CN114087398A - Double-diaphragm electromagnetic valve - Google Patents

Double-diaphragm electromagnetic valve Download PDF

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Publication number
CN114087398A
CN114087398A CN202111552250.2A CN202111552250A CN114087398A CN 114087398 A CN114087398 A CN 114087398A CN 202111552250 A CN202111552250 A CN 202111552250A CN 114087398 A CN114087398 A CN 114087398A
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CN
China
Prior art keywords
diaphragm
valve
assembly
port
cavity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111552250.2A
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Chinese (zh)
Inventor
曹月秋
王旭
吴鹏
姚旭栋
高凤彬
张冬明
张克楠
陈�峰
张志国
张天乐
宋成良
曹睿
王昌雨
陈明阳
赫鑫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anshan Solenoid Valve Co ltd
Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Original Assignee
Anshan Solenoid Valve Co ltd
Shanghai Nuclear Engineering Research and Design Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anshan Solenoid Valve Co ltd, Shanghai Nuclear Engineering Research and Design Institute Co Ltd filed Critical Anshan Solenoid Valve Co ltd
Priority to CN202111552250.2A priority Critical patent/CN114087398A/en
Publication of CN114087398A publication Critical patent/CN114087398A/en
Pending legal-status Critical Current

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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
    • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • 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
    • F16K31/0641—Multiple-way valves the valve member being a diaphragm
    • 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
    • F16K31/10—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid with additional mechanism between armature and closure member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • F16K31/1268—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like with a plurality of the diaphragms

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

The application relates to the technical field of electromagnetic valves, in particular to a double-diaphragm electromagnetic valve. The double-diaphragm electromagnetic valve comprises a valve body, a first diaphragm assembly, a second diaphragm assembly and a pilot control mechanism, wherein a first diaphragm upper cavity and a first diaphragm lower cavity are formed on two sides of the first diaphragm assembly by the valve body, and a second diaphragm upper cavity and a second diaphragm lower cavity are formed on two sides of the second diaphragm assembly by the valve body; an air inlet channel, a working channel and an exhaust channel are formed in the valve body, and the working channel is communicated with the air inlet channel through the lower cavity of the first diaphragm or communicated with the exhaust channel through the lower cavity of the second diaphragm. The pilot control mechanism controls the first diaphragm assembly and the second diaphragm assembly to realize runner reversing, so that reversing of the two-position three-way electromagnetic valve is realized by arranging the double diaphragms and matching with the pilot control mechanism, sealing of the runner with the large drift diameter can be better realized, the drift diameter of the electromagnetic valve can be improved to a certain extent, and the double-diaphragm electromagnetic valve can be suitable for large-flow occasions.

