US1843198A - Process and apparatus for regulating the density of fluids containing solid particles - Google Patents

Description

Feb. 2, 1932.

- I.. BERGUERAND 8 8 PROCESS AND APPARATUS FOR REGULATING THE DENSITY OF FLUIDS CONTAINING SOLID PARTICLES .Filed NOV. 20, 1925 Patented Feb; 2, 1932 UNITED STATES PATENT OFFICE" LUCIElT FEBGUERAHD, OI B'ZOLBEBG, om, ASBIGNOB T soomrn Om DEB are not used in grinding an the liquids in which they were in suspension,

IANUI'ACTUBEB DES GLAGES at PBODUI'llB CBIIIQUES DE samr-ooaam, CHLUNY & C'IBEY, 0F PARIS, FRANCE PROCESS AND APPARATUS FOR BEGULLTDI'G THE DENSITY OI FLUIDS comm SOLID PARTICLES Application filed November 20, 1985, Serial Io. 70,431, and in Germany November 28, 19134.

The present invention has for its purpose to provide a device designedto regu ate the density of mixtures of water and solid partides and more particularly'abrasives serving for grinding and smoothing glass, marbles and other materials.

Heretofore, in order to provide apparatus for grinding and smoothing glass, marbles and other materials, with the desiredproportions of abrasive materials, each material was first put in suspension in the water, being classified in grains of difierent sizes. The solid materials thus classified settled in the compartments of the classifying apparatus or in tanks or-deposit vats, from which they were taken to form abrasive mixtures of suitable concentration, which were then sent at the desired time to the materials to be ,20 ground and smoothed.

"The inconveniences which this manner of operation presents, reside in the discontinuity 'h d f l t th ed d a or examp e, o e annex rawings of operations, which has for its efl'ect: I 1. To permit the classified abrasive materialsto separate, during the (periods when they smoothing, from and to) accumulate at the bottom of the classifying compartments, or in the deposit vats.

It results from this that when it is desired to utilize these materials to the extent needed it is difiicult to extract them from said compartments or vats, the diiiiculty being greater as the materials are more fine, and stored for longer periods.

2. To necessitate a special regulation of the concentration for each grinding and smoothing operation.

3. To require cumbersome installations and complicated and delicate manipulation.

The present invention has for its object to overcome these defects by operating and regulating in a continuous manner the concentration of each liquid mixture which contains in suspension grains of predetermined mixtures, each of these apparatus being composed of two parts, to-wit:

1. A concentrating device or concentrator, from which on the one hand the concentrated mixture passes out, and on the other the excess of decanted liquid.

2. A regulating device operating in such manner that when the degree of concentration of the mixture should be weaker, the passage of the mixture is delayed, which increases the accumulation of grains in,the concentrator, -whereas when the degree of concentration both devices, are again sent to the classifier or are eliminated if they are in excess.

To illustrate these ideas, reference is to be showing ,an embodiment of the present invention.

Fig. 1 illustrates in vertical section the complete apparatus composed of the concentrating and regulating devices.

' Fig. 2 is a transverse section of the concentrator.

Fig. 3 shows a modified form of partition which may be used in the concentrator.

As shown in-these drawings, the concentrator is composed of a tank a having two inclined walls 6 and containing inclined separating partitions c, the effect of which is to aid the descent of the grains and the ascent of the decanted liquid. The number and the inclination of these partitions are chosen according to the volume of mixture to concentrate and according to the size and nature of the grains suspended in the mixture.

These separator partitions are formed by plates of sheet iron or other material, in flat, curved or undulated form.

A pipe d, opening at e at a suitable level, conveys to the tank the mixture of water and previously classified abrasives. Notches f in the separator partitions permit the mixture to fill equally all parts of the tank.

The bottom of the tank where the concen- There provided with a. rod m; This is connected at z to the middle point of an adjustable sprin n limiting the reciprocation of the float. t

' carries two valves p and 9 adapted to regulate the passage of the concentrated mixture through the openings 1' and a, through which this mixture flows into the receiver j. A tube t provides a communication between the up- 1 per art of the opening r and the lower part of t e o ening a.

Final y the receiver i has an outlet opening u, through which the properly con'cen-- trated mixture is carriedpaway by means of a pipe 1:. This pipe outlet w is at a suitable level in order to main-' tain the float Z immersed, A clearing cock 2:

is laced at the lower part of the pipe 0 in or er to permit the emptying and cleaning of the whole apparatus, when required.

The operatlon is-as follows:

The mixture of liquid and abrasive material arrives at e and fills the s ace between. the various partitions, due to .t e notches f.

The effect of these. partitions is to cause a more rapid descent of the grains toward the lower part 9 of the tank, thus increasing the concentration of the mixture in this lower art.. At the same time the decanted liquid 15 taken ofi by way of a tube 2'.

The concentrated mixture leaves through the openin h and is conveyed by the pipe k to the regu ating device.

This is so arranged that, in normal operation, thevalves p and g are moderatelyv open. If the concentration of the mixture in creases, the float rises. The valves open wide and the circulation of the mixture is accelerated which reduces its concentration in hopper g. If, on the other hand, the density of the mixture diminishes the valves reduce the section of the passage, which permits the mix ture to become roperly concentrated at g.

and q. It'is also possible to operate'with a single valve by eliminating the tube t.

It is to be understood that the construction described above is given only by way. of example, and that the shapes, dimensions and structural detailed the elements constituting the invention may be modified-as needed.

What I claim as my invention is:

has a goose neck whose 1. In an a paratus of the class described; the combination of a chamber having inclined clarified waterya chamber containin a float l and connected to the bottom of t e first named chamber,and a valve controlling such the movements of the float due to the density of the liquid issuing from the first named chamber. c 2. In an apparatus of the class described,

the combination with a vessel containing a liquid and having in the bottom thereof solid plaorticles, of a container for a liquid issuin' partment in the base of said vessel, an outlet .at the top of said vessel vfor the clarified liquid, a tank containing a submerged float connected to the first named vessel and a valve connected to the float and interposed between the two vessels, said valve regulating the density of the li uid which issues from the first named vesse LUCIEN BERGUERAND.

The device s own comprises two valves p connection and actuated in accordance. with I a In an apparatus of the class described,

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