Energy-saving diaphragm type pressure filter

Abstract

The invention discloses an energy-saving diaphragm type pressure filter, comprising a thrust plate, a compressing plate, filter plates and a top press oil cylinder, wherein the thrust plate and the compressing plate are arranged oppositely; the compressing plate is connected to a piston rod of the top press oil cylinder; the filter plates are successively arranged and pressed tightly between the thrust plate and the compressing plate; a filter cloth is clamped between each adjacent filter plates so as to form a filter chamber; an elastic membrane is arranged between each filter plate and corresponding filter cloth; the thrust plate is provided with a material-feeding port communicated with each filter chamber; the material-feeding port is communicated with a slurry pump pipe with a control valve; the thrust plate is also provided with dewatering ports passing through the filter plates and the elastic membranes; the dewatering ports are communicated with a high pressure medium pump pipe with the control valve; and the high pressure medium pump pipe with the control valve and a blow-off pipe are connected to the slurry pump pipe. By adopting two additional processing measures of emptying residual liquid and backflushing air, water content in a filter cake is reduced maximally and steam for the next drying process is saved.

Description

(1) Technical field: [0001] The invention relates to filter press equipment for solid-liquid separation, in particular to an energy-saving diaphragm filter press. (2) Background technology: [0002] Diaphragm filter presses have shown remarkable effects in terms of processing capacity per unit area, reduction of filter cake moisture, and adaptability to the properties of processed materials, and have been widely used in various fields where solid-liquid separation exists. For example, the applicant unit feed industry. [0003] The main structure of the diaphragm filter press is divided into two parts: the host machine and the hydraulic pressure. The main engine is mainly composed of thrust plate, compression plate, filter plate, oil cylinder, oil cylinder seat, beam and other parts. When the cylinder piston is under the action of hydraulic oil, it will drive the compression plate to move forward and backward on the beam; the sequence of filter plate Arranged between the co...

AI Technical Summary

Problems solved by technology

[0005] In practical application, it is found that after the diaphragm filter press is pressed and before it starts to discharge, a part of the slurry remains in the feed inlet and between the filter plates, which affects the removal of the water content of the filter cake and causes the machine to press Filtration efficiency cannot be maximized

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