CN205370699U - Fluid control valve - Google Patents
Fluid control valve Download PDFInfo
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- CN205370699U CN205370699U CN201620045303.XU CN201620045303U CN205370699U CN 205370699 U CN205370699 U CN 205370699U CN 201620045303 U CN201620045303 U CN 201620045303U CN 205370699 U CN205370699 U CN 205370699U
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- control valve
- valve body
- oral area
- fluids
- main part
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Abstract
The utility model provides a fluid control valve restraines when the case removes valve fully open position, because of the first sound of collision that keeps component and valve body main part or bearing parts collision emergence. Fluid control valve includes valve body (12) and fluid control valve portion (14), and this valve body has: entry end oral area (16), valve body main part (20) of route are connected to exit end oral area (18) and formation fluidic, this fluid control valve portion has: one end is connected with case (22), a pair of component (32 that keeps of the other end and diaphragm (30) and this diaphragm of centre gripping, 34 )Central part movable pole (24) connected, bearing parts (26) with the installation of movable pole axially movable's mode, with fall into two compartment (36a by the diaphragm, 36b), pressure working space (28), first keep component (32), at the surface parts (32a) who collides with valve body main part or bearing parts when the case removes to valve fully open position, the convex portion (44) that constitutes by "Cushion" has.
Description
Technical field
This utility model relates to diaphragm type control valve for fluids, and it is such as used in the aerofluxus of internal combustion engine in order to purify petrol engine etc. and to the secondary air lead-in device of feeding secondary air in exhaust pathway.
Background technology
In order to tackle the exhaust gas purification of the electromotor of the internal combustion engine of the vehicle such as motorcycle etc., particularly petrol engine etc., it is known that feeding secondary air in exhaust pathway so that aerofluxus comprises unburnt ingredient burning secondary air lead-in device.Secondary air lead-in device has the pressure of the auxiliary air for controlling to be supplied in aerofluxus or the control valve for fluids of capacity, such as can enumerate diaphragm type control valve for fluids as control valve for fluids.
Diaphragm type control valve for fluids 100, as it is shown in figure 5, have valve body 120 and control valve for fluids portion 140, this valve body 120 has the valve body main part 200 at the fluid connection channels F being internally formed from arrival end oral area 160 to port of export oral area 180.Control valve for fluids portion 140 is mainly constituted by with lower part: the spool 220 being arranged in connecting path F；Movable rod 240, its one end is connected with spool 220, and its other end is connected with the central part of barrier film 300 and a pair retaining member 320,340 clamping this barrier film 300；Parts of bearings 260, it is fixed on the inside of valve body main part 200, is mounted so as to movable rod 240 and is axially movable；With pressure duty space 280.
Pressure duty space 280 is separated into two compartments by barrier film 300, namely, via the first compartment 360b that connecting pipe 400 connects with gas handling system pipe arrangement (not shown), with the second compartment 360a connected with described connecting path F via through hole (not shown), and be configured to: by making the internal pressure (negative pressure) of gas handling system pipe arrangement import the first compartment 360b by connecting pipe 400, pressure differential is produced between the first compartment 360b and the second compartment 360a, utilize this pressure differential, generation makes the driving force that barrier film 300 deforms to axial top (direction close to connecting pipe 400).On the other hand, between spool 220 and valve body main part 200, it is configured with and always barrier film 300 is applied the spring 380 of elastic force to (direction away from connecting pipe 400) axially below.
Such diaphragm type control valve for fluids 100 is configured to: utilize (counteracting) relation at mutually different active force axially of described driving force and described spring force, make barrier film 300 deform in the axial direction, and the movable rod 240 integrated with this barrier film 300 and spool 220 move in the axial direction.Namely, when the internal pressure utilizing gas handling system pipe arrangement imports high negative pressure to the first compartment 360b, pressure differential is produced between the first compartment 360b and the second compartment 360a, if based on the driving force of this pressure differential more than the spring force based on spring 380, then barrier film 300 deforms to axially top, additionally, less negative pressure is being imported to the first compartment 360b, or when not importing negative pressure, owing to the spring force based on spring 380 is more than the driving force based on the pressure differential between the first compartment 360b and the second compartment 360a, then barrier film 300 is to deforming axially below, deformation along with such barrier film 300, movable rod 240 and spool 220 is made to move in the axial direction.
