A multifunctional valve assembly structure

Abstract

The present invention discloses a multifunctional valve component structure, wherein a diaphragm cover, a diaphragm and a diaphragm protection bracket cooperate to form a pressure balance chamber to keep the pressure in the direction of the gas inlet or liquid inlet balanced therewith so that the valve is in a closed state; a pressure relief guide hole is arranged on the diaphragm cover, and the pressure relief guide hole is connected with the liquid inlet or the gas inlet of the pressure relief control component, so that the pressure relief control component releases the pressure of the pressure balance chamber between the diaphragm cover and the diaphragm through its own pressure relief switch, and because the pressure in the direction of the gas inlet or the liquid inlet is greater than the pressure in the pressure balance chamber, the diaphragm is pushed toward the diaphragm cover to achieve the effect of opening the valve, and the top of the diaphragm protection bracket supports the expansion and contraction surface of the diaphragm, and the diaphragm will not be deformed and damaged due to the pressure extrusion of the pressure balance chamber, thereby greatly extending the service life of the diaphragm; and a check device is installed inside the pilot component of the diaphragm to solve the problem of siphon backflow.

Description

Technical Field

[0001] The present invention relates to the technical field of gas and liquid valve control structures, and in particular to a multifunctional valve component structure. Background Art

[0002] There are many types of gas and liquid valves on the market, and their structures are relatively complex. In particular, water control valves have water hammer during the valve closing process, which causes great damage to the pipeline and produces annoying noise after long-term use. In some special cases, due to the large height difference of high-rise buildings, siphoning is prone to occur during pipeline maintenance, causing the pipes connected to the toilet to siphon toilet sewage back into the drinking water pipe, causing drinking water pollution. Because most valves on the market have complex structures and many parts, the material and production costs increase, which indirectly leads to a waste of social resources.

[0003] In order to solve the siphon problem, the existing technology usually adds a one-way valve device at the water outlet of the valve. This device not only has poor stability, but is also prone to failure when impurities are stuck, resulting in a larger product size, and also affects the water flow rate and cannot achieve the ideal flushing effect.

[0004] Due to the structural defects of traditional valves, the closing time of the valve is uncontrollable and the ideal delayed closing time cannot be achieved, which requires higher processing technology and cost when producing delay valves. Due to the structural defects of traditional valves, the pressure balance chamber of the valve forms a large pressure stretching and extrusion deformation on the diaphragm when the valve is closed. Because the diaphragm has no protection or support, the diaphragm is infinitely stretched and squeezed, which makes the diaphragm easy to tear or age, causing the product to need frequent maintenance or repair, greatly wasting human and material resources and other social resources. Traditional valves have a simple filtering structure, which makes it easy for the gas or liquid holes to be blocked, causing certain valve control components or pressure relief components to be blocked. For example, the solenoid valves and mechanical switch valves used in conjunction with them are blocked by dirt or impurities, affecting the switch function, and the water holes are blocked, causing product functions to fail or the flow rate to decrease, etc.

[0005] In summary, traditional valves have complex structures, many parts, high processing and production requirements, large sizes and other raw materials, which lead to production difficulties, unstable product performance, short product life, large product size, troublesome after-sales maintenance, etc., resulting in waste of human, material and other social resources. In order to solve the above problems, the present invention designs a multifunctional valve assembly structure. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention aims to provide a multifunctional valve assembly structure with reasonable structural design, low cost, high production efficiency, and greatly saving social resources such as manpower and material resources.

