GB387694A - Improvements in or relating to manure - Google Patents

Abstract

387,694. Drying poultry manure ; poultry-houses. YOUNG, R. A. G., Castlegate Mills, Malton, Yorkshire. Aug. 4, 1931, No. 22072 and 22134. [Classes 5 (ii) and 111.] Manure is made by drying poultry droppings by exposure to a current of heated air or other gas, preferably at a temperature of from 60-300‹ C., and subsequently directly grinding the dried droppings. The droppings may be collected on boards or trays, which may be sprinkled with a powdered drying material such as gypsum to prevent aggregation of the droppings, and transferred to the drying-apparatus. The process may be carried out in the apparatus shown in Fig. 4, wherein a hopper 13 feeds the droppings on to an endless band conveyer 14, conveniently of gauze, which conveys them in counter current to a current of hot air from a fan 16 and furnace 17 ; the dried material is then carried by an enclosed conveyer 18 to a grinder 19, from which the ground material falls into a container 20. Two sieve-like members may be mounted slightly resiliently between the hopper 13 and the conveyer in order that the droppings may be somewhat crumbled. The endless band conveyer may be replaced by a worm conveyer or by a rotary drum. The droppings may also be dried on wire mesh shelves 1, Fig. 1, in a drying cabinet 2 having a stove 5 underneath it to supply hot air. Alternatively, the droppings may be collected in the poultry house on trays T having legs 9 in the form of a hollow frustum of a cone and having a runner, e.g. in the form of a wheel or ball 9<1> at the bottom which may run on rails beneath the roosts. A number of trays may be coupled together. The trays are removed and a number stacked as shown in Fig. 2, the upper ends of the sockets of the legs 9 receiving the lower ends of the legs of another tray. The two ends 71, 7<11> of the trays are hinged so that they may be swung down; with this arrangement the opposite ends of adjacent trays may be swung down so that when the battery of trays is slid into the drying cabinet the cabinet is divided into two by baffles 11, the ends 7, 7<11> and the bottoms 8 of the trays. These tray bottoms may be of gauze. The cabinet is provided with hot-air inlets in the form of perforated pipes 10 and similar air outlets 10<1>. Specifications 18918/89,235,802, and 301,105, [all in Class 111, Sewage &c.], are referred to.