Nitrogen protection device for powder cavity of powder-liquid double-chamber bag

Abstract

The utility model discloses a powder-liquid double-chamber bag powder cavity nitrogen protection device which comprises a bag opening assembly arranged at a bag opening station and used for opening a powder cavity of a powder-liquid double-chamber bag; the nitrogen charging assembly is arranged at the nitrogen charging station, and the nitrogen charging assembly is used for charging nitrogen into the powder cavity of the powder-liquid double-chamber bag; the sealing assembly is arranged at the sealing station, and the sealing assembly is used for sealing the nitrogen-filled powder-liquid double-chamber bag; the conveying assembly penetrates through the bag opening station, the nitrogen filling station and the sealing station, and the conveying assembly is used for sequentially moving the powder-liquid double-chamber bags from the bag opening station to the nitrogen filling station and the sealing station; the nitrogen cover wraps the bag opening station and the nitrogen filling station; and the nitrogen supply assembly communicates with the nitrogen cover and is used for introducing nitrogen into the nitrogen cover. According to the nitrogen protection device for the powder cavity of the powder-liquid double-chamber bag, the residual oxygen amount of a product can be reduced through the arrangement of the nitrogen cover, and the production quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical production equipment, and more specifically to a powder-liquid double-chamber bag powder cavity nitrogen protection device. Background Art

[0002] During the production process of powder-liquid double-chamber bags, the residual oxygen content of the protective gas in the powder cavity of the powder-liquid double-chamber bags is required to be less than 2%. At present, the bottom of the nitrogen hood of the nitrogen protection device of the powder-liquid double-chamber bag is wide open, and most of the nitrogen filled is scattered. Very little nitrogen actually enters the powder cavity, resulting in prolonged nitrogen filling time and serious nitrogen waste. In addition, in the existing technology, the nitrogen filling effect of the powder-liquid double-chamber bag is unstable. The powder-liquid double-chamber bag can easily be mixed with air during the nitrogen filling or transfer process, resulting in excessive residual oxygen content in the powder-liquid double-chamber bag. Once the residual oxygen content in the cavity is too high, it will cause the drug powder to denature, affecting the therapeutic effect. In addition, the method of inserting the inflation needle into the powder cavity will cause the drug powder to fly, and there will be drug powder residue in the welding sealing area, affecting the appearance of the bag and the welding sealing effect.

[0003] In summary, how to improve the quality of drug production is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a powder-liquid dual-chamber bag powder cavity nitrogen protection device, which is equipped with a completely wrapped nitrogen cover at the bag opening station and the nitrogen filling station. Nitrogen is introduced into the nitrogen cover through a nitrogen supply component, which can reduce the residual oxygen content and improve the quality of drug production.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A powder-liquid double-chamber bag powder cavity nitrogen protection device, comprising:

[0007] A bag opening assembly is provided at the bag opening station and is used to open the powder cavity of the powder-liquid dual-chamber bag;

[0008] A nitrogen filling component is provided at the nitrogen filling station, and is used to fill nitrogen into the powder cavity of the powder-liquid double-chamber bag;

[0009] A sealing assembly is provided at the sealing station, and is used to seal the powder-liquid double-chamber bag after being filled with nitrogen;

[0010] a transport assembly, which is arranged through the bag opening station, the nitrogen filling station and the sealing station, and is used to move the powder-liquid double-chamber bag from the bag opening station to the nitrogen filling station and the sealing station in sequence;

[0011] A nitrogen hood, wrapped around the bag opening station and the nitrogen filling station;

[0012] The nitrogen supply component is connected to the nitrogen hood and is used to introduce nitrogen into the nitrogen hood.

[0013] Preferably, the nitrogen charging assembly includes a frame, a guide shaft, a linear bearing, a connecting plate, a cylinder, a baffle and a push plate. The cylinder and the linear bearing are both arranged on the frame, the output end of the cylinder is connected to the connecting plate, and the connecting plate is connected to the push plate through the guide shaft. Two baffles are provided and are respectively arranged on both sides of the push plate.

