CN117419177A - Valve device and assembly method thereof - Google Patents

Valve device and assembly method thereof Download PDF

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Publication number
CN117419177A
CN117419177A CN202210813066.7A CN202210813066A CN117419177A CN 117419177 A CN117419177 A CN 117419177A CN 202210813066 A CN202210813066 A CN 202210813066A CN 117419177 A CN117419177 A CN 117419177A
Authority
CN
China
Prior art keywords
valve
diameter section
assembly
valve device
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210813066.7A
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Chinese (zh)
Inventor
请求不公布姓名
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Sanhua Automotive Components Co Ltd
Original Assignee
Zhejiang Sanhua Automotive Components Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Sanhua Automotive Components Co Ltd filed Critical Zhejiang Sanhua Automotive Components Co Ltd
Priority to CN202210813066.7A priority Critical patent/CN117419177A/en
Publication of CN117419177A publication Critical patent/CN117419177A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
    • F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
    • F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
    • F16K3/262—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member with a transverse bore in the valve member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

The valve device comprises a valve seat assembly and a valve core assembly, the valve device is provided with a valve port, the valve core assembly can adjust the opening of the valve port, the valve seat assembly is provided with a through hole, the through hole is provided with a large-diameter section and a small-diameter section, the large-diameter section is closer to the valve port of the valve device than the small-diameter section along the axial direction of the valve device, a first plane is defined, the first plane is perpendicular to the axial direction of the valve device, the projection of the wall forming the small-diameter section on the first plane is positioned on the inner side of the projection of the valve core assembly on the first plane along the axial direction of the valve device, the large-diameter section is provided with a second opening facing the valve port, part of the valve core assembly can be placed into the large-diameter section through the second opening relative to at least part of the valve core assembly from the small-diameter section, and at least part of the valve core assembly is placed into the large-diameter section from the second opening, so that the part of the valve seat assembly forming the small-diameter section is compact in structure and is favorable for miniaturization of the valve device.

