CN104114924A - Valve - Google Patents

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 flow.

Background technique

Become known for controlling the valve of gas flow.They are for example arranged on the air oil extraction parts the inside of vacuum pump.

These valves are because vibration and noise are tended in part error and the acting in conjunction of the air-flow of part pulsation.This may cause different problems, for example, cause the wearing and tearing that increase or cause large noise.For fear of vibration and noise, there is different annexes, they take error compensation or damping is basis.

Summary of the invention

The object of the invention is, an improved valve is provided, it reduces vibration and noise, for this reason without additional part.

In order to achieve this end, advise that one for controlling fluid stream, the valve of gas flow especially.This valve has a valve seat, valve closing parts, a guide element and a damped part.Described valve closing parts in closed position with respect to valve base sealing.The open position of described shut-off block it and valve base chamber every and allow the through-flow valve of fluid.Described valve closing parts can be handled in the axial direction between closed position and open position.Described guide element guiding shut-off block moves between closed position and open position.Described damped part makes valve closing parts radially push up and compressing adjacent parts and form integratedly with guide element.

Described damped part and guide element form integratedly, make thus described damped part needn't make separately and then assembling.Therefore not only simplify the processing of valve but also simplify its assembling." one " refers to, and described guide element and damped part are by commaterial and form.Therefore between guide element and damped part, there is not the interface on material technology.Due to described damped part top pressure valve shut-off block on the one hand, described valve closing parts are radially leaning this fact of next-door neighbour's parts on the other hand, obtain frictional force or in other words, produce sliding contact.The motion of this frictional force or sliding contact damping valve shut-off block, result is, reduces or suppresses noise noted earlier or vibration completely.Described axial and radially setting mutual vertically.

According to an embodiment, described guide element has a set of, and it has a columniform inner circumference, and the central axis of described damped part from inner circumference towards cover extends.Said valve closing parts are inner at guide element and guide along central axis at least partly.

Described damped part forms integratedly with cover.Wherein for example also comprise this situation, described damped part forms with the form that is down flat of the cylindrical inner circumference of guide element.

According to another embodiment, described damped part consists of a tongue piece.This tongue piece can be connected integratedly with cover on its one end.At its other end, i.e. top pressure valve shut-off block on free end.This tongue piece can be processed easily.

Described damped part flexibly forms.Described tongue piece especially can form on simple elasticity ground.

Described guide element and described damped part for example can be made by moulding.

According to an embodiment, described guide element and described damped part are by the moulding of one, be especially made of plastics.Obtain thus simple processing technology.

According to another embodiment, described valve closing parts have a valve cone and a valve rod, wherein said damped part top pressure valve bar.Because the described valve rod of effect of damped part is tumbled by the main through-flow direction of valve with respect to fluid stream.This tumbling may cause, and described valve rod leans in a plurality of positions the putting of guide element, and wherein produces corresponding friction.Add or alternatively also can make by tumbling valve cone top press the cover that surrounds valve cone, in this position, produce thus friction accordingly and produce thus corresponding damping.

According to an embodiment, described valve rod is at guide element, especially in the cover the inside guiding of guide element.Can make thus the guiding simply generally of described valve rod or described valve closing parts.

Described guide element can form next-door neighbour's parts.Also can make alternatively or additionally described next-door neighbour's parts also to surround the form of the cover of valve cone, form.

In addition the vacuum pump that air oil extraction parts and have air oil extraction parts is equipped with according to valve of the present invention.This vacuum pump for example uses in automotive field.

Other possible execution of the present invention also comprise do not itemize, by the combination of embodiment's feature of valve above-mentioned or that describe with embodiment below or vacuum pump.Also can be using All aspects of as improving or supplementing interpolation or change over various citation form of the present invention this professional workforce.

Accompanying drawing explanation

Other expansion structure of the present invention is the content of dependent claims and the embodiment of the present invention that the following describes.In addition by means of embodiment, be elucidated in more detail with reference to the drawing the present invention.

In accompanying drawing:

Fig. 1 shows out vacuum pump, have that solid is analysed and observe and exploded representation according to an embodiment valve;

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

Fig. 3 illustrates the sectional drawing III-III of Fig. 2.

Identical reference character represents parts identical or that function is identical in the accompanying drawings, unless there is special regulation.

Embodiment

Fig. 1 shows out vacuum pump 1.This vacuum pump 1 can be for example the constituent element of automobile.

It is that solid is analysed and observe and with the valve 2 shown in exploded view that vacuum pump 1 comprises.Valve 2 is designed to for this reason, controls fluid stream, gas flow especially.This controls function can comprise that the fluid ending completely by valve 2 flows, or also comprises the flow that reduces or strengthen the fluid stream that passes through valve 2.

