Low-temperature sterilization and disinfection device for food logistics vehicle

Abstract

The utility model discloses a low temperature disinfecting device for food logistics vehicle, including the goods box and two parallel distribution's disinfecting and killing pipe, two disinfecting and killing pipes rotationally arranged in the goods box, and disinfecting and killing pipe one end all wear the goods box, two disinfecting and killing pipe bottom side all rotationally arranged have the bracket, and the goods box outside one side is provided with the reverse motor of supporting two disinfecting and killing pipe reverse reciprocating swing, and the goods box outside the other side is provided with the same direction motor of driving two groups of bracket support disinfecting and killing pipe same swing. Advantageous effect lies in: the utility model discloses through the synchronous disinfecting and killing of different directions in the goods box, can complete all -round low temperature disinfecting fast, especially suitable for the efficient processing of full load goods box.

Description

Technical Field

[0001] This utility model relates to the field of cold chain disinfection equipment, specifically to a low-temperature disinfection device for food logistics vehicles. Background Technology

[0002] In cold chain food logistics transportation, to ensure the hygiene and safety of food during transportation, low-temperature disinfection devices need to be installed in logistics vehicles to continuously disinfect goods. Existing technologies for low-temperature disinfection devices in logistics vehicles generally suffer from uneven disinfection coverage and poor adaptability: on the one hand, fixed disinfection structures can only provide unidirectional static spraying, making it difficult to quickly and effectively distribute disinfectant evenly within the cargo box, resulting in numerous disinfection dead zones within the cargo box; on the other hand, a single disinfection mode cannot flexibly adjust strategies according to the characteristics of the goods, especially lacking the ability to enhance the treatment of perishable and high-risk goods, and causing a waste of disinfection resources when the cargo box is not fully loaded.

[0003] To address the aforementioned issues, Chinese Patent Publication No. CN116370668A discloses a low-temperature sterilization device for cold chain food logistics vehicles. The device includes a food logistics vehicle and a transport box fixedly mounted on it. A plasma airflow generator is fixedly mounted on the transport box via a mounting bracket. An air supply assembly is located at the top inside the transport box, and an air vent assembly is located at the bottom of the air supply assembly. The air supply assembly discharges the low-temperature ion airflow generated by the plasma airflow generator through the air vent assembly. An annular conveyor assembly is located at the bottom inner side of the transport box. This annular conveyor assembly stores food and continuously moves the food in a circular motion below the air vent assembly. This invention allows the low-temperature plasma airflow to be periodically and sequentially blown onto the food in different areas of the transport box, ensuring uniform low-temperature sterilization and disinfection of the food in each area, thus guaranteeing the preservation effect of cold chain food during transportation. The solution improves the uniformity of disinfection by moving food, but it still has significant limitations: First, the vertical spray direction of the fixed air vent assembly cannot achieve multi-angle dynamic coverage. When the cargo box is full, the movement cycle of the food on the ring conveyor assembly is too long, which will reduce the disinfection effect. Vertical single-direction disinfection cannot quickly disinfect different areas inside the cargo box, resulting in low disinfection efficiency and even affecting the disinfection quality. Therefore, there is an urgent need to develop a new type of low-temperature disinfection device that can achieve multi-directional dynamic disinfection in order to solve the core problem of low disinfection efficiency in existing technologies. Utility Model Content

[0004] The purpose of this invention is to provide a low-temperature sterilization device for food logistics vehicles to solve the above problems. By simultaneously sterilizing different areas inside the cargo box, it can quickly complete all-round low-temperature sterilization, and is especially suitable for efficient handling of fully loaded cargo boxes, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The present invention provides a cargo box and two parallel disinfection pipes. The two disinfection pipes are rotatably disposed inside the cargo box, and one end of each disinfection pipe extends out of the cargo box. A bracket is rotatably disposed on the bottom side of each of the two disinfection pipes. A reverse motor is disposed on one side of the cargo box to support the two disinfection pipes to swing back and forth in opposite directions, and a co-directional motor is disposed on the other side of the cargo box to drive two sets of brackets to support the disinfection pipes to swing in the same direction. The reverse motor is externally provided with two meshing swing gears, and the output end of the reverse motor is connected to one of the swing gears. The disinfection tube is fixed with a transmission disk near the swing gear. The outer end faces of the two swing gears are fixed with pressure pads that support the transmission disk to drive the disinfection tube to rotate. The pressure pads and the transmission disk can be separated and pressed together.

