Gas distribution device for pharmaceutical packaging

Abstract

This utility model discloses a gas mixing device for pharmaceutical packaging, including a mixer, a storage tank, a gas analyzer, a dilution gas path, and a gas distribution path. The inlet of the dilution gas path is connected to a dilution gas source, and the outlet of the dilution gas path is connected to the mixer. The outlet of the mixer is connected to the storage tank. The inlet of the gas distribution path is connected to a gas source to be diluted, and the outlet of the gas distribution path is connected to the mixer. A gas analyzer for detecting the concentration of the diluted gas at the outlet of the storage tank is provided between the mixer and the storage tank. This utility model can control the mixing ratio of the dilution gas and the diluted gas through a first / second gas flow controller, thereby enabling the configuration of standard gases of different concentrations as needed. Simultaneously, the standard gases can be freely configured from the dilution gas and the diluted gas, significantly reducing purchase costs.

Description

Technical Field

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

[0002] In the production of packaging for chemically unstable pharmaceutical products, besides adding antioxidants and preservatives, a common and practical method is to introduce a relatively inert gas into the bottle to replace the air (oxygen). These relatively inert gases are called filling protective gases. Commonly used inert gases include nitrogen, helium, and argon. In the pharmaceutical industry, nitrogen and carbon dioxide are commonly used filling protective gases.

[0003] When packaging drugs, pre-mixed gas cylinders are usually purchased as packaging gas. However, these cylinders have drawbacks such as a single, non-adjustable gas concentration and high purchase costs. Therefore, there is an urgent need for a gas mixing device for drug packaging with adjustable concentration. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a gas mixing device for pharmaceutical packaging. The mixing ratio of diluent gas and diluted gas can be controlled by a first / second gas flow controller, thereby enabling the configuration of standard gas of different concentrations as needed. At the same time, the standard gas can be freely configured by the diluent gas and diluted gas, which greatly reduces the purchase cost.

[0005] The objective of this utility model is achieved through the following technical solution: A gas mixing device for pharmaceutical packaging includes a mixer, a storage tank, a gas analyzer, a dilution gas path, and a gas distribution path. The inlet of the dilution gas path is connected to a dilution gas source, the outlet of the dilution gas path is connected to the mixer, the outlet of the mixer is connected to the storage tank, the inlet of the gas distribution path is connected to a gas source to be diluted, and the outlet of the gas distribution path is connected to the mixer. A gas analyzer is provided between the mixer and the temporary storage tank to detect the concentration of the diluted gas at the outlet of the temporary storage tank.

[0006] Furthermore, the dilution gas path includes a first pressure sensor, a first solenoid valve, a first gas flow controller, and a first check valve arranged sequentially.

[0007] Furthermore, it also includes a second solenoid valve, which is connected in parallel with the first solenoid valve and the first gas flow controller.

[0008] Furthermore, the gas distribution path includes a second pressure sensor, a third solenoid valve, a second gas flow controller, and a second check valve arranged sequentially. Furthermore, it also includes a fourth solenoid valve, which is connected in parallel with the third solenoid valve and the second gas flow controller.

[0009] Furthermore, the inlet end of the gas distribution path is connected to multiple different gas sources to be diluted via multi-port connectors.

[0010] Furthermore, a first filter is provided between the first pressure sensor and the first solenoid valve.

[0011] Furthermore, a second filter is provided between the second pressure sensor and the third solenoid valve.

[0012] The beneficial effects of this utility model are: This invention can control the mixing ratio of diluent gas and diluted gas through a first / second gas flow controller, thereby enabling the configuration of standard gas of different concentrations as needed. At the same time, the standard gas can be freely configured by the diluent gas and diluted gas, significantly reducing the purchase cost. Attached Figure Description

[0013] Figure 1 This is a schematic diagram illustrating the working principle of the gas distribution device for pharmaceutical packaging in this embodiment of the present invention. In the diagram, 1 is the mixer; 2 is the storage tank; 3 is the gas analyzer; 4 is the first pressure sensor; 5 is the first solenoid valve; 6 is the first gas flow controller; 7 is the first check valve; 8 is the second solenoid valve; 9 is the second pressure sensor; 10 is the third solenoid valve; 11 is the second gas flow controller; 12 is the second check valve; 13 is the fourth solenoid valve; 14 is the first filter; and 15 is the second filter. Detailed Implementation

[0014] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] See Figure 1 This utility model provides a technical solution: Example: like Figure 1As shown, a gas mixing device for pharmaceutical packaging includes a mixer 1, a temporary storage tank 2, a gas analyzer 3, a dilution gas path, and a gas mixing path. The inlet of the dilution gas path is connected to a dilution gas source, the outlet of the dilution gas path is connected to the mixer 1, the outlet of the mixer 1 is connected to the temporary storage tank 2, the inlet of the gas mixing path is connected to the gas source to be diluted, and the outlet of the gas mixing path is connected to the mixer 1. A gas analyzer 3 is provided between the mixer 1 and the temporary storage tank 2 to detect the concentration of the diluted gas at the outlet of the temporary storage tank 2.

