CN2663709Y - Extracorporeal circulation and filtration device of loader hydraulic system - Google Patents
Extracorporeal circulation and filtration device of loader hydraulic system Download PDFInfo
- Publication number
- CN2663709Y CN2663709Y CN 200320121399 CN200320121399U CN2663709Y CN 2663709 Y CN2663709 Y CN 2663709Y CN 200320121399 CN200320121399 CN 200320121399 CN 200320121399 U CN200320121399 U CN 200320121399U CN 2663709 Y CN2663709 Y CN 2663709Y
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- oil
- filter
- loader
- filter core
- outlet
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Abstract
The utility model discloses an extracorporeal circulation and filtration device of loader hydraulic system, which comprises an oil box of a loader hydraulic system and a pressure increase pump for pumping the hydraulic oil in the oil box. The outlet of the pressure increase pump is connected with a main pipeline providing hydraulic oil for a loader and a bypass pipeline which is provided with an oil inlet disconnecting valve, wherein, an oil outlet of the oil inlet disconnecting valve is communicated with an oil inlet of a filter. An oil outlet of the filter is connected with an oil outlet disconnecting valve. The oil outlet of the oil outlet disconnecting valve is communicated with the oil box. A filter element of the filter is a three-section type filter element comprising a coarse filter layer, a semi-refined filter layer and a refined filter layer. With the structure, the utility model can use the motion of the loader to realize effective filter for the hydraulic oil of the loader continuously. The extracorporeal circulation and filtration device of loader hydraulic system has small volume of the filter element, good oil filtering effect and long using cycle of the filter element, which avoids stopping for detachment in changing the filter element and saves cost of changing oil.
Description
Technical field
The utility model belongs to the hydraulics field, particularly relates to a kind of loader hydraulic system extracorporal circulatory system filtrating equipment.
Background technique
The hydraulic system of loader is a pith of loader, act of operation during loader work is finished by hydraulic system, in the hydraulic machinery fault, be because the pollution and the oxidation of oil cause more than 80 percent, the hydraulic oil pollution owner will comprise metallic dust, rubber, carbon slag, moisture, foreign material etc., and wherein metallic dust is produced because of friction by cylinder, pump, valve, pipeline; Rubber is the overburden of seal ring, oil pipe etc.; The carbon slag is produced by high temperature; Moisture is to be splashed into by condensed water and air setting water that water leakage of cooler, altitude temperature difference effect produce, and fuel tank cap, air hole have crack etc. to produce; Foreign material are the extraneous rubber powder that enters, dust etc.These hydraulic oil pollution things have produced bad influence to the work of hydraulic system, can reduce the greasy property of oil as impurity, make element accelerated wear test and valve element deadlocked easily, stuck and cause the system failure; Moisture can reduce the oil film toughness, makes the oil lubrication decreased performance; Moisture combines meeting and quickens the oil plant oxidation with body refuse.For this reason, usually need in hydraulic system, add filtrating equipment, it comprises the filter core that is contained in the fuel-tank outlet place oil plant filtrating equipment of prior art, so just can make that the oil that comes out from fuel tank can be comparatively clean, but just because this kind filter type is the outlet port that filter core is contained in fuel tank, the one, make that the filter core volume is bigger, and filter core is often to need the product of replacing, and then causes the rising of user cost; The 2nd, the residing position of filter core directly is subjected to the impact of suction booster supercharging, makes the life cycle of filter core shorten greatly; The 3rd, more during renew cartridge, need to shut down and dismantle fuel tank, and the oil plant in the fuel tank will be drained into the filter core place, so that exchange filter core for, like this, influenced the work of loader on the one hand, can cause the waste of oil plant on the other hand.
The model utility content
The purpose of this utility model is to overcome the deficiency of prior art, provides that a kind of filter core volume is little, oil strain is effective, the filter core life cycle is long, more need not shut down dismounting during renew cartridge and can save the loader hydraulic system extracorporal circulatory system filtrating equipment of the cost of changing oil.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of loader hydraulic system extracorporal circulatory system filtrating equipment, comprise the fuel tank of loader hydraulic system and the suction booster that hydraulic oil in the fuel tank can be pumped, the suction booster outlet is connected to the main pipe that hydraulic oil is provided to loader work, an and bypass pipeline, be connected on the bypass duct into oil cut-off valve, going into the oil outlet of oil cut-off valve and the filler opening of filter is connected, the oil outlet of filter with go out oil cut-off valve and join, the oil outlet and the fuel tank that go out oil cut-off valve are connected.
