US1089108A - System for ozonizing liquids. - Google Patents

Description

G. F. BUTLER.

SYSTEM OF ozomzme LIQUIDS.

APPLICATION FILED MAY 20, 1913.

1,089, 1 O8, Patented Mar. 3, 1914.

8 wue m-ko-z n a 6M 951 flame M421 4 lit GEORGE 1E. BUTLER, 01E NIAGARA FALLS, YORK, ASSIGNOR TO AMERICAN OZONE COMPANY, A CORPORATION OF NEW YORK.

SYSTEM FOR OZONIZING LIQUIDS.

To all whom it may concern:

Be it known that I, GEORGE F. BUTLER, a citizen of the United States, residing at Niagara Falls, in the county of Niagara and State of New York, have invented certain new and useful Improvements in Systems for Ozonizing Liquids, of which the tollowing is a full, clear, and exact description.

This invention relates to systems for purifying water and other liquids by charging the same with ozone. In some systems of this character, which are wholly or partially automatic in their operation, it is customary toinject the ozone into a flowing column of the water or other liquid to be treated on its way to a storage or distributing tank. The ozone injector is usually applied to the moving column of liquid at some point between a cutoff valve which controls the column of liquid and the tank, and when the supply of liquid and of ozone arecut off for any reason, such as the filling of the tank, there is left in the column between the valve and the ozoneinjector, a quantity of un-ozonized liquid,

which if allowed to stand, eventually finds its way into the tank, and, being untreated, will contaminate the entire contents of the tank.

The object of my invention is to prevent contamination from this cause, and to ac complish this it introduce between the ozone injector and the tank, an automatic valve adapted to deflect from the tank any portion of the untreated liquid which may be left standing in the column when the source of supply is cut ofl The accompanying drawings illustrate somewhat conventionally an ozonizing system of the character referred to.

Figure 1 illustrates the system as a whole; and Fig. 2 a section of the automatic valve supplied by my invention.

Referring to the drawings, 1 indicates the casing of an ozonizer, which, as constructed by me, comprises two members hermetically sealed together at the point 2 and forming a chamber in which the usual electrodes and dielectric of the ozonizer are contained. Immediately beneath this casing and attached to it, is another casing 3 containing the usualelectrical transformer supplying current of the proper value tothe ozonizer, a pilot lamp 4 showing when the current is flowing.

5 is a pipe conveying a column of water or other liquid to be ozonized. This pipe Specification of Letters Patent.

Application filed May 20, 1913.

Patented Mar. 3, 1914.

Serial No. 768,742.

contains a cut-oil valve 6 and leads through a mixing chamber 7, whence, by pipe 8, it enters a receiving tank 9 for the ozonized liquid. The mixing chamber 7 is provided at its lower end, at a point below the pipe 8. with a valve 10, which is normally pressed upward to open, by a com )aratively light spring 11. The contents oi the chamber 7 are permitted to escape to a waste-pipe 12 when this valve is open. A pipe 13 which enters the top of the ozone casing, leads to a point above the mixing chamber 7 and is there fitted with an injector 13 which dis- .charmes ozone into the li uid column A pipe 14 conveys air from a suitable air-drying apparatus 15 to the bottom of the ozonizer casing and thus supplies the air which afterward becomes ozonized and is conveyed to the liquid column by the pipe 13. 16 is a pipe provided with a check-valve 17 and a cut-ofl 18 conveying water for cooling purposes to the lower half of the ozonizer chamber, whence the water leads by pipe 19 to the upper half of said chamber from which it then escapes by pipe 20 to the waste-pipe 12. The valve 6 controlling the liquid column is automatically operated by a solenoid 21, the solenoid being energized to open the valve, and its core being permitted to fall by its own weight, to close the valve when the solenoid is denergized.

22 is an electric switch of the quick-action variety which controls the circuit of the solenoid 21 and also of the transformer and ozonizer, the switch as shown being in the closed-circuit position where the contents 23 are bridged. The circuits in detail are not herein shown since they form no part of the invention. The switch 22 is operated by means of a float 24 in the tank 9. A vertical rod 25 leads upward from this float and connects with the switch lever, as shown, so that when the float rises to a predetermined level, the switch is thrown to open the circuit and thus closes valve 6 and stops the generation of ozone.

In its ordina operation, with the circuit closed and the liquid-flowing freely through pipe 5 to tank '9 or other depository, the liquid becomes charged with the ozone at the point between the valve 6 and the tankwhere the pipe 13 taps the liquid column, and consequently all of the liquid that enters the tank is treated. The liquid in pipe 5 being necessarily under a certain head or pressure, holds the valve 10 at the bottom of the mixing-chamber 7 closed, so that there is no escape or waste of thetreated liquid. When the tank is filled to a predetermined point, the float 24 has been lifted to such an extent that switch 22 is opened, the generation of ozone ceases, and the valve 6 is closed. The closure of the valve 6 leaves a column of liquid standing in pipes 5 and 8 between the valve and the tank, and all of that portion of the liquid between the valve and the ozone injector is untreated with ozone. If this portion of the liquid were allowed to remain in the pipe, it would eventually find its way by circulation or flow, into the chamber 7 and through the pipe 8 into the tank where it would contaminate the treated liquid therein. This result, however, is prevented by the fact that as soon as the valve 6 is closed, the pressure or head on the liquid column between the valve and the tank is removed, which permits valve 10 to open under the action of spring 11, and allows the liquid in chamber. 7 and pipe 5 to be defiected= from the tank 9 into the waste-pipe 12,

noeeuoe been drawn oil so that the level falls below the upper limit, the float closes the electric switch, thereby simultaneously starting the ozonzier and theawater column, the pressure of the latter again closing the valve 10 and permitting the system to operate in its normal way. Pipe 26 merely carries a faucet for testing purposes.

Having thus described my invention, I claim In a system for ozonizing liquids, the combination of a supply column of the liquid to be ozonized, a depository for the ozonized liquid, a cut- 03 valve in said column, means for injecting ozone into the column at a point between the cut-0E valve and the depository, and a valve located in said column between the depository and the point of ozone injection, said valve being adapted to deflect the liquid from the depository and being itself controlled by the pressure in thecolumn.

In witness whereof, I subscribe my signature, in the presence of two witnesses.

GEQRGE F. BUTLER.

Witnesses:

FRANCIS l. Krcnrn, Jae. A. Gnu-urn.

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