CN107725847B - A kind of Direct Action Type two-way pressure reducing valve using pressure feedback - Google Patents
A kind of Direct Action Type two-way pressure reducing valve using pressure feedback Download PDFInfo
- Publication number
- CN107725847B CN107725847B CN201711124339.2A CN201711124339A CN107725847B CN 107725847 B CN107725847 B CN 107725847B CN 201711124339 A CN201711124339 A CN 201711124339A CN 107725847 B CN107725847 B CN 107725847B
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- China
- Prior art keywords
- spool
- oil
- valve body
- pressure
- oil pocket
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
Abstract
A kind of Direct Action Type two-way pressure reducing valve using pressure feedback, including valve body and spool, spool and valve body are fitted close, and restriction and oil outlet are provided on valve body, and oil outlet and spool cooperation, oil liquid enter from restriction, enter executive component from oil outlet outflow；A1 oil pocket is formed at the top of spool between valve body, in A1 oil pocket, spring is set by pressure at the top of spool and is connected with the bottom end of expansion screw, mode is connected through a screw thread in the middle part of expansion screw and is connect with valve body, the top of expansion screw is stretched out outside valve body, and the distance of expansion screw stretching valve body is adjustable；A2 oil pocket is formed between spool bottom and valve body, oil outlet is connected to the hydraulic fluid port of the hydraulic fluid port of A1 oil pocket, A2 oil pocket, and the forced area of the spool at A1 oil pocket is less than the spool forced area at A2 oil pocket；The upper end that the pressure oil liquid of oil outlet on valve body is introduced to spool and valve body in the valve course of work, can significantly improve the response speed of valve as pressure feedback.
Description
Technical field
The invention belongs to two-way pressure reducing valve technical fields, and in particular to a kind of to be subtracted using the Direct Action Type two-way of pressure feedback
Pressure valve.
Background technique
Common two-way pressure reducing valve generally uses the structure type of pressure negative-feedback, and the pressure of valve outlet passes through feedback port meeting
The opening area of valve port is caused to reduce, to limit the rate of discharge of valve.In valve motion process, the response speed of valve is lower.
Summary of the invention
In order to overcome the disadvantages of the above prior art, the purpose of the present invention is to provide a kind of using the straight of pressure feedback
Dynamic formula two-way pressure reducing valve, can significantly improve the response speed of valve.
In order to achieve the above object, this invention takes the following technical solutions:
A kind of Direct Action Type two-way pressure reducing valve using pressure feedback, including valve body 3 and spool 4, spool 4 and valve body 3 are tight
Close fit together, is provided with restriction P and oil outlet A on valve body 3, oil outlet A and spool 4 cooperate, oil liquid from restriction P into
Enter, enters executive component from oil outlet A outflow；Form A1 oil pocket between the top of spool 4 and valve body 3, in A1 oil pocket, spool 4 is pushed up
Portion is connected with the bottom end of pressure setting spring 2, and the top of pressure setting spring 2 is connected with the bottom end of expansion screw 1, expansion screw
1 middle part is connected through a screw thread mode and connect with valve body 3, and the top of expansion screw 1 is stretched out outside valve body 3, and expansion screw 1 is stretched
The distance of valve body 3 is adjustable out；A2 oil pocket, hydraulic fluid port, the A2 oil pocket of oil outlet A and A1 oil pocket are formed between 4 bottom of spool and valve body 3
Hydraulic fluid port connection, the forced area of the spool 4 at A1 oil pocket is less than 4 forced area of spool at A2 oil pocket.
The mobile opening area for determining oil outlet A of the axial direction of the spool 4.
The invention has the benefit that the pressure oil liquid of oil outlet A on valve body 3 is introduced the upper of spool 4 and valve body 3
End, as pressure feedback, in the valve course of work, can significantly improve the response speed of valve.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawing.
Referring to Fig.1, a kind of Direct Action Type two-way pressure reducing valve using pressure feedback, including valve body 3 and spool 4, spool 4 with
Valve body 3 is snuggly mated to together, and spool 4 can be free to slide along axis in valve body 3, be provided on valve body 3 restriction P with it is fuel-displaced
Mouth A, oil outlet A and spool 4 cooperate, and oil liquid enters from restriction P, enter executive component from oil outlet A outflow；4 top of spool
A1 oil pocket is formed between valve body 3, in A1 oil pocket, the bottom end of 4 top of spool and pressure setting spring 2 is connected, pressure setting bullet
The top of spring 2 is connected with the bottom end of expansion screw 1, and the middle part of expansion screw 1 is connected through a screw thread mode and connect with valve body 3, can
The top of screw 1 is adjusted to stretch out outside valve body 3, and the distance of the stretching valve body 3 of expansion screw 1 is adjustable；4 bottom of spool and valve body 3 it
Between form A2 oil pocket, oil outlet A is connected to the hydraulic fluid port of the hydraulic fluid port of A1 oil pocket, A2 oil pocket, the forced area of the spool 4 at A1 oil pocket
Less than 4 forced area of spool at A2 oil pocket, the upper end of spool 4 is introduced using the pressure at oil outlet A as positive feedback, as negative
Feedback introduces the lower end of spool 4.
