Stack position sealing structure for controlled atmosphere maintenance

Abstract

The utility model belongs to the technical field of tobacco leaf storage, and particularly relates to a stack position sealing structure for controlled atmosphere maintenance, which comprises a top plate. A plurality of supporting columns are fixedly connected to the bottom of the top plate, a bottom plate is fixedly connected to the bottoms of the supporting columns, a support is fixedly connected to the top of the top plate, an air cylinder is fixedly connected to the top of the support, a sliding block is fixedly connected to the bottom of the air cylinder and slidably connected with the top plate, and a plurality of connecting rods are hinged to the bottom of the sliding block. Sealing covers are hinged to the bottoms of the connecting rods, the sealing covers are rotationally connected with the top plate, an air inlet pipe is communicated with the outer side of one sealing cover, an exhaust pipe is arranged at the top of the air inlet pipe, the exhaust pipe is communicated with the sealing covers, and a stacking table is fixedly connected to the top of the bottom plate. Therefore, the problem that the tent is troublesome to disassemble and replace is solved, the tent can be repeatedly used, and the production cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of tobacco storage technology, specifically a stack sealing structure for controlled atmosphere preservation. Background Technology

[0002] After tobacco leaves are harvested and cured, they need to be aged to remove the green and pungent taste. The aging process takes 2 to 3 years. Because tobacco leaves are rich in nutrients, they are prone to insect infestation. In addition, tobacco leaves are prone to mold growth in humid and hot environments. Therefore, tobacco leaves need to be stored in sealed containers during the aging process.

[0003] In current production, tents are mainly used to seal tobacco stacks. The tent consists of a bottom film and a top film. The tobacco stacks are placed between the bottom film and the top film. Common methods for sealing the tent include: using a heat sealing machine to heat seal the top film and bottom film; using clips to clamp the top film and bottom film together for sealing; directly sticking the plastic film to a flat and smooth ground with tape; sticking the top film and bottom film together with plastic tape for sealing; and rolling the top film and bottom film together and pressing them with sandbags for sealing.

[0004] When using a tent to seal the tent, it is inconvenient to disassemble and replace it, and it cannot be reused. When ventilating and maintaining the tent with controlled atmosphere, it is necessary to balance the air pressure inside and outside the tent, otherwise it will damage the tent.

[0005] Therefore, this utility model provides a stack sealing structure for controlled atmosphere curing. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A stacking sealing structure for controlled atmosphere curing, comprising a top plate; multiple pillars are fixedly connected to the bottom of the top plate, a base plate is fixedly connected to the bottom of each pillar, a bracket is fixedly connected to the top of the top plate, a cylinder is fixedly connected to the top of the bracket, a slider is fixedly connected to the bottom of the cylinder, the slider is slidably connected to the top plate, multiple connecting rods are hinged to the bottom of the slider, and a sealing cover is hinged to the bottom of each connecting rod. The sealing cover is rotatably connected to the top plate, an air inlet pipe is connected to the outside of one of the sealing covers, an exhaust pipe is provided at the top of the air inlet pipe, and the exhaust pipe is connected to the sealing cover. A stacking platform is fixedly connected to the top of the base plate. During operation, the tobacco leaves requiring controlled atmosphere curing are first stacked... Placed on the stacking platform, the cylinder is activated, causing the slider to rise. The slider then moves the connecting rod, changing its angle and causing the sealing cover to rotate on the top plate. Finally, the sealing cover closes, sealing the stack. Nitrogen gas is then introduced through the inlet pipe, and the air inside the sealing cover is discharged through the exhaust pipe, achieving controlled atmosphere curing of the dried tobacco leaves. When curing is complete, the cylinder is activated again, causing the slider to press down. This, in turn, pushes the connecting rod to push the sealing cover, causing it to rotate on the top plate and open. After the sealing cover opens outward, the tobacco leaves on the stacking platform can be collected, preparing for the next controlled atmosphere curing operation. By setting the cylinder to move up and down to open and close the sealing cover, the problem of cumbersome disassembly and replacement of the tent is solved, allowing for repeated use and reducing production costs.

[0008] Preferably, two slots are provided on one side of the sealing cover, and two blocks are fixedly connected to the other side of the sealing cover. The slots and blocks correspond to each other. During operation, the cylinder drives the connecting rod to descend, so that when the sealing cover is closed, the slots and blocks are locked in place, tightly connecting the sealing covers and increasing their stability. By setting the slots and blocks to cooperate with each other, the sealing covers are first limited and guided to be tightly connected, increasing their stability and sealing performance after closure.

[0009] Preferably, a fixing frame is fixedly connected inside the exhaust pipe. A spring telescopic rod is fixedly connected to one end of the fixing frame, and a pressure relief ball is fixedly connected to one end of the spring telescopic rod. The pressure relief ball is slidably connected to the exhaust pipe. During operation, nitrogen gas is introduced into the intake pipe, and the gas pressure inside the sealing cover rises. Oxygen is then pushed out and disperses along the exhaust pipe to the outside of the sealing cover. When the gas pressure rises, oxygen enters the exhaust pipe and pushes the pressure relief ball to slide outward, causing a gap to open between the pressure relief ball and the exhaust pipe, facilitating the release of oxygen. When the internal and external gas pressures are balanced, the pressure relief ball experiences less thrust from the gas and resets under the action of the spring telescopic rod, tightly fitting against the inner wall of the exhaust pipe to ensure its internal sealing.

[0010] Preferably, a sealing plate is fixedly connected to one end of the exhaust pipe, and a groove is formed at one end of the sealing plate. A protrusion is fixedly connected to the outside of the pressure-discharging ball, and the groove and the protrusion correspond to each other. During operation, when the pressure-discharging ball is pushed outward by the gas, the protrusion follows the pressure-discharging ball away from the groove. The sealing plate seals the space between the exhaust pipe and the pressure-discharging ball to prevent gas from flowing in and out through the gap. The protrusion limits the pressure-discharging ball to prevent the pressure-discharging ball from having excessive force, which could cause the pressure-discharging ball to enter the exhaust pipe and get stuck, thereby affecting the adjustment of the air pressure balance inside and outside the sealing cover.

[0011] Preferably, the inner wall of the sealing cover is provided with a modified atmosphere box, which is fixedly connected to the sealing cover. During operation, the modified atmosphere box inside the sealing cover can convert oxygen into carbon dioxide, further reducing the oxygen content inside the sealing cover and reducing the phenomenon of tobacco leaves becoming moldy.

[0012] Preferably, the bottom of the sealing cover is provided with a sealing ring, which is fixedly connected to the sealing cover. During operation, the sealing cover is closed, causing the bottom of the sealing cover to fit against the stacking platform. Inevitably, there will be some gaps. The sealing ring fills these gaps to increase the airtightness inside the sealing cover.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The stack sealing structure for controlled atmosphere curing described in this utility model solves the problem of cumbersome disassembly and replacement of the tent by setting a cylinder to move up and down to push the sealing cover to open and close, thereby enabling repeated use and reducing production costs.

[0015] 2. The stack sealing structure for controlled atmosphere curing described in this utility model, by setting a slot and a block to cooperate with each other, first limits the fit between the sealing covers, guides the sealing covers to fit tightly together, and increases its stability and sealing performance after closure. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a schematic diagram of the stacking platform in this utility model;

[0019] Figure 3 This is a schematic diagram of the sealing cover in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the pressure ball in this utility model;

[0021] Figure 5 This is a schematic diagram of the sealing ring structure in this utility model;

[0022] In the diagram: 1. Top plate; 101. Support column; 102. Base plate; 11. Bracket; 12. Cylinder; 13. Slider; 14. Connecting rod; 15. Sealing cover; 16. Intake pipe; 17. Exhaust pipe; 18. Stacking platform; 2. Slot; 21. Block; 3. Fixing frame; 31. Spring telescopic rod; 32. Pressure relief ball; 4. Sealing plate; 41. Groove; 42. Protrusion; 5. Modified atmosphere box; 6. Sealing ring. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 3 As shown in the embodiment of this utility model, a stacking sealing structure for controlled atmosphere curing includes a top plate 1; multiple support columns 101 are fixedly connected to the bottom of the top plate 1, a base plate 102 is fixedly connected to the bottom of the support columns 101, a bracket 11 is fixedly connected to the top of the top plate 1, a cylinder 12 is fixedly connected to the top of the bracket 11, a slider 13 is fixedly connected to the bottom of the cylinder 12, the slider 13 is slidably connected to the top plate 1, multiple connecting rods 14 are hinged to the bottom of the slider 13, a sealing cover 15 is hinged to the bottom of the connecting rods 14, the sealing cover 15 is rotatably connected to the top plate 1, one of the sealing covers 15 has an air inlet pipe 16 connected to its outer side, the air inlet pipe 16 has an exhaust pipe 17 at its top, the exhaust pipe 17 is connected to the sealing cover 15, and a stacking platform 18 is fixedly connected to the top of the base plate 102. First, the tobacco leaves to be cured under controlled atmosphere are stacked on the stacking platform 1. 8. Then, cylinder 12 is activated, which drives slider 13 to rise. Slider 13 drives connecting rod 14 to move, and the angle of connecting rod 14 changes, causing the sealing cover 15 to rotate on the top plate 1. Finally, the sealing cover 15 closes, sealing the stack. Nitrogen gas is then introduced through air inlet pipe 16, and the air inside the sealing cover 15 is discharged through exhaust pipe 17, achieving controlled atmosphere curing of the dried tobacco leaves. When curing is completed, cylinder 12 is activated, which drives slider 13 to press down, and then connecting rod 14 pushes the sealing cover 15, causing the sealing cover 15 to rotate on the top plate 1 and open. After the sealing cover 15 opens outward, the tobacco leaves on the stacking platform 18 can be collected, and then prepared for the next controlled atmosphere curing work. By setting cylinder 12 to move up and down to push the opening and closing of the sealing cover 15, the problem of cumbersome disassembly and replacement of the tent is solved, and it can be reused, thereby reducing production costs.

[0025] like Figures 1 to 5As shown, two slots 2 are provided on one side of the sealing cover 15, and two blocks 21 are fixedly connected to the other side of the sealing cover 15. The slots 2 and the blocks 21 correspond to each other. When the cylinder 12 drives the connecting rod 14 to descend, the slots 2 and the blocks 21 are locked in place when the sealing cover 15 is closed, thus tightly connecting the sealing covers 15 and increasing the stability of the sealing covers 15. By setting the slots 2 and the blocks 21 to cooperate with each other, the sealing covers 15 are first limited and guided to be tightly connected, thus increasing their stability and sealing performance after closure.

[0026] like Figure 4 As shown, a fixing frame 3 is fixedly connected inside the exhaust pipe 17. A spring telescopic rod 31 is fixedly connected to one end of the fixing frame 3, and a pressure relief ball 32 is fixedly connected to one end of the spring telescopic rod 31. The pressure relief ball 32 is slidably connected to the exhaust pipe 17. Nitrogen gas is introduced into the intake pipe 16, and the gas pressure inside the sealing cover 15 rises, causing oxygen to be pushed out and dispersed to the outside of the sealing cover 15 along the exhaust pipe 17. When the gas pressure rises, oxygen enters the exhaust pipe 17 and pushes the pressure relief ball 32 to slide outward, causing the pressure relief ball 32 to open a gap between the exhaust pipe 17 and the pressure relief ball 32, which facilitates the oxygen to disperse. When the internal and external gas pressures are balanced, the pressure relief ball 32 is pushed by the gas, and it returns to its original position under the action of the spring telescopic rod 31, tightly fitting the inner wall of the exhaust pipe 17 to ensure its internal sealing.

[0027] like Figure 4 As shown, a sealing plate 4 is fixedly connected to one end of the exhaust pipe 17. A groove 41 is provided at one end of the sealing plate 4. A protrusion 42 is fixedly connected to the outside of the pressure ball 32. The groove 41 corresponds to the protrusion 42. When the pressure ball 32 is pushed outward by the gas, the protrusion 42 follows the pressure ball 32 away from the groove 41. The sealing plate 4 seals the exhaust pipe 17 and the pressure ball 32 to prevent gas from flowing in and out from the gap. The protrusion 42 limits the pressure ball 32 to prevent the pressure ball 32 from having too much force, causing the pressure ball 32 to enter the exhaust pipe 17 and get stuck, thereby affecting the adjustment of the air pressure balance inside and outside the sealing cover 15.

[0028] like Figures 1 to 5 As shown, the inner wall of the sealing cover 15 is provided with a modified atmosphere box 5, which is fixedly connected to the sealing cover 15. The modified atmosphere box 5 inside the sealing cover 15 can convert oxygen into carbon dioxide, further reducing the oxygen content inside the sealing cover 15 and reducing the oxidation of tobacco leaves.

[0029] like Figures 1 to 5 As shown, the bottom of the sealing cover 15 is provided with a sealing ring 6, which is fixedly connected to the sealing cover 15. When the sealing cover 15 is closed, the bottom of the sealing cover 15 is in contact with the stacking platform 18, and there are bound to be some gaps. The sealing ring 6 fills these gaps and increases the airtightness of the sealing cover 15.

[0030] Working principle: First, the tobacco leaves requiring controlled atmosphere curing are stacked on the stacking platform 18. Then, cylinder 12 is activated, causing slider 13 to rise. Slider 13 drives connecting rod 14, changing its angle and causing sealing cover 15 to rotate on top plate 1. Finally, sealing cover 15 closes, sealing the stack. Nitrogen gas is then introduced through air inlet pipe 16, and air inside sealing cover 15 is discharged through exhaust pipe 17, achieving controlled atmosphere curing of the dried tobacco leaves. When curing is complete, cylinder 12 is activated again, causing slider 13 to press down. This, in turn, pushes sealing cover 15 with connecting rod 14, causing sealing cover 15 to rotate and open on top plate 1, sealing the stack. After the cover 15 opens outward, tobacco leaves on the stacking platform 18 can be collected, preparing for the next controlled atmosphere maintenance work. The opening and closing of the sealing cover 15 is achieved by the up-and-down movement of the cylinder 12, solving the problem of cumbersome disassembly and replacement of the tent, allowing for repeated use and reducing production costs. When the cylinder 12 drives the connecting rod 14 downward, the locking groove 2 and the locking block 21 engage with each other when the sealing cover 15 closes, tightly binding the sealing covers 15 together and increasing their stability. The locking groove 2 and the locking block 21 work together to first limit the movement of the sealing covers 15, guiding them to fit together tightly. The air intake pipe 16 is filled with nitrogen gas, which increases the internal pressure of the sealing cover 15. This causes oxygen to be forced out and dispersed through the exhaust pipe 17 to the outside of the sealing cover 15. As the pressure rises, oxygen enters the exhaust pipe 17, pushing the pressure relief ball 32 outwards, creating a gap between the ball and the exhaust pipe 17 to allow oxygen to escape. When the internal and external pressures are balanced, the pressure relief ball 32 experiences less gas thrust and returns to its original position under the action of the spring telescopic rod 31, tightly fitting against the inner wall of the exhaust pipe 17 to ensure its internal seal. When the pressure relief ball 32 is pushed outwards by the gas thrust, the protrusion 42 moves away with it. The groove 41 and the sealing plate 4 seal the space between the exhaust pipe 17 and the pressure ball 32 to prevent gas from flowing in and out through the gaps. The protrusion 42 limits the pressure ball 32 to prevent it from exerting too much force and getting stuck inside the exhaust pipe 17, which would affect the balance of air pressure inside and outside the sealing cover 15. The modified atmosphere box 5 inside the sealing cover 15 can convert oxygen into carbon dioxide, further reducing the oxygen content inside the sealing cover 15 and reducing the phenomenon of tobacco mold. When the sealing cover 15 is closed, the bottom of the sealing cover 15 is in contact with the stacking platform 18, and some gaps are inevitable. The sealing ring 6 fills these gaps and increases the airtightness inside the sealing cover 15.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bale sealing structure for controlled atmosphere storage, comprising a top sheet (1); characterised in that: The bottom of the top plate (1) is fixedly connected with a plurality of support columns (101), the bottom of the support column (101) is fixedly connected with a bottom plate (102), the top of the top plate (1) is fixedly connected with a support (11), the top of the support (11) is fixedly connected with a gas cylinder (12), the bottom of the gas cylinder (12) is fixedly connected with a sliding block (13), the sliding block (13) is slidingly connected with the top plate (1), the bottom of the sliding block (13) is hingedly connected with a plurality of connecting rods (14), the bottom of the connecting rod (14) is hingedly connected with a sealing cover (15), the sealing cover (15) is rotatably connected with the top plate (1), one of the sealing covers (15) is in communication with an air inlet pipe (16) on the outside, the top of the air inlet pipe (16) is provided with an air outlet pipe (17), the air outlet pipe (17) is in communication with the sealing cover (15), and the top of the bottom plate (102) is fixedly connected with a stacking table (18).

2. A pile seal for controlled atmosphere storage according to claim 1, wherein: The sealing cover (15) is provided with two clamping grooves (2) on one side, and the sealing cover (15) is fixedly connected with two clamping blocks (21) on the other side, the clamping grooves (2) correspond to the clamping blocks (21).

3. A clamped-seal structure for a CA storage pallet according to claim 2, wherein: The air outlet pipe (17) is fixedly connected with a fixing frame (3), one end of the fixing frame (3) is fixedly connected with a spring telescopic rod (31), one end of the spring telescopic rod (31) is fixedly connected with a pressure relief ball (32), and the pressure relief ball (32) is slidingly connected with the air outlet pipe (17).

4. A clamped structure for a CA storage pallet according to claim 3, characterized in that: One end of the air outlet pipe (17) is fixedly connected with a sealing plate (4), one end of the sealing plate (4) is provided with a groove (41), the outer side of the pressure relief ball (32) is fixedly connected with a protruding block (42), and the groove (41) corresponds to the protruding block (42).

5. A clamped structure for use in a CA storage pile according to claim 4, wherein: The inner wall of the sealing cover (15) is provided with a gas adjusting agent box (5), and the gas adjusting agent box (5) is fixedly connected with the sealing cover (15).

6. A clamped structure for a CA storage pallet according to claim 5, characterized in that: The bottom end of the sealing cover (15) is provided with a sealing ring (6), and the sealing ring (6) is fixedly connected with the sealing cover (15). The bottom end of the sealing cover (15) is provided with a sealing ring (6), and the sealing ring (6) is fixedly connected with the sealing cover (15).

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