US1525048A

US1525048A - Ash-conveying mechanism

Info

Publication number: US1525048A
Application number: US337082A
Authority: US
Inventors: Ernest W Robey
Original assignee: UNDERFEED STOKER CO Ltd
Current assignee: UNDERFEED STOKER CO Ltd
Priority date: 1919-11-10
Filing date: 1919-11-10
Publication date: 1925-02-03
Anticipated expiration: 1942-02-03

Description

Feb. 1925- 1,525,048

E. w. ROBEY ASH CONVEYING MECHANI SM Filed Nov. 10. 1919 3 Sheets-Sheet 1 Feb. 1925- 1,525,048

E BEY Feb. 3, 1925.

E. W. ROBEY ASH CONVEYING MECHANISM Filed Nov. 10. 1919 3 Sheets-Sheet :5

o 0 o fie n no Patented Feb. 3, 1925.

UNITED STATES 1,525,048 PATENT OFFICE.

ERNEST W. ROBEY, OF LONDON, ENGLAND, ASSIGNOR TO UNDERFEED STOKER COM- PANY LIMITED, OF LONDON, ENGLAND.

ASH-CONVEYING MECHANISM.

Application filed November 1"0 aZZ whom it may concern:

Be it known that I, ERNEST VViLLIAM Room, a subject of the King of Great Britain, residing in London, England, have invented certain new and useful Improvements in Ash-Conveying Mechanism, of which the following is a. specification.

In operating furnaces of the kind n which the ashes are discharged into a con- .veyor operating under water which acts as a seal to prevent access of air to the furnace, there is the difficulty that should the conveyer be put out of work for any reason, provision mustbe made for co-ntlnuing the removal of ashes and itbeco-mes a problem how to do this without admitting air to the furnace.

By the present invention the submerged conveyer is duplicated each conveyor being separately operated and a device is provided with means by which the ashes -can be diverted from the point of discharge so that. they fall into either coir-lever accordingly as the device is set for their travel in one direction or the other. Thus, should one conx'eyer be thrown out of operation, the other can be brought into use by merely setting the said device, and removal of ashes continues without disturbing the water seal.

T hrce constructions are shown in the accompanying drawings as examples of the invention.

F ig. 1 is a cross section through a trough containing water which seals a discharge hopper, the trough containing .two conveyors.

Fig. 2 is a cross section through a trough containing water and two conveyers, the trough being built in a furnace setting and serving a number of travelling grates.

Fig. 3 is a diagrammatic longitudinal sec tion through one of the conveyers on line 3-3 of Fig. 2.

Fig. 4 is a cross section through two parallel troughs, each containing water and a conveyer, and each trough serving a common discharge hopper.

Referring Fig. 1, the bottom of the trough a has tracks for two conveyers b at a suitable distance apart. The co-nveyers here shown are of the endless chain type, travelling up inclines at the ends of the trough and returning beneath the latter. The trough is adapted to hold water of sufficient depth to seal the discharge hopper c, and is of length suitable for serving sev- 10, 1919. Serial No. 337,082.

1 eral such hoppers. Co-incidently with the longitudinal middle line of the trough is mounted a shaft (Z adapted tobe turned on its axis by the lever e and carrying beneath each hoppcr a plate f of length suflicient to extend at an incline, from one edge of the rectangular mouth of the hopper to the opposite conve'yer as indicated in the drawing. Thus the plate guides the ashes and clinker. to the conveyor in use; when it is desired to use the other conveyer the lever e is turned so that plate f may have the position indicated in dotted lines.

' Referring to Fig. 2 the trough a serves a number of travelling grates g. The trough is divided by a longitudinal partition h and each compartn'ient contains an endless chain conveyer b travelling in the trough and submerged for the greater part of its length in the water therein. As in the ease of Fig. 1 a longitudinal shaft (5', mounted to be turned on its axis by a lever B carries a flap i at the place of discharge of each grate 9. When this flap has the position shown in full lines the ashes are discharged into the left hand compartment of the trough where they fall through the upper length of the eonveyer to be carried away by the lower length. When the flap is turned into the position shown in dotted lines the right hand conveyor receives the ashes. Between adjacent grates a vertical plate m extends below the surface of the water in the trough to seal the discharge passage. I The endless chains of the conveyor, one of which chains is seen at b in Fig. 3 travel over front and rear sprocket wheels C and K respectively and are guided by pulleys Z and n. The front sprockets C are suitably driven and the axle of the rear sprockets K is mounted in a lever frame 0 adapted to be adjusted in position by screw spindle p for tcnsioning the chains.

Referring to Fig. 4 the hopper has two discharge chutes, one over each trough a As before the troughs serve a number of hoppers. The endless chain conveyers 5 return below the troughs as in Fig. 1. On the drawing the left hand chute is discharging the hopper, the door 70 controlled by a lever (not shown) being in open position, while the corresponding door Z of the right hand chute is closed.

Having thus described the nature of the said invention and the best means I know of carrying the same into practical efiect, I claim 1. In combination, a furnace setting, a travelling grate therein, means adapted to containwater, battles extending from said setting into the waiter space thereof to seal the grate from access of air, two'parallel chain type conveyors in said Water space, and means adapted to direct ashes from said grate continuously into either conveyor.

2. In combination, a furnace setting, a travelling grate therein, a trough adapted to contain water, means extending from said setting into the water space of said trough to seal the grate from access of air, two parallel conveyors of the endless chain type in said trough beneath the water level thereof, and means adapted to direct ashes from the grate continuously into either conveyor.

3. In combination, a furnace setting, a travelling grate therein, an end wall on said setting, a trough adapted to contain water constructed in said setting, means depending from said end wall into the water space of said trough to seal the grate from access of air, a longitudinal partition dividing said trough into two compartments, an ash conveyor of the endless chain type disposed in each compartment below the water level thereof, a support between the compartments, a plate mounted to turn on an axis in the support parallel to said partition, and means for positioning the plate so as to direct ashes from the grate continuously into either compartment.

In testimony whereof I have signed my name to this specification.

E. W. ROBEY