Electrostatic field fresh-keeping device for cold chain transportation

Abstract

The invention discloses an electrostatic field fresh-keeping device for cold chain transportation, which is characterized in that the left side of a transportation compartment is provided with refrigeration equipment and an electrostatic generator, the inner walls of the front and rear sides of the transportation compartment are respectively provided with a plurality of fresh-keeping electrode plates which are distributed at equal intervals, and the top end of the interior of the transportation compartment is provided with a gas circulation assembly; according to the fruit and vegetable fresh-keeping device, the fresh-keeping electrode plate is arranged in the transportation compartment, and the electrostatic generator is arranged in a matched mode, so that ozone and negative ions are contained in the transportation compartment, and therefore the fresh-keeping period of fruits and vegetables is effectively prolonged, and maturity and aging of the fruits and vegetables are restrained; the ozone in the lower portion of the transport carriage is continuously absorbed to the upper portion and then sinks again, so that a cycle is formed, the fruits and vegetables on the upper portion and the lower portion can make contact with the ozone, it is guaranteed that the fruits and the vegetables can make contact with the ozone, and the fresh-keeping effect is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of cold chain transportation, and in particular to an electrostatic field fresh-keeping device for cold chain transportation. Background Art

[0002] In cold chain transportation, many transported items need to be kept fresh, such as vegetables and fruits. At present, in order to ensure the freshness of such items, electrostatic preservation equipment is used. The gases generated during the electrostatic preservation process mainly include ozone and negative ions. Ozone has strong oxidizing properties and can kill microorganisms and bacteria and control the reproduction of microorganisms in the environment. Negative ions can change the membrane potential of fruit and vegetable cells and affect the electron transfer process of their respiratory system, thereby reducing the respiratory intensity of fruits and vegetables and delaying the aging process.

[0003] Since ozone is continuously generated during electrostatic preservation, the ozone concentration in the car is relatively high. Excessive ozone concentration can have a variety of negative effects on human health. High concentrations of ozone can strongly irritate the respiratory tract, causing symptoms such as sore throat, chest tightness, and coughing. In severe cases, it may lead to bronchitis and emphysema. In addition, ozone can also have adverse effects on the cardiovascular system. Long-term exposure to high concentrations of ozone will reduce the function of the human immune system and increase the risk of infection. To this end, we designed an electrostatic field preservation device for cold chain transportation. Summary of the invention

[0004] The present invention provides an electrostatic field fresh-keeping device for cold chain transportation, which solves the above-mentioned problem.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An electrostatic field preservation device for cold chain transportation, comprising a transport carriage, a refrigeration device and an electrostatic generator are installed on the left side of the transport carriage, two door panels are installed on the right side of the transport carriage through hinges, and a limiting mechanism is respectively provided at the upper end of the inner side of the two door panels, two sets of electric skylights are installed on the roof of the transport carriage, and an air guide cover is installed above the top of the transport carriage, and a plurality of equally spaced preservation electrode plates are respectively installed on the inner walls of the front and rear sides of the transport carriage, and the preservation electrode plates are electrically connected to the electrostatic generator; A gas circulation component is installed at the top of the interior of the transport compartment, and the gas circulation component includes an upper frame fixed at the top of the interior of the transport compartment, and the two electric skylights are located directly above the upper frame. A plurality of evenly distributed axial flow fans are installed at the bottom of the upper frame, and a plurality of evenly distributed air outlets are provided on the outer surface of the upper frame. A sealing mechanism for sealing the air outlets is installed inside the upper frame, and a lower frame is screwed to the bottom of the upper frame, and an opening is formed through the bottom of the lower frame, and a wind shield mechanism for adjusting the air volume is installed in the opening, and the wind shield mechanism and the limiting mechanism are both connected to the sealing mechanism.

[0006] Preferably, an absorption tube is installed between every two adjacent fresh-keeping electrode plates, a gas collecting tube is installed between the top ends of the multiple absorption tubes on the same side, and multiple evenly distributed connecting tubes are installed on the top end of the gas collecting tube, the other end of the connecting tube is connected to the outer wall of the lower frame, and the inner cavity of the connecting tube is connected to the interior of the lower frame; The absorption tube is hollow inside to form an absorption cavity, the inside of the gas collecting pipe is connected to the absorption cavity, and the outer surface of the absorption tube is provided with a plurality of evenly distributed absorption ports from bottom to top, and the absorption ports are connected to the absorption cavity; When the axial flow fan above is running and draws the gas below upward, the ozone gas at the bottom of the car can enter the absorption chamber through the absorption port, and enter the inner cavity of the lower frame through the gas collecting pipe and the connecting pipe, and then enter the upper frame through the axial flow fan. The ozone at the bottom is continuously absorbed upward and then sinks again, thus forming a cycle, so that the fruits and vegetables above and below can all come into contact with the ozone.

