CN113606359B - Electromagnetic integrated reversing valve with reversing protection function - Google Patents
Electromagnetic integrated reversing valve with reversing protection function Download PDFInfo
- Publication number
- CN113606359B CN113606359B CN202110995496.0A CN202110995496A CN113606359B CN 113606359 B CN113606359 B CN 113606359B CN 202110995496 A CN202110995496 A CN 202110995496A CN 113606359 B CN113606359 B CN 113606359B
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- channel
- iron core
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 62
- 238000007789 sealing Methods 0.000 claims description 43
- 230000003068 static effect Effects 0.000 claims description 22
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 230000000694 effects Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008092 positive effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- F16K11/06—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
- F16K11/0704—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 locking elements
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1223—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being acted upon by the circulating fluid
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
- F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
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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
- F16K35/00—Means to prevent accidental or unauthorised actuation
- F16K35/02—Means to prevent accidental or unauthorised actuation to be locked or disconnected by means of a pushing or pulling action
- F16K35/022—Means to prevent accidental or unauthorised actuation to be locked or disconnected by means of a pushing or pulling action the locking mechanism being actuated by a separate actuating element
- F16K35/025—Means to prevent accidental or unauthorised actuation to be locked or disconnected by means of a pushing or pulling action the locking mechanism being actuated by a separate actuating element said actuating element being operated manually (e.g. a push-button located in the valve actuator)
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The application provides an electromagnetic integrated reversing valve with reversing protection, which comprises a push rod assembly, a valve body assembly, a pilot valve body and an electromagnetic coil assembly, wherein the valve body assembly comprises a valve body and a valve rod assembly, the push rod assembly is arranged on the valve body, and a push rod cavity is formed between the valve body and the push rod assembly; the valve body is provided with a valve cavity, and the valve rod assembly is arranged in the valve cavity; the pilot valve body is arranged between the valve body assembly and the electromagnetic coil assembly, a piston cavity is formed in the connection position of the pilot valve body and the valve body cavity, and a piston of the valve rod assembly is arranged in the piston cavity. The electromagnetic integrated reversing valve has reversing protection, higher reliability and can realize various control modes.
Description
Technical Field
The invention relates to the technical field of pneumatic elements, in particular to an electromagnetic integrated reversing valve with high reliability and reversing protection function.
Background
The gas circuit control valve is widely applied to fluid control in various technical fields, has more application occasions and has various gas valves in the current market. Along with the continuous increase of control gas circuits, more and more control valves become multi-gas-channel gas circuits, but when the existing multi-channel control valve switches working ports, the existing multi-channel control valve has no protection or locking function, and when a user operates by mistake or fails, the working gas circuits are switched by mistake or cannot keep a switching state, so that the normal use and the reliability of products are affected.
Therefore, the electromagnetic integrated reversing valve in the prior art also has a lifting place.
Disclosure of Invention
Aiming at the defects, the invention aims to provide the electromagnetic integrated reversing valve which has high reliability, a plurality of air inlet or working interfaces, is convenient for connecting a plurality of air channels and has reversing protection interlocking protection function, so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The electromagnetic integrated reversing valve comprises a push rod assembly, a valve body assembly, a pilot valve body and an electromagnetic coil assembly, wherein the valve body assembly comprises a valve body and a valve rod assembly, the push rod assembly is arranged on the valve body, and a push rod cavity is formed between the valve body and the push rod assembly; the valve body is provided with a valve cavity, and the valve rod assembly is arranged in the valve cavity; the pilot valve body is arranged between the valve body assembly and the electromagnetic coil assembly, a piston cavity is formed in the position where the pilot valve body is connected with the valve body cavity, a piston of the valve rod assembly is arranged in the piston cavity, the pilot valve body and the electromagnetic coil assembly form an iron core cavity, and the iron core cavity close to one side of the pilot valve body is a third valve cavity; the electromagnetic integrated reversing valve further comprises a first channel, a second channel and a third channel, wherein an air inlet of the valve body is connected with a first working port and the ejector rod cavity respectively through an air channel, one end of the first channel is connected with the ejector rod cavity, the other end of the first channel is connected with the valve body cavity, one end of the second channel is connected with the air channel between the air inlet and the first working port, and the other end of the second channel is connected with the third valve cavity; the third passage connects the third valve chamber and the piston chamber.
