Continuous cooking system

Abstract

The utility model discloses a continuous cooking system, which is characterized in that an outlet of a surge bin is connected with a feed valve of a moistening and mixing machine, a moistening and mixing discharge port is connected with a feed port of a preheating and mixing machine, a discharge port of the preheating and mixing machine is connected with a feed port of a continuous cooking machine, and a discharge port of the continuous cooking machine is connected with a feed port of a grain spreading machine; an outlet of the grain spreading machine is connected with the cooked material conveying equipment; a cooking feeding valve is installed above a feeding port of the horizontal continuous cooking machine, a cooking discharging valve is installed below a discharging port of the horizontal continuous cooking machine, an annular cooking conveying chain is arranged in an inner cavity, the head end of the annular cooking conveying chain is located below the feeding port of the cooking machine, and the tail end of the annular cooking conveying chain is located above the discharging port of the cooking machine. Cooking steam injection pipes extending in the length direction of an inner cavity are arranged at the top and the bottom of the inner cavity of the continuous cooking machine respectively, and nozzles are evenly arranged in the length direction of the cooking steam injection pipes. The system avoids nutrition loss, greatly reduces the occupied area, improves the productivity, improves the workshop environment and improves the product consistency.

Description

Technical Field

[0001] The utility model relates to a fermentation system, in particular to a continuous cooking system, belonging to the technical field of solid-state fermentation equipment, and is a process before bran koji making and stacking fermentation in the liquor production process. Background Art

[0002] In the process of liquor production, raw material steaming is also called grain steaming. It is the operation of steaming the moistened grain raw materials such as sorghum in a steamer. It is one of the most critical process technologies. The traditional Daqu sauce-flavor liquor production process requires that the grain must be steamed after moistening and before mixing with the koji and drying. The traditional grain steaming process mainly includes the following steps:

[0003] 1. Moistening the grain: Before steaming, the sorghum needs to be soaked in nearly boiling hot water. This process requires extremely precise control of the amount of water and temperature to ensure that the sorghum can fully absorb water and expand. The moistening process is divided into several rounds, with a certain time interval between each round to ensure that the sorghum can evenly absorb water.

[0004] 2. Steaming: After the grain is moistened, the sorghum is steamed in a steamer. During the steaming process, the starch granules of the sorghum will absorb water, swell, rupture, and gelatinize, which is conducive to the hydrolysis of starch and glycogen in the raw materials by amylase. At the same time, before the grain is steamed, some bacteria attached to the surface of the grain will directly participate in the fermentation, which will make the wine have a foreign taste. High-temperature steaming also plays a role in sterilizing and deodorizing some raw and auxiliary materials, eliminating some volatile undesirable ingredients to ensure the quality of the liquor. There are strict requirements for the steaming time and steam pressure to ensure that the sorghum can reach the best gelatinization state;

[0005] In addition, high-temperature steaming can enhance the aroma. The grain aroma we taste during wine tasting is actually brought into the wine after the grain is steamed. The grain steaming process of sauce wine is a crucial link in the brewing of sauce wine, which is directly related to the overall quality and flavor of sauce wine.

[0006] 3. Sealing the upper steamer cover: During the steaming process, the steam pressure of the steamed grain needs to be controlled. When the steaming time reaches the specified requirements, the steamer can be lowered. After the steaming is completed, cover the steamer cover, install and debug the steam pipe, and then add a certain amount of water to seal the connection between the steamer cover and the steam pipe, and between the steam pipe and the cooler, and check whether the steam pressure display value meets the distillation requirements.

[0007] The traditional grain steaming process has the following problems:

[0008] 1. When moistening the grain, sorghum needs to be soaked in hot water close to boiling water. During the soaking process, the nutrients of the grain are lost into the soaking water, and the wastewater pollutes the environment;

[0009] 2. Since the grain moistening process uses manual water addition and temperature control, it can only be controlled by experienced workers based on experience, and cannot be accurately controlled or automated;

[0010] 3. The traditional method of steaming grains is that sorghum grits, wheat grits, etc. are manually steamed in a steamer at low temperature (100°C). The steaming temperature is low and the steaming time is long. After the steaming is completed, the grains are manually discharged. The steaming time and steam volume are completely controlled by experience. Batch steaming, and the volume of the steaming steamer is small, the batch volume is small, the output is small, and continuous automatic operation cannot be performed. The production occupies a large area. The labor intensity is high and the quality of steamed grains is unstable.

[0011] 4. The traditional grain spreading process is to spread the material on the ground with simple tools and let it cool naturally. It takes a long time to cool, occupies a large area and has high labor intensity.

[0012] The Chinese invention patent application with publication number CN 115466654A discloses a multi-grain liquor brewing equipment, which includes a steamer body and a steamer cover arranged on the steamer body, the steamer body is provided with a rotating column, the rotating column is rotatably arranged in the grain storage chamber, the rotating column is provided with a plurality of stirring blades along the length direction of the rotating column, and the steamer body is provided with a rotating assembly for driving the rotating column to rotate. A multi-grain liquor brewing method is also disclosed, including the following steps: S1, preparing materials; S2, steaming corn, stirring with stirring blades at the same time; S3, steaming highland barley; S4, steaming black bitter buckwheat and rice; S5, steaming oats, stewing grain; S6, steaming grain; S7, cooling, adding koji for saccharification, fermentation, and obtaining raw liquor. This technical solution solves the problem of automatically and continuously stirring steamed grain and improving the uniformity of steamed grain, but does not solve the problem of long time for low-temperature steaming grain (100°C), manual operation of grain loading, unloading, and batch steaming. Utility Model Content

[0013] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification of this application and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0014] In view of the above problems and / or the problems existing in the prior art, the present utility model is proposed.

[0015] The purpose of the utility model is to overcome the problems existing in the prior art and provide a continuous cooking system to prevent the loss of nutrition of grains during the soaking process, realize the mechanization and standardization of the brewing operation process, greatly reduce the floor space, and help reduce labor costs, increase production capacity, improve the workshop production environment, and improve product quality and consistency.

[0016] In order to solve the above technical problems, the utility model provides a continuous cooking system, including a buffer bin, the outlet of the buffer bin is connected to the feeding valve of a water-wetting mixer, the discharge port of the water-wetting mixer is connected to the feed port of a preheating mixer, the discharge port of the preheating mixer is connected to the feed port of a continuous cooking machine, the discharge port of the continuous cooking machine is connected to the feed port of a grain spreading machine, and the outlet of the grain spreading machine is connected to a cooking material conveying device;

[0017] The continuous cooking machine is horizontal, with a cooking feeding valve installed above its feed port and a cooking discharge valve installed below its discharge port. The inner cavity of the continuous cooking machine is provided with an annular cooking conveying chain, the head end of the annular cooking conveying chain is located below the feed port of the cooking machine, and the tail end of the annular cooking conveying chain is located above the discharge port of the cooking machine; the top and bottom of the inner cavity of the continuous cooking machine are respectively provided with cooking steam injection pipes extending along the length direction of the inner cavity, and nozzles are evenly arranged along the length direction of the cooking steam injection pipes.

[0018] Furthermore, the inner cavity of the cooking feeding valve is provided with a rotating impeller, and the upper side wall of the cooking feeding valve is provided with a feeding valve exhaust port, the feeding valve exhaust port is located in the upward section of the rotating impeller and close to the feeding valve inlet, the outlet of the feeding valve exhaust port is connected to the upper part of the tail end of the preheating mixer through the exhaust steam return pipe, and the tail gas outlet of the feed end of the preheating mixer is connected to the air inlet of the washing tower.

[0019] Furthermore, the grain spreading machine is horizontal, and its inner cavity is provided with a grain spreading conveying mesh belt extending along the length direction of the grain spreading machine, the head end of the grain spreading conveying mesh belt is located below the feeding port of the grain spreading machine, and the tail end of the grain spreading conveying mesh belt is located above the feeding port of the grain spreading machine;

[0020] A cooling air chamber is provided below the grain spreading conveyor mesh belt, and a plurality of cooling fans are installed on the outer wall of the cooling air chamber along the length direction, and the outlets of each cooling fan are respectively connected to the inner cavity of the cooling air chamber; the top exhaust outlet of the grain spreading machine is connected to the air inlet of the washing tower.

[0021] Furthermore, a scattering and flattening mechanism for scattering and flattening the materials is provided above the upper layer of the grain conveying mesh belt.

[0022] Furthermore, the scattering and flattening mechanism is provided in multiple groups along the length direction of the grain spreading conveying mesh belt.

[0023] Furthermore, a cooling device is installed at the air inlet of the cooling fan near the discharge end.

[0024] Furthermore, a water-moistening mixing feeding valve is installed at the feed port of the water-moistening mixer, a water-moistening mixing auger is provided in the inner cavity of the water-moistening mixer along the length direction, and a hot water spray pipe extending along the length direction is provided at the top of the feed end of the water-moistening mixer.

[0025] Furthermore, a preheating mixing auger extending along the length direction is provided in the inner cavity of the preheating mixer, and a preheating steam injection pipe extending along the axial direction is provided at the top of the feed end of the preheating mixer.

[0026] Furthermore, the upper end outlet of the primary fermentation material elevator is connected to the inlet of the primary fermentation material bin, a primary fermentation material feeder is installed at the bottom outlet of the primary fermentation material bin, and the outlet of the primary fermentation material feeder is connected to the inlet of the material mixer;

[0027] The outlet of the compound cooked grains chute is connected to the inlet of the compound cooked grains bin, a compound cooked grains feeder is installed at the bottom outlet of the compound cooked grains bin, and the outlet of the compound cooked grains feeder is also connected to the inlet of the material mixer;

[0028] The rotation speed of the compound cooked grains feeder is controlled by the rotation speed of the primary fermentation material feeder. The outlet of the material mixer is connected to the lower end inlet of the mixed material elevator, and the upper end outlet of the mixed material elevator is connected to the inlet of the buffer bin.

[0029] Furthermore, the outlets of the peanut powder chute, the corn grits chute, and the corn flour chute are respectively connected to the inlets of the auxiliary material conveyor, and the outlet of the auxiliary material conveyor is connected to the inlet of the mixing conveyor; the outlet of the bran hopper is connected to the inlet of the mixing conveyor through a chute;

[0030] The outlet of the distiller's grains chute is connected to the inlet of the distiller's grains hopper, and the outlet of the distiller's grains hopper is also connected to the inlet of the mixing conveyor through a distiller's grains conveying mechanism;

[0031] The outlet of the mixing conveyor is connected to the lower end inlet of the koji-making raw material elevator, and the upper end outlet of the koji-making raw material elevator is connected to the inlet of the buffer bin.

[0032] Compared with the prior art, the present utility model has achieved the following beneficial effects: 1. This system adopts the process of automatic water addition, continuous moistening and mixing of grains, and abandons the soaking process. The water addition is accurate, the water absorption is fast, and the efficiency is high; the loss of grain nutrition is reduced, and environmental pollution is reduced; continuous automation reduces the labor intensity;

[0033] 2. This system adopts continuous, high-temperature, and high-pressure cooking, with a large output, uniform cooking quality, automated operation, a small floor area, and improved production efficiency;

[0034] 3. This system adopts a continuous automatic and forced ventilation process for spreading grains, with continuous cooling, a short cooling time, a small floor area, automated operation, and further reduction of labor intensity;

[0035] 4. Avoid the unorganized emission of tail gas. The tail gas is centrally discharged outdoors and purified by a scrubber, which purifies the working environment of the workshop;

[0036] 5. It is conducive to the liquor brewing industry to change the production mode. Through the realization of mechanization and intelligentization, large-scale production is achieved, meeting the standardization and consistency requirements of the food industry standards. Brief Description of the Drawings

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. The drawings are only provided for reference and explanation, and are not used to limit the present invention. Among them:

[0038] Figure 1 It is a flowchart of the first embodiment of the continuous cooking system of the present invention;

[0039] Figure 2 It is an enlarged view of the water-softening mixer of the present invention;

[0040] Figure 3 It is an enlarged view of the preheating mixer of the present invention;

[0041] Figure 4 It is an enlarged view of the continuous cooker of the present invention;

[0042] Figure 5 It is an enlarged view of the grain spreading machine of the present invention;

[0043] Figure 6 It is a flowchart of the second embodiment of the continuous cooking system of the present invention;

[0044] In the figure: 1. Primary fermentation material elevator; 2. Primary fermentation material bin; 3. Primary fermentation material feeder; 4. Composite cooked grains bin; 5. Composite cooked grains feeder; 6. Material mixer; 7. Mixed material elevator; 8. Buffer bin;

[0045] 9. Water-softening mixer; 9a. Water-softening mixing feed valve; 9b. Water-softening mixing feed inlet; 9c. Hot water spray pipe; 9d. Water-softening mixing auger; 9e. Water-softening mixing discharge outlet;

[0046] 10. Preheating mixer; 10a. Preheating mixing feed inlet; 10b. Preheating steam injection pipe; 10c. Preheating mixing auger; 10d. Preheating mixing discharge outlet;

[0047] 11. Continuous cooking machine; 11a. Cooking feed valve; 11a1. Exhaust port of the feed valve; 11b. Inlet of the cooking machine; 11c. Cooking steam injection pipe; 11d. Ring-shaped cooking conveyor chain; 11e. Outlet of the cooking machine; 11f. Cooking discharge valve;

[0048] 12. Grain spreading machine; 12a. Inlet of the grain spreading machine; 12b. Grain spreading conveyor belt; 12c. Outlet of the grain spreading machine; 12d. Cooling fan; 12e. Cooling air chamber; 12f. Exhaust outlet of the grain spreading machine; 12g. Scattering and leveling mechanism;

[0049] 13. Cooking material conveying equipment; 14. Hot water tank; 15. Cooling water tank; 16. Induced draft fan; 17. Scrubber; 18. Exhaust fan; 19. Air-water heat exchanger;

[0050] 20. Distillers' grains hopper; 21. Distillers' grains conveying mechanism; 22. Auxiliary material conveyor; 23. Bran hopper; 24. Mixing conveyor; 25. Starter material elevator;

[0051] Q1. Hot water flowmeter; B1. Hot water pump; B2. Cooling water pump; V1. Steam regulating valve;

[0052] G1. Primary fermentation material chute; G2. Composite cooked distillers' grains chute; G3. Steam pipe; G3a. Exhaust steam recycling pipe; G4. Grain moistening hot water pipe; G5. Clear water pipe; G6. Cooling water supply pipe; G7. Cooling water outlet pipe; G8. Refrigerant water supply pipe; G9. Refrigerant water return pipe; G10. Distillers' grains chute; G11. Peanut powder chute; G12. Corn grits chute; G13. Corn flour chute. Detailed implementation mode

[0053] In the following description of the present invention, 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 invention and simplifying the description, rather than indicating that the device must have a specific orientation.

[0054] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below with reference to specific drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0055] 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 invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. Embodiment

[0056] For continuous cooking of the primary fermentation materials, such as Figures 1 to 5 shown, the continuous cooking system of the present utility model includes a primary fermentation material elevator 1, a primary fermentation material bin 2, a primary fermentation material feeder 3, a composite cooked grains bin 4, a composite cooked grains feeder 5, a material mixer 6, a mixed material elevator 7, a buffer bin 8, a water moistening mixer 9, a preheating mixer 10, a continuous cooker 11, and a grain spreading machine 12.

[0057] The upper end outlet of the primary fermentation material elevator 1 is connected to the inlet of the primary fermentation material bin 2, the bottom outlet of the primary fermentation material bin 2 is equipped with a primary fermentation material feeder 3, and the outlet of the primary fermentation material feeder 3 is connected to the inlet of the material mixer 6; the outlet of the composite cooked grains chute is connected to the inlet of the composite cooked grains bin 4, the bottom outlet of the composite cooked grains bin 4 is equipped with a composite cooked grains feeder 5, and the outlet of the composite cooked grains feeder 5 is also connected to the inlet of the material mixer 6.

[0058] The rotation speed of the composite cooked grains feeder 5 is controlled by the rotation speed of the primary fermentation material feeder 3. The outlet of the material mixer 6 is connected to the lower end inlet of the mixed material elevator 7, and the upper end outlet of the mixed material elevator 7 is connected to the inlet of the buffer bin 8.

[0059] The outlet of the buffer bin 8 is connected to the feeding valve of the water moistening mixer 9. The discharge port of the water moistening mixer 9 is connected to the feeding port of the preheating mixer 10. The discharge port of the preheating mixer 10 is connected to the cooking machine feeding port 11b of the continuous cooker 11. The cooking machine discharge port 11e of the continuous cooker 11 is connected to the feeding port of the grain spreading machine 12, and the outlet of the grain spreading machine 12 is connected to the cooked material conveying device 13.

[0060] The continuous cooker 11 is horizontal. A cooking feeding valve 11a is installed above the cooking machine feeding port 11b, and a cooking discharge valve 11f is installed below the cooking machine discharge port 11e. The inner cavity of the continuous cooker 11 is provided with an annular cooking conveying chain 11d. The head end of the annular cooking conveying chain 11d is located below the cooking machine feeding port, and the tail end of the annular cooking conveying chain 11d is located above the cooking machine discharge port; steam injection pipes 11c extending along the length direction of the inner cavity are respectively provided at the top and bottom of the inner cavity of the continuous cooker 11, and nozzles are evenly arranged along the length direction of the steam injection pipes 11c.

[0061] The inner cavity of the cooking feeding valve 11a is provided with a rotating impeller, which rotates counterclockwise to transport the material downward along the left half of the inner cavity. Since the outlet of the cooking feeding valve 11a has a pressure of 0.2MPa and the top inlet has no pressure, a certain amount of steam will be entrained in the upward section of the right half of the rotating impeller. A feeding valve exhaust port 11a1 is provided on the upper side wall of the upward section of the rotating impeller and close to the feeding valve inlet. The feeding valve exhaust port 11a1 is connected to the upper part of the tail end of the preheating mixer 10 through the exhaust steam return pipe G3a, and the tail gas outlet of the feed end of the preheating mixer 10 is connected to the air inlet of the washing tower 17.

[0062] The grain spreading machine 12 is horizontal, and its inner cavity is provided with a grain spreading conveyor belt 12b extending along the length direction of the grain spreading machine 12, the head end of the grain spreading conveyor belt 12b is located below the grain spreading machine feed port 12a, and the tail end of the grain spreading conveyor belt 12b is located above the grain spreading machine discharge port 12c.

[0063] A cooling air chamber is provided under the grain spreading conveyor mesh belt 12b, and multiple cooling fans 12d are installed on the outer wall of the cooling air chamber along the length direction. The outlets of each cooling fan 12d are respectively connected to the inner cavity of the cooling air chamber; the grain spreading exhaust gas outlet 12f at the top of the grain spreading machine is connected to the air inlet of the washing tower 17.

[0064] A scattering and flattening mechanism 12g for scattering and flattening the material is provided above the upper layer of the grain-spreading conveying mesh belt 12b, and a plurality of scattering and flattening mechanisms 12g are provided along the length direction of the grain-spreading conveying mesh belt 12b.

[0065] The feed port of the water-wetting mixer 9 is equipped with a water-wetting mixing feeding valve, the inner cavity of the water-wetting mixer 9 is provided with a water-wetting mixing auger along the length direction, the top of the feed end of the water-wetting mixer 9 is provided with a hot water spray pipe extending along the length direction, and the inner cavity of the preheating mixer 10 is provided with a preheating mixing auger extending along the length direction.

[0066] The primary fermentation material after moistening and fermentation flows out from the primary fermentation material chute G1, is lifted to a high position by the primary fermentation material elevator 1, enters the primary fermentation material bin 2 for temporary storage, and then is sent to the material mixer 6 by the primary fermentation material feeder 3; the composite cooked dregs composed of distiller's grains and glutinous rice flows out from the composite cooked dregs chute G2, enters the composite cooked dregs bin 4 for temporary storage, and is also sent to the material mixer 6 by the composite cooked dregs feeder 5.

[0067] The rotation speed of the composite mature dregs feeder 5 is linked with the rotation speed of the primary fermentation material feeder 3 to ensure a stable addition ratio of the composite mature dregs.

[0068] Before steaming the grains, the primary fermentation materials such as sorghum need to be soaked in hot water close to boiling. This process requires extremely precise control of the water volume and temperature to ensure that the sorghum can fully absorb water and expand. The process of moistening the grains is divided into several rounds, with a certain time interval between each round to ensure that the sorghum can absorb water evenly. In this system, after the primary fermentation materials and the compound matured grains are evenly mixed by the material mixer 6, they are lifted to a high position by the mixed material elevator 7, enter the buffer bin 8 for temporary storage, and then enter the water moistening mixer 9 for grain moistening.

[0069] Steam from the steam pipe G3 and clear water from the clear water pipe G7 jointly enter the hot water tank 14 to make hot water at a set temperature. The bottom outlet of the hot water tank 14 is connected to the inlet of the hot water pump B1. The hot water sent out by the hot water pump B1 is sent into the hot water spray pipe at the feeding end of the water moistening mixer 9 through the grain moistening hot water pipe G4 and the hot water flowmeter Q1. The hot water spray pipe is located at the top of the feeding end of the water moistening mixer 9 and extends axially for a certain distance.

[0070] The flow rate of the hot water is precisely proportionally matched with the feeding flow rate of the water moistening and feeding valve. The rotation speed of the hot water pump B1 is controlled by the hot water flow rate measured by the hot water flowmeter Q1.

[0071] The materials are fed into the water moistening and feeding inlet by the water moistening and feeding valve, and while moving towards the discharging end under the push of the water moistening auger, they are evenly mixed with the hot water sprayed by the hot water spray pipe. After passing through the spraying section, they continue to move towards the discharging end while being stirred under the drive of the water moistening auger until they are discharged from the water moistening discharging outlet.

[0072] The grains after moistening enter the preheating mixer 10 from the preheating and mixing feeding inlet 10a. The preheating steam injection pipe 10b is located at the top of the feeding end of the preheating mixer 10 and extends axially for a certain distance. Steam from the steam pipe G3 enters the preheating steam injection pipe 10b through the steam regulating valve V1 to heat the materials. Under the drive of the preheating mixer auger 10c, while being stirred, they move towards the discharging end, raising the temperature of the materials to about 90°C until they are discharged from the preheating and mixing discharging outlet 10d.

[0073] The preheated material is fed into the continuous cooker 11 by the cooking feed valve 11a for high-temperature cooking. The continuous cooker 11 extends horizontally, with the feed end slightly higher than the discharge end. The cooking feed valve 11a serves the functions of feeding and airtightness. The material entering from the cooker feed inlet 11b falls on the feed end of the annular cooking conveyor chain 11d and is carried by the annular cooking conveyor chain 11d towards the discharge end. Cooking steam injection pipes 11c are respectively arranged above the material layer and below the return section of the annular cooking conveyor chain 11d. High-temperature steam at 133 °C and 0.2 MPa is introduced into the cooking steam injection pipes 11c, and is sprayed out from each nozzle to perform high-temperature and high-pressure cooking on the material, causing the starch granules of sorghum to absorb water, expand, rupture and gelatinize, which is beneficial for amylase to hydrolyze starch and glycogen in the raw material, sterilize, remove odors and enhance fragrance.

[0074] The cooking feed valve 11a realizes uniform feeding through a rotating impeller and also serves the function of airtightness. A small amount of steam overflowing from the upper end of the cooking feed valve 11a enters the upper part of the discharge end of the preheating mixer 10 through the waste steam reuse pipe G3a to realize waste heat utilization. The tail gas generated by the preheating mixer 10 is discharged from the feed end and is sent into the scrubber 17 by the induced draft fan 16 for washing and then discharged.

[0075] Make-up water is supplied to the cooling water tank 15 through the clean water pipe G5. After the cooling water pump B2 pumps out the cooling water, it is sent into the cooling water inlets of the cooking feed valve 11a and the cooking discharge valve 11f through the cooling water supply pipe G6 to indirectly cool parts such as their bearings and prevent the rotation blades from getting stuck due to high temperature. The heated cooling water is sent into the hot water tank 14 through the cooling water outlet pipe G7, recovering heat and serving as make-up water at the same time.

[0076] The cooked material falls from the discharge end of the annular cooking conveyor chain 11d, is discharged through the cooker discharge port 11e and the cooking discharge valve 11f, and enters the grain spreading machine 12 for automatic grain spreading and cooling.

[0077] The cooked material enters from the grain spreading machine feed inlet 12a and falls on the feed end of the grain spreading conveyor belt 12b. The grain spreading conveyor belt 12b not only carries the material towards the discharge end, but also forms a uniformly spread material layer of the material on the grain spreading conveyor belt 12b.

[0078] During this process, each cooling fan 12d sends cooling air into the cooling air chamber below the grain spreading machine 12, passing upwards through the spread material to quickly cool the material. The cooling tail gas is discharged from the grain spreading tail gas outlet 12f at the top of the grain spreading machine 12, enters the scrubber 17 for washing, and is discharged into the high altitude through the exhaust fan 18.

[0079] The feeding end of the grain spreading machine 12 is cooled by the workshop air, and the discharging end is cooled by the air whose temperature is cooled by the air-water heat exchanger 19. The refrigerant water at about 10 °C enters the cold side of the air-water heat exchanger 19 through the refrigerant water supply pipe G8, 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 G9.

[0080] The cooled material falls from the end of the grain spreading conveyor belt 12b, is discharged through the discharging port 12c of the grain spreading machine, and is conveyed backward by the cooked material conveying equipment 13. Embodiment

[0081] For continuous cooking in the process of making bran koji, as Figure 6 shown, the outlets of the peanut powder chute pipe G11, the corn grits chute pipe G12 and the corn flour chute pipe G13 are respectively connected to the inlets of the auxiliary material conveyor 22, and the outlet of the auxiliary material conveyor 22 is connected to the inlet of the mixing conveyor 24; the outlet of the bran hopper 23 is connected to the inlet of the mixing conveyor 24 through a chute;

[0082] The outlet of the distiller's grains chute pipe G10 is connected to the inlet of the distiller's grains hopper 20, and the outlet of the distiller's grains hopper 20 is also connected to the inlet of the mixing conveyor 24 through the distiller's grains conveying mechanism 21;

[0083] The outlet of the mixing conveyor 24 is connected to the lower end inlet of the koji-making raw material elevator 25, and the upper end outlet of the koji-making raw material elevator 25 is connected to the inlet of the buffer bin.

[0084] The distiller's grains, peanut powder, corn grits, corn flour and bran enter the mixing conveyor 24 in proportion, are mixed evenly, and are sent to the lower end of the koji-making raw material elevator 25. After being conveyed upward by the koji-making raw material elevator 25 and stored temporarily in the buffer bin 8, they enter the water-softening mixer 9 for grain moistening. The subsequent processes are the same as those in Embodiment 1.

[0085] The above is only the preferred and feasible embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention. The patent protection scope of the present invention is not limited thereby. Those skilled in the art should understand that the present invention is not limited by the above embodiments. Except for the above embodiments, without departing from the spirit and scope of the present invention, the present invention may have other implementation manners. The present invention 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 invention. The protection scope required by the present invention is defined by the appended claims and their equivalents. The technical features not described in the present invention can be realized by or adopted the existing technologies, and will not be elaborated herein.

Claims

1. A continuous cooking system, comprising a buffer bin, characterized in that: The outlet of the buffer bin is connected to the feeding valve of the water-wetting mixer, the outlet of the water-wetting mixer is connected to the feed port of the preheating mixer, the outlet of the preheating mixer is connected to the feed port of the continuous cooking machine, the outlet of the continuous cooking machine is connected to the feed port of the grain spreading machine, and the outlet of the grain spreading machine is connected to the cooking material conveying equipment; The continuous cooking machine is horizontal, with a cooking feeding valve installed above its feed port and a cooking discharge valve installed below its discharge port. The inner cavity of the continuous cooking machine is provided with an annular cooking conveying chain, the head end of the annular cooking conveying chain is located below the feed port of the cooking machine, and the tail end of the annular cooking conveying chain is located above the discharge port of the cooking machine; the top and bottom of the inner cavity of the continuous cooking machine are respectively provided with cooking steam injection pipes extending along the length direction of the inner cavity, and nozzles are evenly arranged along the length direction of the cooking steam injection pipes.

2. The continuous cooking system according to claim 1, characterized in that: The inner cavity of the cooking feeding valve is provided with a rotating impeller, and the upper side wall of the cooking feeding valve is provided with a feeding valve exhaust port, which is located in the upward section of the rotating impeller and close to the feeding valve inlet. The outlet of the feeding valve exhaust port is connected to the upper part of the tail end of the preheating mixer through the exhaust steam recycling pipe, and the tail gas outlet of the feed end of the preheating mixer is connected to the air inlet of the washing tower.

3. The continuous cooking system according to claim 1, characterized in that: The grain spreading machine is horizontal, and its inner cavity is provided with a grain spreading conveying mesh belt extending along the length direction of the grain spreading machine, the head end of the grain spreading conveying mesh belt is located below the feeding port of the grain spreading machine, and the tail end of the grain spreading conveying mesh belt is located above the discharging port of the grain spreading machine; A cooling air chamber is provided below the grain spreading conveyor mesh belt, and a plurality of cooling fans are installed on the outer wall of the cooling air chamber along the length direction, and the outlets of each cooling fan are respectively connected to the inner cavity of the cooling air chamber; the top exhaust outlet of the grain spreading machine is connected to the air inlet of the washing tower.

4. The continuous cooking system according to claim 3, characterized in that: A scattering and flattening mechanism for scattering and flattening the materials is arranged above the upper layer of the grain spreading conveying mesh belt.

5. The continuous cooking system according to claim 4, characterized in that: The scattering and flattening mechanisms are provided in multiple groups along the length direction of the grain spreading conveying mesh belt.

6. The continuous cooking system according to claim 3, characterized in that: A cooling device is installed at the air inlet of the cooling fan near the discharge end.

7. The continuous cooking system according to claim 1, characterized in that: The feed inlet of the water-moistening mixer is equipped with a water-moistening mixing feeding valve, the inner cavity of the water-moistening mixer is provided with a water-moistening mixing auger along the length direction, and the top of the feed end of the water-moistening mixer is provided with a hot water spray pipe extending along the length direction.

8. The continuous cooking system according to claim 1, characterized in that: The inner cavity of the preheating mixer is provided with a preheating mixing auger extending along the length direction, and the top of the feeding end of the preheating mixer is provided with a preheating steam injection pipe extending along the axial direction.

9. The continuous cooking system according to any one of claims 1 to 7, characterized in that: The upper end outlet of the primary fermentation material elevator is connected to the inlet of the primary fermentation material bin, and the bottom outlet of the primary fermentation material bin is equipped with a primary fermentation material feeder, and the outlet of the primary fermentation material feeder is connected to the inlet of the material mixer; The outlet of the composite mature dregs chute is connected to the inlet of the composite mature dregs bin, and a composite mature dregs feeder is installed at the bottom outlet of the composite mature dregs bin, and the outlet of the composite mature dregs feeder is also connected to the inlet of the material mixer; The rotation speed of the composite mature dregs feeder is controlled by the rotation speed of the primary fermentation material feeder, the outlet of the material mixer is connected to the lower inlet of the mixed material elevator, and the upper outlet of the mixed material elevator is connected to the inlet of the buffer bin.

10. The continuous cooking system according to any one of claims 1 to 7, characterized in that: The outlets of the peanut powder chute, corn grits chute and corn powder chute are respectively connected to the inlet of the auxiliary material conveyor, and the outlet of the auxiliary material conveyor is connected to the inlet of the mixing conveyor; the outlet of the bran hopper is connected to the inlet of the mixing conveyor through the chute; The outlet of the lees chute is connected to the inlet of the lees hopper, and the outlet of the lees hopper is also connected to the inlet of the mixing conveyor through the lees conveying mechanism; The outlet of the mixing conveyor is connected to the lower inlet of the koji-making raw material elevator, and the upper outlet of the koji-making raw material elevator is connected to the inlet of the buffer bin.

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