Described filter comprises a housing, and its filler opening, oil outlet are located at the bottom of housing, between filler opening in housing and the oil outlet filter core is housed.
Described filter core is loaded on the top in the housing, and the middle part of filter core is provided with oil pipe, and the bottom and the filler opening of oil pipe are connected, and the top of oil pipe communicates in the upper-end surface of filter core.
Described filter core is the 3 stops filter core, and the 3 stops filter core is provided with coarse filtration layer, half filter bed of essence, filter bed of essence downwards successively by the top.
Between described filter filler opening and the filter core flow control valve is housed also, the inlet of flow control valve and filter filler opening are connected, and the outlet and the oil inlet pipe of flow control valve are connected.
In the using process, bypass duct and supercharging delivery side of pump are connected, the oil outlet that will go out oil cut-off valve feeds fuel tank, after loader hydraulic system is started working, hydraulic oil in the fuel tank is pressurized pump and pumps, enter the pipeline of hydraulic system, meanwhile, also there is a fraction of hydraulic oil to flow into bypass duct, going into oil cut-off valve and going out under the state that oil cut-off valve opens, the hydraulic oil of by-passing pipeline, enter filter by going into oil cut-off valve, when entering filter, be that filler opening by filter enters, feed the oil pipe in the middle part of the filter core through flow control valve, here, can regulate the flow that enters filter by flow control valve, hydraulic oil is sent to the top of filter after by oil pipe, be on the upper-end surface of filter core, then hydraulic oil can pass through the 3 stops filter core, promptly pass through the coarse filtration layer downwards successively by the top, half filter bed of essence, filter bed of essence, the hydraulic oil of infiltrate filter core is got back to fuel tank again by the oil outlet of filter and through going out oil cut-off valve, hydraulic oil through bypass channel will be filtered totally like this, and loader hydraulic system works without cessation, then always there is part hydraulic oil to be filtered,, makes the interior hydraulic oil of fuel tank reach the effect of cleaning by so constantly circulation by bypass.After using a period of time, in the time of need carrying out the filter core replacing to filter, only need to go into oil cut-off valve and go out oil cut-off valve to close, make the hydraulic oil in the work can not enter bypass channel, then filter can be taken apart, take out old filter core, and replace with new filter core, finish changing filter core after, open into oil cut-off valve and go out oil cut-off valve, then bypass channel can feed hydraulic oil again, and the hydraulic oil that feeds bypass channel continues to be filtered, and whole system operation hydraulic oil constantly is filtered.
The beneficial effects of the utility model are, owing to adopted in the suction booster outlet port of hydraulic system and installed a bypass pipeline additional, and on bypass duct, be connected to into oil cut-off valve, to go into the oil outlet of oil cut-off valve and the filler opening of filter is connected, the oil outlet of filter with go out oil cut-off valve and join, the oil outlet and the fuel tank that go out oil cut-off valve are connected, made full use of the power of loader itself like this, need not increase under the extra power source situation, just continuously loader hydraulic oil effectively filtered; Owing to adopted bypass duct, make that the hydraulic oil quantity that at every turn enters filter is few, the filter core volume just can be done lessly like this, and can make the life cycle lengthening of filter core, greatly reduces the user cost of filter core; Owing to adopted bypass duct, and on bypass duct, install oil cut-off valve and gone out oil cut-off valve, need not shut down dismounting in the time of then can being implemented in more renew cartridge, also the hydraulic oil in the fuel tank need not be discharged, both guarantee the continuity of work, can save the cost of changing oil again, reduced the loss of hydraulic oil; Owing in filter, installed flow control valve,, guaranteed that the hydraulic system of loader itself is unaffected by the suitable filtering traffic of flow control valve regulation; Owing to adopted the 3 stops filter core, made filter precision can reach 0.1 μ.After adopting the utility model, hydraulic oil disposable filtering turbidity test can reach NAS6～7 grade; Can prolong the hydraulic oil life-span reaches 5～8 times; Prolong the oil circuit life-span more than 3 times, prolong the hydraulic element life-span more than 6 times, prolong between equipment rebuilding and cut off more than 2.5 times; Improve the reliability of loader hydraulic system, reduced rate of fault; Saved user's cost of changing oil.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described in further detail; But a kind of loader hydraulic system extracorporal circulatory system filtrating equipment of the present utility model is not limited to embodiment.