[0007] Preferably, a docking port is provided on the upper frame, and two groups of exhaust pipes are respectively installed at the front and rear ends of the upper frame, the inward end of the exhaust pipe coincides with the docking port of the upper frame, the other end of the exhaust pipe is fixed to the side wall of the transport compartment, and the exhaust pipe passes through the transport compartment and is placed outside thereof, the end of the exhaust pipe away from the upper frame is flush with the outer wall surface of the transport compartment, and a shutter is also provided on the outermost side of the exhaust pipe.

[0008] Preferably, the blocking mechanism comprises four mounting columns respectively fixed at the inner corners of the upper frame, the upper end and the lower end of the mounting column are respectively rotatably mounted with a guide pulley, a belt is respectively tensioned between the upper and lower four guide pulleys, a plurality of evenly distributed shielding plates are installed between the upper and lower belts, and the shielding plates are slidably connected to the inner wall of the upper frame; A rectangular abutment frame is fixed between the four mounting columns, and the outer surface of the abutment frame is in sliding contact with the inner surfaces of multiple shielding plates. An electric push rod is respectively installed on the front and rear sides above the abutment frame, and the push rods of the electric push rods are connected to the shielding plates. The two electric push rods are installed in opposite directions and are controlled by the same external power supply. The two electric push rods can be extended and retracted at the same time.

[0009] Preferably, the number of the shielding plates is the same as the number of the air outlets, and the length and width of the shielding plates are greater than the length and width of the air outlets, and the shielding plates are staggered with the air outlets; Four closing plates are symmetrically arranged between the upper and lower belts. The size of the closing plates is larger than the size of the docking port. When the shielding plate is in the open state, the closing plate is located in front of the docking port, and the closing plate will shield and close the docking port.

[0010] Preferably, the wind shielding mechanism comprises a plurality of louvers arranged in parallel in the opening of the lower frame, a mounting shaft frame is fixed at the middle of the upper part of each louver, the mounting shaft frame is rotatably connected to the inner wall of the lower frame through a shaft pin, a linkage rod is rotatably mounted on the upper rear side of the louver through the shaft frame and the shaft pin, a plurality of notches distributed at equal intervals are opened at the bottom end of the upper frame, and the upper end of the linkage rod passes through the notch and is placed above the interior of the upper frame; A fixed shaft rod is rotatably mounted on the upper end of the linkage rod, and the rear end of the fixed shaft rod is fixed to a shielding plate; Linkage rods are provided at both the front and rear ends of the leftmost shutter, and the two linkage rods at the front and rear ends are in opposite directions. The top of the rear linkage rod is tilted to the right, and the top of the front linkage rod is tilted to the front left. When the shielding plate moves counterclockwise, that is, the rear shielding plate moves to the left and the front shielding plate moves to the right, the two moving shielding plates will respectively push the two linkage rods to deflect, thereby causing the lower shutter to deflect downward with its axle pin as the axis.

[0011] Preferably, a connecting hole is provided on the right side surface of the upper frame body, and the connecting hole is connected with the interior of the upper frame body, and the limiting mechanism comprises two guide plates symmetrically arranged above the right end of the inner wall of the transport compartment, and the guide plates are slidably sleeved with guide rods, and a limiting block is fixed at the bottom end of the guide rods, and a downward compression spring is sleeved on the guide rods, and the upper and lower ends of the downward compression spring are respectively abutted against the lower surface of the guide plate and the upper surface of the limiting block, and the top end of the guide rod is connected with a pulling rope, and the other end of the pulling rope passes through the connecting hole and is connected with the shielding plate; A clamping seat is fixed on the inward side of the two door panels, and a limiting notch is provided on the clamping seat. The limiting block slides up and down and is placed in the limiting notch. When the blocking mechanism is in the open state, that is, the baffle plate is misaligned with the air outlet, and the baffle plate does not block the air outlet, the limiting block is in the limiting notch of the clamping seat at this time, thereby limiting the door panel and preventing it from opening.

[0012] Preferably, a wire wheel 1 is rotatably installed on the right side of the outer wall of the upper frame through a bracket, and a wire wheel 2 is rotatably installed on the top of the transport carriage through a bracket. The pulling rope passes through the wire wheel 2 and the wire wheel 1 in sequence and is connected to the baffle plate. The wire wheel 2 makes the part of the pulling rope above the guide rod face vertically downward, thereby facilitating the pulling rope to move the guide rod vertically up and down, thereby minimizing the force required for the guide rod to move up and down.

