CN104114924B

CN104114924B - Valve

Info

Publication number: CN104114924B
Application number: CN201380010646.1A
Authority: CN
Inventors: D.齐尼克; K.德沃拉切克
Original assignee: Mann and Hummel GmbH
Current assignee: Mann and Hummel GmbH
Priority date: 2012-02-24
Filing date: 2013-02-01
Publication date: 2017-05-03
Anticipated expiration: 2033-02-01
Also published as: DE112013001140A5; DE102012003507A1; WO2013124137A1; CN104114924A

Abstract

A valve (2) for controlling a fluid flow, in particular a gas flow, comprises a valve seat (3), a valve closing element (8) that can be actuated in the axial direction (9) between a closed position in which the same sealingly rests against the valve seat (3), and an open position in which the same is at a distance from the valve seat (3) and allows a fluid to flow through the valve (2), a guiding element (11) that guides a movement of the valve closing element (8) between the closed position and the open position, and a damping element (22) that presses the valve closing element (8) against an adjoining element (13) in the radial direction (30) and is formed as a single piece along with the guiding element (11).

Description

Valve

Technical field

The present invention relates to a kind of valve, for controlling fluid stream, especially gas stream.

Background technology

Become known for controlling the valve of gas stream.They are for example installed in the air oil extraction inside components of vacuum pump.

Collective effect of these valves due to part error with the air-flow of part pulsation tends to vibration and noise.This may Cause different problems, for example, cause increased abrasion or cause big noise.In order to avoid vibration and noise, there is difference Adnexa, they are based on error compensation or damping.

The content of the invention

It is an object of the present invention to provide an improved valve, it reduces vibration and noise, is this without the need for additional zero Part.

In order to realize this purpose, it is proposed that a valve for being used to control fluid stream, especially gas stream.The valve has one Valve seat, a valve closing part, a guiding parts and a damped part.The valve closing part closed position relative to Valve base sealing.The shut-off block open position it with valve base chamber every and allow the through-flow valve of fluid.The valve is closed Closing part part can be manipulated between closed position and open position in the axial direction.The guiding parts guiding shut-off block is being closed Move between position and open position.The damped part make valve closing part radial direction top pressure close to part and with lead It is integrally formed to part.

The damped part is integrally formed with guiding parts, the damped part be separately made and is connect Dressing is matched somebody with somebody.Therefore not only simplify the processing of valve but also simplify its assembling." one " refers to the guiding parts and damper portion Part is by commaterial and is integrally formed.Therefore there is no the side on material technology between guiding parts and damped part Interface.Due to the damped part one side top pressure valve closing part, on the other hand the valve closing part is on radial direction top Be close to neighbour part the fact that, obtain frictional force or in other words, produce sliding contact.This frictional force or slip The motion of contact damping valve closing part, as a result, reducing or completely inhibiting noise noted earlier or vibration.Institute State and axially arranged with radial direction mutual vertically.

According to an embodiment, the guiding parts has a set of, its inner periphery with a cylinder, the damped part Extend from inner periphery towards the central axis of set.Said valve closing part is at least partially inside guiding parts and edge Central axis guiding.

The damped part is integrally formed with set.Wherein for example also include such case, the damped part is being oriented to The form that is down flat of the cylindrical inner periphery of part is constituted.

According to another embodiment, the damped part is made up of a tongue piece.The tongue piece can on one end with set integrally Ground connection.Its other end, i.e. on free end top pressure valve closing part.This tongue piece easily can be processed.

The damped part is flexibly constituted.The tongue piece is constituted with enabling in particular to simple elasticity.

The guiding parts and the damped part for example can be made up of moulding.

According to an embodiment, the guiding parts and the damped part by one moulding, be especially made of plastics. Thus obtain simple processing technique.

According to another embodiment, the valve closing part has a valve cone and a valve rod, wherein the damped part top Pressure valve bar.As the effect valve rod of damped part is tumbled by the main through-flow direction of valve relative to fluid stream.It is this to incline Turning over to cause, and the valve rod is on the set that multiple positions act against guiding parts, wherein producing corresponding friction.It is additional or standby Selection of land can also pass through the set for making valve cone top pressure surround valve cone of tumbling, and thus produce corresponding friction in this position and thus produce Raw corresponding damping.

According to an embodiment, the valve rod is guided in guiding parts, especially inside the set of guiding parts.Thus enable that The valve rod or the valve closing part are generally simply guided.

The guiding parts may be constructed close to part.Close to part also with bag described in can also alternatively or additionally making The form for enclosing the set of valve cone is constituted.

In addition an air oil extraction part and a vacuum pump with air oil extraction part are equipped with the valve according to the present invention. This vacuum pump is for example used in automotive field.

Other possible execution of the present invention also include it is not itemizing, by valve that is above-mentioned or being described with embodiment below The combination of the embodiment feature of door or vacuum pump.Here professional can also using various aspects as improve or supplement addition or Change over the various primitive forms of the present invention.

Description of the drawings

Other expansion structures of the present invention are the contents of dependent claims and invention described below embodiment.This The present invention is elucidated in more detail with reference to the drawing by means of embodiment outward.

In accompanying drawing：

Fig. 1 shows out vacuum pump, the valve according to an embodiment of with perspective cross-sectional and exploded representation；

Fig. 2 illustrates the side view of Fig. 1；

Fig. 3 illustrates the profile III-III of Fig. 2.

