CN115264121A - Reversing valve with self-locking function and position feedback and using method thereof - Google Patents

Reversing valve with self-locking function and position feedback and using method thereof Download PDF

Info

Publication number
CN115264121A
CN115264121A CN202210882601.4A CN202210882601A CN115264121A CN 115264121 A CN115264121 A CN 115264121A CN 202210882601 A CN202210882601 A CN 202210882601A CN 115264121 A CN115264121 A CN 115264121A
Authority
CN
China
Prior art keywords
armature
valve
assembly
switch
valve core
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
CN202210882601.4A
Other languages
Chinese (zh)
Inventor
李健
周进
程志
林志远
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.)
BorgWarner Automotive Components Ningbo Co Ltd
Original Assignee
BorgWarner Automotive Components Ningbo 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 BorgWarner Automotive Components Ningbo Co Ltd filed Critical BorgWarner Automotive Components Ningbo Co Ltd
Priority to CN202210882601.4A priority Critical patent/CN115264121A/en
Publication of CN115264121A publication Critical patent/CN115264121A/en
Pending legal-status Critical Current

Links

Images

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
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • 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
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F16K11/0712—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides comprising particular spool-valve sealing means
    • 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
    • F16K31/061—Sliding valves
    • F16K31/0613—Sliding valves with cylindrical slides
    • 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
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • 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
    • F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
    • F16K31/082—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet using a electromagnet and a permanent magnet
    • 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The invention provides a reversing valve with a self-locking function and position feedback, which relates to the technical field of reversing valves and comprises a valve seat assembly, wherein a return spring, a valve core and an armature assembly are sequentially arranged in an inner cavity of the valve seat assembly from left to right, the valve core and the armature assembly are both slidably connected with the inner cavity of the valve seat assembly, a driving assembly is arranged on the valve seat assembly and externally connected with a controller, a permanent magnet capable of adsorbing the armature assembly is arranged on the left side of the armature assembly, the armature assembly can push the valve core to move so that the valve core switches a flow channel, the driving assembly is used for driving the armature assembly to be close to or adsorbed on the permanent magnet, and a position feedback device for detecting the flow channel state of the valve core is arranged on the right side of the valve seat assembly. The state switching is completed only by short power-on, and the rest states can be kept unchanged at a low level or power-off state, so that the energy consumption is reduced, and the system stability can be improved; the position of the valve core can be detected, so that a user can more conveniently judge the state of the flow channel.

