CN116877711B - Pilot-operated electromagnetic diaphragm valve - Google Patents
Pilot-operated electromagnetic diaphragm valve Download PDFInfo
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- CN116877711B CN116877711B CN202311155390.5A CN202311155390A CN116877711B CN 116877711 B CN116877711 B CN 116877711B CN 202311155390 A CN202311155390 A CN 202311155390A CN 116877711 B CN116877711 B CN 116877711B
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- diaphragm
- assembly
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- 238000002955 isolation Methods 0.000 claims description 75
- 238000013022 venting Methods 0.000 claims description 29
- 238000007789 sealing Methods 0.000 claims description 26
- 239000012528 membrane Substances 0.000 claims description 20
- 230000000903 blocking effect Effects 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000000712 assembly Effects 0.000 abstract description 4
- 238000000429 assembly Methods 0.000 abstract description 4
- 239000010687 lubricating oil Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 12
- 239000001301 oxygen Substances 0.000 description 12
- 229910052760 oxygen Inorganic materials 0.000 description 12
- 238000005192 partition Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- 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
- F16K27/0236—Diaphragm cut-off apparatus
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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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/0624—Lift valves
- F16K31/0627—Lift valves with movable valve member positioned between seats
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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
- F16K31/126—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
Abstract
The application belongs to the technical field of electromagnetic valves, in particular to a pilot electromagnetic diaphragm valve, which comprises a main valve assembly and a pilot valve assembly, wherein the main valve assembly comprises a main valve body, a first diaphragm assembly and a second diaphragm assembly which are arranged in the main valve body, the pilot valve assembly comprises a pilot valve body, a valve rod, and a first pilot diaphragm assembly and a second pilot diaphragm assembly which are arranged on the valve rod, the valve cores are of diaphragm structures, lubricating oil is not required, pollution to gas is avoided in the air inlet and exhaust processes, and the purity of an air source is ensured; only one pilot valve is adopted, so that the actions of the two groups of diaphragm assemblies can be controlled simultaneously, the alternate operation of air inlet and air exhaust is controlled, and the control structure is simple; the control cooperativity of the double-diaphragm assembly is strong, the movement directions of the first diaphragm assembly and the second diaphragm assembly are always opposite, the first working cavity and the second working cavity cannot be subjected to air intake or exhaust, and the air intake and exhaust pressure is more stable.
Description
Technical Field
The application relates to the technical field of electromagnetic valves, in particular to a pilot-operated electromagnetic diaphragm valve.
Background
In medical oxygenerator, the valve core structure of its solenoid valve adopts the slide column type often, and slide column type valve core needs to use the lubricant, otherwise can influence the removal and the sealing of case, but, the lubricant can mix the produced oxygen of oxygenerator, pollutes the oxygen, leads to the oxygen purity degree poor, seriously influences the oxygen quality that the oxygenerator produced.
The prior art (CN 213711985U) discloses a diaphragm type electromagnetic valve for an oxygenerator, which adopts a double diaphragm type electromagnetic valve, and controls the opening and closing of two diaphragm valves respectively through two pilot valves to realize the alternate operation of air intake and air exhaust, however, the independent control of the two pilot valves has complex control structure, large control difficulty and poor synergy, and control errors are easy to occur, that is, when one diaphragm valve is in air intake, the other diaphragm valve may be in air intake, otherwise, when one diaphragm valve is in air exhaust, the other diaphragm valve may be in air exhaust, thus the larger pressure fluctuation of the air intake end of the oxygenerator is caused, the working pressure of the oxygenerator is unstable, equipment damage is easy to be caused, and the oxygen production quality is reduced.
Disclosure of Invention
The application aims to solve the problems of complex control structure, poor double-valve cooperativity, unstable gas pressure and the like of the prior art that a pilot electromagnetic diaphragm valve pollutes gas, and provides a pilot electromagnetic diaphragm valve.
In order to achieve the above object, the present application provides a pilot-operated electromagnetic diaphragm valve, which comprises a main valve assembly and a pilot valve assembly, wherein the main valve assembly comprises a main valve body, a first diaphragm assembly and a second diaphragm assembly which are installed in the main valve body, a first working port C1 and a second working port C2 are arranged between the first diaphragm assembly and the second diaphragm assembly, a first air inlet A1 is arranged at the upper part of the main valve body, and a first air outlet B1 is arranged at the lower part of the main valve body; the pilot valve assembly comprises a pilot valve body, a valve rod is vertically arranged in the pilot valve body, a valve rod inner channel is arranged in the valve rod, the lower end of the valve rod inner channel is communicated with a second exhaust port B2, a first pilot membrane assembly and a second pilot membrane assembly are fixedly arranged on the valve rod, and a second air inlet A2 is arranged between the first pilot membrane assembly and the second pilot membrane assembly; when the valve rod is positioned at the first working position of the upper part, the gas of the second gas inlet A2 passes through the second pilot diaphragm assembly to act on the left side of the first diaphragm assembly and the right side of the second diaphragm assembly, so that the second working port C2 is communicated with the first gas inlet A1 and the first working port C1 is communicated with the first gas outlet B1; when the valve rod moves downwards to the second working position, the gas of the second gas inlet A2 acts on the right side of the first diaphragm assembly and the left side of the second diaphragm assembly through the first pilot diaphragm assembly, so that the first working port C1 is communicated with the first gas inlet A1, and the second working port C2 is communicated with the first gas outlet B1.
Preferably, the main valve body comprises a main valve left wall, a main valve upper wall, a main valve lower wall and a main valve right wall, a first left isolation part, a first right isolation part and a second left isolation part and a second right isolation part which are mutually connected are horizontally arranged between the main valve left wall and the main valve right wall, the first left isolation part and the first right isolation part jointly isolate an upper cavity of the main valve, the second left isolation part and the second right isolation part jointly isolate a lower cavity of the main valve, a middle cavity is isolated between the upper cavity and the lower cavity, the first diaphragm assembly isolates the upper cavity into a first left isolation cavity, an air inlet cavity and a first right isolation cavity, the second diaphragm assembly isolates the lower cavity into a second left isolation cavity, an air outlet cavity and a second right isolation cavity, the vertical isolation part isolates the middle cavity into a first working cavity and a second working cavity, the first left isolation part, the second left isolation part, the first right isolation part and the first right isolation part are respectively provided with connecting holes, the connecting holes can isolate the first working cavity or the second working cavity with the first air inlet cavity, the second air outlet cavity, the first air inlet cavity and the second air outlet cavity, the first valve seat 1; the first diaphragm assembly comprises a first left diaphragm, a first right diaphragm and a first connecting rod for connecting the first left diaphragm and the first right diaphragm, the second diaphragm assembly comprises a second left diaphragm, a second right diaphragm and a second connecting rod for connecting the second left diaphragm and the second right diaphragm, the first left diaphragm is matched with a first left valve seat to be used for communicating or blocking an air inlet cavity and a first working cavity, the first right diaphragm is matched with a first right valve seat to be used for communicating or blocking the air inlet cavity and a second working cavity, the second left diaphragm is matched with a second left valve seat to be used for communicating or blocking an air outlet cavity and the first working cavity, and the second right diaphragm is matched with a second right valve seat to be used for communicating or blocking the air outlet cavity and the second working cavity; the valve rod side wall is provided with a first valve rod through hole and a second valve rod through hole which are communicated with a valve rod inner channel, the valve rod inner channel penetrates through the valve rod bottom and is communicated with a second exhaust port B2, the inner wall of the pilot valve body is provided with a first annular boss and a second annular boss, a first pilot diaphragm assembly is fixedly arranged between the lower side of the first annular boss and the valve rod, a second pilot diaphragm assembly is fixedly arranged between the upper side of the second annular boss and the valve rod, a third pilot diaphragm assembly is fixedly arranged on the outer side of the lower part of the valve rod, a first air vent cavity is arranged above the first pilot diaphragm assembly, a pilot air inlet cavity is arranged between the first pilot diaphragm assembly and the second pilot diaphragm assembly, a second air vent cavity A2 is arranged in the pilot air inlet cavity, a second air vent cavity is arranged between the second pilot diaphragm assembly and the third pilot diaphragm assembly, and is respectively communicated with a first right isolation cavity and a second left isolation cavity, and a second right isolation cavity; the first pilot diaphragm assembly is circular and comprises a first plane sealing part positioned at the periphery, a middle connecting part and a second plane sealing part positioned at the inner periphery, and a central hole fixed with the valve rod is formed in the second plane sealing part; the first plane sealing part, the connecting part and the second plane sealing part are flexibly connected, a first rigid supporting plate is arranged in the first plane sealing part, a second rigid supporting plate is arranged in the connecting part, a third rigid supporting plate is arranged in the second plane sealing part, and a plurality of air leakage holes are circumferentially arranged in the first plane sealing part; the second pilot diaphragm assembly has the same structure as the first pilot diaphragm assembly and has opposite installation directions; when the valve rod is positioned at a first working position at the upper part, the first pilot diaphragm assembly opens a first valve rod through hole and closes a gas leakage hole of the valve rod through hole, so that the first gas leakage cavity is communicated with the valve rod internal channel, the first gas leakage cavity is used for exhausting gas to block the second air inlet A2 from being communicated with the first gas leakage cavity, and meanwhile, the second pilot diaphragm assembly enables the second air inlet A2 to be communicated with the second gas leakage cavity to block the second gas leakage cavity from being communicated with the valve rod internal channel; when the valve rod moves downwards to a second working position, the first venting cavity is communicated with the second air inlet A2 and is blocked with the inner valve rod channel, and the second venting cavity is communicated with the inner valve rod channel and is blocked with the second air inlet A2.
Preferably, the main valve body and the pilot valve body are provided with a plurality of mounting holes, and the mounting holes are provided with valve covers.
