Plant disease and insect pest leaf quarantine specimen sampling box

Abstract

The invention discloses a plant disease and insect pest leaf quarantine specimen sampling box, and belongs to the technical field of quarantine specimen sampling boxs.The plant disease and insect pest leaf quarantine specimen sampling box comprises a storage box used for carrying and transporting leaves, and a partition plate is fixedly installed in the center of the storage box; a center column is rotatably installed in the middle of the partition plate in a penetrating mode, movable supporting plates are installed at the upper end and the lower end of the center column in an elastic lifting mode correspondingly, elastic clamping pieces are evenly and fixedly installed on the upper surfaces of the movable supporting plates, and meanwhile splicing box pieces used for protecting blades are clamped and positioned on the elastic clamping pieces. Containing barrels are rotationally installed at the upper end and the lower end of the center column correspondingly, the opening ends of the containing barrels are in threaded connection with fixing covers, and the inner sides of the upper containing barrel and the lower containing barrel are filled with moisture absorbents and water storage cotton blocks correspondingly. The plant disease and insect pest leaf quarantine specimen sampling box can effectively buffer and protect leaf specimens, can automatically regulate and control the environment in the transportation process, and effectively ensures the subsequent detection precision.

Description

Technical Field

[0001] The invention relates to the technical field of quarantine specimen sampling boxes, in particular to a quarantine specimen sampling box for plant disease and insect pest leaves. Background Art

[0002] In the field of plant quarantine, the collection and preservation of leaf specimens is a key link in the detection, identification and traceability of pests and diseases, and is directly related to the accuracy and reliability of quarantine results. Therefore, specimen sampling boxes are needed to preserve and transport leaves.

[0003] The prior art (Announcement No.: CN212891585U, Chinese patent publication date: 2021-04-06) discloses a plant disease and insect pest leaf quarantine specimen sampling box. In response to the problem that when sampling, there will be a lot of dew on the leaves of the existing quarantine specimen sampling box, which will cause the leaves to become wet when placed in the sampling box, the following solution is proposed, which includes a sampling box body, a first partition is fixedly installed in the sampling box body, a second partition is fixedly installed on the top of the first partition, a sliding frame is provided in the second partition, a first long hole is opened on both sides of the sliding frame, a first box cover and a second box cover are slidably connected in the sliding frame, the bottoms of the first box cover and the second box cover are fixedly connected to the first rack and the second rack respectively, the bottom of the sliding frame is rotatably connected to the first rotating rod, and one end of the first rotating rod is fixedly connected to the gear; The prior art (Announcement No.: CN213769440U, Chinese patent publication date: 2021-07-23) discloses a plant disease and insect pest leaf quarantine specimen sampling box assembly, including a box body, an adjusting chamber is opened inside the box body, a dual-axis motor is fixedly connected to the interior of the adjusting chamber, and the output shaft of the dual-axis motor is fixedly connected to the first rotating shaft; by setting the dual-axis motor, when the staff uses the device to store the specimen, the staff starts the dual-axis motor through the control switch, and under the cooperation of the first bevel gear and the second bevel gear, the threaded cap can drive the limiting slot to move through the movable plate, thereby achieving the purpose of moving the placement slot to the outside of the box body; by setting the placement slot and the sealing cover, when the staff uses the device to store the specimen, under the cooperation of the placement slot and the sealing cover, the specimen can be sealed and stored, thereby avoiding mutual infection and mutual influence between pathogens; Although the existing plant disease and insect pest leaf quarantine specimen sampling box can store leaves independently, it cannot effectively cushion and protect the leaves during use, and it is inconvenient to automatically control the storage environment of the leaves, making the leaves easily damaged during storage, thereby reducing the subsequent detection accuracy, and there are certain usage defects. Summary of the Invention

