Liquid filling machine

Abstract

The invention discloses a liquid filling machine and belongs to the field of filling equipment. The liquid filling machine comprises a liquid inlet pipe and a filling machine liquid storage pot, wherein the liquid inlet pipe passes through the upper end of a stander and is directly connected with the upper end of the filling machine liquid storage pot; and a filling machine liquid storage pot floating switch and a plurality of groups of air cylinders are arranged in the filling machine liquid storage pot. In the liquid filling machine, one air cylinder controls one filling head; an equal height counting mode of the inner liquid level of the liquid storage pot is not required; a constant liquid level cup type stable liquid level is adopted, so one filling head needs only one air cylinder, and the counting and filling precision is high; the filling machine is easy to process and the number of output points of an industrial control computer is small, so the cost can be reduced by over 1 / 2; the liquid filling machine is durable, the liquid level is easy to control, and the reliability is enhanced; backflow control is not needed, so the power is saved; the liquid filling machine is easy in maintenance, good in sealing property and safe; liquid is hard to volatilize during filling; the filling precision is enhanced and the filling speed is high; and the liquid filling machine can bewidely applied to rotary gas-free liquid filling machines, discharging gas-free liquid filling machines and the like.

Description

technical field [0001] The invention relates to a packaging device, in particular to a filling machine. Background technique [0002] Type here the technical field description paragraph At present, there are two main structures and control methods of common liquid filling machines: the first one is the equal height liquid level in the single-cylinder liquid storage tank and the backflow control method; the second one is External dual cylinders control each filling head, without the need for a constant metering method for the liquid level of the liquid storage tank. [0003] Among them, the first method of controlling liquid level and backflow in the single-cylinder liquid storage tank is as follows: figure 1 As shown, including frame, alarm light, touch screen, liquid inlet pipe, bypass liquid storage tank, bypass liquid storage tank float switch, sanitary explosion-proof pump, filling machine liquid storage tank, air cylinder, filling machine liquid storage tank Float swi...

AI Technical Summary

Problems solved by technology

[0013] 1) The cost of the equipment is extremely high and the structure is relatively complicated (in order to keep the liquid level consistent, the backflow device system is adopted at home and abroad, that is, a bypass liquid storage tank, a float switch of the bypass liquid storage tank, a sanitary explosion-proof pump, etc. are installed);

[0014] 2) The error of filling capacity is large: the consistency of the liquid level in the liquid storage tank of the filling machine is particularly strict. If the liquid level difference is 1mm, the filling accuracy will deviate by 1mL, and the rotary filling machine is working. The liquid storage tank is a kind of circular motion with centripetal force, so it is difficult to control the liquid level to maintain consistency, resulting in large errors in filling measurement;

[0015] 3) The industrial computer has many control points and is complex, and it is easy to be damaged when it is started frequently;

[0016] 4) The liquid is poorly sealed during the filling process, the liquid is easy to volatilize and reduce the concentration, and the safety is not high;

[0017] 5) If the machine debugging is not normal, the liquid often overflows to the ground;

[0018] 6) Large volume takes up space

[0019] 7) Due to the fast operation speed of the rotary filling machine, the centripetal force is relatively large, and the liquid level in the liquid storage tank will form a "concave" shape, and the measurement accuracy will decrease

[0032] 1) The cost of equipment is extremely high;

[0033] 2) The structure is very complicated. The number of cylinders and pneumatic solenoid valves is twice as many as that of the filling machine invented this time. Each filling head must be equipped with 2 cylinders and pneumatic solenoid valves. In addition, each filling head must be equipped with a Magnetostrictive liquid level sensor;

[0034] 3) The industrial computer has a lot of control points, and it is easy to be damaged when it is started frequently

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