CN113180107A - Rapid sterilization device for dairy product processing and implementation method - Google Patents
Rapid sterilization device for dairy product processing and implementation method Download PDFInfo
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- CN113180107A CN113180107A CN202110473690.2A CN202110473690A CN113180107A CN 113180107 A CN113180107 A CN 113180107A CN 202110473690 A CN202110473690 A CN 202110473690A CN 113180107 A CN113180107 A CN 113180107A
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- liquid
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- heat exchange
- pipeline
- milk
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- 230000001954 sterilising effect Effects 0.000 title claims abstract description 45
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 45
- 235000013365 dairy product Nutrition 0.000 title claims abstract description 24
- 238000012545 processing Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 21
- 239000007788 liquid Substances 0.000 claims abstract description 93
- 238000009928 pasteurization Methods 0.000 claims abstract description 22
- 235000013336 milk Nutrition 0.000 claims description 43
- 239000008267 milk Substances 0.000 claims description 43
- 210000004080 milk Anatomy 0.000 claims description 43
- 238000010438 heat treatment Methods 0.000 claims description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 26
- 229910052802 copper Inorganic materials 0.000 claims description 26
- 239000010949 copper Substances 0.000 claims description 26
- 238000003756 stirring Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 235000020191 long-life milk Nutrition 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 241000894006 Bacteria Species 0.000 description 8
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 4
- 235000015097 nutrients Nutrition 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 244000052616 bacterial pathogen Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 235000014655 lactic acid Nutrition 0.000 description 2
- 239000004310 lactic acid Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 235000020247 cow milk Nutrition 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 235000020251 goat milk Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
- A23C3/00—Preservation of milk or milk preparations
- A23C3/02—Preservation of milk or milk preparations by heating
- A23C3/03—Preservation of milk or milk preparations by heating the materials being loose unpacked
- A23C3/033—Preservation of milk or milk preparations by heating the materials being loose unpacked and progressively transported through the apparatus
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
- A23C3/00—Preservation of milk or milk preparations
- A23C3/02—Preservation of milk or milk preparations by heating
- A23C3/03—Preservation of milk or milk preparations by heating the materials being loose unpacked
- A23C3/033—Preservation of milk or milk preparations by heating the materials being loose unpacked and progressively transported through the apparatus
- A23C3/0337—Preservation of milk or milk preparations by heating the materials being loose unpacked and progressively transported through the apparatus the milk flowing through with indirect heat exchange, containing rotating elements, e.g. for improving the heat exchange
Abstract
The invention discloses a rapid sterilization device for processing dairy products, which belongs to the technical field of dairy product processing, and comprises a heat exchange liquid tank, a liquid heater, a first liquid pump, a pasteurization tank, a high-temperature sterilizer, a second liquid pump and a low-temperature storage tank.
Description
Technical Field
The invention relates to the technical field of dairy product processing, in particular to a rapid sterilization device for dairy product processing and an implementation method.
Background
The dairy product is also called cream product, which is a product prepared by using cow milk or goat milk and processed products thereof as main raw materials, adding or not adding a proper amount of vitamins, minerals and other auxiliary materials, and using conditions required by laws, regulations and standards to process the dairy product, wherein the processed raw materials of the dairy product are fresh milk of various animals, and after some fresh milk is extruded, the fresh milk often contains a large amount of bacteria, so that the bacteria cannot be preserved for a long time, and the fresh milk needs to be sterilized at high temperature to kill the wanted bacteria in the fresh milk, so that the fresh milk can be processed into the dairy product for a long time. The existing milk sterilization mainly adopts pasteurization and ultra-high temperature sterilization.
High-temperature sterilized milk (also called normal-temperature milk) is prepared by subjecting milk to instantaneous sterilization treatment of ultrahigh-temperature instantaneous sterilization (135-150 ℃ for 4-15 seconds) to completely destroy microorganisms and spores capable of growing in the milk. There are two main types of pasteurization: the first is to heat the milk to 62-65 deg.C, keep for 30min, adopt this method, can kill various growth-type pathogenic bacteria in the milk, the sterilization efficiency can reach 97.3% -99.9%, only some thermophilic bacteria and heat-resisting bacterium and spore, etc. that remain after disinfecting, but these bacterium are lactic acid bacteria mostly, lactic acid bacteria are not only harmless to the human body but beneficial to health; the second method heats the milk to 75-90 ℃, keeps the temperature for 15-16 s, and has shorter sterilization time and higher working efficiency. However, the basic principle of sterilization is that pathogenic bacteria can be killed, and the temperature is too high, so that more nutrition is lost.
