A food production cold sterilization device

Abstract

The utility model discloses a food production cold sterilization device, including sterilization jar body, bottled thing placement structure and respectively setting first guide rail and second guide rail group of the both sides of sterilization jar body constitute, and bottled thing placement structure can enter the sterilization jar body through first guide rail when promoting, and the sterilization jar body can carry out cold sterilization work to the bottled thing that the bottled thing placement structure in is placed in the bottled thing that enters its inside. The utility model discloses through the setting of conveying structure and push material structure, can be on first guide rail bottled thing placement structure carries out the work of automatic filling bottled thing, and the sterilization process can rotate second cylinder through drive motor, so that bottled thing in second cylinder can fully contact with the sterilization liquid in sterilization jar body, make its sterilization effect better, and through the setting of first electric push telescopic link, can make second guide rail lean, and through the setting of second electric telescopic link, can put bottled thing in second cylinder, and further realize the purpose of convenient material taking.

Description

Technical Field

[0001] This utility model relates to the field of food sterilization technology, specifically to a cold sterilization device for food production. Background Technology

[0002] Compound fruit and vegetable juice products are rich in various vitamins, oligosaccharides, organic acids, and active substances, which are all natural nutrients. They have significant effects on improving nutritional health, regulating gastrointestinal function, and enhancing immunity. In the process of preparing and sterilizing compound fruit and vegetable juice products, in order to maintain the color, aroma, taste, nutritional components, and freshness of the juice, ultra-high pressure low temperature sterilization (HPP) technology is currently widely used to sterilize the juice.

[0003] HPP (High Pressure Processing) technology applies static liquid pressure of 100-600 MPa to packaged food for a specific period of time, thereby destroying enzymes, sterilizing, and improving the structure and properties of the material. Its sterilization mechanism is achieved by altering the protein and enzyme structure of microbial cells, inhibiting enzyme activity, and killing a large number of pathogenic and spoilage bacteria in the juice, without affecting the sensory and nutritional value of the food. Therefore, HPP technology is widely used in the juice industry.

[0004] Existing HPP (High Pressure Processing) sterilization equipment consists of a sterilization tank, a capsule-shaped storage basket, and guide rails on both sides of the sterilization tank. For sterilizing bottled food, the capsule-shaped storage basket neatly holds the fruit and vegetable juice bottles to be sterilized. The basket is then pushed into the sterilization tank via the guide rails. The inlet and outlet of the sterilization tank are then closed, and the tank performs high-pressure, low-temperature sterilization on the juice bottles, achieving the sterilization purpose. However, the existing capsule-shaped storage basket is inconvenient for loading and unloading the juice bottles. Loading requires manual stacking of the bottles, and unloading also requires manual removal of the bottles one by one, which is time-consuming, labor-intensive, and affects work progress. Therefore, a cold sterilization device for food production that facilitates loading and unloading is proposed to solve these problems. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a cold sterilization device for food production.

[0006] This utility model is achieved through the following technical solution:

[0007] A cold sterilization device for food production includes a sterilization tank body, a bottle placement structure, and a first guide rail and a second guide rail respectively disposed on both sides of the sterilization tank body. When the bottle placement structure is pushed, it can enter the sterilization tank body through the first guide rail. The sterilization tank body can perform cold sterilization on the bottled contents placed in the bottle placement structure. The bottle placement structure can be pulled out of the sterilization tank body through the second guide rail. A first leg is fixed at each of the four corners of the bottom end of the first guide rail, and the bottom end of the first leg is fixed to the ground. One end of the first guide rail is aligned with the feed inlet of the sterilization tank body, and the other end of the first guide rail is provided with a conveying structure. The bottle placement structure is slidably placed on the first guide rail, and a pushing structure is installed on the conveying structure.