Description

Reversing valve with self-locking function and position feedback and using method thereof
Technical Field
The invention relates to the technical field of reversing valves, in particular to a reversing valve with a self-locking function and position feedback and a using method thereof.
Background
The reversing valve is a directional control valve with more than two flow forms and more than two oil ports. The valve realizes communication, cutting off and reversing of hydraulic oil flow, pressure unloading and sequential action control. The valve is controlled by the relative movement direction of the valve core and the valve body. There are two types, a rotary valve type and a slide valve type. The valve core is divided into two positions, three positions and the like according to the number of the working positions of the valve core staying in the valve body; the oil way connected with the valve body is divided into a two-way, a three-way, a four-way, a six-way and the like; the movement modes of the operation valve core are manual, motor, electric, hydraulic, electrohydraulic and the like.
The existing double-flow-passage reversing valve needs to be electrified to provide electromagnetic force when and after the flow passage is replaced, otherwise the existing double-flow-passage reversing valve is switched back to the original flow passage, so that the consumption is high when the flow passage is replaced, the system is not stable enough, and a user cannot judge the position of a valve core when the valve is used, and the state of the flow passage cannot be judged very inconveniently.
Disclosure of Invention
The invention solves the problems that the consumption is high when the flow channel is replaced, the system is not stable enough, and a user cannot judge the position of the valve core and the state of the flow channel when in use.
In order to solve the problems, the reversing valve with the self-locking function and the position feedback function and the using method thereof provided by the invention comprise a valve seat assembly, wherein a return spring, a valve core and an armature assembly are sequentially arranged in an inner cavity of the valve seat assembly from left to right, two ends of the return spring are respectively connected with the left inner wall of the inner cavity of the valve seat assembly and the right side of the valve core, the valve core and the armature assembly are both slidably connected with the inner cavity of the valve seat assembly, a driving assembly used for providing electromagnetic force for the armature assembly is arranged on the valve seat assembly, the driving assembly is externally connected with a controller, a permanent magnet capable of adsorbing the armature assembly is arranged on the left side of the armature assembly, the armature assembly can push the valve core to move so that the valve core can switch a flow channel, the driving assembly is used for driving the armature assembly to be close to the permanent magnet or be adsorbed on the permanent magnet, and a position feedback device used for detecting the state of the flow channel of the valve core is arranged on the right side of the valve seat assembly.
In the scheme, when a driving component inputs a signal with a positive high level and a negative high level, the permanent magnet is a magnetic object, the permanent magnet can adsorb or repel the armature component, when the armature component is adsorbed by the permanent magnet, the valve core can move along with the armature component so as to change the flow channel mode of the valve core, and when the permanent magnet repels the armature component, the armature component and the valve core can reset under the action of a reset spring so as to switch the valve core into an initial flow channel mode, so that the state switching can be completed only by short power-on, the rest states can be kept at a low level or power-off state, the initial position of the valve core is kept motionless, and the energy consumption is reduced, and the system stability can be improved; the multi-channel synchronous switching is realized, and when a plurality of groups of valves are combined in series and parallel, a system with complex functions and high degree of freedom can be formed; and when the runner is replaced, the direct current consumption is low, the system is stable, and the position of the valve core can be detected, so that a user can judge the state of the runner more conveniently.
Preferably, the armature assembly comprises an armature and a first push rod, the left side of the armature is provided with the first push rod which is used for pushing the valve core when the armature is adsorbed by the permanent magnet and is not magnetic, and the permanent magnet is provided with a first through hole which is larger than the diameter of the first push rod and smaller than the diameter of the armature and is used for the first push rod to pass through.
In this scheme, through setting up armature and first push rod can be when armature adsorbs on the permanent magnet, thereby first push rod promotes the valve core and makes the runner state of case change.
As a further preference, the valve seat assembly comprises a valve sleeve and a sleeve, the sleeve is arranged on the right side of the valve sleeve, and the sleeve is connected with the valve sleeve.
In this scheme, shell and valve barrel fixed connection become whole with the restraint of whole part. The shell is communicated with the inner cavity of the valve sleeve, so that parts can be installed and placed better and more conveniently.
As a further preferred, the position feedback device includes a switch, a switch is disposed on the right side of the armature, the armature assembly further includes a second push rod, the second push rod is disposed on the right side of the armature, and the second push rod is movably connected with the switch to control the switch to be opened or closed.
In this scheme, can survey case position in real time through setting up the switch, feed back the connected state of valve port promptly. When the position of the armature does not change, the switch is in an open circuit state under the action of the second push rod, when a worker verifies that the switch is in the open circuit state, the valve core is in a first flow channel state, when the armature is adsorbed to the permanent magnet, the switch is in a closed circuit state to output a high level signal, and when the worker verifies, the valve core can be determined to be in a second flow channel state.
Preferably, a sealing ring is arranged between the second push rod and the switch, a second through hole is formed in the sealing ring, and the second push rod penetrates through the second through hole.
In this scheme, through setting up the sealing ring, and the sealing ring is placed in telescopic inside to form radial seal through the sealing washer, make sealing performance better.
As a further preference, a mounting groove is formed in the right side of the sealing ring, the switch part is inserted into the mounting groove, and the second through hole is communicated with the mounting groove.
In this scheme, the switch path section is provided with the sealing washer, inserts and forms radial seal in the mounting groove of sealing ring and can make sealing performance better.
Preferably, a third through hole is formed in the right side of the sleeve, the switch part penetrates through the third through hole to be connected with the mounting groove, and an elastic diaphragm is arranged on one side, close to the bottom wall of the mounting groove, of the switch.
In this scheme, can completely cut off the effect of impurity and pollutant through setting up elastic diaphragm.
As a further preferred option, the driving assembly includes a coil, an inner iron core and an outer iron core, the outer iron core is disposed outside the inner iron core, and the coil is disposed between the inner iron core and the outer iron core.
In this scheme, can realize the linear proportional control to case displacement and increase case stroke through setting up drive assembly.
Preferably, a casing for wrapping the driving assembly and the switch is arranged on the outer side of the sleeve, the switch and the driving assembly are both arranged in the casing, and a socket connected with the controller is arranged on one side of the casing.
In this scheme, the shell is provided with the switch holding chamber for the axial restraint switch.
Further preferably, sealing rings for sealing are provided between the housing and the sleeve and between the housing and the valve housing, respectively.
In this scheme, through set up the sealing washer in the junction, can be so that the leakproofness is better.
A use method of a reversing valve with a self-locking function and position feedback comprises the following steps:
s1, inputting a low level signal from a socket through a controller, keeping the position of an armature still, enabling a second push rod to abut against a switch, keeping the position of a valve core still, and enabling the valve core to be in a first circulation state;
s2, when a flow channel needs to be switched, a controller changes a socket input signal into a positive high level, the armature moves towards the direction of the permanent magnet and is adsorbed by the permanent magnet, the valve core moves along with the armature under the action of the first push rod of the armature, and the valve core is switched to a second circulation state;
s3, when the valve core needs to be changed into a first flow passage state, the controller changes the input signal of the socket into a reverse high level, the armature moves away from the permanent magnet, the valve core resets according to the elastic force of the reset spring, the second push rod abuts against the switch again, and the valve core is switched into a first circulation state.
Drawings
FIG. 1 is a schematic cross-sectional structural view of a reversing valve with self-locking and position feedback of the present invention;
fig. 2 is an exploded view of the reversing valve with self-locking function and position feedback of the present invention.
In the figure: 1. an armature; 2. a seal ring; 3. a switch; 4. an elastic diaphragm; 5. a valve housing; 6. a return spring; 7. a valve core; 8. a sleeve; 9. a second push rod; 10. a first push rod; 11. an outer core; 12. a coil; 13. an inner core; 14. a housing; 15. and a permanent magnet.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
A reversing valve with a self-locking function and position feedback and a using method thereof comprise a valve seat assembly, wherein a reset spring 6, a valve core 7 and an armature assembly are sequentially arranged in an inner cavity of the valve seat assembly from left to right, two ends of the reset spring 6 are respectively connected with the inner wall of the left side of the inner cavity of the valve seat assembly and the right side of the valve core 7, the valve core 7 and the armature assembly are both slidably connected with the inner cavity of the valve seat assembly, a driving assembly used for providing electromagnetic force for the armature assembly is arranged on one side of the valve seat assembly, the driving assembly is externally connected with a controller, a permanent magnet 15 capable of adsorbing the armature assembly is arranged on the left side of the armature assembly, the armature assembly can push the valve core 7 to move so as to enable the valve core 7 to switch a flow channel, the driving assembly is used for driving the armature assembly to be close to the permanent magnet 15 or be adsorbed on the permanent magnet 15, and a position feedback device used for detecting the flow channel state of the valve core 7 is arranged on the right side of the valve seat assembly. As shown in fig. 1, the left side of fig. 1 is the left side in the description of the present embodiment, and the right side of fig. 1 is the right side in the description of the present embodiment.
Further, as a better implementation mode, in the scheme, when a driving component inputs a signal with a positive high level and a negative high level, the permanent magnet 15 is a magnetic object, the permanent magnet 15 can adsorb or repel the armature component, when the armature component is adsorbed by the permanent magnet 15, the valve core 7 can move along with the permanent magnet to change the flow channel mode of the valve core 7, and when the permanent magnet 15 repels the armature component, the armature component and the valve core 7 can reset under the action of the reset spring 6 to switch the valve core 7 into an initial flow channel mode, so that state switching can be completed only by short energization, the initial position of the valve core 7 can be kept motionless in other states with low level or power off, energy consumption is reduced, and system stability can be improved; the multi-channel synchronous switching is realized, and when a plurality of groups of valves are combined in series and parallel, a system with complex functions and high degree of freedom can be formed; and when the runner is replaced, the runner is not required to be always electrified, so that the consumption is low and the system is stable.
