Low-temperature plasma food preservation device

By designing a circular conveyor belt and a plasma generator in the low-temperature plasma food preservation device, the problem of incomplete plasma contact caused by food accumulation was solved, and the food was made into full contact with the plasma during the conveying and turning process, thus improving the preservation effect and the comprehensiveness of disinfection.

CN224320158UActive Publication Date: 2026-06-05JIANGSU UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU UNIV
Filing Date
2025-07-21
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

In existing low-temperature plasma food preservation devices, food piles up together, preventing the plasma from making full contact with the food and affecting the preservation effect.

Method used

A low-temperature plasma food preservation device with a ring conveyor belt was designed. The food is transported by the conveyor belt and disinfected and preserved by the low-temperature plasma generated by the plasma generator. At the same time, the food is turned over by the rotation of the pipe to ensure the thoroughness of disinfection.

Benefits of technology

This allows food to come into full contact with plasma during transport and turning, improving preservation and disinfection, and extending shelf life.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a low temperature plasma food fresh-keeping device, including pipeline, the inside of pipeline is annular structure distribution and has a plurality of conveyer belts, and the both ends of conveyer belt all extend to outside setting through the opening of pipeline, and all are equipped with the baffle between adjacent conveyer belts, and the one side of baffle all installs on the inner wall surface of pipeline, and the outside of pipeline is equipped with the bearing of bearing weight, and the bearing of bearing weight is installed between the base, and the drive mechanism of driving pipeline rotation is installed on the base, and the both ends of pipeline are installed and have a plurality of fixed tubes with the communication of pipeline inner chamber, and the opening of fixed tube outside all are installed with plasma generator. The utility model discloses through conveyer belt can to food conveying, after food enters into the pipeline, through the plasma of inside can to the food of conveying disinfects and preserves fresh operation, and the pipeline can rotate, makes food can carry out the operation of turning over, to ensure the overall nature and quality of disinfection.
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Description

Technical Field

[0001] This utility model relates to the field of food preservation technology, specifically to a low-temperature plasma food preservation device. Background Technology

[0002] Low-temperature plasma food preservation equipment is a new type of preservation device that uses low-temperature plasma technology (usually referring to plasma with a temperature close to room temperature) to extend the shelf life of food, sterilize and disinfect it, or maintain its quality. Its core principle is to use active particles (such as free radicals, ultraviolet rays, ozone, etc.) generated by ionized gas to act on the surface of food, destroying the structure of microorganisms or inhibiting their growth, while reducing thermal damage to the food itself.

[0003] However, in order to speed up the preservation process, current preservation devices generally pile food together directly, preventing the plasma from making contact with the food surfaces. This affects the overall preservation and thus the storage time of the food. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a low-temperature plasma food preservation device that can perform plasma sterilization operation while conveying food, so as to solve the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: a low-temperature plasma food preservation device, including a pipe, the inside of which is arranged in a ring structure with multiple conveyor belts, both ends of which extend through the openings of the pipe to the outside, and baffles are provided between adjacent conveyor belts, one side of which is installed on the inner wall of the pipe, load-bearing bearings are installed on the outside of the pipe, and bases are installed between the load-bearing bearings, with a drive mechanism for rotating the pipe installed on the bases, and multiple fixed pipes communicating with the inner cavity of the pipe are installed at both ends of the pipe, with plasma generators installed in the openings on the outer sides of the fixed pipes.

[0006] As a preferred technical solution, the two ends of the conveyor belt are respectively provided with a driving roller and a driven roller that mesh with the conveyor belt. Both ends of the driving roller and the driven roller are provided with a fixed frame. One end of the fixed frame is installed on the inner wall of the pipe, and the other end of the fixed frame is embedded with a first bearing. The roller shafts at both ends of the driving roller and the driven roller are installed in the inner ring of the first bearing. A first motor is installed on the fixed frame on one side of the driving roller, and the rotating shaft of the first motor is fixedly connected to the roller shaft at one end of the driving roller.