[0008] Preferably, one end of the second guide rail is aligned with the discharge port of the sterilization tank body, and a second support leg is hinged to the bottom end of the second guide rail near the discharge port of the sterilization tank body. The bottom end of the second support leg is fixed to the ground. An n-shaped frame is provided at the other end of the second guide rail. The n-shaped frame is fixed to the ground. A first electric push telescopic rod is hinged to the inner top surface of the n-shaped frame through a pin. A limit ring is hinged to the telescopic end of the first electric push telescopic rod through a pin. The bottom end of the limit ring is fixed to the second guide rail. A receiving groove is provided between the two vertical plates of the n-shaped frame. The receiving groove is placed on the ground.

[0009] Preferably, the bottled item placement structure includes a first cylindrical body, a semi-circular plate fixed to one end of the first cylindrical body, a central shaft extending transversely through the semi-circular plate, the central shaft being rotatably connected to the semi-circular plate via a bearing, a first gear fixed to one end of the central shaft, a first cover fixed to the side wall of the semi-circular plate, the first gear being disposed within the first cover, a second cover fixed to the side wall of the first cover, a drive motor fixed within the second cover, the output shaft of the drive motor penetrating the first cover and extending into it to fix a second gear, the second gear meshing with the first gear, an adsorption plate fixed to the side wall of the semi-circular plate, and rotating disks fixedly fitted at both ends and the center of the central shaft, all three rotating disks being disposed within the first cylindrical body and connected to it. The first cylinder is rotated and connected to a rotating disk. Several second cylinders are evenly distributed around its axis. The two ends of each second cylinder are aligned with the two ends of the first cylinder. Each second cylinder passes through a rotating disk and is fixedly connected to it at the contact point. Each second cylinder has a first fixing plate and a second fixing plate on its outer side. The first fixing plate is fixed to a rotating disk near the semicircular plate, and the second fixing plate is fixed to a rotating disk on the opposite side. A first square limiting rod passes through the first fixing plate and is rotatably connected to it. One end of the first square limiting rod penetrates the outer wall of the second cylinder and extends into it. The first square limiting rod is slidably connected to the contact point of the second cylinder. One end face of the inner body has a chamfer. A first limiting ring is fixedly fitted on the first square limiting rod. One side of the first limiting ring is in contact with the outer wall of the second cylinder. A first spring is fixed between the other side of the first limiting ring and the first fixing plate. The first spring is fitted on the first square limiting rod. A second square limiting rod is inserted through the second fixing plate. The second square limiting rod is slidably connected to the second fixing plate at its contact point. One end of the second square limiting rod penetrates the outer wall of the second cylinder and extends into it. The second square limiting rod is slidably connected to the second cylinder at its contact point. A second limiting ring is fixedly fitted on the second square limiting rod. One side of the second limiting ring is in contact with the outer wall of the second cylinder. A first limiting ring is fixed between the other side of the second limiting ring and the second fixing plate. A second spring is sleeved on a second square limiting rod. A through groove is provided on the second square limiting rod, and an inclined block is inserted into the through groove. The inclined block slides within the through groove. Several second fixing plates have the same mounting plate fixed to their side ends. A second electric telescopic rod is fixedly installed on the side wall of the mounting plate. The telescopic end of the second electric telescopic rod penetrates the mounting plate and is fixed with a connecting plate. The inclined block is fixed on the connecting plate. A third cover is also fixed on the side wall of the semi-circular plate. A storage battery is fixedly installed inside the third cover. The second electric telescopic rod and the drive motor are electrically connected to the storage battery through wires. Multiple through holes are provided on the outer walls of the first cylinder and the second cylinder. The inner diameter of the first cylinder is the same as the inner diameter of the limiting ring.

[0010] Preferably, the conveying structure includes a conveyor belt, a drive roller, a driven roller, and a frame. The drive roller and the driven roller are connected by a conveyor belt drive. Both the drive roller and the driven roller are rotatably mounted on the frame. The top surface of the conveyor belt is aligned with the bottom surface of a second cylinder at the lowest end. A motor for driving the drive roller is fixedly mounted on the side wall of the frame.

