CN207486194U - A kind of piloted reducer - Google Patents
A kind of piloted reducer Download PDFInfo
- Publication number
- CN207486194U CN207486194U CN201721270090.1U CN201721270090U CN207486194U CN 207486194 U CN207486194 U CN 207486194U CN 201721270090 U CN201721270090 U CN 201721270090U CN 207486194 U CN207486194 U CN 207486194U
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- valve body
- main valve
- pilot valve
- spring
- spool
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Abstract
The utility model discloses a kind of piloted reducer, including：Main valve body, main valve body is interior to be equipped with main valve housing, the first hydraulic fluid port, the second hydraulic fluid port and the first connecting hole, main valve plug and the first spring is equipped in main valve housing, main valve plug and the first spring are connected；Pilot valve body, guide valve bushing is equipped in pilot valve body, it is connected through a screw thread between guide valve bushing and pilot valve body, second spring and flow straightener spool are equipped in guide valve bushing, flow straightener spool is connected with second spring, leads body base equipped with groove, the top of main valve housing can be assigned into groove, pilot valve body is equipped with the second connecting hole, and the second connecting hole is connected with the first connecting hole；Regulating device, regulating device are placed in pilot valve body, and positioned at pilot valve body one end, and regulating device is connected with flow straightener spool；Sealing device, sealing device is arranged on the other end of pilot valve body, and is connected with flow straightener spool.The utility model good airproof performance, not easy oil leakage is easy to maintenance, and service life is long.
Description
Technical field
The utility model is related to a kind of pressure reducing valves, and in particular to a kind of piloted reducer.
Background technology
Referring to Fig. 1, existing piloted reducer includes main valve body 11, main valve plug 12, main valve housing 13, pilot valve body 14, leads
Valve pocket component 15, valve seat 16, poppet valve core 17, the sealing ring 18 of axial seal, pressure-regulating device component 19 and radial seal
Sealing ring 20.
11 the inside dress main valve housing 13 of main valve body, 13 outside of main valve housing are negative by radial direction seal ring 20 with the sealing of main valve body 11
Duty；13 upper surface of main valve housing and the sealing of pilot valve body 14 are responsible for by axial sealing ring 18；Lead between main valve body 11 and pilot valve body 14
Screw connection is crossed, needs to offset the elastic force of sealing ring 18 when compressing, causes practical pressing force that can reduce in this way, in high-pressure work
When the easy oil leak between main valve body 11 and pilot valve body 14 especially in the case where there is shock loading.
In addition, 16 outer circle of valve seat is interference fitted with 14 endoporus of pilot valve body, assembling need to be cooled down with liquid nitrogen, cumbersome.
Furthermore it is blocked between guide valve bushing component 15 and valve seat 16 by elastic spring, it is loosely organized, and pressure-regulating device group
Part 19 is made of multiple parts, and axial length is longer.
Utility model content
The utility model to solve the above-mentioned problems, so as to provide a kind of piloted reducer.
In order to achieve the above objectives, the technical solution of the utility model is as follows：
A kind of piloted reducer, the piloted reducer include：
Main valve body, the main valve body is interior to be equipped with main valve housing, the first hydraulic fluid port, the second hydraulic fluid port and the first connecting hole, the main valve
Main valve plug and the first spring are equipped in set, the main valve plug and the first spring are connected；
Pilot valve body, the pilot valve body is interior to be equipped with guide valve bushing, is connected through a screw thread between the guide valve bushing and pilot valve body, described
Second spring and flow straightener spool are equipped in guide valve bushing, the flow straightener spool is connected with second spring, the pilot valve body
Bottom is equipped with groove, and the top of the main valve housing can be assigned into groove, and the pilot valve body is equipped with the second connecting hole, and described the
Two connecting holes are connected with the first connecting hole；
Regulating device, the regulating device are placed in pilot valve body, and positioned at pilot valve body one end, the regulating device with it is steady
Device spool is flowed to be connected；
Sealing device, the sealing device is arranged on the other end of pilot valve body, and is connected with flow straightener spool.
In a preferred embodiment of the utility model, several first diameters are equipped between the main valve housing and main valve body
To sealing ring, several second radial direction seal rings are equipped between the main valve housing and groove.