Preferably, a first valve cover is arranged outside the first left isolation cavity, and a first main valve pressure relief opening a1 is arranged on the first valve cover.
Preferably, a second valve cover is arranged outside the second left isolation cavity, and a second main valve pressure relief opening b1 is arranged on the second valve cover.
Preferably, a third valve cover is arranged on the upper portion of the pilot valve body, an electromagnetic actuator is arranged on the upper portion of the third valve cover, and the electromagnetic actuator is connected with the valve rod.
Preferably, a fourth valve cover is arranged at the lower part of the pilot valve body, and the second exhaust port B2 is arranged on the fourth valve cover; the bottom of the valve rod is provided with a step, a reset spring is arranged between the step and the fourth valve cover, and a spring cavity is arranged between the third pilot diaphragm assembly and the fourth valve cover.
Preferably, a second pilot valve pressure relief opening b2 communicated with the first air release cavity and a first pilot valve pressure relief opening a2 communicated with the second air release cavity are formed in the right wall of the pilot valve body.
Preferably, the first air inlet A1 is communicated with the second air inlet A2, the first air outlet B1 is communicated with the second air outlet B2, the first main valve pressure relief opening A1 is communicated with the first pilot valve pressure relief opening A2, and the second main valve pressure relief opening B1 is communicated with the second pilot valve pressure relief opening B2.
Preferably, the left wall of the pilot valve body is a main valve right wall, a first air passing hole and a second air passing hole are arranged on the main valve right wall, the first air passing hole is communicated with the first right isolation cavity and the first air discharging cavity, and the second air passing hole is communicated with the second right isolation cavity and the second air discharging cavity.
The pilot-operated electromagnetic diaphragm valve provided by the application has the beneficial effects that:
1. the valve core is of a diaphragm structure, a sliding column valve core is not adopted, lubricating oil is not required to be used, pollution to gas can be avoided in the air inlet and exhaust processes, and the purity of an air source is guaranteed.
2. Only one pilot valve is adopted, so that the actions of the two groups of diaphragm assemblies can be controlled simultaneously, the alternate operation of air inlet and air exhaust is controlled, and the control structure is simple.
3. The control cooperativity of the double-diaphragm assembly is strong, the movement directions of the first diaphragm assembly and the second diaphragm assembly are always opposite, the first working cavity and the second working cavity cannot be subjected to air intake or exhaust, the air intake and exhaust pressure is more stable, the oxygen production process is more stable, and the service life of the oxygen generator is prolonged.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic view of a pilot operated solenoid diaphragm valve of the present application in a first operating position;
FIG. 2 is a schematic view of the pilot operated solenoid diaphragm valve of the present application in a second operating position;
FIG. 3 is a schematic diagram of a pilot valve assembly of the present application;
fig. 4 is a schematic structural view of a first pilot diaphragm assembly according to the present application.
In the figure: a main valve left wall 101, a main valve upper wall 102, a main valve lower wall 103, a main valve right wall 104, a first gas passing hole 1041, a second gas passing hole 1042, a first left valve seat 105, a first right valve seat 106, a second left valve seat 107, a second right valve seat 108, a first left partition 109, a second left partition 110, a first right partition 111, a second right partition 112, a first left partition 113, a first right partition 114, a first working chamber 115, a second working chamber 116, a second left partition 117, a second right partition 118, a vertical partition 119, a pilot valve right wall 201, a first valve cover 301, a second valve cover 302, a third valve cover 303, a fourth valve cover 304, a first left diaphragm 401, a first right diaphragm 402, a second left diaphragm 403, a second right diaphragm 404, a first link 405, a second link 406, a valve rod 501, a first valve rod through hole 5011, the second valve stem through hole 5012, the valve stem internal passage 5013, the electromagnetic actuator 502, the return spring 503, the first pilot diaphragm assembly 504, the vent hole 5041, the first planar seal 5042, the connection 5043, the second planar seal 5044, the center hole 5045, the first rigid support plate 5046, the second rigid support plate 5047, the third rigid support plate 5048, the second pilot diaphragm assembly 505, the third pilot diaphragm assembly 506, the first annular boss 507, the second annular boss 508, the first vent chamber 509, the pilot intake chamber 510, the second vent chamber 511, the spring chamber 512, the first inlet A1, the second inlet A2, the first outlet B1, the second outlet B2, the first working port C1, the second working port C2, the first main valve relief port A1, the first pilot relief port A2, the second main valve relief port B1, the second pilot relief port B2.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments herein more apparent, the technical solutions in the embodiments herein will be clearly and completely described below with reference to the accompanying drawings in the embodiments herein, and it is apparent that the described embodiments are some, but not all, embodiments herein. All other embodiments, based on the embodiments herein, which a person of ordinary skill in the art would obtain without undue burden, are within the scope of protection herein. It should be noted that, without conflict, the embodiments and features of the embodiments herein may be arbitrarily combined with each other.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, it is the meaning of "including but not limited to".
Referring to fig. 1-4, a pilot-operated electromagnetic diaphragm valve is provided, which comprises a main valve assembly and a pilot valve assembly, wherein the main valve assembly comprises a main valve body, a first diaphragm assembly and a second diaphragm assembly which are installed in the main valve body, the main valve body comprises a main valve left wall 101, a main valve upper wall 102, a main valve lower wall 103 and a main valve right wall 104, a first left isolation part 109, a first right isolation part 111 and a second left isolation part 110 and a second right isolation part 112 which are connected with each other are horizontally arranged between the main valve left wall 101 and the main valve right wall 104, the first left isolation part 109 and the first right isolation part 111 jointly isolate an upper cavity of the main valve, the second left isolation part 110 and the second right isolation part 112 jointly isolate a lower cavity of the main valve, a middle cavity is isolated between the upper cavity and the lower cavity, the first diaphragm assembly isolates the upper cavity into a first left isolation cavity 113, an air inlet cavity and a first right isolation cavity 114, the second diaphragm assembly isolates the lower cavity into a second left isolation cavity 117, an air outlet cavity and a second right isolation cavity 118, the vertical isolation part 111 isolates the lower cavity into a first work cavity 115 and a second work cavity 116C, and a first work cavity 115 is arranged in the second work cavity 116C; the first left isolation part 109, the second left isolation part 110, the first right isolation part 111, the second right isolation part 112 are all provided with connecting holes, the connecting holes can communicate the first working cavity 115 or the second working cavity 116 with an air inlet cavity or an air outlet cavity, the air inlet cavity is internally provided with a first left valve seat 105 and a first right valve seat 106, the air outlet cavity is internally provided with a second left valve seat 107 and a second right valve seat 108, the air inlet cavity is connected with the first air inlet A1, and the air outlet cavity is communicated with the first air outlet B1; the first diaphragm assembly comprises a first left diaphragm 401, a first right diaphragm 402 and a first connecting rod 405 for connecting the first left diaphragm 401 and the first right diaphragm 402, the second diaphragm assembly comprises a second left diaphragm 403, a second right diaphragm 404 and a second connecting rod 406 for connecting the second left diaphragm 403 and the second right diaphragm 404, the first left diaphragm 401 is matched with the first left valve seat 105 to be used for communicating or blocking an air inlet cavity and the first working cavity 115, the first right diaphragm 402 is matched with the first right valve seat 106 to be used for communicating or blocking an air inlet cavity and the second working cavity 116, the second left diaphragm 403 is matched with the second left valve seat 107 to be used for communicating or blocking an air outlet cavity and the first working cavity 115, and the second right diaphragm 404 is matched with the second right valve seat 108 to be used for communicating or blocking an air outlet cavity and the second working cavity 116; the pilot valve assembly comprises a pilot valve body, a valve rod 501 is arranged in the vertical direction of the inner wall of the pilot valve body, a valve rod inner channel 5013 is vertically arranged in the valve rod 501, a first valve rod through hole 5011 and a second valve rod through hole 5012 which are communicated with the valve rod inner channel 5013 are arranged on the side wall of the valve rod 501, the valve rod inner channel 5013 penetrates through the bottom of the valve rod 501 and is communicated with a second exhaust port B2, a first annular boss 507 and a second annular boss 508 are arranged on the inner wall of the pilot valve body, a first pilot membrane assembly 504 fixedly connected with the valve rod 501 is arranged on the lower side of the first annular boss 507, a second pilot membrane assembly 505 fixedly connected with the valve rod 501 is arranged on the upper side of the second annular boss 508, a third pilot membrane assembly 506 is also fixedly arranged on the outer side of the lower part of the valve rod 501, a first air leakage cavity 509 is arranged above the first pilot membrane assembly 504, a first air leakage cavity 510 is arranged between the first pilot membrane assembly 504 and the second pilot membrane assembly 505, a second air inlet A2 is arranged in the air inlet cavity 510, a second air inlet A2 is arranged between the second pilot membrane assembly 505 and the third pilot membrane assembly 506, a second air leakage cavity 511 and a second air leakage cavity 113 are respectively communicated with the second air cavity 118; the first pilot diaphragm assembly 504 is circular, and includes a first planar sealing portion 5042 located at the outer periphery, a connecting portion 5043 located at the middle, and a second planar sealing portion 5044 located at the inner periphery, wherein a central hole 5045 fixed to the valve rod 501 is provided in the second planar sealing portion 5044; the first plane sealing portion 5042, the connecting portion 5043 and the second plane sealing portion 5044 are flexibly connected, a first rigid support plate 5046 is arranged in the first plane sealing portion 5042, a second rigid support plate 5047 is arranged in the connecting portion 5043, a third rigid support plate 5048 is arranged in the second plane sealing portion 5044, and a plurality of air leakage holes 5041 are circumferentially arranged in the first plane sealing portion 5042; the second pilot diaphragm assembly 505 is identical to the first pilot diaphragm assembly 504 in structure and opposite in installation direction; when the valve rod 501 is located at the first working position of the upper part, the first pilot diaphragm assembly 504 opens the first valve rod through hole 5011 and closes the air release hole 5041 thereof, so that the first air release cavity 509 is communicated with the valve rod internal channel 5013, the first air release cavity 509 is exhausted to block the second air inlet A2 from being communicated with the first air release cavity 509, and meanwhile, the second pilot diaphragm assembly 505 enables the second air inlet A2 to be communicated with the second air release cavity 511 to block the second air release cavity 511 from being communicated with the valve rod internal channel 5013; when the valve stem 501 moves to the second working position of the lower portion, the first venting chamber 509 is in communication with the second air inlet A2 and is blocked from the valve stem internal passage 5013, and the second venting chamber 511 is in communication with the valve stem internal passage 5013 and is blocked from the second air inlet A2; the first working port C1 and the second working port C2 are respectively communicated with an oxygen-making molecular sieve of the oxygen generator, so that the alternating operation of air inlet and air exhaust of the oxygen generator is realized. In the application, in the main valve body for oxygen production, the valve core is of a diaphragm structure, a sliding column valve core is not adopted, lubricating oil is not required, pollution to gas is avoided in the air inlet and exhaust processes, the purity of an air source is ensured, and the quality of the prepared oxygen is improved; the two sets of diaphragm assemblies can be controlled simultaneously by only adopting one pilot valve, the air inlet and the air outlet are controlled to be alternately carried out, the control structure is simple, the valve rod is fixedly provided with the first pilot diaphragm assembly and the second pilot diaphragm assembly, the opening and closing states of the first pilot diaphragm assembly and the second pilot diaphragm assembly are opposite, the air inlet and the air outlet processes of the first working cavity and the second working cavity are opposite, only one working cavity is used for air inlet at the same time, the other working cavity is used for air outlet, the first working cavity and the second working cavity are not subjected to air inlet or air outlet, the control cooperativity of the double diaphragm assemblies is strong, the air inlet and the air outlet pressure are more stable, the oxygen generating process is more stable, and the service life of the oxygenerator is prolonged.
The main valve body and the pilot valve body are provided with a plurality of mounting holes, and the mounting holes are provided with valve covers. The pilot type electromagnetic diaphragm valve can be manufactured by various manufacturing processes in the prior art, and in the manufacturing process of equipment, the manufacturing and the installation of the internal components of the equipment can be realized through the installation holes, and if necessary, the main valve body or the pilot valve body can be manufactured in a split type so as to realize the assembly of the pilot type electromagnetic diaphragm valve.
A first valve cover 301 is arranged outside the first left isolation cavity 113, and a first main valve pressure relief opening a1 is arranged on the first valve cover 301; a second valve cover 302 is arranged outside the second left isolation cavity 117, and a second main valve pressure relief opening b1 is arranged on the second valve cover 302; a third valve cover 303 is arranged at the upper part of the pilot valve body, an electromagnetic actuator 502 is arranged at the upper part of the third valve cover 303, and the electromagnetic actuator 502 is connected with a valve rod 501; the lower part of the pilot valve body is provided with a fourth valve cover 304, and the second exhaust port B2 is arranged on the fourth valve cover 304; a second pilot valve pressure relief port b2 communicated with the first pressure relief cavity 509 and a first pilot valve pressure relief port a2 communicated with the second pressure relief cavity 511 are arranged on the pilot valve right wall 201 of the pilot valve body; the first air inlet A1 is communicated with the second air inlet A2, the first air outlet B1 is communicated with the second air outlet B2, the first main valve pressure relief opening A1 is communicated with the first pilot valve pressure relief opening A2, and the second main valve pressure relief opening B1 is communicated with the second pilot valve pressure relief opening B2. A valve cover is arranged at a proper position on the main valve body or the pilot valve body and is used for realizing the sealing of the mounting port; a plurality of through holes are arranged on the main valve body, the pilot valve body or the valve cover so as to realize the work of air inlet and air exhaust of the pilot electromagnetic diaphragm valve; the valve rod is operated by adopting a single electromagnetic actuator, and the control is simpler and more convenient.
The left wall of the pilot valve body is a main valve right wall 104, a first air passing hole 1041 and a second air passing hole 1042 are arranged on the main valve right wall 104, the first air passing hole 1041 is communicated with the first right isolation cavity 114 and the first air venting cavity 509, and the second air passing hole 1042 is communicated with the second right isolation cavity 118 and the second air venting cavity 511. In the application, the main valve body and the pilot valve body can be integrated together, and the main valve body and the pilot valve body are integrally formed.
A step is arranged at the bottom of the valve rod 501, a return spring 503 is arranged between the step and the fourth valve cover 304, and a spring cavity 512 is arranged between the third pilot diaphragm assembly 506 and the fourth valve cover 304. A return spring 503 is provided to return the valve stem to the first operating position when the electromagnetic actuator is de-energized.