[0016] The dilution gas path includes a first pressure sensor 4, a first filter 14, a first solenoid valve 5, a first gas flow controller 6, and a first check valve 7 arranged in sequence.

[0017] It also includes a second solenoid valve 8, which is connected in parallel with the first solenoid valve 5 and the first gas flow controller 6.

[0018] The gas distribution path includes a second pressure sensor 9, a second filter 15, a third solenoid valve 10, a second gas flow controller 11, and a second check valve 12, arranged sequentially. It also includes a fourth solenoid valve 13, which is connected in parallel with the third solenoid valve 10 and the second gas flow controller 11.

[0019] The gas distribution circuit's inlet is connected to multiple different diluent gas sources via multi-port connectors. Valves are installed at the outlets of these different diluent gas sources; when distributing gas, the corresponding valve is opened when the desired diluent gas is needed.

[0020] 1. Both the diluent gas source and the gas being diluted can be, but are not limited to, high-concentration gases contained in steel cylinders. 2. A PLC can also be installed, connected to the gas analyzer 3, the first gas flow controller 6, and the second gas flow controller 11. When the gas analyzer 3 detects a difference from the target concentration, such as when the concentration detected by the gas analyzer 3 is lower than the target concentration, the PLC controls the second gas flow controller 11 to increase the flow rate of the gas being diluted, thereby increasing the mixed concentration.

[0021] In this embodiment, the diluting gas is helium, the gas being diluted is carbon dioxide, and the gas analyzer 3 is a carbon dioxide concentration analyzer.

[0022] Working principle: The second solenoid valve 8 and the fourth solenoid valve 13 form a gas bypass. Before gas distribution, the gas bypass is opened to purge the gas path. The purged gas is discharged directly to avoid affecting the subsequent gas distribution.

[0023] Subsequently, the helium pressure is detected by the first pressure sensor 4 at the inlet of the dilution gas path. Then, the helium enters the mixer 1 through the filter, the first solenoid valve 5, and the first gas flow controller 6. Similarly, carbon dioxide enters the mixer 1 through the gas distribution path and mixes with helium. The mixed gas (i.e., standard gas) is sent from the mixer 1 to the temporary storage tank 2 for storage, so that the mixed gas can be connected to the gas consumption end at any time.

[0024] A carbon dioxide concentration analyzer is installed between mixer 1 and temporary storage tank 2 to detect the carbon dioxide concentration in the mixed gas in real time. If the concentration detected by the carbon dioxide concentration analyzer is lower than the target concentration, the second gas flow controller 11 is controlled to increase the flow rate of the diluted gas, thereby increasing its mixed concentration; otherwise, the second gas flow controller 11 is controlled to decrease the flow rate of the diluted gas, thereby decreasing its mixed concentration.

[0025] This invention can control the mixing ratio of diluent gas and diluted gas through a first / second gas flow controller, thereby enabling the configuration of standard gas of different concentrations as needed. At the same time, the standard gas can be freely configured by the diluent gas and diluted gas, significantly reducing the purchase cost.

[0026] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A gas supply device for pharmaceutical packaging, characterized by: It includes a mixer, a storage tank, a gas analyzer, a dilution gas path, and a gas distribution path. The inlet of the dilution gas path is connected to a dilution gas source, the outlet of the dilution gas path is connected to the mixer, the outlet of the mixer is connected to the storage tank, the inlet of the gas distribution path is connected to the gas source to be diluted, and the outlet of the gas distribution path is connected to the mixer. A gas analyzer is provided between the mixer and the temporary storage tank to detect the concentration of the diluted gas at the outlet of the temporary storage tank.

2. The gas distribution device for pharmaceutical packaging according to claim 1, wherein: The dilution gas path includes a first pressure sensor, a first solenoid valve, a first gas flow controller, and a first check valve arranged in sequence.

3. The gas distribution device for pharmaceutical packaging according to claim 2, wherein: It also includes a second solenoid valve, which is connected in parallel with the first solenoid valve and the first gas flow controller.

4. The gas distribution apparatus for pharmaceutical packaging according to claim 1, wherein: The gas distribution path includes a second pressure sensor, a third solenoid valve, a second gas flow controller, and a second check valve arranged in sequence.

5. The gas distribution device for pharmaceutical packaging according to claim 4, wherein: It also includes a fourth solenoid valve, which is connected in parallel with the third solenoid valve and the second gas flow controller.

6. The gas distribution device for pharmaceutical packaging according to claim 1, wherein: The gas inlet of the gas distribution circuit is connected to multiple different gas sources to be diluted via multi-port connectors.

7. The gas distribution device for pharmaceutical packaging according to claim 2, characterized in that: A first filter is provided between the first pressure sensor and the first solenoid valve.

8. The gas distribution device for pharmaceutical packaging according to claim 4, wherein: A second filter is provided between the second pressure sensor and the third solenoid valve.

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