CN116181943A - High-precision pressure regulating valve - Google Patents

High-precision pressure regulating valve Download PDF

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Publication number
CN116181943A
CN116181943A CN202310055881.6A CN202310055881A CN116181943A CN 116181943 A CN116181943 A CN 116181943A CN 202310055881 A CN202310055881 A CN 202310055881A CN 116181943 A CN116181943 A CN 116181943A
Authority
CN
China
Prior art keywords
valve
matched
spring
diaphragm
seat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310055881.6A
Other languages
Chinese (zh)
Inventor
罗勇
朱晓明
张仁钦
周恩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Renyongde Iot Technology Co ltd
Original Assignee
Suzhou Renyongde Iot Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Renyongde Iot Technology Co ltd filed Critical Suzhou Renyongde Iot Technology Co ltd
Priority to CN202310055881.6A priority Critical patent/CN116181943A/en
Publication of CN116181943A publication Critical patent/CN116181943A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
    • F16K17/32—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting on a servo-mechanism or on a catch-releasing mechanism
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
    • F16K31/1264—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded with means to allow the side on which the springs are positioned to be altered
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • F16K31/128—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like servo actuated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

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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 high-precision pressure regulating valve, which comprises a valve cover, a valve seat and a diaphragm fixing assembly, wherein the valve cover is arranged on the valve seat; the diaphragm fixing assembly is arranged between the valve cover and the valve seat, an adjusting spring is arranged in the valve cover, and the adjusting spring is matched with the diaphragm fixing assembly; the valve seat is provided with a valve core, a fluid inlet and a fluid outlet, the valve core is matched with a flow channel between the fluid inlet and the fluid outlet, and the upper end of the valve core is matched with the diaphragm fixing assembly; the valve core is provided with a disc structure, a reset spring is arranged on the valve core, the reset spring drives the non-circumferential surface of the disc structure to be matched with the inner wall of the flow channel, and a main sealing ring is arranged between the non-circumferential surface of the disc structure and the inner wall of the flow channel; the main sealing ring is in plane contact with the inner wall of the flow channel, so that friction force is greatly reduced, and use loss of the main sealing ring is greatly reduced; and the diaphragm fixing assembly and the spring adjusting assembly are optimally designed, so that the accuracy of pressure adjustment is further improved, and the performance of the pressure adjusting valve is improved.

