CN215290438U - Pneumatic control magnetic suction on-off type water valve - Google Patents

Abstract

The utility model relates to a pneumatic control magnetic suction on-off type water valve, which comprises a valve body, a control pipeline, an input pipeline, an output pipeline and a control actuating mechanism, wherein the control pipeline, the input pipeline and the output pipeline are arranged in the valve body; the control execution mechanism comprises a first valve core assembly, a plug and a second valve core assembly; the control pipeline is internally and intermittently filled with air or forms vacuum to drive the first valve core assembly to drive the plug to move, so that the action of the second valve core assembly is realized through a water pipeline and a pressure relief pipeline in the valve body, and the input pipeline and the output pipeline are switched on and off; the utility model adopts the pneumatic control magnetic attraction open-close control technology, so that the open-close force of the pneumatic control water valve control plug can not be influenced by the water pressure, and the applicable water pressure change range is large; meanwhile, the control chamber is independently arranged, liquid entering from the input pipeline and the water pipeline cannot enter the control chamber, and further other devices connected with the control chamber cannot break down.

Description

Pneumatic control magnetic suction on-off type water valve

Technical Field

The utility model relates to a vacuum lavatory relevant equipment is with bath water valve technical field, in particular to on-off formula water valve is inhaled to gas accuse magnetism.

Background

Vacuum toilets, i.e. where the entire toilet system is made in a vacuum state, have a flush valve in the path to each toilet that is isolated from the system and opens when the toilet is flushed, relying on the pressure differential between atmospheric pressures to clear the toilet of waste. Most flushing water valves in the prior art adopt an electromagnetic water valve technology, and particularly, firstly, an electromagnet is electrified to adsorb the expansion of an iron core in the flushing water valve so as to control the opening and closing of a diaphragm in the flushing water valve; secondly, the electromagnet is electrified to rotate a spherical valve core rotor in the water valve so as to close the water valve; and thirdly, a two-position two-way electromagnetic reversing valve is adopted.

The three above methods all have the following common problems:

(1) the environment of the vacuum toilet installation site requires that electric wires and socket rows which are convenient to take and use must be configured, and a large number of wires and socket rows are needed in the later period of the vacuum toilet which is upgraded and reformed in a new rural dry toilet, so that the project cost is high; the configured wires, cables and power strips have great potential safety hazards, and the problems of the quality of the power strips and the cables and the wiring are also involved;

(2) the electricity utilization environment is unstable, particularly in rural areas in remote areas, such as northwest projects, the power in the rural areas is unstable, and individual places are not electrified in the morning in the evening, so that the electricity utilization environment cannot be used in the period of time or the use effect is influenced;

(3) the power consumption is larger, the technical scheme of electric drive is adopted in the prior art, the problem of power consumption exists, and the power consumption is larger especially in cold weather in winter and extreme weather which is hot and difficult to endure in summer;

(4) potential safety hazards exist, water, particularly flood is forbidden in the use environment of the vacuum closestool in the electric driving process, flood disasters and debris flow natural disasters occur in rural areas, particularly remote mountain areas, equipment faults can be caused, and the personal safety of users can be threatened;

(5) the maintenance time and the cost are high, the installation is inconvenient, the number of related matched parts is large in the installation and use process, the occupied space is large, and meanwhile, connection interference, such as wrong connection of pipelines and the like, can be caused to a certain extent along with the increase of the installation number of projects;

(6) the use cost is too high, the electromagnetic water valve needs to adopt a power supply, and the power source of the power supply generally comprises the following situations: firstly, the battery pack is adopted, and the defect is that the battery needs to be replaced periodically, if the battery is not replaced for a long time, the battery pack is in power shortage, and the corresponding equipment cannot be used; secondly, the mains supply is adopted, so that the limitation of leakage and unstable power supply of nearby power grid voltage exists, and the input cost is increased to a certain extent; thirdly, the solar energy is adopted for power supply, so that the charging is unstable due to the limitation of multiple factors such as seasons, weather, installation positions and the cleanliness of a battery panel, and the cost is relatively high; fourthly, wind power generation is adopted, and the problem of unstable charging caused by the influence of surrounding wind energy also exists; furthermore, other energy sources, such as fuel cells, are also included, which are expensive, irreparable and less convenient to use for control of electromagnetic valves.

