Solid material fermentation combination unit and solid fermentation material preparation method

Abstract

The invention relates to the technical field of microbial fermentation, and discloses a solid material fermentation combination unit and a solid fermentation material.The solid material fermentation combination unit comprises a fermentation combination tower, and the fermentation combination tower is composed of three fermentation bins which are longitudinally and sequentially combined and are the same in structure; the fermentation tank is used for sequentially receiving materials from top to bottom and completing multi-stage fermentation; the fermentation bin comprises uniform spraying longitudinal pipes longitudinally arranged in the fermentation area in an array mode and a pressure supply assembly connected with the uniform spraying longitudinal pipes, a plurality of flexible elastic material pushing walls are arranged on the outer walls of the uniform spraying longitudinal pipes at intervals in the axial direction, and multiple sets of telescopic columns are arranged at the positions, corresponding to the material pushing walls, in the uniform spraying longitudinal pipes; each set of telescopic columns is composed of four telescopic units distributed in a cross shape, and the telescopic ends of the telescopic units abut against the four directions of the inner wall of the material pushing wall respectively. According to the invention, the flexible elastic material pushing wall is arranged on the outer wall of the uniform spraying longitudinal pipe, and the material pushing wall is regularly driven by the internal telescopic column to bulge in the radial direction, so that the fermentation material can be periodically and flexibly disturbed.

Description

Technical Field

[0001] The present invention relates to the field of microbial fermentation, and more particularly to a solid material fermentation combination unit and a method for preparing a solid fermentation material. Background Art

[0002] Solid matter fermentation is an important production method in the field of biotechnology, widely used in industries such as feed, fertilizer, food, and medicine. Traditional solid matter fermentation usually adopts static pile fermentation or simple stirring fermentation.

[0003] During the fermentation process, solid materials are prone to compaction due to factors such as microbial metabolites and water evaporation. This leads to poor internal permeability, hindered oxygen and heat transfer, and affected the normal growth and metabolism of microorganisms, reducing fermentation efficiency and product quality. To address this issue, we propose a solid material fermentation assembly unit and a method for preparing solid fermentation materials. Summary of the Invention

[0004] The present invention provides a solid material fermentation combination unit and a method for preparing solid fermentation material, which solves the technical problem in the related art that solid materials become compacted, resulting in poor internal permeability of the material, obstructed oxygen and heat transfer, affecting the normal growth and metabolism of microorganisms, and reducing fermentation efficiency and product quality.

[0005] A first aspect of the present invention provides a solid material fermentation assembly unit, comprising: a fermentation assembly tower, the fermentation assembly tower being composed of three fermentation bins of the same structure that are sequentially assembled longitudinally, and being used to sequentially receive materials from top to bottom and complete multi-stage fermentation; The fermentation bin includes a longitudinal array of uniform spraying longitudinal pipes arranged in the fermentation area and a pressure supply assembly connected to the uniform spraying longitudinal pipes. A plurality of flexible elastic pusher walls are arranged at intervals along the axial direction on the outer wall of the uniform spraying longitudinal pipes. A plurality of groups of telescopic columns are arranged inside the uniform spraying longitudinal pipes corresponding to each pusher wall position. Each group of telescopic columns consists of four telescopic units distributed in a cross shape, and their telescopic ends are respectively connected to the four directions of the inner wall of the pusher wall. The telescopic columns are controlled and connected to the pressure supply assembly through pipelines. When the fermentation bin is filled with solid materials, the bacteria gas is transported through the uniform spray longitudinal pipe. At the same time, the pressure supply component drives the telescopic column to extend at a fixed time, pushing the push wall of the corresponding height to bulge in four directions, causing the solid material in the area to produce radial displacement to reduce compaction. After the material in the current fermentation bin reaches the preset fermentation cycle, it is discharged into the next-level fermentation bin to continue fermentation, and the cycle is repeated until the entire fermentation process is completed.

[0006] Furthermore, the three fermentation chambers of the fermentation combination tower are the first fermentation chamber, the second fermentation chamber and the third fermentation chamber, which are distributed from top to bottom as the first fermentation chamber, the second fermentation chamber and the third fermentation chamber, and are arranged head to tail vertically.

[0007] Furthermore, two identical and parallel spiral feeding members are provided at the top of the first fermentation bin, each spiral feeding member is composed of two propellers, and the rotation of the propellers in the spiral feeding member transports the solid material into the first fermentation bin until the solid material accumulation height reaches a specified height.

[0008] Furthermore, a plurality of spiral cloth members are provided below the spiral feeding member, the plurality of spiral cloth members are parallel to each other, and the plurality of spiral cloth members are rotatably connected to the first fermentation bin, and the plurality of spiral cloth members are driven by belts.

[0009] Furthermore, a trapezoidal material collecting bin is fixedly provided at the lower part of the first fermentation bin, the width of the material collecting bin gradually decreases from top to bottom, and a plurality of discharge rollers are provided at the bottom of the material collecting bin.

[0010] Furthermore, several discharge rollers are parallel to each other, and several opening and closing plates are fixedly provided on each discharge roller. The opening and closing plates are all triangular in shape. The opening and closing plates on two adjacent discharge rollers are meshed with each other to control the lowering of the solid raw material.

[0011] Furthermore, an air supply fan is provided on one side of the fermentation combination tower, and the air outlet end of the air supply fan is fixedly connected to the air supply main pipe. The air outlet end of the air supply main pipe is provided with three diversion pipe networks, and the three diversion pipe networks correspond to the first fermentation bin, the second fermentation bin and the third fermentation bin respectively. At the same time, the diversion pipe networks in the first fermentation bin, the second fermentation bin and the third fermentation bin are all interconnected with the corresponding uniform spray longitudinal pipes.

[0012] Furthermore, the pressure supply component also includes a pressurized air pump, and the air delivery end of the pressurized air pump is connected to a pressurized pipe. The diameter of the pressurized pipe is smaller than the diameter of the air supply main pipe, the diversion pipe network and the uniform spray longitudinal pipe, and the pressurized pipe passes through the air supply main pipe, the diversion pipe network and the uniform spray longitudinal pipe in sequence, and several groups of telescopic columns are interconnected with the pressurized pipe.

[0013] Furthermore, an air collecting and induced draft pipe is fixedly provided on the top of the fermentation combination tower, and an induced draft fan is connected to the end of the air collecting and induced draft pipe away from the fermentation combination tower, and an air outlet end of the induced draft fan is connected to the waste gas treatment tank.

[0014] A second aspect of the present invention provides a method for preparing a solid fermentation material using a fermentation combination unit, comprising the following steps: S1. Material filling: solid materials are fed into the first fermentation bin through the spiral feeding part, and are leveled to the specified height by the spiral spreading part so that the uniform spraying longitudinal pipe is completely buried in the material; S2, first-stage fermentation: Start the air supply fan to introduce bacterial gas into the uniform spray longitudinal pipe, and at the same time, the pressurized air pump drives the telescopic column to extend in a timely manner, pushing the push wall to bulge radially to loosen the material, and ferment in the first fermentation bin for a preset period; S3, step-by-step discharge: Control the step-by-step rotation of the discharge roller of the first fermentation bin, and discharge the surface material into the second fermentation bin in a quantitative manner through the alternating engagement of the opening and closing plates; S4, secondary fermentation: Repeat the air supply and telescopic column actuation operations of step S2 in the second fermentation chamber to complete the second fermentation cycle; S5, final fermentation: Control the discharge roller of the second fermentation bin to rotate step by step, discharge the material into the third fermentation bin, and repeat the air supply and anti-caking operations until the fermentation is completed; S6. Continuous circulation: When the first fermentation bin discharges material into the second fermentation bin, new material is simultaneously loaded, forming a continuous circulation operation of the three-level fermentation bin.

[0015] The beneficial effects of the present invention are: The present invention provides a flexible and elastic pushing wall on the outer wall of the uniform spraying longitudinal pipe, and uses an internal telescopic column to regularly drive the pushing wall to bulge radially. This can periodically and flexibly disturb the fermented material, effectively destroy the compaction of the material, increase the porosity and air permeability of the material, and promote the uniform transfer of oxygen and heat, thereby significantly improving the fermentation efficiency and material conversion rate. The fermentation combination tower consists of three fermentation chambers connected in sequence longitudinally. Materials can be fermented in multiple stages from top to bottom. Combined with the step-by-step discharge mechanism, the fermentation process is continuous and automated, which greatly improves production efficiency and reduces labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the back structure of the fermentation combination tower of the present invention; Figure 3 This is a schematic diagram of the internal structure of the first fermentation bin of the present invention; Figure 4 It is a schematic structural diagram of the aggregate bin of the present invention; Figure 5 It is a schematic diagram of the structure of the spiral cloth piece of the present invention; Figure 6 It is a schematic diagram of the structure of the spiral discharge roller of the present invention; Figure 7 This is a schematic diagram of the uniform spray longitudinal pipe structure of the present invention; Figure 8 It is a schematic diagram of the internal structure of the uniform spray longitudinal pipe of the present invention.

[0017] In the figure: 11. Fermentation combination tower; 21. First fermentation bin; 22. Second fermentation bin; 23. Third fermentation bin; 24. Spiral feeder; 25. Spiral distribution member; 26. Discharge roller; 27. Collection bin; 28. Opening and closing plate; 31. Air supply fan; 32. Air supply main pipe; 33. Diversion pipe network; 34. Uniform spray longitudinal pipe; 35. Air collection and induced draft pipe; 36. Induced draft fan; 37. Waste gas treatment tank; 38. Jet hole; 41. Pressurized pipe; 42. Pressurized air pump; 43. Pushing wall; 44. Telescopic column. DETAILED DESCRIPTION

[0018] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0019] Example 1 like Figure 1 - Figure 8 As shown, a solid material fermentation combination unit, a fermentation combination tower 11, is composed of three fermentation chambers with the same structure that are sequentially combined longitudinally, and is used to sequentially receive materials from top to bottom and complete multi-stage fermentation; The fermentation bin includes a longitudinal array of uniform spraying longitudinal pipes 34 arranged in the fermentation area and a pressure supply assembly connected to the uniform spraying longitudinal pipes 34. The outer wall of the uniform spraying longitudinal pipes 34 is provided with a plurality of flexible elastic pusher walls 43 at intervals along the axial direction. Inside the uniform spraying longitudinal pipes 34, a plurality of groups of telescopic columns 44 are provided corresponding to the position of each pusher wall 43. Each group of telescopic columns 44 is composed of four telescopic units distributed in a cross shape, and its telescopic ends are respectively connected to the four directions of the inner wall of the pusher wall 43. The telescopic columns 44 are controlled and connected to the pressure supply assembly through pipelines. When the fermentation bin is filled with solid materials, the bacterial strain gas is transported through the uniform spray longitudinal pipe 34, and the pressure supply component drives the telescopic column 44 to extend at a fixed time, pushing the pushing wall 43 of the corresponding height to bulge in four directions, causing the solid material in the area to produce radial displacement to reduce compaction. After the material in the current fermentation bin reaches the preset fermentation cycle, it is discharged into the next-level fermentation bin to continue fermentation, and the cycle is repeated until the entire fermentation process is completed.

[0020] The three fermentation chambers of the fermentation combination tower 11 are the first fermentation chamber 21, the second fermentation chamber 22 and the third fermentation chamber 23. The three fermentation chambers are distributed from top to bottom as the first fermentation chamber 21, the second fermentation chamber 22 and the third fermentation chamber 23. The first fermentation chamber 21, the second fermentation chamber 22 and the third fermentation chamber 23 are arranged end to end vertically.

[0021] It can realize continuous gradient fermentation of materials, shorten the total fermentation cycle, reduce the floor space by three-dimensional layout, and reduce equipment investment. Two identical and parallel spiral feed members 24 are provided at the top of the first fermentation bin 21. Each spiral feed member 24 is composed of two propellers. The rotation of the propellers in the spiral feed member 24 transports the solid material into the first fermentation bin 21 until the solid material accumulation height reaches a specified height.

[0022] A plurality of spiral distribution members 25 are provided below the spiral feeding member 24 . The plurality of spiral distribution members 25 are parallel to each other and are all rotatably connected to the first fermentation bin 21 . The plurality of spiral distribution members 25 are driven by belts.

[0023] A trapezoidal material collecting bin 27 is fixedly provided at the lower part of the first fermentation bin 21. The width of the material collecting bin 27 gradually decreases from top to bottom. A plurality of discharge rollers 26 are provided at the bottom of the material collecting bin 27 to guide the material to converge to the center of the discharge roller 26 and eliminate dead corners in the bin.

[0024] Several discharge rollers 26 are parallel to each other, and each discharge roller 26 is fixed with several opening and closing plates 28, which are all triangular in shape. The opening and closing plates 28 on two adjacent discharge rollers 26 engage with each other to control the lowering of solid raw materials.

[0025] Step-by-step quantitative discharging with an accuracy error of less than 5%. The triangular opening and closing plates 28 engage to prevent leakage, ensuring independent timing control at each level of fermentation bins.

[0026] A fan 31 is provided on one side of the fermentation combination tower 11. The air outlet end of the fan 31 is fixedly connected to an air supply main pipe 32. The air outlet end of the air supply main pipe 32 is provided with three diversion pipe networks 33. The three diversion pipe networks 33 correspond to the first fermentation bin 21, the second fermentation bin 22 and the third fermentation bin 23 respectively. At the same time, the diversion pipe networks 33 in the first fermentation bin 21, the second fermentation bin 22 and the third fermentation bin 23 are all interconnected with the corresponding uniform spray longitudinal pipes 34.

[0027] The pressure supply component also includes a pressurized air pump 42, and the air delivery end of the pressurized air pump 42 is connected to a pressurized pipe 41. The diameter of the pressurized pipe 41 is smaller than the diameter of the air supply main pipe 32, the diversion pipe network 33 and the uniform spray longitudinal pipe 34, and the pressurized pipe 41 passes through the air supply main pipe 32, the diversion pipe network 33 and the uniform spray longitudinal pipe 34 in sequence, and several groups of telescopic columns 44 are interconnected with the pressurized pipe 41.

[0028] An air collecting and induced draft pipe 35 is fixedly provided on the top of the fermentation combination tower 11 . An induced draft fan 36 is connected to one end of the air collecting and induced draft pipe 35 away from the fermentation combination tower 11 . An exhaust gas treatment tank 37 is connected to the air outlet end of the induced draft fan 36 .

[0029] When in use, it is first necessary to connect multiple drive motors to the spiral feed member 24, the spiral distribution member 25 and the discharge roller 26 respectively, and control the operation of the spiral feed member 24, the spiral distribution member 25 and the discharge roller 26 through the corresponding drive motors, and connect the feeder of the processed solid materials to the feed port of the spiral feed member 24; The solid material is discharged into the first fermentation bin 21 by the rotation of the spiral feed member 24. The solid material first falls into the collection bin 27. As the spiral feed member 24 feeds, the solid material gradually rises until it reaches the height of a row of spiral distribution members 25. At this time, the solid material may present a natural conical pile shape. Through the rotation of several spiral distribution members 25, the solid material is spread out under the push of the spiral blades until the solid material is flattened. The spiral feed member 24 stops working and stops feeding. At this time, the diversion pipe network 33 and the uniform spray longitudinal pipe 34 are completely buried in the solid material.

[0030] After the materials are loaded, fermentation can begin in the first fermentation bin 21. At the same time, according to actual needs, the air supply fan 31 blows the required air into the air supply main 32, the branch pipe network 33, and the uniform spraying longitudinal pipe 34 in sequence. Finally, the air is sprayed out from the air injection holes 38 arrayed on the uniform spraying longitudinal pipe 34 and diffused into the solid materials in the first fermentation bin 21. At the same time, the pressurized air pump 42 is operated to increase pressure in the pressurized pipe 41. As the air pressure increases, all the telescopic columns 44 are extended, and the extension of the telescopic columns 44 pushes the pusher wall 43 to bulge, thereby pushing the solid materials at the same level to move. After that, the pressure in the pressurized pipe 41 is released, and the pusher wall 43 is reset, so that the solid materials are moved again.

[0031] If the solid material needs to be fermented for 48 hours, when the solid material has been fermented in the first fermentation bin 21 for 12 hours, the discharge roller 26 in the first fermentation bin 21 is controlled to rotate so that the opening and closing plates 28 are alternately engaged and separated. Each time the solid material is opened, it can fall into the second fermentation bin 22. The discharge roller 26 is controlled by a stepper motor, so that a plane of solid material can be discharged each time until the solid material discharged into the second fermentation bin 22 reaches the same level as the material in the first fermentation bin 21. Then the discharge is stopped, and the solid material that has been fermented for 12 hours continues to ferment in the second fermentation bin 22 for another 12 hours. After that, the solid material that has reached the fermentation time in the second fermentation bin 22 is discharged to the third fermentation bin 23 for another 12 hours of fermentation. While the first fermentation bin 21 is discharging material into the second fermentation bin 22 , the first fermentation bin 21 can also be supplied with material at the same time. While the second fermentation bin 22 is discharging material into the third fermentation bin 23 , the first fermentation bin 21 can also be controlled to discharge material into the second fermentation bin 22 .

[0032] The waste gas from the fermentation combination tower 11 is driven by the induced draft fan 36 and discharged into the waste gas treatment tank 37 through the air collecting induced draft pipe 35, where the waste gas is purified.

[0033] Each time the materials in the fermentation bin are changed, the solid materials are broken up and reorganized.

[0034] Example 2 A method for preparing a solid fermentation material using a fermentation combination unit comprises the following steps: S1. Material loading: Solid materials are fed into the first fermentation chamber 21 via the spiral feeding member 24 and leveled to a specified height via the spiral spreading member 25 so that the uniform spraying longitudinal pipe 34 is completely buried in the materials; S2, first stage fermentation: Start the air supply fan 31 to introduce the bacterial seed gas into the uniform spraying longitudinal pipe 34, and at the same time, the pressurized air pump 42 drives the telescopic column 44 to extend in a timely manner, pushing the pushing wall 43 to bulge radially to loosen the material, and ferment in the first fermentation bin 21 for a preset period; S3, step-by-step discharge: Control the discharge roller 26 of the first fermentation bin 21 to rotate step by step, and discharge the surface material into the second fermentation bin 22 in a quantitative manner through the alternating engagement of the opening and closing plates 28; S4, secondary fermentation: Repeat the air supply and telescopic column 44 actuation operations of step S2 in the second fermentation chamber 22 to complete the second fermentation cycle; S5, final fermentation: Control the discharge roller 26 of the second fermentation bin 22 to rotate step by step, discharge the material into the third fermentation bin 23, and repeat the air supply and anti-caking operations until the fermentation is completed; S6, continuous circulation: when the first fermentation bin 21 discharges materials into the second fermentation bin 22, new materials are simultaneously loaded, forming a continuous circulation operation of the three-stage fermentation bin.

[0035] To prepare amino acid feed: The sprayed corn husks, corn, sugar residue, straw, etc. are removed and crushed.

[0036] Sprayed corn husks, corn, sugar residue, etc. are tested according to standards before entering the factory; they are removed by air conveying and then finely ground; the parameters of the grinder are controlled to ensure that the material after grinding is ≤0.8mm.

[0037] Nutrient preparation for solid fermentation: Mix 7.9% crushed corn, 7.9% corn dregs, 31.8% corn husks, 7.9% corn steep liquor, 0.2% molasses, and 43% threonine mother liquor according to the given proportions, heat and sterilize, and set aside.

[0038] Saccharomyces cerevisiae and Lactobacillus acidophilus fermentation broth culture: The nutrients required by brewer's yeast and Lactobacillus acidophilus, such as peptone, yeast extract, inorganic salts, etc., are prepared in proportion, sterilized, and then inoculated with the brewer's yeast and Lactobacillus acidophilus seed liquid cultured in the laboratory. The pure strains are cultured for 32 hours until the end of the culture, and then the pressure is maintained for use.

[0039] Mixing machine mixing: The above materials and 0.2% of brewer's yeast seed liquid and 0.2% of Lactobacillus acidophilus seed liquid are fed into a mixer, mixed evenly through secondary mixing, and then conveyed to the first fermentation bin 21 through a spiral.

[0040] Solid fermentation: The mixed material enters the solid first fermentation bin 21, undergoes processes such as turning and cooling, and is cultured at 40-50°C for 12 hours, cultured in the second fermentation bin 22 for 12 hours, and finally cultured in the third fermentation bin 23 for 12 hours. The fermentation is terminated after the fermentation endpoint is determined by detection.

[0041] Product drying: After fermentation, the material is transported to the dryer for drying to reduce its moisture content to below 12%.

[0042] Product crushing and packaging: After drying, the material enters the crusher for crushing, controls its particle size at 1.0mm, and is transported to the finished product warehouse for packaging under negative pressure and quantitative packaging.

[0043] The above describes the embodiments of the present invention, but the present invention is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms based on the inspiration of this embodiment, all of which are protected by this embodiment.

Claims

1. A solid material fermentation combination unit, characterized in that: include: A fermentation combination tower (11), the fermentation combination tower (11) is composed of three fermentation bins that are longitudinally combined in sequence and have the same structure, and is used to sequentially receive materials from top to bottom and complete multi-stage fermentation; The fermentation bin comprises a longitudinal array of uniform spray longitudinal pipes (34) arranged in the fermentation area and a pressure supply assembly connected to the uniform spray longitudinal pipes (34), the outer wall of the uniform spray longitudinal pipes (34) is provided with a plurality of flexible elastic pusher walls (43) at intervals along the axial direction, the interior of the uniform spray longitudinal pipes (34) is provided with a plurality of groups of telescopic columns (44) corresponding to the position of each pusher wall (43), each group of telescopic columns (44) is composed of four telescopic units distributed in a cross shape, and the telescopic ends thereof are respectively connected to the four directions of the inner wall of the pusher wall (43), and the telescopic columns (44) are controlled and connected to the pressure supply assembly through pipelines; When the fermentation bin is filled with solid materials, the bacterial strain gas is transported through the uniform spray longitudinal pipe (34), and the pressure supply component drives the telescopic column (44) to extend at a fixed time, pushing the push wall (43) of the corresponding height to bulge in four directions, causing the solid materials in the area to produce radial displacement to reduce compaction. After the material in the current fermentation bin reaches the preset fermentation cycle, it is discharged into the next level fermentation bin to continue fermentation, and the cycle is repeated until the entire fermentation process is completed.

2. A solid material fermentation combined unit according to claim 1, characterized in that: The three fermentation chambers of the fermentation combination tower (11) are respectively a first fermentation chamber (21), a second fermentation chamber (22) and a third fermentation chamber (23). The three fermentation chambers are arranged from top to bottom as the first fermentation chamber (21), the second fermentation chamber (22) and the third fermentation chamber (23). The first fermentation chamber (21), the second fermentation chamber (22) and the third fermentation chamber (23) are arranged end to end in a longitudinal direction.

3. A solid material fermentation combined unit according to claim 2, characterized in that: Two identical and mutually parallel spiral feed members (24) are provided at the top of the first fermentation bin (21), each of the spiral feed members (24) being composed of two screw propellers. The rotation of the screw propellers in the spiral feed members (24) transports the solid material into the first fermentation bin (21) until the solid material accumulation height reaches a specified height.

4. A solid material fermentation combined unit according to claim 3, characterized in that: A plurality of spiral distribution members (25) are provided below the spiral feeding member (24), the plurality of spiral distribution members (25) are parallel to each other, and the plurality of spiral distribution members (25) are all rotatably connected to the first fermentation bin (21), and the plurality of spiral distribution members (25) are driven by belts.

5. The solid material fermentation combined unit according to claim 2, characterized in that: A trapezoidal material collecting bin (27) is fixedly provided at the lower portion of the first fermentation bin (21), the width of the material collecting bin (27) gradually decreasing from top to bottom, and a plurality of discharge rollers (26) are provided at the bottom of the material collecting bin (27).

6. The solid material fermentation combined unit according to claim 5, characterized in that: The plurality of discharge rollers (26) are parallel to each other, and each discharge roller (26) is fixedly provided with a plurality of opening and closing plates (28), and the plurality of opening and closing plates (28) are all triangular, and the opening and closing plates (28) on two adjacent discharge rollers (26) are meshed with each other to control the lowering of the solid raw material.

7. The solid material fermentation assembly unit according to claim 2, characterized in that: An air supply fan (31) is provided on one side of the fermentation combination tower (11). The air outlet end of the air supply fan (31) is fixedly connected to an air supply main pipe (32). The air outlet end of the air supply main pipe (32) is provided with three branch pipe networks (33). The three branch pipe networks (33) correspond to the first fermentation bin (21), the second fermentation bin (22), and the third fermentation bin (23), respectively. At the same time, the branch pipe networks (33) in the first fermentation bin (21), the second fermentation bin (22), and the third fermentation bin (23) are all interconnected with the corresponding uniform spray longitudinal pipe (34).

8. The solid material fermentation combined unit according to claim 7, characterized in that: The pressure supply assembly further includes a pressurized air pump (42), the air delivery end of the pressurized air pump (42) is connected to a pressurized pipe (41), the diameter of the pressurized pipe (41) is smaller than the diameters of the air supply main pipe (32), the diversion pipe network (33) and the uniform spray longitudinal pipe (34), and the pressurized pipe (41) sequentially passes through the air supply main pipe (32), the diversion pipe network (33) and the uniform spray longitudinal pipe (34), and a plurality of groups of the telescopic columns (44) are interconnected with the pressurized pipe (41).

9. The solid material fermentation assembly unit according to claim 1, characterized in that: An air collecting and induced draft pipe (35) is fixedly provided on the top of the fermentation combination tower (11), and an induced draft fan (36) is connected to one end of the air collecting and induced draft pipe (35) away from the fermentation combination tower (11), and an air outlet end of the induced draft fan (36) is connected to an exhaust gas treatment tank (37).

10. A method for preparing a solid fermentation material using the fermentation combination unit according to any one of claims 1 to 9, characterized in that: The steps include: S1. Material filling: solid materials are fed into the first fermentation chamber (21) through the spiral feeding member (24), and are leveled to a specified height by the spiral spreading member (25), so that the uniform spraying longitudinal pipe (34) is completely buried in the materials; S2, first-stage fermentation: start the air supply fan (31) to introduce bacterial gas into the uniform spraying longitudinal pipe (34), and at the same time, the pressurized air pump (42) drives the telescopic column (44) to extend in a timely manner, pushing the pushing wall (43) to bulge radially to loosen the material, and ferment in the first fermentation bin (21) for a preset period; S3, step-by-step discharge: controlling the discharge roller (26) of the first fermentation bin (21) to rotate step by step, and discharging the surface material into the second fermentation bin (22) in a quantitative manner through the alternating engagement of the opening and closing plates (28); S4, secondary fermentation: repeating the air supply and telescopic column (44) actuation operations of step S2 in the second fermentation chamber (22) to complete the second fermentation cycle; S5, final fermentation: controlling the discharge roller (26) of the second fermentation bin (22) to rotate stepwise, discharging the material into the third fermentation bin (23), and repeating the air supply and anti-caking operations until the fermentation is completed; S6, continuous circulation: When the first fermentation bin (21) discharges material into the second fermentation bin (22), new material is simultaneously loaded, forming a continuous circulation operation of the three-stage fermentation bin.

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