Self-sealing pressurizing plate type filter

Abstract

The invention relates to a self-sealing pressurizing plate type filter which comprises a spindle, a circular filtering disc, a slurry tank, a discharge tank, a scraper device, a discharging system anda pressurizing system. The self-sealing pressurizing plate type filter is characterized in that the discharging system comprises the discharging tank, a discharging cabin and a bolt conveyer; the pressurizing system comprises a pressurizing cabin and a central cylinder; the pressurizing cabin is arranged on the upper part of the slurry tank and the discharge tank; the central cylinder is connected with the pressurizing cabin and is sleeved on an outer edge of the spindle; an interface pipeline for compressed air is arranged on an arc-shaped cabin on the upper part of the pressurizing cabin. The self-sealing pressurizing plate type filter has the advantages of simple pressurizing mode, less space occupation, small elevation difference, low equipment and civil engineering cost, low failurerate, convenience in overhauling, capability of realizing self-sealing, low energy consumption and capability of effectively reducing moisture of filtered products.

Description

technical field [0001] The invention belongs to the technical field of solid material dehydration, and in particular relates to a self-sealing pressurized disc filter. Background technique [0002] The disc filter is widely used in the dehydration of solid powder due to its continuous operation, large processing capacity per unit area, small footprint, and low cost. Most of the current disc filters are vacuum disc filters, which rely on vacuuming to achieve dehydration. However, since the ultimate vacuum of vacuuming is an atmospheric pressure (about 0.1Mpa), the moisture filtered by it is generally high, and the moisture content of general products Between 10% and 20%, and many filtration processes now have very low moisture requirements for filtered products, and traditional vacuum disc filters cannot meet the requirements. Currently there is a pressurized disc filter, which can be filtered with positive pressure of compressed air, and the filtered water can be lower. How...

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Problems solved by technology

Most of the current disc filters are vacuum disc filters, which rely on vacuuming to achieve dehydration. However, since the ultimate vacuum of vacuuming is an atmospheric pressure (about 0.1Mpa), the moisture filtered by it is generally high, and the moisture content of general products Between 10% and 20%, and now many filtration processes have very low moisture requirements for filtered products, and traditional vacuum disc filters cannot meet the requirements

Currently there is a pressurized disc filter, which can be filtered with positive pressure of compressed air, and the filtered water can be lower. However, the current pressurized disc filter uses the entire filter including the transmission, filter disc, and slurry tank. All components, such as discharge belt and discharge hopper, are sealed in the pressurized chamber, and the method of external sealing and integral sealing is adopted. The pressurized space is large, the floor area is large, the air consumption is large, the energy consumption is high, and the investment in equipment and civil engineering is high. Inconvenient maintenance

Moreover, the current pressurized disc filter is discharged through the belt conveyor built in the pressurized chamber. A collecting hopper is arranged under the discharge hopper of the belt conveyor, and a discharge valve and a discharge hopper are arranged below the collecting hopper. , the nesting link is complicated, and the height occupied by the nesting is large, which increases the investment in equipment and civil engineering, and increases the failure rate

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