CN202971431U - Bypass filtration system - Google Patents
Bypass filtration system Download PDFInfo
- Publication number
- CN202971431U CN202971431U CN 201220672402 CN201220672402U CN202971431U CN 202971431 U CN202971431 U CN 202971431U CN 201220672402 CN201220672402 CN 201220672402 CN 201220672402 U CN201220672402 U CN 201220672402U CN 202971431 U CN202971431 U CN 202971431U
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- filter
- oil
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- hydraulic
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Abstract
Provided is a bypass filtration system. A guide operating valve is installed between an hydraulic oil tank and a guide pump, the guide pump is connected with a main pump and an oil absorption filter, the oil absorption filter is installed between the hydraulic oil tank and the main pump, a check valve is installed between the main pump and a reversing valve, an executive component is connected on the reversing valve, a counterbalance valve is installed between the reversing valve and a main oil return filter, and the main oil return filter is connected with the hydraulic oil tank. The bypass filtration system is connected with a high-precision bypass filter with a pressure-reducing valve in parallel on any one main oil circuit of a working oil circuit, a main oil return oil circuit or a guide control oil circuit. The bypass filtration system can effectively filter particulate matters and moisture in hydraulic oil, improves cleanliness of the hydraulic oil, avoids risk of using a high-pressure filter, prolongs replacement periods of the hydraulic oil, prolongs service life of hydraulic components, and reduces maintenance cost of a hydraulic system.
Description
Technical field
The utility model relates to a kind of by-passing filter system, and the cleanliness of hydraulic oil that is applied to hydraulic system filters, and belongs to the cleanliness of hydraulic oil technical field.
Background technique
In general hydraulic system, on the main oil circuit of hydraulic system, the return filter that a full flow passes through is installed.Due to the restriction that is subject to flow, return oil pressure, the size of grain that return filter filters generally is not less than 10 μ, the too high meeting of return filter precision causes return pressure excessive, reduce system works efficient, too low can causing again of return filter precision contained large-sized particulate pollutant in hydraulic oil, affect the life-span of hydraulic element.Install a highi degree of accuracy bypass strainer additional in working connection, due to the impact that is stressed, the oil purifier that can only use high pressure, full flow to pass through at high-pressure oil passage.In the hydraulic system of high pressure, large flow, filter high-pressure oil passage and must install the high-pressure high-flow oil purifier additional.The high-pressure high-flow oil purifier is bulky, expensive not only, and owing to bearing high pressure, also there is certain danger in the oil purifier lost of life after the oil purifier obstruction.
The model utility content
The purpose of this utility model is to provide a kind of by-passing filter system, do not improving return pressure, do not reducing under the prerequisite of hydraulic system efficient, can use low-pressure filter filtered fluid force feed in the arbitrary working connection of hydraulic system, avoid using the danger of high pressure filter, improve cleanliness of hydraulic oil, extend the hydraulic oil replacement cycle, extend hydraulic element working life.
The utility model realizes that the technological scheme that above-mentioned purpose is taked is: a kind of by-passing filter system comprises hydraulic oil container, oil absorption filter, pioneer pump, main pump, pilot control valve, one-way valve, selector valve, executive component, main return filter and back pressure valve; The pilot control valve is arranged between hydraulic oil container and pioneer pump, pioneer pump is connected with oil absorption filter with main pump, oil absorption filter is arranged between hydraulic oil container and main pump, one-way valve is arranged between main pump and selector valve, executive component is connected on selector valve, back pressure valve is arranged between selector valve and main return filter, and main return filter is connected with hydraulic oil container; Be parallel with one with the highi degree of accuracy bypass strainer of reduction valve on arbitrary working connection of described by-passing filter system in working oil path, main oil return circuit or pilot control oil circuit.
The utlity model has following beneficial effect:
(1) be parallel with one with the highi degree of accuracy bypass strainer of reduction valve on arbitrary working connection of the utility model in working oil path, main oil return circuit or pilot control oil circuit, effectively particulate matter and the moisture in the filtered fluid force feed, improve cleanliness of hydraulic oil greatly.Because reduction valve has been set outlet pressure, so what flow to oil purifier is all low-pressure hydraulic oil, therefore can use low-pressure filter filtered fluid force feed on all working connections of hydraulic system, avoided using the danger of high pressure filter.
(2) the utility model can extend the hydraulic oil replacement cycle, extends hydraulic element working life, reduces the maintenance cost of hydraulic system, has good economic benefit and social benefit.
Description of drawings
Fig. 1 is the structure principle chart of by-passing filter described in the utility model system.
Reference character is: 1. hydraulic oil container, 2. bypass strainer, 3. oil absorption filter, 4. pioneer pump, 5. main pump, 6. pilot control valve, 7. one-way valve, 8. selector valve, 9. executive component, 10. main return filter, 11. back pressure valves.
Embodiment
As shown in Figure 1, a kind of by-passing filter system comprises hydraulic oil container 1, bypass strainer 2, oil absorption filter 3, pioneer pump 4, main pump 5, pilot control valve 6, one-way valve 7, selector valve 8, executive component 9, main return filter 10 and back pressure valve 11.
Pilot control valve 6 is arranged between hydraulic oil container 1 and pioneer pump 4, pioneer pump 4 is connected with oil absorption filter with main pump 5 and is connected, oil absorption filter 3 is arranged between hydraulic oil container 1 and main pump 5, one-way valve 7 is arranged between main pump 5 and selector valve 8, executive component 9 is connected on selector valve 8, back pressure valve 11 is arranged between selector valve 8 and main return filter 10, and main return filter 10 is connected with hydraulic oil container 1; Be parallel with one with the highi degree of accuracy bypass strainer 2 of reduction valve on arbitrary working connection of described by-passing filter system in working oil path, main oil return circuit or pilot control oil circuit.
Described highi degree of accuracy bypass strainer 2 flows with the reduction valve 2L/min that only has an appointment can ignore on the impact of hydraulic system.Reach 5 μ and below 5 μ with the filter precision of the highi degree of accuracy bypass strainer 2 of reduction valve, and part moisture in can the filtered fluid force feed, thereby effectively reduce quantity and the water content of large-size particle pollutant in system.Due to bypass strainer with reduction valve, therefore bypass strainer does not need to bear high pressure, can be arranged on very easily on the high and low pressure oil circuit in hydraulic system, also avoided selecting the danger of high pressure filter in high-pressure oil passage, thereby realized to adopt low-pressure filter at the high low pressure oil circuit.
Claims (2)
1. a by-passing filter system, comprise hydraulic oil container, oil absorption filter, pioneer pump, main pump, pilot control valve, one-way valve, selector valve, executive component, main return filter and back pressure valve; The pilot control valve is arranged between hydraulic oil container and pioneer pump, pioneer pump is connected with oil absorption filter with main pump, oil absorption filter is arranged between hydraulic oil container and main pump, one-way valve is arranged between main pump and selector valve, executive component is connected on selector valve, back pressure valve is arranged between selector valve and main return filter, and main return filter is connected with hydraulic oil container; It is characterized in that, be parallel with one with the highi degree of accuracy bypass strainer of reduction valve on arbitrary working connection of described by-passing filter system in working oil path, main oil return circuit or pilot control oil circuit.
2. by-passing filter according to claim 1 system, is characterized in that, the filter precision of described highi degree of accuracy bypass strainer with reduction valve is 5 μ and below 5 μ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220672402 CN202971431U (en) | 2012-12-07 | 2012-12-07 | Bypass filtration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220672402 CN202971431U (en) | 2012-12-07 | 2012-12-07 | Bypass filtration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971431U true CN202971431U (en) | 2013-06-05 |
Family
ID=48512515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220672402 Expired - Fee Related CN202971431U (en) | 2012-12-07 | 2012-12-07 | Bypass filtration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202971431U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438055A (en) * | 2013-09-06 | 2013-12-11 | 四川万冠机电技术有限公司 | On-line cleaning machine of large-sized hydraulic equipment |
| CN109372810A (en) * | 2018-11-14 | 2019-02-22 | 广州宝力特液压密封有限公司 | A kind of big flow squeezing machine hydraulic system |
| CN113027869A (en) * | 2021-03-08 | 2021-06-25 | 潍柴雷沃重工股份有限公司 | Oil suction and return filtering system and method and tractor |
-
2012
- 2012-12-07 CN CN 201220672402 patent/CN202971431U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438055A (en) * | 2013-09-06 | 2013-12-11 | 四川万冠机电技术有限公司 | On-line cleaning machine of large-sized hydraulic equipment |
| CN103438055B (en) * | 2013-09-06 | 2015-09-09 | 四川万冠机电技术有限公司 | Large Hydraulic Equipment on-line cleaning machine |
| CN109372810A (en) * | 2018-11-14 | 2019-02-22 | 广州宝力特液压密封有限公司 | A kind of big flow squeezing machine hydraulic system |
| CN113027869A (en) * | 2021-03-08 | 2021-06-25 | 潍柴雷沃重工股份有限公司 | Oil suction and return filtering system and method and tractor |
| CN113027869B (en) * | 2021-03-08 | 2023-03-14 | 潍柴雷沃智慧农业科技股份有限公司 | Oil suction and return filtering system and method and tractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YUCHAI PILE-DRIVING (CHANGZHOU) CO., LTD. Free format text: FORMER OWNER: GUANGXI YUCHAI HEAVY INDUSTRY COMPANY LIMITED Effective date: 20150318 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 537005 YULIN, GUANGXI ZHUANG AUTONOMOUS REGION TO: 213167 CHANGZHOU, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150318 Address after: 213167, No. 506, South Road, Wujin hi tech Industrial Development Zone, Jiangsu, Changzhou Patentee after: Yuchai Pile-Driving (Changzhou) Co., Ltd. Address before: 537005 the Guangxi Zhuang Autonomous Region Yulin Lu Chuan County Yuchai Engineering Machinery Industrial Zone Patentee before: Guangxi Yuchai Heavy Industry Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20151207 |
|
| EXPY | Termination of patent right or utility model |