CN202520671U - Pressure-maintaining hydraulic oil container - Google Patents
Pressure-maintaining hydraulic oil container Download PDFInfo
- Publication number
- CN202520671U CN202520671U CN 201220059951 CN201220059951U CN202520671U CN 202520671 U CN202520671 U CN 202520671U CN 201220059951 CN201220059951 CN 201220059951 CN 201220059951 U CN201220059951 U CN 201220059951U CN 202520671 U CN202520671 U CN 202520671U
- Authority
- CN
- China
- Prior art keywords
- valve
- hydraulic oil
- hollow cavity
- oil container
- filter core
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
- F16K17/19—Equalising valves predominantly for tanks
- F16K17/196—Equalising valves predominantly for tanks spring-loaded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/26—Supply reservoir or sump assemblies
- F15B1/265—Supply reservoir or sump assemblies with pressurised main reservoir
Abstract
The utility model relates to a pressure-maintaining hydraulic oil container which comprises a container body, wherein a filtering assembly is arranged in the container body; a breather valve, which is arranged at the top of the container body, comprises a valve body with a hollow cavity body; a valve is arranged at the bottom of the container body; a valve rod penetrates the hollow cavity body; a filtering core is also arranged in the valve body and is communicated with the hollow cavity body through hole passages in the inner wall of the hollow cavity body; air-out springs are arranged in the hollow cavity body and sleeved on the valve rod, and an air-in spring is arranged on the valve seat; the breather valve is a non-venting breather valve; and the starting pressure of the selected air-out springs is larger than the maximum inner pressure of the hydraulic oil container. Due to the adoption of the scheme, the oil container is insulated with the outside atmosphere and no air exchange occurs, as a result, the oil and gas are prevented from ejecting outside or the air is prevented from entering the oil container to pollute the pressure oil. The pressure-maintaining hydraulic oil container has the advantages of convenience in use and practicality.
Description
Technical field
The utility model relates to the air-breathing technical field of hydraulic oil container exhaust, especially a kind of pressurize hydraulic oil container that is applied to hydraulic shovel.
Background technique
The employed hydraulic oil container of excavator all is provided with outside exhaust and air-breathing inwards inhalation valve at present; Hydraulic oil is got back to fuel tank when the oil cylinder on the equipment is regained; Gas discharges through inhalation valve in the fuel tank; Hydraulic oil gets into oil cylinder from fuel tank when the oil cylinder on the equipment stretches out, and this moment, air was air-breathing in fuel tank through inhalation valve, was provided with the spring of exhaust and air inlet in the inhalation valve.As shown in Figure 1, above hydraulic oil container 0, be provided with exhaust inhalation valve 1, when oil cylinder stretches out, when hydraulic oil gets into oil cylinder, hydraulic oil reduces in the fuel tank 0, forms negative pressure in the fuel tank 0, inhalation valve 1 air inlet spring is opened, air gets into fuel tank 0; When the oil cylinder withdrawal, when hydraulic oil is got back to fuel tank 0; Inhalation valve 1 exhaust spring is opened, and oil gas outwards sprays, and the existing problem of this technological scheme is: oil temperature rise during owing to excavator work; When gas is discharged fuel tank 0 through inhalation valve 1; Will inevitably oil gas be discharged together, be sprayed at fuel tank 0 surface, cause inhalation valve 1 to damage the illusion of leakage of oil to the user; And when inhalation valve 1 is air-breathing inwards, will inevitably bring airborne impurity into fuel tank 0, cause the pollution of hydraulic oil.
The model utility content
The purpose of the utility model provides a kind of novel pressurize hydraulic oil container, can effectively avoid oil gas outwards ejection or air entering fuel tank pollution hydraulic oil.
The utility model solves the technological scheme that its technical problem adopted:
A kind of pressurize hydraulic oil container comprises casing, is provided with filter core assembly in the casing; Be provided with inhalation valve at said casing top, said inhalation valve comprises valve body, and said valve body has hollow cavity; The bottom is provided with valve seat; Valve rod passes from said hollow cavity, on said valve body, also is provided with filter core, and said filter core is communicated with said hollow cavity through the duct of being located on the said hollow cavity inwall; In said hollow cavity, on the said valve rod, be with exhaust spring; On said valve seat, be provided with the air inlet spring; Wherein, said inhalation valve is not exhaust inhalation valve, and the said exhaust spring of choosing satisfies makes the cracking pressure of said exhaust spring be higher than the requirement of said hydraulic oil container maximum internal pressure.
