A vegetable fresh-keeping modified atmosphere packaging device

Abstract

This utility model discloses a modified atmosphere packaging device for vegetable preservation, relating to the field of vegetable preservation packaging technology. The utility model includes a supporting base plate, a linear guide rail on the top surface of the supporting base plate, a placement seat on the top surface of the linear guide rail, a wiping mechanism above the placement seat, and a drying mechanism on one side of the wiping mechanism. A packaging box is fixedly connected to the top surface of the supporting base plate via a connecting rod, and a heat-sealing mechanism is provided inside the packaging box. By setting up the wiping and drying mechanisms, the top surface of the vegetable packaging box, which is embedded in the placement seat, is wiped and cleaned, preventing water droplets on the surface of the vegetable packaging box from affecting the heat-sealing effect of the preservation film. The extension of the wiping electric push rod causes the wiping body to fall, wiping the top surface of the vegetable packaging box. After the wiping electric push rod retracts, the wiping body rises and retracts back into the fixed box.

Description

Technical Field

[0001] This utility model relates to the field of vegetable preservation and packaging technology, specifically a modified atmosphere packaging device for vegetable preservation. Background Technology

[0002] Vegetables are an essential part of our lives. To better prevent damage during transportation, vegetables are usually packaged with modified atmosphere packaging. Modified atmosphere packaging is a technology that extends the shelf life of vegetables by adjusting the gas composition inside the packaging. It typically involves adjusting the ratio of nitrogen, oxygen, and carbon dioxide in the air inside the packaging box.

[0003] However, existing technologies still have the following problems:

[0004] Firstly, existing modified atmosphere packaging devices for vegetable preservation involve placing vegetables in packaging boxes and then pushing the boxes into the device for heat sealing. However, water droplets easily remain on the surface of the vegetable packaging boxes, which affects the heat sealing effect. It is also difficult to easily and effectively wipe away the water droplets on the surface of the packaging boxes, which is not conducive to widespread use.

[0005] Secondly, existing modified atmosphere packaging devices for vegetable preservation have poor filling effects when regulating the gas inside the vegetable packaging box, and the heat sealing effect of the vegetable packaging box after filling is not ideal, which easily leads to air leakage.

[0006] To address the aforementioned problems, the inventors have proposed a modified atmosphere packaging device for vegetable preservation. Utility Model Content

[0007] To address the problems of existing modified atmosphere packaging devices for vegetable preservation, such as the difficulty in conveniently wiping away water droplets on the surface of vegetable packaging boxes and the poor effect of gas extraction inside the packaging boxes, the purpose of this utility model is to provide a modified atmosphere packaging device for vegetable preservation.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a modified atmosphere packaging device for vegetable preservation, including a supporting base plate, a linear guide rail on the top surface of the supporting base plate, a placement seat on the top surface of the linear guide rail, a wiping mechanism above the placement seat, a drying mechanism on one side of the wiping mechanism, a packaging box fixedly connected to the top surface of the supporting base plate by a connecting rod, a heat sealing mechanism in the inner cavity of the packaging box, and an inflation mechanism on one side of the packaging box.

[0009] Preferably, the wiping mechanism includes a fixed box located above the placement seat, a wiping electric push rod is fixedly connected through the top surface of the fixed box, a lifting plate is fixedly connected to the telescopic end of the wiping electric push rod, and a wiping body is fixedly connected to the bottom surface of the lifting plate.

[0010] Preferably, the inflation mechanism includes a support block located on one side of the packaging box, a vertical plate fixedly connected to the top surface of the support block, left and right electric push rods fixedly connected to one side surface of the vertical plate, an air extraction pipe fixedly connected through one side surface of the vertical plate, and an inflation pipe fixedly connected through one side surface of the vertical plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. By setting up a wiping mechanism and a drying mechanism, the top surface of the vegetable packaging box embedded in the placement seat is wiped and cleaned to avoid water droplets on the surface of the vegetable packaging box affecting the heat sealing effect of the plastic wrap. The extension of the wiping electric push rod drives the wiping body to fall and wipe the top surface of the vegetable packaging box. After the wiping electric push rod retracts and drives the wiping body to rise and return to the fixed box, the blower motor in the drying mechanism drives the fan blades to rotate, blowing out the heat generated by the electric heating wire. The hot air is discharged through the air outlet pipe to dry the wiping body and improve the wiping effect of the vegetable packaging box.

[0013] 2. By incorporating a heat-sealing mechanism and an inflation mechanism, the extraction and inflation effect is improved, allowing the preservative gases to be better discharged into the vegetable packaging box. This also enhances the heat-sealing effect of the packaging box, preventing air leakage. The air pump, in conjunction with the extraction pipe, extracts the gas from inside the packaging box, while the high-pressure gas inside the inflation tank is discharged into the packaging box through the inflation pipe, ensuring better preservation of the vegetables. Furthermore, the cooperation of the first and second heat-sealing plates ensures better heat-sealing of the top surface of the packaging box with a protective film. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram showing the details of the drying mechanism of this utility model.