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

Valve 2 also comprises valve closing parts 8, and it is comprised of valve cone 5 and valve rod 6.Valve cone 5 forms on one end of valve rod 6.At the closed position valve cone 5 of valve closing parts 8, with respect to valve seat 3 sealings and prevent that thus the perforate 7 that fluid passes through to be limited by valve seat 3 from flowing, or reduce flow until minimum value.Open position valve cone 5 at valve closing parts 8 also allows fluid stream by perforate 7 and thus by valve 2 with valve seat 3 intervals thus.Valve cone 5 can be handled on axial 9 between closed position and open position.Axial 9 is contrary with the main through-flow direction by perforate 7.But also can be consistent with this main through-flow direction.

Valve 2 also has guide element 11.Guide element 11 is comprised of the first and second covers 12,13, and they utilize radially galianconism 14 to interconnect.Galianconism 14 is formed for cover 12,13 perforate 15 that makes fluid be input to perforate 7 or discharge from perforate 7 together.

Cover 12 has edge 16 on its one end, and it is as the bearing of helical spring 17 one end.Helical spring 17 at its other end upper support on valve cone 5.Helical spring 17 makes valve cone 5 be tightened in advance closed position.Valve rod 6 extends through cover 13 through helical spring 7 and on its free end 21.

The damped part of tongue piece 22 forms that are shaped integratedly on cover 13.This point can be found out by Fig. 2 and 3, and they illustrate the side view of Fig. 1 and the sectional drawing III-III of Fig. 2.Tongue piece 22 is at 30 top pressure valve bars 6 radially.Make thus valve rod 6 substantially contact with cover 13 with the opposed position location 24 of tongue piece 22.Rubbing contact in this generation is responsible for desired damping, at least reducing vibration or noise.

Tongue piece 22 extends to its central axis 23 from overlapping 13 inner circumference 25.According to described embodiment, overlapping 13 consists of columniform inner circumference and excircle 25,26.Tongue piece 22 is connected integratedly with cover 13 on its one end 28.Free end 29 leans on valve rod 6.Tongue piece 22 is made by elastomeric plastics.According to this embodiment's tongue piece 22, produce thus, in cover 13 the insides, be provided with and be parallel to central axis 23 towards the otch 27 of tongue piece 22 both sides.Tongue piece 22 as unique moulding by overlapping 13, galianconism 14 and cover 12 make.

The radial pressure being applied by tongue piece 22 causes valve rod 6 to be tumbled with respect to axial 9, sees Fig. 1.Other (or alternative) position location 32 and/or the 33(that can obtain thus valve rod 6 or valve cone 5 are shown in Fig. 1).In position location, 32 valve rods 6 can lean another section of cover 13.In addition tumbling of valve rod 6 can cause, valve cone 5 on its edge 34, for example open position, with respect to cover 12 on position location 33 contact.

Claims (10)

1. one kind is flowed for controlling fluid, especially the valve of gas flow (2), there is a valve seat (3), one valve closing parts (8), it can be in axially (9) upper manipulation between closed position and open position, at shut-off block described in closed position, with respect to valve seat (3), seal, at shut-off block described in open position and valve seat (3) interval and the permission through-flow valve of fluid (2), also there is a guide element (11), its guiding valve shut-off block (8) motion between closed position and open position, also there is a damped part (22), it makes valve closing parts (8) compress adjacent parts (13) and form integratedly with guide element (11) on radially (30) top.

2. valve as claimed in claim 1, wherein said guide element (11) has a set of (13), and it especially has a columniform inner circumference (25), and the central axis (23) of described damped part (22) from inner circumference towards cover (13) extends.

3. valve as claimed in claim 2, wherein said damped part (22) forms integratedly with cover (13).

4. valve as claimed any one in claims 1 to 3, wherein said damped part (22) consists of a tongue piece.

5. valve as claimed in claim 4, wherein said tongue piece (22) is connected and top pressure valve shut-off block (8) on its other end (29) with cover (13) integratedly its one end (28) are upper.

6. the valve as described in any one in claim 1 to 5, wherein said damped part (22) flexibly forms.

7. the valve as described in any one in claim 1 to 6, wherein said guide element (11) and described damped part (22) are by the moulding of one, especially made by different plastics in two component injection molding process by plastics or by the moulding of one.

8. the valve as described in any one in claim 1 to 7, wherein said valve closing parts (8) have a valve cone (5) and a valve rod (6), wherein said damped part (22) top pressure valve bar (6).

9. valve as claimed in claim 8, wherein said valve rod (6) is at guide element (11), the parts (13) that especially form next-door neighbour at the guiding of cover (13) the inside and/or the described guide element (11) of guide element.

10. air oil extraction parts have valve (2) as claimed in any one of claims 1-9 wherein, especially in a vacuum pump (1) the inside.