SU937513A1 - Device for automatically controlling pressing process on screw presses - Google Patents

Description

(5) DEVICE FOR AUTOMATIC CONTROL AND REGULATION OF THE PRESSING PROCESS

one

The invention relates to the wine industry and can be used to control and regulate the pressing process on screw presses.

A device for automatically controlling the pressing process on screw presses according to the coefficient of extraction of the liquid phase, comprising a collecting vessel located under the discharge nozzle of the press cone chamber, and a primary converter are known. The coefficient of extraction of the liquid phase is determined by the flow rate of the wort fraction flowing from the chamber of the stop cone, which is determined by the time of filling the vessel of a certain volume U3 "

However, with the help of a known device, the process of the pressing process is monitored, but it cannot be used as a primary converter of the AVN PRESSES system.

because the pressing process is continuous and the wort consumption is determined periodically.

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Conventional continuous flow meters are not applicable here, since the wort from the cone chamber flows by gravity without pressure. Used in similar cases (target flow meters

The 10 variable level can not be used here either, since the flow rate is very small (0.5-1.5-l / min), therefore the outflow opening should be 2-4 mm in diameter. It is immediately clogged with solid particles contained in the wort, and the flow meter is rendered inoperable. If you increase the opening of the discharge, then at these costs the change in the level is practically catch

20 is impossible, therefore, the known device does not provide sufficient accuracy in controlling the pressing process.

39

The purpose of the invention is to improve the accuracy of control,

This goal is achieved by the fact that in the device for automatic control of the pressing process on screw presses according to the coefficient of extraction of the liquid phase, containing a collecting vessel, located under the discharge nozzle of the press cone chamber, and the primary converter, the latter is designed as a variable level flow meter, the outlet of which is a gas lift.

FIG. 1 shows a device for automatically controlling the pressing process on screw presses; in fig. 2 and 3 show graphs illustrating the operation of the device.

The device for automatic control of the pressing process on screw presses contains a collecting vessel 1 located under the discharge nozzle 2 of the chamber 3 of the press cone, through the perforation k of the snare drum of which the wort fraction flows.

A primary transducer is installed in the collecting vessel. It is made in the form of a variable level flow meter, the outlet of which is a gas lift with a pressure pipe 5, a shoe 6 and an air pipe 7 to which compressed air is supplied through a regulating valve 8 and a rotameter 9. For level measurement in the collecting vessel, a hydrostatic level gauge is used, consisting of a piezometric tube 10 and an air flow regulator 11

The device works as follows.

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The wort entering the collecting vessel is pumped by an airlift. With increasing flow, the level of wort in the collecting vessel increases, and, consequently, the air pressure at the outlet of the level gauge, which is fed to the secondary device and the pressing process controller.

The static and dynamic characteristics of the primary converter, obtained during tests, are presented in FIG. 2 and 3

In the absence of automatic control and regulation of the wort content in the squeeze fluctuates within 5 dal per ton, the use of the automatic control and regulation system will reduce the wort sludge in the squeeze by about 30, which corresponds to an economic effect of 20 thousand rubles for a plant with a productivity of 20 thousand tons of grapes season.

Claims (1)

1. USSR author's certificate No. 662582, cl. C 12 G 1/02, 1977. To the secondary device, to reg. Fi9.4