RU2241357C2 - Supersonic sterilizer for liquid products - Google Patents

Abstract

FIELD: food-processing industry, in particular, liquid sterilizing equipment.

SUBSTANCE: supersonic sterilizer has tank with discharge pump equipped with air ejector and controllable air valve equipped with air intake. Chamber is made vertical, with supersound source arranged in its lower part and liquid level sensor arranged in its upper part.

EFFECT: increased efficiency in sterilizing of liquid products.

2 cl, 1 dwg

Description

The invention relates to the food industry and is intended for sterilization of liquid products.

A prototype of the invention is an apparatus for ultrasonic sterilization of liquid products, including tanks for sterilized and sterilized liquids and a chamber with an ultrasound source (1). An ultrasound source with a rod concentrator of longitudinal vibrations is fixed in the wall of the container for sterile liquid. An axial channel is made in the longitudinal oscillation concentrator, which communicates through a nozzle and a pipeline with a container for sterile liquid. The fitting is located on the line of zero vibrations of the hub.

The disadvantage of the prototype is its low sterilization efficiency due to the work with the liquid at normal static pressure.

The present invention allows to obtain a new technical effect - increasing the efficiency of liquid sterilization.

This technical effect is achieved in that it is equipped with a discharge pump with an air ejector connected to a controllable air valve with an air filter and an air intake, and the chamber is made vertical with an ultrasound source located in its lower part and a liquid level sensor located in the upper part of the chamber; equipped with a unit for monitoring air flow, fluid level and pressure.

The drawing shows a diagram of an ultrasonic sterilizer of liquid products.

The ultrasonic sterilizer consists of a receiving tank 1 for the sterilized liquid with an intake pipe 2 and a filter 3 of mechanical impurities. The pipeline 2 is equipped with an air ejector 4, which is connected to a controllable air valve 5 with an air filter 6 and an air intake 7. The ejector 4 is connected to a discharge pump 8, and the latter with a vertical chamber 9, in the lower part of which there is an ultrasound source 10, and in the upper parts - fluid level sensor 11, at the level of which a controlled fluid pressure regulator 12 is installed with a drain pipe 13 and a receiving tank 14 for sterilized fluid. The ultrasonic sterilizer of liquid products is equipped with a unit 15 for controlling air flow, liquid level and pressure.

Ultrasonic sterilizer of liquid products works as follows.

The liquid to be sterilized from the receiving tank 1 through the intake pipe 2 through the filter 3 of mechanical impurities under the action of the suction action of the pump 8 is pumped through the air ejector 4, where air is ejected into the sterilized liquid in a certain proportion, due to the action of the controlled air valve 5. The air enters through it air intake 7 and air filter 6. Next, the liquid-air mixture is pumped 8 under pressure into the lower part of the vertical chamber 9. An ultrasound source 10 located in the lower parts of the chamber 9, creates high-intensity ultrasonic vibrations that destroy the membranes of microorganisms located in the sterilized liquid, due to which the latter die. When working in the upper part of the chamber 9 creates an air plug, which improves the conditions for the occurrence of cavitation. The processed fluid through the controlled regulator 12 through the drain pipe 13 enters the receiving tank 14. The level of the air plug is maintained slightly higher than the input of the controlled fluid pressure regulator 12 using a level sensor 11, which sends a signal to the control unit 15 of the liquid level.

The control unit 15 provides signals for opening and closing the air-operated valve 5 and the regulator 12 of the liquid pressure. The system always maintains increased static pressure.

Thus, under increased static pressure and developed cavitation at the boundary of the air plug with the liquid, an increase in sterilization efficiency is achieved.

Claims (2)

1. Ultrasonic sterilizer of liquid products, including tanks for sterilized and sterilized liquids and a chamber with an ultrasound source, characterized in that it is equipped with a discharge pump with an air ejector connected to a controllable air valve with an air filter and an air intake, and the chamber is made vertical with in its lower part an ultrasound source and a liquid level sensor located in the upper part of the chamber. 2. The ultrasonic sterilizer of liquid products according to claim 1, characterized in that it is equipped with a unit for controlling air flow, liquid level and pressure.