[0004] The purpose of the present invention is to provide a plant disease and insect pest leaf quarantine specimen sampling box to solve the problem raised in the above background technology that the plant disease and insect pest leaf quarantine specimen sampling box currently on the market cannot effectively buffer and protect the leaves when used, and it is inconvenient to automatically control the storage environment of the leaves, making the leaves easily damaged during the storage process.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a plant disease and insect pest leaf quarantine specimen sampling box, comprising a storage box for carrying and transporting leaves, the upper and lower ends of the storage box are respectively threadedly connected with a sealing cover, and a partition is fixedly installed at the center position of the storage box; a central column is rotatably installed through the middle of the partition, and the upper and lower ends of the central column are respectively elastically lifted and lowered with movable support plates, and the upper surface of the movable support plate is evenly fixedly installed with elastic clamps, and at the same time, an assembled box part for protecting leaves is clamped and positioned on the elastic clamps, the upper and lower ends of the central column are rotatably installed with a holding cylinder, and the open end of the holding cylinder is threadedly connected with a fixed cover, and the inner sides of the upper and lower holding cylinders are respectively filled with a desiccant and a water storage cotton block, and a transmission component for driving the holding cylinder to rotate is connected between the movable support plate and the holding cylinder, two cavities are provided on the inner side of the partition, and a pressure regulating component for regulating the air pressure inside the storage box is provided on the inner side of the cavity.

[0006] Preferably, the movable support plate is lifted and sleeved on the outside of the central column, and a buffer spring is fixedly connected between the central column and the movable support plate, and the buffer spring is sleeved on the outside of the central column.

[0007] Preferably, the assembled box comprises two protective boxes sealed together, and the two ends of the elastic clamp are clamped on the outside of the two protective boxes, and the middle support of the elastic clamp is fitted on the end of the protective box, and the two ends of the elastic clamp are arranged in an arc-shaped structure.

[0008] Preferably, a magnetic sheet is embedded and installed on the splicing end surface of the protective box, and the magnetic poles of the opposite surfaces of the magnetic sheets on the two protective boxes are opposite, and a sealing rubber ring is also embedded and installed on the splicing end surface of the protective box. At the same time, the two protective boxes are adsorbed and fitted together by the magnetic sheet, and the sealing rubber rings on the two protective boxes are sealed and fitted to each other, and at the same time, an elastic breathable membrane is fixedly connected to the through hole opened on the protective box.

[0009] Preferably, the assembled box parts are distributed at equal angles on the outside of the containing cylinder, and a guide groove running through the cylinder body is provided on the containing cylinder, and the desiccant located on the inner side of the upper containing cylinder absorbs water vapor in the space above the partition through the guide groove, while the water storage cotton block located on the inner side of the lower containing cylinder moisturizes the air in the space below the partition through the guide groove.

[0010] Preferably, the transmission assembly includes a fixed cylinder fixedly mounted on the outside of the movable support plate, and the fixed cylinder and the containing cylinder are coaxially arranged, and a rotating column is rotatably installed on the inner wall of the fixed cylinder, and the end of the rotating column is located on the inner side of the guide groove. The guide groove is arranged in a spiral structure, and when the movable support plate drives the fixed cylinder to elastically rise and fall, the rotating column slides along the guide groove to drive the containing cylinder to rotate.

[0011] Preferably, the diameter of the desiccant and the water storage cotton block inside the containing cylinder is larger than the width of the guide groove, and a stirring rod is fixedly installed below the fixed cover above, and the stirring rod stirs the desiccant when the containing cylinder above rotates, and at the same time accelerates the volatilization of water in the water storage cotton block when the containing cylinder below rotates.

[0012] Preferably, the center position of the central column is a spherical structure, and the middle of the central column is connected to the partition ball, and the outer diameter of the movable support plate is smaller than the inner diameter of the storage box. At the same time, the partition and the central column are both rotated and adjusted during the shaking of the storage box.

[0013] Preferably, the pressure regulating assembly includes a piston plate that is interference-slidably installed in the internal cavity of the partition, and a return spring is fixedly connected between the piston plate and the inner wall of the cavity, and a traction rope is fixedly connected between the piston plate and the center column. At the same time, during the rotation of the center column, the piston plate is pulled by the traction rope to elastically slide in the cavity. An air pipe is also fixedly installed on the partition, and the air pipe connects the internal space of the storage box and the cavity structure.

