CN110260032A - A kind of push type high pressure valve and valve opening method - Google Patents
A kind of push type high pressure valve and valve opening method Download PDFInfo
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- CN110260032A CN110260032A CN201910554492.1A CN201910554492A CN110260032A CN 110260032 A CN110260032 A CN 110260032A CN 201910554492 A CN201910554492 A CN 201910554492A CN 110260032 A CN110260032 A CN 110260032A
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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
- 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
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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
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The present invention relates to a kind of push type high pressure valve and valve opening methods, belong to high pressure valve field, solve in the prior art that push type high pressure valve valve opening force is big, the high problem of the split stroke of valve sensibility of flow velocity.Level-one valve plug is nested in second level valve plug by the present invention in such a way that second level valve is nested, and second level valve plug is hollow structure and opens up venthole, and by the small-sized of level-one valve plug, the valve opening force of level-one valve is opened in reduction；After level-one valve is opened, internal high-pressure gas evolution reduces the pressure difference inside and outside second level valve plug, reduces valve opening force needed for opening second level valve, and level-one valve plug continued advancement pushes second level valve to open.The present invention is nested by second level valve, and level-one valve, second level valve are successively opened, and the susceptibility of the split stroke of valve of flow velocity, realizes the control to the fluid flow rate during valve opening when reducing valve opening while reducing valve opening force.
Description
Technical field
The present invention relates to high pressure valve technical field more particularly to a kind of push type high pressure valve and valve opening methods.
Background technique
High pressure valve be widely used in superhard material manufacture, chemical industry, petrochemical industry, ultra-high static pressure squeeze, metal at
The fields such as type.It can be used for controlling the flowing of the various types fluid such as empty gas and water, steam, mud, oil product and liquid metal.According to
Particular use, structure are different, there is high-pressure ball valve, high-pressure stop valve, pressure reducing valve etc..According to mode of operation, it is further divided into pressing
Formula and two kinds rotary.Due to easy to use, high reliablity is widely used rotation gate.And the use of push type valve
It is limited in scope, but its function and usage scenario cannot be substituted with rotation gate.
On high pressure air rifle (PCP) and special type knife, high pressure valve is also widely used.Such as WASP high pressure gas cylinder dagger,
It is a kind of diving cutter.There is the air hose of a high compression inside knife handle, knife handle has a button control valve, presses
After going, super high pressurized air will thin pipe of the moment in blade spray, to possess the function that universal cutter can not have.
On high pressure air rifle (PCP), high pressure valve is also one of essential device.Major part high pressure air rifle is all by hitting at present
Hammer hits high pressure valve, so that gas circuit is opened the quality of high pressure valve, can the function of not only affecting air gun be realized, have an effect on
Bullet goes out the shock conditions of the consistency and air gun of thorax speed during percussion, and then influences fire accuracy.
On air gun and WASP high pressure gas cylinder dagger, what is used is all a kind of push type high pressure valve.Push type high pressure valve
One important feature parameter of door is exactly the size of pressing force.The structure of common push type valve is as shown in figure 8, existing pressing
Valve is widely used in the environment under low pressure in life, such as mosquito eradication is equal similar in various daily necessities by spraying.Under normal conditions, this
The inside and outside differential pressure of kind valve is smaller, is suitble to manual valve opening.Under high-pressure situations, then it is generally necessary to violent shock valve opening.
Existing push type valve in use, there is following deficiency: 1, press the air pressure of valve opening force and high pressure gas at
Direct ratio, and it is usually excessive.To open valve, it is usually required mainly for overcome the pressure difference between high pressure gas and low pressure gas, caused by valve opening
Power.Valve opening force is directly proportional to the valve block area of valve and inside and outside differential pressure value.When inside and outside differential pressure is larger, manual operation is very tired
Difficulty, and if reducing valve block area, venthole reduces, and requirement cannot be reached by being likely to result in ventilatory capacity；2, flow speed is difficult
With control.The case where flow velocity is adjusted is wanted in use, being frequently encountered in valve opening, and common valve is in valve opening
Afterwards, the relationship between pressing stroke and flow velocity is very sensitive, and a small amount of pressing stroke will result in dramatically increasing for flow velocity.Cause
This, valve just reaches maximal ventilatory volume state after usually pressing, difficult to realize to manually control.
