Yeast culture device

Abstract

The yeast culture device comprises a tank body, a stirring mechanism, an oxygen supply mechanism and a coil pipe assembly, the stirring mechanism comprises a power device, a stirring shaft and stirring blades, the power device is installed on the top of the tank body, the stirring shaft and the stirring blades are arranged in the tank body, the upper end of the stirring shaft is connected with the power output end of the power device, and the lower end of the stirring shaft is connected with the coil pipe assembly. The lower end of the stirring shaft extends to the bottom of the tank body, a plurality of groups of stirring blades are distributed on the stirring shaft, and the oxygen supply mechanism and the coil pipe assembly are respectively arranged in the tank body; a feed port is formed in the upper part of the tank body, and a discharge port is formed in the bottom of the tank body. The yeast culture device is designed aiming at the developed automatic production mode of yeast culture at present, is simple in structure and principle, can effectively improve the automatic production of the yeast culture, is stable in yeast culture quality and high in culture efficiency, further provides assistance for the automatic production of a soy sauce brewing process, and is suitable for popularization and application. And the manual labor can be greatly reduced, the production efficiency is improved, and the production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of soy sauce brewing, in particular to a yeast culture device. Background Art

[0002] In the soy sauce brewing production process, yeast needs to be added during the soy sauce fermentation stage, and yeast is formed by fermentation of culture medium and yeast. In the traditional production process, yeast cultivation is often completed by manual operation, and there are not too many requirements for the equipment used for yeast cultivation. However, with the continuous improvement and improvement of the automated production process of soy sauce brewing, the traditional manual operation is inefficient, and its yeast cultivation amount is gradually unable to meet the needs of the soy sauce production process. For this reason, an automated production method for yeast cultivation has gradually been developed. However, the traditional yeast cultivation device is obviously not suitable for the automated production needs. Therefore, it is necessary to develop a yeast cultivation device that can adapt to the automated production process. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a yeast culture device which can be applied to an automated yeast production line, has stable yeast culture quality and high culture efficiency, and can provide assistance for the automated production of soy sauce.

[0004] The technical scheme of the utility model is: a yeast culture device, including a tank body, a stirring mechanism, an oxygen supply mechanism and a coil assembly, the stirring mechanism including a power device, a stirring shaft and a stirring blade, the power device is installed on the top of the tank body, the stirring shaft and the stirring blade are arranged in the tank body, the upper end of the stirring shaft is connected to the power output end of the power device, the lower end of the stirring shaft extends to the bottom of the tank body, and multiple groups of stirring blades are distributed on the stirring shaft. The oxygen supply mechanism and the coil assembly are also arranged in the tank body respectively; the upper part of the tank body is provided with a feed port, and the bottom of the tank body is provided with a discharge port. Among them, the tank body is the main body of the entire yeast culture device, and a relatively independent sealed space is formed inside it, which provides a good environment for yeast culture. The feed port and the discharge port are respectively connected to the feeding device and the downstream soy sauce brewing process through corresponding pipelines and valves. The stirring mechanism is used to stir the culture medium evenly in the sterilization stage to ensure that the culture medium is fully sterilized. The oxygen supply mechanism provides clean air or oxygen to the material (i.e., the mixture of the culture medium and yeast) in the fermentation stage to make it fully fermented. The coil assembly is used to heat, cool or keep the materials in the tank warm by passing steam or water of different temperatures at different stages.

[0005] The oxygen supply mechanism includes an oxygen supply interface, an air intake pipe and an oxygen supply distribution pipe connected in sequence, the oxygen supply interface is arranged on the outer wall of the tank body, the oxygen supply distribution pipe is arranged at the bottom of the tank body, and the air intake pipe is connected between the oxygen supply interface and the oxygen supply distribution pipe in the tank body. The oxygen supply interface is externally connected to an external oxygen supply device, and the clean air or oxygen provided by the external oxygen supply device enters the air intake pipe in the tank body through the oxygen supply interface, and is then sent to the oxygen supply distribution pipe at the bottom of the tank body by the air intake pipe, and is evenly distributed in the material through the oxygen supply distribution pipe.

[0006] In the oxygen supply mechanism, at least one auxiliary fixing frame is also provided on the air inlet pipe, and the auxiliary fixing frame is fixedly installed on the inner wall of the tank body. Since the tank body is generally high, in order to avoid the air inlet pipe being difficult to stably support in the tank body, the auxiliary fixing frame can be provided to stably install the air inlet pipe in the tank body, thereby ensuring the normal and stable operation of the equipment.

[0007] The coil assembly is arranged in the middle and lower part of the tank body, and includes multiple groups of coils arranged in sequence from top to bottom, each group of coils is respectively provided with a coil inlet and a coil outlet, and the coil inlet and the coil outlet are respectively arranged on the outer wall of the tank body. Each group of coils is arranged in parallel, and the use of multiple groups of coils in parallel can improve the heating efficiency, cooling efficiency or insulation efficiency at each stage.

[0008] The coil assembly is externally connected to a steam supply device, a hot water supply device and a cold water supply device, and the steam supply device, the hot water supply device and the cold water supply device are arranged in parallel. In the sterilization stage, each coil assembly is connected to the steam supply device, and the steam is provided by the steam supply device, and the steam heats the culture medium in the tank body through each group of coils. In the insulation stage, each coil assembly is connected to the hot water supply device, and the hot water is provided by the hot water supply device, and the hot water is used to keep the culture medium in the tank body warm through each group of coils. In the cooling stage, each coil assembly is connected to the cold water supply device, and the cold water is provided by the cold water supply device, and the cold water cools the culture medium in the tank body through each group of coils until the temperature of the culture medium is about 31°C.

[0009] The outer periphery of the tank body is also provided with a heat-insulating jacket, which can further dissipate heat, so that the material in the tank body can be kept within a certain temperature range, thereby improving the stability of yeast culture.

[0010] A temperature sensor is also provided on the outer wall of the tank, and a notch is left in the heat-insulating jacket at the location where the temperature sensor is installed. The temperature sensor is used to monitor the temperature of the material in the tank in real time.

[0011] The tank body is also provided with a CIP cleaning interface on the top, which extends into the tank body and is connected to a CIP nozzle at the bottom. The CIP cleaning interface is connected to an external cleaning device, and when the yeast culture is completed, the cleaning device can be started to clean the tank body through the CIP cleaning interface and the CIP nozzle.

[0012] The top of the tank is also provided with a manhole for easy inspection, maintenance, care or manual observation of the equipment.

[0013] When the yeast culture device is used, each component can be connected to the control device of the overall equipment, so that the yeast culture device forms an automated operation and greatly reduces manual intervention. The specific process of yeast culture is as follows:

[0014] (1) Feeding stage: The feed port is connected to the pump and the feeding device through a pipeline, and the culture medium enters the tank from the feed port;

[0015] (2) Sterilization stage: start the power device of the stirring mechanism and introduce steam into the coil assembly to heat the culture medium during the stirring process until the temperature of the culture medium reaches 100°C, and keep the culture medium at 100°C for a set holding time, then turn off the steam supply device;

[0016] (3) Insulation stage: The hot water supply device is turned on, and the hot water is used to insulate the culture medium in the tank through the coil assembly until the set insulation time, after which the steam supply device is turned off;

[0017] (4) Cooling stage: Turn on the cold water supply device, and the cooling water cools the culture medium in the tank through the coil assembly until the culture medium temperature approaches 31°C, and then turn off the cold water supply device;

[0018] (5) Fermentation stage: Yeast is added into the tank through the feed port, and the temperature of the culture medium in the tank is maintained at the set value. At the same time, clean air is introduced into the tank through the oxygen supply mechanism to continuously supply oxygen to the culture medium. During the fermentation process, the culture medium is sampled and tested at regular intervals;

[0019] (6) Discharging stage: When the sampling test is qualified, the culture medium is fermented to form yeast liquid, which is sent to the next process or collection device through the discharging port;

[0020] (7) CIP cleaning stage: After the discharge is completed, the cleaning device connected to the CIP cleaning interface is started to clean the tank body through the CIP nozzle;

[0021] (8) Sterilization stage: After cleaning is completed, the steam supply device is turned on, and the steam passes through the coil assembly to heat and sterilize the inside of the tank.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The yeast culture device is designed for the currently developed automated production method of yeast culture, and has a simple structure and principle. By connecting the valves connected to the oxygen supply mechanism, coil assembly, feed port, discharge port, oxygen supply interface, CIP cleaning interface and other components, the power device on the stirring device, the temperature sensor and other devices to the control device of the overall equipment (the control system is the existing control system), the control device controls them uniformly, which can effectively improve the automated production of yeast culture, and the yeast culture quality is stable and the culture efficiency is high, which further provides support for the automated production of soy sauce brewing process, and can significantly reduce manual labor, improve production efficiency, and also help reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the principle of the yeast culture device.

[0025] In the above drawings, the components indicated by the respective reference numerals are as follows: 1 is a tank body, 2 is a power device, 3 is a stirring shaft, 4 is a stirring blade, 5 is an oxygen supply interface, 6 is an air inlet pipe, 7 is an oxygen supply distribution pipe, 8 is an auxiliary fixing frame, 9 is a coil, 10 is a coil inlet, 11 is a coil outlet, 12 is a thermal insulation jacket, 13 is a notch, 14 is a CIP cleaning interface, 15 is a CIP nozzle, 16 is a manhole, 17 is a feed inlet, and 18 is a discharge outlet. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.

[0027] Example

[0028] This embodiment provides a yeast culture device, such as Figure 1As shown, it includes a tank body 1, a stirring mechanism, an oxygen supply mechanism and a coil assembly. The stirring mechanism includes a power device 2, a stirring shaft 3 and a stirring blade 4. The power device is installed on the top of the tank body, the stirring shaft and the stirring blade are arranged in the tank body, the upper end of the stirring shaft is connected to the power output end of the power device, the lower end of the stirring shaft extends to the bottom of the tank body, and multiple groups of stirring blades are distributed on the stirring shaft. The oxygen supply mechanism and the coil assembly are also arranged in the tank body respectively; the upper part of the tank body is provided with a feed inlet 17, and the bottom of the tank body is provided with a discharge port 18. Among them, the tank body is the main body of the entire yeast culture device, and a relatively independent sealed space is formed inside it, which provides a good environment for yeast culture. The feed inlet and the discharge port are respectively connected to the feeding device and the downstream soy sauce brewing process through corresponding pipes and valves. The stirring mechanism is used to stir the culture medium evenly in the sterilization stage to ensure that the culture medium is fully sterilized. The oxygen supply mechanism provides clean air or oxygen to the material (i.e., the mixture of the culture medium and yeast) in the fermentation stage to enable it to be fully fermented. The coil assembly is used to heat, cool or keep the materials in the tank warm by passing steam or water of different temperatures at different stages.

[0029] The oxygen supply mechanism includes an oxygen supply interface 5, an air intake pipe 6 and an oxygen supply distribution pipe 7 which are connected in sequence. The oxygen supply interface is arranged on the outer wall of the tank body, the oxygen supply distribution pipe is arranged at the bottom of the tank body, and the air intake pipe is connected between the oxygen supply interface and the oxygen supply distribution pipe in the tank body. Among them, the oxygen supply interface is externally connected to an external oxygen supply device. After the clean air or oxygen provided by the external oxygen supply device enters the air intake pipe in the tank body through the oxygen supply interface, it is sent to the oxygen supply distribution pipe at the bottom of the tank body by the air intake pipe, and is evenly distributed in the material through the oxygen supply distribution pipe. In the oxygen supply mechanism, at least one auxiliary fixing frame 8 is also provided on the air intake pipe, and the auxiliary fixing frame is fixedly installed on the inner wall of the tank body. Since the height of the tank body is generally large, in order to avoid the difficulty of stably supporting the air intake pipe in the tank body, the air intake pipe can be stably installed in the tank body through the setting of the auxiliary fixing frame, so as to ensure the normal and stable operation of the equipment.

[0030] The coil assembly is arranged in the middle and lower part of the tank body, including multiple groups of coils 9 arranged in sequence from top to bottom, each group of coils is respectively provided with a coil inlet 10 and a coil outlet 11, and the coil inlet and the coil outlet are respectively arranged on the outer wall of the tank body. Each group of coils is arranged in parallel, and the heating efficiency, cooling efficiency or insulation efficiency of each stage can be improved by adopting the form of multiple groups of coils in parallel. The coil assembly is externally connected to a steam supply device, a hot water supply device and a cold water supply device, and the steam supply device, the hot water supply device and the cold water supply device are arranged in parallel. In the sterilization stage, each coil assembly is connected to the steam supply device, and the steam is provided by the steam supply device, and the steam heats the culture medium in the tank body through each group of coils. In the insulation stage, each coil assembly is connected to the hot water supply device, and the hot water is provided by the hot water supply device, and the hot water is used to keep the culture medium in the tank body warm through each group of coils. During the cooling stage, each coil assembly is connected to a cold water supply device, which provides cold water. The cold water cools the culture medium in the tank through each group of coils until the culture medium temperature is about 31°C.

[0031] The outer periphery of the tank body is also provided with a heat-insulating jacket 12, which can further dissipate heat, so that the material in the tank body can be kept within a certain temperature range, thereby improving the stability of yeast culture.

[0032] A temperature sensor (not shown) is also provided on the outer wall of the tank body, and a notch 13 is left at the location where the temperature sensor is installed in the heat-insulating jacket. The temperature sensor is used to monitor the temperature of the material in the tank body in real time.

[0033] The top of the tank body is also provided with a CIP cleaning interface 14, which extends into the tank body and is connected to a CIP nozzle 15 at the bottom. The CIP cleaning interface is connected to an external cleaning device. When the yeast culture is completed, the cleaning device can be started to clean the tank body through the CIP cleaning interface and the CIP nozzle.

[0034] A manhole 16 is also provided on the top of the tank body for easy inspection, maintenance, care or manual observation of the equipment.

[0035] When the yeast culture device is used, each component is connected to the control device of the overall equipment (the control device can adopt the existing control device that has been developed), so that the yeast culture device forms an automated operation and greatly reduces manual intervention. The specific process of yeast culture is as follows:

[0036] (1) Feeding stage: The feed port is connected to the pump and the feeding device through a pipeline, and the culture medium enters the tank from the feed port;

[0037] (2) Sterilization stage: start the power device of the stirring mechanism and introduce steam into the coil assembly to heat the culture medium during the stirring process until the temperature of the culture medium reaches 100°C, and keep the culture medium at 100°C for a set holding time, then turn off the steam supply device;

[0038] (3) Insulation stage: The hot water supply device is turned on, and the hot water is used to insulate the culture medium in the tank through the coil assembly until the set insulation time, after which the steam supply device is turned off;

[0039] (4) Cooling stage: Turn on the cold water supply device, and the cooling water cools the culture medium in the tank through the coil assembly until the culture medium temperature approaches 31°C, and then turn off the cold water supply device;

[0040] (5) Fermentation stage: Yeast is added into the tank through the feed port, and the temperature of the culture medium in the tank is maintained at the set value. At the same time, clean air is introduced into the tank through the oxygen supply mechanism to continuously supply oxygen to the culture medium. During the fermentation process, the culture medium is sampled and tested at regular intervals;

[0041] (6) Discharging stage: When the sampling test is qualified, the culture medium is fermented to form yeast liquid, which is sent to the next process or collection device through the discharging port;

[0042] (7) CIP cleaning stage: After the discharge is completed, the cleaning device connected to the CIP cleaning interface is started to clean the tank body through the CIP nozzle;

[0043] (8) Sterilization stage: After cleaning is completed, the steam supply device is turned on, and the steam passes through the coil assembly to heat and sterilize the inside of the tank.

[0044] As described above, the present invention can be better implemented. The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made based on the content of the present invention are covered by the scope of protection required by the claims of the present invention.

Claims

1. A yeast culture device, characterized in that: It includes a tank body, a stirring mechanism, an oxygen supply mechanism and a coil assembly. The stirring mechanism includes a power device, a stirring shaft and stirring blades. The power device is installed on the top of the tank body. The stirring shaft and the stirring blades are arranged in the tank body. The upper end of the stirring shaft is connected to the power output end of the power device. The lower end of the stirring shaft extends to the bottom of the tank body. Multiple groups of stirring blades are distributed on the stirring shaft. The oxygen supply mechanism and the coil assembly are also arranged in the tank body respectively. A feed inlet is arranged on the upper part of the tank body, and a discharge outlet is arranged at the bottom of the tank body. The coil assembly is arranged in the middle and lower part of the tank body, and includes multiple groups of coils arranged in sequence from top to bottom. Each group of coils is respectively provided with a coil inlet and a coil outlet, and the coil inlet and the coil outlet are respectively arranged on the outer wall of the tank body.

2. A yeast culture device according to claim 1, characterized in that: The oxygen supply mechanism includes an oxygen supply interface, an air intake pipe and an oxygen supply distribution pipe connected in sequence. The oxygen supply interface is arranged on the outer wall of the tank body, the oxygen supply distribution pipe is arranged at the bottom of the tank body, and the air intake pipe is connected between the oxygen supply interface and the oxygen supply distribution pipe in the tank body.

3. A yeast culture device according to claim 2, characterized in that: In the oxygen supply mechanism, at least one auxiliary fixing frame is also provided on the air inlet pipe, and the auxiliary fixing frame is fixedly installed on the inner wall of the tank body.

4. A yeast culture device according to claim 1, characterized in that: The coil assembly is externally connected to a steam supply device, a hot water supply device and a cold water supply device, and the steam supply device, the hot water supply device and the cold water supply device are arranged in parallel.

5. The yeast culture device according to claim 1, characterized in that: The outer periphery of the tank body is also provided with a heat-insulating jacket.

6. A yeast culture device according to claim 5, characterized in that: A temperature sensor is also arranged on the outer wall of the tank, and a notch is left in the insulation jacket at the location where the temperature sensor is installed.

7. The yeast culture device according to claim 1, characterized in that: A CIP cleaning interface is also provided on the top of the tank body, the CIP cleaning interface extends into the tank body and is connected to a CIP nozzle at the bottom.

8. The yeast culture device according to claim 1, characterized in that: A manhole is also provided on the top of the tank body.

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