CN106641281A

CN106641281A - Valve

Info

Publication number: CN106641281A
Application number: CN201710057985.5A
Authority: CN
Inventors: 宋豫; 胡中望
Original assignee: Shanghai Zhenghua Heavy Industries Co Ltd
Current assignee: Shanghai Zhenghua Heavy Industries Co Ltd
Priority date: 2017-01-23
Filing date: 2017-01-23
Publication date: 2017-05-10
Anticipated expiration: 2037-01-23
Also published as: CN106641281B

Abstract

The invention relates to a valve which comprises a valve body and a valve element. A first flow channel and a second flow channel which communicate with each other are arranged in the valve body. The cross sectional area of the first flow channel is larger than that of the second flow channel. The valve element comprises a head and a valve rod located in the first flow channel. A plug-in component detachably connected with the valve body is arranged at the combined position of the first flow channel and the second flow channel and provided with a through hole for allowing fluid to pass therein. The cross sectional area of the through hole is smaller than that of the second flow channel. When the valve element does reciprocating motion in the longitudinal direction, connection and disconnection of the first flow channel and the second flow channel can be achieved through opening and closing of the through hole and the head. The matching area of the valve body can be effectively protected through the plug-in component, only the plug-in component needs to be replaced when the plug-in component is damaged under the erosion action of fluid media and impurities in the fluid media, and the maintenance cost of a fluid transmission system is remarkably reduced. When the plug-in component needs to be disassembled, the plug-in component can be ejected out only by ejecting the end face, located in the second flow channel, of the plug-in component through an ejection tool, and disassembly and assembly are convenient.

Description

A kind of valve

Technical field

The present invention relates to Fluid-transmission field, more particularly to a kind of valve.

Background technology

Transmission fluid is widely used in the field such as military project, space flight, civilian, and its main propagation medium is empty air-liquid Force feed, emulsion, pure water etc..In transmission fluid, when medium is transmitted in the duct, need to carry out controlling stream by valve The direction of transfer of body, flow and pressure.Valve generally includes valve element and inside is provided with the valve body of runner, comprising a stream in runner The region that road section changes, the head of valve element is arranged in this areas adjacent.Valve element is by along its longitudinal reciprocating motion, making The gap obtained between the head and the flow path wall in the region of valve element changes, so that being sent out by the fluid flow in the region Changing.The flow path wall of above-mentioned cross section of fluid channel point can be engaged the flow of fluid in control valve with valve element, thus by this Region is referred to as the fitting area of valve body, and the fitting area also corresponds to the junction of first flow of the present invention and second flow channel. Valve in use, because the fitting area of valve body is subject to for a long time fluid media (medium) and the wherein erosion of impurity, and in hydraulic pressure The impact of cavitation effect is also had in system, the fitting area of valve body is usually easily damaged.

By taking cone valve as an example, the face that the fitting area of cone valve valve body is engaged is the conical surface, and hence obtain one's name cone valve.Cone valve it is common two Plant version as shown in Figure 1, the first valve body is right angle point side formula, and second valve body is conical surface type.Region A in accompanying drawing 1 The as fitting area of valve body, this region after the work of a period of time, under fluid media (medium) and the wherein erosion of impurity easily It is damaged, the characteristic for causing cone valve is deteriorated, it is impossible to meet the needs of transmission fluid.When the fitting area of valve body is damaged, Generally require to change the even whole valve of whole valve body, maintenance replacement cost is higher.And the valve body of different size cone valve is also not With, depot spare part is required for different valve bodies, cause the increase of quantity in stock and fund.Therefore people take different skills Art means, protect to valve body, so as to extend the service life of valve body.

