CN111271507B - Single-valve-core multifunctional valve and function adjusting method thereof - Google Patents

Single-valve-core multifunctional valve and function adjusting method thereof Download PDF

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Publication number
CN111271507B
CN111271507B CN202010224298.XA CN202010224298A CN111271507B CN 111271507 B CN111271507 B CN 111271507B CN 202010224298 A CN202010224298 A CN 202010224298A CN 111271507 B CN111271507 B CN 111271507B
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China
Prior art keywords
valve
function
rod
core
spring
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CN202010224298.XA
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Chinese (zh)
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CN111271507A (en
Inventor
张景胜
胡英
孙丰迎
解瑞江
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.)
China First Heavy Industries Co Ltd
CFHI Dalian Engineering and Technology Co Ltd
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China First Heavy Industries Co Ltd
CFHI Dalian Engineering and Technology Co Ltd
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Priority to CN202010224298.XA priority Critical patent/CN111271507B/en
Publication of CN111271507A publication Critical patent/CN111271507A/en
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Publication of CN111271507B publication Critical patent/CN111271507B/en
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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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles
    • 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
    • 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
    • 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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
    • 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
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Safety Valves (AREA)

Abstract

The invention provides a single-valve-core multifunctional valve and an adjusting method thereof. Comprising the following steps: valve gap, valve body, regulation pole, valve rod, lock nut, case, valve pocket, stop collar and spring, valve gap detachably fixes on the valve body, and the valve pocket sets up in the valve body inside, and the case sets up in the valve pocket lower part, and the stop collar sets up upper portion in the valve pocket, and the spring sets up in the case inside, and its upper end links to each other with the valve rod, valve rod and regulation pole terminal surface contact, adjusts the pole and pass the valve gap, sets up at the valve gap upper end and matches the lock nut of regulation pole, and it is used for fixing the regulation pole in preset position, through adjusting the distance that the regulation pole outstanding in the valve gap, adjusts this multi-functional valve into stop function, throttle function and pressure-adjustable pressure limiting function, the quantity of regulation pole, valve rod, case is one. The invention utilizes a single valve core, a single valve rod and a single spring to realize the technology of integrating the functions of the stop valve, the forward throttling reverse check valve, the adjustable opening pressure one-way valve and the safety valve, and has wide application.

