CN107883034A - A kind of dual spring pressure difference slide valve assembly - Google Patents
A kind of dual spring pressure difference slide valve assembly Download PDFInfo
- Publication number
- CN107883034A CN107883034A CN201710941762.5A CN201710941762A CN107883034A CN 107883034 A CN107883034 A CN 107883034A CN 201710941762 A CN201710941762 A CN 201710941762A CN 107883034 A CN107883034 A CN 107883034A
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- CN
- China
- Prior art keywords
- spring
- valve element
- valve
- pressure difference
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- F16K17/20—Excess-flow valves
Abstract
The present invention relates to a kind of dual spring pressure difference slide valve assembly, including housing, valve pocket, the first valve element, the second valve element, flowing hole, the first spring, second spring.The present invention can choose any one spring in the first spring and second spring, its rigidity and the change figureofmerit of required pressure difference is set to match, and the stiffness coefficient of another spring is matched with the frequency response of slide valve assembly, so as to solve the problems, such as variable quantity and frequency response index that Single spring pressure difference slide valve assembly can not meet pressure difference simultaneously.
Description
Technical field
The present invention relates to spool member field, more particularly to a kind of dual spring pressure difference slide valve assembly.
Background technology
The level pressure difference guiding valve of prior art is usually single-stage sliding valve modular construction, a valve pocket, a valve element, a bullet
Spring, as shown in Figure 1.Valve element both ends are moved by experiencing controlled liquid and reference fluid pressure respectively, until pressure differential and bullet
Spring force balances, and valve element stops movement.Valve element is in moving process, and the first control on valve element with second on bushing when controlling
Suitable circulating window is established jointly, is controlled liquid and is passed through the window pressure release, the final pressure for ensureing controlled liquid and reference fluid
Try hard to keep and hold more constant pressure difference.There are two important indicators in level pressure difference guiding valve control structure：1. valve element is in full working condition
During in diverse location, the pressure differential of liquid and reference fluid is controlled；2. the response frequency of level pressure difference guiding valve.Above-mentioned two indexs
It is related to the spring rate that valve element is matched, be specially：Spring rate is smaller, and pressure differential is more constant；Spring is firm
Degree coefficient is bigger, and the response frequency of guiding valve is higher.But there was only a spring in single-stage sliding valve structure, it may appear that can not meet simultaneously
Pressure difference is constant and the problem of frequency response index.
The content of the invention
The purpose of invention
Single-stage sliding valve modular construction is solved when for constant pressure difference control, it is impossible to while meet that pressure difference is constant and frequency response
The problem of index.
Technical scheme
The purpose of the present invention is realized by following measures.A kind of dual spring pressure difference slide valve assembly, wherein valve are provided
Set is fixed in housing and forms hollow cavity；First valve element is set in the lumen, and is slidably matched with valve pocket, and the first spring is set
Put between the first valve element and housing；
Second valve element is arranged in the first valve element, and is slidably matched with the first valve element, and second spring is arranged on the first valve element
Between the second valve element；
It is second spring chamber between first valve element and the second valve, is the first spring cavity between the first valve element and housing, first
Flowing hole is provided with valve element so that two spring cavitys are mutually linked up；
Second valve element side is second spring chamber, and opposite side is First pressure chamber；First spring cavity connects with second pressure chamber
It is logical；
Described housing, valve pocket and the first valve element is provided with oil-through-hole, and the oil-through-hole of housing, valve pocket and the first valve element is opened
Hole site is adapted to form logical oil circuit footpath, when between the first valve element and valve pocket and/or between the second valve element and the first valve element mutually
During slip, the radially superposed area between oil-through-hole can be changed, that is, change oil area.
Further, the first spring is different with the coefficient of elasticity of second spring.
Further, the oil-through-hole aperture of valve pocket is more than the oil-through-hole aperture of the first valve element.
Further, the pressure of the First pressure chamber is more than the pressure of second pressure chamber.
During work, the pressure of First pressure chamber is experienced in the first valve element upper end, and the pressure of the first spring cavity is experienced in lower end, and with
The pressure of first spring balances each other, and forms the relative displacement with valve pocket；The pressure of First pressure chamber is experienced in second valve element upper end, under
End spring cavity experiences the pressure of second spring chamber, and is balanced each other with the pressure of second spring, forms the relative position with the first valve element
Move.When mutually sliding between the first valve element and valve pocket and/or between the second valve element and the first valve element, can change between oil-through-hole
Axial overlap area, that is, change oil area.
Any one spring in the first spring and second spring is chosen, makes the change of its rigidity and required pressure difference
Figureofmerit matches；And the stiffness coefficient of another spring is set to be matched with the frequency response of slide valve assembly.
Technique effect
The two-stage type slide valve assembly of the invention for being designed to level pressure difference sliding valve structure there is two valve elements and two springs, two
The matching constant pressure difference index and frequency response index of the stiffness coefficient of individual spring independently.Solves single-stage level pressure difference guiding valve
The problem of constant pressure difference index and frequency response index can not be coordinated simultaneously.
