Saccharifying and fermenting tank for yellow rice wine brewing

Abstract

The application discloses a saccharifying and fermenting tank for yellow rice wine brewing, which comprises a base, a tank body fixedly installed on the base, a top plate arranged on the tank body, a motor fixedly installed on the top plate, a rotating shaft fixedly installed on an output shaft of the motor and penetrating through the top plate, a plurality of stirring blades equidistantly arranged on the rotating shaft, two connecting plates arranged in the tank body, scrapers fixedly installed on one side of the two connecting plates, and first connecting rods and second connecting rods fixedly installed on one side of the two connecting plates. By starting the motor, the rotating shaft drives the connecting plates to rotate through the first connecting rods and the second connecting rods, so that the two scrapers scrape the inner wall of the tank body, the adhered starch paste, vinasse or saccharifying liquid is stripped, and is returned to the central area of the tank body to participate in mixing, so that the material is prevented from accumulating on the wall to form a dead angle, the breeding of miscellaneous bacteria on the wall is inhibited, and the yellow rice wine flavor substances are prevented from being interfered by metabolic products of the miscellaneous bacteria.

Description

Technical Field

[0001] This application relates to the field of rice wine brewing technology, and in particular to saccharification and fermentation tanks for rice wine brewing. Background Technology

[0002] Yellow wine is a brewed wine made from grains, using wheat koji or small koji as saccharification and fermentation agents. Historically, the raw material for yellow wine production was millet (scientific name: Setaria italica, in ancient times, it was a general term for sorghum, millet, and sorghum, sometimes also called sorghum, and now also called millet, the hulled part is called millet) in the north; in the south, rice (glutinous rice is the best material) was generally used as the raw material for brewing yellow wine.

[0003] Existing saccharification and fermentation tanks for rice wine brewing suffer from several problems during operation. Starch gelatinization, lees, or saccharification liquid easily adhere to the inner walls, causing material buildup and creating dead zones. This leads to interference from the metabolic products of other microorganisms affecting the flavor of the rice wine. Furthermore, during stirring, some raw materials tend to accumulate at the discharge pipe and bottom of the tank, preventing complete coverage of the saccharification reaction. After fermentation, the discharge port becomes clogged due to the high viscosity and particle accumulation of the material. Therefore, a new saccharification and fermentation tank for rice wine brewing is proposed to address these issues. Utility Model Content

[0004] This embodiment addresses the problems of starch gelatinization and fermentation tanks used for rice wine brewing, such as the tendency for starch gelatinization to adhere to the inner wall of the tank, creating dead zones that interfere with flavor, the tendency for raw materials to accumulate at the discharge pipe and bottom of the tank during stirring, affecting the full coverage of saccharification, and the tendency for the discharge port to become clogged due to the accumulation of viscous particles.

[0005] According to one aspect of this application, a saccharification and fermentation tank for brewing rice wine is provided, comprising a base, a tank body fixedly mounted on the base, a top plate provided on the tank body, a motor fixedly mounted on the top plate, a rotating shaft fixedly mounted through the output shaft of the motor, a plurality of equally spaced stirring blades provided on the rotating shaft, two connecting plates provided inside the tank body, a scraper fixedly mounted on one side of each of the two connecting plates, a first connecting rod and a second connecting rod fixedly mounted on one side of each of the two connecting plates, one end of each of the first connecting rods and the second connecting rods being fixedly mounted to the same rotating shaft, a discharge pipe connected to the bottom end of the tank body, one end of the rotating shaft extending into the interior of the discharge pipe, and a spiral blade provided on the rotating shaft at the position of the discharge pipe.

[0006] In this technical solution, a spiral coil is wound around the tank body, and a drain valve is provided at one end of the coil.

[0007] In this technical solution, an insulation layer is provided around the coil, and the insulation layer is fixedly connected to the tank body.

[0008] In this technical solution, a valve is provided on the discharge pipe.

[0009] In this technical solution, a threaded pipe is threadedly connected to the discharge pipe, and a filter screen is installed on the threaded pipe.

[0010] In this technical solution, a sealing plate is provided on the top plate, and a sealing interface is provided on the tank body. The top plate and the tank body are fixed by the sealing plate and the sealing interface.

[0011] In this technical solution, a feed pipe is provided on the top plate, and a flange cover is provided on the feed pipe.

[0012] In this technical solution, an exhaust pipe is fixedly installed on the top plate, and a pressure balancing valve is provided on the exhaust pipe.

[0013] In this technical solution, a viewing mirror is fixedly installed on the top plate.

[0014] In this technical solution, the bottom end of the base is fixedly equipped with three support legs.

[0015] Through the above embodiments of this application, by starting the motor, the rotating shaft drives the connecting plate to rotate through the first connecting rod and the second connecting rod, so that the two scrapers scrape the inner wall of the tank, peel off the adhering starch gelatinized material, lees or saccharified liquid, and let it return to the central area of ​​the tank to participate in the mixing, so as to avoid the accumulation of materials on the wall to form dead corners, inhibit the reproduction of miscellaneous bacteria on the wall, and prevent the flavor substances of rice wine from being interfered with by the metabolic products of miscellaneous bacteria.

[0016] By setting up spiral blades, when the shaft rotates forward, the spiral blades lift the material in the discharge pipe upward and recirculate it to the upper part of the tank, where it mixes with fresh raw materials and saccharifying agents. This prevents the raw materials from accumulating in the discharge pipe or at the bottom of the tank, ensuring full coverage of the saccharification reaction, enhancing material flowability, accelerating starch gelatinization and hydrolysis of saccharifying enzymes, and shortening saccharification time. After fermentation, the shaft is driven to rotate in reverse. The spiral blades generate axial thrust as they rotate, pushing the lees in the discharge pipe downward to form a controllable continuous feed flow. This avoids the clogging problems caused by high material viscosity and particle accumulation at traditional static discharge ports.

[0017] By incorporating a threaded tube and a filter screen, the filter screen on the threaded tube allows the wine to pass through while intercepting the lees, achieving solid-liquid separation during the discharge process. This reduces the load on subsequent pressing or filtration processes, prevents lees from mixing into the wine and affecting the clarity of the finished product, and improves the quality of the rice wine. The threaded tube is connected to the discharge pipe via threads, allowing for quick assembly and disassembly. After fermentation, the threaded tube can be directly removed to perform high-pressure rinsing or steam sterilization of the filter screen and the inner wall of the threaded tube, avoiding cross-contamination. At the same time, replacing filter screens with different pore sizes or adjusting the separation precision for different raw materials only requires replacing the threaded tube. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the overall internal structure of an embodiment of this application;

[0021] Figure 3 This is a side view of the internal structure of an embodiment of this application.

[0022] In the diagram: 1. Tank body; 2. Insulation layer; 3. Agitator blades; 4. Sealing interface; 5. Sealing plate; 6. Flange cover; 7. Feed pipe; 8. First connecting rod; 9. Motor; 10. Shaft; 11. Sight glass; 12. Top plate; 13. Exhaust pipe; 14. Pressure balancing valve; 15. Scraper; 16. Connecting plate; 17. Coil; 18. Base; 19. Support leg; 20. Spiral blades; 21. Discharge pipe; 22. Filter screen; 23. Threaded pipe; 24. Valve; 25. Second connecting rod. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0026] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0027] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Please see Figure 1-3 As shown, a saccharification and fermentation tank for brewing rice wine includes a base 18, on which a tank body 1 is fixedly installed. A top plate 12 is provided on the tank body 1, and a motor 9 is fixedly installed on the top plate 12. The output shaft of the motor 9 passes through the top plate 12 and is fixedly installed with a rotating shaft 10. Multiple equidistant stirring blades 3 are provided on the rotating shaft 10. Two connecting plates 16 are provided inside the tank body 1. A scraper 15 is fixedly installed on one side of each of the two connecting plates 16. A first connecting rod 8 and a second connecting rod 25 are fixedly installed on one side of each of the two connecting plates 16. One end of each of the first connecting rod 8 and the second connecting rod 25 is fixedly installed to the same rotating shaft 10. The bottom end of the tank body 1 is connected to a discharge pipe 21. One end of the rotating shaft 10 extends into the interior of the discharge pipe 21. A spiral blade 20 is provided on the rotating shaft 10 at the position of the discharge pipe 21.

[0030] In this technical solution, a spiral coil 17 is wound around the tank body 1, and a drain valve is provided at one end of the coil 17.

[0031] In this technical solution, an insulation layer 2 is provided around the coil 17, and the insulation layer 2 is fixedly connected to the tank body 1.

[0032] In this technical solution, a valve 24 is provided on the discharge pipe 21.

[0033] In this technical solution, a threaded pipe 23 is threadedly connected to the discharge pipe 21, and a filter screen 22 is provided on the threaded pipe 23.

[0034] In this technical solution, a sealing plate 5 is provided on the top plate 12, and a sealing interface 4 is provided on the tank body 1. The top plate 12 and the tank body 1 are fixed to the sealing interface 4 through the sealing plate 5.

[0035] In this technical solution, a feed pipe 7 is provided on the top plate 12, and a flange cover 6 is provided on the feed pipe 7.

[0036] In this technical solution, an exhaust pipe 13 is fixedly installed on the top plate 12, and a pressure balancing valve 14 is provided on the exhaust pipe 13.

[0037] In this technical solution, a viewing mirror 11 is fixedly installed on the top plate 12.

[0038] In addition, sterile air or nitrogen inlet pipes can be installed on tank 1. Sterile air is introduced during the saccharification stage to promote enzyme activity, and nitrogen is introduced during the later stage of fermentation to isolate oxygen and inhibit miscellaneous bacteria.

[0039] Temperature sensor interface is used to monitor the temperature of the main body of the fermentation broth and feed it back to the temperature control system to adjust the flow of refrigerant in the jacket.

[0040] The pH detection interface connects to a pH electrode to monitor the acidity and alkalinity of the fermentation broth and determine yeast activity and the risk of contamination by other microorganisms.

[0041] Dissolved oxygen sensor interface is used to monitor the dissolved oxygen content of the fermentation broth and guide the aeration strategy during the saccharification stage and the anaerobic control during the main fermentation period;

[0042] The sampling valve is used to periodically sample and test indicators such as sugar content, alcohol content, and acidity, allowing monitoring of the fermentation status without opening the tank;

[0043] The level gauge interface is used to connect a magnetic float level gauge or a radar level gauge to monitor the level of the fermentation broth and prevent overflow or dry running; these are all existing technologies and will not be described in detail in this application.

[0044] In this technical solution, the bottom end of the base 18 is fixedly installed with three support legs 19.

[0045] In use, all electrical components mentioned in this application are externally connected to a power supply and control switch. The flange cover 6 is opened, and raw materials, saccharifying agent, water, and yeast are added through the feed pipe 7. The motor 9 is started, and its output shaft drives the rotating shaft 10 to rotate. The stirring blades 3 disperse the raw material particles through mechanical shearing force, increasing the contact area between starch and saccharifying enzymes, and accelerating the hydrolysis of starch into fermentable sugars such as glucose. During fermentation, stirring ensures even distribution of yeast, preventing localized oxygen deficiency or nutrient insufficiency. Light passes through the sight glass 11 into the operator's eye or camera, allowing direct observation of the material state inside the tank, such as foam height, fermentation liquid color, and stirring effect, to help determine if the fermentation process is normal. The exhaust pipe 13 is used to discharge CO2 produced during fermentation, maintaining stable pressure inside the tank and preventing excessive pressure from affecting fermentation or the structural integrity of the tank 1. The pressure balancing valve 14 on the exhaust pipe 13 allows for unidirectional gas flow, preventing backflow of external air. When the pressure inside the tank increases due to temperature rise, gas is discharged through valve 24. When the temperature drops, a small amount of external air enters to replenish the pressure, preventing negative pressure from damaging the tank 1. The refrigerant circulates through coil 17. During the saccharification stage, high-temperature water is introduced to raise the tank temperature, and during the fermentation stage, low-temperature water or ethylene glycol solution is introduced to lower the tank temperature. The temperature sensor provides real-time feedback to adjust the refrigerant flow rate. The temperature sensor inside the tank 1 is used to monitor the fermentation liquid temperature in real time, accurately controlling the saccharification and fermentation environment. The sensor converts the temperature signal into an electrical signal and transmits it to the control system. The system adjusts the refrigerant flow rate in the jacket according to the preset temperature range to achieve heating or cooling. The discharge pipe 21 is used to discharge the lees or finished wine, completing the brewing closed loop. A slag discharge port is located in the center of the conical tank bottom.

[0046] The motor 9 is started, and the rotating shaft 10 drives the connecting plate 16 to rotate via the first connecting rod 8 and the second connecting rod 25. This causes the two scrapers 15 to scrape the inner wall of the tank 1, peeling off the adhering starch gelatinization, lees, or saccharification liquid, allowing it to return to the central area of ​​the tank 1 for mixing. This prevents materials from accumulating on the wall and forming dead corners, inhibits the growth of miscellaneous bacteria on the wall, and prevents the flavor substances of the rice wine from being interfered with by the metabolic products of miscellaneous bacteria. At the same time, when the rotating shaft 10 rotates forward, the spiral blades 20 lift the material in the discharge pipe 21 upward and recirculate it to the upper part of the tank 1 to mix with fresh raw materials and saccharifying agents. This prevents raw materials from accumulating in the discharge pipe 21 or at the bottom of the tank, ensuring full coverage of the saccharification reaction, enhancing material flowability, accelerating starch gelatinization and the hydrolysis of saccharifying enzymes, and shortening the saccharification time. After fermentation, the valve 24 is opened, and the fermentation is completed. When the rotating shaft 10 reverses, the rotating spiral blades 20 generate axial thrust, pushing the lees in the discharge pipe 21 downwards to form a controllable continuous discharge flow. This avoids the clogging problem caused by high material viscosity and particle accumulation in traditional static discharge ports. The filter screen 22 on the threaded pipe 23 allows the wine to pass through while intercepting the lees, achieving solid-liquid separation during the discharge process. This reduces the load on subsequent pressing or filtration processes, prevents lees from mixing with the wine and affecting the clarity of the finished product, and improves the quality of the rice wine. The threaded pipe 23 is connected to the discharge pipe 21 by threads, allowing for quick disassembly and assembly. After fermentation, the threaded pipe 23 can be directly removed to perform high-pressure rinsing or steam sterilization of the filter screen 22 and the inner wall of the threaded pipe 23 to avoid cross-contamination. At the same time, replacing the filter screen 22 with different pore sizes or adjusting the separation precision for different raw materials only requires replacing the threaded pipe 23.

[0047] By opening the sealing interface 4 and the sealing plate 5, personnel can enter the tank to inspect, clean, or install internal components, facilitating operation.

[0048] The advantages of this application are:

[0049] By starting the motor 9, the rotating shaft 10 drives the connecting plate 16 to rotate through the first connecting rod 8 and the second connecting rod 25, so that the two scrapers 15 scrape the inner wall of the tank 1, peel off the adhering starch gelatinized material, lees or saccharified liquid, and return it to the central area of ​​the tank 1 to participate in the mixing, so as to avoid the material from accumulating on the wall and forming dead corners, inhibit the reproduction of miscellaneous bacteria on the wall, and prevent the flavor substances of rice wine from being interfered with by the metabolic products of miscellaneous bacteria.

[0050] By setting the spiral blades 20, when the shaft 10 rotates forward, the spiral blades 20 lift the material in the discharge pipe 21 upward and recirculate it to the upper part of the tank 1 to mix with fresh raw materials and saccharifying agents. This avoids the accumulation of raw materials in the discharge pipe 21 or at the bottom of the tank, ensures full coverage of the saccharification reaction, enhances the fluidity of the material, accelerates the gelatinization of starch and the hydrolysis of saccharifying enzymes, and shortens the saccharification time. After fermentation, the shaft 10 is driven to rotate in reverse. When the spiral blades 20 rotate, they generate axial thrust, pushing the lees in the discharge pipe 21 downward to form a controllable continuous discharge flow. This avoids the clogging problem caused by high material viscosity and particle accumulation in traditional static discharge ports.

[0051] By setting up a threaded tube 23 and a filter screen 22, the filter screen 22 on the threaded tube 23 allows the wine to pass through while intercepting the lees, achieving solid-liquid separation during the discharge process. This reduces the load on subsequent pressing or filtration processes, prevents lees from mixing into the wine and affecting the clarity of the finished product, and improves the quality of the rice wine. The threaded tube 23 is connected to the discharge pipe 21 by threads, allowing for quick disassembly and assembly. After fermentation, the threaded tube 23 can be directly removed to perform high-pressure rinsing or steam sterilization of the filter screen 22 and the inner wall of the threaded tube 23, avoiding cross-contamination. At the same time, replacing the filter screen 22 with a different pore size or adjusting the separation precision for different raw materials only requires replacing the threaded tube 23.

[0052] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A saccharification and fermentation tank for brewing rice wine, including a base (18), characterized in that: A tank (1) is fixedly installed on the base (18). A top plate (12) is provided on the tank (1). A motor (9) is fixedly installed on the top plate (12). The output shaft of the motor (9) passes through the top plate (12) and is fixedly installed with a rotating shaft (10). Multiple stirring blades (3) are provided on the rotating shaft (10) at equal intervals. Two connecting plates (16) are provided inside the tank (1). A scraper (15) is fixedly installed on one side of each of the two connecting plates (16). A first connecting rod (8) and a second connecting rod (25) are fixedly installed on one side of each of the two connecting plates (16). One end of each of the two first connecting rods (8) and the two second connecting rods (25) is fixedly installed to the same rotating shaft (10). The bottom end of the tank (1) is connected to a discharge pipe (21). One end of the rotating shaft (10) extends into the interior of the discharge pipe (21). A spiral blade (20) is provided on the rotating shaft (10) at the position of the discharge pipe (21).

2. The saccharification and fermentation tank for rice wine brewing according to claim 1, characterized in that: The tank (1) is wound with a spiral coil (17), and a drain valve is provided at one end of the coil (17).

3. The saccharification and fermentation tank for rice wine brewing according to claim 2, characterized in that: The coil (17) is surrounded by an insulation layer (2), which is fixedly connected to the tank (1).

4. The saccharification and fermentation tank for rice wine brewing according to claim 1, characterized in that: A valve (24) is provided on the discharge pipe (21).

5. The saccharification and fermentation tank for rice wine brewing according to claim 4, characterized in that: The discharge pipe (21) is threadedly connected to a threaded pipe (23), and a filter screen (22) is provided on the threaded pipe (23).

6. The saccharification and fermentation tank for rice wine brewing according to claim 1, characterized in that: A sealing plate (5) is provided on the top plate (12), and a sealing interface (4) is provided on the tank body (1). The top plate (12) and the tank body (1) are fixed to the sealing interface (4) by the sealing plate (5).

7. The saccharification and fermentation tank for rice wine brewing according to claim 1, characterized in that: The top plate (12) is provided with a feed pipe (7), and the feed pipe (7) is provided with a flange cover (6).

8. The saccharification and fermentation tank for rice wine brewing according to claim 1, characterized in that: An exhaust pipe (13) is fixedly installed on the top plate (12), and a pressure balancing valve (14) is provided on the exhaust pipe (13).

9. The saccharification and fermentation tank for brewing rice wine according to claim 1, characterized in that: A sight glass (11) is fixedly installed on the top plate (12).

10. The saccharification and fermentation tank for rice wine brewing according to claim 1, characterized in that: The base (18) is fixedly installed with three legs (19) at its bottom end.

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