Description

Double-diaphragm electromagnetic valve
Technical Field
The application relates to the technical field of electromagnetic valves, in particular to a double-diaphragm electromagnetic valve.
Background
The two-position three-way electromagnetic valve is generally provided with an air inlet, an air outlet and a working port, and the electromagnetic valve is reversed through the movement of a valve rod so as to communicate the air inlet of the electromagnetic valve with the working port or communicate the working port of the electromagnetic valve with the air outlet; however, the conventional two-position three-way electromagnetic valve is small in drift diameter due to a sealing structure, and is not suitable for occasions with large flow.
Disclosure of Invention
The invention aims to provide a double-diaphragm electromagnetic valve, which is used for increasing the drift diameter of the electromagnetic valve to a certain extent and enabling the electromagnetic valve to be suitable for large-flow occasions.
The invention provides a double-diaphragm electromagnetic valve which comprises a valve body, a first diaphragm assembly, a second diaphragm assembly and a pilot control mechanism, wherein the first diaphragm assembly is arranged on the valve body; the first diaphragm assembly and the second diaphragm assembly are respectively arranged in the valve body, a first diaphragm upper cavity and a first diaphragm lower cavity are formed on two sides of the first diaphragm assembly by the valve body, and a second diaphragm upper cavity and a second diaphragm lower cavity are formed on two sides of the second diaphragm assembly by the valve body; the valve body is provided with an air inlet flow passage, a working flow passage and an exhaust flow passage, the working flow passage is communicated with the air inlet flow passage through the lower cavity of the first diaphragm, and the working flow passage is communicated with the exhaust flow passage through the lower cavity of the second diaphragm; the pilot control mechanism is communicated with the first diaphragm upper cavity and the second diaphragm upper cavity, and is used for controlling the first diaphragm assembly and the second diaphragm assembly so as to cut off or open the communication between the working flow passage and the air inlet flow passage through the first diaphragm assembly and cut off or open the communication between the working flow and the exhaust flow passage through the second diaphragm assembly.
Further, the valve body comprises a valve body main body, a first end cover and a second end cover; the first end cover and the second end cover are respectively detachably arranged on two sides of the valve body main body; the first diaphragm assembly is clamped between the first end cap and the valve body, and the second diaphragm assembly is clamped between the second end cap and the valve body.
Further, the pilot control mechanism comprises a first air passage and a second air passage which are formed in the valve body; the first air path is communicated with the second air path, the first air path is communicated with the air inlet channel, and the second air path is communicated with the first diaphragm upper cavity.
Furthermore, the pilot control mechanism also comprises a third air path and a fourth air path which are formed in the valve body; the valve body is provided with a valve cavity, the third air path and the fourth air path are communicated with the valve cavity, the third air path is communicated with the first air path, and the fourth air path is communicated with the upper cavity of the second diaphragm.
Further, the double-diaphragm electromagnetic valve also comprises a valve rod; the valve rod is movably arranged in the valve cavity along a first direction, and when the valve rod moves along the first direction to abut against the bottom wall of the valve cavity, the valve rod can seal a port of the third air passage on the bottom wall of the valve cavity.
Further, the first air passage is communicated with the air inlet flow passage.
Further, a pilot air inlet is formed in the valve body and is used for being communicated with air supply equipment, and the pilot air inlet is communicated with the first air path.
Furthermore, the double-diaphragm electromagnetic valve further comprises an electromagnetic head, the electromagnetic head is connected with the valve body through a pipe assembly, and the valve rod is connected with a movable iron core assembly of the electromagnetic head; the movable iron core assembly can move along the first direction to drive the valve rod to move along the first direction.
Further, a manual lever is rotatably connected to the pipe assembly, so that the manual lever can rotate around the axis of the manual lever; a driving part is eccentrically arranged at one end of the manual lever in the length direction and extends to the position below the movable iron core component facing the valve rod; the rotation of the manual lever can turn the driving part between a first position located at the lower part and a second position located at the upper part; when the driving part is located at the first position, the movable iron core assembly can drive the valve rod to move downwards until the valve rod abuts against the bottom wall of the valve cavity; when the driving part is located at the second position, the driving part can jack the movable iron core assembly upwards so as to enable the valve rod to be lifted away from the bottom wall of the valve cavity.
Furthermore, a port of the inlet runner, which is communicated with the first diaphragm lower cavity, is a first port of the inlet runner, a port of the working runner, which is communicated with the first diaphragm lower cavity, is a first port of the working runner, and the first port of the inlet runner is arranged around the circumference of the first port of the working runner; the port of the exhaust runner communicated with the second diaphragm lower cavity is a second port of the exhaust runner, the port of the working runner communicated with the second diaphragm lower cavity is a second port of the working runner, and the second port of the working runner is arranged around the circumference of the second port of the exhaust runner.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a double-diaphragm electromagnetic valve which comprises a valve body, a first diaphragm assembly, a second diaphragm assembly and a pilot control mechanism, wherein the first diaphragm assembly and the second diaphragm assembly are arranged in the valve body, a first diaphragm upper cavity and a first diaphragm lower cavity are formed on two sides of the first diaphragm assembly by the valve body, and a second diaphragm upper cavity and a second diaphragm lower cavity are formed on two sides of the second diaphragm assembly by the valve body. An air inlet channel, a working channel and an exhaust channel are formed in the valve body, the working channel can be communicated with the air inlet channel through the lower cavity of the first diaphragm, and the working channel can be communicated with the exhaust channel through the lower cavity of the second diaphragm.
The pilot control mechanism is communicated with the first diaphragm upper cavity and the second diaphragm upper cavity and can control the pressure of the first diaphragm upper cavity and the second diaphragm upper cavity so as to control the first diaphragm assembly and the second diaphragm assembly and realize the reversing of the electromagnetic valve, namely the switching of the communication state of the working flow channel with the air inlet flow channel and the exhaust flow channel; when the air inlet flow channel is communicated with the working flow channel, the communication between the working flow channel and the exhaust flow channel is cut off through the second diaphragm assembly; when the working flow passage communicates with the exhaust flow passage, the communication between the intake flow passage and the working flow passage is cut off by the first diaphragm assembly.
Therefore, through setting up two diaphragms and cooperating guide control mechanism and not only having realized two three solenoid valve's switching-over, can realize the sealed of the runner of big latus rectum better through two diaphragm subassemblies simultaneously to can improve the latus rectum of solenoid valve to a certain extent, make the two diaphragm solenoid valves of this application can be applicable to large-traffic occasion.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a dual diaphragm solenoid valve according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a dual diaphragm solenoid valve according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a manual lever of a dual-diaphragm solenoid valve according to an embodiment of the present invention.
Reference numerals:
1-an electromagnetic head, 11-a movable iron core assembly, 12-a valve rod, 13-a pipe assembly, 2-a valve body, 21-an air inlet channel, 22-a working channel, 23-a first diaphragm upper cavity, 24-a second diaphragm upper cavity, 25-an exhaust channel, 26-a first air channel, 27-a second air channel, 28-a third air channel, 3-a first diaphragm assembly, 4-a second diaphragm assembly, 5-a manual rod and 51-a driving part.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A dual diaphragm solenoid valve according to some embodiments of the present application is described below with reference to fig. 1-3.
Example one
An embodiment one of the present application provides a dual diaphragm solenoid valve, as shown in fig. 1, including a valve body 2, a first diaphragm assembly 3, a second diaphragm assembly 4, and a pilot control mechanism.
Preferably, the valve body 2 includes a valve body main body, a first end cover and a second end cover, the first end cover and the second end cover being detachably mounted on both sides of the valve body main body, respectively; the first membrane component 3 is clamped between the valve body main body and the first end cover, a first membrane upper cavity 23 is formed between the first membrane component 3 and the first end cover, and a first membrane lower cavity is formed between the first membrane component 3 and the valve body main body; the second diaphragm assembly 4 is clamped between the valve body and the second end cap, and a second diaphragm upper chamber 24 is formed between the second diaphragm assembly 4 and the second end cap, and a second diaphragm lower chamber is formed between the second diaphragm assembly 4 and the valve body.
The double-diaphragm electromagnetic valve is a two-position three-way electromagnetic valve, an air inlet channel 21, a working channel 22 and an exhaust channel 25 are formed in the valve body 2, the working channel 22 can be communicated with the air inlet channel 21 through a first diaphragm lower cavity, and the working channel 22 can be communicated with the exhaust channel 25 through a second diaphragm lower cavity.
Preferably, the port of the working channel 22 communicating with the first diaphragm lower cavity is a first port of the working channel 22, the port of the intake channel 21 communicating with the first diaphragm lower cavity is a first port of the intake channel 21, and the first port of the intake channel 21 is annular and surrounds the circumference of the first port of the working channel 22.
