Sealing device for dairy product production

Abstract

The utility model discloses a sealing device for dairy product production, which relates to the field of dairy product sealing devices and comprises a frame, the top end of the frame is connected with a case, the bottom end of the case is connected with a corrugated pipe, a nitrogen conveying component leading to the inside of the corrugated pipe is arranged in the case, and a spring is connected in the corrugated pipe along the axis direction. The bottom end of the corrugated pipe is connected with a lifting table, one end of the lifting table is fixedly connected with a hollow exhaust pipe, the end, away from the exhaust pipe, of the lifting table is connected with a fixing pipe, the interior of the fixing pipe is hollow, the bottom end of the fixing pipe is slidably connected with a hollow telescopic pipe through a piston, and a one-way air valve blowing air downwards is arranged in the telescopic pipe. And the bottom end of the corrugated pipe is connected with the top end of the fixed pipe through an air guide pipe. According to the packaging bag, air in the packaging bag is replaced with nitrogen, oxygen absorbent does not need to be put into the packaging bag, and the quality guarantee period of dairy products in the packaging bag is effectively prolonged on the premise that the attractiveness degree of the packaging bag is not affected.

Description

Technical Field

[0001] The utility model relates to the field of dairy product sealing devices, in particular to a dairy product sealing device for production. Background Art

[0002] Dairy products refer to various foods that use cow's milk or goat's milk and their processed products as the main raw materials, with or without appropriate amounts of vitamins, minerals and other auxiliary materials, and are processed under the conditions required by laws, regulations and standards.

[0003] Solid products obtained from existing dairy processing, such as cheese and milk slices, are generally packaged and sold on a packaging table. After the workers weigh the dairy products and put them into packaging bags, they put the opened packaging bags on a conveyor belt. The packaging table moves on the conveyor belt and the top of the packaging table can be sealed when passing through a hot press sealing machine.

[0004] With regard to the above-mentioned related technologies, the existing packaging bags containing dairy products generally require oxygen absorbers to be placed in the packaging bags before sealing. After sealing, there is still a large amount of air in the packaging bags. Vacuum packaging of the packaging bags will squeeze the dairy products and affect the appearance of the dairy products. In summary, the existing sealing devices for packaging bags for dairy product production are not easy to discharge the air in the packaging bags without affecting the appearance of the packaging bags to achieve the purpose of extending the shelf life of the products. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a sealing device for dairy product production, so as to solve the technical problem that the existing sealing devices for packaging bags for dairy product production are difficult to discharge the air in the packaging bags without affecting the aesthetics of the packaging bags.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing device for dairy product production, comprising a frame, the top of the frame is connected to a chassis, the bottom of the chassis is connected to a bellows, and a nitrogen delivery component leading to the bellows is arranged inside, a spring is connected inside the bellows along the axial direction, the bottom end of the bellows is connected to a lifting platform, one end of the lifting platform is fixedly connected to a hollow exhaust pipe, and the end away from the exhaust pipe is connected to a fixed pipe, the fixed pipe is hollow inside and the bottom end is slidably connected to a hollow telescopic pipe through a piston, a one-way valve for blowing air downward is arranged in the telescopic pipe, the bottom end of the bellows is connected to the top of the fixed pipe through an air guide pipe, and the frame is provided with a sealing structure for sealing the packaging bag below the lifting platform.

[0007] By adopting the above technical solution, nitrogen is used to replace the air in the packaging bag, and there is no need to put oxygen absorbers into the packaging bag. Under the premise of not affecting the appearance of the packaging bag, the shelf life of dairy products in the packaging bag is effectively extended.

[0008] The utility model is further configured that two first telescopic boxes are fixedly connected between the frames below the lifting platform, and the two first telescopic boxes are slidably connected to each other with a pressing plate.

[0009] By adopting the above technical solution, the pressure plate structure moving in opposite directions between the first telescopic boxes is used to squeeze the bag opening of the packaging bag, so that after nitrogen is filled into the packaging bag, the air in the packaging bag can be blown out more efficiently, reducing the waste of nitrogen.

[0010] The utility model is further configured such that two semicircular notches are provided on opposite sides of the two pressing plates, the notches on the two pressing plates correspond to each other, and the corresponding notches on the two pressing plates can form a circle.

[0011] By adopting the above technical solution, the circle formed by the combination of the two semicircular notches can accommodate the exhaust pipe and the telescopic tube therein, effectively improving the air tightness at the bag opening during the process of nitrogen filling into the packaging bag, and effectively improving the rate of nitrogen filling into the packaging bag.

[0012] The utility model is further configured that two second telescopic boxes are fixedly connected between the frames below the lifting platform, and the two second telescopic boxes are slidably connected to each other with sealing plates.

[0013] By adopting the above technical solution, the bag opening of the packaging bag is heat-sealed by using the sealing plates moving in opposite directions.

[0014] The utility model is further configured such that the bottom end of the exhaust pipe can be lower than the bottom surface of the pressure plate when the bellows is extended, the fixed pipe does not contact the pressure plate when the bellows is extended, and the bottom end of the telescopic tube is lower than the bottom end of the exhaust pipe when the bellows is extended.

[0015] By adopting the above technical solution, the telescopic tube can be extended in the ventilated state to reach a lower position in the packaging bag, and then the air in the packaging bag can be better blown out in the ventilated state in the telescopic tube, and the air in the packaging bag is replaced with nitrogen, so that the air in the packaging bag is discharged from the packaging bag along the exhaust pipe.

[0016] The utility model is further configured such that the two pressing plates can contact each other after moving toward each other, and the diameter of the circle formed by the two corresponding notches in the contact state is equal to the diameter of the exhaust pipe and the telescopic pipe.

[0017] By adopting the above technical solution, when the pressure plates are close to each other, the circular notches formed between the notches can better accommodate and fit the exhaust pipe and the telescopic tube, effectively improving the air tightness of the exhaust pipe and the telescopic tube.

[0018] The utility model is further configured such that the height of the first telescopic box is higher than the height of the sealing structure.

[0019] By adopting the above technical solution, the pressure plate structure of the first telescopic box squeezes the packaging bag to fix the top of the package, while the sealing structure can seal the packaging bag, effectively improving the flatness of the sealing part of the packaging bag and reducing the probability of defective sealing of the packaging bag.

[0020] In summary, the utility model mainly has the following beneficial effects:

[0021] The utility model sets a frame structure installed on the product conveyor belt, uses the telescopic inflation component above the frame structure to fill nitrogen into the packaging bag, and seals the packaging bag immediately after the air in the packaging bag is exhausted, and uses nitrogen to replace the air in the packaging bag. There is no need to put an oxygen absorber into the packaging bag, and the shelf life of the dairy product in the packaging bag is effectively extended without affecting the aesthetics of the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the utility model;

[0023] Figure 2 For the utility model Figure 1 A magnified view of middle;

[0024] Figure 3 It is another perspective stereogram of the utility model;

[0025] Figure 4 This is a three-dimensional diagram of the lifting platform of the utility model in a lowered state;

[0026] Figure 5 It is a three-dimensional diagram of the lifting platform lowered after the first telescopic box and the second telescopic box on one side of the frame of the utility model are removed;

[0027] Figure 6 For the utility model Figure 5 Enlarged view of B.

[0028] In the figure: 1. frame; 2. chassis; 3. bellows; 4. lifting platform; 5. exhaust pipe; 6. fixed pipe; 7. telescopic pipe; 8. air guide pipe; 9. first telescopic box; 10. second telescopic box; 11. pressing plate; 12. notch; 13. sealing plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0030] The following describes an embodiment of the utility model based on its overall structure.

[0031] Embodiment 1

[0032] A sealing device for dairy product production, such as Figure 1-6 As shown, it includes a frame 1, which is fixedly installed on a conveyor belt for conveying dairy product packaging bags. The top of the frame 1 is connected to a chassis 2, the bottom of the chassis 2 is connected to a bellows 3, and a nitrogen delivery component leading to the bellows 3 is arranged inside. Specifically, the nitrogen delivery component in the chassis 2 adopts a nitrogen gas storage tank in the prior art, and the nitrogen in the gas storage tank is pumped into the bellows 3 by an air pump. A spring is connected to the bellows 3 along the axial direction. Specifically, the spring in the bellows 3 It plays a role in assisting the bellows 3 to reset. The bottom end of the bellows 3 is connected to a lifting platform 4. One end of the lifting platform 4 is fixedly connected to a hollow exhaust pipe 5, and the end away from the exhaust pipe 5 is connected to a fixed pipe 6. The fixed pipe 6 is hollow inside and the bottom end is connected to a hollow telescopic pipe 7 through a piston sliding. A one-way valve for blowing air downward is arranged in the telescopic pipe 7. The bottom end of the bellows 3 is connected to the top end of the fixed pipe 6 through an air guide pipe 8. The frame 1 is provided with a sealing structure for sealing the packaging bag below the lifting platform 4.

[0033] See also Figure 1-2 Two second telescopic boxes 10 are fixedly connected between the frames 1 below the lifting platform 4, and the two second telescopic boxes 10 are connected with sealing plates 13 in a sliding manner toward each other. Specifically, the sealing plates 13 adopt a mature heat sealing strip structure in the prior art. The two sealing plates 13 can move in opposite directions and make the heat sealing strips contact each other, and the bag opening of the packaging bag is heat-sealed by using the sealing plates 13 that move toward each other.

[0034] Embodiment 2

[0035] A sealing device for dairy product production, such as Figure 1-6As shown, on the basis of Example 1, the difference from Example 1 lies in that two first telescopic boxes 9 are fixedly connected between the frames 1 below the lifting platform 4, and the two first telescopic boxes 9 are connected with pressing plates 11 in a sliding manner in opposite directions. The pressing plates 11 structure that moves in opposite directions between the first telescopic boxes 9 is used to squeeze the bag mouth of the packaging bag, so that the air in the packaging bag can be blown out more efficiently after the nitrogen is filled into the packaging bag, thereby reducing the waste of nitrogen. Two pressing plates 11 are provided with two semicircular notches 12 on opposite sides, and the notches 12 on the two pressing plates 11 correspond to each other, and the corresponding notches 12 of the two pressing plates 11 can form a circle. The circle formed by the combination of the two semicircular notches 12 can accommodate the exhaust pipe 5 and the telescopic tube 7, thereby effectively improving the air tightness at the bag mouth during the process of nitrogen filling into the packaging bag, and effectively improving the rate at which nitrogen is filled into the packaging bag.

[0036] See also Figure 1-2 The height of the first telescopic box 9 is higher than the height of the sealing structure. When the pressure plate 11 of the first telescopic box 9 squeezes the packaging bag and fixes the top of the packaging, the sealing structure can seal the packaging bag, effectively improving the flatness of the sealing part of the packaging bag and reducing the probability of defective sealing of the packaging bag.

[0037] See also Figure 3-6 The two pressing plates 11 can contact each other after moving towards each other, and the circular diameter formed by the two corresponding notches 12 in the contact state is equal to the diameters of the exhaust pipe 5 and the telescopic tube 7, so that when the pressing plates 11 are close to each other, the circular notch formed between the notches 12 can better accommodate and fit the exhaust pipe 5 and the telescopic tube 7, effectively improving the air tightness at the exhaust pipe 5 and the telescopic tube 7.

[0038] See also Figure 2-6 When the bellows 3 is not extended, the telescopic tube 7 is in an unextended state. In this state, the bottom ends of the telescopic tube 7 and the exhaust pipe 5 are both higher than the top of the pressing plate 11 to avoid affecting the normal movement of the packaging bag on the conveyor belt. The bottom end of the exhaust pipe 5 can be lower than the bottom surface of the pressing plate 11 when the bellows 3 is extended. The fixed tube 6 does not contact the pressing plate 11 when the bellows 3 is extended. The bottom end of the telescopic tube 7 is lower than the bottom end of the exhaust pipe 5 when the bellows 3 is extended. The telescopic tube 7 can be extended to a lower position in the packaging bag when it is ventilated, and then the air in the packaging bag can be better blown out when the telescopic tube 7 is ventilated, and the air in the packaging bag is replaced by nitrogen, so that the air in the packaging bag is discharged from the packaging bag along the exhaust pipe 5.

[0039] The working principle of the utility model is as follows: when the packaging bag containing dairy products moves to the bottom of the chassis 2 on the conveyor belt, the nitrogen jet structure in the chassis 2 blows air into the bellows 3, and the bellows 3 stretches due to the increase of internal air pressure. The nitrogen flowing through the bellows 3 flows into the fixed tube 6 through the air guide tube 8. The air pressure in the fixed tube 6 suddenly increases, which can push the telescopic tube 7 to stretch downward and spray nitrogen downward. When the telescopic tube 7 stretches, the two first telescopic boxes 9 control the pressing plate 11 to move and squeeze the top of the packaging bag. The pressing plate 11 moves upward. The notches 12 form a circle to clamp the exhaust pipe 5 and the telescopic tube 7 across the packaging bag. At this time, the nitrogen blown into the packaging bag replaces the air inside the packaging bag, so that the air mixed with nitrogen is discharged from the exhaust pipe 5, and then the nitrogen supply structure in the chassis 2 reverses the air pumping, and the air pressure in the bellows 3 and the fixed tube 6 is reduced, so that the telescopic tube 7 is retracted into the fixed tube 6. At the same time, the bellows 3 contracts to cause the lifting platform 4 to rise. In this process, the sealing plates 13 move in opposite directions to complete the sealing of the packaging bag, so that the air in the packaging bag can be replaced and sealed conveniently.

[0040] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A sealing device for dairy product production, comprising a frame (1), characterized in that: The top of the frame (1) is connected to a case (2), the bottom of the case (2) is connected to a bellows (3), and a nitrogen delivery assembly leading to the bellows (3) is arranged inside the bellows (3), a spring is connected inside the bellows (3) along the axial direction, the bottom of the bellows (3) is connected to a lifting platform (4), one end of the lifting platform (4) is fixedly connected to a hollow exhaust pipe (5), and the end away from the exhaust pipe (5) is connected to a fixed pipe (6), the fixed pipe (6) is hollow inside and the bottom end is slidably connected to a hollow telescopic pipe (7) through a piston, a one-way valve for blowing air downward is arranged inside the telescopic pipe (7), the bottom end of the bellows (3) and the top end of the fixed pipe (6) are connected through an air guide pipe (8), and the frame (1) is provided with a sealing structure for sealing the packaging bag below the lifting platform (4).

2. The sealing device for dairy product production according to claim 1, characterized in that: Two first telescopic boxes (9) are fixedly connected between the frames (1) below the lifting platform (4), and the two first telescopic boxes (9) are slidably connected to each other with a pressing plate (11).

3. The sealing device for dairy product production according to claim 2, characterized in that: Two semicircular notches (12) are arranged on opposite sides of the two pressing plates (11); the notches (12) on the two pressing plates (11) correspond to each other, and the corresponding notches (12) on the two pressing plates (11) can form a circle.

4. The sealing device for dairy product production according to claim 1, characterized in that: Two second telescopic boxes (10) are fixedly connected between the frames (1) below the lifting platform (4), and the two second telescopic boxes (10) are slidably connected to each other with sealing plates (13).

5. The sealing device for dairy product production according to claim 3, characterized in that: The bottom end of the exhaust pipe (5) can be lower than the bottom surface of the pressure plate (11) when the bellows (3) is in an extended state; the fixed pipe (6) does not contact the pressure plate (11) when the bellows (3) is in an extended state; and the bottom end of the telescopic pipe (7) is lower than the bottom end of the exhaust pipe (5) when the bellows (3) is in an extended state.

6. The sealing device for dairy product production according to claim 3, characterized in that: The two pressing plates (11) can contact each other after moving towards each other, and the diameter of the circle formed by the two corresponding notches (12) in the contact state is equal to the diameter of the exhaust pipe (5) and the telescopic pipe (7).

7. The sealing device for dairy product production according to claim 2, characterized in that: The height of the first telescopic box (9) is higher than the height of the sealing structure.

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