A fresh-keeping device for agricultural fruits and vegetables

Abstract

The present invention discloses a fresh-keeping device for agricultural fruits and vegetables, which relates to the field of fresh-keeping devices and includes a fresh-keeping cabinet. The interior of the fresh-keeping cabinet is provided with multiple groups of partition plates from top to bottom, and the multiple groups of partition plates divide the interior of the fresh-keeping cabinet into multiple fresh-keeping chambers for placing fruits and vegetables. The side wall of the fresh-keeping cabinet is provided with an extension portion, and an air extraction cavity is opened on the extension portion. The air extraction cavity and the fresh-keeping chamber are in a one-to-one correspondence. A piston plate that can move back and forth is provided inside the air extraction cavity. In the present invention, each time the piston plate moves back and forth inside the air extraction cavity, a portion of the air inside the fresh-keeping chamber will be extracted to the outside of the fresh-keeping cabinet, so that the interior of the fresh-keeping chamber is in a low-oxygen state or a vacuum state, which can effectively inhibit the respiration of fruits and vegetables, thereby extending the shelf life of fruits and vegetables. The vacuuming operation inside the fresh-keeping chamber can be completed without using electrical equipment, effectively reducing storage costs.

Description

Technical Field

[0001] The present invention relates to the field of fresh-keeping devices, in particular to a fresh-keeping device for agricultural fruits and vegetables. Background Art

[0002] Fruits and vegetables are rich in vitamins, carotene, minerals, cellulose, carbohydrates, etc., and are indispensable foods in people's lives. In the cultivation of fruits and vegetables, freshly picked fruits and vegetables are often not immediately loaded into transport boxes and transported to sales areas, and sometimes they are unsalable. Therefore, farmers often put the picked fruits and vegetables into cellars or fresh-keeping cabinets for temporary storage to keep the fruits and vegetables fresh for a longer time to prevent affecting sales.

[0003] Currently, most fresh-keeping cabinets use cold air to maintain freshness, achieving a fresh-keeping effect by lowering the temperature. However, when used to preserve large quantities of fruits and vegetables, a large amount of electricity is consumed, which greatly increases economic costs. It is also easy to cause moisture evaporation from the surface of fruits and vegetables, thereby reducing the value of agricultural products. As we know, the reason why fruits and vegetables become stale is that after picking, there is no increase in nutrients, only nutrient loss. This loss of nutrients is mainly through plant respiration. Plant respiration consumes oxygen and generates carbon dioxide and heat. Low-temperature refrigeration is used because low temperatures can greatly reduce plant respiration, thereby extending the shelf life of fruits and vegetables. Obviously, reducing the oxygen content can also have the effect of inhibiting respiration. This is why fruits and vegetables have a longer shelf life under vacuum conditions. Therefore, designing a fresh-keeping cabinet that can exhaust oxygen from the inside of the cabinet can greatly extend the shelf life of fruits and vegetables. In order to reduce actual production costs, mechanical structures can be used instead of electrical equipment to achieve the above purpose.

[0004] Therefore, it is necessary to invent a fresh-keeping device for agricultural fruits and vegetables to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a fresh-keeping device for agricultural fruits and vegetables to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a fresh-keeping device for agricultural fruits and vegetables, comprising a fresh-keeping cabinet, wherein the interior of the fresh-keeping cabinet is provided with multiple groups of partition plates from top to bottom, and the multiple groups of partition plates divide the interior of the fresh-keeping cabinet into multiple fresh-keeping chambers for placing fruits and vegetables. The side wall of the fresh-keeping cabinet is provided with an extension portion, and an air extraction cavity is opened on the extension portion, and the air extraction cavity and the fresh-keeping chamber are in a one-to-one correspondence. A piston plate is provided in the interior of the air extraction cavity that can move back and forth, and the front side surface of the piston plate is fixedly connected to one end of a push-pull rod, and the other end of the push-pull rod passes through the front side wall of the extension portion, and the rear side end of the air extraction cavity is provided with a first air extraction hole that is interconnected with the interior of the fresh-keeping chamber, and the rear side end of the air extraction cavity is also provided with an exhaust hole that is interconnected with the outside of the extension portion, and a one-way valve is provided inside the first air extraction hole and the exhaust hole, and the front side surface of the fresh-keeping cabinet is movably hinged with a flip sealing plate that seals the fresh-keeping chamber port, and the flip sealing plate can be flipped up and down in a vertical plane.

[0007] Preferably, an air cavity is provided in the layer structure of the inner wall of the fresh-keeping cabinet, and a second air extraction hole communicating with the interior of the air cavity is provided at the rear end of the air extraction hole, and a one-way valve is provided inside the second air extraction hole.

