Oil filtering device suitable for filtering hydraulic oil liquid in laboratory

Abstract

The utility model relates to an oil filtering device suitable for filtering hydraulic oil liquid in a laboratory, and solves the technical problems that the hydraulic oil liquid in the existing laboratory is difficult to filter, the cleanliness of the oil liquid does not reach the standard, or the filtering device is complex in structure. The device comprises a clean oil barrel, a dirty oil barrel and a rack, the clean oil barrel and the dirty oil barrel are positioned below the rack; the rack is provided with an oil pump, and a filter, an oil cleanliness online detector and a transfer oil tank which are sequentially arranged along an output oil path of the oil pump; the oil pump is connected with a motor; an input oil path of the oil pump communicates with the dirty oil barrel; a first output oil path at the bottom of the transfer oil tank is communicated with the clean oil barrel through a second switch valve, and a second output oil path is communicated with the dirty oil barrel through a first switch valve; and oil ways among the parts are connected through oil pipes. Due to the design of the transfer oil tank, the filtering process is easy to operate and controllable, time, energy and labor cost are saved, and working procedures are simplified.

Description

Technical Field

[0001] The utility model relates to an oil filter device, in particular to an oil filter device suitable for filtering hydraulic oil in a laboratory. Background Art

[0002] Currently, the dirty hydraulic oil used in hydraulic laboratory experiments is generally filtered and cleaned by an oil filter trolley for the next use. The specific operation of this oil filtering method is to insert the suction pipe and the discharge pipe of the oil filter trolley into a dirty oil barrel filled with dirty oil and an empty clean oil barrel respectively, and then start the oil filter trolley to filter the dirty oil.

[0003] In the existing oil filtering method, the qualified standard for oil cleanliness only stipulates the number of times of repeated oil filtering, that is, there is no clear cleanliness index. In addition, after each filtering is completed, the suction pipe and the discharge pipe need to be exchanged, and the filtering is repeated back and forth between the two oil barrels. This repeated filtering method is very energy-consuming. At the same time, since the oil barrels are not closed during the whole filtering process, it is easy to cause secondary pollution when exchanging the suction pipe and the discharge pipe, and the filtering quality cannot be controlled, making it difficult to ensure the oil cleanliness. The small particle pollutants carried in the unclean oil will cause damage to precision hydraulic components such as solenoid valves, valve plates, and clutches of the hydraulic test bench.

[0004] In summary, the current filtering of dirty oil in the laboratory is difficult, and there is a problem that the oil cleanliness does not meet the standard.

[0005] Chinese Patent CN114776667A discloses a centralized hydraulic oil filtering system, including a dirty oil tank, a centrifuge, a clean oil tank, an oil supply pipeline, an oil return pipeline, a first filtering device, and a second filtering device; the hydraulic oil enters the dirty oil tank through the first filtering device via the oil return pipeline, enters the clean oil tank after being filtered by the centrifuge from the dirty oil tank, and after the hydraulic oil in the clean oil tank is filtered again by the second filtering device, it enters the transmission through the oil supply pipeline. Chinese Patent CN106621529A discloses a centrifugal oil automatic filtering and circulating device, including a chassis and an oil barrel. The lower end of the oil barrel is hermetically provided with a motor chamber, there is a turntable on the motor chamber, and a centrifugal cylinder is fixed on the turntable. A propulsion piston is arranged in the oil barrel outside the centrifugal cylinder, the propulsion piston is fixedly connected with a propulsion rod, and an oil outlet pipe is arranged at the lower end of the oil barrel, and the oil outlet pipes are all connected to an oil cleanliness detector. Both of the above two filtering devices can achieve effective filtering of oil, but the structures and principles of these two filtering devices are relatively complex. Summary of the Utility Model

[0006] The purpose of the utility model is to solve the technical problems of difficult filtering of existing laboratory hydraulic oil, unqualified oil cleanliness, or complex structure of the filtering device, and to provide an oil filter device suitable for filtering laboratory hydraulic oil.

[0007] To achieve the above object, the technical solution provided by the present utility model is as follows:

[0008] An oil filter device suitable for filtering hydraulic oil in a laboratory, comprising a clean oil barrel and a dirty oil barrel, characterized in that:

[0009] It further includes a bench;

[0010] The clean oil barrel and the dirty oil barrel are located below the tabletop of the bench. The tops of the clean oil barrel and the dirty oil barrel are sealed and provided with interfaces;

[0011] A oil pump is arranged on the tabletop of the bench, and a filter, an on-line oil cleanliness detector and a transfer oil tank are arranged in sequence along the output oil circuit of the oil pump; the oil pump is connected with a motor to provide power;

[0012] The input oil circuit of the oil pump extends into the dirty oil barrel;

[0013] The bottom of the transfer oil tank is provided with a first output oil circuit and a second output oil circuit. The first output oil circuit is communicated with the clean oil barrel through a second switching valve, and the second output oil circuit is communicated with the dirty oil barrel through a first switching valve;

[0014] The oil circuits among the clean oil barrel, the dirty oil barrel, the oil pump, the filter, the on-line oil cleanliness detector and the transfer oil tank are all connected through oil pipes.

[0015] Further, the oil circuits of the oil pump, the filter, the on-line oil cleanliness detector and the transfer oil tank are on the same axis.

[0016] Further, the tabletop of the bench is a rectangular plate.

[0017] Further, the clean oil barrel and the dirty oil barrel are respectively located below the outer sides of both ends of the tabletop of the bench.

[0018] Further, the clean oil barrel is located below the outer side of one end of the tabletop of the bench close to the transfer oil tank.

[0019] Further, the second switching valve and the first switching valve are respectively arranged on the oil pipes close to the clean oil barrel and the dirty oil barrel.

[0020] The beneficial effects of the present utility model compared with the prior art:

[0021] 1. For the oil filter device suitable for filtering hydraulic oil in a laboratory of the present utility model, through the design of the transfer oil tank, the process of multiple repeated filtrations is easy to operate and controllable. The transfer oil tank is set by using the gravity principle, and the repeated filtration of dirty oil can be realized without exchanging the suction oil pipe and the discharge oil pipe, saving time, energy and labor costs, and simplifying the process.

[0022] 2. The oil filter device of the present utility model applicable to the filtration of hydraulic oil in laboratories introduces an on-line oil cleanliness detector, has the function of on-line detection of oil cleanliness, can conduct on-line detection of the quality of the oil, makes the qualified standard of oil cleanliness have clear indicators, and reduces the redundant filtration process.

[0023] 3. The oil filter device of the present utility model applicable to the filtration of hydraulic oil in laboratories adopts a closed filtration system. The whole filtration process is carried out in a closed manner. The oil pipe is fixed on the bench and does not need to be moved. At the same time, the connection between the oil pipe and the oil barrel is also a sealed structure, reducing the contact between the oil and the outside world, being able to ensure the cleanliness of the oil and avoiding the secondary pollution of the oil. Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of an embodiment of the oil filter device of the present utility model applicable to the filtration of hydraulic oil in laboratories;

[0025] Figure 2 is a schematic principle diagram of an embodiment of the present utility model;

[0026] Figure 3 is a usage flow chart of an embodiment of the present utility model.

[0027] The reference numerals in the drawings are explained as follows: 1 - clean oil barrel; 2 - first switching valve; 3 - dirty oil barrel; 4 - oil pump; 5 - motor; 6 - filter; 7 - on-line oil cleanliness detector; 8 - transfer oil tank; 9 - second switching valve; 10 - oil pipe; 11 - bench. Detailed Embodiment

[0028] Next, in combination with the drawings, the specific technical solutions in the embodiments of the present utility model will be further described.

[0029] The present utility model provides an oil filter device applicable to the filtration of hydraulic oil in laboratories. The principle of this device is: by setting a transfer oil tank on the bench, temporarily pumping the filtered oil into the transfer oil tank, the cleanliness of the oil is on-line monitored by the on-line oil cleanliness detector. If the cleanliness of the oil meets the requirements, the switching valve is opened, and the oil enters the clean oil barrel under the bench under the action of gravity. If the cleanliness of the oil does not meet the requirements, another switching valve is opened, and the oil also flows back into the dirty oil barrel under the bench under the action of gravity for repeated filtration.

[0030] See Figure 1 , an oil filter device applicable to the filtration of hydraulic oil in laboratories, including a clean oil barrel 1, a first switching valve 2, a dirty oil barrel 3, an oil pump 4, a motor 5, a filter 6, an on-line oil cleanliness detector 7,

[0031] Transfer oil tank 8, second switching valve 9, oil pipe 10, and bench 11. The clean oil barrel 1 and the dirty oil barrel 3 are placed below the outer side of the tabletop of the bench 11, enabling the transfer oil tank 8 to output by gravity and facilitating the replacement of the clean oil barrel 1 and the dirty oil barrel 3. The tops of the clean oil barrel 1 and the dirty oil barrel 3 are sealed with interfaces left; the remaining parts are installed on the bench, and all parts are connected by oil pipes as follows:

[0032] The tabletop of the bench 11 is a rectangular plate, facilitating material acquisition or directly borrowing other tabletops for layout; a fuel pump 4 is arranged on the tabletop, and a filter 6, an on-line oil cleanliness detector 7, and a transfer oil tank 8 are arranged in sequence along the output oil circuit of the fuel pump 4; the fuel pump 4 is connected to a motor 5 to provide power.

[0033] The input oil circuit of the fuel pump 4 extends into the dirty oil barrel 3; the bottom of the transfer oil tank 8 is provided with a first output oil circuit and a second output oil circuit. The first output oil circuit is connected to the clean oil barrel 1 through the second switching valve 9, and the second output oil circuit is connected to the dirty oil barrel 3 through the first switching valve 2.

[0034] The oil circuits among the clean oil barrel 1, the dirty oil barrel 3, the fuel pump 4, the filter 6, the on-line oil cleanliness detector 7, and the transfer oil tank 8 are connected by the oil pipe 10.

[0035] Among them, the oil circuits of the fuel pump 4, the filter 6, the on-line oil cleanliness detector 7, and the transfer oil tank 8 are on the same axis. The clean oil barrel 1 and the dirty oil barrel 3 are respectively located below the two ends of the tabletop of the bench 11, and the clean oil barrel 1 is located at one end close to the transfer oil tank 8. The second switching valve 9 and the first switching valve 2 are respectively arranged on the oil pipe 10 close to the clean oil barrel 1 and the dirty oil barrel 3 for easy operation.

[0036] The technical route of the present utility model is as follows: The used dirty oil is collected into the dirty oil barrel, then placed on one side of the bottom of the bench 11 of the oil filtering device and the oil pipe 10 is connected well, and the clean oil barrel is placed on the other side of the bottom of the bench 11 and the oil pipe 10 is connected well. At this time, both the first switching valve 2 and the second switching valve 9 are in the closed state. Start the device, the oil is sucked by the fuel pump 4, filtered by the filter 6 and enters the transfer oil tank 8. The cleanliness of the filtered oil is detected by the on-line oil cleanliness detector 7. If the cleanliness of the oil meets the requirements, then when all the dirty oil is filtered into the transfer oil tank 8, open the second switching valve 9, and the oil flows into the clean oil barrel 1. If the cleanliness of the oil does not meet the requirements, then open the first switching valve 2, and the oil flows back into the dirty oil barrel 3 to be filtered again until the cleanliness of the oil meets the requirements. Then when all the dirty oil is filtered into the transfer oil tank 8, open the second switching valve 9, and the oil flows into the clean oil barrel 1, and the whole oil filtering process is completed.

[0037] The working process of the embodiment of the present utility model is as follows:

[0038] (1) Place the dirty oil drum 3 filled with dirty oil and the clean oil drum 1 in the corresponding positions on the device bench 11 in the laboratory respectively, and connect the oil pipe 10 well.

[0039] (2) Conduct an electrical connection inspection before starting the device. At this time, the first switching valve 2 and the second switching valve 9 are in the closed state.

[0040] Start the device. The oil pump 4 sucks the dirty oil in the dirty oil drum 3 to the filter 6. The oil liquid filtered by the filter 6 will be detected for oil liquid cleanliness by the on-line oil liquid cleanliness detector 7, and finally the oil liquid enters the transfer oil tank 8.

[0041] (3) At this time, judge according to the oil liquid cleanliness detected by the on-line oil liquid cleanliness detector 7 for the filtered oil liquid. There are two situations:

[0042] The first situation is that it meets the requirements. Then, after filtering all the oil liquid into the transfer oil tank 8, turn off the motor 5, open the second switching valve 9. The oil liquid flows into the clean oil drum 1 under the action of gravity. After all the oil liquid in the transfer oil tank 8 has flowed into the clean oil drum 1, close the second switching valve 9 and turn off the device. The filtering ends.

[0043] The second situation is that it does not meet the requirements. Then, after filtering all the oil liquid into the transfer oil tank 8, turn off the motor 5, open the first switching valve 2. The oil liquid flows back into the dirty oil drum 3 under the action of gravity. After all the oil liquid in the transfer oil tank 8 has flowed into the dirty oil drum 3, close the first switching valve 2, start the motor 5, and filter the oil liquid again.

[0044] If the cleanliness of the oil liquid still does not meet the requirements, repeat the above steps to filter the oil liquid cyclically until the cleanliness of the oil liquid meets the requirements. Then perform the operation of the first situation to fill the qualified oil liquid in terms of cleanliness from the transfer oil tank 8 into the clean oil drum 1.

[0045] So far, the operation of the device ends. Close the second switching valve 9 and the motor 5, disconnect the connections between the clean oil drum 1 and the dirty oil drum 3 and the oil pipe 10, remove the clean oil drum 1 and the dirty oil drum 3, clean the device, and wait for the next use.

[0046] The above description is only the embodiments of the present utility model, and does not limit the protection scope of the present utility model. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model. For those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An oil filter device applicable to the filtration of hydraulic oil in a laboratory, comprising a clean oil barrel (1) and a dirty oil barrel (3), characterized in that: It further includes a bench (11); The clean oil barrel (1) and the dirty oil barrel (3) are located below the tabletop of the bench (11), and the tops of the clean oil barrel (1) and the dirty oil barrel (3) are sealed and provided with interfaces; A oil pump (4) is arranged on the tabletop of the bench (11), and a filter (6), an on-line oil cleanliness detector (7) and a transfer oil tank (8) are arranged in sequence along the output oil circuit of the oil pump (4); the oil pump (4) is connected with a motor (5) to provide power; The input oil circuit of the oil pump (4) extends into the dirty oil barrel (3); The bottom of the transfer oil tank (8) is provided with a first output oil circuit and a second output oil circuit. The first output oil circuit is communicated with the clean oil barrel (1) through a second switching valve (9), and the second output oil circuit is communicated with the dirty oil barrel (3) through a first switching valve (2); The oil circuits among the clean oil barrel (1), the dirty oil barrel (3), the oil pump (4), the filter (6), the on-line oil cleanliness detector (7) and the transfer oil tank (8) are all connected through oil pipes (10).

2. The oil filter device applicable to the filtration of hydraulic oil in a laboratory according to claim 1, characterized in that: The oil circuits of the oil pump (4), the filter (6), the on-line oil cleanliness detector (7) and the transfer oil tank (8) are on the same axis.

3. The oil filter device applicable to the filtration of hydraulic oil in a laboratory according to claim 2, characterized in that: The tabletop of the bench (11) is a rectangular plate.

4. The oil filter device applicable to the filtration of hydraulic oil in a laboratory according to claim 3, characterized in that: The clean oil barrel (1) and the dirty oil barrel (3) are respectively located below the outer sides of the two ends of the tabletop of the bench (11).

5. The oil filter device applicable to the filtration of hydraulic oil in a laboratory according to claim 4, characterized in that: The clean oil barrel (1) is located below the outer side of the end of the tabletop of the bench (11) close to the transfer oil tank (8).

6. The oil filter device applicable to the filtration of hydraulic oil in a laboratory according to claim 5, characterized in that: The second switching valve (9) and the first switching valve (2) are respectively arranged on the oil pipes (10) close to the clean oil barrel (1) and the dirty oil barrel (3).

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