Multi-stage progressive deep purification device for lubricating oil

Abstract

The utility model relates to the technical field of purification devices, which comprises a shell, an oil pump, a pre-filtering tank, a water removal tank, a particulate matter coalescence tank, a fine filtering tank, an oil inlet pipe and an oil outlet pipe, the oil inlet pipe and the oil outlet pipe are arranged on the side face of the shell, one end of the oil inlet pipe is connected with an oil inlet of the oil pump, and an oil outlet of the oil pump is connected with an oil inlet of the pre-filtering tank. An oil outlet of the pre-filtering tank is connected with an oil inlet of the water removal tank, an oil outlet of the water removal tank is connected with an oil inlet of the particulate matter coalescence tank, an oil outlet of the particulate matter coalescence tank is connected with an oil inlet of the fine filtering tank, and an oil outlet of the fine filtering tank is connected with one end of the oil outlet pipe. According to the multi-stage progressive deep purification device for the lubricating oil, through the series connection structure of the pre-filtering tank, the water removal tank, the particulate matter coalescence tank and the fine filtering tank, it is guaranteed that oil liquid sequentially passes through different functional modules, large-particle impurities, water, submicron particles and charge imbalance residues are removed stage by stage, and therefore the deep purification effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of lubricating oil purification technology, specifically a multi-stage progressive lubricating oil deep purification device. Background Technology

[0002] In industrial production and the operation of machinery, lubricating oil can build a stable lubricating film on the surface of mechanical parts, effectively reducing the coefficient of friction and significantly reducing wear between parts. However, as equipment continues to operate, lubricating oil inevitably mixes with various contaminants such as solid particles, moisture, and oxidation products. These contaminants alter the physicochemical properties of the lubricating oil, such as viscosity, and damage the integrity of the lubricating film. This not only exacerbates wear but may also cause corrosion, leading to frequent equipment failures and severely impacting production efficiency and equipment lifespan. Therefore, lubricating oil purification is a crucial step in ensuring the stable, efficient, and long-term operation of equipment. Traditional oil purification technologies mainly include filtration, centrifugal separation, vacuum dehydration, and adsorption. Early lubricating oil purification relied primarily on simple filter screens or filter cloths. These devices could only intercept larger particulate impurities, such as obvious metal shavings and large dust particles. Operation was mostly manual, requiring regular manual inspection and cleaning of the filter screens. Later purification equipment adopted multi-layer filtration technology, in addition to coarse filter screens, also incorporating fine filter paper or membranes, capable of filtering impurities as small as a few micrometers. Some also utilized centrifugal separation technology. Some purification equipment uses electrostatic adsorption, which uses high-voltage electrodes to charge pollutant particles, thereby adsorbing the charged particles under the action of an electric field.

[0003] 1. Simple filtration devices such as filter screens and filter cloths can only intercept large particles of impurities larger than tens of micrometers. They are difficult to remove small particles of impurities and cannot meet the requirements of high-precision equipment for the cleanliness of lubricating oil.

[0004] 2. The small pore size of polymer filter elements creates greater resistance to the flow of oil during the filtration process, resulting in a reduced flow rate of lubricating oil through the filter element. This makes the entire purification process take too long, and the small pore size of the filter element makes it more susceptible to clogging by tiny particles, colloids, sludge, and other impurities.

[0005] 3. Electrostatic purification equipment generates a high-voltage electric field during operation, posing certain safety risks. If the equipment's insulation performance is faulty or it is operated improperly, electric shock accidents may occur, threatening the personal safety of operators. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides a multi-stage progressive lubricating oil deep purification device for deep filtration of large particulate impurities, moisture, and submicron particles, ensuring oil cleanliness.

[0008] (II) Technical Solution

[0009] This utility model provides the following technical solution: a multi-stage progressive lubricating oil deep purification device, including a housing, an oil pump, a pre-filter tank, a water removal tank, a particulate matter agglomeration tank, a fine filter tank disposed within the housing, and an oil inlet pipe and an oil outlet pipe disposed on the side of the housing. One end of the oil inlet pipe is connected to the oil inlet of the oil pump, the oil outlet of the oil pump is connected to the oil inlet of the pre-filter tank, the oil outlet of the pre-filter tank is connected to the oil inlet of the water removal tank, the oil outlet of the water removal tank is connected to the oil inlet of the particulate matter agglomeration tank, the oil outlet of the particulate matter agglomeration tank is connected to the oil inlet of the fine filter tank, and the oil outlet of the fine filter tank is connected to one end of the oil outlet pipe.

[0010] Preferably, the pre-filter tank, water removal tank, particulate matter agglomeration tank, and fine filter tank are all mounted on tank supports inside the outer shell, and the oil pump is located below the tank supports.

[0011] Preferably, the pre-filtration tank, water removal tank, and fine filtration tank have the same structure, each including a purification tank body, a filter element, a filter element pressure plate, a cover, and fastening screws. The filter element is disposed in the purification tank body, the filter element pressure plate covers the upper end of the filter element, the cover seals the filter element in the purification tank body, and it is fixed by fastening screws.

[0012] Preferably, the pre-filter tank is provided with a pre-filter element, and the pore size of the pre-filter element is 10μm.

[0013] Preferably, the fine filter canister is equipped with a fine filter element with a pore size of 3μm.

[0014] Preferably, the outer casing is provided with a panel, operation buttons and an electrical system, and the outer casing is also provided with a plurality of placement holes adapted to the purification tank.

[0015] Preferably, the lower side of the housing is also provided with multiple omnidirectional casters.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a multi-stage progressive lubricating oil deep purification device, which has the following beneficial effects:

[0018] 1. This multi-stage progressive lubricating oil deep purification device, through a series structure of a pre-filter tank, a water removal tank, a particulate matter agglomeration tank, and a fine filter tank, ensures that the oil passes through different functional modules sequentially, removing large particulate impurities, moisture, submicron particles, and residual charge imbalances step by step, thereby achieving a deep purification effect. The pre-filter tank intercepts large particulate impurities, protecting downstream equipment; the water removal tank removes moisture through physical separation technology; the particulate matter agglomeration tank uses an electric field to agglomerate tiny particles; and the fine filter tank intercepts the agglomerated particles, ensuring the cleanliness of the oil. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of the multi-stage progressive lubricating oil deep purification device of this utility model;

[0020] Figure 2 This is a three-dimensional structural schematic diagram of another embodiment of the multi-stage progressive lubricating oil deep purification device of this utility model.

[0021] Figure 3 This is a schematic diagram of the internal structure of an embodiment of a multi-stage progressive lubricating oil deep purification device according to the present invention.

[0022] Figure 4 This is a schematic diagram of the split structure of the purification tank in an embodiment of a multi-stage progressive lubricating oil deep purification device of this utility model.

[0023] In the diagram: 1. Outer shell; 11. Panel; 12. Operation button; 13. Electrical system; 14. Placement hole; 15. Universal casters; 2. Oil pump; 3. Pre-filter tank; 31. Purification tank; 32. Filter element; 33. Filter element pressure plate; 34. Cover; 35. Fastening screws; 4. Water removal tank; 5. Particulate matter agglomeration tank; 6. Fine filter tank; 7. Oil inlet pipe; 8. Oil outlet pipe; 9. Tank support; 10. Top cover fixing plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a multi-stage progressive lubricating oil deep purification device.

[0026] Please see Figure 1-4 A multi-stage progressive lubricating oil deep purification device includes a housing 1, an oil pump 2, a pre-filter tank 3, a water removal tank 4, a particulate matter agglomeration tank 5, a fine filter tank 6, and an oil inlet pipe 7 and an oil outlet pipe 8 located on the side of the housing. One end of the oil inlet pipe 7 is connected to the oil inlet of the oil pump 2, the oil outlet of the oil pump 2 is connected to the oil inlet of the pre-filter tank 3, the oil outlet of the pre-filter tank 3 is connected to the oil inlet of the water removal tank 4, the oil outlet of the water removal tank 4 is connected to the oil inlet of the particulate matter agglomeration tank 5, the oil outlet of the particulate matter agglomeration tank 5 is connected to the oil inlet of the fine filter tank 6, and the oil outlet of the fine filter tank 6 is connected to one end of the oil outlet pipe 8.

[0027] This utility model's multi-stage progressive lubricating oil deep purification device mainly includes a shell 1, an oil pump 2, a pre-filter tank 3, a dehydration tank 4, a particulate matter agglomeration tank 5, a fine filter tank 6, an oil inlet pipe 7, and an oil outlet pipe 8. Oil enters from the outside under the action of the oil pump 2 and sequentially passes through the oil pump 2, pre-filter tank 3, dehydration tank 4, particulate matter agglomeration tank 5, and fine filter tank 6, thus completing the oil purification process. The pre-filter tank 3 and dehydration tank 4 perform coarse filtration of the oil, removing larger particulate impurities and water, preventing these impurities from entering subsequent precision filtration equipment or processing units, and preventing equipment blockage and wear. When passing through the particulate matter agglomeration tank 5, different electrodes are installed inside the tank, which first attach positive and negative charges to submicron-sized particles respectively. Then, at the outlet, particles carrying opposite charges attract each other, thus agglomerating into larger particle clusters. Finally, the high-precision filter element in the fine filter tank 6, with a pore size of 3 microns, effectively intercepts the agglomerated micro-particle clusters, further removing impurities from the oil.

[0028] This deep purification device employs a series structure consisting of a pre-filter tank 3, a dewatering tank 4, a particulate matter agglomeration tank 5, and a fine filter tank 6. This ensures that the oil passes through different functional modules sequentially, removing large particulate impurities, moisture, submicron particles, and residual charge imbalances step by step, thereby achieving a deep purification effect. The pre-filter tank 3 intercepts large particulate impurities, protecting downstream equipment; the dewatering tank 4 removes moisture through physical separation technology; the particulate matter agglomeration tank 5 uses an electric field to agglomerate tiny particles; and the fine filter tank 6 intercepts the agglomerated particles, ensuring the cleanliness of the oil.

[0029] In a preferred embodiment, refer to Figure 3 The pre-filter tank 3, water removal tank 4, particulate matter agglomeration tank 5, and fine filter tank 6 of this multi-stage progressive lubricating oil deep purification device are all mounted on tank supports 9 inside the outer shell 1, with the oil pump 2 located below the tank supports 9. By installing all the purification tanks on the tank supports 9 and distributing them at equal intervals, installation and disassembly are convenient. Positioning the oil pump 2 below the tank supports 9, and also placing most of the pipeline connection pipes below the tank supports 9, effectively utilizes the available space. In addition, the tank supports are made of stainless steel square tubing welded to plates, ensuring high strength and good corrosion resistance, further guaranteeing the stability of the purification tanks above them.

[0030] In a preferred embodiment, refer to Figure 4The pre-filter tank 3, water removal tank 4 and fine filter tank 6 of the multi-stage progressive lubricating oil deep purification device have the same structure. They all include a purification tank body 31, filter element 32, filter element pressure plate 33, cover 34 and fastening screws 35. The filter element 32 is located inside the purification tank body 31. The filter element pressure plate 33 covers the upper end of the filter element 32. The cover 34 seals the filter element 32 inside the purification tank body 31 and fixes it with fastening screws 35. Specifically, the main bodies of the pre-filtration tank 3, the dewatering tank 4, and the fine filtration tank 6 are made of stainless steel and mainly include a purification tank body 31, a filter element 32, a filter element pressure plate 33, a cover 34, and fastening screws 35. During installation, the filter element pressure plate 33 is first used to press the filter element 32 firmly, and then the fastening screws are used to press the filter element pressure plate 33 onto the upper end of the filter element 32. Then the cover 34 is put on and finally fixed with the fastening screws. The flange on the top of the tank body is equipped with a sealing ring. Through the tight contact between the cover 34 and the flange, oil leakage can be prevented.

[0031] In a preferred embodiment, refer to Figure 1-4 The multi-stage progressive lubricating oil deep purification device includes a pre-filter tank 3 with a pore size of 10 μm and a fine filter tank 6 with a pore size of 3 μm. The pre-filter tank 3 removes larger particulate impurities from the oil, while the fine filter tank 6 removes agglomerated microparticle clusters, further removing smaller impurities from the oil.

[0032] In a preferred embodiment, refer to Figure 1-4 The multi-stage progressive lubricating oil deep purification device has a control panel 11, operation buttons 12, and an electrical system 13 on its outer casing 1. The casing 1 also has multiple placement holes 14 adapted to the purification tanks. Multiple casters 15 are also provided on the lower side of the casing 1 for easy movement. A top cover fixing plate 10 is provided on the casing 1, and the placement holes 14 are located on the top cover fixing plate 10. During installation, the pre-filter tank 3 is placed in the first placement hole of the top cover fixing plate, the water removal tank 4 is placed in the second placement hole, the particulate matter agglomeration tank 5 is placed in the third placement hole, and the fine filter tank 6 is placed in the fourth placement hole. Finally, the top cover fixing plate is fixedly connected to the casing 1, thereby limiting the shaking of all purification tanks. The outer casing of this lubricating oil deep purification device is made of 2mm stainless steel plate and is divided into two compartments, front and rear. The front compartment has a control panel 11 for viewing the pressure in each purification tank and operation buttons 12 for starting, stopping, and controlling the operation of the entire machine. The electrical system 13 of the entire machine is also located in the forward compartment. All purification tanks, oil pumps and related pipelines are located in the aft compartment.

[0033] The multi-stage progressive lubricating oil deep purification device of this utility model also has the following features:

[0034] 1. The purification tank has a simple structure and good sealing performance. It adopts a flange sealing ring and filter element pressure plate design, and the filter element can be replaced simply by removing the screws, making maintenance convenient. The outer shell of the whole machine is made of high-strength steel plate, and the internal purification tank and pipeline are compactly arranged. The bottom is equipped with casters for easy movement.

[0035] 2. Most electrical control devices are located in front of the purification unit, while the purification tank and pipelines are located behind it, separated by a steel plate. This ensures complete isolation between the electrical system and the oil system, with signal transmission and control connections made through specific interfaces to prevent oil from contacting the electrical circuits.

[0036] 3. Each purification stage operates independently yet collaboratively. Pre-filtration protects downstream equipment, and the water removal tank prevents moisture from interfering with particle aggregation. Particle aggregation creates favorable conditions for fine filtration, ultimately achieving deep removal of impurities through classification. Compared to traditional technologies, this overcomes the limitations of single-function equipment (such as filtration only or water removal only) and avoids cross-interference of impurities.

[0037] 4. Since each purification tank has a relatively independent function, maintenance can be more targeted. Moreover, the reasonable arrangement of purification tanks can reduce the impact and damage of impurities on each tank, thereby reducing the frequency of replacing high-cost parts and lowering maintenance costs.

[0038] 5. Fire and explosion prevention ensures a safe working environment. The isolation between the electrical and oil systems effectively prevents electric shock accidents caused by oil leaks contacting electrical equipment, and also prevents leaked oil from corroding electronic components on circuit boards, thus preventing equipment malfunctions.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage progressive lubricating oil deep purification device, characterized in that, The device includes a housing, an oil pump housed within the housing, a pre-filter tank, a water removal tank, a particulate matter agglomeration tank, a fine filter tank, and an oil inlet pipe and an oil outlet pipe located on the side of the housing. One end of the oil inlet pipe is connected to the oil inlet of the oil pump, the oil outlet of the oil pump is connected to the oil inlet of the pre-filter tank, the oil outlet of the pre-filter tank is connected to the oil inlet of the water removal tank, the oil outlet of the water removal tank is connected to the oil inlet of the particulate matter agglomeration tank, the oil outlet of the particulate matter agglomeration tank is connected to the oil inlet of the fine filter tank, and the oil outlet of the fine filter tank is connected to one end of the oil outlet pipe.

2. The multi-stage progressive lubricating oil deep purification device according to claim 1, characterized in that, The pre-filtration tank, water removal tank, particulate matter agglomeration tank, and fine filtration tank are all mounted on tank supports inside the outer shell, and the oil pump is located below the tank supports.

3. The multi-stage progressive lubricating oil deep purification device according to claim 1, characterized in that, The pre-filtration tank, water removal tank, and fine filtration tank have the same structure, each including a purification tank body, filter element, filter element pressure plate, cover, and fastening screws. The filter element is placed inside the purification tank body, the filter element pressure plate covers the upper end of the filter element, the cover seals the filter element inside the purification tank body, and it is fixed by fastening screws.

4. The multi-stage progressive lubricating oil deep purification device according to claim 1, characterized in that, The pre-filter tank is equipped with a pre-filter element, and the pore size of the pre-filter element is 10μm.

5. The multi-stage progressive lubricating oil deep purification device according to claim 1, characterized in that, The fine filter canister is equipped with a fine filter element with a pore size of 3μm.

6. The multi-stage progressive lubricating oil deep purification device according to claim 1, characterized in that, The outer casing is equipped with a panel, operation buttons and electrical system, and also has multiple placement holes adapted to the purification tank.

7. The multi-stage progressive lubricating oil deep purification device according to claim 1, characterized in that, The underside of the housing is also equipped with multiple swivel casters.

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