So, when high negative pressure is imported into the first compartment 360b, along with the barrier film 300 deformation to axially top, spool 220 moves to the valve blocking position of crimping valve seat 390 to axially top, thus, the stream (position with reference to the spool 22 shown in Fig. 2) of auxiliary air E can be blocked, additionally, when the negative pressure in the first compartment 360b diminishes, as shown in Figure 5, along with barrier film 300 under the effect of the spring force of spring 380 to deformation axially below, spool 220 moves away valve seat 390, first retaining member 320 of clamping barrier film 300 is to moving to the valve fully open position collided with valve body main part 200 or parts of bearings 260 axially below, thus, the auxiliary air E of maximum stream flow can be made by connecting path F.There is the diaphragm type control valve for fluids 100 of above-mentioned structure, move to suitable position in the spool 220 movable range between above-mentioned valve fully open position and above-mentioned valve blocking position by making, it is possible to control pressure or the capacity of auxiliary air E.
But, in conventional diaphragm type control valve for fluids 100, negative pressure in compartment 360b reduces, spool 220 is to when moving to the valve fully open position of the stream opening auxiliary air E axially below, first retaining member 320 is as shown in Figure 5, collide with valve body main part 200 or parts of bearings 260, owing to tending to think that the impact sound (extraordinary noise) produced when this collision is vehicle noise, it is necessary to improve.
Utility model content
Utility model problem to be solved
The purpose of this utility model is in that to provide a kind of diaphragm type control valve for fluids, by seeking the rationalization of the structure of the first retaining member of clamping barrier film, can effectively suppress when such as spool moves to valve fully open position, the impact sound (extraordinary noise) occurred along with the collision of the first retaining member and valve body main part or parts of bearings.
For solving the scheme of problem
In order to achieve the above object, primary structure of the present utility model is as described below.
(1) a kind of control valve for fluids, including: valve body and control valve for fluids portion, described valve body has: the arrival end oral area imported for fluid, for fluid derive port of export oral area, and between described arrival end oral area and described port of export oral area, formed fluid from described arrival end oral area stream to the valve body main part of the connecting path of described port of export oral area；nullDescribed control valve for fluids portion has: be disposed in the spool in described connecting path，One end is connected with described spool、The movable rod that the other end is connected with the central part of barrier film and a pair retaining member that hold this barrier film，It is fixed on the inside of described valve body main part、The parts of bearings installed in the way of described movable rod is axially movable，With pressure duty space，This pressure duty space is separated into two compartments by described barrier film，Utilize the deformation of the described barrier film produced by the pressure differential of these two compartments，Described spool in described connecting path can be moved back and forth vertically，This control valve for fluids portion adjusts the axial location of the described spool in described connecting path，It is controlled by pressure or the capacity of the fluid in described connecting path towards described port of export oral area from described arrival end oral area，It is characterized in that，The first retaining member being positioned at the side relative with described valve body main part in the pair of retaining member，In the surface portion collided with described valve body main part or described parts of bearings when described spool moves to valve fully open position，There is the convex shaped part being made up of padded coaming.
(2) the diaphragm type control valve for fluids according to above-mentioned (1), it is characterised in that the height of described convex shaped part is towards described valve body main part side 1mm more than higher than the imaginary bottom surface of described first retaining member.
(3) the diaphragm type control valve for fluids according to above-mentioned (1) or (2), it is characterised in that described convex shaped part is formed by the annular projection extended continuously on same circumference.
(4) the diaphragm type control valve for fluids according to above-mentioned (1) or (2), it is characterized in that, described convex shaped part is formed by the annulus extended continuously on same circumference and the multiple segmentation projections being arranged on same circumference in the compartment of terrain, inner circumferential side of this annulus.
Effect of the present utility model
According to this utility model, a kind of diaphragm type control valve for fluids can be provided, wherein, the first retaining member being positioned at the side relative with valve body main part in a pair retaining member, in the surface portion collided with valve body main part or parts of bearings when spool moves to valve fully open position, there is the convex shaped part being made up of padded coaming, thus, when such as spool moves to valve fully open position, can effectively suppress the collision along with the first retaining member and valve body main part or parts of bearings and the impact sound (extraordinary noise) that occurs.
