CN110553070A - Dynamic balance two-way valve - Google Patents
Dynamic balance two-way valve Download PDFInfo
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- CN110553070A CN110553070A CN201910936761.0A CN201910936761A CN110553070A CN 110553070 A CN110553070 A CN 110553070A CN 201910936761 A CN201910936761 A CN 201910936761A CN 110553070 A CN110553070 A CN 110553070A
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 88
- 238000007789 sealing Methods 0.000 claims description 48
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 10
- 230000037431 insertion Effects 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a dynamic balance two-way valve which comprises a shell, a cover body, a flow adjusting assembly and a pressure balance assembly, wherein the shell is provided with an inlet, an outlet and a valve seat; the flow regulating assembly consists of a balance valve core and an elastic part; the flow regulating valve of the flow regulating assembly is adapted to one side of the valve seat; the 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 inlet and the outlet; 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 positioned in the first cavity is fixedly connected with the diaphragm, and the pressure regulating valve is inserted in the shell for constructing the first cavity and forms a sliding fit pair. The dynamic balance two-way valve provided by the invention has the advantages that the use reliability and the working range are greatly improved through the structural optimization.
Description
Technical Field
the invention relates to the technical field of thermal control, in particular to a dynamic balance two-way valve.
Background
As is known, a dynamic balance two-way valve is widely used in a thermodynamic system due to its characteristic of being able to balance the flow of the system at a desired set value, thereby automatically eliminating hydraulic imbalance caused by various factors in the system. 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 two-way valve, the existing dynamic balance two-way valve has the defects of insufficient reliability, complex structure and the like.
in view of this, it is urgently needed to perform structural optimization on the existing dynamic balance two-way 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 two-way valve with an optimized structure, so that the use reliability is improved through structural simplification.
The invention provides a dynamic balance two-way valve which comprises a shell, a cover body, a flow adjusting assembly and a pressure balance assembly, wherein the shell is provided with an inlet, an outlet and a valve seat; wherein the flow regulating valve of the flow regulating assembly is adapted to one side of the valve seat; the 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 inlet and the outlet; 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 positioned in the first cavity is fixedly connected with the diaphragm, and the pressure regulating valve is inserted in the shell for constructing the first cavity and forms a sliding fit pair.
Preferably, the flow regulating valve is adapted to a side of the valve seat close to the inlet, and the inserting end of the pressure regulating valve is placed in the housing close to the outlet; and the cylindrical body of the pressure regulating valve is provided with an inner cavity penetrating through the insertion end and a through hole communicating the inner cavity with the first cavity, and the second cavity is communicated with the inlet.
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 comprises a circular body and a peripheral body axially extending from the periphery of the circular body, and the sealing convex ring is arranged at the edge of the peripheral body.
Preferably, the circular body is integrally formed with the diaphragm support plate.
Preferably, the end of the pressure regulating 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 a threaded fastener.
Preferably, the housing and the cover on the inlet side have pressure transmission channels to communicate the second chamber with the inlet.
Preferably, the pressure transmission channel comprises in series: the first channel is arranged on the shell on one side of the inlet; the annular second channel is formed in one or both of the jointing surfaces of the shell and the cover body; and the third channel is arranged on the cover body.
Preferably, the inlet and the outlet are coaxially arranged along a first direction, the valve seat body is arranged along the first direction, the opening degree adjusting direction of the flow regulating valve relative to the valve seat is a second direction perpendicular to the first direction, and the pressure regulating valve and the flow regulating valve are coaxially arranged along the 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 further comprises, coaxially arranged with the flow regulating valve: the valve cover is fixedly connected with the shell, at least part of the body of the valve cover is arranged in the shell, and the valve cover extends inwards in the radial direction to form a convex ring matched with the flow regulating valve; the valve core sleeve is sleeved at the outer end part of the flow regulating valve; the elastic piece is pre-compressed and arranged between the valve core sleeve and the convex ring; the pin shaft is coaxially and fixedly arranged with the flow regulating valve; the adjusting cover is sleeved on the periphery of the pin shaft, at least part of the body of the adjusting cover is arranged in the valve cover and is in threaded connection with the valve cover, and the inner end face of the adjusting cover is pressed against the valve core sleeve.
