CN116286178A - Oil-residue separation and filtration system - Google Patents
Oil-residue separation and filtration system Download PDFInfo
- Publication number
- CN116286178A CN116286178A CN202310307442.XA CN202310307442A CN116286178A CN 116286178 A CN116286178 A CN 116286178A CN 202310307442 A CN202310307442 A CN 202310307442A CN 116286178 A CN116286178 A CN 116286178A
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- Prior art keywords
- bin
- filtering
- oil
- filter
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- 238000001914 filtration Methods 0.000 title claims abstract description 160
- 238000000926 separation method Methods 0.000 title claims abstract description 33
- 239000004519 grease Substances 0.000 claims abstract description 42
- 239000007787 solid Substances 0.000 claims abstract description 19
- 238000005303 weighing Methods 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims description 13
- 239000010802 sludge Substances 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000000977 initiatory effect Effects 0.000 claims description 2
- 238000011045 prefiltration Methods 0.000 claims 5
- 230000011664 signaling Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 15
- 235000019197 fats Nutrition 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 235000019737 Animal fat Nutrition 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 208000006670 Multiple fractures Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/008—Refining fats or fatty oils by filtration, e.g. including ultra filtration, dialysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
Abstract
The utility model provides an oil residue separation filtration system, including elementary filtration storehouse, just strain the surge bin, secondary filter storehouse, tertiary filtration storehouse and control system, elementary filtration storehouse and just strain the surge bin intercommunication, just strain the surge bin respectively with secondary filter storehouse and tertiary filtration storehouse intercommunication, and be equipped with first automatically controlled valve between just straining the surge bin and the secondary filter storehouse, just strain and be equipped with the second automatically controlled valve between surge bin and the tertiary filter storehouse, all be equipped with the filter in elementary, secondary and the tertiary filtration storehouse, be provided with the weighing device that can detect elementary filter pressure in the elementary filtration storehouse, weighing device, first automatically controlled valve, second automatically controlled valve all are connected with control system electricity, control system receives the pressure variation signal of elementary filter that weighing device gathered around filtering the grease, discern the grease solid content level according to pressure variation signal, and control the flow direction of the grease of just straining temporarily in the surge bin through the break-make of control first automatically controlled valve and the second automatically controlled valve according to the grease solid content level that discerns.
Description
Technical Field
The invention relates to the technical field of animal fat processing, in particular to an oil-residue separation and filtration system.
Background
In animal fat processing, need carry out oil residue separation and filter to animal fat, the direct use fine filtration hole filters grease speed slowly and the filter plate is easy to block up, in order not to influence filtration efficiency, can carry out the step-by-step filtration to the grease on the production line, thereby the grease raw materials of different solid impurity contents probably selected filtration level is different, this just needs the staff just to preliminary confirm grease raw materials solid impurity content condition or level according to the detection of grease raw materials source or to the grease raw materials before the production, for reasonable selection filtration level, under this condition, the procedure in the course of working increases, workman's operation is corresponding loaded down with trivial details yet.
Disclosure of Invention
In order to solve the problems of the background technology, the invention provides an oil-residue separation filtering system, which can realize automatic selection of a filtering level by providing an on-line detection mode for grease raw materials on one hand and facilitate control of a worker on a production process by providing a plurality of work starting modes on the other hand.
The technical scheme adopted by the invention is as follows:
the utility model provides an oil residue separation filtering system, includes primary filtration storehouse, just strain the surge bin, secondary filter storehouse, tertiary filtration storehouse and control system, primary filtration storehouse with just strain the surge bin and be linked together through the connecting channel, just strain the surge bin respectively with secondary filter storehouse with tertiary filter storehouse is linked together through the connecting channel, and just strain the surge bin with connecting channel between the secondary filter storehouse is equipped with first electrically controlled valve, just strain the surge bin with connecting channel between the tertiary filter storehouse is equipped with the second electrically controlled valve, be equipped with primary filter in the primary filtration storehouse, be equipped with the secondary filter board in the tertiary filter storehouse, be equipped with tertiary filter in the tertiary filter storehouse, be provided with in the primary filter storehouse and be able to detect primary filter pressure's weighing device, weighing device first electrically controlled valve the second electrically controlled valve all with control system is linked together, control system receives the weighing device's the first electrically controlled valve with the first electrically controlled valve is equipped with the second electrically controlled valve is equipped with the first electrically controlled valve of first filter board before filtering the pressure variation of grease and the first grade of grease of level of grease and the first grade of grease level of grease change of the control flow through the first grade of electrical control valve.
Preferably, the oil and residue separation filter system is as described above, and the oil and residue solid content level is determined according to the range of pressure variation difference values of the primary filter plate before and after filtering oil and residue.
Preferably, the oil and slag separation and filtration system is as described above, and the weighing device is a pressure sensor arranged below the primary filter plate.
Preferably, the oil and slag separation filter system is as described above, and the weighing device is a set of pressure sensors arranged below the primary filter plate.
Preferably, the primary filter cartridge has heating and temperature control functions as described above for the oil and sludge separation filter system.
Preferably, as described above, the third stage filter cartridge is connected to the fourth stage filter cartridge through a connecting channel, or the third stage filter cartridge is connected to the storage cartridge through a connecting channel.
Preferably, in the oil-residue separation filtering system, a third electric control valve is arranged in a connecting channel between the primary filtering bin and the primary filtering surge bin.
Preferably, as mentioned above, the oil residue separating and filtering system, the control system provides three optional operation starting modes of "self-detection mode starting", "self-secondary filtering starting", "self-tertiary filtering starting", and selects "self-detection mode starting", then the control system executes the identification of the solid content level of the oil and the flow direction control process of the temporarily stored oil, selects "self-secondary filtering starting", then the control system directly controls the first electric control valve to be opened, the second electric control valve is closed, the oil directly flows through the primary filtering bin from the primary filtering bin and then sequentially enters the secondary filtering bin and the tertiary filtering bin, and selects "self-tertiary filtering starting", then the control system directly controls the second electric control valve to be opened, the first electric control valve to be closed, and the oil directly flows through the primary filtering bin from the primary filtering bin and then enters the tertiary filtering bin.
Preferably, the oil and sludge separation filter system is selected among three modes of operation initiation by a control panel of the control system as described above.
Preferably, as described above, the oil and sludge separation and filtration system selects "self-test mode on" and after one charge and filtration is completed, the control system memorizes the flow direction selection result of this one oil and performs the result by default in the subsequent charge until the operator manually changes the operation start mode.
The beneficial effects are that:
the oil-residue separation filtering system provided by the invention can be used for directly scheduling the subsequent required filtering level based on the primary filtering result in the primary filtering link without determining or detecting the solid impurity content condition of the oil raw material in advance, and realizing the automatic selection of the filtering level by providing an online detection mode of the oil raw material, and further facilitating the control of workers on the production process by providing a plurality of work starting modes.
Drawings
FIG. 1 is a schematic diagram of the oil-residue separation filter system of the present invention.
FIG. 2 is a schematic diagram of the operation start mode selection according to the present invention.
In the figure: a primary filter house 1; a primary filtration buffer bin 2; a secondary filter bin 3; a three-stage filter bin 4; a four-stage filter bin 5; a storage bin 6; a primary filter plate 7; a secondary filter plate 8; and a three-stage filter plate 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1
Referring to fig. 1, fig. 1 is a schematic diagram of an oil-residue separation filter system according to the present invention. The embodiment provides an oil-residue separation filtering system, which is a scheme implemented in order to directly schedule a subsequent required filtering level based on a primary filtering result in a primary filtering link without determining or detecting the solid impurity content condition of a grease raw material in advance in the oil-residue separation filtering operation of grease.
Specifically, as shown in fig. 1, an oil-residue separation filtering system comprises a primary filtering bin 1, a primary filtering buffer bin 2, a secondary filtering bin 3, a tertiary filtering bin 4 and a control system, wherein the primary filtering bin 1 and the primary filtering buffer bin 2 are communicated through a connecting channel, the primary filtering buffer bin 2 is respectively communicated with the secondary filtering bin 3 and the tertiary filtering bin 4 through the connecting channel, the secondary filtering bin 3 and the tertiary filtering bin 4 are communicated through the connecting channel, and the connecting channel between the primary filtering buffer bin 2 and the secondary filtering bin 3 is provided with a first electric control valve, and the connecting channel between the primary filtering buffer bin 2 and the tertiary filtering bin 4 is provided with a second electric control valve.
Further, a primary filter plate 7 is arranged in the primary filter bin 1, a secondary filter plate 8 is arranged in the secondary filter bin 3, and a tertiary filter plate 9 is arranged in the tertiary filter bin 4.
It is apparent that the filter pores should be gradually smaller from the primary filter plate 7 to the secondary filter plate 8 to the tertiary filter plate 9.
Further, a weighing device capable of detecting the pressure of the primary filter plate 7 is arranged in the primary filter bin 1. The invention mainly aims to reflect and identify the content of solid impurities in the oil raw material by means of on-line detection of the primary filtering result of the oil raw material, thereby realizing automatic selection of two subsequent main filtering levels (secondary filtering and tertiary filtering). Therefore, in order to achieve the above purpose, the weighing device, the first electric control valve and the second electric control valve are all electrically connected with the control system, the control system receives pressure change signals of the primary filter plate 7 before and after filtering grease collected by the weighing device, identifies the solid content level of the grease according to the pressure change signals, and controls the flow direction of the grease temporarily stored in the primary filtering buffer bin 2 by controlling the on-off of the first electric control valve and the second electric control valve according to the identified solid content level of the grease.
When the oil and fat raw materials loaded into the primary filter bin 1 are quantified or basically quantified during operation, large impurities such as broken bones and block residues are easily captured by the primary filter plate 7 of the primary filter bin 1, the oil and fat solid content level can be determined according to the range of the pressure change difference value of the primary filter plate 7 before and after filtering the oil and fat only by obtaining the pressure change difference value or equivalent comparison parameters such as weight (namely, the display unit can be kept as cow: N or converted into gram: g) according to the pressure change signals of the primary filter plate 7 before and after filtering the oil and fat, the system can carry out comparison judgment of the pressure change difference value through a preset threshold value, when the pressure change difference value does not reach the set threshold value, the oil and fat cleanliness is identified as high, the system can directly select to carry out tertiary filtration, and when the pressure change difference value reaches the set threshold value, the oil and fat cleanliness is identified as low, the oil and fat cleanliness is required to be filtered through secondary filtration and then tertiary filtration.
Before the control system recognizes that the grease needs to be directly subjected to three-stage filtration or needs to be subjected to two-stage filtration and three-stage filtration successively, the grease flowing out of the primary filtration bin 1 can be buffered due to the existence of the primary filtration buffer bin 2.
The control system then controls the flow direction of the grease temporarily stored in the primary filtering surge bin 2 by controlling the on-off of the first electric control valve and the second electric control valve according to the identified grease solid content level, specifically, when the secondary filtering and the tertiary filtering are sequentially carried out on the grease, the control system controls the first electric control valve between the primary filtering surge bin 2 and the secondary filtering bin 3 to be opened, and keeps the second electric control valve between the primary filtering surge bin 2 and the tertiary filtering bin 4 to be closed, and the grease temporarily stored in the primary filtering surge bin 2 sequentially enters the secondary filtering bin 3 and the tertiary filtering bin 4 due to the fact that the secondary filtering bin 3 and the tertiary filtering bin 4 are communicated.
When the grease is selected to be directly filtered in three stages, the control system controls the second electric control valve between the primary filtering surge bin 2 and the three-stage filtering bin 4 to be opened, and keeps the first electric control valve between the primary filtering surge bin 2 and the two-stage filtering bin 3 closed, so that the grease buffered in the primary filtering surge bin 2 directly enters the three-stage filtering bin 4.
The primary filter house 1 in this embodiment has heating and temperature control functions, and the weighing device is a set of pressure sensors arranged below the primary filter plate 7.
The grease flowing out from the three-stage filtering bin 4 can directly enter the storage bin 6 for temporary storage for later use, but the embodiment is not necessarily limited, and if necessary, higher-level filtering can be performed through one four-stage filtering bin 5, so in the embodiment, as shown in fig. 1, the three-stage filtering bin 4 can be communicated with the four-stage filtering bin 5 through a connecting channel, and can also be communicated with the storage bin 6 through the connecting channel.
In fig. 1 of the present embodiment, only the electric control valve mentioned in the main functional principle is illustrated, but necessary electric control valves or other valve types or display instruments may be added at any non-illustrated part according to the need, for example, a third electric control valve is provided in the connecting channel between the primary filter cartridge 1 and the primary filter surge cartridge 2 to control the timing of the grease flowing from the primary filter cartridge 1 to the primary filter surge cartridge 2.
Example 2
This embodiment is a further example of the operation start mode of the oil-residue separation filter system based on embodiment 1.
The exemplary scheme is shown in fig. 2, and can be selected from different operation starting modes through a control panel of the control system, and in particular, the embodiment provides three selectable operation starting modes of 'self-detection mode starting', 'self-secondary filtering starting', 'self-tertiary filtering starting' for oil residue filtering.
Wherein, when the self-detection mode is selected to start, the control system executes the identification of the solid content level of the grease and the flow direction control process of the temporarily stored grease, and in the working mode, the grease is temporarily stored by the aid of the primary filtering buffer bin 2.
Unlike the above-mentioned "self-detection mode start", when "self-secondary filtration start" is selected, the control system directly controls the first electrically controlled valve between the primary filtration surge bin 2 and the secondary filtration surge bin 3 to be opened, the second electrically controlled valve between the primary filtration surge bin 2 and the tertiary filtration surge bin 4 to be closed, and the grease directly flows through the primary filtration surge bin 2 from the primary filtration surge bin 1, then sequentially enters the secondary filtration surge bin 3 and the tertiary filtration surge bin 4, and then is subjected to subsequent filtration or storage.
When the self-tertiary filtration is started, the control system directly controls the second electric control valve between the primary filtration surge bin 2 and the tertiary filtration bin 4 to be opened, the first electric control valve between the primary filtration surge bin 2 and the secondary filtration bin 3 is closed, and grease directly flows through the primary filtration surge bin 2 from the primary filtration bin 1 and then enters the tertiary filtration bin 4.
Preferably, with the control system provided in this embodiment, after the "self-detection mode is selected and the charging and filtering are completed once, the control system memorizes the flow direction selection result of the grease and executes the result by default in the subsequent charging, so as to facilitate the direct filtering production of the continuous same batch of grease raw materials until the operator manually changes the work starting mode.
It can be seen that, through the oil residue separation filtering system provided by the above embodiments of the present invention, the content of solid impurities in the oil raw material does not need to be determined or detected in advance, but the filtering level required subsequently is directly scheduled based on the primary filtering result in the primary filtering link, and the automatic selection of the filtering level is realized by providing an on-line detection mode for the oil raw material, so that the oil residue separation filtering system has a good effect in terms of lightening the burden of classifying or detecting the oil raw material, saving the program in the processing process, and facilitating the distribution and classification operation of workers, and further facilitates the flexible control of the workers on the production process by providing various starting modes.
In the foregoing, only the preferred embodiments of the present invention are described, and any person skilled in the art should, within the scope of the present disclosure, be able to substitute or change the technical solution according to the present invention and the inventive concept thereof, and should be covered by the protection scope of the present invention.
Claims (10)
1. The utility model provides an oil residue separation filtering system, its characterized in that includes elementary filter house (1), prefilter surge bin (2), secondary filter house (3), tertiary filter house (4) and control system, elementary filter house (1) with prefilter surge bin (2) are linked together through the connecting channel, prefilter surge bin (2) respectively with secondary filter house (3) with tertiary filter house (4) are linked together through the connecting channel, secondary filter house (3) with tertiary filter house (4) are linked together through the connecting channel to, prefilter surge bin (2) with connecting channel between secondary filter house (3) is equipped with first electrically controlled valve, connecting channel between prefilter surge bin (2) and tertiary filter house (4) is equipped with the second electrically controlled valve, be equipped with primary filter plate (7) in elementary filter house (1), be equipped with secondary filter plate (8) in secondary filter house (4) respectively, be equipped with tertiary filter plate (9) in tertiary filter house (4), be provided with in elementary filter house (2) with the weighing device (7) and the pressure of weighing device can be connected with the second electrically controlled valve (7) the first electrically controlled valve, the pressure change of the first electrically controlled valve is all the control system, and identifying the solid content level of the grease according to the pressure change signal, and controlling the flow direction of the grease temporarily stored in the primary filtering surge bin (2) by controlling the on-off of the first electric control valve and the second electric control valve according to the identified solid content level of the grease.
2. An oil and sludge separation and filtration system as claimed in claim 1 wherein the solids level of the oil and sludge is determined based on the range of differential pressure values of the primary filter plate (7) before and after filtering the oil and sludge.
3. An oil and sludge separation and filtration system according to claim 1, characterized in that the weighing means is a pressure sensor arranged below the primary filter plate (7).
4. A sludge separation filter system as claimed in claim 3, wherein the weighing means is a set of pressure sensors arranged below the primary filter plate (7).
5. An oil and residue separation filter system according to claim 1, characterized in that the primary filter house (1) has heating and temperature control functions.
6. The oil and slag separation and filtration system according to claim 1, wherein the three-stage filter bin (4) is communicated with a four-stage filter bin (5) through a connecting channel, or the three-stage filter bin (4) is communicated with a storage bin (6) through a connecting channel.
7. The oil and slag separation and filtration system according to claim 1, wherein a third electric control valve is arranged in a connecting channel between the primary filter bin (1) and the primary filter surge bin (2).
8. The oil and slag separation filtering system according to claim 1, wherein the control system provides three selectable operation starting modes of 'self-detection mode starting', 'self-secondary filtering starting', 'self-tertiary filtering starting', and 'self-detection mode starting' is selected, the control system executes the identification of the solid content level of the oil and the flow direction control process of the temporarily stored oil, the 'self-secondary filtering starting' is selected, the control system directly controls the first electric control valve to be opened, the second electric control valve to be closed, the oil directly flows from the primary filtering bin (1) to the primary filtering buffer bin (2) and then sequentially enters the secondary filtering bin (3) and the tertiary filtering bin (4), the 'self-tertiary filtering starting' is selected, the control system directly controls the second electric control valve to be opened, the first electric control valve is closed, and the oil directly flows from the primary filtering bin (1) to the primary filtering buffer bin (2) and then enters the tertiary filtering bin (4).
9. The oil and sludge separation filter system of claim 8 wherein the control panel of the control system is configured to select among three modes of operation initiation.
10. The oil and sludge separation and filtration system of claim 8 wherein upon selection of the "self-test mode on" and completion of a charge and filtration, the control system memorizes the flow direction selection result for the oil and the like and performs the result by default in the subsequent charge until the operator manually changes the work on mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310307442.XA CN116286178B (en) | 2023-03-27 | 2023-03-27 | Oil-residue separation and filtration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310307442.XA CN116286178B (en) | 2023-03-27 | 2023-03-27 | Oil-residue separation and filtration system |
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| Publication Number | Publication Date |
|---|---|
| CN116286178A true CN116286178A (en) | 2023-06-23 |
| CN116286178B CN116286178B (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310307442.XA Active CN116286178B (en) | 2023-03-27 | 2023-03-27 | Oil-residue separation and filtration system |
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| JP2004091782A (en) * | 2002-08-16 | 2004-03-25 | Nisshin Oillio Ltd | Method for recycling oil cake produced in vegetable oil and fat manufacturing process |
| CN205241631U (en) * | 2015-12-23 | 2016-05-18 | 安徽华宇调味食品有限公司 | Dregs of fat recovery unit is used in sesame oil production |
| CN206204033U (en) * | 2016-11-16 | 2017-05-31 | 苏州凯宇包装材料有限公司 | A kind of multistage filtering purifier |
| CN207694381U (en) * | 2017-11-09 | 2018-08-07 | 佛山市顺德区振南润德印刷有限公司 | A kind of fountain solution filtering device |
| CN211968517U (en) * | 2020-02-17 | 2020-11-20 | 汕头市禅泰化工有限公司 | Oil residue separator |
| CN114191870A (en) * | 2021-12-16 | 2022-03-18 | 浙江壳邦力特油脂有限公司 | Multistage filtering mechanism for lubricating oil production |
| CN216677346U (en) * | 2021-12-10 | 2022-06-07 | 罗平金丰油脂有限公司 | Tertiary filter equipment is used in rapeseed oil production |
| CN114618215A (en) * | 2022-04-12 | 2022-06-14 | 自然资源部第二海洋研究所 | Automatic seawater sediment grading and filtering equipment and using method thereof |
-
2023
- 2023-03-27 CN CN202310307442.XA patent/CN116286178B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004091782A (en) * | 2002-08-16 | 2004-03-25 | Nisshin Oillio Ltd | Method for recycling oil cake produced in vegetable oil and fat manufacturing process |
| CN205241631U (en) * | 2015-12-23 | 2016-05-18 | 安徽华宇调味食品有限公司 | Dregs of fat recovery unit is used in sesame oil production |
| CN206204033U (en) * | 2016-11-16 | 2017-05-31 | 苏州凯宇包装材料有限公司 | A kind of multistage filtering purifier |
| CN207694381U (en) * | 2017-11-09 | 2018-08-07 | 佛山市顺德区振南润德印刷有限公司 | A kind of fountain solution filtering device |
| CN211968517U (en) * | 2020-02-17 | 2020-11-20 | 汕头市禅泰化工有限公司 | Oil residue separator |
| CN216677346U (en) * | 2021-12-10 | 2022-06-07 | 罗平金丰油脂有限公司 | Tertiary filter equipment is used in rapeseed oil production |
| CN114191870A (en) * | 2021-12-16 | 2022-03-18 | 浙江壳邦力特油脂有限公司 | Multistage filtering mechanism for lubricating oil production |
| CN114618215A (en) * | 2022-04-12 | 2022-06-14 | 自然资源部第二海洋研究所 | Automatic seawater sediment grading and filtering equipment and using method thereof |
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|---|---|
| CN116286178B (en) | 2024-02-02 |
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