Further, as a preferred embodiment, the valve seat assembly includes a valve sleeve 5 and a sleeve 8, the sleeve 8 is disposed on one side of the valve sleeve 5, a return spring 6 and a valve core 7 are disposed in the valve sleeve 5, an armature assembly and a sealing ring 2 are disposed in the sleeve 8, the sealing ring 2 is disposed on one side of the armature assembly away from the permanent magnet 15, the permanent magnet 15 is disposed between the valve sleeve 5 and the sleeve 8, and the valve sleeve 5 is connected with the sleeve 8. The armature component comprises an armature 1 and a first push rod 10, one side of the armature 1, which is close to the permanent magnet 15, is provided with the first push rod 10, the permanent magnet 15 is provided with a first through hole which is larger than the diameter of the first push rod 10 and smaller than the diameter of the armature 1, the first push rod 10 can penetrate through the first through hole, and the first push rod 10 is in inertial connection with the valve core 7. The first push rod 10 is made of a non-magnetic material, and the first push rod 10 cannot push the valve core 7 under the action of the magnetic field of the permanent magnet 15, so that the flow channel cannot be replaced.
Further, as a preferred embodiment, by providing the armature 1 and the first push rod 10, when the armature 1 approaches the permanent magnet 15, the first push rod 10 pushes the valve core 7 so as to change the flow passage state of the valve core 7. Axial and radial through holes are respectively arranged on the valve core 7, and are communicated with the cavities at two ends of the valve core 7 to balance the hydraulic pressure applied on the end surface of the valve core 7. In addition, if necessary, the diameter of the radial through hole can be changed, so that the valve core 7 obtains corresponding viscous damping force during the movement process, and the stability of the valve core 7 is improved. The peripheral side wall of the valve sleeve 5 is provided with a plurality of groups of special-shaped overflowing through holes and a plurality of groups of sealing ring grooves. The special-shaped overflowing through hole is used for realizing the functions of two inlets and four outlets of the valve sleeve 5, and the sealing ring groove is used for placing a sealing ring, so that the sealing performance is better. One end of the valve sleeve 5 is of a completely closed structure and is used for placing a return spring 6; the other end is a through hole structure, and the side face is provided with an annular groove structure for placing the sleeve 8 and a flange face structure for placing the sealing ring. The return spring 6 is in a compressed state during operation and tends to push the valve element 7 out of the valve sleeve 5. The armature 1 is made of ferromagnetic material. Four groups of axial through grooves are arranged on the side surface; the inside is provided with a through hole. The side of the first push rod 10 is provided with a flange structure which plays the role of limiting and magnetic isolation. The first push rod 10 is pressed into the armature 1 in an interference mode and is in inertial connection with the valve core 7, and a first through hole which is axially formed is formed in the middle of the permanent magnet 15, so that the first push rod 10 can freely penetrate through the permanent magnet 15 and then is connected with the valve core 7 to push the valve core 7. The upper and lower sides of the permanent magnet 15 are provided with flange surfaces, so that the permanent magnet 15 can be fixed between the valve sleeve 5 and the sleeve 8.
Further, as an embodiment of a preferred, the position feedback device includes switch 3, the right side of armature 1 is provided with switch 3, the armature subassembly still includes second push rod 9, second push rod 9 sets up in the right side of armature 1, the mounting groove has been seted up on the right side of sealing ring 2, and switch 3's part is inserted and is located the mounting groove, the second through-hole has been seted up on sealing ring 2, second push rod 9 wears to establish the second through-hole and is used for the state that switch 3 passes through or open circuit with switch 3 swing joint, the second through-hole is linked together with the mounting groove. One side of the switch 3 close to the bottom wall of the mounting groove is provided with an elastic diaphragm 4. One side of the sleeve 8 close to the switch 3 is provided with a third through hole, and the switch 3 partially penetrates through the third through hole to be connected with the mounting groove. The second tappet 9 is pressed into the armature 1 with interference.
Further, as a preferred embodiment, in this scheme, the position of the valve element 7, that is, the communication state of the feedback valve port, can be detected in real time by setting the switch 3. When the position of the armature 1 is not changed, the switch 3 is in an open circuit state under the action of the second push rod 9, when a worker verifies that the switch 3 is in the open circuit state, the valve core 7 is in a first flow passage state, and when the armature 1 is adsorbed to the permanent magnet 15, the switch 3 is in a closed circuit state and outputs a high level. When the worker checks, it is determined that the valve element 7 is in the second flow path state. The effect of impurities and contaminants can be isolated by the provision of the elastic membrane 4.
Further, as a preferred embodiment, an electromechanical structure that senses the push rod pressure, such as a pressure sensitive resistor or a strain gauge, may be used instead of the switch 3. A sealing ring groove is formed in the side face of the sealing ring 2 and used for placing a sealing ring; one end of the sealing ring is provided with a second through hole, so that the second push rod 9 can freely penetrate through the sealing ring 2; the other end is provided with a mounting groove for placing the switch 3. The sealing ring 2 is placed inside the sleeve 8 and forms a radial seal by means of a sealing ring. The sealing ring 2 is placed inside the sleeve 8 and forms a radial seal by means of a sealing ring. The small diameter section of the switch 3 is provided with a sealing ring, and a radial seal is formed in the mounting groove inserted into the sealing ring 2. Under the action of external force, the built-in push rod of the switch 3 displaces, the built-in push rod drives the metal elastic sheet to move, and the internal circuit enters a broken circuit state; after the external force is removed, the built-in push rod is reset under the action of the built-in spring, and the internal circuit enters a communicated state.