At present, a pneumatic control flushing water valve also appears in the prior art, for example, a related patent applied by the first inventor, the range of the water pressure of a water inlet of the pneumatic control flushing water valve is limited, the pneumatic control flushing water valve is not suitable for the water pressure in a wider range, particularly the occasion with larger rural water pressure fluctuation range, and water supply pipelines in mountainous areas and hills and villages, more importantly, the service life of related parts in the prior art is easily influenced by the quality of water to be supplied, for example, the problem that the water supply source contains a large amount of water scale to cause premature failure of related parts; meanwhile, in the prior art, the installation mode of the pneumatic control flushing water valve generally adopts sheet metal clamp installation, and two or four parts are required to be arranged, so that the cost of the product is increased to a certain extent.

Consequently to each problem that exists among the prior art, the utility model develops a gas accuse magnetism and inhaled on-off formula water valve to solve the problem that exists among the prior art, through the retrieval, not discover with the utility model discloses the same or similar technical scheme.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is: the utility model provides a pneumatic control magnetic attraction on-off type water valve to solve among the prior art and be applied to the bath water valve water inlet water pressure range of vacuum closestool limited, be not suitable for more extensive water pressure, thereby lead to its relatively poor problem of suitability, and the problem of product spare part short-lived and mounting means cost is too high.

The technical scheme of the utility model is that: a pneumatic control magnetic on-off water valve comprises a valve body, a control pipeline, an input pipeline, an output pipeline and a control actuating mechanism, wherein the control pipeline, the input pipeline and the output pipeline are arranged in the valve body; the outer wall of the valve body is provided with a control port which is communicated with the control pipeline and intermittently introduces air or forms vacuum, an input port which is communicated with the input pipeline, and an output port which is communicated with the output pipeline; a water pipeline and a pressure relief pipeline are also arranged in the valve body; the control execution mechanism comprises a first valve core assembly, a plug and a second valve core assembly; the first valve core assembly is lifted by controlling pressure change in the pipeline and drives the plug to move synchronously; the plug is arranged between the water pipeline and the pressure relief pipeline, the on-off of the water pipeline and the pressure relief pipeline is controlled, and the pressure difference change of the upper end and the lower end of the second valve core component is realized; the second valve core assembly is arranged between the input pipeline and the output pipeline, and the input pipeline and the output pipeline are switched on and off by realizing lifting motion through pressure difference change.

Preferably, the valve body comprises a control chamber, a first one-way valve chamber, a second one-way valve chamber and a third one-way valve chamber which are coaxial and arranged in sequence; the first valve core assembly is arranged in the control chamber, and the control chamber is communicated with the control pipeline; the plug is arranged in the first one-way valve chamber and can movably extend into the second one-way valve chamber, and the second one-way valve chamber is communicated with the pressure relief pipeline and the water pipeline; the second valve core assembly is arranged in the third one-way valve chamber and divides the third one-way valve chamber into an upper chamber and a lower chamber, a throttling hole is formed between the upper chamber and the lower chamber, the upper chamber is communicated with a water pipeline, the lower chamber is communicated with an input pipeline and an output pipeline, and the output pipeline is also communicated with a pressure relief pipeline.

Preferably, the first valve core assembly comprises a guide sleeve arranged in the control chamber, a first corrugated diaphragm fixedly connected with the upper end of the guide sleeve, and a first return spring for realizing automatic return of the first corrugated diaphragm; the first corrugated diaphragm sealing cover is arranged at the upper end of the control cavity, and the first reset spring is sleeved outside the guide sleeve; the upper end of the plug is connected with a second return spring arranged in the first one-way valve chamber; the second valve core assembly comprises a second corrugated diaphragm, a sealing plate arranged in the middle of the second corrugated diaphragm and a third return spring for realizing automatic return of the second corrugated diaphragm; the orifice is disposed through the seal plate and the second convoluted diaphragm.

