High-precision liquid filling system and method

Abstract

The invention discloses a high-precision liquid filling system and method. The high-precision liquid filling system is characterized in that the high-precision liquid filling system comprises liquid passages, gas passages and a public pipeline; the liquid passages include the first liquid passage and the second liquid passage which are connected in sequence, a hose and a liquid peristaltic pump are sequentially connected to the first liquid passage, and a liquid valve is connected to the second liquid passage; the gas passages include the first gas passage and the second gas passage which areconnected in sequence, a power source and a gas pressure regulation valve are sequentially connected to the first gas passage, and a gas valve is connected to the second gas passage; and the public pipeline comprises a gas / liquid tee joint, a gas / liquid pipeline, a first detection module used for detecting the liquid volume and a second detection module used for detecting the gas volume, and the gas / liquid tee joint, the gas / liquid pipeline, the first detection module and the second detection module are connected in sequence. According to the high-precision liquid filling system and method, the precision is high, contamination is prevented, the cost is low, the reliability is high, and the service life is long.

Description

technical field [0001] The invention relates to the fields of production and medical treatment, in particular to a high-precision liquid filling system and a filling method, such as the filling of iodine cap iodine liquid and the filling of in vitro diagnostic reagents. Background technique [0002] Liquid filling is very common in production and medical treatment, such as iodine cap iodine solution filling and in vitro diagnostic reagent filling. In the iodine cap iodine solution filling, the iodine cap is composed of a cap body, a sponge and an iodine solution. The sponge immersed in the iodine solution is located at the bottom of the cap body and is connected with an external short tube for disinfection and sterilization. Generally, About 0.4ML. It is extremely important to precisely control the filling volume of iodine solution. In the filling of in vitro diagnostic reagents, the filling volume of the reagents is directly related to the correctness of the test data. ...

AI Technical Summary

Problems solved by technology

The volume and precision of high-precision syringes are inversely proportional to each other, that is, the larger the volume, the lower the precision. Different syringes are required for different volumes and precisions. In addition, for large-volume syringes, the accuracy cannot meet

High-precision syringes also have the disadvantages of high cost and short life

The high-precision peristaltic pump is realized by extruding the hose. The rotation angle of the peristaltic pump and the inner and outer diameter of the hose determine its accuracy. Its accuracy is worse than that of the syringe. At the same time, the accuracy is greatly affected by the liquid difference. also has a greater impact

Due to the principle and structure of the high-precision peristaltic pump, it cannot meet the requirements for high-precision sampling or filling and the cost is high. At present, the minimum filling volume of the high-precision peristaltic pump is 0.1ml, and its price reaches 20,000

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