[0008] Preferably, a rotating rod parallel to the flip sealing plate is fixed on the top, and the rotating rod is movably hinged to the front side of the fresh-keeping cabinet. The fresh-keeping cabinet is provided with a flip assembly for controlling the flip sealing plate to rotate around the axis of the rotating rod.

[0009] Preferably, the flip assembly includes a vertical slide groove, a gear ring and a rack. The gear ring is fixedly connected to the two ends of the rotating rod, and the gear ring and the rotating rod are coaxially arranged. A vertical slide groove is opened at a position corresponding to the gear ring on the front side of the fresh-keeping cabinet. The interior of the vertical slide groove is slidably connected to a rack that meshes with the gear ring, and the rack can move up and down inside the vertical slide groove.

[0010] Preferably, the bottom end of the rack is fixedly connected to the bottom of the vertical slide groove by a compression spring, and a driving cavity is also provided in the internal layer structure of the fresh-keeping cabinet below the vertical slide groove, and a winding roller that rotates back and forth around its own axis is provided near the bottom end of the driving cavity, and the center position of the front side surface of the winding roller is fixedly connected to one end of the threaded rod, and the other end of the threaded rod extends out of the threaded groove on the front side surface of the fresh-keeping cabinet and is fixedly connected to the driving handle. The bottom end of the rack is also fixedly connected to one end of the pull rope, and the other end of the pull rope penetrates into the interior of the driving cavity and is fixedly connected to the outer periphery of the winding roller. Circular gears coaxial with the threaded rod are fixedly provided on the threaded rods on both sides of the same fresh-keeping chamber, and the two sets of circular gears are meshed with each other through a transmission chain for transmission, and the partition plate is also provided with an accommodating cavity for the transmission chain to pass through.

[0011] Preferably, a first eccentric piece is fixedly provided on the threaded rod between the fresh-keeping cabinet and the driving handle, the threaded rod is located at the eccentric position of the first eccentric piece, and a group of clamping plates are respectively provided on the left and right sides of the bottom end of the flip sealing plate. When the threaded rod rotates, the first eccentric piece passes through the outer surface of the clamping plate, and when the first eccentric piece gradually rotates to the outer surface of the clamping plate, the threaded rod is screwed into the inside of the threaded groove.

[0012] Preferably, the front of the extension is provided with a pull plate that can be moved closer to or away from the fresh-keeping cabinet, and the front end face of the push-pull rod is rotatably connected to a rotating handle, and a second eccentric piece is fixed on the rotating handle, and the rotating handle is located at the eccentric position of the second eccentric piece. The pull plate is provided with an embedding groove for the second eccentric piece to be screwed into on one side facing the outer periphery of the second eccentric piece.

[0013] Preferably, the side wall of the fresh-keeping cabinet is provided with a balancing air pressure hole interconnected with the interior of the fresh-keeping chamber, and the inner wall of the fresh-keeping chamber is provided with a flaring groove interconnected with the balancing air pressure hole, and a conical sealing plug is provided inside the flaring groove, the tip of the sealing plug extends into the interior of the balancing air pressure hole, and the sealing plug can move back and forth inside the flaring groove along the axis of the balancing air pressure hole.

[0014] Preferably, a fixing is provided inside the balance air pressure hole near the external port, and the fixing is fixedly connected to the tip of the sealing plug through a compression spring. The tip of the sealing plug is also fixedly connected to one end of a pull rope, and the other end of the pull rope extends out of the outer wall of the fresh-keeping cabinet and is fixedly connected to a hanging ring. The outer wall of the fresh-keeping cabinet is provided with a hanging rod that is hung with the hanging ring.

[0015] Preferably, an ice trough is provided on the upper surface of the partition plate, and a perforated plate is provided at the upper end of the ice trough.

[0016] The technical effects and advantages of the present invention are as follows:

[0017] In the present invention, each time the piston plate moves back and forth inside the air extraction chamber, a portion of the air inside the fresh-keeping chamber will be extracted to the outside of the fresh-keeping cabinet, so that the interior of the fresh-keeping chamber is in a low-oxygen state or a vacuum state, which can effectively inhibit the respiration of fruits and vegetables, thereby extending the shelf life of fruits and vegetables. In addition, the vacuuming operation inside the fresh-keeping chamber can be completed without using electrical equipment, effectively reducing storage costs.

