Controlling method for adjusting paper running of paper filter

Abstract

The invention relates to a paper feeding control method for a paper tape filter. One serial port of the computer is connected to the float placed on the upper part of the filter paper in the liquid accumulation tank through an external cable; Connected to the motor that moves the filter paper on it. By adjusting the height of the float on the filter paper and the length of the external cable of the float, it is in the best position; by adding a timing controller in the PLC program, the signal transmitted by the float is converted into a motor rotation signal, when the timer reaches the set time After that, send a stop signal to the motor to stop the motor from running. Because the present invention adopts the control mode of delayed start and stop of the motor, the number of starts of the motor is sharply reduced and the service life is improved. The immersion time and area of ​​the wire mesh chain in the grinding fluid are reduced, and the chance of corrosion is reduced. And the consumption of filter paper can be reduced by 3 times. It is suitable for the filtration of roll grinding fluid.

Description

technical field [0001] The invention belongs to a method for controlling paper feeding of a grinding fluid filter device in the machining industry, in particular to a method for controlling paper feeding of a paper belt filter that filters and recovers roll grinding fluid. Background technique [0002] In order to recover the ground metal in the grinding roll workshop of the rolling mill, a filter is used to filter the grinding fluid. At present, the more advanced one is a paper tape filter imported from abroad. The paper feeding method of this paper belt filter is mainly controlled by floating. That is, as the grinding fluid continuously flows into the accumulation tank, the solid slag in the grinding fluid will be deposited on the surface of the filter paper, and accumulate more and more. Thereby, the grinding fluid liquid level accumulated in the liquid accumulation tank is continuously raised. When the liquid level rises to a certain level, it will float the float, an...

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of the paper feeding method of the paper tape filter is that the paper feeding is only controlled by the float alone, and the paper feeding will stop immediately as soon as the float drops.

In this way, the filter paper that has deposited solid particles for a long time cannot be completely removed

Moreover, because the filter paper with deposited solid particles is not fully discharged, the water permeability of the filter paper is affected, and the liquid level of the grinding fluid cannot be sufficiently lowered, resulting in a higher frequency of floating and falling of the float, so that the moving filter paper The motor is always in the state of frequent starting, which seriously affects the service life of the motor

The rise of the liquid level also increases the unit area of ​​the wire mesh chain under the filter paper soaked in the grinding fluid and the time is too long, corrosion and rust reduce the service life

In addition, due to the unreasonable discharge method of filter paper, the consumption of filter paper increases

And for the problems referred to above, do not see the data report that has solution as yet

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