Travelling doctor blade

Details Travelling doctor blade Travelling doctor blade

1991-07-01

1992-09-01

Morris, Theodore

Cleaning and liquid contact with solids

Processes

Miscellaneous

210334, 210376, 210784, 210396, 210402, 210791, 1525653, B01D 2444, B01D 2446, B01D 2962, B01D 3306

Patent

active

051435551

ABSTRACT:
A method and apparatus for doctoring (cutting) the solids off a precoat filter. A stationary doctor blade continuously doctors mud (from a mud bath) from the surface of a rotating porous surface vacuum drum. A traveling doctor blade, located upstream of the stationary doctor blade, moves back and forth along the drum. The stationary blade extends the width of the rotating vacuum drum while the traveling blade is shorter and is also located nearer to the drum surface.

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patent: 4273655 (1981-06-01), Reid
patent: 4836917 (1989-06-01), Tomita et al.

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