CN104100604A - Device and method for filtering hydraulic oil of forklift - Google Patents
Device and method for filtering hydraulic oil of forklift Download PDFInfo
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- CN104100604A CN104100604A CN201410339932.9A CN201410339932A CN104100604A CN 104100604 A CN104100604 A CN 104100604A CN 201410339932 A CN201410339932 A CN 201410339932A CN 104100604 A CN104100604 A CN 104100604A
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Abstract
The invention provides a device for filtering hydraulic oil of a forklift. The device comprises a slop oil tank, an oil filtering tank, an oil purifying tank, an oil sucking machine, an oil feeding machine and an oil filtering machine unit. The invention also provides a method for filtering the hydraulic oil of the forklift by using the device. The method comprises the following steps of controlling the forklift to run to an oil sucking workstation; enabling a portal of the forklift to ascend, descend and obliquely move in the front-back direction repeatedly; starting the oil sucking machine to suck oil of a hydraulic oil tank of the forklift; sucking the hydraulic oil of the forklift in the slop oil tank; filtering the hydraulic oil of the forklift in the slop oil tank by using a second oil filtering machine and conveying the filtered hydraulic oil to the oil filtering tank; filtering the oil by using a first oil filtering machine and then conveying the oil to the oil purifying tank; running the forklift to an oil feeding workstation after oil suction operation is finished; feeding oil in the hydraulic oil tank of the forklift by using the oil feeding machine; and feeding the filtered hydraulic oil in the oil purifying tank in the hydraulic oil tank of the forklift. The device has the advantages that the filtering time is short, the filtering effect is high, oil suction operation and oil feeding operation can be simultaneously performed on two forklifts, filtering operation can be continuously performed without waiting when the filtering amount is large, and the efficiency is high.
Description
Technical field
The present invention relates to filtration art, be specifically related to a kind of filtrating equipment for fork truck hydraulic oil and filter method thereof.
background technique
Fork truck is as a kind of means of transportation of maneuverability, at harbour, railway, warehouse, goods yard and other items transportation, storage, bringing into play more and more important effect, and the quality of its hydraulic system quality directly affects service behaviour and the utilization efficiency of fork truck.Show according to relevant statistics: hydraulic system fault accounts for 54% of fork truck total failare, and more than 75% hydraulic system fault is relevant with the pollution of hydraulic system, therefore it is particularly important to control the pollution of forklift hydraulic system.
The pollution sources of forklift hydraulic system mainly comprise solid grain contamination, and the reason of output solid grain contamination comprises following a few class: the molding sand in hydraulic pump body, pump case and other elements and pipe, smear metal, welding slag, abrasive material, rust sheet, dust etc. fail thoroughly to remove and cause before assembling is used; During hydraulic work system, the air that the fluid that reciprocating piston rod injects and fuel tank circulate can make dust velveteen etc. enter hydraulic oil; The metal producing in hydraulic work system process and the wear particle of sealing material, the Oil Paint Slag sheet peeling off and the particle coming off from filtering material and fiber also can enter hydraulic oil; Rust sheet after jelly, precipitation and corrosion of metal that hydraulic oil produces because of long-time applied at elevated temperature oxidation deterioration; The staple of accidentally sneaking into during maintenance, fiber, dust etc.
These solid grain contaminations enter in hydraulic jack with hydraulic oil, can accelerate the wearing and tearing of Sealing, and leakage rate strengthens, and cylinder barrel or piston rod are pulled and scrapped; Enter oil adsorption filter and stop up oil adsorption filter, cause air pockets erosion, cause vibration and noise excessive; Enter oil return filter cleaner, stop up oil return filter cleaner, cause system back pressure to increase, oil temperature is too high, operation mechanism's akinesia or move undesired; Enter damping hole, restriction, stop up damping hole, restriction, make spool stuck, cause hydrovalve cannot work or job insecurity; Enter servovalve, the slip surface of spool and valve pocket and the wearing and tearing of throttling seamed edge are strengthened, internal leakage strengthens, and easily makes spool stuck or flow controller is stopped up.
At present, the pollution of hydraulic system is controlled except relating to design, manufacture, here mainly emphasize the links such as installation, use, maintenance, routine servicing and periodic maintenance, only have links is taked to corresponding measure, could effectively control pollution, make the rate of fault of system drop to minimum level.And the pollution of hydraulic oil in hydraulic system is controlled, there is no good way, directly changing hydraulic oil wastes time and energy, and cost is higher.
Summary of the invention
The invention provides a kind of fork truck hydraulic oil filter, solved the regulation of cleanliness of hydraulic oil, and meet large output, the on-the-spot clean and tidy and simple requirement of filter process.
For solving the problems of the technologies described above, the present invention adopts following technological scheme:
A fork truck hydraulic oil filter, comprising: slop tank, canister and the absolute oil tank placed successively; Be arranged on the oil absorption machine of slop tank one side, this oil absorption machine is communicated with slop tank upper end by fuel sucking pipe; Be arranged on the oilling machine of absolute oil tank one side, this oilling machine is communicated with absolute oil tank lower end by oil filling pipe; Be arranged on the oil strain unit of canister one side, this oil strain unit comprises oil filter one and oil filter two, wherein the entrance of oil filter one is communicated with canister by taking over one, the outlet of oil filter one is communicated with canister and absolute oil tank by three-way valve group one, the entrance of oil filter two is communicated with canister and slop tank by three-way valve group two, and the outlet of oil filter two is communicated with canister by taking over two.
Between filter one and filter two, add a canister, play the effect of buffering oil storage, filter one and filter two can carry out repeatedly to the hydraulic oil in canister, continue filter operation within the most of the time, improve greatly filtering effect, and the oil reserve of whole filtrating equipment strengthens, for two fork trucks are carried out respectively to oil suction and refueling operation simultaneously, provide stability more reliably.
Further, the upper and lower end of described slop tank, canister and absolute oil tank is provided with level meter.Level meter is for detection of the liquid level of hydraulic oil in each oil tank, what be positioned at upper end is the highest liquid level, and what be positioned at lower end is minimum liquid level, comes shutoff and the connection of pilot line by the detection of level meter, carry timely and filtered fluid force feed, guarantee the high efficiency of filter process.
Further, the pipe interface place of described slop tank, canister and absolute oil tank is provided with ball valve.It is to be unlikely to hydraulic oil in order to keep in repair to drip on ground that a plurality of interfaces of whole system all assemble ball valve, jointing ball valve is opened at ordinary times, during maintenance, close, also all assemble ball valve in San Ge tank bottom oil discharge pipe, the ball valve at oil discharge pipe place is closed when filtrating equipment uses.
The present invention also provides a kind of fork truck hydraulic oil filtering method of above-mentioned filtrating equipment, comprises the steps,
Step 1: operating fork car travels to oil suction station, and make forklift door frame lifting tilt forward and back motion repeatedly;
Step 2: start oil absorption machine hydraulic oil tank of forklift is carried out to oil suction operation, by fork truck hydraulic oil inspiration slop tank, the fork truck hydraulic oil sucking in slop tank is delivered in canister after oil filter two filters, then is delivered to absolute oil tank after filtering by oil filter one;
Step 3: after oil suction has operated, fork truck is travelled to refueling station, use oilling machine to carry out refueling operation to hydraulic oil tank of forklift, the hydraulic oil after filtering in absolute oil tank is added in hydraulic oil tank of forklift.
Further, when the hydraulic oil oil level in described slop tank is raised to the highest liquid level, be communicated with successively the pipeline between slop tank, oil filter two and canister, the soiling solution force feed in slop tank is delivered in canister after oil filter two filters; When the hydraulic oil oil level in slop tank drops to minimum liquid level, turn-off the pipeline between slop tank and oil filter two.
Further, when the liquid level of described canister drops to minimum liquid level, be communicated with successively the pipeline between slop tank, oil filter two and canister, the soiling solution force feed in slop tank is delivered in canister after oil filter two filters; When the liquid level of canister is raised to the highest liquid level, turn-off the pipeline between slop tank and oil filter two.
Further, when hydraulic oil liquid potential drop is to minimum liquid level in described absolute oil tank, be communicated with successively the pipeline between absolute oil tank, oil filter one and canister, hydraulic oil in canister is delivered in absolute oil tank after oil filter one filters; When the hydraulic oil oil level of absolute oil tank is raised to the highest liquid level, turn-off the pipeline between slop tank and oil filter two.。
Further, also comprise pre-filtration step, before step 1, hydraulic oil is injected to canister, turn-off respectively the pipeline between oil filter one, two and slop tank and absolute oil tank, the hydraulic oil in one, two pairs of canisters of oil filter carries out circulating oil filtering operation.
From above technological scheme, the present invention adopts three oil tanks that are arranged side by side to carry out respectively oil suction, oil strain and refueling operation, filtration time is fast, effective, can carry out oil suction and refueling operation to two fork trucks simultaneously, when filtration operation amount is larger without waiting for, efficiency is high; Whole filter process is simple to operation, and maintenance, neatly without greasy dirt, is convenient in scene, and cleanliness of hydraulic oil can reach 9 class precisions, and fork truck hydraulic oil can Reusability, and cost of production reduces.
Accompanying drawing explanation
Fig. 1 is the structural representation of fork truck hydraulic oil filter of the present invention, and shows and be positioned at oil suction station and refuel two fork trucks of station;
Fig. 2 is the flow chart of fork truck hydraulic oil filtering method of the present invention.
In figure: 100, slop tank, 110, oil absorption machine, 120, fuel sucking pipe, 200, canister, 210, oil strain unit, 211, oil filter one, 212, oil filter two, 220, adapter one, 230, three-way valve group one, 240, three-way valve group two, 250, adapter two, 300, absolute oil tank, 310, oilling machine, 320, oil filling pipe, 400, level meter, 500, fork truck.
Embodiment
Below in conjunction with accompanying drawing, a kind of preferred implementation of the present invention is described in detail.
The invention provides a kind of hydraulic oil filter, this filtrating equipment is mainly used in the hydraulic oil in forklift hydraulic system to filter, and makes the fork truck hydraulic oil can Reusability, has saved greatly cost of production.
As shown in Figure 1, described filtrating equipment comprises slop tank 100, canister 200 and the absolute oil tank 300 being arranged side by side successively, wherein slop tank 100 1 sides are provided with oil absorption machine 110, it is oil suction station herein, fork truck 500 travels to oil suction station, can be by oil absorption machine by the soiling solution force feed sucking-off in hydraulic oil tank of forklift and be delivered in slop tank.Absolute oil tank 300 1 sides are provided with oilling machine 310, and this place, for refueling station, sails oiling station into after fork truck 500 oil suctions have operated, by oilling machine, the clean hydraulic oil in absolute oil tank is injected to empty hydraulic oil container.Canister 200 1 sides are provided with oil strain unit 210, can carry out oil strain operation to fork truck soiling solution force feed, oil strain unit comprises oil filter 1 and oil filter 2 212, two oil filters are close together, can move by being arranged on the upper saw pulley of bottom, the import and export of oil filter are arranged on homonymy, are convenient to install.In oil filter one and two, be provided with oil pump, for the hydraulic power of whole filtrating equipment is provided.
The size of three oil tanks is identical, and corresponding the highest alarm liquid level and the minimum alarm liquid level place of upper and lower end of three oil tanks is provided with level meter 400, and bottom is provided with oil discharge pipe.
Described slop tank 100 and absolute oil tank 300 upper and lower ends are respectively communicated with a flange connecting pipe, wherein the flange connecting pipe of slop tank 100 upper ends and the outlet of oil absorption machine 110 are communicated with by fuel sucking pipe 120, and the flange connecting pipe of absolute oil tank 300 lower ends is communicated with by oil filling pipe 320 with the import of oilling machine 310.The flange connecting pipe position of slop tank 100 and absolute oil tank 300 upper ends is lower than the highest level meter, and the flange connecting pipe position of lower end is lower than minimum liquid level meter.
Described canister 200 upper and lower ends are all communicated with two flange connecting pipes, wherein being positioned at the flange connecting pipe in left side, lower end and the import of oil filter 1 is communicated with by taking over 1, the flange connecting pipe on right side, upper end is communicated with by taking over 2 250 with the outlet of oil filter 2 212, the flange connecting pipe on right side, lower end is communicated with oil filter 2 212 and slop tank 100 by three-way valve group 2 240, and the flange connecting pipe in left side, upper end is communicated with oil filter 1 and absolute oil tank 300 by three-way valve group 1.Three-way valve group 1 and three-way valve group 2 240 all can regulate by the spool in the middle of three-way valve, form respectively that canister is communicated with oil filter one, oil filter one is communicated with absolute oil tank, canister is communicated with oil filter two and oil filter two is communicated with slop tank.
As shown in Figure 2, the present invention also provides a kind of fork truck hydraulic oil filtering method that adopts above-mentioned filtrating equipment, comprise the steps,
Step 1: operating fork car travels to oil suction station, and make forklift door frame lifting tilt forward and back motion repeatedly.
The banking motion of forklift door frame lifting is to handle by the first plate valve in fork truck and the second plate valve, can drive hydraulic oil tank of forklift, through tilting action repeatedly, can make solid grain contamination in soiling solution force feed mix, while carrying out follow-up oil suction operation, solid grain contamination can be carried with hydraulic oil, reduce residual in hydraulic oil tank of forklift of solid grain contamination, improve filtering effect.
Step 2: start oil absorption machine hydraulic oil tank of forklift is carried out to oil suction operation, by fork truck hydraulic oil inspiration slop tank, the fork truck hydraulic oil sucking in slop tank is delivered in canister after oil filter two filters, then is delivered to absolute oil tank after filtering by oil filter one.
When oil suction operates, observe the level meter on slop tank, when level meter shows that hydraulic oil oil level in slop tank is raised to the highest liquid level, the spool of manual tune three-way valve group two, be communicated with successively the pipeline between slop tank, oil filter two and canister, in oil filter two, under the effect of oil pump, the hydraulic oil in slop tank is delivered in canister.When the hydraulic oil oil level in slop tank drops to minimum liquid level, the pipeline that regulating three-way valve group two is turn-offed between slop tank and oil filter two, now canister is communicated with the inlet/outlet of oil filter two, and oil filter two can carry out circulating oil filtering operation to the hydraulic oil in oil filter.
Step 3: after oil suction has operated, fork truck is travelled to refueling station, use oilling machine to carry out refueling operation to hydraulic oil tank of forklift, the hydraulic oil after filtering in absolute oil tank is added in hydraulic oil tank of forklift.
When carrying out refueling operation, need to observe the level meter on absolute oil tank equally, when in absolute oil tank, hydraulic oil liquid potential drop is to minimum liquid level, the spool of regulating three-way valve group one, be communicated with successively the pipeline between absolute oil tank, oil filter one and canister, the hydraulic oil of storing in canister is delivered in absolute oil tank after the filtration of oil machine one after filtration; When the hydraulic oil oil level of absolute oil tank is raised to the highest liquid level, turn-off the pipeline between absolute oil tank and oil filter one, now canister is communicated with the inlet/outlet of oil filter one, and oil filter one can carry out circulating oil filtering operation to the hydraulic oil in canister.
In to the filter process of fork truck hydraulic oil, while carrying out refueling operation, the liquid level of canister may drop to minimum liquid level, now by regulating three-way valve group two, be communicated with successively the pipeline between slop tank, oil filter two and canister, hydraulic oil in slop tank after filtering, oil filter two is delivered in canister, for supplementing the hydraulic oil in canister.And carry out oil suction when operation, the liquid level of canister may be raised to the highest liquid level, by regulating three-way valve group two, turn-offs the pipeline between slop tank and oil filter two.
Before using for the first time, in order to guarantee that absolute oil tank has enough clean hydraulic oil all the time, need to carry out pre-filtration step.This pre-filtration step is, before step 1, hydraulic oil is injected to canister, and turn-off respectively the pipeline between oil strain unit and slop tank and absolute oil tank, now canister is all communicated with the import and export of oil filter one and the import and export of oil filter two, oil strain unit carries out pre-filtering operation to the hydraulic oil in canister, after pre-filtering ten minutes, be communicated with again the pipeline between oil filter one and absolute oil tank, clean hydraulic oil is injected to absolute oil tank.
The above mode of execution is only that the preferred embodiment of the present invention is described; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that those of ordinary skills make technological scheme of the present invention, all should fall in the definite protection domain of claims of the present invention.
Claims (8)
1. a fork truck hydraulic oil filter, is characterized in that, comprising:
Slop tank (100), canister (200) and the absolute oil tank (300) placed successively;
Be arranged on the oil absorption machine (110) of slop tank (100) one sides, this oil absorption machine is communicated with slop tank upper end by fuel sucking pipe (120);
Be arranged on the oilling machine (310) of absolute oil tank (300) one sides, this oilling machine is communicated with absolute oil tank lower end by oil filling pipe (320);
Be arranged on the oil strain unit (210) of canister (200) one sides, this oil strain unit comprises oil filter one (211) and oil filter two (212), wherein the entrance of oil filter one is communicated with canister by taking over one (220), the outlet of oil filter one is communicated with canister and absolute oil tank by three-way valve group one (230), the entrance of oil filter two is communicated with canister and slop tank by three-way valve group two (240), and the outlet of oil filter two is communicated with canister by taking over two (250).
2. hydraulic oil filter according to claim 1, is characterized in that, the upper and lower end of described slop tank (100), canister (200) and absolute oil tank (300) is provided with level meter (400).
3. hydraulic oil filter according to claim 1, is characterized in that, the pipe interface place of described slop tank, canister and absolute oil tank is provided with ball valve.
4. a fork truck hydraulic oil filtering method that adopts filtrating equipment described in claim 1, is characterized in that comprising the steps,
Step 1: operating fork car travels to oil suction station, and make forklift door frame lifting tilt forward and back motion repeatedly;
Step 2: start oil absorption machine hydraulic oil tank of forklift is carried out to oil suction operation, by fork truck hydraulic oil inspiration slop tank, the fork truck hydraulic oil sucking in slop tank is delivered in canister after oil filter two filters, then is delivered to absolute oil tank after filtering by oil filter one;
Step 3: after oil suction has operated, fork truck is travelled to refueling station, use oilling machine to carry out refueling operation to hydraulic oil tank of forklift, the hydraulic oil after filtering in absolute oil tank is added in hydraulic oil tank of forklift.
5. fork truck hydraulic oil filtering method according to claim 4, it is characterized in that, when the hydraulic oil oil level in described slop tank is raised to the highest liquid level, be communicated with successively the pipeline between slop tank, oil filter two and canister, the soiling solution force feed in slop tank is delivered in canister after oil filter two filters; When the hydraulic oil oil level in slop tank drops to minimum liquid level, turn-off the pipeline between slop tank and oil filter two.
6. fork truck hydraulic oil filtering method according to claim 4, it is characterized in that, when the liquid level of described canister drops to minimum liquid level, be communicated with successively the pipeline between slop tank, oil filter two and canister, the soiling solution force feed in slop tank is delivered in canister after oil filter two filters; When the liquid level of canister is raised to the highest liquid level, turn-off the pipeline between slop tank and oil filter two.
7. fork truck hydraulic oil filtering method according to claim 4, it is characterized in that, when hydraulic oil liquid potential drop is to minimum liquid level in described absolute oil tank, be communicated with successively the pipeline between absolute oil tank, oil filter one and canister, hydraulic oil in canister is delivered in absolute oil tank after oil filter one filters; When the hydraulic oil oil level of absolute oil tank is raised to the highest liquid level, turn-off the pipeline between slop tank and oil filter two.
8. fork truck hydraulic oil filtering method according to claim 4, it is characterized in that, also comprise pre-filtration step, before step 1, hydraulic oil is injected to canister, turn-off respectively the pipeline between oil filter one, two and slop tank and absolute oil tank, the hydraulic oil in one, two pairs of canisters of oil filter carries out circulating oil filtering operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410339932.9A CN104100604A (en) | 2014-07-17 | 2014-07-17 | Device and method for filtering hydraulic oil of forklift |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410339932.9A CN104100604A (en) | 2014-07-17 | 2014-07-17 | Device and method for filtering hydraulic oil of forklift |
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| CN104100604A true CN104100604A (en) | 2014-10-15 |
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| CN201410339932.9A Pending CN104100604A (en) | 2014-07-17 | 2014-07-17 | Device and method for filtering hydraulic oil of forklift |
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Cited By (3)
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| CN104389855A (en) * | 2014-11-20 | 2015-03-04 | 衡阳合力工业车辆有限公司 | Oil replacing method and oil replacing system |
| CN106989082A (en) * | 2017-04-27 | 2017-07-28 | 南京苏润科技发展有限公司 | A kind of hydraulic oil Intelligent purifying detection control apparatus |
| EP3536656A1 (en) * | 2018-03-06 | 2019-09-11 | Jungheinrich Aktiengesellschaft | Method for emptying a hydraulic fluid tank of an industrial truck |
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| EP3536656A1 (en) * | 2018-03-06 | 2019-09-11 | Jungheinrich Aktiengesellschaft | Method for emptying a hydraulic fluid tank of an industrial truck |
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Application publication date: 20141015 |