Press filter device with built-in core filter unit

Abstract

The invention discloses a press filter device with a built-in core filter unit. The device includes a pressing and filtering component including a filter unit inside and a pressure applying component;the filter unit is placed in a pressed material to become the core of the pressed material. The pressed material is placed in a relatively sealed chamber, the squeezing pressure (up to 10 MPa) is improved, and the sealed press operation system avoids the loss of the pressed material during the pressing process, the pressing efficiency is improved, the pressing operation environment is improved, the space is made full use of, the occupation area is reduced by 50%, and for municipal sludge which is difficult to dehydrate, the dewatering rate can reach about 50%. For oil extraction and sugar production, the liquid yield can be increased by 0.5%.

Description

[0001] This application is a divisional application with the application date of 2018-06-08, the application number of 201810583639.5, and the name: "A squeeze filter device with a built-in kernel filter unit" technical field [0002] The invention belongs to the technical field of press filtration. Specifically relates to a press filter device with a built-in core filter unit. Background technique [0003] The traditional squeeze filtration is a process in which the liquid inside the squeezed material moves and flows out to the outer surface of the squeezed material under the action of extrusion to realize the squeeze filtration process. At present, there are belt filter press, plate and frame filter press and screw press filter press in the field of sludge drying. The sludge dehydration rate of these equipment is generally below 20%. After adding external solid auxiliary materials to the filter press system, the apparent dehydration rate of the plate and frame filter pre...

AI Technical Summary

Problems solved by technology

At present, most of the press filtrate equipment used in the oil and sugar industries are screw extrusion equipment, which has the phenomenon of low pressing pressure and relatively low liquid output rate.

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