[0006] Using the aforementioned low-temperature disinfection device for food logistics vehicles, the system can activate two working modes when disinfection is required. In the reverse swing mode, the reverse motor drives the swing gear connected to its output end to rotate. Because the two swing gears mesh with each other, they rotate synchronously in opposite directions. The pressure pad on the outer end face of the swing gear rotates accordingly, and the pressure pad drives the transmission disc and disinfection tube to rotate through friction. Since the two swing gears rotate in opposite directions, they drive the two disinfection tubes to swing back and forth in opposite directions, simultaneously disinfecting different areas inside the cargo box. When the unidirectional swing mode is activated, the unidirectional motor provides the drive source for unidirectional rotation, driving the two sets of brackets to swing in the same direction. The brackets support the bottom of the disinfection tubes, and the brackets drive the two disinfection tubes to swing in the same direction. The pressure pad and the transmission plate adopt a separable clamping design. When it is necessary to switch to unidirectional swing, the unidirectional motor can overcome the friction between the pressure pad and the transmission plate, so that the brackets can drive the disinfection tubes to swing in the same direction. When it is necessary to resume the reverse swing operation, the brackets are reset and do not drive the disinfection tubes. At this time, the disinfection tubes can be driven to rotate by the swing gear.

[0007] Preferably, a disc-shaped friction pad is provided on the outer side of the transmission disc, and the transmission disc and the friction pad are tapered arc surfaces with a smooth transition on the side near the disinfection tube.

[0008] Preferably, the pressure pad is a rubber ring structure adapted to cover the outer arc surface of the transmission disk, and the inner wall of the pressure pad abuts against the friction pad. The pressure pad, the friction pad, the transmission disk and the disinfection tube are coaxial.

[0009] Preferably, the output end of the co-directional motor is connected to a co-directional gear, and two transmission gears are symmetrically arranged on the outside of the co-directional gear, and the co-directional gear and the transmission gear are engaged, and the transmission gear is used to drive the bracket to rotate.

[0010] Preferably, the bracket extends out of the side wall of the cargo box near the same direction motor and is fixed with a rotating seat, and the transmission gear is fixed to the outside of the rotating seat.

[0011] Preferably, the bottom of the disinfection pipe is evenly connected with multiple downward-extending nozzles, and the bracket is an arc-shaped curved plate structure adapted to the disinfection pipe. The bottom side of the bracket is provided with multiple guide grooves to accommodate the nozzles as they swing with the disinfection pipe.

[0012] Preferably, pads are provided at both ends of the guide groove. When the two disinfection pipes need to rotate in the same direction, the motor supports the two sets of brackets to swing. The pads rotate to the position of pressing against the nozzle, so as to push the two disinfection pipes to rotate in the same direction through the brackets.

[0013] Preferably, a ceiling frame is provided at the top of the cargo box, and a pipe hole is provided in the middle of the ceiling frame to accommodate the rotation of the disinfection pipe. A constraint groove is provided below the pipe hole to guide the swing of the bracket. A plasma generator is provided at the top of the cargo box, and a T-connector is provided between the plasma generator and the two disinfection pipes. The T-connector and the disinfection pipes are connected through a rotating seat.