According to the electromagnetic integrated reversing valve with reversing protection disclosed by the preferred embodiment of the application, the valve rod assembly divides the valve body cavity into a first valve cavity and a second valve cavity; the first valve cavity is connected with a second working port, and the second valve cavity is connected with a third working port; the valve body assembly further comprises a rear cover and a first spring, the rear cover covers an opening connected with the valve body cavity, and two ends of the first spring are respectively connected with the rear cover and the valve rod assembly.
According to the reversing protection electromagnetic integrated reversing valve disclosed by the preferred embodiment of the application, the ejector rod assembly comprises an ejector rod, an ejector rod seat, an ejector rod valve rod, a third spring, a stop pin, a lower stop block, a spacer bush, an ejector rod sealing ring and an upper stop block, wherein the lower stop block, the spacer bush, the ejector rod sealing ring and the upper stop block are sequentially arranged in the ejector rod cavity, and the ejector rod valve rod is inserted into and connected with the lower stop block, the spacer bush, the ejector rod sealing ring and the upper stop block; the ejector rod is arranged on the ejector rod seat, one end of the ejector rod valve rod is connected with the ejector rod, the other end of the ejector rod valve rod is provided with a spring groove, one end of the third spring is connected with the spring groove, and the other end of the third spring is propped against and connected with the step part of the first channel.
According to the electromagnetic integrated reversing valve with reversing protection in the preferred embodiment of the application, the electromagnetic coil assembly further comprises an electromagnetic coil, a cover plate, a static iron core, a guide sleeve, a second spring, a first sealing plug and a second sealing plug, wherein the guide sleeve is arranged in the iron core cavity, and the static iron core is arranged in the guide sleeve in an interference manner; the movable iron core is movably arranged in the guide sleeve; the second sealing plug is arranged at one end of the movable iron core, which faces the static iron core, and the first sealing plug is arranged at the other end of the movable iron core; one end of the movable iron core, which faces the pilot valve body, is provided with a spring arc part, and the second spring is arranged on the spring arc part; the cover plate is arranged on the electromagnetic coil.
According to the reversing protection electromagnetic integrated reversing valve of the preferred embodiment of the application, the electromagnetic integrated reversing valve further comprises a fourth channel, the pilot valve body is provided with a control port, the cover plate is provided with a groove channel, the static iron core is provided with a middle through hole, one opening end of the middle through hole is movably connected with the second sealing plug, and the other opening end of the middle through hole is connected with the groove channel in an air way; the electromagnetic coil is provided with a coil through hole, one end of the coil through hole is connected with the groove channel, and the other end of the coil through hole is connected with a connecting channel which is connected with the control port on the pilot valve body; the fourth channel is a channel which is connected with the third valve cavity, the middle through hole of the static iron core, the groove channel of the cover plate, the coil through hole of the electromagnetic coil and the connecting channel of the pilot valve body, wherein the connecting channel is connected with the control port.
According to the electromagnetic integrated reversing valve with reversing protection in the preferred embodiment of the application, the valve body further comprises a first exhaust port, a second exhaust port and an exhaust channel, and the exhaust channel is connected with the third working port, the piston cavity and the second exhaust port; the first exhaust port is connected with the second working port through an air path.
The application has the core ideas that the electromagnetic integrated reversing valve is manufactured, a plurality of working ports are arranged, the multi-pipeline connection and the use are convenient, a plurality of control modes can be realized, reversing protection is realized after the working ports are switched, the reliability is higher, the reversing failure caused by misoperation can not be caused, the control valve works stably, the valve body structure and the passage design are compact, the waterproof and dustproof effects are good, the environment adaptability is stronger, the working is more stable and reliable, and the service life is longer.
