CN1530318A - Oil recovery valve device with hydraulic oil flow control - Google Patents
Oil recovery valve device with hydraulic oil flow control Download PDFInfo
- Publication number
- CN1530318A CN1530318A CNA031194346A CN03119434A CN1530318A CN 1530318 A CN1530318 A CN 1530318A CN A031194346 A CNA031194346 A CN A031194346A CN 03119434 A CN03119434 A CN 03119434A CN 1530318 A CN1530318 A CN 1530318A
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- China
- Prior art keywords
- valve
- fuel
- return valve
- oil
- hydraulic fluid
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Abstract
An oil return valve unit able to control the flow of hydraulic oil is composed of external valve body, steel ball, throttle spring, throttle valve body and oil return valve. Said hollow external valve body is divided into front and back chambers by partition with valve hole on it. Said throttle valve body has at least one channel on side wall. Said steel ball, throttle spring and throttle valve body are contained in the back chamber of external valve body.
Description
Technical field
The invention belongs to valve, particularly a kind of fuel-return valve device of may command hydraulic fluid flow rate.
Background technology
The oil return of known hydraulic jack design mainly is to utilize fuel-return valve, or claims Dump valve, can be back to outer oil cylinder with the hydraulic oil of control inner cylinder, or claim oil groove, hydraulic jack act arm is descended and returns back to original armed state.Only hydraulic jack withstands on zero load or has when refluxing under the different conditions of load, known oil return apparatus and flow that can't modulated pressure oil, therefore, having under the load condition, hydraulic oil is because its inner cylinder pressure is very big, so its flow is big and speed is fast, causing hydraulic jack to lift arm is to be quick decline having under the load condition, so cause structural failure easily, and have the worry of safety in utilization.
Summary of the invention
The purpose of this invention is to provide a kind ofly control the oil return flow, prevent structural failure, the fuel-return valve device of may command hydraulic fluid flow rate safe in utilization.
The present invention includes outer valve, steel ball, throttling spring, throttle valve body and fuel-return valve; Outer valve is a ducted body, is provided with the spacer portion that inner area is divided into cup and chamber, back in it, is provided with the valve opening that is communicated with forward and backward chamber in spacer portion; Cup is offered oil duct in selected side-walls; Stage casing, back chamber forms coniform valve base; The throttle valve body periphery offers at least one limit wall conduit, its front end have with outer valve after the corresponding cone part of chamber coniform valve base, and offer at least one throttling conduit that be communicated with to connect the wall conduit in the cone part periphery; Diameter is inserted behind the outer valve indoor in regular turn greater than steel ball, throttling spring and the throttle valve body of valve opening diameter, and makes steel ball be positioned at the valve opening place, and the throttling spring is between steel ball and throttle valve body.
Wherein:
Fuel-return valve is placed in the outer valve cup, and is provided with spring between fuel-return valve and valve opening.
Throttle valve body cone part front end extends the registration mast of planting the location for the throttling spring housing.
The chamber end port is embedded the clasp to throttle valve body card fastening position behind the outer valve.
The oil duct that is opened in outer valve cup sidewall leads to outer oil cylinder.
Outer valve is provided with in cup place periphery wall is convenient to lock screw part and the polygonal portion that is incorporated into hydraulic jack that establish.
The outer valve periphery wall is offered at least more than one fuel feeding sealing and is nested with oil seal groove to prevent that hydraulic oil from leaking outside.
The fuel-return valve front end is provided with thimble.
