Preparation equipment of enzyme method mixed bacteria fermented feed additive

Abstract

The utility model relates to feed processing technical field, concretely is a kind of preparation equipment of enzyme method mixed bacteria fermentation feed additive, including load platform and electric cabinet, the upper surface of load platform is sequentially provided with crushing assembly, enzymatic hydrolysis reaction tank and fermentation tank from right to left, the inner wall of enzymatic hydrolysis reaction tank and fermentation tank is all provided with the heating pipe of electric connection with electric cabinet, the upper end of enzymatic hydrolysis reaction tank is detachably connected with transmission hose, the other end of transmission hose is detachably connected with pH adjusting assembly, the outer surface of enzymatic hydrolysis reaction tank and fermentation tank is sequentially provided with multiple pH electrodes from top to bottom, and the multiple pH electrodes are electrically connected with pH adjusting assembly.The preparation equipment of enzyme method mixed bacteria fermentation feed additive, enzyme method processing is combined with mixed bacteria fermentation, and enzyme hydrolysis can quickly degrade crude fiber, provides sufficient nutrition for mixed bacteria fermentation, and mixed bacteria fermentation can further convert nutrient substance, the synergistic effect of both, improve the nutrient conversion efficiency and fiber degradation efficiency, reduce fermentation cycle.

Description

Technical Field

[0001] This utility model relates to the field of feed processing technology, specifically to a device for preparing enzymatic mixed-culture fermentation feed additives. Background Technology

[0002] Feed additives refer to small or trace amounts of substances added during feed production, processing, and use. Although they typically account for less than 5% of feed, they can significantly improve feed quality, enhance livestock and poultry production performance, ensure animal health, and ultimately support the safety of livestock products. They are core adjuvants for the efficient development of modern feed industry and animal husbandry. In the field of feed additives, stevia stands out due to its natural, high-sweetness, and low-calorie properties, as well as its multiple positive effects on livestock and poultry production. Stevia produces a large amount of stevia residue after extracting steviol glycosides, which contains cellulose, hemicellulose, small amounts of protein, and minerals. While stevia residue contains nutrients, its high crude fiber content, complex structure, and the presence of anti-nutritional factors result in low digestibility and utilization rates for livestock and poultry when used directly as feed, leading to waste of resources and environmental pollution. Enzymatic treatment offers significant advantages in stevia residue processing. Cellulase and hemicellulase can specifically degrade crude fiber, converting it into small-molecule sugars. Compared to simple physical treatment, the crude fiber degradation rate can be increased by 30%-50%. The enzymatic hydrolysis process is gentle and does not damage proteins, minerals, or other nutrients. It also exposes the encapsulated nutrients for subsequent utilization while reducing the activity of anti-nutritional factors.

[0003] However, existing technologies have the following problems in practical use; Currently, traditional simple microbial fermentation treatment of stevia residue suffers from problems such as low crude fiber degradation efficiency, long fermentation cycle, and poor nutrient conversion effect. Moreover, existing equipment does not efficiently synergize enzymatic treatment with mixed microbial fermentation, failing to fully leverage the advantages of both methods and thus restricting the efficient utilization of stevia residue in the feed industry. Utility Model Content

