An intelligent fresh leaf preservation device for tea leaf picking and its preservation method

Abstract

The present invention provides a fresh leaf intelligent preservation device for tea leaf picking and its preservation method. By using ice bags for refrigeration, not only the refrigeration cost is reduced, but also recycling can be formed. Compared with refrigeration machines, energy conservation and emission reduction can be achieved, and the self-weight can be reduced. Secondly, the mesh cylinder and the mesh pull-out box enable the condensed water to hang on the net and fully contact with the air flow. This can not only quickly cool down, but also quickly and effectively increase humidity. The low-temperature and humidity-maintaining air flow enters the inside of the box body, passes through the stored fresh leaves and then is discharged, forming a cycle, which can continuously maintain the temperature and humidity inside the box body, avoiding the reddening caused by the local overheating of the fresh leaves due to stacking and blocked air flow, effectively extending the tea picking time, and ensuring the preservation effect during the journey between the tea mountain and the storage point, guaranteeing the quality of the picked tea leaves, and improving the storage and transportation quality of the fresh tea leaves.

Description

Technical Field

[0001] The invention relates to the field of fresh-keeping equipment for picking tea leaves, and in particular to an intelligent fresh-keeping device for picking tea leaves and a fresh-keeping method thereof. Background Art

[0002] Pu'er tea is made from Yunnan large-leaf sun-dried green tea leaves, which are processed into loose tea and compressed tea after post-fermentation. When drinking Pu'er raw tea, we will unconsciously look at the bottom of the leaves, which is also a kind of interest. Generally speaking, good raw tea buds and leaves are plump, tender and soft, and the color is chestnut brown, but sometimes we will also find red stems and red leaves at the bottom of the leaves.

[0003] Polyphenol oxidase in fresh leaves and tea stems catalyzes the oxidation of tea polyphenols to form thearubigins. When thearubigins accumulate to a certain level, the tea stems will appear red. There are many possible reasons for the appearance of red stems or leaves in Pu'er tea, but they are mainly concentrated in the picking, production and later storage.

[0004] When picking fresh leaves, use your fingers to pinch and lift to break the tea stems. Do not pinch them directly with your fingernails to avoid red stems. In addition, you need to pay attention to the integrity of the buds and leaves. Do not pinch them tightly in your hands for a long time. Do not press them tightly in the tea basket to avoid the buds and leaves from breaking, the leaf temperature rising, and early fermentation. The picked fresh leaves should be placed in a cool place and handled in time for primary processing. The fresh leaves picked by tea farmers are not spread out directly to dry. Many of them carry a backpack or a shoulder bag or bag. First, put the picked tea leaves in the bag, and when a certain amount is picked, pour the tea leaves into the backpack or sack. The fresh leaves have to spend some time in the tea farmer's backpack or pocket. During this time, the fresh leaves are covered together, and the temperature in the middle is high. During the day, the fresh leaves may be exposed to the sun. The tea in the middle will naturally be heated. The covered part of the tea may have red stems and red leaves. After the withering and rolling process, red stems and red leaves will appear.

[0005] Many tea farmers use baskets to transport tea leaves into the mountains. The freshly picked leaves are in contact with the baskets, and the fresh leaves are inevitably damaged. The red stems of damaged fresh leaves are generally scattered and random, which is common in sun-dried green tea. Many tea leaves grown in the primeval forests take a long time to transport due to the long distance. The transportation is inconvenient and the distance is long. These fresh leaves cannot be handled in time after picking. The road is bumpy, and the tea leaves constantly collide with the container. In addition, the sun may cause changes in the internal substances of the tea leaves, which may cause red stems and red leaves. As for some teas that do not have red stems, but there is a circle of slightly reddish edges on the tea leaves, it is because the fresh leaves are picked and placed in the baskets. The tea farmers bump when walking, and the edges of the leaves rub against the baskets and oxidize. After the green leaves are withered, the edges of the leaves turn red.