[0007] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a multifunctional valve assembly structure, including a diaphragm cover, a diaphragm, a pilot assembly, a valve core filter device, a diaphragm protection bracket, a check device, a pressure balance chamber and a pressure relief control assembly, wherein the diaphragm cover, the diaphragm and the diaphragm protection bracket cooperate to form a pressure balance chamber to keep the pressure in the direction of the gas or liquid inlet balanced with it so that the valve is in a closed state; a pressure relief guide hole is provided on the diaphragm cover, and the pressure relief guide hole is connected to the liquid inlet or the gas inlet of the pressure relief control assembly, so that the pressure relief control assembly releases the pressure in the pressure balance chamber between the diaphragm cover and the diaphragm through its own pressure relief switch, because the pressure in the direction of the gas or liquid inlet is greater than the pressure balance The pressure in the pressure balance chamber pushes the diaphragm toward the diaphragm valve cover to achieve the effect of opening the valve. When the pressure relief control component closes the pressure relief diversion hole of the pressure balance chamber between the diaphragm and the diaphragm valve cover, the gas or liquid in the direction of the gas or liquid inlet enters the pressure balance chamber through the pilot hole of the pilot component, thereby slowly pushing the diaphragm toward the gas or liquid inlet. When the pressure balance chamber is filled with gas or liquid, the pressure in the pressure balance chamber and the direction of the gas or liquid inlet are balanced to achieve the effect of closing the valve. The pressure relief hole of the pressure relief control component is connected to the outlet of the diaphragm protection bracket, and a pilot component is arranged on the diaphragm protection bracket. A pilot hole is arranged on the pilot component, and the pilot hole is connected with the pressure balance chamber and the inlet, so that the gas or liquid in the direction of the gas or liquid inlet and the The corresponding pressure can be transmitted to the pressure balance chamber to stabilize the pressure balance in two directions; a valve core filter device fixing position is also provided at the bottom of the pilot assembly, and a valve core filter device is installed at the valve core filter device fixing position. A check device chamber is provided behind the pilot hole. When the anti-siphon function is required, a check device needs to be placed in the check device chamber. When siphoning occurs, the suction force in the siphoning direction is opposite to the gas or liquid inlet direction, so the siphon force will suck and pull the diaphragm and the check device toward the gas or liquid inlet, thereby causing the bottom of the diaphragm to be close to the gas or water sealing surface of the diaphragm bracket. The check device in the check device chamber is one-way for air or liquid, so it will close the pilot hole or the check cavity under the reaction force, thereby preventing the gas in the outlet direction from flowing out. Or liquid reflux, to achieve the effect of anti-siphon; the check device cavity is matched with the diaphragm guide column on the diaphragm cover, and the pilot assembly is installed in the diaphragm pilot assembly fixing hole of the diaphragm, and they are assembled into a whole; a plane is provided at the bottom inlet direction of the diaphragm protection bracket to fit the bottom of the diaphragm, and the top of the diaphragm protection bracket is the same or similar in shape to the stretch film of the diaphragm, so as to protect the diaphragm from being squeezed and stretched in the direction of the gas outlet or liquid outlet and damaged, and an outlet is provided on the side of the diaphragm protection bracket. When the diaphragm moves toward the pressure balance chamber, the side outlet of the diaphragm protection bracket is connected with the inlet of the diaphragm protection bracket, and the medium (gas or liquid) is discharged from the gas inlet or liquid inlet through the gas outlet or liquid outlet on the side of the diaphragm bracket;A step is provided on the upper side of the diaphragm protection bracket, which is used for sealing between the diaphragm, the diaphragm bracket and the diaphragm valve cover. The step cooperates with the diaphragm cover through the diaphragm sealing position on the diaphragm to seal the pressure balance cavity. A diaphragm guide column is provided at the center of the diaphragm cover to cooperate with the check device cavity of the diaphragm pilot assembly, so as to fix and guide the diaphragm so that it will not swing left and right when switching. ;

[0008] A plurality of diaphragm protection bracket support columns are evenly distributed on the outer side of the lower part of the diaphragm protection bracket.

[0009] The inner bottom of the diaphragm protection bracket is provided with a diaphragm protection bracket sealing surface which matches the diaphragm sealing bottom surface of the diaphragm.

[0010] The inlet is a gas inlet or a liquid inlet; the outlet is a gas outlet or a liquid outlet.

[0011] The diaphragm is formed by integrally processing using elastic materials such as silicone or rubber, and a pilot component with a pilot hole is installed or inlaid in the center of the diaphragm.

[0012] A diaphragm guide column is arranged at the center of the inner cavity at the bottom of the diaphragm cover, and the diaphragm guide column cooperates with the non-return device cavity of the central assembly part or the inlay pilot assembly of the diaphragm.

[0013] The top of the diaphragm center component or the inlay pilot component is provided with a gas or liquid through-hole.

[0014] The pressure relief guide hole of the diaphragm cover is communicated with the pressure balance chamber.

