Soft bag filling system and filling process

Abstract

The invention provides a soft bag filling system and process. The soft bag filling system comprises a liquid storage tank, a connecting pipe communicating with the liquid storage tank, and a filling valve, an air inlet valve and a filling head which 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] The invention relates to the technical field of soft bag filling systems, and in particular to a soft bag filling system and a filling process. Background Art

[0002] Since the two layers of film of the large infusion soft bag are tightly attached together before filling, the existing large infusion soft bag filling process is pressurized filling to ensure that the liquid medicine is filled into the bag. Figure 1 The figure shows that it mainly consists of a liquid 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 that 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 liquid medicine 3 breaks through the tightly attached membrane 2 and enters the bag, which is measured by the mass flow meter 6. When the filling volume is reached, the mass flow meter 6 sends a signal, and the filling valve 8 closes to complete the metering and filling.

[0003] Due to the suction of the two layers of film of the empty bag, resistance is needed to open it. It is affected by the tension of the film manufacturer during film blowing and slitting, the viscosity of the film surface material and the ambient temperature. Therefore, the resistance to opening each bag is different. That is, the flow rate of the liquid medicine flowing through the filling valve per unit time when the bag is opened is different due to the different resistance of the bag. Therefore, it is impossible to measure it by time, so only mass flowmeter can be used for measurement. However, mass flowmeter is expensive, and large infusion is ordinary liquid medicine. The high cost of filling equipment brings a heavy burden to the production enterprises. Summary of the invention

[0004] In view of the defects in the prior art, the present invention provides a soft bag filling system and a filling process to solve the problems in the above-mentioned background technology.

[0005] The present invention provides a soft bag filling system, comprising a liquid storage tank, a connecting pipe connected to the liquid storage tank, and a filling valve, an air intake valve and a filling head which are sequentially arranged at the lower end of the connecting pipe; the air intake valve controls the amount of gas flushed into the bag; the filling valve, the air intake valve and the filling head are fixedly connected, and the filling valve controls the amount of liquid medicine poured into the bag; a medicine inlet pipe is arranged on the top of the liquid storage tank, and a medicine inlet pipe control valve for controlling the medicine liquid to enter the liquid storage tank is arranged on the medicine inlet pipe; a liquid level meter for sensing the position of the medicine liquid in the liquid storage tank is arranged on the liquid storage tank, and the liquid level meter is connected to the medicine inlet pipe control valve.

[0006] In one embodiment, a cleaning ball is provided at the end of the medicine inlet pipe for cleaning the liquid storage tank.

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

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

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

[0010] In one embodiment, a pressure regulator is communicated and provided at the top of the liquid storage tank, and the pressure regulator ensures that the pressure in the liquid storage tank is constant.

[0011] In one embodiment, a plurality of filling heads are provided on the rotating disk, a plurality of filling bags are provided corresponding to the filling heads, and the number of the connecting pipes corresponds to the filling heads.

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

[0013] S1. Before filling the liquid medicine, the air inlet valve is opened to blow open the two-layer bag films of the empty filling bag, and the empty filling bag is filled 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 liquid storage tank is constant, and the liquid medicine in the filling bag is metered by time.

[0015] Advantages of the present invention

[0016] The present invention provides a soft bag filling system and a filling process, which solve the problem that a mass flowmeter must be used for metering in the existing large infusion soft bag filling system, reduce the cost of the filling system, improve the cost performance of the large infusion soft bag filling machine, and thus improve the production efficiency of large infusions. Description of the drawings

[0017] Figure 1 is a schematic structural diagram of the existing filling system of the present invention;

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

[0019] Figure 3 is a schematic structural diagram of Embodiment 2 of the present invention;

[0020] Among them, 1. Bag interface; 2. Bag film; 3. Liquid medicine; 4. Liquid storage tank; 41. Sealing cover; 5. Manual valve; 6. Mass flowmeter; 7. Connecting pipe; 8. Filling valve; 9. Filling head; 10. Liquid level gauge; 11. Medicine inlet pipe; 12. Medicine inlet pipe control valve; 13. Filling machine frame; 14. Cleaning ball; 15. Air inlet control valve; 16. Rotating disk; 17. Rotary valve; 18. Pressure regulator. Detailed implementation manners

[0021] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several variations and improvements may be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0022] Reference Figure 2 and Figure 3

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] The present invention provides a soft bag filling system, referring to Figure 2 , including a liquid storage tank 4, a connecting pipe 7 connected to the liquid storage tank 4, and a filling valve 8, an air inlet valve and a filling head 9 arranged at the lower end of the connecting pipe 7 in sequence; the air inlet valve controls the amount of gas flushed into the bag; the filling valve 8, the air inlet valve and the filling head 9 are fixedly connected, and the filling valve 8 controls the amount of liquid medicine 3 poured into the bag; a drug inlet pipe 11 is arranged on the top of the liquid storage tank 4, and a drug inlet pipe 11 control valve for controlling the liquid medicine 3 to enter the liquid storage tank 4 is arranged on the drug inlet pipe 11; a liquid level meter 10 for sensing the position of the liquid medicine 3 in the liquid storage tank 4 is arranged on the liquid storage tank 4, the liquid level meter 10 is connected to the drug inlet pipe 11 control valve, and the liquid level meter 10 cooperates with the drug inlet pipe 11 control valve to ensure that the liquid medicine 3 in the liquid storage tank 4 fluctuates at a set height position, thereby ensuring that the amount of liquid medicine 3 flowing through the filling valve 8 per unit time is constant, and the amount of liquid medicine 3 poured into the bag is determined by controlling the time of switching the filling valve 8.

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

[0027] In one embodiment, a sealing cover 41 is provided on the top of the liquid storage tank 4, and the sealing cover 41 includes a first sealing cover sealed and fixedly connected to the liquid storage tank 4, and a second sealing cover sealed and fixedly connected to the drug inlet pipe 11. When the first sealing cover and the liquid storage tank 4 are 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 a rotating disk 16 of the filling machine.

[0029] In one embodiment, reference Figure 3 A rotary valve 17 is provided between the medicine feeding pipe 11 and the liquid storage tank 4. The medicine feeding pipe 11 is fixedly connected to the hollow part of the rotary valve 17. The movable part of the rotary valve 17 is fixedly connected to the sealing cover 41 of the liquid storage tank 4. The liquid storage tank 4 is provided with a liquid level meter 10 for sensing the position of the liquid medicine 3 in the liquid storage tank 4. The liquid level meter 10 is connected to the control valve of the medicine feeding pipe 11. The liquid level meter 10 cooperates with the control valve of the medicine feeding pipe 11 to ensure that the liquid medicine 3 in the liquid storage tank 4 fluctuates at a set height position, thereby ensuring that the amount of liquid medicine 3 flowing through the filling valve 8 per unit time is constant, and the amount of liquid medicine 3 poured into the bag is determined by controlling the time of switching 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 provided at the top of the liquid storage tank 4, and the pressure regulator 18 ensures that the pressure in the liquid storage tank 4 is constant, thereby ensuring that the amount of liquid medicine 3 passing through the filling valve 8 per unit time is constant, and then the amount of liquid medicine 3 poured into the bag is determined by controlling the time of opening and closing the filling valve 8.

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

[0032] A soft bag filling process is also provided, comprising using the soft bag filling system described above, comprising the following steps:

[0033] S1. Before filling the liquid medicine 3, the air inlet valve is opened to blow open the two-layer bag films 2 of the empty filling bag, and the empty filling bag is filled with gas. There is no suction force between the two-layer bag films 2, and there will be no resistance when the liquid medicine 3 enters the bag film 2.

[0034] S2. The filling valve 8 is opened. Since there is no resistance for the liquid medicine 3 to enter the empty bag, the pressure or height of the liquid medicine 3 in the liquid storage tank 4 is constant, and the liquid medicine 3 in the filling bag is metered by time, without the need to use an expensive mass flowmeter 6 for metering.

[0035] Advantages of the present invention

[0036] The present invention provides a soft bag filling system and a filling process, which solve the problem that a mass flowmeter 6 must be used in the existing large infusion soft bag filling system, reduce the cost of the filling system, improve the cost performance of the large infusion soft bag filling machine, and thus improve the production efficiency of large infusions.

[0037] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms 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 circumstances.

[0038] The above content is a further detailed description of the present invention in combination with specific implementation manners, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can still be made.

Claims

1. A flexible bag filling system, characterized in that, It includes a liquid storage tank, a connecting pipe communicated with 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 flushed into the bag; the filling valve and the air inlet valve are fixedly connected with the filling head, and the filling valve controls the amount of liquid medicine poured 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 the liquid medicine to enter the liquid storage tank is arranged on the medicine inlet pipe; a liquid level gauge for sensing the position of the liquid medicine in the liquid storage tank is arranged on the liquid storage tank, and the liquid level gauge is connected with the medicine inlet pipe control valve.

2. The soft bag filling system according to claim 1, wherein, A cleaning ball is arranged at the end of the medicine inlet pipe for cleaning inside the liquid storage tank.

3. The soft bag filling system according to claim 1, characterized in that, A sealing cover is arranged at the top of the liquid storage tank.

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

5. The soft bag filling system according to claim 1, wherein A rotary valve is arranged between the medicine inlet pipe and the liquid storage tank. The medicine inlet pipe is fixedly connected with the hollow part of the rotary valve, and the movable part of the rotary valve is fixedly connected with the sealing cover of the liquid storage tank.

6. The soft bag filling system according to claim 1, characterized in that A pressure regulator is communicated and arranged at the top of the liquid storage tank, and the pressure regulator ensures the constant pressure in the liquid storage tank.

7. The soft bag filling system according to claim 4, wherein, A plurality of filling heads are arranged on the rotating disk, a plurality of filling bags are arranged corresponding to the filling heads, and the number of the connecting pipes corresponds to the number of the filling heads.

8. A soft bag filling process, characterized in that, It includes the soft bag filling system according to any one of claims 1-7, and comprises the following steps: S1. Before filling the liquid medicine, the air inlet valve is opened to blow open the two-layer bag films of the empty filling bag, and the empty filling bag is filled with gas. S2. The filling valve is opened, the liquid medicine enters the empty bag without resistance, the pressure or height of the liquid medicine in the liquid storage tank is constant, and the liquid medicine in the filling bag is measured by time.

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