Description

Valve device and assembly method thereof
Technical Field
The present application relates to the field of fluid control technology, and in particular, to a valve apparatus and method of assembling the same.
Background
The valve device comprises a valve core assembly and a valve seat assembly, wherein the valve seat assembly is provided with a through hole, at least part of the valve core assembly is positioned in the through hole, and the structure of the valve seat assembly has a space for further optimization.
Disclosure of Invention
An object of the present application is to provide a valve device that is advantageous in compact construction of a valve seat assembly.
In order to achieve the above object, one embodiment of the present application adopts the following technical scheme:
the valve device comprises a valve seat assembly and a valve core assembly, wherein the valve device is provided with a valve port, the valve core assembly can adjust the opening of the valve port, the valve seat assembly is provided with a through hole, the through hole is provided with a large-diameter section and a small-diameter section, the large-diameter section is closer to the valve port than the small-diameter section along the axial direction of the valve device, at least part of the valve core assembly is positioned on the large-diameter section and defines a first plane, the first plane is perpendicular to the axial direction of the valve device, and the projection of the wall forming the small-diameter section on the first plane is positioned on the inner side of the projection of the valve core assembly on the first plane along the axial direction of the valve device.
A method of assembling a valve apparatus comprising a valve cartridge assembly and a valve seat assembly, the valve seat assembly having a through bore with a large diameter section and a small diameter section, the large diameter section being closer to a valve port of the valve apparatus than the small diameter section in an axial direction of the valve apparatus, defining a first plane perpendicular to the axial direction of the valve apparatus, a projection of a wall forming the small diameter section in the axial direction of the valve apparatus being located inside a projection of the valve cartridge assembly in the first plane, the large diameter section having a second opening toward the valve port, the method comprising the steps of:
and placing at least part of the valve core assembly into the large-diameter section through the second opening along the axial direction of the valve device.
One embodiment of the present application provides a valve device and an assembling method thereof, the valve device includes a valve seat assembly and a valve core assembly, a through hole of the valve seat assembly has a large diameter section and a small diameter section, the large diameter section is closer to a valve port of the valve device than the small diameter section along an axial direction of the valve device, a first plane is defined, the first plane is perpendicular to the axial direction of the valve device, a projection of a wall forming the small diameter section on the first plane is located on an inner side of a projection of the valve core assembly on the first plane along the axial direction of the valve device, the large diameter section has a second opening facing the valve port, at least part of the valve core assembly can be placed into the large diameter section through the second opening, the large diameter section is placed into the valve core assembly from the small diameter section relative to at least part of the valve core assembly, and the valve core assembly is placed into the large diameter section from the second opening, so that a part of the valve seat assembly forming the small diameter section is compact in structure and the valve device is facilitated to be miniaturized.
Drawings
FIG. 1 is a schematic cross-sectional view of one embodiment of a valve apparatus of the present application;
FIG. 2 is a schematic cross-sectional view of the valve member of the valve apparatus of FIG. 1 in a closed state;
FIG. 3 is a schematic cross-sectional view of the valve member of the valve apparatus of FIG. 1 in a closed state;
FIG. 4 is a schematic perspective view of a valve seat assembly of the valve apparatus of FIG. 1 from one perspective;
FIG. 5 is a schematic perspective view of another view of a valve seat assembly of the valve apparatus of FIG. 1;
FIG. 6 is a schematic cross-sectional view of a valve seat assembly of the valve apparatus of FIG. 1;
FIG. 7 is a schematic perspective view of a valve cartridge assembly of the valve apparatus of FIG. 1;
FIG. 8 is a schematic perspective view of another embodiment of a valve seat assembly from one perspective.
Detailed Description
The invention is further described in conjunction with the accompanying drawings 1-8 and specific embodiments, with numerous specific details set forth in the following detailed description in order to provide a thorough understanding of the invention. Those skilled in the art will appreciate that the specific components, devices, and features illustrated in the accompanying drawings and described herein are merely exemplary and should not be considered limiting.