The mobile opening area for determining oil outlet A of the axial direction of the spool 4.
The operation principle of the present invention is that: at oil outlet A, the A1 oil pocket and A2 oil that divide two-way oil liquid to respectively enter valve body 3
Chamber, wherein A1 oil pocket plays pressure feedback, and A2 oil pocket plays the role of pressure negative-feedback；Spool 4 at A1 oil pocket
Forced area is less than 4 forced area of spool at A2 oil pocket.Oil pressure at oil outlet A is respectively acting on the two active areas
On, when the hydraulic pressure that spool 4 is subject to is less than the pressure set points of pressure setting spring 2, spool 4 is moved up, oil outlet A
The flow area at place reduces, to guarantee that the pressure at oil outlet A is the setup pressure value that pressure sets spring 2.
Claims (1)
1. a kind of Direct Action Type two-way pressure reducing valve using pressure feedback, including valve body (3) and spool (4), spool (4) and valve body
(3) it is snuggly mated to together, restriction (P) and oil outlet (A), oil outlet (A) and spool (4) cooperation, oil is provided on valve body (3)
Liquid enters from restriction (P), enters executive component from oil outlet (A) outflow, it is characterised in that: spool (4) top and valve body (3)
Between form A1 oil pocket, in A1 oil pocket, at the top of spool (4) and the bottom end of pressure setting spring (2) is connected, pressure setting spring
(2) top is connected with the bottom end of expansion screw (1), and mode and valve body (3) are connected through a screw thread in the middle part of expansion screw (1) even
It connects, valve body (3) are stretched out outside in the top of expansion screw (1), and the distance of expansion screw (1) stretching valve body (3) is adjustable；Spool
(4) A2 oil pocket is formed between bottom and valve body (3), oil outlet (A) is connected to the hydraulic fluid port of the hydraulic fluid port of A1 oil pocket, A2 oil pocket, A1 oil
The forced area of spool (4) at chamber is less than spool (4) forced area at A2 oil pocket；The axial direction of the spool (4)
The mobile opening area for determining oil outlet (A)；
At oil outlet (A), the A1 oil pocket and A2 oil pocket for dividing two-way oil liquid to respectively enter valve body (3), wherein A1 oil pocket plays pressure
The effect of power positive feedback, A2 oil pocket play the role of pressure negative-feedback；The forced area of spool (4) at A1 oil pocket is less than A2 oil
Spool (4) forced area at chamber；Oil pressure at oil outlet A is respectively acting on the two active areas, when spool (4) by
Hydraulic pressure be less than pressure setting spring (2) pressure set points when, spool (4) moves up, the through-flow face at oil outlet A
Product reduces, to guarantee that the pressure at oil outlet A is the setup pressure value that pressure sets spring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711124339.2A CN107725847B (en) | 2017-11-14 | 2017-11-14 | A kind of Direct Action Type two-way pressure reducing valve using pressure feedback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711124339.2A CN107725847B (en) | 2017-11-14 | 2017-11-14 | A kind of Direct Action Type two-way pressure reducing valve using pressure feedback |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107725847A CN107725847A (en) | 2018-02-23 |
| CN107725847B true CN107725847B (en) | 2019-05-21 |
Family
ID=61215924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711124339.2A Active CN107725847B (en) | 2017-11-14 | 2017-11-14 | A kind of Direct Action Type two-way pressure reducing valve using pressure feedback |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107725847B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110953210A (en) * | 2020-01-15 | 2020-04-03 | 陕西理工大学 | Direct-acting pressure positive feedback two-way proportional pressure reducing valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS571874A (en) * | 1980-06-05 | 1982-01-07 | Kyokuto Kaihatsu Kogyo Co Ltd | Direct-acting relief valve |
| CN103470562A (en) * | 2013-09-06 | 2013-12-25 | 鞍钢股份有限公司 | High-frequency counterbalance valve and counterbalancing method thereof |
| CN104632742A (en) * | 2014-12-18 | 2015-05-20 | 高雅 | Direct action type reducing valve |
| CN105179769A (en) * | 2015-09-17 | 2015-12-23 | 付明 | Differential pressure plunger automatic pressure regulating valve |
-
2017
- 2017-11-14 CN CN201711124339.2A patent/CN107725847B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS571874A (en) * | 1980-06-05 | 1982-01-07 | Kyokuto Kaihatsu Kogyo Co Ltd | Direct-acting relief valve |
| CN103470562A (en) * | 2013-09-06 | 2013-12-25 | 鞍钢股份有限公司 | High-frequency counterbalance valve and counterbalancing method thereof |
| CN104632742A (en) * | 2014-12-18 | 2015-05-20 | 高雅 | Direct action type reducing valve |
| CN105179769A (en) * | 2015-09-17 | 2015-12-23 | 付明 | Differential pressure plunger automatic pressure regulating valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107725847A (en) | 2018-02-23 |
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