[0015] The present invention changes the direction of the gas or liquid inlet of the traditional valve so that the pressure balance chamber and the pressure of the gas or liquid inlet are relatively offset, reducing or eliminating the impact force caused by the rapid high-pressure closure due to lack of pressure at the center position of the water inlet direction of the traditional valve (the drain outlet is in a buckled state and there is an empty pressure position), achieving the effect of slowly closing the valve, thereby reducing or solving the impact force caused by the interruption of the inertial direction of the pipeline due to the rapid closing of the valve (that is, the water hammer or water hammer often referred to in water valves).

[0016] The present invention controls the closing time of the valve by adjusting the size of the water hole (pilot hole) between the gas inlet or liquid inlet and the pressure balance chamber; the present invention places the gas inlet or liquid inlet at the center of the valve component diaphragm, the gas outlet or liquid outlet at the side of the valve component diaphragm, and then places a check device (which can be a one-way valve, soft rubber particles, soft rubber pads, round glass beads, etc.) at the water hole between the water inlet of the diaphragm and the pressure balance chamber, so that the valve circuit is completely closed when siphoning occurs, thereby achieving the anti-siphoning effect.

[0017] The present invention adds a diaphragm stretching protection surface with a shape similar to or consistent with the diaphragm to the diaphragm bracket to support and protect the diaphragm so that the pressure extrusion generated by the pressure balance chamber when the valve is closed will not cause significant deformation or stretching, thereby extending the life of the diaphragm.

[0018] The present invention adds a filtering device at the front end of the gas or liquid inlet of the diaphragm and the gas or liquid hole of the pressure balance chamber to protect the gas or liquid hole, the control component and other supporting pressure relief components from being blocked or affecting the normal switching function of the valve due to impurities or dirt in the medium used, thereby greatly improving the stability of the valve and the service life.

[0019] The present invention has the following beneficial effects:

[0020] 1. The valve of the present invention has a simple structure and few parts, thus achieving the effect of low cost and high production speed, greatly saving social resources such as manpower and material resources;

[0021] 2. The valve of this valve closes slowly, thereby reducing the impact and destructive force caused by the pressure difference inside the pipeline when the valve is closed quickly, effectively protecting the pipeline and reducing the noise when the valve is closed;

[0022] 3. The present invention converts a two-way circuit into a one-way circuit. Without changing the product size, the traditional siphon effect can be solved by only solving the one-way check effect of the gas or liquid hole between the valve gas or liquid inlet and the valve pressure balance chamber, thereby greatly saving the material cost and labor cost of production, and reducing the gas or liquid pollution of the pipeline caused by siphoning, especially the pollution and waste of water resources;

[0023] 4. The valve structure of the present invention adds a protective surface similar to or consistent with the shape of the diaphragm to the diaphragm bracket that matches the diaphragm to support and protect the diaphragm. The pressure extrusion generated in the pressure balance chamber when the valve is closed will not cause significant deformation or stretching, thereby extending the life of the diaphragm and greatly reducing the waste of human and material resources and other social resources caused by valve maintenance and repair;

[0024] 5. The valve structure of the present invention adds a filter device at the front end of the gas or liquid inlet of the diaphragm and the gas or liquid hole of the pressure balance chamber to protect the gas or liquid hole, the control component and other supporting pressure relief components from being blocked or affecting the normal switching function of the valve due to impurities or dirt in the medium used, thereby greatly improving the stability and service life of the valve.

[0025] 6. The valve structure of the present invention has a broad prospect for valve application in gas or liquid transportation because of its simple design, few production parts, small product size, good stability, and solving various design defects of traditional valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments;

[0027] Figure 1 It is a structural cross-sectional view of the present invention;

[0028] Figure 2 It is a stereogram (oblique top view) of the present invention;

[0029] Figure 3 It is a stereoscopic view (oblique bottom view) of the present invention;

[0030] Figure 4 It is a cross-sectional structural diagram of the valve of the present invention when it is in a closed state;

[0031] Figure 5 It is a cross-sectional structural diagram of the valve of the present invention when it is in an open state;

