CN111322441A

CN111322441A - Dynamic balance regulating valve

Info

Publication number: CN111322441A
Application number: CN202010250185.7A
Authority: CN
Inventors: 朱翼虎
Original assignee: Tiger Controls Equipment Co ltd
Current assignee: Tiger Controls Equipment Co ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2020-06-23

Abstract

The invention discloses a dynamic balance regulating valve, which comprises a shell with an inlet, an outlet and a valve seat, and a cover body which forms a pressure regulating cavity by enclosing with the side wall of the shell, wherein a flow regulating valve is adapted to one side of the valve seat close to the outlet; the pressure regulating cavity is divided by the diaphragm of the pressure balancing assembly into a first cavity and a second cavity which are respectively communicated with the outlet and the inlet, the elastic piece of the pressure balancing assembly is arranged in the first cavity, and two working ends of the elastic piece are respectively abutted against the shell and the diaphragm; the end part of the pressure regulating valve, which is positioned in the first cavity, is fixedly connected with the diaphragm, and the pressure regulating valve is inserted into a shell for constructing the first cavity, and the insertion end of the pressure regulating valve forming sliding fit is arranged in the shell on one side of the valve seat, which is close to the inlet. The dynamic balance regulating valve provided by the invention constructs the water flow direction of the valve with low inlet and high outlet through structural optimization, greatly improves the use reliability and the working range, and prolongs the service life of the diaphragm.

Description

Dynamic balance regulating valve

Technical Field

The invention relates to the technical field of medium flow control, in particular to a dynamic balance regulating valve.

Background

As is well known, a dynamic balance regulating valve is widely used in an air conditioning system due to the characteristic that the dynamic balance regulating valve can balance the flow of the system at a required set value, so that the hydraulic imbalance phenomenon caused by various factors in the system is automatically eliminated. In the actual use process, the flow required by the user can be kept, the system energy efficiency is effectively improved, and the operation economy is ensured.

However, due to the limitation of the structure of the dynamic balance regulating valve, the existing dynamic balance regulating valve has the defects of insufficient reliability, complex structure and the like.

In view of this, it is urgent to carry out structural optimization for the current dynamic balance regulating valve, and on the basis of simplifying the structure, the use reliability of the product can be effectively improved.

Disclosure of Invention

In order to solve the technical problem, the invention provides a dynamic balance regulating valve with an optimized structure, so that the use reliability is improved through structure simplification.

The invention provides a dynamic balance regulating valve, which comprises a shell with an inlet, an outlet and a valve seat, a cover body, a flow regulating assembly and a pressure balance assembly, wherein the cover body and the side wall of the shell are enclosed to form a pressure regulating cavity; wherein the inlet and the outlet of the housing are coaxially arranged along a first direction; at least part of the flow regulating assembly is arranged in the shell, and a flow regulating valve of the flow regulating assembly is adapted to one side of a valve seat close to the outlet and is in a second direction perpendicular to the first direction relative to the opening regulating direction of the valve seat; the diaphragm of the pressure balance assembly divides the pressure regulating cavity into a first cavity and a second cavity which are respectively communicated with the outlet and the inlet; the elastic piece is arranged in the first cavity, and two working ends of the elastic piece are respectively abutted with the shell and the diaphragm; the end part of the pressure regulating valve, which is positioned in the first cavity, is fixedly connected with the diaphragm, the pressure regulating valve is inserted into the shell for constructing the first cavity and forms a sliding fit pair, and the inserted end of the pressure regulating valve is arranged in the shell on one side of the valve seat, which is close to the inlet.

Preferably, the first cavity is communicated with the outlet through a through hole formed in the housing, the cylindrical body of the pressure regulating valve is provided with an inner cavity penetrating through the insertion end, and a pressure transmission channel is arranged between the inner cavity of the cylindrical body and the second cavity.

Preferably, the edge of the diaphragm is formed with a sealing convex ring, and an accommodating groove matched with the sealing convex ring is formed in the joint position of the shell, the cover body or the shell and the cover body.

Preferably, the diaphragm includes circular body and certainly the periphery body that circular body periphery axial extension formed, sealed protruding circle sets up the edge of periphery body, with sealed protruding circle adaptation the holding tank is seted up on the casing.

Preferably, the diaphragm comprises a circular body and a bending section formed by bending the outer edge of the circular body towards the cover body, the sealing convex ring is arranged at the edge of the bending section, and the accommodating groove matched with the sealing convex ring is formed in the cover body.

Preferably, the circular body and the diaphragm support plate are integrally formed, the end part of the pressure regulating valve is provided with a bottom wall connected with the cylindrical body, and the bottom wall, the diaphragm and the diaphragm support plate are fixedly connected through threaded fasteners.

Preferably, the circular body is provided with a wrapping section formed by bending from the edge of the penetrating hole of the circular body, and the wrapping section penetrates through the penetrating hole of the membrane supporting plate and wraps the membrane supporting plate at the edge of the penetrating hole.

Preferably, the threaded fastener comprises a nut located in the inner cavity of the pressure regulating valve, and a bolt having a shank extending through the bottom wall, the diaphragm support plate and the diaphragm; the pressure transmission passage is formed on the bolt to communicate the second chamber with the inlet; the pressure transmission channel comprises: the first channel is axially arranged on the rod body of the bolt; and the second channel is radially arranged at the head of the bolt.

Preferably, the valve seat body is arranged along a first direction, and the pressure regulating valve and the flow regulating valve are coaxially arranged along a second direction.

Preferably, the side wall of the shell is provided with a spigot which extends outwards, and the cover body is in threaded connection with the spigot; and the adaptation surface of the spigot on the outer side of the pressure transmission channel is provided with a first sealing element in an embedded mode, and the wall of the insertion hole of the pressure regulating valve of the shell is provided with a second sealing element in an embedded mode.

Preferably, the flow regulating assembly is an electric proportional control actuator, and a third sealing ring is arranged between the body and the shell.

Compared with the prior art, the invention innovatively provides the dynamic balance regulating valve. And has the following beneficial technical effects:

firstly, this scheme utilizes the lid to enclose in the casing outside and closes and form pressure regulation and hold the chamber, and correspondingly, this regulation appearance chamber is arranged in to the diaphragm, the elastic component and the partial pressure regulating valve of pressure balance subassembly, and pressure regulating valve cartridge is in the structure first chamber the casing forms sliding fit is vice, and the lid can accomplish the equipment of pressure balance subassembly in step after fixed with the casing, so set up, need not to independently set up the equipment component to pressure balance subassembly, has overall structure simple relatively characteristics. Meanwhile, in the dynamic pressure adjusting process, one end of the pressure adjusting valve is abutted against the diaphragm and is in sliding fit with the shell, the limiting and supporting distance of the pressure adjusting valve is increased to the maximum extent along the axial direction, and the reliability of the valve action can be effectively improved; in addition, based on the design that the pressure regulating valve is inserted in the shell, a good technical support is provided for improving the theoretical working range of the valve.

Secondly, the flow control valve of this scheme is in the one side that is close to the export of disk seat, and the cartridge end of pressure regulating valve is arranged in the one side casing that is close to the import of disk seat, also builds the rivers direction that the valve went into more than. Therefore, the valve core assisting force can be provided by means of water flow, the flow regulating valve can be pushed upwards, the valve is opened, the pressure is reduced, and the risk that the diaphragm is only subjected to the pressure of the high-pressure cavity and is damaged is avoided.

Thirdly, because the pressure of the high-pressure cavity (the second cavity) on one side of the diaphragm is introduced by the pressure at the valve seat, and the pressure of the low-pressure cavity (the first cavity) on the other side of the diaphragm is introduced by the pressure at the water outlet, the structural design can ensure that water flows into the high-pressure cavity after flowing through the valve inlet and the pressure regulating valve, thereby playing a role in stabilizing the pressure, further reducing the influence of unstable pressure on the function of the pressure regulating element and ensuring that the pressure regulating element acts stably. In addition, the pressure at the valve seat and the pressure at the valve outlet are respectively collected by the pressures at the two sides of the diaphragm, so that the pressure difference at the two sides of the diaphragm can be effectively reduced, the problem of overlarge pressure difference at the two sides of the diaphragm and reduction of the service life is avoided, and the reliability of the valve is improved.

