CN112403094A - Lubricating oil vacuum oil filter - Google Patents
Lubricating oil vacuum oil filter Download PDFInfo
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- CN112403094A CN112403094A CN201910779832.0A CN201910779832A CN112403094A CN 112403094 A CN112403094 A CN 112403094A CN 201910779832 A CN201910779832 A CN 201910779832A CN 112403094 A CN112403094 A CN 112403094A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to a vacuum oil filter, in particular to a lubricating oil vacuum oil filter, which comprises: an oil filter case; primary filtering; the vacuum heater is arranged inside the oil filter case and comprises a heating box, a detachable vacuum pump filter element and an ion exchange resin filter element are arranged in the heating box, and a water vapor outlet is formed in the top of the heating box; a condenser; the fine filter comprises a fine filter box, and a detachable fine filter element is arranged in the fine filter box; a control panel. The invention solves the problem of poor oil-water separation effect of the lubricating oil filter in the prior art. The invention filters impurities and adsorption water through multiple filter elements, well realizes the demulsification effect, and has the advantages of high filtering precision, low cost, good atomization effect of the vacuum heater and good water removal effect.
Description
Technical Field
The invention relates to a vacuum oil filter, in particular to a lubricating oil vacuum oil filter.
Background
The vacuum oil filter is a product for performing on-site oil filtering and oil supplementing aiming at various oil immersed transformers, oil immersed current and voltage transformers and high-voltage less-oil circuit breakers. The vacuum oil purifier is designed according to the principle that the boiling points of water and oil are different, and consists of a fine filter of a vacuum heating tank, a condenser, a primary filter, a water tank, a vacuum pump, an oil discharge pump and an electric cabinet. The vacuum pump takes out the air in with the vacuum tank and forms the vacuum, and external fluid gets into the prefilter through having the inlet pipe under the effect of atmospheric pressure, clears away great granule, then gets into in the heating jar, and through the oil of 40 ~ 75 ℃ such as heating float the valve through automatic oil, and this valve is that automatic control gets into the oil mass business turn over in the vacuum jar is balanced. The oil liquid after being heated is separated into semi-fog through the flying rotation of the spray wings, and the water in the oil is rapidly evaporated into water vapor and continuously sucked into the condenser by the vacuum pump. The water vapor entering the condenser is cooled and then returns to water to be discharged, the oil liquid in the vacuum heating tank is discharged into a fine filter by an oil discharge pump, and particulate impurities are filtered out by an oil filter paper or a filter element, so that the whole process of rapidly removing the impurities, water and gas in the oil by the vacuum oil filter is completed, and clean oil is discharged out of the vacuum oil filter from an oil outlet.
Dust, mechanical impurities and a large amount of moisture can be mixed into lubricating oil in the operation of the unit in the use process, the lubricating oil in the operation inevitably contacts with water vapor, severe emulsification of the lubricating oil is caused, oil and water are not easy to separate, the lubricating performance of the lubricating oil can be reduced, meanwhile, the oxidation deterioration of the lubricating oil and the corrosion of metal parts are accelerated, and the safe operation of the unit is influenced.
In the prior art, pressure oil filters or vacuum oil filters are generally used. When the pressure type oil filter is used for processing, impurities and adsorbed water are filtered through filter paper, the demulsification effect cannot be realized, the processing time is long, the work is complex, the efficiency is low, the filtering precision cannot meet the requirement, and the cost is high. The vacuum oil filter has poor atomization effect, oil is easy to foam, the vacuum degree is reduced for breaking vacuum and preventing foaming, and the water removal effect is poor.
Disclosure of Invention
In view of the above disadvantages of the prior art, an object of the present invention is to provide a vacuum lubricant oil filter, which is used to solve the problem of poor oil-water separation effect of the vacuum lubricant oil filter in the prior art. The lubricating oil vacuum oil filter provided by the invention has the advantages of good oil-water separation effect, high working efficiency and convenience in operation.
To achieve the above and other related objects, the present invention provides a lubricating oil vacuum filter including:
the oil filter case is installed on the base, an oil inlet pipe is arranged at the top of the oil filter case, and an oil discharge pipe is arranged at the bottom of the oil filter case;
the primary filter is arranged inside the oil filter case and comprises a primary filter box, the oil inlet end of the primary filter box is communicated with the oil inlet pipe, a detachable coarse filter element is arranged in the primary filter box, and the primary filter box is connected with a first oil pump;
the vacuum heater is arranged inside the oil filter case and comprises a heating box, the oil inlet end of the heating box is communicated with the oil outlet end of the primary filter box through a first pipeline, and a detachable vacuum pump filter element and an ion exchange resin filter element are arranged in the heating box; the heating box is connected with a vacuum pump; a steam outlet is formed in the top of the heating box;
the condenser is communicated with the water vapor outlet through a second pipeline, an air filter is arranged on the condenser, and a second oil pump is connected to the condenser;
the fine filter comprises a fine filter box, the oil inlet end of the fine filter box is connected with the oil outlet end of the heating box through a third pipeline, a detachable fine filter element is arranged in the fine filter box, the oil outlet end of the fine filter box is communicated with an oil discharge pipe, and the oil discharge pipe is connected with a third oil pump;
the control panel is installed on the oil filter case, the control panel is electrically connected with the power supply, and the first oil pump, the vacuum pump, the second oil pump and the third oil pump are electrically connected with the control panel.
The oil filter case is used for protecting the functional components and is arranged on the base, wherein the base is used for supporting and fixing. The primary filter is provided with a primary filter box which is used for simple filtration and mainly filters substances such as mechanical impurities; the coarse filter element is detachably arranged in the primary filter box, oil is fed into the hollow position at the top in the primary filter box, and the oil is discharged from the outer side after being filtered by the coarse filter element. Power is provided for the primary filter box through the first oil pump, so that lubricating oil can enter the primary filter box and accelerate the filtering speed to enter the vacuum heater.
Lubricating oil enters a heating box of the vacuum heater, oil heated by the heating box is separated into semi-fog through the flying rotation of the spray wings, water in the oil is rapidly evaporated into water vapor and enters a condenser (a second oil pump provides power) through a water vapor outlet, the water vapor continuously sucked into the condenser by the second oil pump, the water vapor entering the condenser is cooled and then changed into water to be discharged, an air filter is arranged to discharge impurities in the air, and the air is prevented from flowing backwards to introduce the impurities into the heating box.
The heated oil is semi-vaporific, is sequentially filtered by an ion exchange resin filter element and a vacuum pump filter element, and then enters a fine filter, and the fine filter removes particulate impurities, so that the purity of the lubricating oil is improved. The ion exchange resin filter element has filtering effect and can adsorb and remove color.
The lubricating oil is sequentially subjected to impurity removal through a primary filter, a vacuum heater and a fine filter, so that the finally filtered lubricating oil is low in impurity content and bright in color; oil-water separation and multiple filtration are designed in the vacuum heater, so that the separation rate of the oil-water separation is improved, the working efficiency is high, and the operation is convenient; impurities and adsorption water are filtered through multiple filter elements, so that the demulsification effect is well realized, the filtering precision is high, and the cost is low; the vacuum heater has good atomization effect, the lubricating oil basically does not foam, the problem that the vacuum degree is reduced for breaking vacuum and preventing foaming is well avoided, and the water removal effect is good.
In an embodiment of the present invention, the oil filter case is a sandwich structure, and a buffer is filled in the middle of the sandwich structure. The oil filter case is designed to be of a sandwich structure, and the sandwich layer is filled with buffering substances to achieve the shock absorption effect. In the working process of the whole vacuum oil filter, a plurality of oil pump vacuum pumps work, and an oil filter case can also generate certain influence; thereby realize oil filter machine case shock attenuation effect through designing the buffer layer.
In an embodiment of the present invention, electromagnetic valves are installed on the oil inlet pipe, the first pipeline, the second pipeline, the third pipeline and the oil discharge pipe, and the electromagnetic valves are electrically connected to the control panel. The electromagnetic valve is designed to control the flow of the lubricating oil, so that the problem of inconsistent reaction processes among different working procedures caused by too high or too low flow speed is avoided.
In an embodiment of the present invention, the primary filter is a double-tank filter, and two primary filter tanks of the double-tank filter are communicated with each other through a pipeline. The primary filter adopts the double-box filter, so that the filtering efficiency is improved, and in the coarse filtering process, the power of two primary filter boxes can be provided by adopting an oil pump, so that the filtering efficiency is improved, and the utilization rate of energy is increased.
In an embodiment of the present invention, a heating rod is installed in the middle of the heating box, and the heating rod is electrically connected to the control panel; an oil drainage layer is arranged on the heating rod; the ion exchange resin filter element is arranged on the inner side of the vacuum pump filter element. The middle part of the heating box is provided with a heating rod, the hollow position in the top part of the heating box is filled with oil, and the oil is discharged from the outer side after being filtered by the ion exchange resin filter element and the vacuum pump filter element; the heating rod is arranged in the middle of the oil tank, so that unfiltered lubricating oil can be uniformly heated, the heating is uniform, and the heating effect is good. Thereby lubricating oil carries out ion exchange through ion exchange resin filter core earlier and adsorbs thereby go out harmful metal ion in the lubricating oil, filters through the vacuum pump filter core, can be fine realize oil-water separation's effect. The demulsification effect of the lubricating oil can be well realized by designing the ion exchange resin filter element. The oil-dredging layer arranged on the heating rod can prolong the service life of the heating rod.
In an embodiment of the invention, the first oil pump, the vacuum pump, the second oil pump and the third oil pump are all mounted on the base. First oil pump, vacuum pump, second oil pump and third oil pump are installed on the base, can increase base weight, avoid the equipment to weigh down lightly.
In an embodiment of the present invention, the fine filter element includes a filter shell, a filter screen is disposed around the filter shell, the filter screen is a micron fiber filter material, and a sealing ring is disposed between the filter screen and the filter shell. The fine filter core adopts a micron fiber filter material with strong hydrophobicity and oleophobicity, so that oil and water can be effectively prevented from being entrained by high-speed airflow, and fine oil drops flowing down through the filter core are gathered at the lower end of the filter core sponge; meanwhile, the framework with good permeability and high strength is adopted, so that the resistance caused by passing is reduced; the combination point of the filter element and the filter shell adopts a reliable sealing ring, so that impurities are prevented from directly entering an oil outlet region without passing through the filter element.
As described above, the lubricating oil vacuum filter of the present invention has the following beneficial effects: the lubricating oil is sequentially subjected to impurity removal through a primary filter, a vacuum heater and a fine filter, so that the finally filtered lubricating oil is low in impurity content and bright in color; oil-water separation and multiple filtration are designed in the vacuum heater, so that the separation rate of the oil-water separation is improved, the working efficiency is high, and the operation is convenient; impurities and adsorption water are filtered through multiple filter elements, so that the demulsification effect is well realized, the filtering precision is high, and the cost is low; the vacuum heater has good atomization effect, the lubricating oil basically does not foam, the problem that the vacuum degree is reduced for breaking vacuum and preventing foaming is well avoided, and the water removal effect is good.
Drawings
Fig. 1 is a schematic view of the overall structure of a lubricating oil vacuum filter according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a lubricant flow path of the lubricant vacuum filter according to the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a primary filter of a lubricating oil vacuum oil filter in an embodiment of the invention.
Fig. 4 is a schematic structural diagram of a vacuum heater of a lubricating oil vacuum oil filter according to an embodiment of the invention.
Fig. 5 is a schematic diagram of a fine filter of a lubricating oil vacuum oil filter according to an embodiment of the present invention.
Fig. 6 is a schematic diagram showing a fine filter element of the lubricating oil vacuum oil filter according to the embodiment of the invention.
Fig. 7 is a schematic structural diagram of an air filter of a lubricating oil vacuum oil filter in an embodiment of the invention.
Fig. 8 is a schematic structural view of an oil filter case of the lubricating oil vacuum oil filter in the embodiment of the invention.
Description of the element reference numerals
1-oil filter case; 2-a base; 3-an oil inlet pipe; 4-an oil discharge pipe; 5-a primary filter, 501-a primary filter box, 502-a coarse filter element, 503-a first oil pump; 6-vacuum heater, 601-heating box, 602-first pipeline, 603-vacuum pump filter element, 604-ion exchange resin filter element, 605-vacuum pump, 606-steam outlet, 607-heating rod; 7-a condenser; 8-a second conduit; 9-an air filter; 10-a second oil pump; 11-fine filter, 1101-fine filter box, 1102-third pipeline, 1103-fine filter element, 1104-third oil pump, 1105-filter shell, 1106-filter screen and 1107-sealing ring; 12-a control panel; 13-electromagnetic valve.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1 to 8. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
The invention provides a lubricating oil vacuum oil filter, which comprises:
referring to fig. 1 and 8, in an oil filter case 1, the oil filter case 1 is installed on a base 2, an oil inlet pipe 3 is arranged at the top of the oil filter case 1, and an oil discharge pipe 4 is arranged at the bottom of the oil filter case 1; referring to fig. 8, the oil filter case 1 is a sandwich structure, and a buffer is filled in the middle of the sandwich structure;
referring to fig. 2 and 3, a primary filter 5, where the primary filter 5 is disposed inside the oil filter case 1, the primary filter 5 includes a primary filter tank 501, an oil inlet end of the primary filter tank 501 is communicated with the oil inlet pipe 3, a detachable coarse filter element 502 is disposed in the primary filter tank 501, and the primary filter tank 501 is connected to a first oil pump 503; the primary filter 5 is a double-box filter, and two primary filter boxes 501 of the double-box filter are communicated with each other through a pipeline;
referring to fig. 2 and 4, a vacuum heater 6, the vacuum heater 6 is disposed inside the oil filter case 1, the vacuum heater 6 includes a heating box 601, an oil inlet end of the heating box 601 is communicated with an oil outlet end of the primary filter case 501 through a first pipeline 602, and a detachable vacuum pump filter element 603 and an ion exchange resin filter element 604 are disposed in the heating box 601; the heating box 601 is connected with a vacuum pump 605; the top of the heating box 601 is provided with a steam outlet 606; a heating rod 607 is arranged in the middle of the heating box 601, and the heating rod 607 is electrically connected with the control panel 12; an oil-dredging layer is arranged on the heating rod 607; the ion exchange resin filter element 604 is arranged inside the vacuum pump filter element 603;
referring to fig. 2 and 7, in the condenser 7, the condenser 7 is communicated with the water vapor outlet 606 through a second pipeline 8, an air filter 9 is arranged on the condenser 7, and a second oil pump 10 is connected to the condenser 7; the air filter 9 is provided with a hollow area for filling with chemicals such as a moisture absorbent or an adsorbent.
Referring to fig. 2 and 5, in the fine filter 11, the fine filter 11 includes a fine filter tank 1101, an oil inlet end of the fine filter tank 1101 is connected to an oil outlet end of the heating tank 601 through a third pipeline 1102, a detachable fine filter 1103 is disposed in the fine filter tank 1101, the oil outlet end of the fine filter tank 1101 is communicated with an oil discharge pipe 4, and the oil discharge pipe 4 is connected to a third oil pump 1104; referring to fig. 6, the fine filter element 1103 includes a filter housing 1105, a filter screen 1106 is disposed around the filter housing 1105, the filter screen 1106 is a micro fiber filter material, and a sealing ring 1107 is disposed between the filter screen 1106 and the filter housing 1105;
referring to fig. 1, a control panel 12, wherein the control panel 12 is installed on the oil filter case 1, the control panel 12 is electrically connected to a power supply, the first oil pump 503, the vacuum pump 605, the second oil pump 10 and the third oil pump 1104 are all electrically connected to the control panel 12, and the first oil pump 503, the vacuum pump 605, the second oil pump 10 and the third oil pump 1104 are all installed on the base 2; referring to fig. 2, the oil inlet pipe 3, the first pipeline 602, the second pipeline 8, the third pipeline 1102 and the oil discharge pipe 4 are all provided with an electromagnetic valve 13, and the electromagnetic valve 13 is electrically connected with the control panel 12; the power supply and control panel 12 are connected in a conventional manner and are not shown.
The use process comprises the following steps: the power supply is turned on, then the electromagnetic valve 13 for controlling the oil inlet pipe 3 is turned on, the lubricating oil enters the primary filter tank 501 through the oil inlet pipe 3, the lubricating oil is filtered by the coarse filter element 502 and then enters the heating tank 601 through the first pipeline 602, the control button of the heating rod 607 is turned on, then the control button of the vacuum pump 605 is turned on, the lubricating oil is separated from oil and water in the heating tank 601 and is semi-atomized, water vapor separated from oil and water enters the condenser 7 through the water vapor outlet 606 and is condensed into water, the lubricating oil is filtered by the ion exchange resin filter element 604 and the vacuum pump filter element 603 in sequence, the lubricating oil enters the fine filter tank 1101 through the third pipeline 1102, and the lubricating oil after vacuum filtration is obtained through the.
In conclusion, the invention filters impurities and adsorbed water through multiple filter elements, well realizes the demulsification effect, and has high filtering precision and low cost; the vacuum heater 6 has good atomization effect, the lubricating oil basically does not foam, the problem that the vacuum degree is reduced for breaking vacuum and preventing foaming is well avoided, and the water removal effect is good. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. A lubricating oil vacuum filter, characterized in that lubricating oil vacuum filter includes:
the oil filter box comprises an oil filter box (1), wherein the oil filter box (1) is installed on a base (2), an oil inlet pipe (3) is arranged at the top of the oil filter box (1), and an oil discharge pipe (4) is arranged at the bottom of the oil filter box (1);
the primary filter (5) is arranged inside the oil filter case (1), the primary filter (5) comprises a primary filter box (501), the oil inlet end of the primary filter box (501) is communicated with the oil inlet pipe (3), a detachable coarse filter element (502) is arranged in the primary filter box (501), and the primary filter box (501) is connected with a first oil pump (503);
the vacuum heater (6) is arranged inside the oil filter cabinet (1), the vacuum heater (6) comprises a heating cabinet (601), the oil inlet end of the heating cabinet (601) is communicated with the oil outlet end of the primary filter cabinet (501) through a first pipeline (602), and a detachable vacuum pump filter element (603) and an ion exchange resin filter element (604) are arranged in the heating cabinet (601); the heating box (601) is connected with a vacuum pump (605); the top of the heating box (601) is provided with a steam outlet (606);
the condenser (7) is communicated with the water vapor outlet (606) through a second pipeline (8), an air filter (9) is arranged on the condenser (7), and a second oil pump (10) is connected to the condenser (7);
the fine filter (11), the fine filter (11) comprises a fine filter box (1101), the oil inlet end of the fine filter box (1101) is connected with the oil outlet end of the heating box (601) through a third pipeline (1102), a detachable fine filter element (1103) is arranged in the fine filter box (1101), the oil outlet end of the fine filter box (1101) is communicated with an oil discharge pipe (4), and the oil discharge pipe (4) is connected with a third oil pump (1104);
the oil filter is characterized by comprising a control panel (12), wherein the control panel (12) is installed on the oil filter case (1), the control panel (12) is electrically connected with a power supply, and the first oil pump (503), the vacuum pump (605), the second oil pump (10) and the third oil pump (1104) are electrically connected with the control panel (12).
2. The lubricating oil vacuum filter according to claim 1, characterized in that: the oil filter case (1) is of a sandwich structure, and a buffer is filled in the middle of the sandwich structure.
3. The lubricating oil vacuum filter according to claim 1, characterized in that: all install solenoid valve (13) on advancing oil pipe (3), first pipeline (602), second pipeline (8), third pipeline (1102) and oil extraction pipe (4), solenoid valve (13) with control panel (12) electric connection.
4. The lubricating oil vacuum filter according to claim 1, characterized in that: the primary filter (5) is a double-box filter, and two primary filter boxes (501) of the double-box filter are communicated with each other through a pipeline.
5. The lubricating oil vacuum filter according to claim 1, characterized in that: the middle part of the heating box (601) is provided with a heating rod (607), and the heating rod (607) is electrically connected with the control panel (12); an oil-dredging layer is arranged on the heating rod (607); the ion exchange resin filter cartridge (604) is disposed inside the vacuum pump filter cartridge (603).
6. The lubricating oil vacuum filter according to claim 1, characterized in that: the first oil pump (503), the vacuum pump (605), the second oil pump (10) and the third oil pump (1104) are all installed on the base (2).
7. The lubricating oil vacuum filter according to claim 1, characterized in that: the fine filter element (1103) comprises a filter shell (1105), filter screens (1106) are arranged on the periphery of the filter shell (1105), the filter screens (1106) are micron fiber filter materials, and sealing rings (1107) are arranged between the filter screens (1106) and the filter shell (1105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910779832.0A CN112403094A (en) | 2019-08-22 | 2019-08-22 | Lubricating oil vacuum oil filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910779832.0A CN112403094A (en) | 2019-08-22 | 2019-08-22 | Lubricating oil vacuum oil filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112403094A true CN112403094A (en) | 2021-02-26 |
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ID=74778951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910779832.0A Pending CN112403094A (en) | 2019-08-22 | 2019-08-22 | Lubricating oil vacuum oil filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN112403094A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112877127A (en) * | 2021-04-21 | 2021-06-01 | 胡平 | Pneumatic type lubricating oil recycling equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698499A (en) * | 2012-06-05 | 2012-10-03 | 陈太宏 | Vacuum oil purifier |
| CN206418088U (en) * | 2017-01-10 | 2017-08-18 | 西北民族大学 | A kind of production system of lubricating oil |
| CN207641136U (en) * | 2017-12-13 | 2018-07-24 | 哈尔滨理工大学 | A kind of hydrodynamic journal liquid polymers pump oil machine device for filtering impurities |
-
2019
- 2019-08-22 CN CN201910779832.0A patent/CN112403094A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698499A (en) * | 2012-06-05 | 2012-10-03 | 陈太宏 | Vacuum oil purifier |
| CN206418088U (en) * | 2017-01-10 | 2017-08-18 | 西北民族大学 | A kind of production system of lubricating oil |
| CN207641136U (en) * | 2017-12-13 | 2018-07-24 | 哈尔滨理工大学 | A kind of hydrodynamic journal liquid polymers pump oil machine device for filtering impurities |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112877127A (en) * | 2021-04-21 | 2021-06-01 | 胡平 | Pneumatic type lubricating oil recycling equipment |
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Application publication date: 20210226 |