The valve device may be applied to a vehicle thermal management system including a new energy vehicle thermal management system in which the valve device is often employed as a throttle element or a switching element or an air conditioning system, and particularly to a circulation system in which CO2 is used as a refrigerant. Referring to fig. 1, the valve device 100 includes a driving part 1 and a valve part 2, the driving part 1 is located at the periphery of a part of the valve part 2, the driving part 1 is fixedly connected or in limited connection with the valve part 2, and further, a sealing arrangement can be performed between the driving part 1 and the valve part 2, which is beneficial to preventing water vapor or other impurities in the external environment from entering from an assembly gap between the driving part 1 and the valve part 2, so that corrosion or failure inside the driving part 1 is caused. The driving part 1 comprises an outer shell and a stator assembly, wherein the stator assembly is positioned on the periphery of the part valve part 2, the driving part 1 is formed by injection molding at least by taking the stator assembly as an insert, and the outer shell is an injection molding. The valve device 100 is electrically and/or signally connected to the outside via the drive member 1.
Referring to fig. 1 to 3, the valve member 2 includes a rotor assembly 31, a screw 25, a valve body assembly 21, a valve seat assembly 20, a valve seat assembly 33, and a sleeve 32, the valve seat assembly 20 is located at the outer periphery of a portion of the screw 25 and at the outer periphery of a portion of the valve body assembly 21, the valve seat assembly 33 is located at the outer periphery of a further portion of the valve body assembly 21, the valve seat assembly 20 is fixedly connected or limitedly connected with the valve seat assembly 33, and in particular, the valve seat assembly 20 is fixedly welded with the valve seat assembly 33; the sleeve 32 is sleeved on the periphery of the rotor assembly 31, the sleeve 32 is fixedly connected with the valve seat assembly 20, the rotor assembly 31 is fixedly connected or in limiting connection with one end part of the screw rod 25, the other end part of the screw rod 25 is in transmission connection with the valve core assembly 21, and specifically, the other end part of the screw rod 25 is in threaded connection with the valve core assembly 21. The valve device 100 has a first channel 411 and a second channel 412, specifically, along the axial direction of the valve device 100, the first channel 411 is located on the side of the valve core assembly 21 away from the driving component 2, the second channel 412 is located on the radial outer side of the valve core assembly 21, the radial direction of the valve core assembly 21 is substantially perpendicular to the axial direction of the valve device 100, the substantially perpendicular is not absolutely perpendicular, and an error within 10 ° can be allowed; when the rotor assembly 31 circumferentially rotates under the excitation of the magnetic field of the stator assembly, the rotor assembly 31 drives the screw rod 25 to rotate, the screw rod 25 can drive the valve core assembly 21 to linearly reciprocate along the axial direction of the valve device 100, the valve device 100 is provided with a valve port 22, and specifically, the valve port 22 is positioned on the valve core seat assembly 33; the valve core assembly 21 can adjust the opening of the valve port 22, specifically, the valve core assembly 21 can move along the axial direction of the valve device 100 to adjust the opening of the valve port 22; the valve device 100 has a valve-open state and a valve-closed state, and when the valve device 100 is in the valve-open state, referring to fig. 3, the first passage 411 communicates with the second passage 412; when the valve device 100 is in the closed state, referring to fig. 2, the first passage 411 and the second passage 412 are not in communication. The axial direction of the valve device 100 is the N direction shown in fig. 1. It is to be understood that the fixed connection described herein includes both detachable and non-detachable connections; defining the opening degree of the valve port 22 to be 0 when closed and defining the opening degree of the valve port 22 to be 100 when fully opened, the valve core assembly 21 can adjust the opening degree of the valve port 22, and the adjustable opening degree range includes 0-100.
Referring to fig. 2 and 3, the valve device 100 includes a valve seat assembly 20, a valve core assembly 21 and a valve core seat assembly 33, the valve device 100 has a valve port 22, the valve core assembly 21 is capable of adjusting the opening degree of the valve port 22, specifically, the valve port 22 is located in the valve core seat assembly 33, and the valve core assembly 21 is capable of approaching and separating from the valve port 22 in the axial direction of the valve device 100 to adjust the opening degree of the valve port 22; the valve seat assembly 20 has a through hole 200, the through hole 200 has a large diameter section 23 and a small diameter section 24, the large diameter section 23 is closer to the valve port 22 than the small diameter section 24 in the axial direction of the valve device 100, the large diameter section 23 has a second opening 230 toward the valve port 22, at least part of the valve core assembly 21 is located in the large diameter section 23, defining a first plane, the first plane is perpendicular to the axial direction of the valve device 100, the projection of the part of the valve core assembly 21 located in the large diameter section 23 in the first plane is located inside the projection of the wall forming the second opening 230 in the axial direction of the valve device 100, the valve core assembly 21 is movable in the large diameter section 23 in the axial direction of the valve device 100, and the projection of the wall forming the small diameter section 24 in the first plane is located inside the projection of the valve core assembly 21 in the first plane. The assembly method of the valve device 100 includes: in the axial direction of the valve device 100, at least part of the spool assembly 21 is placed into the large diameter section 23 through the second opening 230. By providing the large diameter section 23 and the small diameter section 24 in the valve seat assembly 20, the large diameter section 23 is placed from the small diameter section 24 with respect to at least part of the valve element assembly 21, and the large diameter section 23 is placed from the second opening 230 with respect to at least part of the valve element assembly 21, which is advantageous in that the part of the valve seat assembly 20 forming the small diameter section 24 is compact and the miniaturization of the valve device 100 is facilitated.
It will be appreciated that a first plane is defined, which is perpendicular to the axial direction of the valve device 100, and along the axial direction of the valve device 100, the projection of the wall forming the small diameter section 24 on the first plane is located inside the projection of the wall forming the large diameter section 23 on the first plane; the large diameter section 23 may be cylindrical, prismatic, stepped, etc., the small diameter section 24 may be cylindrical, prismatic, stepped, etc., the spool assembly 21 may be cylindrical, prismatic, stepped, etc., and when the large diameter section 23, the small diameter section 24, and the spool assembly 21 are all cylindrical, the diameter of the large diameter section 23 is greater than the diameter of the small diameter section 24, the diameter of the large diameter section 23 is greater than the diameter of the spool assembly 21, and the diameter of the spool assembly 21 is greater than the diameter of the small diameter section 24. Referring to fig. 8, the large diameter section 23 is prismatic, and at least part of the valve core assembly 21 that cooperates with the wall forming the large diameter section 23 may also be prismatic, where the wall forming the large diameter section 23 can limit the circumferential rotation of the valve core assembly 21, so that the screw 25 drives the valve core assembly 21 to move along the circumferential direction of the valve device 100.
Referring to fig. 2, the part of the valve seat assembly 20 forming the small diameter section 24 is fixedly connected with the sleeve 32, and by providing the large diameter section 23 and the small diameter section 24 on the valve seat assembly 20, the large diameter section 23 is placed from the small diameter section 24 relative to at least part of the valve core assembly 21, and the large diameter section 23 is placed from the second opening 230 at least part of the valve core assembly 21, so that the part of the valve seat assembly 20 forming the small diameter section 24 is beneficial to the compact structure, and correspondingly, the compact structure of the sleeve 32 is also beneficial to the compact structure.
In some embodiments, referring to fig. 2, 3 and 6, the large diameter section 23 communicates with the small diameter section 24, the small diameter section 24 has a fourth opening 241 facing away from the valve port 22 in the axial direction of the valve device 100, defining a first plane perpendicular to the axial direction of the valve device 100, the projection of the wall forming the fourth opening 241 on the first plane is located inside the projection of the spool assembly 21 on the first plane in the axial direction of the valve device 100, the small diameter section 24 is used for placing other components other than the spool assembly 21, which may be bearings, compacts, etc., and in particular, the small diameter section 24 is used for placing the bearing 26, at least part of the bearing 26 may be placed in the small diameter section 24 through the fourth opening 241 in the axial direction of the valve device 100; by providing the large diameter section 23 and the small diameter section 24 in the valve seat assembly 20, the large diameter section 23 is placed from the small diameter section 24 relative to at least a portion of the valve core assembly 21, and the large diameter section 23 is placed from the second opening 230 relative to at least a portion of the valve core assembly 21, which is advantageous for making a portion of the valve seat assembly 20 of the small diameter section 24 compact and reducing the radial dimension of the bearing 26.