[0007] As a preferred technical solution, the drive mechanism includes a drive cylinder and a second motor. The middle recess of the base forms a mounting groove. The outer ring surface of the drive cylinder is in frictional contact with the outer wall surface of the pipe. A second bearing is embedded in one end of the mounting groove, and a shaft hole communicating with the outside is provided at the other end. The cylinder shaft at one end of the drive cylinder is installed in the inner ring of the second bearing. The second motor is installed at one end of the base. The rotating shaft of the second motor extends through the shaft hole into the interior of the mounting groove and is fixedly connected to the cylinder shaft at the other end of the drive cylinder through a coupling.

[0008] As a preferred technical solution, the conveyor belts are all in a taut state, and multiple air vents are distributed in a ring structure on the conveyor belts.

[0009] As a preferred technical solution, the conveyor belts are all made of rubber materials.

[0010] As a preferred technical solution, a rubber layer is installed on the drive cylinder.

[0011] The beneficial effects of this utility model are: This utility model can transport food through a conveyor belt. After the food enters the pipe, the internal plasma can disinfect and preserve the transported food. In addition, the pipe can rotate, so that the food can be turned over to ensure the comprehensiveness and quality of disinfection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a side view of the present invention;

[0014] Figure 3 This is a schematic diagram of the structure of this utility model after the pipe is removed;

[0015] Figure 4 This is a bottom view of the present invention.

[0016] In the diagram, 1 is the pipe; 2 is the conveyor belt; 3 is the baffle; 4 is the load-bearing bearing; 5 is the base; 6 is the drive cylinder; 7 is the second motor; 8 is the fixed pipe; 9 is the plasma generator; 10 is the fixed frame; 11 is the first motor; 12 is the first bearing; 13 is the mounting groove; and 14 is the vent. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model discloses a low-temperature plasma food preservation device, comprising a pipe 1. Multiple conveyor belts 2 are arranged in a ring structure inside the pipe 1. Both ends of the conveyor belts 2 extend through openings in the pipe 1 to the outside. Baffles 3 are provided between adjacent conveyor belts 2, with one side of each baffle 3 mounted on the inner wall of the pipe 1. Load-bearing bearings 4 are installed outside the pipe 1, and bases 5 are installed between the load-bearing bearings 4. A drive mechanism for rotating the pipe 1 is installed on the bases 5. Multiple fixed pipes 8 communicating with the inner cavity of the pipe 1 are installed at both ends of the pipe 1. Plasma generators 9 are installed in the openings on the outer sides of the fixed pipes 8. This device is not suitable for fragile foods, but is suitable for meat, nuts, and other non-fragile foods.

[0019] In this embodiment, the two ends of the conveyor belt 2 are respectively provided with a driving roller and a driven roller that mesh with the conveyor belt 2. Both ends of the driving roller and the driven roller are provided with a fixing frame 10. One end of the fixing frame 10 is installed on the inner wall of the pipe 1, and the other end of the fixing frame 10 is embedded with a first bearing 12. The roller shafts at both ends of the driving roller and the driven roller are installed in the inner ring of the first bearing 12. A first motor 11 is installed on the fixing frame 10 on one side of the driving roller. The rotating shaft of the first motor 11 is fixedly connected to the roller shaft at one end of the driving roller. The outer ring surface of the driven roller and the driving roller is provided with convex teeth, and the inner ring surface of the conveyor belt is provided with matching tooth grooves, so that the driving roller, the driven roller and the conveyor belt mesh with each other and avoid slippage.

[0020] In this embodiment, the driving mechanism includes a driving cylinder 6 and a second motor 7. The middle recess of the base 5 forms a mounting groove 13. The outer ring surface of the driving cylinder 6 is in frictional contact with the outer wall surface of the pipe 1. A second bearing is embedded in one end of the mounting groove 13, and a shaft hole communicating with the outside is provided at the other end. The cylinder shaft at one end of the driving cylinder 6 is installed in the inner ring of the second bearing. The second motor 7 is installed at one end of the base 5. The rotating shaft of the second motor 7 extends through the shaft hole into the interior of the mounting groove 13 and is fixedly connected to the cylinder shaft at the other end of the driving cylinder 6 through a coupling.