The working principle of the application is as follows:
when the valve rod 501 is located at the first working position of the upper part, the first pilot diaphragm assembly 504 opens the first valve rod through hole 5011 and closes the air release hole 5041 thereof, so that the first air release cavity 509 is communicated with the valve rod internal channel 5013, the second air inlet A2 is blocked from being communicated with the first air release cavity 509, the first air release cavity 509 is exhausted, and the pressure of the second left isolation cavity 117, the first air release cavity 509 and the first right isolation cavity 114 is reduced; meanwhile, the second pilot diaphragm assembly 505 makes the second air inlet A2 communicate with the second air venting cavity 511, blocks the second air venting cavity 511 from communicating with the valve stem internal channel 5013, and the second air venting cavity 511 is inflated, so that the pressures of the first left isolation cavity 113, the second air venting cavity 511 and the second right isolation cavity 118 are increased, and the first diaphragm assembly moves rightward to make the first left diaphragm 401 abut against the first left valve seat 105, and the second diaphragm assembly moves leftward to make the second right diaphragm 404 abut against the second right valve seat 108, so as to realize the exhaust of the first working cavity 115 and the intake of the second working cavity 116.
When the valve rod 501 moves to the second working position of the lower part, the communication state of the first pilot diaphragm assembly 504 and the second pilot diaphragm assembly 505 is opposite, so that the first venting chamber 509 is communicated with the second air inlet A2 and blocked from the valve rod internal channel 5013, the first venting chamber 509 is in air, and the pressure of the second left isolation chamber 117, the first venting chamber 509 and the first right isolation chamber 114 is increased; the second venting chamber 511 is communicated with the valve stem inner channel 5013 and is blocked from the second air inlet A2, the second venting chamber 511 is vented, the pressures of the first left isolation chamber 113, the second venting chamber 511 and the second right isolation chamber 118 are reduced, so that the first diaphragm assembly moves leftwards, the second diaphragm assembly moves rightwards, and thus the air inlet of the first working chamber 115 and the air outlet of the second working chamber 116 are realized.
While preferred embodiments herein have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all alterations and modifications as fall within the scope herein.
It will be apparent to those skilled in the art that various modifications and variations can be made herein without departing from the spirit and scope of the disclosure. Thus, given that such modifications and variations herein fall within the scope of the claims herein and their equivalents, such modifications and variations are intended to be included herein.
Claims (9)
1. The pilot-operated electromagnetic diaphragm valve comprises a main valve assembly and a pilot valve assembly and is characterized in that the main valve assembly comprises a main valve body, a first diaphragm assembly and a second diaphragm assembly which are arranged in the main valve body, a first working port (C1) and a second working port (C2) are arranged between the first diaphragm assembly and the second diaphragm assembly, a first air inlet (A1) is arranged at the upper part of the main valve body, and a first air outlet (B1) is arranged at the lower part of the main valve body; the pilot valve assembly comprises a pilot valve body, a valve rod (501) is vertically arranged in the pilot valve body, a valve rod inner channel (5013) is arranged in the valve rod (501), the lower end of the valve rod inner channel (5013) is communicated with a second exhaust port (B2), a first pilot diaphragm assembly (504) and a second pilot diaphragm assembly (505) are fixedly arranged on the valve rod (501), and a second air inlet (A2) is formed between the first pilot diaphragm assembly (504) and the second pilot diaphragm assembly (505); when the valve rod (501) is positioned at the upper first working position, the gas of the second air inlet (A2) passes through the second pilot diaphragm assembly (505) to act on the left side of the first diaphragm assembly and the right side of the second diaphragm assembly, so that the second working opening (C2) is communicated with the first air inlet (A1) and the first working opening (C1) is communicated with the first air outlet (B1); when the valve rod (501) moves downwards to a second working position, the gas of the second gas inlet (A2) acts on the right side of the first diaphragm assembly and the left side of the second diaphragm assembly through the first pilot diaphragm assembly (504), so that the first working port (C1) is communicated with the first gas inlet (A1) and the second working port (C2) is communicated with the first gas outlet (B1);
the main valve body comprises a main valve left wall (101), a main valve upper wall (102), a main valve lower wall (103) and a main valve right wall (104), a first left isolation part (109), a first right isolation part (111) and a second left isolation part (110), a second right isolation part (112) which are mutually connected are horizontally arranged between the main valve left wall (101) and the main valve right wall (104), the first left isolation part (109), the first right isolation part (111) jointly isolate an upper cavity of the main valve, the second left isolation part (110) and the second right isolation part (112) jointly isolate a lower cavity of the main valve, a middle cavity is isolated between the upper cavity and the lower cavity, a first diaphragm assembly isolates the upper cavity into a first left isolation cavity (113), an air inlet cavity and a first right isolation cavity (114), the lower cavity is isolated into a second left isolation cavity (117), an air outlet cavity and a second right isolation cavity (118), a vertical isolation part (119) isolates the middle cavity into a first working cavity (115) and a second working cavity (116), the first left isolation part (116) is provided with a second left isolation cavity (116), the second left isolation cavity (116) and the first air inlet cavity (116) is connected with the first left isolation cavity (116) or the second air inlet cavity (116), a second left valve seat (107) and a second right valve seat (108) are arranged in the exhaust cavity, the air inlet cavity is connected with the first air inlet (A1), and the exhaust cavity is communicated with the first air outlet (B1);