Referring to fig. 2 and 6, the valve seat assembly 20 includes a first stop 203, the first stop 203 forming at least a portion of a top wall 233 of the large diameter section 23, the small diameter section 24 having a first opening 245 in the first stop 203, the first stop 203 being adapted to abut the valve trim assembly 21 in an axial direction of the valve apparatus 100 to limit the valve trim assembly 21 from opening the valve port 22 to a maximum open valve position.
Referring to fig. 3 and 4, the valve device 100 includes a screw rod 25 and a bearing 26, a portion of the screw rod 25 is located in the through hole 200, the screw rod 25 is in threaded connection with the valve core assembly 21, the small diameter section 24 has a mating hole 242 defining a first plane, the first plane is perpendicular to an axial direction of the valve device 100, along the axial direction of the valve device 100, a projection of a wall forming the mating hole 242 on the first plane is located inside a projection of the valve core assembly 21 on the first plane, at least a portion of the bearing 26 is located in the mating hole 242, the bearing 26 includes a first sub-portion 261 and a second sub-portion 262, the first sub-portion 261 is capable of sliding relative to the second sub-portion 262, the first sub-portion 261 is fixedly connected or in limited connection with the valve seat assembly 20, the second sub-portion 262 is fixedly connected or in limited connection with the screw rod 25, specifically, referring to fig. 3, the bearing 26 is a radial force bearing, the first sub-portion 261 is located radially outside the second sub-portion 262, the first sub-portion 261 of the bearing 26 is in interference fit with the wall forming the mating hole 242, and the second sub-portion 262 of the bearing 26 is interference fit with the screw rod 25; along the axial direction of the valve device 100, the projection of the wall forming the fitting hole 242 on the first plane is located inside the projection of the wall forming the large diameter section 23 on the first plane. By providing the mating hole 242 of the bearing 26, at least part of which is located at the small diameter section 24, at least part of the valve core assembly 21 is located at the large diameter section 23, the first limiting portion 203 of the valve seat assembly 20 forms at least part of the top wall 233 of the large diameter section 23, and the first limiting portion 203 is used for abutting against the valve core assembly 21 to limit the valve core assembly 21 to open the valve port 22 at the maximum valve opening position, which is beneficial to avoiding the valve core assembly 21 from directly abutting against the bearing 26, avoiding the valve core assembly 21 from colliding with the bearing 26 and wearing, and being beneficial to prolonging the service life of the valve device 100.
Referring to fig. 3, 4 and 6, the small diameter section 24 has a first hole section 243, the first hole section 243 is closer to the large diameter section 23 than the fitting hole 242 in the axial direction of the valve device 100, a projection of a wall forming the first hole section 243 on a first plane is located inside a projection of a wall forming the fitting hole 242 on the first plane in the axial direction of the valve device 100, a projection of a wall forming the first hole section 243 on the first plane is located inside a projection of the spool assembly 21 on the first plane in the axial direction of the valve device 100, the wall forming the first hole section 243 includes a first abutment portion 201, the first abutment portion 201 is in contact with a first sub-portion 261 of the bearing 26 in the axial direction of the valve device 100, the first abutment portion 201 is provided extending in the circumferential direction of the bearing 26, and specifically, the first abutment portion 201 is annular; the first abutment 201 can act as an axial stop for the bearing 26. It will be appreciated that, in the axial direction of the valve device 100, the valve core assembly 21 is capable of moving in the large diameter section 23, and the first abutment 201 may also act as a stop structure for axial movement of the valve core assembly 21, the first abutment 201 being used to limit the maximum valve opening position of the valve core assembly 21.
Referring to fig. 3, 4 and 6, the minor diameter section 24 has a second bore section 244, the second bore section 244 being farther from the first bore section 243 than the mating bore 242 in the axial direction of the valve apparatus 100, the second bore section 244 being in communication with the mating bore 242, the second bore section 244 being in communication with the fourth opening 241, the projection of the wall forming the mating bore 242 in the first plane being located inwardly of the projection of the wall forming the second bore section 244 in the first plane in the axial direction of the valve apparatus 100, the projection of the wall forming the second bore section 244 in the first plane being located inwardly of the projection of the spool assembly 21 in the first plane, the projection of the wall forming the second bore section 244 in the first plane being located inwardly of the projection of the wall forming the major diameter section 23 in the axial direction of the valve apparatus 100, the stop assembly 27 being located inwardly of the valve seat assembly 20 in the axial direction of the valve apparatus 100, a portion of the stop assembly 27 being located inwardly of the second bore section 244, the stop assembly 27 being fixedly or limitedly connected to the valve seat assembly 20, in particular, the stop assembly 27 being fixedly connected to the wall forming the second bore section 244; by providing the large diameter section 23 and the small diameter section 24 in the valve seat assembly 20, the small diameter section 24 has the second hole section 244, the wall forming the second hole section 244 is fixedly connected with the stop assembly 27, and the large diameter section 23 is placed from the small diameter section 24 relative to at least part of the valve core assembly 21, and the large diameter section 23 is placed from the second opening 230 at least part of the valve core assembly 21, so that the valve seat assembly 20 forming the small diameter section 24 is beneficial to the compact structure of the stop assembly 27. In the axial direction of the valve device 100, the stop assembly 27 is in contact with the first sub-portion 261 of the bearing 26, and the stop assembly 27 can act as an axial stop for the bearing 26. It will be appreciated that referring to fig. 3, the stop assembly 27 may include a spring rail and a stop ring, the rotor assembly 31 including a stop rod, the stop assembly 27 being configured to limit the rotational angle of the rotor assembly 31 and, in turn, the axial displacement of the spool assembly 21.
Referring to fig. 3, 5 and 6, the large diameter section 23 has a third hole section 231 and a fourth hole section 232, the third hole section 231 is closer to the small diameter section 24 than the fourth hole section 232 in the axial direction of the valve device 100, the third hole section 231 communicates with the small diameter section 24, the projection of the wall forming the small diameter section 24 on the first plane is located inside the projection of the wall forming the third hole section 231 on the first plane in the axial direction of the valve device 100, the projection of the wall forming the third hole section 231 on the first plane is located inside the projection of the wall forming the fourth hole section 232 on the first plane, specifically, the third hole section 231 and the fourth hole section 232 are circular holes, and the diameter of the third hole section 231 is smaller than the diameter of the fourth hole section 232; along the axial direction of the valve device 100, the valve core assembly 21 can move in the third hole section 231 and the fourth hole section 232, and specifically, the third hole section 231 is in guide fit with the valve core assembly 21, so that the movement of the valve core assembly 21 is facilitated; the valve device 100 includes a first seal assembly 28, at least a portion of the first seal assembly 28 being located in a fourth bore segment 232, the first seal assembly 28 being compressed between the valve seat assembly 20 and the valve spool assembly 21 in a radial direction of the valve spool assembly 21, the first seal assembly 28 being configured to relatively separate the third bore segment 231 from the second passage 412. By providing the fourth bore section 232 of the first seal assembly 28 at least partially within the large diameter section 23, providing the small diameter section 24 at least partially relative to the first seal assembly 28 facilitates providing a compact portion of the valve seat assembly 20 of the small diameter section 24.
It can be understood that the first sealing component 28 may be an O-type rubber ring, and the first sealing component 28 may also be a combination of an O-type rubber ring and a sealing ring, when the first sealing component 28 is a combination of an O-type rubber ring and a sealing ring, the O-type rubber ring is located at the radial outer side of the sealing ring, along the radial direction of the valve core component 21, the sealing ring contacts with the valve core component 21, the sealing ring is made of plastic or metal, and specifically, the sealing ring is made of wear-resistant materials such as ptfe+ CF, PP, PE, PPS, PEEK, SUS 303F; a sealing ring of wear resistant material is used to contact the spool assembly 21, which is beneficial to improving the service life of the first seal assembly 28.
Referring to fig. 3, 5 and 6, the valve seat assembly 20 has a limit groove 29, the limit groove 29 is provided to extend in the axial direction of the valve device 100, the limit groove 29 has a third opening 291 in a wall forming the third hole section 231, the third opening 291 is provided toward the valve core assembly 21 in the radial direction of the valve core assembly 21, and the limit groove 29 is located radially outside the third hole section 231; referring to fig. 3 and 7, the valve core assembly 21 includes a second limiting portion 211 and a body portion 212, the second limiting portion 211 protrudes relative to the body portion 212 along a radial direction of the valve core assembly 21, at least a portion of the second limiting portion 211 is located in the limiting groove 29, a wall forming the limiting groove 29 is in guiding fit with the second limiting portion 211 along an axial direction of the valve device 100, and the wall forming the limiting groove 29 can limit circumferential rotation of the valve core assembly 21 so that the screw 25 drives the valve core assembly 21 to move along the axial direction of the valve device 100. If the valve core assembly 21 provided with the second limiting part 211 is put into the large-diameter section 23 from the small-diameter section 24, a groove needs to be arranged on the valve seat assembly 20 part forming the small-diameter section 24 or the radial dimension of the small-diameter section 24 needs to be enlarged so that the second limiting part 211 of the valve core assembly 21 passes through; in the present embodiment, by providing the limit groove 29 on the radially outer side of the third hole section 231 of the large-diameter section 23, at least part of the valve element assembly 21 is placed into the large-diameter section 23 from the second opening 230, and the large-diameter section 23 is placed into the small-diameter section 24 with respect to the valve element assembly 21, without providing a groove in the valve seat assembly 20 portion forming the small-diameter section 24 or enlarging the radial dimension of the small-diameter section 24, the partial structure of the valve seat assembly 20 forming the small-diameter section 24 is facilitated to be compact, and the miniaturization of the valve device 100 is facilitated.
It can be appreciated that the number of the limiting grooves 29 may be plural, the number of the second limiting portions 211 may be plural, and the plural fingers herein may be more than two, and the plurality of limiting grooves 29 and the plurality of second limiting portions 211 may be equally distributed along the circumference of the valve core assembly 21, which is beneficial to the uniform stress of the valve core assembly 21.
Referring to fig. 3, the valve seat assembly 20 includes a gasket 202, the gasket 202 is located in the fourth hole section 232, the gasket 202 is annular, along the axial direction of the valve device 100, the gasket 202 is located at one end of the limiting groove 29 near the fourth hole section 232, the gasket 202 forms part of the wall of the limiting groove 29, the gasket 202 is fixedly connected or in limiting connection with the valve seat assembly 20, and along the axial direction of the valve device 100, the gasket 202 is in contact with or in gap with the first seal assembly 28; the valve device 100 can be used to circulate high-pressure working medium, and by providing the annular gasket 202, the first sealing assembly 28 is uniformly stressed, and the sealing effect is improved. It will be appreciated that the spacer 202 may act as a stop for the valve element assembly 21, and that the second stop 211 of the valve element assembly 21 may be in contact with the spacer 202 in the axial direction of the valve device 100, the spacer 202 being configured to limit the maximum valve closing position of the valve element assembly 21.
Referring to fig. 1, the valve device 100 includes a driving part 1, the driving part 1 can drive the valve core assembly 21 to move along the axial direction of the valve device 100, the valve device 100 is provided with a containing cavity 35 and a balance channel 34, the containing cavity 35 and a first channel 411 are positioned on different sides of the valve core assembly 21 along the axial direction of the valve device 100, the containing cavity 35 is closer to the driving part 1 than the first channel 411, a large-diameter section 23 forms at least part of the containing cavity 35, a second channel 412 is positioned on the radial outer side of the valve core assembly 21, at least part of the balance channel 34 is formed on the valve core assembly 21, and in particular, the valve core assembly 21 is in threaded fit with a screw rod 25, and a thread clearance of the thread clearance forms part of the balance channel 34; the balance channel 34 communicates with the accommodation chamber 35. When the valve device 100 is in the closed state, referring to fig. 1, the accommodating chamber 35 is communicated with the balance channel 34, the balance channel 34 is communicated with the first channel 411, and the working medium of the first channel 411 can flow into the accommodating chamber 35 through the balance channel 34, so that the pressure difference between the two ends of the valve core assembly 21 in the axial direction is reduced, the axial direction of the valve core assembly 21 is approximately parallel to the axial direction of the valve device 100, and an error within 10 degrees can be allowed.
It should be noted that: the above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention may be modified or substituted by the same, and all the technical solutions and modifications thereof without departing from the spirit and scope of the present invention are intended to be included in the scope of the claims of the present invention.

Claims (9)

1. A valve device comprising a valve seat assembly (20) and a valve core assembly (21), the valve device having a valve port (22), the valve core assembly (21) being capable of adjusting the opening of the valve port (22), the valve seat assembly (20) having a through bore (200), the through bore (200) having a major diameter section (23) and a minor diameter section (24), along the axial direction of the valve device, the major diameter section (23) being closer to the valve port (22) than the minor diameter section (24), at least part of the valve core assembly (21) being located in the major diameter section (23), defining a first plane which is perpendicular to the axial direction of the valve device, along the axial direction of the valve device, the projection of the wall forming the minor diameter section (24) on the first plane being located inside the projection of the valve core assembly (21) on the first plane.
2. A valve device according to claim 1, characterized in that: the valve seat assembly (20) comprises a first limiting portion (203), the first limiting portion (203) forms at least part of a top wall (233) of the large-diameter section (23), the small-diameter section (24) is provided with a first opening (245) in the first limiting portion (203), and the first limiting portion (203) is used for being abutted with the valve core assembly (21).
3. A valve device according to claim 1 or 2, characterized in that: the valve device comprises a screw rod (25) and a bearing (26), wherein a part of the screw rod (25) is located in the through hole (200), the screw rod (25) is in threaded connection with the valve core assembly (21), the small-diameter section (24) is provided with a matching hole (242), at least part of the bearing (26) is located in the matching hole (242), the projection of the wall forming the matching hole (242) on a first plane is located on the inner side of the projection of the wall forming the large-diameter section (23) on the first plane, the bearing (26) comprises a first sub-portion (261) and a second sub-portion (262), the first sub-portion (261) can slide relative to the second sub-portion (262), the first sub-portion (261) is fixedly connected with the valve seat assembly (20) or in limiting connection, and the second sub-portion (262) is fixedly connected with the screw rod (25) or in limiting connection.
4. A valve device according to claim 3, characterized in that: the small diameter section (24) has a first hole section (243), the first hole section (243) is closer to the large diameter section (23) than the mating hole (242) in the axial direction of the valve device, a projection of a wall forming the first hole section (243) on a first plane is located inside a projection of a wall forming the mating hole (242) on the first plane, the wall forming the first hole section (243) includes a first abutting portion (201), and the first abutting portion (201) is in contact with the first sub-portion (261) in the axial direction of the valve device.
5. Valve device according to claim 4, the small diameter section (24) having a second bore section (244), the second bore section (244) being further away from the first bore section (243) than the mating bore (242) in the axial direction of the valve device, the projection of the wall forming the mating bore (242) in a first plane being located inside the projection of the wall forming the second bore section (244) in a first plane, the projection of the wall forming the second bore section (244) in a first plane being located inside the projection of the wall forming the large diameter section (23) in a first plane, the valve device comprising a stop assembly (27), part of the stop assembly (27) being located in the second bore section (244), the stop assembly (27) being fixedly or limitedly connected with the valve seat assembly (20), the stop assembly (27) being in contact with the first sub-portion (261) of the bearing (26) in the axial direction of the valve device.
6. A valve arrangement according to any one of claims 1-5, characterized in that: the large diameter section (23) has a third hole section (231) and a fourth hole section (232), the third hole section (231) is closer to the small diameter section (24) than the fourth hole section (232) along the axial direction of the valve device, the projection of the wall forming the small diameter section (24) on the first plane is located on the inner side of the projection of the wall forming the third hole section (231) on the first plane, the projection of the wall forming the third hole section (231) on the first plane is located on the inner side of the projection of the wall forming the fourth hole section (232) on the first plane, the valve device comprises a first sealing assembly (28), at least part of the first sealing assembly (28) is located on the fourth hole section (232), and the first sealing assembly (28) is pressed between the valve seat assembly (20) and the valve element assembly (21) along the radial direction of the valve element assembly (21).
7. The valve device of claim 6, wherein: the valve seat assembly (20) is provided with a limit groove (29), the limit groove (29) is arranged along the axial extension of the valve device, the limit groove (29) is provided with a third opening (291) on the wall forming the third hole section (231), the valve core assembly (21) comprises a second limit part (211), and at least part of the second limit part (211) is positioned in the limit groove (29).
8. The valve device of claim 7, wherein: the valve seat assembly (20) comprises a gasket (202), the gasket (202) is located at the fourth hole section (232), the gasket (202) is annular, and the gasket (202) is located at one end, close to the fourth hole section (232), of the limit groove (29) along the axial direction of the valve device.
9. A method of assembling a valve device comprising a valve cartridge assembly (21) and a valve seat assembly (20), the valve seat assembly (20) having a through bore (200), the through bore (200) having a large diameter section (23) and a small diameter section (24), the large diameter section (23) being closer to a valve port (22) of the valve device than the small diameter section (24) in an axial direction of the valve device, defining a first plane perpendicular to the axial direction of the valve device, a projection of a wall forming the small diameter section (24) in the axial direction of the valve device on the first plane being located inside a projection of the valve cartridge assembly (21) on the first plane, the large diameter section (23) having a second opening (230) toward the valve port (22), the method comprising the steps of:
in the axial direction of the valve device, a part of the valve core assembly (21) is placed into the large-diameter section (23) through the second opening (230).
CN202210813066.7A 2022-07-11 2022-07-11 Valve device and assembly method thereof Pending CN117419177A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210813066.7A CN117419177A (en) 2022-07-11 2022-07-11 Valve device and assembly method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210813066.7A CN117419177A (en) 2022-07-11 2022-07-11 Valve device and assembly method thereof

Publications (1)

Publication Number Publication Date
CN117419177A true CN117419177A (en) 2024-01-19

Family

ID=89531263

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210813066.7A Pending CN117419177A (en) 2022-07-11 2022-07-11 Valve device and assembly method thereof

Country Status (1)

Country Link
CN (1) CN117419177A (en)

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