SU955848A3 - Filter press for continuous dehydration - Google Patents

Abstract

1286948 Rotary disc dehydration press R YORITOMI 18 Nov 1970 [6 Dec 1969] 54851/70 Heading B1D In a dehydration press wherein material passes round the gap between the inner, frustoconical surfaces of two rotating perforate discs 8, 9 mounted on respective shafts 5, 6, the inner ends of the shafts are connected by a pin 7 vertically oriented in a central aperture 4 in plate 2, which is connected to the outer, annular, fixed casing 1 (Fig. 3, not shown), the outer ends of shafts 5, 6 are restrained against vertical movement by engaging in guide slots 23, 24 and extended by L-shaped levers 30, 31 whose ends are adjustable relative to lug 39 on casing 1 to vary the angular inclination of shafts 5, 6 and hence the ratio of maximum to minimum width of the pressing gap. This construction reduces the forces during pressing to outward forces exerted by levers 30, 31 on adjusting nuts 41, 42 and a shearing force on pin 7, but not net force is transmited from the pin 7 to plate 2 and casing 1, and these parts need not be unduly strong. Slots 23, 24 are formed in extensions of the frame which supports casing 1. Figs. 5 to 7 (not shown) illustrate modifications in which the ends of levers 30, 31 are resiliently engaged by springs or hydraulic rams to allow movement thereof to compensate for material feed rate variations during pressing. Discs 8, 9 are rotated by chain drives to sprockets 18, 19, and supported on shafts 5, 6 by journal bearings 12, 13 and thrust bearings 14, 15.

Description

The invention relates to filtering and can be used in various industries for separating and dewatering suspensions. A press filter for continuous dewatering is known, including perforated filter discs located opposite one another in an outer annular casing and mounted on shafts whose inner ends they are connected by a pin located in the center of the outer ring-shaped casing mounted on a supporting cantilever plate, which is fitted with guides G1 in which they are installed movingly external ends of the shafts, and TlJ-levers A disadvantage of the known press filter is the high liquid content in the filtered sludge. The purpose of the invention is to reduce the force attached to the support cantilever plate and increase the degree of dehydration. The aim is achieved by the fact that in the press filter for continuous dewatering, including perforated filter discs, placed opposite one another in the outer annular casing and reinforced on the shafts, the inner ends of which are connected by a pin located in the center of the outer ring-shaped casing mounted on a supporting cantilever slab, made with direction Л51Ю11 (in which they movably external ends of the shafts, and levers, the latter with one end rigidly fixed to the outer end of the shafts, and the other connected to the casing regulating element .In Fig. 1 shows a press filter, a general view; Fig. 2 - section A-A in Fig. 1. Press filter includes support plate 1, annular casing 2, filtering perforated discs 3, shaft 4 and shaft 5, cantilever plate 6, pin 7, levers 8, regulating element 9, inlet fitting 10 and outlet fitting 11. Press filter works as follows. The raw material enters the inlet and in the adjusted position the filter discs 3 begin to rotate, the raw materials are transferred by rotating the filter discs and are simultaneously squeezed by them, the filtered water flows through the holes of the discs, then the dried material is discharged through the outlet with a scraper.

Claims (1)

1. Japanese patent 19805/68, cl. 35A7, 27.08.68. .ten one Aa