Patent GB-190407940-A (GB)
Title: Improvements in and relating to Crematories, or Arrangements for Drying and Burning Garbage, Sewage, and like Refuse and for Utilising the Heat Generated therefrom.
Inventor: HAYCOCK FRANK ELLIOT
Filed: 1904-04-06
Granted: 1904-10-06
Abstract: 7940. Haycock, F. E., and McDermott, J. April 18, A.D. 1903, [date applied for under Patents Act, A.D. 1901]. Refuse, treating; sewage and foul waters &c treating.-Garbage, sewage, and like refuse is separated into its solid and liquid parts, dried and burnt, together with the noxious gases evolved and the resultant heat utilized for generating steam. Fig. 1 shows in elevation the complete plant, Fig. 2 the major portion of the same in section, while the remaining Figures show details. In the first place, the garbage &c. is dumped from the carts, which are wheeled upon the platform 15, into the hopper 2. At the base of the hopper is situated a disintegrating-wheel which carries on its periphery a series of curved teeth alternating with similarly-shaped teeth upon the inner face of the casing 4. By suitable mechanism, an oscillatory movement is given to the wheel. In order that the opening on the platform may be closed while the disintegrator is at work, bolts which secure the hinged doors in their closed position must be thrust forward with the doors closed before the friction-drive of the disintegrator is brought into operation. Fig. 11 shows the device employed. The edge of each flapdoor 16 is formed with the pin 20 which enters a corresponding hole in the framework of the platform against the pressure of a spring 22. When the door is closed, an aperture in each pin is presented to the bolt 21, which is secured to the sliding rod 17. The movement of the rod and consequently the engagement of the drum with the driving-arrangement of the disintegrator is prevented until the doors are closed. Within the funnel 8 below the hopper is arranged the perforated horizontal floor 25 which carries the rotating S-shaped sweeps 27. The sweeps are formed with teeth and with cutting- edges. The liquid expressed and fine material fall through the inclined perforated plate 32 and the screen 40. The liquid descends to the chamber 48, which is provided with a layer 49 of suitable filtering-material. Solid matter from the plate 32 and screen 40 falls between rollers 34, 35, the surfaces of which are cleaned by the wire brush 74. Thence, the crushed material enters the drying-chamber 38 and falls upon the grid 79 which reciprocates upon the grating 76. The grid is formed of transverse bars triangular in crosssection. The material falling through the grating is received upon the floor of the superheating- chamber 78. This floor is made up of a series of hollow water vessels 86, Fig. 22, which are supported on end-gudgeons 87 in suitable bearings, and which are connected with lateral pipes 91, 92 and by other pipes with the condenser system of the structure. By this means, the vessels are filled with circulating water. Pinions 93 on the gudgeons engage with racks 94 which are connected by rods to a multiple crank shaft, having thereon the pinion 99. In order that the grate-bars 79 may be reciprocated for a short period while the water vessels 86 are at rest and the motion of the bars arrested while the vessels are moved, the sprocketwheel mechanism 101 is employed. The wheel is constructed with multilated gear 102, Fig. 18, and the bearings of the crank shafts 84, 98 are arranged in such a way that, by means of the hand-wheel 108, they may be brought into engagement with the spocket-wheel. The sprocket-wheel is connected by a chain with the pulley arrangements for driving the crushing-rollers and cleaning-brush. When the water vessels 86 are at rest, they present a flat surface. When oscillated, spaces appear between them through which the dried material falls upon the fire-gate 118, which is fed with fuel through the door 118'. Flues 119 connect the upper part of the drying-chamber 38 with the ashpit. Pipes from the condenser 56, 56<1> also open to the space below the grate so that noxious gases and vapours from the gases may be consumed. From the chamber 117, a flue 120 passes to the ashpit of a boiler furnace 62, where the heat is utilized for the generation of steam in the boiler 59. The steam generated may be employed for driving a pump 124, which raises sewage from a sewer basin to the chamber 8 below the hopper, to be there treated. A pipe connects the hopper with the incinerating - chamber. The floor 50 below the filtering-material is fitted with a series of discharge nipples 51<1> and pipes 52 which traverse the burning-chamber 117 and open to the pipe 54 arranged outside the wall of the crematory for the reception of vapour from the pipes 52. Valves 53 permit of the cutting out of circuit of a pipe which is burnt out. Steam is conducted to the condenser by suitable pipes. The condenser 56 communicates with the condenser 56<1> from which feed is conducted to the boiler 59.