Accompanying drawing explanation
Fig. 1 is the sectional view according to typical diaphragm type control valve for fluids of the present utility model, it is shown that spool is in the state of valve fully open position.
Fig. 2 is the sectional view of the diaphragm type control valve for fluids of Fig. 1, it is shown that spool is in the state of valve blocking position.
Fig. 3 is the situation extracted by the first retaining member of the diaphragm type control valve for fluids shown in pie graph 1, and Fig. 3 (a) is sectional view, and Fig. 3 (b) is top view.
Fig. 4 illustrates another embodiment of the first retaining member, and Fig. 4 (a) is sectional view, and Fig. 4 (b) is top view.
The sectional view of the diaphragm type control valve for fluids that Fig. 5 is those that have previously been.
The explanation of accompanying drawing labelling
10 diaphragm type control valves for fluids
12 valve bodies
14 control valve for fluids portions
16 arrival end oral areas
18 port of export oral areas
20 valve body main parts
22 spools
24 movable rod
26 parts of bearings
28 pressure duty spaces
30 barrier films
32 (the first) retaining members
34 (the second) retaining members
36a the second compartment
36b the first compartment
38 springs
39 valve seats
40 connecting pipes
42 check-valves portions
44 convex shaped parts
46 installing holes
48 flange parts
50 annulus
52 segmentation projections
E fluid (or (secondary) air)
The connecting path of F fluid
The height from imagination bottom surface of h convex shaped part
M imagination bottom surface
The whole height of H convex shaped part
Detailed description of the invention
Below with reference to accompanying drawings embodiment of the present utility model is illustrated.
Fig. 1 and Fig. 2 is that Fig. 1 illustrates that the spool state at valve fully open position, Fig. 2 illustrate the spool state in valve blocking position in order to understand the internal structure of the major part according to typical diaphragm type control valve for fluids of the present utility model and diagram that cutting obtains.Fig. 3 illustrates the situation extracted by the first retaining member of the diaphragm type control valve for fluids shown in pie graph 1.
The control valve for fluids of the secondary air lead-in device of the aerofluxus that the diaphragm type control valve for fluids 10 of diagram has been used in the petrolic gas extraction system pipe arrangement of purification, mainly includes valve body 12 and control valve for fluids portion 14.
Valve body 12 includes: be provided as air (auxiliary air) E of the fluid arrival end oral area 16 imported, for the air E port of export oral area 18 derived, and between arrival end oral area 16 and port of export oral area 18, form the air E valve body main part 20 of connecting path F from arrival end oral area 16 stream to port of export oral area 18, port of export oral area 18 is connected to gas extraction system pipe arrangement (not shown) by secondary air supply pipe (not shown).In the illustrated embodiment, connecting path F is formed as substantially vertical with the axis of the axis of arrival end oral area 16 and port of export oral area 18, but is not limited to such structure, it is possible to adopt various ways.
Control valve for fluids 14 includes spool 22, movable rod 24, parts of bearings 26 and pressure duty space 28, by making movable rod 24 move axially to adjust the axial location of the spool 22 in connecting path F, thus controlling from arrival end oral area 16 towards port of export oral area 18 by the pressure of the air E of connecting path F or capacity.
Spool 22 is disposed in connecting path F, movable rod 24 is configured to: one end is connected with spool 22, the other end is connected with the central part of barrier film 30 and a pair retaining member 32,34 that hold this barrier film 30, and spool 22 can move back and forth along described axis direction in connecting path F.
Parts of bearings 26 is fixed on the inside of valve body main part 20, and installs in the axially displaceable mode of movable rod 24.
Pressure duty space 28 is separated into two compartments by barrier film 30, namely, via the first compartment 36b that connecting pipe 40 connects with gas handling system pipe arrangement (not shown), with the second compartment 36a connected with described connecting path F via through hole (not shown), and be configured to: make the internal pressure (negative pressure) of gas handling system pipe arrangement import the first compartment 36b by connecting pipe 40, between the first compartment 36b and the second compartment 36a, thus produce pressure differential, utilize this pressure differential, generation makes the driving force that barrier film 30 deforms to axial top (direction close to connecting pipe 40).On the other hand, between spool 22 and valve body main part 20, it is configured with and always barrier film 30 is applied the spring 38 of elastic force to (direction away from connecting pipe 40) axially below.
