CN207406862U - A kind of piston piloted reducer - Google Patents
A kind of piston piloted reducer Download PDFInfo
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- CN207406862U CN207406862U CN201721357556.1U CN201721357556U CN207406862U CN 207406862 U CN207406862 U CN 207406862U CN 201721357556 U CN201721357556 U CN 201721357556U CN 207406862 U CN207406862 U CN 207406862U
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- pressure
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Abstract
The utility model discloses a kind of piston piloted reducers, it includes the valve body with inlet and liquid outlet, valve body includes valve deck, adjustment bolt, spring, piston rod, piston, valve deck is connected with valve seal, seal is provided in valve body, piston moves down into bottom and sealing is contacted with seal, seal upper end connects for admission chamber with inlet, lower end is sap cavity to connect with liquid outlet, the middle lower end of piston is provided with the abutment surface of annular and the lower pressure surface of annular, the suffered pressure of abutment surface is more than pressure suffered by lower pressure surface, cylinder chamber is divided into epicoele and cavity of resorption by piston, epicoele is connected by passage I with liquid outlet, cavity of resorption is connected with inlet, compared to existing reducing valve body, it is reasonable in design, having stable behavior is reliable, pressure relief ranges are wide.
Description
Technical field
The utility model is related to fluid-duct-system valve bodies, are specially a kind of piston piloted reducer.
Background technology
Pressure reducing valve is to adjust the flow of medium using the aperture of the in vivo opening and closing element of control valve, by the pressure drop of medium
It is low, while the aperture of the effect adjusting opening and closing element by downstream pressure, downstream pressure is made to keep within the specific limits, in inlet-pressure
In the case of power is continually changing, valve body equipment of the outlet pressure stabilization in the range of setting is kept.From hydromechanical viewpoint
It sees, pressure reducing valve is the restricting element that a local resistance can change, i.e., by changing orifice size, makes the dynamic of flow velocity and fluid
It can change, the different pressure losses be caused, so as to achieve the purpose that decompression；Pressure reducing valve general at present, generally comprises spring, work
Cock body, outlet pressure judge that outlet hydraulic pressure is generally dependent on inlet pressure and bullet plus spring force compared with inlet pressure
The value of spring force, the water outlet hydraulic pressure after decompression is unstable, and piston is frequently in fluctuation status, especially when hydraulic pressure is excessive,
Piston component, flap etc. easily damage, and cause the reduced service life of valve body, and pressure relief ranges are narrow, and most pressure reducing valve is maximum
Pressure-resistant 5MPa, pressure regulation spectrum are 0.5MPa ~ 5MPa.
The content of the invention
In order to effectively solve the above problems, the utility model has provided a kind of piston piloted reducer, and structure is set
Meter is reasonable, having stable behavior is reliable, and pressure relief ranges are wide.
For achieving the above object, technical solution adopted in the utility model is：
A kind of piston piloted reducer, it includes the valve body with inlet and liquid outlet, and valve body includes valve deck, adjustment
Bolt, spring, piston rod, piston, valve deck are connected with valve seal, and adjustment bolt is arranged on valve deck, adjustment bolt inner end with
Spring connects, and to adjust spring force, the other end of spring is connected with piston, to the thrust that piston is downward, valve deck and valve body
Cylinder chamber is formed, piston is provided with seal in cylinder intracavitary upper and lower displacement, cylinder intracavitary, and piston moves down into bottom and contacted with seal
Sealing, seal upper end is that admission chamber is connected with inlet, lower end is sap cavity to connect with liquid outlet, and it is close that piston is provided with annular
Sealing contacts sealing with seal, and the middle lower end of piston is provided with the abutment surface of annular and the lower pressure surface of annular, the institute of abutment surface
It being pressurized powerful in pressure suffered by lower pressure surface, cylinder chamber is divided into epicoele and cavity of resorption by piston, and epicoele is connected by passage I with liquid outlet,
Cavity of resorption is connected with inlet.
Further, piston is provided with guide rod, and valve body lower end is provided with guide groove, and guide rod is vertical bar,
Lower end is embedded in guide groove, and slides up and down and be connected with guide groove, and the guide rod is provided with passage II, on passage II opening and
Go out sap cavity connection, the under shed of passage II is connected with guide groove, and when guide rod is displaced to bottom, the upper opening of passage II is in
Outside guide groove.
The adjustment bolt is provided with safety cap, and the adjustment bolt lower end is connected with spring base, spring base and bullet
The upper end of spring is fixedly connected, and spring is nested with to be held on the piston rod, and piston rod is fixedly connected with the piston,
The pipe decompression valve pressure relief ranges of the utility model can depressurize the water inlet pressure in 6MPa, adjustment side
Method：It rotates clockwise decompression upper end adjustment bolt for back pressure to reduce, rotates to be back pressure increase counterclockwise, adjust every time
Upper terminal bolt is not greater than 180 degree, and observation water outlet pressure is strong, and after inlet feed liquor, influent pressure overcomes acting force of the spring to promote piston
It moves up, opens valve body and lead to liquid, liquid outlet hydraulic pressure forms resistance with epicoele connection together with acting force of the spring.
The beneficial effects of the utility model are：
Compared to existing reducing valve body, structure design is more reasonable, and having stable behavior is reliable, and pressure relief ranges are wider, can be effective
One stable step-down value of offer.
Description of the drawings
Fig. 1 is the utility model embodiment structure diagram.
