US2120515A - Clarifier - Google Patents

Description

June 14, 1938. J J STQECKLY 2,120,515

CLARIFIHR Filed April 3, 1936 Jawcwkyo Patented June 14Q1938 I I I I UNITED STATES PATENT OFFICE poration, New York, N. Y., a corporation oi Delaware Application April 3, 1936, Serial No. 72,470 In Germany April 11, 1935 3 Claims. (01. 210-52) This invention relates to improvements I in p e ab y connected w t a p p by means of a clarifiers such as are used in the industry for the valve is arranged in the lower end of the standpurification of lyes, oils and the like, i. e., liquids p p which deposit solids or slimy substances, and During the starting and stopping of the pump which are usually provided with a conical mud theliquid impulses aus d there y may p ssibly repository in which the sediment may settle and extend into the standpipe but such impulses have from where the said sediment may be drawn off prac ally disapp ared n th connecting p p by any suitable means, into the clarifier, so that the result of this ar- The discharge pipe for the purified liquid is rangement is to leave the purified liquid in the preferably arranged above the mud repository. clarifier practically undisturbed.

In most cases the outlet pipe leads directly The arrangement of the new device is illusto the discharge pump which pumps the purified trated in the accompanying drawing, in which liquid to the points of consumption or storage. I indicates a clarifier which is provided at its During the starting and stopping of these pumps, upper end with a supply pipe 2, a discharge pipe impulses in the connecting pipe in the direction 3, a cover 4 and a small access opening. 5 protoward the-clarifier, and consequently whirling vided therein. Besides,a special aerating and de-. motions in the clarifier are almost inevitable. aerating device may be provided.

Every whirl in the liquid within the clarifier dis- The lower end 6 of the tank is conically formed turbs the normal purifying process and causes and represents the so-called mud sack or mud re- 0 a, portion of the sediment to be drawn on t pository in which the sediments settle; these gether with the purified liquid. sediments are from time to time removed by In order to overcome the above mentioned dismeans of the valve 1 arranged at the bottom. advantage, it has been suggested to arrange be- A connecting pipe 8 is positioned above t e low the clarifier a second tank for the purified mud sack and is connected tothe standpipe 9. liquid and to discharge the purified liquid into It is preferred to provide the connecting pipe 8 this tank from time to time, from where it is with a valve [0. then drawn oif by the pump. This solution of The standpipe 9 possesses a separate discharge the problem, however, requires the installation outlet II which is preferably arranged at the of a second tank of considerable size; the necessame level as the discharge outlet 3 of the sary new foundation required for this second l r fier l a d Wh ch m y a emp y n o the tank is also an expensive item, and the entire same discharge pipe l2. The standpipe 9 may arrangement necessitates an increase in the steps a so e P v W a Cove! of operation and an increased power consumphe t al d ar e p p 3 for t e purified tion for the elevation of the liquid. liquid is positioned at the lower end of the stand- It is therefore one object of the present in- Pipe 9. From this point the purified liquid is vention to devise an improved clarifying arrangedrawn off by the pump l5 through a valve [4. ment which will overcome the aforesaid disad- During he fi filling of t e o fi r or durvantages of-clarifiers now in use. and will acing the refilling, i. e., whenever the contents of complish an improved purification of liquids the clarifier is disturbed in its rest, the valve I0 4 containing sediment with a minimum of change may be closed and opened only after the liquid and cost in installation. This and other objects in the clarifier has come to rest again and the q of the present invention will in part become obmajor portion of the sediment has settled. vious and will in part be pointed out in the fol- The diameter of the standpipe is preferably in lowing specification and appended claims when P por i n to the d e f e fi for taken in conjunction with the attached drawing large clarifiers correspondingly large standpipes in which is illustrated a diagrammatical crossshould be chosen, for example, a clarifier having sectional view of the improved clarifying ara diameter of 3 meters should have a standpipe rangement comprising the invention. .of a diameter of -60 centimeters.

In accordance with the present invention, a It is to be understood that the form of the in- 50 standpipe is added to the clarifier, which is in vention, herewith shown and described, ls'to be communication with the latter above the mud re taken as a preferred example of the same, and

pository. The standpipe which is approximately that various changes in the shape, size'and arof the same height as the clarifier, is filled up to rangement of parts may be resorted to, without the water level of the clarifier by means of the departing from the spirit of my invention, or the connecting pipe. The actual outlet pipe which is scope of the subioined claims;

' Having thus described the invention as required by the patent statutes what I claim is:

1. In combinatioma clarifier for liquids, a discharge pump therefore, means positioned between said clarifier and pump to absorb impulses in the flow of liquid from said clarifier.

to said pump, and pipe lines connecting said standpipe with the clarifier and the pump.

3. In combination, a clarifier for liquids having a funnel-shaped bottom, a discharge pump therefor, a standpipe between said clarifier and said pump, said standpipe communiaiiting with said clarifier at a point above the said funnelshaped portion ofthe clarifier, and a pipe line connecting the lower end of said standpipe with said pump.

JOHANN JOSEPH STOECKLY.

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