Preferably, the outward extending section of the adjusting cover is retracted to form a limiting step, and the limiting step and a retainer ring clamped on the inner wall of the valve cover form an axial limiting pair; a third sealing ring is arranged between the convex ring and the flow regulating valve, a fourth sealing ring is arranged between the valve cover and the shell, a fifth sealing ring is arranged between the regulating cover and the valve cover, and a sixth sealing ring is arranged between the pin shaft and the regulating cover.
Compared with the prior art, the invention innovatively provides the dynamic balance two-way valve. Specifically, the cover body is used for enclosing the outer side of the shell to form a pressure regulation accommodating cavity, correspondingly, a diaphragm, an elastic piece and a partial pressure regulation valve of the pressure balance assembly are arranged in the regulation accommodating cavity, the pressure regulation valve is inserted in the shell for constructing the first cavity and forms a sliding fit pair, the cover body and the shell can be synchronously assembled after being fixed, and therefore the pressure balance assembly is arranged, the assembling elements do not need to be independently arranged for the pressure balance assembly, and the pressure regulation device has the characteristic of relatively simple integral structure. 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.
In a preferred embodiment of the present invention, the flow control valve is fitted to the side of the valve seat close to the inlet, the pressure control valve is inserted into the housing close to the outlet, the cylindrical body has an inner cavity penetrating the inserted end and a through hole communicating the inner cavity with the first cavity, and the second cavity communicates with the inlet. In comparison, the first cavity is communicated with the outlet through the inner cavity of the cylindrical body, so that the sensitivity of the low-pressure side pressure can be improved to a certain extent, and the control precision of the pressure difference between the two sides is ensured.
In another preferred embodiment of the present invention, a sealing convex ring is formed on 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.
In another preferred embodiment of the present invention, the pressure transmission channel of the valve is provided with an annular pressure transmission channel at the balancing portion, which ensures that the pressure can be conducted when the balancing portion rotates to any angle, and provides a good technical guarantee for the feasibility of the threaded connection between the cover body and the housing.
In the preferred scheme of the invention, the flow regulating assembly adopts a mode of combining a spring reset function and a balanced valve core function, the shutoff pressure difference of the valve can be effectively improved through the adjustment of the structure, the valve can be opened only by using a spring to overcome the friction force of parts under the condition of larger inlet pressure, and the condition of shutting off the valve with large working pressure difference by using a small-force actuator is realized.
Drawings
Fig. 1 is a schematic diagram of an overall structure of the dynamic balance two-way valve according to the embodiment.
In the figure:
the flow control valve comprises a shell 1, a spigot 11, an insertion hole 12, a flow control assembly 2, a flow control valve 21, a rubber sealing ring 211, a pin shaft 22, a valve cover 23, a convex ring 231, an adjusting cover 24, a valve core sleeve 25, an elastic part 26, a compression column 27, a retainer ring 28, a dial 29, a cover body 3, a pressure balance assembly 4, a diaphragm 41, a diaphragm supporting plate 411, a sealing convex ring 412, an elastic part 42, a pressure control valve 43, a cylindrical body 431, a bottom wall 432, a threaded fastener 44, a first sealing part 51, a second sealing part 52, a third sealing part 53, a fourth sealing part 54, a fifth sealing part 55 and a sixth sealing part 56;
The valve comprises an inlet A, a valve seat B, an outlet C, a first cavity D, a second cavity E, a first channel a, a second channel B, a third channel C, an inner cavity D and a through hole E.
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 two-way valve shown in the figure, and after the assembly is completed, an inlet and an 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 two-way valve, do not substantially limit the dynamically balanced two-way valve claimed in the present application.
Referring to fig. 1, the overall structure of the dynamic balance two-way valve according to the present embodiment is shown.
The inlet A and the outlet C of the dynamic balance two-way valve are arranged on two sides of the shell 1, a valve seat B matched with the flow adjusting component 2 is arranged in the shell 1, and the flow adjusting component 2 is located on one side of the valve seat B so as to adjust the flow of the valve through the opening change between the flow adjusting valve 21 and the valve seat B.