[0011] Preferably, the pushing structure includes a vertical plate fixed to the side wall of the frame, a baffle fixed to the side wall of the vertical plate, a control switch installed on the baffle, the baffle being located at the upper end of the conveyor belt, two connecting rods symmetrically fixed to the top of the vertical plate, the same electromagnet fixed to the top of the two connecting rods, the electromagnet being in contact with the adsorption plate, a third electric telescopic rod fixedly installed to the side wall of the vertical plate, the telescopic end of the third electric telescopic rod penetrating the vertical plate and fixed with a push plate, and the control switch, electromagnet and third electric telescopic rod being electrically connected to an external power supply through wires.

[0012] Compared with existing technologies, the beneficial effects of this utility model are:

[0013] This invention, through the design of a conveying structure and a pushing structure, enables automatic filling of bottles onto a first guide rail. During the sterilization process, a drive motor rotates the second cylinder, ensuring the bottles inside the second cylinder fully contact the sterilizing liquid within the sterilization tank, thus enhancing the sterilization effect. Furthermore, the first electric telescopic rod allows the second guide rail to be tilted, while the second electric telescopic rod releases the bottles from the second cylinder, facilitating convenient material retrieval. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure described in this utility model;

[0015] Figure 2 This is a perspective view of the structure described in this utility model;

[0016] Figure 3 The structure described in this utility model Figure 1 Enlarged view of part A in the middle;

[0017] Figure 4 This is a three-dimensional view of a portion of the structure described in this utility model;

[0018] Figure 5 This utility model describes a partial three-dimensional structure. Figure 1 ;

[0019] Figure 6 This is a partial sectional view of the structure described in this utility model.

[0020] In the diagram: 1. Sterilization tank body; 2. Bottled material placement structure; 3. First guide rail; 4. Second guide rail; 5. First support leg; 6. Conveying structure; 7. Pushing structure; 8. Second support leg; 9. N-shaped frame; 10. First electric push telescopic rod; 11. Limiting ring; 12. Receiving groove; 13. First cylinder; 14. Semicircular plate; 15. Central shaft; 16. First gear; 17. First cover; 18. Second cover; 19. Drive motor; 20. Second gear; 21. Adsorption plate; 22. Rotary disk; 23. Second cylinder; 24. First... Fixed plate 24, second fixed plate 25, first square limiting rod 26, first limiting ring 27, first spring 28, second square limiting rod 29, second limiting ring 30, second spring 31, through groove 32, inclined block 33, mounting plate 34, second electric telescopic rod 35, connecting plate 36, third cover 37, conveyor belt 38, frame 39, vertical plate 40, baffle 41, control switch 42, connecting rod 43, electromagnet 44, third electric telescopic rod 45, push plate 46. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 As shown, a cold sterilization device for food production includes a sterilization tank body 1, a bottled material placement structure 2, and a first guide rail 3 and a second guide rail 4 respectively disposed on both sides of the sterilization tank body 1. When the bottled material placement structure 2 is pushed, it can enter the sterilization tank body 1 through the first guide rail 3. The sterilization tank body 1 can perform cold sterilization on the bottled material placed in the bottled material placement structure 2. The bottled material placement structure 2 can be pulled out of the sterilization tank body 1 through the second guide rail 4. The bottom of the first guide rail 3 is fixed with a first support leg 5 at each of the four corners. The bottom of the first support leg 5 is fixed to the ground. One end of the first guide rail 3 is aligned with the feed inlet of the sterilization tank body 1. The other end of the first guide rail 3 is provided with a conveying structure 6. The bottled material placement structure 2 is slidably placed on the first guide rail 3. A pushing structure 7 is installed on the conveying structure 6.

[0023] One end of the second guide rail 4 is aligned with the discharge port of the sterilization tank body 1, and a second support leg 8 is hinged to the bottom end of the second guide rail 4 near the discharge port of the sterilization tank body 1. The bottom end of the second support leg 8 is fixed to the ground. An n-shaped frame 9 is provided at the other end of the second guide rail 4. The n-shaped frame 9 is fixed to the ground. A first electric push telescopic rod 10 is hinged to the inner top surface of the n-shaped frame 9 by a pin. A limit ring 11 is hinged to the telescopic end of the first electric push telescopic rod 10 by a pin. The bottom end of the limit ring 11 is fixed to the second guide rail 4. A receiving groove 12 is provided between the two vertical plates of the n-shaped frame 9. The receiving groove 12 is placed on the ground.