[0014] Preferably, the transport assembly includes a guide rail and a clamp, the guide rail runs through the bag opening station, the nitrogen filling station and the sealing station, the clamp is arranged on the guide rail and can slide along the guide rail, and the clamp is used to clamp the powder-liquid double-chamber bag.

[0015] Preferably, a first gas distribution pipe and a second gas distribution pipe connected to the nitrogen supply assembly are provided at the top of the nitrogen hood, and a plurality of inflation heads are provided on the side of the first gas distribution pipe and the second gas distribution pipe facing the interior of the nitrogen hood.

[0016] Preferably, the first air distribution pipe is arranged directly above the guide rail, and the second air distribution pipe is arranged directly above the powder-liquid double-chamber bag.

[0017] Preferably, the bag opening assembly includes a bag opening machine and a bag opening suction cup. The bag opening suction cup is arranged at the output end of the bag opening machine. The bag opening assembly is provided with two and is respectively arranged on both sides of the transport assembly. The bag opening machine is used to drive the bag opening suction cup to move toward or away from the powder-liquid double-chamber bag.

[0018] Preferably, the sealing assembly includes a sealing machine and a sealing mold. The sealing mold is arranged at the output end of the sealing machine. The sealing assembly is provided with two and is respectively arranged on both sides of the transport assembly. The sealing machine is used to drive the sealing mold to move toward or away from the powder-liquid double-chamber bag.

[0019] Preferably, the bag further comprises a subpackaging assembly provided at a subpackaging station, wherein the subpackaging station is provided between the nitrogen filling station and the bag opening station, and the subpackaging assembly is used for injecting medicinal powder into the powder cavity of the powder-liquid double-chamber bag.

[0020] Preferably, the nitrogen hood is provided with a plurality of perforations, and the plurality of perforations are arranged corresponding to the guide rail, the subpackaging assembly, and the bag opening suction cup.

[0021] Preferably, it further comprises an operating plane, and the bag opening assembly, the nitrogen filling assembly, the sealing assembly, the transport assembly, the nitrogen hood and the nitrogen supply assembly are all arranged on the surface of the operating plane.

[0022] The utility model provides a powder cavity nitrogen protection device for a powder-liquid double-chamber bag, which comprises a bag opening component, a nitrogen filling component, a sealing component, a transport component, a nitrogen hood and a nitrogen supply component. The bag opening component can open the powder cavity of the powder-liquid double-chamber bag, and the powder-liquid double-chamber bag with the opened powder cavity is transported to the nitrogen filling component by the transport component. The powder cavity can be filled with nitrogen by the nitrogen filling component. The nitrogen hood is sleeved between the bag opening station and the nitrogen filling station, and the nitrogen supply component fills the nitrogen hood with nitrogen to ensure that the residual oxygen content of the powder-liquid double-chamber bag meets the requirements, thereby improving the production quality of medicines. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1 This is a schematic structural diagram of the powder-liquid double-chamber bag powder cavity nitrogen protection device provided by the utility model;

[0025] Figure 2 This is a schematic structural diagram of the nitrogen filling assembly and the transport assembly provided by the present invention when the baffle is in the initial position;

[0026] Figure 3 This is a schematic structural diagram of the nitrogen filling assembly and the transport assembly when the baffle provided by the present invention blocks both sides of the fixture;

[0027] Figure 4 This is a structural diagram of the gas distribution pipe provided by the utility model.

[0028] Reference numerals:

[0029] 1-Bag opening assembly; 101-Bag opening machine; 102-Bag opening suction cup;

[0030] 2-powder-liquid double chamber bag;

[0031] 3-nitrogen charging assembly; 301-frame; 302-guide shaft; 303-linear bearing; 304-connecting plate; 305-cylinder; 306-baffle; 307-push plate;

[0032] 4-sealing component; 401-sealing machine; 402-sealing mold;

[0033] 5-transportation component; 501-guide rail; 502-clamp;

[0034] 6-Nitrogen hood; 7-First gas distribution pipe; 8-Second gas distribution pipe; 9-Inflating head; 10-Subassembly assembly; 11-Operation plane. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] The core of the utility model is to provide a powder-liquid double-chamber bag powder cavity nitrogen protection device, which can reduce the residual oxygen content of the powder-liquid double-chamber bag and improve product quality.

[0037] It should be noted that the directions or positional relationships indicated by “upper”, “lower”, “front”, “back”, etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on this application.

[0038] The present application provides a powder-liquid dual-chamber bag powder cavity nitrogen protection device, comprising: a bag opening component 1, a nitrogen filling component 3, a sealing component 4, a transport component 5, a nitrogen hood 6 and a nitrogen supply component;

[0039] The bag opening assembly 1 is provided at the bag opening station, and is used to open the powder cavity of the powder-liquid dual-chamber bag 2;

[0040] The nitrogen filling component 3 is provided at the nitrogen filling station and is used to fill nitrogen into the powder cavity of the powder-liquid double chamber bag 2;

[0041] The sealing assembly 4 is provided at the sealing station and is used to seal the powder-liquid double-chamber bag 2 after being filled with nitrogen;

[0042] The transport component 5 is arranged through the bag opening station, the nitrogen filling station and the sealing station. The transport component 5 is used to move the powder-liquid double-chamber bag 2 from the bag opening station to the nitrogen filling station and the sealing station in sequence;

[0043] The nitrogen cover 6 is wrapped around the bag opening station and the nitrogen filling station;

[0044] The nitrogen supply assembly is connected to the nitrogen hood 6 and is used to introduce nitrogen into the nitrogen hood 6.

[0045] For details, please refer to the attached Figure 1, on the same plane, a bag-opening station, a nitrogen-filling station and a sealing station are arranged in sequence. A bag-opening component 1, a nitrogen-filling component 3 and a sealing component 4 are respectively installed on the bag-opening station, the nitrogen-filling station and the sealing station. A nitrogen hood 6 is arranged between the bag-opening station and the nitrogen-filling station. Sufficient nitrogen is introduced into the nitrogen hood 6 through a nitrogen supply component, so that the nitrogen hood 6 is filled with sufficient nitrogen. During the whole process of opening the bag and filling nitrogen in the powder-liquid double-chamber bag 2, it is in an environment full of nitrogen, so as to greatly reduce the residual oxygen content in the powder-liquid double-chamber bag 2. When the residual oxygen content is qualified, the powder-liquid double-chamber bag 2 is sealed through the sealing component 4 to improve the production quality.

[0046] On the basis of the above embodiment, the nitrogen-filling component 3 includes a frame 301, a guide shaft 302, a linear bearing 303, a connecting plate 304, a cylinder 305, a baffle 306 and a push plate 307. The cylinder 305 and the linear bearing 303 are both arranged on the frame 301. The output end of the cylinder 305 is connected to the connecting plate 304. The connecting plate 304 is connected to the push plate 307 through the guide shaft 302. There are two baffles 306 which are respectively arranged on both sides of the push plate 307.

[0047] Specifically, please refer to the appendix Figure 2 And the appendix Figure 3 , the frame 301 can support the other parts of the nitrogen-filling component 3. The frame 301 is a connecting part of a pillar and a box body. The cylinder 305 is arranged on the upper surface of the frame 301. The linear bearing 303 is arranged on the side surface of the frame 301 facing the transportation component 5. The output end of the cylinder 305 is arranged on the side背离 the transportation component 5. The output end of the cylinder 305, the connecting plate 304 and the guide shaft 302 form a U-shaped structure. The guide shaft 302 passes through the linear bearing 303 and is arranged on the side surface of the frame 301. The end of the guide shaft 302背离 the connecting plate 304 is connected to the push plate 307. The push plate 307 is connected to the two baffles 306. Both of the two baffles 306 are arranged in the vertical direction. When the cylinder 305 is in the initial state, the baffle 306 is close to the cylinder. When the powder-liquid double-chamber bag 2 reaches the nitrogen-filling station, the cylinder 305 can contract,带动 the baffle 306 to block on both sides of the powder-liquid double-chamber bag 2, and during the nitrogen-filling process, the powder-liquid double-chamber bag 2 can be completely immersed in the nitrogen environment. It should be noted that due to the existence of the transportation component 5, that is, the guide rail 501, a groove needs to be set on the baffle 306. The furthest distance that the baffle 306 can move to the left is when the guide rail 501 is embedded in the groove on the baffle 306. At this time, the speed of introducing nitrogen into the nitrogen hood 6 can be appropriately increased to reduce the residual oxygen content.

[0048] On the basis of the above embodiment, the transportation component 5 includes a guide rail 501 and a fixture 502. The guide rail 501 runs through the bag-opening station, the nitrogen-filling station and the sealing station. The fixture 502 is arranged on the guide rail 501 and can slide along the guide rail 501. The fixture 502 is used for clamping the powder-liquid double-chamber bag 2.

[0049] Specifically, the guide rail 501 is arranged horizontally and parallel to the push plate 307. The clamp 502 can clamp the powder-liquid double-chamber bag 2 from the upper and lower ends. There are multiple clamps 502, and the multiple clamps 502 are evenly distributed along the guide rail 501. The movement frequency of the guide rail 501 corresponds to the working frequency of the bag opening component 1, the nitrogen filling component 3 and the sealing component 4. The movement distance of the clamp 502 each time is also limited. The stop position of the clamp 502 each time should be the nitrogen filling station and the sealing station to ensure that the clamp 502 can perform the corresponding operation after each movement stops.

[0050] Based on the above embodiment, the top of the nitrogen hood 6 is provided with a first gas distribution pipe 7 and a second gas distribution pipe 8 connected to the nitrogen supply assembly, and a plurality of inflation heads 9 are provided on the side of the first gas distribution pipe 7 and the second gas distribution pipe 8 facing the inside of the nitrogen hood 6.

[0051] For details, please refer to the attached Figure 1 With attached Figure 4 The first gas distribution pipe 7 and the second gas distribution pipe 8 are both arranged at the upper end of the nitrogen hood 6. The first gas distribution pipe 7 and the second gas distribution pipe 8 are both rectangular hollow shells. A plurality of inflation heads 9 are provided on the lower end surfaces of the first gas distribution pipe 7 and the second gas distribution pipe 8. The nitrogen supply assembly is connected to the joints on the upper surfaces of the first gas distribution pipe 7 and the second gas distribution pipe 8 and a sufficient amount of nitrogen is introduced into the interior thereof. The nitrogen is introduced into the nitrogen hood 6 through the inflation heads 9 to ensure that the nitrogen can fully and evenly fill the nitrogen hood 6 gradually from the top of the nitrogen hood 6, and discharge the oxygen inside the nitrogen hood 6 to reduce the oxygen content in the production environment.

[0052] On the basis of the above embodiment, the first air distribution pipe 7 is arranged directly above the guide rail 501 , and the second air distribution pipe 8 is arranged directly above the powder-liquid double-chamber bag 2 .

[0053] For details, please refer to the attached Figure 1 The first gas distribution pipe 7 is arranged along the guide rail 501, and nitrogen is introduced into the nitrogen hood 6 through the first gas distribution pipe 7. The first gas distribution pipe 7 will not affect the packaging of the powder-liquid double-chamber bag 2. After the powder-liquid double-chamber bag 2 is completed, the nitrogen introduced by the second gas distribution pipe 8 can further deoxygenate the powder-liquid double-chamber bag 2, reduce the residual oxygen content, and improve the production quality. It should be noted that the inflation head 9 on the second gas distribution pipe 8 will not be inserted into the powder-liquid double-chamber bag 2, will not cause powder splashing, and can also improve the quality of the product.

[0054] Based on the above embodiment, the bag opening component 1 includes a bag opening machine 101 and a bag opening suction cup 102. The bag opening suction cup 102 is arranged at the output end of the bag opening machine 101. The bag opening component 1 is provided with two and is respectively arranged on both sides of the transport component 5. The bag opening machine 101 is used to drive the bag opening suction cup 102 to move toward or away from the powder-liquid double-chamber bag 2.

[0055] Specifically, a bag opening machine 101 and a bag opening suction cup 102 are provided at the bag opening station. The bag opening machine 101 can drive the bag opening suction cup 102 to move toward or away from the powder-liquid double-chamber bag 2. The output end of the bag opening machine 101 is connected to the bag opening suction cup 102, and the bag opening machine 101 can generate negative pressure on the bag opening suction cup 102. When the bag opening machine 101 drives the bag opening suction cup 102 and attaches it to the powder-liquid double-chamber bag 2, the bag opening machine 101 generates negative pressure, and the bag opening suction cup 102 can be pressurized and connected to the two surfaces of the powder-liquid double-chamber bag 2. The bag opening machine 101 drives the bag opening suction cup 102 to move in the direction away from the powder-liquid double-chamber bag 2 to disassemble the powder-liquid double-chamber bag 2.

[0056] Based on the above embodiment, the sealing component 4 includes a sealing machine 401 and a sealing mold 402. The sealing mold 402 is arranged at the output end of the sealing machine 401. The sealing component 4 is provided with two and is respectively arranged on both sides of the transport component 5. The sealing machine 401 is used to drive the sealing mold 402 to move toward or away from the powder-liquid double-chamber bag 2.

[0057] Specifically, the effects of the sealing machine 401 and the sealing mold 402 are completely opposite to those of the aforementioned bag opening machine 101 and bag opening suction cup 102. The sealing machine 401 drives the sealing mold 402 to move toward the powder-liquid double-chamber bag 2, and the powder-liquid double-chamber bag 2 is sealed by the extrusion of the two sealing molds 402. Generally speaking, a welding component is also provided on the sealing mold 402, and the sealing process is achieved by a combination of extrusion and welding.

[0058] On the basis of the above embodiment, it further includes a subpackaging assembly 10 provided at the subpackaging station, which is provided between the nitrogen filling station and the bag opening station. The subpackaging assembly 10 is used to inject medicinal powder into the powder cavity of the powder-liquid dual-chamber bag 2.

[0059] Specifically, the packaging assembly 10 is generally a screw-type or airflow-type powder packaging machine, which can inject the powder into the powder cavity of the powder-liquid dual-chamber bag 2. It should be noted that the packaging station is arranged between the bag opening station and the nitrogen filling station, and is also covered by the nitrogen hood 6 on its surface. The packaging process is also in a nitrogen environment.

[0060] On the basis of the above embodiment, a plurality of perforations are provided on the nitrogen hood 6 , and the plurality of perforations are provided corresponding to the guide rail 501 , the subpackaging assembly 10 , and the bag opening suction cup 102 .

[0061] Specifically, the nitrogen hood 6 wraps the bag opening station, the subpackaging station, and the nitrogen filling station, and grooves are made at positions that affect the rotation of the clamp 502 to avoid affecting the movement of the powder-liquid dual-chamber bag 2 on the guide rail 501. Holes are also opened at corresponding positions of the bag opening suction cup 102 and the subpackaging component to avoid mutual interference.

[0062] On the basis of the above embodiment, an operation plane 11 is further included, and the bag opening component 1, the nitrogen filling component 3, the sealing component 4, the transportation component 5, the nitrogen hood 6 and the nitrogen supply component are all arranged on the surface of the operation plane 11.

[0063] Specifically, the surface of the operating plane 11 is provided with a plurality of corresponding mounting bases to facilitate the installation of the bag opening component 1, the nitrogen filling component 3, the sealing component 4, the transport component 5, the nitrogen hood 6 and the nitrogen supply component. After the installation is completed, the entire device can be moved by shifting the operating plane 11. Setting the operating plane 11 separately can also make the bottoms of the aforementioned multiple components at the same horizontal height, and can also facilitate the adjustment of their vertical height or component size.

[0064] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0065] The above describes in detail the nitrogen protection device for the powder-liquid dual-chamber bag powder cavity provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is intended only to facilitate understanding of the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A powder-liquid double-chamber bag powder cavity nitrogen protection device, characterized in that: include: A bag opening component (1) is provided at the bag opening station, and the bag opening component (1) is used to open the powder cavity of the powder-liquid double-chamber bag (2); A nitrogen filling component (3) is provided at the nitrogen filling station, and the nitrogen filling component (3) is used to fill nitrogen into the powder cavity of the powder-liquid double-chamber bag (2); A sealing component (4) is provided at the sealing station, and the sealing component (4) is used to seal the powder-liquid double-chamber bag (2) after being filled with nitrogen; A transport component (5) is provided through the bag opening station, the nitrogen filling station and the sealing station, and the transport component (5) is used to move the powder-liquid double-chamber bag (2) from the bag opening station to the nitrogen filling station and the sealing station in sequence; A nitrogen hood (6) is wrapped around the bag opening station and the nitrogen filling station; A nitrogen supply component is connected to the nitrogen hood (6) and is used to introduce nitrogen into the nitrogen hood (6).

2. The powder-liquid double-chamber bag powder cavity nitrogen protection device according to claim 1, characterized in that: The nitrogen charging assembly (3) comprises a frame (301), a guide shaft (302), a linear bearing (303), a connecting plate (304), a cylinder (305), a baffle (306) and a push plate (307), wherein the cylinder (305) and the linear bearing (303) are both arranged on the frame (301), an output end of the cylinder (305) is connected to the connecting plate (304), and the connecting plate (304) is connected to the push plate (307) via the guide shaft (302), and two baffles (306) are provided and are respectively arranged on both sides of the push plate (307).

3. The powder-liquid double-chamber bag powder cavity nitrogen protection device according to claim 2, characterized in that: The transport assembly (5) comprises a guide rail (501) and a clamp (502); the guide rail (501) is arranged to pass through the bag opening station, the nitrogen filling station and the sealing station; the clamp (502) is arranged on the guide rail (501) and can slide along the guide rail (501); the clamp (502) is used to clamp the powder-liquid double-chamber bag (2).

4. The powder-liquid double-chamber bag powder cavity nitrogen protection device according to claim 3, characterized in that: A first gas distribution pipe (7) and a second gas distribution pipe (8) connected to the nitrogen supply assembly are provided at the top end of the nitrogen hood (6); a plurality of inflation heads (9) are provided on one side of the first gas distribution pipe (7) and the second gas distribution pipe (8) facing the interior of the nitrogen hood (6).

5. The powder-liquid double-chamber bag powder cavity nitrogen protection device according to claim 4, characterized in that: The first air distribution pipe (7) is arranged directly above the guide rail (501), and the second air distribution pipe (8) is arranged directly above the powder-liquid double-chamber bag (2).

6. The powder-liquid double-chamber bag powder cavity nitrogen protection device according to claim 5, characterized in that: The bag opening assembly (1) comprises a bag opening machine (101) and a bag opening suction cup (102), wherein the bag opening suction cup (102) is arranged at the output end of the bag opening machine (101), and the bag opening assembly (1) is provided with two and is respectively arranged on both sides of the transport assembly (5), and the bag opening machine (101) is used to drive the bag opening suction cup (102) to move toward or away from the powder-liquid double-chamber bag (2).

7. The powder-liquid double-chamber bag powder cavity nitrogen protection device according to claim 6, characterized in that: The sealing assembly (4) comprises a sealing machine (401) and a sealing mold (402); the sealing mold (402) is arranged at the output end of the sealing machine (401); two sealing assemblies (4) are provided and are respectively arranged on both sides of the transport assembly (5); the sealing machine (401) is used to drive the sealing mold (402) to move toward or away from the powder-liquid double-chamber bag (2).

8. The powder-liquid double-chamber bag powder cavity nitrogen protection device according to claim 7, characterized in that: It also includes a subpackaging assembly (10) provided at a subpackaging station, the subpackaging station being provided between the nitrogen filling station and the bag opening station, the subpackaging assembly (10) being used to inject medicinal powder into the powder cavity of the powder-liquid double-chamber bag (2).

9. The powder-liquid double-chamber bag powder cavity nitrogen protection device according to claim 8, characterized in that: The nitrogen hood (6) is provided with a plurality of perforations, and the plurality of perforations are provided corresponding to the guide rail (501), the subpackaging assembly (10), and the bag opening suction cup (102).

10. The powder-liquid double-chamber bag powder cavity nitrogen protection device according to any one of claims 1 to 9, characterized in that: It also includes an operating plane (11), and the bag opening component (1), the nitrogen filling component (3), the sealing component (4), the transport component (5), the nitrogen hood (6) and the nitrogen supply component are all arranged on the surface of the operating plane (11).

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