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CN113404891B - Solenoid valve convenient to change elastic component - Google Patents

Solenoid valve convenient to change elastic component Download PDF

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Publication number
CN113404891B
CN113404891B CN202110705548.6A CN202110705548A CN113404891B CN 113404891 B CN113404891 B CN 113404891B CN 202110705548 A CN202110705548 A CN 202110705548A CN 113404891 B CN113404891 B CN 113404891B
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CN
China
Prior art keywords
valve
cavity
valve core
connecting rod
hole
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Application number
CN202110705548.6A
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Chinese (zh)
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CN113404891A (en
Inventor
毛信强
李刚
石尧峰
汪济舟
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Jiaxing Mike Pneumatic Equipment Co ltd
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Jiaxing Mike Pneumatic Equipment Co ltd
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Priority to CN202110705548.6A priority Critical patent/CN113404891B/en
Publication of CN113404891A publication Critical patent/CN113404891A/en
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    • 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
    • F16K11/048—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 valve seats positioned between movable valve members
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre 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
    • F16K31/0634—Lift valves with fixed seats positioned between movable valve members
    • 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
    • F16K49/00—Means in or on valves for heating or cooling
    • F16K49/005—Circulation means for a separate heat transfer fluid
    • F16K49/007—Circulation means for a separate heat transfer fluid located within the obturating element

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The invention relates to the field of direct-acting electromagnetic valves, in particular to an electromagnetic valve convenient for replacing an elastic piece, which comprises a valve body and a valve core assembly, wherein an air inlet, a working hole and an air outlet are sequentially formed in the valve body from top to bottom, a cavity used for communicating the air inlet, the working hole and the air outlet is formed in the valve body, the cavity comprises a first cavity communicated with the air inlet, a second cavity communicated with the working hole and a third cavity communicated with the air outlet, the valve core assembly comprises a first valve core arranged in a mounting groove and a second valve core arranged at the bottom of the first valve core, the electromagnetic valve further comprises an elastic mechanism which enables the first valve core to always have a moving trend towards the communicating position of the second cavity of the first cavity, the elastic mechanism comprises a connecting rod detachably connected with the top of the valve body, a telescopic rod is arranged at the bottom end of the connecting rod and is in sliding fit with the connecting rod, a spring is further arranged in the telescopic rod, and the electromagnetic valve further comprises an electromagnetic assembly and a power supply.

Description

Solenoid valve convenient to change elastic component
Technical Field
The invention relates to the field of direct-acting electromagnetic valves, in particular to an electromagnetic valve with an elastic piece convenient to replace.
Background
The electromagnetic valve is an electromagnetic control industrial device, is an automatic basic element for controlling fluid, belongs to an actuator, is powered on by the electromagnetic valve, and utilizes electromagnetic force to enable a valve rod to pull a valve core to move upwards, so that a valve port is opened, and the valve core is pushed to move downwards by the action of the elasticity of a spring to close the valve port to control the on-off of the valve.
However, the use of solenoid valve can be frequent compression spring, and after a period of time, the elasticity coefficient of spring can reduce, need change the spring, need dismantle whole valve body when current solenoid valve changes the spring to cut off the connecting channel of valve body both sides, prevent that the medium from flowing out, make the change of spring more troublesome.
Disclosure of Invention
For solving above-mentioned technical problem, provide a solenoid valve convenient to change elastic component, this application makes the user need not to unpack the solenoid valve when the solenoid valve reduces the solenoid valve switching-over frequency that leads to because of spring elastic coefficient through convenient to detach's elastic component, need not to change the elastic component under the circumstances of the passageway shutoff with the valve body intercommunication, has reduced replacement cost.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the application provides a solenoid valve which is convenient for replacing an elastic piece, comprising a valve body and a valve core assembly,
the valve body is internally provided with a cavity used for communicating the air inlet, the working hole and the air outlet, the cavity comprises a first cavity communicated with the air inlet, a second cavity communicated with the working hole and a third cavity communicated with the air outlet, and a mounting groove which is positioned above the cavity and used for mounting the valve core assembly is also arranged in the valve body;
the valve core assembly comprises a first valve core arranged in the mounting groove and a second valve core arranged at the bottom of the first valve core, the first valve core is in sliding fit with the mounting groove, and the second valve core is fixedly connected to the bottom end of the first valve core;
the electromagnetic valve further comprises an elastic mechanism which enables the first valve core to always have a moving trend towards the communication position of the second cavity of the first cavity, the elastic mechanism comprises a connecting rod which is detachably connected with the top of the valve body, a telescopic rod is arranged at the bottom end of the connecting rod, the telescopic rod is in sliding fit with the connecting rod, a spring is further arranged in the telescopic rod, one end of the spring abuts against the connecting rod, the other end of the spring abuts against the telescopic rod, and when the first valve core contacts with the communication position of the second cavity of the first cavity, the first cavity and the second cavity are blocked;
the electromagnetic valve further comprises an electromagnetic component and a power supply, after the electromagnetic component is communicated with the power supply, the second valve core overcomes the elasticity of the elastic mechanism and has a trend of moving towards the communication position of the third cavity of the second cavity, and when the second valve core contacts with the communication position of the third cavity of the second cavity, the communication position of the third cavity of the second cavity is blocked.
