Liquid filling system

Abstract

The present invention discloses a liquid medicine filling system, comprising a front weighing station, a filling station, a rear weighing station and a liquid separation container, wherein the bottom of the liquid separation container is tilted and provided with a plurality of liquid outlets along the length direction, a first needle filling rack is provided above the filling station, a first needle filling rack and a movable second needle filling rack are provided, each liquid outlet is connected to each needle filling rack through a pipeline, wherein the second needle filling rack is connected to the low-position liquid outlet at the bottom of the liquid separation container, each pipeline is provided with a filling pump, a second needle filling rack with the second needle filling rack is provided above the rear weighing station, the filling station quantitatively fills the medicine bottle, and the rear weighing station measures and detects the filling amount of the medicine bottle; the second needle filling rack is moved to the second needle filling rack, the first needle filling rack quantitatively fills the medicine bottle, the rear weighing station weighs the filled medicine bottle, and the second needle filling rack performs liquid replenishment filling on the medicine bottle whose filling amount does not meet the standard. The liquid medicine filling system has the advantages of being able to reduce the waste of liquid medicine and improve production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of food and medicine packaging machinery and equipment, and in particular to a medicine liquid filling system. Background Art

[0002] When using the existing liquid medicine filling system to fill liquid medicine, a large amount of liquid medicine is wasted. At the same time, the filling volume of liquid medicine needs to be strictly controlled, especially in the initial stage of drug filling. There is air in the pipeline of the filling device, and it is difficult to accurately and quantitatively fill the medicine during filling. The filled medicine bottles are measured. If they do not meet the filling volume standard, they must be rejected, resulting in drug waste. Moreover, at the end of a batch of liquid medicine filling process, due to the insufficient total amount of liquid medicine, when filling multiple bottles with liquid medicine, it is difficult to ensure that the filling volume in the bottles is qualified. Bottles with unqualified liquid medicine filling volume must also be rejected, which once again leads to drug waste.

[0003] The refilling pump on the post-weighing module of the existing liquid filling system is only used for refilling and filling in the production preparation stage and the tail liquid stage. During the normal production process, this filling pump does not work. For some time-sensitive liquid medicines, there is a risk of failure due to the liquid medicine in the hose of the refilling pump staying too long. The refilling pump can also be used for filling regularly during the normal production process through the program, but this will affect the working efficiency of the equipment.

[0004] During the emptying and tail liquid filling stages of the production preparation stage, the filling system is generally handled by manual intervention, which is inefficient, has a high risk of contamination, and leaves a lot of residual liquid medicine. Depending on the filling volume specifications and the number of filling heads, the general residual volume ranges from 500ml to 2000ml. If the residual liquid medicine is well utilized, based on the filling volume of the 2ml bottle specification, one batch can produce about 500-1000 bottles of qualified products. Calculated at a market value of 100 yuan per bottle, one batch can produce an additional product with a market value of 50,000 to 100,000 yuan. Calculated at 100 batches a year, an additional product with a market value of 5-10 million yuan can be produced. For high value-added biological drugs and innovative drugs, the economic benefits generated are huge. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a liquid medicine filling system which can reduce the amount of liquid medicine wasted and improve production efficiency.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A liquid medicine filling system comprises a front weighing station, a filling station, a rear weighing station and a liquid separation container, the bottom of the liquid separation container is tilted and provided with a plurality of liquid outlets along the length direction, a first filling needle rack is provided above the filling station, a first filling needle and a movable second filling needle are provided on the first filling needle rack, each of the liquid outlets is connected to each filling needle through a pipeline, wherein the second filling needle is connected to the low-position liquid outlet at the bottom of the liquid separation container, each of the pipelines is provided with a filling pump, a second filling needle rack with the second filling needle is provided above the rear weighing station, the front weighing station weighs the empty medicine bottle, the filling station performs quantitative filling on the medicine bottle, and the rear weighing station performs metering and detection on the filling amount of the medicine bottle; the second filling needle is moved to the second filling needle rack, the front weighing station weighs the empty medicine bottle, the first filling needle performs quantitative filling on the medicine bottle, the rear weighing station weighs the filled medicine bottle, and the second filling needle performs liquid replenishment filling on the medicine bottle whose filling amount does not meet the standard.

[0008] As a further improvement of the above technical solution:

[0009] The liquid medicine filling system performs the first filling, and the first filling is that the filled medicine bottles are quantitatively filled under each filling needle and the air in each pipe is discharged, and the second filling needle is used to replenish the liquid filling of the medicine bottles that do not meet the filling quantity on the second filling needle rack.

[0010] The medicine liquid filling system performs tail liquid filling, and the tail liquid filling is that the medicine bottle is quantitatively filled under the first filling needle, and the second filling needle is used to supplement the liquid filling of the medicine bottle whose filling volume does not meet the standard on the second filling needle rack.

[0011] The medicine liquid filling system performs normal filling, and the normal filling is that the second filling needle is moved to the first filling needle rack, the front weighing station weighs the empty medicine bottle, and each filling needle performs quantitative filling on the medicine bottle.

[0012] The second filling needle is moved from the first filling needle rack to the second filling needle rack or the second filling needle rack to the first filling needle rack, and each workstation has suspended the input of medicine bottles.

[0013] Among the adjacent filling needles, the front filling needle is connected to the low-position liquid outlet, and the rear filling needle is connected to the high-position liquid outlet.

[0014] The remaining part of the liquid medicine in the liquid separation container is filled with the lowest filling needle, and the lowest filling needle is a filling needle connected to the lowest liquid outlet on the liquid separation container.

[0015] The medicine liquid filling system also includes a medicine supply device, a liquid inlet valve and a buffer tank. The medicine supply device and the buffer tank are connected through a liquid inlet pipeline. The liquid inlet pipeline is provided with a liquid inlet valve. The buffer tank is connected to the liquid separation container through a connecting pipeline.

[0016] A liquid inlet is provided on the top of the liquid separation container, and the buffer tank is connected to the liquid inlet of the liquid separation container via a connecting pipeline.

[0017] The inclination angle of the liquid separation container is a, 0°<a≤10°.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] The medicine liquid filling system of the present invention comprises a front weighing station, a filling station, a rear weighing station and a liquid separation container. The bottom of the liquid separation container is tilted and provided with a plurality of liquid outlets along the length direction. A first filling needle rack is provided above the filling station. A first filling needle and a movable second filling needle are provided on the first filling needle rack. Each liquid outlet is connected to each filling needle through a pipeline, wherein the second filling needle is connected to the low-position liquid outlet at the bottom of the liquid separation container. A filling pump is provided on each pipeline. A second filling needle rack on which the second filling needle is installed is provided above the rear weighing station. The front weighing station weighs the empty medicine bottle, the filling station performs quantitative filling on the medicine bottle, and the rear weighing station performs metering and detection on the filling amount of the medicine bottle; the second filling needle is moved to the second filling needle rack, the front weighing station weighs the empty medicine bottle, the first filling needle performs quantitative filling on the medicine bottle, the rear weighing station weighs the filled medicine bottle, and the second filling needle performs liquid replenishment filling on the medicine bottle whose filling amount does not meet the standard. During the filling and emptying (emptying the gas in the pipeline before filling, also called the production preparation stage) or tail liquid filling, the second filling needle is moved from the first filling needle stand to the second filling needle stand. At this time, the first filling needle on the first filling needle stand (there are multiple first filling needles, arranged side by side along the conveying direction F of the medicine bottle) is used for quantitative filling, and the second filling needle on the second filling needle stand is used for liquid replenishment. Therefore, there is no need to add a liquid replenishment mechanism to achieve filling and emptying and tail liquid filling, which reduces manufacturing costs and increases liquid replenishment efficiency. At the same time, since the second filling needle is also connected to the liquid separation container, the liquid medicine in the liquid separation container can be completely filled during filling, reducing the amount of liquid medicine wasted. In addition, after the second filling needle on the second filling needle stand is moved back to the first filling needle stand, the liquid medicine filling system can be used for normal filling production, thereby improving production efficiency as a whole. By adopting the solution of moving the second filling needle, the second filling needle is used during the filling and emptying, normal filling production and tail liquid filling processes, so that the liquid medicine in the filling pump connected to the second filling needle will not stay for too long and become ineffective, further reducing the waste of liquid medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the liquid medicine filling system of the present invention when filling, emptying or filling tail liquid.

[0021] Figure 2 It is a schematic structural diagram of the liquid medicine filling system of the present invention during normal filling production.

[0022] Figure 3 It is a comparison diagram of the liquid medicine filling system of the present invention during tail liquid filling.

[0023] Figure 4It is a schematic structural diagram of a liquid separation container of a liquid medicine filling system of the present invention.

[0024] The symbols in the figure represent:

[0025] 1. Front weighing station; 2. Filling station; 21. First filling needle rack; 3. Rear weighing station; 31. Second filling needle rack; 4. Liquid separation container; 41. Liquid outlet; 42. Liquid inlet; 5. First filling needle; 51. Second filling needle; 6. Pipeline; 61. Filling pump; 7. Drug supply device; 8. Liquid inlet valve; 9. Buffer tank. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Figures 1 to 4 An embodiment of the liquid medicine filling system of the present invention is shown, which includes a front weighing station 1, a filling station 2, a rear weighing station 3 and a liquid separation container 4. The bottom of the liquid separation container 4 is tilted and has multiple liquid outlets 41 along the length direction. A first filling needle rack 21 is provided above the filling station 2. The first filling needle rack 21 is provided with a first filling needle 5 and a movable second filling needle 51. Each liquid outlet 41 is connected to each filling needle through a pipeline 6, wherein the second filling needle 51 is connected to the low-position liquid outlet 41 at the bottom of the liquid separation container 4. A filling pump 61 is provided on each pipeline 6, a second filling needle rack 31 with a second filling needle 51 is provided above the rear weighing station 3, the front weighing station 1 weighs the empty medicine bottles, the filling station 2 performs quantitative filling on the medicine bottles, and the rear weighing station 3 performs metering and detection of the filling amount of the medicine bottles; the second filling needle 51 is moved to the second filling needle rack 31, the front weighing station 1 weighs the empty medicine bottles, the first filling needle 5 performs quantitative filling on the medicine bottles, the rear weighing station 3 weighs the filled medicine bottles, and the second filling needle 51 performs liquid replenishment filling on the medicine bottles that do not meet the filling amount.

[0028] like Figure 1 As shown, during the filling and emptying (before filling, the gas in the pipeline 6 is emptied, also called the production preparation stage) or the tail liquid filling, the second filling needle 51 is moved from the first filling needle stand 21 to the second filling needle stand 31. At this time, the first filling needle 5 (there are multiple first filling needles 5, which are arranged side by side along the conveying direction F of the medicine bottle) on the first filling needle stand 21 is used for quantitative filling, and the second filling needle 51 on the second filling needle stand 31 is used for liquid replenishment. Therefore, there is no need to add a liquid replenishment mechanism to achieve filling and emptying and tail liquid filling, which reduces manufacturing costs and increases liquid replenishment efficiency. At the same time, since the second filling needle 51 is also connected to the liquid separation container 4, during filling, the liquid medicine in the liquid separation container 4 can be completely filled, reducing the amount of liquid medicine wasted. In addition, after the second filling needle 51 on the second filling needle stand 31 is moved back to the first filling needle stand 21, as shown in Figure 2As shown, the liquid medicine filling system can be used for normal filling production, thereby improving production efficiency as a whole. By adopting the solution of moving the second filling needle 51, the second filling needle 51 is used during the filling emptying, normal filling production and tail liquid filling process, so that the liquid medicine in the filling pump 61 connected to the second filling needle 51 will not stay for too long and become ineffective, further reducing the waste of liquid medicine.

[0029] In this embodiment, the medicine liquid filling system performs the first filling. The first filling is to quantitatively fill the medicine bottles under each filling needle and exhaust the air in each pipe 6. The second filling needle 51 is used to replenish the liquid filling of the medicine bottles that do not meet the filling quantity on the second filling needle rack 31.

[0030] In this embodiment, the medicine liquid filling system performs tail liquid filling, and the tail liquid filling is that the medicine bottle is quantitatively filled under the first filling needle 5, and the second filling needle 51 is used to replenish the liquid filling of the medicine bottle whose filling volume does not meet the standard on the second filling needle rack 31.

[0031] In this embodiment, the liquid medicine filling system performs normal filling. In normal filling, the second filling needle 51 is moved to the first filling needle rack 21, the front weighing station 1 weighs the empty medicine bottle, and each filling needle performs quantitative filling on the medicine bottle.

[0032] The liquid medicine filling system performs the first filling in the production preparation stage, specifically, the second filling needle 51 on the first filling needle rack 21 is moved to the second filling needle rack 31 above the rear weighing station 3, and then each filling needle is filled and emptied. After the emptying is completed, the medicine bottles on each station are emptied (specifically, the emptying process is to pause the bottle feeding, and the medicine bottles on the original station continue to be transported. After the filling and liquid replenishment meet the standards, they are output from the station to empty the medicine bottles on each station); after the first filling, the second filling needle 51 on the second filling needle rack 31 above the rear weighing station 3 is moved back to the first filling needle rack 21 for normal filling. Specifically, the front weighing station 1 weighs the empty medicine bottles, and the weighed empty medicine bottles are transported to the filling station On the first needle rack 2, each needle is used to quantitatively fill the empty medicine bottle; the remaining medicine liquid after normal filling is filled with tail liquid, specifically, the second needle 51 on the first needle rack 21 is moved to the second needle rack 31 above the rear weighing station 3, the front weighing station 1 weighs the empty medicine bottle, and the weighed empty medicine bottle is transported to the filling station 2, and quantitative filling is carried out under the first needle 5. The medicine bottles that do not meet the standards are then transported to the rear weighing station 3, and the second needle 51 is used to replenish the liquid and fill it, so as to achieve the minimum residual of the tail liquid filling; finally, the second needle 51 is moved from the first needle rack 21 to the second needle rack 31 or the second needle rack 31 is moved to the first needle rack 21, and each station has suspended the input of medicine bottles. It should be noted that the movement of the second needle 51 between the first needle rack 21 and the second needle rack 31 can be done manually, or it can be automatically moved by setting a mechanism such as a manipulator.

[0033] In this embodiment, among the adjacent filling needles, the front filling needle is connected to the lower liquid outlet 41, and the rear filling needle is connected to the higher liquid outlet 41. That is, among the adjacent filling needles, the liquid outlet 41 connected to the front filling needle is lower than the liquid outlet 41 connected to the rear filling needle. It can be seen that in the bottle conveying direction F, the frontmost filling needle is connected to the lowest liquid outlet 41 on the liquid separation container 4 (in this embodiment, the frontmost filling needle is the second filling needle 51). If the frontmost filling needle is moved to the second filling needle rack 31 for use as a liquid infusion, the waste of liquid medicine can be further reduced.

[0034] In this embodiment, the remaining part of the medicine liquid in the separation container 4 is filled with the lowest filling needle, and the lowest filling needle is the filling needle connected to the lowest liquid outlet 41 on the separation container 4 (in this embodiment, the lowest filling needle is the second filling needle 51), thereby reducing the number of times the medicine bottle is moved and further improving the efficiency of tail liquid filling.

[0035] In this embodiment, the liquid medicine filling system further includes a medicine supply device 7, a liquid inlet valve 8 and a buffer tank 9. The medicine supply device 7 and the buffer tank 9 are connected by a liquid inlet pipeline, and a liquid inlet valve 8 is provided on the liquid inlet pipeline. The buffer tank 9 is connected to the liquid separation container 4 by a connecting pipeline. A liquid inlet 42 is provided on the top of the liquid separation container 4, and the buffer tank 9 is connected to the liquid inlet 42 of the liquid separation container 4 by a connecting pipeline. The inclination angle of the liquid separation container 4 is a, 0°<a≤10°.

[0036] The specific steps of the filling method of this liquid medicine filling system are as follows:

[0037] S1: Figure 1 As shown, in the preparation stage: the second filling needle 51 on the first filling needle rack 21 is moved to the second filling needle rack 31 above the rear weighing station 3, the front weighing station 1 performs front weighing on the empty bottles, and then the medicine bottles are transported to the filling station 2, so that each medicine bottle on the filling station 2 is aligned with each first filling needle 5 above the filling station 2, and then the filling pump 61 connected to each first filling needle 5 is turned on to perform quantitative filling and emptying, and then each medicine bottle is transported to the rear weighing station 3, and the rear weighing station 3 and the second filling needle 51 above the rear weighing station 3 weigh and replenish liquid at the same time until the amount of medicine in each medicine bottle reaches the standard;

[0038] S2: Figure 2 As shown, normal filling production: the medicine bottles on each station are emptied (specifically, the emptying process is to stop feeding the bottles, and the medicine bottles on the original station continue to be transported. After the filling and rehydration meet the standards, they are output from the station to empty the medicine bottles on each station), the second filling needle 51 on the second filling needle rack 31 above the rear weighing station 3 is moved back to the first filling needle rack 21, the front weighing station 1 weighs the empty medicine bottles, and the weighed empty medicine bottles are transported to the filling station 2, and the empty medicine bottles are quantitatively filled through each filling needle (the first filling needle 5 and the second filling needle 51);

[0039] S3: Figure 1 and Figure 3 As shown, tail liquid filling: the medicine bottles on each station are emptied (specifically, the emptying process is to pause the bottle feeding, and the medicine bottles on the original station continue to be transported. After the filling meets the standard, they are output from the station to empty the medicine bottles on each station), the second filling needle 51 on the first filling needle rack 21 is moved to the second filling needle rack 31 above the rear weighing station 3, the front weighing station 1 weighs the empty medicine bottles, and the weighed empty medicine bottles are transported to the filling station 2, and quantitative filling is carried out under the first filling needle 5. The medicine bottles that do not meet the standard are then transported to the rear weighing station 3, and the second filling needle 51 is used for liquid replenishment filling until the liquid separation container 4 is empty.

[0040] In the early filling preparation stage, the air in the pipeline is exhausted. At this time, due to the influence of the air in the pipeline, the filling volume of the medicine bottle does not meet the standard. By weighing and replenishing the liquid at the same time, the filling volume in the medicine bottle is qualified, and no medicine waste is caused. When the amount of medicine in the liquid separation container 4 is insufficient, the filling needle (first filling needle 5) connected to the high-level liquid outlet 41 is first quantitatively filled, and the filling needle (second filling needle 51) connected to the low-level liquid outlet 41 is then refilled one by one, so as to effectively utilize the tail liquid (remaining liquid medicine) to ensure that at most one bottle of liquid medicine is not filled to standard.

[0041] like Figures 1 to 3 As shown, the specific filling method of the liquid medicine filling system is as follows (the number of filling needles is 8, which are arranged in sequence along the conveying direction F of the medicine bottle, and the filling needles are numbered A1-A8 from front to back, A1 is the second filling needle 51, and A2-A8 are the first filling needles 5):

[0042] Step 1: Filling and emptying (A1 filling needle is moved to the second filling needle rack 31, one bottle is taken at a time, quantitative filling + supplementary filling is adopted, 7 bottles are grouped together, and are numbered C1-C7 from front to back)

[0043] a. The buffer tank 9 is intermittently fed with liquid to achieve bubble-free filling in the liquid separation container 4;

[0044] b. Manually move the A1 filling needle to the second filling needle rack 31 above the rear weighing station 3;

[0045] c. Empty bottles C1-C7 enter 100% weighing at the front weighing station 1, and enter the filling station 2 after tare weighing, and stop above the filling station 2 and below the filling needles A2-A8;

[0046] d. According to the parameters of the length and diameter of the pipelines of the liquid separation container 4 and each filling needle, the filling pump 61 connected to the filling needles A2-A8 is used to continuously draw medicine to empty and fill the corresponding pipelines. If there are several groups of weighing, the emptying is performed several times, and the emptying times are controlled to ensure that the filling volume is within the target filling volume. If the filling volume is insufficient, the filling needle A1 is used to fill and weigh at the rear weighing station 3;

[0047] e. Next, another group of empty bottles C1-C7 enter the front weighing station 1 for 100% weighing. The filling amount detected by the front weighing station 1 is compared with the target filling amount, and the deviation value is calculated. When the filling amount deviation value of two consecutive groups of medicine bottles is not within the calibration range, the filling pumps 61 connected to the filling needles A2-A8 are calibrated. If the filling amount is insufficient, it is supplemented by filling and weighing at the rear weighing station 3 through the filling needle A1;

[0048] f. When the filling volume deviation values ​​of two consecutive groups of medicine bottles are within the qualified range, the entire emptying process is completed;

[0049] Step 2: Manually move the A1 filling needle to the first filling needle rack 21 and start normal filling production (8 bottles are grouped together, 8 bottles at a time, quantitative filling)

[0050] Step 3: Final liquid filling (A1 filling needle is moved to the second filling needle rack 31, 1 bottle at a time, 80% quantitative filling + rehydration, 7 bottles are grouped together, numbered C1-C7 from front to back)

[0051] a. When the buffer tank 9 weighing sensor detects the low liquid level of the medicine solution in the buffer tank 9, the tail liquid filling mode is entered;

[0052] b. Manually move the A1 filling needle to the second filling needle rack 31 above the rear weighing station 3;

[0053] c. By detecting the weight of the remaining liquid in the buffer tank 9 and the volume of the input liquid separation container 4 and the pipeline 6, combined with the current filling volume, a certain number of groups are filled normally through calculation, and approximately 50% of the remaining liquid is filled (can be set according to the filling volume);

[0054] d. After 100% weighing of the empty bottles C1-C7 at the front weighing station 1, they are transported to the filling station 2 and aligned with the filling needles A2-A8 above the filling station 2. The filling amount of each filling pump 61 connected to the filling needles A2-A8 is changed to 80% of the normal filling amount. The insufficient amount is supplemented by the filling pump 61 connected to the filling needle A1 at the rear weighing station 3 while filling and weighing;

[0055] e. If the filling volume in a filling pump 61 connected to the filling needle A2-A8 is less than 20%, the filling corresponding to the filling pump 61 is stopped and the filling is directly discarded;

[0056] f. Finally, only bottle C2 is put in. When the corresponding filling pump 61 runs for more than 30 seconds and the filling volume still does not reach the target filling volume, the whole process ends and production is stopped.

[0057] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A liquid medicine filling system, comprising a front weighing station (1), a filling station (2), a rear weighing station (3) and a liquid separation container (4), wherein the bottom of the liquid separation container (4) is arranged at an angle and is provided with a plurality of liquid outlets (41) along the length direction, a first filling needle rack (21) is provided above the filling station (2), a first filling needle (5) and a movable second filling needle (51) are provided on the first filling needle rack (21), each of the liquid outlets (41) is connected to each of the filling needles via a pipeline (6), wherein: The second filling needle (51) is connected to the low-position liquid outlet (41) at the bottom of the liquid separation container (4), and each of the pipelines (6) is provided with a filling pump (61). A second filling needle rack (31) on which the second filling needle (51) is installed is provided above the rear weighing station (3). The front weighing station (1) weighs the empty medicine bottle, the filling station (2) quantitatively fills the medicine bottle, and the rear weighing station (3) measures and detects the filling amount of the medicine bottle. The second filling needle (51) is moved to the second weighing station (3). On the needle rack (31), the front weighing station (1) weighs the empty medicine bottle, the first filling needle (5) performs quantitative filling on the medicine bottle, the rear weighing station (3) weighs the filled medicine bottle, and the second filling needle (51) performs liquid replenishment filling on the medicine bottle that does not meet the filling quantity standard; the medicine liquid filling system performs normal filling, and the normal filling is that the second filling needle (51) moves to the first filling needle rack (21), the front weighing station (1) weighs the empty medicine bottle, and each filling needle performs quantitative filling on the medicine bottle.

2. The liquid medicine filling system according to claim 1, characterized in that: The liquid medicine filling system performs a first filling, wherein the first filling is to quantitatively fill the medicine bottles below each filling needle and exhaust the air in each pipe (6), and then use the second filling needle (51) to replenish the liquid in the medicine bottles that do not meet the filling quantity on the second filling needle rack (31).

3. The liquid medicine filling system according to claim 1, characterized in that: The liquid medicine filling system performs tail liquid filling, wherein the tail liquid filling is performed by quantitatively filling the medicine bottles below the first filling needle (5), and the second filling needle (51) performs liquid replenishment filling on the second filling needle rack (31) for the medicine bottles whose filling volume does not meet the standard.

4. The liquid medicine filling system according to any one of claims 1 to 3, characterized in that: The second filling needle (51) is moved from the first filling needle rack (21) to the second filling needle rack (31) or the second filling needle rack (31) is moved to the first filling needle rack (21), and the input of medicine bottles at each workstation is suspended.

5. The liquid medicine filling system according to any one of claims 1 to 3, characterized in that: Of the adjacent filling needles, the front filling needle is connected to the lower liquid outlet (41), and the rear filling needle is connected to the higher liquid outlet (41).

6. The liquid medicine filling system according to any one of claims 1 to 3, characterized in that: The remaining portion of the liquid medicine in the liquid separation container (4) is filled using the lowest filling needle, wherein the lowest filling needle is a filling needle connected to the lowest liquid outlet (41) on the liquid separation container (4).

7. The liquid medicine filling system according to any one of claims 1 to 3, characterized in that: The drug liquid filling system further comprises a drug supply device (7), a liquid inlet valve (8) and a buffer tank (9); the drug supply device (7) and the buffer tank (9) are connected via a liquid inlet pipeline, the liquid inlet pipeline is provided with a liquid inlet valve (8), and the buffer tank (9) is connected to the liquid separation container (4) via a connecting pipeline.

8. The liquid medicine filling system according to claim 7, characterized in that: A liquid inlet (42) is provided on the top of the liquid separation container (4), and the buffer tank (9) is connected to the liquid inlet (42) of the liquid separation container (4) via a connecting pipeline.

9. The liquid medicine filling system according to any one of claims 1 to 3, characterized in that: The inclination angle of the liquid separation container (4) is a, 0°<a≤10°.

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