Single-layer stacking fermentation system

Abstract

The utility model discloses a single-layer stacking fermentation system, which is characterized in that a discharge port of each yeast powder bin is respectively provided with a screw feeder, an outlet of each screw feeder is connected with an inlet of a yeast powder mixer, an outlet of the yeast powder mixer is connected with a feed port of an inoculation mixer, an outlet of a material articulated chute is also connected with the feed port of the inoculation mixer, and the material articulated chute is connected with the inoculation mixer. An outlet of the inoculation mixing machine is connected with a feeding port of the single-layer stacking disc fermentation machine through a conveying mechanism, a rotary material bed is arranged in the single-layer stacking disc fermentation machine, and a radial auger capable of ascending and descending is arranged above the rotary material bed. A discharge port of the single-layer stacking disc fermentation machine is connected with a feed port of the grain spreading machine, a spread grain conveying mesh belt is arranged in an inner cavity of the grain spreading machine, and a cooling air chamber is arranged below the spread grain conveying mesh belt. According to the system, the occupied area is greatly reduced, the labor cost is reduced, the productivity is improved, the workshop environment is improved, and the quality and consistency of products are improved.

Description

Technical Field

[0001] The utility model relates to a fermentation system, in particular to a single-layer stacked fermentation system, belonging to the technical field of solid-state fermentation equipment, and is used for the production of Maotai-flavor Baijiu (Chinese liquor). Background Technique

[0002] The brewing of Baijiu has a long history in China, and some traditional and effective brewing processes have been formed during the long-term production practice. Stacked fermentation is an indispensable typical process in the production of Maotai-flavor Baijiu, and it mainly has three purposes:

[0003] 1. Collecting microorganisms: This is the most fundamental purpose of stacked fermentation. By exposing the cooked grain and fermented grains to the open environment of the workshop, the originally moist and warm grain and fermented grains will naturally adsorb thermophilic microorganisms, some molds and bacteria in the air, and make them attach to their surfaces and reproduce. After the grain and fermented grains full of bacteria are further fermented in the cellar, it will significantly drive the "aroma generation and saccharification".

[0004] 2. Saccharification and fermentation: This is an important stage process of stacked fermentation. The purpose of the whole stage is to saccharify and decompose the starch in the grain and fermented grains through the koji and the microorganisms collected by spreading the grains, and then make the fermentation process more perfect through the residues left by the production, reproduction and even death of the microorganisms.

[0005] 3. Aroma generation: This is an important result of stacked fermentation. The purpose is to polymerize the products of stacked fermentation to improve the flavor and liquor yield of Maotai-flavor Baijiu. Polymers such as "ethyl acetate, ethyl caproate, ethyl lactate" are the products after aroma generation. They can not only make the liquor body more mellow, sweet and soft, but also increase the drinking taste at different stages, making the taste of new liquor more Maotai-like and aged.

[0006] With the development of Baijiu fermentation technology, some Luzhou-flavor Baijiu also adopt the process of adding stacked fermentation before fermentation in the fermentation pit. For example, the Chinese invention patent application with the publication number of CN 117721177A proposes a method for stacking and fermenting fermented grains of Maotai-flavor distiller's grains. The method includes stacking the fermented grains into a conical fermented grain pile approximately in the shape of a hemisphere after steaming and mixing with koji. When piling up, the fermented grains are gradually sprinkled from the inside to the outside and from the bottom to the top. The first turning pile is carried out after stacking for 47 - 72h and when the top temperature of the pile reaches 35°C. By turning the pile, the problem of uneven temperature rise inside the stacked fermented grains is solved, the temperature rise uniformity is improved. At the same time, by controlling the shape and size parameters of the fermented grain pile, the liquor yield is increased, and the total acid, total ester, tetramethylpyrazine content, etc. of the liquor quality are also improved to a certain extent.

[0007] The following problems exist in this technical solution and the prior art: 1. When inoculating high-temperature koji powder, medium-temperature koji powder, and low-temperature koji powder and mixing them with the cooked materials, manual weighing with a platform scale is used for addition, and then manual mixing is carried out; this method has a high labor intensity for workers, and the addition ratio is prone to errors (manual operation has a large workload and many varieties, and it is easy to miss adding or add repeatedly).