[0018] The present invention controls the flipping of the flip sealing plate by the up-and-down movement of the rack in the vertical slide groove. The flip sealing plate can be positioned not only when the fresh-keeping chamber is sealed, but also at any position when flipped upward, so that the opening size of the fresh-keeping chamber can be controlled, and there are no safety hazards such as pinching people's hands or people being knocked down by the flip sealing plate when loading fruits and vegetables into the fresh-keeping chamber.

[0019] When the driving handle drives the threaded rod to rotate, since the threaded rod is located at the eccentric position of the first eccentric piece, the first eccentric piece will gradually press on the pressing plate on the flip sealing plate, thereby pressing the flip sealing plate against the port of the fresh-keeping chamber. When the first eccentric piece gradually rotates to the outer surface of the pressing plate, the threaded rod is screwed into the inside of the thread groove, and the pressing effect of the first eccentric piece on the pressing plate will be better.

[0020] Put ice cubes or ice water in the ice trough to keep the interior of the fresh-keeping chamber at a low temperature, further inhibiting the respiration of fruits and vegetables. The perforated plate can prevent fruits and vegetables from being frostbitten by direct contact with ice water or ice cubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a first structural schematic diagram of the agricultural fruit and vegetable preservation device of the present invention.

[0022] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle.

[0023] Figure 3 For the present invention Figure 1 Enlarged structural diagram at point B in the middle.

[0024] Figure 4 This is a second structural schematic diagram of the agricultural fruit and vegetable preservation device of the present invention.

[0025] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point C in the middle.

[0026] Figure 6 Schematic diagram of the internal structure of the driving cavity.

[0027] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point D in the middle.

[0028] Figure 8 Schematic diagram of the internal structure of the air pumping cavity of the present invention.

[0029] Figure 9 Schematic diagram of the connection between the first eccentric member, the threaded rod, the circular gear and the winding roller in the present invention.

[0030] Figure: 1, fresh-keeping cabinet; 2, extension; 3, flip sealing plate; 4, partition plate; 5, fresh-keeping chamber; 6, vertical slide; 7, driving handle; 8, hanging ring; 9, hanging rod; 10, pull plate; 11, embedded groove; 12, second eccentric member; 13, rotating handle; 14, perforated plate; 15, first eccentric member; 16, rotating rod; 17, gear ring; 18, rack; 19, push-pull rod; 20, threaded rod; 21, driving chamber ; 22. Ice trough; 23. Accommodating chamber; 24. Transmission chain; 25. Circular gear; 26. Winding roller; 27. Threaded groove; 28. Air cavity; 29. ​​Balanced air pressure hole; 30. Fixing piece; 31. Sealing plug; 32. Expanding groove; 33. Exhaust cavity; 34. Piston plate; 35. First exhaust hole; 36. Second exhaust hole; 37. Exhaust hole; 38. Limiting groove; 39. Connecting rod; 40. Limiting block; 41. Pressing plate. DETAILED DESCRIPTION

[0031] 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.

[0032] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the invention belongs. The words "first", "second" and similar terms used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "an" do not necessarily indicate a quantity limitation. Words such as "include" or "comprising" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0033] The present invention provides Figures 1-9The illustrated embodiment of an agricultural fruit and vegetable preservation device comprises a fresh-keeping cabinet 1, wherein the interior of the fresh-keeping cabinet 1 is provided with a plurality of groups of partition plates 4 from top to bottom, and the plurality of groups of partition plates 4 divide the interior of the fresh-keeping cabinet 1 into a plurality of fresh-keeping chambers 5 for placing fruits and vegetables. The side wall of the fresh-keeping cabinet 1 is provided with an extension 2, and an air extraction cavity 33 is provided on the extension 2. The air extraction cavity 33 is in a one-to-one correspondence with the fresh-keeping chamber 5. A piston plate 34 that can move back and forth is provided inside the air extraction cavity 33, and the front side of the piston plate 34 is connected to the push-pull rod. One end of 19 is fixedly connected, and the other end of the push-pull rod 19 passes through the front side wall of the extension part 2. The rear side end of the air extraction cavity 33 is provided with a first air extraction hole 35 which is interconnected with the interior of the fresh-keeping chamber 5. The rear side end of the air extraction cavity 33 is also provided with an exhaust hole 37 which is interconnected with the outside of the extension part 2. Both the first air extraction hole 35 and the exhaust hole 37 are provided with a one-way valve. The front side of the fresh-keeping cabinet 1 is movably hinged with a flip sealing plate 3 which seals the port of the fresh-keeping chamber 5, and the flip sealing plate 3 can be flipped up and down in a vertical plane.