Due to the adoption of the technical characteristics, compared with the prior art, the invention has the following advantages and positive effects:
the electromagnetic integrated reversing valve has reversing protection, is higher in reliability, and can realize various control modes;
Secondly, the valve body structure and the passage design of the application are compact, have good waterproof and dustproof effects, and are convenient for installation;
thirdly, the valve body has stronger adaptive capacity to environment, more stable and reliable operation and longer service life.
Of course, it is not necessary for any one embodiment to practice the teachings of the present invention to have all of the above described advantages.
Drawings
FIG. 1 is a schematic view of the present application;
FIG. 2 is a first cross-sectional schematic view of the present application;
FIG. 3 is a partially enlarged schematic illustration of FIG. 2;
FIG. 4 is an enlarged schematic view of another portion of FIG. 2;
FIG. 5 is an enlarged schematic view of a portion of FIG. 2;
FIG. 6 is a second cross-sectional schematic of the present application;
FIG. 7 is a third cross-sectional schematic view of the present application;
Fig. 8 is a fourth cross-sectional view of the present application.
Detailed Description
Several preferred embodiments of the present invention will be described in detail below with reference to the attached drawings, but the present invention is not limited to these embodiments only. The invention is intended to cover any alternatives, modifications, equivalents, and variations that fall within the spirit and scope of the invention. In the following description of preferred embodiments of the invention, specific details are set forth in order to provide a thorough understanding of the invention, and the invention will be fully understood to those skilled in the art without such details. In other instances, well-known methods, procedures, flows, components, and so forth have not been described in detail so as not to unnecessarily obscure aspects of the present invention.
Referring to fig. 1 and 2, an external schematic view and a first cross-sectional schematic view of the present application are provided for an electromagnetic integrated reversing valve with reversing protection, the electromagnetic integrated reversing valve includes a stem assembly 3, a valve body assembly 5, a pilot valve body 6 and an electromagnetic coil assembly 7, the valve body assembly 5 includes a valve body 51 and a valve rod assembly 12, the stem assembly 3 is disposed on the valve body 51, and a stem cavity 27 is formed between the valve body 51 and the stem assembly 3; in the embodiment of the application, the ejector rod assembly 3 is locked on the valve body assembly 5 by a nut, so that a sealing ring can be added to improve the airtight performance and can prevent water and dust in order to ensure the airtight performance between the ejector rod assembly 3 and the valve body assembly 5.
In addition, referring to fig. 3 and 4, the valve body 51 is provided with a valve cavity, the valve rod assembly 12 is disposed in the valve cavity, the valve rod assembly 12 is provided with a single sealing ring, a plurality of sealing rings and supporting rings to divide the valve body cavity into a first valve cavity 511 and a second valve cavity 512, and the sealing rings ensure tightness and movement flexibility; the pilot valve body 6 is disposed between the valve body assembly 5 and the electromagnetic coil assembly 7, a piston cavity 513 is formed at a connection position between the pilot valve body 6 and the valve body cavity, a piston 11 of the valve rod assembly 12 is disposed in the piston cavity 513, an iron core cavity 514 is formed by the pilot valve body 6 and the electromagnetic coil assembly 7, and the iron core cavity 514 close to one side of the pilot valve body 6 is a third valve cavity 5141.
In addition, the electromagnetic integrated reversing valve in fig. 2 further includes a first channel a, a second channel B and a third channel C, where the air inlet 1 of the valve body 51 is connected to the first working port 2 and the ejector rod cavity 27 respectively through an air path, one end of the first channel a is connected to the ejector rod cavity 27, the other end of the first channel a is connected to the valve body cavity, one end of the second channel B is connected to the air path between the air inlet 1 and the first working port 2, and the other end of the second channel B is connected to the third valve cavity 5141; the third passage C connects the third valve chamber 5141 and the piston chamber 513.