Further, as a preferred embodiment, the driving assembly includes a coil 12, an inner iron core 13 and an outer iron core 11, the outer iron core 11 is disposed outside the inner iron core 13, and the coil 12 is disposed between the inner iron core 13 and the outer iron core 11. The outer side of the sleeve 8 is provided with a shell 14 for wrapping the driving component and the switch 3, the switch 3 and the driving component are both arranged in the shell 14, and one side of the shell 14 is provided with a socket connected with the controller. Sealing rings are respectively arranged between the shell 14 and the sleeve 8 and between the shell and the valve sleeve 5.
Further, as a preferred implementation mode, in the scheme, linear proportional control on displacement of the valve element 7 can be realized and the stroke of the valve element 7 is increased by arranging the driving assembly. The housing 14 is provided with a switch 3 housing cavity for axially constraining the switch 3. The housing 14 and the valve housing 5 are fixedly connected to hold the whole components together. By arranging the sealing ring at the joint, the sealing performance can be better.
Further, as a preferred embodiment, in which the inner core 13 is provided with a V-shaped notch, it is possible to achieve linear proportional control of the displacement of the valve element 7 and increase the stroke of the valve element 7. The inner core 13 and the outer core 11 enclose the coil 12 therein, forming a complete magnetic circuit. The shell 14 is made of plastic and used for fixing the inner iron core 13 and the outer iron core 11, and is provided with a plug which can be externally connected with a controller. The housing 14 is provided with a switch 3 housing cavity for axially constraining the switch 3. The housing 14 and the valve housing 5 are fixedly connected to hold the whole components together. Wherein two pins are required for the coil 12 and two pins are required for the switch 3. The proportional electromagnet is modified to be a large-stroke switch 3 electromagnet in consideration of hysteresis effect, and needs to be energized with forward and reverse currents, so that a pin does not need to distinguish polarities.
Further, as a preferred embodiment, a method for using a reversing valve with self-locking function and position feedback comprises the following steps:
s1, when a signal input from a socket of the controller is low level, the armature 1 is not subjected to electromagnetic force or is subjected to small stress, cannot overcome the pre-tightening force of the reset spring 6 and is kept still. The built-in push rod of the switch 3 is separated from the inner metal elastic sheet under the action of the second push rod 9, the switch 3 is in a broken circuit state, and the switch 3 outputs a low level signal to indicate that the valve core 7 is in a state in the first flowing direction.
And S2, when the signal input from the socket of the controller is in a positive high level, the armature 1 is subjected to a large electromagnetic force, and the direction of the electromagnetic force is directed to the permanent magnet 15. In addition, the adjacent end faces of the permanent magnet 15 and the armature 1 are in a different magnetic pole state, and the armature 1 is also under the action of the magnetic field of the permanent magnet 15, and the direction of the magnetic field points to the permanent magnet 15. When the armature 1 is far from the permanent magnet 15, the electromagnetic force is much larger than the magnetic force of the permanent magnet 15, and when the armature 1 is near to the permanent magnet 15, the electromagnetic force is much smaller than the magnetic force of the permanent magnet 15. Therefore, the armature 1 will first move in the direction of the permanent magnet 15 against the resistance of the return spring 6 under the action of the electromagnetic force. When the armature 1 comes into the field range of the permanent magnet 15, it will approach quickly. However, due to the presence of the first tappet 10, a gap remains between the armature 1 and the permanent magnet 15. The valve element 7 moves in accordance with the movement of the armature 1, and is switched to the second flow-through state. Since the magnetic force of the permanent magnet 15 on the armature 1 is independent of the current, the input signal can be switched to a low level state, i.e. a locking function is realized. Along with the movement of the armature 1, the second push rod 9 does not apply acting force to the built-in push rod of the switch 3 any more, and the metal elastic sheet is reset. The internal circuit is in a connected state, and the switch 3 outputs a high level signal indicating that the spool 7 is in the second flow direction.
And S3, when the valve core 7 is in a second circulation state and a signal input by the controller from the plug socket is in a reverse high level, the electromagnetic force borne by the armature 1 points to the permanent magnet 15. The adjacent end faces of the permanent magnet 15 and the armature 1 are in the same magnetic pole state, and the magnetic force applied to the armature 1 by the permanent magnet 15 drives the armature 1 to be far away from the permanent magnet 15. The magnetic force of the return spring 6 and the permanent magnet 15 together overcome the electromagnetic force, driving the armature 1 away from the permanent magnet 15. When the armature 1 is separated from the magnetic field of the permanent magnet 15, the input signal is switched to a low level signal or is cut off, the armature 1 is completely reset under the action of the reset spring 6, the valve core 7 is switched to a first flow direction state, the switch 3 is in a cut-off state under the action of the second push rod 9, and a low level signal is output.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.

