CN116518114A - Three-way valve and linear control system - Google Patents

Three-way valve and linear control system Download PDF

Info

Publication number
CN116518114A
CN116518114A CN202210632311.4A CN202210632311A CN116518114A CN 116518114 A CN116518114 A CN 116518114A CN 202210632311 A CN202210632311 A CN 202210632311A CN 116518114 A CN116518114 A CN 116518114A
Authority
CN
China
Prior art keywords
valve
communication port
seat
way valve
support seat
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
CN202210632311.4A
Other languages
Chinese (zh)
Inventor
许辉
龚巨秋
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.)
Shanghai Likeng Technology Co ltd
Original Assignee
Shanghai Likeng Technology 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 Shanghai Likeng Technology Co ltd filed Critical Shanghai Likeng Technology Co ltd
Priority to CN202210632311.4A priority Critical patent/CN116518114A/en
Publication of CN116518114A publication Critical patent/CN116518114A/en
Pending legal-status Critical Current

Links

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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/025—Electrically controlled valves
    • B60T15/028—Electrically controlled valves in hydraulic systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/18—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves
    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0603—Multiple-way valves
    • F16K31/0624—Lift valves
    • F16K31/0627—Lift valves with movable valve member positioned between seats

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The utility model provides a three-way valve, including the valve piece, be equipped with the valve pocket in the valve piece and with the first passageway of valve pocket intercommunication, second passageway and third passageway, be provided with the valve body in the valve pocket, the supporting seat, disk seat and mobilizable case, the upper end of supporting seat and the lower extreme fixed connection of valve body, disk seat fixed connection is in the lower extreme of supporting seat, the case can set up in the supporting seat and be located between valve body and the disk seat with reciprocating, run through in the valve body and be equipped with the first communication port of intercommunication first passageway and supporting seat inside, the supporting seat runs through and is equipped with the second communication port of intercommunication second passageway and supporting seat inside, the disk seat runs through and is equipped with the third communication port of intercommunication third passageway and supporting seat inside. The invention also provides a brake-by-wire system.

