Preserved vegetable production sterilization equipment

By designing a pre-made vegetable production sterilization equipment that includes sterilization boxes, placement cylinders, drive components, rinsing sterilization components, adjustment components and air-drying components, the time-consuming and labor-intensive problem of manual sterilization is solved, efficient and automated sterilization and air-drying treatment are achieved, and production efficiency and product quality are improved.

CN222787018UActive Publication Date: 2025-04-25GUANGDONG YUEJINGYUAN AGRICULTURAL TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202421821996.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-30
Publication Date
2025-04-25
Estimated Expiration
2034-07-30

AI Technical Summary

Technical Problem

In the production of existing pre-made vegetables, manually using spray heads to sterilize and rinse raw materials is time-consuming and labor-intensive, which reduces sterilization efficiency and production efficiency, and increases the burden on staff.

Method used

A pre-made dish production sterilization equipment is designed, including a sterilization box, a placing cylinder, a drive assembly, a rinse sterilization assembly, a conditioning assembly and an air-drying assembly. Through the collaborative work of these components, the automated, comprehensive sterilization and air-drying of raw materials can be achieved.

Benefits of technology

It improves the sterilization efficiency and production efficiency of raw materials, reduces the work burden of staff, and ensures the uniform sterilization of raw materials, and improves the quality of pre-made dishes.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of prefabricated dishes, in particular to prefabricated dish production sterilization equipment. Comprising a sterilization box and further comprises two placing cylinders which are arranged in the sterilization box. Through the arrangement of the mounting assembly, a worker can conveniently mount and dismount the placement barrel, so that the worker can conveniently carry out feeding and discharging treatment on raw materials, through the arrangement of the driving assembly, the sterilization effect of the raw materials can be effectively improved, and through the arrangement of the flushing sterilization assembly, the sterilization efficiency is improved. Through the arrangement of the flushing and sterilizing assembly, saline water flushing and sterilizing treatment can be effectively conducted on raw materials, through the arrangement of the adjusting assembly, the horizontal position of the flushing and sterilizing assembly can be conveniently adjusted, so that the sterilizing effect of the flushing and sterilizing assembly can be effectively improved, and through the arrangement of the air drying assembly, the sterilized raw materials can be effectively subjected to air drying treatment; therefore, the production efficiency of the prefabricated vegetables is effectively improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of pre-prepared dishes, in particular to a pre-prepared dish production sterilization device. Background Art

[0002] Pre-prepared meals refer to convenient dishes that use modern standardized assembly line operations to carry out preliminary preparation of dish ingredients, simplify the production steps, and are hygienically and scientifically packaged, and can be eaten directly through heating or steaming. When producing and processing pre-prepared meals, a pre-prepared meal production sterilization equipment is required to sterilize the pre-prepared meal ingredients.

[0003] At present, when sterilizing the raw materials of pre-prepared dishes, the staff generally uses a nozzle with saline to manually rinse and sterilize the raw materials. Although this method can also effectively rinse and sterilize the raw materials, the sterilization process is time-consuming and labor-intensive, thereby reducing the sterilization efficiency of the raw materials, thereby reducing the production efficiency of the pre-prepared dishes, and will greatly increase the workload of the staff. In addition, manual rinsing may also result in uneven and incomplete rinsing of the raw materials, which will lead to unsatisfactory sterilization effects of the raw materials. In addition, after the raw materials are rinsed, they are generally allowed to dry naturally, which also reduces the production efficiency of the pre-prepared dishes.

[0004] Therefore, those skilled in the art provide a pre-prepared food production sterilization device to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to provide a pre-prepared food production sterilization device, including a sterilization box, and also includes:

[0006] Two placement cylinders are both arranged inside the sterilization box, the two placement cylinders are fixedly connected by bolts, and the bottom of the sterilization box is connected to a drain pipe through a solenoid valve;

[0007] An installation assembly is symmetrically arranged inside the sterilization box and is used to fix the placement cylinder and the sterilization box;

[0008] A driving assembly is arranged outside the sterilization box and is used to drive the placement cylinder to rotate, so that the material inside the placement cylinder can be sterilized and rinsed more comprehensively;

[0009] A flushing and sterilizing component is arranged above the sterilization box and is used to flush and sterilize the materials placed inside the cylinder;

[0010] The adjusting components are respectively arranged on the front end surface and the rear end surface of the sterilization box and are used to adjust the horizontal position of the flushing and sterilizing component, so that the flushing and sterilizing component can sterilize the material more comprehensively;

[0011] The air drying component is arranged above the sterilization box and is used to air dry the sterilized materials.