Although the milk can be quickly sterilized by the ultra-high temperature sterilization method, the damage to nutrient elements in the milk is large, the nutrient elements in the milk can be well preserved by the pasteurization method, but the sterilization time is long, the sterilization is not thorough, the later storage pressure is large, both the sterilization time and the sterilization pressure have advantages and disadvantages, and how to design the milk sterilization device and the sterilization method which have the advantages of short sterilization time, small damage to the nutrient elements and thorough sterilization is a difficult problem in the milk manufacturing industry at present.
Therefore, the invention designs a rapid sterilization device for processing dairy products and an implementation method thereof, so as to solve the problems.
Disclosure of Invention
The invention aims to provide a quick sterilization device for processing dairy products and an implementation method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a fast sterilization device for processing dairy products comprises a heat exchange liquid tank, a liquid heater, a first liquid pump, a pasteurization tank, a high-temperature sterilizer, a second liquid pump and a low-temperature storage tank;
the liquid outlet of the heat exchange liquid tank is connected with the liquid inlet of the liquid heater, the liquid outlet of the liquid heater is connected with the liquid inlet of a first liquid pump, the liquid outlet of the first liquid pump is connected with the liquid inlet of a heat exchange pipeline in the pasteurization tank through a first multi-pipe-port connector, the heat exchange pipeline is divided into a plurality of groups which are arranged at intervals from top to bottom, the liquid outlet of the heat exchange pipeline is connected with a circulating pipe through a second multi-pipe-port connector, and the circulating pipe is connected with the liquid inlet of the heat exchange;
the bottom end of the pasteurization tank is provided with a first pipeline which is connected with a liquid inlet of a high-temperature sterilizer;
the high-temperature sterilizer is divided into two groups which are connected left and right, each group of high-temperature sterilizer comprises two shower nozzles, a plurality of heat exchange copper pipes and a copper pipe heater, two groups of concentric rings with different diameters and consisting of a plurality of water holes are distributed on the shower nozzles, the heat exchange copper pipes are connected with the water holes between the two shower nozzles, the two ends of each heat exchange copper pipe are respectively butted with the water holes on the two sides, and all the heat exchange copper pipes penetrate through the heating zone of the copper pipe heater;
the liquid outlet of the high-temperature sterilizer is connected with the liquid inlet of a second liquid pump through a second pipeline, and the liquid outlet of the second liquid pump is connected with the liquid inlet of the low-temperature storage tank.
Preferably, pasteurization jar top middle part is equipped with agitator motor, agitator motor's output shaft runs through pasteurization jar top wall bottom and is connected with the puddler, the puddler includes the body of rod and the multiunit stirring leaf of establishing on it at the equidistant, and every heat transfer pipeline upper portion of group all sets a set of stirring leaf.
Preferably, the cross section of the stirring blade is prismatic.
Preferably, the heat exchange pipeline comprises a round pipe, a plurality of groups of habits are transversely distributed on the inner side of the round pipe, and the left side and the right side of the round pipe are symmetrically provided with connecting pipe orifices.
Preferably, a first temperature sensor is arranged on a connecting pipe between the liquid heater and the first liquid pump, a second temperature sensor is arranged on the first pipeline, a third temperature sensor is arranged on a connecting pipe between the two groups of high-temperature sterilizers, and a fourth temperature sensor is arranged on the second pipeline.
Preferably, a circular heating hole is formed in the copper pipe heater, first heating rods are uniformly distributed on the inner hole surface of the circular heating hole, a cylinder is arranged at the center of the circular heating hole through a support, and second heating rods are distributed on the cylinder.
Preferably, an electromagnetic valve is arranged on the first pipeline.
An implementation method of rapid sterilization for dairy product processing comprises the following steps:
s1, placing the fresh extruded milk in a sealed tank body, heating the milk in the sealed tank body to 50-57 ℃, and keeping the temperature for 10-18 min;
s2, after the preliminary heating is finished, the milk with the increased temperature is subjected to temperature rise treatment twice through a pump until the temperature of the milk is 125-135 ℃, and is kept for 4-7S;
and S3, putting the sterilized milk into a refrigeration tank, and quickly cooling and storing the milk at a storage temperature of not more than 15 ℃.
Compared with the prior art, the invention has the beneficial effects that: the invention combines the pasteurization method and the ultra-high temperature sterilization method to form a new milk sterilization method, compared with the traditional pasteurization method and the traditional ultra-high temperature sterilization method, the heating time is shortened, the sterilization temperature is reduced, the pasteurization method and the ultra-high temperature sterilization method are matched for use, the sterilization sufficiency is ensured, and the scheme has the advantages that the sterilization highest temperature is reduced, the sterilization time at the highest temperature is shortened, and the damage to nutrient elements in the milk is less.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a sterilization apparatus according to the present invention;
FIG. 2 is a schematic view of a heat exchange tube configuration according to the present invention;
FIG. 3 is a schematic view of the stirring rod structure of the present invention;
FIG. 4 is a schematic cross-sectional view of a stirring vane a-a according to the present invention;
FIG. 5 is a schematic view of the structure of the shower head and the heat exchange copper pipe of the present invention;
FIG. 6 is a schematic view of the copper tube heater according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a fast sterilization device for processing dairy products comprises a heat exchange liquid tank 1, a liquid heater 2, a first liquid pump 3, a pasteurization tank 5, a high-temperature sterilizer, a second liquid pump 19 and a low-temperature storage tank 21;
a liquid outlet of the heat exchange liquid tank 1 is connected with a liquid inlet of the liquid heater 2, a liquid outlet of the liquid heater 2 is connected with a liquid inlet of the first liquid pump 3, a liquid outlet of the first liquid pump 3 is connected with a liquid inlet of a heat exchange pipeline 6 in the pasteurization tank 5 through a first multi-port connector 7, the heat exchange pipeline 6 is divided into a plurality of groups which are arranged at intervals up and down, a liquid outlet of the heat exchange pipeline 6 is connected with a circulating pipe 9 through a second multi-port connector 8, and the circulating pipe 9 is connected with a liquid inlet of the heat exchange liquid tank 1;
a first pipeline 12 is arranged at the bottom end of the pasteurization tank 5, the first pipeline 12 is connected with a liquid inlet of the high-temperature sterilizer, and an electromagnetic valve is arranged on the first pipeline 12;
the high-temperature sterilizer is divided into two groups which are connected left and right, each group of high-temperature sterilizer comprises two shower heads 14, a plurality of heat exchange copper pipes 15 and a copper pipe heater 16, two groups of concentric rings with different diameters and consisting of a plurality of water holes are distributed on the shower heads 14, the heat exchange copper pipes 15 are connected with the water holes between the two shower heads 14, the two ends of each heat exchange copper pipe 15 are respectively butted with the water holes on the two sides, and all the heat exchange copper pipes 15 penetrate through the heating area of the copper pipe heater 16;
the liquid outlet of the high-temperature sterilizer is connected with the liquid inlet of a second liquid pump 19 through a second pipeline 18, and the liquid outlet of the second liquid pump 19 is connected with the liquid inlet of a low-temperature storage tank 21.
Further, 5 top middle parts of pasteurization jar are equipped with agitator motor 10, and agitator motor 10's output shaft runs through 5 roof bottom ends of pasteurization jar and is connected with puddler 11, and puddler 11 includes the body of rod 111 and the multiunit stirring leaf 112 of establishing above that with the equal interval, and every 6 upper portions of heat transfer pipeline of group all set a set of stirring leaf 112.
Further, the cross section of the stirring blade 112 is prismatic.
Further, the heat exchange pipe 6 comprises a circular pipe 61, a plurality of groups of habits 62 are transversely distributed on the inner side of the circular pipe 61, and connecting pipe openings 63 are symmetrically arranged on the left side and the right side of the circular pipe 61.
Further, a first temperature sensor 4 is arranged on a connecting pipe between the liquid heater 2 and the first liquid pump 3, a second temperature sensor 13 is arranged on the first pipeline 12, a third temperature sensor 17 is arranged on a connecting pipe between the two groups of high-temperature sterilizers, and a fourth temperature sensor 20 is arranged on the second pipeline 18.
Further, a circular heating hole 161 is formed in the copper pipe heater 16, first heating rods 162 are uniformly distributed on the inner hole surface of the circular heating hole 161, a cylinder 163 is arranged at the center of the circular heating hole 161 through a support, and second heating rods 164 are distributed on the cylinder 163.
In the scheme, the length of the secondary high-temperature sterilizer is large, namely the length of the copper pipe heater 16 is long, and the working strength of the liquid pump is controlled, so that the moving time of milk in the secondary high-temperature sterilizer can meet the heating requirement.
An implementation method of rapid sterilization for dairy product processing comprises the following steps:
s1, placing the fresh extruded milk in a sealed tank body, heating the milk in the sealed tank body to 50-57 ℃, and keeping the temperature for 10-18 min;
s2, after the preliminary heating is finished, the milk with the increased temperature is subjected to temperature rise treatment twice through a pump until the temperature of the milk is 125-135 ℃, and is kept for 4-7S;
and S3, putting the sterilized milk into a refrigeration tank, and quickly cooling and storing the milk at a storage temperature of not more than 15 ℃.
The working principle is as follows: adding milk to be processed into a sterilization tank 5, heating heat exchange liquid in a heat exchange liquid tank 1 through a liquid heater 2, enabling the heat exchange liquid to enter a heat exchange pipeline 6 through a first liquid pump 3, realizing the heating of the milk through the contact heat exchange between the heat exchange pipeline 6 and the milk, heating the milk to 53 ℃, and keeping the temperature for 15 min;
then the electromagnetic valve on the first pipeline 12 is opened, the second liquid pump 19 is started, so that the milk enters the high-temperature sterilizer, the milk is heated to 130 ℃ through the two-stage heating of the two groups of high-temperature sterilizer, and the working strength of the second liquid pump 19 is controlled because the length of the second copper pipe heater 16 is longer, so that the moving time of the milk in the second liquid pump is about 5 seconds;
the double sterilized milk enters a low-temperature storage tank 21 for storage, and the temperature in the low-temperature storage tank 21 is 13 ℃.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. A fast sterilization device for dairy product processing is characterized by comprising a heat exchange liquid tank (1), a liquid heater (2), a first liquid pump (3), a pasteurization tank (5), a high-temperature sterilizer, a second liquid pump (19) and a low-temperature storage tank (21);
the liquid outlet of the heat exchange liquid tank (1) is connected with the liquid inlet of the liquid heater (2), the liquid outlet of the liquid heater (2) is connected with the liquid inlet of the first liquid pump (3), the liquid outlet of the first liquid pump (3) is connected with the liquid inlet of a heat exchange pipeline (6) in the pasteurization tank (5) through a first multi-pipe-port connector (7), the heat exchange pipeline (6) is divided into a plurality of groups which are arranged at intervals up and down, the liquid outlet of the heat exchange pipeline (6) is connected with a circulating pipe (9) through a second multi-pipe-port connector (8), and the circulating pipe (9) is connected with the liquid inlet of the heat exchange liquid tank (1);
a first pipeline (12) is arranged at the bottom end of the pasteurization tank (5), and the first pipeline (12) is connected with a liquid inlet of a high-temperature sterilizer;
the high-temperature sterilizer is divided into two groups which are connected left and right, each group of high-temperature sterilizer comprises two shower heads (14), a plurality of heat exchange copper pipes (15) and a copper pipe heater (16), two groups of concentric rings with different diameters and consisting of a plurality of water holes are distributed on the shower heads (14), the heat exchange copper pipes (15) are connected between the two shower heads (14), the two ends of each heat exchange copper pipe (15) are respectively butted with the water holes on the two sides, and all the heat exchange copper pipes (15) penetrate through the heating area of the copper pipe heater (16);
the liquid outlet of the high-temperature sterilizer is connected with the liquid inlet of a second liquid pump (19) through a second pipeline (18), and the liquid outlet of the second liquid pump (19) is connected with the liquid inlet of a low-temperature storage tank (21).
2. The fast sterilization device for processing the dairy products according to claim 1, wherein: pasteurization jar (5) top middle part is equipped with agitator motor (10), the output shaft of agitator motor (10) runs through pasteurization jar (5) roof bottom and is connected with puddler (11), puddler (11) are including the body of rod (111) and equidistant multiunit stirring leaf (112) of establishing on it, and every group heat transfer pipeline (6) upper portion all sets a set of stirring leaf (112).
3. The fast sterilization device for processing the dairy products according to claim 2, wherein: the cross section of the stirring blade (112) is prismatic.
4. The fast sterilization device for processing the dairy products according to claim 2, wherein: the heat exchange pipeline (6) comprises a round pipe (61), a plurality of groups of habits (62) are transversely distributed on the inner side of the round pipe (61), and connecting pipe openings (63) are symmetrically arranged on the left side and the right side of the round pipe (61).
5. The fast sterilization device for processing the dairy products according to claim 1, wherein: be equipped with first temperature sensor (4) on the connecting pipe of liquid heater (2) and first liquid pump (3), be equipped with second temperature sensor (13) on first pipeline (12), be equipped with third temperature sensor (17) on the connecting pipe between two sets of high temperature sterilization wares, be equipped with fourth temperature sensor (20) on second pipeline (18).
6. The fast sterilization device for processing the dairy products according to claim 1, wherein: the copper pipe heater is characterized in that a circular heating hole (161) is formed in the copper pipe heater (16), first heating rods (162) are uniformly distributed on the inner hole surface of the circular heating hole (161), a cylinder (163) is arranged at the center of the circular heating hole (161) through a support, and second heating rods (164) are distributed on the cylinder (163).
7. The fast sterilization device for processing the dairy products according to claim 1, wherein: an electromagnetic valve is arranged on the first pipeline (12).
8. An implementation method of rapid sterilization for processing dairy products is characterized by comprising the following steps:
s1, placing the fresh extruded milk in a sealed tank body, heating the milk in the sealed tank body to 50-57 ℃, and keeping the temperature for 10-18 min;
s2, after the preliminary heating is finished, the milk with the increased temperature is subjected to temperature rise treatment twice through a pump until the temperature of the milk is 125-135 ℃, and is kept for 4-7S;
and S3, putting the sterilized milk into a refrigeration tank, and quickly cooling and storing the milk at a storage temperature of not more than 15 ℃.
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| CN202110473690.2A CN113180107A (en) | 2021-04-29 | 2021-04-29 | Rapid sterilization device for dairy product processing and implementation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110473690.2A CN113180107A (en) | 2021-04-29 | 2021-04-29 | Rapid sterilization device for dairy product processing and implementation method |
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|---|---|---|---|---|
| CN1101500A (en) * | 1994-08-22 | 1995-04-19 | 花俊国 | Combined super high temperature sterilizing technology |
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| CN201429339Y (en) * | 2009-03-04 | 2010-03-24 | 程永新 | Tube bundle heat exchanger of juice concentration condensing tower |
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| CN109984196A (en) * | 2019-04-26 | 2019-07-09 | 安徽曦强乳业集团有限公司 | A kind of long shelf-life high nutritional type milk and its production method |
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-
2021
- 2021-04-29 CN CN202110473690.2A patent/CN113180107A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1101500A (en) * | 1994-08-22 | 1995-04-19 | 花俊国 | Combined super high temperature sterilizing technology |
| CN2658693Y (en) * | 2003-11-21 | 2004-11-24 | 韶关市环保实业有限公司 | Blast furnace gas temp. lowering device |
| CN201429339Y (en) * | 2009-03-04 | 2010-03-24 | 程永新 | Tube bundle heat exchanger of juice concentration condensing tower |
| CN107307261A (en) * | 2017-08-11 | 2017-11-03 | 北京国精机电科学技术研究院 | A kind of intelligent multipurpose liquid sterilising machine |
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| CN210184427U (en) * | 2019-05-30 | 2020-03-27 | 惠州市永滋油脂有限公司 | Sterilization machine |
Non-Patent Citations (1)
| Title |
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| 刘协舫，等: "《食品机械》", 31 March 2002, 湖北科学技术出版社 * |
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Application publication date: 20210730 |