Description

Three-way valve and linear control system
Technical Field
The invention relates to the technical field of valves, in particular to a three-way valve and a linear control system.
Background
The hydraulic brake system of the passenger car is fully changed to the drive-by-wire direction, and the electromechanical hydraulic system is taken as a main stream type. Currently, a brake-by-wire system mainly comprises a master cylinder, an electric cylinder, a wheel cylinder, an electromagnetic valve, a sensor and an ECU; when a driver presses a brake pedal, an ECU of the linear control brake system detects a change value of a pedal displacement sensor connected with the pedal, and then determines how much brake pressure needs to be provided by an electric cylinder and requires a motor to work according to the change value, so that brake fluid is compressed, hydraulic pressure is built up and is conducted to wheel cylinders, and the requirement of providing braking force for a vehicle is met.
The three-way valve is widely applied to hydraulic and pneumatic control systems and has the main structure that three fluid medium connectors are arranged on a valve body, a valve cavity for communicating the three fluid medium connectors is arranged inside the valve body, a movable valve core is arranged in the valve cavity, and the on-off of channels between different connectors on the valve body is controlled by changing the position of the valve core. The common three-way valve is a two-position three-way valve or a three-position three-way valve, and is generally driven mechanically or electromagnetically to control the movement of the valve core so as to achieve the purpose of reversing. Taking a two-position three-way electromagnetic valve as an example, one end is driven by an electromagnet, and the other end is reset by mechanical force such as a spring.
However, the existing three-way valve has a complex overall structure, so that the cost and the process difficulty of parts are high, the application of the three-way valve in the industrial field is limited, and therefore, the existing three-way valve is required to be improved.
Disclosure of Invention
Therefore, the invention aims to provide the three-way valve and the linear control system which have simple overall structure and low cost and process difficulty of parts.
The invention provides a three-way valve, which comprises a valve block, wherein a valve cavity, a first channel, a second channel and a third channel which are communicated with the valve cavity are arranged in the valve block; when the valve core moves downwards, the third communication port is sealed, and the first communication port is simultaneously opened, so that the first channel and the second channel are communicated through the first communication port and the second communication port; when the valve core moves upwards, the first communication port is sealed, and the third communication port is simultaneously opened, so that the third channel and the second channel are communicated through the third communication port and the second communication port.
In an embodiment, the supporting seat is hollow and annular, is in a funnel shape with a wide upper part and a narrow lower part, a cavity is formed in the supporting seat, the valve core is accommodated in the cavity, and the second communication port penetrates through the side wall of the supporting seat.
In an embodiment, the inner diameter of the upper end of the supporting seat is larger than the inner diameter of the middle part of the supporting seat, a first step part is formed between the upper end of the supporting seat and the middle part of the supporting seat, the inner diameter of the middle part of the supporting seat is larger than the inner diameter of the lower end of the supporting seat, a second step part is formed between the middle part of the supporting seat and the lower end of the supporting seat, and the second communication port penetrates through the side wall of the middle part of the supporting seat.
In an embodiment, a first sealing ring and a second sealing ring are arranged outside the supporting seat in the valve cavity, the first sealing ring is located below the first step portion and is clamped between the inner wall of the valve cavity and the outer wall of the supporting seat, and the second sealing ring is located below the second step portion and is clamped between the inner wall of the valve cavity and the outer wall of the supporting seat.
In an embodiment, the size of the upper end of the valve core is larger than the size of the lower end of the valve core, a third stepped part is formed between the upper end of the valve core and the lower end of the valve core, an elastic piece is sleeved at the lower end of the valve core, and the elastic piece is clamped between the second stepped part and the third stepped part.
In one embodiment, the valve seat is accommodated in the supporting seat, the valve seat is in an inverted cylindrical shape, and the third communication port penetrates through the center of the top plate of the valve seat.
In one embodiment, the third communication port and the third channel are aligned up and down, and the third channel is located directly below the third communication port.
In one embodiment, the bottom of the valve seat protrudes outwards to be provided with a flange surface, and the flange surface abuts against the bottom of the supporting seat.
In one embodiment, the valve seat and the support seat are two different components, and the outer wall of the valve seat is in interference fit with the inner wall of the lower end of the support seat.
In one embodiment, the support base and the valve body are two different parts, and the inner wall of the upper end of the support base and the outer wall of the lower end of the valve body are fixed by welding.
In an embodiment, the first communication port includes a radial communication hole opened in a radial direction of the valve body and an axial communication hole opened in an axial direction of the valve body, the radial communication hole communicates with the first passage, the axial communication hole communicates with the cavity inside the support seat, and the radial communication hole communicates with the axial communication hole.
In an embodiment, an upper ring filter screen, a lower ring filter screen and a bottom ring filter screen are arranged in the valve cavity, the upper ring filter screen is arranged between the first channel and the first communication port, the lower ring filter screen is arranged between the second channel and the second communication port, and the bottom ring filter screen is arranged between the third channel and the third communication port.