Preferably, the connecting rod is provided with a first thread near the top end, the top end of the valve body is provided with an adjusting interface, the adjusting interface is provided with a first thread through hole in threaded fit with the first thread, and the top surface of the connecting rod is also provided with a cross groove.
Preferably, the adjusting interface is transversely provided with a second threaded through hole communicated with the first threaded through hole, and the electromagnetic valve further comprises a set screw arranged in the second threaded through hole, and the set screw is in threaded connection with the second threaded through hole.
Preferably, the electromagnetic assembly comprises,
the static iron core is fixedly arranged at the top end of the mounting groove;
the coil is arranged on the outer side of the static iron core in a surrounding mode;
the movable iron core is fixedly arranged at the top end of the first valve core.
Preferably, the electromagnetic assembly further comprises a coil interface disposed on the valve body, the coil interface comprising,
the first wiring hole is arranged on the coil interface and is connected with one end of the coil;
the second wiring hole is arranged on the coil interface and is connected with the other end of the coil.
Preferably, the solenoid valve further comprises a sealing assembly, the sealing assembly comprises a first sealing element arranged at a contact position at a communication position of the first valve core and the second cavity of the first cavity, and the first sealing element is fixedly connected with the first valve core.
Preferably, the sealing assembly further comprises a second sealing element arranged at a contact position of the second valve core and the third cavity of the second cavity, and the second sealing element is fixedly connected with the second valve core.
Preferably, the electromagnetic valve further comprises a guide ring arranged on the mounting groove and positioned at the contact position of the mounting groove and the first valve core, the guide ring is fixedly connected with the mounting groove, and the guide ring is in sliding connection with the first valve core.
Preferably, the solenoid valve further comprises a heat dissipation mechanism comprising,
an oil source;
the first oil way interface is arranged on the upper surface of the valve body and is communicated with an oil source;
the second oil way interface is arranged on the upper surface of the valve body;
the heat dissipation oil circuit is arranged in the valve body, the heat dissipation oil circuit is spirally arranged at the outer side of the coil along the axis of the coil, one end of the heat dissipation oil circuit is communicated with the first oil circuit interface, and the other end of the heat dissipation oil circuit is communicated with the second oil circuit interface;
and the input end of the oil temperature cooler is communicated with the second oil way interface, and the output end of the oil temperature cooler is communicated with an oil source.
Preferably, the connecting rod further comprises a pressure reducing pipeline arranged in the connecting rod, one end of the pressure reducing pipeline is communicated with the first air hole arranged at the top end of the connecting rod, and the other end of the pressure reducing pipeline is communicated with the second air hole arranged in the mounting groove of the connecting rod.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the valve core assembly detachably connected with the valve body, the spring elastic coefficient of the electromagnetic valve is reduced due to long-term compression of the spring, when the reversing frequency of the electromagnetic valve is reduced and the reversing speed is reduced, only the valve core assembly is detached from the valve body, and a new valve core assembly is installed, so that the electromagnetic valve does not need to be detached, and the reversing frequency and the reversing speed of the electromagnetic valve are restored to set values under the condition that pipelines communicated with the air inlet hole, the working hole and the air outlet hole are not required to be blocked;
2. according to the invention, through the matching of the first thread and the first thread through hole, a user can use the cross screwdriver to insert into the cross groove to rotate the distance between the first thread adjusting connecting rod and the telescopic rod, so that the initial deformation amount of the spring is changed, the elasticity of the elastic mechanism to the first valve core is adjusted, the reversing frequency and speed of the electromagnetic valve can be recovered without changing the elastic mechanism when the elastic coefficient of the spring is reduced slightly, the service life of the elastic mechanism is prolonged, and the replacement cost caused by the reduction of the elastic coefficient of the spring is reduced again;
3. according to the invention, through the cooperation of the set screw and the second threaded through hole, the electromagnetic valve fixes the connecting rod to prevent the connecting rod from rotating when working, and when a user needs to rotate the connecting rod to change the initial deformation amount of the spring or detach the elastic mechanism from the adjusting interface, the fixing of the connecting rod is released to enable the connecting rod to recover rotation;
4. according to the invention, through the cooperation of the static iron core, the coil and the movable iron core, the second valve core has a tendency of moving towards the communication position of the third cavity of the second cavity when the coil is electrified;
5. according to the invention, a user can conveniently communicate the municipal power supply with the electromagnetic assembly through the coil interface;
6. according to the invention, the impact of the first valve core when being contacted with the communication position of the second cavity of the first cavity is reduced through the first sealing element, the abrasion of the first valve core and the valve body is reduced, the service life of the valve body is prolonged, and the communication position of the first valve core and the second cavity of the first cavity is blocked by the first valve core more completely when being contacted, so that the tightness of the valve body is improved;
