JPH03284390A - Sterilizer - Google Patents

Abstract

PURPOSE:To discharge a liq. to be treated staying in a hold pipe in times of emergency by providing a liq. discharge pipe having a valve capable of discharging the liq. to the outside of the system at the inlet and outlet of the pipe. CONSTITUTION:A heat exchanger 2 for indirectly heating an sterilizing a liq. to be treated, a hold pipe 3 in which the liq. leaving the heat exchanger 2 is held for a specified time and sterilized and a cooler 4 for cooling the liq. leaving the pipe 3 and then sending the liq. to the succeeding stage are provided. A liq. discharge pipe 9 having the valves 8 and 8a capable of discharging the liq. to the outside of the system is furnished at the inlet and outlet of the pipe 3, and an air supply pipe 12 having an air sterilizing filter 11 is provided at the upper end of the pipe 3 through a valve 10. Namely, the liq. in the pipe 3 is discharged in times of emergency when the sterilizing system is stopped, hence the liq. is not deteriorated, the air is introduced into the pipe 3 through the filter 11, and necessary measures are taken.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a sterilizer that has a hold pipe in its system to sterilize a liquid to be treated. sterilizer.

2. Description of the Related Art A flowchart showing an example of a conventional sterilizer is shown in FIG.

A pump 1 sends the liquid to be treated from a liquid inlet to a heat exchanger 2, where it is indirectly heated and sterilized. 3 is a hold pipe in which heated processing liquid is retained for a certain period of time to sterilize soybean milk, for example. Thereafter, it is cooled through a cooler 4 and sent to a filling machine or the like for the next process. - The heat medium sent to the universal exchanger 2 is hot water stored in a tank 5 sent by a pump 6, heated by steam supplied by an in-line heater on the way, and then supplied. After dissipating heat in the heat exchanger 2, it returns to the tank 5 and is circulated.

The liquid is smoothly fed through the sterilization system path, and after the liquid to be treated is sterilized, it is sent downstream from the liquid outlet.

Problems to be Solved by the Invention However, even if the above-mentioned sterilization system is functioning smoothly, if a problem occurs in, for example, a filling machine on the downstream side, the feeding of the liquid to be treated must be stopped. Since the conventional sterilization system did not have such an emergency response, the liquid in the hold pipe 3 remained at a high temperature for a long time.
A problem was observed in which the liquid quality deteriorated and after restarting, the liquid with the reduced quality was sent to the next process.

An object of the present invention is to solve the above-mentioned conventional problems and to provide a high-quality sterilizer in which the liquid in the hold tank is not sent to the next process in an emergency.

Means for Solving the Problems In order to achieve the above object, the present invention includes a heat exchanger that indirectly heat-sterilizes a liquid to be treated, and a liquid to be treated that exits this heat exchanger and is sterilized by being stagnant for a certain period of time. and a cooler that cools the liquid exiting the hold pipe and sends it to the next process, and valves at the inlet and outlet of the hold pipe that allow the liquid to be treated to be discharged to the outside of the system. The sterilizer was provided with a drain pipe having a sterilization filter, and an air supply pipe having an air sterilization filter via a valve at the upper end of the hold pipe.

Function: In the present invention, drain piping is provided at the inlet and outlet of the hold pipe, allowing the liquid to be discharged out of the system.In the event of an emergency, the liquid accumulated in the hold pipe can be discharged, and the A sterilization filter is installed at the top of the hold pipe to supply sterilized air.
Enables rapid drainage.

EXAMPLE Hereinafter, a sterilizer as an example will be described with reference to the drawings.

1 is a pump, 2 is a heat exchanger, 3 is a hold pipe, and 4 is a cooler, which constitute the same sterilization system path as in the conventional example. Further, on the heat medium side, 5 is a tank, 6 is a pump, and 7 is an in-line heater, which are the same as in the conventional example.

In the present invention, a drain pipe 9 having a valve 8.8a capable of discharging the liquid to be treated to the outside of the system is provided at the inlet and outlet of the hold pipe 3 for the yarn path, and a drain pipe 9 is provided above the hold pipe 3. It is characterized in that an air supply pipe 12 having an air sterilization filter 11 is provided at the end via a valve 10.

With the above configuration, if a problem occurs in the filling machine downstream of the cooler 4, the operation of the sterilization system is stopped and the liquid in the hold pipe is immediately drained to reduce the quality. The liquid was not sent to the next process.

Effects of the Invention Since the present invention has the above-described configuration, in an emergency such as when trouble occurs in the filling machine in the next process and the sterilization system is stopped, the liquid in the hold pipe can be drained and This prevents a drop in liquid quality and also allows air to be introduced into the hold pipe through an air sterilization filter, making it possible to perform extremely rapid treatment and achieve high-quality sterilization.

[Brief explanation of drawings]

FIG. 1 is a flowchart showing the apparatus of the present invention, and FIG. 2 is a flowchart showing a conventional example. 2...Heat exchanger 3...Hold pipe 4...
Cooler 8.8a... Valve 9... Drain pipe 1
0...Valve

Claims (1)

[Claims] A heat exchanger that indirectly heats and sterilizes the liquid to be treated, a hold pipe in which the liquid to be treated that exits the heat exchanger is retained and sterilized for a certain period of time, and after cooling the liquid that exits the hold pipe,
A drain pipe is provided at the inlet and outlet of the hold pipe with a valve for discharging the liquid to be treated outside the system, and a valve is provided at the upper end of the hold pipe. A sterilizer characterized in that an air supply pipe is provided with an air sterilization filter.