[0006] From tea leaves picking to withering, the process sometimes takes 2-3 hours (or even half a day if the journey is long). The fresh leaves are covered together for a long time, and the temperature of the inner tea leaves is high. If exposed to the sun, the tea leaves in the middle will naturally be heated. The covered tea leaves will have red stems and red leaves after withering and rolling.

[0007] In the process of tea making, the length of time for the tea leaves to be spread out to dry is also very particular. If the fresh leaves are picked and spread out for too long or too short a time, it will affect the overall taste and quality of the tea. After the fresh leaves are sent back, the picked fresh leaves should be spread out as soon as possible to avoid the picked fresh leaves being placed in the back basket and bag for a long time, which will cause the fresh leaves to be poorly ventilated, squeezed, suffocated, heated and red, and affect the quality. The purpose of spreading out to dry is not only to lose water but also to prevent the fresh leaves from fermenting, resulting in red stems and red leaves. The time for spreading out to dry is generally not more than 3 hours. If the time is too long, it may cause red stems and red leaves to appear in the tea. However, if the time is not enough, it may affect the later withering of the tea leaves, as well as the taste and later transformation of the tea products.

[0008] The quality of dried tea is affected by the storage of fresh tea leaves. If the temperature is too high during storage, the tender tips of fresh tea leaves will burn red. The burned red tea leaves will emit heat, causing the surrounding tea leaves to burn red, which is like a disease. High temperature will also cause the broken ends of fresh tea leaves that are bent or rubbed during transportation to turn red. Both of these situations affect the color of the finished product. Under normal circumstances, the storage temperature of fresh tea leaves is controlled below 30℃. There are two measures to take: frequently turning the fresh leaves to dissipate heat; and increasing ventilation and exhaust in the yard. Summary of the invention

[0009] In order to solve the deficiencies of the above-mentioned prior art, the inventors have developed and designed a device for intelligent preservation of fresh tea leaves for tea picking, so that the picked tea leaves can be stored in a ventilated and low-temperature space in time, ensuring that the temperature will not be too high and increasing the flow of air, so that the fresh leaves can be kept fresh, avoiding the phenomenon of red leaves and red stems, and improving quality.

[0010] Specifically, the present invention is achieved as follows:

[0011] An intelligent fresh-leaf preservation device for tea picking comprises a box body, a shoulder strap connected to the back side of the box body, a bottom sandwich area at the bottom of the box body, an air induced groove connected to the outside is opened on the bottom surface of the box body, an air induced fan is installed in the air induced groove, the air induced groove and the bottom sandwich area are connected by installing a ventilation partition, a replaceable first ice bag is placed in the bottom sandwich, the top of the bottom sandwich area is connected to the inside of the box body through a plurality of micropores, an openable and closable top cover is provided on the top of the box body, at least one air outlet mesh port is opened on the side or front of the upper part of the box body, a battery and a motor are built-in at the bottom of the box body, the battery is connected to the motor, and the motor is connected to the air induced fan through a transmission component.

[0012] Furthermore, a back sandwich area is provided inside the back side of the box body. The back sandwich area communicates with the bottom sandwich area at the lower end. A replaceable second ice pack is horizontally inserted below the back sandwich area, and a number of air guiding outlets are provided in the inner back plate area of the box body. The inside of the box body communicates with the back sandwich area through the number of air guiding outlets.

[0013] Furthermore, the bottom sandwich area has a first opening on the front or side of the box body, and a draw box is installed in a drawable manner from the first opening. The draw box is in the shape of a mesh box frame. The first ice pack is placed in the draw box and enters the bottom sandwich area through the first opening.

[0014] Furthermore, the second ice pack is loaded in a mesh cylinder, and the mesh cylinder is horizontally inserted into the lower end of the back sandwich area.

[0015] Furthermore, the top cover is connected to an open / close cover motor provided on the top of the box body, and the automatic opening and closing of the cover is realized through the open / close cover motor.

[0016] Furthermore, the top cover is of a split structure. The front half and the rear half are hinged. The rear half is connected to the open / close cover motor. The rear half can rotate up and down through the open / close cover motor. The two end vertices of the front half extend horizontally outwards and are placed in the slide rails on both sides of the top opening of the box body. The front half slides in the slide rails following the movement of the rear half.

[0017] Furthermore, the open / close cover motor is connected to an induction device or an open / close cover button beside the top cover installed on the top of the box body.

[0018] Furthermore, the cross-sectional width of the box body gradually increases from top to bottom, and the back side of the box body is in a human body arc shape.

[0019] Furthermore, a number of hanging devices are installed in the top area inside the box body. The top edge of the gauze bag is hung on the hanging devices. The gauze bag is hung in the air, and there are gaps between its periphery and bottom and the inner wall of the box body.

[0020] Introduction to the working principle of the present invention:

[0021] The box body is made of plastic material. A storage battery and a micro motor are built in the bottom. The air guiding fan installed on the bottom surface of the box body rotates at an adjustable speed, which can drive the air to slowly flow inside, forming an air flow cycle. The air flow is brought in by the air guiding fan from the air guiding groove, and after passing through the ventilation partition board, the air flow contacts the first ice pack. The cooled air passes through the micropores and enters the interior of the box body. Some of the air will also enter the back sandwich area and contact the second ice pack, and then flow into the interior of the box body from the air guiding outlet on the back side, so as to realize the contact between the multi-directional low-temperature air flow and the fresh leaves in the box body, making the temperature inside the box and the temperature between the fresh leaves not too high, achieving the effect of low-temperature preservation. On the other hand, the design of using ice packs is convenient and environmentally friendly. The ice packs are carried by a hollowed-out mesh carrier, so that the water droplets condensed after contacting the ice packs will hang on the mesh carrier. When the air passes through these carriers, it will fully contact the water droplets, which can quickly and effectively increase the humidity of the air. After passing through the two ice pack positions, the humidity of the air can be increased to a humidity condition suitable for the preservation of fresh tea leaves. Therefore, not only the cooling preservation is realized, but also the humidity environment of the internal tea leaves is guaranteed, avoiding excessive dryness after being blown by the wind. When in use, the tea picker can carry this device on the back or in front of the chest. Its opening structure is designed as an electric automatic opening, and the opening principle is similar to the opening structure of the existing automatic opening trash can. After opening the lid through the sensor or button, the tea leaves can be stored.

[0022] The polyphenol oxidase in the tea stems of fresh tea leaves catalyzes the oxidation of tea polyphenols to form thearubigins. When thearubigins accumulate to a certain level, the tea stems and tea leaves will appear red. It can be seen that the reddening of fresh leaves is also related to the oxidation of tea polyphenols, and the activity of polyphenol oxidase is optimal when the temperature is between 25 degrees Celsius and 75 degrees Celsius. Therefore, as long as the ambient temperature of the fresh leaves is lowered to below 25 degrees Celsius, the oxidation of tea polyphenols and the reddening of tea leaves can be effectively prevented. However, in high-temperature areas such as summer, it is difficult to effectively control the temperature below 25 degrees Celsius by relying solely on ice bags for cooling, so it is necessary to avoid contact between tea leaves and oxygen as much as possible. Therefore, in another embodiment of the present invention, a gauze bag is hung on the inner cavity wall to solve this problem. Technical issues: In actual use, the gauze bag is soft in nature, which can effectively prevent the friction between the edge of the tea bag and the edge of the box caused by shaking, and effectively avoid the redness of the tea caused by friction. On the other hand, outside the gauze bag is a low-temperature airflow with high humidity. The characteristics of the gauze material can make temperature heat conduction unimpeded, which is conducive to heat exchange under the action of low-temperature airflow and reduce the temperature in the bag as much as possible. On the other hand, it can absorb the condensation water generated by the heat exchange of the internal tea leaves, and avoid the phenomenon that the local tea leaves are soaked in condensation water due to excessive temperature difference and affect the quality. It can also effectively block most of the air from direct contact with the fresh tea leaves, that is, reduce the contact amount of tea leaves with oxygen, thereby effectively reducing the oxidation rate of tea polyphenols. The characteristic of gauze is that it has strong water absorption ability. On the one hand, it can prevent the fresh tea leaves from being too humid. On the other hand, the air permeability of the gauze area that absorbs water is much worse than that of the dry area. Therefore, when there is flowing airflow outside the gauze bag, the direction of the gas entering the gauze bag will change due to the local absorption of water, and it will preferentially enter the bag from the dry local area. The fresh tea leaves in the dry local area often need to come into contact with low-temperature gas more. With this characteristic, the gauze bag forms a flexible mode for controlling the direction and entrance of gas exchange, so that the tea leaves in the bag can come into contact with the low-temperature airflow more evenly, effectively but appropriately, and cooperate with the heat absorption effect brought about by the evaporation of water after the gauze bag absorbs water, so that the tea leaves in the gauze bag find a balance between maintaining low temperature and ventilation and avoiding excessive contact leading to oxidation, so that the picked fresh leaves can get the best effect of preserving freshness and preventing reddening in the harsh high-temperature external environment.

[0023] The beneficial effects of the present invention are introduced as follows:

[0024] (1) Using ice packs for refrigeration not only reduces the refrigeration cost, but also enables recycling. Compared with refrigeration machines, it can save energy and reduce emissions, as well as reduce the self-weight. Secondly, the mesh cylinder and the mesh pull-out box enable the condensed water to hang on the net and come into full contact with the air flow. This can not only cool down quickly, but also increase humidity quickly and effectively. The low-temperature and humid air flow enters the inside of the box, passes through the stored fresh leaves and then is discharged, forming a cycle, which can continuously maintain the temperature and humidity inside the box, avoiding the redness of fresh leaves caused by local overheating due to stacking and blocked air flow, effectively extending the tea picking time, and ensuring the freshness effect during the journey between the tea mountain and the storage point, guaranteeing the quality of the picked tea, and improving the storage and transportation quality of fresh tea leaves.

[0025] (2) Utilizing the water absorption and air permeability of the gauze bag can effectively control and maintain the environmental conditions of the tea leaves inside the bag. It has a low cost but a remarkable effect, and can also prevent the redness of tea leaves caused by friction and the accelerated oxidation caused by excessive contact with oxygen in the air, achieving a dual guarantee of temperature control and oxygen control, further expanding the freshness preservation effect of freshly picked tea leaves, and effectively guaranteeing the quality of fresh tea leaves.

[0026] (3) By installing a built-in temperature and humidity sensor and a controller, this device can monitor the temperature and humidity values inside the box. When the temperature and humidity values exceed the preset values, it can control the rotation speed of the induced draft fan to adjust the amount of incoming air, so as to keep the temperature and humidity inside the box always within the range most conducive to the freshness preservation of fresh leaves, realizing intelligent control and management.

[0027] (4) The overall equipment structure is scientific and reasonable, made of lightweight plastic. Only the ice pack and the battery are slightly heavier, but the size of the ice pack can be reasonably selected according to the picking distance and duration, resulting in a relatively light overall weight, suitable for manual carrying on the back. It can be worn flexibly in a backpack style on the back, a front-carrying style, or a cross-body style according to the picking habit, without causing additional load, achieving a balance between the true temperature control and freshness preservation function and the portable product. Description of the Drawings

[0028] Figure 1 is the three-dimensional external view structure diagram of a fresh leaf intelligent freshness preservation device for tea picking in the present invention;

[0029] Figure 2 is the three-dimensional rear view structure diagram of a fresh leaf intelligent freshness preservation device for tea picking in the present invention;

[0030] Figure 3 is the three-dimensional bottom view structure diagram of a fresh leaf intelligent freshness preservation device for tea picking in the present invention;

[0031] Figure 4Schematic diagram of the installation structure of the pull-out box and the mesh cylinder of an intelligent fresh leaf preservation device for tea picking according to the present invention;

[0032] Figure 5 Schematic perspective sectional view of an intelligent fresh leaf preservation device for tea picking according to the present invention;

[0033] Figure 6 Schematic diagram of the cross-sectional structure and air flow direction of the present invention;

[0034] Figure 7 Schematic cross-sectional view of the use state of the present invention;

[0035] Figure 8 Schematic diagram of the structure of the first ice pack and the pull-out box;

[0036] Figure 9 Schematic cross-sectional view of an intelligent fresh leaf preservation device for tea picking with a gauze bag installed in Example 3;

[0037] Wherein: 1 - box body, 2 - shoulder strap, 3 - bottom sandwich area, 4 - air guiding groove, 5 - air guiding fan, 6 - ventilation partition, 7 - first ice pack, 8 - micropores, 9 - top cover, 10 - air outlet net, 11 - storage battery, 12 - transmission component, 13 - back sandwich area, 14 - second ice pack, 15 - air guiding outlet, 17 - pull-out box, 18 - mesh cylinder, 19 - front half section, 20 - rear half section, 21 - induction device or opening button, 22 - gauze bag, 23 - hook. Detailed implementation manners

[0038] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the specific implementation manners and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present invention. In addition, in the following descriptions, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0039] Embodiment 1: An intelligent fresh leaf preservation device for tea leaf picking, including a box body 1, a shoulder strap 2 connected to the back side of the box body 1, a bottom interlayer area 3 inside the bottom of the box body 1, an air guiding groove 4 opened on the bottom surface of the box body 1 and communicating with the outside, an air guiding fan 5 installed in the air guiding groove 4, the air guiding groove 4 and the bottom interlayer area 3 are connected and communicated through an installed ventilation partition 6, a replaceable first ice pack 7 is placed in the bottom interlayer, the top of the bottom interlayer area 3 is connected to the inside of the box body 1 through a plurality of micropores 8, a top cover 9 that can be opened and closed is provided at the top of the box body 1, at least one air outlet net opening 10 is opened on the side or front of the upper part of the box body 1, a storage battery 11 and a motor are built in the bottom of the box body 1, the storage battery 11 is connected to the motor, and the motor is connected to the air guiding fan 5 through a transmission component 12. Preparation work: Take out the first ice pack 7 from the refrigeration equipment and place it in the bottom interlayer area 3. Start picking tea leaves. After picking the fresh tea leaves, open the top cover 9. The top cover 9 can be manually opened or designed to be electrically opened. After placing it inside the box body 1, start the air guiding fan 5. The air guiding groove 4 communicates with the outside air. The outside air is attracted by the air guiding fan 5 and enters the bottom interlayer area 3. After contacting the first ice pack 7 and exchanging heat, the temperature of the air flow drops. The low-temperature air flow passes through the micropores 8 and then enters the inside of the box body 1. After passing through the fresh tea leaves from the bottom, it exits from the air outlet net opening 10 at the top, completing the effect of reducing and controlling the internal temperature, so that the fresh tea leaves are subjected to low-temperature preservation treatment. The outer shell of the box body 1 is made of lightweight materials such as plastic, and heat insulation materials can be added to the inner layer. The storage battery 11 and the transmission component 12 driving the air guiding fan 5 to rotate are existing technical means, and technicians can know how to set the transmission connection relationship, so no further description will be made for this part.

[0040] Embodiment 2: On the basis of Embodiment 1, preferably, a back interlayer area 13 is provided inside the back side of the box body 1. The back interlayer area 13 communicates with the bottom interlayer area 3 at the lower end. A replaceable second ice pack 14 is horizontally inserted below the back interlayer area 13, and a plurality of air guiding outlets 15 are opened in the inner back panel area of the box body 1. The inside of the box body 1 is connected to the back interlayer area 13 through a plurality of air guiding outlets 15. Such a design, on the one hand, increases the number of times of heat exchange area and can improve the heat exchange and cooling effect. On the other hand, it can divert a part of the air flow. After passing through the back interlayer area 13, it enters the box body 1 horizontally from the back side. In this way, the air flow passing through the fresh tea leaves inside the box body 1 is not only the air flow from the bottom to the top, but also the air flow entering horizontally and at different heights. The increased air flow direction can better drive the air flow of the fresh tea leaves from multiple directions, further reducing the air flow dead angle, and thus being able to better achieve the preservation effect. The inlet air speed can be controlled. If it is too slow, the effect is not good. If it is too fast, the dryness is likely to increase. The pickers or technicians should consider setting the rotation speed adjustment of the air guiding fan according to actual use environments, climatic conditions and other factors.

[0041] Preferably, the bottom sandwich area 3 is provided with a first opening on the front or side of the box body 1, and a drawer box 17 is installed in a pull-out manner from the first opening. The drawer box 17 is in the shape of a mesh box frame. The first ice bag 7 is placed in the drawer box 17 and enters the bottom sandwich area 3 through the first opening. Designed in the form of the drawer box 17, it can improve the convenience of replacing and installing the ice bag. The grid-shaped design of the drawer box 17 enables the pre-condensed water droplets to hang on the grid. When the air flow passes through, it can accelerate the evaporation of the water droplets, humidify the air flow, so that the air flow entering the box body 1 is not only at a low temperature but also has a certain humidity, which can effectively prevent the drying effect on the fresh leaves caused by the air flow; thus further improving the fresh-keeping effect and ensuring the quality of the fresh tea leaves.

[0042] Similarly, the second ice bag 14 is loaded in the mesh cylinder 18, and the mesh cylinder 18 is horizontally inserted into the lower end of the back sandwich area 13. It can also humidify the air flow while realizing the convenient replacement of the second ice bag 14.

[0043] The top cover 9 is connected to an open / close cover motor provided on the top of the box body 1, and the automatic opening and closing of the cover is realized through the open / close cover motor. The top cover 9 is of a split structure, with the front half 19 and the rear half 20 hinged. The rear half 20 is connected to the open / close cover motor, and the rear half 20 can rotate up and down through the open / close cover motor. The two end vertices of the front half 19 extend horizontally outwards and are placed in the slide rails on both sides of the top opening of the box body 1, and the front half 19 slides in the slide rails following the movement of the rear half 20. The open / close cover motor is connected to an induction device or an open / close cover button 21 installed beside the top cover 9 on the top of the box body 1. The cross-sectional width of the box body 1 gradually increases from top to bottom, and the back side of the box body 1 is in the shape of a human body arc.

[0044] Preferably, a temperature and humidity sensor and a controller are arranged inside the box body. The controller is a circuit board designed by integrated circuits, connected to the above-mentioned induction device, temperature and humidity sensor, and air guiding fan, and is used to make judgments based on the feedback of signals and send control signals. For example, when the induction device senses that a person's hand is blocked, it controls the open / close cover motor to drive the top cover 9 to open; when the temperature value feedback by the temperature and humidity sensor exceeds the preset threshold, the controller can control the rotation speed of the air guiding fan to change according to the pre-written control program to achieve the effect of adjusting the temperature and humidity; for example, when the temperature inside the box is higher than the preset value, the controller controls the air guiding fan to rotate faster, and when the humidity inside the box is lower than the preset value, the controller controls the air guiding fan to rotate slower; thus achieving the effect of intelligent control. Embodiment 3: As Figure 9As shown, on the basis of Embodiment 1 or Embodiment 2, several hanging devices are installed in the inner top area of the box body 1. The top edge of the gauze bag 22 is hung on the hanging device which is a hook 23. The gauze bag 22 is hung in the air, and there are gaps between its periphery and bottom and the inner wall of the box body 1. By using the water absorption and air permeability of the gauze bag, the environmental conditions of the tea leaves in the bag can be effectively controlled and maintained. The cost is low but the effect is remarkable. It can also prevent the tea leaves from turning red due to friction and prevent the tea leaves from being oxidized too quickly due to excessive contact with oxygen in the air, achieving a double guarantee of temperature control and oxygen control, further expanding the fresh-keeping effect on the freshly picked tea leaves, and effectively guaranteeing the quality of the freshly picked tea leaves.

[0045] It should be understood that the above specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. An intelligent fresh leaf preservation device for tea leaf picking, comprising a box body (1) and a shoulder strap (2) connected to the back side of the box body (1), characterized in that, The bottom of the box body (1) has a bottom sandwich area (3) inside. An air guiding groove (4) communicating with the outside is opened on the bottom surface of the box body (1). An air guiding fan (5) is installed in the air guiding groove (4). The air guiding groove (4) and the bottom sandwich area (3) are communicated through an installed ventilation partition board (6). A replaceable first ice bag (7) is placed in the bottom sandwich. The top of the bottom sandwich area (3) is communicated to the inside of the box body (1) through a plurality of micropores (8). A lid (9) that can be opened and closed is provided at the top of the box body (1). At least one air outlet mesh opening (10) is opened on the side or the front of the upper part of the box body (1). A storage battery (11) and a motor are built in the bottom of the box body (1). The storage battery (11) is connected to the motor. The motor is connected to the air guiding fan (5) through a transmission component (12); A back sandwich area (13) is provided inside the back side of the box body (1). The back sandwich area (13) is communicated to the bottom sandwich area (3) at the lower end. A replaceable second ice bag (14) is inserted horizontally below the back sandwich area (13), and a plurality of air guiding outlets (15) are opened in the inner back plate area of the box body (1). The inside of the box body (1) is communicated to the back sandwich area (13) through a plurality of air guiding outlets (15); A plurality of hanging devices are installed in the top area inside the box body (1). The top edge of the gauze bag (22) is hung on the hanging devices. The gauze bag (22) is hung in the air, and there are gaps between its periphery and bottom and the inner wall of the box body (1).

2. The intelligent fresh leaf preservation device for tea leaf picking according to claim 1, wherein The bottom sandwich area (3) has a first opening on the front or side of the box body (1), and a pull-out box (17) is installed in a pull-out manner from the first opening. The pull-out box (17) is in the shape of a mesh box frame. The first ice bag (7) is placed in the pull-out box (17) and enters the bottom sandwich area (3) through the first opening.

3. The intelligent fresh leaf preservation device for tea leaf picking according to claim 2, characterized in that, The second ice bag (14) is loaded in a mesh cylinder (18), and the mesh cylinder (18) is inserted horizontally into the lower end of the back sandwich area (13).

4. An intelligent fresh leaf preservation device for tea leaf picking according to claim 1, characterized in that, The lid (9) is connected to an open-lid motor provided on the top of the box body (1), and the automatic opening and closing movement of the lid is realized through the open-lid motor.

5. An intelligent fresh leaf preservation device for tea leaf picking according to claim 4, characterized in that The lid (9) is of a split structure. The front half section (19) and the rear half section (20) are hinged. The rear half section (20) is connected to the open-lid motor. The rear half section (20) can rotate up and down through the open-lid motor. The two end vertices of the front half section (19) extend horizontally outwards and are placed in the slide rails on both sides of the top opening of the box body (1). The front half section (19) slides in the slide rails following the movement of the rear half section (20).

6. The intelligent fresh leaf preservation device for tea leaf picking according to claim 5, wherein, The open-lid motor is connected to an induction device or an open-lid button (21) beside the lid (9) installed on the top of the box body (1).

7. An intelligent fresh leaf preservation device for tea leaf picking according to claim 1, characterized in that, The cross-sectional width of the box body (1) gradually increases from top to bottom, and the back side of the box body (1) is in the shape of a human body arc.

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