Apparatus and method for sensing the quality of dewatered sludge

Details Apparatus and method for sensing the quality of dewatered sludge Apparatus and method for sensing the quality of dewatered sludge

1979-05-14

1980-09-30

Castel, Benoit

Measuring and testing

Specific gravity or density of liquid or solid

210961, G01G 936

Patent

active

042248213

ABSTRACT:
A cake sensor which includes a rotatable, hollow cylindrical shell adapted to be positioned within a flow of falling cake material and a piston within the shell. The shell has an opening therein through which the cake material will enter the shell, and to one end of the shell are connected a fluid source and a density sensor. The piston extends through the other end of the cylinder and is driven by a torque motor to compress cake material which falls into the cylinder through the opening. The various measurements developed by the density sensor, the torque developed by the torque motor, and the distance traveled by the piston are utilized to determine the characteristics of the cake material. A method for determining the quality of the cake material is also presented.

REFERENCES:
patent: 2490452 (1949-12-01), Mason
patent: 3028749 (1962-04-01), Welkowitz
patent: 3220261 (1965-11-01), Kriebel
patent: 3368387 (1968-02-01), Sion
patent: 3796658 (1974-03-01), Meissner, Sr.
patent: 4040960 (1977-08-01), Taylor et al.
patent: 4159248 (1979-06-01), Taylor et al.

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