US677870A - Rotary cooling apparatus. - Google Patents

Description

No. 677,870. Patenked July 9, I90l. J. W. KITTRELL.

ROTARY COOLING APPARATUS.

(Application filed Aug. 6, 1900.; (No Model.) 2 Shaeis-Sheet 2.

l Wines:

1n: mums Pincus cufwmaumo. WASHINGYON, o c

UNITED STATES PATENT OFFICE.

JAMES IV. KITTRELL, OF SMITHS LANDING, NEW YORK.

ROTARY COOLING APPARATUS.

SPECIFICATION forming part of Letters Patent N 0. 677,870, dated July 9, 1901,

Application filed August 6, 1900. Serial-No. 26,054. (No model.)

To all whom it may concern:

Be it known that I, JAMES W. KITTRELL, a citizen of the United States,'residi n g at Smiths Landing, in the county of Greene and State of New York, have invented certain new and useful Improvements in Rotary Cooling Apparatus, of which the following is a specification.

My invention has for its object to rapidly cool the granular matter discharged from certain classes of furnaces or heaters--as, for instance, furnaces for heating cement or for heating phosphate rock, 860.; and my invention consists in the combinatiomwith thefurnace or heater, of a rotary shell provided near its wall with pipes for receiving a cooling liquid, which rapidly cools the material discharged to and conducted through the shell,

\ and which liquid is heated thereby for subsequent use for feed-water for boilers, &c.', and in the particular construction of the cooling-shell, as fully set forth hereinafter and as illustrated in the accompanying drawings, in which- Figure 1 is a side view, partly in elevation and partly in section, of my improved cooling-shell shown as arranged in respect to a furnace. Fig. 2 is a transverse section of the shell, and Fig. 3 is a sectional view illustrating a modification.

The furnace A may be any suitable furnace or heater-as, for instance, a furnace for drying phosphates or one in which cement is heated. In any case it is a furnace from which hot material must be discharged in a more or less granular condition, and therefore has a discharge-opening ag'and from the latter may extend a chute B.

The material which is discharged from the furnace is cooled and conducted from the furnace, and the heat of the cooled material is utilized by means of a rotary shell 0, preferably supported upon rolls D D in a slightlyinclined position, so that the material discharged from the chute B at the inlet end will pass gradually by gravity, as the shell rotates, toward the outlet end. The shell is rotated by power in any suitable manner.

Within the shell,adjacent to'the wall there-v of, are channels for the circulation or discharge of liquid or fluidas, for instance,

' water-and, as shown in Figs. 1 and 2, the said channels consist of pipes 0, arranged parallel to each other adjacent to the inner wall, and these pipes are so connected at their ends as to constitute practically one continuous pipe, the Water flowing thereto through a radial pipe 0 at the inlet end and connected with the first of the series of pipes c and being discharged through a radial pipe 0, connected with the last of the series of pipes c at the outlet end of the shell. The inlet pipe 0 communicates with a hollow casing F, having a stuffing-box, into which extends the branch n of the supply-pipe It, so that the casing F can rotate with the shell about the branch n, the packing preventing any leakage, and to properly brace the parts an inclined bracep extends from .the casing F to one of the pipes 0. At the discharge end of the shell there is a similar casing F, communicating -with the pipe 0 and with a branch of the stationary discharge-pipe 7c. As thus constructed the material discharged fromthe furnace passes into the inlet end of the shell and the latter is rotated, thereby bringing the material into contact with all of the conducting-pipes, so that the Water passing therethrough tends to gradually abstract the heat from the material,while the water itself is heated and in its heated state maybe used as feed-water for boilers or for other purposes.

In order to properly support the pipes c, the interior of the shell is provided with bearing-rings g, which may be held in place in any suitable manner. If desirable, these ringsmight be provided with grooves or sockets to receive the pipes 0.

Where the material to be cooled is abrasive in its character-as, for instance, the rock used in preparing cementit is apt to wear away the pipes c with great rapidity if it moves abrasively in contact with the same. I have found that this rapid wear may be prevented by means of protective or guard strips arranged longitudinally of the shell, but so placed that the material will not be brought percussively against pipes c or roll over the same in the rotation of the shell. These strips ff, as shown, are arranged each between two pipes c c and extend somewhat over the latter, as shown in Fig. 2, and as thus arranged may also be the means of clamping the pipes in place by means of bolts 3, passing through the strips and through the shell, as shown. The strips may, however, be secured in any other suitable manner.

While I have shown in Figs. 1 and 2 an arrangement whereby the Water flows successively through all of the pipes a before being discharged, this is not necessary, as the water may be conducted from the pipe to a hollow ring a at the entrance end of the shell, the said ring communicating with all of the pipes c, as in Fig. 3, and the latter at the discharge end communicating with another ring 1;, from which the pipe 0 leads. In such case the water will flow in parallel courses through all of the pipes c in the same direction, and a more rapid cooling effect will be secured.

While I have shown one construction of rotary shell provided with channels for a cooling liquid combined with the discharge-opening of a furnace or heater, I do not limit myself to such construction, as a rotary shell provided with channels for a cooling liquid may be differently constructed to secure the desired result.

\Vithout limiting myself to the precise construction and arrangement of parts shown, I claim- 1. In a rotary cooling apparatus, the combination of arotary shell, means to deliver the material to be cooled thereto, said shell being provided with channels arranged within it adjacent to its walls and movable with the shell when the latter is rotated, protective strips for said channels extending longitudinally of the shell and means for supplying a cooling fluid to and discharging it from said channels, substantially as set forth.

2. The combination with the rotating shell, of a series of pipes constituting conductingchannels arranged within the shell adjacent to the walls thereof and movable with the shell during its rotation, and protective strips arranged longitudinally of said shell, substantially as set forth. 7

3. The combination with the rotating shell, of a series of pipes constituting conductingchannels arranged within the shell adjacent to the walls thereof, protective strips arranged longitudinally of said shell, and bolts connecting said strips to the shell, substantially as set forth.

4. The combination with the rotating shell, of a series of pipes constituting conductingchannels arranged within the shell adjacent to the walls thereof, bearing-rings on the walls to support the pipes, and protective strips arranged longitudinally of said shell, substantially as set forth.

5. The combination with the rotating shell, of a series of pipes constituting.conductingchannels arranged within the shell adjacent to the Walls thereof, bearing-rin gs on the walls to support the pipes, protective strips arranged longitudinally of said shell, and bolts connecting said strips to the shell, substantially as set forth.

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

JAMES W. KIT'IRELL.

Witnesses:

GEORGE A. STURGES, Jr.,-

EDGAR JOHNSTON.

Images