[0012] As a further improvement of the present technical solution, the mounting assembly includes a clamping plate symmetrically arranged inside the sterilization box, the interiors of the two clamping plates are provided with clamping grooves for clamping T-shaped plates, the opposite sides of the two T-shaped plates are fixedly connected with mounting plates, the exteriors of the two mounting plates are respectively fixedly connected to the exteriors of the two placing tubes, the exteriors of the two clamping plates are fixedly connected with fixing plates, the interiors of the fixing plates are symmetrically provided with sliding rods, the interiors of the fixing plates are provided with movable plates, the interiors of the movable plates are provided with guide grooves for the movement of sliding rods, the exteriors of multiple sliding rods are sleeved with return springs, and the multiple return springs are in contact between the movable plate and the fixed plate, the front end surface of the movable plate is fixedly connected with a handle through a connecting plate, the rear end surface of the movable plate is symmetrically provided with insertion rods, the contact surfaces of the two fixing plates and the clamping plates are provided with guide grooves for the movement of the insertion rods, and the interiors of the two T-shaped plates are provided with guide grooves for the movement of the insertion rods.

[0013] As a further improvement of the present technical solution, the driving assembly includes a first motor fixedly connected to the outside of the sterilization box, and rotating rods are rotatably connected to both sides of the inner wall of the sterilization box. The other ends of the two rotating rods are respectively fixedly connected to the outside of two clamping plates, and the output shaft of the first motor is fixedly connected to one end of one of the rotating rods through a coupling.

[0014] As a further improvement of the present technical solution, the flushing and sterilization assembly includes a top plate located above the sterilization box, a flushing frame is fixedly connected to the bottom of the top plate, sterilization nozzles are evenly spaced inside the flushing frame, a rear plate is fixedly connected to the rear end surface of the sterilization box, a liquid storage tank and a water pump are respectively provided on the upper surface of the rear plate, the water inlet end of the water pump is connected to the interior of the liquid storage tank through a pipe, and the water outlet end of the water pump is connected to the interior of a plurality of sterilization nozzles through a branch pipe.

[0015] As a further improvement of the present technical solution, the adjustment assembly includes adjustment plates respectively arranged on the front end surface and the rear end surface of the sterilization box, the inner side walls of the two adjustment plates are rotatably connected with threaded rods, the other ends of the two threaded rods extend to the outside of the adjustment plates and are fixedly connected to the limiting disk, the outside of one of the adjustment plates is fixedly connected with a second motor, the output shaft of the second motor is fixedly connected to one end of one of the threaded rods through a coupling, the two threaded rods are connected through a synchronous belt and pulley transmission, the outsides of the two threaded rods are threadedly connected with threaded blocks, the upper surfaces of the two adjustment plates are provided with guide grooves for the movement of the threaded blocks, and the upper surfaces of the two threaded blocks are fixedly connected to the bottom of the top plate.

[0016] As a further improvement of the present technical solution, the air-drying component includes an air-drying device fixedly connected to the upper surface of the rear plate, the upper surface of the top plate is symmetrically provided with metal bellows, the other ends of the two metal bellows are fixedly connected to an air-drying hood, and the air outlet end of the air-drying device is connected to the interior of the air-drying hood through a pipe.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] In the pre-prepared food production sterilization equipment, by providing an installation component, a driving component, a flushing and sterilization component, an adjustment component and an air-drying component, when the raw materials need to be sterilized, it is only necessary to first place the raw materials inside the placing cylinder, and then fix the two placing cylinders by bolts. After the two placing cylinders are fixed, the placing cylinder and the sterilization box are fixedly installed by the installation component. After the placing cylinders are fixed and installed, the flushing and sterilization component starts to run. At this time, the raw materials inside the placing cylinder can be sterilized with saline by the flushing and sterilization component. When the flushing and sterilization component is running, the adjustment component will also start to run synchronously. At this time, the adjustment component will drive the flushing and sterilization component to run synchronously. The washing and sterilization effect and efficiency of the washing and sterilization component can be effectively improved by moving the washing and sterilization component. While the adjustment component is running, the driving component also starts to run synchronously. At this time, the driving component will drive the placement cylinder to rotate synchronously, and the placement cylinder will drive the raw materials to tumble synchronously. At this time, the washing and sterilization effect and efficiency of the raw materials can be further improved. After the washing of the raw materials is completed, the solenoid valve opens. At this time, the waste water in the sterilization box will be discharged through the drain pipe. When the waste water is completely discharged, the air-drying component starts to run. At this time, the air-drying component can effectively air-dry the raw materials inside the placement cylinder, thereby effectively improving the production efficiency of pre-prepared dishes, effectively improving the overall practicability of the sterilization equipment, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model after the placement tube is disassembled;

[0021] Figure 3 It is a schematic diagram of the cutaway three-dimensional structure of the adjustment plate in the utility model;

[0022] Figure 4 It is a schematic diagram of the cutaway three-dimensional structure of the top plate and the flushing frame in the utility model;

[0023] Figure 5 It is a rear-view stereoscopic structural schematic diagram of the utility model;

[0024] Figure 6 This is a bottom-up three-dimensional structural schematic diagram of the utility model;

[0025] Figure 7 for Figure 2 Schematic diagram of the enlarged structure of the A area in the middle;

[0026] Figure 8 for Figure 4 Schematic diagram of the enlarged structure of area B in the middle.

[0027] The meaning of each number in the figure is:

[0028] 1. Sterilization box; 2. Placement tube; 3. Adjustment plate; 4. First motor; 5. Second motor; 6. Limit plate; 7. Synchronous belt; 8. T-shaped plate; 9. Mounting plate; 10. Threaded rod; 11. Threaded block; 12. Top plate; 13. Air drying hood; 14. Back plate; 15. Liquid storage tank; 16. Water pump; 17. Branch pipe; 18. Air drying equipment; 19. Solenoid valve; 20. Drain pipe; 21. Rotating rod; 22. Snap-on plate; 23. Fixed plate; 24. Connecting plate; 25. Moving plate; 26. Sliding rod; 27. Reset spring; 28. Insert rod; 29. ​​Sterilization nozzle; 30. Flushing frame; 31. Metal bellows. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1 - Figure 8 As shown, this embodiment provides a pre-prepared food production sterilization device, including a sterilization box 1, and also includes:

[0031] Two placement cylinders 2 are both arranged inside the sterilization box 1. The two placement cylinders 2 are fixedly connected by bolts. The bottom of the sterilization box 1 is connected to a drain pipe 20 through a solenoid valve 19.

[0032] The mounting assembly is symmetrically arranged inside the sterilization box 1 and is used to fix the placement cylinder 2 and the sterilization box 1;

[0033] The driving assembly is arranged outside the sterilization box 1 and is used to drive the placement cylinder 2 to rotate, so that the material inside the placement cylinder 2 can be sterilized and rinsed more comprehensively;

[0034] The flushing and sterilizing component is arranged above the sterilizing box 1 and is used to flush and sterilize the materials placed inside the cylinder 2;

[0035] The adjusting components are respectively arranged on the front end surface and the rear end surface of the sterilization box 1, and are used to adjust the horizontal position of the flushing and sterilizing component, so that the flushing and sterilizing component can sterilize the material more comprehensively;

[0036] The air-drying component is arranged above the sterilization box 1 and is used to air-dry the sterilized materials.

[0037] The above working principle: when the raw materials need to be sterilized, just place the raw materials inside the placement cylinder 2 first, and then fix the two placement cylinders 2 by bolts. When the two placement cylinders 2 are fixed, the placement cylinder 2 and the sterilization box 1 are fixed and installed by the installation component. When the placement cylinder 2 is fixed and installed, the flushing and sterilization component starts to run. At this time, the raw materials inside the placement cylinder 2 can be sterilized with saline by the flushing and sterilization component. While the flushing and sterilization component is running, the adjustment component will also start to run synchronously. At this time, the adjustment component will drive the flushing and sterilization component to move synchronously, thereby effectively improving the flushing and sterilization component. In order to improve the flushing effect and efficiency, while the regulating component is running, the driving component also starts to run synchronously. At this time, the driving component will drive the placement cylinder 2 to rotate synchronously, and the placement cylinder 2 will drive the raw materials to tumble synchronously. At this time, the flushing and sterilization effect and efficiency of the raw materials can be further improved. After the flushing of the raw materials is completed, the solenoid valve 19 is opened. At this time, the waste water in the sterilization box 1 will be discharged through the drain pipe 20. When the waste water is completely discharged, the air-drying component starts to run. At this time, the air-drying component can effectively air-dry the raw materials inside the placement cylinder 2, thereby effectively improving the production efficiency of pre-prepared dishes, effectively improving the overall practicality of the sterilization equipment, and saving time and effort.

[0038] In order to effectively fix and install the placement tube 2 and the sterilization box 1, the installation component includes a clamping plate 22 symmetrically arranged inside the sterilization box 1, and the interior of the two clamping plates 22 is provided with a clamping groove for clamping the T-shaped plate 8, the opposite sides of the two T-shaped plates 8 are fixedly connected with a mounting plate 9, the exteriors of the two mounting plates 9 are respectively fixedly connected to the exteriors of the two placement tubes 2, and the exteriors of the two clamping plates 22 are fixedly connected with a fixing plate 23, and the interior of the fixing plate 23 is symmetrically provided with sliding rods 26, and the interior of the fixing plate 23 is provided with a moving plate 25, and the interior of the moving plate 25 is provided with a guide groove for the sliding rod 26 to move, and the exteriors of the multiple sliding rods 26 are all sleeved with reset springs 27, and the multiple reset springs 27 are all in contact between the moving plate 25 and the fixed plate 23, the front end surface of the moving plate 25 is fixedly connected with a handle through a connecting plate 24, and the rear end surface of the moving plate 25 is symmetrically provided with an insertion rod 28. The two fixing plates 23 and the clamping plate The contact surfaces of the connecting plates 22 are provided with guide grooves for the movement of the insertion rods 28, and the interiors of the two T-shaped plates 8 are provided with guide grooves for the movement of the insertion rods 28. When it is necessary to fix and install the placement tube 2 and the sterilization box 1, you only need to pull the handle first. At this time, the handle will drive the connecting plate 24 to move synchronously, and the connecting plate 24 will drive the movable plate 25 to move synchronously outside the sliding rod 26. During the movement of the movable plate 25, the reset spring 27 will be squeezed, and the movable plate 25 will also drive the insertion rod 28 to move synchronously. At this time, the T-shaped plate 8 is plugged into the inside of the clamping plate 22, and then the handle is released. At this time, the reset spring 27 is reset, driving the movable plate 25 to move synchronously, and the movable plate 25 drives the insertion rod 28 to move synchronously. When the insertion rod 28 is plugged into the guide groove inside the T-shaped plate 8, the T-shaped plate 8 and the clamping plate 22 can be fixed, and the placement tube 2 can be fixed and installed at this time.

[0039] Taking into account that when the raw materials are rinsed and sterilized, tumbling the raw materials can further improve the sterilization effect of the raw materials, the driving assembly includes a first motor 4 fixedly connected to the outside of the sterilization box 1, and rotating rods 21 are rotatably connected on both sides of the inner wall of the sterilization box 1. The other ends of the two rotating rods 21 are respectively fixedly connected to the outside of two clamping plates 22, and the output shaft of the first motor 4 is fixedly connected to one end of one of the rotating rods 21 through a coupling. When the flushing and sterilization assembly is running, the first motor 4 also starts to run synchronously. At this time, the first motor 4 will drive one of the rotating rods 21 to rotate synchronously, and the rotating rod 21 will drive the clamping plate 22 to rotate synchronously, and the clamping plate 22 will drive the placement tube 2 to rotate synchronously, and the placement tube 2 will drive the raw materials to tumble synchronously. At this time, the flushing and sterilization effect of the raw materials can be effectively improved.

[0040] In order to effectively rinse and sterilize the raw materials, the rinse and sterilize component includes a top plate 12 located above the sterilization box 1, a rinse frame 30 is fixedly connected to the bottom of the top plate 12, and sterilization nozzles 29 are evenly spaced inside the rinse frame 30. The rear end surface of the sterilization box 1 is fixedly connected to the back plate 14, and the upper surface of the back plate 14 is respectively provided with a liquid storage tank 15 and a water pump 16. The water inlet end of the water pump 16 is connected to the interior of the liquid storage tank 15 through a pipeline, and the water outlet end of the water pump 16 is connected to the interior of multiple sterilization nozzles 29 through a branch pipe 17. When the raw materials need to be rinsed and sterilized, the water pump 16 starts to run. At this time, the water pump 16 will transfer the saline inside the liquid storage tank 15 to the branch pipe 17 through the pipeline, and then transfer it to the interior of the sterilization nozzle 29 through the branch pipe 17, and then spray it out through the sterilization nozzle 29. At this time, the raw materials placed in the cylinder 2 can be rinsed and sterilized by saline.

[0041] In order to effectively move the horizontal position of the flushing and sterilization component so that the flushing and sterilization component can more comprehensively flush and sterilize the raw materials, the adjustment component includes adjustment plates 3 respectively arranged on the front end surface and the rear end surface of the sterilization box 1, and the inner side walls of the two adjustment plates 3 are rotatably connected with threaded rods 10, and the other ends of the two threaded rods 10 extend to the outside of the adjustment plates 3 and are fixedly connected to the limiting disk 6, and the outside of one of the adjustment plates 3 is fixedly connected with a second motor 5, and the output shaft of the second motor 5 is fixedly connected to one end of one of the threaded rods 10 through a coupling, and the two threaded rods 10 are connected through a synchronous belt 7 and a pulley transmission, and the outsides of the two threaded rods 10 are threadedly connected with threaded blocks 11, and the upper surfaces of the two adjustment plates 3 are provided with There is a guide groove for the threaded block 11 to move. The upper surfaces of the two threaded blocks 11 are fixedly connected to the bottom of the top plate 12. When the horizontal position of the flushing and sterilization component needs to be adjusted and moved, the second motor 5 starts to run. At this time, the second motor 5 will drive one of the threaded rods 10 to rotate synchronously. Since the two threaded rods 10 are connected by a synchronous belt 7 and a pulley for transmission, the two threaded rods 10 will rotate synchronously at this time, and the threaded block 11 will move synchronously on the outside of the threaded rod 10, driving the top plate 12 to move synchronously, and the top plate 12 will drive the flushing and sterilization component to move synchronously. At this time, the horizontal position of the flushing and sterilization component can be adjusted, so that the flushing and sterilization component can more comprehensively flush and sterilize the raw materials.

[0042] In addition, in order to effectively air-dry the raw materials after sterilization, the air-drying component includes an air-drying device 18 fixedly connected to the upper surface of the rear plate 14, and the upper surface of the top plate 12 is symmetrically provided with metal bellows 31. The other ends of the two metal bellows 31 are fixedly connected to the air-drying hood 13, and the air outlet end of the air-drying device 18 is connected to the interior of the air-drying hood 13 through a pipeline. When the sterilization of the raw materials is completed, the air-drying device 18 starts to operate. At this time, the air-drying device 18 will transmit the gas to the interior of the air-drying hood 13 through the pipeline, and then discharge it through the air-drying hood 13. At this time, the raw materials placed in the cylinder 2 can be effectively air-dried, thereby effectively improving the production efficiency of pre-prepared dishes. Through the arrangement of the metal bellows 31, it is convenient for the staff to adjust the angle position of the air-drying hood 13 according to actual needs.

[0043] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A pre-prepared food production sterilization device, comprising a sterilization box (1), characterized in that: Also includes: Two placement cylinders (2) are both arranged inside the sterilization box (1), the two placement cylinders (2) are fixedly connected by bolts, and the bottom of the sterilization box (1) is connected to a drainage pipe (20) via a solenoid valve (19); A mounting assembly, symmetrically arranged inside the sterilization box (1), and used to fix the placement cylinder (2) and the sterilization box (1); A driving assembly is arranged outside the sterilization box (1) and is used to drive the placement cylinder (2) to rotate, so that the material inside the placement cylinder (2) can be sterilized and rinsed more comprehensively; A flushing and sterilizing component is arranged above the sterilizing box (1) and is used to flush and sterilize the material placed inside the cylinder (2); Adjustment components are respectively arranged on the front end surface and the rear end surface of the sterilization box (1) and are used to adjust the horizontal position of the flushing and sterilization component, so that the flushing and sterilization component can sterilize the material more comprehensively; The air drying component is arranged above the sterilization box (1) and is used to air dry the sterilized material.

2. The pre-prepared food production sterilization equipment according to claim 1, characterized in that: The mounting assembly comprises a clamping plate (22) symmetrically arranged inside the sterilization box (1), the inside of the two clamping plates (22) are each provided with a clamping groove for clamping the T-shaped plate (8), the opposite side of the two T-shaped plates (8) are fixedly connected with a mounting plate (9), the outside of the two mounting plates (9) are respectively fixedly connected to the outside of the two placement cylinders (2), the outside of the two clamping plates (22) are each fixedly connected with a fixing plate (23), the inside of the fixing plate (23) is symmetrically provided with a sliding rod (26), the inside of the fixing plate (23) is provided with a movable plate (25), and the movable plate (25) is A guide groove for the movement of the slide rod (26) is provided inside, and a plurality of the slide rods (26) are sleeved with a return spring (27) outside, and the plurality of the return springs (27) are in contact between the movable plate (25) and the fixed plate (23). The front end surface of the movable plate (25) is fixedly connected with a handle through a connecting plate (24), and the rear end surface of the movable plate (25) is symmetrically provided with an insertion rod (28). The contact surfaces of the two fixed plates (23) and the clamping plate (22) are provided with a guide groove for the movement of the insertion rod (28), and the insides of the two T-shaped plates (8) are provided with a guide groove for the movement of the insertion rod (28).

3. The pre-prepared food production sterilization equipment according to claim 1, characterized in that: The driving assembly comprises a first motor (4) fixedly connected to the outside of the sterilization box (1); rotating rods (21) are rotatably connected to both sides of the inner wall of the sterilization box (1); the other ends of the two rotating rods (21) are respectively fixedly connected to the outside of two clamping plates (22); and the output shaft of the first motor (4) is fixedly connected to one end of one of the rotating rods (21) via a coupling.

4. The pre-prepared food production sterilization equipment according to claim 1, characterized in that: The flushing and sterilizing assembly comprises a top plate (12) located above the sterilization box (1), a flushing frame (30) is fixedly connected to the bottom of the top plate (12), sterilizing nozzles (29) are arranged at equal intervals inside the flushing frame (30), a rear plate (14) is fixedly connected to the rear end surface of the sterilization box (1), a liquid storage tank (15) and a water pump (16) are respectively arranged on the upper surface of the rear plate (14), a water inlet end of the water pump (16) is connected to the interior of the liquid storage tank (15) through a pipeline, and a water outlet end of the water pump (16) is connected to the interior of a plurality of sterilizing nozzles (29) through a branch pipe (17).

5. The pre-prepared food production sterilization equipment according to claim 4, characterized in that: The adjustment assembly comprises adjustment plates (3) respectively arranged on the front end surface and the rear end surface of the sterilization box (1); the inner side walls of the two adjustment plates (3) are rotatably connected with threaded rods (10); the other ends of the two threaded rods (10) extend to the outside of the adjustment plates (3) and are fixedly connected to the limiting disk (6); the outside of one of the adjustment plates (3) is fixedly connected with a second motor (5); the output shaft of the second motor (5) is fixedly connected to one end of one of the threaded rods (10) through a coupling; the two threaded rods (10) are connected through a synchronous belt (7) and a pulley for transmission; the outsides of the two threaded rods (10) are threadedly connected with threaded blocks (11); the upper surfaces of the two adjustment plates (3) are provided with guide grooves for the movement of the threaded blocks (11); the upper surfaces of the two threaded blocks (11) are fixedly connected to the bottom of the top plate (12).

6. The pre-prepared food production sterilization equipment according to claim 4, characterized in that: The air-drying assembly comprises an air-drying device (18) fixedly connected to the upper surface of the rear plate (14); the upper surface of the top plate (12) is symmetrically provided with metal bellows (31); the other ends of the two metal bellows (31) are fixedly connected to an air-drying hood (13); and the air outlet end of the air-drying device (18) is connected to the interior of the air-drying hood (13) through a pipeline.