7. according to the invention, the impact of the second valve core in contact with the communication part of the third cavity of the second cavity is reduced through the second sealing element, the abrasion of the first valve core and the cavity is reduced, the service life of Zeng Jiaqi is prolonged, and the sealing property of the second valve core is more completely improved when the communication part of the second valve core and the third cavity of the second cavity is contacted;
8. according to the invention, the guide ring prevents the first valve core from directly rubbing the mounting groove when sliding in the mounting groove, so that the abrasion of the electromagnetic valve to the first valve core and the mounting groove in daily use is reduced, and the practical service life of the electromagnetic valve is prolonged;
9. according to the invention, the heat generated by the coil when the electromagnetic valve works is effectively dissipated through the heat dissipation mechanism, so that the adverse effect on the electromagnetic valve caused by heat accumulation generated by the coil is reduced;
10. according to the invention, the cavity between the movable iron core and the static iron core is communicated with the outside of the electromagnetic valve through the pressure reducing pipeline, the first air hole and the second air hole which are arranged on the connecting rod, so that the problem that the air pressure in the cavity increases to influence the movement trend of the second valve core to the communicating position of the third cavity of the second cavity when the first valve core drives the movable iron core to move towards the static iron core is avoided, and the communicating position of the third cavity of the second cavity cannot be completely blocked by the second valve core.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a perspective view of the first embodiment of the present invention;
FIG. 3 is a second perspective view of the present invention;
FIG. 4 is a side view of the present invention;
FIG. 5 is a cross-sectional view at section A-A of FIG. 4;
FIG. 6 is a top view of the present invention;
FIG. 7 is a cross-sectional view at section B-B of FIG. 6;
FIG. 8 is a perspective view of the spring mechanism of the present invention;
FIG. 9 is a top view of the spring mechanism of the present invention;
FIG. 10 is a cross-sectional view at section C-C of FIG. 9;
the reference numerals in the figures are:
1-a valve body; 1 A-An air inlet hole; 1 b-working hole; 1 c-an exhaust hole; 1 d-adjusting the interface; 1d 1-a first threaded through hole; 1d 2-a second threaded through hole;
2-cavity; 2 A-A first cavity; 2 b-a second chamber; 2 c-a third chamber;
3-an electromagnetic assembly; 3 a-static iron core; 3 b-coil; 3 c-a movable iron core; 3 d-coil interface; 3d 1-a first wiring hole; 3d 2-second wiring holes;
4-a valve core assembly; 4 A-A first valve spool; 4 b-a second valve spool;
5-an elastic mechanism; 5 A-A connecting rod; 5a 1-a first thread; 5a 2-cross grooves; 5a 3-a pressure reducing line; 5a 4-a first air hole; 5a 5-second air holes; 5 b-a spring; 5 c-a telescopic rod;
6-a set screw;
7-a seal assembly; 7 A-A first seal; 7 b-a second seal;
8-a guide ring;
9-a heat dissipation mechanism; 9 A-A first oil path interface; 9 b-a second oil path interface; 9 c-heat dissipation oil path.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
In order to solve the technical problem of the decrease of the reversing frequency of the electromagnetic valve caused by the decrease of the elastic coefficient of the spring 5b of the electromagnetic valve after long-term use, as shown in fig. 1-10, the following technical scheme is provided:
an electromagnetic valve for facilitating replacement of an elastic member includes a valve body 10 and a valve core assembly 40,
the valve body 10 is provided with an air inlet hole 1a, a working hole 1b and an air outlet hole 1c in sequence from top to bottom, a cavity 20 used for communicating the air inlet hole 1a, the working hole 1b and the air outlet hole 1c is arranged in the valve body 10, the cavity 20 comprises a first cavity 2a communicated with the air inlet hole 1a, a second cavity 2b communicated with the working hole 1b and a third cavity 2c communicated with the air outlet hole 1c, and a mounting groove which is positioned above the cavity 20 and used for mounting the valve core assembly 40 is also arranged in the valve body 10;
the valve core assembly 40 comprises a first valve core 4a arranged in the mounting groove and a second valve core 4b arranged at the bottom of the first valve core 4a, the first valve core 4a is in sliding fit with the mounting groove, and the second valve core 4b is fixedly connected to the bottom end of the first valve core 4 a;
the electromagnetic valve further comprises an elastic mechanism 50 which enables the first valve core 4a to always have a moving trend towards the communication position of the second cavity 2b of the first cavity 2a, the elastic mechanism 50 comprises a connecting rod 5a0 detachably connected with the top of the valve body 10, a telescopic rod 5c is arranged at the bottom end of the connecting rod 5a0, the telescopic rod 5c is in sliding fit with the connecting rod, a spring 5b is further arranged in the telescopic rod 5c, one end of the spring 5b abuts against the connecting rod, the other end abuts against the telescopic rod 5c, and when the communication position of the first valve core 4a and the second cavity 2b of the first cavity 2a contacts, the first cavity 2a and the second cavity 2b are blocked;
the solenoid valve further includes a solenoid assembly 30 and a power source (not shown), wherein the solenoid assembly 30 overcomes the elastic force of the elastic mechanism 50 and has a tendency to move toward the communication position of the third chamber 2c of the second chamber 2b after being communicated with the power source, and when the second valve element 4b contacts the communication position of the third chamber 2c of the second chamber 2b, the communication position of the third chamber 2c of the second chamber 2b is blocked.