[0008] 2. During the manual operation process, manual temperature measurement, humidity measurement, and material turning are required, with a high labor intensity. Workers are prone to fatigue when working in a high-temperature and high-humidity working environment, and the operation is prone to errors.

[0009] 3. Since the traditional stacked fermentation materials are stacked in the fermentation workshop and the work is carried out in an open area, a large amount of water vapor is generated by the materials, and the workshop is filled with smoke, polluting the workshop environment. Summary of the Invention

[0010] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract of the specification and the title of the utility model of this application, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0011] In view of the above and / or problems existing in the prior art, the present invention is proposed.

[0012] The purpose of the present invention is to overcome the problems existing in the prior art and provide a single-layer stacked fermentation system, which can realize the mechanization and standardization of the brewing operation process, greatly reduce the floor area, is beneficial to reducing the labor cost, improving the production capacity, improving the workshop production environment, and improving the quality and consistency of products.

[0013] To solve the above technical problems, a single-layer stacked fermentation system of the present invention includes koji powder silos. Spiral feeders are respectively provided at the discharge ports of each koji powder silo. The outlets of each spiral feeder are all connected to the inlet of a koji powder mixer. The outlet of the koji powder mixer is connected to the feed inlet of an inoculation mixer. The outlet of a material chute is also connected to the feed inlet of the inoculation mixer. The outlet of the inoculation mixer is connected to the feed inlet of a single-layer stacked disc fermenter through a conveying mechanism. A rotating material bed is provided in the single-layer stacked disc fermenter, and a radial auger capable of lifting is provided above the rotating material bed; the discharge port of the single-layer stacked disc fermenter is connected to the feed inlet of a grain spreading machine. A grain spreading conveyor belt is provided in the inner cavity of the grain spreading machine, and a cooling air chamber is provided below the grain spreading conveyor belt.

[0014] Further, the koji powder silos include a high-temperature koji powder silo, a medium-temperature koji powder silo, and a low-temperature koji powder silo. The rotation speeds of the spiral feeders of each koji powder silo are controlled by the material flow rate of the material chute, and the material chute is a cooked material chute.

[0015] Further, an air inlet of the fermenter is provided on the lower side wall of the rotary stock bed, and an air outlet of the fermenter is provided on the upper side wall of the stock layer. The outlet of the fresh air pipe is connected to the first inlet of the switching valve. The first outlet of the switching valve is connected to the air inlet of the hot water heater. The air outlet of the hot water heater is connected to the inlet of the air blower. The outlet of the air blower is connected to the air inlet of the fermenter. The air outlet of the fermenter is connected to the second inlet of the switching valve, and the second outlet of the switching valve is connected to the scrubbing tower.

[0016] Further, a humidifier is provided between the air outlet of the hot water heater and the inlet of the air blower. An air atomizing nozzle is provided in the humidifier. The water inlet of the air atomizing nozzle is connected to a clean water pipe, and the compressed air inlet of the air atomizing nozzle is connected to a compressed air pipe.

[0017] Further, the humidifier is also provided with a steam inlet and is connected to a steam pipe.

[0018] Further, hot water coils are respectively laid on the top cover and the side wall of the single-layer stacked disc fermenter.

[0019] Further, a material turning mechanism capable of lifting is respectively provided corresponding to each stock layer. The material turning mechanism includes a plurality of material turning augers extending vertically, and each material turning auger is arranged radially along the rotary stock bed.

[0020] Further, the head end of the grain spreading conveyor belt is located below the feed inlet of the grain spreading machine, and the tail end of the grain spreading conveyor belt is located above the discharge outlet of the grain spreading machine. A plurality of grain breaking and leveling mechanisms for breaking and leveling the material are provided above the upper layer of the grain spreading conveyor belt. A plurality of cooling fans are installed along the length direction on the outer wall of the cooling air chamber, and the outlets of each cooling fan are respectively communicated with the inner cavity of the cooling air chamber. A water cooling device is installed at the air inlet of the cooling fan near the discharge end.

[0021] Further, the top tail gas outlet of the grain spreading machine and the air outlet of the single-layer stacked disc fermenter are respectively connected to the air inlet of the scrubbing tower.

[0022] Further, the koji powder bin includes a high-temperature koji powder bin and a compound koji powder bin. The rotation speed of the screw feeder of each koji powder bin is controlled by the material flow of the material chute, and the material chute is a compound distiller's grains chute after distillation.

[0023] Compared with the prior art, the utility model has achieved the following beneficial effects: 1. First, high-temperature koji, medium-temperature koji, and low-temperature koji powder are proportioned by controlling the rotation speed of the discharging machine, and then enter the spiral mixer for mixing. The mixed koji powder and the cooked material enter another spiral mixer for mixing. The addition mixing system realizes automatic operation, with accurate addition ratio, uniform mixing, high mixing uniformity, and low labor intensity of workers.

[0024] 2. The single-layer stacked disc fermenter is adopted to achieve automatic control of humidity and temperature, automatic feeding, discharging, and turning of materials, reducing labor intensity and ensuring stable fermentation quality.

[0025] 3. The automatically sealed single-layer stacked disc fermenter is used. The mist generated during the fermentation process is centrally discharged outdoors, and a scrubber is used to purify the tail gas, thus purifying the workshop environment.

[0026] 4. The automatic single-layer stacked disc fermenter is adopted. During air exchange, workshop air is used, enabling the fermented materials to be naturally inoculated with environmental microorganisms, enriching the microbial population, enhancing the aroma, fragrance varieties of the baijiu, and adding to the layering of the baijiu.

[0027] 5. The automatic double-layer fermentation disc is adopted, saving the floor area for moistening the sorghum, increasing the liquor yield per unit area, and reducing the consumption of ventilation air.

[0028] 6. While inoculating high-temperature koji powder, medium-temperature koji powder, and low-temperature koji powder, workshop air with various microorganisms is inhaled during the fermentation process, accelerating starch gelatinization and saccharification, and improving the fermentation efficiency. The products of polymerized stacking fermentation enhance the flavor and liquor yield of the Maotai-flavor baijiu. Polymers such as "ethyl acetate, ethyl hexanoate, and ethyl lactate" are the products after flavor formation. They not only endow the liquor body with the characteristics of mellow sweetness and softness but also enhance the drinking taste at different stages.

[0029] 7. It saves floor area and increases the liquor yield per unit area; it is conducive to the baijiu brewing industry to change the production mode, achieve large-scale production through mechanization and intelligentization, and meet the standardization and consistency requirements of the food industry standards. Description of the Drawings

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. The drawings are only for reference and explanation, and are not used to limit the present invention. Among them:

[0031] Figure 1 It is the flowchart of Embodiment 1 of the single-layer stacked fermentation system of the present invention;

[0032] Figure 2 It is the structural schematic diagram of the grain spreading machine in the present invention;

[0033] Figure 3 It is the flowchart of Embodiment 2 of the single-layer stacked fermentation system of the present invention;

[0034] In the figure: 1. High-temperature koji powder silo; 2. Medium-temperature koji powder silo; 3. Low-temperature koji powder silo; 4. Koji powder mixer; 5. Inoculation mixer; 6. Conveyor mechanism;

[0035] 7. Single-layer stacking disc fermenter; 7a. Rotary material bed; 7b. Radial auger; 7c. Auger lifting mechanism; 7d. Fermenter discharge port; 7e. Fermenter air inlet; 7f. Fermenter air outlet; 7g. Material turning mechanism;

[0036] 8. Blower;

[0037] 9. Grain spreading machine; 9a. Grain spreading machine feed inlet; 9b. Grain spreading conveyor mesh belt; 9c. Grain spreading machine discharge port; 9d. Cooling fan; 9e. Cooling air chamber; 9f. Grain spreading tail gas outlet; 9g. Scattering and leveling mechanism;

[0038] 10. Water cooling equipment; 11. Scrubber; 12. Composite koji powder silo; 13. Switching valve; 14. Hot water heater; 15. Humidifier;

[0039] G1. High-temperature koji powder chute; G2. Medium-temperature koji powder chute; G3. Low-temperature koji powder chute; G4. Chute for cooked materials; G5. Hot water supply pipe; G6. Hot water return pipe; G7. Fresh air pipe; G8. Exhaust air pipe; G9. High-pressure cleaning water pipe; G10. Sewage pipe; G11. Refrigerant water supply pipe; G12. Refrigerant water return pipe; G13. Clean water pipe; G14. Composite distiller's grains chute; G15. Mixed bran koji chute; G16. Compressed air pipe; G17. Steam pipe. Detailed implementation manners

[0040] In the following description of the present utility model, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating that the device must have a specific orientation.

[0041] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below with reference to specific drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. Embodiment

[0043] As Figure 1As shown in the figure, the single-layer stacking fermentation system of the present utility model includes a high-temperature koji powder bin 1, a medium-temperature koji powder bin 2, a low-temperature koji powder bin 3, a single-layer stacking disc fermenter 7, and a grain spreading machine 9. The outlet of the high-temperature koji powder chute pipe G1 is connected to the inlet of the high-temperature koji powder bin 1, the outlet of the medium-temperature koji powder chute pipe G2 is connected to the inlet of the medium-temperature koji powder bin 2, and the outlet of the low-temperature koji powder chute pipe G3 is connected to the inlet of the low-temperature koji powder bin 3.

[0044] Screw feeders are respectively provided at the discharge ports of the high-temperature koji powder bin 1, the medium-temperature koji powder bin 2, and the low-temperature koji powder bin 3. The outlets of each screw feeder are all connected to the inlet of the koji powder mixer 4. The outlet of the koji powder mixer 4 is connected to the feed inlet of the inoculation mixer 5. The outlet of the cooked material chute pipe G4 is also connected to the feed inlet of the inoculation mixer 5. The rotation speeds of each screw feeder are controlled by the material flow rate of the cooked material chute pipe G4, so that the koji powder and the cooked material are added proportionally.

[0045] The discharge port of the inoculation mixer 5 is connected to the inlet of the conveying mechanism 6. The conveying mechanism 6 can be a belt conveyor set. The outlet of the conveying mechanism 6 is connected to the feed inlet of the single-layer stacking disc fermenter 7. A rotating material bed 7a is provided in the single-layer stacking disc fermenter 7. Above the rotating material bed 7a, a radial auger 7b is provided, and the radial auger 7b can be lifted and lowered under the drive of the auger lifting mechanism 7c. The discharge port of the single-layer stacking disc fermenter 7 is connected to the feed inlet of the grain spreading machine 9.

[0046] An air inlet 7e of the fermenter is provided on the lower side wall of the rotating material bed 7a, and an air outlet 7f of the fermenter is provided on the upper side wall of the material layer. The outlet of the fresh air pipe G7 is connected to the first inlet of the switching valve 13. The first outlet of the switching valve 13 is connected to the air inlet of the hot water heater 14. The air outlet of the hot water heater 14 is connected to the inlet of the air blower 8. The outlet of the air blower 8 is connected to the air inlet 7e of the fermenter; the air outlet 7f of the fermenter is connected to the second inlet of the switching valve 13 through the air outlet pipe G8, and the second outlet of the switching valve 13 is connected to the scrubbing tower.

[0047] When fresh air needs to be sent into the single-layer stacking disc fermenter 7 for aerobic fermentation, the switching valve 13 is switched to the first working condition, that is, the first inlet is connected to the first outlet, and the second inlet is connected to the second outlet. The air from the fermentation workshop enters the cold side of the hot water heater 14 and is indirectly heated by the hot water from the hot side, and then is sent by the air blower 8 to the lower part of the rotating material bed 7a and uniformly passes through the material layer upward, so that the inoculated cooked material undergoes aerobic fermentation. The air discharged from above enters the scrubbing tower 11 for scrubbing and cleaning and then is discharged into the air at high altitude.

[0048] When the single-layer stacked disc fermenter 7 performs facultative anaerobic fermentation, the switching valve 13 switches to the second working condition, that is, the first inlet is connected to the second outlet, the second inlet is connected to the first outlet, the upper air outlet of the single-layer stacked disc fermenter 7 returns to the cold side of the hot water heater 14, and is sent by the blower 8 to circulate under the rotating material bed 7a.

[0049] Heating coils are arranged in the ceiling and circumferential wall of the single-layer stacked disc fermenter 7. The inlet of the heating coil is connected to the hot water supply pipe G5, and the outlet of the heating coil is connected to the hot water return pipe G6.

[0050] A humidifier 15 is provided between the air outlet of the hot water heater 14 and the inlet of the blower 8. The humidifier 15 is provided with an air atomizing nozzle. The water inlet of the air atomizing nozzle is connected to the clear water pipe, and the compressed air inlet of the air atomizing nozzle is connected to the compressed air pipe G16. Compressed air and clear water enter the air atomizing nozzle and are sprayed out in a mist shape, which can adjust the air humidity entering the fermentation bed.

[0051] The humidifier 15 is also provided with a steam inlet and is connected to the steam pipe G17, and direct steam can be introduced into the fresh air for direct temperature and humidity adjustment.

[0052] Each material layer is respectively provided with a turning mechanism 7g that can be lifted and lowered. The turning mechanism 7g includes a plurality of turning augers extending vertically, and each turning auger is arranged radially along the rotating material bed 7a. When the turning auger is inserted into the material layer, turning is carried out, and after turning is completed, it rises to a high position.

[0053] Cleaning spray pipes are arranged above and below the rotating material bed 7a. The inlet of the cleaning spray pipe is connected to the high-pressure cleaning water pipe G9; a sewage discharge pipe G10 is provided at the bottom of the stacked disc fermenter, which is convenient for thoroughly cleaning the material bed when changing varieties.

[0054] The grain spreading tail gas outlet 9f at the top of the grain spreading machine 9 is connected to the air inlet of the scrubbing tower 11, and the air outlet 7f of the fermenter can also be connected to the air inlet of the scrubbing tower 11. Two packing layers are provided in the middle of the scrubbing tower 11. Spray pipes are respectively provided above the two packing layers. The tail gas enters the inner cavity of the scrubbing tower 11 from the lower scrubbing air inlet, flows upward through the packing layer from bottom to top, and the scrubbing water sprayed from the spray pipe flows downward to wash the tail gas. An anti-foaming layer is provided at the upper part of the scrubbing tower 11, and the defoamed tail gas is discharged from the top outlet.

[0055] The circulating water falling to the bottom of the scrubbing tower 11 is pumped out by the scrubbing circulation pump and sent to the upper spray pipe for circulating spraying. A clear water pipe G13 is connected to the middle and lower side wall of the scrubbing tower 11. When the concentration of the circulating water is too high, sewage discharge is carried out, and clear water is supplemented through the clear water pipe G13.

[0056] The air outlet 7f of the single-layer stacked disc fermenter 7 is also connected to the air inlet of the scrubbing tower 11 to wash the fermentation tail gas.

[0057] like Figure 2 As shown, the grain spreading machine 9 is horizontal, and its inner cavity is provided with a grain spreading conveying mesh belt 9b extending along the length direction of the grain spreading machine 9, the head end of the grain spreading conveying mesh belt 9b is located below the feed port 9a of the grain spreading machine, and the tail end of the grain spreading conveying mesh belt 9b is located above the discharge port 9c of the grain spreading machine.

[0058] A cooling air chamber is provided below the grain spreading conveyor mesh belt 9b, and a plurality of cooling fans 9d are installed on the outer wall of the cooling air chamber along the length direction, and the outlets of each cooling fan 9d are respectively connected to the inner cavity of the cooling air chamber; the grain spreading exhaust gas outlet 9f at the top of the grain spreading machine is connected to the air inlet of the washing tower 11.

[0059] A scattering and flattening mechanism 9g for scattering and flattening the material is arranged above the upper layer of the grain-spreading conveying mesh belt 9b, and a plurality of scattering and flattening mechanisms 9g are arranged along the length direction of the grain-spreading conveying mesh belt 9b.

[0060] The working process of this single-layer stacking fermentation system is as follows:

[0061] Inoculation: After cooking, the material is provided with a continuous and stable flow by the previous section, i.e., the cooking section. High-temperature koji powder, medium-temperature koji powder, and low-temperature koji powder enter the corresponding koji powder bins respectively. Each koji powder bin has a vibrating discharger and a screw feeder at its discharge port. When discharging, the three types of koji powder are set to the speed of each screw feeder in proportion, and are interlocked with the feeder speed of the cooking section to achieve proportional feeding, and then mixed evenly in the koji powder mixer 4. The evenly mixed koji powder and the cooking material enter the inoculation mixer 5 together for even mixing, completing the inoculation of the material.

[0062] Distribution: The inoculated material is conveyed into the single-layer stacking disc fermenter 7 by a belt conveyor unit and falls on the rotating material bed 7a. A radial auger 7b extending radially is provided above the rotating material bed 7a to help flatten the material. The rotating material bed 7a rotates around its own axis, and the two cooperate to complete uniform distribution of the material over the entire area of ​​the rotating material bed 7a, so as to form a highly consistent material layer on the rotating material bed 7a.

[0063] Fermentation: A hot water coil heating and heat preservation device is provided in the outer wall and ceiling of the single-layer stacked disc fermentation machine 7. Heating the ceiling can prevent condensation on the ceiling during the fermentation process, which affects the fermentation; heating the outer wall can heat the materials before the strain fermentation, thereby accelerating the fermentation speed of the strain. Before and during the feeding process, hot water is passed through the outer wall and ceiling of the single-layer stacked disc fermentation machine 7 to preheat the equipment and the fermentation materials and increase the temperature of the fermentation materials.

[0064] After the feeding is completed, the material enters the fermentation process. During the fermentation process, if the measured oxygen consumption in the fermenter is low, the fan can be turned on for ventilation.

[0065] When the measured temperature of the material is on the high side, the rotary material bed 7a can be rotated, and the material turning mechanism 7g can be lowered to the material turning position. Meanwhile, the fan is turned on for ventilation to cool the fermented material. Fresh air first passes through the lower material layer, then continues to pass through the upper material layer, and is discharged from the upper side wall. After the cooling is completed, the material turning mechanism 7g can be raised so that the material turning mechanism 7g is disengaged from the contact with the fermented material.

[0066] Discharging: After this stacking fermentation, the purpose of collecting microorganisms, saccharification fermentation and flavor enhancement can be achieved. After the fermentation is completed, the radial auger 7b is turned on, and the radial auger 7b is gradually lowered onto the rotary material bed 7a. At this time, the rotary material bed 7a is rotating, and the fermented material is conveyed by the radial auger 7b to the discharge port 7d of the fermenter and discharged from the single-layer stacking disc fermenter 7.

[0067] Spreading and cooling the grains: The fermented material enters from the feeding port 9a of the grain spreading machine, and lands on the feeding end of the grain spreading conveyor belt 9b. The grain spreading conveyor belt 9b not only carries the material and moves it towards the discharging end, but also makes the material form a uniformly spread material layer on the grain spreading conveyor belt 9b.

[0068] During this process, each cooling fan 9d sends cooling air into the cooling air chamber below the grain spreading machine 9, and passes upward through the spread material, so that the material is quickly cooled. The cooling tail gas is discharged from the grain spreading tail gas outlet 9f at the top of the grain spreading machine 9, enters the scrubbing tower 11 for scrubbing, and is then discharged into the high altitude through the exhaust fan.

[0069] The feeding end of the grain spreading machine 9 is cooled by the workshop air, and the discharging end is cooled by the air whose temperature has been cooled by the water cooling equipment 10. The refrigerant water at about 10°C enters the cold side of the air-water heat exchanger 10 through the refrigerant water supply pipe G11, is cooled to about 20°C by the air, and then cools the material about to be discharged. The heated refrigerant water flows back to the refrigerant water system for circulation through the refrigerant water return pipe G12.

[0070] The cooled material falls from the end of the grain spreading conveyor belt 9b, is discharged through the discharging port 9c of the grain spreading machine, and is conveyed backward by the conveying equipment to the next process. Embodiment

[0071] As Figure 3As shown in the figure, the single-layer stacking fermentation system of the present utility model includes a high-temperature koji powder bin 1 and a composite koji powder bin 12. The outlet of the high-temperature koji powder chute pipe G1 is connected to the inlet of the high-temperature koji powder bin 1, and the inlet of the composite koji powder bin 12 is connected to the outlet of the mixed bran koji chute pipe G15. The discharge ports of the high-temperature koji powder bin 1 and the composite koji powder bin 12 are respectively provided with screw feeders. The outlets of each screw feeder are all connected to the inlet of the koji powder mixer 4. The outlet of the koji powder mixer 4 is connected to the feed inlet of the inoculation mixer 5. The outlet of the composite distillers' grains chute pipe G14 after distillation is also connected to the feed inlet of the inoculation mixer 5. The composite distillers' grains after distillation are uniformly mixed by distillers' grains and glutinous rice. The rotation speeds of each screw feeder are controlled by the material flow of the composite distillers' grains chute pipe G14 after distillation, so that the koji powder and the composite distillers' grains after distillation are added in proportion. The rest of the stacking fermentation process is the same as that in Embodiment 1.

[0072] The above are only the preferred and feasible embodiments of the present utility model, which show and describe the basic principles, main features and advantages of the present utility model. The patent protection scope of the present utility model is not limited thereby. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. Except for the above embodiments, without departing from the spirit and scope of the present utility model, the present utility model can also have other implementation manners. The present utility model will also have various changes and improvements. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present utility model. The protection scope required by the present utility model is defined by the appended claims and their equivalents. The technical features not described in the present utility model can be realized by or adopted the existing technologies, and will not be elaborated here.

Claims

1. A single-layer stacking fermentation system, comprising a koji powder bin, characterized in that: The discharge port of each koji powder bin is respectively provided with a screw feeder, and the outlet of each screw feeder is connected to the inlet of the koji powder mixer, the outlet of the koji powder mixer is connected to the feed port of the inoculation mixer, and the outlet of the material chute is also connected to the feed port of the inoculation mixer, and the outlet of the inoculation mixer is connected to the feed port of the single-layer stacked disc fermenter through a conveying mechanism, and the single-layer stacked disc fermenter is provided with a rotating material bed, and a radial auger that can be raised and lowered is provided above the rotating material bed; the discharge port of the single-layer stacked disc fermenter is connected to the feed port of the grain spreading machine, and the inner cavity of the grain spreading machine is provided with a grain spreading conveying mesh belt, and a cooling air chamber is provided below the grain spreading conveying mesh belt.

2. The single-layer stacking fermentation system according to claim 1, characterized in that: The koji powder bins include a high-temperature koji powder bin, a medium-temperature koji powder bin and a low-temperature koji powder bin. The speed of the screw feeder of each koji powder bin is controlled by the material flow rate of the material chute, and the material chute is a post-cooking material chute.

3. The single-layer stacking fermentation system according to claim 1, characterized in that: The lower side wall of the rotating material bed is provided with an air inlet for the fermentation machine, the upper side wall of the material layer is provided with an air outlet for the fermentation machine, the outlet of the fresh air duct is connected to the first inlet of the switching valve, the first outlet of the switching valve is connected to the air inlet of the hot water heater, the air outlet of the hot water heater is connected to the inlet of the blower, and the outlet of the blower is connected to the air inlet of the fermentation machine; the air outlet of the fermentation machine is connected to the second inlet of the switching valve, and the second outlet of the switching valve is connected to the washing tower.

4. The single-layer stacking fermentation system according to claim 3, characterized in that: A humidifier is provided between the air outlet of the hot water heater and the inlet of the blower. The humidifier is provided with an air atomizing nozzle. The water inlet of the air atomizing nozzle is connected to a clean water pipe, and the compressed air inlet of the air atomizing nozzle is connected to a compressed air pipe.

5. The single-layer stacking fermentation system according to claim 4, characterized in that: The humidifier is also provided with a steam inlet and is connected to the steam pipe.

6. The single-layer stacking fermentation system according to claim 1, characterized in that: The top cover and side walls of the single-layer stacked disc fermenter are respectively provided with hot water coils.

7. The single-layer stacking fermentation system according to claim 1, characterized in that: Each material layer is respectively provided with a lifting and lowering material turning mechanism, and the material turning mechanism comprises a plurality of material turning augers extending in the vertical direction, and each material turning augers is arranged in the radial direction of the rotating material bed.

8. The single-layer stacking fermentation system according to claim 1, characterized in that: The head end of the grain spreading conveyor mesh belt is located below the feed port of the grain spreading machine, and the tail end of the grain spreading conveyor mesh belt is located above the discharge port of the grain spreading machine; a plurality of scattering and flattening mechanisms for scattering and flattening the materials are arranged above the upper layer of the grain spreading conveyor mesh belt; a plurality of cooling fans are installed along the length direction of the outer wall of the cooling air chamber, and the outlets of each cooling fan are respectively connected to the inner cavity of the cooling air chamber; a water cooling device is installed at the air inlet of the cooling fan near the discharge end.

9. The single-layer stacking fermentation system according to claim 8, characterized in that: The top tail gas outlet of the grain spreading machine and the air outlet of the single-layer stacked disc fermentation machine are respectively connected to the air inlet of the washing tower.

10. The single-layer stacking fermentation system according to claim 1, characterized in that: The koji powder bin includes a high-temperature koji powder bin and a composite koji powder bin. The speed of the screw feeder of each koji powder bin is controlled by the material flow rate of the material chute, and the material chute is a composite distiller's grains chute after distillation.

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