Soft bag filling system

Abstract

The utility model provides a soft bag filling system which comprises a liquid storage tank, a connecting pipe communicated with the liquid storage tank, a filling valve, an air inlet valve and a filling head, wherein the filling valve, the air inlet valve and the filling head are sequentially arranged at the lower end of the connecting pipe. The air inlet valve is used for controlling the amount of air injected into the bag; the filling valve, the air inlet valve and the filling head are fixedly connected, and the filling valve controls the amount of liquid medicine filled into the bag; a medicine inlet pipe is arranged at the top of the liquid storage tank, and a medicine inlet pipe control valve for controlling liquid medicine to enter the liquid storage tank is arranged on the medicine inlet pipe; a liquid level meter for sensing the position of liquid medicine in the liquid storage tank is arranged on the liquid storage tank and is connected with the medicine inlet pipe control valve. The problem that a mass flow meter needs to be used for metering in an existing large infusion soft bag filling system is solved, the cost of the filling system is reduced, the cost performance of the large infusion soft bag filling machine is improved, and therefore the benefits of large infusion production are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of soft bag filling systems, and particularly to soft bag filling systems. Background Technology

[0002] Because the two layers of film in large-volume parenteral bags are tightly bonded together before filling, the existing filling process for large-volume parenteral bags is pressure filling to ensure that the medication is filled into the bag. The filling system is as follows: Figure 1 The system mainly consists of a storage tank 4, a manual valve 5, a mass flow meter 6, a connecting pipe 7, a filling valve 8, and a filling head 9. The working process is as follows: when an empty bag enters the filling station, the filling head 9 seals the soft bag interface 1, the filling valve 8 opens, and the pressurized medicine liquid 3 bursts through the tightly sealed membrane 2 and enters the bag. The mass flow meter 6 measures the filling volume, and once the filling volume is reached, the mass flow meter 6 sends a signal, and the filling valve 8 closes, completing the metering and filling process.

[0003] Because of the suction force of the two layers of film tightly adhering to the empty bag, it requires resistance to be opened. This resistance varies depending on factors such as the tension during film blowing and slitting by the bag manufacturer, the adhesiveness of the film surface material, and the ambient temperature. Therefore, the flow rate of the liquid medicine passing through the filling valve per unit time varies depending on the bag's resistance, making it impossible to measure using time. Only a mass flow meter can measure this. However, mass flow meters are expensive (approximately 40,000 yuan per unit), and since large-volume parenteral solutions are for ordinary medications, the high cost of filling equipment places a heavy burden on production companies. Utility Model Content

[0004] In view of the deficiencies in the prior art, this utility model provides a soft bag filling system and filling process to solve the problems mentioned in the background art.

[0005] This utility model provides a soft bag filling system, including a liquid storage tank, a connecting pipe connected to the liquid storage tank, and a filling valve, an air inlet valve, and a filling head sequentially arranged at the lower end of the connecting pipe; the air inlet valve controls the amount of gas injected into the bag; the filling valve and the air inlet valve are fixedly connected to the filling head, and the filling valve controls the amount of medicine injected into the bag; a medicine inlet pipe is provided at the top of the liquid storage tank, and a medicine inlet pipe control valve is provided on the medicine inlet pipe to control the medicine entering the liquid storage tank; a level gauge is provided on the liquid storage tank to sense the position of the medicine in the liquid storage tank, and the level gauge is connected to the medicine inlet pipe control valve.

[0006] In one embodiment, a cleaning ball is provided at the end of the drug inlet tube for cleaning the inside of the storage tank.

[0007] In one embodiment, the top of the liquid storage tank is provided with a sealing cap.

[0008] In one embodiment, the liquid storage tank and the filling head are fixedly mounted on the rotating disc of the filling machine.

[0009] In one embodiment, a rotary valve is provided between the drug inlet pipe and the storage tank, the drug inlet pipe is fixedly connected to the hollow part of the rotary valve, and the movable part of the rotary valve is fixedly connected to the sealing cover of the storage tank.

[0010] In one embodiment, a pressure regulator is connected to the top of the liquid storage tank to ensure that the pressure inside the liquid storage tank remains constant.

[0011] In one embodiment, the rotating disk is provided with a plurality of filling heads, and a plurality of filling bags are provided corresponding to the filling heads. The number of connecting tubes is provided corresponding to the number of filling heads.

[0012] A flexible bag filling process is also provided, which includes using the above-mentioned flexible bag filling system and includes the following steps:

[0013] S1. Before filling with liquid medicine, open the air inlet valve to blow open the two layers of film of the empty filling bag, and fill the empty filling bag with gas.

[0014] S2. The filling valve is opened, and the liquid medicine enters the empty bag without resistance. The pressure or height of the liquid medicine in the storage tank is constant, and the liquid medicine in the filling bag is measured by time.

[0015] Beneficial effects of this utility model

[0016] This utility model provides a soft bag filling system and filling process, which solves the problem that the existing large-volume infusion soft bag filling system requires the use of a mass flow meter for measurement, reduces the cost of the filling system, improves the cost-effectiveness of the large-volume infusion soft bag filling machine, and thus improves the efficiency of large-volume infusion production. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the existing filling system of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this utility model;

[0020] The components include: 1. Bag inlet; 2. Bag film; 3. Liquid medicine; 4. Storage tank; 41. Sealing cap; 5. Manual valve; 6. Mass flow meter; 7. Connecting pipe; 8. Filling valve; 9. Filling head; 10. Level gauge; 11. Inlet pipe; 12. Inlet pipe control valve; 13. Filling machine frame; 14. Cleaning ball; 15. Air inlet control valve; 16. Rotary disc; 17. Rotary valve; 18. Pressure regulator. Detailed Implementation

[0021] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0022] Reference Figure 2 and Figure 3

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] This utility model provides a flexible bag filling system, referenced Figure 2 The system includes a storage tank 4, a connecting pipe 7 connected to the storage tank 4, and a filling valve 8, an air inlet valve, and a filling head 9 sequentially arranged at the lower end of the connecting pipe 7. The air inlet valve controls the amount of gas injected into the bag. The filling valve 8 and the air inlet valve are fixedly connected to the filling head 9, and the filling valve 8 controls the amount of medicine liquid 3 poured into the bag. A medicine inlet pipe 11 is provided at the top of the storage tank 4, and a medicine inlet pipe 11 control valve is provided on the medicine inlet pipe 11 to control the medicine liquid 3 entering the storage tank 4. A level gauge 10 is provided on the storage tank 4 to sense the position of the medicine liquid 3 in the storage tank 4. The level gauge 10 is connected to the medicine inlet pipe 11 control valve. The level gauge 10 and the medicine inlet pipe 11 control valve work together to ensure that the medicine liquid 3 in the storage tank 4 fluctuates at a set height position, thereby ensuring that the amount of medicine liquid 3 flowing through the filling valve 8 per unit time is constant. The amount of medicine liquid 3 poured into the bag is determined by controlling the opening and closing time of the filling valve 8.

[0026] In one embodiment, a cleaning ball 14 is provided at the end of the drug inlet pipe 11 for cleaning the inside of the liquid storage tank 4. The cleaning ball 14 is rotatable and water pressure drives the cleaning ball 14 to rotate and spray the inside of the liquid storage tank 4 to clean it.

[0027] In one embodiment, the top of the liquid storage tank 4 is provided with a sealing cover 41. The sealing cover 41 includes a first sealing cover that is sealed and fixedly connected to the liquid storage tank 4, and a second sealing cover that is sealed and fixedly connected to the drug inlet pipe 11. When the liquid storage tank 4 is cleaned and sterilized, the second sealing cover is moved downward and sealed and fixedly connected to the liquid storage tank 4.

[0028] In one embodiment, the liquid storage tank 4 and the filling head 9 are fixedly mounted on the rotating disk 16 of the filling machine.

[0029] In one embodiment, reference Figure 3 A rotary valve 17 is provided between the drug inlet pipe 11 and the storage tank 4. The hollow part of the rotary valve 17 is fixedly connected to the drug inlet pipe 11. The moving part of the rotary valve 17 is fixedly connected to the sealing cover 41 of the storage tank 4. A level gauge 10 is provided on the storage tank 4 to sense the position of the drug liquid 3 inside the storage tank 4. The level gauge 10 is connected to the control valve of the drug inlet pipe 11. The level gauge 10 and the control valve of the drug inlet pipe 11 cooperate to ensure that the drug liquid 3 in the storage tank 4 fluctuates at a set height position, thereby ensuring that the amount of drug liquid 3 flowing through the filling valve 8 per unit time is constant. The amount of drug liquid 3 filled into the bag is determined by controlling the opening and closing time of the filling valve 8. The rotary valve 17 can be fixed on the filling machine frame 13 or the factory building.

[0030] In one embodiment, a pressure regulator 18 is connected to the top of the storage tank 4. The pressure regulator 18 ensures that the pressure inside the storage tank 4 is constant, thereby ensuring that the amount of medicine 3 passing through the filling valve 8 per unit time is constant. The amount of medicine 3 filled into the bag is determined by controlling the opening and closing time of the filling valve 8.

[0031] In one embodiment, the rotating disk 16 is provided with multiple filling bags corresponding to the filling head 9. Each filling bag includes a bag inlet 1 and a bag film 2. The bag inlet 1 is adapted to a filling valve 8, and an air inlet valve controls the amount of gas injected into the bag to blow open the bag film 2. The rotating disk 6 is provided with multiple filling heads, and multiple filling bags are provided corresponding to each filling head. The number of connecting tubes corresponds to the number of filling heads. The number of filling heads can be set according to production capacity requirements.

[0032] A flexible bag filling process is also provided, which includes using the above-mentioned flexible bag filling system and includes the following steps:

[0033] S1. Before filling the medicine liquid 3, the air inlet valve is opened to blow open the two layers of bag film 2 of the empty filling bag, and the empty filling bag is filled with gas; there is no suction between the two layers of bag film 2, and the medicine liquid 3 will enter the bag film 2 without resistance.

[0034] S2. Filling valve 8 opens, and liquid medicine 3 enters the empty bag without resistance. The pressure or height of liquid medicine 3 in storage tank 4 is constant. Liquid medicine 3 in the filling bag is measured by time, eliminating the need to use an expensive mass flow meter 6 for measurement.

[0035] Beneficial effects of this utility model

[0036] This utility model provides a soft bag filling system that solves the problem of needing a mass flow meter 6 for measurement in existing large-volume infusion soft bag filling systems, reduces the cost of the filling system, improves the cost-effectiveness of large-volume infusion soft bag filling machines, and thus improves the efficiency of large-volume infusion production.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention.

Claims

1. A flexible bag filling system, characterized in that, The device includes a storage tank, a connecting pipe connected to the storage tank, and a filling valve, an air inlet valve, and a filling head sequentially arranged at the lower end of the connecting pipe. The air inlet valve controls the amount of gas injected into the bag. The filling valve and the air inlet valve are fixedly connected to the filling head, and the filling valve controls the amount of liquid medicine injected into the bag. A medicine inlet pipe is provided at the top of the storage tank, and a medicine inlet pipe control valve is provided on the medicine inlet pipe to control the medicine entering the storage tank. A level gauge is provided on the storage tank to sense the position of the medicine in the storage tank, and the level gauge is connected to the medicine inlet pipe control valve.

2. The soft bag filling system of claim 1, wherein, The end of the drug inlet tube is equipped with a cleaning ball for cleaning the inside of the storage tank.

3. The soft bag filling system of claim 1, wherein, The top of the storage tank is equipped with a sealing cap.

4. The soft bag filling system of claim 1, wherein, The storage tank and filling head are fixedly installed on the rotating disc of the filling machine.

5. The soft bag filling system of claim 1, wherein, A rotary valve is provided between the drug inlet pipe and the storage tank. The hollow part of the rotary valve is fixedly connected to the drug inlet pipe, and the moving part of the rotary valve is fixedly connected to the sealing cover of the storage tank.

6. The soft bag filling system of claim 1, wherein, A pressure regulator is connected to the top of the liquid storage tank, which ensures that the pressure inside the liquid storage tank remains constant.

7. The soft bag filling system of claim 4, wherein, The rotating disk is provided with multiple filling heads, and multiple filling bags are provided corresponding to the filling heads. The number of connecting tubes is provided corresponding to the number of filling heads.

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