[0024] The bottled item placement structure 2 includes a first cylindrical body 13, with a semi-circular plate 14 fixed to one end of the first cylindrical body 13. A central shaft 15 is transversely connected to the semi-circular plate 14 via a bearing. A first gear 16 is fixed to one end of the central shaft 15. A first cover 17 is fixed to the side wall of the semi-circular plate 14, with the first gear 16 disposed inside the first cover 17. A second cover 18 is fixed to the side wall of the first cover 17, with a drive motor 19 fixed inside the second cover 18. The output shaft of the drive motor 19 penetrates the first cover 17 and extends into it, where a second gear 20 is fixed. The second gear 20 meshes with the first gear 16. An adsorption plate 2 is fixed to the side wall of the semi-circular plate 14. 1. A rotating disk 22 is fixedly fitted at both ends and the center of the central shaft 15. All three rotating disks 22 are disposed within and rotatably connected to the first cylinder 13. Several second cylinders 23 are evenly distributed within the first cylinder 13, with their axes centered on each other. The ends of each second cylinder 23 are aligned with the ends of the first cylinder 13. The second cylinders 23 penetrate the rotating disks 22 and are fixedly connected to them at their contact points. Each second cylinder 23 has a first fixing plate 24 and a second fixing plate 25 on its outer side. The first fixing plate 24 is fixed to a rotating disk 22 near the semicircular plate 14, and the second fixing plate 25 is fixed to a rotating disk 22 on the other side. A first square limiting rod 2 is provided through the first fixing plate 24. 6. The first square limiting rod 26 is rotatably connected to the first fixing plate 24. One end of the first square limiting rod 26 penetrates the outer wall of the second cylinder 23 and extends into it. The contact point between the first square limiting rod 26 and the second cylinder 23 is slidably connected. One end face of the first square limiting rod 26 extending into the second cylinder 23 has a chamfer. A first limiting ring 27 is fixedly sleeved on the first square limiting rod 26. One side of the first limiting ring 27 is in contact with the outer wall of the second cylinder 23. A first spring 28 is fixedly installed between the other side of the first limiting ring 27 and the first fixing plate 24. The first spring 28 is sleeved on the first square limiting rod 26. A second square limiting rod 29 is penetrated through the second fixing plate 25. The second square limiting rod 29 and... The second fixing plate 25 is slidably connected at its contact point. One end of the second square limiting rod 29 penetrates the outer wall of the second cylinder 23 and extends into it. The second square limiting rod 29 is slidably connected to the second cylinder 23 at its contact point. A second limiting ring 30 is fixedly sleeved on the second square limiting rod 29. One side of the second limiting ring 30 is in contact with the outer wall of the second cylinder 23, and a second spring 31 is fixedly provided between the other side of the second limiting ring 30 and the second fixing plate 25. The second spring 31 is sleeved on the second square limiting rod 29. A through groove 32 is provided on the second square limiting rod 29, and an inclined block 33 is inserted into the through groove 32. The inclined block 33 is slidably disposed in the through groove 32. Several second fixing plates 25 are fixed to the same mounting plate 34 on their side ends.A second electric telescopic rod 35 is fixedly installed on the side wall of the mounting plate 34. The telescopic end of the second electric telescopic rod 35 penetrates the mounting plate 34 and is fixed with a connecting plate 36. The inclined block 33 is fixed on the connecting plate 36. A third cover 37 is also fixed on the side wall of the semi-circular plate 14. A storage battery is fixedly installed inside the third cover 37. The second electric telescopic rod 35 and the drive motor 19 are both electrically connected to the storage battery through wires. Multiple through holes are opened on the outer walls of the first cylinder 13 and the second cylinder 23. The inner diameter of the first cylinder 13 is the same as the inner diameter of the limiting ring 11.

