US1912336A - Furnace ash grinder and remover - Google Patents

Description

May 30, 1933. F. B. ALLEN *FURNACE SH GRINDER AND RMOVER Filed May 19, 1928 2 Sheets-Sheet 1 mvENTo FFAA/KB. All F/V BY A -fs-/J/ NEY May 30, 1933. F. B. ALLEN FRNACE ASH GRINDER AND REMOVER Filed May 19, 1928 2 Sheets-Sheet 2 Patented May 30, 1933 UNITED STATESA PATENT ,01u-"lola:A

FRANK B. ALLEN, OF LOWER MERION TOWNSHIP, PHILADELPHIA COUNTY, PENN- I SYLvANlA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO- THE ALLEN-SHERMAN-HOFF COMPANY, 0F PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYL VAN IA Application filed May 19,

This invention relates to an improved apterial and more particularly incombustible residues from a furnace.

It has been customary v1n removing the 1narated from the fine material between the furnace bottom and the conduit and the larger pieces broken up or else removed. This procedure has necessitated the subsequent handling of the coarse, solid material manually or by clamshell ybuckets and the like, and has not resulted in a sufiiciently finely divided mass of solid material to be disposed of readily and completely through an impeller pump as is often desirable.

My invention aims to provide a power conserving apparatus for reducing ash as ordinarily encounteredin furnace hoppers to the size required for passage through animpeller pump.

It relates also to a portable ash grinder and means for employingthe same with a 'plurality of hopper discharge openings and an ash handling fluid conveyor.

'the une 2 2 of Fig. 1.

Referring particularly to the drawings:

Fig. l is a longitudinal section through one form of device embodying my invention and showing the grinding mill in side elevation.

Fig. 2 is a transverse section ta en upon In its preferred embodiment the device comprises a furnace hopper having the side walls 1 and the end walls 2 and provided with a plurality of transversely extending crickets 3 in its bottom which cooperate with the side and end walls to direct the discharge of incombustible residues through a series of discharge openings. The discharge openings rality of toothed grinding rolls 5'may be suit ably mounted in the hopper for rotation therein, whereby incombustible residues may be ground to a certain size before being dropped to the bottom of the hopper.

A portable` grinding mill is adaptedto be disposed beneath the hopper upon the basement' floor of the boiler house. The grinding` FUR/NACE ASH GRINDER AND IREMOVER 1928. serial No. 279.103.

mill comprises a receptacle 8 suitably mounted upon wheels. The receptacle extends outwardly of the hopperand upwardly beyond the position of rest of solid materials banked between the receptacle and hopper. Aplucombustible residues from furnace bottoms to f drop the same into a. conduit containing wa ter, the coarse material having first been seprality of toothed` grinding wheels 9 are mounted wit-hin the receptacle, and are driven in rotati-on by the motor 10 through the train of connections illustrated. These grinding wheels break up the incombustible residues to a size smaller than that effected by the grinding wheels o and sufliciently small for the residues to be washed through a conduit.

A conduit 14 is ldisposed lin the oor and.

extends beneath the discharge openings 'of the hopper. The surface of the fioor slopes toward the conduit as can be clearly seen in 'F ig. 2. Rails l5 to support the 'rinding mill are sunk in the sloping section o Hoor on 'opposite sides of the conduit. The upper surfaces of the rails 15 are substantially flush AWith the surfaceof the iioor so that residues falling upon the floor can be washed by water' tank permits finely divided residues andv Water to flow therethrough into the tank. The grate 21 is inclined at an angle so that residues too coarse to pass through the grate are directed to a plurality of grinding r'olls 22 mounted for rotation in the tank. These grinding rolls are adapted-to break up the residues to a suiiiciently small size, so that the entire mass of lresidues can be passed through an impellerpiimp 23. The residues are pumped through the pipe 24 toa storage tank 25.

In the operationof the device the incombustible residues'drop through the furnace hopper between the grinding rolls 5 where they are broken into coarse particles and acoumulate upon the gates 4 in the bottom of the furnace hopper. The. portable grinding mill is moved manually or otherwise to a. position in alignment with one of the discharge openings, the corresponding gate 4 is opened and the-residues are dropped into the receptacle 8. The grinding wheels 9 are rotated breaking up the residues to a size sufficiently small that they can be flushed by the water through the conduit 14. 'This operation is repeatedl alternately at the other discharge openings of the ash hopper. As the mixture of water and broken residues passes from the conduit 14 the finely divided residues drop directly into the tank 20 while the coarser particles are propelled on to and further broken up by the rolls 22 to a condition suitable to be passed through an impel- .ler pump after which the entire mass of residues and water is pumped into -the storage tank 25. c f

While a particular embodiment of the invention has been hereindescribed, it will be apparent that' modifications can be made therein without departing from the spirit of the invention, and it is not desired to limit the scope of the invention otherwise than is indicated by the accompanying claims.

What I claim isl. In apparatus for handling solid materials, the combinationof a hopper having-a series of discharge openings, movable gates for the openings, a conduit extending beneath the series of openings, a grinding mill mounted for movement longitudinally of the conduit having an inlet opening adapted to be disposed in alignment with each discharge opening in turn and having an outlet opening adapted to direct the broken materials into the conduit, anda receptacle mounted on said grinding mill and having walls ex" tending upwardly and outwardly from said inlet opening to a point beyond the position of rest of solid materials banked between the receptacle and hopper. y

2. In furnace construction, a floor, a hopper disposed in. spaced relation above the floor, said hopper being provided with a series of discharge openings, movable gates for the openings, a grinding mill mounted for movement between the floor and hopper and including a receptacle adapted to receive the resid;;es discharged through the discharge openings and an outlet opening for the broken residues, said receptacle having Walls extending upwardly and outwardly from said inlet opening to a point beyond the position of rest of solid materials banked between the receptacle and hopper, and a conduit in the fioor extended beneath the series of discharge openings adapted to receive the residues discharged fr'om the outletopening and to conduct them' to a place of disposal.

3. In furnace construction, a floor, a hopper disposed in spaced relation above the floor and provided with a series of discharge openings, 'movable gates for the openings, rails in the iioor substantialy flush with the surface of the floor, a grinding mill including a receptacle adapted to be moved along the rails into successive align-ment with the discharge openings of the hopper to receive the incombustible residues discharged therefrom, means for breaking up the residues in the receptacle, the receptacle being provided with an outlet for discharge of the broken residues, and a conduit in the floor extending beneath the discharge openings between said rails and adapted to receive the residues discharged from the outlet, and to conduct them to a place of disposal.

4. In apparatus for handling solid material, a hopper provided with a discharge opening, a receptacle adapted to receive the solid material discharged from the opening, said receptacle extending outwardly of the hopper and upwardly beyond the position of rest of solid materials banked between the receptacle and hopper, means in the receptacle adapted to break up the solid material, said receptacle being provided with an outlet, a conduit adapted to receive the broken solid material discharged from the outlet and to contain fluid -means for conducting the broken solid material through the conduit.

In testimony whereof I hereunto aiiix my signature this 3rd day of May, '1928.

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