Preferably, the valve body comprises an upper shell, a middle shell and a lower shell which are arranged from top to bottom in sequence; the control chamber, the first one-way valve chamber and the second one-way valve chamber are all arranged in the upper shell, wherein the upper end of the control chamber is open and is not communicated with the first one-way valve chamber and the second one-way valve chamber, and the lower ends of the first one-way valve chamber and the second one-way valve chamber are open and are communicated with each other; the third one-way valve chamber is formed by combining the lower end part of the middle shell and the upper end part of the lower shell; the control pipeline is arranged in the upper shell and communicated with the control chamber; the input pipeline and the output pipeline are arranged in the lower shell and are respectively communicated with the third one-way valve chamber; the water pipeline is arranged in the middle shell, the lower end of the water pipeline is communicated with the third one-way valve chamber, and the upper end of the water pipeline is communicated with the second one-way valve chamber; the pressure relief pipeline is arranged in the middle shell and the lower shell, the upper end part of the pressure relief pipeline is communicated with the second one-way valve chamber to form a pressure relief opening, and the lower end part of the pressure relief pipeline is communicated with the output pipeline.

Preferably, a clamping groove is formed in the outer wall of the upper end of the upper shell, the end part of the outer edge of the first corrugated membrane is buckled at the upper end of the upper shell, and the end part of the outer side of the first corrugated membrane is limited and fixed with the clamping groove; the end part of the outer edge of the second corrugated membrane is buckled between the step surfaces of the middle shell and the lower shell which are connected in a matched mode.

Preferably, the input port and the output port are both arranged on a quick plug, and the quick plug is locked and fixed on the lower shell through a fixing screw and is respectively used for forming an input pipeline and an output pipeline communicated with the inside of the valve body.

Preferably, the guide sleeve is a POM (polyoxymethylene) part, a permanent magnet is fixed at the upper end of the guide sleeve, and a magnetic ejector pin is fixed at the upper end of the plug; the first return spring and the second return spring are made of non-magnetic stainless steel springs.

Preferably, the guide sleeve is made of a magnetic stainless steel piece, and a magnetic thimble is fixed at the upper end of the plug; the first return spring and the second return spring are made of non-magnetic stainless steel springs.

Preferably, the guide sleeve is of a hollow structure with an opening at the lower end, a guide groove for inserting and matching the lower end of the guide sleeve is formed in the lower end face of the control chamber, and a vent groove is formed in the side wall of the guide groove.

Preferably, the plug and the thimble are in clearance fit with the inner wall of the first one-way valve chamber.

Preferably, a slender insert rod is fixed at the upper end of the upper chamber, and the insert rod is arranged along the vertical direction and inserted into the throttling hole.

Preferably, the lower end of the sealing plate is provided with a sealing head, the sealing head is in interference fit with the end part of the inner side of the output pipeline and can move to the end part of the output pipeline along the motion direction to realize the disconnection of the output pipeline and the input pipeline.

Compared with the prior art, the utility model has the advantages that:

(1) the utility model is mainly applied to the vacuum toilet, and the open-close control technology is absorbed by the pneumatic control magnet, so that the open-close force of the pneumatic control water valve control plug can not be influenced by the water pressure, and the applicable water pressure change range is large, and the hydraulic pressure fluctuation of each household in rural areas is large; meanwhile, aiming at the overall structure, the control chamber is independently arranged, liquid entering from the input pipeline and the water pipeline cannot enter the control chamber, and further other devices connected with the control chamber cannot break down, so that the problem that water pollutes other devices does not exist.