the first diaphragm assembly comprises a first left diaphragm (401), a first right diaphragm (402) and a first connecting rod (405) for connecting the first left diaphragm (401) and the first right diaphragm (402), the second diaphragm assembly comprises a second left diaphragm (403), a second right diaphragm (404) and a second connecting rod (406) for connecting the second left diaphragm (403) and the second right diaphragm (404), the first left diaphragm (401) is matched with the first left valve seat (105) for communicating or blocking an air inlet cavity with the first working cavity (115), the first right diaphragm (402) is matched with the first right valve seat (106) for communicating or blocking an air inlet cavity with the second working cavity (116), the second left diaphragm (403) is matched with the second left valve seat (107) for communicating or blocking an exhaust cavity with the first working cavity (115), and the second right diaphragm (404) is matched with the second right valve seat (108) for communicating or blocking an exhaust cavity with the second working cavity (116);
the valve rod is characterized in that a first valve rod through hole (5011) and a second valve rod through hole (5012) which are communicated with an inner valve rod channel (5013) are formed in the side wall of the valve rod (501), the inner valve rod channel (5013) penetrates through the bottom of the valve rod (501) and is communicated with a second exhaust port (B2), a first annular boss (507) and a second annular boss (508) are arranged on the inner wall of the pilot valve body, a first pilot membrane assembly (504) is fixedly arranged between the lower side of the first annular boss (507) and the valve rod (501), a second pilot membrane assembly (505) is fixedly arranged between the upper side of the second annular boss (508) and the valve rod (501), a third pilot membrane assembly (506) is fixedly arranged on the outer side of the lower part of the valve rod (501), a first air-discharging cavity (509) is arranged above the first pilot membrane assembly (504), a second air-discharging cavity (510) is arranged between the first pilot membrane assembly (504) and the second pilot membrane assembly (505), a second air inlet (A2) is arranged in the air-discharging cavity (510), a second air-discharging cavity (511) is fixedly arranged between the second pilot membrane assembly (505) and the second membrane assembly (506), a second air-discharging cavity (511) and the second air-discharging cavity (511), and the first air-discharging cavity (117) are respectively communicated with the second air-discharging cavity (113) respectively The second right isolation chamber (118) is communicated; the first pilot diaphragm assembly (504) is circular and comprises a first plane sealing part (5042) positioned at the outer periphery, a middle connecting part (5043) and a second plane sealing part (5044) positioned at the inner periphery, and a central hole (5045) fixed with the valve rod (501) is arranged in the second plane sealing part (5044); the first plane sealing part (5042), the connecting part (5043) and the second plane sealing part (5044) are flexibly connected, a first rigid support plate (5046) is arranged in the first plane sealing part (5042), a second rigid support plate (5047) is arranged in the connecting part (5043), a third rigid support plate (5048) is arranged in the second plane sealing part (5044), and a plurality of air leakage holes (5041) are circumferentially arranged in the first plane sealing part (5042); the second pilot diaphragm assembly (505) is identical in structure and opposite in installation direction to the first pilot diaphragm assembly (504);
when the valve rod (501) is positioned at the first working position of the upper part, the first pilot diaphragm assembly (504) opens a first valve rod through hole (5011) and closes a venting hole (5041) of the valve rod through hole, so that the first venting cavity (509) is communicated with the valve rod inner channel (5013), the first venting cavity (509) is used for venting, the second air inlet (A2) is blocked from being communicated with the first venting cavity (509), and meanwhile, the second pilot diaphragm assembly (505) is used for enabling the second air inlet (A2) to be communicated with the second venting cavity (511) and blocking the second venting cavity (511) from being communicated with the valve rod inner channel (5013);
when the valve rod (501) moves downwards to a second working position, the first venting cavity (509) is communicated with the second air inlet (A2) and blocked with the valve rod inner channel (5013), and the second venting cavity (511) is communicated with the valve rod inner channel (5013) and blocked with the second air inlet (A2).
2. The pilot operated solenoid diaphragm valve of claim 1, wherein the main valve body and the pilot valve body are provided with a plurality of mounting holes, and the mounting holes are provided with valve covers.
3. The pilot-operated electromagnetic diaphragm valve according to claim 2, characterized in that a first valve cover (301) is arranged outside the first left isolation chamber (113), and a first main valve relief opening (a 1) is arranged on the first valve cover (301).
4. A pilot-operated electromagnetic diaphragm valve according to claim 3, characterized in that a second valve cover (302) is arranged outside the second left isolation chamber (117), and a second main valve relief opening (b 1) is arranged on the second valve cover (302).