[0004] (a) Technical problems to be solved In order to overcome the above-mentioned defects of the prior art, the present invention provides a preparation equipment for enzyme mixed fermentation feed additives, which solves the problems mentioned in the background art, such as low crude fiber degradation efficiency, long fermentation cycle and poor nutrient conversion effect of traditional simple microbial fermentation treatment of stevia residue. Moreover, the existing equipment does not efficiently synergize enzyme treatment and mixed fermentation, and cannot give full play to the advantages of both, thus restricting the efficient utilization of stevia residue in the feed field.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a preparation device for an enzymatic mixed-culture fermentation feed additive, comprising a load-bearing platform and an electrical control box. The upper surface of the load-bearing platform is sequentially arranged from right to left with a pulverizing component, an enzymatic hydrolysis reaction tank, and a fermentation tank. The inner walls of both the enzymatic hydrolysis reaction tank and the fermentation tank are equipped with heating pipes electrically connected to the electrical control box. A transfer hose is detachably connected to the upper end of the enzymatic hydrolysis reaction tank, and a pH adjustment component is detachably connected to the other end of the transfer hose. The outer surfaces of both the enzymatic hydrolysis reaction tank and the fermentation tank are sequentially arranged from top to bottom with multiple heating elements electrically connected to the pH adjustment component. Each pH electrode has one end extending through one side of the enzymatic hydrolysis tank and the fermentation tank into the interior. The upper end of the fermentation tank is equipped with a ventilation component. The interior of both the enzymatic hydrolysis tank and the fermentation tank is equipped with a stirring component of the same structure. The middle of the upper end of both the enzymatic hydrolysis tank and the fermentation tank is equipped with a drive motor of the same structure, and the output end of the drive motor is detachably connected to the upper end of the stirring component. On the outer surface of the fermentation tank away from the pH electrodes, multiple temperature sensors are provided and electrically connected to the electrical control box, and one end of each of the multiple temperature sensors extends into the interior of the fermentation tank.

[0006] Preferably, the pulverizing assembly includes a connecting frame, with a pulverizer electrically connected to the electrical control box mounted on the upper end of the connecting frame. The pulverizer has a feed inlet on its upper end and a discharge outlet on one side. A screening machine is mounted on the upper end of the connecting frame near the pulverizer. A feed hopper is mounted on the upper end of the screening machine, with the upper end of the feed hopper corresponding to the lower end of the discharge outlet. The outer surface of the screening machine has a fine material outlet and a coarse material outlet. The lower end of the fine material outlet is detachably connected to the upper end of the enzymatic hydrolysis reaction vessel.

[0007] Preferably, the pH adjustment assembly includes a pH controller, the upper end of which has a display screen, and a peristaltic pump is detachably connected to one side of the pH controller. The inner wall of the peristaltic pump is detachably connected to the outer surface of the delivery hose.

[0008] Preferably, the lower flange of the enzymatic hydrolysis reactor is connected to an electric gate valve, and the electric gate valve is electrically connected to the electrical control box. The lower end of the electric gate valve is fixedly connected to a first delivery pipe, and the lower end of the first delivery pipe is fixedly connected to a screw pump. The output end of the screw pump is connected to a second delivery pipe through a flange. The other end of the second delivery pipe is connected to the upper flange of the fermenter. A water inlet pipe and a β-cellulase tube are provided on the upper side of the enzymatic hydrolysis reactor near the drive motor. The outer surfaces of the water inlet pipe and the β-cellulase tube are each provided with an electrically controlled valve that is electrically connected to the electrical control box.

[0009] Preferably, the ventilation assembly includes a protective tube, the inner wall of which is provided with a fan electrically connected to the electrical control box, the upper end of which is fixedly connected to an air inlet pipe, and the inner wall of the air inlet pipe is detachably connected to a filter screen.

[0010] Preferably, the stirring assembly includes a stirring shaft, and multiple sets of stirring blades are arranged sequentially from top to bottom on the outer surface of the stirring shaft.

[0011] Preferably, a discharge pipe is fixedly connected to the lower end of the fermenter, and a control valve electrically connected to the electrical control box is provided on the outer surface of the discharge pipe. A compound microbial inlet pipe is provided on the upper end of the fermenter near the drive motor.

[0012] Preferably, a climbing ladder is detachably connected to the side of the load-bearing platform closest to the fermentation tank.

[0013] (III) Beneficial Effects This invention provides a device for preparing enzymatic mixed-culture fermentation feed additives, which has the following beneficial effects: This enzymatic mixed-culture fermentation feed additive preparation equipment, in actual use, utilizes a pulverizing component to further pulverize stevia residue, breaking down large coarse fiber molecules into smaller molecules. This further increases the contact area between the stevia residue molecules and external additives and microorganisms, providing a foundation for efficient subsequent enzymatic hydrolysis and fermentation. The coordinated setup of the enzymatic hydrolysis reactor, heating element, pH adjustment component, and stirring component provides a suitable reaction environment for the stevia residue entering the reactor. The pH adjustment component, through a pH electrode, monitors the pH value inside the reactor in real time and transmits the data to the pH adjustment component, precisely adjusting the pH value to maintain it within a suitable range. This solves the problem of reduced enzyme activity caused by pH fluctuations. Simultaneously, the stirring component also agitates the stevia residue and other additives in the reactor, ensuring they are fully mixed. The process involves mixing the stevia residue with other additives to ensure uniform contact, accelerating the reaction time and significantly improving its enzymatic hydrolysis efficiency. This provides ample small-molecule nutrients for the fermentation process. After the enzymatically pretreated stevia residue enters the fermenter, the temperature inside is precisely controlled through the coordinated setup of the fermenter, heating elements, and temperature sensors. Sufficient aeration and stirring are provided within the fermenter, creating an ideal growth environment for microorganisms, accelerating microbial reproduction and metabolism, and significantly shortening the fermentation cycle. This solves the problem of excessively long fermentation times in traditional methods. During this process, the enzymatic pretreatment degrades some crude fiber, reducing the burden on the fermentation stage, while fermentation further transforms the enzymatic hydrolysis products, achieving a highly efficient synergy between enzymatic treatment and mixed-culture fermentation. This fully unlocks the nutritional potential of stevia residue and promotes its efficient utilization in the feed industry. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the crushing component structure of this utility model; Figure 3 This is a schematic diagram of the screw pump structure of this utility model; Figure 4 This is a schematic diagram of the enzymatic hydrolysis reaction vessel of this utility model; Figure 5 This is a schematic diagram of the fermenter structure of this utility model; Figure 6 This is a schematic diagram of the ventilation component structure of this utility model; Figure 7 This is a schematic diagram of the pH adjustment component of this utility model.

[0015] In the diagram: 1. Loading platform; 2. Electrical control box; 3. Crushing assembly; 301. Connecting frame; 302. Crusher; 303. Feed inlet; 304. Discharge outlet; 305. Screening machine; 306. Feed hopper; 307. Fine material outlet; 308. Coarse material outlet; 4. Enzymatic hydrolysis reactor; 5. Fermentation tank; 6. Heating element; 7. Transfer hose; 8. pH adjustment assembly; 801. pH controller; 802. Display screen; 803. Peristaltic pump; 9. pH electrode; 10. Ventilation assembly; 01. Protective pipe; 1002. Fan; 1003. Air inlet pipe; 1004. Filter screen; 11. Stirring assembly; 1101. Stirring shaft; 1102. Stirring blades; 12. Drive motor; 13. Temperature sensor; 14. Electric gate valve; 15. First conveying pipe; 16. Screw pump; 17. Second conveying pipe; 18. Water inlet pipe; 19. β-cellulase pipe; 20. Electrically controlled valve; 21. Discharge pipe; 22. Control valve; 23. Climbing ladder; 24. Compound microbial inlet pipe. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0017] Example 1: Please refer to Figure 1 , Figure 4 , Figure 5 and Figure 6This utility model provides a technical solution: a preparation device for an enzymatic mixed-culture fermentation feed additive, comprising a load platform 1 and an electrical control box 2. The upper surface of the load platform 1 is arranged from right to left with a pulverizing component 3, an enzymatic hydrolysis reaction tank 4, and a fermentation tank 5. The inner walls of both the enzymatic hydrolysis reaction tank 4 and the fermentation tank 5 are equipped with heating pipes 6 electrically connected to the electrical control box 2. A transfer hose 7 is detachably connected to the upper end of the enzymatic hydrolysis reaction tank 4, and a pH adjustment component 8 is detachably connected to the other end of the transfer hose 7. The outer surfaces of both the enzymatic hydrolysis reaction tank 4 and the fermentation tank 5 are arranged from top to bottom with... Multiple pH electrodes 9 are electrically connected to the pH adjustment component 8, with one end of each pH electrode 9 extending through one side of the enzymatic hydrolysis reactor 4 and the fermentation tank 5 into the interior. A discharge pipe 21 is fixedly connected to the lower end of the fermentation tank 5, and a control valve 22 electrically connected to the electrical control box 2 is installed on the outer surface of the discharge pipe 21. An aeration component 10 is installed at the upper end of the fermentation tank 5, including a protective pipe 1001. A fan 1002 electrically connected to the electrical control box 2 is installed on the inner wall of the protective pipe 1001. An inlet valve is fixedly connected to the upper end of the protective pipe 1001. The air inlet pipe 1003 has a filter screen 1004 detachably connected to its inner wall. Both the enzymatic hydrolysis reactor 4 and the fermentation tank 5 are equipped with identical stirring components 11. Each stirring component 11 includes a stirring shaft 1101, with multiple sets of stirring blades 1102 arranged sequentially from top to bottom on its outer surface. Both the enzymatic hydrolysis reactor 4 and the fermentation tank 5 have identical drive motors 12 located at their upper center, and the output end of the drive motor 12 is detachably connected to the upper end of the stirring component 11. The outer surface of the fermentation tank 5 is furthest from the pH electrode 9. A plurality of temperature sensors 13 are provided on one side and electrically connected to the control box 2, and one end of each of the multiple temperature sensors 13 is inserted into the interior of the fermenter 5. A climbing ladder 23 is detachably connected to the side of the load platform 1 near the fermenter 5. A compound microbial inlet pipe 24 is provided on the side of the upper end of the fermenter 5 near the drive motor 12. A water inlet pipe 18 and a β-cellulase pipe 19 are provided on the side of the upper end of the enzymatic reaction tank 4 near the drive motor 12. An electric control valve 20 electrically connected to the control box 2 is provided on the outer surface of the water inlet pipe 18 and the β-cellulase pipe 19. Through the above technical solution, the drive motors 12, located at the upper middle part of the enzymatic hydrolysis reaction tank 4 and the fermentation tank 5, both penetrate one side of the enzymatic hydrolysis reaction tank 4 and the fermentation tank 5. Their output ends are detachably connected to one end of the stirring shaft 1101 in the stirring assembly 11. Therefore, the driving force generated by the drive motors 12 can drive the stirring shaft 1101 and the stirring blades 1102 to rotate, stirring the inside of the enzymatic hydrolysis reaction tank 4 and the fermentation tank 5 to ensure thorough mixing of the materials. The heating pipe 6 can heat the inside of the enzymatic hydrolysis reaction tank 4 and the fermentation tank 5, bringing them to a suitable temperature for reaction and fermentation. The composite microbial inlet pipe 24 located at the upper end of the fermentation tank 5 can introduce external composite microbial cultures. The mixture is fed into the fermentation tank 5, where it is stirred by the stirring shaft 1101 and stirring blades 1102 to ensure thorough mixing and fermentation of the compound microbial culture and stevia residue. A temperature sensor 13 on the side of the fermentation tank 5 monitors the internal temperature. This temperature sensor, in conjunction with the electrical control box 2 and heating element 6, regulates the internal temperature of the fermentation tank 5, maintaining it within a suitable range. The protective tube 1001 in the ventilation assembly 10 at the top of the fermentation tank 5 acts as a protective outer shell, encasing the internal fan 1002 to prevent material splashing into the fan during fermentation and causing malfunctions. It also provides a channel for air circulation, while the fan 1002 serves as the power source for air delivery. Outside air is drawn into fermentation tank 5 to provide sufficient oxygen for various microorganisms, meeting their metabolic needs and preventing fermentation stagnation or the growth of unwanted microorganisms due to oxygen deficiency. The filter 1004 inside the air inlet pipe 1003 removes dust and unwanted microorganisms from the air, preventing them from entering fermentation tank 5 and thus preventing external contamination that could affect fermentation efficiency and ensure the quality of the feed additive. Both the enzymatic hydrolysis tank 4 and fermentation tank 5 are equipped with pH electrodes 9 on their sides, with one end extending into the interior of both tanks. This allows for real-time monitoring of the internal pH of both tanks. When the pH value inside enzymatic hydrolysis tank 4 falls below a preset value, the pH adjustment component 8 adjusts the pH level inside the tank. When the pH value inside fermenter 5 is lower than the preset value, it indicates that fermentation is complete. After the stevia residue enters the enzymatic hydrolysis tank 4, the water inlet pipe 18 at the top of the enzymatic hydrolysis tank 4 can inject process water into the enzymatic hydrolysis tank 4 to adjust the solid-liquid ratio of the material and provide a suitable liquid phase environment for the enzymatic hydrolysis reaction. The β-cellulase tube 19 can precisely inject β-cellulase into the enzymatic hydrolysis tank 4. The electric control valve 20 controls the enzyme entering the enzymatic hydrolysis tank 4. At the same time, the electric control valve 20 can also control the shut-off of the water inlet pipe 18, thereby controlling the water entering the enzymatic hydrolysis tank 4. The climbing ladder 23 makes it easy for workers to climb to the top of fermenter 5 for equipment maintenance. In practical applications, the compound microbial strains, solid-liquid ratio, and component parameters can be flexibly set according to the raw material characteristics and processing scale of stevia residue. For example, to meet the microbial requirements of the fermentation stage, the compound microbial strains introduced into fermenter 5 can be yeast, lactic acid bacteria, and Bacillus subtilis, configured in a 2:2:1 ratio. This ratio allows yeast to convert small-molecule sugars into nutrients, lactic acid bacteria to maintain a slightly acidic environment in the fermentation system, and Bacillus subtilis to further degrade residual crude fiber. The three synergistically improve nutrient conversion efficiency, resulting in a higher yield of enzymatically hydrolyzed material. The material is fed into fermentation tank 5, and inoculated with compound microbial strains at 3%-5% of the weight of stevia residue powder. For the liquid entering enzymatic hydrolysis tank 4, the solid-liquid ratio of the material can be maintained at 1:6. The amount of β-cellulase added is 1.5% of the weight of the stevia residue powder. In terms of parameter settings, the stirring speed is set to 100-200 r / min and the time is set to 2-4 hours via the electrical control box 2. This ensures that the stirring blades 1102 continuously and uniformly stir within enzymatic hydrolysis tank 4 and fermentation tank 5, guaranteeing sufficient enzymatic hydrolysis and fermentation. During the enzymatic hydrolysis stage, the stevia residue powder, β-cellulase, and water... Sufficient contact is ensured to avoid uneven degradation caused by localized enzyme concentrations. During fermentation, this promotes uniform mixing of the complex microorganisms and substrate, preventing material clumping and providing the necessary power for the enzymatic hydrolysis and fermentation process. Setting the temperature of the heating tube 6 on the inner wall of the enzymatic hydrolysis tank 4 to 50-60℃ provides the optimal temperature for β-cellulase, maximizing its catalytic efficiency and accelerating the degradation of crude fiber. Meanwhile, setting the temperature of the heating tube 6 on the inner wall of the fermentation tank 5 to 28-30℃ provides an ideal growth and reproduction environment for the complex microorganisms, promoting their metabolism and nutrient absorption. To shorten the fermentation cycle, the ventilation parameters of the aeration component 10 are set to 2-3 times a day for 30 minutes each time. This setting can precisely match the respiratory needs of the compound strains, providing sufficient oxygen to maintain their activity while avoiding energy waste caused by excessive ventilation. The pH value in the enzymatic reaction tank 4 is controlled within the range of 4.5-5.5, which is the acid-base environment in which β-cellulase exerts its best catalytic effect. This can effectively avoid the problem of reduced enzyme activity caused by pH deviation, ensuring stable crude fiber degradation efficiency and providing high-quality small molecule nutrient substrates for subsequent fermentation stages.

[0018] Please see Figure 1 , Figure 3 and Figure 7An electric gate valve 14 is connected to the lower flange of the enzymatic hydrolysis reaction tank 4, and the electric gate valve 14 is electrically connected to the electrical control box 2. A first delivery pipe 15 is fixedly connected to the lower end of the electric gate valve 14, and a screw pump 16 is fixedly connected to the lower end of the first delivery pipe 15. The output end of the screw pump 16 is connected to a second delivery pipe 17 through a flange. The other end of the second delivery pipe 17 is connected to the upper flange of the fermentation tank 5. The pH adjustment assembly 8 includes a pH controller 801. A display screen 802 is opened at the upper end of the pH controller 801. A peristaltic pump 803 is detachably connected to one side of the pH controller 801. The inner wall of the peristaltic pump 803 is detachably connected to the outer surface of the transmission hose 7. Through the above technical solution, the electric gate valve 14 is controlled by the electrical control box 2. It opens after enzymatic hydrolysis is completed, allowing stevia residue to enter the first conveying pipe 15. It closes during enzymatic hydrolysis inside the enzymatic reaction tank 4 to prevent material leakage. The first conveying pipe 15 can send the stevia residue into the screw pump 16. The rotation of the screw pump 16 generates negative pressure, drawing the material from the first conveying pipe 15. It is then pressurized and sent into the fermentation tank 5 through the second conveying pipe 17. At the same time, when the pH value inside the enzymatic reaction tank 4 is lower than the preset value during the reaction, data will be transmitted. The pH controller 801 responds quickly and controls the peristaltic pump 803 to start. The peristaltic pump 803 delivers a preset dose of pH adjuster to the enzymatic reaction vessel 4 by squeezing the delivery hose 7. As the adjuster is added, the pH value inside the vessel gradually returns to the appropriate range. The pH electrode 9 continuously monitors and feeds back data until the pH stabilizes. Then, the pH controller 801 instructs the peristaltic pump 803 to stop running. The entire process achieves automated and precise pH adjustment, providing a stable acid-base environment for β-cellulase to exert its best activity.

[0019] Example 2: Please refer to Figure 1 and Figure 2 This utility model provides a technical solution based on Embodiment 1. The crushing component 3 includes a connecting frame 301. A crusher 302 electrically connected to the electrical control box 2 is provided at the upper end of the connecting frame 301. A feed inlet 303 is provided at the upper end of the crusher 302. A discharge outlet 304 is provided on one side of the crusher 302. A screening machine 305 is provided at the upper end of the connecting frame 301 near the crusher 302. A feed hopper 306 is provided at the upper end of the screening machine 305, and the upper end of the feed hopper 306 is correspondingly provided to the lower end of the discharge outlet 304. A fine material outlet 307 and a coarse material outlet 308 are provided on the outer surface of the screening machine 305. The lower end of the fine material outlet 307 is detachably connected to the upper end of the enzymatic hydrolysis reaction tank 4. Through the above technical solution, after the external stevia residue is fed into the feed inlet 303, it is further crushed by the internal crushing structure of the crusher 302. This breaks down the complex structure of coarse fiber aggregates in the stevia residue, increases the specific surface area, and creates conditions for sufficient contact between β-cellulase during subsequent enzymatic hydrolysis and the complex microorganisms during fermentation. This solves the problem of insufficient processing caused by large raw material particle size. After crushing, the stevia residue is fed into the feed hopper 306 through the discharge outlet 304. The funnel-shaped structure of the feed hopper 306 guides the material evenly into the screening machine 305, preventing material blockage at the inlet of the screening machine 305 and ensuring screening efficiency. At the same time, the screening machine 305 can classify the crushed stevia residue, screening out powder with uniform and qualified particle size, which enters the enzymatic hydrolysis reaction tank 4 through the fine material outlet 307. Meanwhile, the coarse material with excessive particle size is discharged from the coarse material outlet 308, ensuring that the raw material entering the subsequent process has a consistent particle size and avoiding uneven enzymatic hydrolysis and fermentation due to particle size differences.

[0020] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power via standard interfaces. The main controller can be any commercially available known device. There are no special restrictions on the specific models of the electrical components; any commercially available ordinary products can be selected, as long as they meet the usage requirements of this utility model.

[0021] In this invention, the working steps of the device are as follows: First, stevia residue is fed into the crusher 302 through the feed inlet 303. The crusher 302 is started under the control of the electrical control box 2, crushing the stevia residue to break down the coarse fiber aggregate structure. The crushed material enters the feed hopper 306 of the screening machine 305 through the discharge outlet 304. The screening machine 305 classifies and screens the material. The qualified fine material enters the enzymatic hydrolysis reaction tank 4 through the fine material outlet 307, while the coarse material is discharged and recycled from the coarse material outlet 308. The electrical control box 2 controls the opening of the electrically controlled valves 20 of the water inlet pipe 18 and the β-cellulase pipe 19, adding water according to the preset value. The enzymatic hydrolysis system is prepared by combining β-cellulase and the operating parameters of the enzymatic hydrolysis reaction tank 4 are preset by the electrical control box 2. The heating element 6 and the drive motor 12 are then started. The drive motor 12 drives the stirring shaft 1101 and the stirring blades 1102 to rotate, so that the stevia residue, enzyme preparation and water are fully mixed. The pH electrode 9 monitors the pH value in the tank in real time. If it deviates from the preset range, the pH controller 801 starts the peristaltic pump 803 and accurately injects the pH adjuster through the transmission hose 7 to maintain a stable acid-base environment. After the enzymatic hydrolysis reaction is completed, the electrical control box 2 commands the electric gate valve 14 to... After the enzyme hydrolysis process is initiated, the material enters the first conveying pipe 15. The screw pump 16 starts, drawing in and pressurizing the material through negative pressure. The material is then precisely conveyed to the fermentation tank 5 via the second conveying pipe 17. Compound microbial culture is introduced into the fermentation tank 5 through the compound microbial culture inlet pipe 24. The electrical control box 2 presets the operating parameters of the fermentation tank 5. After the settings are completed, the drive motor 12 is started. The drive motor 12 drives the stirring shaft 1101 and stirring blades 1102 to rotate, stirring the material in the tank and ensuring uniform contact between the microbial culture and the enzymatically hydrolyzed material, promoting nutrient conversion. The temperature sensor 13 monitors the temperature in real time. The temperature inside the tank is controlled in a closed loop with the heating tube 6 to maintain a constant temperature environment. The ventilation component 10 operates according to the set program. The negative pressure fan 1002 draws in air through the protective tube 1001, which is then purified by the filter screen 1004 in the air inlet pipe 1003 and sent into the tank to provide oxygen for the bacteria. The pH electrode 9 monitors the pH value of the fermentation system. When the pH drops below 4.5, the fermentation is considered complete. The electrical control box 2 instructs the control valve 22 on the discharge pipe 21 to open, and the fermented feed additive is output through the discharge pipe 21 to enter the subsequent drying, packaging and other processes.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A preparation device for an enzymatic mixed-culture fermentation feed additive, comprising a load-bearing platform (1) and an electrical control box (2), characterized in that: The upper surface of the load platform (1) is provided with a pulverizing component (3), an enzymatic hydrolysis reaction tank (4), and a fermentation tank (5) from right to left. The inner walls of the enzymatic hydrolysis reaction tank (4) and the fermentation tank (5) are provided with heating tubes (6) electrically connected to the electrical control box (2). The upper end of the enzymatic hydrolysis reaction tank (4) is detachably connected to a transmission hose (7), and the other end of the transmission hose (7) is detachably connected to a pH adjustment component (8). The outer surfaces of the enzymatic hydrolysis reaction tank (4) and the fermentation tank (5) are provided with multiple pH electrodes (9) electrically connected to the pH adjustment component (8) from top to bottom. One end of each of the multiple pH electrodes (9) penetrates the enzymatic hydrolysis reaction tank (4) and the fermentation tank (5). One side of the tank (5) extends into the interior. The upper end of the fermentation tank (5) is provided with an aeration component (10). The interior of both the enzymatic reaction tank (4) and the fermentation tank (5) is provided with a stirring component (11) of the same structure. The middle of the upper end of both the enzymatic reaction tank (4) and the fermentation tank (5) is provided with a drive motor (12) of the same structure. The output end of the drive motor (12) is detachably connected to the upper end of the stirring component (11). On the outer surface of the fermentation tank (5) away from the pH electrode (9), a plurality of temperature sensors (13) electrically connected to the electrical control box (2) are provided. One end of each of the plurality of temperature sensors (13) penetrates into the interior of the fermentation tank (5).

2. The equipment for preparing an enzymatic mixed-culture fermentation feed additive according to claim 1, characterized in that: The pulverizing assembly (3) includes a connecting frame (301). The upper end of the connecting frame (301) is provided with a pulverizer (302) electrically connected to the electrical control box (2). The upper end of the pulverizer (302) is provided with a feed inlet (303). The side of the pulverizer (302) is provided with a discharge outlet (304). The upper end of the connecting frame (301) is provided with a screening machine (305) near the side of the pulverizer (302). The upper end of the screening machine (305) is provided with a feed hopper (306), and the upper end of the feed hopper (306) is correspondingly provided with the lower end of the discharge outlet (304). The outer surface of the screening machine (305) is provided with a fine material outlet (307) and a coarse material outlet (308). The lower end of the fine material outlet (307) is detachably connected to the upper end of the enzymatic hydrolysis reaction tank (4).

3. The equipment for preparing an enzymatic mixed-culture fermentation feed additive according to claim 1, characterized in that: The pH adjustment component (8) includes a pH controller (801), with a display screen (802) at the upper end of the pH controller (801). A peristaltic pump (803) is detachably connected to one side of the pH controller (801), and the inner wall of the peristaltic pump (803) is detachably connected to the outer surface of the transmission hose (7).

4. The equipment for preparing an enzymatic mixed-culture fermentation feed additive according to claim 1, characterized in that: The lower flange of the enzymatic hydrolysis reaction tank (4) is connected to an electric gate valve (14), and the electric gate valve (14) is electrically connected to the electrical control box (2). The lower end of the electric gate valve (14) is fixedly connected to a first delivery pipe (15), and the lower end of the first delivery pipe (15) is fixedly connected to a screw pump (16). The output end of the screw pump (16) is connected to a second delivery pipe (17) through a flange. The other end of the second delivery pipe (17) is connected to the upper flange of the fermentation tank (5). The upper end of the enzymatic hydrolysis reaction tank (4) near the drive motor (12) is provided with a water inlet pipe (18) and a β-cellulase tube (19). The outer surfaces of the water inlet pipe (18) and the β-cellulase tube (19) are both provided with an electric control valve (20) electrically connected to the electrical control box (2).

5. The equipment for preparing an enzymatic mixed-culture fermentation feed additive according to claim 1, characterized in that: The ventilation assembly (10) includes a protective tube (1001), the inner wall of which is provided with a fan (1002) electrically connected to the electrical control box (2), the upper end of which is fixedly connected with an air inlet pipe (1003), and the inner wall of the air inlet pipe (1003) is detachably connected with a filter screen (1004).

6. The equipment for preparing an enzymatic mixed-culture fermentation feed additive according to claim 1, characterized in that: The stirring assembly (11) includes a stirring shaft (1101), and multiple sets of stirring blades (1102) are arranged sequentially from top to bottom on the outer surface of the stirring shaft (1101).

7. The equipment for preparing an enzymatic mixed-culture fermentation feed additive according to claim 1, characterized in that: The lower end of the fermenter (5) is fixedly connected to a discharge pipe (21), and the outer surface of the discharge pipe (21) is provided with a control valve (22) that is electrically connected to the electrical control box (2). The upper end of the fermenter (5) is provided with a compound microbial inlet pipe (24) on the side close to the drive motor (12).

8. The equipment for preparing an enzymatic mixed-culture fermentation feed additive according to claim 1, characterized in that: The loading platform (1) is detachably connected to a climbing ladder (23) on the side near the fermentation tank (5).

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