CN202768539U - By-pass filtering apparatus ensuring cleanliness of heading machine hydraulic oil - Google Patents
By-pass filtering apparatus ensuring cleanliness of heading machine hydraulic oil Download PDFInfo
- Publication number
- CN202768539U CN202768539U CN 201220324177 CN201220324177U CN202768539U CN 202768539 U CN202768539 U CN 202768539U CN 201220324177 CN201220324177 CN 201220324177 CN 201220324177 U CN201220324177 U CN 201220324177U CN 202768539 U CN202768539 U CN 202768539U
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- oil
- oil circuit
- hydraulic oil
- pass filtering
- filtering apparatus
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Abstract
The utility model discloses a by-pass filtering apparatus ensuring cleanliness of heading machine hydraulic oil, and belongs to the technical field of heading machine hydraulic oil cleaning. The by-pass filtering apparatus comprises a main oil circuit and a protective oil circuit, a speed control valve and a filter element are connected on the main oil circuit in series, and an oil inlet of the main oil circuit is communicated with an oil outlet of a variable pump. An overflow valve is connected on the protective oil circuit in series, an oil inlet of the protective oil circuit is communicated with an oil inlet of the filter element, and an oil outlet of the protective oil circuit is connected with a hydraulic oil tank. The by-pass filtering apparatus ensuring cleanliness of the heading machine hydraulic oil has the advantages of solving the problem that a plurality of minute pollutants cannot be removed by a full flow oil absorption filter and an oil return filter, ensuring cleanliness of the heading machine hydraulic oil, effectively reducing system failures, protecting hydraulic components, and prolonging service life of the hydraulic oil. The speed control valve is mounted on the main oil circuit, continuous and stable flow is achieved, a pressure switch mounted on the protective oil circuit can send out control signals when the filter element is blogged so as to remind a worker to replace the filter element in tine, and effectiveness and safety of the by-pass filtering apparatus are ensured.
Description
Technical field
The utility model is a kind of bypass filtrating equipment that guarantees the development machine cleanliness of hydraulic oil specifically, belongs to development machine cleanliness of hydraulic oil technical field.
Background technique
Pollution in the hydraulic system is the main cause that causes hydraulic system fault, because the development machine operating mode is abominable, hydraulic oil is easy to be polluted, and the fault that causes thus is a lot, as: the spool wearing and tearing, stuck etc.Existing tunneling machine hydraulic system is adoption rate valve, servovalve etc. all, its turbidity test to fluid require higher, and the full flow oil absorption filter in the system and return filter are bad to a lot of fine pollutant filtering effects, therefore only rely on full flow oil absorption filter and return filter can't guarantee the turbidity test of hydraulic oil, can not solve the fault that causes owing to oil contamination fully.
Summary of the invention
Problem for above-mentioned prior art existence; the utility model provides a kind of bypass filtrating equipment that guarantees the development machine cleanliness of hydraulic oil; solved a lot of fine pollutant that full flow oil absorption filter and return filter can't be removed; guarantee cleanliness of hydraulic oil, effectively reduce the system failure; protection hydraulic element, and the working life of prolongation hydraulic oil.
To achieve these goals, the technical solution adopted in the utility model is: the bypass filtrating equipment of this assurance development machine cleanliness of hydraulic oil comprises working connection and protection oil circuit; Be serially connected with series flow control valve and filter core on the described working connection, the filler opening of working connection is communicated with the oil outlet of variable displacement pump; Be serially connected with relief valve on the described protection oil circuit, the filler opening of protection oil circuit is communicated with the filler opening of filter core, and protection oil circuit oil outlet connects hydraulic oil container;
Further, be serially connected with pressure switch on the protection oil circuit.
The beneficial effects of the utility model are: this device solves a lot of fine pollutant that can't remove of full flow oil absorption filter and return filter; guaranteed cleanliness of hydraulic oil; effectively reduce the system failure, protection hydraulic element, the working life of prolongation hydraulic oil.Series flow control valve is installed on the working connection, can realizes continuing of flow, stable; The pressure switch that protection is installed on the oil circuit can be sent control signal when filter core stops up, the prompting staff is renew cartridge more in time, has guaranteed validity and the Security of this device.
Description of drawings
Fig. 1 is the utility model overall structure schematic diagram.
Among the figure: 2, series flow control valve, 3, relief valve, 4, filter core, 5, pressure switch, 6, hydraulic oil container, 7, variable displacement pump.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, the bypass filtrating equipment of this assurance development machine cleanliness of hydraulic oil is comprised of working connection and protection oil circuit; Be serially connected with series flow control valve 2 and filter core 4 on the described working connection, the filler opening of working connection is communicated with the oil outlet of variable displacement pump 7; Be serially connected with relief valve 3 on the described protection oil circuit, the filler opening of protection oil circuit is communicated with the filler opening of filter core 4, and protection oil circuit oil outlet connects hydraulic oil container 6.
Be serially connected with pressure switch 5 on the described protection oil circuit, when filter core stops up, can send control signal, remind in time renew cartridge more of staff, guaranteed validity and the Security of this device.
During work, hydraulic oil is from the oil outlet of variable displacement pump 7, be linked into the oil inlet P 1 of this device, be serially connected with series flow control valve 2 and filter core 4 on the working connection, the oil outlet of working connection connects hydraulic oil container 6, ensure stable fluid through filter core 4, by progressively, continuous circulation makes the fluid in the fuel tank reach whole filtrations.
The filler opening of protection oil circuit is communicated with the filler opening of filter core 4; the protection oil circuit is serially connected with relief valve 3; protection oil circuit oil outlet connects hydraulic oil container 6; when filter core 4 stops up; relief valve 3 is opened, and working connection fluid flows back to hydraulic oil container 6 through relief valve 3, and pressure switch 5 is sent control signal simultaneously; the prompting changing filter core has guaranteed validity and the Security of this device.
Claims (2)
1. a bypass filtrating equipment that guarantees the development machine cleanliness of hydraulic oil is characterized in that, comprises working connection and protection oil circuit; Be serially connected with series flow control valve (2) and filter core (4) on the described working connection, the filler opening of working connection is communicated with the oil outlet of variable displacement pump (7); Be serially connected with relief valve (3) on the described protection oil circuit, the filler opening of protection oil circuit is communicated with the filler opening of filter core (4), and protection oil circuit oil outlet connects hydraulic oil container (6).
2. a kind of bypass filtrating equipment that guarantees the development machine cleanliness of hydraulic oil according to claim 1 is characterized in that, is serially connected with pressure switch (5) on the described protection oil circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220324177 CN202768539U (en) | 2012-07-05 | 2012-07-05 | By-pass filtering apparatus ensuring cleanliness of heading machine hydraulic oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220324177 CN202768539U (en) | 2012-07-05 | 2012-07-05 | By-pass filtering apparatus ensuring cleanliness of heading machine hydraulic oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202768539U true CN202768539U (en) | 2013-03-06 |
Family
ID=47775119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220324177 Expired - Lifetime CN202768539U (en) | 2012-07-05 | 2012-07-05 | By-pass filtering apparatus ensuring cleanliness of heading machine hydraulic oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202768539U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174704A (en) * | 2013-03-29 | 2013-06-26 | 中联重科股份有限公司渭南分公司 | Hydraulic oil filtering system and hydraulic excavator |
| 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 |
| CN103883590A (en) * | 2014-04-15 | 2014-06-25 | 山推工程机械股份有限公司 | Bulldozer and hydraulic system thereof |
| CN104454796A (en) * | 2014-11-02 | 2015-03-25 | 中冶东方工程技术有限公司 | Oil supplementation system |
| CN108622826A (en) * | 2018-07-23 | 2018-10-09 | 杭叉集团股份有限公司 | Prevent the reach truck hydraulic system that door frame slides back and forth |
| CN109538580A (en) * | 2019-01-24 | 2019-03-29 | 江苏徐工工程机械研究院有限公司 | Hydraulic oil return filtering system and double-wheel slot milling machine |
-
2012
- 2012-07-05 CN CN 201220324177 patent/CN202768539U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174704A (en) * | 2013-03-29 | 2013-06-26 | 中联重科股份有限公司渭南分公司 | Hydraulic oil filtering system and hydraulic excavator |
| CN103174704B (en) * | 2013-03-29 | 2016-02-17 | 中联重科股份有限公司渭南分公司 | hydraulic oil filtering system and hydraulic excavator |
| 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 |
| CN103883590A (en) * | 2014-04-15 | 2014-06-25 | 山推工程机械股份有限公司 | Bulldozer and hydraulic system thereof |
| CN104454796A (en) * | 2014-11-02 | 2015-03-25 | 中冶东方工程技术有限公司 | Oil supplementation system |
| CN108622826A (en) * | 2018-07-23 | 2018-10-09 | 杭叉集团股份有限公司 | Prevent the reach truck hydraulic system that door frame slides back and forth |
| CN108622826B (en) * | 2018-07-23 | 2023-11-28 | 杭叉集团股份有限公司 | Forward type forklift hydraulic system capable of preventing front and back sliding of portal frame |
| CN109538580A (en) * | 2019-01-24 | 2019-03-29 | 江苏徐工工程机械研究院有限公司 | Hydraulic oil return filtering system and double-wheel slot milling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |
|
| CX01 | Expiry of patent term |