Food vacuum packaging box

Abstract

The utility model relates to the technical field of food vacuum packaging, in particular to a food vacuum packaging box which comprises a box body, an air inlet pipe fixedly connected to the rear side of the right end of the box body, a third baffle fixedly connected to the left end of the air inlet pipe, a second rubber plug rotationally connected to the interior of the air inlet pipe, and a connecting rod fixedly connected to the right end of the second rubber plug. A box cover is rotatably connected to the rear side of the top end of the box body, an exhaust pipe is fixedly connected to the front side of the right end of the box body, a second baffle is fixedly connected to the right side in the exhaust pipe, a spring is fixedly connected to the left end of the second baffle, and a first rubber plug is fixedly connected to the left end of the spring; through design cooperation, when the box cover needs to be opened, the knob is rotated, the air groove in the outer side face of the second rubber plug is communicated with the air groove of the air inlet pipe, external air can enter the box body through the air grooves, the air pressure difference inside and outside the box body is reduced, the normal pressure state is rapidly recovered, the box cover is more convenient to open, and the use efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of food vacuum packaging, in particular to a food vacuum packaging box. Background Art

[0002] Vacuum packaging creates a low-oxygen or oxygen-free environment by pumping air out of the packaging container, so as to achieve the purpose of extending the shelf life of products, preventing oxidation and spoilage. It is widely used in the food industry, such as meat, fish, vegetables, fruits, snacks, etc.

[0003] Existing food vacuum packaging boxes usually have stronger structural stability and can better protect products. They can withstand external pressure, protect the internal items from damage, and the relatively regular structure is more stable during stacking and transportation, saving space and reducing damage during transportation.

[0004] However, in order to create a low-oxygen or oxygen-free environment to extend the freshness of food, the seal between the lid and the box body of existing vacuum packaging boxes is relatively strong to ensure that air cannot enter. After the air inside the box is pumped out, a negative pressure state is formed inside the box, creating a pressure difference with the external atmospheric pressure. This pressure difference causes the lid to be tightly pressed against the box body, resulting in difficulty in opening the vacuum box lid.

[0005] To solve the above problems, a food vacuum packaging box is proposed in this application. Content of the Utility Model

[0006] To solve the problems raised in the above background art, the utility model provides a food vacuum packaging box, which can adjust the air pressure inside and outside the box body through a second rubber plug.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme: A gas inlet pipe is fixedly connected to the rear side of the right end of the box body. A third baffle is fixedly connected to the left end of the gas inlet pipe. A second rubber plug is rotatably connected inside the gas inlet pipe. A connecting rod is fixedly connected to the right end of the second rubber plug. A knob is fixedly connected to the right end of the connecting rod. A box lid is rotatably connected to the rear side of the top of the box body. A gas extraction pipe is fixedly connected to the front side of the right end of the box body. A second baffle is fixedly connected to the right side inside the gas extraction pipe. A spring is fixedly connected to the left end of the second baffle. A first rubber plug is fixedly connected to the left end of the spring. A sliding rod is fixedly connected to the right end of the first rubber plug. A first baffle is fixedly connected to the left side inside the gas extraction pipe.

[0008] Preferably, as a food vacuum packaging box of the present utility model, the outer side of the first rubber plug contacts the inner side of the first baffle, the right end of the outer side of the sliding rod is slidably connected to the inner side of the second baffle, the outer side of the sliding rod contacts the inner side of the spring, and the left end of the second rubber plug contacts the third baffle. Through the designed cooperation, after the vacuum pump is docked with the air extraction pipe, the gas inside the box body is discharged through the air extraction pipe. When it is necessary to open the box cover, rotate the knob to make the air groove on the outer side of the second rubber plug communicate with the air groove of the air inlet pipe, and the outside air can enter the box body through the air groove, reducing the air pressure difference inside and outside the box body, quickly restoring the normal pressure state, making it more convenient to open the box cover, improving the use efficiency, and at the same time avoiding the sudden change of air pressure caused by improper operation, improving the use safety.

[0009] Preferably, as a food vacuum packaging box of the present utility model, air grooves are provided on the left side of the inner rear end of the air inlet pipe and the right side of the top of the second rubber plug, and the lengths of the air grooves of the air inlet pipe and the second rubber plug are both greater than half of the length of the air inlet pipe. By rotating the second rubber plug, the air groove on the outer side of the second rubber plug is communicated with the air groove of the air inlet pipe, and the outside air can enter the box body through the air groove, reducing the air pressure difference inside and outside the box body.

[0010] Preferably, as a food vacuum packaging box of the present utility model, the inner diameter of the air inlet pipe is the same as the outer diameter of the second rubber plug, and the right end of the air inlet pipe is flush with the right end of the second rubber plug. The left end of the third baffle is flush with the left end of the air inlet pipe, and the diameter of the third baffle is the same as the diameter of the second rubber plug, so that the outer side of the second rubber plug is closely attached to the inner wall of the air inlet pipe, ensuring the overall airtightness of the device, and at the same time avoiding the situation that the second rubber plug slides to the left and cannot be closely attached to the air inlet pipe due to the inconsistent air pressure inside and outside the box body.

[0011] Preferably, as a food vacuum packaging box of the present utility model, air holes are provided on the front and rear sides of the right end of the box body, and the diameter of the air hole on the front side of the right end of the box body is the same as the outer diameter of the air extraction pipe, and the diameter of the air hole on the rear side of the right end of the box body is the same as the outer diameter of the air inlet pipe. The gas inside the box body can be discharged through the air extraction pipe to form a vacuum, and the external air can enter the box body through the air inlet pipe to restore the normal pressure.

[0012] Preferably, as a food vacuum packaging box of the present utility model, a through hole is provided between the first baffle and the second baffle, and a sliding groove is provided on the inner wall of the through hole of the second baffle. The sliding rod is slidably connected to the inner wall of the sliding groove, so that the first rubber plug can only move left and right along with the sliding rod, avoiding the situation that the rubber plug cannot be in full contact with the hole on the first baffle due to external factors.

[0013] Preferably, as a food vacuum packaging box of the present utility model, the first rubber plug is in the shape of a frustum of a cone, and the diameter of the right end of the first rubber plug is larger than the diameter of the hole in the first baffle, while the diameter of the left end of the first rubber plug is smaller than the diameter of the hole in the first baffle. During the vacuum pumping process, the air pressure on the left side of the first baffle is greater than that on the right side, and the first rubber plug moves to the right under the action of the gas inside the box body, forming a passage inside and outside the box body. After pumping out the air inside the box body, the air pressure on the right side of the first baffle is greater than that on the left side, causing the first rubber plug to closely adhere to the first baffle, ensuring airtightness.

[0014] The present utility model has the following beneficial effects:

[0015] For the food vacuum packaging box designed by the present utility model, through the designed cooperation, after docking the vacuum pump with the air extraction pipe, the gas inside the box body is discharged through the air extraction pipe, realizing a vacuum environment inside the box body. When it is necessary to open the box cover, rotate the knob to connect the air groove on the outer side of the second rubber plug with the air groove of the air inlet pipe, and the outside air can enter the box body through the air groove, reducing the air pressure difference inside and outside the box body and quickly restoring the normal pressure state, making it more convenient to open the box cover, improving the use efficiency, and at the same time avoiding the sudden change of air pressure caused by improper operation and improving the use safety. Description of the Drawings

[0016] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the longitudinal sectional structural schematic diagram of the air extraction pipe of the present utility model;

[0019] Figure 3 is the exploded structural schematic diagram of the air extraction pipe of the present utility model;

[0020] Figure 4 is the transverse sectional structural schematic diagram of the air inlet pipe of the present utility model;

[0021] Figure 5 is the exploded structural schematic diagram of the air inlet pipe of the present utility model.

[0022] Legend Explanation:

[0023] 1. Box body; 2. Box cover; 3. Air extraction pipe; 4. Air inlet pipe; 5. Slide bar; 6. Spring; 7. First rubber plug; 8. First baffle; 9. Second baffle; 10. Second rubber plug; 11. Third baffle; 12. Connecting rod; 13. Knob. Detailed Embodiment

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] As Figures 1 to 5 shown;

[0027] A food vacuum packaging box includes a box body 1.

[0028] In this implementation scheme: As disclosed in the background technology above, "However, in order to create a low-oxygen or oxygen-free environment to extend the freshness of food, the existing vacuum packaging boxes have a strong seal between the box lid and the box body to ensure that air cannot enter. After the air inside the box is pumped out, a negative pressure state is formed inside the box, creating a pressure difference with the external atmospheric pressure. This pressure difference causes the box lid to be tightly pressed on the box body, resulting in the difficult opening of the vacuum box lid." In combination with this, this problem is obviously an existing and difficult-to-solve problem. In view of this, to solve this technical problem, an air inlet pipe 4 is added to this application document;

[0029] Furthermore:

[0030] As Figures 1 to 5 shown:

[0031] Combining the above content: A food vacuum packaging box includes a box body 1. The air inlet pipe 4 is welded and fixed to the rear side of the right end of the box body 1. The third baffle 11 is welded and fixed to the left end of the air inlet pipe 4. The second rubber plug 10 is rotatably connected inside the air inlet pipe 4. The connecting rod 12 is fixed to the right end of the second rubber plug 10 by a clamp. The knob 13 is welded and fixed to the right end of the connecting rod 12. The box lid 2 is rotatably connected to the rear side of the top of the box body 1 through a hinge. The air extraction pipe 3 is welded and fixed to the front side of the right end of the box body 1. The second baffle 9 is welded and fixed to the right side inside the air extraction pipe 3. The spring 6 is welded and fixed to the left end of the second baffle 9. The first rubber plug 7 is fixed to the left end of the spring 6 by a clamp. The sliding rod 5 is fixed to the right end of the first rubber plug 7 by a clamp. The first baffle 8 is welded and fixed to the left side inside the air extraction pipe 3. In an optional embodiment: The outer side of the first rubber plug 7 contacts the inner side of the first baffle 8. The right end of the outer side of the sliding rod 5 is slidably connected to the inner side of the second baffle 9. The outer side of the sliding rod 5 contacts the inner side of the spring 6. The left end of the second rubber plug 10 contacts the third baffle 11.

[0032] In this embodiment: Through design cooperation, after the vacuum pump is docked with the air extraction pipe 3, the gas inside the box body 1 is discharged through the air extraction pipe 3. When it is necessary to open the box cover 2, rotate the knob 13 to connect the air groove on the outer side of the second rubber plug 10 with the air groove of the air inlet pipe 4, and the outside air can enter the inside of the box body 1 through the air groove, reducing the air pressure difference inside and outside the box body 1, quickly restoring the normal pressure state, making it more convenient to open the box cover 2, improving the use efficiency, and at the same time avoiding the sudden change of air pressure caused by improper operation, improving the use safety.

[0033] In an alternative embodiment: Air grooves are provided on the left side of the rear end inside the air inlet pipe 4 and on the right side of the top of the second rubber plug 10, and the lengths of the air grooves of the air inlet pipe 4 and the second rubber plug 10 are both greater than half of the length of the air inlet pipe 4.

[0034] In this embodiment: By rotating the second rubber plug 10, the air groove on the outer side of the second rubber plug 10 is connected with the air groove of the air inlet pipe 4, and the outside air can enter the inside of the box body 1 through the air groove, reducing the air pressure difference inside and outside the box body 1.

[0035] In an alternative embodiment: The inner diameter of the air inlet pipe 4 is the same as the outer diameter of the second rubber plug 10, the right end of the air inlet pipe 4 is flush with the right end of the second rubber plug 10, the left end of the third baffle 11 is flush with the left end of the air inlet pipe 4, and the diameter of the third baffle 11 is the same as the diameter of the second rubber plug 10.

[0036] In this embodiment: The outer side of the second rubber plug 10 is closely attached to the inner wall of the air inlet pipe 4, ensuring the overall airtightness of the device, and at the same time avoiding the situation that the second rubber plug 10 slides to the left and cannot be closely attached to the air inlet pipe 4 due to the inconsistent air pressure inside and outside the box body 1.

[0037] In an alternative embodiment: Air holes are provided on the front and rear sides of the right end of the box body 1, and the diameter of the air hole on the front side of the right end of the box body 1 is the same as the outer diameter of the air extraction pipe 3, and the diameter of the air hole on the rear side of the right end of the box body 1 is the same as the outer diameter of the air inlet pipe 4.

[0038] In this embodiment: The gas inside the box body 1 can be discharged to form a vacuum through the air extraction pipe 3, and the outside air can enter the box body 1 through the air inlet pipe 4 to restore the normal pressure.

[0039] In an alternative embodiment: A through hole is provided between the first baffle 8 and the second baffle 9, and a sliding groove is provided on the inner wall of the through hole of the second baffle 9, and the sliding rod 5 is slidably connected to the inner wall of the sliding groove.

[0040] In this embodiment: The first rubber plug 7 can only move left and right along with the sliding rod 5, avoiding the situation that the rubber plug cannot be in full contact with the hole on the first baffle 8 due to external factors.

[0041] In an alternative embodiment: The first rubber plug 7 is frustum-shaped, the diameter of the right end of the first rubber plug 7 is larger than the diameter of the hole in the first baffle 8, and the diameter of the left end of the first rubber plug 7 is smaller than the diameter of the hole in the first baffle 8.

[0042] In this embodiment: During the vacuum pumping process, the air pressure on the left side of the first baffle 8 is greater than that on the right side. The first rubber plug 7 moves to the right under the action of the gas inside the box body 1, forming a passage between the inside and outside of the box body 1. After the air inside the box body 1 is pumped out, the air pressure on the right side of the first baffle 8 is greater than that on the left side, causing the first rubber plug 7 to closely adhere to the first baffle 8 to ensure airtightness.

[0043] The working principle and usage process of the present utility model: When in use, after connecting a vacuum pump or other equipment that can create a vacuum to the air extraction pipe 3, a pressure difference is formed on both sides of the first baffle 8. The gas inside the box body 1 pushes the first rubber plug 7 to move to the right, realizing the passage between the gas inside the box body 1 and the outside. The gas inside the box body 1 is discharged through the air extraction pipe 3. When the box body 1 is completely evacuated, since the right end of the first rubber plug 7 is provided with a slide bar 5, and the slide bar 5 fits tightly with the inner chute of the second baffle 9, the first rubber plug 7 moves horizontally to the left under the push of the spring 6 and fits with the inner side of the first baffle 8, realizing the sealing of the inside of the box body 1. When it is necessary to open the box cover 2, rotate the knob 13 to make the connecting rod 12 and the second rubber plug 10 rotate. Since the left end of the air inlet pipe 4 is provided with a third baffle 11, the second rubber plug 10 will not slide to the left due to the pressure difference between the inside and outside of the box body 1 during the rotation process. After the air grooves on the outer side of the second rubber plug 10 rotate, they are connected to the air grooves on the inner side of the air inlet pipe 4, and the outside air can enter the inside of the box body 1 through the air grooves, reducing the pressure difference between the inside and outside of the box body 1 and making it easier to open the box cover 2.

[0044] Finally, it should be noted that: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A food vacuum packaging box, comprising a box body (1), characterized in that: The right rear end of the box body (1) is fixedly connected to an air intake pipe (4), the left end of the air intake pipe (4) is fixedly connected to a third baffle (11), the interior of the air intake pipe (4) is rotatably connected to a second rubber stopper (10), the right end of the second rubber stopper (10) is fixedly connected to a connecting rod (12), the right end of the connecting rod (12) is fixedly connected to a knob (13), the top rear side of the box body (1) is rotatably connected to a box cover (2), the right front end of the box body (1) is fixedly connected to an exhaust pipe (3), the right side of the interior of the exhaust pipe (3) is fixedly connected to a second baffle (9), the left end of the second baffle (9) is fixedly connected to a spring (6), the left end of the spring (6) is fixedly connected to a first rubber stopper (7), the right end of the first rubber stopper (7) is fixedly connected to a sliding rod (5), and the left side of the interior of the exhaust pipe (3) is fixedly connected to a first baffle (8).

2. A food vacuum packaging box according to claim 1, characterized in that: The outer side surface of the first rubber stopper (7) contacts the inner side of the first baffle (8), the right end of the outer side surface of the slide rod (5) is slidably connected to the inner side of the second baffle (9), the outer side surface of the slide rod (5) contacts the inner side of the spring (6), and the left end of the second rubber stopper (10) contacts the third baffle (11).

3. A food vacuum packaging box according to claim 1, characterized in that: An air groove is provided on the left side of the rear end of the air intake pipe (4) and on the right side of the top end of the second rubber stopper (10), and the length of the air grooves of the air intake pipe (4) and the second rubber stopper (10) is greater than half the length of the air intake pipe (4).

4. A food vacuum packaging box according to claim 3, characterized in that: The inner diameter of the air intake pipe (4) is consistent with the outer diameter of the second rubber stopper (10), and the right end of the air intake pipe (4) is flush with the right end of the second rubber stopper (10); the left end of the third baffle (11) is flush with the left end of the air intake pipe (4), and the diameter of the third baffle (11) is consistent with the diameter of the second rubber stopper (10).

5. A food vacuum packaging box according to claim 1, characterized in that: The box body (1) is provided with air holes on both the front and rear sides of the right end, and the diameter of the air hole on the front side of the right end of the box body (1) is consistent with the outer diameter of the exhaust pipe (3), and the diameter of the air hole on the rear side of the right end of the box body (1) is consistent with the outer diameter of the intake pipe (4).

6. A food vacuum packaging box according to claim 1, characterized in that: A through hole is provided between the first baffle plate (8) and the second baffle plate (9), and a sliding groove is provided on the inner wall of the through hole of the second baffle plate (9), and the sliding rod (5) is slidably connected to the inner wall of the sliding groove.

7. A food vacuum packaging box according to claim 1, characterized in that: The first rubber stopper (7) is in the shape of a truncated cone, and the diameter of the right end of the first rubber stopper (7) is larger than the diameter of the hole of the first baffle (8), while the diameter of the left end of the first rubber stopper (7) is smaller than the diameter of the hole of the first baffle (8).

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