Description

High-precision pressure regulating valve
Technical Field
The invention relates to a high-precision pressure regulating valve, and belongs to the technical field of valves.
Background
The pressure regulating valve is a device commonly used in the field of fluid flow control, and a structure of matching a diaphragm, a valve core and an elastic part is often adopted to control the pressure of a flow passage; the control structure of current pressure regulating valve to the diaphragm is difficult to satisfy the requirement, can not simply effectual to the diaphragm adjust, and the case is most cylindric axle type structure moreover, and main sealing washer on the runner mostly sets up on the periphery of case, and in case motion in-process, main sealing washer can constantly rub with the runner wall, can produce wearing and tearing after long-time use, is unfavorable for pressure regulation's precision control.
Disclosure of Invention
Aiming at the technical problems, the invention aims at: a high-precision pressure regulating valve is provided.
The technical solution of the invention is realized as follows: a high-precision pressure regulating valve comprises a valve cover, a valve seat and a diaphragm fixing assembly; the diaphragm fixing assembly is arranged between the valve cover and the valve seat, an adjusting spring is arranged in the valve cover, and the adjusting spring is matched with the diaphragm fixing assembly; the valve seat is provided with a valve core, a fluid inlet and a fluid outlet, the valve core is matched with a flow channel between the fluid inlet and the fluid outlet, and the upper end of the valve core is matched with the diaphragm fixing assembly; the valve core is provided with a disc structure, a reset spring is arranged on the valve core, the reset spring drives the non-circumferential surface of the disc structure to be matched with the inner wall of the flow channel, and a main sealing ring is arranged between the non-circumferential surface of the disc structure and the inner wall of the flow channel.
Preferably, a spring upper cushion block is arranged in the valve cover, a spring adjusting assembly is arranged on the valve cover, and the spring adjusting assembly is matched with the spring upper cushion block.
Preferably, the spring adjusting assembly comprises a spring adjusting screw and a spring adjusting nut, the spring adjusting screw is matched with the upper end of the valve cover through a thread structure, the lower end of the spring adjusting screw penetrates through the valve cover to be matched with a spring upper cushion block in the valve cover, the spring adjusting nut is located on the outer side of the upper end of the valve cover, and the spring adjusting nut is matched with the spring adjusting screw through a thread structure.
Preferably, the membrane fixing assembly comprises an upper pressing part, a pressing gasket, a lower pressing part and a membrane; the upper pressing part is matched with the pressing gasket and the lower pressing part to clamp the inner ring of the diaphragm, the upper pressing part is matched with the lower pressing part through a threaded structure, the lower pressing part is matched with the upper end of the valve core, and the pressing gasket is positioned between the upper pressing part and the diaphragm; the valve cover and the valve seat are matched to clamp the outer ring of the diaphragm.
Preferably, the upper end of the valve core penetrates through the top structure of the valve seat, and an upper sealing ring matched with the valve seat is arranged at the upper end of the valve core.
Preferably, a pressure balance air passage is arranged on the valve seat, and the pressure balance air passage communicates a flow passage between the fluid inlet and the fluid outlet with a space on the upper side of the valve seat.
Preferably, a valve core positioning seat is arranged at the bottom of the valve seat, and is matched with the valve seat through a threaded structure and a lower sealing ring, and is matched with the lower end of the valve core and a reset spring.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the high-precision pressure regulating valve, the disc structure is designed on the valve core, the non-circumferential surface of the disc structure is matched with the inner wall of the flow channel of the valve seat, and the main sealing ring is arranged at the matched position, so that the main sealing ring is in plane contact with the inner wall of the flow channel, the friction force is greatly reduced, and the use loss of the main sealing ring is greatly reduced; and the diaphragm fixing assembly and the spring adjusting assembly are optimally designed, so that the accuracy of pressure adjustment is further improved, and the performance of the pressure adjusting valve is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the contents of the embodiments of the present invention and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a side view of a high-precision pressure regulating valve according to the present invention;
fig. 2 is a cross-sectional view taken along A-A of fig. 1.
Description of the embodiments
In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 and 2, the high-precision pressure regulating valve comprises a valve cover 1, a valve seat 2 and a diaphragm fixing assembly; the diaphragm fixing assembly is arranged between the valve cover 1 and the valve seat 2, an adjusting spring 3 and a spring upper cushion block 4 are arranged in the valve cover 1, a spring adjusting assembly is arranged on the valve cover 1 and is matched with the spring upper cushion block 4, and the adjusting spring 3 is matched with the diaphragm fixing assembly.
The spring adjusting assembly comprises a spring adjusting screw 8 and a spring adjusting nut 9, the spring adjusting screw 8 is matched with the upper end of the valve cover 1 through a threaded structure, the lower end of the spring adjusting screw 8 penetrates through the valve cover 1 to be matched with the spring upper cushion block 4 in the valve cover 1, the spring adjusting nut 9 is located on the outer side of the upper end of the valve cover 1, and the spring adjusting nut 9 is matched with the spring adjusting screw 8 through a threaded structure.
The spring adjusting component can be controlled manually or electrically, such as a micro motor, a motor and the like; the diaphragm fixation assembly is adjusted by means of a spring adjustment assembly, a sprung head block 4 and an adjustment spring 3.
The diaphragm fixing assembly comprises an upper pressing part 11, a pressing gasket 12, a lower pressing part 13 and a diaphragm 14; the upper pressing part 11, the pressing gasket 12 and the lower pressing part 13 are matched to clamp the inner ring of the diaphragm 14, and the pressing gasket 12 is positioned between the upper pressing part 11 and the diaphragm 14; the valve cover 1 is mutually matched with the valve seat 2, the outer ring of the diaphragm 14 is directly clamped, the matching size of the valve cover 1 and the valve seat 2 can be optimized, and the pressure adjusting precision is further improved.
The upper pressing part 11, the pressing gasket 12 and the diaphragm 14 are all of annular structures, the upper pressing part 11 is matched with the lower pressing part 13 through a threaded structure, the threaded structure penetrates through a center hole of the diaphragm 14, the pressing force of the inner ring of the diaphragm 14 can be adjusted through the threaded structure, and compared with the traditional die pressing fixing technology, the diaphragm fixing assembly is optimized in size and higher in precision.
And the compression gasket 12 can reduce the action of the rotation friction force of the diaphragm fixing assembly; and the coefficient of friction of the compression pad 12 and the diaphragm 14 can be further increased while the coefficient of friction of the other face is reduced.
The valve seat 2 is provided with a valve core 5, a fluid inlet 10 and a fluid outlet 20, the valve core 5 is matched with a flow passage between the fluid inlet 10 and the fluid outlet 20, and the upper end of the valve core 5 is matched with the lower pressing part 13.
The valve core 5 is provided with a disc structure, the valve core 5 is provided with a reset spring 6, the reset spring 6 drives the upper side surface of the disc structure to be matched with the inner wall of the flow channel, the upper side surface of the disc structure is a non-circumferential surface, and a main sealing ring 7 is arranged between the upper side surface of the disc structure and the inner wall of the flow channel; the structure enables the disc structure and the main sealing ring 7 to be in plane contact with the inner wall of the flow channel, so that friction force is greatly reduced, and pressure regulation precision is improved.
In order to facilitate the assembly of the valve core 5, a valve core positioning seat 17 is designed at the bottom of the valve seat 2, the valve core positioning seat 17 is matched with the valve seat 2 through a threaded structure and a lower sealing ring 18, and the valve core positioning seat 17 is matched with the lower end of the valve core 5 and the return spring 6.
As an alternative way, the upper end of the valve core 5 passes through the top structure of the valve seat 2, and the upper end of the valve core 5 is provided with an upper sealing ring 15 matched with the valve seat 2; and a pressure balance air passage 16 is provided in the valve seat 2, the pressure balance air passage 16 communicating a flow path between the fluid inlet 10 and the fluid outlet 20 with a space on the upper side of the valve seat 2.
Of course, the upper seal ring 15 and the pressure balance air passage 16 may not be provided.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims (7)

