CN205559908U - Decompression filter equipment - Google Patents
Decompression filter equipment Download PDFInfo
- Publication number
- CN205559908U CN205559908U CN201620418158.5U CN201620418158U CN205559908U CN 205559908 U CN205559908 U CN 205559908U CN 201620418158 U CN201620418158 U CN 201620418158U CN 205559908 U CN205559908 U CN 205559908U
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- Prior art keywords
- chamber
- shell component
- pressure
- piston
- valve seat
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- 230000006837 decompression Effects 0.000 title abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000002955 isolation Methods 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 229940074869 marquis Drugs 0.000 abstract description 2
- VBUNOIXRZNJNAD-UHFFFAOYSA-N ponazuril Chemical compound CC1=CC(N2C(N(C)C(=O)NC2=O)=O)=CC=C1OC1=CC=C(S(=O)(=O)C(F)(F)F)C=C1 VBUNOIXRZNJNAD-UHFFFAOYSA-N 0.000 abstract description 2
- 230000006978 adaptation Effects 0.000 abstract 1
- 210000000981 epithelium Anatomy 0.000 description 6
- 238000001914 filtration Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008844 regulatory mechanism Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
The utility model discloses a decompression filter equipment, it includes: the shell subassembly, the relative gliding case subassembly of shell subassembly of ability, the case subassembly includes: the disk seat, the outer wall of disk seat and the inner wall looks adaptation of shell subassembly to separate the inner chamber of shell subassembly for the first cavity of mutual isolation and second cavity, first cavity can communicate with the delivery port, and the second cavity is kept apart with water inlet and delivery port respectively, the valve rod, a piston. And elastic element, and filter element group spare. The embodiment of the utility model provides an in decompression filter equipment have following effect: owing to adopt inflexible case subassembly, its resistant marquis's nature probably better, life -span probably longer, be difficult to leak, be provided with the pressure regulating device, can adjust the compression force of spring, impurity can be held back filter core outside be convenient for blowdown for entering out outward to the direction of water through the filter core, the setting can be discharged impurity at second troops under one's command end blowoff valve, for the ease of the installation, the piston is the barrel of definite value for the external diameter.
Description
Technical field
This utility model relate to a kind of water treatment facilities, particularly relates to a kind of pressure-reducing filter.
Background technology
In the prior art, usually decompressor and filter assemblies are integrated on a device formation pressure-reducing filter.Such as,
Application No. " 201020583148.X ", the patent application of entitled " band decompression backwash filter " in Chinese patent storehouse
In disclose a kind of filter, it includes shell component, the filter body being placed in shell component, pressure adjusting part, described pressure
Adjusting part includes that core assembly, described core assembly include spring base, guide post, flap, water conservancy diversion plug, flap seat, epithelium
Seat and epithelium, spring base and water conservancy diversion plug are connected with guide post respectively, and flap is fixed on involucra seat by flap seat, water conservancy diversion plug top
Gap between portion and flap is the aperture of this core assembly, and size is variable, and epithelium is fixed between spring base and involucra seat, and
And forming cavity between involucra seat, the square three-way groove that this cavity is uniformly distributed along the circumference with involucra seat communicates, and water conservancy diversion plug is uniformly distributed along the circumference
Fan-shaped pylone communicates with gap.
But, show through practice and research, owing to epithelium is susceptible to aging, the filter being therefore made up of epithelium, it is resistance to
Marquis's property may poor, life-span may shorter, be relatively easy to leak.
Utility model content
In order to overcome the drawbacks described above of prior art, the application embodiment technical problem to be solved there is provided a kind of decompression
Defecator, it can solve at least one in the problems referred to above.