Such as the U of Chinese patent literature CN 204284524《Hydraulic pressure valve rubber compensation type one-way valve》Disclose a kind of hydraulic valve The compensation check valve of rubber, including valve gap, fairlead, hydraulic valve rubber extruding device, valve cone, valve housing and valve rubber；Clack box The chamber inner side activity of body arranges valve seat；The outer surface of valve seat is engaged with the inner surface of valve housing, and valve is provided between contact surface Seat sealing ring and oil groove, the fuel feed hole of oil groove leads to the outer wall pouring orifice of valve housing；Valve rubber is set between valve seat and valve housing； The lower section of valve rubber arranges hydraulic valve rubber extruding device, and hydraulic valve rubber extruding device is made up of oil pocket and pouring orifice, oil pocket Connected by oilhole with pouring orifice；Valve cone is pressed on valve rubber by valve spring；Valve cone controls its up and down motion by fairlead Track.The patent document is provided with the valve seat for facilitating dismounting and change inside check valve, when valve seat is worn to can not normally make Used time, replacing spare part can be pulled down；When valve rubber abrasion or other reasonses are damaged, according to abrasion or the order of severity damaged, When needing to compensate valve rubber, using hydraulic valve rubber extruding device, accurately valve rubber can be extruded into one section by predetermined backoff amount, With the broken parts before compensation, it is to avoid valve cone and valve seat bump against, it is ensured that check valve normal work.But the compensation device includes valve The devices such as rubber, extrusion device, oil groove, oil pocket, pouring orifice, installation procedure is complex.

The and for example A of Chinese patent literature CN 104747429《A kind of cone valve of rotary spool》Disclose a kind of rotary spool Cone valve, including outer conical valve base and valve element on the valve body, top wire hole is provided with outer conical valve base, interior conical valve base is used as wear-resisting Ring is arranged on outer conical valve base, and form is arranged on valve body, in order to preferably observe the motion of spool valve body, to various situations Make correct process.In order to further increase the persistent form of sealing, rotating vane is welded with valve element so that valve element and inner cone The even wearing of valve seat, sealing is lasting.Valve seat is divided into outer conical valve base and interior conical valve base two parts by the patent application, in cone valve Only internally conical valve base is worn and torn during work, because valve seat is split type, so when cone valve is unsatisfactory for job requirement, only needing Internally conical valve base is changed, and reduces the cost of replacing.But the cone valve of the patent application includes sealing ring, top wire hole, rotation Multiple parts such as blade, manufacture processing is complex with installation procedure.

For another example the U of Chinese patent literature CN 202326186《The split type cone valve of slurry delivery pump》Disclose a kind of slip The split type cone valve of delivery pump, including outer conical valve base and interior conical valve base, outer conical valve base is sealed with interior conical valve base taper fit.This is special Sharp document is by the way that by seat design easy to wear, into outer conical valve base and the assembly of interior conical valve base, taper fit sealing can be notable The consumption of spare part is reduced, weight is mitigated, beneficial to the life-span for improving valve, reduce operating cost.But due to outer conical valve base and interior By taper come fitted seal, sealing effectiveness needs to be guaranteed by other measures conical valve base, such as patent document Disclosed in sealing ring, thus substantially increase the quantity of potted component, improve the installation difficulty of cone valve.In addition, interior conical valve base It is that liftout attachment is ejected by top wire hole, so distance of the inner surface of interior conical valve base away from interior conical valve base center line can not be less than Distance of the top wire hole away from center, this generates certain restriction with regard to the latus rectum of runner in internal conical valve base.

In addition, in patent document disclosed above, when valve body is worn can not normally be used, need with original valve body Model identical valve body is changed, and when there is the valve of various different models in transmission system, needs the various differences of stock The valve body of model, so as to increased the type kind and quantity of standby redundancy.

In sum, how a kind of simply and easily measure is provided, while convenient installation valve can be effectively protected Body, it is to avoid the direct abrasion of valve body, and when the valve of different model produces abrasion, can be carried out more with the valve body of same model Change, that is, strengthen the interchangeability of valve body, so as to reduce the stock of spare part, become Fluid-transmission field problem demanding prompt solution.

