CN201547065U - Soft start valve - Google Patents
Soft start valve Download PDFInfo
- Publication number
- CN201547065U CN201547065U CN2009202442044U CN200920244204U CN201547065U CN 201547065 U CN201547065 U CN 201547065U CN 2009202442044 U CN2009202442044 U CN 2009202442044U CN 200920244204 U CN200920244204 U CN 200920244204U CN 201547065 U CN201547065 U CN 201547065U
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- China
- Prior art keywords
- soft start
- main valve
- valve plug
- valve
- soft
- 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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Abstract
A soft start valve belongs to a pressure control valve and solves the problem that when the pressure control valve in prior art starts, the pump motor generates overload current due to the high pressure effect of the oil line so that the service life of the pump motor transducer is reduced accordingly. The technical proposal for solving the problem includes that: a valve body inner cavity is divided by a soft start valve bush (5) and a soft start main valve core (3) into a main valve core front cavity (10), a main valve core rear cavity (9) and a soft start valve bush rear cavity (8), main valve core side holes (12) are evenly distributed on the soft start main valve core (3) in radial direction, a middle throttle hole (11) is axially arranged on the soft start main valve core (3), and a fixed throttle hole (7) is axially arranged on a soft start valve bush (4). The soft start valve can realize soft starting, accordingly protects pump motor against the impact of overload current and ensures the pump motor to operate safely.
Description
Technical field
The utility model belongs to the valve class, is specifically related to a kind of soft starting valve, and major function is to guarantee the Hydrauservo System smooth starting.
Background technique
In Hydrauservo System,, in system, can be provided with usually and guarantee security of system, the control unit of effectively working, as relief valve, pressure maintaining valve and back pressure valve etc. in order to guarantee the safe operation of dynamical element and executive component; They are as the oil circuit pressure controlled valve, and its effect mainly is to prevent system overload, and the working pressure of the safety of protection oil pump and oil-way system and maintenance oil-way system is constant.But for existing pressure controlled valve, when pump motor starts, because spool is closed, the breakout pressure of pump promptly is the elevated pressures that pressure controlled valve is set up, so resisting moment suffered during electric motor starting is very big, damages frequency variator easily, reduce pump motor frequency variator working life.
Summary of the invention
When starting in order to reduce pressure controlled valve; the resisting moment that pump motor is suffered; its change curve is tended towards stability; prolong pump, motor, frequency variator working life; the utility model provides a kind of soft starting valve; this valve has soft start function, thereby the protection pump motor avoids starting the impact of overcurrent, guarantees its safe operation.
The technological scheme that solves the problems of the technologies described above employing is: soft starting valve is by valve body, start valve pocket, the soft start main valve plug, the main valve plug spring, the soft start valve pocket is formed, valve body is provided with import and outlet, valve body is fixedlyed connected with the startup valve pocket, the soft start valve pocket is slidingly connected with the startup valve pocket, soft start main valve plug and soft start valve pocket are slidingly connected, screen element is fixedlyed connected with the soft start main valve plug, soft start valve pocket and soft start main valve plug are divided into the main valve plug ante-chamber with body cavity, main valve plug back cavity and soft start valve pocket back cavity, the soft start main valve plug axially is provided with middle throttle orifice, be communicated with main valve plug ante-chamber and main valve plug back cavity, the soft start main valve plug directly upwards is provided with the main valve plug side opening, the soft starting valve cover axially is provided with fixed orifice, be communicated with main valve plug back cavity and soft start valve pocket back cavity, the main valve plug spring is installed in the soft starting valve cover cavity.When import has oil pressure, the back cavity oil pressure of soft start main valve plug is zero, so the soft start main valve plug moves after rapid having overcome the main valve plug spring resistance after, the soft start main valve plug separates with the startup valve pocket, system unloaded, after in the process of moving, the main valve plug side opening is communicated with outlet, hydraulic oil flows back to oil cylinder from side opening through outlet, thereby plays the effect of auxiliary off-load.When the soft start main valve plug moves to when soft starting valve cover contact, the main valve plug side opening is by complete closed, and the main valve plug back cavity no longer is communicated with exporting.Import fluid enters into the main valve plug back cavity through the middle throttle orifice of soft start main valve plug, and the fixed orifice through soft start valve pocket rear portion enters into the big back cavity of soft start valve pocket again, makes the oil pressure of big back cavity constantly rise to the import oil pressure and equates.Because of the cross-section area of soft start valve pocket cross-section area greater than soft start main valve plug inlet, so big back cavity acts on pressure that soft starting valve puts acts on the soft start main valve plug greater than the import oil pressure pressure by oil pressure is formed, make soft start valve pocket and soft start main valve plug be pushed to the right side together, and then close the soft start main valve plug.The soft start main valve plug promptly is the soft start valve pocket back cavity oil pressure rise time from being opened to the time of closing.
By to test of the present utility model, the result shows that it can be used for Hydrauservo System and play the safety protection effect, has to start steadily, and noise is low, prolongs advantages such as pump motor frequency variator working life.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Embodiment
Referring to Fig. 1, the utility model is by valve body 1, start valve pocket 2, soft start main valve plug 3, main valve plug spring 6, soft start valve pocket 5 is formed, valve body 1 is provided with import and outlet, valve body 1 is fixedlyed connected with startup valve pocket 2, soft start valve pocket 5 is slidingly connected with startup valve pocket 2, soft start main valve plug 3 is slidingly connected with soft start valve pocket 5, screen element 4 is fixedlyed connected with soft start main valve plug 3, soft start valve pocket 5 and soft start main valve plug 3 are divided into main valve plug ante-chamber 10 with body cavity, main valve plug back cavity 9 and soft start valve pocket back cavity 8, throttle orifice 11 during soft start main valve plug 3 axially is provided with, middle throttle orifice 11 is communicated with main valve plug ante-chamber 10 and main valve plug back cavities 9, soft start main valve plug 3 footpaths upwards are provided with equally distributed main valve plug side opening 12, and its quantity can be decided according to actual working environment.Soft start valve pocket 5 is axially arranged with fixed orifice 7, and fixed orifice 7 is communicated with main valve plug back cavity 9 and soft start valve pocket back cavity 8, and main valve plug spring 6 is installed in soft start valve pocket 5 cavitys.When import has oil pressure, main valve plug back cavity 9 oil pressure are zero, so soft start main valve plug 3 moves after rapid having overcome main valve plug spring 6 resistances after, soft start main valve plug 3 separates with startup valve pocket 2, system unloaded, after in the process of moving, main valve plug side opening 12 is communicated with outlet, hydraulic oil flows back to oil cylinder from main valve plug side opening 12 through outlet, thereby plays the effect of auxiliary off-load.When soft start main valve plug 3 moves to when contacting with soft start valve pocket 5, main valve plug side opening 12 is by complete closed, and main valve plug back cavity 9 no longer is communicated with outlet.Import fluid enters into main valve plug back cavity 9 through the middle throttle orifice 11 of soft start main valve plug 3, and the fixed orifice 7 through soft start valve pocket 5 rear portions enters into soft start valve pocket back cavity 8 again, makes soft start valve pocket back cavity 8 oil pressure constantly rise to the import oil pressure and equates.Because of the cross-section area of soft start valve pocket 8 cross-section area greater than soft start main valve plug 3 inlets, so soft start valve pocket back cavity 8 is acted on the pressure of soft start main valve plug 3 greater than the import oil pressure by the formed pressure that acts on the soft start valve pocket 5 of oil pressure, make soft start valve pocket 5 and soft start main valve plug 3 be pushed to the right side together, and then close soft start main valve plug 3.Soft start main valve plug 3 promptly is the 8 oil pressure rise time of soft start valve pocket back cavity from being opened to the time of closing.
Claims (1)
1. soft starting valve, it comprises valve body (1), start valve pocket (2), soft start main valve plug (3), main valve plug spring (6), soft start valve pocket (5), valve body (1) is provided with import and outlet, it is characterized in that valve body (1) and start valve pocket (2) and fixedly connected, soft start valve pocket (5) is slidingly connected with startup valve pocket (2), soft start main valve plug (3) is slidingly connected with soft start valve pocket (5), screen element (4) is fixedlyed connected with soft start main valve plug (3), soft start valve pocket (5) and soft start main valve plug (3) are divided into main valve plug ante-chamber (10) with valve body (1) inner chamber, main valve plug back cavity (9) and soft start valve pocket back cavity (8), soft start main valve plug (3) axially is provided with middle throttle orifice (11), middle throttle orifice (11) is communicated with main valve plug ante-chamber (10) and main valve plug back cavity (9), soft start main valve plug (3) footpath upwards is provided with equally distributed main valve plug side opening (12), soft start valve pocket (5) is axially arranged with fixed orifice (7), fixed orifice (7) is communicated with main valve plug back cavity (9) and soft start valve pocket back cavity (8), and main valve plug spring (6) is installed in soft start valve pocket (5) cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202442044U CN201547065U (en) | 2009-11-26 | 2009-11-26 | Soft start valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202442044U CN201547065U (en) | 2009-11-26 | 2009-11-26 | Soft start valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201547065U true CN201547065U (en) | 2010-08-11 |
Family
ID=42602237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202442044U Expired - Fee Related CN201547065U (en) | 2009-11-26 | 2009-11-26 | Soft start valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201547065U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032401A (en) * | 2012-12-27 | 2013-04-10 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Unloading starting hydraulic valve |
| CN103670476A (en) * | 2013-12-09 | 2014-03-26 | 四川航天电液控制有限公司 | Soft starting valve |
| CN104454741A (en) * | 2014-11-20 | 2015-03-25 | 浙江海聚科技有限公司 | Mass-flow liquid extracting valve |
| CN104930023A (en) * | 2015-07-06 | 2015-09-23 | 淳靖香港有限公司 | Bypass type filter |
| CN105889163A (en) * | 2015-01-26 | 2016-08-24 | 大连伟达液压技术有限公司 | Hydraulic valve |
-
2009
- 2009-11-26 CN CN2009202442044U patent/CN201547065U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032401A (en) * | 2012-12-27 | 2013-04-10 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Unloading starting hydraulic valve |
| CN103032401B (en) * | 2012-12-27 | 2016-01-20 | 中国航空工业集团公司金城南京机电液压工程研究中心 | A kind of starting off-load hydrovalve |
| CN103670476A (en) * | 2013-12-09 | 2014-03-26 | 四川航天电液控制有限公司 | Soft starting valve |
| CN103670476B (en) * | 2013-12-09 | 2015-09-09 | 四川航天电液控制有限公司 | Soft starting valve |
| CN104454741A (en) * | 2014-11-20 | 2015-03-25 | 浙江海聚科技有限公司 | Mass-flow liquid extracting valve |
| CN104454741B (en) * | 2014-11-20 | 2016-05-11 | 浙江海聚科技有限公司 | A kind of large flow liquid taking valve |
| CN105889163A (en) * | 2015-01-26 | 2016-08-24 | 大连伟达液压技术有限公司 | Hydraulic valve |
| CN104930023A (en) * | 2015-07-06 | 2015-09-23 | 淳靖香港有限公司 | Bypass type filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100811 Termination date: 20101126 |