(2) Overall structure simple to operate, lateral wall department only is provided with control mouth, input port and delivery outlet, and wherein the input port all adopts quick connector to realize with valve body fixed connection with the delivery outlet, and the installation is firm reliable, and quick connector's setting also makes the mounting means more convenient simultaneously.

(3) The structure easy maintenance because first ripple diaphragm and second ripple diaphragm all adopt the mode and the valve body fixed connection of lock, rather than adopting the sealing member to carry out the thread tightening formula and connecting, therefore use part small in quantity, compact structure, easy dismounting, and then the maintenance of being convenient for.

(4) Appearance structure is generous pleasing to the eye uncomplicated, compact structure, small and exquisite light, and wherein a large amount of parts can adopt injection moulding process to make, further increases the light, realizes that single product transportation cost is low.

Drawings

The invention will be further described with reference to the following drawings and examples:

fig. 1 is a schematic view of an external structure of a pneumatic magnetic on-off water valve according to the present invention;

fig. 2 is a cross-sectional view of a pneumatic control magnetic on-off water valve according to the present invention;

fig. 3 is a cross-sectional view of the valve body of the present invention;

FIG. 4 is a cross-sectional view of the upper, middle and lower shells of the present invention;

fig. 5 is a schematic view of the arrangement structure of the first valve core assembly and the plug of the present invention;

fig. 6 is a schematic diagram illustrating an arrangement structure of the second valve spool assembly according to the present invention;

fig. 7 is a cross-sectional view of the sealing plate of the present invention;

fig. 8 is a cross-sectional view of the pneumatic magnetic on-off water valve of the present invention in a non-operating state;

fig. 9 is a sectional view of the pneumatic magnetic on-off water valve of the present invention in an operating state.

Wherein: 1. a valve body;

11. the device comprises an upper shell, a middle shell, a lower shell, a quick connector, a control pipeline, an input pipeline, a control pipeline, an output pipeline, a water pipeline, a pressure relief pipeline and a control pipeline, wherein the upper shell is 12, the middle shell is 13, the lower shell is 14, the quick connector is 15, the control pipeline is 16, the input pipeline is 17, the output pipeline is 18, the water pipeline is 19, and the pressure relief pipeline is 19;

151. a control port 161, an input port 171, an output port 191 and a pressure relief port;

101. a control chamber 102, a first check valve chamber 103, a second check valve chamber 104, a third check valve chamber 1041, an upper chamber 1042, and a lower chamber;

2. a first valve core assembly;

21. the guide sleeve 22, the first corrugated diaphragm 23, the first return spring 24, the permanent magnet 25, the guide groove 26 and the vent groove;

3. a plug;

31. a thimble 32 and a second return spring;

4. a second spool assembly;

41. a second corrugated diaphragm 42, a sealing plate 43, a third return spring 44 and an inserted rod;

421. seal head, 422, orifice.

Detailed Description

The following detailed description is made in conjunction with specific embodiments of the present invention:

as shown in fig. 1 and fig. 2, a pneumatic magnetic on-off water valve includes a valve body 1, a control pipeline 15, an input pipeline 16, an output pipeline 17, and a control actuator for implementing on-off of the input pipeline 16 and the output pipeline 17, the control pipeline 15, the input pipeline 16, the output pipeline 17, and the control actuator being disposed inside the valve body 1; in brief, the outer wall of the valve body 1 is provided with a control port 151 which is communicated with the control pipeline 15 and intermittently filled with air or forms vacuum, an input port 161 which is communicated with the input pipeline 16, and an output port 171 which is communicated with the output pipeline 17; a water pipeline 18 and a pressure relief pipeline 19 are also arranged in the valve body 1; the control actuating mechanism comprises a first valve core assembly 2, an end cap 3 and a second valve core assembly 4; the first valve core assembly 2 is lifted through controlling pressure change in the pipeline 15 and drives the plug 3 to move synchronously; the plug 3 is arranged between the water pipeline 18 and the pressure relief pipeline 19, controls the on-off of the water pipeline 18 and the pressure relief pipeline 19, and realizes the change of the pressure difference between the upper end and the lower end of the second valve core assembly 4; the second valve core assembly 4 is arranged between the input pipeline 16 and the output pipeline 17, and the input pipeline 16 and the output pipeline 17 are switched on and off by realizing lifting movement through pressure difference change.

