Solid fermentation system

Abstract

The present invention discloses a solid fermentation system, including a feeding device, a first conveying mechanism, a steam mixing device, a bacterial liquid inoculation device, a pipe chain conveyor, a material storage tank, a second conveying mechanism, and a drying device; the raw material is put into the feeding device, enters the first conveying mechanism, and is conveyed to the steam mixing device through the first conveying mechanism. The raw material after steam mixing enters the material storage tank through the pipe chain conveyor for high-temperature sterilization. The sterilized raw material is successively conveyed to the bacterial liquid inoculation device through the second conveying mechanism and the first conveying mechanism for inoculation. The inoculated raw material enters the material storage tank through the pipe chain conveyor for fermentation, and the fermented material enters the drying device for drying. The present invention is suitable for large-scale fermentation of solid raw materials such as rapeseed meal, soybean meal, and cottonseed meal, and the system has the functions of anaerobic fermentation and aerobic fermentation, the utilization rate of the equipment is high, the production cost is reduced, the production efficiency and economic benefits are improved, and the operation is simple.

Description

Technical Field

[0001] The present invention relates to the solid fermentation production industry, and in particular to a solid fermentation system suitable for large-scale (tens of tons to two hundred and fifty tons) fermentation of solid raw materials such as rapeseed meal, soybean meal, and cottonseed meal, and the system has the functions of anaerobic fermentation and aerobic fermentation of large-scale solid raw materials. Background Art

[0002] Solid fermentation refers to the production and reproduction of microorganisms on a solid surface with a certain temperature and humidity. Solid fermentation technology has a long history in the field of traditional fermentation because of its simplicity and low investment. For example, it is widely used in the production of bacterial fertilizer fermented feed, bacterial pesticides, and some traditional foods such as beverages, wine, soy sauce and vinegar. In particular, in recent years, the feed industry has been short of high-quality protein resources, and improving the quality of traditional protein resources has gradually become a focus. At present, research progress has been made in the production of bacterial protein feed by solid fermentation of potato residues; solid fermentation and detoxification of soybean meal, rapeseed cake, and cottonseed meal as feed; solid fermentation of straw to produce protein feed, etc., all of which have good development prospects.

[0003] The existing "pit fermentation" type of solid-state fermentation has the problem of difficult control of the fermentation process, limited pile height and poor stability.

[0004] The existing solid fermentation equipment for feed has a simple structure, a small processing capacity (no more than a few tons), and only has one of the functions of anaerobic fermentation or aerobic fermentation. It cannot meet the needs of anaerobic fermentation and aerobic fermentation at the same time, and different types of solid biological fermentation are not universal. Summary of the invention

[0005] In view of the above problems, the object of the present invention is to provide a solid fermentation system suitable for large-scale raw material fermentation, and the system has the functions of anaerobic fermentation and aerobic fermentation, and the raw materials requiring anaerobic fermentation and the raw materials requiring aerobic fermentation can be used interchangeably.

[0006] In order to achieve the above object, the technical solution of the present invention is as follows:

[0007] The present invention provides a solid fermentation system, characterized in that it comprises:

[0008] Feeding device, convenient for inputting raw materials;

[0009] A first conveying mechanism, used for conveying raw materials, wherein the outlet end of the feeding device is connected to the first conveying mechanism;

[0010] The steam mixing device is connected to the first conveying mechanism and is used to mix the raw material with the high-temperature steam. The steam mixing device comprises a shell, and the shell is provided with a raw material inlet, a raw material outlet and a steam inlet. The raw material inlet is connected to the first conveying mechanism, and the steam inlet is connected to an external steam supply device. The raw material outlet of the steam mixing device is connected to the pipe chain conveyor.