Concrete technical scheme of the present utility model is:
A kind of pressure-reducing filter, it includes:
Shell component, described shell component has water inlet and outlet；
Can the most described shell component slide core assembly, described core assembly includes:
Valve seat, the outer wall of described valve seat is suitable with the inwall of described shell component, thus the inner chamber of described shell component is divided into phase
Mutually the first chamber of isolation and the second chamber, described first chamber can connect with described outlet, described second chamber respectively with institute
State water inlet and the isolation of described outlet；
Valve rod, described valve rod is arranged on described valve seat, and is positioned at described first chamber；
Piston, described piston bush is located on described valve rod, and the outer wall of described piston is suitable with the inwall of described shell component, described
Can be formed between piston with described shell component and slide and the gap of aperture change with the relative described shell component of described piston；And
Flexible member, described flexible member is positioned at described second chamber, described flexible member two ends respectively with described valve seat and institute
State shell component to connect；And
Element kit, described element kit is arranged in described shell component, and the inner chamber of described element kit is by being opened in described work
Pod apertures beyond the Great Wall and described first chamber, the outer wall of described element kit and the formation of the inwall of described shell component with described enter
3rd chamber of mouth of a river connection.
Preferably, described core assembly is positioned at the top of described element kit, and described second chamber is positioned at the upper of described first chamber
Side.
Preferably, described shell component has the stage portion relative with the bottom of described valve seat.
Preferably, it is provided with sealing gasket at described shell component just top to described piston.
Preferably, described shell component is provided with and the pollution discharge mechanism of described 3rd chamber.
Preferably, described shell component includes shell body, the pressure regulating device being arranged on described shell body, and described pressure regulating device includes
Threaded with described shell body and the stud in described second chamber can be stretched into, the two ends of described flexible member respectively with described spiral shell
Post and described valve seat connect.
Preferably, described valve seat is formed towards the lobe that protrudes above, the two ends of described flexible member respectively with described shell component
Connect with described lobe.
Preferably, described shell component offers and the air vent of described second chamber.
Preferably, described pressure-reducing filter includes the control device being arranged in described second chamber, described control device energy root
According to the fluid entered in described second chamber to described Exhaust Open or closedown.
Preferably, described piston be an external diameter be the cylinder of preset value, the sectional area of the upper surface of described piston be less than described piston
The sectional area of lower surface.
Preferably, to add upper piston upper surface area sum little with the ratio of the lower surface area of valve seat for the lower surface area of described valve rod
Preferable in 0.03.
Preferably, described core assembly is made up of metal or plastics.
Pressure-reducing filter in this utility model embodiment has the effect that
1, owing to using the core assembly of rigidity, its weather resisteant may preferably, the life-span may longer, be not easy to leak；
2, it is provided with pressure regulating device, the compression stress of spring can be adjusted；
3, water is by the direction of filter element for going out in entering outward, can be trapped in outside filter element by impurity, it is simple to blowdown；
4, it is arranged on second subordinate's end blowoff valve can be discharged by impurity；
5, for the ease of install, piston be external diameter be the cylinder of definite value.
Accompanying drawing explanation
Accompanying drawing described here is only used for task of explanation, and is not intended to limit this utility model scope of disclosure by any way.
It addition, the shape of each parts in figure and proportional sizes etc. are only schematically, it is adapted to assist in understanding of the present utility model, and
It not shape and the proportional sizes specifically limiting each parts of this utility model.Those skilled in the art is in teaching of the present utility model
Under, various possible shape and proportional sizes can be selected as the case may be to implement this utility model.
Fig. 1 shows a specific embodiment of pressure-reducing filter in the application.
Fig. 2 is the part close-up schematic view of Fig. 1.
The reference of the figures above is: 1, shell component；11, Part I；12, Part II；13, Part III；
14, water inlet；15, outlet；21, the first chamber；22, the second chamber；23, the 3rd chamber；31, valve seat；32、
Valve rod；33, piston；331, upper surface；332, lower surface；333, gap；334, the lower surface of valve seat；34, protruding
Portion；35, spacer shell；4, flexible member；51, stud；52, sealing gasket；6, element kit；7, stage portion；8, row
Dirty mechanism；9, device is controlled.