In one embodiment, the center of the valve body is provided with a valve rod in an axial penetrating manner, the valve rod is arranged in the valve body in a vertically movable manner, and the lower end of the valve rod is fixedly connected with the valve core or mutually abutted.
In one embodiment, the three-way valve is an electromagnetic valve, and the three-way valve further comprises a coil and a moving iron, wherein the moving iron is positioned above the valve body, and the moving iron is fixedly connected with the upper end of the valve rod.
In one embodiment, an elastic piece is further arranged in the supporting seat, one end of the elastic piece is propped against the valve core, and the other end of the elastic piece is propped against the supporting seat or the valve seat; when the coil is electrified, the moving iron is driven to move downwards, and the valve rod drives the valve core to move downwards and compress the elastic piece; when the coil is powered off, the elastic piece pushes the valve core to move upwards through elastic force, and the valve rod drives the moving iron to move upwards.
In an embodiment, the three-way valve further comprises a magnetism isolating pipe, the inside of the magnetism isolating pipe is a cavity, the valve body and the moving iron are contained in the magnetism isolating pipe, and the valve body is fixedly connected with the magnetism isolating pipe.
The invention also provides a linear control system which comprises a master cylinder, an electric cylinder, a wheel cylinder and the three-way valve, wherein a first channel of the three-way valve is connected with the electric cylinder, a second channel of the three-way valve is connected with the wheel cylinder, and a third channel of the three-way valve is connected with the master cylinder.
The three-way valve provided by the embodiment of the invention is characterized in that the valve block is internally provided with a valve cavity, a first channel, a second channel and a third channel which are communicated with the valve cavity, the valve cavity is internally provided with a valve body, a supporting seat, a valve seat and a movable valve core, a first communication port which is communicated with the first channel and the inside of the supporting seat is arranged in the valve body in a penetrating manner, a second communication port which is communicated with the second channel and the inside of the supporting seat is arranged in the supporting seat in a penetrating manner, and a third communication port which is communicated with the third channel and the inside of the supporting seat is arranged in the valve seat in a penetrating manner. The three-way valve can enable the first channel to be communicated with the second channel or enable the third channel to be communicated with the second channel through up-and-down movement of the valve core. The three-way valve has the advantages of simple integral structure, simple structure and low cost, and the supporting seat and the valve seat are both formed by the forming process.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a three-way valve in an energized state according to an embodiment of the present invention.
Fig. 2 is a schematic partial structure of the three-way valve in fig. 1.
Fig. 3 is a schematic structural diagram of a three-way valve in a power-off state according to an embodiment of the present invention.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
The terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "horizontal," "vertical," and the like refer to an orientation or positional relationship based on that shown in the drawings, or that is conventionally put in place when the inventive product is used, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Moreover, the terms "first," "second," "third," and the like, are used merely to distinguish between similar elements and do not indicate or imply a relative importance or a particular order.
Furthermore, the terms "comprise," "include," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that elements are listed and may include other elements not expressly listed.
The embodiment of the invention provides a three-way valve which can be particularly applied to a hydraulic braking system of a passenger car, such as a brake-by-wire system, but is not limited to the three-way valve, and can be applied to other hydraulic and pneumatic control systems besides the three-way valve.
Referring to fig. 1 and 2, the three-way valve comprises a valve block 10, wherein a valve cavity 11, a first channel 12, a second channel 13 and a third channel 14 which are communicated with the valve cavity 11 are arranged in the valve block 10. The valve chamber 11 is provided with a valve body 15, a support seat 17, a valve seat 18 and a movable valve element 19. The upper end of the supporting seat 17 is fixedly connected with the lower end of the valve body 15. The valve seat 18 is fixedly connected to the lower end of the supporting seat 17. The valve element 19 is provided in the support seat 17 so as to be movable up and down, and is located between the valve body 15 and the valve seat 18. The valve body 15 is internally provided with a first communication port 21 penetrating through the first passage 12 and the inside of the supporting seat 17. The supporting seat 17 is provided with a second communication port 22 penetrating through the second channel 13 and the supporting seat 17. The valve seat 18 is provided with a third communication port 23 penetrating through the third passage 14 and the inside of the support seat 17.
Specifically, the three-way valve is an electromagnetic valve, and fig. 1 shows an energized state of the three-way valve, and referring to fig. 1, in the energized state, the valve core 19 is driven to move downward, and when the valve core 19 moves downward, the third communication port 23 is sealed and the first communication port 21 is simultaneously opened, so that the first channel 12 and the second channel 13 are communicated through the first communication port 21 and the second communication port 22. It should be noted that a gap (not shown) exists between the outer wall of the valve element 19 and the inner wall of the supporting seat 17, so that the oil can communicate between the first communication port 21 and the second communication port 22 through the gap.
Fig. 3 shows the three-way valve in a power-off state, and referring to fig. 3, in the power-off state, the valve core 19 is driven to move upwards, and when the valve core 19 moves upwards, the first communication port 21 is sealed and the third communication port 23 is opened at the same time, so that the third channel 14 and the second channel 13 are communicated through the third communication port 23 and the second communication port 22.
