Food vacuum packaging bag with one-way exhaust valve

Abstract

The utility model discloses a food vacuum packaging bag with a one-way exhaust valve, which relates to the technical field of vacuum packaging bags and comprises a packaging bag body, a sealing strip is mounted at the upper end of the packaging bag body, and a one-way exhaust valve component is mounted on the front side of the packaging bag body. The one-way exhaust valve assembly comprises a shell fixed to the front side of the packaging bag body, the one-way exhaust assembly is installed in the shell, and a sealing cover is installed on the front side of the shell. A sealing pressing piece is installed in the rear end of the shell, and a ring body is installed on the outer side of the rear end of the shell. According to the food vacuum packaging bag with the one-way exhaust valve, through cooperation between the one-way exhaust assembly and the sealing cover, one-way exhaust is achieved, air leakage is prevented, and under the action of the ring body, the sealing performance of the portion, connected with an air pump, of the sealing pressing piece is improved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum packaging bag technology, specifically a food vacuum packaging bag with a one-way exhaust valve. Background Technology

[0002] Packaging bags are bags used to package various products, making it convenient to transport and store goods during production and distribution. They are widely used in daily life and industrial production, and there are many types, such as vest bags, straight bags, stand-up pouches, square bottom bags, resealable bags, adhesive strip bags, and irregularly shaped bags. Among them, vacuum packaging bags, as a new type of packaging bag, are widely used for the sealed packaging of various foods.

[0003] However, traditional food vacuum packaging bags generally suffer from poor sealing when connected to a vacuum pump. Due to the simple and crude design of the sealing structure, it is difficult for the connection between the vacuum pump nozzle and the packaging bag to fit tightly, allowing air to easily leak from the gaps. This not only leads to low vacuuming efficiency, wasting a lot of time and energy, but also makes it difficult to achieve the ideal vacuum level. As a result, the food cannot obtain a good preservation environment and is easily spoiled due to oxidation, moisture, and microbial attack, affecting the quality of the food.

[0004] Therefore, we propose a food vacuum packaging bag with a one-way exhaust valve to solve the problems mentioned above. Utility Model Content

[0005] 1. The technical problem to be solved by the utility model:

[0006] The purpose of this invention is to provide a food vacuum packaging bag with a one-way exhaust valve to solve the problems currently found in the market as described in the background.

[0007] 2. Technical Solution:

[0008] To achieve the above objectives, the present invention provides the following technical solution: a food vacuum packaging bag with a one-way exhaust valve, comprising a packaging bag body, a sealing strip installed at the upper end of the packaging bag body, a one-way exhaust valve assembly installed on the front side of the packaging bag body, the one-way exhaust valve assembly comprising a housing fixed to the front side of the packaging bag body, a one-way exhaust assembly installed inside the housing, and a sealing cover installed on the front side of the housing;

[0009] A sealing and clamping component is installed inside the rear end of the housing, and a ring is installed on the outer side of the rear end of the housing.

[0010] Furthermore, the one-way exhaust assembly includes a valve nozzle fixed inside the housing, a fixing plate is installed inside the valve nozzle, and a plurality of vent holes are opened at equal angles inside the fixing plate, and a movable part is slidably installed inside the fixing plate.

[0011] The above technical solution enables exhaust through the vent holes.

[0012] Furthermore, the movable component includes a movable rod that is fitted and slidably installed inside the fixed plate, and a movable plate is fixed to the front end of the movable rod. A blocking block is fixed to the side of the movable plate corresponding to the vent hole. A pressure spring is sleeved on the outside of the movable rod, and the two ends of the pressure spring are respectively connected to the movable rod and the fixed plate. A rubber ring is installed on the side of the movable plate near the movable rod.

[0013] The above technical solution enables the external air pump to be connected to the valve nozzle. When the air pump is started, it can drive the moving parts to slide inside the fixed plate, thereby exposing the air vent.

[0014] Furthermore, the sealing cover includes an outer cover threaded onto the outside of the housing, and an inner column is rotatably mounted inside the outer cover. After the outer cover is installed on the housing, the inner column is pressed tightly against the end face of the movable plate.

[0015] The above technical solution ensures that after the outer cover is installed, the inner column is pressed tightly against the surface of the movable plate to prevent air leakage. At the same time, the rotating connection reduces wear on the movable plate.

[0016] Furthermore, the sealing and clamping component includes a pressure block slidably installed inside the housing. Several pressure blocks are distributed at equal angles about the center of the housing, and each pressure block has a pressure plate fixed on the side near the center of the housing. The sealing and clamping component also includes a sealing ring, which is fixedly connected to several pressure plates. A return spring is connected between the pressure plates and the housing, and the side of the pressure block near the ring is inclined.

[0017] The above technical solution enables several pressure plates to be squeezed towards the sealing ring when the pressure block is subjected to force.

[0018] Furthermore, the ring body includes a drive ring threaded onto the outside of the housing, and a compression ring is rotatably mounted on the front end of the drive ring. The drive ring rotates to drive the compression ring to displace and compress the pressure block.

[0019] The above technical solution enables the extrusion ring to move and extrude the pressure block when the drive ring rotates.

[0020] 3. Beneficial effects:

[0021] Compared with the prior art, the present invention provides a food vacuum packaging bag with a one-way exhaust valve. Through the cooperation between the one-way exhaust component and the sealing cap, one-way exhaust is achieved, preventing air leakage. Furthermore, the sealing and clamping component, under the action of the ring body, improves the sealing performance at the connection point with the vacuum pump. The specific details are as follows:

[0022] When vacuuming the packaging bag is required, remove the sealing cap, connect the air intake of the external vacuum pump to the valve, start the vacuum pump, and the movable rod overcomes the spring force of the pressure spring, causing the movable plate to move, so that the blocking block leaves the vent hole, allowing air to be discharged smoothly through the vent hole. After vacuuming is completed, the pressure spring pushes the movable rod and movable plate forward, and the blocking block re-blocks the vent hole, preventing external air from entering the packaging bag and achieving one-way exhaust function. Then, reinstall the sealing cap until the inner column is tightly pressed against the end face of the movable plate to improve stability and prevent air leakage.

[0023] When connecting the external air pump to the valve nozzle, insert the air pump's suction port into the housing. Then, rotate the drive ring. Since the drive ring and the housing are connected by threads, rotating the drive ring will cause the compression ring to apply pressure to the pressure block. After being compressed, the pressure block moves towards the sealing ring, ultimately causing the sealing ring to fit tightly against the surface of the air pump's suction nozzle, greatly improving the sealing performance of the connection with the air pump. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the explosion structure of the one-way valve of this utility model;

[0026] Figure 3 This is a cross-sectional view of the sealing cap of this utility model;

[0027] Figure 4 This is a schematic cross-sectional view of the shell structure of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the movable part of this utility model;

[0029] Figure 6 This is a front view structural diagram of the sealing and clamping component of this utility model.

[0030] In the diagram: 1. Packaging bag body; 2. Sealing strip; 3. Shell; 4. One-way exhaust assembly; 41. Valve nozzle; 42. Fixing plate; 43. Vent hole; 44. Moving part; 441. Moving plate; 442. Moving rod; 443. Pressure spring; 444. Blocking block; 445. Rubber ring; 5. Sealing cover; 51. Outer cover; 52. Inner column; 6. Sealing and clamping parts; 61. Pressure block; 62. Pressure plate; 63. Sealing ring; 64. Return spring; 7. Ring body; 71. Drive ring; 72. Compression ring. Detailed Implementation

[0031] To facilitate understanding of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example

[0035] Please see Figure 1-6A food vacuum packaging bag with a one-way exhaust valve includes a bag body 1, a sealing strip 2 installed at the upper end of the bag body 1, and a one-way exhaust valve assembly installed on the front side of the bag body 1. The one-way exhaust valve assembly includes a housing 3 fixed to the front side of the bag body 1, a one-way exhaust component 4 installed inside the housing 3, and a sealing cover 5 installed on the front side of the housing 3. The one-way exhaust component 4 includes a valve nozzle 41 fixed inside the housing 3, a fixing plate 42 installed inside the valve nozzle 41, and a plurality of vent holes 43 are equally spaced inside the fixing plate 42. A movable part 44 is slidably installed inside the fixing plate 42. The movable part 44 includes a sliding fitting. A movable rod 442 is installed inside the fixed plate 42, and a movable plate 441 is fixed to the front end of the movable rod 442. A blocking block 444 is fixed to the side of the movable plate 441 corresponding to the vent hole 43. A pressure spring 443 is sleeved on the outside of the movable rod 442. The two ends of the pressure spring 443 are respectively connected to the movable rod 442 and the fixed plate 42. A rubber ring 445 is installed on the side of the movable plate 441 near the movable rod 442. The sealing cover 5 includes an outer cover 51 threaded on the outside of the housing 3. An inner column 52 is rotatably installed inside the outer cover 51. After the outer cover 51 is installed on the housing 3, the inner column 52 is pressed tightly against the end face of the movable plate 441.

[0036] When vacuuming the packaging bag body 1 is required, first, rotate and remove the sealing cap 5. Then, connect the air intake of the external vacuum pump to the valve 41, start the vacuum pump, and the movable rod 442 overcomes the elastic force of the pressure spring 443, driving the movable plate 441 to move, so that the blocking block 444 leaves the vent 43, and the air inside the food vacuum packaging bag can be smoothly discharged through the vent 43. After vacuuming is completed, turn off the vacuum pump, and the pressure spring 443 pushes the movable rod 442 and the movable plate 441 forward, and the blocking block 444 re-blocks the vent 43 to prevent external air from entering the packaging bag, realizing the one-way exhaust function. Then, reinstall the sealing cap 5 until the inner column 52 is pressed tightly against the end face of the movable plate 441 to improve stability and prevent air leakage.

[0037] A sealing and clamping component 6 is installed inside the rear end of the housing 3, and a ring body 7 is installed on the outer side of the rear end of the housing 3. The sealing and clamping component 6 includes a pressure block 61 that is slidably installed inside the housing 3. Several pressure blocks 61 are distributed at equal angles about the center of the housing 3, and a pressure plate 62 is fixed on the side of each pressure block 61 near the center of the housing 3. The sealing and clamping component 6 also includes a sealing ring 63, which is fixedly connected to several pressure plates 62. A return spring 64 is connected between the pressure plates 62 and the housing 3, and the side of the pressure block 61 near the ring body 7 is inclined. The ring body 7 includes a drive ring 71 that is threaded onto the outer side of the housing 3. A compression ring 72 is rotatably installed at the front end of the drive ring 71. The drive ring 71 drives the compression ring 72 to move and compress the pressure block 61 by rotating.

[0038] When connecting the air intake port of the external air pump to the valve nozzle 41, insert the air intake port of the air pump into the housing 3. Then, rotate the drive ring 71. Since the drive ring 71 and the housing 3 are connected by threads, rotating the drive ring 71 will drive the compression ring 72 to apply pressure to the pressure block 61. After being compressed, the pressure block 61 moves towards the sealing ring 63, which ultimately causes the sealing ring 63 to fit tightly against the surface of the air pump nozzle, greatly improving the sealing performance of the connection with the air pump.

[0039] Working principle: When using a food vacuum packaging bag with a one-way exhaust valve, such as Figure 1-6 As shown, first, the sealing cap 5 is removed, then the air intake port of the external vacuum pump is inserted into the housing 3. Next, the drive ring 71 is rotated, causing the compression ring 72 to apply pressure to the pressure block 61. After being compressed, the pressure block 61 moves towards the sealing ring 63, causing the sealing ring 63 to tightly adhere to the surface of the vacuum pump nozzle, greatly improving the sealing performance of the connection with the vacuum pump. Then, the vacuum pump is started, and the movable rod 442 overcomes the elasticity of the pressure spring 443, causing the blocking block 444 to move away from the vent hole 43, allowing air to be smoothly discharged through the vent hole 43. After vacuuming is completed, under the action of the pressure spring 443, the blocking block 444 re-blocks the vent hole 43 to prevent external air from entering the packaging bag, achieving the function of one-way exhaust. Then, the sealing cap 5 is installed until the inner column 52 is tightly pressed against the end face of the movable plate 441, improving stability and preventing air leakage.

[0040] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0041] Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A food vacuum packaging bag with a one-way exhaust valve, characterized in that: Includes a packaging bag body (1), the upper end of which is equipped with a sealing strip (2), and a one-way exhaust valve assembly is installed on the front side of the packaging bag body (1). The one-way exhaust valve assembly includes a housing (3) fixed on the front side of the packaging bag body (1), a one-way exhaust assembly (4) is installed inside the housing (3), and a sealing cap (5) is installed on the front side of the housing (3). A sealing clamping member (6) is installed inside the rear end of the housing (3), and a ring (7) is installed outside the rear end of the housing (3).

2. A food vacuum packaging bag with a one-way exhaust valve according to claim 1, characterized in that: The one-way exhaust assembly (4) includes a valve nozzle (41) fixed inside the housing (3). A fixing plate (42) is installed inside the valve nozzle (41), and a number of ventilation holes (43) are opened at equal angles inside the fixing plate (42). A movable part (44) is slidably installed inside the fixing plate (42).

3. A food vacuum packaging bag with a one-way exhaust valve according to claim 2, characterized in that: The movable component (44) includes a movable rod (442) that is fitted and slidably installed inside the fixed plate (42), and a movable plate (441) is fixed to the front end of the movable rod (442), and a blocking block (444) is fixed to the side of the movable plate (441) corresponding to the vent hole (43). A pressure spring (443) is sleeved on the outside of the movable rod (442), and the two ends of the pressure spring (443) are respectively connected to the movable rod (442) and the fixed plate (42). A rubber ring (445) is installed on the side of the movable plate (441) near the movable rod (442).

4. A food vacuum packaging bag with a one-way exhaust valve according to claim 3, characterized in that: The sealing cover (5) includes an outer cover (51) threaded onto the outside of the housing (3), and an inner column (52) is rotatably installed inside the outer cover (51). After the outer cover (51) is installed on the housing (3), the inner column (52) is pressed tightly against the end face of the movable plate (441).

5. A food vacuum packaging bag with a one-way exhaust valve according to claim 1, characterized in that: The sealing and clamping component (6) includes a pressure block (61) that is slidably installed inside the housing (3). Several pressure blocks (61) are distributed at equal angles with respect to the center of the housing (3), and each pressure block (61) has a pressure plate (62) fixed on the side near the center of the housing (3). The sealing and clamping component (6) also includes a sealing ring (63), which is fixedly connected to several pressure plates (62). A return spring (64) is connected between the pressure plate (62) and the housing (3). The side of the pressure block (61) near the ring (7) is inclined.

6. A food vacuum packaging bag with a one-way exhaust valve according to claim 5, characterized in that: The ring body (7) includes a drive ring (71) threaded on the outside of the housing (3). A compression ring (72) is rotatably mounted on the front end of the drive ring (71). The drive ring (71) drives the compression ring (72) to move and compress the pressure block (61) by rotating.

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