Electronic liquid filling device

Abstract

The invention provides an electronic liquid filling device which is used for filling a liquid material (20) in a material cylinder (21) into a liquid container (15) and comprises a vacuumizing passage and a pressure-relieving passage. In a working state, one end of the vacuumizing passage is communicated with the liquid container (15), the other end of the vacuumizing passage is connected with a vacuum chamber (18) through a vacuum valve (26), one end of the pressure-relieving passage is communicated with the liquid container (15), and the other end of the pressure-relieving passage is connected with a pressure-relieving chamber (19) through a pressure-relieving valve (17). The pressure-relieving passage and the vacuumizing passage are two mutually independent passages. In a state when the liquid filling is finished, one end of the vacuumizing passage is arranged below the liquid level of the liquid container (15), and one end of the pressure-relieving passage is arranged above the liquid level of the liquid container (15).

Description

technical field [0001] The invention relates to an electronic liquid filling device. Background technique [0002] There are mainly two types of liquid filling devices: mechanical and electronic. Among them, the mechanical liquid filling structure is complex, it is difficult to form a complete isobaric filling, and the liquid level deviation in the container is relatively large after filling. Since the mid-1990s, companies such as KHS and KRONES have successively launched a series of electronic liquid filling devices. These electronic liquid filling devices use probes to control liquid levels, and pneumatic diaphragm valves to control liquids and gases. The switch can realize complete isobaric filling, and the liquid level control is relatively accurate, but the electrical control is complicated, the manufacturing and maintenance costs are high, and the liquid level adjustment workload is heavy when used in different bottle types. [0003] In order to overcome the defects ...

AI Technical Summary

Problems solved by technology

During the liquid suction process, due to the tension of the liquid, the liquid blocks the recovery exhaust channel with a small diameter, and the exhaust and pressure relief cannot be effectively realized.

[0004] In addition, the existing electronic liquid filling devices are only provided with one filling valve for controlling the filling flow.

When filling liquid, in order to speed up the filling, it is necessary to increase the flow rate of the filling valve, but when the flow rate is large, the gas in the liquid is easier to precipitate, which affects the accuracy of the liquid level

However, if the flow rate of the filling valve is reduced in order to ensure the filling accuracy, it will cause the filling speed to be slow, which is not conducive to the increase of output.

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