Summary of the invention
In view of above-mentioned analysis, the present invention is intended to provide a kind of push type high pressure valve and valve opening method, existing to solve
When the internal gas high pressure of some push type high pressure valves, in the biggish situation of inside and outside differential pressure, the valve opening of pressing valve opening needs
Power is big, and manual operation is extremely difficult, and shock valve opening dynamics is bigger, and whole vibration is bigger, and precision is poorer, and if reducing valve block
Area, then venthole reduces, and requirement cannot be reached by being likely to result in ventilatory capacity, moreover, the usual valve opening row of push type high pressure valve
Journey very little, and the corresponding fluid flow rate variation of the valve opening stroke of very little is very greatly, it is extremely difficult to the control of flow velocity.
Therefore, it is necessary to design a kind of lesser valve opening force of push type high pressure valve realization to open high pressure valve, drop simultaneously
Low flow velocity realizes the control to the fluid flow rate during valve opening to the susceptibility of stroke.
The purpose of the present invention is mainly achieved through the following technical solutions:
A kind of push type high pressure valve, comprising: pressing lever, valve housing, level-one valve plug, second level valve plug and height
It calms the anger chamber；
Pressing lever is fixedly connected with level-one valve plug；
Level-one valve plug is nested in second level valve plug；The inside of valve housing is arranged in second level valve plug, and
It is installed with valve housing by taper-face contact；Gas outlet is set on valve housing；
Second level valve plug is hollow structure, and the first venthole is arranged on second level valve plug；The connection of first venthole
High pressure air cavity.
Specifically, level-one valve plug is frustum structure.
Specifically, second level valve plug includes: second level plug main body and second level plug bottom；Second level plug main body and second level
It is fixedly connected or is structure as a whole between plug bottom.
Specifically, conical bore is provided in second level plug main body；Level-one valve plug is nested in conical bore, and one-step valve
Door plug is pressed in second level plug main body under the intracavitary high pressure gas effect of high pressure gas.
Specifically, the outside of second level plug main body is provided with circular conical surface；Valve housing and conical surface contact simultaneously seal, and two
Grade valve plug is pressed on valve housing under the effect of high pressure air cavity high pressure gas.
Specifically, port block is additionally provided on second level valve plug, port block is for blocking gas outlet.
Specifically, the second venthole is provided on port block, the aperture of the second venthole is less than the aperture of gas outlet.
Specifically, the first spring is set between level-one valve plug and second level valve plug, and the first spring is for realizing one
It is resetted after the pressing of grade valve plug.
Specifically, connector is set on high pressure air cavity, second spring is set between second level valve plug and connector, is connected
Part is used to install second spring and limit the pressing stroke of second level valve plug；Second spring is for realizing second level valve plug
It is resetted after pressing.
The valve opening method of push type high pressure valve, comprising the following steps:
Step S1: apply pressing force to pressing lever, level-one valve plug is pushed to open；
Step S2: continuing to press on level-one valve plug to the movement of the second level plug bottom direction of second level valve plug, until
Level-one valve plug is contacted with second level plug bottom；
Step S3: increasing the pressing force that is applied on pressing lever, by level-one valve plug push second level valve plug to
High pressure gas cavity direction is mobile, and valve is fully opened.
The present invention one of at least has the advantages that:
1, push type high pressure valve of the invention is using multistage nested plug.It is stifled by high pressure valve plug multiple valve
The mode that head is successively opened, level-one valve plug are nested in the conical bore of second level valve plug, its face area are designed
It is smaller, the initial valve opening pressure-bearing surface area of level-one valve can be more reduced, is further able to reduce initial valve opening force, level-one valve is beaten
Open second level valve after opening again, introduce high pressure gas compensation flap pressure after opening level-one valve plug, reduce second level valve into
One step open required for dynamics, finally realize using lesser pressing valve opening force opening high pressure valve, make it is of the invention by
Pressure type high pressure valve application is more convenient, and controllability is high, has wide range of applications.
2, push type high pressure valve of the invention passes through the process of multistage valve opening, improves flow velocity and stroke during valve opening
Relationship reduces the susceptibility between flow velocity and pressing stroke, keeps the range of available flow velocity wider.