[0032] Figure 6 It is a cross-sectional structural diagram of the pipeline of the present invention when siphoning occurs. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] Reference Figure 1-3The present specific implementation adopts the following technical scheme: a multifunctional valve assembly structure, including a diaphragm cover 1, a diaphragm 2, a pilot assembly 3, a valve core filter device 4, a diaphragm protection bracket 5, a check device 6, a pressure balance chamber 7 and a pressure relief control assembly 8, wherein the diaphragm cover 1 is provided with a diaphragm cover pressure relief guide hole 11, the diaphragm cover pressure relief guide hole 11 is connected to the gas inlet or liquid inlet of the matching pressure relief control assembly 8, and the pressure relief hole 12 of the pressure relief control assembly 8 is connected to the outlet 52 of the diaphragm protection bracket 5; the diaphragm cover 1 is also provided with a diaphragm guide column 13, the diaphragm guide column 1 3 cooperates with the check device cavity 32 of the pilot assembly 3; the pilot assembly 3 is installed in the diaphragm pilot assembly fixing hole 22 of the diaphragm 2, and they are assembled into a whole; the top of the pilot assembly 3 is provided with one or more gas or liquid ports 34, and the pilot assembly 3 is provided with a pilot hole 31, and the pilot hole 31 is connected with the bottom of the pilot assembly 3 and the check device cavity 32 of the pilot assembly 3; the bottom of the pilot assembly 3 is also provided with a valve core filter device fixing position 33, and the valve core filter device fixing position 33 is equipped with a valve core filter device 4, which can effectively filter the gas or liquid inlet Impurities, prevent clogging of the pilot hole 31 and the supporting pressure relief control component 8; the diaphragm 2 is provided with a diaphragm sealing position 21, which cooperates with the diaphragm cover 1 and the diaphragm bracket 5 to seal the pressure balance chamber 7; the check device cavity 32 of the pilot component 3 is provided with a check device 6, and the check device 6 is an optional component. The component is installed when the anti-siphon function is required, and it is not required to be installed when the anti-siphon function is not required; the bottom of the diaphragm 2 is pressed on the diaphragm protection bracket 5, and the opening and closing of the valve is achieved through the pressure balancing force. The top of the diaphragm protection bracket cooperates with the bottom surface of the stretching surface of the diaphragm 2, and the shape Similar or consistent, (the top of the diaphragm protection bracket 5 is provided with a diaphragm stretching film protection surface 55 which is similar or the same in shape as the stretching film 24 of the diaphragm 2), so as to support and protect the diaphragm 2 from being deformed and stretched due to the pressure increase in the pressure balance chamber; the lower side of the diaphragm protection bracket 5 is provided with a diaphragm protection bracket support column 53, which protects the diaphragm protection bracket from being deformed and damaged or affecting the sealing effect due to the pressure extrusion of the pressure balance chamber 7; the side of the diaphragm protection bracket is also provided with an outlet 52, and the outlet (gas outlet or liquid inlet) 52 is connected to the inlet (gas inlet or liquid inlet) 51 of the diaphragm protection bracket 5.

[0035] like Figure 4As shown, the opening and closing of the valve is controlled by the pressure of the pressure balance chamber 7 and the medium (gas or liquid) used through the pressure relief guide hole of the diaphragm cover through the pressure relief control component 8. When the pressure relief control component 8 is in the open state (pressure relief state), the pressure in the pressure balance chamber 7 becomes smaller. At this time, the pressure of the gas inlet or liquid inlet of the diaphragm protection bracket 5 is greater than the pressure of the pressure balance chamber 7. Therefore, the pressure of the gas inlet or liquid inlet will push or squeeze the diaphragm 2 toward the diaphragm cover 1. When the diaphragm sealing bottom surface 23 of the diaphragm 2 leaves the sealing surface 54 of the diaphragm protection bracket, the gas outlet or liquid outlet of the diaphragm protection bracket is connected with the gas inlet or liquid inlet of the diaphragm protection bracket, and the used medium (gas or liquid) flows out from the inlet of the valve seat through the gas inlet or liquid inlet 51 of the diaphragm protection bracket and the gas outlet or liquid outlet of the diaphragm protection bracket.

