both of the working passages communicate with the oil outlet passage and are blocked from the oil inlet passage, and after one of the groups of valve chambers is driven to move, either of the two valve chambers is separated from the corresponding abutment structure and the other one of the two valve chambers is brought into abutment with the corresponding abutment structure, so that one of the two working passages communicates with the oil inlet passage and is blocked from the oil outlet passage, and the other one of the two valve chambers remains in communication with the oil outlet passage, and after the two groups of valve chambers are driven to move, the two valve chambers are brought into abutment with the corresponding abutment structure, and the two valve chambers are brought into abutment with the oil inlet port and are separated from the corresponding abutment structure.

Description

Linear sealing valve group Technical Field The application relates to the technical field of valves, in particular to a linear sealing valve group. Background Valves are pipe attachments for opening and closing pipes, controlling flow direction, adjusting and controlling parameters of a transport medium, and are commonly used in various industries. At present, most valves adopt a slide valve structure, and sealing is realized by using a surface contact mode. In the valve, the slide valve slides in the valve cavity, wherein the valve cavity is communicated with the oil inlet channel or the oil outlet channel and the working channel, an abutting wall is formed between interfaces of the oil inlet channel or the oil outlet channel and the working channel, which are respectively communicated with the valve cavity, and a convex wall and a groove are formed on the peripheral side of the slide valve. When the convex wall of the slide valve is staggered with the abutting wall and the groove corresponds to the two interfaces, the oil inlet channel or the oil outlet channel is communicated with the working channel. In this process, since the spool valve is sealed by the way that the convex wall is in contact with the abutment wall surface, there is a possibility that hydraulic oil overflows from the gap between the two, and the risk of leakage is high. In addition, the spool valve is required to move a predetermined distance to realize flow direction switching, and the response speed is relatively slow. Disclosure of Invention To solve the above technical problems and to achieve at least one advantage of the present application, the present application provides a wire-sealed valve block including: The valve comprises a valve body, a plurality of oil inlets and oil outlets, wherein the valve body is provided with at least one group of valve cavities, at least one working channel, an oil inlet channel and an oil outlet channel, each working channel is provided with two interfaces, the oil inlet channel is provided with at least one oil inlet, the oil outlet channel is provided with at least one oil outlet, one group of valve cavities is provided with two valve cavities, each valve cavity is communicated with one interface, each oil inlet of the oil inlet channel is communicated with one valve cavity in one group, each oil outlet of the oil outlet channel is communicated with the other valve cavity in one group, an abutting structure is formed in each valve cavity, the interfaces communicated with the valve cavities and the oil inlets or the oil outlets are respectively arranged on two sides of the corresponding abutting structure, and the abutting structure is provided with an abutting wall; the valve core is provided with two valve cores, each valve core is movably arranged in one valve cavity to be in butt joint or separation with the corresponding butt joint structure, the valve core is provided with a butt joint wall, a section is formed along the moving direction of the valve core, the butt joint wall and a section line on the same side of the butt joint wall extend and cross, the section size of the part of the valve core forming the butt joint wall and the section of the part of the butt joint structure forming the butt joint wall along the moving direction of the valve core is gradually changed at will, and the valve core is in butt joint with the butt joint wall in a mode of line contact of the butt joint wall. According to an embodiment of the application, a set of two valve chambers are arranged on the same side, the valve body is provided with at least one set of mounting groups, each mounting group comprises a first mounting part and a second mounting part, wherein the first mounting part is engaged in forming the valve chamber communicated with the oil inlet and is positioned in the moving direction of the valve core in the corresponding valve chamber, the second mounting part is engaged in forming the valve chamber communicated with the oil outlet and is positioned in the moving direction of the valve core in the corresponding valve chamber, the linear sealing valve group further comprises at least one pushing mechanism, each pushing mechanism comprises a pushing member, each pushing member comprises a pushing group, and the pushing member comprises a first pushing member and a second pushing member, wherein the first pushing member is movably inserted in the first mounting part and is abutted against the valve core in the corresponding valve chamber, and the second pushing member is movably inserted in the second mounting part and is abutted against the valve core in the corresponding valve chamber, and each pushing member is pushed by the pushing member and is abutted against the corresponding pushing member to the valve core to move. According to an embodiment of the present application, each of the pushing mechanisms includes a body member including a moving group, the body member is mounted to the va