Referring to fig. 3, the first valve cavity 511 is connected to the second working port 22, and the second valve cavity 512 is connected to the third working port 21; the valve body assembly 5 further comprises a rear cover 13 and a first spring 14, wherein the rear cover 13 covers an opening connected with the valve cavity, and two ends of the first spring 14 are respectively connected with the rear cover 13 and the valve rod assembly 12. As shown in the figure, one end of the valve rod assembly 12 abuts against the inner wall of the rear cover 13 through the first spring 14, the rear cover 13 is provided with a sealing ring and is connected with the valve body 51 through a screw, the other end of the valve rod assembly 12 abuts against the bottom surface of the piston 11, the piston 11 is arranged in the piston cavity 513, and is provided with a Y-shaped sealing ring 111 to seal the side wall of the piston cavity 513, so that the third channel C is sealed with the first channel a, the valve rod assembly 12 moves rightward under the action of the first spring 14, the second working port 22 is communicated with the first working port 2 and the air inlet 1, and the third working port 21 is sealed with the first working port 2 and the air inlet 1.
Referring to fig. 5, the ejector rod assembly 3 includes an ejector rod 24, an ejector rod seat 20, an ejector rod valve rod 23, a third spring 15, a stop pin 26, a lower stop block 16, a spacer 17, an ejector rod sealing ring 18 and an upper stop block 19, wherein the lower stop block 16, the spacer 17, the ejector rod sealing ring 18 and the upper stop block 19 are sequentially disposed in the ejector rod cavity 27, and the ejector rod valve rod 23 is inserted into and connected with the lower stop block 16, the spacer 17, the ejector rod sealing ring 18 and the upper stop block 19; the ejector rod 24 is arranged on the ejector rod seat 20, the ejector rod 24 can be stressed and moved on the ejector rod seat 20, one end of the ejector rod valve rod 23 is connected with the ejector rod 24, the ejector rod valve rod 23 can move when being pressed by the ejector rod 24, the other end of the ejector rod valve rod 23 is provided with a spring groove, one end of the third spring 15 is connected with the spring groove, and the other end of the third spring 15 is propped against and connected with the step part of the first channel A. The ejector rod seat 20 is connected with the valve body 51 through screws and is waterproof and dustproof by using a sealing ring. One end of the ejector rod valve rod 23 abuts against the ejector rod 24 under the action of the third spring 15, the other end of the ejector rod 24 protrudes out of the surface of the ejector rod seat 20, and the ejector rod 24 is provided with a sealing ring, so that good sealing performance is ensured. The spacer 17 and the ejector rod valve rod 23 are provided with small holes, when the ejector rod 24 moves downwards to enable the ejector rod valve rod 23 to compress the third spring 15 to move, the spacer 17 is disconnected from the small holes formed in the ejector rod valve rod 23, and the air inlet 1, the first working port 2 and the second working port 22 are disconnected. The valve body 51 is provided with the stop pin 26, the stop pin 26 is tightly matched with the mounting hole on the valve body 51, and in addition, the stop pin 26 is in transition fit with the upper mounting hole of the ejector rod seat 20, so that the mounting precision can be ensured, the structural strength can be improved, and the use under the working condition of high-frequency vibration is more stable and reliable.