Owing to the present invention includes outer valve, steel ball, throttling spring, throttle valve body and fuel-return valve; Outer valve is a ducted body, is provided with the spacer portion that inner area is divided into cup and chamber, back in it, is provided with the valve opening that is communicated with forward and backward chamber in spacer portion; Cup is offered oil duct in selected side-walls; Stage casing, back chamber forms coniform valve base; The throttle valve body periphery offers at least one limit wall conduit, its front end have with outer valve after the corresponding cone part of chamber coniform valve base, and offer at least one throttling conduit that be communicated with to connect the wall conduit in the cone part periphery; Diameter is inserted behind the outer valve indoor in regular turn greater than steel ball, throttling spring and the throttle valve body of valve opening diameter, and makes steel ball be positioned at the valve opening place, and the throttling spring is between steel ball and throttle valve body.During use, the present invention is mounted between the inside and outside oil cylinder of hydraulic jack.When fuel-return valve is when closing, steel ball also holds close valve orifice, passes through the oil duct oil return to forbid hydraulic oil; When fuel-return valve is opened, and hydraulic jack is in load condition, because the hydraulic fluid pressure of inner cylinder is very big, throttle valve body moves to the valve opening direction at hydraulic fluid pressure effect lower compression throttling spring, the corresponding subsides with the outer valve coniform valve base in its nose circle tapering are touched, so make in the inner cylinder hydraulic oil only can connect wall conduit and cone part throttling conduit and be all that amount flows out by being opened in the throttle valve body periphery, and outside oil duct is back to oil cylinder, promptly produce the restraining effect of hydraulic oil oil return flow, make its flow reduce, thereby the effectively descending speed of modulated pressure jack, and effect with safe average rate; When fuel-return valve is opened, and hydraulic jack is in no load condition, because the hydraulic fluid pressure of inner cylinder is little, make hydraulic fluid pressure that throttle valve body bears elastic force less than the throttling spring, under the effect of throttling spring force, make its nose circle tapering and outer valve coniform valve base keep bigger opening to sow discord the crack, so make in the inner cylinder hydraulic oil connect opening between wall conduit and cone part and the outer valve coniform valve base and sow discord a large amount of outflows fast in crack by being opened in throttle valve body, and outside oil duct is back to oil cylinder, make hydraulic jack lift arm and descend rapidly; Promptly withstand on when carrying out oil return under the load condition when hydraulic jack, can make the hydraulic oil oil return flow of inner cylinder be subjected to effective restraining, so the oil return flow of hydraulic oil system is back to outer oil cylinder in gentle all modes of amount by the present invention, makes hydraulic jack can be the decline of safe average rate.Not only control the oil return flow, prevent structural failure, and safe in utilization, thus reach purpose of the present invention.
Description of drawings
Fig. 1, for decomposition texture schematic isometric of the present invention.
Fig. 2, for throttle valve body structural representation cutaway view of the present invention.
Fig. 3, for throttle valve body structural representation birds-eye view of the present invention.
Fig. 4, establish structural representation cutaway view between the inside and outside oil cylinder of hydraulic jack for of the present invention group.
Fig. 5, for structural representation cutaway view of the present invention (fuel-return valve is closed condition).
Fig. 6, for operating state scheme drawing of the present invention (oil return under the load condition).
Fig. 7, be A portion partial enlarged drawing (the oil return flow is the restraining state) among Fig. 6.
Fig. 8, for operating state scheme drawing of the present invention (oil return under the no load condition).
Fig. 9, be B portion partial enlarged drawing among Fig. 8 (oil return flow be pass through state fast).
The specific embodiment
As shown in Figure 1, the present invention includes outer valve 1, steel ball 2, throttling spring 3, throttle valve body 4 and fuel-return valve 5.
As Fig. 1, Fig. 2, shown in Figure 3, throttle valve body 4 peripheries offer at least one limit wall conduit 42, front end has and chamber, outer valve 1 back 13 coniform valve bases, 131 corresponding cone parts 41, and offer at least one throttling conduit 411 that be communicated with to connect wall conduit 42 in cone part 41 peripheries, also can extend the registration mast 412 of planting the location for throttling spring 3 covers in cone part 41 front ends.
During assembling, the return spring 51 and the fuel-return valve 5 of hydraulic jack is located in outer valve 1 cup 12; Steel ball 2, throttling spring 3, throttle valve body 4 and clasp 6 are inserted in the chamber 13, outer valve 1 back in regular turn, make steel ball 2 be positioned at outer valve 1 spacer portion 11 valve openings 14 places, with the keying of control valve bore 14; Throttling spring 3 is resisted against between steel ball 2 and the throttle valve body 4; Clasp 6 is embedded at chamber, outer valve 1 back 13 end ports, so that throttle valve body 4 is blocked the fastening positions.
During use, as shown in Figure 4, the present invention is mounted between the inside and outside oil cylinder 101,102 of hydraulic jack.When hydraulic jack 10 carries out oil return under load condition, can make the hydraulic oil oil return flow of inner cylinder 101 be subjected to effective restraining, so the oil return flow of hydraulic oil system is back to outer oil cylinder 102 in gentle all modes of amount by the present invention, makes hydraulic jack 10 can be the decline of safe average rate.
As Fig. 1, shown in Figure 4, outer valve 1 is provided with to be convenient to lock in cup 12 place's periphery walls establishes the screw part 16 that is incorporated into hydraulic jack 10 and polygonal 17, and offers at least more than one fuel feeding sealing 19 at outer valve 1 periphery wall and be nested with oil seal groove 18 to prevent that hydraulic oil from leaking outside.
Fuel-return valve 5 front ends are provided with thimble 52.When fuel-return valve 5 is opened, but mat thimble 52 promotes steel ball 2 to open the valve opening 14 on outer valve 1 spacer portion 11.
As shown in Figure 5, when fuel-return valve 5 is when closing, steel ball 2 also holds close valve orifice 14, enters outer oil cylinder 102 to forbid hydraulic oil by oil duct 15.
As Fig. 6, shown in Figure 7, when fuel-return valve 5 is opened, and hydraulic jack 10 is in load condition, because the hydraulic fluid pressure of inner cylinder 101 is very big, throttle valve body 4 moves to valve opening 14 directions at hydraulic fluid pressure effect lower compression throttling spring 3, its nose circle tapering 41 is touched with the 131 corresponding subsides of outer valve 1 coniform valve base, so make in the inner cylinder 101 hydraulic oil only can connect wall conduit 42 and cone part 41 throttling conduits 411 and be all that amount flows out by being opened in throttle valve body 4 peripheries, and outside oil duct 15 is back to oil cylinder 102, promptly produce the restraining effect of hydraulic oil oil return flow, make its flow reduce, thereby the effectively descending speed of modulated pressure jack 10, and effect with safe average rate.
As Fig. 8, shown in Figure 9, when fuel-return valve 5 is opened, and hydraulic jack 10 is in no load condition, because the hydraulic fluid pressure of inner cylinder 101 is little, make hydraulic fluid pressure that throttle valve body 4 bears elastic force less than throttling spring 3, under the 3 elastic force effects of throttling spring, make its nose circle tapering 41 and outer valve 1 coniform valve base 131 keep bigger opening to sow discord the crack, so make in the inner cylinder 101 hydraulic oil connect opening between wall conduit 42 and cone part 41 and outer valve 1 coniform valve base 131 and sow discord a large amount of outflows fast in crack by being opened in throttle valve body 4, and outside oil duct 15 is back to oil cylinder 102, make hydraulic jack 10 lift arms and descend rapidly.
Claims (8)
1, a kind of fuel-return valve device of may command hydraulic fluid flow rate, it comprises outer valve, steel ball, spring and fuel-return valve; Outer valve is a ducted body, is provided with the spacer portion that inner area is divided into cup and chamber, back in it, is provided with the valve opening that is communicated with forward and backward chamber in spacer portion; Cup is offered oil duct in selected side-walls; Diameter is inserted behind the outer valve indoor in regular turn greater than the steel ball of valve opening diameter and spring, and makes steel ball be positioned at the valve opening place; It is characterized in that stage casing, chamber, described back forms coniform valve base; The indoor throttle valve body that offsets with spring that is installed with in back; The throttle valve body periphery offers at least one limit wall conduit, its front end have with outer valve after the corresponding cone part of chamber coniform valve base, and offer at least one throttling conduit that be communicated with to connect the wall conduit in the cone part periphery.
2, the fuel-return valve device of may command hydraulic fluid flow rate according to claim 1 is characterized in that described fuel-return valve is placed in the outer valve cup, and be provided with spring between fuel-return valve and valve opening.
3, the fuel-return valve device of may command hydraulic fluid flow rate according to claim 1 is characterized in that described throttle valve body cone part front end extends the registration mast of planting the location for the throttling spring housing.
4, the fuel-return valve device of may command hydraulic fluid flow rate according to claim 1 is characterized in that chamber end port behind the described outer valve is embedded the clasp to throttle valve body card fastening position.
5, the fuel-return valve device of may command hydraulic fluid flow rate according to claim 1 is characterized in that the described oil duct that is opened in outer valve cup sidewall leads to outer oil cylinder.
6, the fuel-return valve device of may command hydraulic fluid flow rate according to claim 1 is characterized in that described outer valve is provided with in cup place periphery wall and is convenient to lock screw part and the polygonal portion that is incorporated into hydraulic jack that establish.
7, the fuel-return valve device of may command hydraulic fluid flow rate according to claim 1 is characterized in that described outer valve periphery wall offers at least more than one fuel feeding sealing and be nested with oil seal groove to prevent that hydraulic oil from leaking outside.
8, the fuel-return valve device of may command hydraulic fluid flow rate according to claim 1 and 2 is characterized in that described fuel-return valve front end is provided with thimble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031194346A CN1530318A (en) | 2003-03-12 | 2003-03-12 | Oil recovery valve device with hydraulic oil flow control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031194346A CN1530318A (en) | 2003-03-12 | 2003-03-12 | Oil recovery valve device with hydraulic oil flow control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1530318A true CN1530318A (en) | 2004-09-22 |
Family
ID=34285101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031194346A Pending CN1530318A (en) | 2003-03-12 | 2003-03-12 | Oil recovery valve device with hydraulic oil flow control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1530318A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092653A (en) * | 2011-03-11 | 2011-06-15 | 常熟市藕渠针织机械厂 | Oil pressure hoisting jack provided with safe release valve |
| WO2016183995A1 (en) * | 2015-05-18 | 2016-11-24 | 杭州盈江机械制造有限公司 | Hydraulic oil pump with automatic speed regulation |
| EP3816094A1 (en) | 2019-11-04 | 2021-05-05 | Shinn Fu Corporation | Oil returning valve set with multi-stage throttling control |
| CN112780621A (en) * | 2019-11-04 | 2021-05-11 | 信孚产业股份有限公司 | Oil return valve group with multi-section throttling control |
-
2003
- 2003-03-12 CN CNA031194346A patent/CN1530318A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092653A (en) * | 2011-03-11 | 2011-06-15 | 常熟市藕渠针织机械厂 | Oil pressure hoisting jack provided with safe release valve |
| WO2016183995A1 (en) * | 2015-05-18 | 2016-11-24 | 杭州盈江机械制造有限公司 | Hydraulic oil pump with automatic speed regulation |
| EP3816094A1 (en) | 2019-11-04 | 2021-05-05 | Shinn Fu Corporation | Oil returning valve set with multi-stage throttling control |
| CN112780621A (en) * | 2019-11-04 | 2021-05-11 | 信孚产业股份有限公司 | Oil return valve group with multi-section throttling control |
| AU2019280096B2 (en) * | 2019-11-04 | 2021-09-23 | Shinn Fu Corporation | Oil Returning Valve Set with Multi-Stage Throttling Control |
| US11460119B2 (en) | 2019-11-04 | 2022-10-04 | Shinn Fu Corporation | Oil returning valve set with multi-stage throttling control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |