FR2467019A1 - HYDRAULIC SEPARATOR - Google Patents

Abstract

This hydraulic separator consists of a tank 3 of rectangular cross section of constant width and whose vertical section is a rectangular trapezoid, the large base 4 corresponding to the upper part of this tank, which comprises at the upper end of its inclined side and below its upper edge a weir 5; a chimney 8 which is extended at its upper part, located below the level of the upper edge of said tank, by a discharge chute for the light elements. The separator comprises a system 11 for removing the heavy elements, a device 7 for injecting a liquid and means for introducing the products to be separated. Application to the metallurgical industry. (CF DRAWING IN BOPI)

Description

The present invention relates to a new separa-

  hydraulic system which allows the separation of

  different situations with a liquid such as water.

  To classify such products, there are currently several types of devices, including

  based on gravimetric techniques.-

  A first category of apparatus for separating elements of different densities is constituted by hydroclassers that use the difference in sedimentation

  in a liquid, usually water. These devices

  simple ception, can only be used to separate fine products because the classification of these products takes place by equivalence, that is to say according to the weight and not

according to the density of the particles.

  A second category of devices consists of the tables, dormantes or jolts, which separate the products by driving the less dense elements by a fluid film. The main disadvantage of these devices is to treat only fine particles or relatively

  fine, that is to say of diameter less than 3 millimeters.

  Other types of devices include

  pneumatic tables which are based on the principle of

  inclined vibrating dormers, the ascending slope being the meaning

  movement of products remaining in contact with the

  mera. The light particles are fluidized by the air that crosses the table, move away from it and are directed

  this air flow towards the lower part of the pneumatic table.

  matic. The densest products stay in touch and

  vibrations, so they go back

  attempt the apparatus and evacuate at the top. These

  appliances only deal with products that are

  less than 60 millimeters and which are very dry.

  Finally, we will mention the apparatuses based on the following principle: the materials to be classified are distributed on the surface of a fluid or a suspension whose density is equal to that of the separation, the fraction of higher density precipitating while that lower density floats. If the principle is simple, its practical application -2- is quite complicated and requires the use of many auxiliary devices. These devices can classify

  products of any size, in theory at least.

  As can be seen, all these devices of the prior art have a number of disadvantages that they have in common in common: in particular the fact of being able to treat only small products, to understand mechanical devices in motion, complicated and energy consuming, to be difficult setting and

  can not be fed with products of tourmen-

  or tending to agglomerate with each other.

  Also an object of the present invention is a

  hydraulic separator which allows the densi-

  of coarse particles of tormented form.

  Another object of the invention is a separator of

  this type is simple to adjust and easy to drive.

  An object of the present invention is a separation

  hydraulic system which has no moving parts in

direct discharge with separation.

  Another object of this invention is a separation

  it is robust, simple and economical to use.

  These goals and objects, as well as others that

  appear later, are affected by a hy-

  hydraulic system according to the present invention which is constituted by a rectangular cross-section tank of width

  constant and whose vertical section is a trapezoid recess

  tangle, the large base corresponding to the upper part of

  this tank, which has at the upper end of its cable

  inclined and below its upper edge a spillway;

  a chimney which is extended to its upper part,

  killed below the level of the upper edge of this tank,

  by a chute of evacuation of the light elements; the sepa-

  also incorporating a system for evacuating

  heavy equipment, a device for injecting a liquid and

  means for introducing the products to be separated.

  Advantageously, the chimney is a parallelepiped

  square section, the upper edge of which is opposite to the

-3-

  evacuation lottery is extended by the means for

  the products to be separated which are constituted by a

  nal, slightly inclined to the horizontal.

  Preferably, the system for evacuating

  heavy elements consists of a raclette chain which

  is mounted on three rolls: one of them being

  above the small base of the tank, the other two

  above this tank, one above the spillway and one above

of both being engine.

  Advantageously, this tank further comprises a deflector located under the chimney and above the return roller disposed above the small base of this tank, and two flaps fixed along the two sides of the tank so that the heavy elements accumulate and

  stay on the path of the scrapers.

  As for the device for injecting a liquid, it

  is preferably located at a point in the tank such as

  riveted liquid does not interfere with the settling of heavy products.

  Preferably, this tank comprises in its part su

  a system of removable strips, which allows the adjustment of the separation of products by increasing or

  decreasing the free level of the liquid used.

  The following description, which does not present

  no limiting character, must be read with reference to the appended figures, among which:

  FIG. 1 represents an elevational view of a separa-

  hydraulic generator according to the present invention; FIG. 2 is a sectional view of such a separator along the line AA of FIG. 1;

  FIG. 3 is a cross-sectional view of this sepa-

  line BB in Figure 2.

  As can be seen in Figure 1, a separate

  hydraulic generator according to the present invention referenced 1

  as a whole is mounted on a frame 2.

  This hydraulic separator 1 is constituted by a vessel 3 of rectangular cross section, of width

  constant and whose vertical section is a trapezoid recess

  -4- tangle. The big base of it corresponds to the part

high 4 of this tank 3.

  The tank 3 comprises, on the one hand, a weir 5 which is located at the end of its inclined side 6 and, on the other hand, an inlet 7 under pressure of liquid such as water.

  A chimney 8 which is a parallel parallelepiped

  In the tank 3, it is extended at its upper part, which is situated below the level of the upper edge of this tank 3, by a chute 9 for evacuating the light elements. A. the opposite of this chute 9

  is arranged a channel 10 (Figure 2) which is slightly inclined

  born from the horizontal by which the products to

  classify are introduced into the chimney 8.

  The hydraulic separator 1 comprises a recovery system for the heavy elements which, according to this embodiment, consists of a squeegee chain 11 which is mounted on three rollers: the roll 12 which is situated above the small base 13 of the tank 3, the roller 14

  which is arranged above the spillway 5 and which, in this

  embodiment, drives the squeegee chain 11, and the roller 15 being mounted vertically of the roller 12 and in

  the same horizontal plane as the roller 14. This roller 15

  on adjusting the tension of the squeegee chain 11.

  According to this example, the tank comprises a deflector

  16 located under the chimney 8 and above the roller 14,

  if, as shown in Figure 3, two flaps 17 and 18 fixed along the two faces 19 and 20 of the tank 3 so that the heavy elements accumulate and remain

on the path of the scrapers.

  The device 7 for injecting a liquid is, in

  this example, located on the opposite side to the inclined plane at

  of the chimney 8 so that the arrival of the liquid

  does not interfere with the settling of heavy products.

  Finally, the tank 3 is provided at its upper part, for example on its face 19, with a system 21 of strips

  removable: this allows the adjustment of the separation of

  by increasing or decreasing the free level of the

used.

-5-

  The operating principle of the heat separator

  1 consists in canceling or reversing, in the upper part

  8, the action of the forces due to the

  on the products to be eliminated.

  For this purpose the products to be classified are introduced into the chimney 8 by the channel 10 in a tangential way to

  the surface of the liquid, so with a speed whose composition

  vertical health is, so to speak, zero. These products are

  from the rising water flow in the chimney

  born 8 a thrust equal to the weight of the density elements of

chosen separation.

  Thus the light elements float on the surface of the liquid in the chimney 8 and are driven by it in the

  evacuation chute 9. On the other hand, the heavy elements

  bent at the bottom of the tank 3 where they are reassembled

  moldboard 5 by the squeegee chain 11.

  The system 21 of removable strips makes it possible to

  xer the level of overflow of the liquid and thereby

  control the upward velocity of this liquid in the

  born 8: the more the level of overflow is close to the edge

  bottom of the tank 3, plus the upward velocity of the liquid

is high.

  Those skilled in the art will appreciate the advantages of such a hydraulic separator. Notably note its simple and safe operation since, on the one hand, the liquid used, the water generally, does not need any particular treatment and can be recycled after a possible passage

  on a sieve, and, on the other hand, there is no need for inter-

  come after setting the water level in the tank. In addition, it should be noted that the separations made depend practically not on the size of the products to be treated nor on their flow, which can vary on a large scale.

2467019.

Claims (7)

  1. Hydraulic separator characterized in that it consists of a cross-section tank   rectangle of constant width and vertical section   The wedge is a rectangle trapezium, the large base corresponding to the upper part of this tank, which has at the upper end of its inclined side and below its upper edge a weir; a chimney that is extended to its   upper part, below the level of the upper edge   of said tank, by a discharge chute   light; said separator also comprising a system   to evacuate the heavy elements, a device for   injecting a liquid and means to introduce the to separate.   2. Separator according to claim 1, characterized in that said chimney is a parallelepiped to   square section with the upper edge opposite the said   evacuation lottery is extended by the said means for troduce the products to separate.   3. Separator according to claim 2, characterized in that said means for introducing the products to be separated are constituted by a weakly inclined channel. compared to the horizontal.   4. Separator according to claims 1 to 3 taken   separately, characterized in that said system for discharging the heavy elements is constituted by a squeegee chain which is mounted on three rollers: one of them being located above the small base of said tank, the two   others above the said tank, one above   moldboard and one of two being engine.   5. Separator according to claims 1 to 4 taken   separately, characterized by the fact that said vessel comprises   in addition a deflector located under said chimney and   top of the return roller disposed above the small base of said tank, and two flaps fixed along   both sides of said tank so that the elements   heavy elements accumulate and remain in the path of said squeegees.   Separator according to claims 1 to 5   separately, characterized in that said device   to inject a liquid is located at a point of said   ve such that the arrival of the liquid does not interfere with the settling heavy products.   7. Separator according to claims 1 to 6 taken   separately, characterized in that said tank comprises at its upper part a system of removable strips, this   which allows the adjustment of the separation of products by increasing   or by decreasing the free level of the liquid used.