RU91534U1 - SUSPENSION DEVICE - Google Patents

Abstract

A device for producing a suspension containing a loading hopper, a grinding chamber, a pipe for supplying liquid to the grinding chamber, a discharge pipe of the grinding chamber and a high voltage electrode installed with the ability to supply electric pulse discharges to the grinding chamber, characterized in that it is equipped with a control valve installed in the pipeline supplying liquid to the grinding chamber, a pumping pump installed at the outlet of the discharge pipe of the grinding chamber and communicating with the discharge pipe, a recirculation pipe connecting the discharge pipe to a pipe supplying liquid to the grinding chamber at a point located between the grinding chamber and the control valve, the recirculation pipe also having a control valve.

Description

The utility model relates to the field of preparation of suspensions by wet grinding of lumpy or granular materials.

Known devices for producing suspensions by mechanical grinding of solid materials and mixing crushed fractions with liquid (ed. St. USSR No. 338250, B02C 13/04, publ. July 15, 1969; US Pat. No. 3677477, class 241-31, publ 07/18/1972; Pat. Of the Russian Federation No. 567492, CL B02C 23/22, publ. 05.07.1977). The disadvantages of the known technical solutions are low productivity, the inability to crush large pieces of material, such as ore, coal, heterogeneity of the resulting suspensions.

Also known devices for electro-hydraulic crushing of large and solid pieces of rocks, ores, coal, concrete debris of buildings, etc. (Pat. RF No. 1719075, CL B02C 19/18, publ. 03/15/1992; Pat. RF No. 1761279, CL B02C 19/18, publ. 09/15/1992; Pat. RF No. 1821242, CL B02C 23 / 22, publ. 08/05/1977). These devices contain high-voltage electrodes, the electric pulse discharges of which in a liquid medium are capable of crushing rock of any strength. But all these devices do not allow to prepare suspensions based on crushed materials.

As a prototype taken "Installation for electropulse grinding material" according to US Pat. RF №1821242 (class B02C 23/22, publ. 05/05/1977). The installation comprises a loading hopper connected to the grinding chamber, a conduit for supplying liquid to this chamber communicating with the grinding chamber, a discharge chamber of the grinding chamber and a high-voltage electrode with the possibility of delivering electric pulse discharges to the chamber. The latter, passing through the defects in the structure of the pieces, tear them apart. Difficult to crush pieces are removed from the grinding zone. However, this device does not allow to prepare a suspension, especially a homogeneous suspension of the desired density.

The task of creating a utility model is to provide the possibility of obtaining suspensions of the required consistency on the basis of solid materials of any strength.

The problem is solved due to the fact that the device for producing a suspension containing a loading hopper, a grinding chamber, a pipeline for supplying liquid to this chamber, a discharge pipe of the grinding chamber and a high-voltage electrode installed with the ability to supply electric pulsed discharges into the grinding chamber,

equipped with a control valve installed in the pipeline for supplying liquid to the grinding chamber, a drain pump installed on the discharge pipe of the grinding chamber, and a recirculation pipe connecting the discharge pipe at the point located after the pump, with the pipe supplying liquid to the grinding chamber at the point located between the chamber and the control valve, while the recirculation pipe is also equipped with a control valve.

It is preferable to install more than one high-voltage electrode, which is better to arrange one above the other vertically along the side wall of the grinding chamber. In this case, the area of influence on the crushed material of electro-hydraulic shocks increases. In order to maximize the area of electro-hydraulic destruction of the material, high-voltage electrodes can be arranged around the grinding chamber.

Moreover, any material, including even pieces of concrete blocks, can be crushed and crushed by the action of electro-hydraulic shocks to any degree.

The proposed utility model is illustrated by the following description and the accompanying drawings, in which:

- figure 1 is a schematic diagram of the installation according to this invention,

- figure 2 is an embodiment of a possible arrangement of high voltage electrodes.

The actual installation comprises a loading hopper 1 in communication with the grinding chamber 2, and a high-voltage electrode 3 installed in a known manner with the ability to send electric pulse discharges to the grinding chamber. Such electrodes are known and described, for example, in RF patents No. 1741900, No. 1790069 or No. 1821242. There can be several such electrodes. A pipe 4 for supplying a liquid, for example water, to the grinding chamber 2 is connected to the grinding chamber 2, in the case of obtaining aqueous suspensions, equipped with a control valve 5 for supplying the liquid. A discharge pipe 6 is connected to the output end of the grinding chamber 2, to which a pump 7 is connected, connected to the suspension pipe 8. The pipe 8 is connected to the pipe 4 at a point located after the control valve 5 by means of a recirculation pipe 9. The pipe 9 is also equipped with a control valve 10.

The material to be ground from the feed hopper 1 enters the grinding chamber 2, filled with liquid supplied through the pipe 4. At the same time, the flow rate is regulated by valve 5. For example, upon receipt of a water-coal suspension per 1 ton of dry coal, 200 to 500 liters of water are supplied depending on the desired concentration of the suspension. In the grinding chamber 2, the material is subjected to electropulse discharges from one or more electrodes 3. The crushed material is discharged through the discharge pipe 6 using a pump 7. 2. This process can be repeated repeatedly until the desired particle size of the solid material and the desired concentration of these particles in the suspension are achieved. . The amount of slurry withdrawn for recirculation is controlled by means of valve 10. Once the desired suspension is obtained, valve 10 is closed and the suspension is supplied to the consumer via line 8.

The proposed installation allows to obtain suspensions based on any solid materials and liquids of any consistency.

The author wishes to note that the described specific embodiment of the installation for producing a suspension is provided only to explain the essence of the utility model and that there may be various options for its specific implementation, covered by the formula of the utility model below.

Claims (1)

A device for producing a suspension containing a loading hopper, a grinding chamber, a pipeline for supplying liquid to the grinding chamber, a discharge pipe of the grinding chamber and a high voltage electrode installed with the ability to supply electric pulse discharges to the grinding chamber, characterized in that it is equipped with a control valve installed in the pipeline supplying liquid to the grinding chamber, a pumping pump installed at the outlet of the discharge pipe of the grinding chamber and in communication with the discharge pipe, a recirculation pipe connecting the discharge pipe to a pipe supplying liquid to the grinding chamber at a point located between the grinding chamber and the control valve, and the recirculation pipe is also provided with a control valve.