Referring to fig. 4, the electromagnetic coil assembly 7 further includes an electromagnetic coil 71, a cover plate 8, a static iron core 9, a movable iron core 10, a guide sleeve 92, a second spring 25, a first sealing plug 102 and a second sealing plug 101, wherein the guide sleeve 92 is disposed in the iron core cavity 514, the static iron core 9 is disposed in the guide sleeve 92 in an interference manner so that the static iron core 9 cannot move, in the embodiment of the present application, the static iron core 9 is not fully inserted into the guide sleeve 92, but a part of the static iron core 9 is in interference connection with a cavity wall of the iron core cavity 514, and a guide sleeve sealing ring 91 is disposed on the static iron core 9 to seal with an inner wall of the guide sleeve 92, but not used to limit the present application; the movable iron core 10 is movably arranged in the guide sleeve 92, and the movable design of the movable iron core 10 enables the movable iron core 10 to move towards the static iron core 9 under the action of electromagnetic force; the second sealing plug 101 is arranged at one end of the movable iron core 10, which faces the static iron core 9; the first sealing plug 102 is disposed at the other end of the movable iron core 10, and plugs are designed at both ends of the movable iron core 10, as shown in fig. 4, when the movable iron core 10 moves leftwards, the first sealing plug 102 can plug the second channel B, and when the movable iron core 10 moves rightwards, the second sealing plug 101 can plug the static iron core 9; the movable iron core 10 is provided with a spring arc part towards one end of the pilot valve body 6, the second spring 25 is arranged at the spring arc part, and the connection mode of the second spring 25 is as follows: one end of the second spring 25 abuts against the upper flat surface of the spring arc part, and the other end of the second spring abuts against the end surface of the guide sleeve 92, so that when the movable iron core 10 moves rightwards under electromagnetic force, the second spring 25 presents a pressing state, and when the electromagnetic force disappears, the restoring force of the second spring 25 can drive the movable iron core 10 to move leftwards; the cover plate 8 is arranged on the electromagnetic coil 71, and in the embodiment of the application, the cover plate 8 is locked on the electromagnetic coil 71 by a nut, and a cover plate sealing ring 81 arranged on the cover plate 8 is isolated from the outside atmosphere, so that good tightness and waterproof and dustproof effects are ensured.
In addition, the electromagnetic integrated reversing valve further comprises a fourth channel D, the pilot valve body 6 is provided with a control port 4, the cover plate 8 is provided with a groove channel, the static iron core 9 is provided with a middle through hole, one opening end of the middle through hole is movably connected with the second sealing plug 101, the other opening end of the middle through hole is connected with the groove channel in an air way, that is, when the second sealing plug 101 is driven to the right by the movable iron core 10, the second sealing plug 101 plugs the opening end of the upper end of the middle through hole, otherwise, when the second sealing plug 101 moves to the left, air flow can flow through the middle through hole; the electromagnetic coil 71 is provided with a coil through hole, the coil through hole is a through hole marked with D on the electromagnetic coil 71 in fig. 6, one end of the coil through hole is connected with the groove channel, and the other end of the coil through hole is connected with the connecting channel connected with the control port 4 on the pilot valve body 6; the fourth channel D is a channel connecting the third valve cavity 5141, the middle through hole of the static iron core 9, the groove channel of the cover plate 8, the coil through hole of the electromagnetic coil 71, and the connecting channel of the pilot valve body 6, which is connected with the control port 4. As shown in fig. 4, the second spring 25 is disposed between the movable iron core 10 and the guide sleeve 92, the movable iron core 10 is movably disposed in the iron core cavity 514, and the movable iron core 10 is inlaid with the first sealing plug 102 matched with the second channel B and the second sealing plug 101 matched with the fourth channel D, so as to ensure good tightness; the movable iron core 10 is abutted against the second channel B under the action of the second spring 25, so that the second channel B is closed, the second channel B is closed with the third channel C, and the third channel C is communicated with the fourth channel D.
In addition, referring to fig. 6 and 7, the valve body 51 further includes a first exhaust port 32, a second exhaust port 31, and an exhaust passage G connecting the third working port 21, the piston chamber 513, and the second exhaust port 31; the first exhaust port 32 is in air path connection with the second working port 22.
The following describes the working state of the electromagnetic integrated reversing valve of the application:
when the pilot valve is used, compressed air enters the valve body 51 through the air inlet 1, one part of the compressed air is discharged through the first channel A and then is discharged through the second working port 22 to work, the other part of the compressed air is discharged through the first working port 2 to work, and the last part of the compressed air reaches the pilot valve body 6 through the second channel B.