[0025] The conveying structure 6 includes a conveyor belt 38, a drive roller, a driven roller, and a frame 39. The drive roller and the driven roller are connected by the conveyor belt 38. Both the drive roller and the driven roller are rotatably mounted on the frame 39. The top surface of the conveyor belt 38 is aligned with the bottom surface of the inner side of the second cylinder 23 at the bottom. A motor for driving the drive roller is fixedly installed on the side wall of the frame 39.

[0026] The pushing structure 7 includes a vertical plate 40 fixed to the side wall of the frame 39. A baffle 41 is fixed to the side wall of the vertical plate 40. A control switch 42 is installed on the baffle 41. The baffle 41 is located at the upper end of the conveyor belt 38. Two connecting rods 43 are symmetrically fixed to the top of the vertical plate 40. The top of the two connecting rods 43 is fixed with the same electromagnet 44. The electromagnet 44 is attached to the adsorption plate 21. A third electric telescopic rod 45 is fixedly installed on the side wall of the vertical plate 40. The telescopic end of the third electric telescopic rod 45 penetrates the vertical plate 40 and is fixed with a push plate 46. The control switch 42, the electromagnet 44 and the third electric telescopic rod 45 are all electrically connected to an external power supply through wires.

[0027] Working principle;

[0028] In use, the bottle placement structure 2 is positioned near the conveying structure 6 by electromagnet 44. Electromagnet 44 fixes the bottle placement structure 2 via adsorption plate 21. Bottles requiring sterilization are evenly conveyed to one side of the bottle placement structure 2 via the conveying structure 6. As the conveyor belt 38 conveys the bottle, when it touches the control switch 42 on the baffle 41, the telescopic end of the third electric telescopic rod 45 quickly retracts, pushing the bottle that has touched the control switch 42 towards the bottle placement structure 2 via the push plate 46. At this time, the bottle is pushed into the second cylinder 23. When the bottle enters the second cylinder 23, the chamfer on the first square limiting rod 26 presses against the first square limiting rod 26, pushing the chamfered end of the first square limiting rod 26 out of the second cylinder 23. After the bottle has completely passed the first square limiting rod 26, the push plate 46 retracts to its original position along with the telescopic end of the third electric telescopic rod 45. At this time, the first square limiting rod 2... 6 is reset under the action of the first spring 28, so that the bottled contents entering the second cylinder 23 are limited between the first square limiting rod 26 and the second square limiting rod 29, preventing the bottled contents from falling out of the second cylinder 23 during sterilization. When the second cylinder 23 is full of bottled contents, the drive motor 19 is controlled to run, so that the other second cylinders 23 without bottled contents are moved to the bottom. The bottom surface of the second cylinder 23 at the bottom will be aligned with the top surface of the conveyor belt 38. Then, with the cooperation of the conveying structure 6 and the pushing structure 7, the automatic loading of bottled contents into the second cylinder 23 continues until all the second cylinders 23 are full of bottled contents. Then, the conveying structure 6 and the electromagnet 44 are stopped, and the bottled contents placement structure 2 is pushed and sent into the sterilization tank body 1 through the first guide rail 3. The inlet and outlet on both sides of the sterilization tank body 1 are closed, and the bottled contents in the sterilization tank body are subjected to high pressure and low temperature sterilization, thereby achieving the purpose of sterilization. After sterilization, the inlets and outlets on both sides of the sterilization tank body 1 are opened. The bottled material placement structure 2 is pulled out onto the second guide rail 4 through the outlet of the sterilization tank body 1. Then, the extension end of the first electric push telescopic rod 10 is extended. At this time, the second guide rail 4 rotates counterclockwise around the hinge point with the second support leg 8. As the second guide rail 4 rotates, it becomes inclined. At this time, one end of the first cylinder 13 fits onto the limiting ring 11. Then, the extension end of the second electric telescopic rod 35 is retracted. The extension end of the second electric telescopic rod 35 pulls multiple inclined blocks 33 simultaneously through the connecting plate 36. When the inclined blocks 33 are pulled, they squeeze one side of the through groove 32, causing the second square limiting rod 29 to be pushed out from the second cylinder 23. At this time, the bottled material in the second cylinder 23 will slide from the second cylinder 23 into the receiving groove 12, thus achieving the purpose of convenient material retrieval.Before pushing the bottle placement structure 2 into the sterilization tank body 1, the drive motor 19 can be started in advance. This ensures that after the bottle placement structure 2 enters the sterilization tank body 1, the multiple second cylinders 23 remain rotating within the first cylinder 13. This facilitates uniform and comprehensive sterilization of the bottles within the second cylinders 23, resulting in better sterilization. After unloading the bottles from the second cylinders 23, the telescopic end of the first electric pusher 10 is retracted to its original position. Then, the bottle placement structure 2 on the second guide rail 4 is moved onto the first guide rail 3, and bottles are continuously filled via the conveying structure 6 and the pushing structure 7 for continuous sterilization.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cold sterilization device for food production, comprising a sterilization tank body (1), a bottled material placement structure (2), and a first guide rail (3) and a second guide rail (4) respectively disposed on both sides of the sterilization tank body (1), wherein when the bottled material placement structure (2) is pushed, it can enter the sterilization tank body (1) through the first guide rail (3), the sterilization tank body (1) can perform cold sterilization on the bottled material placed in the bottled material placement structure (2) inside it, and the bottled material placement structure (2) can be pulled out from the sterilization tank body (1) through the second guide rail (4), characterized in that; The first guide rail (3) has four corners fixed with first legs (5), the bottom of the first legs (5) is fixed on the ground, one end of the first guide rail (3) is aligned with the feed inlet of the sterilization tank body (1), the other end of the first guide rail (3) is provided with a conveying structure (6), the bottled material placement structure (2) is slidably placed on the first guide rail (3), and a pusher structure (7) is installed on the conveying structure (6).

2. The food production cold sterilization device according to claim 1, characterized in that: One end of the second guide rail (4) is aligned with the discharge port of the sterilization tank body (1), and the bottom end of the second guide rail (4) is hinged to the discharge port of the sterilization tank body (1) with a second support leg (8). The bottom end of the second support leg (8) is fixed on the ground. An n-shaped frame (9) is provided at the other end of the second guide rail (4). The n-shaped frame (9) is fixed on the ground. A first electric push telescopic rod (10) is hinged to the inner top surface of the n-shaped frame (9) by a pin. A limit ring (11) is hinged to the telescopic end of the first electric push telescopic rod (10) by a pin. The bottom end of the limit ring (11) is fixed to the second guide rail (4). A receiving groove (12) is provided between the two vertical plates of the n-shaped frame (9). The receiving groove (12) is placed on the ground.

3. The cold sterilization device for food production according to claim 2, characterized in that: The bottled item placement structure (2) includes a first cylindrical body (13), with a semicircular plate (14) fixed at one end of the first cylindrical body (13). A central shaft (15) is horizontally inserted through the semicircular plate (14), and the central shaft (15) is rotatably connected to the semicircular plate (14) via a bearing. A first gear (16) is fixed at one end of the central shaft (15). A first cover (17) is fixed on the side wall of the semicircular plate (14), and the first gear (16) is disposed inside the first cover (17). A second cover (18) is fixed on the side wall of the first cover (17), and a drive motor (19) is fixed inside the second cover (18). The output shaft of the drive motor (19) penetrates the first cover (17) and extends into it, where a fixed part is located. The second gear (20) meshes with the first gear (16). An adsorption plate (21) is fixed on the side wall of the semicircular plate (14). Rotary disks (22) are fixedly fitted at both ends and the center of the central shaft (15). The three rotating disks (22) are all set inside the first cylinder (13) and rotatedly connected to it. Several second cylinders (23) are evenly distributed inside the first cylinder (13) with its axis as the center. The two ends of the second cylinders (23) are aligned with the two ends of the first cylinder (13). The second cylinders (23) pass through the rotating disks (22) and are fixedly connected to them at the contact point. Each second cylinder (23) is provided with a first fixing plate (24) and a second fixing plate (25) on its outer side. The first fixing plate (24) is fixed on a rotating disk (22) near the semicircular plate (14), and the second fixing plate (25) is fixed on a rotating disk (22) on the other side. A first square limiting rod (26) is provided through the first fixing plate (24). The first square limiting rod (26) is rotatably connected to the first fixing plate (24). One end of the first square limiting rod (26) penetrates the outer wall of the second cylinder (23) and extends into it. The contact point between the first square limiting rod (26) and the second cylinder (23) is slidably connected. One end face of the first square limiting rod (26) extending into the second cylinder (23) is chamfered. A first limiting ring is fixedly fitted on the first square limiting rod (26). (27) One side of the first limiting ring (27) is attached to the outer wall of the second cylinder (23), and the other side of the first limiting ring (27) is fixedly provided with a first spring (28) between it and the first fixing plate (24). The first spring (28) is sleeved on the first square limiting rod (26). The second fixing plate (25) is provided with a second square limiting rod (29) through it. The second square limiting rod (29) is slidably connected to the second fixing plate (25) at the contact point. One end of the second square limiting rod (29) penetrates the outer wall of the second cylinder (23) and extends into it. The second square limiting rod (29) is slidably connected to the second cylinder (23) at the contact point. The second square limiting rod (29) is fixedly sleeved with a second limiting ring (30).One side of the second limiting ring (30) is fitted against the outer wall of the second cylinder (23), and a second spring (31) is fixed between the other side of the second limiting ring (30) and the second fixing plate (25). The second spring (31) is sleeved on the second square limiting rod (29), and a through groove (32) is opened on the second square limiting rod (29). An inclined block (33) is inserted into the through groove (32), and the inclined block (33) slides in the through groove (32). Several second fixing plates (25) are fixed with the same mounting plate (34) on their side ends. A second electric motor is fixedly installed on the side wall of the mounting plate (34). The telescopic rod (35) has its telescopic end penetrating the mounting plate (34) and fixed with a connecting plate (36). The inclined block (33) is fixed on the connecting plate (36). A third cover (37) is also fixed on the side wall of the semi-circular plate (14). A storage battery is fixedly installed inside the third cover (37). The second electric telescopic rod (35) and the drive motor (19) are electrically connected to the storage battery through wires. Multiple through holes are opened on the outer walls of the first cylinder (13) and the second cylinder (23). The inner diameter of the first cylinder (13) is the same as the inner diameter of the limiting ring (11).

4. The cold sterilization device for food production according to claim 3, characterized in that: The conveying structure (6) includes a conveyor belt (38), a drive roller, a driven roller, and a frame (39). The drive roller and the driven roller are connected by the conveyor belt (38). Both the drive roller and the driven roller are rotatably mounted on the frame (39). The top surface of the conveyor belt (38) is aligned with the bottom surface of the inner surface of a second cylinder (23) at the bottom. A motor for driving the drive roller is fixedly installed on the side wall of the frame (39).

5. The cold sterilization device for food production according to claim 4, characterized in that: The pushing structure (7) includes a vertical plate (40) fixed on the side wall of the frame (39), a baffle (41) fixed on the side wall of the vertical plate (40), a control switch (42) installed on the baffle (41), the baffle (41) being set at the upper end of the conveyor belt (38), two connecting rods (43) symmetrically fixed at the top of the vertical plate (40), the same electromagnet (44) fixed at the top of the two connecting rods (43), the electromagnet (44) being in contact with the adsorption plate (21), a third electric telescopic rod (45) fixedly installed on the side wall of the vertical plate (40), the telescopic end of the third electric telescopic rod (45) penetrating the vertical plate (40) and fixed with a push plate (46), the control switch (42), the electromagnet (44) and the third electric telescopic rod (45) being electrically connected to an external power supply through wires.

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