Specifically, when the power supply is not communicated with the electromagnetic assembly 30, the electromagnetic assembly 30 does not enable the valve core assembly 40 to have a trend of moving towards the communication position of the third cavity 2c of the second cavity 2b, the elastic mechanism 50 enables the first valve core 4a to always have a trend of moving towards the communication position of the second cavity 2b of the first cavity 2a, when the communication position of the first valve core 4a and the second cavity 2b of the first cavity 2a is contacted, the communication position of the second cavity 2b of the first cavity 2a is blocked, the working hole 1b is not communicated with the air inlet hole 1a, and the air inlet hole 1a is communicated with the working hole 1 b. When the power supply is communicated with the electromagnetic assembly 30, the electromagnetic assembly 30 generates electromagnetic suction force to the valve core assembly 40, the electromagnetic suction force is larger than elastic thrust of the elastic mechanism 50 to the valve core assembly 40, the electromagnetic assembly 30 enables the valve core assembly 40 to have a trend of moving towards the communication position of the third cavity 2c of the second cavity 2b, when the communication position of the second valve core 4b and the third cavity 2c of the second cavity 2b contacts, the communication position of the third cavity 2c of the second cavity 2b is blocked, the working hole 1b is not communicated with the exhaust hole 1c, and the working hole 1b is communicated with the air inlet hole 1 a. The switching of the solenoid valve is achieved by switching between the on and off states of the power supply and solenoid assembly 30. After the electromagnetic valve is used for a long time, the elasticity of the spring 5b to the first valve core 4a is reduced due to the fact that the elasticity coefficient of the spring 5b is reduced after the electromagnetic valve is used for a long time, the time for reaching the communication position of the first valve core 4a to the second cavity 2b of the first cavity 2a is prolonged due to the fact that the elasticity is reduced, the frequency and the speed for switching the electromagnetic valve from the communication position of the working hole 1b of the air inlet hole 1a to the communication position of the air outlet hole 1c of the working hole 1b are reduced, the elastic mechanism 50 is detachably connected with the valve body 10, the whole elastic mechanism 50 can be detached from the valve body 10, and a new elastic mechanism 50 is installed in the valve body 10 to restore the reversing frequency of the electromagnetic valve.
Further:
in order to solve the technical problem of how to realize the detachable connection of the connecting rod 5a0 and the valve body 10, as shown in fig. 8-10, the following technical scheme is provided:
the connecting rod 5a0 is provided with a first thread 5a1 near the top end, the top end of the valve body 10 is provided with an adjusting interface 1d0, the adjusting interface 1d0 is provided with a first thread through hole 1d1 in threaded fit with the first thread 5a1, and the top surface of the connecting rod 5a0 is also provided with a cross groove 5a2.
