Nitrogen charging device for aluminum barrel
A compact and efficient aluminum can nitrogen filling device addresses space and cost issues by integrating vacuum and nitrogen cycles directly on the can, ensuring high efficiency and aseptic conditions.
Patent Information
- Application Number
- CN202421851386.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-01
AI Technical Summary
The existing aluminum barrel nitrogen charging device has large space occupancy, complex structure, high cost, poor nitrogen charging effect, and risks of drug pollution.
An aluminum barrel nitrogen charging device is designed, including a telescopic compression mechanism, adsorbent, nitrogen charging cover and lifting drive mechanism. By directly vacuuming and nitrogen charging of the aluminum barrel on the drug packaging line, additional mechanisms such as transmission, sealing, cleaning and sterilization are eliminated, simplifying the structure and improving nitrogen charging efficiency.
It achieves small space occupation, simple structure, low cost, good nitrogen filling effect, safe and reliable, avoids drug pollution, and improves work efficiency and replacement efficiency.
Smart Images
Figure CN223101106U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nitrogen filling devices, and specifically, to a nitrogen filling device for aluminum barrels. Background Art
[0002] In the modern medical industry, the safe, stable and effective storage of drugs is of crucial importance. As a common drug packaging material, medical aluminum barrels are widely used in drug storage. To ensure that the bulk drugs or finished products are not affected by external environmental factors during storage and maintain their original quality and efficacy, the nitrogen filling technology for aluminum barrels has gradually been applied to the production and storage process of drugs. During drug production, by filling nitrogen into the aluminum barrels, the air inside the aluminum barrels can be displaced, reducing the influence of oxygen and moisture on the drugs, thereby effectively extending the shelf life of the drugs. At the same time, nitrogen can also inhibit the growth of microorganisms, further improving the safety of the drugs. The application of the nitrogen filling technology for aluminum barrels is of great significance.
[0003] Currently, the medical aluminum barrel nitrogen filling devices on the market generally have the following problems: ① large space occupation, generally in a box structure, where the entire aluminum barrel needs to be placed in the box for nitrogen filling operation, and the box has a large volume, which is not conducive to the overall layout of the equipment; ② complex structure, since the aluminum barrel needs to be sent into the box for nitrogen filling, there are transmission mechanisms, sealing mechanisms, cleaning mechanisms, sterilization mechanisms, etc. that are matched with the box, and the auxiliary mechanisms are too bulky; ③ high cost, the limitations of the box structure result in a large and complex equipment, with a high cost itself; at the same time, the cost of the entire dispensing line will also increase accordingly to match the nitrogen filling box; ④ poor nitrogen filling effect, when displacing the air inside the aluminum barrel, the air inside the box also needs to be displaced simultaneously, increasing the nitrogen displacement volume and affecting the displacement efficiency, and the nitrogen filling effect is not good; ⑤ there are risks, there is a lack of Class A laminar flow protection during the process of the aluminum barrel entering the box for nitrogen filling, and there is a risk of contaminating the drugs. Summary of the Utility Model
[0004] The utility model provides a nitrogen filling device for aluminum barrels, which solves the problems of large space occupation, complex structure, high cost, poor nitrogen filling effect and risks existing in the nitrogen filling device for aluminum barrels in the related art.
[0005] The technical solution of the utility model is as follows: A nitrogen filling device for aluminum barrels, which is used to be installed on the rack at the nitrogen filling station of a drug dispensing line. The key lies in: including,
[0006] A telescopic pressing mechanism, one end of which is used to be arranged on the rack;
[0007] An adsorbing part, which is arranged to be lifted and lowered at the other end of the telescopic pressing mechanism and is used to open or close the lid of the aluminum barrel;
[0008] A nitrogen filling cover is provided at the periphery of the lower end of the adsorbing member. A vacuum pumping port and a nitrogen filling port are provided on the nitrogen filling cover. After the telescopic pressing mechanism extends, the lower end of the nitrogen filling cover is hermetically pressed against the periphery of the barrel mouth of the aluminum barrel.
[0009] A nitrogen content detection port is further provided on the nitrogen filling cover.
[0010] It further includes
[0011] A positioning shell is provided at the lower end of the telescopic pressing mechanism. The nitrogen filling cover is provided at the periphery of the lower end of the positioning shell. The nitrogen filling cover is provided at the other end of the telescopic pressing mechanism by means of the positioning shell;
[0012] A lifting driving mechanism is provided in the positioning shell. The adsorbing member is provided at the lower end of the lifting driving mechanism and is located below the positioning shell. The adsorbing member is lifted and arranged at the other end of the telescopic pressing mechanism by means of the lifting driving mechanism. After the lifting driving mechanism contracts, the adsorbing member moves upward to separate the barrel cover of the aluminum barrel from the barrel mouth of the aluminum barrel.
[0013] It further includes a pressure switch. The outlet end of the pressure switch is connected to the air inlet of the adsorbing member.
[0014] It further includes
[0015] An upper flange is provided at the periphery of the lower end of the positioning shell. The upper flange is coaxially arranged with the positioning shell;
[0016] A lower flange is provided at the periphery of the upper end of the nitrogen filling cover. The lower flange and the upper flange form a detachable connection.
[0017] It further includes a support ring. The support ring is provided at the periphery of the upper end of the nitrogen filling cover. The upper end surface of the support ring contacts the lower end surface of the lower flange. The support ring and the lower flange form a detachable connection.
[0018] The outer diameter of the upper flange is larger than the inner diameter of the lower flange and smaller than the outer diameter of the lower flange. It further includes
[0019] A first locking bolt. The lower flange and the upper flange form a detachable connection by means of the first locking bolt. The number of the first locking bolts is at least two. All the first locking bolts are arranged along the circumferential direction of the upper flange;
[0020] A second locking bolt, wherein the support ring and the lower flange are detachably connected by means of the second locking bolt, and the number of the second locking bolts is at least two, and all the second locking bolts are arranged along the circumferential direction of the lower flange.
[0021] Further included is
[0022] A transverse plate, and the upper end of the telescopic pressing mechanism is arranged on the transverse plate;
[0023] A longitudinal plate, and the longitudinal plates are arranged at both ends of the transverse plate, the longitudinal plates are located above the transverse plate, and the longitudinal plates are used for being arranged on the frame.
[0024] Further included is a reinforcing plate, the reinforcing plate is arranged at the upper end of the longitudinal plate, the length of the reinforcing plate is greater than the length of the longitudinal plate, the width of the reinforcing plate is greater than the width of the longitudinal plate, and the longitudinal plate is arranged on the frame by means of the reinforcing plate.
[0025] Mounting holes are formed in the reinforcing plate, the number of the mounting holes is at least two, and all the mounting holes are arranged along the length direction of the reinforcing plate.
[0026] The working principle and beneficial effects of the present utility model are as follows: One end of the telescopic pressing mechanism is used for being arranged on the frame; The suction attachment is arranged in a lifting manner at the other end of the telescopic pressing mechanism and is used for opening or closing the lid of the aluminum barrel; A nitrogen filling cover is arranged on the periphery of the lower end of the suction attachment, and a vacuum pumping port and a nitrogen filling port are arranged on the nitrogen filling cover. After the telescopic pressing mechanism extends, the lower end of the nitrogen filling cover is hermetically pressed against the periphery of the barrel opening of the aluminum barrel. A nitrogen filling station is arranged on the medicine dispensing line, and the upper end of the telescopic pressing mechanism is installed on the frame at the nitrogen filling station. When the aluminum barrel reaches below the nitrogen filling cover, the telescopic pressing mechanism extends, pushing the suction attachment and the nitrogen filling cover to descend, so that the lower end of the nitrogen filling cover is hermetically pressed against the periphery of the barrel opening of the aluminum barrel. The suction attachment sucks and lifts the lid on the aluminum barrel, exposing the barrel opening inside the nitrogen filling cover. Then, the vacuum pumping port is opened to pump the inside of the aluminum barrel to a negative pressure, and then the vacuum pumping port is closed, and the nitrogen filling port is opened to fill nitrogen. The operations of pumping vacuum and filling nitrogen are repeated several times until the nitrogen content in the aluminum barrel reaches the specified value. Then, the vacuum pumping port and the nitrogen filling port are closed, the suction attachment descends to cover the lid back on the aluminum barrel, and then the telescopic pressing mechanism contracts, driving the suction attachment and the nitrogen filling cover to rise back to the initial position, and the nitrogen filling cover is separated from the aluminum barrel, completing the nitrogen filling process. The aluminum barrel can be directly conveyed to the next station.
[0027] The nitrogen filling device of the present utility model does not require a separate nitrogen filling box device and supporting mechanisms, thus occupying less space. It eliminates additional mechanisms such as the previous transmission mechanism, sealing mechanism, cleaning mechanism, sterilization mechanism, etc., greatly optimizing the overall structure, making it simple in structure and having lower production and maintenance costs. When the nitrogen filling device needs to be cleaned and sterilized, only the cleaning and sterilization pipeline needs to be connected to the nitrogen filling device, and it can be carried out simultaneously with the cleaning and sterilization of the filling line, eliminating the time for entering and exiting the nitrogen filling box and the cleaning and sterilization time of the nitrogen filling box. No other additional operations are required. The whole process is simple and efficient, meeting the cleaning and sterilization effect while improving work efficiency, reducing operation time, and filling nitrogen efficiently. Since there is no need to set up a separate nitrogen filling box, when replacing the air in the aluminum barrel, there is no need to replace the air in the nitrogen filling box, reducing the nitrogen replacement volume, improving the replacement efficiency, and achieving a better nitrogen filling effect. The nitrogen filling hood can be simply and effectively cleaned and sterilized separately, and the nitrogen filling process is always under the A-level laminar flow, effectively avoiding the risk of drug contamination. Due to the simple and compact structure of this device, it is convenient for installation and maintenance, and has lower production and maintenance costs, so it can be widely promoted. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The following will further illustrate the above characteristics, technical features, advantages and their implementation methods of the present utility model in a clear and understandable manner in combination with the drawings in the preferred embodiments.
[0029] Figure 1 It is a schematic structural diagram in one direction of the present utility model.
[0030] Figure 2 It is a schematic structural diagram in another direction of the present utility model.
[0031] Figure 3 It is a schematic connection structural diagram of the suction attachment, telescopic pressing mechanism and nitrogen filling hood in one direction of the present utility model.
[0032] Figure 4 It is a schematic connection structural diagram of the suction attachment, telescopic pressing mechanism and nitrogen filling hood in another direction of the present utility model.
[0033] Figure 5 It is a schematic structural diagram of each state of the present utility model in specific use.
[0034] In the figure: 1, telescopic pressing mechanism; 2, suction attachment; 3, nitrogen filling hood; 4, aluminum barrel; 5, vacuum pumping port; 6, nitrogen filling port; 7, nitrogen content detection port; 8, positioning shell; 9, lifting drive mechanism; 10, pressure switch; 11, upper flange; 12, lower flange; 13, support ring; 14, first locking bolt; 15, second locking bolt; 16, transverse plate; 17, longitudinal plate; 18, reinforcing plate; 19, mounting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will describe the specific embodiments of the present invention with reference to the accompanying drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other embodiments can also be obtained.
[0036] To make the drawings concise, only the parts related to the utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, parts with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also can mean "more than one" situation, and "several" includes "two" and "more than two".
[0037] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0038] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.
[0039] Example, referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , an embodiment of the present invention provides a nitrogen filling device for an aluminum barrel, which is used to be installed on the rack at the nitrogen filling station of a medicine dispensing line. It includes a telescopic pressing mechanism 1, an adsorbing member 2, a nitrogen filling cover 3. One end of the telescopic pressing mechanism 1 is used to be set on the rack; the adsorbing member 2 is arranged to move up and down at the other end of the telescopic pressing mechanism 1, and is used to open or close the lid of the aluminum barrel 4; the nitrogen filling cover 3 is arranged around the lower end of the adsorbing member 2, and a vacuum pumping port 5 and a nitrogen filling port 6 are arranged on the nitrogen filling cover 3. After the telescopic pressing mechanism 1 extends, the lower end of the nitrogen filling cover 3 is hermetically pressed against the periphery of the barrel mouth of the aluminum barrel 4.
[0040] A nitrogen filling station is set on the medicine dispensing line. The upper end of the telescopic pressing mechanism 1 is installed on the rack at the nitrogen filling station, and the adsorbing member 2 is arranged to move up and down at the lower end of the telescopic pressing mechanism 1. After the aluminum barrel 4 reaches below the nitrogen filling cover 3, as Figure 5the state shown in a; the telescopic pressing mechanism 1 extends, pushing the suction attachment 2 and the nitrogen filling cover 3 downwards, so that the lower end of the nitrogen filling cover 3 is hermetically pressed against the periphery of the mouth of the aluminum bucket 4, as Figure 5 the state shown in b; the suction attachment 2 sucks and lifts the lid on the aluminum bucket 4, exposing the mouth of the bucket inside the nitrogen filling cover 3, as Figure 5 the state shown in c; then the vacuum port 5 is opened, the inside of the aluminum bucket 4 is evacuated to a negative pressure, then the vacuum port 5 is closed, and the nitrogen filling port 6 is opened for nitrogen filling. The operations of evacuating and filling nitrogen are repeated several times, as Figure 5 the state shown in d; until the nitrogen content in the aluminum bucket 4 reaches the specified value, then the vacuum port 5 and the nitrogen filling port 6 are closed, and the suction attachment 2 descends to cover the lid back onto the aluminum bucket 4, as Figure 5 the state shown in e; then the telescopic pressing mechanism 1 contracts, driving the suction attachment 2 and the nitrogen filling cover 3 to rise back to the initial position, and the nitrogen filling cover 3 disengages from the aluminum bucket 4, as Figure 5 the state shown in f, completing the nitrogen filling process, and the aluminum bucket 4 can be directly transferred to the next station.
[0041] The nitrogen filling device of the present utility model does not require a separate nitrogen filling box device and supporting mechanisms, and occupies less space. Additional mechanisms such as the previous transmission mechanism, sealing mechanism, cleaning mechanism, sterilization mechanism, etc. are cancelled, the overall structure is greatly optimized, the structure is simple, and the production and maintenance costs are relatively low. When the nitrogen filling device needs to be cleaned and sterilized, only the cleaning and sterilization pipeline needs to be connected to the nitrogen filling device, and it can be carried out simultaneously with the cleaning and sterilization of the filling line, eliminating the time for entering and leaving the nitrogen filling box, as well as the cleaning and sterilization time of the nitrogen filling box. No other additional operations are required, and the whole process is simple and efficient. While meeting the cleaning and sterilization effect, it can improve work efficiency, reduce operation time, and fill nitrogen efficiently. Because there is no need to set up a separate nitrogen filling box, when replacing the air in the aluminum bucket, there is no need to replace the air in the nitrogen filling box, reducing the nitrogen replacement volume, improving the replacement efficiency, and achieving a better nitrogen filling effect. The nitrogen filling cover 3 can be simply and effectively cleaned and sterilized separately, and the nitrogen filling process is always under the A-level laminar flow, which can effectively avoid the risk of drug contamination. Due to the simple and compact structure of this device, it is convenient for installation and maintenance, and the production and maintenance costs are relatively low, so it can be widely promoted.
[0042] Furthermore, as Figure 1 、 Figure 2 and Figure 3 shown, a nitrogen content detection port 7 is also provided on the nitrogen filling cover 3. By detecting whether the nitrogen content at the nitrogen content detection port 7 reaches the specified value, it is judged whether the nitrogen content in the aluminum bucket reaches the specified value, and the operation is more simple and convenient.
[0043] Furthermore, as Figure 3 and Figure 4As shown in the figure, it further includes a positioning shell 8 and a lifting drive mechanism 9. The positioning shell 8 is arranged at the lower end of the telescopic pressing mechanism 1. The nitrogen filling cover 3 is arranged on the periphery of the lower end of the positioning shell 8. The nitrogen filling cover 3 is arranged at the other end of the telescopic pressing mechanism 1 by means of the positioning shell 8. The lifting drive mechanism 9 is arranged inside the positioning shell 8. The suction accessory 2 is arranged at the lower end of the lifting drive mechanism 9 and is located below the positioning shell 8. The suction accessory 2 is arranged to be lifted by the lifting drive mechanism 9 at the other end of the telescopic pressing mechanism 1. After the lifting drive mechanism 9 contracts, the suction accessory 2 moves upward to separate the lid of the aluminum bucket 4 from the mouth of the aluminum bucket 4. When the lifting drive mechanism 9 extends, it pushes the suction accessory 2 downward to contact the lid of the aluminum bucket 4, sucks the lid, and then the lifting drive mechanism 9 contracts, causing the suction accessory 2 to move upward and driving the lid to move upward synchronously. Since the nitrogen filling cover 3 is pressed against the mouth of the aluminum bucket 4 at this time, the aluminum bucket does not move, and the lid is separated from the mouth of the aluminum bucket 4. After nitrogen filling is completed, the lifting drive mechanism 9 extends again to cover the lid back onto the aluminum bucket 4. The structure is simple and easy to use.
[0044] Furthermore, as Figure 3 shown in the figure, it further includes a pressure switch 10. The outlet end of the pressure switch 10 is connected to the air inlet of the suction accessory 2. The pressure switch 10 is a simple pressure control device. When the measured pressure reaches the rated value, the pressure switch 10 can issue an alarm or a control signal. By using the pressure switch 10, it is possible to detect whether the lid is lifted during the whole process, prevent misoperation, and be safer and more reliable.
[0045] Furthermore, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown in the figure, it further includes an upper flange 11 and a lower flange 12. The upper flange 11 is arranged on the periphery of the lower end of the positioning shell 8, and the upper flange 11 is coaxially arranged with the positioning shell 8. The lower flange 12 is arranged on the periphery of the upper end of the nitrogen filling cover 3, and the lower flange 12 forms a detachable connection with the upper flange 11. Through the cooperation of the upper flange 11 and the lower flange 12, the positioning shell 8 and the nitrogen filling cover 3 are locked together. The structure is simple, the connection is firm and reliable, the disassembly and assembly are convenient and fast, saving time and effort.
[0046] Furthermore, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown in the figure, it further includes a support ring 13. The support ring 13 is arranged on the periphery of the upper end of the nitrogen filling cover 3. The upper end surface of the support ring 13 contacts the lower end surface of the lower flange 12, and the support ring 13 forms a detachable connection with the lower flange 12. The support ring 13 can play a role in supporting the lower flange 12, and at the same time can lock the lower flange 12 and the nitrogen filling cover 3 together, making the connection between the lower flange 12 and the nitrogen filling cover 3 more firm and reliable.
[0047] Further, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the outer diameter of the upper flange 11 is greater than the inner diameter of the lower flange 12 and less than the outer diameter of the lower flange 12. It further includes a first locking bolt 14 and a second locking bolt 15. The lower flange 12 and the upper flange 11 are detachably connected by means of the first locking bolt 14. The number of the first locking bolts 14 is at least two, and all the first locking bolts 14 are arranged along the circumferential direction of the upper flange 11; the support ring 13 and the lower flange 12 are detachably connected by means of the second locking bolt 15. The number of the second locking bolts 15 is at least two, and all the second locking bolts 15 are arranged along the circumferential direction of the lower flange 12. The first locking bolt 14 is located inside the second locking bolt 15. When it is necessary to separate the upper flange 11 from the lower flange 12, only the first locking bolt 14 needs to be disassembled. When it is necessary to separate the lower flange 12 from the nitrogen filling cover 3, only the second locking bolt 15 needs to be disassembled, and the operation is simple and convenient.
[0048] Further, as shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , it further includes a transverse plate 16 and a longitudinal plate 17. The upper end of the telescopic pressing mechanism 1 is arranged on the transverse plate 16; longitudinal plates 17 are arranged at both ends of the transverse plate 16. The longitudinal plates 17 are located above the transverse plate 16 and are used for being arranged on the frame. The transverse plate 16 and the longitudinal plate 17 cooperate to hoist the telescopic pressing mechanism 1 on the frame, with a simple structure, convenient and quick disassembly and assembly, saving time and effort.
[0049] Further, as shown in Figure 1 , Figure 2 and Figure 3 , it further includes a reinforcing plate 18. The reinforcing plate 18 is arranged at the upper end of the longitudinal plate 17. The length of the reinforcing plate 18 is greater than the length of the longitudinal plate 17, and the width of the reinforcing plate 18 is greater than the width of the longitudinal plate 17. The longitudinal plate 17 is arranged on the frame by means of the reinforcing plate 18. The use of the reinforcing plate 18 can increase the contact area with the frame, making the connection between the nitrogen filling device and the frame more firm and reliable.
[0050] Further, as shown in Figure 1 , Figure 2 and Figure 3 , mounting holes 19 are formed in the reinforcing plate 18. The number of the mounting holes 19 is at least two, and all the mounting holes 19 are arranged along the length direction of the reinforcing plate 18. During installation, as long as fastening bolts are installed at the mounting holes 19, the reinforcing plate 18 can be locked on the frame by means of the fastening bolts, and the operation is more simple and convenient.
[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.
Claims
1. An aluminum barrel nitrogen filling device, which is used to be installed on the rack at the nitrogen filling station of the drug dispensing line, and is characterized in that: including, a telescopic pressing mechanism (1), one end of the telescopic pressing mechanism (1) is used to be arranged on the frame; a suction attachment (2), the suction attachment (2) is arranged to be lifted and lowered at the other end of the telescopic pressing mechanism (1) and is used to open or close the lid of an aluminum barrel (4); a nitrogen filling hood (3), the nitrogen filling hood (3) is arranged at the other end of the telescopic pressing mechanism (1) and is located outside the suction attachment (2). A vacuum pumping port (5) and a nitrogen filling port (6) are arranged on the nitrogen filling hood (3). After the telescopic pressing mechanism (1) extends, the lower end of the nitrogen filling hood (3) is hermetically pressed around the mouth of the aluminum barrel (4).
2. The nitrogen filling device for aluminum barrels according to claim 1, characterized in that: A nitrogen content detection port (7) is also arranged on the nitrogen filling hood (3).
3. A nitrogen filling device for aluminum barrels according to claim 1, characterized in that: Also including, a positioning shell (8), the positioning shell (8) is arranged at the lower end of the telescopic pressing mechanism (1). The nitrogen filling hood (3) is arranged outside the lower end of the positioning shell (8). The nitrogen filling hood (3) is arranged at the other end of the telescopic pressing mechanism (1) by means of the positioning shell (8); a lifting drive mechanism (9), the lifting drive mechanism (9) is arranged in the positioning shell (8). The suction attachment (2) is arranged at the lower end of the lifting drive mechanism (9) and is located below the positioning shell (8). The suction attachment (2) is arranged to be lifted and lowered at the other end of the telescopic pressing mechanism (1) by means of the lifting drive mechanism (9). After the lifting drive mechanism (9) contracts, the suction attachment (2) moves upward to separate the lid of the aluminum barrel (4) from the mouth of the aluminum barrel (4).
4. The nitrogen filling device for aluminum barrels according to claim 3, characterized in that: Also including a pressure switch (10), the outlet end of the pressure switch (10) is connected to the air inlet of the suction attachment (2).
5. The nitrogen filling device for aluminum barrels according to claim 3, characterized in that: Also including, an upper flange (11), the upper flange (11) is arranged outside the lower end of the positioning shell (8), and the upper flange (11) is coaxially arranged with the positioning shell (8); a lower flange (12), the lower flange (12) is arranged outside the upper end of the nitrogen filling hood (3), and the lower flange (12) and the upper flange (11) form a detachable connection.
6. The nitrogen filling device for aluminum barrels according to claim 5, characterized in that: Also including a support ring (13), the support ring (13) is arranged outside the upper end of the nitrogen filling hood (3), and the upper end surface of the support ring (13) contacts the lower end surface of the lower flange (12). The support ring (13) and the lower flange (12) form a detachable connection.
7. The nitrogen filling device for aluminum barrels according to claim 6, characterized in that: The outer diameter of the upper flange (11) is larger than the inner diameter of the lower flange (12) and smaller than the outer diameter of the lower flange (12). Also including, a first locking bolt (14), the lower flange (12) and the upper flange (11) form a detachable connection by means of the first locking bolt (14). The number of the first locking bolts (14) is at least two, and all the first locking bolts (14) are arranged along the circumferential direction of the upper flange (11); A second locking bolt (15), wherein the support ring (13) and the lower flange (12) are detachably connected by means of the second locking bolt (15), the number of the second locking bolts (15) is at least two, and all the second locking bolts (15) are arranged along the circumferential direction of the lower flange (12).
8. A nitrogen filling device for aluminum barrels according to claim 1, characterized in that: Further comprising a transverse plate (16), the upper end of the telescopic pressing mechanism (1) is arranged on the transverse plate (16); a longitudinal plate (17), the longitudinal plates (17) are arranged at both ends of the transverse plate (16), the longitudinal plates (17) are located above the transverse plate (16), and the longitudinal plates (17) are used for being arranged on the frame.
9. The nitrogen filling device for aluminum barrels according to claim 8, characterized in that: Further comprising a reinforcing plate (18), the reinforcing plate (18) is arranged at the upper end of the longitudinal plate (17), the length of the reinforcing plate (18) is greater than the length of the longitudinal plate (17), the width of the reinforcing plate (18) is greater than the width of the longitudinal plate (17), and the longitudinal plate (17) is arranged on the frame by means of the reinforcing plate (18).
10. The nitrogen filling device for aluminum barrels according to claim 9, characterized in that: Mounting holes (19) are formed in the reinforcing plate (18), the number of the mounting holes (19) is at least two, and all the mounting holes (19) are arranged along the length direction of the reinforcing plate (18).