[0036] like Figure 5 As shown, when the pressure of the control pressure balance chamber 7 is released through the pressure relief control assembly 8, the valve is in an open state. When the pressure relief control assembly 8 is in a closed state, the pressure of the pressure balance chamber 7 is locked. Because the medium (gas or liquid) enters the pressure balance chamber 7 through the pilot hole 31 of the pilot assembly 3 of the diaphragm 2, the medium and pressure slowly fill the pressure balance chamber 7, thereby pushing the diaphragm toward the gas or liquid inlet. Because most of the center area of ​​the diaphragm sealing bottom surface 23 of the diaphragm 2 is facing the gas or liquid inlet, the diaphragm 2 can only be pushed toward the gas or liquid inlet according to the medium (gas or liquid) passing through the pilot hole 31 when pushing toward the gas or liquid inlet. The pressure balancing chamber 7 is slowly filled with the volume of the diaphragm 2 until the diaphragm sealing bottom surface 23 of the diaphragm 2 completely presses the diaphragm protection bracket sealing surface 54 to close the valve, thereby achieving slow closing of the valve, reducing or eliminating the inertial reaction force caused by the sudden cessation of the inertial motion of the fluid (gas or liquid and other working media) when the valve is quickly closed, such as the water hammer (water hammer) generated when the working medium is water. In this way, the effect of delayed closing of the valve is achieved. Because the filling medium or pressure of the pressure balancing chamber 7 flows into through the pilot hole 31, the delay time of the valve closing can be controlled by adjusting the size of the pilot hole 31.

[0037] like Figure 6As shown in the figure, when a siphon effect occurs in the pipeline that conveys the medium to the valve, the medium used will flow back (that is, the original valve inlet and outlet are interchanged, so that the medium used returns from the outlet to the inlet). Because the diaphragm sealing bottom surface 23 of the diaphragm 2 completely covers the diaphragm protection bracket sealing surface 54, the entire diaphragm combination forms a one-way valve effect. When the siphon occurs, the siphon force of the pipeline passes through the inlet of the valve through the gas or liquid inlet 51 of the diaphragm protection bracket 5 and is sucked toward the inlet direction of the valve seat, so that the diaphragm sealing bottom surface 23 is as close to the diaphragm protection bracket as when the valve is closed. The frame sealing surface 54, because the pilot assembly 3 of the diaphragm 2 is provided with a pilot hole 31, the siphon force will suck the medium in the outlet direction of the pressure balance chamber 7 and the matching valve seat through the pressure relief hole 12, and then through the diaphragm cover pressure relief guide hole back to the pressure balance chamber 7, because the check device cavity 32 at the top of the pilot hole 31 of the pilot assembly 3 of the diaphragm 2 assembly of the valve structure of the present invention is provided with a check device 6, so when the siphon force is generated, the check device 6 plays a check function to prevent the medium from flowing back to the gas inlet or liquid inlet direction through the pilot hole 31, thereby achieving a low-cost, small-volume anti-siphon effect.