[0021] In this embodiment, all conveyor belts 2 are in a taut state, and multiple air vents 14 are distributed in a ring structure on each conveyor belt 2. Through the air vents, plasma can enter the interior of multiple conveyor belts and come into full contact with the food.

[0022] In this embodiment, the conveyor belts 2 are all made of rubber material, which increases flexibility and reduces the probability of food damage when the food is flipped and dropped.

[0023] In this embodiment, a rubber layer is installed on each of the drive cylinders 6. The rubber layer can increase the friction between the cylinder and the pipe, thereby driving the pipe to rotate more smoothly. The second motor is a simple deceleration motor to reduce the rotation speed.

[0024] In use, the first motor and the second motor are started. The start of the first motor drives the drive roller, and the rotation of the drive roller drives the conveyor belt. The start of the second motor drives the drive cylinder, and the rotation of the drive cylinder through friction drives the rotation of the pipe, which in turn drives the conveyor belt.

[0025] Food can be placed on the bottom conveyor belt, and the rotating conveyor belt can drive the food conveyor belt. The rotating pipe can drive the conveyor belt to rotate circumferentially, which can rotate the bottom conveyor belt to both sides. The food can fall from the side conveyor belts back to the bottom conveyor belt, so that the food can be flipped while being transported.

[0026] During the conveying and turning process, the low-temperature plasma generated by the plasma generator can diffuse into the inside of the pipeline through the fixed tube and the vent, so that the food can be disinfected and preserved during the process, and the turning operation can ensure the thoroughness of disinfection.

[0027] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A low-temperature plasma food preservation device, characterized in that: The system includes a pipe (1), which has multiple conveyor belts (2) arranged in a ring structure inside. Both ends of the conveyor belts (2) extend through the openings of the pipe (1) to the outside. There are baffles (3) between adjacent conveyor belts (2). One side of each baffle (3) is installed on the inner wall of the pipe (1). There are load-bearing bearings (4) installed on the outside of the pipe (1). There are bases (5) installed between the load-bearing bearings (4). There is a drive mechanism on the base (5) that drives the pipe (1) to rotate. There are multiple fixed pipes (8) connected to the inner cavity of the pipe (1) installed at both ends of the pipe (1). There are plasma generators (9) installed in the openings on the outside of the fixed pipes (8).

2. The low-temperature plasma food preservation device according to claim 1, characterized in that: The two ends of the conveyor belt (2) are respectively provided with a drive roller and a driven roller that mesh with the conveyor belt (2). Both ends of the drive roller and the driven roller are provided with a fixed frame (10). One end of the fixed frame (10) is installed on the inner wall of the pipe (1). The other end of the fixed frame (10) is embedded with a first bearing (12). The roller shafts at both ends of the drive roller and the driven roller are installed in the inner ring of the first bearing (12). A first motor (11) is installed on the fixed frame (10) on one side of the drive roller. The rotating shaft of the first motor (11) is fixedly connected to the roller shaft at one end of the drive roller.

3. The low-temperature plasma food preservation device according to claim 1, characterized in that: The drive mechanism includes a drive cylinder (6) and a second motor (7). The middle recess of the base (5) forms a mounting groove (13). The outer ring surface of the drive cylinder (6) is in frictional contact with the outer wall surface of the pipe (1). A second bearing is embedded in one end of the mounting groove (13), and a shaft hole communicating with the outside is provided at the other end. The cylinder shaft at one end of the drive cylinder (6) is installed in the inner ring of the second bearing. The second motor (7) is installed at one end of the base (5). The rotating shaft of the second motor (7) extends through the shaft hole into the interior of the mounting groove (13) and is fixedly connected to the cylinder shaft at the other end of the drive cylinder (6) through a coupling.

4. The low-temperature plasma food preservation device according to claim 1, characterized in that: The conveyor belts (2) are all in a taut state, and multiple air vents (14) are distributed in a ring structure on the conveyor belts (2).

5. The low-temperature plasma food preservation device according to claim 1, characterized in that: The conveyor belts (2) are all made of rubber.

6. The low-temperature plasma food preservation device according to claim 3, characterized in that: A rubber layer is installed on each of the drive cylinders (6).