Nitrogen filling tank

Abstract

The utility model discloses a nitrogen gas filling box relates to nitrogen gas filling technical field, including filling operation box and nitrogen buffer tank, the upper end fixedly connected with nitrogen buffer tank of filling operation box, the upper end intercommunication of nitrogen buffer tank has the gas inlet pipeline, the inside fixedly connected with first porous plate of nitrogen buffer tank, the inside fixedly connected with the flow guide baffle of nitrogen buffer tank, the bottom intercommunication of nitrogen buffer tank has the flow guide pipe. Through high -purity nitrogen gas with laminar flow state slowly, controllably through flow guide pipe and enter the filling operation box below, effectively with the air of the density in the box from the exhaust port and discharge, realize the efficient gas replacement, make it maintain a stable ultralow oxygen environment in the filling process, avoid the direct contact of the cosmetics and oxygen in the air, make the internal effective component be oxidized, reduce the cost, improve the quality of cosmetic filling.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen filling, and in particular to a nitrogen filling box. Background Technology

[0002] Most high-end cosmetic ingredients, such as vitamin C, retinol, some oils, and natural extracts, are quite reactive. In the traditional filling process, when the materials are exposed to air, oxygen will gradually come into contact with the product, causing the active ingredients to be oxidized, reducing or even completely losing their efficacy. This will cause the internal oils to become rancid, producing an odor and darkening the color, affecting product quality and shelf life, and reducing the user experience. Therefore, by using nitrogen to reduce the oxygen concentration in the filling environment, the quality of the filled products can be improved. However, while existing technologies include processes that inject nitrogen into the packaging container after filling, they cannot protect the material from contact with oxygen during the critical path from the storage tank to the filling head. Furthermore, some equipment uses nitrogen to fill the entire filling workshop, creating a nitrogen chamber, which is extremely costly and inflexible.

[0003] Therefore, this utility model provides a nitrogen filling box. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: A nitrogen filling box includes a filling operation box and a nitrogen buffer box. The nitrogen buffer box is fixedly connected to the upper end of the filling operation box. An inlet pipe is connected to the upper end of the nitrogen buffer box. A first perforated plate is fixedly connected inside the nitrogen buffer box. A flow guide baffle is fixedly connected inside the nitrogen buffer box. A flow guide pipe is connected to the bottom of the nitrogen buffer box. A main pipe is connected to the bottom of the flow guide pipe. A branch pipe is connected to the side end of the main pipe. A diffusion nozzle is connected to the lower end of the branch pipe. A second perforated plate is fixedly connected inside the filling operation box. An exhaust port is opened at the lower end of the filling operation box. An oxygen concentration sensor is installed inside the filling operation box. A glove box is installed on the side end of the filling operation box.

[0005] In a preferred embodiment, a support is fixedly connected inside the nitrogen buffer tank, and a forward diffuser is rotatably connected to the surface of the support, while a reverse diffuser is rotatably connected to the surface of the support.

[0006] The technical effect of adopting the above-mentioned further solution is that the gas introduced into the air inlet pipe is diffused.

[0007] In a preferred embodiment, a filling pipe is fixedly connected to the side end of the filling operation box, a rotary positioning shaft is fixedly connected to the side end of the filling pipe, and a positioning head is slidably fitted onto the inner wall of the rotary positioning shaft.

[0008] The technical effect of adopting the above-mentioned further solution is that the positioning head can be rotated to change the direction of the lower end.

[0009] In a preferred embodiment, a positioning ring is threaded onto the surface of the filling pipe, the inner wall of the positioning ring is slidably connected to the rotating positioning shaft, and a filling hose is provided inside the filling pipe and the positioning head.

[0010] The technical effect of adopting the above-mentioned further solution is that by setting it so that the direction of the cosmetic sprayed from the filling tube can be changed according to the needs, thus making filling more convenient.

[0011] In a preferred embodiment, a material conveying pipe is fixedly connected to the side end of the filling operation box, a sealing door is hinged to the inner wall of the material conveying pipe, a sealing ring is fixedly connected to the inner wall of the material conveying pipe, and the surface of the sealing door is slidably connected to the sealing ring.

[0012] The technical effect of adopting the above-mentioned further solution is that it reduces the amount of air entering the filling operation box from the material conveying pipe when the filling box is put in.

[0013] In a preferred embodiment, the bottom of the filling operation box is provided with a discharge port, and the bottom of the filling operation box is hinged with a movable door.

[0014] The technical effect of adopting the above-mentioned further solution is that the filled boxes can be transported out after filling.

[0015] In a preferred embodiment, the filling operation box is fixedly connected to a bottom ring via an exhaust port, and a valve is fixedly connected to the surface of the bottom ring. The valve is made of silicone.

[0016] The technical effect of adopting the above-mentioned further solution is that by setting a balanced air pressure in the filling operation box, and at the same time preventing the gas in the filling operation box from exchanging with the outside air through the exhaust port after the air inlet pipe stops introducing nitrogen, the oxygen concentration in the filling operation box can be quickly reduced during the next oxygen venting.

[0017] This utility model provides a nitrogen filling box, which has the following beneficial effects: High-purity nitrogen gas is slowly and controllably introduced into the filling operation chamber below through a guide pipe in a laminar flow state. This effectively removes the denser air inside the chamber from the exhaust port, achieving efficient gas replacement. This maintains a stable ultra-low oxygen environment during the filling process, preventing direct contact between the cosmetics and oxygen in the air, which would cause the active ingredients inside to oxidize. This reduces costs while improving the quality of cosmetic filling.

[0018] By using a valve to allow air to escape from the bottom and reset when the pressure difference is small, the gas pressure inside the filling operation chamber is balanced. This prevents the gas inside the filling operation chamber from exchanging with the outside air through the exhaust port after the nitrogen inlet pipe stops supplying nitrogen, thus increasing the oxygen concentration inside the filling operation chamber. This allows for a rapid reduction of the oxygen concentration inside the filling operation chamber during the next oxygen venting. Attached Figure Description

[0019] Figure 1 A three-dimensional structural diagram of a nitrogen filling box provided by this utility model; Figure 2 A schematic diagram of the filling pipe and related structures of a nitrogen filling box provided by this utility model; Figure 3 This utility model provides a nitrogen filling box. Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This utility model provides a nitrogen filling box. Figure 2 Enlarged structural diagram at point B; Figure 5 A schematic diagram of a material transport pipe and related structures for a nitrogen filling box provided by this utility model; Figure 6 This utility model provides a nitrogen filling box. Figure 5 Enlarged structural diagram at point C; Figure 7 This is a schematic diagram of the structure of a nitrogen filling box when the valve is open, which is provided for this utility model.

[0020] Explanation of reference numerals in the attached figures: 1. Filling control box; 2. Nitrogen buffer tank; 3. Inlet pipe; 4. First perforated plate; 5. Flow guide baffle; 6. Flow guide pipe; 7. Main pipe; 8. Diversion pipe; 9. Diffuser nozzle; 10. Second perforated plate; 11. Exhaust port; 12. Oxygen concentration sensor; 13. Glove box; 14. Support; 15. Forward diffuser blade; 16. Reverse diffuser blade; 17. Filling pipe; 18. Rotary positioning shaft; 19. Positioning head; 20. Positioning ring; 21. Filling hose; 22. Material conveying pipe; 23. Sealing door; 24. Sealing ring; 25. Discharge port; 26. Movable door; 27. Bottom ring; 28. Valve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, this utility model provides a technical solution: a nitrogen filling box, including a filling operation box 1 and a nitrogen buffer box 2. The nitrogen buffer box 2 is fixedly connected to the upper end of the filling operation box 1. The upper end of the nitrogen buffer box 2 is connected to an inlet pipe 3, which has a narrow upper and wide lower structure to allow the gas to undergo initial diffusion upon entry. A first perforated plate 4 is fixedly connected inside the nitrogen buffer box 2, and multiple flow guide baffles 5 are also fixedly connected inside the nitrogen buffer box 2 to reduce the gas flow velocity. A flow guide pipe 6 is connected to the bottom of the nitrogen buffer box 2, and a main pipe 7 is connected to the bottom of the flow guide pipe 6. A branch pipe 8 is connected to the side end of the main pipe 7, and a diffusion nozzle 9 is connected to the lower end of the branch pipe 8. This arrangement allows high-concentration nitrogen in the nitrogen buffer box 2 to be introduced into the filling operation box 1. A second perforated plate 10 is fixedly connected inside the filling operation box 1 to diffuse the gas and reduce its flow velocity. The filling operation box 1 has an exhaust port 11 at its lower end to expel air from the box. An oxygen concentration sensor 12 is installed inside the box to detect the oxygen concentration. A glove box 13 is installed on the side of the box to allow hands to be inserted for filling. High-purity nitrogen enters the nitrogen buffer box 2 through the inlet pipe 3 for sufficient buffering and diffusion, resulting in very stable and uniform pressure and flow rate. This stable nitrogen then flows slowly and controllably through the guide pipe 6 into the filling operation box 1 below in a laminar flow state. Due to the stable air intake, the denser air inside the box can be more effectively discharged from the exhaust port 11, achieving efficient gas replacement and maintaining a turbulent, stable, ultra-low oxygen environment during the filling process. This prevents the cosmetics from directly contacting oxygen in the air, which could cause oxidation of the internal active ingredients.

[0023] like Figure 1 - Figure 4As shown: A support 14 is fixedly connected inside the nitrogen buffer tank 2. A forward diffuser 15 is rotatably connected to the surface of the support 14. The outer circumference of the support 14 is equal to the inner circumference of the forward diffuser 15. A reverse diffuser 16 is rotatably connected to the surface of the support 14. The outer circumference of the support 14 is equal to the inner circumference of the reverse diffuser 16. When the gas passes through the forward diffuser 15 and the reverse diffuser 16, it drives the forward diffuser 15 and the reverse diffuser 16 to rotate, thereby diffusing out with the blades, avoiding air remaining in the corners of the nitrogen buffer tank 2, and reducing the gas flow speed.

[0024] like Figure 1 - Figure 4 As shown: A filling pipe 17 is fixedly connected to the side end of the filling operation box 1. A rotating positioning shaft 18 is fixedly connected to the side end of the filling pipe 17. A positioning head 19 is slidably attached to the inner wall of the rotating positioning shaft 18. The rotating positioning shaft 18 and the positioning head 19 are adapted to each other. Rotating the positioning head 19 with the rotating positioning shaft 18 as the center can change the direction of the lower end of the positioning head 19.

[0025] like Figure 1 - Figure 4 As shown: A positioning ring 20 is threadedly connected to the surface of the filling pipe 17. The filling pipe 17 and the positioning ring 20 are adapted to each other. The inner wall of the positioning ring 20 is slidably connected to the rotating positioning shaft 18. A filling hose 21 is provided inside the filling pipe 17 and the positioning head 19. When the positioning ring 20 is rotated, the positioning ring 20 squeezes the rotating positioning shaft 18, increasing the friction between the rotating positioning shaft 18 and the positioning head 19, thereby fixing the direction of the positioning head 19. This allows the direction of the cosmetic sprayed from the filling hose 21 to be changed according to the needs, making filling more convenient.

[0026] like Figure 1 , Figure 5 As shown: A material conveying pipe 22 is fixedly connected to the side end of the filling operation box 1. A sealing door 23 is hinged to the inner wall of the material conveying pipe 22. A sealing ring 24 is fixedly connected to the inner wall of the material conveying pipe 22. The surface of the sealing door 23 is slidably connected to the sealing ring 24. The inner circumference of the sealing ring 24 is smaller than the outer circumference of the sealing door 23. When the filling box is put into the filling box through the material conveying pipe 22, the sealing door 23 is squeezed open and automatically closes under the action of the hinge after the filling box passes through, thereby reducing the amount of air entering the filling operation box 1 from the material conveying pipe 22 when the filling box is put into the filling box.

[0027] like Figure 1 As shown: The bottom of the filling operation box 1 is provided with a discharge port 25 and a movable door 26 is hinged to the bottom of the filling operation box 1. When the filled box is placed on the movable door 26, the movable door 26 is opened by squeezing the movable door 26 and then automatically reset and closed by the hinge after the movable door 26 falls away.

[0028] like Figure 5 - Figure 7 As shown: The filling operation box 1 is fixedly connected to a bottom ring 27 via an exhaust port 11. A valve 28 is fixedly connected to the surface of the bottom ring 27. The valve 28 is made of silicone and is cone-shaped. When nitrogen is introduced into the filling operation box 1, the strong air pressure inside the filling operation box 1 causes the valve 28 to open outward, allowing air to be discharged from the bottom. When the pressure difference is small, the valve returns to its original position, balancing the air pressure inside the filling operation box 1. At the same time, this prevents the gas inside the filling operation box 1 from exchanging with the outside air through the exhaust port 11 after the air inlet pipe 3 stops introducing nitrogen. This allows for a rapid reduction of the oxygen concentration inside the filling operation box 1 during the next oxygen discharge.

[0029] Working principle: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in use, this type of nitrogen filling box first introduces high-purity nitrogen into the nitrogen buffer tank 2 through the inlet pipe 3. The gas diffuses through the forward diffuser 15 and the reverse diffuser 16, and its flow velocity is reduced by the first perforated plate 4 and the guide baffle 5, allowing the nitrogen to be fully buffered and diffused, resulting in very stable and uniform pressure and flow velocity. Subsequently, this stable nitrogen flows slowly and controllably through the guide pipe 6 into the filling operation box 1 below in a laminar flow state. Due to the stable air intake, the denser air inside the box can be more effectively discharged from the exhaust port 11, achieving efficient gas replacement and maintaining a stable ultra-low oxygen environment during the filling process, avoiding... This method avoids direct contact between cosmetics and oxygen in the air, preventing the oxidation of internal active ingredients. This reduces costs while improving the quality of cosmetic filling. When nitrogen is introduced into the filling operation box 1, the strong air pressure inside causes the valve 28 to open outwards, allowing air to escape from the bottom. When the pressure difference is small, the valve returns to its original position, balancing the air pressure inside the filling operation box 1. This also prevents the gas inside the filling operation box 1 from exchanging with the outside air through the exhaust port 11 after the air inlet pipe 3 stops introducing nitrogen. This increases the oxygen concentration inside the filling operation box 1, allowing for a rapid reduction in oxygen concentration during the next oxygen venting process and reducing venting costs.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A nitrogen filling box, comprising a filling operation box (1) and a nitrogen buffer box (2), characterized in that: The upper end of the filling operation box (1) is fixedly connected to a nitrogen buffer box (2), the upper end of the nitrogen buffer box (2) is connected to an air inlet pipe (3), the inside of the nitrogen buffer box (2) is fixedly connected to a first perforated plate (4), the inside of the nitrogen buffer box (2) is fixedly connected to a flow guide baffle (5), the bottom of the nitrogen buffer box (2) is connected to a flow guide pipe (6), the bottom of the flow guide pipe (6) is connected to a main pipe (7), the side end of the main pipe (7) is connected to a branch pipe (8), the lower end of the branch pipe (8) is connected to a diffusion nozzle (9), the inside of the filling operation box (1) is fixedly connected to a second perforated plate (10), the lower end of the filling operation box (1) is provided with an exhaust port (11), the inside of the filling operation box (1) is provided with an oxygen concentration sensor (12), and the side end of the filling operation box (1) is provided with a glove box (13).

2. A nitrogen filling box according to claim 1, characterized in that: The nitrogen buffer tank (2) is fixedly connected to a support (14), and a positive diffuser (15) is rotatably connected to the surface of the support (14), and a negative diffuser (16) is rotatably connected to the surface of the support (14).

3. A nitrogen filling box according to claim 1, characterized in that: The filling operation box (1) is fixedly connected to a filling pipe (17) on its side end, and a rotating positioning shaft (18) is fixedly connected to the side end of the filling pipe (17). A positioning head (19) is slidably attached to the inner wall of the rotating positioning shaft (18).

4. A nitrogen filling box according to claim 3, characterized in that: The surface of the filling pipe (17) is threaded with a positioning ring (20), the inner wall of the positioning ring (20) is slidably connected to the rotating positioning shaft (18), and the filling pipe (17) and the positioning head (19) are provided with a filling hose (21).

5. A nitrogen filling box according to claim 1, characterized in that: The filling operation box (1) is fixedly connected to a material conveying pipe (22) on its side. A sealing door (23) is hinged to the inner wall of the material conveying pipe (22). A sealing ring (24) is fixedly connected to the inner wall of the material conveying pipe (22). The surface of the sealing door (23) is slidably connected to the sealing ring (24).

6. A nitrogen filling box according to claim 1, characterized in that: The bottom of the filling operation box (1) is provided with a discharge port (25), and the bottom of the filling operation box (1) is hinged with a movable door (26).

7. A nitrogen filling box according to claim 1, characterized in that: The filling operation box (1) is fixedly connected to a bottom ring (27) through an exhaust port (11). A valve (28) is fixedly connected to the surface of the bottom ring (27). The valve (28) is made of silicone.

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