In order to drive the valve core 19 to move upwards, an elastic member 24 is further disposed in the supporting seat 17, in this embodiment, one end of the elastic member 24 abuts against the valve core 19, and the other end of the elastic member 24 abuts against the supporting seat 17. In the other embodiment, one end of the elastic member 24 may abut against the valve body 19, and the other end of the elastic member 24 may abut against the valve seat 18. The elastic member 24 provides elastic force to push the valve core 19 upward. Specifically, the elastic member 24 may be a spring, and is sleeved on the valve core 19, but is not limited thereto.
The supporting seat 17 is hollow and annular, and is funnel-shaped with a wider upper part and a narrower lower part. The support seat 17 has a cavity formed therein, and the valve element 19 is accommodated in the cavity. The second communication port 22 is provided through a side wall of the support seat 17. Specifically, the inner diameter of the upper end of the support seat 17 is larger than the inner diameter of the middle portion of the support seat 17, and a first step portion 25 is formed between the upper end of the support seat 17 and the middle portion of the support seat 17. The inner diameter of the middle part of the supporting seat 17 is larger than the inner diameter of the lower end of the supporting seat 17, and a second step part 26 is formed between the middle part of the supporting seat 17 and the lower end of the supporting seat 17. The second communication port 22 is provided through a side wall of the middle portion of the support seat 17. The second communication port 22 is located above the second stepped portion 26.
The upper end dimension of the valve core 19 is larger than the lower end dimension of the valve core 19, a third stepped portion 27 is formed between the upper end of the valve core 19 and the lower end of the valve core 19, and the elastic piece 24 is sleeved on the lower end of the valve core 19. In the present embodiment, the elastic member 24 is sandwiched between the second step portion 26 and the third step portion 27, that is, one end of the elastic member 24 abuts against the second step portion 26, and the other end of the elastic member 24 abuts against the third step portion 27.
The valve cavity 11 is provided with a first sealing ring 28 and a second sealing ring 29 outside the supporting seat 17, the first sealing ring 28 is positioned below the first step portion 25 and is clamped between the inner wall of the valve cavity 11 and the outer wall of the supporting seat 17, and the second sealing ring 29 is positioned below the second step portion 26 and is clamped between the inner wall of the valve cavity 11 and the outer wall of the supporting seat 17. By providing the first seal ring 28, the oil in the first passage 12 and the second passage 13 cannot leak through the outside of the support seat 17, and can only communicate through the first communication port 21, the second communication port 22, and the inside of the support seat 17. By providing the second seal ring 29, the oil in the second passage 13 and the third passage 14 cannot leak through the outside of the support seat 17, and can only communicate through the second communication port 22, the third communication port 23, and the inside of the support seat 17.
Specifically, the valve seat 18 is accommodated in the support seat 17, the valve seat 18 is in an inverted cylindrical shape, the valve seat 18 includes an annular side wall (not shown) and a top plate (not shown) located at the top end of the side wall, and the third communication port 23 is provided to penetrate through the center of the top plate of the valve seat 18. Specifically, the third communication port 23 and the third passage 14 are aligned up and down. The first channel 12 and the second channel 13 are arranged in the horizontal direction, the third channel 14 is arranged in the vertical direction, and the third channel 14 is positioned right below the third communication port 23.
The supporting seat 17 and the valve body 15 are two different components, the upper end of the supporting seat 17 is fixedly connected with the lower end of the valve body 15, and specifically, the outer wall of the lower end of the valve body 15 and the inner wall of the upper end of the supporting seat 17 are fixed by laser welding.
The valve seat 18 and the supporting seat 17 are two different components, the valve seat 18 is fixedly connected with the lower end of the supporting seat 17, specifically, the lower ends of the valve seat 18 and the supporting seat 17 are in interference press fit, namely, the outer wall of the valve seat 18 is in interference fit with the inner wall of the lower end of the supporting seat 17.
Furthermore, the bottom of the valve seat 18 is provided with a flange surface 31 protruding outward, and the flange surface 31 abuts against the bottom of the support seat 17 to prevent the valve seat 18 from being displaced relative to the support seat 17 due to the application of hydraulic force.
Specifically, the first communication port 21 includes a radial communication hole 211 opened in the radial direction of the valve body 15 and an axial communication hole 212 opened in the axial direction of the valve body 15, the radial communication hole 211 communicates with the first passage 12, the axial communication hole 212 communicates with the cavity inside the support seat 17, and the radial communication hole 211 communicates with the axial communication hole 212. In the present embodiment, the radial communication hole 211 is disposed at a position higher than or equal to the top of the support seat 17 such that the radial communication hole 211 is exposed without being blocked by the support seat 17, the radial communication hole 211 corresponds to the first passage 12, and the first passage 12 can communicate with the cavity inside the support seat 17 through the radial communication hole 211 and the axial communication hole 212.
Further, an upper ring filter screen 32, a lower ring filter screen 33 and a bottom ring filter screen 34 are arranged in the valve cavity 11, the upper ring filter screen 32 is arranged between the first channel 12 and the first communication port 21, the lower ring filter screen 33 is arranged between the second channel 13 and the second communication port 22, and the bottom ring filter screen 34 is arranged between the third channel 14 and the third communication port 23. By arranging the filter screen in the valve cavity 11, impurities in the oil can be filtered, and the impurities are prevented from entering the valve cavity 11.
