CN216375091U - Liquid inlet system for filling machine and corresponding filling machine - Google Patents
Liquid inlet system for filling machine and corresponding filling machine Download PDFInfo
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- CN216375091U CN216375091U CN202122657860.0U CN202122657860U CN216375091U CN 216375091 U CN216375091 U CN 216375091U CN 202122657860 U CN202122657860 U CN 202122657860U CN 216375091 U CN216375091 U CN 216375091U
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- liquid
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Abstract
The utility model discloses a liquid inlet system (1) for a filling machine (2), wherein the liquid inlet system (1) comprises: a dispensing unit (11) for dispensing a liquid to the container to be filled; a buffer tank (12) for buffering the liquid to be filled, the buffer tank (12) being connected to the liquid separation unit (11) via a first flow path (13); and a second flow path (14) for supplying cleaning fluid to the buffer tank (12); wherein the buffer tank (12) is configured to be adjustable in height relative to the dispensing unit (11). A corresponding filling machine (2) comprising such an intake system (1) is also disclosed. According to some embodiments of the utility model, a filling machine may be provided with better performance, in particular, complicated adjustments of the suck-back procedure of the filling pump and dripping problems may be reduced or avoided.
Description
Technical Field
The utility model relates to a liquid inlet system for a filling machine and a corresponding filling machine.
Background
In the filling field, in particular in the field of pharmaceutical filling, filling machines are generally used for filling pharmaceutical substances into corresponding containers, for example glass bottles. After filling, the container may be sealed to enclose the medicament in the container.
In the known filling machines, the buffer tank for buffering the liquid to be filled is fixed in position. During filling, there may be a level difference between the liquid level of the buffer tank and the filling pump, for example up to 200 mm. Therefore, in the design process of the filling procedure, the suck-back procedure of the filling pump needs to be designed to avoid the influence of the filling back pressure on the filling precision.
However, the back suction procedure of the filling pump is difficult to adjust. Moreover, the suck-back procedure of the filling pump does not completely solve the dripping problem. In the prior art, a large number of additional designs and procedures are required to avoid the dripping problem, increasing the complexity of the system and bringing many risks to implementation.
On the other hand, for a plunger pump filling system with on-line cleaning and on-line sterilization, the buffer tank needs to be higher than the liquid separation unit due to the requirements of sterilization, drainage and venting, which may adversely affect the suck-back programming of the filling pump as described above.
Therefore, there is a pressing need for improvements to existing filling machines.
SUMMERY OF THE UTILITY MODEL
The object of the present invention is to provide an improved feed system for filling machines and a corresponding filling machine.
According to one aspect of the present invention, there is provided an inlet system for a filling machine, the inlet system comprising: a dispensing unit for dispensing a liquid to a container to be filled; the buffer tank is used for buffering liquid to be filled and is connected with the liquid separation unit through a first flow path; and a second flow path for supplying cleaning fluid to the buffer tank; wherein the buffer tank is configured to be adjustable in height relative to the dispensing unit.
According to an alternative embodiment of the utility model, the first flow path is connected between the bottom of the buffer tank and the liquid separation unit; and/or the second flow path is connected to the top of the surge tank; and/or the feed liquor system still includes weighing sensor, the liquid level of the liquid of treating the filling in the buffer tank passes through weighing sensor indirectly confirms.
According to an alternative embodiment of the utility model, the first flow path comprises at least one length of a first hose; and/or the second flow path comprises at least one section of a second hose; and/or the load cell is used to measure the change in weight of the surge tank.
According to an alternative embodiment of the utility model, the height of the buffer vessel is adapted to be adjusted by means of a lifting device; and/or the liquid separation unit is configured as a liquid separation tube.
According to an alternative embodiment of the utility model, the buffer tank is fixed on the lifting device and is suitable for lifting movement along with the lifting device; and/or the lifting device is configured as an automatically operated lifting device; and/or the lifting device is configured to be adapted to be secured to a table of the filling machine.
According to an alternative embodiment of the utility model, the lifting device is configured as a telescopic lifting device; and/or the lifting device is configured to be communicatively coupled to a controller for a filling machine to receive lifting control of the controller.
According to an alternative embodiment of the utility model, the lifting device comprises a pneumatic telescopic lifting device and/or a hydraulic telescopic lifting device.
According to an alternative embodiment of the utility model, the inlet system has at least a first operating condition in which the buffer tank is at a first height position above the liquid separation unit and a second operating condition different from the first operating condition in which the buffer tank is at a second height position lower than the first height position.
According to an alternative embodiment of the utility model, the first operating state is an online cleaning state and/or a pre-filling state for pre-filling the buffer tank with the liquid to be filled; and/or the second operating state is a filling state; and/or in the second working state, the liquid level of the liquid to be filled in the buffer tank is adapted to the height of the liquid separation unit.
According to an optional embodiment of the utility model, in the second working state, a height difference between the liquid level of the liquid to be filled in the buffer tank and the liquid separation unit is within a predetermined threshold value.
According to another aspect of the present invention, there is provided a filling machine comprising an inlet system according to the above.
According to an alternative embodiment of the utility model, the filling machine is a vial filling machine, a pre-filled needle filling machine or an ampoule filling machine; and/or the filling machine is configured as a filling and sealing machine.
According to an alternative embodiment of the utility model, the controller of the filling machine is configured and adapted to automatically adjust the height of the buffer vessel relative to the dispensing unit in dependence on the operating state of the filling machine.
According to some embodiments of the utility model, a filling machine may be provided with better performance, in particular, complicated adjustments of the suck-back procedure of the filling pump and dripping problems may be reduced or avoided.
Drawings
The principles, features and advantages of the present invention may be better understood by describing the utility model in more detail below with reference to the accompanying drawings. The drawings comprise:
fig. 1 shows a schematic diagram of an inlet system of a filling machine for filling liquids, in particular liquid medicaments, according to an exemplary embodiment of the present invention.
Fig. 2 shows a perspective view of a filling machine according to an exemplary embodiment of the present invention.
Fig. 3 shows another operating state of the intake system shown in fig. 1, in which the height of the buffer vessel is reduced compared to fig. 1.
Fig. 4 shows another operating state of the inlet system in the filling machine shown in fig. 2, the height of the buffer vessel also being reduced compared to fig. 2.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and exemplary embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the scope of the utility model.
Fig. 1 shows a schematic diagram of an inlet system of a filling machine for filling liquids, in particular liquid medicaments, according to an exemplary embodiment of the present invention.
Before proceeding with the detailed description, it is noted that for the sake of clarity, the utility model will be described mainly with respect to the parts concerned, while the description of other possible parts has been omitted or simplified.
As shown in fig. 1, the liquid inlet system 1 may include at least: a dispensing unit 11 (which may be configured, for example, as a dispensing tube) for dispensing a liquid to a container to be filled (not shown), a buffer vessel 12 for buffering the liquid to be filled, the buffer vessel 12 being connected to the dispensing unit 11 via a first flow path 13; and a second flow path 14 for supplying the cleaning fluid to the buffer tank 12, wherein the buffer tank 12 is configured to be adjustable in height with respect to the liquid separation unit 11. In other words, the height of the buffer tank 12 relative to the dispensing unit 11 may be varied as desired, rather than fixed.
According to an exemplary embodiment of the present invention, as shown in fig. 1, the first flow path 13 may be connected between the bottom of the buffer tank 12 and the liquid separation unit 11. In operation, the drug may be buffered in the buffer tank 12 by filling the drug from the bottom of the buffer tank 12 into the buffer tank 12 from the liquid separation unit 11 via the first flow path 13, and the drug buffered in the buffer tank 12 is allowed to flow reversely to the liquid separation unit 12 for distribution during filling, so that relatively stable and consistent filling can be achieved by controlling the liquid level of the drug in the buffer tank 12.
Fig. 1 schematically shows that the dispensing unit 11 has filling needles 111, and during filling the filling needles 111 can be inserted into the containers to be filled (e.g. vial, ampoule, etc.).
According to an exemplary embodiment of the present invention, as shown in fig. 1, the second flow path 14 may be connected to the top of the buffer tank 12. The second flow path 14 may supply the cleaning fluid to a spraying device 121 disposed in the buffer tank 12 to be sprayed to clean the inner space of the buffer tank 12, and the sprayed liquid may flow through the bottom of the buffer tank 12 to the liquid separating unit 11 via the first flow path 13 and then to other possible members (not shown) to be cleaned. It will be appreciated that cleaning is essential for drug filling, e.g. to avoid cross-contamination. Cleaning is also to some extent understood to include sterilization operations.
According to an exemplary embodiment of the utility model, the inlet system 1 may further comprise a load cell (not shown), by means of which the level of the liquid to be dispensed in the buffer tank 12 may be indirectly determined. Those skilled in the art will appreciate that for a given fill level and a given buffer tank 12, the level of liquid in the buffer tank 12 corresponds to the weight of the buffer tank 12 (including the weight of the medication) on a one-to-one basis, and thus, the level of liquid in the buffer tank 12 may be determined indirectly by a load cell. For medicaments that are prone to foaming, this is very advantageous, since sensors that directly detect the level often do not accurately measure the level of such medicaments.
It will also be appreciated by those skilled in the art that, in principle, if the buffer vessel 12 is fixed to another device, the change in the liquid level in the buffer vessel 12 can also be derived by measuring the change in weight of the buffer vessel 12 in conjunction with the other device, thereby allowing the load cell to be placed at any suitable location depending on the circumstances.
To accommodate the up and down movement of the buffer vessel 12, the first flow path 13 may comprise at least one length of first flexible tubing 131 as a simple embodiment. Similarly, the second flow path 14 may include at least one length of a second hose 141.
As shown in fig. 1, the first flow path 13 may also include a valve 132 to control the flow characteristics (e.g., on-off) of the first flow path 13 as desired.
Fig. 2 shows a perspective view of a filling machine 2 according to an exemplary embodiment of the present invention (wherein some components may be omitted for clarity).
According to an exemplary embodiment of the present invention, as shown in fig. 2, the height of the buffer vessel 12 is adapted to be adjusted by the lifting device 15.
As can also be seen in fig. 2, as an exemplary embodiment, the buffer vessel 12 is fixed to the lifting device 15 and adapted to move up and down with the lifting device 15.
Preferably, the lifting device 15 may be configured as an automatically operated lifting device, i.e. it may automatically effect lifting under the control of a control signal. This offers various possibilities for automatic flexible control of the operation of the entire filling machine, so that the position of the buffer vessel 12 can be better matched to the respective operation for better performance.
As shown in fig. 2, the lifting device 15 may be configured to be secured to a table 21 of the filling machine 2.
According to an exemplary embodiment of the present invention, the lifting device 15 may be configured as a telescopic lifting device, in particular as a pneumatic telescopic lifting device and/or as a hydraulic telescopic lifting device, as shown in fig. 2. For example, as shown in fig. 2, the lifting device 15 may include a cylinder 151 and a piston rod 152 linearly movable in the cylinder 151, and the surge tank 12 is fixed to the piston rod 152.
In particular, according to an exemplary embodiment of the present invention, the lifting device 15 may be configured to be communicatively coupled to a controller (not shown) for the filling machine 2 to receive lifting control of the controller.
Fig. 3 shows another operating state of the intake system 1 shown in fig. 1, in which the height of the buffer vessel 12 is reduced compared to fig. 1.
Fig. 4 shows another operating state of the liquid inlet system 1 in the filling machine 2 shown in fig. 2, in which the height of the buffer vessel 12 is also reduced compared to fig. 2.
To this end, according to an exemplary embodiment of the present invention, the intake system 1 may have at least a first operating condition in which the buffer tank 12 is at a first height position (as shown in fig. 1 and 3) higher than the liquid dividing unit 1, and a second operating condition different from the first operating condition in which the buffer tank 12 is at a second height position (as shown in fig. 2 and 4) lower than the first height position.
As described above, after cleaning and before formal filling, the buffer tank 12 is filled with the liquid to be filled. In this pre-filling step, no stable filling conditions are established yet, and therefore the filling operation is not yet formally started.
According to an exemplary embodiment of the present invention, the first operating state may be an online cleaning state and/or a pre-charge state. In the on-line cleaning state, the buffer tank 12 is higher, and the cleaning fluid injected from the top of the buffer tank 12, for example, can have better cleaning effect, and particularly, the condensed water discharge during the sterilization process can be well realized. In the pre-filling state, in particular if the liquid to be filled is filled from the bottom of the buffer tank 13, the air bubble removal can be carried out more fully with the buffer tank 12 positioned higher.
According to an exemplary embodiment of the utility model, the second operating state may be a filling state. In this case, the level of the liquid to be filled in the buffer tank 12 is preferably adapted to the height of the portion separating unit 11. This relatively reduced level difference allows the pressure within the dispensing unit 11 to be maintained relatively stably. In particular, the adverse effect of the filling pump back pressure on the filling accuracy can be reduced or even avoided. Moreover, the dripping problem can be solved to a certain extent.
In particular, in said second operating condition, the level of the liquid to be filled in the buffer tank 12 is within a predetermined threshold value of the height difference of the dispensing unit 11, and may even be flush, as indicated by the dashed line 3 in fig. 3.
Obviously, the utility model also relates to a filling machine 2, in particular a vial filling machine, a pre-filled needle filling machine or an ampoule filling machine, comprising the above-described liquid inlet system 1. In particular, the filling machine may also effect sealing after filling, in which case it may be referred to as a filling and sealing machine.
According to an exemplary embodiment of the present invention, the controller of the filling machine 2 may be configured and adapted to automatically adjust the height of the buffer tank 12 relative to the dispensing unit 11 in accordance with the operating conditions of the filling machine 2, as described above.
Although specific embodiments of the utility model have been described herein in detail, they have been presented for purposes of illustration only and are not to be construed as limiting the scope of the utility model. Various substitutions, alterations, and modifications may be devised without departing from the spirit and scope of the present invention.
Claims (13)
1. An intake system (1) for a filling machine (2), characterized in that said intake system (1) comprises:
a dispensing unit (11) for dispensing a liquid to the container to be filled;
a buffer tank (12) for buffering the liquid to be filled, the buffer tank (12) being connected to the liquid separation unit (11) via a first flow path (13); and
a second flow path (14) for supplying cleaning fluid to the buffer tank (12);
wherein the buffer tank (12) is configured to be adjustable in height relative to the dispensing unit (11).
2. The inlet system (1) for filling machines (2) according to claim 1,
the first flow path (13) is connected between the bottom of the buffer tank (12) and the liquid separation unit (11); and/or
The second flow path (14) is connected to the top of the buffer tank (12); and/or
The liquid inlet system (1) further comprises a weighing sensor, and the liquid level of the liquid to be filled in the buffer tank (12) is indirectly determined by the weighing sensor.
3. The inlet system (1) for filling machines (2) according to claim 2,
the first flow path (13) comprises at least one length of a first hose (131); and/or
The second flow path (14) comprises at least one length of a second hose (141); and/or
The load cell is used for measuring the weight change of the buffer tank (12).
4. The inlet system (1) for filling machines (2) according to claim 3,
the height of the buffer tank (12) is suitable for being adjusted through a lifting device (15); and/or
The liquid separation unit (11) is configured as a liquid separation tube.
5. The inlet system (1) for filling machines (2) according to claim 4,
the buffer tank (12) is fixed on the lifting device (15) and is suitable for lifting movement along with the lifting device (15); and/or
The lifting device (15) is configured as a self-operating lifting device; and/or
The lifting device (15) is configured to be fixed to a table (21) of the filling machine (2).
6. The inlet system (1) for filling machines (2) according to claim 5,
the lifting device (15) is configured as a telescopic lifting device; and/or
The lifting device (15) is configured to be in communicative connection with a controller for a filling machine (2) to receive lifting control of the controller.
7. The inlet system (1) for filling machines (2) according to claim 6,
the lifting device (15) comprises a pneumatic telescopic lifting device and/or a hydraulic telescopic lifting device.
8. The inlet system (1) for filling machines (2) according to any one of claims 1 to 7,
the liquid inlet system (1) at least has a first working state and a second working state different from the first working state, wherein in the first working state, the buffer tank (12) is higher than the liquid separating unit and is positioned at a first height position, and in the second working state, the buffer tank (12) is positioned at a second height position lower than the first height position.
9. The inlet system (1) for filling machines (2) according to claim 8,
the first operating state is an online cleaning state and/or a priming state for priming the buffer tank (12) with a liquid to be filled; and/or
The second operating state is a filling state; and/or
In the second operating state, the liquid level of the liquid to be filled in the buffer tank (12) is adapted to the height of the liquid separation unit (11).
10. The inlet system (1) for filling machines (2) according to claim 9,
in the second working state, the height difference between the liquid level of the liquid to be filled in the buffer tank (12) and the liquid separation unit (11) is within a preset threshold value.
11. Filling machine (2), characterized in that said filling machine (2) comprises an inlet system (1) for a filling machine (2) according to any one of claims 1 to 10.
12. The filling machine (2) according to claim 11,
the filling machine (2) is a penicillin bottle filling machine, a pre-filling needle filling machine or an ampoule bottle filling machine; and/or
The filling machine (2) is configured as a filling and sealing machine.
13. The filling machine (2) according to claim 11 or 12,
the controller of the filling machine (2) is configured and adapted to automatically adjust the height of the buffer tank (12) relative to the dispensing unit (11) in dependence on the operating state of the filling machine (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202122657860.0U CN216375091U (en) | 2021-11-02 | 2021-11-02 | Liquid inlet system for filling machine and corresponding filling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122657860.0U CN216375091U (en) | 2021-11-02 | 2021-11-02 | Liquid inlet system for filling machine and corresponding filling machine |
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| CN216375091U true CN216375091U (en) | 2022-04-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117682148A (en) * | 2024-01-31 | 2024-03-12 | 成都味科自动化设备有限公司 | Metering system and metering method for filling |
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2021
- 2021-11-02 CN CN202122657860.0U patent/CN216375091U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117682148A (en) * | 2024-01-31 | 2024-03-12 | 成都味科自动化设备有限公司 | Metering system and metering method for filling |
| CN117682148B (en) * | 2024-01-31 | 2024-05-24 | 成都味科自动化设备有限公司 | Metering system and metering method for filling |
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