CN102650307A - Automatic circulation oil filtering system for oil cylinder of hydraulic press - Google Patents
Automatic circulation oil filtering system for oil cylinder of hydraulic press Download PDFInfo
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- CN102650307A CN102650307A CN201210131959XA CN201210131959A CN102650307A CN 102650307 A CN102650307 A CN 102650307A CN 201210131959X A CN201210131959X A CN 201210131959XA CN 201210131959 A CN201210131959 A CN 201210131959A CN 102650307 A CN102650307 A CN 102650307A
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- oil
- oil cylinder
- directional control
- control valve
- solenoid directional
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Abstract
The invention relates to an automatic circulation oil filtering system for an oil cylinder of a hydraulic press, which is characterized by comprising an oil cylinder, magnetic exchange valves, a hydraulic oil filter and oil tanks, wherein one end of a first magnetic exchange valve is communicated with a first oil tank, the other end of the first magnetic exchange valve is connected with an upper oil inlet of the oil cylinder through a pipeline, an upper oil outlet of the oil cylinder is connected with a second magnetic exchange valve through the pipeline, and the second magnetic exchange valve is communicated with the hydraulic oil filter through the pipeline; one end of a third magnetic exchange valve is communicated with a second oil tank, the other end of the third magnetic exchange valve is connected with a lower oil inlet of the oil cylinder through the pipeline, a lower oil outlet of the oil cylinder is connected with a fourth magnetic exchange valve through the pipeline, and the fourth magnetic exchange valve is communicated with the hydraulic oil filter through the pipeline; and the hydraulic oil filter is communicated with a third oil tank. The automatic circulation oil filtering system has the advantages that the oil cylinder strain and valve clamping probability can be reduced, and the maintenance cost of the hydraulic press is lowered.
Description
Technical field
The invention belongs to hydraulic press manufacturing technology field, particularly relate to a kind of hydraulic press oil cylinder automatic cycle oil filtering system.
Background technique
Along with the demand of various industries to hydraulic press constantly increases, the function of hydraulic press also constantly develops and improves, and oil cylinder plays important effect as the main transmission part of hydraulic press in entire work process.The oil pipe that hydraulic press in the known technology is connected to oil cylinder all is from the oil extraction of a hydraulic fluid port fuel feeding; Though this kind structure has reduced amount of finish; But in-oil cylinder impurity of this kind structure or grit are difficult to discharge; Especially oil cylinder not only is easy to cause the oil cylinder surface to pull and blocks valve under the operating mode of circumstance complication, and has increased the maintenance cost of hydraulic press.
Summary of the invention
The present invention for solve the technical problem that exists in the known technology provide a kind of simple in structure, can avoid oil cylinder to pull and block the hydraulic press oil cylinder automatic cycle oil filtering system of valve.
The technological scheme that the present invention takes for the technical problem that exists in the solution known technology is:
Hydraulic press oil cylinder automatic cycle oil filtering system; It is characterized in that: comprise oil cylinder, solenoid directional control valve, hydraulic oil filtrating equipment and fuel tank; Said first solenoid directional control valve, one end is communicated with first fuel tank; The other end is through the last filler opening of pipeline connection oil cylinder, and oil outlet connects second solenoid directional control valve through pipeline on the oil cylinder, and second solenoid directional control valve is through pipeline connection hydraulic oil filtrating equipment; Said the 3rd solenoid directional control valve one end is through pipeline connection second fuel tank, and the other end is through the following filler opening of pipeline connection oil cylinder, and oil outlet connects the 4th solenoid directional control valve through pipeline under the oil cylinder, and the 4th solenoid directional control valve is through pipeline connection hydraulic oil filtrating equipment; Said hydraulic oil filtrating equipment is communicated with the 3rd fuel tank.
Advantage and good effect that the present invention has are: because the present invention adopts technique scheme; The epicoele and the cavity of resorption that are about to oil cylinder are designed with a filler opening and an oil outlet respectively; And the oil-feed through solenoid directional control valve control oil cylinder and fuel-displaced; The oil-feed of its filler opening is not fuel-displaced, the only fuel-displaced not oil-feed of two oil outlets.So not only can reduce oil cylinder and pull and block the valve probability, but also can reduce the maintenance cost of hydraulic press.
Description of drawings
Fig. 1 is a systematic schematic diagram of the present invention;
Fig. 2 is an oil cylinder downlink working view of the present invention;
Fig. 3 is the up working state schematic representation of oil cylinder of the present invention.
Among the figure: 1, first solenoid directional control valve; 2, second solenoid directional control valve; 3, the 3rd solenoid directional control valve; 4, the 4th solenoid directional control valve; 5, hydraulic oil filtrating equipment; 6, first fuel tank; 7, oil cylinder; 7-1, last filler opening; 7-2, last oil outlet; 7-3, following filler opening; 7-4, following oil outlet; 8, second fuel tank; 9, the 3rd fuel tank; A, filtration back high pressure oil; B, filtration back high pressure oil.
Embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, the following examples of giving an example now, and conjunction with figs. specifies as follows:
See also Fig. 1; Hydraulic press oil cylinder automatic cycle oil filtering system;: comprise oil cylinder 7, solenoid directional control valve, hydraulic oil filtrating equipment 5 and fuel tank, said first solenoid directional control valve, 1 one ends are communicated with first fuel tank 6, and the other end connects the last filler opening 7-1 of oil cylinder 7 through pipeline; The last oil outlet 7-2 of oil cylinder connects second solenoid directional control valve, 2, the second solenoid directional control valves through pipeline connection hydraulic oil filtrating equipment 5 through pipeline.Said the 3rd solenoid directional control valve 3 one ends are through pipeline connection second fuel tank 8; The other end connects the following filler opening 7-3 of oil cylinder through pipeline; The following oil outlet 7-4 of oil cylinder connects the 4th solenoid directional control valve 4, the four solenoid directional control valves through pipeline connection hydraulic oil filtrating equipment 5 through pipeline.Said hydraulic oil filtrating equipment 5 is communicated with the 3rd fuel tank 9.
Working principle of the present invention is:
See also Fig. 2 and Fig. 3; When oil cylinder 7 was descending, first solenoid directional control valve 1 and the 4th solenoid directional control valve 4 were in opening state, and second solenoid directional control valve 2 and the 3rd solenoid directional control valve 3 are in closed condition; Filter back high pressure oil A and get into oil cylinder 7; At this moment, the hydraulic oil of oil cylinder 7 cavity of resorptions is discharged entering hydraulic oil filtrating equipment 5 from the 4th solenoid directional control valve 4 and is filtered, and the hydraulic oil after the filtration gets into the 3rd fuel tank 9 and can realize reusing.
When oil cylinder 7 is up; Second solenoid directional control valve 2 and the 3rd solenoid directional control valve 3 are in opening state; First solenoid directional control valve 1 and the 4th solenoid directional control valve 4 are in closed condition; Filter back high pressure oil B and get into oil cylinder, the hydraulic oil of oil cylinder epicoele is discharged entering hydraulic oil filtrating equipment 5 from second solenoid directional control valve 2 and is filtered, and the hydraulic oil after the filtration gets into the 3rd fuel tank and can realize reusing.
Claims (1)
1. hydraulic press oil cylinder automatic cycle oil filtering system; It is characterized in that: comprise oil cylinder, solenoid directional control valve, hydraulic oil filtrating equipment and fuel tank; Said first solenoid directional control valve (1) one end is communicated with fuel tank first (6); The other end is through the last filler opening (7-1) of pipeline connection oil cylinder (7), and oil outlet on the oil cylinder (7-2) connects second solenoid directional control valve (2) through pipeline, and second solenoid directional control valve (2) is through pipeline connection hydraulic oil filtrating equipment (5); Said the 3rd solenoid directional control valve (3) one ends are through pipeline connection second fuel tank (8); The other end connects the following filler opening (7-3) of oil cylinder (7) through pipeline; Oil outlet under the oil cylinder (7-4) connects the 4th solenoid directional control valve (4) through pipeline, and the 4th solenoid directional control valve (4) is through pipeline connection hydraulic oil filtrating equipment (5); Said hydraulic oil filtrating equipment (5) is communicated with the 3rd fuel tank (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210131959XA CN102650307A (en) | 2012-04-27 | 2012-04-27 | Automatic circulation oil filtering system for oil cylinder of hydraulic press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210131959XA CN102650307A (en) | 2012-04-27 | 2012-04-27 | Automatic circulation oil filtering system for oil cylinder of hydraulic press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102650307A true CN102650307A (en) | 2012-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210131959XA Pending CN102650307A (en) | 2012-04-27 | 2012-04-27 | Automatic circulation oil filtering system for oil cylinder of hydraulic press |
Country Status (1)
| Country | Link |
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| CN (1) | CN102650307A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791069A (en) * | 2014-03-06 | 2014-05-14 | 济宁职业技术学院 | Automatic back-and-forth oil suction and discharge device for speed reducer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5107875A (en) * | 1988-04-29 | 1992-04-28 | Sundholm Goeran | Apparatus for flushing of hydraulic pipe systems or the like |
| CN1803448A (en) * | 2006-01-24 | 2006-07-19 | 东北大学 | Constant backpressure and proportion controlled sinter apparatus HAGC System |
| CN201456413U (en) * | 2009-06-26 | 2010-05-12 | 天津市天锻液压有限公司 | Simple high-speed hydraulic press |
| CN101725592A (en) * | 2009-12-10 | 2010-06-09 | 衡阳华菱连轧管有限公司 | Method for preventing hydraulic directional control valve from blocking and braking caused by polluting debris in pipeline in hydraulic system and device thereof |
| CN202017668U (en) * | 2011-03-25 | 2011-10-26 | 辽阳石化机械设计制造有限公司 | Hydraulic system capable of ensuring synchronized motion of hydraulic oil cylinders of hydraulic precision forging machine |
| CN102383769A (en) * | 2011-10-14 | 2012-03-21 | 上海大学 | Power compensation type hydraulic pressurizing water injection system |
-
2012
- 2012-04-27 CN CN201210131959XA patent/CN102650307A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5107875A (en) * | 1988-04-29 | 1992-04-28 | Sundholm Goeran | Apparatus for flushing of hydraulic pipe systems or the like |
| CN1803448A (en) * | 2006-01-24 | 2006-07-19 | 东北大学 | Constant backpressure and proportion controlled sinter apparatus HAGC System |
| CN201456413U (en) * | 2009-06-26 | 2010-05-12 | 天津市天锻液压有限公司 | Simple high-speed hydraulic press |
| CN101725592A (en) * | 2009-12-10 | 2010-06-09 | 衡阳华菱连轧管有限公司 | Method for preventing hydraulic directional control valve from blocking and braking caused by polluting debris in pipeline in hydraulic system and device thereof |
| CN202017668U (en) * | 2011-03-25 | 2011-10-26 | 辽阳石化机械设计制造有限公司 | Hydraulic system capable of ensuring synchronized motion of hydraulic oil cylinders of hydraulic precision forging machine |
| CN102383769A (en) * | 2011-10-14 | 2012-03-21 | 上海大学 | Power compensation type hydraulic pressurizing water injection system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103791069A (en) * | 2014-03-06 | 2014-05-14 | 济宁职业技术学院 | Automatic back-and-forth oil suction and discharge device for speed reducer |
| CN103791069B (en) * | 2014-03-06 | 2016-03-02 | 济宁职业技术学院 | A kind of automatically round suction discharge equipment for retarder |
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Application publication date: 20120829 |