RU2212274C2 - Vibroshaker - Google Patents

Abstract

FIELD: concentration of minerals; ore washing units. SUBSTANCE: vibroshaker has inclined screen whose upper part includes injectors revolving in direction opposite to flow of starting material. Injectors are provided with additional plate-type rings with orifices-nozzles mounted between them; plate-type rings of next injector are arranged in staggered order. Distance between plate-type rings and injectors are regulated depending on granulometric composition of starting material and content of fragmental material. EFFECT: increased degree of disintegration of clay associations; reduced losses of energy; removal of abrasive load on injector surfaces. 2 dwg

Description

 The invention relates to the field of mineral processing, in particular to devices for washing ores and difficult to wash materials.

 Known vibration flushing plants, which are flat vibrating screens with irrigation, used to separate dusty and silty particles, as well as suspensions [1].

 A significant drawback of vibratory washing plants is the sticking and rolling of difficult-to-wash materials into large conglomerates.

 Closest to the technical nature of the claimed is the "Apparatus for washing materials containing clay", where a fixed inclined screen is equipped with an upper part consisting of nozzles that rotate against the movement of the flow of the source material, and elastic jumpers are installed between them, while the nozzles are made in this way that provide a regime of cutting with a moving stream of water only above the screen and forcing compressed air only under the screen, which causes active vibration of the elastic jumpers, contributing to their the turn of intensifying the separation of the clay component of the material [2].

 The disadvantage of this device is both the uneven and short-term stay of the disintegrated material in the zone of action of the water jet, and the reduction of dispersion from abrasion and impact forces.

 The essence of the invention lies in the fact that the vibrating screen for the disintegration of high clay materials is made of a fixed inclined screen equipped with an upper part consisting of nozzles rotating against the flow of the source material, characterized in that the nozzles are equipped with additional disk rings between which nozzle openings are installed, and the disk rings of the next nozzle are staggered, while the distance between the disk rings and nozzles is regulated depending on particle size distribution of the source material and the content of clastic material.

 In the claimed solution, the additionally installed disk rings on the nozzles evenly distribute the material on the surface of the nozzles, and the checkerboard arrangement of the disk rings forces the clastic material to constantly rotate when moving, each time substituting a displaced part of its surface under a stream of water. This reduces the unproductive energy loss of the water jet and achieves a high degree of rational use of energy. When installing the disk rings, the abrasive load on the surface of the nozzles is removed, which are covered with clay material during the operation of the apparatus, i.e. additionally lined with a viscous clay mass, the degree of dispersion from abrasion and the action of impact forces also increase. The cup rings are made of wear-resistant material, when a certain degree of wear is reached, they are replaced. In this solution, it is possible to exclude the presence of elastic jumpers between the nozzles, where a part of the material, mainly disintegrated, will wake up in the space between the nozzles and the disk rings. The vibro-moving state of the medium and additional disintegration of the material occur due to the injection of air jets under the lower part of the screen. In this case, the transfer of the screen to an active vibrating state is not necessary. Thus, a comparative analysis allows us to conclude that the criterion of "inventive step" is met.

 Figure 1 shows a diagram of a screen with rows of nozzles with disk rings, and figure 2 shows a working variant.

 Figure 1 shows a diagram of the screen, the upper part of the screen consists of nozzles 1 with disk rings 2 mounted on them. In the gap between the guide rings there are holes-nozzles 3 for supplying a jet of water and air. The nozzles are fixed on the side wall 4 of the device.

 The process of disintegration occurs as follows: the source material enters the upper part of the screen with nozzles with disk rings 2 rotating against the flow of material. The debris material is fed to the upper part of the screen and moves downward along the inclined plane of the screen. Large clastic material, the dimensions of which are larger than the dimensions of the space between the nozzles and the disk rings, moves over the disk rings. A large particle moving along the stream due to the staggered arrangement of the rings constantly rotates and is subjected to the cutting action of a fan stream of water directed against the movement of the source material. Part of the material, the size of which is smaller than the size of the space between the nozzles and the disk rings, wakes up in the lower part of the screen.

Literature
1. Troitsky V.V. "Flushing and Deslaming Minerals." M .: "Nedra", 1988.

 2. RF patent 2171143. RF MKI B 03 V 5/02, 7/00. Matveev A.I., Yakovlev V. B., Eremeeva N.G., Bozhedonov A.I. Apparatus for washing materials containing clay.

Claims (1)

 Vibrating screen for the disintegration of high clay materials, consisting of a fixed inclined screen equipped with an upper part consisting of nozzles rotating against the flow of the source material, characterized in that the nozzles are provided with additional disk rings between which nozzle openings are installed, and the disk rings of the next nozzle are placed in a staggered manner, while the distance between the disk rings and nozzles is regulated depending on the particle size distribution of the material and content of clastic material.

Images