Systems for the filter press process and its control

Abstract

The invention relates to a filter pressing technology and control system. The filter pressing technology and control system comprises filter pressing machine sets, a feeding system, a flushing water system, a material discharging and liquid draining system, a compressed air system and an electrical control system, and is characterized in that a plurality of groups of feeding pumps are arranged at the outlet of a feeding stirring groove of the feeding system, each feeding pump is connected with each filter pressing machine in each filter pressing machine set through a spherical reversing check valve, a plurality of flushing water pumps are arranged at the outlet of a flushing water tank of the flushing water system, each filter pressing machine set share one flushing water pump, flushing water inlet pipes in each filter pressing machine set are connected to flushing water pump water outlet pipes in parallel, an air storage tank for an instrument and an air storage tank for blowing and drying are arranged at the outlet of an air compressor of the compressed air system, blowing and drying air inlet pipes of the filter pressing machines are connected to the outlet pipeline of the air storage tank for blowing and drying in parallel, and air inlet pipes for the instrument of the filter pressing machines are connected to the outlet pipeline of air handling equipment in parallel. The system is low in equipment and capital construction investment, high in operation rate, simple to operate and high in degree of automation.

Description

technical field [0001] The invention relates to a solid powdery material dehydration technology, in particular to a system used for a press filter process and its control. Background technique [0002] When the particle size of the material to be processed is too fine, or the material contains a lot of mud, or the filter product is required to have low moisture content, the filter press has become the preferred filter equipment because it adopts positive pressure filtration and has triple functions of diaphragm extrusion and blowing drying. The field of solid powder dehydration has been increasingly widely used, but it has the following problems: 1. Most of the current processes use a filter press corresponding to a feeding pump, which requires high equipment investment and the feeding pump does not have a backup; 2. Most of the flushing water pumps use large-flow low-lift pumps, which consume a lot of water but the filter cloth is not rinsed thoroughly; 3. Most of the disch...

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Problems solved by technology

[0002] When the particle size of the material to be processed is too fine, or the material contains a lot of mud, or the filter product is required to have low moisture content, the filter press has become the preferred filter equipment because it adopts positive pressure filtration and has triple functions of diaphragm extrusion and blowing drying. The field of solid powder dehydration has been increasingly widely used, but it has the following problems: 1. Most of the current processes use a filter press corresponding to a feeding pump, which requires high equipment investment and the feeding pump does not have a backup; 2. Most of the flushing water pumps use large-flow low-lift pumps, which consume a lot of water but the filter cloth is not rinsed thoroughly; 3. Most of the discharge and liquid discharge systems use independent systems, which are complex and cumbersome to operate; 4. Air blowing and drying Most of the air used by instruments shares a set of air systems, and there is no relevant oil removal, water removal, and dust removal equipment, resulting in short service life of the instrument and frequent instrument replacement; 5. Most filter press systems do not connect all valves and other control equipment to the degree of automation A high system with decentralized control, cumbersome operation and low equipment operation rate

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