Fourthly, in another preferred embodiment of the present invention, a sealing convex ring is formed at the edge of the membrane, and a receiving groove adapted to the sealing convex ring is provided on the housing or the cover, or may be provided at the joint position of the housing and the cover. Therefore, reliable sealing is realized between the two cavities with balanced pressure through the self-body structure formed on the diaphragm, and a sealing element is not required to be additionally arranged, so that the product structure is further simplified.

Drawings

Fig. 1 is a schematic view of an overall structure of a dynamic balance regulating valve according to an embodiment;

fig. 2 is a schematic view of the overall structure of the dynamic balance adjustment valve according to the second embodiment.

In the figure:

the sealing device comprises a shell 1, a spigot 11', an insertion hole 12, a flow regulating component 2, a flow regulating valve 21, a cover body 3, a pressure balancing component 4, a diaphragm 41', a diaphragm support plate 411', a bending section 4111', a sealing convex ring 412', a circular body 413', a bending section 414', a cladding section 415', an elastic piece 42, a pressure regulating valve 43, a cylindrical body 431, a bottom wall 432, a nut 441, a bolt 442, a first sealing piece 51, a second sealing piece 52 and a third sealing ring 53;

the valve comprises an inlet A, a valve seat B, an outlet C, a first cavity D, a second cavity E, a through hole a, a first channel B, a second channel C and an inner cavity D.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Without loss of generality, the embodiment is described in detail by using the dynamic balance regulating valve shown in the figure, and after the assembly is completed, the inlet and the outlet of the valve are respectively communicated and arranged in a user system pipeline. It should be understood that the parameters related to the valve function, such as the pressure control range and the valve opening size of the regulator valve, do not substantially limit the dynamic balance regulator valve claimed in the present application.

The first embodiment is as follows:

referring to fig. 1, the overall structure of the dynamic balance adjustment valve of the present embodiment is shown.

This dynamic balance governing valve's import A and export C set up in casing 1 both sides, and import A and export C along the coaxial setting of first direction X, be provided with the disk seat B with the adaptation of flow control assembly 2 in the casing 1, at least partial flow control assembly 2 is located one side that is close to export C of disk seat B, the rivers direction that the valve height goes into is built to the aperture change governing valve flow along second direction Y between through flow control valve 21 and disk seat B, as shown in the figure, second direction Y is perpendicular with first direction X.

In the scheme, the cover body 3 and the side wall of the shell 1 are enclosed to form a pressure regulating cavity; the pressure balancing assembly 4 comprises a diaphragm 41, an elastic member 42 and a pressure regulating valve 43, wherein the diaphragm 41 divides the pressure regulating volume into a first chamber D and a second chamber E, the second chamber E is communicated with the inlet a, and the first chamber D is communicated with the outlet C. The elastic element 42 is arranged in the first cavity D, two working ends of the elastic element 42 are respectively abutted with the shell 1 and the diaphragm 41, and the diaphragm 41 can synchronously follow up along with the pressure change of the two cavities and the deformation of the elastic element 42; the end of the pressure regulating valve 43 located in the first chamber D is fixedly connected to the diaphragm 41, and the pressure regulating valve 43 is inserted into the housing 1 forming the first chamber D and forms a sliding fit pair, and the inserted end of the pressure regulating valve 43 is placed in the housing 1 on the side of the valve seat B close to the inlet a. So set up, lid 3 and 1 fixed backs of casing can accomplish the equipment of pressure balance subassembly 4 in step, need not to set up the equipment component independently to pressure balance subassembly 4, and overall structure is simple relatively, can reduce the processingamount of component from this, improves production efficiency.