3, the present invention the first spring is set between level-one valve plug and second level valve plug, second level valve plug with
Second spring is set between high pressure air cavity, and compressed spring when valve opening is resetted when closing valve after valve opening using spring force.This hair
Sealing and reset between bright level-one valve plug, second level valve plug and valve housing rely primarily on inside and outside pressure difference,
Spring auxiliary reset is utilized when pressure difference is smaller.
It in the present invention, can also be combined with each other between above-mentioned each technical solution, to realize more preferred assembled schemes.This
Other feature and advantage of invention will illustrate in the following description, also, certain advantages can become from specification it is aobvious and
It is clear to, or understand through the implementation of the invention.The objectives and other advantages of the invention can by specification, claims with
And it is achieved and obtained in specifically noted content in attached drawing.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not to be construed as limiting the invention, in entire attached drawing
In, identical reference symbol indicates identical component.
Fig. 1 is push type high pressure valve structural schematic diagram of the invention；
Fig. 2 is push type high pressure valve model cross-sectional view one of the invention；
Fig. 3 is push type high pressure valve model cross-sectional view two of the invention；
Fig. 4 is second level valve stopper structure schematic diagram of the invention；
Fig. 5 is second level valve plug illustraton of model of the invention；
Fig. 6 is second level valve plug model cross-sectional view of the invention；
Fig. 7 is push type high pressure valve valve opening process schematic of the invention；
Fig. 8 is the structure of common push type valve in the prior art.
Appended drawing reference:
1- pressing lever；2- valve housing；The gas outlet 3-；4- level-one valve plug；5- second level valve plug；51- second level is stifled
Head main body；52- second level plug bottom；53- port block；The first venthole of 54-；The second venthole of 55-；511- conical bore；
512- circular conical surface；6- high pressure air cavity；7- connector；The first spring of 8-；9- second spring.
Specific embodiment
Specifically describing the preferred embodiment of the present invention with reference to the accompanying drawing, wherein attached drawing constitutes the application a part, and
Together with embodiments of the present invention for illustrating the principle of the present invention, it is not intended to limit the scope of the present invention.
Embodiment 1
A specific embodiment of the invention, discloses a kind of push type high pressure valve, as shown in Figure 1, comprising: pressing lever
1, valve housing 2, level-one valve plug 4, second level valve plug 5 and high pressure air cavity 6.In high pressure air cavity 6 store high pressure gas (or
Other high-pressure fluids), valve housing 2 is fixedly connected with high pressure air cavity 6.Second level valve plug 5 is arranged in valve housing 2
Portion, and with valve housing 2 by taper-face contact install, push type high pressure valve structural schematic diagram of the invention referring to fig. 2, Fig. 3.
In other words, circular conical surface 512 is arranged in the external of second level valve plug 5, and the 2 inside conical surface of valve housing is contacted with circular conical surface 512, and
Valve housing 2 is sealed with second level valve plug 5 by circular conical surface 512, while internal high-pressure gas compresses second level valve plug 5
On valve housing 2.
Specifically, gas outlet 3 is set on valve housing 2, the gas communication port after opening as valve.
Specifically, level-one valve plug 4 is nested in second level valve plug 5, and level-one valve plug 4 is frustum structure, and
Level-one valve plug 4 is fixedly connected with pressing lever 1.
Specifically, second level valve plug 5 can be divided into three parts: second level plug main body 51, second level plug bottom 52 and port
Block 53.Further, the first venthole 54 is set in second level plug main body 51, is provided with the second venthole on port block 53,
As shown in Fig. 4, Fig. 5, Fig. 6.Conical bore 511 and external circular conical surface 512 are provided in second level plug main body 51, level-one valve is stifled
First 4 are nested in conical bore 511, and second level valve plug 5 is formed by circular conical surface 512 and valve housing 2 and sealed.
That is: the outer end (close to one end of valve housing 2) of second level valve plug 5 is provided with conical bore 511, and conical bore 511 is
Through-hole, and conical bore 511 is used for nested level-one valve plug 4.
Frustum type structure is set as outside one end of the setting conical bore of second level valve plug 5 with circular conical surface 512, circular cone
Face 512 and valve housing 2 cooperate.
Second level plug main body 51 is fixedly connected or is structure as a whole with second level plug bottom 52, second level plug main body 51 and two
Grade plug bottom 52 constitutes an inc middle cavity, level-one valve plug 4 when middle cavity is opened as level-one valve
Mobile space.
That is, main structure of 51 part of second level plug main body as second level valve plug 5, on the one hand provides gas circuit
Channel, on the other hand as the sealed interface of level-one valve plug 4 and installation interface.In assembling process, first by one-step valve
Door plug 4 is put into the conical bore 511 of second level valve plug 5, then again by second level plug bottom 52 and second level plug main body 51
Connection.Second level plug bottom 52 is connected through a screw thread or is welded as a whole with second level plug main body 51, and second level plug bottom 52 is used
To limit the pressing stroke of level-one valve plug 4.
Circular conical surface 512 and the cooperation of valve housing 2 outside second level valve plug 5 realize sealing, and in high pressure air cavity 6
Second level valve plug 5 is pressed on valve housing 2 by high pressure gas, at the same valve housing 2 can limit second level valve plug 5 to
Movement on the outside of valve.
Further, multiple first ventholes 54 are provided in second level plug main body 51, as shown in Fig. 4, Fig. 5, Fig. 6.The
One venthole 54 is connected to high pressure air cavity 6, and internal high-pressure gas is enable to enter second level valve plug 5 by the first venthole 54
In middle cavity, level-one valve plug 4 is pressed on the conical bore 511 of second level valve plug 5, while internal high pressure can be made
Gas is passed to the outside of second level valve plug 5 after level-one valve opening, reduces the inside and outside pressure difference of second level valve plug 5.
It is further possible to be arranged the first venthole 54 on second level plug bottom 52, it is only necessary to guarantee one-step valve
Door plug 4 and second level plug bottom 52 will not block the first venthole 54 when contacting.
Further, in order to quickly improve the gas pressure intensity in 2 cavity of valve housing after level-one valve opening, reduce two
Pressure difference suffered by grade valve plug 5 between inside high pressure gas and outside low pressure gas, on second level valve plug 5 also
It is provided with port block 53, port block 53 is mounted in second level plug main body 51, and port block 53 can block gas outlet 3.
When port block 53 is opened for level-one valve, reduce the area of gas outlet 3, increases the pressure nearby of gas outlet 3, reduce secondary valve
Power required for door is opened.After level-one valve plug 4 is opened, in order to maintain gas to circulate, high pressure valve is made to remain opening
State is provided with the second venthole 54 on port block 53.5 outside pressure of second level valve plug is improved simultaneously in order to realize
Effect makes the aperture of the second venthole 54 be less than the aperture of gas outlet 3.
That is: the effect of port block 53 is partial occlusion gas outlet 3, and second level valve plug 5 is matched with valve housing 2
After closing installation, port block 53 can partially block gas outlet 3, when opening for level-one valve plug 4, reduce practical when outlet
The area of gas circulation.The second venthole 55 is provided on port block 53, the aperture of the second venthole 55 is less than the hole of gas outlet 3
Diameter, practical outlet hole area are the hole area of the second venthole 55 opened up on port block 53.
Reduce the gas flow area at gas outlet 3, after opening level-one valve plug 4, internal high-pressure gas is temporarily stored into
In 2 inner cavity of valve housing between gas outlet 3 and level-one valve plug 4, the gas pressure intensity for improving 3 inside of gas outlet improves two
The pressure in 5 outside of grade valve plug, reduces the inside high pressure (high pressure gas intracavity gas) and outside low pressure of second level valve plug 5
Pressure difference between (3 air pressure inside of gas outlet) further reduces valve opening force required for opening second level valve plug 5.
Specifically, pressing lever 1 is fixedly connected with level-one valve plug 4, can be pushed by applying pressing force to pressing lever 1
Level-one valve plug 4 is mobile to open level-one valve, further increases pressing stroke, can further push second level valve plug 5
It is mobile to open second level valve.
The valve area of valve opening for the first time is reduced by providing secondary (multiple) valve opening process, utilizes one-step valve by the present invention
Door plug discharges certain high-pressure medium after opening to external environment, the inside and outside differential pressure of reduction second level valve, then by second level valve
Plug 5, which is opened, completes complete valve opening process.
The homing action of level-one valve plug 4 and second level valve plug 5 when further, in order to realize that valve is closed, one
First spring 8 is set between grade valve plug 4 and second level valve plug 5, the first spring 8 is for realizing level-one valve plug 4
Homing action after pressing.Connector 7 is set on high pressure air cavity 6, second bullet is set between second level valve plug 5 and connector 7
Spring 9, second spring 9 is for realizing the homing action after the pressing of second level valve plug 5.
Level-one valve plug 4 in the closed situation, by the effect of inside and outside differential pressure and the spring thrust of the first spring 8, is pressed
Tightly on the conical bore 511 of second level valve plug 5, taper sealing is utilized between level-one valve plug 4 and second level valve plug 5, together
When second level valve plug 5 conical bore 511 limit level-one valve plug 4 to mobile on the outside of valve, as shown in Figure 1.
Second level valve plug 5 by inside and outside differential pressure, the active force of the spring thrust of second spring 9 and level-one valve plug 4,
It is pressed on valve housing 2, utilizes taper sealing with valve housing 2, while valve housing 2 limits second level valve plug 5 to valve
Outer side of door is mobile, as shown in Figure 1.Wherein, spring thrust is smaller, is mainly used for being automatically closed in no external force valve,
I.e. in the case where valve inside and outside differential pressure very little, reset level-one valve plug 4 and second level valve plug 5 using spring force, it is complete
At the closing of valve.
When implementation, pressing force is applied to pressing lever 1, level-one valve plug 4 is pushed to open, the high pressure gas in high pressure air cavity 6
Body is spilled over in the internal cavities of valve housing 2, improves the pressure outside second level valve plug 5, and it is stifled to reduce second level valve
The pressure difference of first 5 inside high pressure gas and outside low pressure gas reduces valve opening force required for opening second level valve plug 5.
Valve pressing force disappear after, level-one valve plug 4 and second level valve plug 5 under the action of spring force and internal and external pressure difference,
Restore to closed state.
The present invention reduces resistance when high pressure valve valve opening by the composite structure using second level (multistage) valve.Together
When, valve flow velocity is improved with the variation tendency of pressing stroke, under conditions of not influencing valve maximum flow rate, improves pressing
The performance of formula valve.
Embodiment 2
The present embodiment provides a kind of valve opening method of push type high pressure valve, valve opening process as shown in fig. 7, specifically include with
Lower step:
Step S1: apply pressing force to pressing lever 1, level-one valve plug 4 is pushed to open；
Step S2: continuing to press on level-one valve plug 4 and move to 52 direction of second level plug bottom of second level valve plug 5,
Until level-one valve plug 4 is contacted with second level plug bottom 52；
Step S3: increasing the pressing force being applied on pressing lever 1, pushes level-one valve plug 4 and second level valve plug 5 same
It walks to the movement of high pressure gas cavity direction, valve is fully opened.
Specifically, in step S1: when pressing level-one valve plug 4, the resistance for needing to overcome is to act on level-one valve to block up
Inside and outside differential pressure on first 4.When level-one valve plug 4 is opened, the cross-sectional area of fluid outlet is S1, S1Size depend on level-one
The size of 4 lower end surface of valve plug (large end face), by the smaller of the size design of level-one valve plug 4, fluid when valve opening
Area S1It is smaller, therefore, S1Can be designed as the cross-sectional area of very little, when second level valve plug 5 is opened, fluid outlet it is transversal
Area is S2, and S2Greater than S1。
Other push type valve mechanisms are compared, under identical flow velocity design condition, the present invention opens level-one valve plug 4
Required valve opening pressing force is F1=(Ph-Pl)×S1, wherein PhThe pressure of gas, P in high-pressure bottlelFor extraneous low-pressure area
The pressure (usually atmospheric pressure) of gas；And under the conditions of identical inside and outside differential pressure, pressing force needed for normal press formula valve is F0
=(Ph-Pl)×(S1+S2).Therefore, by designing the structural parameters of the level-one valve plug 4 of very little, it can reduce fluid cross-section
Area S1, further, it is possible to required pressing force F when substantially reducing valve opening1。
In step S2, under pressing force effect, after level-one valve plug 4 is contacted with second level valve plug 5, second level valve is stifled
The connection of first 5 not completely enclosed higher-pressure regions and outer low pressure area.Pass through the first venthole 54 and on second level valve plug 5
Gap between two ventholes 55 and level-one valve plug 4 and second level valve plug 5, high-pressure fluid medium can be by internal high
Pressure area moves to extraneous low-pressure area.