Brief description of the drawings
Fig. 1 is the single-stage level pressure difference slide valve assembly structure of prior art；
Fig. 2 is the structural representation of the present invention；
Wherein：Housing 1, valve pocket 2, valve element 3, spring 4, the first valve element 5, the second valve element 6, flowing hole 7, the first spring 8,
Two springs 9.
Embodiment
The invention provides a kind of dual spring pressure difference slide valve assembly, including housing 1, valve pocket 2, the first valve element 5, the second valve element
6th, flowing hole 7, the first spring 8, second spring 9.Valve pocket is fixed on housing；Valve pocket is fixed in housing and formed in hollow
Chamber；First valve element is set in the lumen, and is slidably matched with valve pocket, and the first spring is arranged between the first valve element and housing；The
Two valve elements are arranged in the first valve element, and are slidably matched with the first valve element, and second spring is arranged on the first valve element and the second valve element
Between；It is second spring chamber between first valve element and the second valve, is the first spring cavity between the first valve element and housing, the first valve element
On be provided with flowing hole so that two spring cavitys are mutually linked up；Second valve element side is second spring chamber, and opposite side is first pressure
Chamber；Housing, valve pocket and the first valve element are provided with oil-through-hole, and the oil-through-hole position of opening of housing, valve pocket and the first valve element is mutually fitted
With logical oil circuit footpath is formed, when mutually being slided between the first valve element and valve pocket and/or between the second valve element and the first valve element, can change
It is flexible
During work, the pressure of First pressure chamber is experienced in the first valve element upper end, and the pressure of the first spring cavity is experienced in lower end, and with
The pressure of first spring balances each other, and forms the relative displacement with valve pocket；The pressure of First pressure chamber is experienced in second valve element upper end, under
End spring cavity experiences the pressure of second spring chamber, and is balanced each other with the pressure of second spring, forms the relative position with the first valve element
Move.When mutually sliding between the first valve element and valve pocket and/or between the second valve element and the first valve element, can change between oil-through-hole
Axial overlap area, that is, change oil area.
Any one spring in the first spring and second spring is chosen, makes the change of its rigidity and required pressure difference
Figureofmerit matches；And the stiffness coefficient of another spring is set to be matched with the frequency response of slide valve assembly.
Claims (4)
1. a kind of dual spring pressure difference slide valve assembly, including housing, valve pocket, the first valve element, the second valve element, flowing hole, the first spring
And second spring；Wherein valve pocket is fixed in housing and forms hollow cavity；First valve element is set in the lumen, and is slided with valve pocket
Dynamic to coordinate, the first spring is arranged between the first valve element and housing；
Second valve element is arranged in the first valve element, and is slidably matched with the first valve element, and second spring is arranged on the first valve element and
Between two valve elements；
It is second spring chamber between first valve element and the second valve, is the first spring cavity between the first valve element and housing, the first valve element
On be provided with flowing hole so that two spring cavitys are mutually linked up；
Second valve element side is second spring chamber, and opposite side is First pressure chamber；
Described housing, valve pocket and the first valve element is provided with oil-through-hole, and the oil-through-hole perforate position of housing, valve pocket and the first valve element
Put and be adapted to form logical oil circuit footpath, mutually slided when between the first valve element and valve pocket and/or between the second valve element and the first valve element
When, the radially superposed area between oil-through-hole can be changed, that is, change oil area.
A kind of 2. dual spring pressure difference slide valve assembly as claimed in claim 1, it is characterised in that：First spring and second spring
Coefficient of elasticity is different.
A kind of 3. dual spring pressure difference slide valve assembly as claimed in claim 1 or 2, it is characterised in that：The oil-through-hole aperture of valve pocket
More than the oil-through-hole aperture of the first valve element.
A kind of 4. dual spring pressure difference slide valve assembly as claimed in claim 1 or 2, it is characterised in that：The First pressure chamber
Pressure is more than the pressure of second pressure chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941762.5A CN107883034A (en) | 2017-10-11 | 2017-10-11 | A kind of dual spring pressure difference slide valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941762.5A CN107883034A (en) | 2017-10-11 | 2017-10-11 | A kind of dual spring pressure difference slide valve assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107883034A true CN107883034A (en) | 2018-04-06 |
Family
ID=61781319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710941762.5A Pending CN107883034A (en) | 2017-10-11 | 2017-10-11 | A kind of dual spring pressure difference slide valve assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107883034A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730643A (en) * | 2018-06-07 | 2018-11-02 | 金丽丽 | Compound ground-burying type pipe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5180730U (en) * | 1974-12-23 | 1976-06-26 | ||
| JPS5362930U (en) * | 1976-10-29 | 1978-05-27 | ||
| CN1039476A (en) * | 1985-09-06 | 1990-02-07 | 日立建机株式会社 | Flow control valve with pressure compensation |
-
2017
- 2017-10-11 CN CN201710941762.5A patent/CN107883034A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5180730U (en) * | 1974-12-23 | 1976-06-26 | ||
| JPS5362930U (en) * | 1976-10-29 | 1978-05-27 | ||
| CN1039476A (en) * | 1985-09-06 | 1990-02-07 | 日立建机株式会社 | Flow control valve with pressure compensation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730643A (en) * | 2018-06-07 | 2018-11-02 | 金丽丽 | Compound ground-burying type pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180406 |