Description

Single-valve-core multifunctional valve and function adjusting method thereof
Technical Field
The invention relates to the technical field of fluid transmission, in particular to a single-valve-core multifunctional valve and a function adjusting method thereof.
Background
The valve is a pipeline accessory for opening and closing a pipeline, controlling the flow direction, adjusting and controlling parameters (temperature, pressure and flow rate) of a conveying medium. One-way valves, also known as check valves or non-return valves, are used in hydraulic systems to prevent reverse flow of oil flow or in pneumatic systems to prevent reverse flow of compressed air. A throttle valve is a valve that controls the flow of a fluid by changing the throttle cross section or throttle length. The stop valve relies on valve rod pressure to make case sealing surface and valve seat sealing surface closely laminate, prevents the medium circulation. The safety valve is a special valve which is in a normally closed state under the action of spring force and prevents the medium pressure in the pipeline or the equipment from exceeding a specified value by discharging the medium to the outside of the system when the medium pressure in the equipment or the pipeline rises to exceed the specified value. The valves are all common valves in the prior art, and each valve has only unique characteristics and is not universal.
Disclosure of Invention
According to the technical problems set forth above, a single-valve-core multifunctional valve and a function adjusting method thereof are provided. The invention adopts the following technical means:
a single-spool multi-function valve comprising: the multifunctional valve comprises a valve cover, a valve body, a valve core, a valve sleeve, a limiting sleeve and a valve rod, and further comprises an adjusting rod, a locking nut and a spring, wherein the valve cover is detachably fixed on the valve body; A. the opening degree of the opening B is smaller than the function of a forward throttling reverse check valve of the maximum stroke of the valve core; the check valve or the safety valve with adjustable opening pressure is characterized in that the limit sleeve is used for limiting the maximum opening degree of the valve core, and the number of the adjusting rod, the valve core and the spring is one.
Further, the lower part of the spring is guided by the inner hole of the valve core, and the upper part of the spring is guided by the valve rod.
Further, the spring compression amount of the spring in the valve core is set by the position of the valve rod driven by the adjusting rod; the maximum opening of the valve port is limited by the limit sleeve, and is unchanged when the valve port is used as a check valve or a safety valve.
The invention also provides a function adjusting method of the single-valve-core multifunctional valve, specifically, the maximum stroke of the valve core is S0, the maximum stroke of the valve rod is H0, and H0 is more than S0, and the specific function adjusting method comprises the following steps:
the regulation to cut-off function is specifically: the regulating hand wheel is used for regulating the rod to move downwards to drive the valve rod to move downwards, the valve rod acts on the lowest end in the valve core to press the valve core on the valve seat, and the valve is closed and is in a completely cut-off state;
the function of regulating forward throttling and reverse stopping is specifically as follows: the regulating hand wheel, the regulating rod moves upwards from the cut-off function position by H, the valve rod is driven to move upwards from the cut-off function position by H < S0, when the pressure difference of the opening of the valve A, B is larger than the set spring force, the valve core is opened upwards, the spring is compressed, the valve is opened, the opening degree is equal to the valve core stroke S, and the throttling function is realized; when the pressure difference of the opening of the valve A, B is smaller than the set spring force, the valve is in a complete cut-off state;
adjust to check valve or relief valve function: the regulating hand wheel, the regulating rod moves upwards from the stop function by H, the spring drives the valve rod to move upwards from the stop function position by H, S0 is less than H0, and when the A, B port pressure difference is less than the set spring force, the valve port is closed; when the A, B port pressure difference is larger than the set spring force, the valve port is opened, the maximum opening degree defined by the limiting sleeve is equal to the maximum stroke S0 of the valve core, and the function of a one-way valve or a safety valve with adjustable opening pressure is realized.
The multifunctional valve is regulated 1) by regulating the distance of the regulating rod protruding from the valve cover, so that the multifunctional valve has a throttling function when in unidirectional flow; 2) As a one-way valve or a safety valve for a pressure limiting function; 3) And when the equipment is overhauled, the equipment is manually closed, so that the medium on the non-overhauling side is ensured not to leak. The invention uses single valve core, single valve rod and single spring to realize the multifunctional technology, which has wide application. The valve opening pressure is adjustable, and the weakening of the elasticity of the spring can be compensated by increasing the pretightening force, or the optimal opening pressure can be set.
For the reasons, the invention can be widely popularized in the technical field of fluid transmission.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
Fig. 1 is a state diagram of the check valve in the blocking function according to the embodiment of the present invention.
Fig. 2 is a state diagram of the check valve in the forward throttle reverse check function according to the embodiment of the present invention.
Fig. 3 is a state diagram of the check valve in the check valve or the safety valve function according to the embodiment of the present invention.