[0014] Compared with the existing technology, the present invention has the following advantages: the plant disease and insect pest leaf quarantine specimen sampling box can effectively buffer and protect the leaf specimens, and can automatically control the maintenance environment during transportation, effectively ensuring the subsequent detection accuracy. The specific contents are as follows; 1. A protective box is provided. The protective box is connected by magnetic attraction to each other, which can effectively protect the leaves. The sealing rubber ring and elastic breathable membrane can effectively prevent the leakage of pathogens, insects, etc. on the leaves, and avoid mutual contamination between specimens, ensuring the accuracy of subsequent detection. The elastic clamp can clamp and limit the protective box, and at the same time further ensure the splicing stability of the protective box. 2. A central column and a movable support plate are provided. As the storage box shakes, the partition and the central column will rotate relative to each other. At the same time, the movable support plate will perform elastic buffering on the central column, thereby effectively reducing the vibration of the protective box and preventing the blades inside the protective box from vibrating and being damaged. 3, It is provided with containing cylinder, through the hygroscopic agent in the upper containing cylinder inside, the water vapor in the upper space of the storage box can be absorbed, so as to ensure the dryness of the upper space of the storage box, and the water storage cotton block inside the containing cylinder in the lower part can be moisturized by the evaporation of water, thereby automatically adjusting the storage environment inside the storage box, effectively ensuring the holding effect of the blade; 4, It is provided with piston sheet, traction rope and air pipe, with the rotation of the center column, the center column will pull the piston sheet to perform interference sliding in the cavity of the partition plate through the traction rope, at this time, the cavity inside the partition plate will adjust the air pressure of the space inside the storage box through the air pipe, when the air pressure inside the storage box rises, the elastic breathable film will elastically deform and clamp and position the blade, and with the reciprocating adjustment of the air pressure outside the elastic breathable film, the circulation and adjustment of the air inside the protection box and the air inside the storage box can be promoted, thereby further promoting the adjustment of the blade storage environment. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the front view structure schematic diagram of the application; Figure 2 It is the split structure schematic diagram of the storage box and the sealing cover of the application; Figure 3 It is the split structure schematic diagram of the storage box and the sealing cover of the application; Figure 4 It is the split structure schematic diagram of the storage box and the sealing cover of the application; Figure 5 It is the split structure schematic diagram of the storage box and the sealing cover of the application; Figure 6 It is the split structure schematic diagram of the storage box and the sealing cover of the application; Figure 7 It is the split structure schematic diagram of the storage box and the sealing cover of the application; Figure 8 It is the split structure schematic diagram of the storage box and the sealing cover of the application; Figure 9 It is the split structure schematic diagram of the storage box and the sealing cover of the application; Figure 10 It is the split structure schematic diagram of the storage box and the sealing cover of the application; Figure 11 It is the split structure schematic diagram of the storage box and the sealing cover of the application.

[0016] In the drawing: 1, storage box; 2, sealing cover; 3, partition plate; 4, center column; 5, movable supporting plate; 6, elastic clamping piece; 7, protection box; 8, magnetic suction sheet; 9, sealing rubber ring; 10, elastic breathable film; 11, buffer spring; 12, containing cylinder; 1201, guide groove; 13, fixed cover; 14, fixed cylinder; 15, rotating column; 16, stirring rod; 17, piston sheet; 18, reset spring; 19, traction rope; 20, air pipe. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Example 1: The existing plant pest and disease leaf quarantine specimen sampling box is not convenient for effectively protecting the leaves during use, making the leaves prone to vibration and damage during transportation. In order to solve this technical problem, this embodiment discloses the following technical content, please refer to Figures 1-8 and Figure 11 As shown; a plant disease and insect pest leaf quarantine specimen sampling box, including a storage box 1 for carrying and transporting leaves, the upper and lower ends of the storage box 1 are respectively threadedly connected with a sealing cover 2, and a partition 3 is fixedly installed at the center position of the storage box 1, and a central column 4 is rotatably installed through the middle of the partition 3, and the upper and lower ends of the central column 4 are respectively elastically lifted and lowered with movable support plates 5, and the upper surface of the movable support plate 5 is evenly fixedly installed, and at the same time, the elastic clamp 6 clamps and positions an assembled box part for protecting leaves.