Claims (10)

1. The reversing valve with the self-locking function and the position feedback is characterized by comprising a valve seat assembly, wherein a reset spring (6), a valve core (7) and an armature assembly are sequentially arranged in an inner cavity of the valve seat assembly from left to right, two ends of the reset spring (6) are respectively connected with the inner wall of the left side of the inner cavity of the valve seat assembly and the right side of the valve core (7), the valve core (7) and the armature assembly are slidably connected with the inner cavity of the valve seat assembly, a driving assembly used for providing electromagnetic force for the armature assembly is arranged on the valve seat assembly, the driving assembly is externally connected with a controller, a permanent magnet (15) capable of adsorbing the armature assembly is arranged on the left side of the armature assembly, the armature assembly can push the valve core (7) to move so that the valve core (7) can switch a flow channel, the driving assembly is used for driving the armature assembly to be close to the permanent magnet (15) or adsorbed on the permanent magnet (15), and a position feedback device used for detecting the flow channel state of the valve core (7) is arranged on the right side of the valve seat assembly.
2. The reversing valve with the self-locking function and the position feedback as claimed in claim 1, wherein: the armature component comprises an armature (1) and a first push rod (10), the left side of the armature (1) is provided with the first push rod (10) which is used for pushing the non-magnetic conduction of the valve core (7) when the armature (1) is adsorbed by the permanent magnet (15), and the permanent magnet (15) is provided with a first through hole which is larger than the diameter of the first push rod (10) and smaller than the diameter of the armature (1) and is used for the first push rod (10) to penetrate through.
3. The reversing valve with the self-locking function and the position feedback as claimed in claim 2, characterized in that: the valve seat assembly comprises a valve sleeve (5) and a sleeve (8), the sleeve (8) is arranged on the right side of the valve sleeve (5), and the sleeve (8) is connected with the valve sleeve (5).
4. The reversing valve with the self-locking function and the position feedback as claimed in claim 3, wherein: the position feedback device comprises a switch (3), the switch (3) is arranged on the right side of the armature (1), the armature assembly further comprises a second push rod (9), the second push rod (9) is arranged on the right side of the armature (1), and the second push rod (9) is movably connected with the switch (3) and used for controlling the switch (3) to be opened or closed.
5. The reversing valve with self-locking function and position feedback as claimed in claim 4, characterized in that: and a sealing ring (2) is arranged between the second push rod (9) and the switch (3), a second through hole is formed in the sealing ring (2), and the second push rod (9) penetrates through the second through hole.
6. The reversing valve with self-locking function and position feedback as claimed in claim 5, characterized in that: an installation groove is formed in the right side of the sealing ring (2), the switch (3) is partially inserted into the installation groove, and the second through hole is communicated with the installation groove.
7. The reversing valve with the self-locking function and the position feedback as claimed in claim 6, wherein: a third through hole is formed in the right side of the sleeve (8), and the switch (3) partially penetrates through the third through hole to be connected with the mounting groove.
8. The reversing valve with self-locking function and position feedback according to claim 7, characterized in that: drive assembly includes coil (12), interior iron core (13) and outer iron core (11), the outside of interior iron core (13) is equipped with outer iron core (11), interior iron core (13) with be equipped with between outer iron core (11) coil (12).
9. The reversing valve with self-locking function and position feedback according to claim 8, characterized in that: the outer side of the sleeve (8) is provided with a shell (14) used for wrapping the driving component and the switch (3), the switch (3) and the driving component are arranged in the shell (14), and one side of the shell (14) is provided with a socket connected with the controller.
10. A method of using a directional valve with self-locking and position feedback as claimed in any one of claims 1 to 9, comprising:
s1, inputting a low level signal from a socket through a controller, keeping the position of an armature (1) still, enabling a second push rod (9) to abut against a switch (3), keeping the position of a valve core (7) still, and enabling the valve core (7) to be in a first flow state;
s2, when a flow channel needs to be switched, a controller changes a plug interface input signal into a positive high level, the armature (1) moves towards the permanent magnet (15) and is adsorbed by the permanent magnet (15), the valve core (7) moves along with the armature (1) under the action of the first push rod (10) of the armature (1), and the valve core (7) is switched to a second circulation state;
s3, when the valve core (7) needs to be changed into a first flow passage state, the input signal of the controller from the plug socket is changed into a reverse high level, the armature (1) moves away from the permanent magnet (15), the valve core (7) resets according to the elastic force of the reset spring (6), the second push rod (9) abuts against the switch (3) again, and the valve core (7) is switched into a first flow state.
CN202210882601.4A 2022-07-26 2022-07-26 Reversing valve with self-locking function and position feedback and using method thereof Pending CN115264121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210882601.4A CN115264121A (en) 2022-07-26 2022-07-26 Reversing valve with self-locking function and position feedback and using method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210882601.4A CN115264121A (en) 2022-07-26 2022-07-26 Reversing valve with self-locking function and position feedback and using method thereof

Publications (1)

Publication Number Publication Date
CN115264121A true CN115264121A (en) 2022-11-01

Family

ID=83770014

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210882601.4A Pending CN115264121A (en) 2022-07-26 2022-07-26 Reversing valve with self-locking function and position feedback and using method thereof

Country Status (1)

Country Link
CN (1) CN115264121A (en)

Similar Documents

Publication Publication Date Title
US5249603A (en) Proportional electro-hydraulic pressure control device
US8540208B2 (en) Bistable valve
EP2359376B1 (en) Multistable electromagnetic actuators
JP7191297B2 (en) servo valve
US5718264A (en) High speed 3-way control valve
US4513780A (en) Solenoid valve
US4559971A (en) Single coil vacuum/vent valve
US11073220B2 (en) Electromagnetic valve device and system
US5711347A (en) Double solenoid latching ball valve with a hollow ball
MXPA95005076A (en) Two-position three-way solenoid valve.
JPWO2009028534A1 (en) Control valve
CN218000494U (en) Reversing valve with self-locking function and position feedback
CN115264121A (en) Reversing valve with self-locking function and position feedback and using method thereof
JP5462753B2 (en) Electric / hydraulic linear servo valve
CN107725517B (en) Proportional flow solenoid valve
US5836230A (en) High speed 2-way control valve
JP2010019319A (en) Electromagnetic spool valve device
US11098824B2 (en) Fluidic valve device
US2918042A (en) Solenoid controlled fluid actuated holding device
JP2006348982A (en) Three-way solenoid valve
CN205789709U (en) A kind of magnetic fluid travel switch
CN219221420U (en) Switch solenoid valve
JPS5940615Y2 (en) Pilot operated solenoid valve
CN220646947U (en) Bistable switch valve
US7621724B2 (en) Stator for solenoid pumps

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication