US1299254A

US1299254A - Desiccating-machine.

Info

Publication number: US1299254A
Application number: US24499118A
Authority: US
Inventors: John W Stamp
Original assignee: Individual
Current assignee: Individual
Priority date: 1918-07-15
Filing date: 1918-07-15
Publication date: 1919-04-01
Anticipated expiration: 1936-04-01

Description

J. W. STAMP.

DESICCATING MACHINE.

APPLICATION FILED JULY 15. 1918.

Patented Apr. 1 1919.

2 SHEETS-SHEET l.

.J. W. STAMP.

DESiCCATING MACHINE.

APPLlCATION FILED JULY 15. 1918.

1 ,299,254. Patented Apr. 1, 1919.

2 SHEETS-SHEET 2.

JOH1\T W. STAMP, OF MELBOURNE, VICTORIA, AUSTRALIA.

DESICCATING-MACHINE.

Specification of Letters Patent.

Patented Apr. 1, 1919.

Application filed J n15 15, 1918. Serial No. 244,991.

To all whom it may concern:

Be it known that I, JOHN WYNNE STAMP, a subject of the King of Great Britain, residing at 235 Cardigan street, Melbourne, in the State of Victoria, Commonwealth of Australia, engineer, have invented a new and useful Improvement in and Connected with Desiccating-Machines; and I do hereby declare the following to be a full, clear, and exact description of the same.

This invention relates to machines for desiccating materials such as deleterious substances and non-deleterious materials such as salt and other foods by revolving the same in a vacuum cylinder mounted within a fixed container that is heated from a furnace or other like source of heat. v

The object of the invention is to provide a machine at once efiicient and economical to construct and to run and which shall have means for quickly feeding the materials to the said cylinder, usually while revolving, and for readily discharging the dried product. Means are also provided to facilitate the heating of the mass in the cylinder; for withdrawing and condensing the vapors as same are generated therein and for avoiding undue pressures within the same.

A further object of the invention is in COIl-r nection with the feeding and discharging means whereby both actions shall be readily and efliciently accomplished. This is pro vided for by arranging the cylinder ends to project slightly beyond the container walls, and by installing the feed and vapor discharge pipes at one end of the cylinder, thereby leaving the other end free to accommodate the discharge door or doors which may vary in shape according to requirements. I

i In carrying the invention into effect, the vacuum cylinder is provided with deep indentations in the shell and is mounted horizontally, in a fixed dry heated container, but having its ends projecting through the walls of such container. In the ends doors are placed and at one end there is an ample feed pipe which comesaxially into the cylinder. Contained within this pipe are two smaller pipes or conduits one of which is in connection with the vapor withdrawal means and the vacuum pump outside, and the :other with a" pipe within the cylinder and connected up to a safety valve outside the same. Such an arrangement of the feed and vapor withdrawalmeans atone endof the cylinder leaves the other end free to contain the main door or doors for emptying the same or through which whole carcasses of dead animals may be introduced.

In the accompanying drawings Figure l is a side sectional elevation of my desiccator.

Fig. 2 is a transverse sectional elevation on the line 22 of Fig. 1. This view illustrates the furnace grate and system of lines that have been found to work satisfactorily in heating the cylinder.

Fig.3 shows an end elevation of the cylinder from the feed pipe, said pipe being in section, and

Fig. 4 is a perspective view of part of the cylinder shell constituting a modification.

The cylinder 4 is provided with a flange 5 at, each end which flanges form treads that run upon and are supported by the rollers 6. The cylinder is disposed within the container 7 in whichis the furnace 8 and the stack 9.

- The shell of the cylinder may be provided with deep indentations l preferably longitudinally placed, in order to provide internal shelves or ribs, the external surfaces of which shall be in contact with the heat in the container. The internal projections thus formed are intended to increase the heating surface, to extend the same into the material and to induce a stirring action in the cylinder, for the purpose of facilitating the process of drying.

I Each end of the; cylinder 4; projects through the container 7 and is provided with the doors 10 which, being exterior to the container,.are readily accessible for dischargingthe cylinder. If found desirable one large door may be provided in one end of thecylinder through which large bodies, such as the carcasses of animals, may be introduced for the purpose of reducing the same. I

The ends of the cylinder are truncated cone shaped, as shown in the drawings, which form has been found useful in that the material, as it creeps toward the ends as the cylinder revolves, is turned over backwardintothe body of the same.

At one end of the cylinder the chute 11 is provided which may be integral with the feed pipe 13 that comes axially into the cylinder through a suitable gland for the purpose of charging material thereinto as it revolves, a valve being in the feed. .pipe 13 through the exterior pipe 17 on the feed pipe 13 to the condenser and vacuum pump (not shown in the drawings), which latter is relied upon to maintain a high degree of vacuum inthe cylinder and to withdraw for condensation the vapors generated therein.

By disposing the furnace in the manner indicated in the drawings it will be seen that the cylinder can be discharged from either end into carts or other receptacles placed below, though I prefer to use the end opposite to the feed for that purpose. The cylinder is rotated by any convenient means such as by a small auxiliary engine and belt and pulley for actuating the pinion 18 (Fig. 3) that gears with a circular rack 19 on the cylinder end.

The feed pipe 13 will be made ample enough to introduce the materials to be dried and at the same time to accommodate the vapor discharge and blow off conduits. And while I have shown a furnace grate for the purpose of generating the heat to evaporate the moisture in the materials I may utilize other sources of dry heat for the purose.

p In operation, the cylinder is charged With the materials to be dried through the chute 11 and valve in the pipe 13, the handle 12 being rocked momentarily to permit of the materials in the chute being drawn into the cylinder, where a high degree of vacuum is maintained. The valve is open for so short a time while the material is being charged that there need be little or no effect on the vacuum pressure and drying process within the cylinder.

hen the'materials are sufliciently dried the cylinderis stopped and the doors at the end or ends are opened and the contents removed. If the cylinder be restarted after opening the doors the dried product will be discharged in a' selfacting way.

The dry heat from the furnace circulates freely around the body but not the ends of the cylinder and escapes through the chimney stack 9, and as the vapors are given ofl, same are withdrawn by the vacuum pump through the pipes 14: and 17. If these pipes should, from any cause, become inoperative, the steam which arises from the drying material will be discharged through the safety valve 316. 4

This machine has been found useful as a means for drying and deodorizing night soil and slaughter house refuse to render it fit for use as manures; for drying out the 'solid ingredients in soup; for drying salt and for other purposes of a like nature. By using a single vacuum cylinder heated from a furnace or other source of dry heat, the process of drying is facilitated and the product can be discharged quicker and in a drier condition and with less expenditure in fuel than is possible in machines which depend upon steam as the drying agent.

Having now described my invention what I claim as new and desire to secure by Letters Patent is 1. In a desiccator, a horizontally mounted vacuum cylinder for containing the material tobe dried, a fixed heated container wherein the cylinder is revolved, means for feeding the material to the cylinder as it revolves, means for discharging the dried material through an end or ends of same and for withdrawing and condensing the vapors therein generated, as herein described.

2. In a desiccator, a horizontally mounted vacuum cylinder, a fixed heated container wherein the cylinder'is revolved, the ends of the cylinder projecting beyond the container walls, and means for feeding the material to the cylinder as it revolves, for discharging the same when dried through said ends and for withdrawing and condensing the vapors therein generated, as set forth.

3. In a desiccator, a horizontally mounted vacuum cylinder, a fixed heated container wherein the cylinder is revolved, the ends to the cylinder projecting through or beyond the container walls, means 111 one end of the 1 cylinder for feeding the samewhile revolving and for withdrawing the vapors therefrom and a discharge door or doors in the other end of the cylinder, as herein specified.

4. In a desiccator, a horizontally mounted vacuum cylinder the shell of which is provided with deep indentations, a fixed heated container wherein the cylinder is revolved, the ends to the cylinder projecting through or beyond the container walls, means in one end of the cylinder for feeding the same while revolving and for withdrawing the vapors therefrom and a discharge door or doors in the other end of the cylinder, as herein specified.

5. The combination in desiccating apparatus of a vacuum cylinder, a fixed heated container Within which the cylinder revolves, the ends to the cylinder projecting through or beyond the container walls, a door or tus of a vacuum cylinder the shell of which is provided with deep indentations, a fixed heated container within which the cylinder revolves, the ends to the cylinder projecting through or beyond the container walls, a door or doors in said ends, means for feeding the material to the cylinder while revolving and means for withdrawing by way of the material feed pipe the vapors therein generated, as described.

7. The combination in desiccating apparatus of avacuum cylinder, afixed heated container within which the cylinder revolves, the ends to the cylinder projecting through or beyond the container walls, a door or doors fitted into each of said ends, a. chute and a feed pipe axially placed in one end of the cylinder, and means in the feed pipe for Withdrawing the vapors or alternatively high pressure steam from the cylinder, as and for the purposes set forth.

8. The combination in desiccating apparatus of a. vacuum cylinder the shell of Which is provided With deep indentations, a fixed heated container within which the cylinder revolves, the ends to the cylinder projecting through or beyond the container walls a door or doors fitted into each of said ends, a chute and a feed pipe axially placed in one end of the cylinder, and means in the feed pipe for withdrawing the vapors or alternatively high pressure steam from the cylinder, as and for the purposes set forth.

9. The combination in desiccating apparatus of a deeply indented vacuum cylinder, a fixed heated container within which the cylinder revolves, the ends to the cylinder projecting through or beyond the container walls, a door or doors fitted into each of said ends, a feed pipe axially placed in one end of the cylinder and means in the feed pipe for withdrawing the vapors or alternatively the high pressure steam from the cylinder, as herein described.

10. The combination in desiccating apparatus of a deeply indented vacuum cylinder, a fixed heated container within which the cylinder revolves, the ends to the cylinder projecting through or beyond the container walls, a door or doors fitted into each of said ends, a feed pipe axially placed in one end of the cylinder, a vapor discharge pipe Within the cylinder and a steam exhaust pipe also therein With their respective conduits in the feed pipe and means on the latter for conducting the vapors to a condenser or alternatively high pressure steam to a safety valve, as herein specified.

In testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN W: STAMP.

Witnesses:

P. M. NEWTON, K. SHEEHY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Yatents,

Washington, D. 0.