More specifically, as shown in fig. 3 and 4, the valve body 1 includes an upper housing 11, a middle housing 12 and a lower housing 13, which are sequentially arranged from top to bottom; the valve body 1 comprises a control chamber 101, a first one-way valve chamber 102, a second one-way valve chamber 103 and a third one-way valve chamber 104 which are coaxial and arranged in sequence; the control chamber 101, the first check valve chamber 102 and the second check valve chamber 103 are all arranged in the upper shell 11, the upper end of the control chamber 101 is open and is not communicated with the first check valve chamber 102 and the second check valve chamber 103, and the lower ends of the first check valve chamber 102 and the second check valve chamber 103 are open and are communicated with each other; the third check valve chamber 104 is formed by combining the lower end of the middle shell 12 and the upper end of the lower shell 13; the control pipeline 15 is arranged in the upper shell 11 and communicated with the control chamber 101; the input pipeline 16 and the output pipeline 17 are arranged in the lower shell 13 and are respectively communicated with the third one-way valve chamber 104, the input port 161 and the output port 171 are both arranged on the quick-connection plug 14, the quick-connection plug 14 is locked and fixed on the lower shell 13 through a fixing screw and is respectively used for forming the input pipeline 16 and the output pipeline 17 which are communicated with the interior of the valve body 1; the water passage pipe 18 is arranged in the middle shell 12, the lower end of the water passage pipe is communicated with the third one-way valve chamber 104, and the upper end of the water passage pipe is communicated with the second one-way valve chamber 103; the pressure relief pipeline 19 is arranged in the middle shell 12 and the lower shell 13, the upper end part of the pressure relief pipeline is communicated with the second one-way valve cavity 103 to form a pressure relief opening 191, and the lower end part of the pressure relief pipeline is communicated with the output pipeline 17.

As shown in connection with fig. 2, the first valve core assembly 2 is disposed in a control chamber 101, the control chamber 101 being in communication with the control line 15; the plug 3 is arranged in the first one-way valve chamber 102 and can movably extend into the second one-way valve chamber 103, and the second one-way valve chamber 103 is communicated with the pressure relief pipeline 19 and the water pipeline 18; the second spool assembly 4 is disposed in the third check valve chamber 104 and divides the third check valve chamber 104 into an upper chamber 1041 and a lower chamber 1042, an orifice 422 is disposed between the upper chamber 1041 and the lower chamber 1042, the upper chamber 1041 is communicated with the water pipe 18, the lower chamber 1042 is communicated with the input pipe 16 and the output pipe 17, and the output pipe 17 is further communicated with the pressure relief pipe 19.

As shown in fig. 5, the first valve core assembly 2 includes a guide sleeve 21 disposed in the control chamber 101, a first bellow diaphragm 22 fixedly connected with an upper end of the guide sleeve 21, and a first return spring 23 for automatically returning the first bellow diaphragm 22; the first corrugated diaphragm 22 is arranged at the upper end of the control chamber 101 in a sealing manner, a clamping groove is formed in the outer wall of the upper shell 11 connected with the first corrugated diaphragm 22, the end part of the outer edge of the first corrugated diaphragm 22 is buckled at the upper end of the upper shell 11, and the end part of the outer side of the first corrugated diaphragm is limited and fixed with the clamping groove; the first return spring 23 is sleeved outside the guide sleeve 21, the guide sleeve 21 is of a hollow structure with an opening at the lower end, a guide groove 25 for inserting and matching the lower end of the guide sleeve 21 is formed in the lower end face of the control chamber 101, and a vent groove 26 is formed in the side wall of the guide groove 25, so that the lower end of the guide sleeve 21 can freely move in the guide groove 25; an ejector pin 31 is fixed at the upper end of the plug 3 and is connected with a second return spring 32 arranged in the first one-way valve cavity 102, and the plug 3 and the ejector pin 31 are in clearance fit with the inner wall of the first one-way valve cavity 102; wherein, the first return spring 23 and the second return spring 32 are both made of non-magnetic stainless steel springs.