Detailed description of the invention
In conjunction with accompanying drawing and the description of this utility model detailed description of the invention, it is possible to clearly understand details of the present utility model.
But, detailed description of the invention of the present utility model described here, it is only used for explaining the purpose of this utility model, and can not be to appoint
Where formula is understood as is to restriction of the present utility model.Under teaching of the present utility model, technical staff is it is contemplated that based on this reality
With the most possible novel deformation, these are regarded as belonging to scope of the present utility model.
Shown in seeing figures.1.and.2, the embodiment of the present application discloses a kind of pressure-reducing filter, and it includes: shell component 1, institute
State shell component 1 and there is water inlet 14 and outlet 15；Can the most described shell component 1 slide core assembly, described spool group
Part includes: valve seat 31, and the outer wall of described valve seat 31 is suitable with the inwall of described shell component 1, thus by described shell component 1
Inner chamber be divided into the first mutually isolated chamber 21 and the second chamber 22, described first chamber 21 can be with described outlet 15
Connection, described second chamber 22 is isolated with described water inlet 14 and described outlet 15 respectively；Valve rod 32, described valve rod 32
It is arranged on described valve seat 31, and is positioned at described first chamber 21；Piston 33, described piston 33 is set in described valve rod
On 32, the outer wall of described piston 33 is suitable with the inwall of described shell component 1, and described piston 33 offers for by described
One chamber 21 and the pod apertures of the inner space of described element kit 6, can be formed between described piston 33 and described shell component 1
Slide with the described the most described shell component of piston 33 1 and aperture change gap 333；And flexible member 4, described elastic unit
Part 4 is positioned at described second chamber 22, and described flexible member 4 two ends are connected with described shell component 1 with described valve seat 31 respectively；
And element kit 6, described element kit 6 is arranged in described shell component 1, the inner chamber of described element kit 6 and described the
One chamber 21 connects, and the outer wall of described element kit 6 connects with described water inlet 14 with the formation of the inwall of described shell component 1
3rd chamber 23.
Concrete, shell component 1 includes Part I 11, Part II 12, Part III 13 and isolation part.Part I 11
The cylindrical shape substantially extended along left-to-right in axis.The right-hand member of Part I 11 is provided with water inlet 14, leads from outside to accept
The water entered.The left end of Part I 11 is provided with outlet 15, will derive through filtration and/or post-decompression water.Second
12 are divided to extend along up to lower.Described Part II 12 is arranged on the top of described Part I 11.Described shell component 1 also wraps
Include the Part III 13 of the bottom being arranged on Part I 11.The Part III 13 substantially up to lower cylindrical shape extended in edge in axis.
Described isolation part is arranged in Part I 11, so that water inlet 14 the most directly connects with outlet 15, thus forms water certainly
Water inlet 14 is by the runner derived from outlet 15 after element kit 6, core assembly.
Core assembly includes valve seat 31, valve rod 32 and piston 33.The outer wall of valve seat 31 is suitable with the inwall of Part II 12,
Thus the inner chamber of shell component 1 is divided into the first mutually isolated chamber 21 and the second chamber 22.Second chamber 22 and the first chamber
Room 21 lays respectively at two sides up and down of valve seat 31, and the second chamber 22 is positioned at the top of the first chamber 21, the first chamber 21
Connect with outlet 15.Valve rod 32 is positioned at the first chamber 21, and the upper end of valve rod 32 is connected with valve seat 31, valve rod 32
Piston 33 it is arranged with outside lower end.The outer wall of piston 33 is suitable with the inwall of the isolation part of shell component 1.Can open on piston 33
Be provided with multiple circumferentially arrange can be in fan-shaped pod apertures (not shown).At the relative shell component 1 of piston 33 along vertically
In the sliding process of direction, the gap 333 formed between top and the inwall of shell component 1 of piston 33 becomes big therewith or diminishes.
In the present embodiment, described core assembly is made up of metal or plastics.The filter of epithelium is included compared to prior art,
Owing to the core assembly in present embodiment is rigidity, thus the weatherability of the core assembly in present embodiment is preferable, is available for
Use lasts a long time, and sealing is preferable, it is not easy to leak.
Flexible member 4 can be spring.The upper end of spring is connected with shell component 1, and the lower end of spring is connected with valve seat 31.?
In present embodiment, described valve seat 31 is formed towards the lobe 34 protruded above.The lower end of described spring and described valve seat 31
Lobe 34 connect.Described shell component 1 includes shell body, the pressure regulating device being arranged on described shell body, described pressure regulation
Mechanism includes threadeding with described shell body and stretching into the stud 51 in described second chamber 22, and the upper end of described spring is fixed
It is positioned on described stud 51.By said structure, stud 51 can be stretched into the length in the second chamber 22 by screw thread,
That is, the distance between stud 51 and valve seat 31, is adjusted.Spring moves up and down generation spring-compressed with stud 51
The change of amount and then the change of generation spring force.
When core assembly vertically slides relative to shell component 1, spring can be squeezed, it is also possible to carries to core assembly
For reset force.Concrete, when the pressure of the water that this pressure-reducing filter receives increases, water promotes piston 33 to move upward,
And band ovable valve stem 32 and valve seat 31 move upward therewith, thus spring is compressed, and reduce the top of piston 33 with
The gap 333 formed between the inwall of shell component 1, i.e. decreases the aperture of this core assembly.When this pressure-reducing filter receives
When the pressure of the water arrived reduces, spring provides reset force to valve seat 31, promotes valve seat 31 to move downward, and band ovable valve stem 32
And piston 33 moves downward therewith, and increase the gap 333 formed between the top of piston 33 and the inwall of shell component 1,
I.e. add the aperture of this core assembly.
Element kit 6 includes the filter screen being at least partially disposed in Part III 13.The outer wall of filter screen and the second of shell component 1
Forming the 3rd chamber 23 between the inwall of part 12, the 3rd chamber 23 connects with water inlet 14, to accept to enter from water inlet 14
Enter the water of this pressure-reducing filter.The inner chamber of filter screen is connected with described first chamber 21 by the pod apertures of piston 33.Through filtering
Water after net filtration, after being regulated by core assembly, is discharged from outlet 15.Preferably, described shell component 1 be provided with
The pollution discharge mechanism 8 of described 3rd chamber 23 connection.In the present embodiment, water from the 3rd chamber 23 from and enter outward filter element
In the inner chamber of assembly 6.Thus impurity is trapped in the outside of element kit 6 by filter screen, in the i.e. the 3rd chamber 23.When impurity tires out
When amassing to a certain extent, the impurity in the 3rd chamber 23 can be will be located in by pollution discharge mechanism 8 row by opening pollution discharge mechanism 8
Go out.
In an optional embodiment, see figures.1.and.2 shown in, described shell component 1 just top to described piston 33
Sealing gasket 52 it is provided with at portion.When the pressure of the water in element kit 6 reaches preset value, it is positioned in the inner chamber of element kit 6
Water piston 33 can be promoted to move upward, and make the top of piston 33 offset with sealing gasket 52, thus by the first chamber 21 with
Outlet 15 is isolated.When the pressure of the middle water of element kit 6 is less than preset value, under the reset response of flexible member 4,
Piston 33 can move downward, and forms gap 333 between the top of piston 33 and shell component 1, thus by the first chamber
21 connect with outlet 15.Thus, the pressure limit of the water flowed out from its outlet 15 can wanted by this pressure-reducing filter
In the range of asking, i.e. when forefront pressure is too high, this pressure-reducing filter turns off to protect downstream unit.It is highly preferred that seal
Pad 52 can be made up of elastomeric material, is acted on the pressure on shell component 1 with buffering by piston 33.
In another optional embodiment, with reference to shown in Fig. 2, described shell component 1 has and the bottom of described valve seat 31
Relative stage portion 7.When piston 33 moves downwardly to certain distance, stage portion 7 can offset with the bottom of valve seat 31,
So that piston 33 is carried out spacing.When piston 33 moves upward certain distance, spacer shell 35 and the upper raised step of piston 33
Offset, so that piston 33 is carried out spacing, pressure can be avoided to cross ambassador's piston to sealing gasket 52 incised wound, increase service life.
In one preferred embodiment, with reference to shown in Fig. 1, in order to make core assembly motion smooth and easy, the second of shell component 1
The air vent (not shown) connected with the second chamber 22 is offered in part 12.It is highly preferred that described filtration under diminished pressure dress
Putting the control device 9 including being arranged in described second chamber 22, described control device 9 can be according to entering described second chamber
Fluid in 22 is to described Exhaust Open or closedown.After a certain amount of water enters the second chamber 22, control device 9 permissible
By exhaust close, thus ensure will not reveal when leakage occurs in this pressure-reducing filter.Concrete, control device 9
Can be ball-cock assembly, electromagnetic valve etc. other there is the device of similar opening and closing function.
In one preferred embodiment, owing to the outer wall of piston 33 have to be adaptive with the inwall of isolation part, thus in order to
Easy for installation and prevent leakage, piston 33 be an external diameter be the cylinder of preset value.In order to be able to the pressure effect making piston 33 at water
Under move upward, the sectional area of piston 33 lower surface 332 is more than the sectional area of piston 33 upper surface 331.Learn through measuring and calculating,
The lower surface area of described valve rod 32 adds the ratio of upper piston 33 upper surface area 331 sum and lower surface 334 area of valve seat
Preferable less than 0.03.
Each embodiment in this specification all uses the mode gone forward one by one to describe, and what each embodiment stressed is and it
The difference of his embodiment, between each embodiment, identical similar part sees mutually.
Above-mentioned embodiment only for technology of the present utility model design and feature are described, its object is to allow person skilled in the art
Scholar will appreciate that content of the present utility model and implements according to this, can not limit protection domain of the present utility model with this.All bases
The equivalence that this utility model spirit is made changes or modifies, and all should contain within protection domain of the present utility model.
Claims (12)
1. a pressure-reducing filter, it is characterised in that it includes:
Shell component, described shell component has water inlet and outlet；
Can the most described shell component slide core assembly, described core assembly includes:
Valve seat, the outer wall of described valve seat is suitable with the inwall of described shell component, thus is divided by the inner chamber of described shell component
Being divided into the first mutually isolated chamber and the second chamber, described first chamber can connect with described outlet, and described second chamber divides
Not with described water inlet and the isolation of described outlet；
Valve rod, described valve rod is arranged on described valve seat, and is positioned at described first chamber；
Piston, described piston bush is located on described valve rod, and the outer wall of described piston is suitable with the inwall of described shell component,
Can be formed between described piston with described shell component and slide and the gap of aperture change with the relative described shell component of described piston；And
Flexible member, described flexible member is positioned at described second chamber, described flexible member two ends respectively with described valve seat and institute
State shell component to connect；And
Element kit, described element kit is arranged in described shell component, and the inner chamber of described element kit is by being opened in described work
Pod apertures beyond the Great Wall and described first chamber, the outer wall of described element kit and the formation of the inwall of described shell component with described enter
3rd chamber of mouth of a river connection.
Pressure-reducing filter the most according to claim 1, it is characterised in that described core assembly is positioned at described filter element group
The top of part, described second chamber is positioned at the top of described first chamber.
Pressure-reducing filter the most according to claim 2, it is characterised in that described shell component has and described valve seat
The stage portion that bottom is relative.
Pressure-reducing filter the most according to claim 2, it is characterised in that described shell component just top to described piston
Sealing gasket it is provided with at portion.
Pressure-reducing filter the most according to claim 1, it is characterised in that described shell component is provided with and the described 3rd
The pollution discharge mechanism of chamber.
Pressure-reducing filter the most according to claim 1, it is characterised in that described shell component includes shell body, setting
Pressure regulating device on described shell body, described pressure regulating device includes threadeding with described shell body and stretching into described second chamber
Indoor stud, the two ends of described flexible member are connected with described stud and described valve seat respectively.
Pressure-reducing filter the most according to claim 2, it is characterised in that be formed with what court protruded above on described valve seat
Lobe, the two ends of described flexible member are connected with described shell component and described lobe respectively.
Pressure-reducing filter the most according to claim 1, it is characterised in that offer on described shell component and described
The air vent of two chamber.
Pressure-reducing filter the most according to claim 8, it is characterised in that described pressure-reducing filter includes being arranged on
Control device in described second chamber, described control device can be according to the fluid entered in described second chamber to described air vent
Open or close.
Pressure-reducing filter the most according to claim 1, it is characterised in that described piston be an external diameter be preset value
Cylinder, the sectional area of the upper surface of described piston is less than the sectional area of described piston lower surface.
11. pressure-reducing filters according to claim 10, it is characterised in that the lower surface area of described valve rod adds
Piston upper surface area sum is preferable less than 0.03 with the ratio of the lower surface area of valve seat.
12. pressure-reducing filters according to claim 1, it is characterised in that described core assembly is by metal or plastics system
Become.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620418158.5U CN205559908U (en) | 2016-05-10 | 2016-05-10 | Decompression filter equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620418158.5U CN205559908U (en) | 2016-05-10 | 2016-05-10 | Decompression filter equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205559908U true CN205559908U (en) | 2016-09-07 |
Family
ID=56803911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620418158.5U Active CN205559908U (en) | 2016-05-10 | 2016-05-10 | Decompression filter equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205559908U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106268061A (en) * | 2016-08-31 | 2017-01-04 | 宁波亚德客自动化工业有限公司 | Big flow pressure regulation accurate filter |
| CN113546468A (en) * | 2021-08-06 | 2021-10-26 | 浙江海印数码科技有限公司 | Water-based ink filtering system and filtering method |
| CN113694582A (en) * | 2021-08-31 | 2021-11-26 | 绍兴拓邦电子科技有限公司 | Crystal silicon surface texturing additive and production preparation system thereof |
| CN118009035A (en) * | 2024-04-10 | 2024-05-10 | 浙江万里扬股份有限公司杭州分公司 | Hydraulic control device for CVT (continuously variable transmission) of motorcycle |
-
2016
- 2016-05-10 CN CN201620418158.5U patent/CN205559908U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106268061A (en) * | 2016-08-31 | 2017-01-04 | 宁波亚德客自动化工业有限公司 | Big flow pressure regulation accurate filter |
| CN106268061B (en) * | 2016-08-31 | 2018-07-27 | 宁波亚德客自动化工业有限公司 | Big flow pressure regulation accurate filter |
| CN113546468A (en) * | 2021-08-06 | 2021-10-26 | 浙江海印数码科技有限公司 | Water-based ink filtering system and filtering method |
| CN113546468B (en) * | 2021-08-06 | 2022-06-21 | 浙江海印数码科技有限公司 | Water-based ink filtering system and filtering method |
| CN113694582A (en) * | 2021-08-31 | 2021-11-26 | 绍兴拓邦电子科技有限公司 | Crystal silicon surface texturing additive and production preparation system thereof |
| CN118009035A (en) * | 2024-04-10 | 2024-05-10 | 浙江万里扬股份有限公司杭州分公司 | Hydraulic control device for CVT (continuously variable transmission) of motorcycle |
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