Further, said filter core assembly comprises oil suction filter core assembly and oil return filter core assembly.
Further, said filter core is the annulus bodily form, is set on the said valve body.
Further, the cracking pressure of said exhaust spring is 0.05MPa.
The utility model makes fuel tank and ambient atmosphere completely cut off, and air exchange does not take place, and has avoided oil gas outwards ejection and air entering fuel tank pollution hydraulic oil, and is easy to use, has practicability.
Description of drawings
Fig. 1 is the structural representation of hydraulic oil container of the prior art;
Fig. 2 is the structural representation of the utility model pressurize hydraulic oil container;
Fig. 3 is the structural representation of the not exhaust inhalation valve of the utility model pressurize hydraulic oil container.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further, but not as the qualification of the utility model.
Please referring to illustrated in figures 1 and 2, the utility model pressurize hydraulic oil container comprises casing 2, is provided with common filter core assembly (not marking in the drawings) in the casing 2, and filter core assembly comprises oil suction filter core assembly and oil return filter core assembly.Be provided with inhalation valve 1 at casing 2 tops.See shown in Figure 3ly, inhalation valve 1 comprises valve body 11, and valve body 11 has hollow cavity 15; The bottom is provided with valve seat 12, and valve rod 13 passes from hollow cavity 15, on valve body 11, also is provided with filter core 14; Filter core 14 is communicated with hollow cavity 15 through the duct of being located on hollow cavity 15 inwalls 16; Particularly, filter core 14 is the annulus bodily form, is set on the valve body 11.In hollow cavity 15, on the valve rod 13, be with exhaust spring 17; On valve seat 12, be provided with air inlet spring 18; Wherein, inhalation valve 1 is not exhaust inhalation valve, and the exhaust spring of choosing 17 satisfies makes its cracking pressure be higher than the requirement of hydraulic oil container maximum internal pressure; Press in the fuel tank during promptly greater than system's maximum recirculating oil quantity, specifically can realize through the rigidity that changes spring.Here, the cracking pressure of exhaust spring 17 is 0.05Mpa, greater than 0.01MPa of the prior art.Working principle is, when oil cylinder is regained, when hydraulic oil is got back to fuel tank, is pressed because inhalation valve 1 exhaust cracking pressure is higher than in the fuel tank, and outwards exhaust of fuel tank, gas volume is compressed, and the pressure rising avoids oil gas outwards to spray; When oil cylinder stretches out, when hydraulic oil gets into oil cylinder, gas volume increases in the fuel tank, pressure reduces, and presses in the fuel tank that stores during oil return to be released, and need not to replenish air through ambient atmosphere, can avoid hydraulic oil to be polluted.
To sum up, the utility model pressurize hydraulic oil container makes fuel tank and ambient atmosphere completely cut off, and air exchange does not take place, and has avoided oil gas outwards ejection and air entering fuel tank pollution hydraulic oil, and is easy to use, has practicability.
The above is merely the utility model preferred embodiment; Be not thus the restriction the utility model claim; So the equivalent structure that all utilization the utility model specifications and diagramatic content have been done changes, and all is included in the protection domain of the utility model.
Claims (4)
1. a pressurize hydraulic oil container comprises casing, is provided with filter core assembly in the casing; Be provided with inhalation valve at said casing top, said inhalation valve comprises valve body, and said valve body has hollow cavity; The bottom is provided with valve seat; Valve rod passes from said hollow cavity, on said valve body, also is provided with filter core, and said filter core is communicated with said hollow cavity through the duct of being located on the said hollow cavity inwall; In said hollow cavity, on the said valve rod, be with exhaust spring; On said valve seat, be provided with the air inlet spring; It is characterized in that; Said inhalation valve is not exhaust inhalation valve, and the said exhaust spring of choosing satisfies makes the cracking pressure of said exhaust spring be higher than the requirement of said hydraulic oil container maximum internal pressure.
2. pressurize hydraulic oil container as claimed in claim 1 is characterized in that, said filter core assembly comprises oil suction filter core assembly and oil return filter core assembly.
3. according to claim 1 or claim 2 pressurize hydraulic oil container is characterized in that said filter core is the annulus bodily form, is set on the said valve body.
4. pressurize hydraulic oil container as claimed in claim 1 is characterized in that, the cracking pressure of said exhaust spring is 0.05MPa.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220059951 CN202520671U (en) | 2012-02-23 | 2012-02-23 | Pressure-maintaining hydraulic oil container |
| PCT/CN2012/085822 WO2013123794A1 (en) | 2012-02-23 | 2012-12-04 | Pressure-maintained hydraulic oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220059951 CN202520671U (en) | 2012-02-23 | 2012-02-23 | Pressure-maintaining hydraulic oil container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202520671U true CN202520671U (en) | 2012-11-07 |
Family
ID=47103623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220059951 Expired - Fee Related CN202520671U (en) | 2012-02-23 | 2012-02-23 | Pressure-maintaining hydraulic oil container |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202520671U (en) |
| WO (1) | WO2013123794A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013123794A1 (en) * | 2012-02-23 | 2013-08-29 | 湖南三一智能控制设备有限公司 | Pressure-maintained hydraulic oil tank |
| CN103334989A (en) * | 2013-07-08 | 2013-10-02 | 三一矿机有限公司 | Hydraulic pressure oil tank interior pressure control system and mining dump vehicle |
| EP3165800A1 (en) * | 2015-11-03 | 2017-05-10 | Mahle Industriefiltration GmbH | Pressure equalising device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026908B (en) * | 2018-08-31 | 2022-02-08 | 浙江车夫建筑装饰工程有限公司 | Hydraulic pressure station for municipal works |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3249904B2 (en) * | 1995-10-24 | 2002-01-28 | 日立建機株式会社 | Air breather for hydraulic oil tank |
| CN2413112Y (en) * | 2000-03-21 | 2001-01-03 | 昌河飞机工业（集团）有限责任公司 | Fuel tank respiratory cover |
| JP2004360769A (en) * | 2003-06-03 | 2004-12-24 | Toyota Industries Corp | Breather device for hydraulic oil tank for forklift |
| ATE531592T1 (en) * | 2008-05-21 | 2011-11-15 | Parker Hannifin Corp | BREATHER WITH HYDRAULIC FLUID SYSTEM WITH INDEPENDENT INLET/OUTLET FLOW PATHS |
| CN102116325A (en) * | 2009-12-30 | 2011-07-06 | 斗山工程机械（中国）有限公司 | Breather of hydraulic oil tank, and construction machine |
| CN201713850U (en) * | 2010-02-03 | 2011-01-19 | 浙江濠泰重工制造有限公司 | Self-breathing tank cap |
| CN201866354U (en) * | 2010-11-23 | 2011-06-15 | 三一重机有限公司 | Breather valve |
| CN202520671U (en) * | 2012-02-23 | 2012-11-07 | 三一重机有限公司 | Pressure-maintaining hydraulic oil container |
-
2012
- 2012-02-23 CN CN 201220059951 patent/CN202520671U/en not_active Expired - Fee Related
- 2012-12-04 WO PCT/CN2012/085822 patent/WO2013123794A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013123794A1 (en) * | 2012-02-23 | 2013-08-29 | 湖南三一智能控制设备有限公司 | Pressure-maintained hydraulic oil tank |
| CN103334989A (en) * | 2013-07-08 | 2013-10-02 | 三一矿机有限公司 | Hydraulic pressure oil tank interior pressure control system and mining dump vehicle |
| EP3165800A1 (en) * | 2015-11-03 | 2017-05-10 | Mahle Industriefiltration GmbH | Pressure equalising device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013123794A1 (en) | 2013-08-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20150223 |
|
| EXPY | Termination of patent right or utility model |