US1846577A - Mixing apparatus - Google Patents

Description

Fb. 23, 1932. T. w. BARBER 1,846,577

MIXING APARATUS Filed Sept. 1.3, 1928 jv Merz/Laym- TOMQLS I/MZZLlerLBiQ-Zer* @MMU Patented Feb. 23, 1932 UNITED lSTATES THOMAS WALTER BARBER, OF LONDON, ENGLAND MIXING APPARATUS Application filed September 13, 192B, Serial No. 305,854, and in Great Britain September 30, 1927.

This invention relates to improvements in apparatus for the mixing of liquids, of gases, or of gases and liquids, and has for its object to obtain an equally intimate admixture under varying conditions of flow.

W hen a gas or liquid (a),-as, for example, an acid-has to be added to another liquid or gas (b),-as, for example, an oil,- in controlled proportions and in such a manner that an intimate admiXt-ure shall take place, it is desirable that the liquid (a),- usually added as a relatively small percentage of liquid (6),-be introduced into in the form of a jet, spray or series of jets or sprays; and that the orifices be of variable capa-city--while retaining unvaried the finely divided character of the jets or sprays-so as to accommodate themselves to variations in flow or pressure or in both.

The apparatus should also be so constructed that it will continue to function correctly, even if the passage of the liquids or gases tend to set up conditions which might cause progressive choking of the orifices. It

should also be capable of being easily cleaned.

According to this invention, a vertical sectional view of an apparatus to comply with these conditions is shown in the accompanying drawing, and may be constructed as fol- An external chamber A, preferably cylindrical, is provided to receive at its upper end the liquid or gas and a distributing or injecting device B is disposed within this chamber in such a manner that the gas or liquid (a), as it issues therefrom, is injected into the liquid (b) as it passes through said chamber.

This distributing device may be constructed as follows A cylindrical body B,

disposed within chamber A, is bored out to accommodate a pistonl or plunger D. The bore E is provided with orifices C so disposed that the plunger D, in its travel, will progressively open or close a larger or smaller area of these orifices. These orifices C communicate with the chamber A and insure that the liquid or gas (a) always issues in the form of a jet or spray. j

The plunger D is controlled by a spring F weight, or other equivalent device F, so that, when no liquid (a) is flowing, all the orifices C are closed.

The liquid (a) during its flow, is directed into the bore E and acts against one end of the plunger D, which it pushes along the bore until a sufficient area of the orifices C is uncovered to pass the quantity of liquid (a) which is flowing.

If the rate of flow of such liquid (a) is G3 increased, the plunger D is pushed further along the bore E and uncovers a larger area of the orifices. If the rate of feed is decreased, the plunger recedes and the area of the orifices is proportionately diminished. G5

If the orifices become choked (as is often the case with viscous liquids, or where chemical interactions are concerned), the plunger automatically takes account of this and is moved by the incoming liquid (a) until the necessary area for discharge is provided.

To facilitate cleaning of the bore E, the plunger may be made in two parts D and D1 so disposed that, on withdrawal of part D, the part Dl remains in the bore and covers the orices C.

It is, of course, obvious that this apparatus may be used in a series and that the liquids to be passed through it may contain matter in solution or suspension.

This invention is not limited to the construction above described, which is given merely as an example of the manner in which it may be applied.

Having now fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is:

l. An apparatus for mixing fluids, comprising two concentric cylindrical members dening two chambers, one of said chambers being open to and fed by one of said fluids, and the other being open to and fed by the other fluid, a cylindrical plunger in the inner of said chambers, said plunger having one face in contact with one only of said fluids, and the opposite face in contact only with the other of said fluids, and injecting orifices in the wall of the inner cylindrical member.

2. An apparatus according to claim l, comico prisng a cylindrical body in the inner cylindrical chamber having the same diameter as the plunger and a length suiicient to close all of the orilices When the plunger is Withdrawn from the inner chamber, said body being attachable to said plunger, and means to limit the displacement of said body.

In testimony whereof I affixmy signature.

THOMAS WALTER BARBER.

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