Specifically, the adjusting interface 1d0 is used for connecting the valve body 10 with the connecting rod 5a0, the connecting rod 5a0 is vertically inserted into the adjusting interface 1d0, and the connecting rod 5a0 is in threaded connection with the valve body 10 under the cooperation of the first thread 5a1 and the first threaded through hole 1d 1. After the solenoid valve is used for a long time, after the reversing speed of the solenoid valve is reduced due to the fact that the spring 5b is reduced due to the fact that the coefficient of elasticity of the solenoid valve is reduced after the solenoid valve is compressed for a long time, a cross screwdriver can be used for being inserted into the cross groove 5a2, the cross screwdriver is rotated to drive the connecting rod 5a0 to rotate, the distance between the connecting rod 5a0 and the telescopic rod 5c is shortened to compress the spring 5b, after the initial deformation x of the spring 5b is increased according to Hooke's law F= -k.x, the elasticity F of the spring is increased, the reversing frequency of the solenoid valve is recovered to a set value, and the reversing speed of the solenoid valve is increased. When the initial deformation x of the spring 5b cannot be increased, the cross screw driver can be used for inserting the cross groove 5a2 to detach the elastic mechanism 50 from the electromagnetic valve, and a new elastic mechanism 50 is installed into the electromagnetic valve through the adjusting interface 1d0 to restore the reversing frequency of the electromagnetic valve to be normal. The cross groove 5a2 is connected to the outside of the electromagnetic valve through the cross screwdriver, the distance between the first thread 5a1 and the telescopic rod 5c is shortened, the initial deformation quantity of the spring 5b is increased by the compression spring, the elastic force of the restoring spring is increased, the valve changing speed of the electromagnetic valve is restored, the frequency of replacing the elastic mechanism 50 by the electromagnetic valve is reduced, and the cost is saved.
Further:
in order to solve the technical problem that the connecting rod 5a0 which is in threaded connection with the valve body 10 may slide up and down in the use process of the electromagnetic valve, as shown by the set screws 6 to 7, the following technical scheme is provided:
the adjusting interface 1d0 is transversely provided with a second threaded through hole 1d2 communicated with the first threaded through hole 1d1, and the electromagnetic valve further comprises a set screw 6 arranged in the second threaded through hole 1d2, and the set screw 6 is in threaded connection with the second threaded through hole 1d 2.
Specifically, when the connecting rod 5a0 needs to be fixed on the valve body 10, the set screw 6 can be inserted into the second threaded through hole 1d2 until the output end of the set screw 6 abuts against the connecting rod 5a0 to prevent the connecting rod 5a0 from rotating, and when the elastic mechanism 50 needs to be detached from the valve body 10 or when the distance between the connecting rod 5a0 and the telescopic rod 5c needs to be adjusted to change the initial deformation amount of the spring 5b, the set screw 6 can be moved out of the second threaded through hole 1d2 to enable the connecting rod 5a0 to rotate.
Further:
in order to solve the technical problem of how to realize that the second valve core 4b has a moving trend towards the communication position of the third cavity 2c of the second cavity 2b after the electromagnetic assembly 30 is electrified, as shown by the set screws 6 to 7, the following technical scheme is provided:
the electromagnetic assembly 30 includes a plurality of electromagnetic assemblies,
a static iron core 3a, wherein the static iron core 3a is fixedly arranged at the top end of the mounting groove;
a coil 3b, the coil 3b being circumferentially disposed outside the stationary core 3 a;
and a movable iron core 3c, wherein the movable iron core 3c is fixedly arranged at the top end of the first valve core 4 a.
Specifically, after the coil 3b is communicated with the power supply, the static iron core 3a is made to have magnetism, then the movable iron core 3c is attracted to move towards the static iron core 3a, the static iron core 3a drives the first valve core 4a fixedly connected with the static iron core 3a to move towards the static iron core 3a, and the first valve core 4a drives the second valve core 4b fixedly connected with the first valve core to move towards the communicating position of the third cavity 2c of the second cavity 2 b. When the coil 3b is not connected to the power supply, the magnetic force of the stationary core 3a is resolved, and the movable core 3c is no longer attracted to move toward the stationary core 3a, so that the second spool 4b does not have a tendency to move toward the communication of the second chamber 2b and the third chamber 2 c. Thereby, it is realized that by disconnecting or connecting the solenoid assembly 30 to the power supply, it is decided whether the second spool 4b has a tendency to move toward the connection of the second chamber 2b and the third chamber 2 c.
Further:
in order to solve the technical problem of how the coil 3b is connected to the power supply, as shown in fig. 1-2 and fig. 4, the following technical scheme is provided:
the solenoid assembly 30 further includes a coil interface 3d0 provided on the valve body 10, the coil interface 3d0 including,
the first wiring hole 3d1 is arranged on the coil interface 3d0, and the first wiring hole 3d1 is connected with one end of the coil 3 b;
the second wiring hole 3d2 is provided on the coil interface 3d0, and the second wiring hole 3d2 is connected to the other end of the coil 3 b.
Specifically, the power supply is municipal 220V alternating current, the first wiring hole 3d1 is used for being connected with a live wire, and the second wiring hole 3d2 is used for being connected with a zero wire.