When the second working port 22 is required to be switched to the third working port 21, the control port 4 is ventilated, the piston 11 is pushed to move leftwards through the fourth channel D and the third channel C, the piston 11 pushes the valve rod assembly 12 to overcome the first spring 14 to move leftwards, the air inlet 1 and the first working port 2 are communicated with the third working port 21, the air inlet 1 and the first working port 2 are disconnected from the second working port 22, and as shown in fig. 8, the air pressure of the second working port 22 is discharged into the atmosphere from the air outlet 32, so that the reversing is completed. Meanwhile, when the piston 11 pushes the valve rod assembly 12 to move leftwards against the first spring 14, air at the front end of the piston 11 passes through the exhaust passage G provided in the valve body 51 and is exhausted to the atmosphere through the exhaust port 31.
When the control port 4 is ventilated and the electromagnetic coil 71 is electrified, the movable iron core 10 is attracted with the static iron core 9 under the action of the magnetic force of the electromagnetic coil 71, at the moment, the second sealing plug 101 on the movable iron core 10 seals the fourth channel D, the third channel C seals the fourth channel D, the second channel B is opened and is communicated with the third channel C, at the moment, compressed air pushes the piston 11 to move leftwards through the second channel B and the third channel C, the piston 11 pushes the valve rod assembly 12 to overcome the first spring 14 to move leftwards, the air inlet 1 and the first working port 2 are communicated with the third working port 21, the air inlet 1 and the first working port 2 are disconnected with the second working port 22, and the air pressure of the second working port 22 is discharged into the atmosphere from the air outlet 32, so that the reversing is completed. When the ventilation of the control port 4 is stopped at this time, the switching state of the third working port 21 is ensured under the condition that the electromagnetic coil 71 is electrified, so that the problem that the third working port 21 cannot be switched due to the interruption of the ventilation of the control port 4 is avoided. When the operation port needs to be switched again, the electromagnetic coil 71 is powered off and ventilation to the control port 4 is stopped, at this time, the valve rod assembly 12 is reset under the action of the first spring 14, gas between the piston 11 and the movable iron core 10 is discharged from the control port 4 through the fourth channel D, and at the same time, the air pressure of the third operation port 21 is discharged from the air outlet 31 to the atmosphere.
In addition, when only the first working port 2 is required to exhaust and the third working port 21 or the second working port 22 is not required to be ventilated, only the ejector rod 24 is required to be pressed down so that the ejector rod valve rod 23 compresses the third spring 15 to move, the spacer 17 is disconnected from the small hole formed in the ejector rod valve rod 23, and at this time, the compressed air of the air inlet 1 can only be exhausted from the first working port 2, the first working port 2 is disconnected from the second working port 22, and the first working port 2 is disconnected from the third working port 21.
In summary, due to the adoption of the technical characteristics, compared with the prior art, the invention has the following advantages and positive effects:
the electromagnetic integrated reversing valve has reversing protection, is higher in reliability, and can realize various control modes;
Secondly, the valve body structure and the passage design of the application are compact, have good waterproof and dustproof effects, and are convenient for installation;
thirdly, the valve body has stronger adaptive capacity to environment, more stable and reliable operation and longer service life.