The content of the invention

In order to solve the above problems, it is an object of the invention to provide a kind of valve, including valve body and valve element, set in valve body There is the first flow and second flow channel for communicating, the cross-sectional area of first flow is more than the cross-sectional area of second flow channel, and valve element includes Head and the valve rod in first flow, wherein, it is provided with the junction of first flow and second flow channel removable with valve body The plug-in unit of connection is unloaded, plug-in unit is provided with the through hole flow through for fluid, and the cross-sectional area of through hole is less than the cross-sectional area of second flow channel, valve When core moves back and forth along its longitudinal direction, it is capable of achieving by the opening and closing of head and through hole logical between first flow and second flow channel It is disconnected.

Preferably, plug-in unit includes the body portion being arranged in the shoulder in first flow and insertion second flow channel.

Further, plug-in unit by the interference fit of its outer surface and first flow and/or the flow path wall of second flow channel with Valve body is detachably connected.

Preferably, the fit tolerance of interference fit is H7/s6.

Further, plug-in unit includes endothecium structure and layer structure, and endothecium structure includes what plug-in unit and head were coordinated Region, layer structure includes that plug-in unit carries out the outer surface of interference fit, outer layer with the flow path wall of first flow and/or second flow channel The material hardness of structure less than valve body material hardness, the material hardness and head of the material hardness of endothecium structure between valve body Between material hardness.

Preferably, plug-in unit is located at the end face in second flow channel for plane or from periphery to the convex surface of intermediate projections.

Further, the junction of first flow and second flow channel is right angle step structure, the outer surface and right angle of plug-in unit It is interference fit between the step facade of ledge structure；Or the junction of first flow and second flow channel is inverted cone surface, plug-in unit Outer surface and inverted cone surface between be interference fit.

Preferably, through hole and the aperture that head is coordinated are rectangular edge or inverted cone surface.

Further, head has the conical surface coordinated with through hole, when the aperture that through hole and valve element are coordinated is to fall During the conical surface, the inverted cone surface of through hole has identical taper with the conical surface of head.

The present invention arranges dismountable plug-in unit in the junction of first flow and second flow channel, and the fitting area of valve body is carried out It is effectively protected, when plug-in unit is damaged under fluid media (medium) and wherein the erosion effect of impurity, only plug-in unit need to be carried out more Change, significantly reduce the maintenance cost of transmission fluid.When plug-in unit needs dismounting, only need to be using ejection tool by inserting Part is located at the end face in second flow channel and ejects plug-in unit, dismounts very convenient.In addition, work as the presence of various types in transmission system Number valve when, can arrange in pairs or groups to realize by the valve body of the plug-in unit of different model and same model, valve element.So, producer Need the valve element and valve body of a kind of specification of stock, it is possible to obtain the valve with different transmission performances, greatly enhance valve body With the interchangeability of valve element, the demand to standby redundancy is reduced, so as to reduce production cost.

It is that the above of the present invention can be become apparent, preferred embodiment cited below particularly simultaneously combines accompanying drawing specifically It is bright.

Description of the drawings

Fig. 1 is the structure chart of existing valve；

Fig. 2-1 is the structure chart of the valve of first embodiment of the invention；

Fig. 2-2 is the structure chart of the alternative valve of first embodiment of the invention；

Fig. 2-3 is the enlarged drawing of the plug-in unit in Fig. 2-1；

Fig. 3-1 is the structure chart of the valve of second embodiment of the invention；

Fig. 3-2 is the structure chart of the alternative valve of second embodiment of the invention.

Component label instructions

100 valves

1 valve body

11 step facades

21 heads

22 valve rods

3 plug-in units

31 through holes

32 shoulders

33 body portions

4 first flows

5 second flow channels

Specific embodiment

Hereinafter embodiments of the present invention are illustrated by particular specific embodiment, those skilled in the art can be by this specification Disclosed content understands easily other advantages and effect of the present invention.Although description of the invention will be with reference to preferred embodiment Introduce together, but this feature for not representing this invention is only limitted to the embodiment.On the contrary, inventing with reference to embodiment The purpose of introduction is to cover other selections or transformation for being possible to extend based on claim of the invention.In order to carry Understand for the depth to the present invention, will be comprising many concrete details in below describing.The present invention can not also use these thin Section is implemented.Additionally, in order to avoid emphasis that is chaotic or obscuring the present invention, some details will be omitted in the de-scription.