In a preferred embodiment of the utility model, the regulating device includes regulation handle, elastic spring, pressure regulation
Spring, sealing ring and poppet valve core, the regulation handle are limited by elastic spring in pilot valve body one end, and the sealing ring is arranged on
Between regulation handle and pilot valve body, the pressure spring is arranged on the contained spring intracavitary of regulation handle, described poppet valve core one end
It is connected with pressure spring, the other end is connect with guide valve bushing.
In a preferred embodiment of the utility model, the sealing device includes screw plug and spacer pin, described
Screw plug is arranged on the pilot valve body other end by thread seal, and the screw plug is equipped with pin hole, described spacer pin one end
It is fixed in pin hole, the other end can contact with flow straightener spool.
In a preferred embodiment of the utility model, filter screen is equipped in second connecting hole.
The beneficial effects of the utility model are：
The utility model good airproof performance, not easy oil leakage is easy to maintenance, and service life is long.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structure diagram of existing piloted reducer；
Fig. 2 is the structure diagram of the utility model.
Specific embodiment
In order to be easy to understand technical means, creative features, achievable purpose and effectiveness of the utility model, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
Referring to Fig. 2, piloted reducer provided by the utility model including main valve body 100, pilot valve body 200, adjusts dress
It puts and sealing device.
Main valve body 100, in the above equipped with main valve housing 110, the first hydraulic fluid port 120, the second hydraulic fluid port 130 and the first connecting hole
140。
111 and first spring 112 of main valve plug is equipped in main valve housing 110, main valve plug 111 is connected with the first spring 112.
When being installed into main valve body 100, top is located at outside main valve body 100 main valve housing 110.
Several first radial direction seal rings 113 are equipped between main valve housing 110 and main valve body 100.
Pilot valve body 200 is connected with main valve body 100, specifically can be equipped with groove 210, groove 210 in 200 bottom end of pilot valve body
With the top corresponding matching of main valve housing 110, the top of main valve housing 110 can be assigned into groove 210, on the top of main valve housing 110
Several second radial direction seal rings 211 are equipped between groove 210, be greatly improved in this way pilot valve body 200 and main valve body 100 it
Between leakproofness, and avoid original structure and will be fixed between pilot valve body 200 and main valve body 100 by screw, pilot valve body 200
Axial sealing ring is set to be sealed between main valve body 100, and the elastic force of axial sealing ring can offset screw pressing force
Situation.
Screw thread 220 is equipped in pilot valve body 200, and guide valve bushing 230 is directly fixed on by screw thread 220 in pilot valve body 200,
It is easy for installation and maintenance in this way.
Second spring 231 and flow straightener spool 232, flow straightener spool 232 and second spring are equipped in guide valve bushing 230
231 are connected.
Regulating device is sealingly disposed in one end of pilot valve body 200, including regulation handle 310, elastic spring 320, adjusts
Pressing spring 330, sealing ring 340 and poppet valve core 350.
Regulation handle 310 can directly assign into pilot valve body 200, can greatly reduce the axial length of the application in this way.
When regulation handle 310 is assigned into pilot valve body 200, by elastic spring 320, specifically limiting exists regulation handle 310
200 one end of pilot valve body, and sealing ring 340 is set to improve leakproofness between pilot valve body 200 and regulation handle 310.
Spring cavity is directly provided in regulation handle 310, pressure spring 330 is arranged in spring cavity, and poppet valve core 350 1
End is connect with pressure spring 330, and the other end is connect with guide valve bushing 230.
Sealing device is sealed for the other end to pilot valve body 200, including screw plug 410 and limiting
Pin 420.
Screw plug 410 is arranged on 200 other end of pilot valve body by thread seal, and pin hole is equipped on screw plug 410,
420 one end of spacer pin is fixed in pin hole, and the other end is accessible with flow straightener spool 232, and spacer pin 420 can be to flow straightener spool
232 are limited, while the also shock of the spool of resistance to flow straightener 232.
By the setting of above-mentioned sealing device, with using spacing shim ratio in existing structure, the application processing is easier, peace
Reliability height (will not turn down) after dress.
In addition, being equipped with the second connecting hole 240 on pilot valve body 200, the second connecting hole 240 is connected with the first connecting hole 140,
Convenient for the connection of fluid between pilot valve body 200 and main valve body 100.
Filter screen 241 is equipped in the second connecting hole 240, filter screen 241 can be used for zero inside protection pilot valve body 200
Part, can be clean by oil filtrating, prevents fluid excessively dirty so as to cause to damage to part.