Fig. 1 is a structure block diagram of the present utility model;
Fig. 2 is the tectonic maps of the utility model filter.
Embodiment
Shown in accompanying drawing, a kind of loader hydraulic system extracorporal circulatory system filtrating equipment of the present utility model, comprise the fuel tank 1 of loader hydraulic system and the suction booster 11 that hydraulic oil in the fuel tank 1 can be pumped, suction booster 11 outlets are connected to the main pipe that hydraulic oil is provided to hydraulic work system, an and bypass pipeline, be connected on the bypass duct into oil cut-off valve 21, going into the oil outlet of oil cut-off valve 21 and the filler opening 316 of filter 3 is connected, the oil outlet 317 of filter 3 with go out oil cut-off valve 22 and join, the oil outlet and the fuel tank 1 that go out oil cut-off valve 22 are connected.
Filter 3 comprises a housing, housing is by loam cake 305, body 304, base 302 is formed, body 304 connects with base 302 stationary phase, filler opening 316, oil outlet 317 is located at the bottom of housing, housing is electroplated screw 303 by hexagon head and is fixed on the support 301, loam cake 305 is covered mutually with body 304 by connecting screw rod 313 by T word bolt 306 and closes, pad is pressed with U type ring 308 between loam cake 305 and the body 304, be lined with T word bolt pad 307 between T word bolt 306 and the loam cake 305, by T word bolt pad 307, U type ring 308, make the top of filter 3 can reach better seal, front surface at housing base 302 is equipped with pressure gauge 314, one flow control valve 315 is housed in the base 302, the inlet of flow control valve 315 and filter 3 filler openings 316 are connected, the outlet of flow control valve 315 and filter core 309 middle part oil pipes are connected, filter core 309 is contained in the top in the housing, its bottom of oil pipe and the flow control valve 315 at filter core 309 middle parts are connected, the top communicates in the upper-end surface of filter core 309, filter core 309 is the 3 stops filter core, 3 stops filter core 309 is provided with the coarse filtration layer downwards successively by the top, half filter bed of essence, filter bed of essence, be provided with one deck filter screen 311 in the bottom of filter core 309, filter screen 311 reclines mutually with the bottom of filter core 309, filter screen 311, filter core 309 is by the cooperation between T word bolt 306 and the connecting screw rod 313, be fixed between filter screen briquetting 310 and the loam cake 305, a test valve 313 is housed in the outlet port of filter 3.
In the using process, the outlet of bypass duct and suction booster 11 is connected, the oil outlet that will go out oil cut-off valve 22 feeds fuel tank 1, after loader hydraulic system is started working, hydraulic oil in the fuel tank 1 is pressurized pump 11 and pumps, enter the pipeline of hydraulic system, meanwhile, also there is a fraction of hydraulic oil to flow into bypass duct, going into oil cut-off valve 21 and going out under the state that oil cut-off valve 22 opens, the hydraulic oil of by-passing pipeline, enter filter 3 by going into oil cut-off valve 21, when entering filter 3, be that filler opening 316 by filter 3 enters, feed the oil pipe at filter core 309 middle parts through flow control valve 315, here, can regulate the flow that enters filter 3 by flow control valve 315, hydraulic oil is sent to the top of filter 3 after by oil pipe, be on the upper-end surface of filter core 309, then hydraulic oil can pass through the 3 stops filter core, promptly pass through the coarse filtration layer downwards successively by the top, half filter bed of essence, filter bed of essence, the hydraulic oil of infiltrate filter core 309 is got back to fuel tank 1 again by the oil outlet 317 of filter 3 and through going out oil cut-off valve 22, hydraulic oil through bypass channel will be filtered totally like this, and loader hydraulic system works without cessation, then always there is part hydraulic oil to be filtered,, makes fuel tank 1 interior hydraulic oil reach the effect of cleaning by so constantly circulation by bypass.After using a period of time, in the time of need carrying out filter core 309 replacings to filter 3, only need to go into oil cut-off valve 21 and go out oil cut-off valve 22 to close, make the hydraulic oil in the work can not enter bypass channel, then filter 3 can be taken apart, take out old filter core, and replace with new filter core, after finishing changing filter core 309, open into oil cut-off valve 21 and go out oil cut-off valve 22, then bypass channel can feed hydraulic oil again, and the hydraulic oil that feeds bypass channel continues to be filtered, and whole system operation hydraulic oil constantly is filtered totally.
Claims (5)
1. loader hydraulic system extracorporal circulatory system filtrating equipment, comprise the fuel tank of loader hydraulic system and the suction booster that hydraulic oil in the fuel tank can be pumped, the suction booster outlet is connected to the main pipe that hydraulic oil is provided to loader work, it is characterized in that: the suction booster outlet also is connected to a bypass pipeline, be connected on the bypass duct into oil cut-off valve, going into the oil outlet of oil cut-off valve and the filler opening of filter is connected, the oil outlet of filter with go out oil cut-off valve and join, the oil outlet and the fuel tank that go out oil cut-off valve are connected.
2. a kind of loader hydraulic system extracorporal circulatory system filtrating equipment according to claim 1, it is characterized in that: described filter comprises a housing, its filler opening, oil outlet are located at the bottom of housing, between filler opening in housing and the oil outlet filter core are housed.
3. a kind of loader hydraulic system extracorporal circulatory system filtrating equipment according to claim 2, it is characterized in that: described filter core is loaded on the top in the housing, the middle part of filter core is provided with oil pipe, and the bottom and the filler opening of oil pipe are connected, and the top of oil pipe communicates in the upper-end surface of filter core.
4. a kind of loader hydraulic system extracorporal circulatory system filtrating equipment according to claim 2, it is characterized in that: described filter core is the 3 stops filter core, the 3 stops filter core is provided with coarse filtration layer, half filter bed of essence, filter bed of essence downwards successively by the top.
5. a kind of loader hydraulic system extracorporal circulatory system filtrating equipment according to claim 1 and 2, it is characterized in that: between described filter filler opening and the filter core flow control valve is housed also, the inlet of flow control valve and filter filler opening are connected, and the outlet and the oil inlet pipe of flow control valve are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320121399 CN2663709Y (en) | 2003-12-17 | 2003-12-17 | Extracorporeal circulation and filtration device of loader hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320121399 CN2663709Y (en) | 2003-12-17 | 2003-12-17 | Extracorporeal circulation and filtration device of loader hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2663709Y true CN2663709Y (en) | 2004-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320121399 Expired - Lifetime CN2663709Y (en) | 2003-12-17 | 2003-12-17 | Extracorporeal circulation and filtration device of loader hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2663709Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132036A (en) * | 2014-07-24 | 2014-11-05 | 国家电网公司 | Oil filtering device of hydraulic mechanism |
| CN106286199A (en) * | 2015-06-11 | 2017-01-04 | 哈尔滨飞机工业集团有限责任公司 | A kind of hydraulic pressure voltage supply equipment |
| CN107859088A (en) * | 2017-11-24 | 2018-03-30 | 山推工程机械股份有限公司 | One kind is used for bull-dozer transmitting hydraulic cleaning filtration system and method |
-
2003
- 2003-12-17 CN CN 200320121399 patent/CN2663709Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132036A (en) * | 2014-07-24 | 2014-11-05 | 国家电网公司 | Oil filtering device of hydraulic mechanism |
| CN106286199A (en) * | 2015-06-11 | 2017-01-04 | 哈尔滨飞机工业集团有限责任公司 | A kind of hydraulic pressure voltage supply equipment |
| CN107859088A (en) * | 2017-11-24 | 2018-03-30 | 山推工程机械股份有限公司 | One kind is used for bull-dozer transmitting hydraulic cleaning filtration system and method |
| CN107859088B (en) * | 2017-11-24 | 2020-12-11 | 山推工程机械股份有限公司 | Hydraulic cleaning and filtering system and method for bulldozer transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131217 Granted publication date: 20041215 |