Microorganism cultivation device for milk fermentation

Abstract

The invention relates to the field of milk fermentation equipment, and discloses a microbial cultivation device for milk fermentation, which comprises a cultivation chamber, a sterilization chamber is arranged on one side in the cultivation chamber, a fermentation chamber is arranged on the other side in the cultivation chamber, and a sterilization bottle is movably mounted on the upper side in the sterilization chamber. A servo motor is fixedly installed on the side, close to the sterilization chamber, of the bottom end of the cultivation chamber, a main shaft is fixedly installed at the driving end of the servo motor, the tail end of the main shaft extends into the sterilization bottle, stirring rods are fixedly installed on the two sides of the middle of the main shaft, and a fermentation bottle is fixedly installed in the fermentation chamber; a material conveying pipe is fixedly mounted on one side of the interior of the sterilization bottle, and the tail end of the material conveying pipe extends into the fermentation bottle. Sterilization and fermentation are integrated, stirring and spinning are combined to improve the sterilization efficiency, water bath temperature control facilitates fermentation, intelligent oxygen supply is adjustable, magnetic bead stirring is high in quality, the structure is compact, and operation is convenient.

Description

Technical Field

[0001] The invention relates to the field of milk fermentation equipment, in particular to a microorganism cultivation device for milk fermentation. Background Art

[0002] Milk fermentation products occupy an important position in the food industry. Products such as yogurt and cheese are very popular among consumers, and the market demand continues to grow. Traditional milk fermentation processes are usually carried out in relatively simple environments and equipment, and it is difficult to accurately control the various parameters in the fermentation process, resulting in unstable product quality and low production efficiency. With the increasing requirements of consumers for the quality of fermented milk products and the development trend of large-scale and standardized production in the food industry, there is an urgent need for a microbial cultivation device for milk fermentation that can achieve efficient, precise and automated control.

[0003] Many traditional milk sterilization equipment only uses a single heating method, such as simple water bath heating or direct steam heating. This method can easily cause partial overheating of the milk, affecting the nutritional content and taste of the milk. In addition, the lack of effective stirring means makes the milk heated unevenly, sterilization is not thorough, there is a risk of residual microorganisms, and it cannot meet the high standards of modern food hygiene and safety.

[0004] Some fermentation devices are deficient in oxygen supply. Some use natural air diffusion, which cannot accurately control the oxygen supply. In the early stage of fermentation, insufficient oxygen may limit the rapid activation of bacteria, and in the later stage of fermentation, excessive oxygen may cause the growth of bacteria or excessive oxidation of yogurt, resulting in unpleasant flavors. In addition, some oxygen supply equipment has a complex structure, high maintenance cost, and is prone to failure, affecting the continuity of the fermentation process.

[0005] The stirring method of traditional fermentation equipment is relatively simple, mostly single-direction mechanical stirring, which makes it difficult to achieve all-round and multi-level stirring of the fermentation liquid. This makes it impossible for the fermentation bacteria and milk to be fully mixed, the fermentation reaction rate is limited, the fermentation time is prolonged, and it is not conducive to the uniform dissipation of the heat generated during the fermentation process, further exacerbating the problem of uneven temperature and reducing the fermentation efficiency and product quality. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a microbial cultivation device for milk fermentation, which solves the problems of uneven sterilization, difficult fermentation temperature control, imprecise oxygen supply, inefficient stirring, etc. during milk fermentation, realizes precise temperature control, efficient sterilization and stirring, intelligent oxygen supply and optimizes fermentation quality, thereby improving the production efficiency and quality of milk fermented products.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a microbial cultivation device for milk fermentation, comprising a cultivation chamber, a sterilization chamber is provided on one side of the cultivation chamber, a fermentation chamber is provided on the other side of the cultivation chamber, a sterilization bottle is movably installed on the upper side of the interior of the sterilization chamber, a servo motor is fixedly installed on the side of the bottom end of the cultivation chamber close to the sterilization chamber, a main shaft is fixedly installed on the driving end of the servo motor and the end of the main shaft extends to the interior of the sterilization bottle, stirring rods are fixedly installed on both sides of the middle of the main shaft, a fermentation bottle is fixedly installed in the fermentation chamber, a feed pipe is fixedly installed on one side of the interior of the sterilization bottle and the end of the feed pipe extends to the interior of the fermentation bottle, a peristaltic pump is fixedly installed on the front side of the top of the cultivation chamber and the driving end of the peristaltic pump is arranged on the middle outer diameter of the feed pipe.

