CN110791380A - Rapeseed oil refining device capable of efficiently removing impurities - Google Patents
Rapeseed oil refining device capable of efficiently removing impurities Download PDFInfo
- Publication number
- CN110791380A CN110791380A CN201911073517.2A CN201911073517A CN110791380A CN 110791380 A CN110791380 A CN 110791380A CN 201911073517 A CN201911073517 A CN 201911073517A CN 110791380 A CN110791380 A CN 110791380A
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- Prior art keywords
- box body
- rapeseed oil
- refining device
- box
- removing impurities
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- 235000019484 Rapeseed oil Nutrition 0.000 title claims abstract description 37
- 238000007670 refining Methods 0.000 title claims abstract description 29
- 239000012535 impurity Substances 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims description 28
- 235000019198 oils Nutrition 0.000 claims description 22
- 238000005192 partition Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 17
- 239000010779 crude oil Substances 0.000 description 3
- 235000019519 canola oil Nutrition 0.000 description 2
- 239000000828 canola oil Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 239000008157 edible vegetable oil Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 240000002791 Brassica napus Species 0.000 description 1
- 235000004977 Brassica sinapistrum Nutrition 0.000 description 1
- DPUOLQHDNGRHBS-UHFFFAOYSA-N Brassidinsaeure Natural products CCCCCCCCC=CCCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-UHFFFAOYSA-N 0.000 description 1
- URXZXNYJPAJJOQ-UHFFFAOYSA-N Erucic acid Natural products CCCCCCC=CCCCCCCCCCCCC(O)=O URXZXNYJPAJJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 239000010636 coriander oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- DPUOLQHDNGRHBS-KTKRTIGZSA-N erucic acid Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-KTKRTIGZSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000011803 sesame oil Nutrition 0.000 description 1
- 239000008159 sesame oil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
- B01D29/356—Self-supporting filtering elements arranged for outward flow filtration open-ended, the arrival of the mixture to be filtered and the discharge of the concentrated mixture are situated on both opposite sides of the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Microbiology (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fats And Perfumes (AREA)
- Edible Oils And Fats (AREA)
Abstract
The invention relates to a rapeseed oil refining device capable of efficiently removing impurities, which belongs to the technical field of rapeseed oil production equipment and comprises a first box body, wherein a heating pipe is fixedly arranged on the inner wall of the first box body; according to the invention, through setting multiple filtering matched negative pressure, the refining efficiency is improved, pollution generated in the refining process is avoided, and meanwhile, the residual rapeseed oil after refining can be separated and recovered, so that the waste is reduced, the impurity removal effect is good, the cost is reduced, and the method is more practical.
Description
Technical Field
The invention relates to the technical field of rapeseed oil production equipment, in particular to a rapeseed oil refining device capable of efficiently removing impurities.
Background
Rapeseed oil is commonly called rapeseed oil, also called rapeseed oil, coriander oil, canola oil, sesame oil and canola oil, and is edible oil squeezed from rapeseed. The rapeseed oil has certain efficacies of softening blood vessels and delaying senility, has high absorptivity of 99% to the rapeseed oil by human bodies, and is one of the main edible oils in China.
Rapeseed oil needs to be squeezed when in production, the crude oil prepared needs to be further refined, the conventional refining process usually adopts high-temperature heating to refine in order to avoid adding auxiliaries such as edible alkali, and the impurities need to be filtered and removed before refining, and the conventional refining device has the defects of low filtering speed, low impurity removal efficiency and influence on production efficiency.
Disclosure of Invention
The invention aims to provide a rapeseed oil refining device capable of efficiently removing impurities, and the rapeseed oil refining device is used for solving the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a rapeseed oil refining device capable of efficiently removing impurities comprises a first box body, wherein a heating pipe is fixedly installed on the inner wall of the first box body, an agitating mechanism is installed in the first box body, a second filter screen is installed at the bottom of the agitating mechanism, the upper end of the first box body is connected with an air pump through an air pipe, the air pump is fixedly installed on the outer side of the first box body, a second box body is further fixedly installed on the outer side of the first box body, a filter chamber is formed in the second box body, a feed inlet is formed in the upper end of the box body, a sealing plug is installed in the feed inlet, a partition plate is fixedly installed in the filter chamber, a through hole is formed in the partition plate, a first filter screen is fixedly installed at the upper end of the partition plate, an inlet and an outlet are formed in the bottom of the second box body, an, valves are arranged in the oil outlet, the slag outlet, the inlet, the oil inlet and the through hole.
As a further technical scheme of the invention: the valve is an electromagnetic valve.
As a further technical scheme of the invention: the first filter screen comprises a first shrinkage screen and a second shrinkage screen fixedly connected with the first shrinkage screen, and the bottom of the second shrinkage screen is matched with the through hole.
As a further technical scheme of the invention: the stirring mechanism comprises a stirring shaft, wherein a stirring blade fixedly connected with the stirring shaft is sleeved outside the stirring shaft, the upper end of the stirring shaft penetrates through the first box body and is rotatably connected with the first box body, a motor is fixedly mounted at the upper end of the box body, and the output end of the motor is connected with the upper end of the stirring shaft.
As a further technical scheme of the invention: the bottom of the first box body is fixedly provided with a supporting leg.
As a further technical scheme of the invention: an oil inlet pipe is fixedly arranged in the sealing plug.
As a further technical scheme of the invention: and a purifier is fixedly arranged on the outer side of the first box body and is connected with the air pump.
As a further technical scheme of the invention: the outer side of the first box body is fixedly provided with a control box, and the control box is electrically connected with the purifier, the valve, the air suction pump and the motor respectively.
Compared with the prior art, the invention has the beneficial effects that: through setting up multiple filtration cooperation negative pressure and not only improved concise efficiency, avoided the pollution that produces among the concise process moreover, can also separate the recovery to remaining rapeseed oil after concise simultaneously, reduced the waste, it is effectual to go miscellaneous, the cost is reduced, and is more practical.
Drawings
FIG. 1 is a front sectional view of a rapeseed oil refining device for efficiently removing impurities;
fig. 2 is a front sectional view of a first filter screen in the rapeseed oil refining device for efficiently removing impurities;
fig. 3 is a schematic structural diagram of a second shrinkage net in the rapeseed oil refining device for efficiently removing impurities;
fig. 4 is another main sectional view of the rapeseed oil refining device for efficiently removing impurities.
In the figure: 1-a first box body, 2-a second box body, 3-a feed inlet, 4-a first filter screen, 5-a clapboard, 6-an oil inlet, 7-a filter cavity, 8-an inlet, 9-an outlet, 10-a motor, 11-an air pipe, 12-an air pump, 13-a heating pipe, 14-a stirring shaft, 15-a stirring blade, 16-a second filter screen, 17-an oil outlet, 18-a supporting leg, 19-a valve, 20-a slag outlet, 21-a first contraction net, 22-a second contraction net, 23-an oil inlet pipe, 24-a purifier and 25-a control box.
Detailed Description
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The technical solution 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
The rapeseed oil refining device capable of efficiently removing impurities, as shown in fig. 1, 2 and 3, comprises a first box body 1, wherein a heating pipe 13 is fixedly installed on the inner wall of the first box body 1, a stirring mechanism is installed in the first box body 1, and heating and stirring are carried out by matching the stirring mechanism and the heating pipe 13, so that volatile substances such as erucic acid in the rapeseed oil can be removed, and the quality is improved; the bottom of the stirring mechanism is provided with a second filter screen 16, and solid impurities which can enter are further filtered by the second filter screen 16, so that oil products are guaranteed; the upper end of the first box body 1 is connected with an air pump 12 through an air pipe 11, negative pressure can be formed by arranging the air pump 12, the filtering speed is improved, volatile gas can be led out, and the refining effect is good; the air pump 12 is fixedly arranged on the outer side of the first box body 1, a second box body 2 is also fixedly arranged on the outer side of the first box body 1, a filter cavity 7 is formed in the second box body 2, a feed inlet 3 is formed in the upper end of the box body 1, a sealing plug is arranged in the feed inlet 3, a partition plate 5 is fixedly arranged in the filter cavity 7, a through hole is formed in the partition plate 5, a first filter screen 4 is fixedly arranged at the upper end of the partition plate 5, the oil inlet is preliminarily filtered by the second box body 2 with the first filter screen 4, the sealing plug is closed after crude oil is added, and the air pump 12 is opened at the moment to filter the crude oil through the first filter screen 4; an inlet 8 and an outlet 9 are formed in the bottom of the second box body 2, an oil inlet 6 and a slag outlet 20 which are communicated with the filter cavity 7 are formed in the first box body 1, the primarily filtered rapeseed oil enters the first box body 1 through the oil inlet 6, and the rest filter residues fall into the bottom of the filter cavity 7 from the through hole; the rapeseed oil is discharged into the bottom of the filter cavity 7 from the slag outlet 20 after being refined in the box body 1 to be mixed with the filter residue filtered for the first time, at the moment, water is added from the inlet 8, and due to different specific gravities, the residual rapeseed oil is separated from the water and the filter residue, so that the residual rapeseed oil can be recycled, the waste is reduced, and the rapeseed oil can be extracted from the inlet 8 during separation, can be discharged from the outlet 9, or can be combined with the filter residue; an oil outlet 17 is arranged at the bottom of the box body 1, valves 19 are arranged in the oil outlet 17, the slag outlet 20, the outlet 9, the inlet 8, the oil inlet 6 and the through hole, isolation is carried out by arranging the valves 19 to ensure that the inlets and the outlets can be orderly carried out so as to finish refining, and refined rapeseed oil is discharged from the oil outlet 17.
Furthermore, the valve 19 is an electromagnetic valve, so that automatic control is convenient; first filter screen 4 includes first shrink net 21 and rather than fixed connection's second shrink net 22, second shrink net 22 bottom cooperatees with the through-hole, leads to and sets up two shrink net cooperations, and filter residue after will filtering can all be followed and discharged filter chamber 7 bottom in the through-hole, has avoided remaining.
Further, the stirring mechanism comprises a stirring shaft 14, the stirring blade 15 fixedly connected with the stirring shaft 14 is sleeved outside the stirring shaft 14, the upper end of the stirring shaft 14 penetrates through the first box body 1 and is connected with the stirring shaft in a rotating mode, a motor 10 is fixedly mounted at the upper end of the box body 1, the output end of the motor 10 is connected with the upper end of the stirring shaft 14, the stirring shaft 14 and the stirring blade 15 are driven by the motor 10 to rotate to stir, the refining efficiency is improved, the material is conveniently discharged from the bottom, and the supporting legs 18 are fixedly mounted at the bottom of the first box body 1.
Example 2
This embodiment is further optimized on embodiment 1's basis, as shown in fig. 4, fixed mounting has into oil pipe 23 in the sealing plug, conveniently carries out automatic oiling through the oil pump through setting up into oil pipe 23, and is more laborsaving convenient.
Further, still fixed mounting has a clarifier 24 in the first box 1 outside, clarifier 24 links to each other with aspiration pump 12, handles the volatile gas of taking out through setting up clarifier 24, avoids polluted environment or influence workman's health, and environmental protection safety more, simultaneously for the convenience carry out automation mechanized operation, still fixed mounting has a control box 25 in the first box 1 outside, control box 25 respectively with clarifier 24, valve 19, aspiration pump 12 and motor 10 electric connection, electric cabinet 25 just have the current can realize automatic control, its structure and connected mode are known for technical personnel in the field, no longer give unnecessary details.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a rapeseed oil refining device of high-efficient miscellaneous, includes first box (1), first box (1) inner wall fixed mounting has heating pipe (13), install rabbling mechanism, its characterized in that in first box (1): the stirring mechanism is characterized in that a second filter screen (16) is installed at the bottom of the stirring mechanism, the upper end of the first box body (1) is connected with an air pump (12) through an air pipe (11), the air pump (12) is fixedly installed on the outer side of the first box body (1), a second box body (2) is fixedly installed on the outer side of the first box body (1), a filter chamber (7) is formed in the second box body (2), a feed inlet (3) is formed in the upper end of the box body (1), a sealing plug is installed in the feed inlet (3), a partition plate (5) is fixedly installed in the filter chamber (7), a through hole is formed in the partition plate (5), a first filter screen (4) is fixedly installed at the upper end of the partition plate (5), an inlet (8) and an outlet (9) are formed in the bottom of the second box body (2), an oil inlet (6) and a slag outlet (20) which are communicated with, an oil outlet (17) is installed at the bottom of the box body (1), and valves (19) are installed in the oil outlet (17), the slag outlet (20), the outlet (9), the inlet (8), the oil inlet (6) and the through hole.
2. A rapeseed oil refining device capable of efficiently removing impurities according to claim 1, comprising: the valve (19) is an electromagnetic valve.
3. A rapeseed oil refining device with high efficiency impurity removal according to claim 1 or 2, characterized in that: the first filter screen (4) comprises a first shrinkage net (21) and a second shrinkage net (22) fixedly connected with the first shrinkage net, and the bottom of the second shrinkage net (22) is matched with the through holes.
4. A rapeseed oil refining device capable of efficiently removing impurities according to claim 3, comprising: stirring mechanism includes (mixing) shaft (14), the outside cover of (mixing) shaft (14) is equipped with rather than fixed connection's stirring leaf (15), (mixing) shaft (14) upper end runs through first box (1) and rotates rather than being connected, box (1) upper end fixed mounting has motor (10), the output and (mixing) shaft (14) upper end of motor (10) link to each other.
5. A rapeseed oil refining device capable of efficiently removing impurities according to claim 3, comprising: the bottom of the first box body (1) is fixedly provided with supporting legs (18).
6. A rapeseed oil refining device capable of efficiently removing impurities according to claim 3, comprising: an oil inlet pipe (23) is fixedly arranged in the sealing plug.
7. A rapeseed oil refining device capable of efficiently removing impurities according to claim 3, comprising: and a purifier (24) is fixedly mounted on the outer side of the first box body (1), and the purifier (24) is connected with the air suction pump (12).
8. A rapeseed oil refining device capable of efficiently removing impurities according to claim 7, comprising: the outer side of the first box body (1) is fixedly provided with a control box (25), and the control box (25) is electrically connected with the purifier (24), the valve (19), the air pump (12) and the motor (10) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911073517.2A CN110791380A (en) | 2019-11-06 | 2019-11-06 | Rapeseed oil refining device capable of efficiently removing impurities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911073517.2A CN110791380A (en) | 2019-11-06 | 2019-11-06 | Rapeseed oil refining device capable of efficiently removing impurities |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110791380A true CN110791380A (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911073517.2A Withdrawn CN110791380A (en) | 2019-11-06 | 2019-11-06 | Rapeseed oil refining device capable of efficiently removing impurities |
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| CN (1) | CN110791380A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112274995A (en) * | 2020-12-03 | 2021-01-29 | 孙萧珊 | Novel negative pressure dewatering mechanism for filter press and using method thereof |
-
2019
- 2019-11-06 CN CN201911073517.2A patent/CN110791380A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112274995A (en) * | 2020-12-03 | 2021-01-29 | 孙萧珊 | Novel negative pressure dewatering mechanism for filter press and using method thereof |
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Application publication date: 20200214 |
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