An automatic operation control method and system for a diaphragm filter press

Abstract

The invention provides an automatic operation control method and system for a diaphragm filter press. The method controls the diaphragm filter press according to a set strategy to automatically realize the plate closing, and determines the feed rate according to the real-time feed rate and the expected feed rate. Apply the feed rate, and feed the material from the tank to the chamber according to it; further, blow the remaining filter material in the material hole back into the tank through water replacement, and then use it according to the pressure of the diaphragm filter press. Real-time pressing pressure to determine the extrusion state is based on controlling the filter press mode to realize diaphragm extrusion, and then blow the water left in the feed hole back to the water tank through gas displacement, and control the vacuum pump to vacuum the diaphragm cavity to realize the automatic reset of the diaphragm. The squeezed filter cake is separated from the diaphragm. Adopting the technical solution of the present invention can effectively realize the fully automatic control of the membrane filter press, reduce the consumption of manpower, material resources and time, and can detect abnormal information in the operation process in time, greatly promoting the automation of the filter press process develop.

Description

technical field [0001] The invention relates to the technical field of operation control of filter press equipment, in particular to an automatic operation control method and system for a diaphragm filter press. Background technique [0002] Diaphragm filter press is a mechanical equipment widely used in petroleum, chemical, pharmaceutical, sugar, coal washing, oil, printing and dyeing, brewing, ceramics, mining metallurgy, sludge treatment and other fields. The cavity formed by the elastic diaphragm installed between them under the action of high pressure squeezes the filter material to achieve the purpose of solid-liquid separation; due to the complex mechanical structure of the diaphragm filter press, the large number of control and monitoring points, and the cavity during work It is in a high-pressure state, but as a traditional equipment with low degree of automation and high failure rate, it is difficult to meet the requirements of the current industry. In practical ap...

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Problems solved by technology

[0002] Diaphragm filter press is a mechanical equipment widely used in petroleum, chemical, pharmaceutical, sugar, coal washing, oil, printing and dyeing, brewing, ceramics, mining metallurgy, sludge treatment and other fields. The cavity formed by the elastic diaphragm installed between them under the action of high pressure squeezes the filter material to achieve the purpose of solid-liquid separation; due to the complex mechanical structure of the diaphragm filter press, the large number of control and monitoring points, and the cavity during work It is in a high-pressure state, but as a traditional equipment with low degree of automation and high failure rate, it is difficult to meet the requirements of the current industry. In practical applications, no matter whether it is running alone or in cooperation with other equipment in the filter press system, it is necessary. It is impossible to realize the fully automatic control of the membrane filter press, and there is a lack of automation, as well as time-consuming and labor-intensive deficiencies in the operation and maintenance process.

The automatic control scheme of the filter press in the prior art cannot be effectively applied to the diaphragm filter press due to the limitation of the filter press model it is aimed at. Therefore, it is urgent to provide an automatic control scheme for the diaphragm filter press. run control method

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