[0013] Preferably, the inclined surface of the side of the card seat away from the door panel is designed to form a sliding inclined surface, and the inclined surface of the side of the limit block close to the door panel is designed to form a contact sliding surface. The limit notch and the other side of the limit block are designed vertically. When the door panel is rotated inward and closed, the sliding inclined surface of the card seat abuts against the contact sliding surface of the limit block, and the limit block can move upward along the sliding inclined surface. When the door panel is completely closed, the limit block can be stuck in the limit notch, thereby limiting the door panel.

[0014] Beneficial effects of the present invention: 1. By installing a fresh-keeping electrode plate in the transport compartment and cooperating with an electrostatic generator, ozone and negative ions are contained in the transport compartment, thereby effectively extending the shelf life of fruits and vegetables and inhibiting the maturation and aging of fruits and vegetables. With the gas circulation components and wind shielding mechanism, the ozone at the bottom of the transport compartment is continuously absorbed to the top and then sinks again, thus forming a cycle, so that the fruits and vegetables above and below can all come into contact with ozone, ensuring that the fruits and vegetables can all come into contact with ozone and the fresh-keeping effect is guaranteed; 2. By setting up a blocking mechanism and a wind shielding mechanism inside the gas circulation component, and cooperating with the exhaust pipe, the ozone in the transport compartment can be discharged in any weather, so that the concentration is below the standard value, ensuring the health of the workers during unloading; 3. By setting a limit mechanism on the door panel and connecting the limit mechanism with the blocking mechanism, when the wind shield mechanism and the blocking mechanism are not opened for exhaust, the door cannot be opened at this time, which can remind people that the internal ozone concentration is high and needs to be exhausted before opening again, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic cross-sectional view of a front view of an electrostatic field fresh-keeping device for cold chain transportation proposed by the present invention; Figure 2 for Figure 1 A schematic diagram of a structure in which a guide cover is not provided; Figure 3 for Figure 1 A cross-sectional view of Figure 4 for Figure 2 Schematic diagram of the structure without the top of the middle carriage; Figure 5 for Figure 4 Structural schematic diagram of the gas circulation component, the limiting mechanism and the blocking mechanism; Figure 6 for Figure 5 Exploded diagram of the gas circulation assembly, wind shielding mechanism and sealing mechanism; Figure 7 for Figure 6 The enlarged schematic diagram at A in the middle; Figure 8 A top view of the gas circulation assembly and the sealing mechanism; Fig. 9 for Figure 5 A partial enlarged schematic diagram; Fig.10 for Fig. 9 Schematic diagram of the structure of the middle limit mechanism.

[0016] Numbers in the figure: 1, transport compartment; 11, refrigeration equipment; 12, door panel; 13, electric sunroof; 2, electrostatic generator; 3, air guide hood; 4, exhaust pipe; 5, fresh-keeping electrode plate; 6, gas circulation component; 61, upper frame; 611, air outlet; 612, connecting hole; 613, docking port; 62, lower frame; 63, axial flow fan; 64, connecting pipe; 65, gas collecting pipe; 66, absorption pipe; 661, absorption port; 7, blocking mechanism; 71, belt; 72, shielding plate ; 73. Mounting column; 731. Guide pulley; 74. Abutment frame; 75. Electric push rod; 76. Sealing plate; 8. Wind shield mechanism; 81. Shutters; 82. Linkage rod; 83. Mounting shaft frame; 84. Fixed shaft rod; 9. Limiting mechanism; 91. Cardan seat; 911. Sliding slope; 912. Limiting notch; 92. Limiting block; 921. Contact sliding surface; 93. Pull rope; 94. Reel one; 95. Guide plate; 96. Reel two; 97. Compression spring; 98. Guide rod. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Reference Figure 1-Figure 10, an electrostatic field preservation device for cold chain transportation, comprising a transport carriage 1, a refrigeration device 11 and an electrostatic generator 2 are installed on the left side of the transport carriage 1, two door panels 12 are installed on the right side of the transport carriage 1 through hinges, and a limit mechanism 9 is respectively arranged at the upper end of the inner side of the two door panels 12, and two sets of electric skylights 13 are installed on the roof of the transport carriage 1, and an air guide hood 3 is installed above the top of the transport carriage 1, and the air guide hood 3 allows the airflow to be concentrated through the inner wall of the air guide hood 3, thereby increasing the wind speed. In this way, after the electric skylight 13 is opened, the air pressure above is less than the air pressure inside the transport carriage 1, forming a pressure difference, so that the airflow inside the transport carriage 1 can be quickly discharged outward, and a plurality of equally spaced preservation electrode plates 5 are respectively installed on the inner walls of the front and rear sides of the transport carriage 1, and the preservation electrode plates 5 are electrically connected to the electrostatic generator 2; A gas circulation component 6 is installed at the top of the transport compartment 1, and the gas circulation component 6 includes an upper frame 61 fixed at the top of the transport compartment 1. Two electric sunroofs 13 are located directly above the upper frame 61. A plurality of evenly distributed axial flow fans 63 are installed at the bottom of the upper frame 61. A plurality of evenly distributed air outlets 611 are provided on the outer surface of the upper frame 61. A blocking mechanism 7 for blocking the air outlets 611 is installed inside the upper frame 61. A lower frame 62 is screwed to the bottom of the upper frame 61. An opening is formed through the bottom of the lower frame 62. A wind shielding mechanism 8 for adjusting the air volume is installed in the opening. The wind shielding mechanism 8 and the limiting mechanism 9 are both connected to the blocking mechanism 7.

[0019] An absorption tube 66 is installed between every two adjacent fresh-keeping electrode plates 5, and a gas collecting tube 65 is installed between the tops of multiple absorption tubes 66 on the same side. Multiple evenly distributed connecting tubes 64 are installed on the top of the gas collecting tube 65. The other end of the connecting tube 64 is connected to the outer wall of the lower frame 62, and the inner cavity of the connecting tube 64 is connected to the inside of the lower frame 62; The absorption tube 66 is hollow inside to form an absorption cavity, the inside of the gas collecting pipe 65 is connected to the absorption cavity, and the outer surface of the absorption tube 66 is provided with a plurality of evenly distributed absorption ports 661 from bottom to top, and the absorption ports 661 are connected to the absorption cavity; The molecular weight of ozone is greater than that of air, and it will be concentrated at the bottom of the transport carriage 1. When the upper axial flow fan 63 runs and causes the gas at the bottom to be drawn upward, the ozone gas at the bottom of the carriage can enter the absorption chamber through the absorption port 661, and enter the inner cavity of the lower frame 62 through the air collecting pipe 65 and the connecting pipe 64, and then enter the upper frame 61 through the axial flow fan 63. At this time, the electric sunroof 13 is in a closed state, and the ozone gas inside the upper frame 61 will diffuse to the outside through the air outlet 611 and sink again, so that the ozone at the bottom is continuously absorbed to the top, and then sinks again, thus forming a cycle, so that the fruits and vegetables above and below can come into contact with the ozone.

[0020] The upper frame 61 is provided with a docking port 613, and two sets of exhaust pipes 4 are respectively installed at the front and rear ends of the upper frame 61, and the inward end of the exhaust pipe 4 coincides with the docking port 613 of the upper frame 61, and the other end of the exhaust pipe 4 is fixed to the side wall of the transport carriage 1, and the exhaust pipe 4 passes through the transport carriage 1 and is placed outside the transport carriage 1, and the end of the exhaust pipe 4 away from the upper frame 61 is flush with the outer wall surface of the transport carriage 1, and a shutter is also arranged on the outermost side of the exhaust pipe 4; During the movement of the transport carriage 1, the docking port 613 can be opened or not as needed. When the docking port 613 is opened, the airflow will flow along the front and rear outer walls of the transport carriage 1. Since the airflow flows at a fast speed, the air pressure outside the transport carriage 1 is lower than the pressure inside the exhaust pipe 4, forming a pressure difference. The gas in the exhaust pipe 4 will be sucked outward. When the electric sunroof 13 is not opened on rainy days, the gas inside the upper frame 61 can be discharged directly to the outside through the exhaust pipe 4.

[0021] The blocking mechanism 7 includes four mounting columns 73 respectively fixed at the inner corners of the upper frame 61, and a guide pulley 731 is rotatably mounted on the upper and lower ends of the mounting columns 73, and a belt 71 is tensioned between the upper and lower four guide pulleys 731, and a plurality of evenly distributed shielding plates 72 are installed between the upper and lower belts 71, and the shielding plates 72 are slidably connected to the inner wall of the upper frame 61; A rectangular abutment frame 74 is fixed between the four mounting posts 73, the outer surface of the abutment frame 74 is in sliding contact with the inner surfaces of the plurality of shielding plates 72, and an electric push rod 75 is respectively installed on the front and rear sides above the abutment frame 74, and the push rod of the electric push rod 75 is connected to the shielding plate 72; The installation directions of the two electric push rods 75 are opposite, and the two are controlled by the same external power supply. The two electric push rods 75 can extend and retract at the same time, and when they are extended, the baffle plate 72 connected to the electric push rod 75 will rotate counterclockwise, so that the upper and lower belts 71 move along the guide pulley 731, so that the multiple baffle plates 72 can move synchronously by a distance of one or more units. At this time, the baffle plate 72 can block the air outlet 611.