[0034] When the present invention is actually used, fruits and vegetables can be directly placed inside the fresh-keeping chamber 5, and then the port of the fresh-keeping chamber 5 can be sealed by turning the sealing plate 3, and then the piston plate 34 can be driven to move back and forth inside the air extraction chamber 33 by pulling the push-pull rod 19 back and forth. When the piston plate 34 moves toward the front end of the air extraction chamber 33, the air inside the fresh-keeping chamber 5 will enter the air extraction chamber 33 through the first air extraction hole 35, and when the piston plate 34 moves toward the rear end of the air extraction chamber 33 again, the air inside the air extraction chamber 33 will be squeezed by the piston plate 34 and ejected from the exhaust hole 37. Figure 8 As shown in FIG, each time the piston plate 34 moves back and forth inside the air extraction chamber 33, a portion of the air inside the fresh-keeping chamber 5 will be extracted to the outside of the fresh-keeping cabinet 1, so that the interior of the fresh-keeping chamber 5 is in a low-oxygen state or a vacuum state, which can effectively inhibit the respiration of fruits and vegetables, thereby extending the shelf life of fruits and vegetables, and the vacuuming operation inside the fresh-keeping chamber 5 can be completed without using electrical equipment, effectively reducing storage costs;

[0035] It should be noted that a sealing structure such as a rubber ring should be provided between the flip sealing plate 3 and the fresh-keeping cabinet 1 so that the interior of the fresh-keeping chamber 5 is in a well-sealed state.

[0036] In order to improve the thermal insulation performance of the fresh-keeping cabinet 1 itself and prevent external heat from entering the interior of the fresh-keeping chamber 5, an air cavity 28 is opened in the layer structure of the inner wall of the fresh-keeping cabinet 1, and a second air extraction hole 36 that is interconnected with the interior of the air cavity 28 is also opened at the rear end of the air extraction hole 33, and a one-way valve is provided inside the second air extraction hole 36.

[0037] When the piston plate 34 moves back and forth inside the vacuum chamber 33, since the vacuum chamber 33 is connected to the interior of the air chamber 28 through the second vacuum hole 36, when the piston plate 34 moves toward the front end of the vacuum chamber 33, the air inside the air chamber 28 will enter the interior of the vacuum chamber 33, and when the piston plate 34 moves toward the rear end of the vacuum chamber 33, the air inside the vacuum chamber 33 will also be discharged from the exhaust hole 37, thereby achieving the effect of vacuuming the interior of the air chamber 28.

[0038] In order to realize the flipping of the flip sealing plate 3 in the vertical plane, a rotating rod 16 parallel to the flip sealing plate 3 is fixed on the top of the flip sealing plate 3, and the rotating rod 16 is movably hinged on the front side of the fresh-keeping cabinet 1. The fresh-keeping cabinet 1 is provided with a flip assembly for controlling the rotation of the flip sealing plate 3 around the axis of the rotating rod 16.

[0039] Specifically, the flip assembly includes a vertical slide 6, a gear ring 17 and a rack 18. The gear ring 17 is fixedly connected to the two ends of the rotating rod 16, and the gear ring 17 is coaxially arranged with the rotating rod 16. A vertical slide 6 is provided at a position corresponding to the gear ring 17 on the front side of the fresh-keeping cabinet 1. The interior of the vertical slide 6 is slidably connected to a rack 18 that meshes with the gear ring 17, and the rack 18 can move up and down inside the vertical slide 6.

[0040] like Figure 1 and Figure 2 As shown in , when the rack 18 moves downward in the vertical slide 6, the rack 18 will mesh with the gear ring 17 and drive the rotation of the rotating rod 16, so that the flip sealing plate 3 fixedly connected to the rotating rod 16 will flip upward, thereby opening the port of the fresh-keeping chamber 5, and when the rack 18 moves up again, the rack 18 will mesh with the gear ring 17 again and drive the rotating rod 16 to rotate. At this time, the flip sealing plate 3 fixedly connected to the rotating rod 16 will seal the port of the fresh-keeping chamber 5 again, and the opening and closing of the port of the fresh-keeping chamber 5 can be achieved by the up and down movement of the rack 18, and the position of the flip sealing plate 3 can be fixed when it is in the upward flipped state, so that it is convenient to place fruits and vegetables in the fresh-keeping chamber 5, without having to use one hand to support the flip sealing plate 3 and the other hand to place fruits and vegetables in the fresh-keeping chamber 5;

[0041] When the handle 3 is closed, the sealing plate 3 is rotated to the left of the container 1, and the sealing plate 3 is rotated to the right of the container 1. When the handle 3 is closed, the sealing plate 3 is rotated to the left of the container 1, and the sealing plate 3 is rotated to the right of the container 1. When the handle 3 is closed, the sealing plate 3 is rotated to the right of the container 1, and the sealing plate 3 is rotated to the right of the container 1.

[0042] In addition, it should be noted that the up and down movement of the rack 18 can be carried out by any form of a single component or a linkage assembly, such as using an electric push rod connected to the bottom end of the rack 18, and driving the rack 18 to move up and down by starting the electric push rod, or directly pushing the rack 18 up and down by a handle, etc., and fixing the position of the rack 18 by tightening screws, etc., or other methods can also be used. The method in the present invention is only one embodiment.

[0043] In order to realize the up and down movement of the rack 18, the bottom end of the rack 18 is fixedly connected to the bottom of the vertical slide 6 through a compression spring. A driving cavity 21 is also provided in the internal layer structure of the fresh-keeping cabinet 1 below the vertical slide 6. A winding roller 26 that rotates back and forth around its own axis is provided inside the driving cavity 21 near the bottom end. The center position of the front side of the winding roller 26 is fixedly connected to one end of the threaded rod 20. The other end of the threaded rod 20 extends out of the threaded groove 27 on the front side of the fresh-keeping cabinet 1 and is fixedly connected to the driving handle 7. The bottom end of the rack 18 is also fixedly connected to one end of the pull rope, and the other end of the pull rope penetrates into the interior of the driving cavity 21 and is fixedly connected to the outer periphery of the winding roller 26.

[0044] During actual operation, when the threaded rod 20 rotates inside the threaded groove 27, the threaded rod 20 will drive the rotation of the winding roller 26. When the winding roller 26 rotates, it will wind up the pull rope fixed to the outer periphery. The pull rope will pull the bottom end of the rack 18 and drive the rack 18 to move downward inside the vertical slide groove 6. At this time, the rack 18 will mesh with the gear ring 17 and drive the flip sealing plate 3 to flip upward. When the threaded rod 20 rotates in the opposite direction to the original direction, the pull rope will be unwound from the outer periphery of the winding roller 26. The pull rope no longer pulls the rack 18. The rack 18 will move upward under the action of the compression spring fixed thereto, and mesh with the gear ring 17 during the upward movement, driving the flip sealing plate 3 to flip downward and sealing the port of the fresh-keeping chamber 5.

[0045] It is worth mentioning that in order to make the flipping of the flip sealing plate 3 more stable, threaded rods 20, drive chambers 21 and winding rollers 26 are provided on both sides of the left and right sides of the outer port of the fresh-keeping chamber 5, and for convenience, circular gears 25 coaxial with the threaded rods 20 are fixed on the threaded rods 20 on both sides of the same fresh-keeping chamber 5. The two sets of circular gears 25 are meshed and transmitted to each other through the transmission chain 21. The partition plate 4 is also provided with a accommodating chamber 23 for the transmission chain 21 to pass through. Then, when one set of threaded rods 20 rotates, it can drive the rotation of the other set of threaded rods 20.

[0046] Since the interior of the fresh-keeping chamber 5 needs to be vacuumed, the sealing performance of the interior of the fresh-keeping chamber 5 is required to be better. Therefore, a first eccentric piece 15 is fixedly provided on the threaded rod 20 between the fresh-keeping cabinet 1 and the driving handle 7. The threaded rod 20 is located at the eccentric position of the first eccentric piece 15. A group of clamping plates 41 are provided on the left and right sides of the bottom end of the flip sealing plate 3. The first eccentric piece 15 passes through the outer surface of the clamping plate 41 as the threaded rod 20 rotates, and when the first eccentric piece 15 gradually rotates to the outer surface of the clamping plate 41, the threaded rod 20 is screwed into the interior of the thread groove 27.

[0047] like Figure 2 and Figure 9As shown in, when the driving handle 7 drives the threaded rod 20 to rotate, since the threaded rod 20 is located at the eccentric position of the first eccentric piece 15, the first eccentric piece 15 will gradually press on the pressure plate 41 on the flip sealing plate 3, thereby pressing the flip sealing plate 3 against the end of the fresh-keeping chamber 5, and when the first eccentric piece 15 gradually rotates to the outer surface of the pressure plate 41, the threaded rod 20 is screwed into the inside of the thread groove 27, and the pressure effect of the first eccentric piece 15 on the pressure plate 41 will be better. It should be noted that when the compression spring fixedly connected to the rack 18 is in a natural state (the state in which the flip sealing plate 3 seals the end of the fresh-keeping chamber 5), the pull rope fixedly connected to the rack 18 is in a non-straightened state. Then, when the driving handle 7 drives the threaded rod 20 to rotate, the first eccentric piece 15 will first detach from the surface of the pressure plate 41, and then the pull rope fixedly connected to the outer periphery of the winding roller 26 will pull the rack 18 downward, and the flip sealing plate 3 flips upward and opens the fresh-keeping chamber 5.

[0048] It should be noted that the first eccentric member 15 in the present invention can be an eccentric disc, an eccentric polygon or a convex plate, etc., as long as the first eccentric member 15 can be pressed against and detached from the surface of the pressing plate 41 when rotating.

[0049] Since there are multiple groups of vacuum chambers 33, it is obviously time-consuming to operate only one group of push-pull rods 19 at a time and move the piston plate 34 back and forth inside the vacuum chamber 33. The front of the extension part 2 is provided with a pull plate 10 that can move closer to or away from the fresh-keeping cabinet 1. The front end face of the push-pull rod 19 is rotatably connected to a rotating handle 13. A second eccentric piece 12 is fixed on the rotating handle 13. The rotating handle 13 is located at the eccentric position of the second eccentric piece 12. The pull plate 10 is provided with an embedding groove 11 for the second eccentric piece 12 to be screwed into on one side facing the outer periphery of the second eccentric piece 12.

[0050] like Figure 1 and Figure 3 When the second eccentric member 12 is in the embedded groove 11 on the pull plate 10, the second eccentric member 12 will be moved in the direction of approaching or moving away from the extension portion 2, thereby driving the push-pull rod 19 to drive the piston plate 34 to move back and forth inside the suction chamber 33. When the interior of a group of fresh-keeping chambers 5 needs to be evacuated, it is only necessary to rotate the second eccentric member 12 corresponding to the fresh-keeping chamber 5 to the inside of the embedded groove 11. At this time, only the pull plate 10 needs to be moved to move the piston plate 34 inside the suction chamber 33, which is more convenient to operate. The interior of the fresh-keeping chamber 5 without fruits and vegetables does not need to be vacuumed, thereby avoiding ineffective vacuuming processing that is time-consuming and labor-intensive.

[0051] At the same time, the rear side of the pull plate 10 is fixedly connected to one end of the connecting rod 39, and the other end of the connecting rod 39 extends into the limiting groove 38 inside the extension part 2 and is fixedly connected to the limiting block 40 inside the limiting groove 38. The connecting rod 39 and the limiting block 40 play a role in limiting the back and forth movement of the pull plate 10;

[0052] It should be noted that the second eccentric member 12 in the present invention can be an eccentric disc, an eccentric polygon or a convex plate, etc., as long as the second eccentric member 12 can be inserted into or detached from the embedding groove 11 when rotating.

[0053] Since the interior of the fresh-keeping chamber 5 is in a vacuum state, the flip sealing plate 3 located at the port of the fresh-keeping chamber 5 will not be easy to open. In order to balance the air pressure inside and outside the fresh-keeping chamber 5, it is convenient to flip the flip sealing plate 3 upward and open the port of the fresh-keeping chamber 5. The side wall of the fresh-keeping cabinet 1 is provided with a balancing air pressure hole 29 that is interconnected with the interior of the fresh-keeping chamber 5, and the inner wall of the fresh-keeping chamber 5 is provided with a flared groove 32 that is interconnected with the balancing air pressure hole 29. A conical sealing plug 31 is provided inside the flared groove 32, and the tip of the sealing plug 31 extends into the interior of the balancing air pressure hole 29. The sealing plug 31 can move back and forth inside the flared groove 32 along the axis of the balancing air pressure hole 29.

[0054] A fixing part 30 is provided inside the balance air pressure hole 29 near the external port. The fixing part 30 is fixedly connected to the tip of the sealing plug 31 through a compression spring. The tip of the sealing plug 31 is also fixedly connected to one end of the pull rope. The other end of the pull rope extends out of the outer wall of the fresh-keeping cabinet 1 and is fixedly connected to the hanging ring 8. The outer wall of the fresh-keeping cabinet 1 is provided with a hanging rod 9 that is hung with the hanging ring 8.

[0055] At this time Figure 1 and Figure 8 As shown in the figure, the sealing plug 31 is in a state of sealing the balanced air pressure hole 29. The sealing plug 31 is pressed against the inner port of the balanced air pressure hole 29 under the pulling force of the pull rope fixed thereto, and the outside gas will not enter the interior of the fresh-keeping chamber 5. When the port of the fresh-keeping chamber 5 needs to be opened, the hanging ring 8 is removed from the hanging rod 9, and then the pull rope fixed thereto will no longer pull the sealing plug 31. The sealing plug 31 will be detached from the inner port of the balanced air pressure hole 29 under the action of the compression spring fixed thereto, and the outside gas will flow into the interior of the fresh-keeping chamber 5 through the balanced air pressure hole 29. When the air pressure inside the fresh-keeping chamber 5 is balanced with the outside air pressure, the flip sealing plate 3 can be easily opened.

[0056] An ice groove 22 is formed on the upper surface of the partition plate 4 , and a perforated plate 14 is provided at the upper end of the ice groove 22 .

[0057] In actual use, ice cubes or ice water can be placed in the ice groove 22, so that the interior of the fresh-keeping chamber 5 is in a low-temperature state, further inhibiting the respiration of fruits and vegetables. The perforated plate 14 can prevent fruits and vegetables from directly contacting ice water or ice cubes and causing frostbite.

[0058] Working principle: When the present invention is actually used, fruits and vegetables can be directly placed inside the fresh-keeping chamber 5, and then the port of the fresh-keeping chamber 5 can be sealed by turning over the sealing plate 3, and then the piston plate 34 can be driven to move back and forth inside the air pumping chamber 33 by pulling the push-pull rod 19 back and forth. When the piston plate 34 moves toward the front end of the air pumping chamber 33, the air inside the fresh-keeping chamber 5 will enter the air pumping chamber 33 through the first air pumping hole 35, and when the piston plate 34 moves toward the rear end of the air pumping chamber 33 again, the air inside the air pumping chamber 33 will be squeezed by the piston plate 34 and ejected from the exhaust hole 37. Figure 8 As shown in FIG, each time the piston plate 34 moves back and forth inside the air extraction chamber 33, a portion of the air inside the fresh-keeping chamber 5 will be extracted to the outside of the fresh-keeping cabinet 1, so that the interior of the fresh-keeping chamber 5 is in a low-oxygen state or a vacuum state, which can effectively inhibit the respiration of fruits and vegetables, thereby extending the shelf life of fruits and vegetables, and the vacuuming operation inside the fresh-keeping chamber 5 can be completed without using electrical equipment, effectively reducing storage costs;

[0059] It should be noted that a sealing structure such as a rubber ring should be provided between the flip sealing plate 3 and the fresh-keeping cabinet 1 so that the interior of the fresh-keeping chamber 5 is in a well-sealed state.

Claims

1. A fresh-keeping device for agricultural fruits and vegetables, comprising a fresh-keeping cabinet (1), characterized in that: The interior of the fresh-keeping cabinet (1) is provided with a plurality of partition plates (4) from top to bottom, and the plurality of partition plates (4) divide the interior of the fresh-keeping cabinet (1) into a plurality of fresh-keeping chambers (5) for placing fruits and vegetables. The side wall of the fresh-keeping cabinet (1) is provided with an extension portion (2), and an air extraction cavity (33) is provided on the extension portion (2). The air extraction cavity (33) and the fresh-keeping chamber (5) are in a one-to-one correspondence. A piston plate (34) that can move back and forth is provided inside the air extraction cavity (33), and the front side surface of the piston plate (34) is fixedly connected to one end of the push-pull rod (19). The other end of the pull rod (19) passes through the front side wall of the extension part (2), and the rear side end of the air extraction cavity (33) is provided with a first air extraction hole (35) interconnected with the interior of the fresh-keeping cavity (5), and the rear side end of the air extraction cavity (33) is also provided with an exhaust hole (37) interconnected with the exterior of the extension part (2). The interiors of the first air extraction hole (35) and the exhaust hole (37) are both provided with a one-way valve, and the front side of the fresh-keeping cabinet (1) is movably hinged with a flip sealing plate (3) that seals the port of the fresh-keeping cavity (5), and the flip sealing plate (3) can be flipped up and down in a vertical plane; An air cavity (28) is provided in the layer structure of the inner wall of the fresh-keeping cabinet (1), and a second air extraction hole (36) communicating with the interior of the air cavity (28) is provided at the rear end of the air extraction cavity (33), and a one-way valve is provided inside the second air extraction hole (36).

2. The device for preserving fruits and vegetables according to claim 1, characterized in that: A rotating rod (16) parallel to the flip sealing plate (3) is fixedly provided on the top thereof, and the rotating rod (16) is movably hinged to the front side of the fresh-keeping cabinet (1). The fresh-keeping cabinet (1) is provided with a flip assembly for controlling the flip sealing plate (3) to rotate around the axis of the rotating rod (16).

3. The device for preserving fruits and vegetables according to claim 2, characterized in that: The flip assembly comprises a vertical slide (6), a gear ring (17) and a rack (18), wherein the gear ring (17) is fixedly connected to both ends of the rotating rod (16), and the gear ring (17) and the rotating rod (16) are coaxially arranged. A vertical slide (6) is provided at a position corresponding to the gear ring (17) on the front side of the fresh-keeping cabinet (1), and a rack (18) meshing with the gear ring (17) is slidably connected inside the vertical slide (6), and the rack (18) can move up and down inside the vertical slide (6).

4. The device for preserving fruits and vegetables according to claim 3, characterized in that: The bottom end of the rack (18) is fixedly connected to the bottom of the vertical chute (6) through a compression spring. A driving chamber (21) is further provided below the vertical chute (6) in the internal layer structure of the fresh-keeping cabinet (1). A winding roller (26) that rotates back and forth around its own axis is provided inside the driving chamber (21) near the bottom end. The center position of the front side of the winding roller (26) is fixedly connected to one end of the threaded rod (20). The other end of the threaded rod (20) extends out of the threaded groove (27) on the front side of the fresh-keeping cabinet (1). ), and is fixedly connected to the driving handle (7), the bottom end of the rack (18) is also fixedly connected to one end of the pull rope, the other end of the pull rope is inserted into the interior of the driving cavity (21) and is fixedly connected to the outer periphery of the winding roller (26), and the threaded rods (20) on both sides of the same fresh-keeping chamber (5) are fixedly provided with circular gears (25) coaxial with the threaded rods (20), and the two sets of circular gears (25) are meshed with each other through a transmission chain. The partition plate (4) is also provided with a receiving cavity (23) for the transmission chain to pass through.

5. The device for preserving agricultural fruits and vegetables according to claim 4, characterized in that: A first eccentric member (15) is fixedly provided on the threaded rod (20) between the fresh-keeping cabinet (1) and the driving handle (7). The threaded rod (20) is located at an eccentric position of the first eccentric member (15). A group of pressing plates (41) are respectively provided on the left and right sides of the bottom end of the flip sealing plate (3). When the first eccentric member (15) passes through the outer surface of the pressing plate (41) as the threaded rod (20) rotates, and when the first eccentric member (15) gradually rotates to the outer surface of the pressing plate (41), the threaded rod (20) is screwed into the interior of the threaded groove (27).

6. The device for preserving agricultural fruits and vegetables according to claim 5, characterized in that: The front of the extension (2) is provided with a pull plate (10) that can be moved closer to or away from the fresh-keeping cabinet (1), and the front end face of the push-pull rod (19) is rotatably connected to a rotating handle (13), and a second eccentric member (12) is fixedly provided on the rotating handle (13). The rotating handle (13) is located at an eccentric position of the second eccentric member (12), and an embedding groove (11) for the second eccentric member (12) to be screwed into is provided on a side of the pull plate (10) facing the outer periphery of the second eccentric member (12).

7. The device for preserving agricultural fruits and vegetables according to claim 6, characterized in that: The side wall of the fresh-keeping cabinet (1) is provided with a balance air pressure hole (29) that is interconnected with the interior of the fresh-keeping chamber (5), and the inner wall of the fresh-keeping chamber (5) is provided with an expansion groove (32) that is interconnected with the balance air pressure hole (29). A conical sealing plug (31) is provided inside the expansion groove (32), and the tip of the sealing plug (31) extends into the interior of the balance air pressure hole (29). The sealing plug (31) can move back and forth inside the expansion groove (32) along the axis of the balance air pressure hole (29).

8. The device for preserving agricultural fruits and vegetables according to claim 7, characterized in that: A fixing member (30) is provided at a position near the outer end of the balance air pressure hole (29). The fixing member (30) is fixedly connected to the tip of the sealing plug (31) via a compression spring. The tip of the sealing plug (31) is also fixedly connected to one end of a drawstring. The other end of the drawstring extends out of the outer wall of the fresh-keeping cabinet (1) and is fixedly connected to the hanging ring (8). The outer wall of the fresh-keeping cabinet (1) is provided with a hanging rod (9) that is hung with the hanging ring (8).

9. The agricultural fruit and vegetable preservation device according to claim 8, characterized in that: An ice trough (22) is provided on the upper surface of the partition plate (4), and a perforated plate (14) is provided at the upper end of the ice trough (22).

Images