Further:
in order to solve the technical problem of how to realize the sealing of the communication part of the first cavity 2a and the second cavity 2b when the communication part of the first valve core 4a contacts with the communication part of the first cavity 2a and the second cavity 2b, as shown by the set screws 6 to 7, the following technical scheme is provided:
the solenoid valve further comprises a sealing assembly 70, wherein the sealing assembly 70 comprises a first sealing piece 7a arranged at a contact position where the first valve core 4a is communicated with the second cavity 2b of the first cavity 2a, and the first sealing piece 7a is fixedly connected with the first valve core 4 a.
Specifically, the first sealing member 7a is an annular rubber ring, the first sealing member 7a is used for reducing the impact force of the communication part of the first valve core 4a and the second cavity 2b of the first cavity 2a when the communication part of the first valve core 4a and the second cavity 2b of the first cavity 2a is contacted, the first valve core 4a is protected from damage when being contacted with the valve body 10, and the sealing property of the communication part of the first valve core 4a and the second cavity 2b of the first cavity 2a is improved by the first sealing member 7a made of rubber, so that when the communication part of the first valve core 4a and the second cavity 2b of the first cavity 2a is contacted, the communication part of the first valve core 4a and the second cavity 2b of the first cavity 2a is blocked.
Further:
in order to solve the technical problem of how to seal the communication position of the second cavity 2b and the third cavity 2c when the second valve core 4b contacts the communication position of the third cavity 2c of the second cavity 2b, as shown in fig. 6-7, the following technical scheme is provided:
the seal assembly 70 further includes a second seal member 7b disposed at a position where the second spool 4b contacts the third chamber 2c of the second chamber 2b, the second seal member 7b being fixedly connected to the second spool 4 b.
Specifically, the second sealing member 7b is an annular rubber ring, the second sealing member 7b is used for reducing the impact force of the communication position of the second valve core 4b and the third cavity 2c of the second cavity 2b when the second valve core 4b is in contact with the communication position of the third cavity 2c of the second cavity 2b, so that the second valve core 4b is protected from damage when in contact with the valve body 10, and the sealing performance of the rubber material second sealing member 7b is improved when the communication position of the second valve core 4b and the third cavity 2c of the second cavity 2b is in contact, so that the second valve core 4b is plugged at the communication position of the third cavity 2c of the second cavity 2b when the communication position of the second valve core 4b and the third cavity 2c of the second cavity 2b are in contact.
Further:
in order to solve the technical problem of reducing wear between the first valve element 4a and the installation groove when the first valve element 4a slides in the installation groove, as shown in fig. 6-7, the following technical scheme is provided:
the electromagnetic valve further comprises a guide ring 8 which is arranged on the mounting groove and is positioned at the contact position of the mounting groove and the first valve core 4a, the guide ring 8 is fixedly connected with the mounting groove, and the guide ring 8 is in sliding connection with the first valve core 4 a.
Specifically, the guide ring 8 is used for avoiding abrasion caused by direct contact friction with the valve body 10 when the first valve core 4a slides in the mounting groove, the guide ring 8 has good abrasion resistance and sealing performance, the sealing performance between the first valve core 4a and the mounting groove is ensured while the first valve core 4a is supported to slide in the mounting groove to reduce abrasion, and the fluid in the first cavity 2a is prevented from flowing into the space between the static iron core 3a and the coil 3b through a gap between the first valve core 4a and the mounting groove.
Further:
in order to solve the technical problem that the coil 3b has high heat generation amount in a long-time energizing state and cannot effectively dissipate heat to cause damage to the electromagnetic valve, as shown in the set screws 6 to 7, the following technical scheme is provided:
the solenoid valve further includes a heat dissipation mechanism 90, the heat dissipation mechanism 90 including,
an oil source (not shown);
the first oil way interface 9a, the first oil way interface 9a is arranged on the upper surface of the valve body 10, and the first oil way interface 9a is communicated with an oil source;
a second oil passage port 9b, the second oil passage port 9b being provided on the upper surface of the valve body 10;
a heat radiation oil path 9c, the heat radiation oil path 9c is arranged in the valve body 10, the heat radiation oil path 9c is spirally arranged outside the coil 3b along the axis of the coil 3b, one end of the heat radiation oil path 9c is communicated with the first oil path interface 9a, and the other end of the heat radiation oil path 9c is communicated with the second oil path interface 9 b;
an oil temperature cooler (not shown) has an input end communicating with the second oil passage port 9b and an output end communicating with an oil source.
Specifically, when the electromagnetic valve works, the oil source is input into the heat dissipation oil path 9c through the first oil path interface 9a, heat generated by the coil 3b is absorbed when oil passes through the heat dissipation oil path 9c, the oil flows out of the electromagnetic valve from the second oil path interface 9b after passing through the heat dissipation oil path 9c, and flows back to the oil source after being radiated through the oil temperature cooler, so that the electromagnetic valve is circularly radiated, and the influence of the heat generated by the coil 3b on the electromagnetic valve is reduced.
