A device for vacuum packaging of mixed grains

Abstract

The utility model discloses a coarse grain packaging vacuumizing device belongs to packaging vacuumizing technical field, and the upper end other side of bottom plate is installed with lower layer filter jar through support, and the upper end of lower layer filter jar is connected with upper layer filter jar, and the lower end of lower layer filter jar is connected with two second connecting pipes, and one of second connecting pipes extends to the vacuum cavity of packaging vacuum bench, and the lateral wall of upper layer filter jar is connected with first connecting pipe, and first connecting pipe, second connecting pipe are connected with first vacuumizing connector, second vacuumizing connector through hose respectively, make upper layer filter jar, lower layer filter jar be the relay jar of vacuumizing. Vacuumizing equipment provides power, and gas filtration system adjusts airflow steady through relay jar, and multistage purification removes dust, moisture, peculiar smell, and the sealed design prevents pollution, and guarantees coarse grain packaging clean and safe. Clean gas reduces organism abrasion, and equipment stable operation prolongs life, and airflow detection instrument and valve cooperate and control, and improve system reliability.

Description

Technical Field

[0001] This utility model relates to the field of vacuum packaging technology, and in particular to a vacuum packaging device for grains. Background Technology

[0002] Grain packaging is primarily used to protect grains (such as millet, oats, beans, etc.) from moisture, pests, oxidation, etc., extending their shelf life and facilitating storage and transportation, while also serving a brand display function. Common packaging materials include plastic films (PE, PP), composite films (PET / PE, PA / PE, etc., with strong barrier properties), paper bags, and biodegradable materials; packaging formats include bags (stand-up pouches, three-side seal bags, back seal bags), cans (metal / plastic cans, suitable for high-end products), and boxes (cardboard boxes with inner linings), etc.

[0003] Vacuum sealing devices are key equipment in grain packaging. By removing air from the packaging to create a vacuum environment, they inhibit microbial growth, prevent oxidation and pests, further extending the shelf life of grains and reducing packaging volume. They mainly consist of a vacuum pump (the core component, responsible for evacuation), a vacuum chamber (containing the product to be packaged), a sealing mechanism (sealing the packaging after vacuuming), and a control system. The working principle is as follows: the filled packaging bag is placed in the vacuum chamber, the chamber is closed, the vacuum pump is activated to evacuate to the set vacuum level, the sealing mechanism heats and seals, and then the air is released and the chamber is opened to complete the packaging. Based on application scenarios, they can be categorized into small household machines (small batches), commercial desktop machines (small and medium-sized enterprises), vertical machines (efficient assembly line operations), and rolling machines (continuous large-scale production).

[0004] In practical applications, vacuum packaging devices for grains typically operate by directly placing the grain packages inside a vacuum chamber. First, a vacuum pump evacuates the air from the chamber to achieve a reduced pressure, followed by heat-sealing to seal the packaging. During the heat-sealing process, the packaging materials (such as plastic film or composite film) undergo thermal decomposition at high temperatures, easily releasing various toxic gases, including volatile organic compounds (VOCs) and benzene compounds. These toxic gases are directly discharged from the system with the airflow during vacuum extraction. However, due to the lack of effective gas filtration and treatment mechanisms in the device design, such as harmful gas adsorption or catalytic purification facilities, these toxic gases are released directly into the production workshop or surrounding atmosphere without any purification treatment. This not only causes air pollution but also poses a threat to the health of operators and has a long-term cumulative negative impact on the ecosystem, violating environmental protection requirements. Utility Model Content

[0005] The main objective of this invention is to provide a vacuum packaging device for grains, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A vacuum packaging device for grains includes a packaging vacuum stand, a base plate, a mounting base, a vacuum body, a first vacuum connector, and a second vacuum connector. The base plate is located at the inner bottom of the packaging vacuum stand, the vacuum body is mounted on the base plate via the mounting base, and the first and second vacuum connectors are mounted on the vacuum body. A lower filter tank is mounted on the other side of the upper end of the base plate via a bracket, and an upper filter tank is connected to the upper end of the lower filter tank. Two second connecting pipes are connected to the lower end of the lower filter tank, one of which extends into the vacuum chamber of the packaging vacuum platform. A first connecting pipe is connected to the side wall of the upper filter tank. The first and second connecting pipes are connected to the first and second vacuum connectors respectively via hoses, so that the upper and lower filter tanks are relay tanks for vacuuming. The upper and lower filter tanks are connected in sequence from top to bottom to a first filter cylinder, a second filter cylinder, and a third filter cylinder. Gas is filtered by passing through the first, second, and third filter cylinders. The side walls of the upper and lower filter tanks are connected to a ventilation device to achieve pressure balance and regulation within the two filter tanks.

[0007] In a further preferred embodiment, the base plate is bolted to the packaging vacuum platform, and the mounting base and the upper bracket of the lower filter tank are bolted to the base plate. The lower filter tank and the upper filter tank are connected by flanges, and a sealing ring is provided at the connection. The upper end of the upper filter tank is connected to a sealing cover by a flange, and a sealing ring is provided between the two. In a further preferred embodiment, the vacuum pump body is welded onto the mounting base, the first vacuum connector and the second vacuum connector are integrated with the vacuum pump body, and flanges are connected to the ports of the first vacuum connector and the second vacuum connector, which are connected to two flexible hoses through the flanges, and a sealing ring is provided at the connection. In a further preferred embodiment, the hose is connected to the first and second connecting pipes by clamps, and a sealing ring is provided at the connection. An instrument is installed on the first connecting pipe to detect airflow. The valve is a manual valve or an electrically controlled valve. In a further preferred embodiment, the first filter cylinder, the second filter cylinder, and the third filter cylinder are filled with different filter materials, and a filter screen is provided at the opening of the filter cylinder. The filter material includes any one or a mixture of glass fiber, polypropylene, polyester, activated carbon, molecular sieve, activated alumina, manganese dioxide metal oxide catalyst, and copper oxide metal oxide catalyst. In a further preferred embodiment, the ventilation device is designed in a "U" shape, with its two openings facing the filter cartridge, thereby achieving filtration through the filter cartridge.

[0008] Compared with the prior art, the present invention has the following beneficial effects: The vacuum equipment uses valves (manual / electric control) on the second connecting pipe to control the gas flow, adapting to different vacuuming needs; airflow detection instruments monitor the airflow status in real time to ensure stable system operation. As the power source for the vacuuming process, it can continuously extract gas from the vacuum chamber of the packaging vacuum stand, meeting the vacuuming requirements for grain packaging.

[0009] The gas filtration system features three-stage filter cartridges filled with different high-efficiency filter materials (glass fiber, polypropylene, etc.). Multi-stage filtration effectively removes dust, moisture, and odors from the gas, ensuring its cleanliness. The upper and lower filter tanks act as intermediate tanks to temporarily store gas, buffering airflow fluctuations and enhancing system stability. A venting device regulates the internal pressure balance of the filter tanks, preventing backflow or reduced filtration efficiency due to pressure differences. The openable sealing cover and flange connection design facilitate filter cartridge replacement and routine maintenance; high-strength filter screens at the filter cartridge inlets prevent material leakage, ensuring the effectiveness of the filter material.

[0010] The vacuum equipment provides power, and the gas filtration system regulates the airflow smoothly via a relay tank. Multi-stage purification removes dust, moisture, and odors, while a sealed design prevents contamination, ensuring clean and safe packaging for grains. Clean gas reduces wear and tear on the machine, and stable operation extends its lifespan. Airflow detection instruments and valves work together to improve system reliability. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the overall structure of this utility model; Figure 3 This is a top view of the overall structure of this utility model; Figure 4 This is a front sectional view of the filtration system of this utility model.

[0012] In the diagram: 1. Packaging vacuum stand; 2. Base plate; 3. Mounting base; 4. Vacuum pump body; 5. First vacuum connector; 6. Second vacuum connector; 7. Hoses; 8. First connecting pipe; 9. Second connecting pipe; 10. Vacuum valve; 11. Upper filter tank; 12. Lower filter tank; 13. First filter cartridge; 14. Second filter cartridge; 15. Third filter cartridge; 16. Ventilation device. Detailed Implementation

[0013] 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.

[0014] like Figure 1 - Figure 4As shown, a vacuum packaging device for grains includes a packaging vacuum stand 1, a base plate 2, a mounting base 3, a vacuum body 4, a first vacuum connector 5, and a second vacuum connector 6. The base plate 2 is located at the inner bottom of the packaging vacuum stand 1. The vacuum body 4 is mounted on the base plate 2 via the mounting base 3. The first vacuum connector 5 and the second vacuum connector 6 are mounted on the vacuum body 4. A lower filter tank 12 is mounted on the other side of the upper end of the base plate 2 via a bracket. The upper end of the lower filter tank 12 is connected to the upper filter tank 11 via a flange. The lower end of the lower filter tank 12 is connected to two second pipes 9, one of which extends into the vacuum chamber of the packaging vacuum stand 1. The side wall of the upper filter tank 11 is connected to a first pipe 8. The first pipe 8 and the second pipe 9 are connected to the first vacuum connector 5 and the second vacuum connector 6 via hoses 7, respectively, so that the upper filter tank 11 and the lower filter tank 12 together serve as relay tanks in the vacuuming process to temporarily store gas and enhance system stability. The upper filter tank 11 and the lower filter tank 12 are connected from top to bottom to a first filter cartridge 13, a second filter cartridge 14, and a third filter cartridge 15. The gas passes through the first filter cartridge 13, the second filter cartridge 14, and the third filter cartridge 15 in sequence to achieve multi-stage filtration, effectively removing dust, moisture, and odors. The side walls of the upper filter tank 11 and the lower filter tank 12 are connected to a ventilation device 16, which is used to achieve dynamic balance adjustment of the internal pressure of the two filter tanks to prevent airflow backflow or filtration efficiency reduction caused by pressure difference. The base plate 2 is fixedly installed on the packaging vacuum platform 1 by bolts. The mounting base 3 and the bracket of the lower filter tank 12 are also fixed on the base plate 2 by bolts. The lower filter tank 12 and the upper filter tank 11 are connected by flanges. A sealing ring is provided at the connection to ensure airtightness. The upper end of the upper filter tank 11 is connected to an openable sealing cover by flanges. A sealing ring is also provided between the two to facilitate the replacement of the filter cartridge and daily maintenance. The vacuum pump body 4 is welded onto the mounting base 3. The first vacuum connector 5 and the second vacuum connector 6 are integrated with the vacuum pump body 4, which has high structural strength and good sealing performance. The ports of the first vacuum connector 5 and the second vacuum connector 6 are connected to flanges and are connected to two hoses 7 through the flanges. A sealing ring is provided at the connection to ensure a firm connection and no leakage. The hose 7 is fastened to the first connector 8 and the second connector 9 by clamps. A sealing ring is provided at the connection to enhance the sealing effect. An airflow monitoring instrument is installed on the first connector 8 to monitor the airflow status in real time. A valve 10 is installed on the second connector 9. The valve 10 can be selected as a manual valve or an electric control valve according to actual needs to realize the on-off control of the air circuit. The first filter cylinder 13, the second filter cylinder 14, and the third filter cylinder 15 are each filled with different high-efficiency filter materials. A high-strength filter screen is provided at the opening of the filter cylinder to prevent material leakage. The filter material may include any one or more of glass fiber, polypropylene, polyester, activated carbon, molecular sieve, activated alumina, manganese dioxide metal oxide filter catalyst, and copper oxide metal oxide filter catalyst to meet the vacuuming and gas handling requirements of different grain packaging. The ventilation device 16 has a "U"-shaped design, with its two openings facing the air inlet and outlet directions of the filter cartridge. The filter cartridge filters the gas inside the ventilation device 16, thereby preventing external pollutants from entering the system while regulating the pressure, ensuring the cleanliness and safety of the grain packaging during the vacuuming process.

[0015] The base plate 2 is fixed to the inner bottom of the packaging vacuum stand 1 with bolts; the mounting base 3 and the bracket of the lower filter tank 12 are fixed to the base plate 2 with bolts; the vacuum body 4 is welded to the mounting base 3, and the flanges at the ports of the integrated first vacuum connector 5 and second vacuum connector 6 are connected to the two hoses 7 by sealing rings; the lower filter tank 12 and the upper filter tank 11 are connected by flanges (with sealing rings at the connection), and the upper end of the upper filter tank 11 is connected by a flange to an openable sealing cover (with sealing rings); the first filter cylinder 13 and the second filter cylinder 14 are installed sequentially from top to bottom inside the upper filter tank 11 and the lower filter tank 12. 4. Third filter cartridge 15 (with a high-strength filter screen at the opening); A ventilation device 16 ("U" shaped, with the opening facing the air inlet and outlet direction of the filter cartridge) is connected to the side wall of the lower filter tank 12; The first connecting pipe 8 on the side wall of the upper filter tank 11 is connected to the hose 7 via a clamp (with a sealing ring), and an airflow monitoring instrument is installed on the first connecting pipe 8; Of the two second connecting pipes 9 at the lower end of the lower filter tank 12, one extends to the vacuum chamber of the packaging vacuum stand 1, and the other is connected to the hose 7 via a clamp (with a sealing ring), and a valve 10 (manual / electric valve) is installed on the second connecting pipe 9; Check all flange and clamp connections for sealing rings / sealing rings to ensure airtightness.

[0016] Check that valve 10 is open, confirm that all connections are properly sealed, and that the airflow detection instrument is functioning correctly. Start the vacuum pump body 4. The gas in the vacuum chamber of the packaging vacuum stand 1 enters the lower filter tank 12 through the second connecting pipe 9 extending into the vacuum chamber. The gas passes through the third filter cylinder 15, the second filter cylinder 14, and the first filter cylinder 13 (filled with different high-efficiency filter materials) in sequence to achieve multi-stage filtration, removing dust, moisture, and odors. The filtered gas enters the vacuum pump body 4 through the first connecting pipe 8, the hose 7, and the first vacuum connector 5, and is discharged from the vacuum pump body 4. The ventilation device 16 dynamically adjusts the internal pressure balance of the upper filter tank 11 and the lower filter tank 12 to prevent backflow of air. The airflow detection instrument monitors the airflow status of the first connecting pipe 8 in real time, and valve 10 controls the airflow path opening and closing as needed. After vacuuming is completed, close the vacuum pump body 4 and valve 10.

[0017] Close the vacuum pump body 4 and the valve 10 on the second connecting pipe 9 to cut off the gas path; open the removable sealing cover at the top of the upper filter tank 11 (remove the flange connection bolts); take out the first filter cartridge 13, the second filter cartridge 14, and the third filter cartridge 15 in sequence, and check the high-strength filter screen at the cartridge opening and the internal filter material; clean the inner wall of the filter cartridge and the filter screen, and replace the failed filter material (such as glass fiber, polypropylene, etc.); put the cleaned / replaced first filter cartridge 13, second filter cartridge 14, and third filter cartridge 15 back into the upper filter tank 11 and the lower filter tank 12 in the original order; close the sealing cover and tighten the flange connection bolts (ensure that the sealing ring is compressed and the airtightness is good); open the valve 10, start the vacuum pump body 4, and confirm that the filtration system is operating normally and there is no leakage through the airflow monitoring instrument.

[0018] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A vacuum packaging device for grains, comprising a vacuum packaging platform (1), a base plate (2), a mounting base (3), a vacuum body (4), a first vacuum connector (5), a second vacuum connector (6), and a valve (10), wherein the base plate (2) is located at the inner bottom of the vacuum packaging platform (1), the vacuum body (4) is mounted on the base plate (2) via the mounting base (3), and the first vacuum connector (5) and the second vacuum connector (6) are mounted on the vacuum body (4), characterized in that: The lower filter tank (12) is mounted on the other side of the upper end of the base plate (2) by a bracket, and the upper end of the lower filter tank (12) is connected to the upper filter tank (11). The lower end of the lower filter tank (12) is connected to two second pipes (9), one of which extends into the vacuum chamber of the packaging vacuum stand (1). The side wall of the upper filter tank (11) is connected to a first pipe (8). The first pipe (8) and the second pipe (9) are connected to the first vacuum connector (5) and the second vacuum connector (6) respectively through a hose (7), so that the upper filter tank (11) and the lower filter tank (12) are relay tanks for vacuuming. The upper filter tank (11) and the lower filter tank (12) are connected from top to bottom to a first filter cylinder (13), a second filter cylinder (14), and a third filter cylinder (15). Gas is filtered by passing through the first filter cylinder (13), the second filter cylinder (14), and the third filter cylinder (15). The side walls of the upper filter tank (11) and the lower filter tank (12) are connected to a ventilation device (16) to achieve balanced adjustment of the pressure in the two filter tanks.

2. The vacuum packaging device for grains according to claim 1, characterized in that: The base plate (2) is bolted to the packaging vacuum stand (1). The mounting base (3) and the bracket of the lower filter tank (12) are bolted to the base plate (2). The lower filter tank (12) and the upper filter tank (11) are connected by flanges and a sealing ring is provided at the connection. The upper end of the upper filter tank (11) is connected to a sealing cover by a flange, and a sealing ring is provided between the two.

3. The vacuum packaging device for grains according to claim 2, characterized in that: The vacuum pump body (4) is welded onto the mounting base (3). The first vacuum connector (5) and the second vacuum connector (6) are designed as an integral part of the vacuum pump body (4). The ports of the first vacuum connector (5) and the second vacuum connector (6) are connected to flanges and connected to two hoses (7) through the flanges. A sealing ring is provided at the connection.

4. A vacuum packaging device for grains according to claim 3, characterized in that: The hose (7) is connected to the first connector (8) and the second connector (9) by clamps, and a sealing ring is provided at the connection. An instrument is installed on the first connector (8) to detect the airflow. The valve (10) is a manual valve or an electrically controlled valve.

5. A vacuum packaging device for miscellaneous grains according to claim 4, characterized in that: The first filter cylinder (13), the second filter cylinder (14) and the third filter cylinder (15) are filled with different filter materials, and the filter cylinder opening is provided with a filter screen. The filter material includes any one or a mixture of glass fiber, polypropylene, polyester, activated carbon, molecular sieve, activated alumina, manganese dioxide metal oxide catalyst, and copper oxide metal oxide catalyst.

6. A vacuum packaging device for grains according to claim 5, characterized in that: The ventilation device (16) is designed in a "U" shape, with the two openings of the ventilation device (16) facing the filter cylinder, and the filtration of the ventilation device (16) is achieved through the filter cylinder.

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