[0022] The number of shielding plates 72 is the same as the number of air outlets 611, and the length and width of the shielding plates 72 are greater than the length and width of the air outlets 611. The shielding plates 72 and the air outlets 611 are staggered. When the push rod of the electric push rod 75 is extended, the shielding plates 72 move counterclockwise by one or more unit distances. One unit distance is the distance between the shielding plates 72 and the adjacent air outlets 611. The specific moving distance is adjusted according to actual needs, so that the air outlets 611 can be blocked. Four closing plates 76 are symmetrically arranged between the upper and lower belts 71. The size of the closing plate 76 is larger than the size of the docking port 613. When the shielding plate 72 is in the open state, the closing plate 76 is located directly in front of the docking port 613. At this time, the closing plate 76 will block and close the docking port 613, and the remaining shielding plates 72 will not block the air outlet 611. When the shielding plate 72 blocks the air outlet 611, the closing plate 76 moves accordingly. At this time, there is a certain opening between the closing plate 76 and the docking port 611, which facilitates the circulation of air.

[0023] The wind shielding mechanism 8 includes a plurality of shutters 81 arranged in parallel in the opening of the lower frame 62, and a mounting shaft frame 83 is symmetrically arranged on the front and rear sides above each shutter 81, and the mounting shaft frame 83 is rotatably connected to the inner wall of the lower frame 62 through a shaft pin, and a linkage rod 82 is rotatably installed on the upper rear side of the shutter 81 through the shaft frame and the shaft pin, and a plurality of notches distributed at equal intervals are opened at the bottom end of the upper frame 61, and the upper end of the linkage rod 82 passes through the notch and is placed above the interior of the upper frame 61; A fixed shaft 84 is rotatably mounted on the upper end of the linkage rod 82, and the rear end of the fixed shaft 84 is fixed to the corresponding shielding plate 72. When the shielding plate 72 at the rear side moves to the left under the action of the electric push rod, the linkage rod 82 will deviate to the right, and the left end of the shutter will deflect along the axis of the mounting shaft frame 83, so that two adjacent shutters 81 will be separated from each other and abut against each other to form an opening, thereby allowing the airflow below to flow upward; There is a certain gap between the multiple louvers 81, so as to facilitate the upward flow of the gas below. When the blocking mechanism 7 is opened, part of the airflow below can also flow upward, making the upward flow of the airflow in the transport compartment 1 more uniform.

[0024] A connecting hole 612 is provided on the right side surface of the upper frame 61, and the connecting hole 612 is connected to the inside of the upper frame 61. The limiting mechanism 9 includes two guide plates 95 symmetrically arranged above the right end of the inner wall of the transport carriage 1. The guide plate 95 is slidably sleeved with a guide rod 98, and a limiting block 92 is fixed at the bottom end of the guide rod 98. A downward compression spring 97 is sleeved on the guide rod 98, and the upper and lower ends of the downward compression spring 97 are respectively abutted against the lower surface of the guide plate 95 and the upper surface of the limiting block 92. The top of the guide rod 98 is connected to a pulling rope 93, and the other end of the pulling rope 93 passes through the connecting hole 612 and is connected to the shielding plate 72; A snap-fit ​​seat 91 is fixed on the inner side of the two door panels 12, and a limiting notch 912 is provided on the snap-fit ​​seat 91. The limiting block 92 slides up and down and is placed in the limiting notch 912. When the blocking mechanism 7 is in the open state, that is, the baffle plate 72 is misaligned with the air outlet 611, the baffle plate 72 does not block the air outlet 611. At this time, the limiting block 92 is in the limiting notch 912 of the snap-fit ​​seat 91, so that the door panel 12 can be limited and cannot be opened, and the user can be reminded that the ozone inside the transport compartment 1 has not been removed, thereby improving safety.

