CN2448974Y - Hydraulic controlled one-way throttle valve - Google Patents
Hydraulic controlled one-way throttle valve Download PDFInfo
- Publication number
- CN2448974Y CN2448974Y CN 00232366 CN00232366U CN2448974Y CN 2448974 Y CN2448974 Y CN 2448974Y CN 00232366 CN00232366 CN 00232366 CN 00232366 U CN00232366 U CN 00232366U CN 2448974 Y CN2448974 Y CN 2448974Y
- 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 - Lifetime
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Abstract
The utility model 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
The utility model relates to a kind of liquid control one-way throttle valve, is mainly used in and realizes the valve that the two-stage stroke speed is closed in the hydraulic speed regulation system.
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.
The purpose of this utility model is that a kind of hydraulic control of design, 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.
The technical solution of the utility model 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, valve port C, 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 valve port C the restriction B that leads to cavity of resorption is arranged, Returnning spring 7 is arranged between lower valve core and pedestal.
The utility model has the advantages that: 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.
Below accompanying drawing is described: accompanying drawing has provided structural representation of the present utility model.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 valve port, D are that valve port, A are that control mouth, B are restrictions.
Below in conjunction with description of drawings embodiment of the present utility model:
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: D is to C, normal open, and standard-sized sheet is for stator is opened fast.2, reverse: C is to 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: C is to 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), valve port C, 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 a control mouthful A to communicate with epicoele (9), from valve port C the 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 |
|---|---|---|---|
| CN 00232366 CN2448974Y (en) | 2000-11-09 | 2000-11-09 | Hydraulic controlled one-way throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00232366 CN2448974Y (en) | 2000-11-09 | 2000-11-09 | Hydraulic controlled one-way throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2448974Y true CN2448974Y (en) | 2001-09-19 |
Family
ID=33595019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00232366 Expired - Lifetime CN2448974Y (en) | 2000-11-09 | 2000-11-09 | Hydraulic controlled one-way throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2448974Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481952A (en) * | 2014-12-09 | 2015-04-01 | 中联重科股份有限公司 | One-way throttle valve and lift cylinder control system |
-
2000
- 2000-11-09 CN CN 00232366 patent/CN2448974Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481952A (en) * | 2014-12-09 | 2015-04-01 | 中联重科股份有限公司 | One-way throttle valve and lift cylinder control system |
| CN104481952B (en) * | 2014-12-09 | 2016-06-22 | 中联重科股份有限公司 | One-way throttle valve and lift cylinder control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20040825 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |