CN112938190B - A kind of kiwi modified atmosphere fresh-keeping box - Google Patents

Abstract

The invention provides a kiwifruit modified atmosphere fresh-keeping box, comprising: a box body, in which a container is rotatably arranged; a driving part is arranged on the lower side of the container; a fixed shaft sleeve, one end of which is fixedly connected with the container, and the other end is rotatable A fixing ring is connected to the ground, and the fixing ring is fixedly connected with the inner wall of the box body; a plurality of placing tables are evenly arranged on the circumference of the fixed shaft sleeve from bottom to top; wherein, the top of the box body is connected with an air intake pipe, and the air intake pipe is fixed by The ring is communicated with the cavity in the fixed shaft sleeve; the plurality of air inlet holes on the fixed shaft sleeve are arranged on the upper side of the corresponding placing table; the bottom of the container is provided with a plurality of exhaust holes, and the bottom of the box is provided with an exhaust channel , and the plurality of exhaust holes are all communicated with the exhaust passage; the exhaust passage is rotatably provided with an exhaust mechanism. Through the cooperation of a plurality of placing tables and the fixed shaft sleeve, along with the rotation of the container, the flow of the gas in the container can be accelerated and discharged from the container, which can achieve the effect of freshness preservation while delaying the respiration of the fruit body.

Description

A kind of kiwi modified atmosphere fresh-keeping box

technical field

The invention relates to the technical field of kiwifruit fresh-keeping equipment, in particular to a kiwifruit modified atmosphere fresh-keeping box.

Background technique

Kiwifruit is a climacteric fruit that is picked when it is not ripe and has an after-ripening effect. Since the kiwifruit after picking still maintains its respiration, it will not only consume nutrients, but also release ethylene gas, which will easily accelerate the decay of the kiwifruit, making the kiwifruit highly perishable when ripe. This also brings great difficulty to the storage, transportation and sale of kiwifruit.

At present, kiwifruit is generally packaged in a sealed carton after picking, and the airtight space formed by the carton will prevent the carbon dioxide and ethylene released by the kiwifruit during its breathing process from being discharged, which will easily catalyze the ripening degree of the kiwifruit and accelerate its decay. It not only affects the taste of the kiwifruit, but also affects the transportation. During the transportation process, the kiwifruit is softened due to accelerated ripening, and then the pulp is damaged, which affects the economic value of the kiwifruit.

In order to reduce the ripening rate of kiwifruit during transportation, refrigerated or cold chain transportation is usually used, but the cost of refrigerated or cold chain transportation is relatively high, and during transportation, due to its own respiration, there is still a softening of the fruit body. .

SUMMARY OF THE INVENTION

In order to solve the above problems, the purpose of the present invention is to provide a kiwifruit modified atmosphere fresh-keeping box. The device cooperates with a fixed bushing through a plurality of placing platforms, and can accelerate the flow of gas in the container with the rotation of the container, thereby avoiding The carbon dioxide and ethylene gas produced in the process of respiration adhere to the surface of the fruit body, flow with the gas rotation, and are discharged from the container, which can achieve better preservation while delaying the respiration of the fruit body.

In order to achieve the above objects, the technical solutions of the present invention are as follows.

A modified atmosphere fresh-keeping box for kiwi fruit, comprising:

A box body, in which a container with a top opening is rotatably arranged;

a driving part, arranged on the lower side of the container, for driving the container to rotate;

a fixed shaft sleeve, one end of which is fixedly connected with the container, and the other end is rotatably connected with a fixing ring, and the fixing ring is fixedly connected with the inner wall of the box body;

A plurality of placing tables are evenly arranged in the circumferential direction of the fixed shaft sleeve from bottom to top, and are used for placing fruit bodies;

Wherein, the top of the box body is connected with an air intake pipe, and the air intake pipe is communicated with the cavity in the fixed shaft sleeve through a fixing ring; the fixed shaft sleeve is provided with a plurality of air inlet holes, a plurality of the The air intake holes are respectively arranged on the upper side of the corresponding placing table; the bottom of the container is provided with a plurality of exhaust holes, the bottom of the box is provided with an exhaust channel, and the plurality of exhaust holes are all connected with the exhaust holes. The air passage communicates with each other; an air discharge mechanism is rotatably arranged on one end of the air discharge passage.

Further, the inner wall of one end of the air inlet pipe (11) close to the fixing ring is coated with an antibacterial coating; the outer wall of the fixing ring is provided with a far-infrared coating.

Further, the bottom of each said placing table is coated with a fresh-keeping coating; it is used to adsorb ethylene gas; the fresh-keeping coating is composed of hollow porous polymer microspheres loaded with ethylene adsorbent, and the ethylene adsorption The agent is loaded in the hollow porous polymer microspheres; wherein, the ethylene adsorbent is Ag ⁺ adsorbent with porous activated carbon as the carrier; the hollow porous polymer microspheres are made of gel polystyrene resin. formed spherical shell.

Further, each of the placement platforms includes:

a rotating ring, which is rotatably arranged on the fixed shaft sleeve;

2 placement slots, symmetrically arranged on both sides of the rotating ring;

The fixed shaft sleeve is provided with a plurality of limit holes, and each of the rotating rings is provided with a limit snap part; one end of each limit snap part can be movably inserted into the corresponding limiter. on the bit hole.

Further, the position-limiting snap-on component includes:

The limit snap ring is arranged on the side of the rotating ring facing the corresponding placement groove; two U-shaped snap grooves are symmetrically arranged on one end of the limit snap ring;

a return spring, which is arranged in the limit snap ring, and one end is fixedly connected with the inner wall of the limit snap ring;

The movable column is movably arranged in the limit snap ring; two clamping columns are symmetrically arranged on one end of the movable column, and each of the clamping columns can be slidably arranged in the corresponding U-shaped slot. ; The other end of the return spring is in contact with two of the clamping posts respectively;

The movable nut is arranged on the limit snap ring and is threadedly connected with one end of the limit snap ring; one side of the movable nut is respectively abutted with the two snap posts;

As the movable nut moves toward the rotating ring, the other end of the movable column is gradually inserted into the corresponding limiting hole.

Further, two adjacent said rotating rings are inserted and matched; wherein, the upper side of each said rotating ring is provided with a plurality of slots, and the lower side of each said rotating ring is provided with a plurality of insert blocks, Each of the insert blocks is inserted and matched with the corresponding slot.

Further, a limiting ring is arranged in the box, and a rotating member is connected to the limiting ring through a bearing, and the rotating member is fixedly connected with the outer wall of the container; the driving member is a motor, and the output shaft of the motor is It is connected with one end of the fixed bushing extending out of the container through a transmission belt.

Further, the exhaust mechanism includes:

a rotating shaft, rotatably arranged on one end of the exhaust passage, and arranged vertically;

4 blades, one end of which is fixedly connected to the rotating shaft, and two adjacent blades are fixed vertically; one side of each blade is provided with an arc-shaped inclined surface, and each blade is close to the The widths of the arc-shaped inclined surfaces gradually decrease from bottom to top.

Further, an adjustment mechanism is provided on one side of the box body, and the adjustment mechanism includes:

an adjustment box, which is provided with interconnected heat exchange coils, and one end of the air intake pipe is connected to the air outlet of the adjustment box;

The refrigerator is arranged on one side of the regulating box; the liquid inlet end is connected with the liquid outlet of the heat exchange coil, and the liquid outlet end is connected with the liquid inlet of the heat exchange coil;

a fan, arranged on one side of the adjustment box, and the air outlet of the fan is connected with the air inlet of the adjustment box;

Several filter layers are arranged in the regulating box in turn along the gas flow direction, each of the filter layers is provided with filter holes on both sides, and each of the filter layers is filled with activated carbon particles and oxygen adsorption particles, and the activated carbon The mass ratio of particles to oxygen adsorption particles is 10:1-3.

Beneficial effects of the present invention:

1. The device of the present invention arranges a plurality of placing platforms for placing the fruit body in the circumferential direction of the fixed shaft sleeve from bottom to top, which can increase the head space of the fruit body and promote the discharge of gas generated during the fruit body breathing. With the rotation of the container, the surface of the fixed shaft sleeve will release protective gas, which can form a fresh-keeping layer on the fruit body while promoting the gas flow during the respiration of the fruit body, isolate the contact between the ethylene gas and the fruit body, and better delay the kiwi fruit. of respiration. The device cooperates with a fixed shaft sleeve through a plurality of placing platforms. With the rotation of the container, it can accelerate the flow of gas in the container, so as to avoid the carbon dioxide and ethylene gas generated during the breathing process from adhering to the surface of the fruit body. Rotate to flow, and discharge the container to achieve better fresh-keeping effect while delaying the respiration of the fruit body.

2. The device of the present invention can also generate infrared rays on the top of the box. The infrared vibration effect mainly acts on the cell wall of the fruit body, which increases the plasticity of the cell wall and enhances the elasticity of the cell wall, which can finally enhance the anti-mechanical ability of the fruit body. , to avoid minor trauma during transportation. In addition, infrared rays can also promote the dissolution of ethylene on the surface of the kiwifruit fruit body, so that the amount of ethylene released by the kiwifruit fruit body is reduced, thereby delaying the ripening rate of the fruit and achieving the purpose of preservation.

3. The device of the present invention also has a fresh-keeping coating for adsorbing ethylene gas on the bottom surface of the placing table, so that the ethylene gas in the box is adsorbed to reduce the ethylene concentration, avoid the contact between the ethylene gas and the kiwi fruit body, and further delay the kiwi fruit. The respiration of the fruit body achieves the purpose of preservation.

4. The device of the present invention also has an exhaust mechanism in the exhaust passage, and the exhaust mechanism rotates itself or cooperates with the flow of the gas to make it rotate, thereby driving the gas out of the box. The overall device is simple in structure and convenient to use, is helpful for the storage and transportation of kiwifruit, and is suitable for popularization and application.

Description of drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention.

FIG. 2 is a schematic structural diagram of the placing table in FIG. 1 .

FIG. 3 is a schematic structural diagram of part A in FIG. 2 .

FIG. 4 is a schematic structural diagram of the rotating ring in FIG. 2 .

FIG. 5 is a schematic structural diagram of the fixing ring in FIG. 1 .

FIG. 6 is a schematic structural diagram of the exhaust mechanism in FIG. 1 .

FIG. 7 is a schematic structural diagram of the filter layer in FIG. 1 .

In the figure: 1. Box body; 11. Intake pipe; 12. Exhaust passage; 13. Limit ring; 14. Rotating part; 2. Container; 21. Exhaust hole; 3. Driving part; 4. Fixed bushing ;41, air inlet; 42, limit hole; 5, fixing ring; 51, antibacterial coating; 52, far infrared coating; 6, placing table; 61, rotating ring; 611, slot; 612, insert block; 62, placement slot; 63, fresh-keeping coating; 64, limit snap connection part; 641, limit snap ring; 642, U-shaped snap slot; 643, return spring; 644, movable column; 645, clip column; 646, movable nut; 7, exhaust mechanism; 71, rotating shaft; 72, blade; 721, arc inclined surface; 8, adjustment mechanism; 81, adjustment box; 82, heat exchange coil; 83, refrigerator; 84 , fan; 85, filter layer; 851, filter hole.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIG. 1 , which is a schematic structural diagram of a modified atmosphere fresh-keeping box for kiwifruit according to an embodiment of the present invention. The device includes: a box body 1 , a container 2 arranged in the box body, a driving part 3 , a fixed shaft sleeve 4 , a fixed ring 5 and a placing table 6 .

A container 2 with a top opening is rotatably arranged in the box body 1; specifically, a limit ring 13 is arranged in the box body 1, and a rotating member 14 is connected to the limit ring 13 through a bearing, and the rotating member 14 is fixed to the outer wall of the container 2. connect.

The driving part 3 is arranged on the lower side of the container 2 and is used to drive the container 2 to rotate; For example, a driving gear is connected to the output shaft of the motor, a driven gear is connected to the end of the fixed shaft sleeve extending out of the container 2, the transmission belt is a transmission tooth chain, and the transmission gears are respectively connected to the driving gear and the driven gear, and are respectively connected with The driving gear and the driven gear mesh. Thus, the container 2 can be driven to rotate by the rotation of the motor output shaft.

One end of the fixing shaft sleeve 4 is fixedly connected with the container 2 , and the other end is rotatably connected with a fixing ring 5 , and the fixing ring 5 is fixedly connected with the inner wall of the box body 1 . The arrangement of the fixed shaft sleeve can drive the container 2 to rotate on the one hand, and can cooperate with the limit ring and the rotating member on the other hand to ensure the stability of the container 2 .

A plurality of placing tables 6 are evenly arranged in the circumferential direction of the fixed bushing 4 from bottom to top for placing the fruit body; Circumferentially up. For example, the number of placing tables is 4, and the included angle between the central axes of two adjacent placing tables is 45°.

The top of the box body 1 is connected with an air intake pipe 11, and the air intake pipe 11 communicates with the cavity in the fixed shaft sleeve 4 through the fixing ring 5; 41 are respectively arranged on the upper side of the corresponding placing table 6; the bottom of the container 2 is provided with a plurality of exhaust holes 21, the bottom of the box 1 is provided with an exhaust channel 12, and the plurality of exhaust holes 21 are all communicated with the exhaust channel 12 ; One end of the outlet of the exhaust passage 12 is rotatably provided with an exhaust mechanism 7.

In this embodiment, the device arranges a plurality of placement platforms for placing the fruit body in the circumferential direction of the fixed shaft sleeve from bottom to top, which can increase the head space of the fruit body and promote the discharge of gas generated during the fruit body breathing. With the rotation of the container, the surface of the fixed shaft sleeve will release protective gas, which can form a fresh-keeping layer on the fruit body while promoting the gas flow during the respiration of the fruit body, isolate the contact between the ethylene gas and the fruit body, and better delay the kiwi fruit. of respiration. The device cooperates with a fixed shaft sleeve through a plurality of placing platforms. With the rotation of the container, it can accelerate the flow of gas in the container, so as to avoid the carbon dioxide and ethylene gas generated during the breathing process from adhering to the surface of the fruit body. Rotate to flow, and discharge the container to achieve better fresh-keeping effect while delaying the respiration of the fruit body.

Referring to FIG. 5 , the inner wall of one end of the air intake pipe 11 close to the fixing ring 5 is coated with an antibacterial coating 51 ; the outer wall of the fixing ring 5 is provided with a far-infrared coating 52 .

In this embodiment, the setting of the antibacterial coating mainly plays a certain sterilization and antibacterial effect on the gas entering the box. For example, the silver ion antibacterial coating, in which the nano silver is oxidized to release a small amount of silver ions, the silver ions contact with the moisture in the gas, and will enter the box with the moisture, which will produce a certain antibacterial effect on the gas in the box. and antibacterial effect. Its antibacterial mechanism is mainly that a small amount of free silver ions will enter the bacteria and inhibit the growth of bacteria, thus showing good antibacterial activity. Of course, graphene antibacterial coating can also be used. Its antibacterial mechanism is mainly to insert the nano two-dimensional sheet structure of graphene into the bacterial cell membrane and cut the bacterial cell membrane. It can also be extracted by a large number of phospholipid molecules on the cell membrane. To destroy the bacterial cell membrane, it has a good bactericidal and bacteriostatic effect, and mainly uses physical sterilization, which is relatively safe.

The device can also generate infrared rays on the top of the box body, and the infrared rays generated by the far-infrared coating release the infrared rays to generate infrared vibration effects. And acting on the fruit body cell wall, the plasticity of the cell wall is increased, and the elasticity of the cell wall is enhanced, which can finally enhance the anti-mechanical ability of the fruit body and avoid slight trauma during transportation. In addition, infrared rays can also promote the dissolution of ethylene on the surface of the kiwifruit fruit body, so that the amount of ethylene released by the kiwifruit fruit body is reduced, thereby delaying the ripening rate of the fruit and achieving the purpose of preservation. Of course, since the generation of infrared rays will raise the temperature in the box to a certain extent, the temperature in the box can be adjusted by adjusting the temperature of the gas entering the box, so that the temperature in the box can be maintained within the effective temperature range and kept stable .

Please refer to FIG. 1, the bottom of each placing table 6 is coated with a fresh-keeping coating 63; it is used to adsorb ethylene gas; the fresh-keeping coating 63 is composed of hollow porous polymer microspheres loaded with ethylene adsorbent, and the ethylene adsorption The agent is loaded in hollow porous polymer microspheres; among them, the ethylene adsorbent is Ag ⁺ adsorbent with porous activated carbon as the carrier; the hollow porous polymer microspheres are spherical shells formed by cross-linking of gel polystyrene resin . In this embodiment, the device also has a fresh-keeping coating for adsorbing ethylene gas on the bottom surface of the placing table, so that the ethylene gas in the box is adsorbed to reduce the ethylene concentration, avoid the contact between the ethylene gas and the kiwi fruit body, and further delay the The respiration of kiwi fruit body achieves the purpose of preservation. Since the fruit in the placing table will release ethylene gas, with the rotation of the fixed bushing 4, the ethylene gas released by the fruit body is in a flowing state and cannot be attached to the surface of the fruit body, and due to the safety of the bottom of the placing table for ethylene gas adsorption The coating can adsorb the ethylene gas free in the box, so as to prevent the concentration of ethylene gas in the box from being too high and affecting the fresh-keeping effect of the fruit body.

Referring to FIG. 2 , each placing table 6 includes: a rotating ring 61 and two placing grooves 62 .

The rotating ring 61 is rotatably disposed on the fixed sleeve 4; for example, an annular inner groove is provided on the outer wall of the fixed sleeve, and the rotating ring 61 is clamped on the annular inner groove and can rotate along the annular inner groove. Of course, the rotating ring can also be directly sleeved on the fixed shaft sleeve, and a connecting piece is arranged between two adjacent rotating rings to separate two adjacent placing tables and maintain a certain distance.

The two placement slots 62 are symmetrically arranged on both sides of the rotating ring 61 and are fixedly connected to the rotating ring. Here, the shape of the placement slot is fan-shaped, and the arrangement of the fan-shaped placement slot can increase the flow space of gas in the box on the one hand, and facilitate the rotation of the placement table on the other hand.

The fixed shaft sleeve 4 is provided with a plurality of limit holes 42, and each rotating ring 61 is provided with a limit snap part 64; one end of each limit snap part 64 can be movably inserted in the corresponding limit On the hole 42, it is helpful for the fixed installation of the placing table.

Referring to FIG. 3 , the limit snap-fitting part 64 includes a limit snap ring 641 , a return spring 643 , a movable column 644 and a movable nut 646 .

The limit snap ring 641 is disposed on the side of the rotating ring 61 facing the corresponding placement groove 62; one end of the limit snap ring 641 is symmetrically provided with two U-shaped snap grooves 642.

Two clamping columns 645 are symmetrically arranged on one end of the movable column 644, and each clamping column 645 can be slidably arranged in the corresponding U-shaped clamping slot 642; the other end of the movable column 644 can be movably arranged on the limit retaining ring within 641.

The return spring 643 is disposed in the limit snap ring 641 and is sleeved on one end of the movable column located in the limit snap ring. One end of the return spring 643 is fixedly connected to the inner wall of the limit snap ring 641, and the other end of the return spring 643 is in contact with the two snap posts 645 respectively. The return spring mainly plays the role of buffering and pressing.

The movable nut 646 is disposed on the limit snap ring 641 and is threadedly connected with one end of the limit snap ring 641 ; one side of the movable nut 646 is respectively abutted with the two snap posts 645 ; with the movable nut 646 moving toward the rotating ring 61 , the other end of the movable column 644 is gradually inserted into the corresponding limiting hole 42 .

When in use, the movable nut is moved along the limit snap ring by rotating the movable nut. Since the two clamping posts move along the corresponding U-shaped slot, the movement path of the clamping post is limited, and the movable nut abuts on the clamping post. It presses the clamping column, and pushes the movable column to move, so that the end of the movable column is gradually inserted into the corresponding limit hole, so that the placing table 6 can be fixedly installed, so that the placing table can be fixed with The rotation of the shaft sleeve 4 rotates.

Referring to FIG. 4 , in another embodiment of the present invention, two adjacent rotating rings 61 are inserted and matched; wherein, a plurality of slots 611 are provided on the upper side of each rotating ring 61 , and each rotating ring 61 is provided with a plurality of slots 611 . A plurality of inserting blocks 612 are arranged on the lower side of the socket, and each inserting block 612 is inserted and matched with the corresponding slot 611 . The cooperation between the insert block and the slot is mainly to facilitate the installation of the rotating ring, so that the two adjacent rotating rings can be installed stably.

Please refer to Fig. 1 and Fig. 6. The device also has an exhaust mechanism in the exhaust passage. The exhaust mechanism can drive the exhaust mechanism to realize its own rotation through the driving component, and can also rotate with the flow of the gas, thereby driving the gas out of the box. Among them, the exhaust mechanism 7 includes: a rotating shaft 71 and four blades 72 .

The rotating shaft 71 is rotatably arranged on one end of the outlet of the exhaust passage 12 and is arranged vertically.

One end of the four blades 72 is fixedly connected with the rotating shaft 71, and the adjacent two blades 72 are fixed vertically; one side of each blade 72 is provided with an arc-shaped inclined surface 721, and each blade is close to the arc-shaped inclined surface 721. The width gradually decreases from bottom to top. Due to the structure of four blades, the exhaust mechanism can be rotated by the flow of the gas, so that the gas is automatically discharged, and the backflow of the gas can be avoided. Of course, a drive motor can also be connected to the end of the rotating shaft, and the output shaft of the drive motor can rotate to drive the rotating shaft to rotate, and cooperate with the flow of gas to make it rotate, thereby driving the gas out of the box.

Please refer to FIG. 1 and FIG. 7 , one side of the box body 1 is provided with an adjustment mechanism 8 , and the adjustment mechanism 8 includes an adjustment box 81 , a refrigerator 83 and a fan 84 .

The regulating box 81 is provided with interconnected heat exchange coils 82, and one end of the intake pipe 11 is connected to the air outlet of the regulating box 81; here, the heat exchange coils mainly include an upper coil and a lower coil, and the upper coil There are a plurality of communication pipes connected with the lower coil. Of course, the upper coil is communicated with a plurality of communication pipes, and the lower coil is also communicated with a plurality of communication pipes. Interleaved coil assemblies can thus be formed.

The refrigerator 83 is arranged on one side of the adjustment box 81; its liquid inlet end is connected to the liquid outlet of the heat exchange coil 82, and its liquid outlet end is connected to the liquid inlet of the heat exchange coil 82; The liquid flowing in the heat coil produces refrigeration to regulate the temperature of the gas entering the box.

The fan 84 is arranged on one side of the adjustment box 81, and the air outlet of the fan 84 is connected with the air inlet of the adjustment box 81; the air enters the adjustment box through the fan, and the flow rate of the gas flowing from the adjustment box to the box can be increased.

A number of filter layers 85 are arranged in the regulating box 81 in sequence along the gas flow direction, each filter layer 85 is provided with filter holes 851 on both sides, and each filter layer 85 is filled with activated carbon particles and oxygen adsorption particles, and the activated carbon particles are And the mass ratio of oxygen adsorption particles is 10:1~3. Part of the oxygen in the gas entering the adjustment box is adsorbed through the filter layer to adjust the oxygen content in the gas, so that the gas entering the box maintains a low-oxygen and high-nitrogen environment. Reduced respiration helps keep fresh. Activated carbon particles can not only filter out dust particles in the air, but also absorb harmful gases in the air.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. Inside.

Claims (5)

1. The utility model provides a kiwi fruit air conditioning preservation case which characterized in that includes:

a box body (1) in which a container (2) with an opening at the top is rotatably arranged;

the driving component (3) is arranged at the lower side of the container (2) and is used for driving the container (2) to rotate;

one end of the fixed shaft sleeve (4) is fixedly connected with the container (2), the other end of the fixed shaft sleeve is rotatably connected with a fixed ring (5), and the fixed ring (5) is fixedly connected with the inner wall of the box body (1);

the placing tables (6) are uniformly distributed on the circumference of the fixed shaft sleeve (4) from bottom to top and are used for placing fruit bodies;

the top of the box body (1) is connected with an air inlet pipe (11), and the air inlet pipe (11) is communicated with a cavity in the fixed shaft sleeve (4) through a fixed ring (5); a plurality of air inlets (41) are formed in the fixed shaft sleeve (4), and the air inlets (41) are respectively arranged on the upper sides of the corresponding placing platforms (6); the bottom of the container (2) is provided with a plurality of exhaust holes (21), the bottom of the box body (1) is provided with an exhaust channel (12), and the exhaust holes (21) are communicated with the exhaust channel (12); one end of the exhaust channel (12) is rotatably provided with an exhaust mechanism (7);

the bottom of each placing platform (6) is coated with a fresh-keeping coating (63) for adsorbing ethylene gas; the fresh-keeping coating (63) consists of hollow porous polymer microspheres loaded with an ethylene adsorbent, and the ethylene adsorbent is loaded in the hollow porous polymer microspheres; wherein the ethylene adsorbent is Ag taking porous activated carbon as a carrier ⁺ An adsorbent; the hollow porous polymer microspheres are spherical shells formed by crosslinking gel type polystyrene resin;

each of said standing tables (6) comprising:

the rotating ring (61) is rotatably arranged on the fixed shaft sleeve (4);

2 placing grooves (62) symmetrically arranged at two sides of the rotating ring (61);

a plurality of limiting holes (42) are formed in the fixed shaft sleeve (4), and a limiting clamping component (64) is arranged on each rotating ring (61); one end of each limiting clamping part (64) is movably inserted in the corresponding limiting hole (42);

a limiting ring (13) is arranged in the box body (1), a rotating piece (14) is connected to the limiting ring (13) through a bearing, and the rotating piece (14) is fixedly connected with the outer wall of the container (2); the driving part (3) is a motor, and an output shaft of the motor is connected with one end, extending out of the container (2), of the fixed shaft sleeve (4) through a transmission belt;

one side of box (1) is provided with adjustment mechanism (8), adjustment mechanism (8) include:

the air conditioner comprises an adjusting box (81), wherein heat exchange coil pipes (82) which are communicated with each other are arranged in the adjusting box, and one end of an air inlet pipe (11) is connected with an air outlet of the adjusting box (81);

a refrigerator (83) provided on one side of the adjustment box (81); the liquid inlet end of the heat exchanger is connected with the liquid outlet of the heat exchange coil (82), and the liquid outlet end of the heat exchanger is connected with the liquid inlet of the heat exchange coil (82);

the fan (84) is arranged on one side of the adjusting box (81), and an air outlet of the fan (84) is connected with an air inlet of the adjusting box (81);

a plurality of filter layers (85) are sequentially arranged in the adjusting box (81) along the gas flowing direction, each filter layer (85) is provided with filtering holes (851) on two sides, each filter layer (85) is filled with activated carbon particles and oxygen adsorption particles, and the mass ratio of the activated carbon particles to the oxygen adsorption particles is 10:1 to 3.

2. The kiwi air-conditioning fresh-keeping box according to claim 1, characterized in that an inner wall of one end of the air inlet pipe (11) close to the fixing ring (5) is coated with a bacteriostatic coating (51); the outer wall of the fixing ring (5) is provided with a far infrared coating (52).

3. The air-conditioned kiwifruit fresh-keeping box of claim 1, wherein the limit clip member (64) comprises:

a limit snap ring (641) which is arranged on one side of the rotating ring (61) facing the corresponding placing groove (62); one end of the limiting snap ring (641) is symmetrically provided with 2U-shaped clamping grooves (642);

the return spring (643) is arranged in the limiting snap ring (641), and one end of the return spring is fixedly connected with the inner wall of the limiting snap ring (641);

the movable column (644) is movably arranged in the limiting snap ring (641); one end of each movable column (644) is symmetrically provided with 2 clamping columns (645), and each clamping column (645) can be slidably arranged in the corresponding U-shaped clamping groove (642); the other end of the return spring (643) is respectively abutted with the 2 clamping columns (645);

the movable nut (646) is arranged on the limiting snap ring (641) and is in threaded connection with one end of the limiting snap ring (641); one side of the movable nut (646) is respectively abutted against 2 clamping columns (645);

as the movable nut (646) moves towards the rotating ring (61), the other end of the movable column (644) is gradually inserted into the corresponding limiting hole (42).

4. The air-conditioned kiwi fruit fresh-keeping box of claim 1, wherein 2 adjacent rotating rings (61) are in plug fit; the upper side of each rotating ring (61) is provided with a plurality of slots (611), the lower side of each rotating ring (61) is provided with a plurality of inserting blocks (612), and each inserting block (612) is in inserting fit with the corresponding slot (611).

5. Kiwi fruit air-conditioned fresh-keeping box according to claim 1, characterized in that the exhaust mechanism (7) comprises:

a rotating shaft (71) rotatably provided on one end of the exhaust passage (12); and is arranged vertically;

4 blades (72), one ends of which are fixedly connected with the rotating shaft (71), and 2 adjacent blades (72) are vertically fixed; one side of each blade (72) is provided with an arc inclined surface (721), and the width of each blade (72) close to the arc inclined surface (721) is gradually reduced from bottom to top.

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