The following two types of structures are mainly realized in relation to the synchronous motion of the first valve core assembly 2 driving plug 3: firstly, the guide sleeve 21 is a POM part, the upper end of the guide sleeve is fixed with a permanent magnet 24, and an ejector pin 31 fixed at the upper end of the plug 3 has magnetism; secondly, the guide sleeve 21 is made of magnetic stainless steel, and a magnetic thimble 31 is fixed at the upper end of the plug 3.

As shown in fig. 6, the second spool assembly 4 includes a second convoluted diaphragm 41, a seal plate 42 installed in the middle of the second convoluted diaphragm 41, and a third return spring 43 for automatically returning the second convoluted diaphragm 41; wherein, the outer edge end of the second corrugated diaphragm 41 is buckled between the step surfaces of the middle shell 12 and the lower shell 13 which are matched and connected; as shown in fig. 7, a sealing head 421 is disposed at the lower end of the sealing plate 42, the sealing head 421 is in interference fit with the end portion of the inner side of the output pipeline 17, and can move to the end portion of the output pipeline 17 along the moving direction to realize the disconnection between the output pipeline 17 and the input pipeline 16; the orifice 422 is provided through the seal plate 42 and the second bellows plate 41, an elongated insertion rod 44 is fixed to the upper end of the upper chamber 1041, and the insertion rod 44 is provided in the vertical direction and inserted into the orifice 422.

The utility model discloses a theory of operation specifically as follows, wherein, the synchronous motion implementation structure of first case subassembly 2 and end cap 3 uses guide sleeve 21 upper end fixed permanent magnet 24 as an example:

first, in the non-operating state, the control port 151 is connected to air:

as shown in fig. 8, in this state, the air in the control chamber 101 is equal to the external air pressure, that is, the air pressures at the upper end and the lower end of the first bellows 22 are equal, the first bellows 22 is reset and lifted by the spring force of the first return spring 23, and a larger distance is generated between the permanent magnet 24 and the thimble 31, so that the magnetic attraction force generated by the permanent magnet 24 to the thimble 31 is smaller, and the spring force of the second return spring 32 is greater than the magnetic attraction force to press the thimble 31 and the plug 3 against the pressure relief opening 191.

Water entering the input port 161 enters the lower chamber 1042 through the input pipeline 16 and enters the upper chamber 1041, the water pipeline 18 and the second check valve chamber 103 through the throttle hole 422, and at this time, because the pressure relief port 191 is closed, the water entering the input port 161 cannot enter the pressure relief pipeline 19; since the plug 3 and the thimble 31 are in clearance fit with the inner wall of the first check valve cavity 102, water enters the first check valve cavity 102 above the thimble 31.

The upper and lower ends of the second corrugated diaphragm 41 are filled with water, and the second corrugated diaphragm moves downward under the action of the third return spring 43 and partial water pressure, and the sealing head 421 at the lower end of the sealing plate 42 seals the end of the inner side of the output pipeline 17, so that the communication between the input pipeline 16 and the output pipeline 17 is cut off, and the pneumatic control water valve is closed.

In this state, the air flow path in the space communicating with the control port 151 is shown by the broken line in fig. 8, and the water flow path entering from the input port 161 is shown by the solid line in fig. 8.