Specific embodiment
A kind of piston piloted reducer as shown in drawings, it includes the valve body with inlet 1 and liquid outlet 2, valve
Body includes valve deck 3, adjustment bolt 4, spring 5, piston rod 6, piston 7, and valve deck 3 is connected with valve seal, and adjustment bolt 4 is arranged on
On valve deck 3,4 inner end of adjustment bolt is connected with spring 5, and to adjust spring force, the other end of spring 5 is connected with piston 7, gives
The downward thrust of piston 7, valve deck 1 and valve body form cylinder chamber, and piston 7 is provided with seal in cylinder intracavitary upper and lower displacement, cylinder intracavitary
8, piston 7 moves down into bottom and sealing is contacted with seal 8, and 8 upper end of seal is that admission chamber is connected with inlet 1, lower end is
Go out sap cavity 9 to connect with liquid outlet 2, piston 7 is provided with lip ring and contacts sealing with seal 8, and the middle lower end of piston 7 is set
There are the abutment surface 10 of annular and the lower pressure surface 11 of annular, the suffered pressure of abutment surface 10 is more than pressure, piston 7 suffered by lower pressure surface 11
Cylinder chamber is divided into epicoele 12 and cavity of resorption, epicoele 12 is connected by passage I 13 with liquid outlet 2, and cavity of resorption is connected with inlet 1.
Further, 7 lower end of piston is provided with guide rod 14, and valve body lower end is provided with guide groove 15, and guide rod 14 is perpendicular
Straight-bar, lower end insertion guide groove 15, and slide up and down and be connected with guide groove 15, the guide rod 14 is provided with passage II
16, it is open on passage II 16 and is connected with going out sap cavity 9, the under shed of passage II 16 is connected with guide groove 15, and guide rod 14 is displaced to
During bottom, the upper opening of passage II 16 is in outside guide groove 15.
The adjustment bolt 4 is provided with safety cap 17, and 4 lower end of adjustment bolt is connected with spring base 18, spring
Seat 18 is fixedly connected with the upper end of spring 5, and spring 5 is nested in 6 upper end of piston rod, and piston rod 6 is fixedly connected with piston 7.
Adjustment bolt must not be screwed out completely under any circumstance；Safety cap must not be taken away.
Arrow direction is water outlet direction, and afterbody is water inlet direction.Water inlet caliber DN150, water outlet caliber DN150.
The import hydraulic pressure of the embodiment can increase to 6MPa, can not only provide a stable water outlet hydraulic pressure, step-down value
Also can accurately be adjusted as needed.
The above is only the preferred embodiment of the utility model, it is noted that for the ordinary skill of technical field
For personnel, on the premise of the utility model principle is not departed from, several improvement can also be made, wound is not being paid in these improvement
The scope of protection of the utility model is also should be regarded as under the premise of the property made work.
Claims (3)
1. a kind of piston piloted reducer, it includes the valve body with inlet and liquid outlet, and valve body includes valve deck, adjustment spiral shell
Bolt, spring, piston rod, piston, valve deck are connected with valve seal, and adjustment bolt is arranged on valve deck, adjustment bolt inner end and bullet
Spring connects, and to adjust spring force, the other end of spring is connected with piston, to the thrust that piston is downward, valve deck and valve body structure
Into cylinder chamber, for piston in cylinder intracavitary upper and lower displacement, cylinder intracavitary is provided with seal, piston move down into bottom contacted with seal it is close
Envelope, seal upper end is that admission chamber is connected with inlet, lower end is sap cavity to connect with liquid outlet, and piston is provided with ring packing
Part contacts sealing with seal, it is characterized in that：The middle lower end of piston is provided with the abutment surface of annular and the lower pressure surface of annular, above pushes away
The suffered pressure in face is more than pressure suffered by lower pressure surface, and cylinder chamber is divided into epicoele and cavity of resorption by piston, and epicoele passes through passage I and liquid outlet
Connection, cavity of resorption are connected with inlet.
2. piston piloted reducer according to claim 1, it is characterized in that：Piston is provided with guide rod, valve body
Lower end is provided with guide groove, and guide rod is vertical bar, and lower end is embedded in guide groove, and slides up and down and be connected with guide groove, described
Guide rod be provided with passage II, be open on passage II and connected with going out sap cavity, the under shed of passage II is connected with guide groove, be oriented to
When bar is displaced to bottom, the upper opening of passage II is in outside guide groove.
3. piston piloted reducer according to claim 1, it is characterized in that：The adjustment bolt is provided with safety
Cap, the adjustment bolt lower end are connected with spring base, and spring base is fixedly connected with the upper end of spring, and spring is nested in piston rod
Upper end, piston rod are fixedly connected with the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721357556.1U CN207406862U (en) | 2017-10-20 | 2017-10-20 | A kind of piston piloted reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721357556.1U CN207406862U (en) | 2017-10-20 | 2017-10-20 | A kind of piston piloted reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207406862U true CN207406862U (en) | 2018-05-25 |
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ID=62320431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721357556.1U Active CN207406862U (en) | 2017-10-20 | 2017-10-20 | A kind of piston piloted reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207406862U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654707A (en) * | 2017-10-20 | 2018-02-02 | 泰安大道软启动机械有限公司 | A kind of piston piloted reducer |
-
2017
- 2017-10-20 CN CN201721357556.1U patent/CN207406862U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654707A (en) * | 2017-10-20 | 2018-02-02 | 泰安大道软启动机械有限公司 | A kind of piston piloted reducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 271000 south section of Longteng Road, high tech Zone, Tai'an City, Shandong Province (Longji science and Technology Industrial Park) Patentee after: Avenue Machinery Equipment Co.,Ltd. Address before: 271000 Youth Development Zone, Shandong, Tai'an Patentee before: DADAO SOFT START MACHINERY CO.,LTD. |
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| CP03 | Change of name, title or address |