1. A high-precision pressure regulating valve is characterized in that: comprises a valve cover (1), a valve seat (2) and a diaphragm fixing component; the diaphragm fixing assembly is arranged between the valve cover (1) and the valve seat (2), an adjusting spring (3) is arranged in the valve cover (1), and the adjusting spring (3) is matched with the diaphragm fixing assembly; the valve seat (2) is provided with a valve core (5), a fluid inlet (10) and a fluid outlet (20), the valve core (5) is matched with a flow passage between the fluid inlet (10) and the fluid outlet (20), and the upper end of the valve core (5) is matched with the diaphragm fixing assembly; the valve core (5) is provided with a disc structure, the valve core (5) is provided with a reset spring (6), the reset spring (6) drives the non-circumferential surface of the disc structure to be matched with the inner wall of the flow channel, and a main sealing ring (7) is arranged between the non-circumferential surface of the disc structure and the inner wall of the flow channel.
2. The high-precision pressure regulating valve according to claim 1, wherein: the valve cover (1) is internally provided with a spring upper cushion block (4), the valve cover (1) is provided with a spring adjusting assembly, and the spring adjusting assembly is matched with the spring upper cushion block (4).
3. The high-precision pressure regulating valve according to claim 2, wherein: the spring adjusting assembly comprises a spring adjusting screw (8) and a spring adjusting nut (9), the spring adjusting screw (8) is matched with the upper end of the valve cover (1) through a threaded structure, the lower end of the spring adjusting screw (8) penetrates through the valve cover (1) to be matched with a spring upper cushion block (4) in the valve cover (1), the spring adjusting nut (9) is located on the outer side of the upper end of the valve cover (1), and the spring adjusting nut (9) is matched with the spring adjusting screw (8) through a threaded structure.
4. The high-precision pressure regulating valve according to claim 1, wherein: the diaphragm fixing assembly comprises an upper pressing part (11), a pressing gasket (12), a lower pressing part (13) and a diaphragm (14); the upper pressing part (11) is matched with the pressing gasket (12) and the lower pressing part (13) to clamp the inner ring of the diaphragm (14), the upper pressing part (11) is matched with the lower pressing part (13) through a threaded structure, the lower pressing part (13) is matched with the upper end of the valve core (5), and the pressing gasket (12) is positioned between the upper pressing part (11) and the diaphragm (14); the valve cover (1) is matched with the valve seat (2) to clamp the outer ring of the diaphragm (14).
5. The high-precision pressure regulating valve according to claim 1, wherein: the upper end of the valve core (5) penetrates through the top structure of the valve seat (2), and an upper sealing ring (15) matched with the valve seat (2) is arranged at the upper end of the valve core (5).
6. The high-precision pressure regulating valve according to claim 1, wherein: the valve seat (2) is provided with a pressure balance air passage (16), and the pressure balance air passage (16) is used for communicating a flow passage between the fluid inlet (10) and the fluid outlet (20) with a space on the upper side of the valve seat (2).
7. The high-precision pressure regulating valve according to claim 1, wherein: the bottom of disk seat (2) is provided with case positioning seat (17), and case positioning seat (17) is through screw structure and lower sealing washer (18) and cooperation of disk seat (2), and case positioning seat (17) cooperates with lower extreme and reset spring (6) of case (5).
CN202310055881.6A 2023-01-17 2023-01-17 High-precision pressure regulating valve Pending CN116181943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310055881.6A CN116181943A (en) 2023-01-17 2023-01-17 High-precision pressure regulating valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310055881.6A CN116181943A (en) 2023-01-17 2023-01-17 High-precision pressure regulating valve

Publications (1)

Publication Number Publication Date
CN116181943A true CN116181943A (en) 2023-05-30

Family

ID=86435898

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310055881.6A Pending CN116181943A (en) 2023-01-17 2023-01-17 High-precision pressure regulating valve

Country Status (1)

Country Link
CN (1) CN116181943A (en)

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