CN1163674C - Liquid control one-way throttle valve - Google Patents
Liquid control one-way throttle valve Download PDFInfo
- Publication number
- CN1163674C CN1163674C CNB001311344A CN00131134A CN1163674C CN 1163674 C CN1163674 C CN 1163674C CN B001311344 A CNB001311344 A CN B001311344A CN 00131134 A CN00131134 A CN 00131134A CN 1163674 C CN1163674 C CN 1163674C
- Authority
- CN
- China
- Prior art keywords
- valve
- valve core
- port
- way throttle
- cavity
- 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.)
- Expired - Fee Related
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- Fluid-Pressure Circuits (AREA)
- Check Valves (AREA)
Abstract
The present invention provides a hydraulic controlled one-way throttle valve, comprising a valve body 5, an upper cover 2, a base 8, an adjusting spindle 3, an upper valve core 4, a lower valve core 6, a valve port C, a valve port D, an upper and lower valve core coaxial line, wherein an upper cavity 9 is arranged between the upper valve core and the upper cover, and a lower cavity is arranged between the lower valve core and the base; the upper end of the valve body is provided with a control port A to be communicated with the upper cavity 9, a throttle hole B is extended from the valve port C to open onto the lower cavity, and a return spring 7 is arranged between the lower valve core and the base.
Description
Technical field
The present invention relates to a kind of liquid control one-way throttle valve, be mainly used in and realize the valve that the two-stage stroke speed is closed in the hydraulic speed regulation system.
Background technique
At present, the hydraulic speed regulation system shutoff device adopts traditional one-way throttle valve and Pilot operated check valve to combine to realize speed to cut out for two sections.Two valves all can be realized unidirectional standard-sized sheet, other direction completely open and close, or with single speed throttling, but and can not realize both standard-sized sheets of other direction, but throttling again.Adopt traditional one-way throttle valve and Pilot operated check valve to combine and realize two sections closing structure complexity of speed, bulky.Prior art does not also have liquid collecting control, unidirectional, valve that three kinds of functions of throttling are one.
Summary of the invention
The objective of the invention is to design a kind of hydraulic control, unidirectional, three kinds of functions of throttling are the liquid control one-way throttle valve of one, comprehensive one-way throttle valve and Pilot operated check valve function and advantage.
Technological scheme of the present invention is this liquid control one-way throttle valve, comprise that valve body 5, loam cake 2, pedestal 8, adjustment mandrel 3, upper valve core 4, lower valve core 6, the first valve port C, the second valve port D, last lower valve core coaxial line place valve body, have between upper valve core and the loam cake cavity of resorption 10 is arranged between epicoele 9, lower valve core and the pedestal, its valve body upper end has a control mouthful A to communicate with epicoele 9, from the first valve port C restriction B that leads to cavity of resorption is arranged, Returnning spring 7 is arranged between lower valve core and pedestal.
Advantage of the present invention is: when this valve is used for the water turbine governing system, replaced sectioning valve (pilot valve+throttle valve) and one-way valve in the former shutdown system.This valve is not only simple in structure than former sectioning valve, and size is little, and has cancelled independently one-way valve in system, becomes two valves into a valve, has reduced piping erection, has reduced cost, has also reduced rate of fault simultaneously, and performance is more reliable and more stable.Be used for other speed control system, an also available valve replaces one-way throttle valve and Pilot operated check valve to reach above-mentioned effect, realizes that hydraulic control, unidirectional, three kinds of functions of throttling are one.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Below in conjunction with the description of drawings embodiments of the invention:
1 is to adjust screw among the figure, the 2nd, and loam cake, the 3rd is adjusted mandrel, the 4th, and upper valve core, the 5th, valve body, the 6th, lower valve core, the 7th, Returnning spring, the 8th, pedestal, the 9th, epicoele, the 10th, cavity of resorption, C are that first valve port, D are that second valve port, A are that control mouth, B are restrictions.
This valve arrangement is that two spools 4,6 up and down are loaded in the valve body 5 coaxially, therefore do not increase the valve body overall size, its lower valve core about in the of 6 two ends be subjected to the pressure and the spring force of valve port pressure oil, the pressure that upper valve core 4 is come by valve port pressure oil and control mouthful A, and bolt 1 is arranged and adjust the stroke that the upper and lower spool of mandrel 3 adjustings makes progress, to regulate the aperture of the restriction that lower valve core 6 and valve body restriction B form, i.e. the can regulate speed of turn-offing slowly.According to this valve principle, as long as spool and spring size coupling are rationally, upper and lower valve core diameter can select identical or different, all can realize above-mentioned three kinds of operating modes.
This valve can be realized three kinds of operating modes:
1, forward: the second valve port D is to the first valve port C, normal open, and standard-sized sheet is for stator is opened fast.
2, reverse: the first valve port C is to the second valve port D, and when a control mouthful A came pressure oil, spool 4,6 was downward, and standard-sized sheet is the stator quick closedown.
3, reverse: the first valve port C is to the second valve port D, and when the A off-load, spool 4,6 makes progress, and throttling is for stator is closed at a slow speed.
Claims (1)
1, a kind of liquid control one-way throttle valve, comprise valve body (5), loam cake (2), pedestal (8), adjustment mandrel (3), upper valve core (4), lower valve core (6), first valve port (C), second valve port (D), go up the lower valve core coaxial line, have between upper valve core and the loam cake cavity of resorption (10) is arranged between epicoele (9), lower valve core and the pedestal, it is characterized in that the valve body upper end has control mouthful (A) to communicate with epicoele (9), from first valve port (C) restriction (B) that leads to cavity of resorption is arranged, Returnning spring (7) is arranged between lower valve core and pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001311344A CN1163674C (en) | 2000-11-09 | 2000-11-09 | Liquid control one-way throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001311344A CN1163674C (en) | 2000-11-09 | 2000-11-09 | Liquid control one-way throttle valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1352354A CN1352354A (en) | 2002-06-05 |
| CN1163674C true CN1163674C (en) | 2004-08-25 |
Family
ID=4594490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001311344A Expired - Fee Related CN1163674C (en) | 2000-11-09 | 2000-11-09 | Liquid control one-way throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1163674C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899986A (en) * | 2010-07-30 | 2010-12-01 | 北京天地玛珂电液控制系统有限公司 | A hydraulically controlled one-way valve |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777650B (en) * | 2011-05-13 | 2013-12-25 | 中国北车集团大同电力机车有限责任公司 | One-way throttling valve |
-
2000
- 2000-11-09 CN CNB001311344A patent/CN1163674C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899986A (en) * | 2010-07-30 | 2010-12-01 | 北京天地玛珂电液控制系统有限公司 | A hydraulically controlled one-way valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1352354A (en) | 2002-06-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040825 Termination date: 20091209 |