In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can Being to be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this Concrete meaning in invention.

In addition, used in the following description " on ", D score, "left", "right", " top ", " bottom ", it is right to should not be construed as The restriction of the present invention.

【First embodiment】

As shown in accompanying drawing 2-1 and accompanying drawing 2-2, the first embodiment of the present invention provides a kind of valve 100, including valve body 1 And valve element, the first flow 4 and second flow channel 5 for communicating is provided with valve body 1, the cross-sectional area of first flow 4 is more than second flow channel 5 Cross-sectional area, valve element includes head 21 and the valve rod 22 in first flow 4, in first flow 4 and the knot of second flow channel 5 The plug-in unit 3 being detachably connected with valve body 1 is provided with conjunction, plug-in unit 3 is provided with the through hole 31 flow through for fluid, the cross section of through hole 31 Product is less than the cross-sectional area of second flow channel 5, when valve element moves back and forth along its longitudinal direction, by the opening and closing of head 21 and through hole 31 Break-make between achievable first flow 4 and second flow channel 5.In the present embodiment, valve 100 can be accompanying drawing 2-1 and accompanying drawing 2-2 institutes The cone valve for showing, or other kinds of valve, such as ball valve, guiding valve etc..

In the course of work of valve, the junction of the fitting area of valve body, i.e. first flow 4 and second flow channel 5, due to length Phase is subject to fluid media (medium) and the wherein erosion of impurity, is easily damaged, and now needs to change whole valve body, to meet The needs of transmission fluid.First embodiment of the invention arranges dismountable in the junction of first flow 4 and second flow channel 5 Plug-in unit 3, is effectively protected to the fitting area of valve body 1, extends the service life of valve body 1.Because plug-in unit 3 is detachable , when plug-in unit 3 is damaged under fluid media (medium) and wherein the erosion effect of impurity, only plug-in unit 3 need to be changed, and not It is to change whole valve body 1, significantly reduces the maintenance cost of transmission fluid.The cross-sectional area of the through hole 31 of plug-in unit 3 is little In the cross-sectional area of second flow channel 5, thus can ensure the end face for having in second flow channel 5 on plug-in unit 3, when plug-in unit 3 needs to tear open When unloading, only using ejection tool plug-in unit 3 need to be ejected by the end face that plug-in unit 3 is located in second flow channel 5, be dismounted very square Just.

In addition, the present invention to the shape of plug-in unit 3 without other special requirements, any one can be designed into and be easy to The shape of processing.Preferably, plug-in unit 3 includes the body portion being arranged in the shoulder 32 in first flow 4 and insertion second flow channel 5 33, as illustrated in figs. 2-3.The plug-in unit 3 provided in the present embodiment only needs to be completed by simple a few road turning operations, this So that the size adjusting of plug-in unit 3 is very convenient.When there is the valve of Multiple Type in transmission system, different model can be passed through Plug-in unit 3 and same model the collocation of valve body 1, valve element realizing.So, for the producer using transmission fluid, only need The valve element and valve body of a kind of specification of stock, it is possible to obtain the valve with different transmission performances, greatly enhance valve body with The interchangeability of valve element, reduces the demand to standby redundancy, so as to reduce production cost.

Further, the outer surface of plug-in unit 3 and the flow path wall of first flow 4 and/or second flow channel 5 are interference fit, with It is tightly connected between the flow path wall for making plug-in unit 3 and first flow 4 and/or second flow channel 5, prevents presence between plug-in unit 3 and valve body 1 Fluid seepage, it is ensured that the reliability of the service behaviour of valve 100.