[0011] The bacterial liquid inoculation equipment is connected to the first conveying mechanism, the bacterial liquid inoculation equipment comprises a shell, the shell is provided with a raw material inlet, a raw material outlet and a bacterial liquid inlet, the bacterial liquid inlet is connected to an external bacterial liquid supply device; the raw material outlet of the bacterial liquid inoculation equipment is connected to a pipe chain conveyor;

[0012] Tube chain conveyor to transfer raw materials;

[0013] A material storage tank is provided with a first outlet with a control valve on the pipe chain conveyor, the material storage tank is communicated with the first outlet of the pipe chain conveyor, the material storage tank comprises a tank body, the tank body comprises a tank body inlet and a tank body outlet, and a temperature sensor for detecting the internal temperature is provided on the side wall of the tank body;

[0014] A second conveying mechanism is connected to the outlet of the material storage tank and to the first conveying mechanism, and is used to convey the material to the first conveying mechanism;

[0015] The drying equipment is provided with a second outlet with a control valve on the tube chain conveyor, and the inlet of the drying equipment is communicated with the second outlet of the tube chain conveyor.

[0016] In a preferred embodiment of the present invention, it also includes an air supply box, including a shell, on which a raw material inlet, a raw material outlet and an air outlet are provided. The raw material inlet is connected to the first conveying mechanism, and the air outlet is connected to an external blower; the raw material outlet of the air supply box is connected to the pipe chain conveyor.

[0017] In a preferred embodiment of the present invention, the steam mixing device, the bacterial liquid inoculation device and the air supply box share the same housing, the upper portion of the housing is provided with a raw material inlet, a steam inlet, a bacterial liquid inlet and an air outlet, and the bottom of the housing is provided with a raw material outlet. Furthermore, the lower portion of the housing is provided with a rotating shaft with spiral blades. Furthermore, a flow scale is connected to the raw material inlet of the housing.

[0018] In a preferred embodiment of the present invention, the first conveying mechanism is connected to the steam mixing device and the bacterial liquid inoculation device through two pipelines, and a cooler is provided on the pipeline connecting the first conveying mechanism and the steam mixing device. Further, the cooler includes a box body, the top of the box body is provided with an inlet, the bottom of the box body is provided with an outlet, a plurality of groups of vibration beds are provided in the box body, each group of vibration beds is connected end to end, the vibration bed includes an inclined vibration trough, and a vibration motor that drives the vibration trough to vibrate, a fan is provided at the bottom of the box body, and a pulse dust collector is provided at the top of the box body.

[0019] In a preferred embodiment of the present invention, the first conveying mechanism is a material elevator, including a lifting frame, on which a conveyor belt with several conveying hoppers is arranged, an upper barrel is fixed at the lower part of the lifting frame, and a lower barrel is arranged at the upper part of the lifting frame; a feeding device is connected to the upper barrel, and a discharge end of the second conveying mechanism is connected to the upper barrel.

[0020] In a preferred embodiment of the present invention, a heating device is coated on the side wall of the material storage tank. Ultraviolet lamps are respectively arranged on the top and the side of the material storage tank.

[0021] In the preferred embodiment of the present invention, a material storage tank is provided with an arch-breaking discharge mechanism at the tank body outlet. Further, the arch-breaking discharge mechanism comprises: a large hole is provided at the middle position of the tank body bottom plate, a rotating base connected to the tank body bottom plate through a fixed bracket is provided in the large hole, and a material discharge gap is provided between the rotating base and the large hole; a driving motor is connected to the rotating base in a transmission manner to drive the rotating base to rotate; a spiral blade mechanism is provided on the rotating base to drive the raw materials to flow to the material discharge gap, a baffle mechanism is also provided on the rotating base to rotate synchronously with the rotating base, and a conical discharge barrel with a pneumatic valve is provided below the tank body bottom plate.

[0022] In a preferred embodiment of the present invention, the feeding device includes a feeding hopper and a dust collector disposed above the feeding hopper.

[0023] In a preferred embodiment of the present invention, a fermentation tank is further included, the fermentation tank includes a tank body, the tank body includes a fermentation tank inlet and a fermentation tank outlet, a third outlet with a control valve is provided on the pipe chain conveyor, the fermentation tank inlet is connected to the third outlet of the pipe chain conveyor, and the fermentation tank outlet corresponds to the second conveying mechanism. Further, an air vent with a valve is provided on the upper part of the fermentation tank, and the air vent is connected to the induced draft fan to cool down the temperature.

[0024] In a preferred embodiment of the present invention, the second conveying mechanism is a scraper conveyor.

[0025] The raw materials are fed into the feeding device, and after being dusted by the dust collector, they enter the first conveying mechanism, and are conveyed to the steam mixing device through the first conveying mechanism. After the raw materials are mixed with high-temperature steam in the steam mixing device, they enter the material storage tank through the pipe chain conveyor for high-temperature sterilization. The sterilized raw materials are conveyed to the cooler through the second conveying mechanism and the first conveying mechanism in turn. After being cooled by the cooler, they enter the bacterial liquid inoculation device for inoculation. The inoculated raw materials enter the material storage tank or fermentation tank through the pipe chain conveyor for fermentation. If it is anaerobic fermentation, the raw materials in the tank will stop in the tank. Fermentation is carried out in the tank until the fermentation of the raw materials is completed; if it is aerobic fermentation, after the raw materials in the tank have fermented for a preset time, they are conveyed to the air supply box through the second conveying mechanism and the first conveying mechanism, and the raw materials are fully in contact with the air in the air supply box to replenish oxygen. After the raw materials come out of the air supply box, they enter the material storage tank or fermentation tank again through the tube chain conveyor for fermentation, and the cycle continues until the fermentation of the raw materials is completed; the fermented materials pass through the second conveying mechanism, the first conveying mechanism, and the tube chain conveyor in turn into the drying equipment for drying, until they reach the qualified moisture content and enter the crushing and packaging process.

[0026] The present invention is suitable for fermenting large quantities (more than 10 tons to 250 tons) of solid raw materials such as rapeseed meal, soybean meal, and cottonseed meal, and the system has the functions of anaerobic fermentation and aerobic fermentation of large quantities of solid raw materials. The equipment has high utilization rate, reduces production costs, improves production efficiency and economic benefits, and is easy to operate.

[0027] The features of the present invention can be clearly understood by referring to the drawings and the following detailed description of the preferred embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of Example 1.

[0029] Figure 2 Schematic diagram of the feeding device of Example 1.

[0030] Figure 3 for Figure 1 A local enlarged schematic diagram of the .

[0031] Figure 4 This is a schematic diagram of the tube chain conveyor of Example 1.

[0032] Figure 5 This is a schematic diagram of the material storage tank of Example 1. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments.

[0034] Example 1

[0035] See also Figure 1 A solid fermentation system mainly includes a feeding device 100, a first conveying mechanism 200, a steam mixing device, a bacterial liquid inoculation device, an air supply box, a pipe chain conveyor 400, a material storage tank 500, a fermentation tank 600, a second conveying mechanism 700, a drying device 800, etc.

[0036] See also Figure 2 The feeding device 100 includes a feeding hopper 110 and a dust collector 120 disposed above the feeding hopper. During the feeding process, the raw materials are first subjected to primary dust removal.

[0037] The first conveying mechanism is used to convey raw materials. In the present embodiment, the first conveying mechanism is a material elevator (not shown in the figure), which includes a lifting frame, on which a conveyor belt with several conveying hoppers is arranged, an upper barrel is fixed at the lower part of the lifting frame, and a lower barrel is arranged at the upper part of the lifting frame; the outlet end of the feed hopper is arranged above the upper barrel to facilitate the raw materials to enter the first conveying mechanism from the feed hopper. The material elevator is a conventional structure and will not be described in detail here.

[0038] The steam mixing device is connected to the first conveying mechanism and is used to mix the raw material with high-temperature steam; the bacterial liquid inoculation device is connected to the first conveying mechanism and is used to inoculate the raw material with bacteria; the air supply box is connected to the first conveying mechanism and is used to supplement oxygen to the raw material during the aerobic fermentation process.

[0039] See also Figure 3 In this embodiment, the steam mixing device, the bacterial liquid inoculation device and the air supply box share the same housing 300. The upper part of the housing is provided with a raw material inlet 311, a steam inlet 312, a bacterial liquid inlet 313 and an air outlet 314, and the bottom of the housing is provided with a raw material outlet 315. The raw material inlet 311 is connected to the first conveying mechanism, and a flow scale 320 is connected to the raw material inlet of the housing. The steam inlet 312 is connected to an external steam supply device with a regulating valve 316, and steam enters the housing through the steam inlet 312; the bacterial liquid inlet 313 is connected to an external bacterial liquid supply device, and a valve is provided at the bacterial liquid inlet 313, and the bacterial liquid enters the housing through the bacterial liquid inlet 313; the air outlet 314 is connected to an external blower, and a valve is provided at the air outlet 314, and external air enters the housing through the air outlet 314. Nozzles are provided at the steam inlet and the bacterial liquid inlet to enhance the steam mixing and inoculation effects.

[0040] After the raw materials enter the shell 300 from the raw material inlet 311, when steam mixing is required, the steam provided by the external steam supply device enters the shell through the steam inlet 312 to complete the steam mixing; when inoculation is required, the bacterial liquid provided by the external bacterial liquid supply device enters the shell through the bacterial liquid inlet 313 to complete the inoculation and mixing; when aerobic fermentation is required, the external blower replenishes fresh air into the shell through the air outlet 314.

[0041] In order to facilitate the outflow of raw materials from the raw material outlet 315, a rotating shaft with spiral blades 330 is arranged at the lower part of the shell, and the rotating shaft is connected to the driving motor. When the driving motor is started, the spiral blades 330 on the rotating shaft are driven to rotate, driving the raw materials to flow toward the raw material outlet along the direction of the spiral blades.

[0042] A temperature sensor is provided at the lower part of the shell, and a pneumatic valve 340 is provided at the raw material outlet 315 at the bottom of the shell. The raw material outlet 315 at the bottom of the shell is connected to the pipe chain conveyor 400.

[0043] The first conveying mechanism is connected to the housing through a main line 210 and a bypass line 220, and a three-way valve 230 is provided at the junction of the main line and the bypass line. A cooler 240 is provided on the main line. The cooler includes a box body, an inlet 241 is provided at the top of the box body, an outlet 242 is provided at the bottom, and a plurality of groups of vibration beds 243 are provided in the box body, each group of vibration beds is connected end to end, and the vibration bed includes an inclined vibration trough and a vibration motor that drives the vibration trough to vibrate. A fan 244 is provided at the bottom of the box body, and a pulse dust collector 245 is provided at the upper part of the box body. The fan 244 and the pulse dust collector 245 play a role in further dust removal.

[0044] See also Figure 4 The tube chain conveyor 400 is used to convey raw materials (such as rapeseed meal, cottonseed meal, soybean meal, etc.), and can be selected from ordinary tube chain conveyors on the market; it includes an inlet 440 and three outlets, and the inlet is connected to the raw material outlet at the bottom of the shell. The three outlets are respectively a first outlet 410, a second outlet 420, and a third outlet 430, and each outlet is provided with a pneumatic valve.

[0045] See also Figure 5 , the material storage tank 500 is used for high temperature sterilization. The material storage tank includes a tank body, the tank body includes a tank body inlet 511 and a tank body outlet 512, the tank body inlet is connected to the first outlet 410 of the tube chain conveyor, and a temperature sensor 520 for detecting the internal temperature is arranged on the side wall of the tank body; the top and side of the material storage tank are respectively provided with ultraviolet lamps 530 for sterilization. When the raw materials mixed with steam enter the material storage tank through the tube chain conveyor, they are sterilized for a predetermined time in the material storage tank. The tank body outlet corresponds to the second conveying mechanism. An insulation layer is arranged on the outer wall of the tank body.

[0046] Of course, a heating device may also be coated on the side wall of the material storage tank to further facilitate high-temperature sterilization.

[0047] An air vent 560 with a control valve is provided on the top of the tank body, and the air vent 560 is connected to an induced draft fan (not shown in the figure); when the raw materials enter the tank body, the valve of the air vent is opened, and the induced draft fan is started. The raw materials fall downward due to gravity, and the air flows upward under the action of the induced draft fan. The upward-flowing air cools the raw materials.

[0048] A cleaning manhole 550 is provided at the lower part of the tank body to facilitate cleaning of the inside of the tank body.

[0049] Since the raw materials are easy to solidify and precipitate, an arch-breaking discharging mechanism is provided at the outlet of the tank. In this embodiment, the arch-breaking discharging mechanism includes: a large hole is provided in the middle position of the tank bottom plate, a rotating base 541 connected to the tank bottom plate through a fixed bracket is provided in the large hole, and a material discharge gap 542 is provided between the rotating base and the large hole; a conical discharging barrel 545 with a pneumatic valve is provided below the tank bottom plate. The material discharge gap 542 is located on the inner side of the conical discharging barrel 545. A driving motor 546 is connected to the rotating base 541 in a transmission manner to drive the rotating base to rotate; a spiral blade mechanism 543 is provided on the rotating base to drive the raw materials to flow to the material discharge gap, and the spiral blade mechanism includes a spiral blade and a driving member for driving the spiral blade to rotate; a baffle mechanism 544 is also provided on the rotating base to rotate synchronously with the rotating base, and the baffle mechanism 544 includes a side plate and a top plate, the top plate is connected to the upper edge of the side plate, and a spiral blade extension hole 547 is provided on the side plate. The baffle mechanism 544 is used to prevent the material from entering the driving part of the spiral blade mechanism. An outer cover 548 is provided outside the driving motor 546. The outer cover 548 prevents the raw material from entering the driving motor 546. The arch-breaking discharging mechanism is used to ensure that the material surface is basically flat, the discharging is uniform, and the material is first-in-first-out during the discharging process.

[0050] The fermentation tank 600 is convenient for fermentation inside it. Its shape is similar to that of the material storage tank, including a tank body. The tank body includes a fermentation tank inlet and a fermentation tank outlet. The fermentation tank inlet is connected to the third outlet of the pipe chain conveyor, and the fermentation tank outlet corresponds to the second conveying mechanism. An air vent with a valve is provided on the upper part of the fermentation tank, and the air vent is connected to the induced draft fan. When the raw materials enter the fermentation tank, the valve of the air vent is opened, and the induced draft fan is started. The raw materials fall downward due to gravity, and the air flows upward under the action of the induced draft fan. The upward flowing air cools the raw materials. In order to facilitate discharging, the outlet of the fermentation tank is also provided with an arch-breaking discharging mechanism (with the same structure as the arch-breaking discharging mechanism of the material storage tank).

[0051] The second conveying mechanism 700 is used to convey the material in the material storage tank or fermentation tank to the first conveying mechanism; in this embodiment, the second conveying mechanism is a scraper. The height position of the scraper corresponds to the tank body outlet position of the material storage tank, and the front end (discharging end) position of the scraper corresponds to the upper barrel position of the material elevator (first conveying mechanism).

[0052] The drying equipment, whose inlet is connected to the second outlet of the tube chain conveyor, is used to dry the fermented material until it reaches the qualified moisture content and then enters the crushing and packaging process.

[0053] The workflow of this embodiment is:

[0054] The raw materials are fed into the feed hopper 110, and after the dust is removed by the dust collector 120, they are successively conveyed to the three-in-one housing 300 of the steam mixing device, the bacterial liquid inoculation device and the air supply box through the material hoist 200 and the bypass pipeline 220, and the valve of the external steam supply device is opened, and the steam provided by the external steam supply device enters the housing through the steam inlet 312 and is steam-mixed with the raw materials; the raw materials after steam mixing enter the material storage tank 500 through the pipe chain conveyor 400 for high-temperature sterilization, and the control system controls the sterilization time and temperature; the sterilized raw materials are successively conveyed to the cooler 240 through the scraper 700, the material hoist 200 and the main pipeline 210 to accelerate the cooling speed of the raw materials. After being cooled by the cooler, the raw materials enter the three-in-one housing 300, and the valve of the external bacterial liquid supply device is opened, and the bacterial liquid passes through the bacterial liquid. The inlet 313 is in the shell 300; the inoculated raw materials enter the fermentation tank 600 through the tube chain conveyor 400 for fermentation. If it is anaerobic fermentation, the raw materials in the tank will stop fermenting in the tank until the raw materials are fermented; if it is aerobic fermentation, the raw materials in the tank will be fermented for a preset time, and then they will be conveyed to the three-in-one shell 300 through the scraper 700, the material elevator 200, and the bypass pipeline 220 in turn, and the blower will be turned on, so that the raw materials are fully in contact with the air and oxygen is supplemented. After the end, the raw materials enter the fermentation tank 600 again through the tube chain conveyor for fermentation, and the cycle continues until the raw materials are fermented. The fermented materials are sequentially passed through the scraper, the material elevator, the bypass pipeline, the three-in-one shell, and the tube chain conveyor to enter the drying equipment for drying until they reach the qualified moisture content and enter the crushing and packaging process.

[0055] The present invention is suitable for fermenting large quantities (more than 10 tons to 250 tons) of solid raw materials such as rapeseed meal, soybean meal, and cottonseed meal, and the system has the functions of anaerobic fermentation and aerobic fermentation of large quantities of solid raw materials. The equipment has high utilization rate, reduces production costs, improves production efficiency and economic benefits, and is easy to operate.

[0056] Example 2

[0057] The difference from Example 1 is that the fermentation tank is reduced and a material storage tank is used for high-temperature sterilization and fermentation.

[0058] The workflow of this embodiment is:

[0059] The raw materials are put into the feed hopper and after the dust is removed by the dust collector, they are successively conveyed to the three-in-one shell of the steam mixing equipment, the bacterial liquid inoculation equipment and the air supply box through the material hoist and the bypass pipeline. The valve of the external steam supply equipment is opened, and the steam provided by the external steam supply equipment enters the shell through the steam inlet and is steam-mixed with the raw materials; the raw materials after steam mixing enter the material storage tank through the pipe chain conveyor for high-temperature sterilization; the sterilized raw materials are successively conveyed to the cooler through the scraper conveyor, the material hoist and the main pipeline to accelerate the cooling speed of the raw materials. After being cooled by the cooler, the raw materials enter the three-in-one shell, and the valve of the external bacterial liquid supply equipment is opened, and the bacterial liquid enters the shell through the bacterial liquid inlet; the raw materials after inoculation are passed through the The raw materials enter the material storage tank through the tube chain conveyor for fermentation. If it is anaerobic fermentation, the raw materials in the tank will stay in the tank for fermentation until the fermentation is completed; if it is aerobic fermentation, the raw materials in the tank will be fermented for a preset time, and then they will be conveyed to the three-in-one shell through the scraper, material elevator, and bypass pipeline in turn. The blower is turned on to allow the raw materials to fully contact with the air and replenish oxygen. After the end, the raw materials enter the material storage tank again through the tube chain conveyor for fermentation, and the cycle continues until the fermentation is completed. The fermented materials will enter the drying equipment through the scraper, material elevator, bypass pipeline, three-in-one shell, and tube chain conveyor in turn for drying until they reach the qualified moisture content and enter the crushing and packaging process.

[0060] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A solid fermentation system, characterized in that: include: Feeding device, convenient for inputting raw materials; A first conveying mechanism, used for conveying raw materials, wherein the outlet end of the feeding device is connected to the first conveying mechanism; The steam mixing device is connected to the first conveying mechanism and is used to mix the raw material with the high-temperature steam. The steam mixing device comprises a shell, and the shell is provided with a raw material inlet, a raw material outlet and a steam inlet. The raw material inlet is connected to the first conveying mechanism, and the steam inlet is connected to an external steam supply device. The raw material outlet of the steam mixing device is connected to the pipe chain conveyor. The bacterial liquid inoculation equipment is connected to the first conveying mechanism, the bacterial liquid inoculation equipment comprises a shell, the shell is provided with a raw material inlet, a raw material outlet and a bacterial liquid inlet, the bacterial liquid inlet is connected to an external bacterial liquid supply device; the raw material outlet of the bacterial liquid inoculation equipment is connected to a pipe chain conveyor; Tube chain conveyor to transfer raw materials; A material storage tank is provided with a first outlet with a control valve on the pipe chain conveyor, the material storage tank is communicated with the first outlet of the pipe chain conveyor, the material storage tank comprises a tank body, the tank body comprises a tank body inlet and a tank body outlet, and a temperature sensor for detecting the internal temperature is provided on the side wall of the tank body; A second conveying mechanism is connected to the outlet of the material storage tank and to the first conveying mechanism, and is used to convey the material to the first conveying mechanism; A drying device is provided with a second outlet with a control valve on the tube chain conveyor, and an inlet of the drying device is connected to the second outlet of the tube chain conveyor; It also includes an air supply box, including a shell, the shell is provided with a raw material inlet, a raw material outlet and an air outlet, the raw material inlet is connected to the first conveying mechanism, the air outlet is connected to the external blower; the raw material outlet of the air supply box is connected to the pipe chain conveyor; The side wall of the tank body of the material storage tank is coated with a heating device.

2. The solid fermentation system according to claim 1, characterized in that: The steam mixing device, the bacterial liquid inoculation device and the air supply box share the same shell. The upper part of the shell is provided with a raw material inlet, a steam inlet, a bacterial liquid inlet and an air outlet, and the bottom of the shell is provided with a raw material outlet.

3. The solid fermentation system according to claim 2, characterized in that: A rotating shaft with spiral blades is arranged at the lower part of the shell.

4. The solid fermentation system according to claim 2, characterized in that: A flow scale is connected to the raw material inlet of the shell.

5. The solid fermentation system according to claim 1, characterized in that: The first conveying mechanism is connected to the steam mixing device and the bacterial liquid inoculation device through two pipelines respectively, and a cooler is arranged on the pipeline connecting the first conveying mechanism and the steam mixing device.

6. The solid fermentation system according to claim 5, characterized in that: The cooler includes a box body, with an inlet provided at the top and an outlet provided at the bottom. Several groups of vibration beds are provided in the box body, and each group of vibration beds is connected end to end. The vibration beds include obliquely arranged vibration troughs and a vibration motor that drives the vibration troughs to vibrate. A fan is provided at the bottom of the box body, and a pulse dust collector is provided at the top of the box body.

7. The solid fermentation system according to claim 1, characterized in that: The first conveying mechanism is a material elevator, including a lifting frame, on which a conveyor belt with several conveying hoppers is arranged, an upper barrel is fixed at the lower part of the lifting frame, and a lower barrel is arranged at the upper part of the lifting frame; a feeding device is connected to the upper barrel, and a discharge end of the second conveying mechanism is connected to the upper barrel.

8. The solid fermentation system according to claim 1, characterized in that: The top and side of the material storage tank are respectively provided with ultraviolet lamp tubes.

9. The solid fermentation system according to claim 1, characterized in that: The tank body outlet of the material storage tank is provided with an arch-breaking material discharging mechanism.

10. The solid fermentation system according to claim 9, characterized in that: The arch-breaking discharging mechanism includes: a large hole is arranged in the middle position of the bottom plate of the tank body, a rotating base connected to the bottom plate of the tank body through a fixed bracket is arranged in the large hole, and a material discharge gap is provided between the rotating base and the large hole; a driving motor is transmission-connected to the rotating base to drive the rotating base to rotate; a spiral blade mechanism is arranged on the rotating base to drive the raw materials to flow to the material discharge gap, and a baffle mechanism that rotates synchronously with the rotating base is also arranged on the rotating base, and a conical discharging barrel with a pneumatic valve is arranged below the bottom plate of the tank body.

11. The solid fermentation system according to claim 1, characterized in that: It also includes a fermentation tank, which includes a tank body, and the tank body includes a fermentation tank inlet and a fermentation tank outlet. A third outlet with a control valve is provided on the tube chain conveyor, the fermentation tank inlet is connected to the third outlet of the tube chain conveyor, and the fermentation tank outlet corresponds to the second conveying mechanism.

12. The solid fermentation system according to claim 11, characterized in that: An air vent with a valve is arranged on the upper part of the fermentation tank, and the air vent is communicated with the induced draft fan.

13. The solid fermentation system according to claim 11, characterized in that: The tank body outlet of the fermentation tank is provided with an arch-breaking discharging mechanism.

14. The solid fermentation system according to claim 1, characterized in that: The feeding device comprises a feeding hopper and a dust collector arranged above the feeding hopper.

15. The solid fermentation system according to claim 1, characterized in that: The second conveying mechanism is a scraper conveyor.

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