Second, in the operating state, the control port 151 is evacuated:

as shown in fig. 9, in this state, a pressure difference is generated between the vacuum in the control chamber 101 and the external air pressure, so that the first bellows diaphragm 22 bears a downward acting force, and further gradually descends against the action of the first return spring 23, the permanent magnet 24 also descends along with the guide sleeve 21, when the pressure difference reaches the lowest point, the magnetic attraction force generated by the permanent magnet 24 gradually increases, until the magnetic attraction force overcomes the spring force of the second return spring 32, the thimble 31 attracts the plug 3 and moves upward, so that the plug 3 is separated from the pressure relief opening 191, and the low pressure of the output port 171 is conducted with the water pressure of the upper chamber 1041, thereby realizing rapid pressure relief.

At this time, because the water in the lower chamber 1042 cannot enter the upper chamber 1041 due to the throttling action of the throttle hole 422, the water pressure in the upper chamber 1041 is smaller than the water pressure in the lower chamber 1042, the second bellow diaphragm 41 is subjected to an upward pressure, and the pressure overcomes the spring force of the third return spring 43, so that the second bellow diaphragm 41 drives the sealing plate 42 to separate from the inner end of the output pipeline 17, and further the input pipeline 16 and the output pipeline 17 are communicated, and the water entering from the input port 161 can be freely discharged into the downstream output port 171; at the same time, as the second bellows diaphragm 41 moves upward, the accumulated water in the upper chamber 1041 is discharged to the output port 171 through the relief line 19.

In this state, water entering the input port 161 flows out to the output port 171 along the broken line in fig. 9, and accumulated water in the upper chamber 1041 is discharged to the output port 171 through the pressure relief pipe 19 along the solid line in fig. 9.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. It is obvious to a person skilled in the art that the invention is not limited to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention, and that the embodiments are therefore to be considered in all respects as exemplary and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (12)

1. The utility model provides a formula water valve is closed to gas accuse magnetism, its characterized in that: the control valve comprises a valve body, a control pipeline, an input pipeline, an output pipeline and a control actuating mechanism, wherein the control pipeline, the input pipeline and the output pipeline are arranged in the valve body; the outer wall of the valve body is provided with a control port which is communicated with the control pipeline and intermittently introduces air or forms vacuum, an input port which is communicated with the input pipeline, and an output port which is communicated with the output pipeline; a water pipeline and a pressure relief pipeline are also arranged in the valve body; the control execution mechanism comprises a first valve core assembly, a plug and a second valve core assembly; the first valve core assembly is lifted by controlling pressure change in the pipeline and drives the plug to move synchronously; the plug is arranged between the water pipeline and the pressure relief pipeline, the on-off of the water pipeline and the pressure relief pipeline is controlled, and the pressure difference change of the upper end and the lower end of the second valve core component is realized; the second valve core assembly is arranged between the input pipeline and the output pipeline, and the input pipeline and the output pipeline are switched on and off by realizing lifting motion through pressure difference change.

2. The pneumatically-controlled magnetic on-off water valve of claim 1, wherein: the valve body comprises a control chamber, a first one-way valve chamber, a second one-way valve chamber and a third one-way valve chamber which are coaxial and arranged in sequence; the first valve core assembly is arranged in the control chamber, and the control chamber is communicated with the control pipeline; the plug is arranged in the first one-way valve chamber and can movably extend into the second one-way valve chamber, and the second one-way valve chamber is communicated with the pressure relief pipeline and the water pipeline; the second valve core assembly is arranged in the third one-way valve chamber and divides the third one-way valve chamber into an upper chamber and a lower chamber, a throttling hole is formed between the upper chamber and the lower chamber, the upper chamber is communicated with a water pipeline, the lower chamber is communicated with an input pipeline and an output pipeline, and the output pipeline is also communicated with a pressure relief pipeline.

3. The pneumatically-controlled magnetic on-off water valve of claim 2, wherein: the first valve core assembly comprises a guide sleeve arranged in the control chamber, a first corrugated diaphragm fixedly connected with the upper end of the guide sleeve and a first return spring for realizing automatic return of the first corrugated diaphragm; the first corrugated diaphragm sealing cover is arranged at the upper end of the control cavity, and the first reset spring is sleeved outside the guide sleeve; the upper end of the plug is connected with a second return spring arranged in the first one-way valve chamber; the second valve core assembly comprises a second corrugated diaphragm, a sealing plate arranged in the middle of the second corrugated diaphragm and a third return spring for realizing automatic return of the second corrugated diaphragm; the orifice is disposed through the seal plate and the second convoluted diaphragm.