The upper ring filter screen 32 and the lower ring filter screen 33 are both annular, and a filter mesh (not numbered) is disposed inside. The bottom ring filter screen 34 is cylindrical, that is, the bottom ring filter screen 34 includes an annular side wall and a circular bottom wall, in other words, the cross section of the bottom ring filter screen 34 is U-shaped, the filter mesh is only arranged on the side wall of the bottom ring filter screen 34, that is, the bottom wall of the bottom ring filter screen 34 is not provided with the filter mesh so as to increase the flow, and meanwhile, an oil groove 35 is further arranged between the side wall of the bottom ring filter screen 34 and the inner wall of the valve cavity 11 so as to prevent the gap between the bottom ring filter screen 34 and the valve block 10 from being too small to throttle.
Further, a valve rod 36 is provided to penetrate through the center of the valve body 15 in the axial direction, the valve rod 36 is provided in the valve body 15 so as to be movable up and down, and the lower end of the valve rod 36 is fixedly connected to the valve element 19 or abuts against the valve element 19.
Specifically, the three-way valve is a solenoid valve, the three-way valve further comprises a coil 37 and a moving iron 38, the moving iron 38 is located above the valve body 15, after the valve rod 36 passes through the valve body 15, the upper end of the valve rod 36 protrudes above the valve body 15, the moving iron 38 is fixedly connected with the upper end of the valve rod 36, and specifically, the upper end of the valve rod 36 and the moving iron 38 are in interference fit. When the coil 37 is electrified, the moving iron 38 is driven to move downwards, and the valve rod 36 drives the valve core 19 to move downwards and compress the elastic piece 24; when the coil 37 is powered off, the elastic piece 24 pushes the valve core 19 to move upwards through elastic force, and drives the moving iron 38 to move upwards through the valve rod 36.
Further, the three-way valve further comprises a magnetism isolating pipe 39, the upper end of the magnetism isolating pipe 39 can be sealed, the lower end of the magnetism isolating pipe 39 is formed into an opening, the inside of the magnetism isolating pipe 39 is a cavity, the valve body 15 and the moving iron 38 are accommodated in the magnetism isolating pipe 39 through the opening at the lower end of the magnetism isolating pipe 39, and the coil 37 is arranged outside the magnetism isolating pipe 39. The valve body 15 is fixedly connected with the magnetism isolating pipe 39, specifically, the outer wall of the valve body 15 and the inner wall of the magnetism isolating pipe 39 are fixed by laser welding. The moving iron 38 is movable up and down in the magnetism insulator tube 39.
When the coil 37 is electrified, the valve body 15 and the moving iron 38 are magnetized to generate suction force, because the valve body 15 and the magnetism isolating pipe 39 are connected through laser welding and cannot move, the moving iron 38 moves downwards towards the valve body 15 due to electromagnetic force, the valve rod 36 and the valve core 19 are driven to move downwards, the spring force is overcome to compress the spring, and finally the bottom of the valve core 19 is tightly attached to the top plate of the valve seat 18 to seal the third communication port 23, as shown in fig. 1, at the moment, the first channel 12 and the second channel 13 are communicated through the first communication port 21 and the second communication port 22.
When the coil 37 is powered off, the spring pushes the valve core 19, the valve rod 36 and the moving iron 38 upwards together through elastic force, and finally the top of the valve core 19 is tightly attached to the bottom wall of the valve body 15 to realize the sealing of the axial communication hole 212 of the first communication port 21, as shown in fig. 3, at this time, the third channel 14 and the second channel 13 are communicated through the third communication port 23 and the second communication port 22.
The three-way valve provided by the embodiment of the invention is characterized in that a valve cavity 11, a first channel 12, a second channel 13 and a third channel 14 which are communicated with the valve cavity 11 are arranged in a valve block 10, a valve body 15, a supporting seat 17, a valve seat 18 and a movable valve core 19 are arranged in the valve cavity 11, a first communication port 21 which is communicated with the first channel 12 and the inside of the supporting seat 17 is arranged in the valve body 15 in a penetrating manner, a second communication port 22 which is communicated with the second channel 13 and the inside of the supporting seat 17 is arranged in the supporting seat 17 in a penetrating manner, and a third communication port 23 which is communicated with the third channel 14 and the inside of the supporting seat 17 is arranged in the valve seat 18 in a penetrating manner. The three-way valve can enable the first channel 12 to be communicated with the second channel 13 or enable the third channel 14 to be communicated with the second channel 13 by moving the valve core 19 up and down. The three-way valve has a simple integral structure, and the supporting seat 17 and the valve seat 18 are both formed by a forming process, so that the three-way valve has a simple structure and low cost.
In this embodiment, the valve block 10 may be made of aluminum, the valve body 15 and the moving iron 38 may be made of low carbon steel, the support seat 17, the valve seat 18, and the magnetism insulator 39 may be made of free-cutting stainless steel, the valve core 19 may be made of plastic, and the valve rod 36 may be made of low carbon steel or free-cutting stainless steel.
The invention also provides a line control braking system which comprises a main cylinder, an electric cylinder and a wheel cylinder, and further comprises the three-way valve, wherein the first channel 12 of the three-way valve is connected with the electric cylinder, the second channel 13 of the three-way valve is connected with the wheel cylinder, and the third channel 14 of the three-way valve is connected with the main cylinder.
For other structures and principles of the brake-by-wire system, reference may be made to the prior art, and no further description is given here.
The present invention is not limited to the above embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.