The port of the working channel 22 communicating with the lower cavity of the second diaphragm is a second port of the working channel 22, the port of the exhaust channel 25 communicating with the lower cavity of the second diaphragm is a second port of the exhaust channel 25, and the second port of the working channel 22 is annular and surrounds the circumference of the second port of the exhaust channel 25.
The first diaphragm assembly 3 can elastically deform due to different pressures on two sides, and when the pressure of the first diaphragm upper cavity 23 is greater than that of the first diaphragm lower cavity, the elastic deformation of the first diaphragm assembly 3 can enable the first diaphragm assembly 3 to abut against the first port of the working flow channel 22, so that the first port of the working flow channel 22 is blocked, and the communication between the working flow channel 22 and the air inlet flow channel 21 is cut off; conversely, when the pressure of the first diaphragm upper chamber 23 is less than the pressure of the first diaphragm lower chamber, the elastic deformation of the first diaphragm assembly 3 causes the first port of the working flow passage 22 to be opened to open the communication of the working flow passage 22 with the intake flow passage 21.
Similarly, the second diaphragm assembly 4 elastically deforms due to the difference in pressure applied to the two sides thereof to open or close the second port of the exhaust flow passage 25, thereby opening or closing the communication between the working flow passage 22 and the exhaust flow passage 25.
The pilot control mechanism is communicated with the first diaphragm upper cavity 23 and the second diaphragm upper cavity 24, and can control the pressure of the first diaphragm upper cavity 23 and the second diaphragm upper cavity 24 so as to control the first diaphragm assembly 3 and the second diaphragm assembly 4 and realize the reversing of the electromagnetic valve, namely, the switching of the communication state of the working flow channel 22 with the air inlet flow channel 21 and the exhaust flow channel 25; when the intake runner 21 communicates with the working runner 22, the communication between the working runner 22 and the exhaust runner 25 is cut off by the second diaphragm assembly 4; when the working flow passage 22 communicates with the exhaust flow passage 25, the communication of the intake flow passage 21 and the working flow passage 22 is cut off by the first diaphragm assembly 3.
The structure of the pilot control mechanism and how to effect reversal of the solenoid valve will be described below.
In this embodiment, preferably, the pilot control mechanism includes a first air passage 26, a second air passage 27, a third air passage 28 and a fourth air passage (not shown in the figure) formed in the valve body 2, and one end of the first air passage 26 is communicated with the intake runner 21 so that the medium in the intake runner 21 can flow into the first air passage 26 to be used as a pilot air; the first membrane upper cavity 23 is communicated with a first air path 26 through a second air path 27, and the second membrane upper cavity 24 is communicated with the first air path 26 through a third air path 28 and a fourth air path; preferably, the valve body 2 is formed with a valve cavity, one end of the third air passage 28 is communicated with the first air passage 26, and the other end of the third air passage 28 is formed with a port at the bottom wall of the valve cavity, so that the third air passage 28 can be communicated with the valve cavity; one end of the fourth gas path is communicated with the second diaphragm upper chamber 24, and the other end of the fourth gas path forms a port on the side wall of the valve chamber, so that the fourth gas path is communicated with the valve chamber, and the second diaphragm upper chamber 24 can be communicated with the first gas path 26 through the fourth gas path, the valve chamber and the third gas path 28.
The communication between the third air path 28 and the fourth air path can be cut off, preferably, the double-diaphragm solenoid valve comprises an electromagnetic head 1 and a valve rod 12, the electromagnetic head 1 is connected with the valve body 2 through a pipe assembly 13, the valve rod 12 is positioned in the valve cavity, and the valve rod 12 is connected with a movable iron core assembly 11 of the electromagnetic head 1; when the electromagnetic valve is powered on or powered off, the movable iron core assembly 11 can move in a first direction, namely a vertical direction (the structure of the electromagnetic head 1 and how the electromagnetic head 1 realizes the movement of the movable iron core assembly 11 are the prior art, and the description is omitted, and the movement can be understood by a person skilled in the art), and then the movable iron core assembly 11 drives the valve rod 12 to move in the valve cavity in the vertical direction, so that the valve rod 12 can move downwards to abut against the bottom wall of the valve cavity, or the valve rod 12 is lifted upwards to a preset height away from the bottom wall of the valve cavity; when the valve rod 12 abuts against the bottom wall of the valve cavity, the valve rod 12 can seal the port of the third air passage 28 on the bottom wall of the valve cavity, so that the communication between the third air passage 28 and the valve cavity is cut off, and the communication between the second diaphragm upper cavity 24 and the first air passage 26 is cut off.
