Secondary inflation equipment for meat food packaging

Abstract

The utility model discloses secondary inflation equipment for meat food packaging, which relates to the technical field of food packaging equipment and comprises a workbench, a sealing mechanism and an inflation mechanism, an exhaust mechanism is arranged on the workbench, the inflation mechanism comprises an air pump, a filter, an air supply pipe, an adapter and an inflation nozzle, an air outlet of the air pump is communicated with the filter, and the air supply pipe is communicated with the filter. A first mounting hole and a second mounting hole which are communicated with each other are formed in the adapter, the filter is communicated and connected with the second mounting hole of the adapter through the air supply pipe, the air supply pipe is a rubber hose, and the charging connector is mounted in the first mounting hole and is in sliding connection with the adapter. Inert gases such as nitrogen and the like are filled into the large package again, so that the oxygen content in the package can be deeply reduced, the oxygen residual rate can be controlled at an extremely low level, the oxidative rancidity of grease in meat foods such as duck necks, chicken necks and the like is greatly slowed down, microorganism breeding is prevented, the color, flavor and taste of the foods are effectively maintained, and the quality guarantee period is greatly prolonged.

Description

Technical Field

[0001] This utility model relates to the field of food packaging equipment technology, specifically to a secondary inflation method for meat food packaging. Background Technology

[0002] In the meat processing industry, nitrogen filling is a common preservation method for products such as duck necks, chicken necks, chicken wings, and chicken feet. First, after initial processing, the product undergoes its first packaging step, during which nitrogen is injected into each small package to extend its shelf life and ensure its freshness and safety. However, with increasing market demand and stricter requirements for product transportation and storage, relying solely on nitrogen filling of individual packages is no longer sufficient to meet the demands.

[0003] To further enhance product preservation and reduce residual oxygen, multiple pre-inflated small packages are typically packed into a larger package in a second process, followed by refilling. This process aims to effectively reduce the oxygen content inside the larger package through secondary inflation (usually with an inert gas such as nitrogen), preventing food oxidation and spoilage while ensuring the safety and integrity of the smaller packages inside. However, traditional secondary inflation equipment suffers from problems such as incomplete gas coverage, high residual oxygen rates, and inability to flexibly adapt to different packaging sizes. These issues directly impact the quality of the final product and its market competitiveness. Furthermore, continuous leakage of inert gas lowers the oxygen content in the workshop environment, potentially causing discomfort to employees working in such conditions for extended periods. Therefore, a secondary inflation device for meat product packaging is needed to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a secondary gas filling device for meat food packaging, which has the advantages of efficient gas coverage, low oxygen residue rate and flexible adaptation to various packaging sizes, and solves the problems of incomplete gas filling, inconvenient operation and excessive exhaust gas leakage that affect the workshop environment of traditional equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a secondary inflation device for meat food packaging, comprising a workbench sealing mechanism and an inflation mechanism, wherein an exhaust mechanism is provided on the workbench;

[0006] The inflation mechanism includes an air pump, a filter, an air supply pipe, an adapter, and an inflation nozzle. The air outlet of the air pump is connected to the filter. The adapter has a first mounting hole and a second mounting hole that are interconnected. The filter is connected to the second mounting hole of the adapter through the air supply pipe, which is a rubber hose. The inflation nozzle is installed in the first mounting hole and slidably connected to the adapter. A sealing airbag is provided on the inner end face of the first mounting hole. A pressure regulating component that cooperates with the sealing airbag is provided on the upper end of the adapter.

[0007] As a preferred embodiment of the secondary inflation device for meat packaging according to this utility model, the pressure regulating component includes a sleeve, a piston, and a lead screw. The piston is installed inside the sleeve and slidably connected thereto. The bottom of the sleeve is connected in communication with the sealing airbag. The lead screw is installed on the top of the piston and threadedly connected to the sleeve.

[0008] As a preferred embodiment of the secondary inflation device for meat packaging according to this utility model, the inflation nozzle includes an interface, a shrink section, and a flat nozzle, wherein the interface and the flat nozzle are connected through the shrink section.

[0009] As a preferred embodiment of the secondary inflation device for meat packaging according to this utility model, the exhaust mechanism includes an exhaust hood, an exhaust pipe, and an exhaust fan. The exhaust fan is installed inside the exhaust hood, the top of the exhaust hood is provided with a fixing flange, the side end face of the exhaust hood is provided with an exhaust port that communicates with the exhaust pipe, and a filter screen is provided inside the exhaust port.

[0010] As a preferred embodiment of the secondary inflation device for meat packaging according to this utility model, the exhaust hood is provided with a trapezoidal guide hood, the top of the trapezoidal guide hood is provided with an air extraction port, and the exhaust fan is installed at the upper end of the air extraction port.

[0011] As a preferred embodiment of the secondary inflation device for meat packaging according to this utility model, the exhaust hood is provided with an inspection door at the end away from the exhaust pipe, and the inspection door is rotatably connected to the exhaust hood via a hinge.

[0012] As a preferred embodiment of the secondary inflation device for meat packaging according to this utility model, the inflation mechanism further includes a first cylinder and a slide table, the slide table being mounted on the telescopic shaft of the first cylinder, and the adapter being mounted on the slide table.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, by refilling the large packaging with inert gases such as nitrogen, can significantly reduce the oxygen content inside the packaging, controlling the residual oxygen rate to an extremely low level, far exceeding the effect of a single filling. This greatly slows down the oxidative rancidity of oils in meat products such as duck necks and chicken necks, prevents the growth of microorganisms, effectively maintains the color, flavor and taste of the food, and significantly extends the shelf life. For example, the shelf life of fresh duck necks, which originally had a short shelf life of 1-2 weeks with only one filling, can be extended to 1-2 months with a second filling, ensuring that the product remains fresh and safe throughout its shelf life.

[0015] 2. This utility model utilizes the contraction section and flat nozzle structure of the inflation nozzle. The airflow accelerates in the contraction section to form a high-speed jet, which can penetrate deep into the bottom of the packaging bag, effectively reducing the oxygen residue rate. The flat nozzle fits more closely to the opening of the packaging bag and can avoid puncturing the internal one-time inflation packaging. Combined with the pressure adjustment function of the sealing airbag of the pressure regulating component, it can quickly change inflation nozzles of different specifications to meet diverse packaging needs. At the same time, the slide driven by the first cylinder drives the inflation nozzle to gradually exit the packaging bag during the inflation process, further expelling the residual air in the bag and ensuring that the inert gas is fully filled. These structures work together to solve the problems of incomplete gas coverage, high oxygen residue, and inability to flexibly adapt to different packaging specifications in traditional inflation equipment.

[0016] 3. The exhaust mechanism of this utility model, through the combined design of an exhaust fan, a trapezoidal guide hood, and a filter screen, directionally extracts leaked inert gas to the waste gas treatment system, avoiding the impact of reduced oxygen content in the workshop on personnel health. The positive and negative pressure zones formed by the guide hood effectively intercept impurities in the gas, and the filter screen prevents impurities from entering the waste gas system. In addition, the design of the maintenance door simplifies the cleaning process inside the exhaust hood, and the pressure regulating component achieves rapid release and locking of the sealing airbag pressure through mechanical adjustment of the screw and piston, making the replacement of the air inlet and equipment cleaning more convenient. These structures effectively ensure the safety of the workshop working environment, while improving equipment maintenance efficiency and solving the problems of poor exhaust and complex maintenance of traditional equipment.

[0017] 4. The pressure regulating component of this utility model adjusts the clamping force of the sealing airbag on the inflation nozzle through the threaded engagement of the sleeve and the lead screw, which not only ensures the stable sealing of the inflation nozzle during inflation, but also allows for quick release of the limit when replacing it; the air supply pipe design of the rubber hose takes into account both the flexibility of the inflation mechanism and the stability of the air path. This dynamic sealing method solves the problems of easy air leakage and time-consuming replacement of parts in traditional fixed connections, and significantly improves the smoothness of equipment operation and sealing reliability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a side sectional view of the present invention;

[0020] Figure 3 This is a top view of the exhaust mechanism of this utility model;

[0021] Figure 4 For the present utility model Figure 3 Cross-sectional view of the middle section (BB);

[0022] Figure 5 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0023] Figure 6 This is a top view of the air inlet of this utility model;

[0024] Figure 7 For the present utility model Figure 5 Enlarged view of point C in the middle.

[0025] In the diagram: 1. Workbench; 2. Sealing mechanism; 201. Upper pressure bag assembly; 202. Lower pressure bag assembly; 3. Inflation mechanism; 301. Air pump; 302. Filter; 303. Air supply pipe; 304. First cylinder; 305. Slide table; 306. Adapter; 3061. First mounting hole; 3062. Second mounting hole; 307. Inflation nozzle; 3071. Interface; 3072. Shrink section; 3073. Flat nozzle; 308. Sealing airbag; 309. Pressure regulating assembly; 3091. Sleeve; 3092. Piston; 3093. Lead screw; 4. Exhaust mechanism; 401. Exhaust hood; 4011. Exhaust port; 4012. Filter screen; 402. Exhaust pipe; 403. Fixed flange; 404. Inspection door; 405. Exhaust fan; 406. Trapezoidal guide shroud; 4061. Air extraction port. Detailed Implementation

[0026] Please see Figures 1-7 A secondary inflation device for meat food packaging includes a workbench 1, a sealing mechanism 2 and an inflation mechanism 3, and an exhaust mechanism 4 is provided on the workbench 1.

[0027] The inflation mechanism 3 includes an air pump 301, a filter 302, an air supply pipe 303, an adapter 306, and an inflation nozzle 307. The air outlet of the air pump 301 is connected to the filter 302. The adapter 306 has a first mounting hole 3061 and a second mounting hole 3062 that are interconnected. The filter 302 is connected to the second mounting hole 3062 of the adapter 306 through the air supply pipe 303. The air supply pipe 303 is a rubber hose. The inflation nozzle 307 is installed... The adapter 306 is slidably connected in the first mounting hole 3061. A sealing airbag 308 is provided on the inner end face of the first mounting hole 3061. A pressure regulating component 309 that cooperates with the sealing airbag 308 is provided on the upper end of the adapter 306. The sealing mechanism 2 includes an upper pressure bag component 201 and a lower pressure bag component 202. The upper pressure bag component 201 and the lower pressure bag component 202 are used to press and fix the packaging tape during inflation, and heat and seal the bag opening of the inflated packaging bag.

[0028] After the meat products are inflated and sealed, multiple small bags are placed into the packaging bag, and then the large packaging bag is inflated and sealed. Inflation mechanism 3 inflates the bag, and sealing mechanism 2 seals the large packaging bag. Pressure regulating component 309 works with sealing airbag 308 to adjust the pressure of sealing airbag 308 on air nozzle 307. This allows the air nozzle 307 to be squeezed to fix and seal it when needed. When the air nozzle 307 needs to be replaced, the pressure of sealing airbag 308 can be reduced to release the limit on air nozzle 307 and quickly replace it.

[0029] Furthermore, the pressure regulating assembly 309 includes a sleeve 3091, a piston 3092, and a lead screw 3093. The piston 3092 is installed inside the sleeve 3091 and slidably connected thereto. The bottom of the sleeve 3091 is connected through to the sealing airbag 308. The lead screw 3093 is installed on the top of the piston 3092 and threadedly connected to the sleeve 3091.

[0030] By rotating the lead screw 3093 to adjust the height of the piston 3092, the air in the sleeve 3091 is forced into the sealing airbag 308, or the gas in the sealing airbag 308 is drawn into the piston 3092, thereby achieving the purpose of adjusting the air pressure of the sealing airbag 308 and realizing the quick fixing and unfixing of the inflation nozzle 307.

[0031] Furthermore, the inflation nozzle 307 includes an interface 3071, a retractable section 3072, and a flat nozzle 3073, with the interface 3071 and the flat nozzle 3073 being connected through the retractable section 3072.

[0032] Airflow enters the inflation nozzle 307 through interface 3071. When passing through the contraction section 3072, the airflow speed increases due to the smaller diameter, thereby increasing the range of the inert gas and enabling the gas to reach the bottom of the packaging bag, reducing the oxygen residue rate inside the packaging bag. The width of the flat nozzle 3073 of different specifications of inflation nozzle 307 is different. Replacing inflation nozzle 307 with different specifications can adapt to the inflation requirements of packaging bags of different sizes, making the width of the flat nozzle 3073 as close as possible to the width of the bag opening, reducing gas leakage. Moreover, the flat inflation nozzle 307 can effectively prevent the inflation nozzle 307 from puncturing the inner small packaging bag compared to the traditional needle-type inflation nozzle 307.

[0033] Furthermore, the exhaust mechanism 4 includes an exhaust hood 401, an exhaust pipe 402, and an exhaust fan 405. The exhaust fan 405 is installed inside the exhaust hood 401. A fixing flange 403 is provided on the top of the exhaust hood 401. An exhaust port 4011 communicating with the exhaust pipe 402 is provided on the side end face of the exhaust hood 401. A filter screen 4012 is provided inside the exhaust port 4011.

[0034] The leaked inert gas is drawn out by the exhaust fan 405 and discharged into the factory's waste gas treatment system through the exhaust pipe 402 to prevent the oxygen content in the processing workshop from continuously decreasing and causing discomfort to the employees. Impurities are intercepted by the filter screen 4012 to prevent them from entering the waste gas system.

[0035] Furthermore, a trapezoidal air guide 406 is provided inside the exhaust hood 401, and an air extraction port 4061 is provided on the top of the trapezoidal air guide 406. An exhaust fan 405 is installed on the upper end of the air extraction port 4061.

[0036] The trapezoidal guide shroud 406 isolates the exhaust shroud 401 into two areas, inner and outer. The exhaust fan 405 draws air, creating a positive pressure at the upper end of the trapezoidal guide shroud 406 and a negative pressure at the lower end. This allows gas to continuously enter the exhaust shroud 401 from the lower end, and impurities in the airflow are trapped inside the exhaust shroud 401 after impact and reflection.

[0037] Furthermore, an inspection door 404 is provided at the end of the exhaust hood 401 away from the exhaust pipe 402, and the inspection door 404 is rotatably connected to the exhaust hood 401 via a hinge.

[0038] The rotating access door 404 structure allows for cleaning of the interior of the exhaust hood 401 after the equipment has been shut down, improving the ease of equipment cleaning.

[0039] Furthermore, the inflation mechanism 3 also includes a first cylinder 304 and a slide 305. The slide 305 is mounted on the telescopic shaft of the first cylinder 304, and the adapter 306 is mounted on the slide 305.

[0040] The first cylinder 304 drives the slide 305 to move, which in turn drives the adapter 306 and the inflation nozzle 307 to move, allowing the inflation nozzle 307 to penetrate deep into the packaging bag for inflation, and then gradually slide out of the packaging bag to further reduce the oxygen content inside the packaging bag.

[0041] When using this equipment, after the meat products have been inflated and sealed once, multiple small bags are placed into a large packaging bag. First, the first cylinder 304 is activated. The first cylinder 304 moves the adapter 306 and the inflation nozzle 307 on the slide 305, causing the inflation nozzle 307 to penetrate deeper into the large packaging bag. At this time, the air pump 301 is activated. The gas output by the air pump 301 is filtered by the filter 302 and enters the second mounting hole 3062 of the adapter 306 through the rubber hose air supply pipe 303, and then passes through the first mounting hole 306. 1. The sliding inflator 307 enters the large packaging bag. Since the interface 3071 and the flat nozzle 3073 of the inflator 307 are connected through the contraction section 3072, the airflow speed increases as it passes through the contraction section 3072, increasing the range of the inert gas and allowing it to reach the bottom of the packaging bag, reducing the oxygen residue rate inside. After inflation, the first cylinder 304 drives the inflator 307 to gradually slide out of the packaging bag. During inflation, the sealing mechanism 2, through the upper pressure bag assembly 201 and the lower pressure bag assembly 202, seals the packaging strap during inflation. The bag is pressed and fixed, and the opening of the inflated packaging bag is heated and sealed. Simultaneously, the exhaust mechanism 4 continues to operate, and the exhaust fan 405 draws air from inside the exhaust hood 401. The top of the exhaust hood 401 is equipped with a fixing flange 403, and the exhaust port 4011 on the side end is connected to the exhaust pipe 402. The exhaust port 4011 contains a filter screen 4012. Leaked inert gas is discharged through the exhaust pipe 402 to the factory's waste gas treatment system, preventing a continuous decrease in oxygen content in the processing workshop. The filter screen 4012 intercepts impurities to prevent them from entering the waste gas system. The trapezoidal guide shroud 406 inside 01 isolates it into two areas, inner and outer. The exhaust fan 405 draws air to create positive pressure at the upper end of the trapezoidal guide shroud 406 and negative pressure at the lower end, promoting the entry of gas into the exhaust shroud 401. Impurities are trapped inside the exhaust shroud 401 after impact and reflection. If the inflation nozzle 307 needs to be replaced, the lead screw 3093 is rotated. The lead screw 3093 drives the piston 3092 to move upward, drawing the gas in the sealing airbag 308 into the piston 3092, reducing the pressure in the sealing airbag 308, releasing the limit on the inflation nozzle 307, and allowing for quick replacement.

[0042] Double-filling, by re-infusing inert gases such as nitrogen into the large packaging, can significantly reduce the oxygen content inside the packaging, keeping the residual oxygen level extremely low, far exceeding the effect of single-filling. This greatly slows down the oxidative rancidity of fats in meat products such as duck necks and chicken necks, prevents microbial growth, effectively maintains the color, flavor, and texture of the food, and significantly extends its shelf life. For example, the shelf life of fresh duck necks, which originally had a short shelf life of 1-2 weeks with single-filling, can be extended to 1-2 months with double-filling, ensuring that the product remains fresh and safe throughout its shelf life. From a production perspective, the excellent preservation effect reduces food losses due to spoilage. For example, large meat processing enterprises can lose millions of yuan annually due to food spoilage and waste. After adopting double-filling, the loss rate is reduced by 30%-50%, saving a significant amount of costs. At the same time, the extended product shelf life can reduce the frequency of production and logistics transportation, lowering overall operating costs. Double-filling demonstrates its advantages in various packaging scenarios. For products transported over long distances, this technology better withstands adverse factors such as vibration and temperature changes during transit, ensuring the product arrives at its destination with its original quality, thus helping the product expand into a wider market. For retail outlets, the number of smaller packages within a larger package can be flexibly adjusted according to sales speed and display needs. Furthermore, the secondary inflation process ensures that even if some smaller packages are sold first, the remaining product remains in good condition, meeting the needs of different sales scenarios. Products using this secondary inflation process present a fresher and more consistently high-quality image to consumers, helping companies establish a strong brand image and stand out in the highly competitive meat market. Consumer recognition of product quality translates into brand loyalty, boosting sales and increasing market share.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A secondary inflation device for meat product packaging, comprising a workbench (1), a sealing mechanism (2), and an inflation mechanism (3), characterized in that: The workbench (1) is equipped with an exhaust mechanism (4); The inflation mechanism (3) includes an air pump (301), a filter (302), an air supply pipe (303), an adapter (306), and an inflation nozzle (307). The air outlet of the air pump (301) is connected to the filter (302). The adapter (306) is provided with a first mounting hole (3061) and a second mounting hole (3062) that are connected to each other. The filter (302) is connected to the second mounting hole (3062) of the adapter (306) through the air supply pipe (303). The inflation nozzle (307) is installed in the first mounting hole (3061) and is slidably connected to the adapter (306). A sealing airbag (308) is provided on the inner end face of the first mounting hole (3061). A pressure regulating component (309) that cooperates with the sealing airbag (308) is provided on the upper end of the adapter (306).

2. The secondary inflation device for meat food packaging as described in claim 1, characterized in that: The pressure regulating assembly (309) includes a sleeve (3091), a piston (3092), and a lead screw (3093). The piston (3092) is installed inside the sleeve (3091) and slidably connected thereto. The bottom of the sleeve (3091) is connected through to the sealing airbag (308). The lead screw (3093) is installed on the top of the piston (3092) and threadedly connected to the sleeve (3091).

3. The secondary inflation device for meat food packaging as described in claim 1, characterized in that: The inflation nozzle (307) includes an interface (3071), a constriction section (3072), and a flat nozzle (3073), wherein the interface (3071) and the flat nozzle (3073) are connected through the constriction section (3072).

4. The secondary inflation device for meat food packaging as described in claim 1, characterized in that: The exhaust mechanism (4) includes an exhaust hood (401), an exhaust pipe (402), and an exhaust fan (405). The exhaust fan (405) is installed inside the exhaust hood (401). A fixing flange (403) is provided on the top of the exhaust hood (401). An exhaust port (4011) communicating with the exhaust pipe (402) is provided on the side end face of the exhaust hood (401). A filter screen (4012) is provided inside the exhaust port (4011).

5. The secondary inflation device for meat food packaging as described in claim 4, characterized in that: The exhaust hood (401) is provided with a trapezoidal air guide (406), and the top of the trapezoidal air guide (406) is provided with an air intake (4061). The exhaust fan (405) is installed at the upper end of the air intake (4061).

6. The secondary inflation device for meat food packaging as described in claim 5, characterized in that: An inspection door (404) is provided at the end of the exhaust hood (401) away from the exhaust pipe (402), and the inspection door (404) is rotatably connected to the exhaust hood (401) by a hinge.

7. The secondary inflation device for meat food packaging as described in claim 1, characterized in that: The inflation mechanism (3) further includes a first cylinder (304) and a slide (305), the slide (305) being mounted on the telescopic shaft of the first cylinder (304), and the adapter (306) being mounted on the slide (305).

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