The preferred embodiments of the invention are provided only to help illustrate the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof. The foregoing description of the preferred embodiments of the present invention is provided for illustration only, and is not intended to be limiting, since various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (2)
1. The electromagnetic integrated reversing valve is characterized by comprising a push rod assembly, a valve body assembly, a pilot valve body and an electromagnetic coil assembly, wherein the valve body assembly comprises a valve body and a valve rod assembly, the push rod assembly is arranged on the valve body, and a push rod cavity is formed between the valve body and the push rod assembly;
The valve body is provided with a valve cavity, and the valve rod assembly is arranged in the valve cavity;
the pilot valve body is arranged between the valve body assembly and the electromagnetic coil assembly, a piston cavity is formed in the position where the pilot valve body is connected with the valve body cavity, a piston of the valve rod assembly is arranged in the piston cavity, the pilot valve body and the electromagnetic coil assembly form an iron core cavity, and the iron core cavity close to one side of the pilot valve body is a third valve cavity;
The electromagnetic integrated reversing valve further comprises a first channel, a second channel and a third channel, wherein an air inlet of the valve body is connected with a first working port and the ejector rod cavity respectively through an air channel, one end of the first channel is connected with the ejector rod cavity, the other end of the first channel is connected with the valve body cavity, one end of the second channel is connected with the air channel between the air inlet and the first working port, and the other end of the second channel is connected with the third valve cavity; the third passage connects the third valve chamber and the piston chamber;
The valve rod assembly divides the valve body cavity into a first valve cavity and a second valve cavity; the first valve cavity is connected with a second working port, and the second valve cavity is connected with a third working port; the valve body assembly further comprises a rear cover and a first spring, the rear cover covers an opening connected with the valve body cavity, and two ends of the first spring are respectively connected with the rear cover and the valve rod assembly;
The ejector rod assembly comprises an ejector rod, an ejector rod seat, an ejector rod valve rod, a third spring, a stop pin, a lower stop block, a spacer bush, an ejector rod sealing ring and an upper stop block, wherein the lower stop block, the spacer bush, the ejector rod sealing ring and the upper stop block are sequentially arranged in the ejector rod cavity, and the ejector rod valve rod is inserted into and connected with the lower stop block, the spacer bush, the ejector rod sealing ring and the upper stop block; the ejector rod is arranged on the ejector rod seat, one end of the ejector rod valve rod is connected with the ejector rod, the other end of the ejector rod valve rod is provided with a spring groove, one end of the third spring is connected with the spring groove, and the other end of the third spring is abutted against a step part connected with the first channel;
The electromagnetic coil assembly further comprises an electromagnetic coil, a cover plate, a movable iron core, a static iron core, a guide sleeve, a second spring, a first sealing plug and a second sealing plug, wherein the guide sleeve is arranged in the iron core cavity, and the static iron core is arranged in the guide sleeve in an interference manner; the movable iron core is movably arranged in the guide sleeve; the second sealing plug is arranged at one end of the movable iron core, which faces the static iron core, and the first sealing plug is arranged at the other end of the movable iron core; one end of the movable iron core, which faces the pilot valve body, is provided with a spring arc part, and the second spring is arranged on the spring arc part; the cover plate is arranged on the electromagnetic coil;
The electromagnetic integrated reversing valve further comprises a fourth channel, the pilot valve body is provided with a control port, the cover plate is provided with a groove channel, the static iron core is provided with a middle through hole, one opening end of the middle through hole is movably connected with the second sealing plug, and the other opening end of the middle through hole is connected with the groove channel through a gas circuit; the electromagnetic coil is provided with a coil through hole, one end of the coil through hole is connected with the groove channel, and the other end of the coil through hole is connected with a connecting channel which is connected with the control port on the pilot valve body; the fourth channel is a channel which is connected with the third valve cavity, the middle through hole of the static iron core, the groove channel of the cover plate, the coil through hole of the electromagnetic coil and the connecting channel of the pilot valve body, wherein the connecting channel is connected with the control port.
2. The reverse protected solenoid-actuated integrated reverse valve of claim 1, wherein said valve body further comprises a first exhaust port, a second exhaust port, and an exhaust passage connecting said third working port, a piston chamber, and said second exhaust port; the first exhaust port is connected with the second working port through an air path.
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| CN202110995496.0A CN113606359B (en) | 2021-08-27 | 2021-08-27 | Electromagnetic integrated reversing valve with reversing protection function |
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| CN202110995496.0A CN113606359B (en) | 2021-08-27 | 2021-08-27 | Electromagnetic integrated reversing valve with reversing protection function |
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| CN113606359A CN113606359A (en) | 2021-11-05 |
| CN113606359B true CN113606359B (en) | 2024-06-07 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109798687B (en) * | 2017-11-17 | 2022-09-06 | 浙江盾安机械有限公司 | Combination valve and air conditioner |
| CN115182993B (en) * | 2022-06-27 | 2023-11-07 | 陕西法士特齿轮有限责任公司 | Double-pneumatic-control integrated valve and protection gas circuit system adopting same |
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