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 equalization assembly 4 comprises a diaphragm 41, a resilient 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, one communicating with the inlet a and the other communicating 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. 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 is constant all the time through the adjustment of the pressure balance assembly 4 and is independent of 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 two-way 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.
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.
In order to obtain good differential pressure control accuracy, the flow regulating valve 21 is fitted to the side of the valve seat B close to the inlet a, and accordingly, the insertion end of the pressure regulating valve 43 is placed in the housing 1 on the side of the valve seat B close to the outlet C; the pressure regulating valve 43 in the present embodiment 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 the insertion end, that is, the opening part of the inner cavity d of the pressure regulating valve 43 is disposed inside the housing 1 and is communicated with the outlet C; and the cylindrical body is also provided with through holes e for communicating the inner cavity D with the first cavity D, and the through holes e can be preferably arranged into at least two circumferentially and uniformly distributed holes. The second chamber E communicates with the inlet a. In comparison, the first cavity D is communicated with the outlet C through the inner cavity D of the cylindrical body, so that the sensitivity of the low-pressure side pressure can be improved to a certain extent, and the control precision of the pressure difference between the two sides is ensured.
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 outlet side pressure transmission passage is constructed by the pressure regulating valve 21 as a main component, and an inlet side pressure transmission passage may be formed on the housing 1 and the cover 3 inside the first sealing member 51 to communicate the second chamber E with the inlet a. As shown in the figure, the first channel a is arranged on the shell 1 on one side of the inlet a, the annular second channel b is arranged on the binding surface of the cover body 3 and the shell 1, the third channel c is arranged on the cover body 3 and communicated with the second cavity E, and the first channel a, the second channel b and the third channel c are sequentially communicated. Here, be equipped with annular pressure transmission channel on lid 3, guaranteed to realize switching on of pressure all can to realize under the circumstances of lid 3 rotatory to any angle, provide good technical guarantee for the feasibility that realizes lid and casing threaded connection.
The annular second passage b is opened on the surface of the lid 3 that contacts the housing 1, and is a preferred example provided in the present embodiment. In fact, it is also possible to adopt a design that the annular second channel b is provided on the joint surface of the housing 1 and the cover 3, or on both joint surfaces at the same time, as long as the functional requirement that pressure conduction can be realized when the cover 3 rotates to any angle can be satisfied, which is within the scope of the present application.
In the scheme, an inlet a and an outlet C of the dynamic balance two-way valve are coaxially arranged along a first direction X, a valve seat B body is arranged along the first direction X, and an opening degree adjusting direction of the flow regulating valve 21 relative to the valve seat B is a second direction Y and is perpendicular 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 separated due to stress caused by the fact that the elements for connecting the outlet C and the inlet A are not on the same horizontal line in the prior art 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 the screw fasteners 44. The processing manufacturability is better, and the equipment is convenient.
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 autologous structure that forms in the diaphragm, 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 second stage of sealing effect is formed by the first sealing member 51 while using a dedicated seal ring.
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 membrane support plate 412 are integrally formed, so that the secondary assembly process of the element can be avoided, and the risk of loose connection caused by secondary assembly is avoided.
Furthermore, the flow regulating assembly 2 can also be implemented in different ways. Preferably, the flow regulating assembly 2 further includes a valve cover 23, a valve core sleeve 25, an elastic member 26, a pin 22 and an adjusting cover 24 coaxially disposed with the flow regulating valve 21, wherein the valve cover 23 is fixedly connected with the housing 1, at least a part of the body of the valve cover 23 is disposed in the housing 1, and extends radially inward to form a convex ring 231 for adapting to the flow regulating valve 21; the valve core sleeve 25 is sleeved at the outer end part of the flow regulating valve 21; the elastic member 26 is specifically a spring, and is pre-compressed and placed between the valve core sleeve 25 and the convex ring 231; the pin shaft 22 and the flow regulating valve 21 are coaxially and fixedly arranged; the adjusting cover 24 is sleeved on the periphery of the pin shaft 22, at least part of the body of the adjusting cover 24 is arranged in the valve cover 23 and is in threaded connection with the valve cover 23, and the inner end face of the adjusting cover 24 is pressed against the valve core sleeve 25.
Furthermore, the outward extending section of the adjusting cover 24 is retracted to form a limit step, and the limit step and a retainer ring 28 clamped on the inner wall of the valve cover 23 form an axial limit pair; a third sealing ring 53 is arranged between the convex ring 231 and the flow regulating valve 21, a fourth sealing ring 54 is arranged between the valve cover 23 and the shell 1, a fifth sealing ring 55 is arranged between the regulating cover 24 and the valve cover 23, and a sixth sealing ring 56 is arranged between the pin shaft 22 and the regulating cover 24. 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.
As shown in the figure, the pin 22 of the assembly is pressed on the upper end of the flow regulating valve 21, and the pin and the flow regulating valve synchronously displace and regulate the opening degree of the valve; the upper end of the flow regulating valve 21 is arranged in the valve cover 23, the lower end of the flow regulating valve 21 can be provided with the rubber sealing ring 211, the flow of the valve which flows through under the closing state of the valve is greatly reduced, and zero leakage of the valve can be realized. The valve core sleeve 25 is arranged at the upper end of the flow regulating valve 21 and is in interference fit with the flow regulating valve 21, the elastic part 26 is arranged in the valve cover 23 and is sleeved outside the flow regulating valve 21, one end of the elastic part is abutted against the valve cover 23, and the other end of the elastic part is abutted against the valve core sleeve 25, so that the balance valve core structure combining the resetting function of the elastic part 26 (spring) ensures that the valve can realize the opening function of the valve through the spring with smaller force under the condition of any inlet pressure, the working range of the valve can be improved, and the force required by an actuating mechanism is not required to be increased; the sixth sealing ring 56 is fixed by interference fit of the pressure column 27 and the adjusting cover 24, the axial position of the adjusting cover 24 relative to the valve cover 23 can be adjusted up and down by threads, so that the maximum opening stroke of the valve can be adjusted as required, and the check ring 28 is arranged at the upper end of the valve cover 23 to fix the operation range of the adjusting cover 24 in the valve cover 23. Wherein, the dial 29 is arranged on the end surface of the valve cover 23, correspondingly, the outer peripheral surface of the adjusting cover 24 can be provided with pointer type identification structure, and based on the preset size configuration relationship, the operator can know the current adjusted maximum opening travel through the dial 29.
the operation of the dynamically balanced two-way valve will be briefly described with reference to fig. 1.
When liquid flows in from the inlet A, passes through the valve seat B and then flows out from the outlet C, the pressure of the inlet A flows in from the first channel a, the pressure which flows through the second channel B and then passes through is guided into the second cavity E from the third channel C, and an upward force is generated on the diaphragm 41; meanwhile, when the liquid flows in from the inlet A and flows through the valve seat B, the pressure generated by the liquid flows into the inner cavity D from the cup opening of the pressure regulating valve 43, and the pressure is introduced into the first cavity D through the through hole e to generate 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.
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 (10)
1. A dynamically balanced two-way valve comprising:
a housing having an inlet, an outlet, and a valve seat;
The cover body and the side wall of the shell body enclose to form a pressure regulating cavity;
The flow regulating assembly is provided with a flow regulating valve which is matched with one side of the valve seat; and
The pressure balancing component is provided with a diaphragm which divides the pressure adjusting cavity into a first cavity and a second cavity which are respectively communicated with the inlet and the outlet; 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 positioned in the first cavity is fixedly connected with the diaphragm, and the pressure regulating valve is inserted in the shell for constructing the first cavity and forms a sliding fit pair.
2. The dynamically balanced two-way valve according to claim 1, wherein the flow regulating valve is fitted to a side of the valve seat near the inlet, and the insertion end of the pressure regulating valve is disposed in the housing on a side of the valve seat near the outlet; and the cylindrical body of the pressure regulating valve is provided with an inner cavity penetrating through the insertion end and a through hole communicating the inner cavity with the first cavity, and the second cavity is communicated with the inlet.
3. The two-way 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 formed at the housing, the cover, or a position where the housing and the cover are attached to each other.
4. the dynamically balanced two-way valve according to claim 3 wherein the diaphragm includes a circular body and a peripheral body extending axially from a periphery of the circular body, the sealing bead being disposed at an edge of the peripheral body; the circular body and the membrane supporting sheet are integrally formed.
5. The dynamically balanced two way valve of claim 4 wherein the end of the pressure regulating valve has a bottom wall connected to the cylindrical body, the bottom wall, the diaphragm and the diaphragm support plate being fixedly connected by threaded fasteners.
6. The dynamically balanced two-way valve according to claim 1, wherein the housing and the cover on the inlet side have pressure transmission channels to communicate the second chamber with the inlet; the pressure transmission channel comprises:
The first channel is arranged on the shell on one side of the inlet;
The annular second channel is formed in one or both of the jointing surfaces of the shell and the cover body;
and the third channel is arranged on the cover body.
7. the dynamically balanced two-way valve according to claims 1 to 6, wherein the inlet and the outlet are coaxially disposed in a first direction, the valve seat body is disposed in the first direction, the opening adjustment direction of the flow regulating valve with respect to the valve seat is a second direction perpendicular to the first direction, and the pressure regulating valve and the flow regulating valve are coaxially disposed in the second direction.
8. The dynamically balanced two-way valve according to claim 7, wherein the sidewall 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.
9. the dynamically balanced two-way valve according to claim 1, wherein the flow regulating assembly further comprises, coaxially arranged with the flow regulating valve:
The valve cover is fixedly connected with the shell, at least part of the body of the valve cover is arranged in the shell and extends inwards in the radial direction to form a convex ring matched with the flow regulating valve;
The valve core sleeve is sleeved at the outer end part of the flow regulating valve;
The elastic piece is pre-compressed and arranged between the valve core sleeve and the convex ring;
The pin shaft is coaxially and fixedly arranged with the flow regulating valve;
The adjusting cover is sleeved on the periphery of the pin shaft, at least part of the body of the adjusting cover is arranged in the valve cover and is in threaded connection with the valve cover, and the inner end face of the adjusting cover is pressed against the valve core sleeve.
10. The dynamic balance two-way valve according to claim 9, wherein the overhanging section of the adjusting cover is retracted to form a limiting step, and the limiting step and a retainer ring clamped on the inner wall of the valve cover form an axial limiting pair; a third sealing ring is arranged between the convex ring and the flow regulating valve, a fourth sealing ring is arranged between the valve cover and the shell, a fifth sealing ring is arranged between the regulating cover and the valve cover, and a sixth sealing ring is arranged between the pin shaft and the regulating cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910936761.0A CN110553070A (en) | 2019-09-29 | 2019-09-29 | Dynamic balance two-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910936761.0A CN110553070A (en) | 2019-09-29 | 2019-09-29 | Dynamic balance two-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110553070A true CN110553070A (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910936761.0A Pending CN110553070A (en) | 2019-09-29 | 2019-09-29 | Dynamic balance two-way valve |
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| CN (1) | CN110553070A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117553137A (en) * | 2024-01-12 | 2024-02-13 | 沈阳安达节能阀门科技有限公司 | Fluid balance regulating valve |
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| CN207893192U (en) * | 2018-03-08 | 2018-09-21 | 北京卓奥阀业有限公司 | Dynamic balance adjusting valve |
| CN211259778U (en) * | 2019-09-29 | 2020-08-14 | 绥中泰德尔自控设备有限公司 | Dynamic balance two-way valve |
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| US5586569A (en) * | 1995-07-27 | 1996-12-24 | Parker-Hannifin Corporation | Pneumatic pressure regulator |
| WO2010086628A1 (en) * | 2009-02-02 | 2010-08-05 | Crane Limited | Fluid flow governor |
| KR101019723B1 (en) * | 2010-06-14 | 2011-03-07 | 김남용 | Flow adjusting valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117553137A (en) * | 2024-01-12 | 2024-02-13 | 沈阳安达节能阀门科技有限公司 | Fluid balance regulating valve |
| CN117553137B (en) * | 2024-01-12 | 2024-03-15 | 沈阳安达节能阀门科技有限公司 | Fluid balance regulating valve |
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