Vacuum moisture-proof composite packaging bag

Abstract

The utility model relates to the technical field of packaging, and discloses a vacuum moisture-proof composite packaging bag which comprises a bag body, an air inlet cylinder is fixedly installed on the surface of the bag body, a clamping cover is detachably connected to the surface of the air inlet cylinder in a clamped mode, a sealing mechanism is arranged in the air inlet cylinder, and the sealing mechanism is connected with the clamping cover in a clamped mode. A promoting mechanism is arranged in the air inlet cylinder, and the movable groove is formed in the air inlet cylinder. According to the vacuum damp-proof composite packaging bag, the exhaust pipe is inserted into the air inlet cylinder to exhaust air from the bag body, when air exhaust is finished and the exhaust pipe is pulled out of the air inlet cylinder, the reset spring resets to enable the sealing plug to block the air inlet of the air inlet cylinder, and meanwhile the guide rod guides the sealing plug to move, so that it is guaranteed that the sealing plug stably seals the air inlet; and meanwhile, the sliding ball can slide in the movable hole, so that the guide rod can conveniently move in the guide groove, it is guaranteed that the sealing plug stably conducts sealing, and then the sealing performance of the air inlet cylinder is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, specifically to a vacuum moisture-proof composite packaging bag. Background Technology

[0002] Food packaging bags refer to a packaging method in which products are placed in airtight packaging containers, the air inside the containers is removed, and the sealed containers achieve a predetermined vacuum degree. Vacuum bags, also known as depressurized packaging, remove all the air from the packaging containers and seal them, maintaining a high depressurization state inside the bag. The scarcity of air is equivalent to a low-oxygen effect, which prevents microorganisms from surviving, thus ensuring the freshness of fruits and vegetables and preventing spoilage.

[0003] According to a vacuum moisture-proof composite packaging bag disclosed in the public notice (Announcement No.: CN222272892U), the sealing column, ring, second spring, and limiting cavity set in the above application can seal the air inlet cylinder at the moment the air extraction tube is pulled out, thus achieving the effect of automatic sealing after the air extraction is completed.

[0004] However, in actual use, after the above-mentioned equipment is degassed, the degassing port is manually closed. There is a certain time difference between the time the degassing pipe is pulled out of the bag and the time the degassing port is closed. Therefore, when the degassing pipe is pulled out of the bag, air may enter the bag, causing the bag to not reach a vacuum state and affecting the airtightness of the bag. In view of this, we propose a vacuum moisture-proof composite packaging bag. Summary of the Invention

[0005] The purpose of this utility model is to provide a vacuum moisture-proof composite packaging bag to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vacuum moisture-proof composite packaging bag, comprising a bag body, an air inlet cylinder fixedly mounted on the surface of the bag body, a detachable cover snapped onto the surface of the air inlet cylinder, a sealing mechanism inside the air inlet cylinder, and a promoting mechanism inside the air inlet cylinder, the sealing mechanism comprising:

[0007] The movable groove is located inside the air intake cylinder. A return spring is fixedly connected to the lower end of the inner wall of the movable groove, and a sealing plug is fixedly connected to the end of the return spring away from the inside of the movable groove.

[0008] A guide groove is formed on the inner wall of the air intake cylinder. A guide rod is fixedly installed on the upper surface of the sealing plug. The arc surface of the guide rod has a movable hole, and a sliding ball is provided on the inner wall of the movable hole.

[0009] Preferably, the promoting mechanism includes a connecting rod, which is movably mounted on the upper surface of the guide rod, and a U-shaped rod is fixedly mounted on the upper surface of the connecting rod. The upper surface of the air inlet cylinder is provided with a promoting groove.

[0010] Preferably, the shape of the promoting groove is adapted to the shape of the spiral rod, and the number of promoting grooves is set to several, which are evenly arranged in a circumferential array on the upper surface of the air inlet cylinder.

[0011] Preferably, the shape of the guide rod is adapted to the shape of the guide groove, so that the guide rod can move inside the guide groove.

[0012] Preferably, the shape of the movable hole is adapted to the shape of the sliding ball, and the sliding ball is movably installed inside the movable hole, allowing the sliding ball to slide inside the movable hole.

[0013] Preferably, the number of reset springs is set to several, and the several reset springs are evenly distributed in a circumferential array and fixedly installed on the lower surface of the sealing plug to ensure the stable reset of the sealing plug for sealing the air inlet cylinder.

[0014] Compared with the prior art, this utility model provides a vacuum moisture-proof composite packaging bag, which has the following beneficial effects:

[0015] 1. This vacuum moisture-proof composite packaging bag features a sealing mechanism. An air extraction pipe is inserted into the air inlet cylinder to extract air from the bag. When the extraction is complete and the pipe is pulled out of the cylinder, a return spring resets, causing the sealing plug to block the air inlet. Simultaneously, a guide rod guides the sealing plug to move, ensuring a stable seal on the air inlet. A sliding ball slides within the movable hole, facilitating the movement of the guide rod within the guide groove, further ensuring a stable seal and guaranteeing the airtightness of the air inlet cylinder. This prevents the material inside the bag from becoming damp, improving the overall performance of the composite packaging bag.

[0016] 2. This vacuum moisture-proof composite packaging bag is equipped with a facilitating mechanism. The guide rod slides inside the guide groove, which drives the U-shaped rod on the connecting rod to move inside the facilitating groove. After sealing, the U-shaped rod can be rotated to limit the sealing plug on the surface of the air inlet cylinder, preventing the sealing plug from easily shaking due to the return spring sealing, which would lead to unstable sealing. This ensures the stability of the seal and improves the moisture-proof protection effect of the composite packaging bag. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a partial explosion diagram of the air intake cylinder of this utility model.

[0019] Figure 3 This is a partial cross-sectional schematic diagram of the air intake cylinder of this utility model;

[0020] Figure 4 This is a schematic cross-sectional view of the air intake section of the present invention.

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

[0022] Figure 6 This is a partial schematic diagram of the sealing mechanism of this utility model.

[0023] In the diagram: 1. Bag body; 2. Air inlet cylinder; 3. Sealing mechanism; 301. Return spring; 302. Sealing plug; 303. Movable groove; 304. Guide groove; 305. Movable hole; 306. Sliding ball; 307. Guide rod; 4. Promoting mechanism; 401. Connecting rod; 402. Retractable rod; 403. Promoting groove; 5. Cover. Detailed Implementation

[0024] like Figures 1-6 As shown, this utility model provides a technical solution: a vacuum moisture-proof composite packaging bag, including a bag body 1, an air inlet cylinder 2 fixedly installed on the surface of the bag body 1, a cover 5 detachably snapped onto the surface of the air inlet cylinder 2, a sealing mechanism 3 and a promoting mechanism 4 are provided inside the air inlet cylinder 2, and the sealing mechanism 3 includes a return spring 301, a sealing plug 302, a movable groove 303, a guide groove 304, a movable hole 305, a sliding ball 306, and a guide rod 307.

[0025] In one embodiment of this utility model, the movable groove 303 is formed inside the air intake cylinder 2. The lower end of the inner wall of the movable groove 303 is fixedly connected to the return spring 301. The end of the return spring 301 away from the interior of the movable groove 303 is fixedly connected to the sealing plug 302. The guide groove 304 is formed on the inner wall of the air intake cylinder 2. The upper surface of the sealing plug 302 is fixedly installed with the guide rod 307. The arc surface of the guide rod 307 is provided with a movable hole 305. The inner wall of the movable hole 305 is provided with a sliding ball 306.

[0026] Specifically, the bag body 1 is made of composite moisture-proof fabric, which ensures that the inside of the entire composite bag will not get damp when the goods are packed, thus improving the safety of the goods.

[0027] In addition, the promoting mechanism 4 includes a connecting rod 401, which is movably mounted on the upper surface of the guide rod 307. A U-shaped rod 402 is fixedly mounted on the upper surface of the connecting rod 401. A promoting groove 403 is provided on the upper surface of the air inlet cylinder 2. The shape of the promoting groove 403 is adapted to the shape of the U-shaped rod 402. A number of promoting grooves 403 are provided, and the number of promoting grooves 403 is evenly arranged in a circumferential array on the upper surface of the air inlet cylinder 2.

[0028] In this embodiment of the utility model, the shape of the guide rod 307 is adapted to the shape of the guide groove 304, so that the guide rod 307 can move inside the guide groove 304. The shape of the movable hole 305 is adapted to the shape of the sliding ball 306. The sliding ball 306 is movably installed inside the movable hole 305 and can slide inside the movable hole 305. A number of return springs 301 are provided. The return springs 301 are evenly distributed in a circumferential array and fixedly installed on the lower surface of the sealing plug 302 to ensure the stable reset of the sealing plug 302 to seal the air inlet cylinder 2. The surface of the air inlet cylinder 2 is provided with an air inlet. The shape of the air inlet is adapted to the protrusion on the upper surface of the sealing plug 302. A number of guide rods 307 are provided. The guide rods 307 are evenly distributed in a circumferential array and fixedly installed on the upper surface of the sealing plug 302 to guide the sealing plug 302 to seal the air inlet.

[0029] In this invention, during use, the suction pipe is inserted into the air inlet cylinder 2 to evacuate the bag body 1. When the evacuation is finished and the suction pipe is pulled out of the air inlet cylinder 2, the return spring 301 returns to its original position, causing the sealing plug 302 to block the air inlet of the air inlet cylinder 2. At the same time, the guide rod 307 guides the sealing plug 302 to move, thereby ensuring that the sealing plug 302 stably seals the air inlet. Meanwhile, the sliding ball 306 can slide inside the movable hole 305 to facilitate the movement of the guide rod 307 inside the guide groove 304, ensuring that the sealing plug 302 stably seals, thereby ensuring the airtightness of the air inlet cylinder 2.

[0030] Furthermore, the guide rod 307 slides inside the guide groove 304, causing the loop rod 402 on the connecting rod 401 to move inside the promoting groove 403. After sealing, the loop rod 402 can be rotated to limit the sealing plug 302 on the surface of the air inlet cylinder 2, preventing the sealing plug 302 from easily shaking when the return spring 301 is in place, thus ensuring the stability of the seal and securing the cover 5 to the surface of the air inlet cylinder 2.

[0031] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A vacuum moisture-proof composite packaging bag, comprising a bag body (1), wherein an air inlet cylinder (2) is fixedly installed on the surface of the bag body (1), and a cover (5) is detachably snapped onto the surface of the air inlet cylinder (2), characterized in that: The air intake cylinder (2) is provided with a sealing mechanism (3) and a promoting mechanism (4). The sealing mechanism (3) includes: The movable groove (303) is located inside the air inlet cylinder (2). A return spring (301) is fixedly connected to the lower end of the inner wall of the movable groove (303). A sealing plug (302) is fixedly connected to the end of the return spring (301) away from the interior of the movable groove (303). A guide groove (304) is formed on the inner wall of the air inlet cylinder (2). A guide rod (307) is fixedly installed on the upper surface of the sealing plug (302). A movable hole (305) is formed on the arc surface of the guide rod (307). A sliding ball (306) is provided on the inner wall of the movable hole (305).

2. The vacuum moisture-proof composite packaging bag according to claim 1, characterized in that: The promoting mechanism (4) includes a connecting rod (401), which is movably mounted on the upper surface of the guide rod (307). A spiral rod (402) is fixedly mounted on the upper surface of the connecting rod (401), and a promoting groove (403) is provided on the upper surface of the air inlet cylinder (2).

3. The vacuum moisture-proof composite packaging bag according to claim 2, characterized in that: The shape of the promoting groove (403) is adapted to the shape of the spiral rod (402). The number of promoting grooves (403) is set to several, and the several promoting grooves (403) are evenly arranged in a circular array on the upper surface of the air inlet cylinder (2).

4. The vacuum moisture-proof composite packaging bag according to claim 1, characterized in that: The shape of the guide rod (307) is adapted to the shape of the guide groove (304).

5. The vacuum moisture-proof composite packaging bag according to claim 1, characterized in that: The shape of the movable hole (305) is adapted to the shape of the sliding ball (306), and the sliding ball (306) is movably installed inside the movable hole (305).

6. The vacuum moisture-proof composite packaging bag according to claim 1, characterized in that: The number of reset springs (301) is set to several, and the several reset springs (301) are evenly distributed in a circumferential array and fixedly installed on the lower surface of the sealing plug (302).

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