Immersion type sterilization machine

Abstract

The utility model belongs to the technical field of milk sterilization instruments, particularly relates to an immersion type sterilization machine, and aims to solve the problem of low sterilization efficiency caused by the fact that an existing device adopts a static heating sterilization mode to sterilize milk, and adopts the following scheme that the immersion type sterilization machine comprises a sterilization tank, supporting legs, a feeding pipe and a discharging pipe, on one hand, the driving motor drives the first rotating rod and the spiral stirring blade to rotate, milk can be stirred, the milk is heated more uniformly, the sterilization effect is improved, meanwhile, the stirring rod on the second rotating rod can also rotate along with the first rotating rod, the stirring force is further enhanced, and all parts of the milk can make full contact with the high-temperature environment; on one hand, the second rotating rod is matched with the gear ring and the first gear to rotate, and the stirring rods are fixedly connected to the rod body in a crossed mode, so that milk can be stirred from different angles, the situation that local sterilization is insufficient is avoided, and the overall sterilization quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to a sterilization machine, specifically an immersion sterilization machine, belonging to the technical field of milk sterilization equipment. Background Technology

[0002] With the booming development of the dairy industry, milk, as a popular beverage, has attracted much attention from consumers regarding its quality and safety. Sterilization using a pasteurizer is a key step in the milk production process, directly affecting the product's shelf life and quality stability. There are many traditional milk sterilization methods; however, in practical applications, many existing sterilization devices have obvious defects.

[0003] In the prior art, such as the immersion sterilizer disclosed in announcement number CN111728117A, the material is directly heated by steam immersion, which greatly shortens the heating time. The material does not need to be heated for a long time, which preserves the original nutrients of the material and improves production efficiency. However, when the existing device sterilizes milk, due to the viscosity and fluidity of milk, heat transfer mainly relies on heat conduction when heating and sterilizing in a static state. This will result in extremely uneven heat distribution. The milk layer near the heating source will heat up rapidly, while the milk far from the heating source will heat up slowly, resulting in inconsistent sterilization effect of the milk overall. Utility Model Content

[0004] This invention provides an immersion sterilizer to address the problem of low sterilization efficiency caused by the use of static heating sterilization in existing devices for milk sterilization.

[0005] The present invention achieves the above objectives through the following technical solution: an immersion sterilizer, comprising a sterilization tank, support legs, a feed pipe and a discharge pipe, wherein the support legs are fixedly connected to the surface of the sterilization tank in a circular array, and the installation position of the support legs is close to the bottom surface of the sterilization tank; the feed pipe is fixedly connected above one side surface of the sterilization tank and is connected to the sterilization tank; and the discharge pipe is fixedly connected to the bottom surface of the sterilization tank, and the installation position of the discharge pipe is located near the outer periphery of the bottom surface of the sterilization tank.

[0006] A drive motor is fixedly installed on the surface of the sterilization tank. A first rotating rod is rotatably connected at the center of the inner wall of the sterilization tank. The top of the first rotating rod is coaxially fixedly connected to the output end of the drive motor. A spiral auger plate is fixedly sleeved on the surface of the first rotating rod. A triangular rotating seat is fixedly sleeved on the surface of the first rotating rod. The installation position of the triangular rotating seat is close to the inner top of the sterilization tank. The bottom surface of the triangular rotating seat is rotatably connected to second rotating rods in a circular array. A first gear is fixedly sleeved on the surface of each second rotating rod. A gear ring is fixedly connected to the inner wall of the sterilization tank through a connecting column. The installation height of the gear ring is the same as the installation height of the first gear. The first gear and the gear ring are meshed. A stirring rod is crosswise fixedly connected to the body of each second rotating rod.

[0007] As a further improvement of this utility model: a rectangular frame is fixedly fitted onto the surface of each second rotating rod. The rectangular frame is installed on the outside of the stirring rod, and the rectangular frame and the stirring rod are fixedly connected. Brush bristles are fixedly connected to both sides of the rectangular frame.

[0008] As a further embodiment of this utility model: a pretreatment box is fixedly connected to the top of the feed pipe, and an installation positioning groove is symmetrically opened on the inner wall of the pretreatment box. A filter box is set inside the pretreatment box, and filter holes are opened on the bottom surface of the filter box. A strip slider is symmetrically fixedly connected to the surface of the filter box, and the strip slider is inserted into the installation positioning groove.

[0009] As a further improvement of this utility model, a lifting rod is fixedly connected to the center of the surface of the filter box.

[0010] As a further embodiment of this utility model: an electric heating tube is fixedly connected to the inner wall of the sterilization tank, a temperature sensor is fixedly connected to the inner wall of the sterilization tank, an installation block is also fixedly connected to the inner wall of the sterilization tank, and a liquid level sensor is fixedly connected to the bottom surface of the installation block.

[0011] As a further improvement of this utility model: a controller is fixedly connected to the surface of the sterilization tank, and the controller is electrically connected to the electric heating tube, the temperature sensor and the solenoid valve through wires respectively.

[0012] As a further improvement of this utility model, solenoid valves are provided on the surfaces of both the feed pipe and the discharge pipe.

[0013] As a further embodiment of this utility model: a cooling pipe is fixedly sleeved on the surface of the sterilization tank, the cooling pipe is spirally distributed, a conveying pipe is fixedly connected to one side surface of the cooling pipe, a drain pipe is symmetrically fixedly connected to the bottom surface of the cooling pipe, a coolant tank is fixedly connected to the bottom surface of the sterilization tank, both drain pipes are inserted into rectangular slots opened on the surface of the coolant tank, a semiconductor cooler is inserted on the surface of the coolant tank, the coolant tank and the semiconductor cooler are fixedly connected, a conveying pipe is fixedly connected to the upper surface of the cooling pipe, a water pump is fixedly installed on the surface of the coolant tank, and a conveying pipe is fixedly installed on the surface of the sterilization tank and is coaxially fixedly connected to the conveying pipe.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model includes a first rotating rod, a drive motor, a triangular rotating seat, a gear ring, a first gear, a second rotating rod, a rectangular frame, a stirring rod, brush bristles, and a spiral auger blade. On one hand, the drive motor drives the first rotating rod and the spiral stirring blade to rotate, which can stir the milk, making the milk heat more evenly and improving the sterilization effect. At the same time, the stirring rod on the second rotating rod also rotates, further enhancing the stirring force and allowing all parts of the milk to fully contact the high-temperature environment. On the other hand, the second rotating rod rotates by cooperating with the gear ring and the first gear, and the stirring rod is fixedly connected to it in a crisscross pattern on its rod body. This allows the milk to be stirred from different angles, avoiding insufficient sterilization in some areas and ensuring the overall sterilization quality.

[0016] 2. This utility model, by setting a rectangular frame with bristles on the second rotating rod, serves two purposes: First, it cleans the inner wall of the sterilization tank. During the stirring process, the bristles contact the inner wall of the sterilization tank, removing milk residue, dirt, or scale buildup adhering to the tank wall. This helps maintain the cleanliness and hygiene of the sterilization tank, prevents bacterial growth, and ensures that each sterilization process is not contaminated by residues from the previous sterilization, thus guaranteeing the quality of the milk. Second, it enhances the stirring effect. As the rectangular frame rotates with the second rotating rod, it also agitates the milk. Combined with the spiral stirring blades and stirring rod, this makes the milk flow more complex and thorough, allowing the milk to mix more evenly within the sterilization tank, further optimizing the uniformity of heating during the sterilization process.

[0017] 3. By setting up a detachable filter box, this utility model can effectively intercept some impurities mixed in with milk during collection and transportation, preventing these impurities from entering the sterilization tank and contaminating the milk, thereby improving the purity of the milk;

[0018] 4. This invention, by incorporating an electric heating element and a temperature sensor within the sterilization tank, provides a stable heat source for milk sterilization. This heat source quickly raises the milk to the required sterilization temperature, and precise temperature control helps to thoroughly kill harmful microorganisms in the milk, such as bacteria, viruses, and mold, thereby extending the milk's shelf life and ensuring its safety. The temperature sensor monitors the milk temperature in the sterilization tank in real time. This ensures that the milk reaches the required sterilization temperature, preventing incomplete sterilization due to insufficient temperature. Furthermore, it prevents the milk from overheating, which could damage nutrients such as protein denaturation and vitamin loss, thus preserving the milk's nutrition and taste. Moreover, the temperature sensor works in conjunction with the electric heating element. Once the milk reaches the set temperature, the control system adjusts the power of the heating element to achieve precise temperature control, making the sterilization process more scientific and efficient. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the overall structure of the present utility model. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the overall structure of the present utility model. Figure 3 ;

[0022] Figure 4 This is a schematic diagram of the cooling pipe and sterilization tank in this utility model;

[0023] Figure 5 This is a schematic diagram of the pretreatment box and filter box in this utility model;

[0024] Figure 6 This is a cross-sectional structural diagram of the sterilization tank in this utility model;

[0025] Figure 7 This is a schematic diagram of the connection structure between the first gear and the gear ring in this utility model. Figure 1 ;

[0026] Figure 8 This is a schematic diagram of the connection structure between the electric heating tube and the toothed ring in this utility model. Figure 2 ;

[0027] Figure 9 This is a schematic diagram of the connection structure between the movable box and the sterilization tank in this utility model.

[0028] In the diagram: 1. Sterilization tank; 2. Support leg; 3. Feed pipe; 4. First rotating rod; 5. Drive motor; 6. Triangular rotating seat; 7. Gear ring; 8. First gear; 9. Second rotating rod; 10. Rectangular frame; 11. Stirring rod; 12. Brush bristles; 13. Spiral auger blade; 14. Pretreatment box; 15. Filter box; 16. Lifting rod; 17. Strip slider; 18. Mounting positioning groove; 20. Mounting block; 21. Liquid level sensor; 22. Electric heating element; 23. Controller; 24. Solenoid valve; 25. Discharge pipe; 26. Coolant tank; 27. Cooling pipe; 28. Drain pipe; 29. ​​Semiconductor refrigerator; 30. Conveying pipe; 31. Water pump; 32. Temperature sensor. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] like Figures 1 to 9 As shown, an immersion sterilizer includes a sterilization tank 1, support legs 2, a feed pipe 3, and a discharge pipe 25. The support legs 2 are fixedly connected to the surface of the sterilization tank 1 in a circular array, and the installation position of the support legs 2 is close to the bottom surface of the sterilization tank 1. The feed pipe 3 is fixedly connected above one side surface of the sterilization tank 1 and is connected to the sterilization tank 1. The discharge pipe 25 is fixedly connected to the bottom surface of the sterilization tank 1, and the installation position of the discharge pipe 25 is located on the bottom surface of the sterilization tank 1 near the outer periphery.

[0032] A drive motor 5 is fixedly mounted on the surface of the sterilization tank 1. A first rotating rod 4 is rotatably connected at the center of the inner wall of the sterilization tank 1. The top of the first rotating rod 4 is coaxially fixedly connected to the output end of the drive motor 5. A spiral auger plate 13 is fixedly sleeved on the surface of the first rotating rod 4. A triangular rotating seat 6 is fixedly sleeved on the surface of the rod body of the first rotating rod 4. The installation position of the triangular rotating seat 6 is close to the inner top of the sterilization tank 1. The bottom surface of the triangular rotating seat 6 is rotatably connected to second rotating rods 9 in a circular array. A first gear 8 is fixedly sleeved on the surface of the rod body of each second rotating rod 9. A toothed ring 7 is fixedly connected to the inner wall of the sterilization tank 1 through a connecting column. The installation height of the gear ring 7 is the same as that of the first gear 8. The first gear 8 and the gear ring 7 are meshed and connected. Each second rotating rod 9 has a stirring rod 11 fixedly connected to it in a cross pattern. In use, the first rotating rod 4 and the spiral auger blade 13 are driven to rotate by the drive motor 5, which can stir the milk, making the milk heat more evenly and improving the sterilization effect. At the same time, the stirring rod 11 on the second rotating rod 9 will also rotate, further enhancing the stirring force. It can stir the milk from different angles, so that all parts of the milk can fully contact the high temperature environment, avoiding insufficient sterilization in some areas and ensuring the overall sterilization quality.

[0033] Example 2

[0034] In addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0035] Each second rotating rod 9 has a rectangular frame 10 fixedly fitted onto its surface. The rectangular frame 10 is installed on the outside of the stirring rod 11, and the rectangular frame 10 and the stirring rod 11 are fixedly connected. Brush bristles 12 are fixedly connected to both sides of the rectangular frame 10. During the stirring process, the brush bristles 12 contact the inner wall of the sterilization tank 1 and can brush away milk residue, dirt, or scale generated during the sterilization process that are attached to the tank wall. This helps to keep the inside of the sterilization tank 1 clean and hygienic, prevents bacterial growth, and ensures that each sterilization process is not contaminated by the residue from the previous sterilization process, thus guaranteeing the quality of the milk.

[0036] A pretreatment box 14 is fixedly connected to the top of the feed pipe 3. The inner wall of the pretreatment box 14 has symmetrically formed mounting and positioning grooves 18. A filter box 15 is installed inside the pretreatment box 14. Filter holes are formed on the bottom surface of the filter box 15. Strip-shaped sliders 17 are symmetrically fixedly connected to the surface of the filter box 15 and are inserted into the mounting and positioning grooves 18. During the production and transportation of milk, some impurities, such as cow hair, dust particles, and grass residue, may be mixed in. The filter box 15 can effectively intercept these impurities and prevent them from entering the sterilization tank 1. If these impurities enter the sterilization tank 1, they may scorch during the sterilization process, affecting the taste and quality of the milk, and may even damage the sterilization equipment.

[0037] A lifting rod 16 is fixedly connected to the center of the surface of the filter box 15, which facilitates the disassembly and maintenance of the filter box 15 in the future.

[0038] Example 3

[0039] In addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0040] An electric heating element 22 is fixedly connected to the inner wall of the sterilization tank 1. A temperature sensor 32 is also fixedly connected to the inner wall of the sterilization tank 1. An installation block 20 is also fixedly connected to the inner wall of the sterilization tank 1. A liquid level sensor 21 is fixedly connected to the bottom of the installation block 20. The electric heating element 22 can quickly heat the milk to the temperature required for sterilization. The temperature sensor 32 works in conjunction with the electric heating element 22. When the milk reaches the set temperature, the power of the electric heating element is adjusted by the control system to achieve precise temperature control, making the sterilization process more scientific and efficient.

[0041] Both the feed pipe 3 and the discharge pipe 25 are equipped with solenoid valves to control the flow of milk.

[0042] A controller 23 is fixedly connected to the surface of the sterilization tank 1. The controller 23 is electrically connected to the electric heating tube 22, the temperature sensor 32 and the solenoid valve through wires, which can extend the running time, greatly improve the production capacity and reduce the waste of materials and energy. With its extremely fast heating speed and extremely short holding time, the instant sterilization technology of this system better guarantees the nutritional value of the product.

[0043] Cooling pipes 27 are fixedly fitted onto the surface of the sterilization tank 1. The cooling pipes 27 are spirally distributed. A delivery pipe 30 is fixedly connected to one side of the cooling pipe 27. A drain pipe 28 is symmetrically fixedly connected to the bottom of the cooling pipe 27. A coolant tank 26 is fixedly connected to the bottom of the sterilization tank 1. Both drain pipes 28 are inserted into rectangular slots on the surface of the coolant tank 26. A semiconductor cooler 29 is inserted into the surface of the coolant tank 26. The coolant tank 26 and the semiconductor cooler 29 are fixedly connected. A delivery pipe 30 is fixedly connected to the upper surface of the cooling pipes 27. A water pump 31 is fixedly installed on the surface of the coolant tank 26. A delivery pipe 30 is fixedly installed on the surface of the sterilization tank 1. The spiral cooling pipes 27 increase the contact area with the sterilization tank 1, which can absorb the heat of the milk more efficiently, so that the milk can be cooled down quickly after sterilization.

[0044] Working principle: When in use, milk is first poured into filter box 15 for filtration. The filter holes on its surface can effectively intercept impurities mixed into the milk during production and transportation, such as cow hair, dust, and grass residue. This can prevent impurities from entering sterilization tank 1 and burning during sterilization, affecting milk quality and damaging equipment. In addition, the lifting rod 16 in the center of filter box 15 facilitates disassembly and maintenance in the later stage, ensuring the purity of milk raw materials for each sterilization and improving the overall product quality.

[0045] During feeding, the amount of milk inside the sterilization tank 1 increases. When the highest liquid level of the milk comes into contact with the liquid level sensor 21, the liquid level sensor 21 sends the liquid level signal to the controller, and the controller then controls the solenoid valve on the surface of the feed pipe 3 to close.

[0046] Once feeding is complete, the drive motor 5 on the surface of the sterilization tank 1 is activated, driving the first rotating rod 4 and the spiral auger blades 13 to rotate, stirring the milk and making it heat more evenly, thus improving the sterilization effect. Simultaneously, the triangular rotating seat 6 on the first rotating rod 4 drives the second rotating rod 9, which is arranged in a circular array, to rotate. Because the first gear 8 on the second rotating rod 9 meshes with the gear ring 7 on the inner wall of the sterilization tank 1, the stirring rods 11, which are cross-fixed on the second rotating rod 9, stir the milk from different angles, further enhancing the stirring force and ensuring that all parts of the milk are fully exposed to the high-temperature environment, avoiding insufficient sterilization in certain areas and improving the sterilization quality.

[0047] Moreover, during the stirring process, the bristles 12 on both sides of the rectangular frame 10 on the surface of the second rotating rod 9 come into contact with the inner wall of the sterilization tank 1, brushing away milk residue, dirt and scale generated during sterilization on the tank wall, keeping the tank clean and hygienic, preventing bacterial growth, avoiding contamination of the subsequent sterilization process by residual substances, and ensuring stable milk quality.

[0048] In addition, the electric heating tube 22 on the inner wall of the sterilization tank 1 provides a stable heat source for milk sterilization, which can quickly heat the milk to the required temperature. The temperature sensor 32 monitors the milk temperature in real time and feeds it back to the controller 23. The controller 23 accurately adjusts the power of the electric heating tube 22 according to the preset temperature to ensure that the sterilization process is scientific and efficient and better preserves the nutritional value of the milk.

[0049] After sterilization, the coolant in the coolant tank 26, driven by the water pump 31, enters the spirally distributed cooling pipe 27 through the delivery pipe 30 on one side of the cooling pipe 27. The increased contact area efficiently absorbs heat from the milk, rapidly cooling it down. The cooled coolant, after absorbing heat, returns to the coolant tank 26 through the drain pipe 28. After being cooled by the semiconductor refrigerator 29, it can be recycled. The cooled milk is discharged through the discharge pipe 25. The solenoid valves on the surface of the inlet pipe 3 and the discharge pipe 25 precisely control the flow of milk. The entire process is coordinated by the controller 23, which integrates the operation of the electric heating element 22, temperature sensor 32, liquid level sensor 21, solenoid valves, and other refrigeration-related components. This extends equipment operating time, increases production capacity, reduces material and energy waste, ensures product quality while improving production efficiency and economic benefits, and meets the needs of modern dairy production.

[0050] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A immersion sterilization machine comprising a sterilization tank (1), a supporting leg (2), a feeding pipe (3) and a discharging pipe (25), characterized in that: The support leg (2) is fixedly connected in a circular array on the surface of the sterilization tank (1), and the installation position of the support leg (2) is close to the bottom surface of the sterilization tank (1); the feeding pipe (3) is fixedly connected above one side surface of the sterilization tank (1), and the feeding pipe (3) is communicated with the sterilization tank (1); and the discharging pipe (25) is fixedly connected to the bottom surface of the sterilization tank (1), and the installation position of the discharging pipe (25) is located at a position close to the outer periphery of the bottom surface of the sterilization tank (1). A driving motor (5) is fixedly installed on the surface of the sterilization tank (1); a first rotating rod (4) is rotatably connected to the central position of the inner wall surface of the sterilization tank (1); the top end of the first rotating rod (4) is fixedly connected in coaxial line with the output end of the driving motor (5); a spiral auger piece (13) is fixedly sleeved on the surface of the first rotating rod (4); a triangular rotating seat (6) is fixedly sleeved on the rod body surface of the first rotating rod (4); the installation position of the triangular rotating seat (6) is close to the inner top of the sterilization tank (1); a second rotating rod (9) is rotatably connected in a circular array to the bottom surface of the triangular rotating seat (6); a first gear (8) is fixedly sleeved on the rod body surface of each second rotating rod (9); a tooth ring (7) is fixedly connected to the inner wall surface of the sterilization tank (1) through a connecting column; the installation height of the tooth ring (7) is consistent with the installation height of the first gear (8); the first gear (8) is meshingly connected with the tooth ring (7); and a stirring rod (11) is crosswise fixedly connected to the rod body of each second rotating rod (9).

2. The immersion sterilizer according to claim 1, characterized by: A rectangular frame (10) is fixedly sleeved on the rod body surface of each second rotating rod (9); the installation position of the rectangular frame (10) is located outside the stirring rod (11); the rectangular frame (10) is fixedly connected with the stirring rod (11); and brush hairs (12) are fixedly connected to the two side surfaces of the rectangular frame (10).

3. The immersion sterilizer according to claim 1, characterized by: A pretreatment box (14) is fixedly connected to the top end of the feeding pipe (3); installation positioning grooves (18) are symmetrically formed in the inner wall surface of the pretreatment box (14); a filter box (15) is arranged in the interior of the pretreatment box (14); filter holes are formed in the bottom surface of the filter box (15); strip-shaped sliding blocks (17) are fixedly connected in symmetry to the surface of the filter box (15); and the strip-shaped sliding blocks (17) are inserted into the installation positioning grooves (18).

4. The immersion sterilizer according to claim 3, characterized by: A pull rod (16) is fixedly connected to the surface central position of the filter box (15).

5. The immersion sterilizer according to claim 4, characterized in that: An electric heating pipe (22) is fixedly connected to the inner wall surface of the sterilization tank (1); a temperature sensor (32) is fixedly connected to the inner wall surface of the sterilization tank (1); an installation block (20) is further fixedly connected to the inner wall surface of the sterilization tank (1); and a liquid level sensor (21) is fixedly connected to the bottom surface of the installation block (20).

6. The immersion sterilizer according to claim 5, characterized in that: Electromagnetic valves (24) are arranged on the surfaces of the feeding pipe (3) and the discharging pipe (25).

7. The immersion sterilizer according to claim 3, characterized by: A controller (23) is fixedly connected to the surface of the sterilization tank (1); and the controller (23) is electrically connected with the electric heating pipe (22), the temperature sensor (32) and the electromagnetic valve through wires.

8. The immersion sterilizer according to claim 3, characterized by: The can body surface of the sterilization tank (1) is fixedly sleeved with a cooling pipe (27), the cooling pipe (27) is spirally distributed, one side surface of the cooling pipe (27) is fixedly connected with a conveying pipe (30), the bottom surface of the cooling pipe (27) is fixedly connected with a liquid discharge pipe (28) in a symmetrical mode, the bottom surface of the sterilization tank (1) is fixedly connected with a cooling liquid tank (26), both the liquid discharge pipes (28) are inserted into the rectangular through slot formed in the surface of the cooling liquid tank (26), the surface of the cooling liquid tank (26) is inserted with a semiconductor refrigerator (29), the cooling liquid tank (26) and the semiconductor refrigerator (29) are fixedly connected, the upper surface of the cooling pipe (27) is fixedly connected with the conveying pipe (30), the surface of the cooling liquid tank (26) is fixedly installed with a water pump (31), the surface of the sterilization tank (1) is fixedly installed with the conveying pipe (30), and the conveying pipe (30) is fixedly connected in a coaxial mode.

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