5. The pilot operated electromagnetic diaphragm valve according to claim 4, wherein a third valve cover (303) is provided at an upper portion of the pilot valve body, an electromagnetic actuator (502) is provided at an upper portion of the third valve cover (303), and the electromagnetic actuator (502) is connected to the valve stem (501).
6. The pilot-operated electromagnetic diaphragm valve according to claim 5, characterized in that a fourth valve cover (304) is provided at the lower portion of the pilot valve body, and the second exhaust port (B2) is provided on the fourth valve cover (304); the bottom of the valve rod (501) is provided with a step, a return spring (503) is arranged between the step and the fourth valve cover (304), and a spring cavity (512) is arranged between the third pilot diaphragm assembly (506) and the fourth valve cover (304).
7. The pilot-operated electromagnetic diaphragm valve according to claim 6, characterized in that a second pilot-operated valve relief port (b 2) communicating with the first venting chamber (509) and a first pilot-operated valve relief port (a 2) communicating with the second venting chamber (511) are provided on a pilot-operated valve right wall (201) of the pilot-operated valve body.
8. The pilot operated solenoid diaphragm valve of claim 7, wherein the first inlet port (A1) communicates with the second inlet port (A2), the first outlet port (B1) communicates with the second outlet port (B2), the first main valve relief port (A1) communicates with the first pilot valve relief port (A2), and the second main valve relief port (B1) communicates with the second pilot valve relief port (B2).
9. The pilot-operated electromagnetic diaphragm valve according to claim 1, wherein the left wall of the pilot valve body is a main valve right wall (104), a first air passing hole (1041) and a second air passing hole (1042) are arranged on the main valve right wall (104), the first air passing hole (1041) is communicated with the first right isolation cavity (114) and the first air venting cavity (509), and the second air passing hole (1042) is communicated with the second right isolation cavity (118) and the second air venting cavity (511).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311155390.5A CN116877711B (en) | 2023-09-08 | 2023-09-08 | Pilot-operated electromagnetic diaphragm valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311155390.5A CN116877711B (en) | 2023-09-08 | 2023-09-08 | Pilot-operated electromagnetic diaphragm valve |
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| Publication Number | Publication Date |
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| CN116877711A CN116877711A (en) | 2023-10-13 |
| CN116877711B true CN116877711B (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311155390.5A Active CN116877711B (en) | 2023-09-08 | 2023-09-08 | Pilot-operated electromagnetic diaphragm valve |
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| CN (1) | CN116877711B (en) |
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| GB820904A (en) * | 1956-03-12 | 1959-09-30 | Gen Gas Light Co | Improvements relating to valves for the control of fluids |
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| CN205559877U (en) * | 2016-03-03 | 2016-09-07 | 余姚市三力信电磁阀有限公司 | Heavy -calibre guide formula two -position three way solenoid valve |
| CN206190992U (en) * | 2016-11-25 | 2017-05-24 | 宁波市爱托普气动液压有限公司 | Oxygenerator solenoid valve |
| CN111271489A (en) * | 2020-03-09 | 2020-06-12 | 柯尔(苏州)医疗科技有限公司 | Pneumatic combination valve for oxygenerator |
| CN215763442U (en) * | 2021-09-02 | 2022-02-08 | 宁波佳尔灵气动机械有限公司 | Diaphragm type electromagnetic valve of oxygenerator |
| CN215980938U (en) * | 2021-09-27 | 2022-03-08 | 宁波郅禾气动技术有限公司 | Electromagnetic gas distribution valve and oxygen generator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014046724A1 (en) * | 2012-09-19 | 2014-03-27 | Praxair Technology, Inc. | High purity ceramic oxygen generator |
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2023
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB820904A (en) * | 1956-03-12 | 1959-09-30 | Gen Gas Light Co | Improvements relating to valves for the control of fluids |
| CN2625678Y (en) * | 2003-07-16 | 2004-07-14 | 单谟君 | Diaphragm electromagnetic valve |
| CN205559877U (en) * | 2016-03-03 | 2016-09-07 | 余姚市三力信电磁阀有限公司 | Heavy -calibre guide formula two -position three way solenoid valve |
| CN206190992U (en) * | 2016-11-25 | 2017-05-24 | 宁波市爱托普气动液压有限公司 | Oxygenerator solenoid valve |
| CN111271489A (en) * | 2020-03-09 | 2020-06-12 | 柯尔(苏州)医疗科技有限公司 | Pneumatic combination valve for oxygenerator |
| CN215763442U (en) * | 2021-09-02 | 2022-02-08 | 宁波佳尔灵气动机械有限公司 | Diaphragm type electromagnetic valve of oxygenerator |
| CN215980938U (en) * | 2021-09-27 | 2022-03-08 | 宁波郅禾气动技术有限公司 | Electromagnetic gas distribution valve and oxygen generator |
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| Publication number | Publication date |
|---|---|
| CN116877711A (en) | 2023-10-13 |
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