BRPI1004773A2 - silo for crushed sand separation from powdery material - Google Patents

Abstract

SILO FOR SEPARATION OF GRAY SAND FROM PULVERULENT MATERIAL. The present patent refers to a way to use the silo allowing the separation of sand from powdery material, which in excess in the use of sand in civil construction, is harmful. It makes it possible to use sand within the norms of the Brazilian Association of Technical Standards - ABNT, and also to use this powdery material now separated in specific uses such as laying pipes.

Description

DESCRIPTIVE REPORT OF THE INVENTION PATENT "SILO FOR SEPARATION OF CRYSTAL MATERIAL"

The present invention aims at a crushed stone silo for separating crushed sand from pulverulent material for use in quarrying and crushing, and which was originally constructed with a view to using no water or exhaust system which makes the process more expensive. It is highly polluting and makes it possible to classify the sand.

Gravel silos used in quarries after the crusher are well known, comprising a square, vertical, open top reservoir with mesh, which receives the gravel after passing through the crusher, through conveyor belts, and provided with a lower mouth. proportions smaller than the upper aperture, from which material classified as sand, on the side angled aperture, which has positioned the screen through which the powdery material exited, with the possibility of adjusting this content of powdery material to compose the final product that is the sand.

Despite the widespread use of this type of gravel silo with water wheel or exhaust system to obtain sand, these systems have negative aspects, the very high cost of installation and maintenance and also the need for a treatment system. wastewater, as the waste from these processes is highly harmful to the environment. In view of these negative aspects and the purpose of overcoming them, the SILO FOR SEPARATION OF BRTTA SAND OF PULVERULENT MATERIAL was developed, without the use of a water wheel system or exhaust system as shown in the attached Figures. Which consists of using the usual gravel silo with an opening, in the dimensions proportional to the silo size (Figure Ol - item 01, 02, 03 and 04), in the angled side wall with a stainless steel fabric screen (Figure 02 - item 09) in the mesh thickness as a function of crushed material, an electric motor (Figure 02 - item 07) and plunger to generate a vibration in the screen (Figure 02 - item 08), providing the passage of the pulverulent material through the mesh. screen (Figure 02 - item 10) and this material leaves the silo for storage for later use (Figure 02 - item 12). Leaving the pulverulent material on the side, the material that comes out from the bottom is a classified sand (Figure 02 - item 11), adjusted according to the dynamics of the whole process, and the raw material used, type of stone that was crushed.

This way of using the silo makes it possible to separate the sand from the pulverulent material, which in excess of the use of sand in construction is harmful. It allows the use of sand within the standards of the Brazilian Association of Technical Standards - ABNT, and also uses this powdery material now separated in specific uses such as pipe laying. Figure 01 - silo in plant and Figure 02 - silo in section, attached, shows the equipment and process, from the entrance of the crushed rock coming from the conveyor belt to the exit of the sand classified by the bottom and the pulverulent material being removed from the side of the silo where the screen is being vibrated by the piston driven by the electric motor.

The patent can be easily understood from the attached figures:

Figure 01- represents the silo in plan, highlighting the opening options / positions of the screen (item - 01,02,03 and 04);

Figure 02 - represents the silo in section, through it we can see: (5) gravel falling from the silo, (6) gravel coming from the crusher, (7) electric motor, (8) vibrating screen, (9) screen stainless steel fabric mesh, (10) pulverulent material outlet after passing the side mesh screen, (11) graded gravel sand outlet, (12) ground support and (13) conveyor belt.

Claims (2)

1. "SILO FOR SEPARATION OF PULVERULENT CRYSTAL SAND", characterized in that it is understood to be gravel silo by a square, vertical, open top reservoir with screen, which receives the gravel after passing through the crusher through conveyor belts, and having a lower mouth of smaller proportions than the upper opening, from which material classified as sand, on the side angled opening, which has positioned the screen through which the powdery material came out, with the possibility of adjusting this content. of pulverulent material composing the final product which is the sand. 2. "SILO FOR SEPARATION OF PULVERULENT CRYSTAL SAND", characterized by using a stainless steel woven screen (Figure 02 - item -09) in the opening made in the side wall of the gravel silo, at an angle according to the surface of the silo approximately forty five degrees with the flat ground, and applied to this screen as shown in the accompanying figures, to allow the passage of the pulverulent material separately (Figure 02 - item 10), a vibration through the piston (Figure 02 - item 08) and electric motor (Figure 02 - item 07) adjusted according to the type of crushed material.