[0019] The movable support plate 5 is lifted and sleeved on the outer side of the central column 4, and a buffer spring 11 is fixedly connected between the central column 4 and the movable support plate 5, and the buffer spring 11 is sleeved on the outer side of the central column 4. The assembled box includes two protective boxes 7 that are sealed and fitted with each other, and the two ends of the elastic clamp 6 are fitted and clamped on the outer sides of the two protective boxes 7, and the middle support of the elastic clamp 6 is fitted to the end of the protective box 7. At the same time, the two ends of the elastic clamp 6 are arranged in an arc-shaped structure, and the splicing end faces of the protective boxes 7 are embedded with magnetic sheets 8, and the magnetic poles of the opposite surfaces of the magnetic sheets 8 on the two protective boxes 7 are opposite, and the splicing end faces of the protective boxes 7 are also embedded with sealing rubber rings 9. At the same time, the two protective boxes 7 are adsorbed and fitted through the magnetic sheets 8, and the sealing rubber rings 9 on the two protective boxes 7 are sealed and fitted with each other. At the same time, an elastic breathable membrane 10 is fixedly connected to the through hole opened on the protective box 7.

[0020] Place the collected leaf specimens inside the protective box 7, and then splice the two protective boxes 7. The two protective boxes 7 will be adsorbed and fitted together under the magnetic force of the magnetic sheet 8, and sealed by the sealing rubber rings 9 on both. Then, according to the preservation needs of the leaves, the protective boxes 7 containing different leaves are clamped on the elastic clamps 6 at different upper and lower positions in the storage box 1, and then the sealing cover 2 is closed. As the storage box 1 shakes during transportation, the partition 3 and the center column 4 will be elastically rotated and adjusted, thereby reducing the shaking amplitude of the movable support plate 5. At the same time, the movable support plate 5 can be elastically raised and lowered on the center column 4, thereby further playing a buffering role, effectively avoiding shaking and damage of the leaves in the protective box 7.

[0021] Example 2: The technical content disclosed in this embodiment is a further improvement based on the above-mentioned Example 1. The existing plant disease and insect pest leaf quarantine specimen sampling box cannot automatically adjust the maintenance environment during use, resulting in poor leaf preservation effect, thereby affecting the subsequent detection effect. In order to further solve this technical problem, this embodiment discloses the following technical content, such as Figure 3-Figure 4 and Figures 9-11 As shown; the upper and lower ends of the central column 4 are rotatably mounted with a holding cylinder 12, and the open end of the holding cylinder 12 is threadedly connected to a fixed cover 13, and the inner sides of the upper and lower holding cylinders 12 are respectively filled with a desiccant and a water storage cotton block, and at the same time, a transmission component for driving the holding cylinder 12 to rotate is connected between the movable support plate 5 and the holding cylinder 12, and two cavities are opened on the inner side of the partition 3, and a pressure regulating component for regulating the air pressure inside the storage box 1 is provided on the inner side of the cavity.

[0022] The assembled box parts are distributed at equal angles on the outside of the holding cylinder 12, and a guide groove 1201 is provided on the holding cylinder 12, and the desiccant inside the upper holding cylinder 12 absorbs the water vapor in the space above the partition 3 through the guide groove 1201, while the water storage cotton block inside the lower holding cylinder 12 moisturizes the air in the space below the partition 3 through the guide groove 1201. The transmission component includes a fixed cylinder 14 fixedly installed on the outside of the movable support plate 5, and the fixed cylinder 14 is fixedly installed on the outside of the movable support plate 5. The fixed cylinder 14 and the containing cylinder 12 are coaxially arranged, and a rotating column 15 is rotatably installed on the inner wall of the fixed cylinder 14. At the same time, the end of the rotating column 15 is located on the inner side of the guide groove 1201. The guide groove 1201 is arranged in a spiral structure. When the movable support plate 5 drives the fixed cylinder 14 to elastically rise and fall, the rotating column 15 slides along the guide groove 1201 to drive the containing cylinder 12 to rotate. The diameter of the desiccant and the water storage cotton block inside the containing cylinder 12 is larger than the width of the guide groove 1201. A stirring rod 16 is fixedly installed under the fixed cover 13 at the top, and the stirring rod 16 stirs the desiccant when the holding cylinder 12 at the top rotates. At the same time, the volatilization of water in the water storage cotton block is accelerated when the holding cylinder 12 at the bottom rotates. The center position of the central column 4 is a spherical structure, and the middle part of the central column 4 is spherically connected to the partition 3, and the outer diameter of the movable support plate 5 is smaller than the inner diameter of the storage box 1. At the same time, the partition 3 and the central column 4 rotate and adjust during the shaking of the storage box 1. The pressure regulating assembly includes a piston plate 17 that is interference-slidably installed in the internal cavity of the partition 3, and a return spring 18 is fixedly connected between the piston plate 17 and the inner wall of the cavity, and a traction rope 19 is fixedly connected between the piston plate 17 and the central column 4. At the same time, during the rotation of the central column 4, the piston plate 17 is pulled by the traction rope 19 to slide elastically in the cavity. An air pipe 20 is also fixedly installed on the partition 3, and the air pipe 20 connects the internal space of the storage box 1 and the cavity structure.

[0023] The holding tube 12 located at the top can absorb moisture and dry the gas in the space above the storage box 1 through the desiccant inside it, while the holding tube 12 located at the bottom can humidify the air through the water storage cotton block inside it, so that the storage box 1 has different storage environments. When the storage box 1 is shaken, the central column 4 will rotate, so that the central column 4 can pull the piston plate 17 in the cavity of the partition 3 through the traction rope 19 to perform elastic interference sliding, thereby adjusting the flow of gas inside the cavity and the storage box 1, thereby realizing automatic regulation of the air pressure in the internal space of the storage box 1. When the air pressure inside the storage box 1 increases, the elastic breathable membrane 10 will deform to a certain extent, thereby clamping the leaf. As the air pressure outside the elastic breathable membrane 10 changes, the circulation exchange between the air inside and outside the protective box 7 can be accelerated, thereby promoting the regulation of the environment inside the protective box 7, and further improving the preservation effect of the leaf specimens. Among them, the elastic breathable membrane 10 can adopt a polypropylene PP microfiltration membrane.

[0024] like Figure 9As shown, as the movable support plate 5 slides on the outside of the central column 4, the movable support plate 5 can drive the fixed cylinder 14 to rise and fall synchronously, so that the rotating column 15 on the inner wall of the fixed cylinder 14 slides along the spiral guide groove 1201, thereby driving the containing cylinder 12 to perform synchronous rotation adjustment. At this time, the upper containing cylinder 12 can cooperate with the stirring rod 16 to stir the desiccant, thereby promoting the moisture absorption effect, and the lower containing cylinder 12 can promote the volatilization of water in the water storage cotton block inside it through rotation, realize effective moisturizing of the air, and then achieve automatic regulation of maintaining the environment.

[0025] In the description of the present invention, unless otherwise specified, "plurality" means two or more; terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

Claims

1. A plant pest and disease leaf quarantine specimen sampling box, comprising a storage box (1) for carrying and transporting leaves, wherein the upper and lower ends of the storage box (1) are respectively threadedly connected to sealing covers (2), and a partition (3) is fixedly installed at the center of the storage box (1); It is characterized in that A central column (4) is rotatably mounted through the middle of the partition (3), and movable supporting plates (5) are elastically mounted on the upper and lower ends of the central column (4), and an elastic clamp (6) is evenly fixedly mounted on the upper surface of the movable supporting plate (5). At the same time, an assembly box for protecting the blades is clamped and positioned on the elastic clamp (6). A holding cylinder (12) is rotatably mounted on the upper and lower ends of the central column (4), and a fixed cover (13) is threadedly connected to the open end of the holding cylinder (12). The inner sides of the upper and lower holding cylinders (12) are respectively filled with a desiccant and a water storage cotton block. At the same time, a transmission component for driving the holding cylinder (12) to rotate is connected between the movable supporting plate (5) and the holding cylinder (12). Two cavities are opened on the inner side of the partition (3), and a pressure regulating component for regulating the air pressure inside the storage box (1) is provided on the inner side of the cavity.

2. The plant disease and insect pest leaf quarantine specimen sampling kit according to claim 1, characterized in that: The movable support plate (5) is lifted and sleeved on the outside of the central column (4), and a buffer spring (11) is fixedly connected between the central column (4) and the movable support plate (5), and the buffer spring (11) is sleeved on the outside of the central column (4).

3. The plant disease and insect pest leaf quarantine specimen sampling kit according to claim 1, characterized in that: The assembled box component comprises two protective boxes (7) that are sealed and fitted with each other, and the two ends of the elastic clamp (6) are fitted and clamped on the outsides of the two protective boxes (7), and the middle of the elastic clamp (6) is supported and fitted on the ends of the protective boxes (7), and the two ends of the elastic clamp (6) are arranged in an arc-shaped structure.

4. The plant disease and insect pest leaf quarantine specimen sampling kit according to claim 3, characterized in that: The splicing end faces of the protective boxes (7) are embedded with magnetic sheets (8), and the magnetic poles of the opposite surfaces of the magnetic sheets (8) on the two protective boxes (7) are opposite, and the splicing end faces of the protective boxes (7) are also embedded with sealing rubber rings (9), and the two protective boxes (7) are adsorbed and attached by the magnetic sheets (8), and the sealing rubber rings (9) on the two protective boxes (7) are sealed and attached to each other, and an elastic breathable membrane (10) is fixedly connected to the through hole opened on the protective box (7).

5. The plant disease and insect pest leaf quarantine specimen sampling kit according to claim 1, characterized in that: The assembled box parts are distributed at equal angles on the outside of the containing cylinder (12), and a guide groove (1201) is provided on the containing cylinder (12) and runs through the cylinder body. The moisture absorbent located on the inside of the upper containing cylinder (12) absorbs water vapor in the space above the partition (3) through the guide groove (1201), and the water storage cotton block located on the inside of the lower containing cylinder (12) moisturizes the air in the space below the partition (3) through the guide groove (1201).

6. The plant disease and insect pest leaf quarantine specimen sampling kit according to claim 1, characterized in that: The transmission assembly includes a fixed cylinder (14) fixedly mounted on the outside of the movable support plate (5), and the fixed cylinder (14) and the containing cylinder (12) are coaxially arranged, and a rotating column (15) is rotatably mounted on the inner wall of the fixed cylinder (14), and the end of the rotating column (15) is located on the inner side of the guide groove (1201), and the guide groove (1201) is arranged in a spiral structure. When the movable support plate (5) drives the fixed cylinder (14) to elastically rise and fall, the rotating column (15) slides along the guide groove (1201) to drive the containing cylinder (12) to rotate.

7. The plant disease and insect pest leaf quarantine specimen sampling kit according to claim 6, characterized in that: The diameter of the desiccant and the water storage cotton block inside the containing cylinder (12) is greater than the width of the guide groove (1201), and a stirring rod (16) is fixedly installed below the fixed cover (13) located above, and when the containing cylinder (12) located above rotates, the stirring rod (16) stirs the desiccant, and at the same time, when the containing cylinder (12) located below rotates, the volatilization of water in the water storage cotton block is accelerated.

8. The plant disease and insect pest leaf quarantine specimen sampling kit according to claim 1, characterized in that: The center position of the central column (4) is a spherical structure, and the middle of the central column (4) is spherically connected to the partition (3), and the outer diameter of the movable support plate (5) is smaller than the inner diameter of the storage box (1). At the same time, when the storage box (1) is shaken, both the partition (3) and the central column (4) are rotated and adjusted.

9. The plant disease and insect pest leaf quarantine specimen sampling kit according to claim 1, characterized in that: The pressure regulating assembly includes a piston plate (17) which is installed in an interference-sliding manner in the internal cavity of the partition (3), and a return spring (18) is fixedly connected between the piston plate (17) and the inner wall of the cavity, and a traction rope (19) is fixedly connected between the piston plate (17) and the center column (4). At the same time, during the rotation of the center column (4), the traction rope (19) pulls the piston plate (17) to slide elastically in the cavity. An air pipe (20) is also fixedly installed on the partition (3), and the air pipe (20) is connected to the internal space of the storage box (1) and the cavity structure.

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