[0025] A wire wheel 94 is rotatably mounted on the right side of the outer wall of the upper frame 61 through a bracket, and a wire wheel 96 is rotatably mounted on the top of the transport carriage 1 through a bracket. The pulling rope 93 passes through the wire wheel 96 and the wire wheel 94 in sequence and is connected to the shielding plate 72. The wire wheel 96 makes the part of the pulling rope 93 above the guide rod 98 vertically downward, so that the pulling rope 93 makes it easier for the guide rod 98 to move vertically up and down, thereby minimizing the force required for the guide rod 98 to move up and down. When the electric push rod 75 moves the baffle plate 72 counterclockwise, the baffle plate 72 connected to the pull rope 93 will pull the pull rope 93, and the end of the pull rope 93 away from the baffle plate 72 will pull the guide rod 98 below to move upward, thereby causing the limit block 92 to move upward, and the limit block 92 disengages from the limit notch 912 of the clamping seat 91, so that the door panel 12 can be opened.

[0026] The side surface of the clamping seat 91 away from the door panel 12 is designed to form a sliding inclined surface 911, and the side surface of the limiting block 92 close to the door panel 12 is designed to form a contact sliding surface 921. The limiting notch 912 and the other side surface of the limiting block 92 are designed to be vertical. When the door panel 12 is rotated inward to close, the sliding slope 911 of the clamping seat 91 abuts against the contact sliding surface 921 of the limit block 92, and the limit block 92 can move upward along the sliding slope 911. When the door panel 12 is completely closed, the limit block 92 can be stuck in the limit notch 912, thereby limiting the door panel 12.

[0027] Working principle: Fruits and vegetables are stored inside the transport carriage 1 and during transportation, the power supply of the electrostatic generator 2 is turned on. When direct current is applied to the fresh-keeping electrode plate 5, a uniform electric field is generated between the electrodes. The electrostatic field ionizes the air to generate positive charges and electrons. Ozone and negative ions are released in this process. Ozone can kill microorganisms and bacteria and control the reproduction of microorganisms in the environment, thereby effectively extending the shelf life of fruits and vegetables and inhibiting the maturation and aging of fruits and vegetables. Negative ions can change the membrane potential of fruit and vegetable cells and affect the electron transfer process of their respiratory system, thereby reducing the respiratory intensity of fruits and vegetables and delaying the aging process. In addition, negative ions can react with ethylene released by fruits and vegetables to generate CO2 and water, inhibiting the maturation and aging of fruits and vegetables after harvest.

[0028] Since the molecular weight of ozone is 48, while the molecular weight of air is 29, the molecular weight of ozone is larger and ozone will sink to the bottom of the transport compartment 1. The power of multiple axial flow fans 63 is turned on. At this time, the wind shield mechanism 8 is in a closed state, the blocking mechanism 7 is in an open state, and there is a certain gap between the multiple shutters 81, which allows the airflow at the bottom of the transport compartment 1 to enter the absorption cavity through the absorption port 661, and enter the inner cavity of the lower frame 62 through the air collecting pipe 65 and the connecting pipe 64, and then enter the upper frame 61 through the axial flow fan 63. At this time, the electric sunroof 13 is in a closed state, and the ozone gas inside the upper frame 61 will diffuse to the outside through the air outlet 611 and sink again, so that the ozone at the bottom is continuously absorbed to the top, and then sinks again, thus forming a cycle, so that the upper and lower fruits and vegetables can come into contact with the ozone.

[0029] When transported to a location close to the destination, the two electric sunroofs 13 can be opened in advance, and the power supplies of the two electric push rods 75 can be turned on. When the weather is clear, the power supply of the axial flow fan 63 can be turned off. At this time, the push rods of the two electric push rods 75 can be extended at the same time, and the shielding plates 72 connected to the electric push rods 75 will rotate counterclockwise, that is, the shielding plates 72 on the rear side move to the left, and the multiple shielding plates 72 on the front side move to the right, so that the upper and lower belts 71 move along the guide pulley 731, so that the multiple shielding plates 72 move synchronously by a unit distance, and the shielding plates 72 at this time can block and block the air outlet 611, and the closing plate 76 will also move away from the docking port 613 to form an opening; When the rear shielding plate 72 moves to the left and the front shielding plate 72 moves to the right, the linkage rod 82 will be offset to the right, and the left end of the shutter will be deflected about the axis of the mounting shaft frame 83, and the two adjacent shutters 81 will be separated from each other to form an opening. At this time, the wind shielding mechanism 8 is in the open state, which is convenient for the gas below to flow upward quickly. At this time, the airflow in the transport compartment 1 will all flow upward through the opening below the lower frame 62, so that the ozone in the transport compartment 1 can be quickly discharged and its concentration is below the standard value; When driving in rainy days, the electric sunroof 13 is closed, the wind shield mechanism 8 and the blocking mechanism 7 are opened, and the airflow will flow along the outer walls of the front and rear sides of the transport compartment 1. Due to the fast flow speed of the airflow, the air pressure outside the transport compartment 1 is lower than the pressure inside the exhaust pipe 4, forming a pressure difference, and the gas inside the exhaust pipe 4 will be sucked outward. When the electric sunroof 13 is not opened on rainy days, the gas inside the upper frame 61 can be directly discharged outward through the exhaust pipe 4; When driving to the designated location to unload, the door panel 12 can be opened. When the wind shield mechanism 8 and the blocking mechanism 7 are not opened for exhaust, the door panel 12 cannot be opened at this time, which can remind personnel that the internal ozone concentration is high and needs to be opened again after exhaust.

[0030] By arranging a fresh-keeping electrode plate 5 in the transport compartment 1 and cooperating with the electrostatic generator 2, ozone and negative ions are contained in the transport compartment 1, thereby effectively extending the shelf life of fruits and vegetables and inhibiting the ripening and aging of fruits and vegetables. By cooperating with the gas circulation component 5 and the wind shielding mechanism 8, the ozone at the bottom of the transport compartment 1 is continuously absorbed to the top and then sinks again, thus forming a cycle, so that the fruits and vegetables above and below can all come into contact with the ozone, ensuring that the fruits and vegetables can all come into contact with the ozone and ensuring the fresh-keeping effect; By arranging a blocking mechanism 7 and a wind shielding mechanism 8 inside the gas circulation assembly 5, in conjunction with the exhaust pipe 4, the ozone in the transport compartment 1 can be discharged in any weather, so that the concentration is below the standard value, thereby ensuring the health of the workers during unloading; By arranging a limiting mechanism 9 on the door panel 12, and connecting the limiting mechanism 9 with the blocking mechanism 7, when the wind shielding mechanism 8 and the blocking mechanism 7 are not opened for exhaust, the door panel 12 cannot be opened at this time, which can remind people that the internal ozone concentration is high and needs to be opened again after exhaust, thereby improving safety.

[0031] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electrostatic field preservation device for cold chain transportation, characterized in that: The transport carriage (1) comprises a refrigeration device (11) and an electrostatic generator (2) installed on the left side of the transport carriage (1), two door panels (12) installed on the right side of the transport carriage (1) via hinges, a limiting mechanism (9) is provided at the upper end of the inner side of each of the two door panels (12), two sets of electric skylights (13) are installed on the roof of the transport carriage (1), and an air guide hood (3) is installed above the top of the transport carriage (1), and a plurality of equally spaced fresh-keeping electrode plates (5) are installed on the inner walls of the front and rear sides of the transport carriage (1), and the fresh-keeping electrode plates (5) are electrically connected to the electrostatic generator (2); A gas circulation assembly (6) is installed at the top of the interior of the transport carriage (1), and the gas circulation assembly (6) comprises an upper frame (61) fixed at the top of the interior of the transport carriage (1). The two electric skylights (13) are located directly above the upper frame (61). A plurality of evenly distributed axial flow fans (63) are installed at the bottom of the interior of the upper frame (61). The outer surface of the upper frame (61) is provided with a plurality of evenly distributed air outlets (611). A blocking mechanism (7) for blocking the air outlets (611) is installed inside the upper frame (61). A lower frame (62) is screwed to the bottom of the upper frame (61). An opening is formed through the bottom of the lower frame (62). A wind shielding mechanism (8) for adjusting the air volume is installed in the opening. The wind shielding mechanism (8) and the limiting mechanism (9) are both connected to the blocking mechanism (7).

2. The electrostatic field preservation device for cold chain transportation according to claim 1, characterized in that: An absorption tube (66) is installed between every two adjacent fresh-keeping electrode plates (5); a gas collecting tube (65) is installed between the top ends of the plurality of absorption tubes (66) on the same side; a plurality of evenly distributed connecting tubes (64) are installed at the top end of the connecting tube (65); the other end of the connecting tube (64) is connected to the outer wall of the lower frame (62), and the inner cavity of the connecting tube (64) is connected to the interior of the lower frame (62); The absorption tube (66) is hollow inside to form an absorption chamber, the interior of the gas collecting pipe (65) is connected to the absorption chamber, and the outer surface of the absorption tube (66) is provided with a plurality of evenly distributed absorption ports (661) from bottom to top, and the absorption ports (661) are connected to the absorption chamber.

3. The electrostatic field preservation device for cold chain transportation according to claim 1, characterized in that: The upper frame (61) is provided with a docking port (613), and two sets of exhaust pipes (4) are respectively installed at the front and rear ends of the upper frame (61), an inward end of the exhaust pipe (4) overlaps with the docking port (613) of the upper frame (61), and the other end of the exhaust pipe (4) is fixed to the side wall of the transport carriage (1), and the exhaust pipe (4) passes through the transport carriage (1) and is placed outside the carriage.

4. The electrostatic field preservation device for cold chain transportation according to claim 1, characterized in that: The blocking mechanism (7) comprises four mounting columns (73) respectively fixed at the inner corners of the upper frame (61); a guide pulley (731) is rotatably mounted on the upper and lower ends of the mounting columns (73); a belt (71) is tensioned between the upper and lower four guide pulleys (731); a plurality of evenly distributed shielding plates (72) are mounted between the upper and lower belts (71); and the shielding plates (72) are in sliding contact with the inner wall of the upper frame (61); A rectangular abutment frame (74) is fixed between the four mounting columns (73); the outer surface of the abutment frame (74) is in sliding contact with the inner surfaces of the plurality of shielding plates (72); an electric push rod (75) is respectively installed on the front and rear sides above the abutment frame (74); and the push rod of the electric push rod (75) is connected to the shielding plate (72).

5. The electrostatic field preservation device for cold chain transportation according to claim 4, characterized in that: The number of the shielding plates (72) is the same as the number of the air outlets (611), and the length and width of the shielding plates (72) are greater than the length and width of the air outlets (611), and the shielding plates (72) and the air outlets (611) are arranged in a staggered manner; Four closing plates (76) are symmetrically arranged front and back between the upper and lower belts (71); the size of the closing plates (76) is larger than the size of the docking port (613); when the shielding plate (72) is in the open state, the closing plates (76) are located directly in front of the docking port (613).

6. The electrostatic field preservation device for cold chain transportation according to claim 4, characterized in that: The wind shielding mechanism (8) comprises a plurality of shutters (81) arranged in parallel in the opening of the lower frame (62), a mounting shaft frame (83) being symmetrically arranged on the front and rear sides above each shutter (81), the mounting shaft frame (83) being rotatably connected to the inner wall of the lower frame (62) via a shaft pin, a linkage rod (82) being rotatably mounted on the upper rear side of the shutter (81) via the shaft frame and the shaft pin, a plurality of notches distributed at equal intervals being opened at the bottom end of the upper frame (61), the upper end of the linkage rod (82) passing through the notch and being placed above the interior of the upper frame (61); A fixed shaft rod (84) is rotatably mounted on the upper end of the linkage rod (82), and a rear end of the fixed shaft rod (84) is fixed to a shielding plate (72).

7. The electrostatic field preservation device for cold chain transportation according to claim 4, characterized in that: A connecting hole (612) is provided on the right side surface of the upper frame (61), and the connecting hole (612) is connected to the interior of the upper frame (61). The limiting mechanism (9) comprises two guide plates (95) symmetrically arranged above the right end of the inner wall of the transport carriage (1). The guide plates (95) are slidably sleeved with guide rods (98) in an upward and downward manner. A limiting block (92) is fixed at the bottom end of the guide rod (98). A downward compression spring (97) is sleeved on the guide rod (98). The upper and lower ends of the downward compression spring (97) are respectively in contact with the lower surface of the guide plate (95) and the upper surface of the limiting block (92). The top end of the guide rod (98) is connected to a pulling rope (93), and the other end of the pulling rope (93) passes through the connecting hole (612) and is connected to the shielding plate (72). A clamping seat (91) is fixed to the inward side of each of the two door panels (12); a limiting notch (912) is provided on the clamping seat (91); and the limiting block (92) slides up and down and is placed in the limiting notch (912).

8. The electrostatic field preservation device for cold chain transportation according to claim 7, characterized in that: A wire wheel 1 (94) is rotatably mounted on the right side of the outer wall of the upper frame (61) via a bracket, and a wire wheel 2 (96) is rotatably mounted on the top of the transport carriage (1) via a bracket, and the pulling rope (93) passes through the wire wheel 2 (96) and the wire wheel 1 (94) in sequence and is connected to the shielding plate (72).

9. The electrostatic field preservation device for cold chain transportation according to claim 7, characterized in that: The surface of the clamping seat (91) on one side away from the door panel (12) is designed to form a sliding inclined surface (911), the surface of the limit block (92) on one side close to the door panel (12) is designed to form a contact sliding surface (921), and the limit notch (912) and the other side surface of the limit block (92) are designed to be vertical.

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