[0014] The beneficial effects are: 1. This utility model uses a reverse swing mode, in which two disinfection tubes swing back and forth in opposite directions under the drive of a reverse motor, to achieve synchronous disinfection in different directions inside the cargo box. It can quickly complete all-round low-temperature disinfection, and is especially suitable for efficient handling of fully loaded cargo boxes. 2. The unidirectional swing mode uses a unidirectional motor to drive the bracket to swing in the same direction, which in turn moves the nozzle and allows the two disinfection tubes to concentrate on a specific area, providing a larger unit amount of plasma disinfection material to quickly and efficiently kill pathogens. For perishable and high-risk goods or in situations where the load is not full, targeted and enhanced disinfection can be performed to improve disinfection efficiency and adaptability.

[0015] 3. The multiple nozzles at the bottom of the disinfection tube dynamically change the spray angle as the tube swings, allowing the plasma disinfectant to be sprayed into the gaps between stacked goods at an angle. Compared to spraying in a fixed direction, this significantly increases the penetration depth of the disinfectant in densely packed areas of goods, effectively killing pathogens hidden in the gaps between goods, and meeting the deep disinfection needs of specific goods.

[0016] 4. When the disinfection pipe deviates due to friction, the bracket is driven to rotate synchronously through the same-direction swing mode, which forces the nozzle rotation angle to be consistent with the bracket, automatically eliminating accumulated errors, reducing the need for manual intervention, and extending the service life of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a schematic diagram of the structure of the disinfection tube of this utility model; Figure 4 This is a structural schematic diagram of the ceiling frame of this utility model; Figure 5 This is a schematic diagram of the internal structure of the cargo box of this utility model from below; Figure 6 This is a schematic diagram of the structure of the bracket of this utility model; Figure 7 This is a schematic diagram of the structure of the friction pad of this utility model.

[0019] The annotations in the attached figures are explained as follows: 1. Cargo box; 101. Ceiling frame; 102. Pipe hole; 103. Constraint groove; 2. Plasma generator; 3. Disinfection pipe; 301. Nozzle; 302. Transmission plate; 303. Friction pad; 4. Bracket; 401. Guide groove; 402. Pad; 403. Rotating seat; 5. Reverse motor; 501. Swing gear; 502. Pressure pad; 6. Same-direction motor; 601. Same-direction gear; 602. Transmission gear; 7. T-pipe. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] See Figures 1-7As shown, this utility model provides a low-temperature sterilization device for food logistics vehicles, including a cargo box 1 and two parallel sterilization pipes 3. The two sterilization pipes 3 are rotatably disposed inside the cargo box 1, and one end of each sterilization pipe 3 extends out of the cargo box 1. A bracket 4 is rotatably disposed on the bottom side of each of the two sterilization pipes 3. A reverse motor 5 is disposed on one side of the cargo box 1 to support the two sterilization pipes 3 to swing back and forth in opposite directions, and a co-directional motor 6 is disposed on the other side of the cargo box 1 to drive the two sets of brackets 4 to support the sterilization pipes 3 to swing in the same direction. The reverse motor 5 is externally provided with two meshing swing gears 501, and the output end of the reverse motor 5 is connected to one of the swing gears 501. The disinfection tube 3 is fixed with a transmission disk 302 near the end of the swing gear 501. The outer end face of the two swing gears 501 is fixed with a pressure pad 502 that supports the transmission disk 302 to drive the disinfection tube 3 to rotate. The pressure pad 502 and the transmission disk 302 can be separated and pressed together.

[0022] When disinfection is required, the system can start two working modes. When the reverse swing mode is started, the reverse motor 5 drives the swing gear 501 connected to its output end to rotate. Since the two swing gears 501 mesh with each other, they rotate synchronously in opposite directions. The pressure pad 502 on the outer end face of the swing gear 501 rotates accordingly. The pressure pad 502 abuts against the transmission disc 302 at the end of the disinfection tube 3. The pressure pad 502 drives the transmission disc 302 and the disinfection tube 3 to rotate through friction. Since the two swing gears 501 rotate in opposite directions, they drive the two disinfection tubes 3 to swing back and forth in opposite directions. At the same time, different positions inside the cargo box 1 are disinfected synchronously. Disinfection can be carried out quickly to achieve all-round low-temperature disinfection of food inside the cargo box 1. When the unidirectional swing mode is activated, the unidirectional motor 6 provides the drive source for unidirectional rotation, driving the two sets of brackets 4 to swing in the same direction. The brackets 4 support the bottom of the disinfection tubes 3, driving the two disinfection tubes 3 to swing in the same direction. The pressure pad 502 and the transmission disk 302 adopt a separable and clamping design. When it is necessary to switch to unidirectional swing, the unidirectional motor 6 can overcome the friction between the pressure pad 502 and the transmission disk 302, allowing the brackets 4 to drive the disinfection tubes 3 to swing in the same direction. When it is necessary to resume the reverse swing operation, the brackets 4 reset and do not drive the disinfection tubes 3. At this time, the disinfection tubes 3 can be driven to rotate by the swing gear 501. For high-risk goods that are prone to spoilage, the unidirectional swing mode can be used to allow the two disinfection tubes 3 to concentrate and continuously perform unidirectional swing disinfection on the area, providing a larger unit amount of plasma disinfection material to the goods in the area, and quickly and efficiently killing any pathogens that may exist in the area. Even when the cargo box 1 is not fully loaded, the two disinfection tubes 3 can be oriented to disinfect the cargo area in a targeted manner by swinging in the same direction, which improves the disinfection efficiency and adaptability. As an optional implementation, since the two disinfection pipes 3 transmit rotational power through the friction between the transmission disc 302 and the pressure pad 502, deviations are likely to occur after long-term use. At this time, the deviation can be corrected by the same-direction swing mode. Specifically, when the disinfection pipe 3 deviates during rotation, the same-direction motor 6 is started to drive the bracket 4 to rotate synchronously, which drives the guide groove 401 to move synchronously. When the end of the guide groove 401 contacts the nozzle 301 of the first disinfection pipe 3, it pushes the nozzle 301 to move with the guide groove 401. As the bracket 4 continues to rotate, the guide groove 401 on the other side contacts the nozzle 301 of the other disinfection pipe 3. At this time, both nozzles 301 are in contact with the end of the guide groove 401, and their rotation angle is consistent with the rotation angle of the bracket 4. When the bracket 4 drives the two nozzles 301 back to the vertical downward position, the position correction of the nozzles 301 is completed. See Figures 2-3 As shown, as an optional implementation, a disc-shaped friction pad 303 is provided on the outer side of the transmission disc 302. The transmission disc 302 and the friction pad 303 have a smoothly transitioned conical arc surface on the side near the disinfection tube 3. The pressure pad 502 is a rubber ring structure that fits and covers the outer arc surface of the transmission disc 302, and the inner wall of the pressure pad 502 abuts against the friction pad 303. The pressure pad 502, the friction pad 303, the transmission disc 302 and the disinfection tube 3 are coaxial. With this arrangement, the friction pad 303 can effectively increase the friction between the transmission disc 302 and the pressure pad 502, effectively improving the stability when the swing gear 501 drives the transmission disc 302 to rotate. The conical arc surface can cooperate with the pressure pad 502. The side with the larger diameter is located inside the pressure pad 502 and can be installed in cooperation with the pressure pad 502 to prevent the pressure pad 502 from separating from the transmission disc 302 and the friction pad 303 due to the decrease in friction after long-term use. See Figures 1-2 As shown, the output end of the co-rotating motor 6 is connected to a co-rotating gear 601. Two transmission gears 602 are symmetrically arranged on the outside of the co-rotating gear 601, and the co-rotating gear 601 and the transmission gear 602 are meshed. The transmission gear 602 is used to drive the bracket 4 to rotate. With this arrangement, the two transmission gears 602 can be driven to rotate synchronously along the rotation direction of the co-rotating gear 601 through the co-rotating gear 601. See Figures 2-7As shown, the bracket 4 extends out of the side wall of the cargo box 1 near the same-direction motor 6 and is fixed with a rotating seat 403. The transmission gear 602 is fixed to the outside of the rotating seat 403. Multiple downward-extending nozzles 301 are evenly connected to the bottom of the disinfection pipe 3 along its length. The bracket 4 is an arc-shaped curved plate structure adapted to the disinfection pipe 3. The bottom side of the bracket 4 is provided with multiple guide grooves 401 to accommodate the nozzles 301 as they swing with the disinfection pipe 3. This arrangement facilitates the transmission gear 602 to drive the bracket 4 to rotate through the rotating seat 403. The rotation of 4 can rotate one end of the guide groove 401 to the position of the nozzle 301 and push the nozzle 301 to move. The bracket 4 is coaxial with the disinfection tube 3, so that the nozzle 301 drives the disinfection tube 3 to rotate. The two brackets 4 can rotate synchronously, so that the nozzle 301 and the disinfection tube 3 can rotate synchronously and in the same direction through the guide groove 401. When the disinfection tube 3 needs to swing in the opposite direction, the bracket 4 is reset and does not drive the disinfection tube 3, so that the disinfection tube 3 rotates in the opposite direction along the guide groove 401 under the drive of the swing gear 501. See Figure 7 As shown, pads 402 are provided at both ends of the guide groove 401. When the two disinfection pipes 3 need to rotate in the same direction, the motor 6 supports the two sets of brackets 4 to swing. The pads 402 rotate to the position of pressing against the nozzle 301, so as to push the two disinfection pipes 3 to rotate in the same direction through the brackets 4. When the end of the guide groove 401 drives the nozzle 301 to rotate and move, a large force is required to resist the friction between the transmission disc 302 and the pressure pad 502 at the end of the disinfection pipe 3. The pads 402 can provide a buffer between the two when the guide groove 401 applies pressure to the nozzle 301, significantly reducing the local impact force of the end of the guide groove 401 on the nozzle 301, and preventing the end of the guide groove 401 from causing deformation or damage to the nozzle 301. See Figures 2-7 As shown, a ceiling bracket 101 is installed at the top of the cargo box 1. A pipe hole 102, accommodating the rotation of the disinfection tube 3, passes through the center of the ceiling bracket 101. A constraint groove 103, guiding the swing of the support bracket 4, is installed below the pipe hole 102. A plasma generator 2 is installed at the top of the cargo box 1. A three-way pipe 7 connects the plasma generator 2 and the two disinfection tubes 3. The three-way pipe 7 is connected to the disinfection tubes 3 via a rotating seat 403. The ceiling bracket 101 supports the disinfection tubes 3 and the middle of the support bracket 4. When the disinfection tube 3 rotates, it can pass through the pipe hole 102... The middle part of the disinfection tube 3 is supported to prevent excessive vibration caused by the excessive length of the disinfection tube 3. The constraint groove 103 can guide the bracket 4 and guide the rotation of the bracket 4 to prevent the middle part of the bracket 4 from deviating due to vibration and causing the guide groove 401 to damage the nozzle 301. The three-way pipe 7 can disperse and conduct the plasma disinfection material generated by the plasma generator 2 to the two disinfection tubes 3. During this process, the two output ends of the three-way pipe 7 enter the cargo box 1 through the rotating seat 403 and are directly connected to the two disinfection tubes 3.

[0023] Using the above structure, firstly, the disinfection mode is selected according to the type of goods and loading status in the cargo box 1. When comprehensive and rapid disinfection is required, the reverse swing mode is activated. The operator turns on the reverse motor 5, whose output drives the swing gear 501 to rotate. Power is transmitted through gear meshing, causing the two swing gears 501 to rotate synchronously in opposite directions. As the swing gear 501 rotates, the pressure pad 502 on its outer end face rotates synchronously and presses against the friction pad 303 on the outer side of the transmission disc 302 at the end of the disinfection tube 3. Because the inner wall of the pressure pad 502 is in close contact with the conical arc surface of the friction pad 303, the friction force increases rapidly, causing the transmission disc 302 and the disinfection tube 3 to rotate synchronously in opposite directions. At this time, the pipe hole 102 of the ceiling frame 101 forms radial support for the middle of the disinfection tube 3, and the constraint groove 103 synchronously guides the swing trajectory of the bracket 4, ensuring that the disinfection tube 3 remains stable when rotating at high speed. Two disinfection pipes 3 spray plasma disinfection material into the cargo box 1 through the bottom nozzle 301. The two pipes swing back and forth to make the disinfection material evenly cover all areas of the cargo box 1, so as to achieve all-round low-temperature disinfection.

[0024] When targeted and intensified disinfection is required for perishable, high-risk goods or partially loaded containers 1, switch to the same-direction oscillation mode. The operator starts the same-direction motor 6, whose output drives the same-direction gear 601 to rotate. Through gear meshing, the two transmission gears 602 rotate synchronously in the same direction. The transmission gears 602 drive the bracket 4 to oscillate around the axis of the disinfection tube 3 via the rotating seat 403. The guide groove 401 at the bottom of the bracket 4 moves to the position of the nozzle 301 as it rotates. At this time, the pad 402 at the end of the guide groove 401 first contacts the nozzle 301, which disperses the impact force through flexible buffering. Then, the guide groove 401 continues to push the nozzle 301 to move. The torque output of the same-direction motor 6 overcomes the static friction between the transmission disc 302 and the pressure pad 502, causing the pressure pad 502 to temporarily separate from the friction pad 303. The bracket 4 drives the disinfection tube 3 to rotate in the same direction via the nozzle 301. The constraint groove 103 of the ceiling frame 101 continuously calibrates the swing angle of the bracket 4 to prevent misalignment between the guide groove 401 and the nozzle 301. When the two disinfection tubes 3 swing in the same direction, the disinfection material generated by the plasma generator 2 is diverted through the three-way pipe 7 and synchronously transported to the disinfection tube 3 through the rotating seat 403, concentrating on the target area to increase the density of disinfection material per unit area. Through the reverse swing mode, the two disinfection tubes 3 swing back and forth in opposite directions under the drive of the reverse motor 5, realizing synchronous disinfection in different directions inside the cargo box 1, which can quickly complete all-round low-temperature disinfection, and is especially suitable for efficient treatment of fully loaded cargo boxes 1.

[0025] The unidirectional swing mode drives the bracket 4 to swing in the same direction through the unidirectional motor 6, which in turn moves the nozzle 301, so that the two disinfection tubes 3 can concentrate on a specific area, providing a larger unit amount of plasma disinfection material to quickly and efficiently kill pathogens; for perishable and high-risk goods or in cases where the load is not full, targeted and enhanced disinfection can be carried out to improve disinfection efficiency and adaptability.

[0026] When the disinfection pipe 3 deviates due to friction, the bracket 4 is driven to rotate synchronously through the same-direction swing mode. The end of the guide groove 401 contacts the two nozzles 301 in sequence, forcing the nozzles 301 to rotate at the same angle as the bracket 4 until the nozzles 301 return to the vertical downward position, automatically eliminating the accumulated error, reducing the need for manual intervention, and extending the service life of the equipment.

[0027] The multiple nozzles 301 at the bottom of the disinfection tube 3 swing with the disinfection tube 3, and the spray angle changes dynamically, so that the plasma disinfection material is sprayed into the gap between the stacked goods in an inclined direction. Compared with spraying in a fixed direction, it can significantly improve the penetration depth of the disinfection material in the dense area of ​​goods, effectively kill pathogens hidden in the gaps between goods, and meet the deep disinfection needs of specific goods.

[0028] 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 variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A low-temperature sterilization device for food logistics vehicles, characterized in that: It includes a cargo box (1) and two parallel disinfection pipes (3). The two disinfection pipes (3) are rotatably installed inside the cargo box (1), and one end of each disinfection pipe (3) extends out of the cargo box (1). A bracket (4) is rotatably installed on the bottom side of each of the two disinfection pipes (3). A reverse motor (5) is installed on one side of the cargo box (1) to support the two disinfection pipes (3) to swing back and forth in opposite directions. A co-directional motor (6) is installed on the other side of the cargo box (1) to drive two sets of brackets (4) to support the disinfection pipes (3) to swing in the same direction. The reverse motor (5) is provided with two meshing swing gears (501) on its exterior, and the output end of the reverse motor (5) is connected to one of the swing gears (501) for transmission. The disinfection tube (3) is fixed with a transmission disk (302) near the swing gear (501). The outer end faces of the two swing gears (501) are fixed with pressure pads (502) that support the transmission disk (302) to drive the disinfection tube (3) to rotate. The pressure pads (502) and the transmission disk (302) can be separated and pressed together.

2. The low-temperature sterilization device for food logistics vehicles according to claim 1, characterized in that: The transmission disc (302) is provided with a disc-shaped friction pad (303) on the outside. The transmission disc (302) and the friction pad (303) are tapered arc surfaces with smooth transition on the side near the disinfection tube (3).

3. The low-temperature sterilization device for food logistics vehicles according to claim 2, characterized in that: The pressure pad (502) is a rubber ring structure adapted to cover the outer arc surface of the transmission disk (302), and the inner wall of the pressure pad (502) abuts against the friction pad (303). The pressure pad (502), the friction pad (303), the transmission disk (302) and the disinfection tube (3) are coaxial.

4. The low-temperature sterilization device for food logistics vehicles according to claim 3, characterized in that: The output end of the co-rotating motor (6) is connected to a co-rotating gear (601). Two transmission gears (602) are symmetrically arranged on the outside of the co-rotating gear (601), and the co-rotating gear (601) and the transmission gear (602) are engaged. The transmission gear (602) is used to drive the bracket (4) to rotate.

5. The low-temperature sterilization device for food logistics vehicles according to claim 4, characterized in that: The bracket (4) extends out of the side wall of the cargo box (1) near the same direction motor (6) and is fixed with a rotating seat (403). The transmission gear (602) is fixed to the outside of the rotating seat (403).

6. The low-temperature sterilization device for food logistics vehicles according to claim 5, characterized in that: The bottom of the disinfection pipe (3) is uniformly connected with multiple downward-extending nozzles (301) along its length direction. The bracket (4) is an arc-shaped curved plate structure adapted to the disinfection pipe (3). The bottom side of the bracket (4) is provided with multiple guide grooves (401) to accommodate the nozzles (301) as they swing with the disinfection pipe (3).

7. The low-temperature sterilization device for food logistics vehicles according to claim 6, characterized in that: Both ends of the guide groove (401) are provided with pads (402). When the two disinfection pipes (3) need to rotate in the same direction, the motor (6) supports the two sets of brackets (4) to swing. The pads (402) rotate to the position of pressing against the nozzle (301) so as to push the two disinfection pipes (3) to rotate in the same direction through the brackets (4).

8. The low-temperature sterilization device for food logistics vehicles according to claim 7, characterized in that: The cargo box (1) is equipped with a ceiling frame (101) at the top. The ceiling frame (101) has a pipe hole (102) in the middle to accommodate the rotation of the disinfection pipe (3). Below the pipe hole (102) is a constraint groove (103) for the swing of the guide bracket (4). The cargo box (1) is equipped with a plasma generator (2) at the top. A three-way pipe (7) is provided between the plasma generator (2) and the two disinfection pipes (3). The three-way pipe (7) is connected to the disinfection pipe (3) through a rotating seat (403).

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