In the figure: 1. an adjusting rod; 2. a valve stem; 3. a spring; 4. a valve core; 5. a valve sleeve; 6. a valve cover; 7. a valve body; 8. a limit sleeve; 9. a hand wheel; 10. a nut; 11. a lock nut; 12. a bolt; 13. a gasket; 14. a first seal ring; 15. a second seal ring; 16. a third seal ring; 17. and a fourth sealing ring.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. 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 be within the scope of the invention.
As shown in fig. 1, this embodiment discloses a single-spool multifunctional valve, comprising: the valve cover 6, the valve body 7, the valve core 4, the valve sleeve 5, the limit sleeve 8 and the valve rod 2, further comprises an adjusting rod 1, a lock nut 11 and a spring 3, wherein the valve cover 6 is detachably fixed on the valve body 7 through a bolt 12, and a gasket 13 is further arranged between the valve cover 6 and the valve body. The contact part of the lower part of the valve sleeve 5 and the valve core 4 is equivalent to a valve seat, the valve sleeve 5 is arranged in the valve body 7, the valve core 4 is arranged at the lower part in the valve sleeve 5, the limit sleeve 8 is arranged at the upper part in the valve sleeve 5, the spring 3 is arranged in the valve core 4, the upper end of the spring 3 is connected with the valve rod 2, the lower part of the adjusting spring 3 is guided by an inner hole of the valve core 4, and the upper part of the adjusting spring is guided by the valve rod 2. The adjusting rod 1 passes through the valve cover 6, the valve rod 2 is contacted with the end face of the adjusting rod 1, the upper end part of the valve cover 6 is provided with the locking nut 11 matched with the adjusting rod 1, the locking nut is used for fixing the adjusting rod 1 at a preset position, and the multifunctional valve is adjusted to have a stopping function of completely blocking the A, B port medium flow by adjusting the distance of the adjusting rod 1 protruding out of the valve cover 6; A. the opening degree of the opening B is smaller than the function of a forward throttling reverse check valve of the maximum stroke of the valve core; the check valve or the safety valve with adjustable pressure is characterized in that the limit sleeve 8 is used for limiting the maximum opening degree of the valve core, and the number of the adjusting rod, the valve core and the spring is one.
The upper end of the adjusting rod is connected with a hand wheel 9, and after the relative position of the hand wheel 9 and the adjusting rod 1 is determined, the hand wheel is fixed through a nut 10.
A sealing structure is arranged between the valve body 7 and the valve sleeve 5, and specifically comprises a second sealing ring 15 between the valve sleeve 5 and the valve cover 6, a third sealing ring 16 between the side wall of the valve sleeve 5 and the valve body 7, and a fourth sealing ring 17 between the valve sleeve base and the valve body 7.
The valve core 4 and the limit sleeve 8 are matched with the valve sleeve 5, the outside of the limit sleeve 8 is fastened through the valve sleeve 5, the lower end of the limit sleeve is used for limiting the maximum stroke of the valve core, and a pore canal is arranged in the valve core 4.
A first sealing ring 14 is arranged between the valve rod 2 and the valve cover 6.
The maximum stroke of the valve element 4 is S0, the maximum stroke of the valve rod 2 is H0, and H0> S0, fig. 1 is a cut-off function. Specifically, the adjusting hand wheel 9 is adjusted, the adjusting rod 1 moves downwards to drive the valve rod 2 to move downwards, the valve rod 2 acts on the lowest end inside the valve core 4, the valve core 4 is pressed on the valve seat at the lower end of the valve sleeve 5, the valve is closed, and in a completely closed state, the valve can be kept in the function by screwing the locking nut 11.
Fig. 2 shows the forward throttle reverse check function. The valve stem 2 travel H is less than the maximum travel S0 of the valve spool 4, i.e. H < S0.
Based on the positions of the valve spool and valve stem in fig. 1. The adjusting hand wheel 9, the adjusting rod 1 moves upwards from the cut-off function position by H, and the valve rod 2 is driven to move upwards from the cut-off function position by H. When the A, B port pressure difference is larger than the set spring force, the valve core 4 is opened upwards, the spring 3 is compressed, the valve is opened, the opening degree is equal to the valve core stroke S, S < S0, and the throttling function is realized. When the A, B port pressure difference is smaller than the set spring force, the valve core 4 is pressed on the valve seat at the lower end of the valve sleeve 5, and the valve is closed and is in a completely cut-off state. The throttle function is thereby achieved, in which the valve is held after the adjustment has been completed by tightening the locking nut 11.
Fig. 3 shows a check valve or relief valve function to achieve a set pressure between maximum and minimum pressures.
The valve rod 2 stroke H is greater than the maximum stroke S0 of the valve core 4 and less than the maximum stroke H0 of the valve rod 2, i.e. S0< H0.
Based on the positions of the valve spool and valve stem in fig. 1. The regulating hand wheel 9, the regulating rod 1 moves upwards from the cut-off function position S, the spring drives the valve rod 2 to move upwards from the cut-off function position H, when the A, B port pressure difference is smaller than the set spring force, the valve core 4 is pressed on the lower end valve seat of the valve sleeve 5, and the valve is closed and is in a complete cut-off state. When the A, B port pressure difference is larger than the set spring force, after the valve core 4 is opened upwards, the spring 3 is compressed, the valve is completely opened, the opening degree is equal to the maximum stroke S0 of the valve core, and the function of the one-way valve is realized. The valve can also be used as a safety valve because the opening pressure is adjustable. The regulating hand wheel 9 realizes the function of a minimum opening pressure check valve or a safety valve when the regulating rod 1 moves upwards by H0 from the cut-off function position. When the regulating lever 1 is moved up S0 from the cut-off function position, a maximum opening pressure check valve or safety valve function is achieved, in which the valve is held by tightening the lock nut 11 after the end of the adjustment.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (3)