Further:
in order to solve the technical problem that a chamber for sliding the first valve core 4a is reserved in the mounting groove and is not communicated with the outside, when the first valve core 4a moves towards the static iron core 3a under the drive of the movable iron core 3c, the chamber is compressed, the air pressure is increased, the trend of the first valve core 4a moving towards the static iron core 3a is prevented, the blocking of the communicating part of the third cavity 2c of the second cavity 2b is influenced, and as shown in fig. 9-10, the following technical scheme is provided:
the connecting rod 5a0 further comprises a pressure reducing pipeline 5a3 arranged in the connecting rod 5a0, one end of the pressure reducing pipeline 5a3 is communicated with a first air hole 5a4 arranged at the top end of the connecting rod 5a0, and the other end of the pressure reducing pipeline 5a3 is communicated with a second air hole 5a5 arranged in the connecting rod 5a0 and located in the mounting groove.
Specifically, the electromagnetic valve communicates the chamber with the outside of the electromagnetic valve through the first air hole 5a4, the pressure reducing pipeline 5a3 and the second air hole 5a5 on the connecting rod 5a0, so that the air pressure in the chamber is always kept the same as the outside when the size of the chamber is changed by the first valve core 4a, and the trend that the air pressure in the chamber is increased by the compression chamber to prevent the second valve core 4b from moving to the communicating position of the third chamber 2c of the second chamber 2b is avoided.
According to the electromagnetic valve reversing device, the elastic mechanism 50 is convenient to replace, so that a user can replace the elastic mechanism 50 without disassembling the electromagnetic valve, the reversing frequency and the reversing speed of the electromagnetic valve are recovered, the service life of the electromagnetic valve is prolonged, and the replacement cost of the electromagnetic valve is reduced. The user can insert the cross groove 5a2 through the cooperation between the connecting rod 5a0 and the adjusting interface 1d0 to rotate the connecting rod 5a0 to adjust the initial deformation amount of the spring 5b through the cross screw driver, and the elastic force of the elastic mechanism 50 to the first valve core 4a is adjusted, so that the reversing speed and frequency of the electromagnetic valve can be recovered without changing the elastic mechanism 50 under the condition that the elastic coefficient is not reduced much. The impact abrasion of the valve core assembly 40 when contacting the valve body 10 is reduced through the first sealing piece 7a arranged on the first valve core 4a and the second sealing piece 7b arranged on the second valve core 4b, the sealing performance of the valve core assembly 40 on the communication part of the second cavity 2b of the first cavity 2a and the communication part of the third cavity 2c of the second cavity 2b is improved, the abrasion between the valve core assembly 40 and the valve body 10 is reduced through the guide ring 8, the elastic mechanism 50 is fixedly connected when the electromagnetic valve works through the cooperation of the set screw 6 and the second threaded through hole 1d2, the heating problem of the coil 3b is solved through the heat dissipation mechanism 90 when the elastic force needs to be regulated or the valve core assembly 40 needs to be replaced, and the service life of the electromagnetic valve is prolonged again.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. An electromagnetic valve convenient for replacing an elastic piece comprises a valve body (1) and a valve core assembly (4), and is characterized in that,
the valve body (1) is internally provided with a cavity (2) used for communicating the air inlet hole (1 a), the working hole (1 b) and the air outlet hole (1 c), the cavity (2) comprises a first cavity (2 a) communicated with the air inlet hole (1 a), a second cavity (2 b) communicated with the working hole (1 b) and a third cavity (2 c) communicated with the air outlet hole (1 c), and a mounting groove which is positioned above the cavity (2) and used for mounting the valve core assembly (4) is also formed in the valve body (1);
the valve core assembly (4) comprises a first valve core (4 a) arranged in the mounting groove and a second valve core (4 b) arranged at the bottom of the first valve core (4 a), the first valve core (4 a) is in sliding fit with the mounting groove, and the second valve core (4 b) is fixedly connected to the bottom end of the first valve core (4 a);
the electromagnetic valve further comprises an elastic mechanism (5) which enables the first valve core (4 a) to always have a moving trend towards the communicating position of the second cavity (2 b) of the first cavity (2 a), the elastic mechanism (5) comprises a connecting rod (5 a) which is detachably connected with the top of the valve body (1), a telescopic rod (5 c) is arranged at the bottom end of the connecting rod (5 a), the telescopic rod (5 c) is in sliding fit with the connecting rod, a spring (5 b) is further arranged in the telescopic rod (5 c), one end of the spring (5 b) abuts against the connecting rod, the other end of the spring abuts against the telescopic rod (5 c), and when the communicating position of the first valve core (4 a) and the second cavity (2 b) of the first cavity (2 a) is contacted, the first cavity (2 a) and the second cavity (2 b) are blocked;
the electromagnetic valve further comprises an electromagnetic assembly (3) and a power supply, the electromagnetic assembly (3) overcomes the elasticity of the elastic mechanism (5) and has a trend of moving towards the communication position of the third cavity (2 c) of the second cavity (2 b) after being communicated with the power supply, and when the second valve core (4 b) is contacted with the communication position of the third cavity (2 c) of the second cavity (2 b), the communication position of the third cavity (2 c) of the second cavity (2 b) is blocked;
a first thread (5 a 1) is arranged at the position, close to the top end, of the connecting rod (5 a), an adjusting interface (1 d) is arranged at the top end of the valve body (1), a first thread through hole (1 d 1) in threaded fit with the first thread (5 a 1) is formed in the adjusting interface (1 d), and a cross groove (5 a 2) is formed in the top surface of the connecting rod (5 a);
the electromagnetic valve further comprises a set screw (6) arranged in the second threaded through hole (1 d 2), and the set screw (6) is in threaded connection with the second threaded through hole (1 d 2).