Claims (17)

1. The three-way valve comprises a valve block, wherein a valve cavity, a first channel, a second channel and a third channel which are communicated with the valve cavity are arranged in the valve block, and the three-way valve is characterized in that a valve body, a supporting seat, a valve seat and a movable valve core are arranged in the valve cavity; when the valve core moves downwards, the third communication port is sealed, and the first communication port is simultaneously opened, so that the first channel and the second channel are communicated through the first communication port and the second communication port; when the valve core moves upwards, the first communication port is sealed, the third communication port is simultaneously opened, and the third channel and the second channel are communicated through the third communication port and the second communication port.
2. The three-way valve according to claim 1, wherein the support seat is hollow and annular, is funnel-shaped with a wide upper part and a narrow lower part, a cavity is formed in the support seat, the valve core is accommodated in the cavity, and the second communication port is formed through the side wall of the support seat.
3. The three-way valve according to claim 2, wherein an inner diameter of an upper end of the support seat is larger than an inner diameter of a middle portion of the support seat, a first step portion is formed between the upper end of the support seat and the middle portion of the support seat, an inner diameter of the middle portion of the support seat is larger than an inner diameter of a lower end of the support seat, a second step portion is formed between the middle portion of the support seat and the lower end of the support seat, and the second communication port is provided through a side wall of the middle portion of the support seat.
4. The three-way valve according to claim 3, wherein a first sealing ring and a second sealing ring are arranged outside the supporting seat in the valve cavity, the first sealing ring is positioned below the first step part and is clamped between the inner wall of the valve cavity and the outer wall of the supporting seat, and the second sealing ring is positioned below the second step part and is clamped between the inner wall of the valve cavity and the outer wall of the supporting seat.
5. The three-way valve according to claim 3, wherein the upper end of the valve core is larger than the lower end of the valve core, a third stepped portion is formed between the upper end of the valve core and the lower end of the valve core, an elastic member is sleeved at the lower end of the valve core, and the elastic member is clamped between the second stepped portion and the third stepped portion.
6. The three-way valve according to claim 1, wherein the valve seat is accommodated in the supporting seat, the valve seat is in an inverted cylindrical shape, and the third communication port is provided through a center position of a top plate of the valve seat.
7. The three-way valve of claim 6, wherein the third communication port and the third passage are aligned up and down, the third passage being located directly below the third communication port.
8. The three-way valve according to claim 6, wherein the bottom of the valve seat is provided with a flange surface protruding outward, the flange surface abutting against the bottom of the support seat.
9. The three-way valve of claim 6, wherein the valve seat and the support seat are two distinct components, and wherein an outer wall of the valve seat and an inner wall of the lower end of the support seat are in an interference fit.
10. The three-way valve according to any one of claims 1 to 9, wherein the support base and the valve body are two different parts, and an inner wall of an upper end of the support base and an outer wall of a lower end of the valve body are fixed by welding.
11. The three-way valve according to any one of claims 1 to 9, wherein the first communication port includes a radial communication hole opened in a radial direction of the valve body and an axial communication hole opened in an axial direction of the valve body, the radial communication hole being in communication with the first passage, the axial communication hole being in communication with a cavity inside the support seat, the radial communication hole being in communication with the axial communication hole.
12. The three-way valve of any one of claims 1-9, wherein an upper ring screen, a lower ring screen, and a bottom ring screen are disposed within the valve chamber, the upper ring screen being disposed between the first passage and the first communication port, the lower ring screen being disposed between the second passage and the second communication port, the bottom ring screen being disposed between the third passage and the third communication port.
13. The three-way valve according to any one of claims 1 to 9, wherein a valve rod is provided in the valve body so as to penetrate through the center of the valve body in the axial direction, the valve rod is provided in the valve body so as to be movable up and down, and the lower end of the valve rod is fixedly connected to the valve core or the lower end of the valve rod and the valve core are abutted against each other.
14. The three-way valve of claim 13, wherein the three-way valve is a solenoid valve, and further comprising a coil and a moving iron, the moving iron being located above the valve body, the moving iron being fixedly connected to an upper end of the valve stem.
15. The three-way valve according to claim 14, wherein an elastic member is further provided in the support seat, one end of the elastic member abuts against the valve element, and the other end of the elastic member abuts against the support seat or the valve seat; when the coil is electrified, the moving iron is driven to move downwards, and the valve rod drives the valve core to move downwards and compress the elastic piece; when the coil is powered off, the elastic piece pushes the valve core to move upwards through elastic force, and the valve rod drives the movable iron to move upwards.
16. The three-way valve of claim 15, further comprising a magnetism isolating tube, wherein the magnetism isolating tube is hollow, the valve body and the moving iron are contained in the magnetism isolating tube, and the valve body is fixedly connected with the magnetism isolating tube.
17. A brake-by-wire system comprising a master cylinder, an electric cylinder, and a wheel cylinder, and further comprising the three-way valve according to any one of claims 1 to 16, wherein a first passage of the three-way valve is connected to the electric cylinder, a second passage of the three-way valve is connected to the wheel cylinder, and a third passage of the three-way valve is connected to the master cylinder.
CN202210632311.4A 2022-06-07 2022-06-07 Three-way valve and linear control system Pending CN116518114A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210632311.4A CN116518114A (en) 2022-06-07 2022-06-07 Three-way valve and linear control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210632311.4A CN116518114A (en) 2022-06-07 2022-06-07 Three-way valve and linear control system