Identical reference represents identical or function identical part in the accompanying drawings, unless there are special regulation.

Specific embodiment

Fig. 1 shows out vacuum pump 1.The vacuum pump 1 can for example be the ingredient of automobile.

Vacuum pump 1 include perspective cross-sectional and with the valve 2 shown in exploded view.Valve 2 is designed to for this, controls fluid Stream, especially gas stream.This control function can include the completely switched off fluid stream by valve 2, or also include reduce or Increase the flow of the fluid stream by valve 2.

Valve 2 has valve seat 3, and it is constituted on the lid 4 of valve 2.

Valve 2 also includes valve closing part 8, and it is made up of valve cone 5 and valve rod 6.The structure on one end of valve rod 6 of valve cone 5 Into.Close relative to valve seat 3 and fluid is thus prevented by being limited by valve seat 3 in the closed position valve cone 5 of valve closing part 8 Perforate 7 flow, or reduce flow until minima.It is spaced with valve seat 3 in the open position valve cone 5 of valve closing part 8 And thus allow fluid stream to pass through perforate 7 and from there through valve 2.Valve cone 5 can be in closed position and open position on axially 9 Manipulate between putting.Axially 9 is contrary with by the main through-flow direction of perforate 7.But can also be consistent with this main through-flow direction.

Valve 2 also has guiding parts 11.By first and second set 12,13 constitute guiding parts 11, and they are using radially Galianconism 14 is connected with each other.Galianconism 14 is formed for making fluid be input to perforate 7 or from the discharge of perforate 7 together with set 12,13 Perforate 15.

Set 12 has edge 16, its bearing as 17 one end of helical spring on one end.Helical spring 17 is propped up on the other end thereof Hold on valve cone 5.Helical spring 17 makes valve cone 5 be tightened to closed position in advance.Valve rod 6 passes through helical spring 7 and passes through on its free end 21 Set 13 extends.

The damped part of 22 form of tongue piece formed integrally on set 13.This point is by Fig. 2 and 3 as can be seen that they show Go out the profile III-III of the side view and Fig. 2 of Fig. 1.Tongue piece 22 is in radially 30 top pressure valve rods 6.Thus make valve rod 6 substantially with The opposed position location 24 of tongue piece 22 is contacted with set 13.The CONTACT WITH FRICTION that here is produced is responsible for desired damping, at least Reduce vibration or noise.

Tongue piece 22 extends to its center axis 23 from the inner periphery 25 of set 13.According to embodiment set 13 by cylinder Inner periphery and excircle 25,26 constitute.Tongue piece 22 is integrally connected with set 13 in its one end 28.Free end 29 acts against valve On bar 6.Tongue piece 22 is made up of elastoplast.Thus produce according to the embodiment tongue piece 22, be provided with parallel in inside set 13 Otch 27 of the heart axis 23 towards 22 both sides of tongue piece.Tongue piece 22 is made by set 13, galianconism 14 and set 12 as unique moulding Into.

The radial pressure applied by tongue piece 22 causes valve rod 6 relative to axially 9 tumbling, and sees Fig. 1.It is hereby achieved that valve rod 6 or valve cone 5 other（Or it is alternative）Position location 32 and/or 33（See Fig. 1）.In position location, 32 valve rod 6 can be leaned Another section of set 13.In addition tumbling for valve rod 6 can cause, valve cone 5 on its edge 34, for example open position, relative to Set 12 is contacted on position location 33.

Claims

1. a kind of valve for controlling fluid stream（2）, with a valve seat（3）, a valve closing part（8）, it can close In axial direction between closed position and open position（9）Upper-pilot, in shut-off block described in closed position relative to valve seat（3）Sealing, In shut-off block described in open position and valve seat（3）It is spaced and allows the through-flow valve of fluid（2）, also with a guiding parts （11）, it guides valve shut-off block（8）Motion between closed position and open position, also with a damped part （22）, it makes valve closing part（8）Radially（30）Top pressure close to part and and guiding parts（11）It is integrally formed, Characterized in that, the valve closing part（8）With a valve cone（5）With a valve rod（6）, wherein the damped part（22）Top Pressure valve bar（6）So that the valve rod is tumbled by the main through-flow direction of valve relative to fluid stream.

2. valve as claimed in claim 1, wherein the guiding parts（11）With a set of（13）, the damped part（22） From the set towards the set（13）Central axis（23）Extend.

3. valve as claimed in claim 2, wherein the damped part（22）With set（13）It is integrally formed.

4. valve as claimed any one in claims 1 to 3, wherein the damped part（22）It is made up of a tongue piece.

5. valve as claimed in claim 4, wherein the tongue piece（22）In its one end（28）Upper and set（13）It is integrally connected And in its other end（29）Upper top pressure valve closing part（8）.

6. valve as claimed any one in claims 1 to 3, wherein the damped part（22）Flexibly constitute.

7. valve as claimed any one in claims 1 to 3, wherein the guiding parts（11）With the damped part（22） Moulding by one or the moulding by one are made up of different plastics in double-component injection molding process.

8. valve as claimed in claim 7, wherein the valve rod（6）In guiding parts（11）The inside guiding and/or described lead To part（11）Constitute close to part.

9. valve as claimed in claim 8, wherein the valve rod（6）In the set of guiding parts（13）The inside guiding.

10. a kind of air oil extraction part, with valve as claimed in any one of claims 1-9 wherein（2）.

11. vacuum pumps, including air oil extraction part as claimed in claim 10.