US1671115A - Apparatus for separating liquids of different specific gravities - Google Patents

Description

May 29, 1928.

W. LINNMANN, JR

APPARATUS FOR SEPARATING LIQUIDS OF DIFFERENT SPECIFIC GRAVI'IIES Filed Nov.-22. 1926 f Patented May 29, 1928. I

I UNITED STATES PATENT WILHELM LINNMANN, JR., ESSEN-ALTENESSEN, G R

FFICE.

UED

Application filed November 22, 1.926, Serial no. 149,851, and iii Germany J'anuaryjS, 1828- My invention relates to improvements in apparatus for separating liquids of difli'erent specific gravities, and more particularly in apparatus for separating light liquids 6 from waste-water, in which the outlet is adapted to be automatically closed by means of a float valve as soon as a certain amount- 90 outlet, the said outlet being directed u wardly within the tank and adapted to' e closed by a valve disk connected with a floating hood surrounding the inlet end of the outlet. Thus while t e layer of benzol collected on the surface of the water isthin, the valve disk is held a certain distance away from the inlet end of the outlet pipe, and when a thick layer of benzol has collected on the top of the water the floating hood sinks into the said benzol by reason of the reduced specific gravity of the medium in which it is immersed, until finally the valve disk is seated on the inletend of the outlet and the delivery of waste-water is revented.

ther objects of the improvements will be understood from the following description.

For the purpose of explaining the inven- 40 tion several examples embodying the same have been shown. in the acompanying drawings in which the same letters of reference have been used in all the views to indicate corresponding parts. In said drawings, Fig. 1, is a sectional elevation showing the apparatus,

Fi 2, is a partial sectional elevation showlng a modification, and

Fig. 3, is a partial sectional elevation showing another modification.

In the example shown in Fig. 1 my improved separating apparatus comprises a tank a divided by a vertical partition 0 having in its upper part an opening 9 into two .5 chambers b and h communicating with each other at the bottom of the tank and through inlet end of the the opening 9. The chamber h is provided with an inlet pipe 2', and the chamber 6 with an outlet pipe 7', the outlet pipe 7' having an inner portion at directed upwardly. The ortion d of the outlet pipe is surrounded y a tubular member m which is open atits top and bottom, and which is surrounded by a pipe e constructed at its bottom end in the form of an annular float is. To a bar a fixed to or made integral with the pipe 6 a valve disk 7 is secured which is in position for closing the inlet end of the pipe section d. The top part of the pipe e extends into a fixed hood t.

In the operation of the apparatus the waste-water having benzol admixed thereto is delivered into the chamber h of the tank through the pipe 71, and it rises within the said chamber so far that the passage n through which the chambers b and hcommunicate with each other is closed. Thus the benzol is separated from the water within the chamber h, and there is only waste water and .no benzol within the chamber 6. After a while the water within the chamber 6 closes the tubular member an at its bottom and thereafter the level of the liquid rises to a' point above the bottom end of the opening 9. Now the benzol collected on the surface of the water flows into the chamber 6. 4

through the pipe d, 7'. It will be noted.

however that no benzol is discharged, because the liquid is supplied to the tubular member m 'inclusively from the bottom thereof. At the beginning of the operation the level of the liquid will not rise above the ipe (I. But when the layer of benzol collected on the surface of the water is increased, the level of the benzol within the part of the chamber 7) outside the tubular member m will rise, while the level of the water within the tubular member m will not rise above the inlet end of the pipe d, by reasonof the different specific gravities of the liquids. After some time the benzol rises so far that it closes the hood t at its bottom end, whereupon the air confined within the said hood is compressed and the rising of the benzol to the top of the pipe 6 is prevented. Further, the float 7a, which is now immersed into a liquid of lower specific gravity, sinks so far that the disk f closes the pipe section. (1, whereupon the dischar e of water is interrupted. The water wifi rise above the disk f and force the same downwardly and on its seat.

Now the benzol is tapped oil, whereupon water from the tubular member m flows into the outer part of the chamber 72, so far that the float is has again the tendency'to raise the disk f from its scat. By tap ing oil the benzol, communication between t 1e inner part of the pipe 6 with the'outer airis again established, and further the air will gradually flow between the valve f and the pipe (Z so that the float k can readily. raise the valve disk f from 1 its seat, whereupon the discharge of the waste-water through the pipe d is continued.

In Fig. 2 I have shown a modification in which the top plate of the hood is depressed downwardly and into the top part of the pipe e. Thereby the function of the hood preventing the flow of benzol above the top part of the pipe 6 is further improved. Otherwise the construction of the apparatus is the same as that described with reference to Fig. 1, and the same letters of reference have been used to indicate corresponding parts.

In the modification shown in Fig. 3 the pipe e connected with the float 1c ends at its top into a portion 11; of reduced diameter surrounded by a hood t of comparatively small diameter. Further, the valve disk f is connected with the pipe e by means of a tubular portion 0 formed with one or more openings :1: through which the waste-water ha's'access to the part above the valve disk f and the connection of the inner part of. the tubular member m' with the outer air is established after tapping off the -benzol, as has been described with reference to Fig.v 1.

While in describing the'invention reference has been made to particular examples embodying the same I wish it to be understood that I do not limit myself to the constructions shown in the drawings and that various changes may be made in the eneral arrangement of the apparatus and t e c011- struction of its parts without departing from the invention.

I claim:

different specific gravities, com rismg a tank having an inlet and'an out et, a tubular tending upwardly therefrom, a valve diskcarried by said float and adapted to close said plpe, and a fixed hood surroimdlng the top part of said float.

2. An apparatus for separating liquids of different specific gravities, comprising av tank having an inlet-and an outlet in the form of a liquid seal and having an overflow, a

tubular member within said tank open at its top and bottom, and having its top part located above the level of said overflow, a pi pe connected with said outlet and extending upwardly therefrom and into said tubular member, an annular float surrounding said tubular member and extending upwardly therefrom, a valve disk carried by said float and adapted to close said pipe, and a fixed hood surrounding the'top part of said float. 3. An apparatus for separating liquids of different specific gravities,comprising a tank having an inlet and an outlet, a tubular member within said tank open at its top and bottom, a pipe connected with said outlet and extending upwardly therefrom and into sai tubular member, an annular float surrounding said tubular member and extending upwardly therefrom and reduced in diameter at its top, a valve disk fixed to a tubular part depending from the top part of said float and into said tubular member and into position for closing said pipe, and a fixed hood surrounding the reduced top part of said 4. An apparatus for separating liquids of different specific gravities, comprising a tank having an inlet and an outlet, a tubular member within said tank' open at its top and bottom, a pipe connected with said outlet and extending upwardly therefrom and into said tubular member, an annular float surrounding said tubular member and ex tending upwardly therefrom, a valve disk carried by' said float and adapted toclose said pipe, and a fixed hood surrounding the .top part of "said float, the top wall of said hood being directed downwardly and into said float.

In testimony whereof I hereunto aflix my signature.

.- WILHELMv LINNMANN, JR-

Images