In actual use, after liquid enters the shell inlet A, the pressure difference between the inlet and the outlet of the main body can be constant all the time through the adjustment of the pressure balance assembly 4 and is irrelevant to the pressure of the inlet A. Therefore, the desired flow rate value can be obtained by controlling the opening of the valve by adjusting the distance between the valve 21 and the valve seat B of the flow rate adjusting assembly 2. The regulating valve can balance the flow of the system at a required set value, automatically eliminate hydraulic imbalance caused by various factors in the system, keep the flow required by a user and effectively improve the energy efficiency of the system. Based on the characteristics of low water flow direction and high water flow direction of the valve, the valve element assisting force can be provided by means of water flow, so that the force of driving the flow regulating valve 21 to be opened by the flow regulating assembly 2 (actuator) can be reduced.

In the dynamic pressure adjusting process, one end of the pressure adjusting valve 43 is abutted against the diaphragm and is in sliding fit with the shell 1, the limiting and supporting distance of the pressure adjusting valve 43 is increased to the maximum extent along the axial direction, and the reliability of the valve action can be effectively improved; in addition, based on the design that pressure regulating valve 43 cartridge was in casing 1, provide technical guarantee for improving the working range of valve. As shown in the figure, the pressure of the high-pressure chamber (the second chamber E) on one side of the diaphragm 41 is introduced from the pressure at the valve seat B, and the pressure of the low-pressure chamber (the first chamber D) on the other side of the diaphragm 41 is introduced from the pressure at the water outlet C, so that water flows into the high-pressure chamber after flowing through the valve inlet and the pressure regulating valve 43 in the actual use process, the effect of further stabilizing the pressure is achieved, and the influence of pressure instability on the pressure regulating function is effectively reduced. Meanwhile, the pressures at the two ends of the diaphragm 41 are respectively used for collecting the pressure at the valve seat B and the pressure at the valve outlet C, and compared with the pressure at the valve seat B and the pressure at the valve outlet C, the pressure difference at the two ends of the diaphragm 41 can be effectively reduced, and the service life is prevented from being influenced by the overlarge pressure difference at the two sides of the diaphragm 41.

The pressure regulating valve 43 in the present scheme has a flow channel function, as shown in the figure, the cylindrical body of the pressure regulating valve 43 has an inner cavity d penetrating through the insertion end, and the opening part of the inner cavity d of the pressure regulating valve 43 is arranged inside the shell 1 and communicated with the inlet a; and the cylindrical body communicates with the second chamber E through pressure transmission passages (b, c). Correspondingly, the first chamber D communicates with the outlet C through a through hole a formed in the housing 1.

As mentioned above, the cover 3 and the sidewall of the housing 1 enclose to form a pressure regulating cavity, and the cover and the housing can be sealed and connected in different ways. Such as but not limited to the preferred threaded connection shown in the figures. As shown in the figure, the side wall of the shell 1 is provided with a spigot 11 formed by extending outwards, and the outer peripheral surface of the cover body 3 is in threaded connection with the spigot 11; the pressure balance part is fixedly connected with the main body part in a threaded connection mode, and compared with the connection mode of a traditional threaded fastener, the connecting bolt has no stress weak point at the connecting position, so that the condition that the connecting strength is insufficient at the position far away from the bolt can be completely avoided.

Further, a first sealing member 51 is fitted on the fitting surface of the spigot 11 outside the inlet-side pressure transmission passage, and a second sealing member 52 is fitted on the wall of the pressure control valve insertion hole 12 of the housing 1, so as to facilitate lubrication and guidance of the pressure control valve 43 in the insertion hole 12.

The elastic member 42 is preferably a spring sleeved between the diaphragm 41 and the pressure regulating valve 43, so that the spring can be effectively fixed between the housing 1 and the diaphragm 41, and the inner space is reasonably utilized.

Wherein an inlet side pressure transmission passage is constructed by the pressure regulating valve 43 as a main element, and an outlet side pressure transmission passage may be formed on the housing 1 outside the second sealing member 52.