[0038] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A multifunctional valve assembly structure, characterized in that: The invention comprises a diaphragm cover (1), a diaphragm (2), a pilot assembly (3), a valve core filter device (4), a diaphragm protection bracket (5), a check device (6), a pressure balance chamber (7) and a pressure relief control assembly (8). The diaphragm cover (1), the diaphragm (2) and the diaphragm protection bracket (5) cooperate to form a pressure balance chamber (7) to keep the pressure in the direction of the gas or liquid inlet balanced with the pressure balance chamber so that the valve is in a closed state. The diaphragm cover (1) is provided with a pressure relief guide hole (11), and the pressure relief guide hole (11) is connected to the liquid inlet or gas inlet of the pressure relief control assembly (8), so that the pressure relief control assembly can adjust the pressure between the diaphragm cover and the diaphragm through its own pressure relief switch. The pressure in the pressure balance chamber is released, and because the pressure in the direction of the gas or liquid inlet is greater than the pressure in the pressure balance chamber, the diaphragm is pushed toward the diaphragm cover to achieve the effect of opening the valve. When the pressure relief control component closes the pressure relief guide hole of the pressure balance chamber between the diaphragm and the diaphragm cover, the gas or liquid in the direction of the gas or liquid inlet enters the pressure balance chamber through the pilot hole of the pilot component, thereby slowly pushing the diaphragm toward the gas or liquid inlet. When the pressure balance chamber is filled with gas or liquid, the pressure in the pressure balance chamber and the pressure in the direction of the gas or liquid inlet are balanced to achieve the effect of closing the valve. The pressure relief hole (12) of the pressure relief control component (8) is connected to the outlet (52) of the diaphragm protection bracket (5). A pilot assembly (3) is provided on the diaphragm protection bracket (5), a pilot hole (31) is provided on the pilot assembly (3), the pilot hole (31) is connected with the pressure balance chamber (7) and the inlet (51), so that the gas or liquid in the gas or liquid inlet direction and the corresponding pressure energy can be transmitted to the pressure balance chamber to stabilize the pressure balance in the two directions; a valve core filter device fixing position (33) is also provided at the bottom of the pilot assembly (3), and the valve core filter device fixing position (33) is equipped with a valve core filter device (4), and a check device chamber (32) is provided behind the pilot hole (31). When a siphon occurs, the suction force in the siphon direction is opposite to the gas or liquid inlet direction, so the siphon The suction force will pull the diaphragm and the check device toward the gas or liquid inlet, thereby causing the bottom of the diaphragm to be in close contact with the gas or water sealing surface of the diaphragm bracket. The check device in the check device cavity is a one-way air or liquid, so it will close the pilot hole or the check cavity under the reaction force, thereby preventing the gas or liquid from flowing back in the outlet direction, achieving an anti-siphon effect; the check device cavity (32) cooperates with the diaphragm guide column (13) on the diaphragm cover (1), and the pilot assembly (3) is installed in the diaphragm pilot assembly fixing hole (22) of the diaphragm (2), and they are assembled into a whole; the top of the pilot assembly (3) is provided with one or more gas or liquid through ports (34);A plane is provided at the bottom inlet direction of the diaphragm protection bracket (5) to fit the bottom of the diaphragm (2); a diaphragm stretch film protection surface (55) is provided at the top of the diaphragm protection bracket (5) and has the same shape as the stretch film (24) of the diaphragm (2); an outlet (52) is provided at the side of the diaphragm protection bracket (5); when the diaphragm moves toward the pressure balance chamber, the side outlet (52) of the diaphragm protection bracket (5) is connected to the inlet (51) of the diaphragm protection bracket (5), and the medium is discharged from the gas inlet or liquid inlet through the outlet at the side of the diaphragm bracket; a step is provided at the upper side of the diaphragm protection bracket (5) for sealing between the diaphragm, the diaphragm bracket and the diaphragm cover; the step is sealed and matched with the diaphragm cover (1) through the diaphragm sealing position (21) on the diaphragm (2) to seal the pressure balance chamber (7). ; 2. A multifunctional valve assembly structure according to claim 1, characterized in that: A plurality of diaphragm protection bracket support columns (53) are evenly distributed on the outer side of the lower portion of the diaphragm protection bracket (5).

3. A multifunctional valve assembly structure according to claim 1, characterized in that: The inner bottom of the diaphragm protection bracket (5) is provided with a diaphragm protection bracket sealing surface (54) which matches the diaphragm sealing bottom surface of the diaphragm (2).

4. A multifunctional valve assembly structure according to claim 1, characterized in that: The inlet (51) is a gas inlet or a liquid inlet; the outlet (52) is a gas outlet or a liquid outlet.

5. A multifunctional valve assembly structure according to claim 1, characterized in that: The diaphragm (2) is integrally formed using elastic materials such as silicone or rubber, and a pilot component (3) with a pilot hole (31) is installed or embedded in the center of the diaphragm (2).

6. A multifunctional valve assembly structure according to claim 1, characterized in that: A non-return device cavity (32) is arranged behind the pilot hole (31), and a non-return device (6) is arranged in the non-return device cavity (32).

7. A multifunctional valve assembly structure according to claim 1, characterized in that: A diaphragm guide column (13) is provided at the center of the bottom inner cavity of the diaphragm cover (1).

8. A multifunctional valve assembly structure according to claim 1, characterized in that: A gas or liquid through-hole (34) is provided on the top of the central component of the diaphragm (2) or the inlay pilot component (3).

9. A multifunctional valve assembly structure according to claim 1, characterized in that: The diaphragm cover pressure relief guide hole (11) is connected to the pressure balance chamber (7).

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