1. A method of regulating the function of a single-spool multifunctional valve, comprising a single-spool multifunctional valve comprising: the multifunctional valve comprises a valve cover, a valve body, a valve core, a valve sleeve, a limiting sleeve and a valve rod, and further comprises an adjusting rod, a locking nut and a spring, wherein the valve cover is detachably fixed on the valve body; A. the opening degree of the opening B is smaller than the function of a forward throttling reverse check valve of the maximum stroke of the valve core; the check valve or the safety valve with adjustable opening pressure is characterized in that the limit sleeve is used for limiting the maximum opening degree of the valve core, and the number of the adjusting rod, the valve core and the spring is one;
the maximum stroke of the valve core is S0, the maximum stroke of the valve rod is H0, H0 is more than S0, and the specific function adjusting method comprises the following steps:
the regulation to cut-off function is specifically: the regulating hand wheel is used for regulating the rod to move downwards to drive the valve rod to move downwards, the valve rod acts on the lowest end in the valve core to press the valve core on the valve seat, and the valve is closed and is in a completely cut-off state;
the function of regulating forward throttling and reverse stopping is specifically as follows: the regulating hand wheel, the regulating rod moves upwards from the cut-off function position by H, the valve rod is driven to move upwards from the cut-off function position by H < S0, when the pressure difference of the opening of the valve A, B is larger than the set spring force, the valve core is opened upwards, the spring is compressed, the valve is opened, the opening degree is equal to the valve core stroke S, and the throttling function is realized; when the pressure difference of the opening of the valve A, B is smaller than the set spring force, the valve is in a complete cut-off state;
adjust to check valve or relief valve function: the regulating hand wheel, the regulating rod moves upwards from the stop function by H, the spring drives the valve rod to move upwards from the stop function position by H, S0 is less than H0, and when the A, B port pressure difference is less than the set spring force, the valve port is closed; when the A, B port pressure difference is larger than the set spring force, the valve port is opened, the maximum opening degree defined by the limiting sleeve is equal to the maximum stroke S0 of the valve core, and the function of a one-way valve or a safety valve with adjustable opening pressure is realized.
2. The method of claim 1, wherein the spring is guided in a lower portion by a valve core bore and in an upper portion by a valve stem.
3. The method of claim 1, wherein the amount of spring compression of the spring in the valve core is set by adjusting the stem position driven by the stem; the maximum opening of the valve port is limited by the limit sleeve, and is unchanged when the valve port is used as a check valve or a safety valve.
CN202010224298.XA 2020-03-26 2020-03-26 Single-valve-core multifunctional valve and function adjusting method thereof Active CN111271507B (en)

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CN111271507B true CN111271507B (en) 2023-08-01

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CN112472882B (en) * 2020-11-26 2023-03-14 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 Thoracocentesis drainage device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2437909Y (en) * 2000-05-29 2001-07-04 梁海明 Multifunctional intelligent opening-and-closing stop valve

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US20050145809A1 (en) * 2004-01-05 2005-07-07 Wen-Tsong Lee Multifunctional valve device
CN102588635A (en) * 2011-07-21 2012-07-18 天津市国威给排水设备制造有限公司 Return stop valve
CN203258122U (en) * 2013-05-31 2013-10-30 宁波永享铜管道有限公司 Non-return stop valve
CN104896155A (en) * 2015-06-09 2015-09-09 许炎章 Stop check valve for industrial refrigeration
CN205155182U (en) * 2015-11-27 2016-04-13 安徽杰克耐腐泵阀有限公司 By dual -purpose valve of non return
CN211820974U (en) * 2020-03-26 2020-10-30 一重集团大连工程技术有限公司 Single-spool multifunctional valve

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2437909Y (en) * 2000-05-29 2001-07-04 梁海明 Multifunctional intelligent opening-and-closing stop valve

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