CN2218859Y - Column throttling valve - Google Patents
Column throttling valve Download PDFInfo
- Publication number
- CN2218859Y CN2218859Y CN 95211168 CN95211168U CN2218859Y CN 2218859 Y CN2218859 Y CN 2218859Y CN 95211168 CN95211168 CN 95211168 CN 95211168 U CN95211168 U CN 95211168U CN 2218859 Y CN2218859 Y CN 2218859Y
- Authority
- CN
- China
- Prior art keywords
- throttling
- spool
- valve body
- circular cylinder
- hollow circular
- 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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- Sliding Valves (AREA)
Abstract
The utility model relates to a column throttling valve, comprising a valve body 1, a valve core 2 and a valve cover 6. The valve core 2 connects with a handle 7 by a lead screw 4. The end part of the valve core 2 is a hollow circular cylinder 10. A throttling window 9 is opened on the hollow circular cylinder 10. A throttling sealing set comprises the hollow circular cylinder 10, the throttling window 9 of the hollow circular cylinder and a liquor inlet which is on the valve body 8. The flow quantity can be changed through regulating the axial position of the valve core 2 by the handle 7 and the lead screw 4. When the valve core is at the state of full close, the leaking fluid which enters into the valve body 1 from the matching surface clearance gap of the liquor inlet 8 and the hollow circular cylinder 10 doesn't leak out from the valve body because of the sealing of an O-shaped sealing ring 3 and an O-shaped sealing ring 5. The utility model has the advantages of quick throttling of large flow quantity, smooth throttling of small flow quantity and steady pressure and flow quantity of fluid.
Description
The utility model relates to the throttle valve in the fluid delivery system, specifically is a kind of cylindricality throttle valve.
Mainly there are three problems in general throttle valve at present: 1. throttling valve core is a cone, be difficult for carrying out trace and regulate, and during low discharge throttling control, the flow shakiness, pressure surge is big; 2. the sealing pair of throttle valve is the rigid seal between spool and the valve seat, and sealing surface is easily destroyed to cause leakage; 3. under high-pressure situations, during opening/shutting valve, because the impact force of fluid is prone to accidents.
The purpose of this utility model is the problems referred to above that exist at present throttle valve, provide a kind of when big flow throttling rapid, small flow time levelling is steady, sealing is reliable, the life-span is long, and the cylindricality throttle valve of the impact force of fluid generation can absorb the switching valve time.
The utility model is achieved in that the cylindricality throttle valve comprises valve body, spool, handle.Spool is arranged in valve body, and the leading screw that has handle is meshed with the internal thread of spool, and the drive spool moves axially along valve body.The end of spool is a hollow circular cylinder.Have the throttling window on the hollow circular cylinder.The hollow circular cylinder that the cylindrical liquid entering hole of valve body and spool end have the throttling window constitutes the throttling sealing pair.The O RunddichtringO is housed on the periphery of spool right-hand member.
Throttling window on the hollow circuit cylinder face of spool end is the triangle throttle orifice.
During work, fluid flows into from the liquid entering hole of valve body, behind the oil circuit in throttling window on spool and valve body, the spool, from the liquid outlet outflow of valve body.Handle with sleeve is adjusted spool by screw mandrel and just can be changed relative position by valve body liquid entering hole and spool hollow circular cylinder in the axial position of valve body, thereby changes the size of the throttling window of throttling sealing pair.When spool was moved to the left full closing state, throttling this moment window was by the cylndrical surface shutoff, and the small volume of fluid of leaking from the gap is sealed by two O RunddichtringOs, can not spill valve body.
The utility model has the advantages that: during big flow throttling rapid, small flow time levelling is sliding, the pressure of fluid and flow all can held stationaries, constant.
Accompanying drawing is a tectonic maps of the present utility model.
The utility model is described in further detail below in conjunction with accompanying drawing: the cylindricality throttle valve comprises valve body 1, spool 2, leading screw 4, handle 7.Spool 2 passes valve gap 6 and links to each other with handle 7 by leading screw 4.The termination of spool 2 is a hollow circular cylinder 10.Have triangle throttling window 9 on the hollow circular cylinder 10.Have the hollow circular cylinder 10 of triangle throttling window 9 and the liquid entering hole cylndrical surface formation throttling sealing pair of valve body 1.Liquid stream enters valve body 1 from the throttling window 9 of liquid entering hole 8 on hollow circular cylinder 10 of valve body 1, and the oil circuit in the valve body 1 of flowing through then, the spool 2 flows out from the liquid outlet 11 on the valve body 2.When spool 2 moves to left to full closing state, the cylndrical surface of liquid entering hole 8 is with throttling window 9 shutoff on the hollow circular cylinder 10, the fluid that is leaked by matching gap is sealed by O RunddichtringO 3 on the spool 2 and O RunddichtringO 5 on a small quantity, has avoided liquid to spill from valve body 1.
Claims (2)
1, a kind of cylindricality throttle valve comprises valve body, spool, handle; Spool is arranged in valve body; It is characterized in that having the leading screw of handle is meshed with internal thread in the spool; The end of spool is the cylindrical body of hollow; Have the throttling window on the hollow circular cylinder; The hollow circular cylinder that the cylindrical liquid entering hole of valve body and spool end have the throttling window constitutes the throttling sealing pair; The O RunddichtringO is housed on the periphery of spool right-hand member.
2, cylindricality throttle valve according to claim 1 is characterized in that the throttling window on the hollow circuit cylinder face of spool end is the triangle throttle orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95211168 CN2218859Y (en) | 1995-06-06 | 1995-06-06 | Column throttling valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95211168 CN2218859Y (en) | 1995-06-06 | 1995-06-06 | Column throttling valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2218859Y true CN2218859Y (en) | 1996-01-31 |
Family
ID=33861702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95211168 Expired - Fee Related CN2218859Y (en) | 1995-06-06 | 1995-06-06 | Column throttling valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2218859Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062147A (en) * | 2013-01-24 | 2013-04-24 | 中联重科股份有限公司 | Hydraulic-control throttling valve, balance valve, engineering machine and hydraulic system for controlling winch |
| CN103075285A (en) * | 2013-02-05 | 2013-05-01 | 李正富 | High pressure common rail fuel metering valve |
| CN103573749A (en) * | 2013-11-04 | 2014-02-12 | 湖南特力液压有限公司 | Hydraulic buffer cylinder |
-
1995
- 1995-06-06 CN CN 95211168 patent/CN2218859Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062147A (en) * | 2013-01-24 | 2013-04-24 | 中联重科股份有限公司 | Hydraulic-control throttling valve, balance valve, engineering machine and hydraulic system for controlling winch |
| CN103062147B (en) * | 2013-01-24 | 2015-06-03 | 中联重科股份有限公司 | Hydraulic-control throttling valve, balance valve, engineering machine and hydraulic system for controlling winch |
| CN103075285A (en) * | 2013-02-05 | 2013-05-01 | 李正富 | High pressure common rail fuel metering valve |
| CN103573749A (en) * | 2013-11-04 | 2014-02-12 | 湖南特力液压有限公司 | Hydraulic buffer cylinder |
| CN103573749B (en) * | 2013-11-04 | 2016-04-06 | 湖南特力液压有限公司 | Buffering hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |