Sterilization and fermentation system for preparing low-fat cream

Abstract

The invention relates to the field of dairy product processing, and discloses a sterilization and fermentation system for low-fat cream preparation, which comprises a support plate, the bottom of the support plate is fixedly connected with a plurality of bases, the top of the support plate is fixedly connected with a plurality of sterilization bins, the rear side of the base is provided with a steam direct injection mixer, and the steam direct injection mixer is provided with a steam outlet. The output end of the steam direct injection mixer is fixedly connected with a conveying pipe, one side of the inner wall of the sterilization bin is rotatably connected with a rotating cylinder, one side of the rotating cylinder is provided with a rotating shaft, one end of the top of the conveying pipe is installed on the inner wall of the rotating shaft, the inner wall of the conveying pipe is rotatably connected with a rotating rod, and the outer wall of the rotating rod is fixedly connected with a plurality of turbofans. And a cooling assembly is arranged on the outer wall of the rotating rod. Steam output by the steam direct injection mixer serves as a power source to push the turbofan on the rotating rod to rotate at a high speed, uniform stirring, efficient sterilization and rapid cooling of feed liquid are achieved, and complexity and overall energy consumption of equipment are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of dairy product processing, in particular to a sterilization and fermentation system for preparing low-fat cream. Background Art

[0002] Low-fat cream is a dairy product with a low fat content, usually between 10% and 30%, which is much lower than the 35% to 40% of traditional cream. Due to its low fat content, low-fat cream is more suitable for health-conscious consumers, especially those who focus on controlling fat intake and cardiovascular health. In the food industry, low-fat cream is widely used in baking, beverages, desserts, sauces and other fields. It can provide a rich milky flavor while avoiding the calorie burden brought by high-fat cream. However, due to the low fat content of low-fat cream, there are some technical difficulties in its processing in terms of homogeneity, flavor retention and bacterial fermentation efficiency.

[0003] The processing of traditional low-fat cream requires high-temperature sterilization of the raw materials to kill harmful microorganisms in dairy products and ensure the safety of the products. However, the existing technology usually uses independent sterilization and stirring equipment, which is complex and energy-intensive. In particular, when the sterilization equipment cannot achieve uniform heat distribution, it may cause insufficient or overheating of the local liquid, affecting the sterilization effect and product quality. In addition, the separate operation of stirring and sterilization will increase the complexity of the process flow and reduce production efficiency.

[0004] Then, during the production of sterilized low-fat cream, the liquid needs to be quickly cooled to a temperature range suitable for the growth of fermentation bacteria (usually 35-42°C). Traditional cooling methods usually use cooling water baths or simple heat exchangers, which have low cooling efficiency and are prone to temperature unevenness. In addition, too long cooling time will delay the start of the fermentation process, affecting overall production efficiency, and may cause stratification of milk fat and other solid components, affecting the texture and uniformity of the low-fat cream.

[0005] In addition, the fermentation of low-fat cream requires the metabolism of fermentation bacteria such as lactic acid bacteria to adjust its acidity, texture and flavor. However, fermentation equipment in the prior art usually uses simple or mechanical stirring to provide oxygen, but the dissolution efficiency of oxygen in the fermentation liquid is low, which easily leads to the phenomenon of limited bacterial metabolism during the fermentation process. In addition, due to the uneven distribution of oxygen, the activity of the bacteria is difficult to ensure, which affects the fermentation speed and the flavor stability of the product. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a sterilization and fermentation system for preparing low-fat cream, which solves the problems of sterilization uniformity, cooling efficiency and insufficient fermentation oxygen supply in low-fat cream processing in the prior art.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a sterilization and fermentation system for preparing low-fat cream, comprising a support plate, a plurality of bases are fixedly connected to the bottom of the support plate, a plurality of sterilization chambers are fixedly connected to the top of the support plate, a steam direct injection mixer is installed on the rear side of the base, a delivery pipe is fixedly connected to the output end of the steam direct injection mixer, a rotating drum is rotatably connected to one side of the inner wall of the sterilization chamber, a rotating shaft is installed on one side of the rotating drum, one end of the top of the delivery pipe is installed on the inner wall of the rotating shaft, a rotating rod is rotatably connected to the inner wall of the delivery pipe, and the rotating rod A plurality of turbofans are fixedly connected to the outer wall of the rod, a cooling component is provided on the outer wall of the rotating rod, a middle plate is fixedly connected to the adjacent side of the two bases, a rotating rod is rotatably connected to the inner wall of the middle plate, a plurality of fan blades are fixedly connected to the outer wall of the rotating rod, a sterile filter is installed on one side of the middle plate, a solenoid valve is fixedly connected to the top of the middle plate, an air pipe is fixedly connected to the inner wall of the solenoid valve, a fermentation tank is installed on the top of the base, a bubble plate is provided on the inner wall of the fermentation tank, the air pipe is communicated with the inner wall of the bubble plate, and a transmission component is fixedly connected to the top of the support plate.

[0008] Preferably, the cooling component includes a positioning plate, which is fixedly connected to the top of the middle plate, a plurality of copper plates are fixedly connected to the bottom of the support plate, a serpentine tube is fixedly connected to the inner wall of the copper plate, a driving gear is fixedly connected to the outer wall of the rotating rod, an idle gear is rotatably connected to one side of the top of the middle plate, and a cooling fan is fixedly connected to the top of the idle gear.

[0009] Preferably, a plurality of stirring rods are fixedly connected to the outer wall of the rotating drum, a plurality of nozzles are arranged on the outer wall of the rotating drum, and a feed flange is installed on one side of the sterilization chamber.

[0010] Preferably, a second bevel gear is fixedly connected to one side of the rotating rod, a first bevel gear is fixedly connected to the bottom of the rotating rod, and the first bevel gear is meshingly connected to the second bevel gear.

[0011] Preferably, the idle gear is meshingly connected with the driving gear, and the gear ratio between the driving gear and the idle gear is 1:4.

[0012] Preferably, the idle gear, the driving gear, the first bevel gear and the second bevel gear are all made of polyetheretherketone.

[0013] Preferably, the transmission assembly includes a motor, the motor is fixedly connected to the top of the support plate, the output end of the motor is fixedly connected to a second pulley, one side of the second pulley is fixedly connected to a third pulley, and one side of the outer wall of the rotating drum is fixedly connected to the first pulley.

[0014] Preferably, one of the first pulleys is connected to the second pulley via a belt, and one of the first pulleys is connected to the third pulley via a belt.

[0015] Preferably, one end of the serpentine tube is communicated with the inner walls of a plurality of sterilization chambers respectively, and one end of the serpentine tube is communicated with the inner wall of the fermentation tank.

[0016] Preferably, a bacteria injection tube is provided at the front end of the outer wall of the fermenter, and a discharge pipe is provided at one end of the fermenter.

[0017] Working principle: When using this device to sterilize and ferment low-fat cream, first, pour the material to be sterilized into the sterilization chamber through the connection of the feed flange, then turn on the motor, and drive the second pulley and the third pulley to connect the rotating drum fixed by the first pulleys on both sides with belts, thereby achieving stirring of the material in the sterilization chamber, and in the process of slow stirring, high-temperature steam is output through the steam direct injection mixer, and the high-temperature steam is evenly output to the inner wall of the sterilization chamber through the nozzle through the hollow inner wall of the rotating drum, thereby completing the sterilization of the material.

[0018] After the sterilization process is completed, the sterilized material in the sterilization chamber can be sucked into the fermentation tank through the serpentine tube by controlling the circulation pump set on one side of the serpentine tube. In the process again, the steam direct injection mixer is always in the open state. When the high-temperature pressure gas enters the inner wall of the sterilization chamber through the delivery pipe to achieve sterilization, it will drive multiple turbofans to drive the rotating rod to rotate, and during the rotation process, it will synchronously drive the driving gear and the idler gear to generate a meshing connection, thereby driving the cooling fan to rotate and generate wind force, thereby completing air cooling of the material passing through the inner wall of the serpentine tube.

[0019] In addition, during the fermentation process in the fermenter, the air discharged into the bubble plate through the fan blades can provide oxygen to the fermentation bacteria inside the fermenter, and the fermentation effect of low-fat cream can be improved through the micro-bubble effect, shortening the fermentation time and improving the overall efficiency. After the fermentation is completed, it can be discharged through the discharge pipe on one side of the fermenter. In the whole process, sterilization and fermentation can be carried out at the same time.

[0020] The present invention provides a sterilization and fermentation system for preparing low-fat cream. It has the following beneficial effects: 1. The present invention uses the steam output by the steam direct injection mixer as a power source to drive the turbofan on the rotary rod to rotate at high speed, and distributes the power to functional components such as the drum, stirring rod and cooling fan through a gear transmission system, thereby achieving uniform stirring of the liquid, efficient sterilization and rapid cooling, reducing the complexity of the equipment and the overall energy consumption.

[0021] 2. The present invention realizes rapid cooling of the sterilized liquid by setting a cooling component, including a serpentine tube, a copper plate and a cooling fan, combined with a power transmission component. Such a design not only utilizes the air-cooling effect, but also extends the heat exchange path through the serpentine tube, significantly improves the cooling efficiency, and effectively shortens the fermentation preparation time.

[0022] 3. The present invention can significantly improve the solubility of oxygen in the fermentation liquid and optimize the metabolic environment of the fermentation bacteria through the coordinated use of components such as bubble plates and fan blades; at the same time, due to the surface tension of the microbubbles and the tiny impact force when the bubbles collapse, the surface of the fermentation bacteria can be stimulated, the activity and fermentation efficiency of the bacteria can be improved, the fermentation time can be shortened, and the flavor stability and uniformity of the product can be enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the present invention; Figure 2 It is a rear view structural schematic diagram of the present invention; Figure 3 It is an exploded schematic diagram of the neat direct injection mixer structure of the present invention; Figure 4 It is a schematic diagram of the motor structure of the present invention; Figure 5 It is a schematic diagram of the cross-sectional structure of the sterilization chamber of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the middle plate of the present invention; Figure 7 for Figure 6 A magnified schematic diagram of point A; Figure 8 It is a schematic diagram of the copper plate structure of the present invention; Fig. 9 It is a schematic diagram of the explosion of the bubble plate structure of the present invention.

[0024] Among them, 1. base; 2. support plate; 3. sterilization chamber; 4. steam direct injection mixer; 5. delivery pipe; 6. rotating rod; 7. turbofan; 8. rotating drum; 9. stirring rod; 10. nozzle; 11. feed flange; 12. rotating shaft; 13. first pulley; 14. motor; 15. second pulley; 16. third pulley; 17. middle plate; 18. sterile filter; 19. rotating rod; 20. fan blade; 21. solenoid valve; 22. fermentation tank; 23. gas delivery pipe; 24. first bevel gear; 25. second bevel gear; 26. driving gear; 27. cooling fan; 28. idler gear; 29. ​​positioning plate; 30. copper plate; 31. serpentine tube; 32. bubble plate. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Please see attached Figure 1 -Attached Figure 3 The embodiment of the present invention provides a sterilization and fermentation system for preparing low-fat cream, comprising a support plate 2, a plurality of bases 1 are fixedly connected to the bottom of the support plate 2, a plurality of sterilization chambers 3 are fixedly connected to the top of the support plate 2, a steam direct injection mixer 4 is installed on the rear side of the base 1, a delivery pipe 5 is fixedly connected to the output end of the steam direct injection mixer 4, a rotating drum 8 is rotatably connected to one side of the inner wall of the sterilization chamber 3, a rotating shaft 12 is installed on one side of the rotating drum 8, a top end of the delivery pipe 5 is installed on the inner wall of the rotating shaft 12, and the inner wall of the delivery pipe 5 A rotating rod 6 is rotatably connected, and a plurality of turbofans 7 are fixedly connected to the outer wall of the rotating rod 6. A cooling component is arranged on the outer wall of the rotating rod 6. A middle plate 17 is fixedly connected to the adjacent side of the two bases 1. A rotating rod 19 is rotatably connected to the inner wall of the middle plate 17, and a plurality of fan blades 20 are fixedly connected to the outer wall of the rotating rod 19. A sterile filter 18 is installed on one side of the middle plate 17. A solenoid valve 21 is fixedly connected to the top of the middle plate 17, and a gas pipe 23 is fixedly connected to the inner wall of the solenoid valve 21. A fermentation tank 22 is installed on the top of the base 1.

[0027] Please see attached Fig. 9 The inner wall of the fermentation tank 22 is provided with a bubble plate 32, the air delivery pipe 23 is connected to the inner wall of the bubble plate 32, the front end of the outer wall of the fermentation tank 22 is provided with a bacteria injection tube, and one end of the fermentation tank 22 is provided with a discharge pipe.

[0028] A second bevel gear 25 is fixedly connected to one side of the rotating rod 19, and a first bevel gear 24 is fixedly connected to the bottom of the rotating rod 6. The first bevel gear 24 is meshed with the second bevel gear 25, and the idler gear 28 is meshed with the driving gear 26. The gear ratio of the driving gear 26 to the idler gear 28 is 1:4.

[0029] Specifically, the bottom of the support plate 2 is connected to a plurality of bases 1 by a fixed connection to provide support for the entire device. A plurality of sterilization chambers 3 are fixedly connected to the top of the support plate 2, each of which is used to contain raw materials and sterilize them. A steam direct injection mixer 4 is installed on the rear side of the base 1, and the output end of the steam direct injection mixer 4 is connected to a delivery pipe 5 by a fixed connection to transmit high-temperature steam into the sterilization chamber 3 for sterilization and gas power supply.

[0030] One end of the top of the delivery pipe 5 is mounted on the rotating shaft 12 of the drum 8 in the sterilization chamber 3, and one side of the drum 8 is fixedly connected with the rotating shaft 12, which enables the introduction of high-temperature steam and transfers it to the drum 8. The drum 8 can rotate around its central axis to drive the raw materials inside the sterilization chamber 3 to stir, ensure uniform distribution of steam, avoid sterilization dead corners, and improve the sterilization effect.

[0031] The inner wall of the delivery pipe 5 is rotatably connected to a rotary rod 6, and the outer wall of the rotary rod 6 is fixedly connected to a plurality of turbofans 7. When steam enters the delivery pipe 5, the high-speed airflow drives the turbofan 7 to rotate, and the rotating turbofan 7 drives the overall power transmission through the rotary rod 6, generating additional airflow disturbance, so that the heat distribution in the sterilization chamber 3 is more uniform. In addition, the outer wall of the rotary rod 6 is provided with a cooling component, which can assist in cooling the material liquid through the transmission relationship between the active and idle gears 28, reduce the temperature of the sterilized material, and provide suitable conditions for the subsequent fermentation stage.

[0032] Please see attached Figure 6 -Attached Figure 7 , a middle plate 17 is fixedly connected to one side of the two bases 1, and the middle plate 17 plays the role of structural support and transmission component installation. The inner wall of the middle plate 17 is rotatably connected to a rotating rod 19, and the outer wall of the rotating rod 19 is fixedly connected to a plurality of fan blades 20. Driven by high-pressure gas, the rotating rod 19 is meshed and connected with the rotating rod 6 through the first bevel gear 24 and the second bevel gear 25, and the rotation of the rotating rod 6 is transmitted to the rotating rod 19, thereby driving the fan blades 20 to rotate, and further realizing the generation of cooling airflow. The cooling airflow acts on the inner wall of the serpentine tube 31 to ensure that the sterilized material can be quickly cooled down during the process of being transported to the fermentation tank 22 through the serpentine tube 31, thereby avoiding the influence of high temperature on the activity of the fermentation bacteria.

[0033] A sterile filter 18 is installed on one side of the middle plate 17. The sterile filter 18 ensures that the air or gas entering the system is in a sterile state by removing impurities and microorganisms in the air flow, so as to maintain high-quality sanitary conditions during the fermentation stage. A solenoid valve 21 is fixedly connected to the top of the middle plate 17, and a gas pipe 23 is fixedly connected to the inner wall of the solenoid valve 21. The gas pipe 23 is connected to the bubble plate 32 inside the fermentation tank 22. The other end of the gas pipe 23 is connected to the external gas supply system through the solenoid valve 21. When the solenoid valve 21 is opened, the air flow enters the bubble plate 32 through the air pipe 23, and the bubble plate 32 injects the gas into the fermentation liquid of the fermentation tank 22 in the form of microbubbles, thereby providing oxygen supply for the fermentation bacteria and improving the fermentation efficiency.

[0034] The front end of the outer wall of the fermentation tank 22 is provided with a bacteria injection tube for injecting specific fermentation bacteria into the fermentation tank 22 during the fermentation process. A discharge pipe is also provided at one end of the fermentation tank 22 for discharging the finished product material after the fermentation is completed. During the entire processing process, the driving gear 26 and the idler gear 28 transmit power through a meshing connection, and the gear ratio is 1:4, which ensures that the speed of the cooling fan 27 is moderate, avoiding too fast or too slow to affect the cooling effect, thereby further optimizing the overall process.

[0035] Please see attached Figure 8 The cooling component includes a positioning plate 29, which is fixedly connected to the top of the middle plate 17. A plurality of copper plates 30 are fixedly connected to the bottom of the support plate 2. A serpentine tube 31 is fixedly connected to the inner wall of the copper plate 30. A driving gear 26 is fixedly connected to the outer wall of the rotating rod 6. An idle gear 28 is rotatably connected to one side of the top of the middle plate 17. A cooling fan 27 is fixedly connected to the top of the idle gear 28.

[0036] The idle gear 28, the driving gear 26, the first bevel gear 24 and the second bevel gear 25 are all made of polyetheretherketone. One end of the serpentine tube 31 is respectively connected to the inner wall of the plurality of sterilization bins 3, and one end of the serpentine tube 31 is connected to the inner wall of the fermentation tank 22.

[0037] Specifically, a plurality of copper plates 30 are fixedly connected to the bottom of the support plate 2. The copper plates 30 serve as heat exchange media for the cooling component, and their thermal conductivity is used to achieve efficient heat dissipation. A serpentine tube 31 is fixedly connected to the inner wall of the copper plate 30. The serpentine tube 31 is designed as a curved serpentine structure, so that the cooling medium has a longer flow path in the pipeline, thereby increasing the heat exchange area and improving the cooling efficiency.

[0038] The cooling component is driven by the transmission system and realizes a dynamic cooling effect. The outer wall of the rotary rod 6 is fixedly connected with a driving gear 26, and the driving gear 26 is driven by meshing with the idler gear 28 to realize effective transmission of power. The idler gear 28 is rotatably connected to one side of the top of the middle plate 17, and a cooling fan 27 is fixedly connected to its top. When the rotary rod 6 rotates under the action of the high-temperature and high-pressure steam generated by the steam direct injection mixer 4, the driving gear 26 is meshed with the idler gear 28 to drive the cooling fan 27 to rotate at high speed. The rotation of the cooling fan 27 generates airflow, so that the heat on the surface of the copper plate 30 can be quickly dissipated, thereby providing efficient air cooling for the liquid in the serpentine tube 31.

[0039] Furthermore, the idler gear 28, the driving gear 26, the first bevel gear 24 and the second bevel gear 25 are all made of polyetheretherketone (PEEK). PEEK has the excellent characteristics of light weight, high strength, high temperature resistance, corrosion resistance and wear resistance, and can maintain stable performance for a long time in a high temperature and high humidity working environment. At the same time, it greatly reduces the overall weight of the transmission system, reduces the mechanical resistance during rotation, and further improves the operating efficiency and service life of the cooling component.

[0040] The serpentine tube 31 is designed as a two-way connection structure, one end of which is connected to the inner wall of the sterilization chambers 3 to absorb the high-temperature sterilized liquid from the sterilization chambers 3; the other end is connected to the inner wall of the fermentation tank 22 to transport the cooled liquid to the fermentation tank 22 for fermentation. In the serpentine tube 31, the liquid is quickly cooled by the heat exchange between the copper plate 30 and the cooling air flow during the flow process, providing suitable temperature conditions for fermentation.

[0041] The cooling component achieves rapid cooling of the sterilized material. On the one hand, the serpentine tube 31 significantly improves the cooling efficiency through heat conduction with the copper plate 30; on the other hand, the cooling fan 27 forms an efficient air circulation system through the transmission relationship between the idle gear 28 and the driving gear 26, further enhancing the cooling effect. At the same time, the application of PEEK material improves the durability and stability of the transmission component, ensuring that the system can operate for a long time without frequent maintenance.

[0042] Please see attached Figure 5 A plurality of stirring rods 9 are fixedly connected to the outer wall of the rotating drum 8 , a plurality of nozzles 10 are arranged on the outer wall of the rotating drum 8 , and a feed flange 11 is installed on one side of the sterilization chamber 3 .

[0043] Specifically, a feed flange 11 is installed on one side of the sterilization bin 3, which is used to input the liquid to be sterilized into the bin and ensure the sealing performance to avoid external contamination. A rotating drum 8 is provided inside the sterilization bin 3, which is connected to the drive system through a rotating shaft 12 and rotates around its own axis under the drive of a motor 14. A plurality of stirring rods 9 are fixedly connected to the outer wall of the rotating drum 8, and these stirring rods 9 are arranged in a multi-point distribution manner to ensure that the liquid in the bin is fully stirred when the rotating drum 8 rotates, avoiding the occurrence of local liquid stagnation or uneven heating, thereby improving the uniformity and efficiency of sterilization.

[0044] In addition, the outer wall of the drum 8 is also provided with a plurality of nozzles 10, which are connected to the steam direct injection mixer 4 and are used to uniformly spray high-temperature steam onto the inner wall of the sterilization chamber 3 and the surface of the liquid. The multi-point arrangement of the nozzles 10 combined with the mechanical stirring action of the stirring rod 9 enables the steam to fully cover the liquid and quickly transfer heat, thereby achieving efficient sterilization of the liquid. The entire design ensures uniform heating of the liquid during the sterilization process through the dynamic coordination of stirring and high-temperature steam injection, while avoiding the problem of sterilization dead corners that may occur in traditional static sterilization. The drum 8, stirring rod 9 and nozzle 10 are all made of food-grade high-temperature resistant stainless steel materials to ensure the durability and hygiene of the device, and can operate stably for a long time in a high-temperature, high-pressure sterilization environment.

[0045] Please see attached Figure 3 -Attached Figure 4The transmission assembly includes a motor 14, which is fixedly connected to the top of the support plate 2, a second pulley 15 is fixedly connected to the output end of the motor 14, a third pulley 16 is fixedly connected to one side of the second pulley 15, and a first pulley 13 is fixedly connected to one side of the outer wall of the rotating drum 8. One of the first pulleys 13 is connected to the second pulley 15 by a belt, and one of the first pulleys 13 is connected to the third pulley 16 by a belt.

[0046] Specifically, the transmission assembly includes a motor 14, which is fixedly connected to the top of the support plate 2 and serves as a power source to provide rotational drive for the entire system. The output end of the motor 14 is fixedly connected to a second pulley 15, one side of the second pulley 15 is connected to the first pulley 13 through a belt, and the first pulley 13 is fixedly installed on one side of the outer wall of the rotating drum 8, so that the motor 14 transmits power to the rotating drum 8 through the belt, so that it rotates around its own axis.

[0047] At the same time, in order to further optimize the transmission efficiency and system stability, the second pulley 15 is also connected to the third pulley 16 through a belt. The third pulley 16 is connected to another first pulley 13 through a belt to form a multi-stage transmission structure to ensure good synchronization and stability during power transmission. Through the above design, when the motor 14 is started, its output shaft drives the second pulley 15 to rotate, and the power is transmitted to the first pulley 13 and the third pulley 16 in sequence via the belt, thereby realizing efficient driving of the drum 8. The stable rotation of the drum 8 drives the stirring rod 9 fixed on its outer wall to move synchronously, and combined with the high-temperature steam injection of the steam direct injection mixer 4, the material liquid is uniformly stirred and heated inside the sterilization chamber 3.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sterilization and fermentation system for preparing low-fat cream, comprising a support plate (2), characterized in that: The bottom of the support plate (2) is fixedly connected to a plurality of bases (1), the top of the support plate (2) is fixedly connected to a plurality of sterilization chambers (3), a steam direct injection mixer (4) is installed on the rear side of the base (1), the output end of the steam direct injection mixer (4) is fixedly connected to a delivery pipe (5), one side of the inner wall of the sterilization chamber (3) is rotatably connected to a rotating drum (8), one side of the rotating drum (8) is installed with a rotating shaft (12), one end of the top of the delivery pipe (5) is installed on the inner wall of the rotating shaft (12), the inner wall of the delivery pipe (5) is rotatably connected to a rotating rod (6), the outer wall of the rotating rod (6) is fixedly connected to a plurality of turbofans (7), the outer wall of the rotating rod (6) is provided with a cooling component, and two A middle plate (17) is fixedly connected to a side adjacent to the base (1), a rotating rod (19) is rotatably connected to the inner wall of the middle plate (17), a plurality of fan blades (20) are fixedly connected to the outer wall of the rotating rod (19), a sterile filter (18) is installed on one side of the middle plate (17), a solenoid valve (21) is fixedly connected to the top of the middle plate (17), an air supply pipe (23) is fixedly connected to the inner wall of the solenoid valve (21), a fermentation tank (22) is installed on the top of the base (1), a bubble plate (32) is provided on the inner wall of the fermentation tank (22), the air supply pipe (23) is communicated with the inner wall of the bubble plate (32), and a transmission assembly is fixedly connected to the top of the support plate (2).

2. A sterilization and fermentation system for preparing low-fat cream according to claim 1, characterized in that: The cooling assembly comprises a positioning plate (29), wherein the positioning plate (29) is fixedly connected to the top of the middle plate (17), a plurality of copper plates (30) are fixedly connected to the bottom of the support plate (2), a serpentine tube (31) is fixedly connected to the inner wall of the copper plate (30), a driving gear (26) is fixedly connected to the outer wall of the rotary rod (6), an idle gear (28) is rotatably connected to one side of the top of the middle plate (17), and a cooling fan (27) is fixedly connected to the top of the idle gear (28).

3. A sterilization and fermentation system for preparing low-fat cream according to claim 1, characterized in that: A plurality of stirring rods (9) are fixedly connected to the outer wall of the rotating drum (8), a plurality of nozzles (10) are arranged on the outer wall of the rotating drum (8), and a feed flange (11) is installed on one side of the sterilization chamber (3).

4. A sterilization and fermentation system for preparing low-fat cream according to claim 1, characterized in that: A second bevel gear (25) is fixedly connected to one side of the rotating rod (19), and a first bevel gear (24) is fixedly connected to the bottom of the rotating rod (6); the first bevel gear (24) and the second bevel gear (25) are meshingly connected.

5. A sterilization and fermentation system for preparing low-fat cream according to claim 2, characterized in that: The idle gear (28) is meshingly connected with the driving gear (26), and the gear ratio between the driving gear (26) and the idle gear (28) is 1:

4.

6. A sterilization and fermentation system for preparing low-fat cream according to claim 2, characterized in that: The idle gear (28), the driving gear (26), the first bevel gear (24) and the second bevel gear (25) are all made of polyetheretherketone.

7. A sterilization and fermentation system for preparing low-fat cream according to claim 1, characterized in that: The transmission assembly comprises a motor (14), the motor (14) being fixedly connected to the top of the support plate (2), the output end of the motor (14) being fixedly connected to a second belt pulley (15), one side of the second belt pulley (15) being fixedly connected to a third belt pulley (16), and one side of the outer wall of the rotating drum (8) being fixedly connected to the first belt pulley (13).

8. A sterilization and fermentation system for preparing low-fat cream according to claim 7, characterized in that: One of the first belt pulleys (13) is connected to the second belt pulley (15) via a belt, and one of the first belt pulleys (13) is connected to the third belt pulley (16) via a belt.

9. A sterilization and fermentation system for preparing low-fat cream according to claim 2, characterized in that: One end of the serpentine tube (31) is communicated with the inner walls of the plurality of sterilization chambers (3), and one end of the serpentine tube (31) is communicated with the inner wall of the fermentation tank (22).

10. A sterilization and fermentation system for preparing low-fat cream according to claim 1, characterized in that: A bacteria injection tube is provided at the front end of the outer wall of the fermentation tank (22), and a discharge pipe is provided at one end of the fermentation tank (22).

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