[0008] Preferably, a plurality of heat exchange fins are evenly and fixedly mounted on the outer diameter of the sterilization bottle, and electric heaters are fixedly mounted on both sides of the interior of the sterilization chamber.

[0009] Preferably, a driving bevel gear is fixedly mounted on the lower outer diameter of the main shaft, a first driven bevel gear is fixedly mounted on the bottom end of the sterilization bottle, a transmission rod is movably mounted at a position between the sterilization chamber and the fermentation chamber on the inner bottom of the incubation chamber, a first transmission bevel gear is fixedly mounted on one end of the transmission rod located inside the sterilization chamber, and the upper and lower sides of the first transmission bevel gear are respectively meshed and connected with the first driven bevel gear and the driving bevel gear.

[0010] Preferably, a turntable is movably mounted on the bottom end of the fermentation bottle, a ring-shaped magnet is fixedly mounted on the top end of the turntable, an annular slide groove is provided on the bottom wall of the fermentation bottle, a plurality of magnetic beads are movably arranged inside the annular slide groove, a second driven bevel gear is fixedly mounted on the bottom end of the turntable, a second transmission bevel gear is fixedly mounted on one end of the transmission rod located inside the fermentation chamber, and the second transmission bevel gear is meshed and connected with one side of the bottom of the second driven bevel gear.

[0011] Preferably, a water bath is provided between the inner wall of the fermentation chamber and the outer wall of the fermentation bottle, a constant temperature water inlet is fixedly installed on one side of the upper portion of the fermentation chamber, and a constant temperature water outlet is fixedly installed on one side of the lower portion of the fermentation chamber.

[0012] Preferably, the top end of the main shaft extends to the outside of the cultivation chamber and is fixedly installed with a flywheel, a movable groove is opened on one side of the upper surface of the flywheel, a threaded rod is movably installed inside the movable groove, a movable block is threadedly connected on the outer diameter of the threaded rod, one end of the threaded rod extends to the outside of the movable groove and is fixedly installed with an adjusting knob, and a connecting rod is movably installed on the top of the movable block.

[0013] Preferably, a cylinder is horizontally arranged on one side of the top of the incubation chamber close to the fermentation chamber, a piston is movably installed inside the cylinder, the end of the connecting rod is movably installed on the outer end of the piston, an air inlet pipe is opened on the outer end of the cylinder, an air filter is fixedly installed on the outside of the air inlet pipe, a first rubber one-way valve is fixedly installed inside the air inlet pipe, an exhaust pipe is fixedly installed on one side of the bottom of the cylinder and the end of the exhaust pipe extends to the interior of the fermentation chamber, a second rubber one-way valve is fixedly installed inside the exhaust pipe, and a plurality of branch pipes are fixedly connected to the end of the exhaust pipe.

[0014] Preferably, a discharge pipe is provided in the middle of the bottom end of the fermentation bottle and the end of the discharge pipe extends to the outside of the cultivation chamber, a switch valve is fixedly installed on the outer diameter of the discharge pipe, a milk inlet is opened on one side of the top of the sterilization chamber, a fermentation bacteria inlet is opened on one side of the top of the fermentation chamber, a control panel is fixedly installed at the front end of the cultivation chamber, and support legs are fixedly installed on both sides of the bottom of the cultivation chamber.

[0015] The present invention provides a microorganism cultivation device for milk fermentation, which has the following beneficial effects:

[0016] 1. The present invention heats and sterilizes milk by combining an electric heater with a heat exchange plate. At the same time, a servo motor drives the main shaft to rotate a stirring rod, and the main shaft drives the sterilization bottle to rotate in the reverse direction through a bevel gear. The forward stirring rod cooperates with the reversely rotating sterilization bottle, which greatly improves the stirring efficiency of the milk, improves the heating efficiency, and maintains good fluidity of the milk, ensuring uniform and sufficient sterilization. A water bath is arranged in the fermentation chamber, and the water temperature is maintained constant through a constant temperature water inlet and a constant temperature water outlet, which can provide a stable and suitable temperature environment for the fermentation process, effectively improve the fermentation efficiency, and is conducive to the full play of the fermentation bacteria and ensures the fermentation quality.

[0017] 2. The present invention utilizes the coordinated operation of the flywheel at the top of the main shaft, the movable groove, the threaded rod, the movable block, the connecting rod, the piston and other components to realize automatic oxygen supply to the fermentation bottle. And by rotating the adjustment knob to change the position of the movable block, thereby changing the movement amplitude of the connecting rod end and the piston, the amount of oxygen entering the fermentation bottle can be accurately adjusted to meet the demand for oxygen in different fermentation stages, promote the fermentation process to proceed smoothly, and improve the fermentation effect. At the same time, the transmission rod drives the turntable to rotate, and the annular magnet on the turntable interacts with the magnetic beads in the annular chute on the bottom wall of the fermentation bottle, so that the magnetic beads perform circular motion in the annular chute, so as to achieve the stirring of the milk in the fermentation bottle, speed up the fermentation speed, and make the fermented milk more delicate and uniform, and significantly improve the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of the present invention;

[0019] Figure 2for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 It is a front cross-sectional view of the present invention;

[0021] Figure 4 Schematic diagram of the internal structure of the sterilization chamber in the present invention;

[0022] Figure 5 It is a schematic diagram of the internal structure of the fermentation chamber of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the turntable in the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the fermentation bottle in the present invention;

[0025] Figure 8 It is a schematic diagram of the internal structure of the cylinder in the present invention.

[0026] Among them, 1. Cultivation room; 2. Sterilization room; 3. Fermentation room; 4. Sterilization bottle; 5. Heat exchanger; 6. Electric heater; 7. Servo motor; 8. Main shaft; 9. Stirring rod; 10. Active bevel gear; 11. First driven bevel gear; 12. Transmission rod; 13. First transmission bevel gear; 14. Fermentation bottle; 15. Turntable; 16. Second driven bevel gear; 17. Second transmission bevel gear; 18. Water bath; 19. Constant temperature water inlet; 20. Constant temperature water outlet; 21. Flywheel; 22. Movable tank; 23. Threaded rod; 24, movable block; 25, adjusting knob; 26, connecting rod; 27, cylinder; 28, piston; 29, air inlet pipe; 30, air filter; 31, first rubber one-way valve; 32, exhaust pipe; 33, second rubber one-way valve; 34, branch pipe; 35, discharge pipe; 36, switch valve; 37, annular magnet; 38, annular slide; 39, magnetic beads; 40, feed pipe; 41, peristaltic pump; 42, milk inlet; 43, fermentation bacteria inlet; 44, control panel; 45, support leg. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings of the specification of the present invention to clearly and completely describe the technical solutions in the embodiments 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.

[0028] Example:

[0029] Please see attached Figure 1 -Attached Figure 8The embodiment of the present invention provides a microorganism cultivation device for milk fermentation, such as Figure 1As shown, it includes a cultivation chamber 1. The cultivation chamber 1 serves as the outer shell of the entire device, providing a stable installation and working space for the internal components. The material is solid and has good heat insulation performance, which can effectively reduce the internal heat loss and protect the internal device from interference from the external environment. A sterilization chamber 2 is opened on one side of the cultivation chamber 1. The internal structure of the sterilization chamber 2 is specially designed for the sterilization needs of milk. The size of the space is suitable for the installation and operation of the sterilization bottle 4 and related heating and transmission components. The inner walls around it are specially treated to facilitate the uniform distribution and reflection of heat, thereby improving the sterilization efficiency. A fermentation chamber 3 is opened on the other side of the cultivation chamber 1. The fermentation chamber 3 provides a stable and suitable closed environment for the fermentation process. It is independent of the sterilization chamber 2 and is connected to the sterilization chamber 2. The feeding pipe 40 and other components are connected to facilitate the transfer of milk in different processing stages. The water bath 18 arranged between the inner wall and the outer wall of the fermentation bottle 14 has a delicate structure and can evenly wrap the fermentation bottle 14 to ensure the constant and uniform temperature during the fermentation process. The sterilization bottle 4 is movably installed on the upper side of the interior of the sterilization chamber 2. The sterilization bottle 4 is made of high-temperature resistant and hygienic and safe materials. The shape of the bottle body is adapted to the internal stirring structure, which can make the milk flow fully during the stirring process. A number of heat exchange plates 5 are evenly fixedly installed on the outer diameter. These heat exchange plates 5 have excellent thermal conductivity and are evenly distributed, which increases the contact area with the hot air inside the sterilization chamber 2, and can quickly and efficiently transfer the heat generated by the electric heater 6 to the inside of the sterilization bottle 4. The milk is heated evenly. A servo motor 7 is fixedly installed on one side of the bottom of the cultivation chamber 1 near the sterilization chamber 2. As a power source, the servo motor 7 has precise speed control capability and stable operating performance. A main shaft 8 is fixedly installed on its driving end, and the end of the main shaft 8 extends to the inside of the sterilization bottle 4. The main shaft 8 is made of high-strength alloy material and can maintain good stability and balance during high-speed rotation. Stirring rods 9 are fixedly installed on both sides of the middle. The shape and length of the stirring rods 9 are carefully designed. When rotating, they can produce a strong stirring effect on the milk in the sterilization bottle 4, causing the milk to heat up quickly and be heated evenly. A fermentation bottle 14 is fixedly installed inside the fermentation chamber 3. The fermentation bottle 14 is also selected from high hygiene standards and suitable for micro The material of the biological fermentation environment has a spacious internal space and is conducive to the full mixing of the fermentation bacteria and the milk. The connection structure between the bottom and the turntable 15 is tight and flexible, and can cooperate with the rotation of the turntable 15 to achieve a special stirring effect of the internal milk. A feeding pipe 40 is fixedly installed on one side of the interior of the sterilization bottle 4, and the end of the feeding pipe 40 extends to the interior of the fermentation bottle 14. The feeding pipe 40 is made of a non-toxic and acid- and alkali-resistant material with a smooth inner wall, which can effectively reduce the residue and blockage of milk during the transportation process, ensuring that the sterilized milk is smoothly transferred to the fermentation bottle 14. A peristaltic pump 41 is fixedly installed on the front side of the top of the cultivation chamber 1, and the driving end of the peristaltic pump 41 is set on the middle outer diameter of the feeding pipe 40. The peristaltic pump 41 has precise flow control capabilities.Through its peristaltic action, the milk in the sterilization bottle 4 can be smoothly transported to the fermentation bottle 14 at a set flow rate and speed, avoiding the milk from being contaminated or the flow rate being unstable during the transportation process.

[0030] In this embodiment, a number of heat exchange plates 5 are evenly and fixedly installed on the outer diameter of the sterilization bottle 4. These heat exchange plates 5 are tightly fitted to the outer wall of the sterilization bottle 4 to form an efficient heat conduction structure, which can quickly conduct the heat in the sterilization chamber 2 to the milk in the sterilization bottle 4, so that the milk can be quickly heated up to meet the sterilization temperature requirement. Electric heaters 6 are fixedly installed on both sides of the interior of the sterilization chamber 2. The power of the electric heater 6 is adjustable and the heating power can be accurately controlled according to different sterilization requirements. The heating elements are evenly distributed to ensure that the temperature field in the sterilization chamber 2 is uniform and stable, avoiding local overheating or overcooling, and providing a stable and reliable heat source for the sterilization of milk.

[0031] Furthermore, a driving bevel gear 10 is fixedly installed on the lower outer diameter of the main shaft 8. The driving bevel gear 10 is firmly connected to the main shaft 8, and its tooth profile has high precision, and can accurately transmit power when the main shaft 8 rotates. A first driven bevel gear 11 is fixedly installed on the bottom end of the sterilization bottle 4. The connection between the first driven bevel gear 11 and the bottom of the sterilization bottle 4 is firm and concentric, and can stably drive the sterilization bottle 4 to rotate in the reverse direction in the meshing transmission with the driving bevel gear 10. A transmission rod 12 is movably installed at the inner bottom of the cultivation chamber 1 between the sterilization chamber 2 and the fermentation chamber 3. The transmission rod 12 is installed on a high-precision bearing and can rotate flexibly. It is located in the sterilization chamber 2 A first transmission bevel gear 13 is fixedly installed at one end of the interior, and the upper and lower sides of the first transmission bevel gear 13 are respectively meshed and connected with the first driven bevel gear 11 and the driving bevel gear 10. The first transmission bevel gear 13 plays a key transition and speed change role in the entire transmission system. Its tooth surface has been specially treated, wear-resistant and has high transmission efficiency. Through precise meshing with the driving bevel gear 10 and the first driven bevel gear 11, the power of the main shaft 8 is effectively transmitted to the spin motion of the sterilization bottle 4, which greatly improves the stirring efficiency of the milk, makes the milk heated more evenly during the sterilization process, improves the heating efficiency while maintaining good fluidity of the milk, and ensures uniform and sufficient sterilization.

[0032] Furthermore, a turntable 15 is movably installed at the bottom end of the fermentation bottle 14. The connection between the turntable 15 and the bottom of the fermentation bottle 14 adopts a bearing structure with a low friction coefficient, which can be flexibly rotated and has good sealing performance. An annular magnet 37 is fixedly installed on the top of the turntable 15. The annular magnet 37 has stable magnetism and moderate strength, and can generate sufficient adsorption force on the magnetic beads 39 in the annular groove 38 on the bottom wall of the fermentation bottle 14. An annular groove 38 is provided on the bottom wall of the fermentation bottle 14. The inner wall of the annular groove 38 is smooth and has an appropriate depth, which can provide a stable circular motion track for the magnetic beads 39. A plurality of magnetic beads 39 are movably arranged inside the annular groove 38. The magnetic beads 39 are made of hygienic and safe magnetic materials. Under the action of the annular magnet 37, they can move in the annular slide The turntable 15 can smoothly make circular motion in the groove 38, thereby achieving the stirring of the milk in the fermentation bottle 14, accelerating the fermentation efficiency and making the fermented milk more delicate. A second driven bevel gear 16 is fixedly installed at the bottom end of the turntable 15. The connection between the second driven bevel gear 16 and the turntable 15 is firm and reliable. Its tooth shape is adapted to the second transmission bevel gear 17 fixedly installed at one end of the transmission rod 12 inside the fermentation chamber 3, and the second transmission bevel gear 17 is meshed and connected with one side of the bottom of the second driven bevel gear 16. When the transmission rod 12 rotates, it can stably drive the second transmission bevel gear 17 to rotate, and then drive the second driven bevel gear 16 and the turntable 15 to rotate, thereby achieving a special stirring effect on the milk in the fermentation bottle 14 and significantly improving the quality of the finished product.

[0033] Furthermore, a water bath 18 is provided between the inner wall of the fermentation chamber 3 and the outer wall of the fermentation bottle 14. The internal space of the water bath 18 is reasonable and can accommodate an appropriate amount of constant temperature water. The positions of the water inlet and the water outlet are scientifically designed to ensure that the water flows evenly in the tank and avoid local water temperature differences. A constant temperature water inlet 19 is fixedly installed on one side of the upper part of the fermentation chamber 3. The constant temperature water inlet 19 is connected to an external constant temperature water source. The interface is well sealed and is provided with a flow regulating device, which can accurately control the flow of constant temperature water entering the water bath 18. A constant temperature water outlet 20 is fixedly installed on one side of the lower part of the fermentation chamber 3. The constant temperature water outlet 20 can discharge the used constant temperature water in time. The pipeline design is reasonable and can effectively prevent water backflow. The circulation control of the constant temperature water in the water bath 18 by the constant temperature water inlet 19 and the constant temperature water outlet 20 maintains the constant water temperature, can provide a stable and suitable temperature environment for the fermentation process, effectively improve the fermentation efficiency, is conducive to the full play of the fermentation bacteria, and ensures the fermentation quality.

[0034] Furthermore, the top of the main shaft 8 extends to the outside of the cultivation chamber 1 and is fixedly installed with a flywheel 21. The flywheel 21 has a uniform mass distribution and a moderate moment of inertia. After being installed at the top of the main shaft 8, it can stably rotate with the main shaft 8. A movable groove 22 is opened on one side of the upper surface of the flywheel 21. The movable groove 22 has a regular shape and a suitable depth. A threaded rod 23 is movably installed inside. The matching accuracy between the threaded rod 23 and the movable groove 22 is high, and it can flexibly rotate and translate in the groove. A movable block 24 is threadedly connected to the outer diameter of the threaded rod 23, and the movable block 24 is tightly threaded with the threaded rod 23. The movable block 24 is close and smooth, and can accurately move along the groove wall when the threaded rod 23 rotates. One end of the threaded rod 23 extends to the outside of the movable groove 22 and is fixedly installed with an adjusting knob 25. The adjusting knob 25 is convenient for the operator to manually adjust. The rotation feel is comfortable, the scale markings are clear, and the position change of the movable block 24 can be intuitively reflected. A connecting rod 26 is movably installed on the top of the movable block 24. The connections between the two ends of the connecting rod 26 and the movable block 24 and the piston 28 adopt a flexibly rotatable joint structure, which can accurately convert the circular motion of the movable block 24 into the linear reciprocating motion of the piston 28.

[0035] Furthermore, a cylinder 27 is horizontally arranged on one side of the top of the cultivation chamber 1 near the fermentation chamber 3. The internal space of the cylinder 27 is adapted to the size of the piston 28. The inner wall is finely polished to reduce the friction resistance of the piston 28 when it moves. The piston 28 is movably installed inside the cylinder 27. The piston 28 is made of a rubber material with good sealing performance combined with a metal frame. It can smoothly reciprocate left and right in the cylinder 27 and maintain good sealing during the movement. The end of the connecting rod 26 is movably installed on the outer end of the piston 28. An air inlet pipe 29 is opened on the outer end of the cylinder 27. The diameter of the air inlet pipe 29 is moderate, and the inner wall is smooth, which can reduce the air flow resistance. The outer side of the air inlet pipe 29 is fixedly installed An air filter 30 is installed. The air filter 30 adopts high-efficiency filtering materials and can effectively filter impurities, microorganisms and other pollutants in the air, providing a clean air source for the fermentation process. A first rubber one-way valve 31 is fixedly installed inside the air inlet pipe 29. The first rubber one-way valve 31 is flexible to open and close and has good sealing performance. When the piston 28 moves to the left and the air pressure in the cylinder 27 decreases, it can be smoothly opened by the external atmospheric pressure, so that the external air enters the cylinder 27 after being filtered by the air filter 30. An exhaust pipe 32 is fixedly installed on one side of the bottom of the cylinder 27, and the end of the exhaust pipe 32 extends to the inside of the fermentation chamber 3. The exhaust pipe 32 has a reasonable pipeline layout and can exhaust the air in the cylinder 27. The second rubber one-way valve 33 is fixedly installed inside the exhaust pipe 32. The second rubber one-way valve 33 works in conjunction with the first rubber one-way valve 31. When the piston 28 moves to the right, the air pressure in the cylinder 27 increases, and the first rubber one-way valve 31 can be closed and the second rubber one-way valve 33 can be opened, so that air enters the fermentation bottle 14 through the exhaust pipe 32, and then is evenly discharged into the milk through the branch pipe 34 to supply oxygen for the fermentation process. The flywheel 21 at the top of the main shaft 8, the movable groove 22, the threaded rod 23, the movable block 24, the connecting rod 26, the piston 28 and other components work in conjunction to realize automatic oxygen supply to the fermentation bottle 14, and the threaded rod 26 is driven by rotating the adjusting knob 25. The rod 23 rotates, and the rotating threaded rod 23 will drive or move the movable block 24 under the limiting action of the movable groove 22, so that the movable block 24 is close to or away from the center of the flywheel 21. When the position of the movable block 24 changes, when the flywheel 21 rotates, the movable radius of the movable block 24 doing circular motion will change accordingly, thereby changing the movement amplitude of the end of the connecting rod 26 and the piston 28 in the cylinder 27. When the movement amplitude changes, the amount of air entering the cylinder 27 each time also changes accordingly, thereby changing the amount of oxygen supplied to the fermentation bottle 14 each time. The amount of oxygen entering the fermentation bottle 14 can be accurately adjusted to meet the oxygen demand at different fermentation stages, promote the smooth progress of the fermentation process, and improve the fermentation effect.

[0036] Furthermore, a discharge pipe 35 is provided at the middle of the bottom end of the fermentation bottle 14, and the end of the discharge pipe 35 extends to the outside of the cultivation chamber 1. The discharge pipe 35 is made of corrosion-resistant and easy-to-clean material, and its diameter can meet the rapid discharge requirements of the fermented milk. A switch valve 36 is fixedly installed on the outer diameter of the discharge pipe 35. The switch valve 36 is easy to operate and has good sealing performance. It can accurately control the opening and closing state of the discharge pipe 35. A milk inlet 42 is provided on one side of the top of the sterilization chamber 2. The milk inlet 42 is provided with a sealing cover, which can be easily opened when introducing milk and is tightly connected to the external milk delivery pipeline to prevent milk leakage. A fermentation inlet 42 is provided on one side of the top of the fermentation chamber 3. The strain introduction port 43 and the fermentation strain introduction port 43 also have good sealing performance, which can prevent external contamination from entering the fermentation bottle 14 when the fermentation strain is introduced. A control panel 44 is fixedly installed at the front end of the cultivation chamber 1. The control panel 44 adopts an intelligent design with a simple and intuitive interface. It can easily set and monitor the operating parameters of the servo motor 7, electric heater 6, peristaltic pump 41 and other equipment to achieve automatic control of the entire device. Support legs 45 are fixedly installed on both sides of the bottom of the cultivation chamber 1. The support legs 45 have a stable structure and a moderate height, which can provide stable and reliable support for the cultivation chamber 1 to ensure that the device will not shake or tilt during operation.

[0037] Working principle: firstly, milk is introduced into the sterilization bottle 4 through the milk introduction tube. After the milk flows into the sterilization bottle 4 from the milk introduction port 42, the sealing cover of the milk introduction port 42 is closed, and then the electric heater 6 is turned on. The electric heater 6 starts to work and generates heat. The heat gradually diffuses in the sterilization chamber 2 and is transferred to the inside of the sterilization bottle 4 through the heat exchange plate 5, so as to achieve heating and sterilization of the milk. At the same time, the servo motor 7 is started. The servo motor 7 runs stably according to the speed set by the control panel 44. The servo motor 7 drives the main shaft 8 to rotate to drive the stirring rod 9 to rotate. The stirring rod 9 vigorously stirs the milk in the sterilization bottle 4 to make the milk evenly heated. In addition, the rotating main shaft 8 drives the active bevel gear 10 to rotate, and the active bevel gear 10 is meshed with the first transmission bevel gear 13. The first transmission bevel gear 13 and the transmission rod 12 are driven to rotate, and the first transmission bevel gear 13 is meshed with the first driven bevel gear 11, thereby driving the sterilization bottle 4 to rotate in the opposite direction. The forward rotating stirring rod 9 and the reverse rotating sterilization bottle 4 are used to greatly improve the stirring efficiency of the milk, improve the heating efficiency and maintain the fluidity of the milk, and ensure that the sterilization is uniform and sufficient. After the sterilization of the milk is completed, the peristaltic pump 41 is started. The peristaltic pump 41 cooperates with the feed pipe 40 to transfer the milk in the sterilization bottle 4 to the fermentation bottle 14 according to the set flow rate and speed. After the milk is cooled to a certain temperature, fermentation bacteria are added to the fermentation bottle 14 through the fermentation bacteria introduction port 43. At the same time, constant temperature water is introduced into the water bath 18 through the constant temperature water inlet 19. The constant temperature water in the water bath 18 The water bath 18 keeps the fermentation bottle 14 warm, thereby improving the subsequent fermentation efficiency. When the main shaft 8 rotates, it also drives the flywheel 21 at the top to rotate. The flywheel 21 drives the movable block 24 in the movable groove 22 to make a circular motion. The movable block 24 drives the piston 28 to make a left and right reciprocating motion in the cylinder 27 through the connecting rod 26. When the piston 28 moves to the left, the air pressure in the cylinder 27 decreases, and the external atmospheric pressure opens the first rubber one-way valve 31 of the air inlet pipe 29. The external air enters the cylinder 27 after being filtered by the air filter 30. When the piston 28 moves to the right, the air pressure in the cylinder 27 increases, and the external atmospheric pressure closes the first rubber one-way valve 31 and opens the second rubber one-way valve 33. The air enters the fermentation bottle 14 through the exhaust pipe 32 The air is then discharged into the milk evenly through the branch pipe 34 to supply oxygen for the fermentation process. When the air supply needs to be changed, the threaded rod 23 is driven to rotate by rotating the adjusting knob 25. The rotating threaded rod 23, under the limiting action of the movable groove 22, will drive or move the movable block 24 to make the movable block 24 close to or away from the center of the flywheel 21. When the position of the movable block 24 changes, when the flywheel 21 rotates, the movable radius of the movable block 24 doing circular motion will change accordingly, thereby changing the movement amplitude of the end of the connecting rod 26 and the piston 28 in the cylinder 27. When the movement amplitude changes, the amount of air entering the cylinder 27 each time also changes accordingly, thereby changing the amount of oxygen supplied to the fermentation bottle 14 each time. In addition, when the transmission rod 12 rotates,It will also drive the second transmission bevel gear 17 to rotate, and the second transmission bevel gear 17 meshes with the second driven bevel gear 16, driving the second driven bevel gear 16 and the turntable 15 to rotate. When the turntable 15 rotates, it will drive the annular magnet 37 on the top to rotate. Since the annular magnet 37 always has an adsorption effect on the magnetic beads 39, when the annular magnet 37 rotates, it will drive all the magnetic beads 39 to do a circular motion in the annular chute 38, thereby achieving the stirring of the milk in the fermentation bottle 14, accelerating the fermentation efficiency while making the fermented milk more delicate and improving the quality of the finished product. After the fermentation is completed, open the switch valve 36 and discharge the milk from the discharge pipe 35.

[0038] 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 microorganism cultivation device for milk fermentation, comprising a cultivation chamber (1), characterized in that: A sterilization chamber (2) is provided on one side of the cultivation chamber (1), and a fermentation chamber (3) is provided on the other side of the cultivation chamber (1). A sterilization bottle (4) is movably mounted on the upper side of the interior of the sterilization chamber (2). A servo motor (7) is fixedly mounted on the bottom of the cultivation chamber (1) near the sterilization chamber (2). A main shaft (8) is fixedly mounted on the driving end of the servo motor (7), and the end of the main shaft (8) extends to the interior of the sterilization bottle (4). Stirring rods (9) are fixedly mounted on both sides of the middle of the main shaft (8). A fermentation bottle (14) is fixedly mounted on the interior of the fermentation chamber (3). A feed pipe (40) is fixedly mounted on one side of the interior of the sterilization bottle (4), and the end of the feed pipe (40) extends to the interior of the fermentation bottle (14). A peristaltic pump (41) is fixedly mounted on the front side of the top of the cultivation chamber (1), and the drive end of the peristaltic pump (41) is arranged on the middle outer diameter of the feed pipe (40).

2. A microorganism cultivation device for milk fermentation according to claim 1, characterized in that: A plurality of heat exchange fins (5) are evenly and fixedly mounted on the outer diameter of the sterilization bottle (4), and electric heaters (6) are fixedly mounted on both sides of the interior of the sterilization chamber (2).

3. A microorganism cultivation device for milk fermentation according to claim 1, characterized in that: A driving bevel gear (10) is fixedly mounted on the lower outer diameter of the main shaft (8), a first driven bevel gear (11) is fixedly mounted on the bottom end of the sterilization bottle (4), a transmission rod (12) is movably mounted at a position between the sterilization chamber (2) and the fermentation chamber (3) on the inner bottom of the cultivation chamber (1), a first transmission bevel gear (13) is fixedly mounted on one end of the transmission rod (12) located inside the sterilization chamber (2), and the upper and lower sides of the first transmission bevel gear (13) are respectively meshed and connected with the first driven bevel gear (11) and the driving bevel gear (10).

4. A microorganism cultivation device for milk fermentation according to claim 3, characterized in that: A turntable (15) is movably mounted at the bottom of the fermentation bottle (14), an annular magnet (37) is fixedly mounted at the top of the turntable (15), an annular chute (38) is provided on the bottom wall of the fermentation bottle (14), a plurality of magnetic beads (39) are movably arranged inside the annular chute (38), a second driven bevel gear (16) is fixedly mounted at the bottom of the turntable (15), a second transmission bevel gear (17) is fixedly mounted at one end of the transmission rod (12) located inside the fermentation chamber (3), and the second transmission bevel gear (17) is meshedly connected with one side of the bottom of the second driven bevel gear (16).

5. The microorganism cultivation device for milk fermentation according to claim 1, characterized in that: A water bath (18) is provided between the inner wall of the fermentation chamber (3) and the outer wall of the fermentation bottle (14), a constant temperature water inlet (19) is fixedly installed on one side of the upper part of the fermentation chamber (3), and a constant temperature water outlet (20) is fixedly installed on one side of the lower part of the fermentation chamber (3).

6. The microorganism cultivation device for milk fermentation according to claim 1, characterized in that: The top end of the main shaft (8) extends to the outside of the cultivation chamber (1) and is fixedly mounted with a flywheel (21); a movable groove (22) is provided on one side of the upper surface of the flywheel (21); a threaded rod (23) is movably mounted inside the movable groove (22); a movable block (24) is threadedly connected on the outer diameter of the threaded rod (23); one end of the threaded rod (23) extends to the outside of the movable groove (22) and is fixedly mounted with an adjusting knob (25); a connecting rod (26) is movably mounted on the top end of the movable block (24).

7. A microorganism cultivation device for milk fermentation according to claim 6, characterized in that: A cylinder (27) is horizontally arranged on one side of the top of the cultivation chamber (1) close to the fermentation chamber (3), a piston (28) is movably mounted inside the cylinder (27), the end of the connecting rod (26) is movably mounted on the outer end of the piston (28), an air inlet pipe (29) is opened on the outer end of the cylinder (27), an air filter (30) is fixedly mounted on the outer side of the air inlet pipe (29), a first rubber one-way valve (31) is fixedly mounted inside the air inlet pipe (29), an exhaust pipe (32) is fixedly mounted on one side of the bottom of the cylinder (27), and the end of the exhaust pipe (32) extends to the inside of the fermentation chamber (3), a second rubber one-way valve (33) is fixedly mounted inside the exhaust pipe (32), and a plurality of branch pipes (34) are fixedly connected to the end of the exhaust pipe (32).

8. The microorganism cultivation device for milk fermentation according to claim 1, characterized in that: A discharge pipe (35) is provided at the middle of the bottom end of the fermentation bottle (14), and the end of the discharge pipe (35) extends to the outside of the cultivation chamber (1); a switch valve (36) is fixedly installed on the outer diameter of the discharge pipe (35); a milk inlet (42) is provided at one side of the top of the sterilization chamber (2); a fermentation bacteria inlet (43) is provided at one side of the top of the fermentation chamber (3); a control panel (44) is fixedly installed at the front end of the cultivation chamber (1); and support legs (45) are fixedly installed on both sides of the bottom end of the cultivation chamber (1).

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