CN113388463B - Automatic dry yeast adding system - Google Patents
Automatic dry yeast adding system Download PDFInfo
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- CN113388463B CN113388463B CN202110665555.8A CN202110665555A CN113388463B CN 113388463 B CN113388463 B CN 113388463B CN 202110665555 A CN202110665555 A CN 202110665555A CN 113388463 B CN113388463 B CN 113388463B
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- valve
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- storage tank
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12C—BEER; PREPARATION OF BEER BY FERMENTATION; PREPARATION OF MALT FOR MAKING BEER; PREPARATION OF HOPS FOR MAKING BEER
- C12C11/00—Fermentation processes for beer
- C12C11/02—Pitching yeast
Abstract
The invention relates to the technical field of dry yeast preparation, in particular to an automatic dry yeast adding system, wherein a yeast storage tank continuous liquid level sensor, a sampling valve and a yeast storage tank empty liquid level probe are respectively and fixedly installed at the lower end of a yeast storage tank, a yeast storage tank outlet three-way valve and a fourth CIP pipeline isolation pneumatic valve are installed at the joint of the yeast storage tank empty liquid level probe and a CIP main pipe, the sampling valve is connected with a CIP sampling valve branch manual valve, and an adding structure is further installed on the yeast storage tank outlet three-way valve; and the other end of the three-way valve is provided with a filtering structure. The invention effectively solves the problems of easy microbial pollution, insufficient yeast activity and uneven/untimely addition in the use process of the dry yeast, and ensures the smooth fermentation of the dry yeast.
Description
Technical Field
The invention relates to the technical field of dry yeast preparation, in particular to an automatic dry yeast adding system.
Background
In the normal production of beer, a single variety of yeast produced from the brewing process of a home-made factory is used, and the yeast is viscous, milky white, i.e., "wet yeast", which is difficult to store and transport and therefore can generally only be used on site.
The beer yeast is the soul of beer production, and the yeast of different varieties and qualities can brew beer with different flavors, so as to enrich the variety of beer production and meet the market demand for special beer, and it is necessary to use different varieties of yeast, therefore, there are foreign suppliers to process different varieties of yeast into dry yeast with maintained activity, and after long-distance transportation and long-term storage, the dry yeast is applied to beer brewing.
At present, the application of dry yeast in the large-scale production of beer is still in the starting stage, a dry yeast adding device used in a particular factory is very simple and crude, a special automatic adding system is not provided, the microbial pollution of the beer and the activity of the yeast cannot be guaranteed, and the popularization and the application of the dry yeast are influenced.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an automatic dry yeast adding system.
In order to achieve the purpose, the invention adopts the following technical scheme:
the design is an automatic dry yeast adding system which comprises a compressed air pipe, an aseptic membrane filter, a yeast storage tank and a CIP main pipe, wherein the compressed air pipe is connected with the compressed air aseptic membrane filter, the compressed air aseptic membrane filter is connected with a tank top device, the CIP main pipe is sequentially provided with a first CIP pipeline separating pneumatic valve, a second CIP pipeline separating pneumatic valve and a third CIP pipeline separating pneumatic valve, the tank top device and the yeast storage tank are connected with each other, the upper end of the yeast storage tank is respectively provided with a yeast storage tank pressure sensor, a dry yeast adding port and a yeast storage tank stirring, the yeast storage tank is further provided with a yeast storage tank CIP washing ball on the yeast storage tank stirring, a CIP dry yeast adding port branch pneumatic valve is arranged between the dry yeast adding port and the CIP main pipe, the lower end of the yeast storage tank is respectively and fixedly provided with a yeast storage tank continuous liquid level sensor, a sampling valve and a yeast storage tank empty liquid level probe, a yeast storage tank outlet three-way valve and a fourth CIP pipeline isolating pneumatic valve are arranged at the joint of the yeast storage tank air-liquid level probe and the CIP main pipe, the sampling valve is connected with a CIP sampling valve branch manual valve, and an adding structure is further arranged on the yeast storage tank outlet three-way valve;
and a three-way valve is arranged on the CIP main pipe between the fourth CIP pipeline isolating pneumatic valve and the second CIP pipeline isolating pneumatic valve, and a filtering structure is arranged at the other end of the three-way valve.
Preferably, the tank top device includes that the empty pipeline three-way valve of backpressure pressure, the empty pipeline governing valve of backpressure pressure, jar body pressure relief governing valve, wash pressure relief governing valve pipeline pneumatic valve, wash the empty pipeline pneumatic valve of backpressure pressure and jar body vacuum valve, the empty pipeline three-way valve of backpressure pressure with the pressure air pipe is connected, wash pressure relief governing valve pipeline pneumatic valve-with the inside intercommunication each other of yeast storage tank, the empty pipeline governing valve of backpressure pressure, jar body pressure relief governing valve, wash the empty pipeline pneumatic valve of backpressure pressure and jar body vacuum valve constitute the circulation circuit with the empty pipeline three-way valve of backpressure pressure relief governing valve and wash pressure relief governing valve pipeline pneumatic valve.
Preferably, the adding structure comprises a yeast adding pipeline Q-shaped valve, a yeast adding rotor pump and a yeast adding pipeline, the yeast adding pipeline Q-shaped valve is connected with a three-way valve at the outlet of the yeast storage tank, and the yeast adding rotor pump is connected between the yeast adding pipeline Q-shaped valve and the yeast adding pipeline.
Preferably, the filtering structure comprises an outlet pneumatic valve of the sterile water film filter, the sterile water film filter and an inlet pneumatic valve of the sterile water film filter, the sterile water film filter is connected with the three-way valve through the outlet pneumatic valve of the sterile water film filter, and the inlet pneumatic valve of the sterile water film filter is arranged on the sterile water film filter.
Preferably, the inlet pneumatic valve of the sterile water film filter is connected with a temperature sensor, and the temperature sensor is connected with a temperature regulating valve.
Preferably, the temperature regulating valve is respectively communicated with the brewing water pipeline, the ice water pipeline and the hot water pipeline through three pipelines.
Preferably, the effective volume of the yeast tank is 100 HL.
The automatic dry yeast adding system provided by the invention has the beneficial effects that: the automatic dry yeast adding system effectively solves the problems of easy microbial pollution, insufficient yeast activity and uneven/untimely adding in the using process of dry yeast, ensures the smooth fermentation of the dry yeast and fully ensures the beer quality, and comprises a DN300 dry yeast adding port, a yeast storage tank, a storage tank top device, an aseptic air backpressure subsystem, a tank pipeline valve pump CIP cleaning subsystem, an aseptic water preparation device and an automatic activated yeast adding device, and is matched with a temperature, pressure and continuous liquid level sensor and an empty material level switch, wherein the yeast storage tank firstly carries out proper backpressure on aseptic air, then carries out CIP cleaning according to the process requirements, and also carries out CIP cleaning on an aseptic water inlet pipe of the yeast storage tank, after the cleaning is finished, brewing water/ice water/hot water are controlled to proper temperature through a regulating valve and enter the yeast storage tank after passing through an aseptic membrane filter, starting a stirring device, opening a dry yeast feeding port under the condition of micro positive pressure, feeding dry yeast according to a defined quantity, after the dry yeast feeding is finished, carrying out 75% alcohol cotton disinfection on the feeding port and a cover, covering the cover, uniformly stirring the yeast in a storage tank, adding activated yeast into the wheat cold juice on line through a rotor pump, mixing and then conveying to the storage tank.
Drawings
FIG. 1 is a structural system diagram of an automatic dry yeast adding system provided by the invention.
FIG. 2 is a structural system diagram of a tank top device of the automatic dry yeast adding system in FIG. 1.
In the figure: a compressed air pipe 1, a CIP header pipe 2, a compressed air sterile membrane filter 3, a first CIP pipeline cut-off pneumatic valve 4, a tank top device 5, a backpressure compressed air pipeline three-way valve 5-1, a backpressure compressed air pipeline regulating valve 5-2, a tank body pressure relief regulating valve 5-3, a cleaning relief regulating valve pipeline pneumatic valve 5-4, a cleaning backpressure compressed air pipeline pneumatic valve 5-5, a tank body vacuum valve 5-6, a dry yeast adding port 6, a CIP dry yeast adding port branch pneumatic valve 7, a yeast storage tank pressure sensor 8, a yeast storage tank 9, a CIP sampling valve branch manual valve 10, a yeast storage tank continuous liquid level sensor 11, a sampling valve 12, a yeast adding rotor pump 13, a yeast adding pipeline Q-shaped valve 14, a yeast adding pipeline 15, a fourth CIP pipeline cut-off pneumatic valve 16, a yeast adding three-way valve 17, a second CIP pipeline cut-off pneumatic valve 18, a sterile water membrane filter outlet pneumatic valve 19, An aseptic membrane filter 20, an aseptic membrane filter inlet pneumatic valve 21, a temperature sensor 22, a temperature regulating valve 23, a yeast storage tank CIP ball washing 24, a yeast storage tank stirring 25, a yeast storage tank outlet three-way valve 26, a yeast storage tank air liquid level probe 27 and a third CIP pipeline isolation pneumatic valve 28.
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.
Example 1
Referring to fig. 1, the automatic dry yeast feeding system comprises an air compression pipe 1, an aseptic membrane filter 20, a yeast storage tank 9 and a CIP main pipe 2, wherein the air compression pipe 1 is connected with the air compression aseptic membrane filter 3, the CIP main pipe 2, a CIP pipeline isolation pneumatic valve 28 and a yeast storage tank CIP washing ball 24 are used for cleaning the yeast storage tank 9 according to a set process, a CIP branch pneumatic valve 7 and a CIP branch manual valve 10 are opened in a clearance mode in the tank body cleaning process, a dry yeast feeding port and a sampling valve are cleaned, and dead corners are thoroughly eliminated.
Install first CIP pipeline on the CIP house steward 2 in proper order and cut off pneumatic valve 4, second CIP pipeline cuts off pneumatic valve 18 and third CIP pipeline and cuts off pneumatic valve 28, interconnect between tank top device 5 and the yeast storage tank 9, yeast storage tank pressure sensor 8 is installed respectively to yeast storage tank 9 upper end, dry yeast is thrown and is thrown oral cavity 6 and yeast storage tank stirring 25, through CIP house steward 2, first CIP pipeline cuts off pneumatic valve 4, fourth CIP pipeline cuts off pneumatic valve 16, second CIP pipeline cuts off pneumatic valve 18, three-way valve 17, yeast storage tank export three-way valve 26, rotor pump 13, Q type valve 14, yeast adds pipeline 15 and washs sterile water inlet pipe, and yeast adds the pipeline.
A yeast storage tank CIP ball washer 24 is further installed on the yeast storage tank stirring 25, a CIP dry yeast adding port branch pneumatic valve 7 is installed between the dry yeast adding port 6 and the CIP header pipe 2, a yeast storage tank continuous liquid level sensor 11, a sampling valve 12 and a yeast storage tank empty liquid level probe 27 are respectively and fixedly installed at the lower end of the yeast storage tank 9, the effective volume of the yeast storage tank 9 is 100HL, a yeast storage tank outlet three-way valve 26 and a fourth CIP pipeline isolating pneumatic valve 16 are installed at the connection position of the yeast storage tank empty liquid level probe 27 and the CIP header pipe 2, the sampling valve 12 is connected with a CIP sampling valve branch manual valve 10, and an adding structure is further installed on the yeast storage tank outlet three-way valve 26; the yeast activating device comprises a yeast adding pipeline Q-shaped valve 14, a yeast adding rotor pump 13 and a yeast adding pipeline 15, wherein the yeast adding pipeline Q-shaped valve 14 is connected with a yeast storage tank outlet three-way valve 26, the yeast adding rotor pump 13 is connected between the yeast adding pipeline Q-shaped valve 14 and the yeast adding pipeline 15, after the dry yeast adding is finished, a pressure air pipe 1, a pressure air sterile membrane filter 3 and a tank top device 5 are used for opening a 5-1 back pressure air pipeline three-way valve to be matched with cleaning and sewage draining, a 5-2 back pressure air pipeline adjusting valve is used for carrying out pressure air back pressure on a yeast storage tank 9, the micro positive pressure is kept at 0.005MPa, the stirring is started for 25 minutes to 10-30 minutes after the static state is carried out for 10-30 minutes, the yeast activating is finished, the characteristics of the yeast can be sampled and analyzed through a sampling valve 12 at the moment, the yeast storage tank outlet three-way valve 26 is opened, the CIP pipeline is closed to cut off a pneumatic valve 16, A Q-valve 14 of a yeast adding pipeline is used for starting a yeast adding rotor pump 13, and activated yeast is added into the wheat cold juice on line through a yeast adding pipe 15 and is sent to a fermentation tank after being mixed.
In the automatic yeast adding process, the 5-1 backpressure air-pressure pipeline three-way valve is opened through the tank top device 5, cleaning and pollution discharge are carried out in a matched mode, the 5-2 backpressure air-pressure pipeline adjusting valve is used for carrying out pressure air backpressure on the yeast storage tank 9, and the micro positive pressure is kept at 0.005 Mpa.
A three-way valve 17 is arranged on the CIP main pipe 2 between the fourth CIP pipeline cut-off pneumatic valve 16 and the second CIP pipeline cut-off pneumatic valve 18, a filtering structure is arranged at the other end of the three-way valve 17 and comprises an aseptic water film filter outlet pneumatic valve 19, an aseptic water film filter 20 and an aseptic water film filter inlet pneumatic valve 21, the aseptic water film filter 20 is connected with the three-way valve 17 through the aseptic water film filter outlet pneumatic valve 19, the aseptic water film filter inlet pneumatic valve 21 is arranged on the aseptic water film filter 20, the aseptic water film filter inlet pneumatic valve 21 is connected with a temperature sensor 22, the temperature sensor 22 is connected with a temperature regulating valve 23, the temperature regulating valve 23 is respectively communicated with a brewing water pipeline, an ice water pipeline and a hot water pipeline through three pipelines, the brewing water/ice water/hot water passes through the temperature sensor 22 and the regulating valve 23, controlling the temperature of the mixed water to 15-25 ℃, opening a path valve: an inlet pneumatic valve 21 of the sterile water film filter, an outlet pneumatic valve 19 of the sterile water film filter, a three-way valve 17, a CIP pipeline cut-off pneumatic valve 16 and an outlet three-way valve 26 of the yeast storage tank; closing the path valve: the CIP line shuts off the pneumatic valve 18.
The mixed water enters the yeast storage tank 9 through the sterile membrane filter 20, the quantity of the sterile water is detected through the continuous liquid level sensor 11 of the yeast storage tank, and the calculation basis of the quantity of the sterile water is as follows: the adding amount of the dry yeast is 50-80g/hl, 20 times of sterile water is adopted for dilution in the sterile water inlet process, a 5-3 tank pressure relief regulating valve is opened to carry out pressure relief regulation on the pressure of the yeast storage tank 9, and the tank is always maintained at the micro-positive pressure of 0.005 Mpa.
Example 2
Referring to FIG. 2, the difference between this embodiment and embodiment 1 is that a tank top device 5 is connected to a pressure-air sterile membrane filter 3, the tank top device 5 includes a back pressure-air line three-way valve 5-1, a back pressure-air line regulating valve 5-2, a tank pressure-relief regulating valve 5-3, a cleaning pressure-relief regulating valve line pneumatic valve 5-4, a cleaning back pressure-air line pneumatic valve 5-5 and a tank vacuum valve 5-6, the back pressure-air line three-way valve 5-1 is connected to the pressure-air line 1, the cleaning pressure-relief regulating valve line pneumatic valve 5-4 is communicated with the inside of a yeast storage tank 9, the back pressure-air line regulating valve 5-2, the tank pressure-relief regulating valve 5-3, the cleaning back pressure-air line pneumatic valve 5-5 and the tank vacuum valve 5-6 constitute a circulation loop with the back pressure-air line three-way valve 5-1 and the cleaning pressure-relief regulating valve line pneumatic valve 5-4, opening a 5-1 backpressure air-pressure pipeline three-way valve, cleaning and draining the sewage, and a 5-2 backpressure air-pressure pipeline adjusting valve through an air-pressure pipe 1, an air-pressure sterile membrane filter 3 and a tank top device 5 to carry out pressure air-pressure backpressure on a yeast storage tank 9, wherein the backpressure is 0.03Mpa,
in the tank body cleaning process, all dead corners of the tank top device 5 must be cleaned: opening a 5-5 cleaning back pressure air pipeline pneumatic valve and a 5-2 back pressure air pipeline adjusting valve to carry out CIP cleaning on the back pressure pipeline which is emptied to the tank body, opening a small blowdown valve matched with a 5-1 three-way valve at a gap, and cleaning a leakage cavity of the 5-1 three-way valve; and opening a 5-4 cleaning pressure relief regulating valve pipeline pneumatic valve and a 5-3 tank pressure relief regulating valve to clean the pressure relief pipeline and the 5-6 tank vacuum valve.
After the CIP cleaning of the yeast storage tank 9 is finished, the yeast storage tank 9 is adjusted to the micro positive pressure of 0.005Mpa by the tank top device 5, and the tank pressure is detected by the yeast storage tank pressure sensor 8.
After the sterile water is fed into the yeast storage tank 9, the dry yeast feeding port 6 is opened, a defined amount of dry yeast is fed into the yeast storage tank 9, in the process, a 5-1 backpressure pressure air pipeline three-way valve is opened through the pressure air pipe 1, the pressure air sterile membrane filter 3 and the tank top device 5 to clean and discharge sewage, a 5-2 backpressure air pipeline adjusting valve is used for carrying out pressure air gap backpressure on the yeast storage tank 9 to keep the micro-positive pressure of the yeast storage tank 9, after the dry yeast feeding is finished, the dry yeast feeding port 6 and the cover are disinfected by 75% alcohol cotton, and the cover is covered.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. An automatic dry yeast adding system comprises an air compression pipe (1), an aseptic membrane filter (20), a yeast storage tank (9) and a CIP header pipe (2), and is characterized in that the air compression pipe (1) is connected with the air compression aseptic membrane filter (3), the air compression aseptic membrane filter (3) is connected with a tank top device (5), the CIP header pipe (2) is sequentially provided with a first CIP pipeline partition pneumatic valve (4), a second CIP pipeline partition pneumatic valve (18) and a third CIP pipeline partition pneumatic valve (28), the tank top device (5) and the yeast storage tank (9) are connected with each other, the upper end of the yeast storage tank (9) is respectively provided with a yeast storage tank pressure sensor (8), a dry yeast adding port (6) and a yeast storage tank stirring valve (25), and the yeast storage tank stirring valve (25) is further provided with a yeast storage tank CIP washing ball (24), a CIP dry yeast feeding port branch pneumatic valve (7) is installed between the dry yeast feeding port (6) and the CIP main pipe (2), a yeast storage tank continuous liquid level sensor (11), a sampling valve (12) and a yeast storage tank air liquid level probe (27) are respectively and fixedly installed at the lower end of the yeast storage tank (9), a yeast storage tank outlet three-way valve (26) and a fourth CIP pipeline partition pneumatic valve (16) are installed at the joint of the yeast storage tank air liquid level probe (27) and the CIP main pipe (2), the sampling valve (12) is connected with a CIP sampling valve branch manual valve (10), and an adding structure is further installed on the yeast storage tank outlet three-way valve (26);
and a three-way valve (17) is arranged on the CIP main pipe (2) between the fourth CIP pipeline isolating pneumatic valve (16) and the second CIP pipeline isolating pneumatic valve (18), and a filtering structure is arranged at the other end of the three-way valve (17).
2. The automatic dry yeast adding system according to claim 1, wherein the tank top device (5) comprises a back pressure air pipeline three-way valve (5-1), a back pressure air pipeline adjusting valve (5-2), a tank body pressure and pressure relief adjusting valve (5-3), a cleaning pressure relief adjusting valve pipeline pneumatic valve (5-4), a cleaning back pressure air pipeline pneumatic valve (5-5) and a tank body vacuum valve (5-6), the back pressure air pipeline three-way valve (5-1) is connected with the air pipeline (1), the cleaning pressure relief adjusting valve pipeline pneumatic valve (5-4) is communicated with the interior of the yeast storage tank (9), and the back pressure air pipeline adjusting valve (5-2), the tank body pressure adjusting valve (5-3), the cleaning back pressure air pipeline pneumatic valve (5-5) and the tank body vacuum valve (5-6) are communicated with the back pressure air pipeline three-way valve (5-2) The through valve (5-1) and the pneumatic valve (5-4) of the cleaning pressure relief regulating valve pipeline form a circulation loop.
3. The automatic dry yeast adding system as claimed in claim 1, wherein the adding structure comprises a yeast adding pipeline Q-shaped valve (14), a yeast adding rotor pump (13) and a yeast adding pipeline (15), the yeast adding pipeline Q-shaped valve (14) is connected with a yeast storage tank outlet three-way valve (26), and the yeast adding rotor pump (13) is connected between the yeast adding pipeline Q-shaped valve (14) and the yeast adding pipeline (15).
4. The automatic dry yeast feeding system according to claim 1, wherein the filtering structure comprises a sterile water membrane filter outlet pneumatic valve (19), a sterile water membrane filter (20) and a sterile water membrane filter inlet pneumatic valve (21), the sterile water membrane filter (20) is connected with the three-way valve (17) through the sterile water membrane filter outlet pneumatic valve (19), and the sterile water membrane filter inlet pneumatic valve (21) is installed on the sterile water membrane filter (20).
5. The automatic dry yeast adding system according to claim 4, wherein the sterile water membrane filter inlet pneumatic valve (21) is connected with a temperature sensor (22), and the temperature sensor (22) is connected with a temperature regulating valve (23).
6. The automatic dry yeast adding system as claimed in claim 5, wherein the temperature regulating valve (23) is communicated with the brewing water pipeline, the ice water pipeline and the hot water pipeline through three pipelines respectively.
7. An automatic dry yeast dosing system according to claim 1, wherein the effective volume of the yeast tank (9) is 100 HL.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110665555.8A CN113388463B (en) | 2021-06-16 | 2021-06-16 | Automatic dry yeast adding system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110665555.8A CN113388463B (en) | 2021-06-16 | 2021-06-16 | Automatic dry yeast adding system |
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| CN113388463A CN113388463A (en) | 2021-09-14 |
| CN113388463B true CN113388463B (en) | 2022-06-07 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205328987U (en) * | 2016-01-29 | 2016-06-22 | 温州市啤酒设备成套有限公司 | Yeast expands banks up device with earth |
| CN211771159U (en) * | 2019-11-01 | 2020-10-27 | 广州冠劢生物技术有限公司 | Automatic yeast feeding device of beer machine |
| CN112143593A (en) * | 2019-06-28 | 2020-12-29 | 山东克朗生物装备有限公司 | CIP washs and yeast or hops adds all-in-one |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202683538U (en) * | 2012-05-29 | 2013-01-23 | 上海弗杏康生物科技有限公司 | Full-automatic adding regulation device for cleaning agent |
| AU2016314266B2 (en) * | 2015-09-01 | 2021-04-01 | Natural Brew Inc | Systems, devices, and methods for introducing additives to a pressurised vessel |
| CN108786660A (en) * | 2018-07-27 | 2018-11-13 | 利安隆（中卫）新材料有限公司 | A kind of continuous automatic charging device of self-cleaning powder |
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2021
- 2021-06-16 CN CN202110665555.8A patent/CN113388463B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205328987U (en) * | 2016-01-29 | 2016-06-22 | 温州市啤酒设备成套有限公司 | Yeast expands banks up device with earth |
| CN112143593A (en) * | 2019-06-28 | 2020-12-29 | 山东克朗生物装备有限公司 | CIP washs and yeast or hops adds all-in-one |
| CN211771159U (en) * | 2019-11-01 | 2020-10-27 | 广州冠劢生物技术有限公司 | Automatic yeast feeding device of beer machine |
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