2. A solenoid valve for facilitating the replacement of an elastic member according to claim 1, characterized in that the solenoid assembly (3) comprises,
a static iron core (3 a), wherein the static iron core (3 a) is fixedly arranged at the top end of the mounting groove;
a coil (3 b), wherein the coil (3 b) is arranged on the outer side of the static iron core (3 a) in a surrounding manner;
and the movable iron core (3 c) is fixedly arranged at the top end of the first valve core (4 a).
3. A solenoid valve for facilitating replacement of a spring according to claim 2, wherein the solenoid assembly (3) further comprises a coil interface (3 d) provided on the valve body (1), the coil interface (3 d) comprising,
the first wiring hole (3 d 1) is arranged on the coil interface (3 d), and the first wiring hole (3 d 1) is connected with one end of the coil (3 b);
the second wiring hole (3 d 2) is arranged on the coil interface (3 d), and the second wiring hole (3 d 2) is connected with the other end of the coil (3 b).
4. A solenoid valve according to claim 1 wherein said solenoid valve further comprises a sealing assembly (7), said sealing assembly (7) comprising a first sealing member (7 a) disposed in contact with said first valve element (4 a) at a location where said first valve element (4 a) communicates with said second chamber (2 b) of said first chamber (2 a), said first sealing member (7 a) being fixedly connected to said first valve element (4 a).
5. A solenoid valve according to claim 1 characterised in that the sealing assembly (7) further comprises a second sealing element (7 b) arranged in a position where the second valve element (4 b) is in contact with the third chamber (2 c) of the second chamber (2 b), the second sealing element (7 b) being fixedly connected to the second valve element (4 b).
6. The solenoid valve according to claim 1, characterized in that the solenoid valve further comprises a guide ring (8) arranged on the mounting groove at a position where the mounting groove contacts the first valve element (4 a), the guide ring (8) is fixedly connected with the mounting groove, and the guide ring (8) is slidably connected with the first valve element (4 a).
7. A solenoid valve for facilitating replacement of an elastic member according to claim 1, further comprising a heat radiating mechanism (9), the heat radiating mechanism (9) comprising,
an oil source;
the first oil way interface (9 a) is arranged on the upper surface of the valve body (1), and the first oil way interface (9 a) is communicated with an oil source;
the second oil way interface (9 b) is arranged on the upper surface of the valve body (1);
the heat dissipation oil circuit (9 c) is arranged in the valve body (1), the heat dissipation oil circuit (9 c) is spirally arranged outside the coil (3 b) along the axis of the coil (3 b), one end of the heat dissipation oil circuit (9 c) is communicated with the first oil circuit interface (9 a), and the other end of the heat dissipation oil circuit (9 c) is communicated with the second oil circuit interface (9 b);
and the input end of the oil temperature cooler is communicated with the second oil way interface (9 b), and the output end of the oil temperature cooler is communicated with an oil source.
8. The electromagnetic valve for facilitating replacement of elastic members according to claim 1, wherein the connecting rod (5 a) further comprises a pressure reducing pipe (5 a 3) provided inside the connecting rod (5 a), one end of the pressure reducing pipe (5 a 3) is communicated with a first air hole (5 a 4) provided at a top end of the connecting rod (5 a), and the other end of the pressure reducing pipe (5 a 3) is communicated with a second air hole (5 a 5) provided in a mounting groove of the connecting rod (5 a).
CN202110705548.6A 2021-06-24 2021-06-24 Solenoid valve convenient to change elastic component Active CN113404891B (en)

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