CN203362708U - Excavator hydraulic system with bypass filter device - Google Patents
Excavator hydraulic system with bypass filter device Download PDFInfo
- Publication number
- CN203362708U CN203362708U CN 201320254392 CN201320254392U CN203362708U CN 203362708 U CN203362708 U CN 203362708U CN 201320254392 CN201320254392 CN 201320254392 CN 201320254392 U CN201320254392 U CN 201320254392U CN 203362708 U CN203362708 U CN 203362708U
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- China
- Prior art keywords
- oil
- hydraulic system
- bypass
- excavator
- filter device
- 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
The utility model discloses an excavator hydraulic system with a bypass filter device, and belongs to the field of engineering machinery. The excavator hydraulic system with the bypass filter device overcomes the defect that in the prior art, pollution can be easily caused by metal powder and moisture in oil liquid to hydraulic oil of a hydraulic system. According to the technical scheme, the excavator hydraulic system with the bypass filter device is characterized by comprising a pilot pump, an oil tank and an excavator hydraulic system body, the bypass filter device is arranged between the pilot pump and the hydraulic oil tank in a parallel connection mode, the bypass filter device comprises a throttling valve, an oil filter and an oil-water separator, and the throttling valve, the oil filter and the oil-water separator are connected in series. The excavator hydraulic system with the bypass filter device is mainly applied to an excavator, and is used for achieving the effect that the cleanliness needed by hydraulic oil of the excavator hydraulic system can be kept for a long time.
Description
Technical field
The utility model relates to a kind of filtrating equipment, specifically, relates in particular to a kind of excavator hydraulic system with bypass-filtering device.
Background technique
At present, various metallic dusts and the moisture content in the middle of fluid that the excavator hydraulic element produced between the early stage running-in period after dispatching from the factory are apparent in view to the hydraulic oil pollution in hydraulic system, and now other pollutants such as particulate matter are more, and the system filter core easily stops up.In the middle of the hydraulic system of tradition excavator, be mainly that oil absorption filter and return filter are set between major loop, because user's maintenance work is difficult to reach requirement.Between running-in period, pollution is apparent in view in early days, and filter element life is shorter, and oil cleanliness is not high, can not guarantee for a long time to reach the turbidity test that the system liquid force feed needs, and affects the working efficiency of complete machine.
The model utility content
The utility model is for the problem of above-mentioned digging machine hydraulic system and the deficiency of existence, and a kind of excavator hydraulic system with bypass-filtering device is provided.
The utility model is achieved by the following technical solution: with the excavator hydraulic system of bypass-filtering device, comprise pioneer pump, fuel tank and excavator hydraulic system, be connected in parallel to bypass-filtering device between described pioneer pump and hydraulic oil container, described bypass-filtering device comprises throttle valve, high-precision filter and the oil and water seperator be connected in series.
Preferably be connected with pressure gauge on high-precision filter.
Preferably be connected in parallel to the bypass safety valve between high-precision filter, oil and water seperator.
Compared with prior art, the beneficial effects of the utility model are:
(1) the utility model filtration oil cleanliness is high, can guarantee for a long time to reach the turbidity test that the system liquid force feed needs;
(2) the utility model is simple in structure, installs and uses and change the bypass filter core all very easy;
(3) the utility model can not affect the normal operation of main hydraulic system, can under the condition that meets original system pressure and flow, install and use.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, throttle valve; 2, high-precision filter; 3, pioneer pump; 4, fuel tank; 5, pressure gauge; 6, bypass safety valve; 7, oil and water seperator.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
As shown in Figure 1, excavator hydraulic system working connection with bypass-filtering device comprises pioneer pump 3, fuel tank 4, excavator hydraulic system, a high-precision filtration oil circuit in parallel between working connection starting point pioneer pump and hydraulic oil container, high-precision filtration (impurity screening filter core precision is 3 μ m) by oil circuit in parallel, remove fluid central impurity and moisture, guarantee the turbidity test of hydraulic system oil product.Tee union outlet by pioneer pump 3 outlets connects throttle valve 1 import, throttle valve 1 exports be connected in parallel high-precision filter 2 imports, 6 imports of bypass safety valve, high-precision filter 2 outlets connect oil and water seperator 7 imports, and oil and water seperator 7 outlet bypass safety valve 6 outlets in parallel connect oil sump tank; The external pressure gauge 5 of high-precision filter 2, in using process for measuring filter two ends pressure reduction.Wherein, throttle valve 1 function is to keep pilot pressure and control flow; Bypass safety valve 6 functions are that the protection filter core is avoided compression shock; Pressure gauge 5 functions are to show that according to it pressure determines whether to change the bypass filter core.
Working principle of the present utility model: the throttle valve 1 of flowing through the hydraulic oil pressurization that pioneer pump 3 will suck from hydraulic oil container enters highi degree of accuracy oil purifier 2 and carries out high-precision filtration, fluid after filtration enters oil and water seperator 7 and carries out oil-water separation, and the hydraulic oil after separation flows back to hydraulic oil container 4.
Solve targetedly the excavator hydraulic element by the utility model and produced the pollution problem of hydraulic pressure oil product with the main frame rear early stage break-in of dispatching from the factory; And realized the function of the central oil-water separation of hydraulic system.Hydraulic oil is maintained to a very high turbidity test grade, to reach the working life that extends hydraulic oil, each hydraulic element of system and complete machine, reduce the shutdown maintenance service time, thereby be reached for the purpose that the user reduces user cost.According to practice, after using the art of this patent, after excavator work 300 hours, through detecting, when now the oil product turbidity test are than factory testing, be significantly improved, improve a lot than the equal model excavator oil product turbidity test that this same time of bypass-filtering device work is not installed, the utlity model has very significant use value.
Claims (3)
1. the excavator hydraulic system with bypass-filtering device, comprise pioneer pump (3), fuel tank (4) and excavator hydraulic system, it is characterized in that: be connected in parallel to bypass-filtering device between described pioneer pump (3) and fuel tank (4), described bypass-filtering device comprises throttle valve (1), high-precision filter (2), the oil and water seperator (7) be connected in series.
2. the excavator hydraulic system with bypass-filtering device according to claim 1, is characterized in that: be connected with pressure gauge (5) on described high-precision filter (2).
3. the excavator hydraulic system with bypass-filtering device according to claim 1, is characterized in that: between described high-precision filter (2) and oil and water seperator (7), be connected in parallel to bypass safety valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320254392 CN203362708U (en) | 2013-05-11 | 2013-05-11 | Excavator hydraulic system with bypass filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320254392 CN203362708U (en) | 2013-05-11 | 2013-05-11 | Excavator hydraulic system with bypass filter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203362708U true CN203362708U (en) | 2013-12-25 |
Family
ID=49810482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320254392 Expired - Fee Related CN203362708U (en) | 2013-05-11 | 2013-05-11 | Excavator hydraulic system with bypass filter device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203362708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244515A (en) * | 2013-05-11 | 2013-08-14 | 山东纳科重工科技有限公司 | Excavator hydraulic system with bypass filtering device |
-
2013
- 2013-05-11 CN CN 201320254392 patent/CN203362708U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244515A (en) * | 2013-05-11 | 2013-08-14 | 山东纳科重工科技有限公司 | Excavator hydraulic system with bypass filtering device |
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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: 20131225 Termination date: 20150511 |
|
| EXPY | Termination of patent right or utility model |