Here is the specific work process of the application：
In static position, main valve plug 111 acts on to the initial position valve is normally opened, and fluid can be free by the first spring 112
Ground flows to the second hydraulic fluid port 130 from the first hydraulic fluid port 120, and 130 pressure of the second hydraulic fluid port is acted on main valve plug 111, while the second hydraulic fluid port
130 fluid are acted on by filter screen 241 and flow straightener spool 232 on poppet valve core 350.
If the pressure of the second hydraulic fluid port 130 is more than the setting value of pressure spring 330, poppet valve core 350 can overcome pressure spring
330 movements, at this point, poppet valve core 350 of the fluid through main valve plug 111 and unlatching, flows into the spring cavity of regulation handle 310, and from
The hydraulic fluid port Y outflows of pilot valve body 200, at this time because of pressure reduction at the spring cavity of main valve plug 111, make 111 guide valve body 200 of main valve plug
Direction is moved, and circumferential apertures change the circumferential apertures size on main valve housing 110 on main valve plug 111, is played and is reduced the second hydraulic fluid port 130
Pressure, until the setting value with pressure spring 330, the outlet pressure needed.
The basic principle of the utility model and main feature and the advantages of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principle of the utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
Various changes and modifications are had, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (5)
1. a kind of piloted reducer, which is characterized in that the piloted reducer includes：
Main valve body, is equipped with main valve housing, the first hydraulic fluid port, the second hydraulic fluid port and the first connecting hole in the main valve body, in the main valve housing
Equipped with main valve plug and the first spring, the main valve plug and the first spring are connected；
Pilot valve body, the pilot valve body is interior to be equipped with guide valve bushing, is connected through a screw thread between the guide valve bushing and pilot valve body, the pilot valve
Second spring and flow straightener spool are equipped in set, the flow straightener spool is connected with second spring, described to lead body base
Equipped with groove, the top of the main valve housing can be assigned into groove, and the pilot valve body is equipped with the second connecting hole, and described second connects
Hole is connect to connect with the first connecting hole；
Regulating device, the regulating device are placed in pilot valve body, and positioned at pilot valve body one end, the regulating device and flow straightener
Spool is connected；
Sealing device, the sealing device is arranged on the other end of pilot valve body, and is connected with flow straightener spool.
2. a kind of piloted reducer according to claim 1, which is characterized in that set between the main valve housing and main valve body
There are several the first radial direction seal rings, several second radial direction seal rings are equipped between the main valve housing and groove.
3. a kind of piloted reducer according to claim 1, which is characterized in that the regulating device includes adjusting hand
Handle, elastic spring, pressure spring, sealing ring and poppet valve core, the regulation handle are limited by elastic spring in pilot valve body one end,
The sealing ring is arranged between regulation handle and pilot valve body, and the pressure spring is arranged on the contained spring chamber of regulation handle
Interior, described poppet valve core one end is connected with pressure spring, and the other end is connect with guide valve bushing.
4. a kind of piloted reducer according to claim 1, which is characterized in that the sealing device includes screw plug
And spacer pin, the screw plug are arranged on the pilot valve body other end by thread seal, the screw plug is equipped with pin hole, institute
It states spacer pin one end to be fixed in pin hole, the other end can contact with flow straightener spool.
5. a kind of piloted reducer according to claim 1, which is characterized in that filtering is equipped in second connecting hole
Net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721270090.1U CN207486194U (en) | 2017-09-29 | 2017-09-29 | A kind of piloted reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721270090.1U CN207486194U (en) | 2017-09-29 | 2017-09-29 | A kind of piloted reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207486194U true CN207486194U (en) | 2018-06-12 |
Family
ID=62479276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721270090.1U Active CN207486194U (en) | 2017-09-29 | 2017-09-29 | A kind of piloted reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207486194U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662222A (en) * | 2018-06-13 | 2018-10-16 | 上海立新液压有限公司 | A kind of pilot-operated type threeway proportional pressure-reducing valve |
-
2017
- 2017-09-29 CN CN201721270090.1U patent/CN207486194U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662222A (en) * | 2018-06-13 | 2018-10-16 | 上海立新液压有限公司 | A kind of pilot-operated type threeway proportional pressure-reducing valve |
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