US1116308A - Acid-proof air-nozzle and valve. - Google Patents

Description

B. MACDONALD. ACID PROOF AIR NOZZLE AND VALVE.

APPLICATION FILED MAR. 25, 1914.

1,116,308. Patented Nov. 3, 1914.

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//Vl/E/VTOR 2 "Q5" BY ATTORNEYS BERNARD MACDONALD, OF SOUTH PASADENA, CALIFORNIA.

ACID-PROOF AIR-NOZZLE AND VALVE.

Specification of Letters Patent.

Patented Nov. 3, 1914:.

Application filed March 25, 1914. Serial No. 827,047.

To all 'whom it may concern:

Be it known that I, BERNARD MACDONALD, a citizen of the United States, residing at South Pasadena, county of Los Angeles, State of California, have invented certain new and useful Improvements in Acid- Proof Air--l ozzles and Valves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to apparatus for handling acid solutions and particularly to apparatus for use in the treatment of ore pulp, slimes and the like.

In apparatus for treating ore slimes it is frequently desirable to prevent to as large an extent as possible the settling of solids and thickened portions in the slimes, since if such portions of the slimes were to collect upon the bottom of the receptacle, dissolving would take place much more slowly. In order to guard against collecting of the thicker portions of ore slinles it has been common heretofore to provide the recep tacle for such slimes with transfer pipes through which the material is raised continuously from the bottom portion of the receptacle to the upper portion thereof.

The present invention is directed to the provision of apparatus for handling acid solutions under conditions which make the use of acid-proof material desirable. The apparatus comprises a transfer pipe or tube through which the material is forced and a nozzle for compressed air positioned for forcing the acid solution through the transfer pipe, these parts being made of wood so as to be proof against attack by the acid.

The invention involves the provision of a novel form of compressed air nozzle which is of marked simplicity in construction, which is reliable and efficient in operation, the parts of which may be readily manufactured and assembled at low cost and which permits of the use of acid-proof material throughout.

The invention also involves an improved method of mounting the nozzle upon its support in cooperative relation to the transfer pipe and improved means for making connection from the compressed air pipe to the nozzle.

These and other features of the invention will be better understood by reference to the following description taken in connection with the accompanying drawings which show the preferred embodiment of the inventlon.

In these drawings, Figure 1 is a central section of a tank for treating ore 'slime's. Fig. 2 is an enlarged view in section through the nozzle and the lower end of the tank and transfer pipe. Fig. 3 is a detail view in horizontal section on line 33 of Fig. 2 showing the connection of the air supply pipe to the nozzle.

Referring to these drawings, A indicates a tank of substantial size preferably constructed of wooden staves and 'rnounted on a suitable base B. \Vithin the tank A are a plurality of transfer pipes C each arranged in a vertical position. Each of these pipes is supported upon the bottom D of the tank in any suitable mannerwi'th its lower end a short distance above the bottom D. In the drawings each pipe is shown as mounted upon four uprights d rising from the bottom of the tank and having their upper ends secured to the lower end of the pipe 0. The solution in the tank is forced upwardly through the pipes C and out through outlets 0 near the upper end of the pipes C. These outlets are disposed parallel to the adjacent side wall of the tank so that the discharge therefrom causes the material in the tank to take up a circular motion, as indicated by the dotted line in Fig. 1. This circular motion of the material aids in retarding the settling of the thicker portions of the solutions.

The material is caused to flow. upwardly in the pipes C by compressed air admitted to the lower ends of the pipes. 'For this purpose nozzle E is provided. This nozzle, like the pipes C, is made of wood so as to be proof against attack by acid in the solution. The nozzle is circular in cross-section and a portion of it is tapered as shown at e. A tapered opening is provided in the bottom D of the tank for the reception of the nozzle E, and the nozzle is mounted in position by passing it upwardly through the opening in the bottom of the tank untilthe tapered portion e engages and wedges against the wall of the tapered opening in the bottom of the tank. In this way the nozzle may be quickly mounted in position in such a manner as to preclude leakage around the nozzle, and also lic material. Preferably the ball. is glass or earthenware, and its surface is made so smooth that the valve will seat itself accurately upon the wall at the junction of the passage-Way c and the enlargement a The wall of the nozzle above the seat for the valve is provided with a plurality of transverse openings 6 The upper end of the enlarged portion 6 of the passage-way through the nozzle is threaded to receive a plug 6, which constitutes .a retainer for holding the ball valve F in its position within the nozzle. This retainer, however, permits such upward movement of the ball F as will allow theair to pass freelyfrom the passage-way 6 through sage-ways e I WVhen the nozzle is mounted in position as above described, its upper end is close to and preferably slightly withinthe lower end of the transfer pipe C. An air supply pipe G is connected to the lower end of the nozzle E below the bottom of the tank. of this pipe Gr is secured to a metallic plate 9 curved toecorrespond with the curvature the transverse pas- I of the nozzle E and having an opening alining with the opening in the pipe G. A bail gv is adapted to encircle the nozzle, its ends passing through the ends of the plane 9 and having nuts on the ends thereof by which the bail and the plate 9 may be caused to grip the nozzle E firmly. The nozzle has a transverse opening therein leading to the passage-way c with which the opening in .the plate 9 alines when the parts are assembled in the manner shown in Figs. 2 and 3. The opening e extends all the way to the bottom of the nozzle and a plug g is provided for closing the lower end of the passageway. This plug may be readily withdrawn to permit of clearing the passage-way e of particles which may become lodged therein.

In operation, the compressed .air passes from the pipe G into and through the nozzle- E, raising the valve 15 and issuing through the transverse openings e. The air The end wooden nozzle mounted in an upright position with its upper end within'and close to the lower'end of the pipe, said nozzle having a central passage therethrough which is enlarged in diameter near its upper end to provide a valve seat at the lower end of the enlarged portion of the passage and said enlarged portion extending from the said seat'to the upper end of the nozzle, transverse openings in' the wall of the nozzle above the "alve seat, a ball valve of nonmetallic material located in said enlargement and coacting .with the valve seat, and a retainer threaded into the upper end of the passage through the nozzle.

2. The combination of a support having a taperedopening therein, a wooden pipe mounted in an upright position over said opening and having its lower end open, a wooden nozzle extending through the opening in said support and having the exterior thereof tapered to Wedge in said tapered opening, said nozzle being in alinement with the pipe and having its upper end adjacent to the lower end of the pipe, and a valve in the nozzle controlling the passageway therethrough. '1

3. The combination of a support having an opening therein, a wooden pipe mounted in an upright position over said opening and having its lower end open, a nozzle mounted in the opening in said support with its upper end adjacent to the lower end of the pipe, a compressed air pipe below said support, a plate secured to the end of the pipe and lying against the lower end of the nozzle, and a bail encircling the pipe and having its ends secured to the ends of the plate, said nozzle having a passageway therethrough the lowerend of which extends transversely and coacts with an opening through said plate leading to the interior of the compressed air pipe.

lln testimony whereof I afiix my signature, in presence of two witnesses.

BERNARD MALGDONALD.

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