In the scheme, an inlet A and an outlet C of the dynamic balance regulating valve are coaxially arranged along a first direction X, a valve seat B body is arranged along the first direction X, and the opening regulating direction of the flow regulating valve 21 relative to the valve seat B is a second direction Y and is vertical to the first direction X; the pressure regulating valve 43 is provided coaxially with the flow regulating valve 21 and the valve seat B in the second direction Y. In the scheme, the inlet A and the outlet C are arranged on the same element of the shell 1, so that the problem that the two parts of devices are possibly stressed and separated due to the fact that the elements for connecting the outlet C and the inlet A are not on the same horizontal line is effectively solved.

On this basis, the end of the pressure regulating valve 43 has a bottom wall 432 connected to the cylindrical body 431, and the bottom wall 432, the diaphragm 41, and the diaphragm support plate 411 are fixedly connected by a screw fastener. The processing manufacturability is better, and the equipment is convenient. It should be understood that the threaded fastener may be adapted according to different needs, such as, but not limited to, the nut 441 and bolt 442 shown in the figures as being adapted so as to facilitate assembly and securement.

As shown, the nut 441 is located in the inner cavity d of the pressure regulating valve 43, and the rod body of the bolt 442 penetrates through the bottom wall 432 of the pressure regulating valve 43, the diaphragm support plate 411 and the diaphragm 41 to achieve screwing fit. The aforementioned pressure transmission passage (b, c) which constitutes communication with the second chamber E is formed on the bolt 442 to communicate the second chamber E with the inlet a. Specifically, the pressure transmission channel comprises a first channel b and a second channel c which are communicated in sequence; the first channel b is axially opened on the body of the bolt 442, and the second channel c is radially opened on the head of the bolt 442. It should be noted that the second channel c may be one or more as required, and of course, the design of the plurality of second channels c is preferably arranged circumferentially and uniformly to quickly establish the pressure in the second chamber E.

Wherein, the edge of diaphragm 41 is formed with sealed protruding circle 412, and the holding tank with sealed protruding circle 412 adaptation is seted up on casing 1, establishes the sealed between two chambeies of pressure balance, obviously, realizes reliably sealed through the autogenous structure who forms in diaphragm 41, need not to add the sealing member in addition, has further simplified product structure from this. Of course, a receiving groove adapted to the sealing convex ring 412 may be provided on the cover 3, or at the joint position of the housing 1 and the cover 3, which also can establish a pressure-balanced seal between the two cavities. On the whole, the valve is provided with two sections of liquid leakage prevention devices, so that the liquid leakage condition can be greatly reduced, and the first section of sealing effect is formed by the sealing convex ring 412 at the edge of the diaphragm 43; meanwhile, a special sealing ring is matched, and a second section of sealing effect is formed by utilizing the first sealing element 51.

Specifically, the diaphragm 41 includes a circular body and an outer peripheral body formed to extend axially from the periphery of the circular body, and the above-mentioned sealing bead 412 is provided at the edge of the outer peripheral body. Further, the circular body and the diaphragm support plate 412 are integrally formed, so that the secondary assembly process of the elements can be avoided, and the risk of loose connection caused by secondary assembly can be avoided.

Further, a third seal ring 53 is provided between the body of the electric proportional control actuator and the flow regulating valve 21, for example, but not limited to, at a mounting spigot position therebetween as shown in the drawing. It should be understood that the specific arrangement of the sealing ring is not limited to that shown in the drawings, as long as the requirement of the corresponding sealing function is met. Besides the electric proportional control actuator, the flow rate adjusting assembly 2 may also adopt a mechanical adjusting valve core.

The operation of the dynamic balance regulating valve will be briefly described with reference to fig. 1.

When the liquid flows in from the inlet a, passes through the valve seat B and then flows out through the outlet C, the pressure at the valve seat B is introduced into the second chamber E from the inner chamber d, the first passage B and the second passage C of the pressure regulating valve 43, and generates an upward force on the diaphragm 41; at the same time, the liquid flows through the valve seat B to the outlet C, and the pressure at this position is introduced into the first chamber D through the through hole a in the housing 1, thereby exerting a downward force on the diaphragm 41. Because the pressure of the second chamber E is greater than the pressure of the first chamber D, the pressure regulating valve 43 is driven by the diaphragm 41 to move toward the valve seat B, and the diaphragm 41 stops moving until the pressure of the second chamber E is equal to the sum of the pressure of the first chamber D and the force of the elastic member 42. Therefore, when the pressure of the inlet a changes continuously, the diaphragm 41 can drive the pressure regulating valve 43 to reach a pressure balance position continuously, that is, dynamic adjustment is performed, and the pressure difference between the two ends of the valve seat B is kept consistent all the time through the continuous change of the distance between the pressure regulating valve 43 and the valve seat B. In addition, when the required flow rate value is adjusted, the distance between the flow rate adjusting valve 21 and the valve seat B in the flow rate adjusting unit 2 may be adjusted.

Example two:

compared with the first embodiment, the dynamic balance two-way valve has a different accommodating groove arrangement position matched with the sealing convex ring 412'. Please refer to fig. 2, which is a schematic diagram of an overall structure of the dynamic balance two-way valve according to the present embodiment. For clarity of illustrating the differences and connections between the two embodiments, the components and structures with the same functions are shown by the same reference numerals.

As shown in the figure, the side wall of the housing 1 has a spigot 11 'formed to extend outwardly, and the inner peripheral surface of the lid body 3 is screwed into the spigot 11', thereby fixing the pressure equalizing portion to the main body portion by screwing, and also having no weak point of stress at the connecting position. Accordingly, the first sealing member 51 is fitted to the outer peripheral surface of the spigot 11' fitted to the end cap 3.

In this embodiment, the receiving groove adapted to the sealing convex ring 412' is disposed on the cover 3. As shown in the figure, the diaphragm 41 'includes a circular body 413', a bending section 414 'formed by bending from the outer edge of the circular body 413' toward the cover 3, and a sealing flange 412 'is disposed at the edge of the bending section 414'. With the arrangement, the cover body 3 is tightly screwed relative to the spigot 11' of the shell body 1, and then the sealing between the cover body and the shell body is realized; meanwhile, based on the characteristic that the sealing position moves downwards in the scheme, the extension length of the bending section 414 'is greatly reduced, and the whole membrane 41' is arranged at the bottom of the cover body 3, so that the risk of damage to the working state is reduced to a certain extent.

As shown in the figure, the bending section 414 'of the membrane 41' is substantially in a "V" shape, so that when the membrane 41 'is subjected to a large pressure, the membrane can be completely attached to the inner wall of the extension seam allowance 11' of the shell 1, and the possibility of damage to the membrane can be further reduced.

The bottom wall 432 of the pressure regulating valve 43, the diaphragm 41 and the diaphragm support plate 411' are also fixedly connected in this embodiment by means of the nut 441 and the bolt 442 which are adapted to each other. In order to improve the manufacturability of the integral molding of the circular body 413' and the diaphragm support plate 411', preferably, the circular body 413' has a wrapping section 415' formed by bending from the edge of the through hole, and the wrapping section 415' passes through the through hole of the diaphragm support plate 411' and wraps the plate surface of the diaphragm support plate 411' at the edge of the through hole. So set up, do benefit to integrative connection reliability on the one hand, simultaneously, this cladding section 415 'is located between diapire 432 of pressure regulating valve 43 and the diaphragm backup pad 411', has good sealed effect concurrently.

In addition, the outer edge of the diaphragm support plate 411' has a bent section 4111' toward the housing 1, and correspondingly, the outer edge of the circular body 413' has an integrally formed section bent in the same direction to form a more stable connection relationship.