When the electromagnetic valve is used, the air inlet channel 21 of the valve body 2 is communicated with an external air inlet pipeline, the working channel 22 of the valve body 2 is communicated with an external working pipeline, and the exhaust channel 25 of the valve body 2 is communicated with an external exhaust pipeline. When the electromagnetic valve is in a power-off state, the air inlet pipeline conveys media into the air inlet channel 21 of the valve body 2, the media in the air inlet channel 21 can flow into the second diaphragm upper cavity 24 through the first air channel 26 and the second air channel 27, so that the second diaphragm assembly 4 is pushed to the right side to plug the first port of the working channel 22, and the communication between the working channel 22 and the air inlet channel 21 is cut off. At this time, the second diaphragm upper chamber 24 and the first air passage 26 are in a disconnected state, and when the working channel 22 communicates with an external working channel, the pressure of the working channel 22, that is, the pressure in the working channel, is greater than the pressure of the second diaphragm upper chamber 24, so that the second diaphragm assembly 4 is pushed to the right side, and the working channel 22 communicates with the exhaust channel 25; that is, when the solenoid valve is in the deenergized state, the working flow passage 22 is communicated with the exhaust flow passage 25, the working flow passage 22 is not communicated with the intake flow passage 21, and the medium can flow to the exhaust flow passage 25 via the working flow passage 22.
When the electromagnetic valve is energized, the second diaphragm upper chamber 24 is communicated with the first air passage 26 through the fourth air passage, the valve chamber and the third air passage 28, and the medium in the first diaphragm upper chamber 23 and the medium in the inlet flow channel 21 flow to the second diaphragm upper chamber 24, so that the second diaphragm assembly 4 is pushed to the left side, and the communication between the working flow channel 22 and the exhaust flow channel 25 is cut off through the second diaphragm assembly 4; at this time, as the medium in the first diaphragm upper chamber 23 is discharged, the first diaphragm assembly 3 will be pushed to the left by the pressure in the inlet flow channel 21, so that the inlet flow channel 21 is communicated with the working flow channel 22; that is, when the solenoid valve is energized, the working flow passage 22 is not communicated with the exhaust flow passage 25, the working flow passage 22 is communicated with the intake flow passage 21, and the medium can flow to the working flow passage 22 via the intake flow passage 21.
Therefore, through setting up two diaphragms and cooperating guide control mechanism and not only having realized two three solenoid valve's switching-over, can realize the sealed of the runner of big latus rectum better through two diaphragm subassemblies simultaneously to can improve the latus rectum of solenoid valve to a certain extent, make the two diaphragm solenoid valves of this application can be applicable to large-traffic occasion.
Example two
As shown in fig. 2, a second embodiment of the present application provides another dual-diaphragm solenoid valve. The dual diaphragm solenoid valve of the second embodiment shown in fig. 2 is similar to the dual diaphragm solenoid valve of the first embodiment shown in fig. 1, except for the provision of the first air passage 26 of the pilot control mechanism.
In the second embodiment, the first air path 26 is not communicated with the air inlet channel 21, but a pilot air inlet is provided on the valve body 2, and the first air path 26 is communicated with the pilot air inlet and is communicated with an external air supply device through the pilot air inlet so as to convey a medium into the first air path 26 through the external air supply device to be used as a pilot air, thereby realizing zero pressure difference action of the valve body 2.
EXAMPLE III
The sixth embodiment is an improvement on the above embodiment, technical contents disclosed in the above embodiment are not described repeatedly, and the contents disclosed in the above embodiment also belong to the disclosure of the embodiment.
In the third embodiment, preferably, as shown in fig. 3, the electromagnetic head 1 is connected with the valve body 2 through a pipe assembly 13, and the manual lever 5 is rotatably connected to the pipe assembly 13, so that an operator can rotate the manual lever 5 to rotate the manual lever 5 around the axis thereof.
One end of the manual lever 5 in the length direction is eccentrically provided with a driving part 51, and the driving part 51 extends to the lower part of the movable iron core assembly 11; the manual lever 5 is rotated to enable the driving part 51 to turn over between a first position located below and a second position located above, and when the driving part 51 is rotated to the first position located below, the driving part 51 does not interfere with the movement of the movable iron core assembly 11, so that the movable iron core assembly 11 can drive the valve rod 12 to descend until the valve rod 12 abuts against the bottom wall of the valve cavity; and when the driving part 51 is rotated to the second position located above, the driving part 51 can jack up the movable iron core assembly 11 upwards, so as to drive the valve rod 12 to move upwards and lift away from the bottom wall of the valve cavity, and further realize the manual reversing of the electromagnetic valve.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A double-diaphragm electromagnetic valve is characterized by comprising a valve body, a first diaphragm assembly, a second diaphragm assembly and a pilot control mechanism;
the first diaphragm assembly and the second diaphragm assembly are respectively arranged in the valve body, a first diaphragm upper cavity and a first diaphragm lower cavity are formed on two sides of the first diaphragm assembly by the valve body, and a second diaphragm upper cavity and a second diaphragm lower cavity are formed on two sides of the second diaphragm assembly by the valve body;
the valve body is provided with an air inlet flow passage, a working flow passage and an exhaust flow passage, the working flow passage is communicated with the air inlet flow passage through the lower cavity of the first diaphragm, and the working flow passage is communicated with the exhaust flow passage through the lower cavity of the second diaphragm;
the pilot control mechanism is communicated with the first diaphragm upper cavity and the second diaphragm upper cavity, and is used for controlling the first diaphragm assembly and the second diaphragm assembly so as to cut off or open the communication between the working flow passage and the air inlet flow passage through the first diaphragm assembly and cut off or open the communication between the working flow and the exhaust flow passage through the second diaphragm assembly.
2. The dual diaphragm solenoid valve of claim 1 wherein said valve body comprises a valve body, a first end cap and a second end cap;
the first end cover and the second end cover are respectively detachably arranged on two sides of the valve body main body;
the first diaphragm assembly is clamped between the first end cap and the valve body, and the second diaphragm assembly is clamped between the second end cap and the valve body.
3. The dual diaphragm solenoid valve of claim 2 wherein said pilot control mechanism comprises a first gas passage and a second gas passage formed in said valve body;
the first air path is communicated with the second air path, the first air path is communicated with the air inlet channel, and the second air path is communicated with the first diaphragm upper cavity.
4. The dual diaphragm solenoid valve of claim 3 wherein said pilot control mechanism further comprises a third gas passage and a fourth gas passage formed in said valve body;
the valve body is provided with a valve cavity, the third air path and the fourth air path are communicated with the valve cavity, the third air path is communicated with the first air path, and the fourth air path is communicated with the upper cavity of the second diaphragm.
5. The dual diaphragm solenoid valve of claim 4 further comprising a valve stem;
the valve rod is movably arranged in the valve cavity along a first direction, and when the valve rod moves along the first direction to abut against the bottom wall of the valve cavity, the valve rod can seal a port of the third air passage on the bottom wall of the valve cavity.
6. The dual diaphragm solenoid valve of claim 3 wherein said first air passage is in communication with said inlet air flow passage.
7. The dual diaphragm solenoid valve of claim 3 wherein the valve body has a pilot inlet port for communicating with a gas supply, the pilot inlet port communicating with the first gas path.
8. The dual diaphragm solenoid valve of claim 5 further comprising a solenoid head connected to said valve body by a tube assembly and said valve stem connected to a plunger assembly of said solenoid head;
the movable iron core assembly can move along the first direction to drive the valve rod to move along the first direction.
9. The dual diaphragm solenoid valve of claim 8 wherein a manual lever is rotatably connected to said tube assembly such that said manual lever can rotate about its axis;
a driving part is eccentrically arranged at one end of the manual lever in the length direction and extends to the position below the movable iron core component facing the valve rod;
the rotation of the manual lever can turn the driving part between a first position located at the lower part and a second position located at the upper part;
when the driving part is located at the first position, the movable iron core assembly can drive the valve rod to move downwards until the valve rod abuts against the bottom wall of the valve cavity;
when the driving part is located at the second position, the driving part can jack the movable iron core assembly upwards so as to enable the valve rod to be lifted away from the bottom wall of the valve cavity.
10. The dual diaphragm solenoid valve of claim 1 wherein the port of the inlet conduit communicating with the first lower diaphragm chamber is a first port of the inlet conduit, the port of the working conduit communicating with the first lower diaphragm chamber is a first port of the working conduit, and the first port of the inlet conduit is disposed circumferentially around the first port of the working conduit;
the port of the exhaust runner communicated with the second diaphragm lower cavity is a second port of the exhaust runner, the port of the working runner communicated with the second diaphragm lower cavity is a second port of the working runner, and the second port of the working runner is arranged around the circumference of the second port of the exhaust runner.
CN202111552250.2A 2021-12-17 2021-12-17 Double-diaphragm electromagnetic valve Pending CN114087398A (en)

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CN202111552250.2A CN114087398A (en) 2021-12-17 2021-12-17 Double-diaphragm electromagnetic valve

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114562586A (en) * 2022-02-28 2022-05-31 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） Centralized control module for gas switching

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114562586A (en) * 2022-02-28 2022-05-31 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） Centralized control module for gas switching
CN114562586B (en) * 2022-02-28 2024-01-26 北京半导体专用设备研究所（中国电子科技集团公司第四十五研究所） Centralized control module for gas switching

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