Online automatic filtering device for hydraulic oil

Abstract

The utility model discloses an on-line automatic filtering device for hydraulic oil, which relates to the technical field of oil filtering and purifying and comprises a variable-frequency oil pump, a coarse filtering device, an oil purifying tank device, a fine filtering device and a master control room, according to the oil purification equipment, oil is filtered in a classified mode, so that the impurity content in oil is effectively reduced, the stability and efficiency of equipment operation are improved, the oil purification equipment can be connected with an equipment oil pipe, online filtering is achieved, cooperative work of operation equipment, a filtering device and a detection instrument does not need to be shut down, sudden faults caused by oil pollution are reduced, and the service life of the oil purification equipment is prolonged. The device is simple in structure and convenient to operate, equipment maintenance cost is reduced, uniform distribution of electric field intensity is achieved through coaxial arrangement of a wire body electrode and a barrel body electrode in the oil purification tank device, the particle electrification efficiency is improved, the efficient purification effect is achieved under low voltage, a grounding wire and an insulating layer are arranged, and the risk of oil breakdown is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic detection equipment, in particular to an on-line automatic hydraulic oil filtering device. Background Technique

[0002] Hydraulic oil is the main working medium in the hydraulic systems of mechanical equipment such as hydraulic presses and ring rolling machines. Through the action of a hydraulic pump, mechanical energy is converted into hydraulic energy and transmitted to a hydraulic cylinder or piston, thereby realizing the processing or operation of workpieces. However, after the equipment runs for a long time, the impurities in the hydraulic oil increase, which easily causes equipment failures and affects the equipment operation rate and production efficiency. With the rapid development of the manufacturing industry, the hydraulic oil filtering technology is gradually developing towards the direction of intelligence and automation.

[0003] Among them, the balanced charge oil purification technology is an innovative solution. For example, CN113856311A, a new lubricating oil purification system and purification method based on charge balance, includes sequentially arranging a coarse filter and a first fine filter at the lubricating oil tank opening, and a particle charging unit that makes the lubricating oil flow into two wire barrel electrodes respectively, so that the tiny solid particles in the two branches are respectively charged with positive and negative charges, and then aggregates them into larger solid particles and introduces them into the second fine filter, and filters out the solid particles in the second fine filter to achieve the purification of the lubricating oil. However, this technical solution requires manual operation and monitoring, cannot cooperate with the intelligent system, wastes human resources, and cannot guarantee work efficiency and accuracy. Content of the Utility Model

[0004] The purpose of the utility model is to provide an on-line automatic hydraulic oil filtering device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: An on-line automatic hydraulic oil filtering device, comprising: a variable frequency oil pump, an oil inlet is arranged on the left side of the variable frequency oil pump, an opening is arranged on the right side of the variable frequency oil pump, a first pipeline is connected to the opening, the other end of the first pipeline is connected to a coarse filtering device, an opening is arranged at the top of the coarse filtering device, a second pipeline is connected to the opening, the second pipeline passes through the general control room, and the other end is connected to a clean oil tank device, the right side of the clean oil tank device is connected to a fine filtering device through a third pipeline, and an oil outlet is arranged at the lower right part of the fine filtering device.

[0006] Furthermore, the coarse filtering device includes: a coarse filtering tank body, a coarse filtering core, a water-oil separation filter element and a water storage tank are sequentially arranged in the coarse filtering tank body from top to bottom, and a drain port is arranged outside the water storage tank.

[0007] Furthermore, the clean oil tank device includes: four tanks with the same structure, which are the first clean oil tank, the second clean oil tank, the third clean oil tank, and the fourth clean oil tank in sequence from left to right. The clean oil tanks are connected by a fourth pipeline. A wire electrode is vertically arranged on the central axis at the lower part inside the tank. A coaxial cylinder electrode is arranged outside the wire electrode, and a cellulose filter core is arranged at the upper part. An anti-corrosion insulating inner coating is arranged on the inner wall of the tank, a sewage outlet and a grounding wire are arranged at the bottom, and a detector is arranged outside. The detector is connected to the main control room

[0008] Preferably, the detector includes: a pollutant concentration detection probe, a particle charge detection probe, and an electric field strength detection probe

[0009] Preferably, a regulating valve is arranged on the first pipeline, and the regulating valve is connected to the main control room.

[0010] Preferably, the fine filtration device includes: a fine filter core is arranged inside, and a pressure sensor is arranged at the top.

[0011] Preferably, the main control room includes: a pollutant concentration detector, a particle charge detector, an electric field strength regulator, and a pipeline oil flow rate regulator.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model filters the oil liquid in stages by setting a variable frequency oil pump, a coarse filtration device, a clean oil tank device, a fine filtration device, and a main control room, thereby effectively reducing the impurity content in the oil product, improving the stability and efficiency of equipment operation. Moreover, the clean oil equipment can be connected to the equipment oil pipeline to achieve online filtration without shutting down the operating equipment. The coordinated operation of the filtration device and the detector can ensure that the cleanliness of the hydraulic oil is maintained within the ideal range for a long time, reduce sudden failures caused by oil product pollution, and lower the equipment maintenance cost. Additionally, by coaxially arranging the wire electrode and the cylinder electrode inside the clean oil tank device, the uniform distribution of the electric field strength is realized, the particle charging efficiency is improved, and thus the high-efficiency purification effect can be achieved at a low voltage. A grounding wire and an insulating layer are provided to avoid the risk of oil liquid breakdown. Finally, by setting a pollutant concentration detector, a particle charge detector, an electric field strength regulator, and a pipeline oil flow rate regulator in the main control room and integrating them into a comprehensive monitoring system, data sharing and coordinated operation among various modules are realized, providing a comprehensive oil product quality assessment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a schematic diagram of the clean oil tank device of the present utility model;

[0015] Figure 3 is a sectional view of the first clean oil tank of the present utility model;

[0016] Figure 4 Structural schematic diagram of the wire electrode and cylinder electrode of the present utility model;

[0017] Figure 5 Structural schematic diagram of the fine filtration device of the present utility model;

[0018] Figure 6 Structural schematic diagram of the coarse filtration device of the present utility model;

[0019] In the figure: 1, variable frequency oil pump, 2, oil inlet, 3, first pipeline, 4, coarse filtration device, 5, second pipeline, 6, general control room, 7, clean oil tank device, 8, third pipeline, 9, fine filtration device, 10, oil outlet, 301, regulating valve, 401, coarse filtration tank body, 402, coarse filtration element, 403, water-oil separation filter element, 404, water storage tank, 405, drain port, 701, first clean oil tank, 702, second clean oil tank, 703, third clean oil tank, 704, fourth clean oil tank, 705, fourth pipeline, 706, wire electrode, 707, cylinder electrode, 708, cellulose filter element, 709, anti-corrosion insulating inner coating, 710, sewage discharge port, 711, grounding wire, 712, detector, 901, fine filtration element, 902, pressure sensor. Specific embodiments

[0020] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Please refer to Figure 1-6 , the present utility model provides an on-line automatic hydraulic oil filtration device, including: a variable frequency oil pump 1, an oil inlet 2 is provided on the left side of the variable frequency oil pump 1, an opening is provided on the right side of the variable frequency oil pump 1, a first pipeline 3 is connected to the opening, the other end of the first pipeline 3 is connected to a coarse filtration device 4, an opening is provided at the top of the coarse filtration device 4, a second pipeline 5 is connected to the opening, the second pipeline 5 passes through the general control room 6, and the other end is connected to a clean oil tank device 7, the right side of the clean oil tank device 7 is connected to a fine filtration device 9 through a third pipeline 8, and an oil outlet 10 is provided at the lower right side of the fine filtration device 9.

[0022] The coarse filtration device 4 includes: a coarse filtration tank body 401, a coarse filtration element 402, a water-oil separation filter element 403 and a water storage tank 404 are sequentially arranged in the coarse filtration tank body 401 from top to bottom, and a drain port 405 is provided outside the water storage tank.

[0023] The described clean oil tank device 7 includes: four tanks with the same structure, which are the first clean oil tank 701, the second clean oil tank 702, the third clean oil tank 703, and the fourth clean oil tank 704 from left to right. The clean oil tanks are connected by a fourth pipeline 705. A wire electrode 706 is vertically arranged on the central axis at the lower part inside the tank. A coaxial cylinder electrode 707 is arranged outside the wire electrode 706. A cellulose filter core 708 is arranged at the upper part. An anti-corrosion and insulating inner coating 709 is arranged on the inner wall of the tank. A sewage outlet 710 and a grounding wire 711 are arranged at the bottom. A detector 712 is arranged outside, and the detector 712 is connected to the general control room 6.

[0024] The detector 712 includes: a pollutant concentration detection probe, a particle charge detection probe, and an electric field strength detection probe.

[0025] A regulating valve 301 is arranged on the first pipeline 3, and the regulating valve 301 is connected to the general control room 6.

[0026] The fine filtration device 9 includes: a fine filter core 901 is arranged inside, and a pressure sensor 902 is arranged at the top.

[0027] The general control room 6 includes: a pollutant concentration detector, a particle charge detector, an electric field strength regulator, and a pipeline oil flow rate regulator.

[0028] When using the present utility model, first connect the oil inlet 2 and the oil outlet 10 to the oil circuit respectively, and then start the variable-frequency oil pump 1 to transport the contaminated oil through the first pipeline 3 to the coarse filtration device 4. A regulating valve 301 is provided on the first pipeline 3, and the regulating valve controls the oil flow rate in the pipeline through the oil flow rate regulator of the pipeline in the general control room 6. The oil first passes through the water-oil separation filter element 403 in the coarse filtration device 4 to filter the water in the oil, preventing the water in the oil from being charged and causing the oil to break down when the oil is charged. The filtered water flows into the lower water storage tank 404. When the water level in the water storage tank 404 reaches the set value, open the drain port 405 to drain the water in the water storage tank 404. The remaining oil continues to pass through the coarse filter element 402 to filter out the larger impurities in the oil, avoiding the larger impurities from flowing into the clean oil tank device, improving the clean oil efficiency. The remaining oil enters the clean oil tank device 7 through the second pipeline. Inside the clean oil tank body, there are a wire electrode 706 and a cylinder electrode 707. Some oil impurities contact the wire electrode 706 and carry positive charges, and some oil impurities contact the cylinder electrode 707 and carry negative charges. After the positively charged particles and the negatively charged particles come into contact, they aggregate to form larger solid particles, which are filtered and screened out through the cellulose filter element 706. There are four clean oil tanks with the same structure in the clean oil tank device 7. The above filtration process goes through four times to ensure the purification efficiency of the oil. Among them, a grounding wire 711 is provided at the bottom of the tank body, and an anti-corrosion insulating inner coating 709 is provided on the inner wall of the tank to further ensure the safe use of the equipment, avoiding the oil from breaking down when charging the oil. And a detector 712 is provided outside the clean oil tank. The detector 712 includes: a pollutant concentration detection probe for detecting the content of pollutants in the oil, a particle charge detection probe for detecting the charge condition of impurity particles, and an electric field intensity detection probe for detecting the electric field intensity inside the tank, so as to monitor the oil filtration process in real time and feedback the results to the general control room 6 in real time. The general control room 6 adjusts the electric field intensity and the pipeline flow rate in real time based on the feedback data by the pollutant concentration detector, the particle charge detector, the electric field intensity regulator, and the pipeline oil flow rate regulator. The oil purified by the clean oil tank device 7 flows into the fine filtration device 9 through the third pipeline 8. After the oil passes through the fine filter element 901, it flows out from the oil outlet 10. A pressure sensor 902 is provided at the top of the fine filtration device 9. When the internal pressure of the fine filtration device 9 exceeds the set value, the general controller 6 can control the pipeline flow rate to ensure a stable pressure output.

[0029] Although embodiments of the present utility model have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, those of ordinary skill in the art can understand that without departing from the principle and spirit of the present utility model and without creative efforts, all other embodiments obtained by making various changes, modifications, substitutions, and variations to these embodiments fall within the scope of protection of the present utility model.

Claims

1. An on-line automatic hydraulic oil filtering device, characterized in that, Comprising: A variable-frequency oil pump (1), an oil inlet (2) is provided on the left side of the variable-frequency oil pump (1), an opening is provided on the right side of the variable-frequency oil pump (1), a first pipeline (3) is connected to the opening, the other end of the first pipeline (3) is connected to a coarse filtration device (4), an opening is provided at the top of the coarse filtration device (4), a second pipeline (5) is connected to the opening, the second pipeline (5) passes through the general control room (6), and the other end is connected to a clean oil tank device (7), the right side of the clean oil tank device (7) is connected to a fine filtration device (9) through a third pipeline (8), and an oil outlet (10) is provided at the lower right side of the fine filtration device (9).

2. The on-line automatic hydraulic oil filtering device according to claim 1, characterized in that The coarse filtration device (4) includes: a coarse filtration tank body (401), a coarse filtration core (402), a water-oil separation filter element (403) and a water storage tank (404) are sequentially arranged in the coarse filtration tank body (401) from top to bottom, and a drain port (405) is provided outside the water storage tank.

3. The on-line automatic hydraulic oil filtering device according to claim 2, characterized in that, The clean oil tank device (7) includes: four tanks with the same structure, which are the first clean oil tank (701), the second clean oil tank (702), the third clean oil tank (703) and the fourth clean oil tank (704) from left to right. The clean oil tanks are connected through a fourth pipeline (705). A wire electrode (706) is vertically arranged on the central axis of the lower part inside the tank body. A coaxial cylinder electrode (707) is arranged outside the wire electrode (706). A cellulose filter core (708) is arranged on the upper part. An anti-corrosion insulating inner coating (709) is arranged on the inner wall of the tank body. A sewage discharge port (710) and a grounding wire (711) are arranged at the bottom. A detector (712) is arranged outside, and the detector (712) is connected to the general control room (6).

4. The on-line automatic hydraulic oil filtering device according to claim 3, characterized in that, The detector (712) includes: a pollutant concentration detection probe, a particle charge detection probe, and an electric field strength detection probe.

5. The on-line automatic hydraulic oil filtering device according to claim 4, characterized in that, A regulating valve (301) is provided on the first pipeline (3), and the regulating valve (301) is connected to the general control room (6).

6. The on-line automatic hydraulic oil filtering device according to claim 5, characterized in that, The fine filtration device (9) includes: a fine filtration core (901) is arranged inside, and a pressure sensor (902) is arranged at the top.

7. The on-line automatic hydraulic oil filtering device according to claim 6, characterized in that, The general control room (6) includes: a pollutant concentration detector, a particle charge detector, an electric field strength regulator, and a pipeline oil flow rate regulator.

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