It should be noted that the above-mentioned embodiment is not limited to the configuration relationship that the first chamber D communicates with the valve outlet C side and the second chamber E communicates with the valve inlet a side, and it should be understood that, based on the core concept of the present application, the configuration relationship that the first chamber D communicates with the valve inlet a side and the second chamber E communicates with the valve outlet C side may be adopted, and the configuration relationship is also within the scope of the present application.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. Dynamic balance governing valve, its characterized in that includes:

a housing having an inlet, an outlet, and a valve seat, the inlet and the outlet being coaxially disposed along a first direction;

the cover body and the side wall of the shell body enclose to form a pressure regulating cavity;

the flow regulating assembly is at least partially arranged in the shell, a flow regulating valve of the flow regulating assembly is adapted to one side of a valve seat close to the outlet, and the opening regulating direction relative to the valve seat is a second direction perpendicular to the first direction; and

a pressure balancing component, wherein a diaphragm of the pressure balancing component divides the pressure regulating cavity into a first cavity and a second cavity which are respectively communicated with the outlet and the inlet; the elastic piece is arranged in the first cavity, and two working ends of the elastic piece are respectively abutted with the shell and the diaphragm; the end part of the pressure regulating valve, which is positioned in the first cavity, is fixedly connected with the diaphragm, the pressure regulating valve is inserted into the shell for constructing the first cavity and forms a sliding fit pair, and the inserted end of the pressure regulating valve is arranged in the shell on one side of the valve seat, which is close to the inlet.

2. The dynamic balance adjustment valve of claim 1, wherein the first chamber communicates with the outlet through a through hole formed in the housing, the cylindrical body of the pressure adjustment valve has an inner chamber extending through the insertion end, and a pressure transmission passage is formed between the inner chamber of the cylindrical body and the second chamber.

3. The dynamic balance adjustment valve according to claim 2, wherein a sealing convex ring is formed at an edge of the diaphragm, and a receiving groove adapted to the sealing convex ring is provided at the housing, the cover, or a position where the housing and the cover are attached.

4. The dynamic balance adjustment valve of claim 3, wherein the diaphragm comprises a circular body and a peripheral body axially extending from the periphery of the circular body, the sealing flange is disposed at the edge of the peripheral body, and the receiving groove adapted to the sealing flange is disposed on the housing.

5. The dynamic balance adjustment valve according to claim 3, wherein the diaphragm comprises a circular body and a bent section bent from an outer edge of the circular body toward the cover, the sealing convex ring is disposed at an edge of the bent section, and the receiving groove adapted to the sealing convex ring is disposed on the cover.

6. The dynamic balance adjustment valve of claim 4 or 5, wherein the circular body is integrally formed with a diaphragm support plate, the end of the pressure adjustment valve has a bottom wall connected to the cylindrical body, and the bottom wall, the diaphragm and the diaphragm support plate are fixedly connected by threaded fasteners.

7. The dynamically balanced two-way valve according to claim 6, wherein the circular body has a wrapping section bent from an edge of the through hole thereof, and the wrapping section passes through the through hole of the membrane support plate and wraps the membrane support plate at the edge of the through hole.

8. The dynamic balance adjustment valve of claim 7, wherein said threaded fastener comprises a nut located in an interior cavity of said pressure adjustment valve and a bolt having a shank extending through said bottom wall, said diaphragm support plate and said diaphragm; the pressure transmission passage is formed on the bolt to communicate the second chamber with the inlet; the pressure transmission channel comprises:

the first channel is axially arranged on the rod body of the bolt;

and the second channel is radially arranged at the head of the bolt.

9. The dynamic balance adjustment valve of claims 1 to 8, wherein the valve seat body is disposed in a first direction, and the pressure adjustment valve and the flow adjustment valve are disposed coaxially in a second direction.

10. The dynamic balance adjustment valve of claim 9, wherein the side wall of the housing has a spigot extending outwardly therefrom, the cover being threadably coupled to the spigot; and the adaptation surface of the spigot on the outer side of the pressure transmission channel is provided with a first sealing element in an embedded mode, and the wall of the insertion hole of the pressure regulating valve of the shell is provided with a second sealing element in an embedded mode.

11. The dynamic balance regulating valve of claim 1, wherein the flow regulating assembly is an electric proportional control actuator and a third sealing ring is disposed between the body and the housing.