Preferably, the fit tolerance of interference fit is H7/s6, and this fit tolerance is for while meet sealing and easy assembling Preferred fit tolerance.

Further, plug-in unit 3 includes endothecium structure and layer structure, and endothecium structure at least enters including plug-in unit 3 with head 21 Row coordinate region, its material hardness between the material hardness of valve body 1 and the material hardness of head 21, to prevent plug-in unit 3 The too fast damage under fluid media (medium) and the wherein erosion of impurity, so as to reduce the replacement frequency of plug-in unit 3.Preferably, plug-in unit 3 is interior Rotating fields are using the metal material for meeting above-mentioned hardness requirement.The layer structure of plug-in unit 3 at least includes plug-in unit 3 and first flow 4 And/or the flow path wall of second flow channel 5 carries out the outer surface of interference fit, material hardness of its material hardness less than valve body 1.This is Because in the disassembly process of plug-in unit 3, the outer surface and flow path wall of plug-in unit 3 all inevitably result from abrasion, it is well known that When the surface of two different hardness comes in contact, the little surface of hardness is more prone to abrasion.The layer structure of plug-in unit 3 is using hard Material of the degree less than valve body so that the abrasion in the disassembly process of plug-in unit 3 occurs mainly in the outer surface of plug-in unit 3, to avoid to valve The abrasion of body 1.In addition, the layer structure of plug-in unit 3 can also cause disassembly process to be more prone to using the less material of hardness.It is preferred that Ground, the layer structure of plug-in unit 3 is less than the metal material of valve body 1 using hardness.

Further, it is plane that plug-in unit 3 is located at the end face in second flow channel 5, and the acting surface of liftout attachment is designed as putting down Face so that when plug-in unit 3 is split out, is conducive to human users.

Preferably, when the junction of first flow 4 and second flow channel 5 is right angle step structure, the outer surface of plug-in unit 3 with It is interference fit between the step facade 11 of the right angle step structure；First flow 4 is inverted cone surface with the junction of second flow channel 5 When, it is interference fit between the outer surface of plug-in unit 3 and the inverted cone surface.The fitting area of valve body common at present generally has right angle step Two kinds of structures of type and conical-surface type, as shown in accompanying drawing 2-1 and accompanying drawing 2-2, shape and the fitting area of the outer surface of plug-in unit 3 match, Improve the sealing between plug-in unit 3 and flow path wall.

Further, through hole 31 and the aperture that head 21 is coordinated are rectangular edge, so that the letter of the structure of plug-in unit 3 It is single, it is easy to manufacture.

Preferably, the cross section of first flow 4, second flow channel 5 and through hole 31 is circle.

【Second embodiment】

As shown in accompanying drawing 3-1 and accompanying drawing 3-2, the second embodiment of the present invention provides a kind of valve 100, including valve body 1 And valve element, the first flow 4 and second flow channel 5 for communicating is provided with valve body 1, the cross-sectional area of first flow 4 is more than second flow channel 5 Cross-sectional area, valve element includes head 21 and the valve rod 22 in first flow 4, in first flow 4 and the knot of second flow channel 5 The plug-in unit 3 being detachably connected with valve body 1 is provided with conjunction, plug-in unit 3 is provided with the through hole 31 flow through for fluid, the cross section of through hole 31 Product is less than the cross-sectional area of second flow channel 5, when valve element moves back and forth along its longitudinal direction, by the opening and closing of head 21 and through hole 31 Break-make between achievable first flow 4 and second flow channel 5.In the present embodiment, valve 100 can be accompanying drawing 3-1 and accompanying drawing 3-2 institutes The cone valve for showing, or other kinds of valve, such as ball valve, guiding valve etc..

The present embodiment and first embodiment are differred primarily in that：It is convex surface that plug-in unit 3 is located at the end face in second flow channel 5； Through hole 31 is inverted cone surface with the aperture that head 21 is coordinated.

In the present embodiment, the end face that plug-in unit 3 is located in second flow channel 5 is the convex surface from periphery to intermediate projections, is being split out During plug-in unit 3, the convex surface is the acting surface of liftout attachment.This acting surface is designed as into the shape from periphery to intermediate projections, so When liftout attachment acts on the face, the component that center is pointed to by periphery can be produced so that plug-in unit 3 inserts second flow channel 5 In part produce a deformation towards central axis, so as to be easier plug-in unit 3 to be split out in the valve body 1.Preferably, should Convex surface is the conical surface, is more convenient processing.

Further, through hole 31 and the conical surface that the aperture that head 21 is coordinated is inverted cone surface, the inverted cone surface and head 21 With identical taper.When aperture adopts inverted cone surface so that the section transitions of first flow 4 to second flow channel 5 increase than shallower The big erosion surface of fitting area, can extend the service life of plug-in unit 3.When valve 100 is cone valve, the conical surface and through hole of valve element 31 inverted cone surface has identical taper so that valve 100 has more structurally sound break-make performance.

In sum, the principle and its effect of above-described embodiment that the present invention is provided only illustrative present invention, rather than For limiting the present invention.Any person skilled in the art all can be under the spirit and the scope without prejudice to the present invention, to above-mentioned reality Applying example carries out modifications and changes.Therefore, such as those of ordinary skill in the art without departing from disclosed Spirit and technological thought under all equivalent modifications for being completed or change, should be covered by the claim of the present invention.

Claims

1. a kind of valve, including valve body and valve element, are provided with the first flow and second flow channel for communicating in the valve body, and described first , more than the cross-sectional area of the second flow channel, the valve element is including head and in the first flow for the cross-sectional area of runner Valve rod, it is characterised in that be provided with the junction of the first flow and the second flow channel detachable with the valve body The plug-in unit of connection, the plug-in unit is provided with the through hole flow through for fluid, and the cross-sectional area of the through hole is less than the second flow channel Cross-sectional area, when the valve element moves back and forth along its longitudinal direction, institute is capable of achieving by the head with the opening and closing of the through hole State the break-make between first flow and the second flow channel.

2. valve according to claim 1, it is characterised in that the plug-in unit includes the shoulder being arranged in the first flow Body portion in portion and the insertion second flow channel.

3. valve according to claim 1 and 2, it is characterised in that the plug-in unit is first-class with described by its outer surface The interference fit of the flow path wall of road and/or the second flow channel carries out described being detachably connected with the valve body.

4. valve according to claim 3, it is characterised in that the fit tolerance of the interference fit is H7/s6.

5. valve according to claim 3, it is characterised in that the plug-in unit includes endothecium structure and layer structure, described Endothecium structure includes the region that coordinated with the head of the plug-in unit, and the layer structure includes the plug-in unit with described the The flow path wall of one runner and/or the second flow channel carries out the outer surface of the interference fit, and the material of the layer structure is hard Degree less than the valve body material hardness, the material hardness and the head of the material hardness of the endothecium structure between the valve body Between the material hardness in portion.

6. valve according to claim 1, it is characterised in that the end face that the plug-in unit is located in the second flow channel is flat Face or from periphery to the convex surface of intermediate projections.

7. valve according to claim 1, it is characterised in that the first flow is with the junction of the second flow channel Right angle step structure, the outer surface of the plug-in unit is interference fit with the step facade of the right angle step structure.

8. valve according to claim 1, it is characterised in that the first flow is with the junction of the second flow channel Inverted cone surface, is interference fit between the outer surface of the plug-in unit and the inverted cone surface.

9. valve according to claim 1, it is characterised in that the through hole is straight with the aperture that the head is coordinated Angle seamed edge or inverted cone surface.

10. valve according to claim 9, it is characterised in that the head has the cone coordinated with the through hole Face, when the aperture that the through hole and the valve element are coordinated is inverted cone surface, the inverted cone surface and the head of the through hole The conical surface in portion has identical taper.

11. valves according to claim 1, it is characterised in that the first flow, the second flow channel and described logical The cross section in hole is circle.