4. The pneumatically-controlled magnetic on-off water valve of claim 3, wherein: the valve body comprises an upper shell, a middle shell and a lower shell which are arranged from top to bottom in sequence; the control chamber, the first one-way valve chamber and the second one-way valve chamber are all arranged in the upper shell, wherein the upper end of the control chamber is open and is not communicated with the first one-way valve chamber and the second one-way valve chamber, and the lower ends of the first one-way valve chamber and the second one-way valve chamber are open and are communicated with each other; the third one-way valve chamber is formed by combining the lower end part of the middle shell and the upper end part of the lower shell; the control pipeline is arranged in the upper shell and communicated with the control chamber; the input pipeline and the output pipeline are arranged in the lower shell and are respectively communicated with the third one-way valve chamber; the water pipeline is arranged in the middle shell, the lower end of the water pipeline is communicated with the third one-way valve chamber, and the upper end of the water pipeline is communicated with the second one-way valve chamber; the pressure relief pipeline is arranged in the middle shell and the lower shell, the upper end part of the pressure relief pipeline is communicated with the second one-way valve chamber to form a pressure relief opening, and the lower end part of the pressure relief pipeline is communicated with the output pipeline.

5. The pneumatically-controlled magnetic on-off water valve of claim 4, wherein: the outer wall of the upper end of the upper shell is provided with a clamping groove, the end part of the outer edge of the first corrugated diaphragm is buckled at the upper end of the upper shell, and the end part of the outer side of the first corrugated diaphragm is limited and fixed with the clamping groove; the end part of the outer edge of the second corrugated membrane is buckled between the step surfaces of the middle shell and the lower shell which are connected in a matched mode.

6. The pneumatically-controlled magnetic on-off water valve of claim 4, wherein: the input port and the output port are both arranged on the quick-connection plug, and the quick-connection plug is locked and fixed on the lower shell through a fixing screw and is respectively used for forming an input pipeline and an output pipeline which are communicated with the interior of the valve body.

7. The pneumatically-controlled magnetic on-off water valve of claim 3, wherein: the guide sleeve is a POM (polyoxymethylene) part, a permanent magnet is fixed at the upper end of the guide sleeve, and a magnetic ejector pin is fixed at the upper end of the plug; the first return spring and the second return spring are made of non-magnetic stainless steel springs.

8. The pneumatically-controlled magnetic on-off water valve of claim 3, wherein: the guide sleeve is made of a magnetic stainless steel piece, and a magnetic thimble is fixed at the upper end of the plug; the first return spring and the second return spring are made of non-magnetic stainless steel springs.

9. An air-operated magnetic on-off water valve according to claim 7 or 8, characterized in that: the guide sleeve is of a hollow structure with an opening at the lower end, a guide groove for the insertion and connection of the lower end of the guide sleeve is formed in the lower end face of the control cavity, and a vent groove is formed in the side wall of the guide groove.

10. An air-operated magnetic on-off water valve according to claim 7 or 8, characterized in that: and the plug and the thimble are in clearance fit with the inner wall of the first one-way valve chamber.

11. The pneumatically-controlled magnetic on-off water valve of claim 3, wherein: and a slender insert rod is fixed at the upper end of the upper chamber, is arranged along the vertical direction and is inserted into the throttling hole.

12. The pneumatically-controlled magnetic on-off water valve of claim 3, wherein: the lower end of the sealing plate is provided with a sealing head, the sealing head is in interference fit with the end part of the inner side of the output pipeline and can move to the end part of the output pipeline along the motion direction to realize the disconnection of the output pipeline and the input pipeline.

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