Publications (1)

Publication Number Publication Date
CN116518114A true CN116518114A (en) 2023-08-01

Family

ID=87403460

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210632311.4A Pending CN116518114A (en) 2022-06-07 2022-06-07 Three-way valve and linear control system

Country Status (1)

Country Link
CN (1) CN116518114A (en)

Similar Documents

Publication Publication Date Title
US6918570B2 (en) Anti-lock brake equipment solenoid valve
US20130291535A1 (en) Actuating device, method for operating an actuating device, and solenoid valve arrangement
US5402824A (en) Solenoid valve
CN105579307A (en) Brake fluid pressure control system for vehicle
CN106114486B (en) A kind of ABS electric-gas control relay valve
JP6818137B2 (en) Solenoid valve and hydraulic braking system for vehicles
JP6788947B2 (en) Solenoid valve and hydraulic braking system for vehicles
CN101583524A (en) Solenoid valve
US6880570B2 (en) Vehicle actuator
CN112145753B (en) Valve core assembly of automobile air brake ABS electromagnetic valve
US11318923B2 (en) Solenoid valve, vehicle brake hydraulic pressure control apparatus and solenoid valve fabrication method
CN116518114A (en) Three-way valve and linear control system
CN116518115A (en) Three-way valve and linear control system
CN217502666U (en) Three-way valve and brake-by-wire system
CN217502665U (en) Three-way valve and brake-by-wire system
CN217502596U (en) Pressure increasing valve
CN217502595U (en) Pressure reducing valve
CN217502737U (en) Pressure reducing valve
US10737676B2 (en) Solenoid valve
CN116518087A (en) Pressure reducing valve
EP0232783B1 (en) An electromagnetically controlled three way valve for a hydraulic circuit
CN114593214A (en) Rail transit output control valve
CN211667171U (en) Pressure boost solenoid valve
CN116518085A (en) Pressure increasing valve
CN116518086A (en) Pressure reducing valve

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination