Filling machine with constant liquid level

Abstract

A filling machine with a constant liquid level comprises filling heads connected to a high-level liquid material bin, wherein the filling heads comprise filling pipes and back-suction pipes which arevertically arranged; the filling pipes and the back-suction pipes form sleeve structures; the filling pipes are connected to the high-level liquid material bin; and the back-suction pipes are connected to a back-suction pump. The filling machine also comprises a first lifting mechanism which is used for driving the filling heads to extend downwards into to-be-filled containers and enabling the lower end openings of the back-suction pipes to be exactly positioned on a preset safe liquid level surface, wherein the back-suction flow speed of the back-suction pipes is greater than the filling flowspeed of the filling pipes; and the first lifting system is connected to the filling heads. The filling machine with the constant liquid level can be used for automatically filling material liquid into PET bottles, and is high in efficiency. In addition, the filling machine ensures that all the to-be-filled containers are finally filled with filling liquid in a uniform manner, and avoids the situation that liquid materials overflow or the liquid level surface is too low. Moreover, the PET bottles are in open states during filling, so that the PET bottles can be prevented from expanding or shrinking.

Description

technical field [0001] The invention relates to liquid filling technology, in particular to a filling machine with fixed liquid level. Background technique [0002] After the production of liquid products is completed, the liquid needs to be filled into the bottle through the liquid filling machine. [0003] Kimchi (mixture of solid and liquid materials) is a common food that people love, and the common ones include vegetable pickles, fruit pickles, and poultry pickles. Such as: Chinese cabbage pickles, Sichuan pickles, chicken feet with pickled peppers, pickled peppers, millet peppers, jellyfish, yellow snails, fruits soaked in vinegar, etc. [0004] The characteristics of this kind of products are the mixing of irregular solids and liquids, and when filling, the liquid materials must be immersed in the solid materials to avoid oxidation and deterioration, and the filling liquid level should be relatively full to reduce the remaining air content in the container. The comm...

AI Technical Summary

Problems solved by technology

[0010] V 4 =V 1 -V 2 -V 3 , where V 1 is the inner volume of the bottle, V 2 is the total volume of solids in each bottle, V 3 Reserve a safe space between the standard product liquid level and the bottle mouth, V 4 For the volume of liquid filled in each bottle, due to V 1 with V 3 is a basic fixed constant, V 2 is an uncertain quantity, so V 4 It is also a variable amount. If a fixed amount is used for filling, a large amount of liquid will overflow the bottle mouth, causing the bottle mouth to be contaminated and affecting the seal, or the liquid level is too low to affect the product quality;

[0011] 2. If a vacuum negative pressure liquid level filling machine is used, since the material of the PET bottle is soft and easy to deform, it will be sucked in a vacuum, resulting in V 1 The volume is reduced, which eventually leads to filling failure. If a positive pressure overflow filling machine is used, it is also easy to cause the bottle to bulge due to the problem of the bottle material, resulting in V 1 The volume becomes larger, and the liquid overflows after the pressure is released

Images