When the second level plug bottom 52 of level-one valve plug 4 and second level valve plug 5 contacts, it is stifled to keep in opening level-one valve
Internal high-pressure gas compensation flap pressure is introduced after first 4, partial interior high pressure gas flows into the middle cavity of secondary valve door plug 5
Interior, pressure state at this time is internal high-pressure gas pressure PhGreater than the pressure P of gas in 5 middle cavity of second level valve plugl′
Greater than ambient pressure PlThat is: Ph> Pl' > Pl.The inside and outside pressure difference of second level valve plug 5 is (Ph-Pl'), it is lower than initial one-step valve
Inside and outside gas pressure intensity difference when door plug 4 is opened is (Ph-Pl)。
It is considered that 5 outer low pressure P of second level valve plugl' height and level-one valve plug 4 extent of opening and go out
The cross-sectional area of port 3 is related, and the circulation area of the bigger gas outlet 3 of the opening of level-one valve plug 4 is smaller, gas outlet 3 and second level
The pressure P of gas between valve plug 5l' bigger, open the pressure difference (P overcome required for second level valve plug 5h-Pl') more
Small, the valve opening force for opening second level valve plug 5 is smaller.
Therefore, gas outlet 3 is designed as the blocking of the port block 53 by second level valve plug 5, opens on port block 53
There is the second venthole 55 that aperture is minimum, the area of section of the second venthole 55 of design is 0.1S1, the second valve plug 5 opening
Before, the part that the second venthole 55 is overlapped with gas outlet 3 is the size in real gas circulation aperture, the i.e. practical gas of gas outlet 3
Body circulation area is about 0.1S1, it is measured through test, when push type high pressure valve level-one valve plug 4 of the invention fully opens,
P can be effectively improvedl' to 0.7PhSize.
Second level valve plug 5 continues to be pressed on valve housing 2 under the action of pressure difference and fluid motion resistance.It is logical
Cross the pressing stroke of control level-one valve plug 4, the flow velocity size of adjustable gate.Level-one valve plug 4 reaches range
It is contacted afterwards with second level valve plug 5, continues growing pressing stroke, openable second level valve plug 5 at this time.
Specifically, in step S3: continuing to 1 applied force of pressing lever, the pressing force that pressing lever 1 is subject to is through level-one valve plug
4 pass to second level valve plug 5, and second level invention plug 5 is pushed to open, and the flow velocity of valve and second level valve plug 5 is outer at this time
The pressing stroke of portion's dimensional parameters and second level valve plug 5 is related, can by controlling the pressing stroke of second level valve plug 5
The flow velocity size of control valve.
After being opened due to level-one valve plug 4, the pressure difference for acting on second level valve plug 5 is reduced, and opens second level at this time
The valve opening force of valve plug 5 is F2=(Ph-Pl′)×S2, acting on required power on pressing lever is F=(Ph-Pl′)×(S1+
S2).After opening second level valve plug 5, the port block 53 on second level valve plug 5 no longer hinders gas outlet 3, and valve is complete
It opens, valve flow velocity reaches maximum.
As it can be seen that the method for valve plug two-stage (multistage) nesting through the invention acts under the conditions of identical flow velocity
Maximum pressing force on pressing lever 1 is F=(Ph-Pl′)×(S1+S2) or F=(Ph-Pl)×S1, needed lower than common valve
Pressing force F0=(Ph-Pl)×(S1+S2).It is F that push type high pressure valve of the invention, which acts on the maximum pressing force on pressing lever 1,
=(Ph-Pl′)×(S1+S2) when, with Pl' reach 0.7PhIt calculates, maximum pressing force can be reduced to the 30% of common valve.
Specifically, the present invention by pressure valve during use, pressing force variation pattern be gradual increase, then by
It is decrescence small, be not in completely can not valve opening the case where.
Operator is pushed in 4 opening procedure of level-one valve plug by pressing lever 1, the compression of level-one valve plug 4 first
Spring 8,4 stroke of level-one valve plug, which is gradually increased, to be pushed in 5 opening procedure of second level valve plug, and second level valve plug 5 compresses
Second spring 9.After operator disappears to the pressing force of valve, effect of the two-stage valve plug in spring force and internal and external pressure difference
Under, restore to closed state.
Embodiment 3
In the present embodiment, a kind of alternative solution of the push type high pressure valve of embodiment 1 is provided, using double pressing levers
Mode realizes second level valve opening process.Two pressing levers are connect with level-one valve plug 4 and second level valve plug 5 respectively, control
The order valve opening of level-one valve plug 4 and second level valve plug 5, it may be assumed that first pressing lever pushes and pulls level-one valve plug 4, realizes
The opening and closing of level-one valve plug；Second pressing lever acts directly on second level valve plug 5.By the way that two bar groups are closed
Come, realizes that two pressing levers successively act during primary pressing, it is final to realize low thrust valve opening.
In the scheme of the present embodiment, two-stage valve plug is used altogether, it is practical that three-level even more multiple valve also may be selected
Plug is multistage nested, and the valve opening process of high pressure valve is more subdivided into multistage valve opening process, realizes low thrust valve opening and split
Valve process accurately controls.
Push type high pressure valve of the invention one of at least has the advantages that:
1, reduce valve opening force, promote the reliability of valve opening operation.
The valve area of valve opening for the first time is reduced by providing secondary (multiple) valve opening process, utilizes one-step valve by the present invention
Door plug discharges certain high-pressure medium after opening to external environment, the inside and outside differential pressure of reduction second level valve, then by second level valve
Plug 5, which is opened, completes complete valve opening process.Level-one valve of the invention is reduced by reducing 4 face area of level-one valve plug
Valve opening force, second level valve reduce maximum valve opening force by reducing the inside and outside differential pressure of second level valve plug 5.
The present invention be substantially reduced initial valve opening force and maximum valve opening force can by way of multistage nesting.It compares
Common valve can reduce 70% or more.In practical applications, the operation difficulty of push type valve is reduced, push type high pressure valve is increased
The application range of door.Such as on high pressure air rifle, hammer dynamics can be reduced, mitigates impact, improves fire accuracy.
2, during the valve opening of push type high pressure valve of the invention, flow velocity is gradually transitions maximum flow rate from zero.Make valve
Door can have small flow velocity under small pressing stroke, while not influence its maximum flow rate.In practical applications, can be used to
Low flow velocity high-pressure fluid is obtained, also can get high flow rate high-pressure fluid.In the field for needing the flow velocity to high-pressure fluid to be controlled
It closes, can directly operate valve and carry out certain manipulation.
3, the present invention presses pressure valve during use, and pressing force variation pattern is gradual increase, then gradually subtracts
It is small, be not in completely can not valve opening the case where.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of push type high pressure valve characterized by comprising pressing lever (1), valve housing (2), level-one valve plug
(4), second level valve plug (5) and high pressure air cavity (6)；
The pressing lever (1) is fixedly connected with the level-one valve plug (4)；
The level-one valve plug (4) is nested in the second level valve plug (5)；Second level valve plug (5) setting exists
The inside of the valve housing (2), and installed with valve housing (2) by taper-face contact；It is provided on the valve housing (2)
Port (3)；
The second level valve plug (5) is hollow structure, and the first venthole (54) are arranged on the second level valve plug (5)；
First venthole (54) is connected to the high pressure air cavity (6).
2. push type high pressure valve according to claim 1, which is characterized in that the level-one valve plug (4) is frustum
Structure.
3. push type high pressure valve according to claim 2, which is characterized in that the second level valve plug (5) includes: two
Grade plug main body (51) and second level plug bottom (52)；The second level plug main body (51) and second level plug bottom (52) it
Between be fixedly connected or be structure as a whole.
4. push type high pressure valve according to claim 3, which is characterized in that be arranged on the second level plug main body (51)
There are conical bore (511)；The level-one valve plug (4) is nested in the conical bore (511), and the level-one valve plug
(4) it is pressed on the second level plug main body (51) under the effect of high pressure air cavity (6) mesohigh gas.
5. push type high pressure valve according to claim 4, which is characterized in that the outside of the second level plug main body (51)
It is provided with circular conical surface (512)；The valve housing (2) contacts and seals with circular conical surface (512), and the second level valve plug
(5) it is pressed on the valve housing (2) under the effect of high pressure air cavity (6) high pressure gas.
6. push type high pressure valve according to claim 1-5, which is characterized in that the second level valve plug
(5) it is additionally provided on port block (53), the port block (53) is for blocking the gas outlet (3).
7. push type high pressure valve according to claim 6, which is characterized in that be provided on the port block (53)
Two ventholes (54), the aperture of second venthole (54) are less than the aperture of the gas outlet (3).
8. push type high pressure valve according to claim 1, which is characterized in that the level-one valve plug (4) and second level
It is arranged between valve plug (5) the first spring (8), after pressing of first spring (8) for realizing level-one valve plug (4)
It resets.
9. push type high pressure valve according to claim 1, which is characterized in that connection is arranged on the high pressure air cavity (6)
Part (7) is arranged second spring (9) connector (7) and is used between the second level valve plug (5) and the connector (7)
Second spring (9) are installed and limit the pressing stroke of second level valve plug (5)；The second spring (9) is for realizing described two
It is resetted after the pressing of grade valve plug (5).
10. the valve opening method of push type high pressure valve described in -9 according to claim 1, which comprises the following steps:
Step S1: apply pressing force to pressing lever (1), level-one valve plug (4) is pushed to open；
Step S2: it continues to press on level-one valve plug (4) and is moved to second level plug bottom (52) direction of second level valve plug (5)
It is dynamic, until level-one valve plug (4) is contacted with second level plug bottom (52)；
Step S3: increasing the pressing force being applied on pressing lever (1), pushes second level valve plug by level-one valve plug (4)
(5) mobile to high pressure gas cavity direction, valve is fully opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910554492.1A CN110260032B (en) | 2019-06-25 | 2019-06-25 | Push type high-pressure valve and valve opening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910554492.1A CN110260032B (en) | 2019-06-25 | 2019-06-25 | Push type high-pressure valve and valve opening method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110260032A true CN110260032A (en) | 2019-09-20 |
| CN110260032B CN110260032B (en) | 2020-11-06 |
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ID=67921279
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910554492.1A Active CN110260032B (en) | 2019-06-25 | 2019-06-25 | Push type high-pressure valve and valve opening method |
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| CN (1) | CN110260032B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112206940A (en) * | 2020-10-09 | 2021-01-12 | 王小安 | High-pressure water gun with compensation structure |
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| CN88207370U (en) * | 1988-06-25 | 1988-12-28 | 北京市劳动保护科学研究所 | Low noise valve |
| CN2315359Y (en) * | 1997-03-10 | 1999-04-21 | 陈金富 | Multifunction automatic water saving device |
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| CN201448501U (en) * | 2009-05-22 | 2010-05-05 | 张家和 | Pressure relief valve |
| CN201539617U (en) * | 2009-11-24 | 2010-08-04 | 杨颖杰 | Manual exhaust valve for radiators |
| US20160025228A1 (en) * | 2013-12-16 | 2016-01-28 | Honeywell International Inc. | Valve over-travel mechanism |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87200963U (en) * | 1987-01-24 | 1988-01-20 | 汪惠平 | Leakproof auto-shut valve |
| CN88207370U (en) * | 1988-06-25 | 1988-12-28 | 北京市劳动保护科学研究所 | Low noise valve |
| CN2315359Y (en) * | 1997-03-10 | 1999-04-21 | 陈金富 | Multifunction automatic water saving device |
| CN2606223Y (en) * | 2003-03-11 | 2004-03-10 | 郑子炜 | Antiburning stopcock for drinker |
| CN201448501U (en) * | 2009-05-22 | 2010-05-05 | 张家和 | Pressure relief valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112206940A (en) * | 2020-10-09 | 2021-01-12 | 王小安 | High-pressure water gun with compensation structure |
| CN112206940B (en) * | 2020-10-09 | 2022-05-17 | 王小安 | High-pressure water gun with compensation structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110260032B (en) | 2020-11-06 |
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