[0017] Figure 3 This is a structural schematic diagram showing the details of the wiping mechanism of this utility model.

[0018] Figure 4 This is a structural schematic diagram showing the details of the inflation mechanism of this utility model.

[0019] Figure 5 This is a structural schematic diagram showing the details of the heat sealing mechanism of this utility model.

[0020] In the diagram: 1. Support base plate; 2. Linear guide rail; 3. Placement seat; 4. Wiping mechanism; 41. Fixing box; 42. Wiping electric push rod; 43. Lifting plate; 44. Wiping body; 5. Drying mechanism; 51. Air outlet pipe; 52. Heating cover; 53. Electric heating wire; 54. Blower cover; 55. Blower motor; 56. Blower fan blade; 6. Packaging box; 7. Heat sealing mechanism; 71. Upper and lower plates; 72. Upper and lower electric push rods; 73. First heat sealing plate; 74. Arc groove; 75. Second heat sealing plate; 76. Miniature electric push rod; 8. Inflation mechanism; 81. Support block; 82. Vertical plate; 83. Left and right electric push rods; 84. Suction pipe; 85. Inflation pipe; 86. Fixing seat; 87. Inflation tank; 88. Suction pump. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Figure 1-5As shown, this utility model provides a modified atmosphere packaging device for vegetable preservation, including a supporting base plate 1. A linear guide rail 2 is provided on the top surface of the supporting base plate 1. The linear guide rail 2 is a common guide rail device that can drive the placement seat 3 to move back and forth, which is a known prior art and will not be described in detail here. The placement seat 3 is provided on the top surface of the linear guide rail 2, and a wiping mechanism 4 is provided above the placement seat 3. The wiping mechanism 4 includes a fixed box 41 located above the placement seat 3. A wiping electric push rod 42 is fixedly connected through the top surface of the fixed box 41. A lifting plate 43 is fixedly connected to the telescopic end of the wiping electric push rod 42. A wiping body 44 is fixedly connected to the bottom surface of the lifting plate 43. When the wiping electric push rod 42 extends, it drives the lifting plate 43 fixedly connected to its telescopic end and the wiping body 44 fixed to the bottom of the lifting plate 43 to fall until the wiping body 44 contacts the top surface of the vegetable packaging box. The linear guide rail 2 drives the vegetable packaging box in the placement seat 3 to move, and in conjunction with the wiping body 44, wipes the water droplets on the top surface of the vegetable packaging box. A drying mechanism 5 is provided on one side of the structure 4. The drying mechanism 5 includes an air outlet pipe 51 fixedly connected to the bottom surface of the fixed box 41. A heating cover 52 is fixedly connected to one end of the air outlet pipe 51. An electric heating wire 53 is fixedly connected to the inner surface of the heating cover 52. A blower cover 54 is fixedly connected to one side surface of the heating cover 52. A blower fan blade 56 is provided in the inner cavity of the blower cover 54. One end of the blower fan blade 56 is fixedly connected to the output end of the blower motor 55. One side surface of the blower motor 55 is fixedly connected to the blower cover 54 away from the heating cover 52. On the side surface, a blower motor 55 is provided on one side of the blower hood 54. When the blower motor 55 in the drying mechanism 5 is started, the blower motor 55 drives the blower fan blades 56 to rotate, blowing out the heat generated by the electric heating wire 53 inside the heating cover 52. The hot air is discharged through the air outlet pipe 51 to dry the wiping body 44. Both the blower hood 54 and the outer surface of the heating cover 52 are fixedly connected to a connecting plate. The bottom end of the connecting plate is fixedly connected to an extension seat. One end of the extension seat is fixedly connected to the support base plate 1 to ensure the stability of the drying mechanism 5.

[0023] A packaging box 6 is fixedly connected to the top surface of the supporting base plate 1 via a connecting rod. A plastic wrap winding device is installed on both sides of the packaging box 6, with the plastic wrap extending through the packaging box 6. The plastic wrap is located below the first heat-sealing plate 73. When the placement seat 3 moves to the bottom of the packaging box 6, the plastic wrap is positioned above the placement seat 3. This is known prior art. The winding of the plastic wrap is controlled by the plastic wrap winding device, which will not be elaborated further. A heat-sealing mechanism 7 is provided inside the packaging box 6. The heat-sealing mechanism 7 includes upper and lower plates 71 located inside the packaging box 6. Upper and lower electric push rods 72 are fixedly connected to the top surface of the upper and lower plates 71, with their sleeve ends fixedly connected to the packaging box 6. A first heat-sealing plate 73 is fixedly connected to the bottom surface of the upper and lower plates 71 via a vertical rod. An arc-shaped groove 74 is formed on the bottom surface of the first heat-sealing plate 73. A second heat-sealing plate 75 is slidably connected to one side surface of the first heat-sealing plate 73. A miniature electric push rod 76 is fixedly attached to the surface of the packaging box. The sleeve end of the miniature electric push rod 76 is fixedly connected to the upper and lower plates 71. Two arc-shaped grooves 74 are matched with the suction pipe 84 and the inflation pipe 85. When the upper and lower electric push rods 72 in the heat sealing mechanism 7 are activated, the upper and lower electric push rods 72 extend and drive the upper and lower plates 71 and the first heat sealing plate 73 fixed at the bottom of the upper and lower plates 71 to fall, pressing and heat sealing the surface of the vegetable packaging box. At this time, the arc-shaped grooves 74 are not closed. After the suction pipe 84 and the inflation pipe 85 are pulled out, the miniature electric push rod 76 is controlled to extend and drive the second heat sealing plate 75 fixedly connected to it to fall, thoroughly heat sealing the top surface of the vegetable packaging box. The bottom ends of the first heat sealing plate 73 and the second heat sealing plate 75 are both embedded and fixedly connected to electric heating plates. After the electric heating plates are activated, the first heat sealing plate 73 and the second heat sealing plate 75 can heat seal the plastic wrap on the top surface of the vegetable packaging box.

[0024] An inflation mechanism 8 is provided on one side of the packaging box 6. The inflation mechanism 8 includes a support block 81 located on one side of the packaging box 6. A vertical plate 82 is fixedly connected to the top surface of the support block 81. Left and right electric push rods 83 are fixedly connected to one side surface of the vertical plate 82. An air extraction pipe 84 is fixedly connected through one side surface of the vertical plate 82. An inflation pipe 85 is fixedly connected through one side surface of the vertical plate 82. The inflation mechanism 8 also includes a fixed base 86 located below the support base plate 1. An air tank 87 is movably connected to the top surface of the fixed base 86. The air outlet of the air tank 87 is connected to a flexible hose. A vacuum pump 88 is fixedly connected to the top surface of the mounting base 86 and the inflation tube 85. The suction end of the vacuum pump 88 is fixedly connected to the suction tube 84 through a hose. The extension and retraction of the left and right electric push rods 83 drives the movement of the suction tube 84 and the inflation tube 85. The vacuum pump 88 is started to extract the gas inside the vegetable packaging box through the suction tube 84. The inflation tank 87 contains a high proportion of nitrogen and a very low proportion of oxygen and carbon dioxide. When the switch valve on the outside of the gas outlet of the inflation tank 87 is opened, the gas enters the vegetable packaging box through the inflation tube 85.

[0025] It should be noted that, with the assistance of those skilled in the art, all electrical components in this case, such as the electric wiping actuator 42, the electric heating wire 53, the blower motor 55, the up-and-down electric actuator 72, the miniature electric actuator 76, the left-and-right electric actuator 83, and the air pump 88, should be connected to their compatible power supplies via wires. Furthermore, a suitable controller, such as a PLC controller, should be selected according to the actual situation to meet the control requirements. The specific connections and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without further explanation of the electrical control.

[0026] Working principle: When in use, first place the vegetable packaging box containing vegetables into the groove on the top surface of the placement seat 3, then control the wiping electric push rod 42 to extend, and the lifting plate 43 and wiping body 44 to fall until the wiping body 44 contacts the top surface of the vegetable packaging box.

[0027] Furthermore, the linear guide 2 drives the vegetable packaging box in the placement seat 3 to move, and in conjunction with the wiping body 44, wipes the water droplets on the top surface of the vegetable packaging box. After wiping is completed, the electric push rod 42 is controlled to retract, and the wiping body 44 is returned to the fixed box 41. The blower motor 55 drives the blower fan blade 56 to rotate, blowing out the heat generated by the electric heating wire 53 inside the heating cover 52. The hot air is discharged through the air outlet pipe 51 to dry the wiping body 44.

[0028] Furthermore, the vegetable packaging box moves to the bottom of the packaging box 6, below the plastic wrap, and then the left and right electric push rods 83 are extended to drive the movement of the suction pipe 84 and the inflation pipe 85, so that one end of the suction pipe 84 and the inflation pipe 85 is positioned above the vegetable packaging box.

[0029] Furthermore, the upper and lower electric push rods 72 in the heat sealing mechanism 7 are activated. The upper and lower electric push rods 72 extend and drive the first heat sealing plate 73 to fall, pressing and heat sealing the surface of the vegetable packaging box. At this time, the arc groove 74 will not be closed, that is, the air extraction pipe 84 and the air inflation pipe 85 will not be fixedly connected to the plastic wrap.

[0030] Furthermore, the air pump 88 is started to extract gas from inside the vegetable packaging box through the air extraction pipe 84, and the switch valve on the outside of the air outlet of the air tank 87 is opened, so that the gas enters the vegetable packaging box through the air extraction pipe 85.

[0031] Furthermore, by controlling the retraction of the left and right electric push rods 83, the air extraction pipe 84 and the air inflation pipe 85 are driven away from the vegetable packaging box. Then, the mini electric push rod 76 is controlled to extend, causing the second heat-sealing plate 75, which is fixedly connected to it, to fall down, so as to thoroughly heat-seal the top surface of the vegetable packaging box and ensure its airtightness.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0033] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A modified atmosphere packaging device for vegetable preservation, comprising a supporting base plate (1), characterized in that: The top surface of the support base plate (1) is provided with a linear guide rail (2), the top surface of the linear guide rail (2) is provided with a placement seat (3), a wiping mechanism (4) is provided above the placement seat (3), a drying mechanism (5) is provided on one side of the wiping mechanism (4), a packaging box (6) is fixedly connected to the top surface of the support base plate (1) by a connecting rod, a heat sealing mechanism (7) is provided in the inner cavity of the packaging box (6), and an inflation mechanism (8) is provided on one side of the packaging box (6).

2. The modified atmosphere packaging device for vegetable preservation as described in claim 1, characterized in that, The wiping mechanism (4) includes a fixed box (41) located above the placement seat (3). A wiping electric push rod (42) is fixedly connected through the top surface of the fixed box (41). A lifting plate (43) is fixedly connected to the telescopic end of the wiping electric push rod (42). A wiping body (44) is fixedly connected to the bottom surface of the lifting plate (43).

3. A modified atmosphere packaging device for vegetable preservation as described in claim 2, characterized in that, The drying mechanism (5) includes an air outlet pipe (51) fixedly connected to the bottom surface of the fixed box (41). A heating cover (52) is fixedly connected to one end of the air outlet pipe (51). An electric heating wire (53) is fixedly connected to the inner surface of the heating cover (52). A blower cover (54) is fixedly connected to one side surface of the heating cover (52). A blower motor (55) is provided on one side of the blower cover (54).

4. A modified atmosphere packaging device for vegetable preservation as described in claim 3, characterized in that, The inner cavity of the blower cover (54) is provided with blower fan blades (56). One end of the blower fan blades (56) is fixedly connected to the output end of the blower motor (55). One side surface of the blower motor (55) is fixedly connected to the side surface of the blower cover (54) away from the heating cover (52).

5. A modified atmosphere packaging device for vegetable preservation as described in claim 1, characterized in that, The heat sealing mechanism (7) includes upper and lower plates (71) located in the inner cavity of the packaging box (6). The upper and lower plates (71) are fixedly connected to the top surface of the upper and lower plates (71), and the sleeve end of the upper and lower electric push rods (72) is fixedly connected to the packaging box (6). The bottom surface of the upper and lower plates (71) is fixedly connected to the first heat sealing plate (73) by a vertical rod. The bottom surface of the first heat sealing plate (73) is provided with an arc-shaped groove (74).

6. A modified atmosphere packaging device for vegetable preservation as described in claim 5, characterized in that, A second heat-sealing plate (75) is slidably connected to one side surface of the first heat-sealing plate (73). A miniature electric push rod (76) is fixed on the top surface of the second heat-sealing plate (75). The sleeve end of the miniature electric push rod (76) is fixedly connected to the upper and lower plates (71).

7. A modified atmosphere packaging device for vegetable preservation as described in claim 1, characterized in that, The inflation mechanism (8) includes a support block (81) located on one side of the packaging box (6). A vertical plate (82) is fixedly connected to the top surface of the support block (81). A left and right electric push rod (83) is fixedly connected to one side surface of the vertical plate (82). An air extraction pipe (84) is fixedly connected through one side surface of the vertical plate (82). An inflation pipe (85) is fixedly connected through one side surface of the vertical plate (82).

8. A modified atmosphere packaging device for vegetable preservation as described in claim 7, characterized in that, The inflation mechanism (8) also includes a fixed base (86) located below the support base plate (1). An inflation tank (87) is movably connected to the top surface of the fixed base (86). The air outlet of the inflation tank (87) is fixedly connected to the inflation pipe (85) through a hose. An air pump (88) is fixedly connected to the top surface of the fixed base (86). The air pump (88) has its air extraction end fixedly connected to the air extraction pipe (84) through a hose.

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