Diaphragm type control valve for fluids 10 is configured to: utilize (counteracting) relation at mutually different active force axially of described driving force and described spring force, it is possible to make barrier film 30 and the movable rod 24 integrated with this barrier film 30 and spool 22 move in the axial direction.Specifically, when the internal pressure utilizing gas handling system pipe arrangement imports high negative pressure to the first compartment 36b, pressure differential is produced between the first compartment 36b and the second compartment 36a, when the driving force based on this pressure differential is more than the spring force of spring 38, barrier film 30 deforms to axially top, additionally, less negative pressure is being imported to the first compartment 360b by the internal pressure of gas handling system pipe arrangement, or when not importing negative pressure, owing to the spring force of spring 38 is more than the driving force produced based on the pressure differential between the first compartment 36b and the second compartment 36a, then barrier film 30 is to deforming axially below, deformation along with such barrier film 30, movable rod 24 and spool 22 is made to move in axial direction.
So, when the negative pressure in the first compartment 36b uprises, as shown in Figure 2, along with the barrier film 30 deformation to axially top, spool 22 moves to, to axially top, the valve blocking position crimped with valve seat 39, thus, the stream of auxiliary air E can be blocked, additionally, when the negative pressure in the first compartment 36b diminishes, as shown in Figure 1, along with barrier film 30 under the effect of the spring force of spring 38 to deformation axially below, spool 22 moves away valve seat 39, first retaining member 32 of clamping barrier film 30 is to moving to the valve fully open position collided with valve body main part 20 or parts of bearings 26 axially below, thus, the auxiliary air E of maximum stream flow can be made by connecting path F.There is the diaphragm type control valve for fluids 10 of above-mentioned structure, move to suitable position in the spool 22 movable range between above-mentioned valve fully open position and above-mentioned valve blocking position by making, it is possible to control pressure or the capacity of auxiliary air E.
In addition, illustrate the situation being further provided with check-valves 42 in the embodiment in figure 1, position in port of export oral area 18 side of control valve for fluids 14, when the pressure of ingress port 16 side becomes more than than the high setting of the pressure of port of export oral area 18 side, valve is opened, make air E pass through and arrive port of export oral area 18 side, even and if the state that during the pressure height of the pressure ratio arrival end oral area 16 of port of export oral area 18 side, valve also remains turned-off, stop air E from port of export oral area 18 to the refluence of arrival end oral area 16 side.
A pair retaining member 32 being mainly characterized by seeking to clamp barrier film 30 of structure of the present utility model, the rationalization of the structure of 34, more specifically, for a pair retaining member 32, in 34, it is positioned at the first retaining member 32 with valve body main part 20 opposite side, on the surface portion 32a that itself and valve body main part 20 or parts of bearings 26 collide, the convex shaped part 44 being made up of padded coaming is set, by adopting such structure, such a diaphragm type control valve for fluids 10 can be provided, it can suppress the impact sound (extraordinary noise) colliding and producing along with the first retaining member 32 with valve body main part 20 or parts of bearings 26 when such as spool moves to valve fully open position effectively.
In the embodiment shown in fig. 3, the base material of the first retaining member 32 has the flat shape of general toroidal, formed by metal materials such as rustless steel, the such carbon steel of SPCC, the installing hole 46 being used for being connected to one end of movable rod 24 is formed at central part, the flange part 48 prominent to valve body main part 20 side is formed in outer peripheral edge, on the surface 32a of the base material of valve body main part 20 side between installing hole 46 and flange part 48 of the first retaining member 32, it is provided with the convex shaped part 44 being made up of padded coaming and being made up of the annular projection extended continuously on same circumference.
In this utility model, need to form following structure: the convex shaped part 44 of the first retaining member 32 is by NBR (nitrile rubber), H-NBR (hydrogenated nitrile-butadiene rubber), FKM (fluorubber, vinylidene fluoride rubber) etc. padded coaming constitute, even if the first retaining member 32 collides with valve body main part 20 or parts of bearings 26, the substrate surface 32a of the first retaining member 32, outer edge bead portion 48 are also not directly contacted with parts of bearings 26, valve body main part 20.
For the arranging shape of convex shaped part 44, as long as the substrate surface 32a of the first retaining member 32, outer edge bead portion 48 are not directly contacted with parts of bearings 26, valve body main part 20, it is possible to be any shape, and various embodiment can be adopted.For example, it is possible to make convex shaped part 44 as shown in Figure 4, the annulus 50 extended continuously on same circumference and multiple (in Fig. 4 being 4) that are arranged in the compartment of terrain, inner circumferential side of this annulus 50 on same circumference segmentation projection 52 form.
Height h for convex shaped part 44, it is preferable that towards valve body main part 20 side 1mm more than higher than the imaginary bottom surface m of described first retaining member 32, the convex shaped part 44 whole height H from the substrate surface 32a of described first retaining member 32 is preferably more than 2mm.Here what is called " the imaginary bottom surface m of described first retaining member 32 " refers to, when the cross section of the first retaining member 32 is observed, by by the substrate surface 32a side of the first retaining member 32 near the plane (in figure 3 the plane represented by the straight line between the endface position with connection outer edge bead portion 48) represented by the straight line connected between the position of valve body main part 20 side.
Foregoing only illustrates an example of embodiment of the present utility model, it is possible to make various changes within the scope of the claims.Such as, for convex shaped part 44, it is contemplated that impact force when the first retaining member 32 collides with valve body main part 20 or parts of bearings 26, it is possible to properly select the hardness of the padded coaming constituting convex shaped part 44.
Industrial applicability
According to this utility model, a kind of diaphragm type control valve for fluids can be provided, can effectively suppress when such as spool moves to valve fully open position, the impact sound (extraordinary noise) occurred along with the collision of the first retaining member and valve body main part or parts of bearings.Diaphragm type control valve for fluids of the present utility model is applicable not only to SAME Secondary Air Management Control, is also expected to be applicable to the control valve of the various technical fields such as EGR (exhaust gas recirculatioon).
Claims (4)
1. a diaphragm type control valve for fluids, including valve body and control valve for fluids portion,
Described valve body has:
For the arrival end oral area that fluid imports,
For the port of export oral area that fluid is derived, and
Between described arrival end oral area and described port of export oral area and form fluid from described arrival end oral area stream to the valve body main part of the connecting path of described port of export oral area；
Described control valve for fluids portion has:
It is disposed in the spool in described connecting path,
The movable rod that one end is connected with described spool, the other end is connected with the central part of barrier film and a pair retaining member clamping this barrier film,
The inside being fixed on described valve body main part the parts of bearings installed in the way of described movable rod is axially movable, and
Pressure duty space, this pressure duty space is separated into two compartments by described barrier film, utilizes the deformation of the described barrier film produced by the pressure differential of these two compartments, it is possible to make described spool move back and forth vertically in described connecting path,
This control valve for fluids portion adjusts the axial location of the described spool in described connecting path, is controlled by pressure or the capacity of the fluid in described connecting path towards described port of export oral area from described arrival end oral area,
Described diaphragm type control valve for fluids is characterised by,
In the pair of retaining member, be positioned at the first retaining member of the side relative with described valve body main part, in the surface portion collided with described valve body main part or described parts of bearings when described spool moves to valve fully open position, there is the convex shaped part being made up of padded coaming.
2. diaphragm type control valve for fluids according to claim 1, it is characterised in that the height of described convex shaped part is towards described valve body main part side 1mm more than higher than the imaginary bottom surface of described first retaining member.
3. diaphragm type control valve for fluids according to claim 1 and 2, it is characterised in that described convex shaped part is formed by the annular projection extended continuously on same circumference.
4. diaphragm type control valve for fluids according to claim 1 and 2, it is characterised in that described convex shaped part is formed by the annulus extended continuously on same circumference and the multiple segmentation projections being arranged on same circumference in the compartment of terrain, inner circumferential side of this annulus.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-000388U | 2015-01-29 | ||
| JP2015000388U JP3196931U (en) | 2015-01-29 | 2015-01-29 | Fluid control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205370699U true CN205370699U (en) | 2016-07-06 |
Family
ID=52986541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620045303.XU Active CN205370699U (en) | 2015-01-29 | 2016-01-18 | Fluid control valve |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3196931U (en) |
| CN (1) | CN205370699U (en) |
-
2015
- 2015-01-29 JP JP2015000388U patent/JP3196931U/en active Active
-
2016
- 2016-01-18 CN CN201620045303.XU patent/CN205370699U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP3196931U (en) | 2015-04-09 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |