RU1781390C - Method and device for mining sapropel - Google Patents

Abstract

Usage: mining sapropel from the bottom of reservoirs. SUMMARY OF THE INVENTION: annular ejectors are connected to the water supply pipe. The annular ejectors are arranged coaxially, oppositely directed and located in front of the confusers. The confusers are connected to the diffusers and are located inside the suction tips. An ejection flow pulsator is installed in the water supply pipe. The ejection flow is divided into oppositely directed flows in annular ejectors. The flows are fed into separate hydrotransport pipelines in a pulsating mode. 2 sec and 1 z.p. f-ly, 2 ill.

Description

The invention relates to the production of fertilizers and can be used to extract sapropels from the bottom of fresh water bodies.

A known method for producing sapropel is to supply an ejection stream to the hydrotransport pipe.

However, this method is ineffective due to the fact that the working surface of the ejection flow is not fully utilized.

Known technical means for implementing the described method includes a hydrotransport pipe, at the end of which there is a cylindrical suction tip, inside which a diffuser connected to the confuser is placed, and an annular ejector equipped with a HOSE pipe is installed in front of the latter.

Its disadvantage is low productivity, high energy costs

and, as a result, the cost of extracting sapropel is high.

The aim of the invention is to increase productivity by making fuller use of the working surface of the ejection stream.

This is achieved by ejecting

 the stream is divided into two opposite

directional flow, each of which

served in a separate hydrotransport

pulsating pipeline.

The device for carrying out the method is equipped with an additional hydrotransport pipe with an additional suction tip, while the ring ejectors of the suction tips are aligned, directed opposite and have a common drain pipe, the inlets are connected through a cylindrical pipe with a suction nozzle, and additional suction pipes are installed under the confusers

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nozzles, moreover, the common water supply pipeline is provided with a source of pulsating water supply of the ejection flow, and the annular ejectors are provided with guides inside, placed at an angle to the axis of the hydraulic mixture flow.

The described method makes it possible to sharply intensify the process of sapropel production, to make the production of fertilizers based on it cheaper in comparison with the production of fertilizers currently used due to the creation of pulsations that are transmitted to the environment (sapropel), providing a preliminary transfer of the sapropel formation to the moving mass, its weighing and suction; many times increasing the working surface of the ejection stream; using slurry streams as additional ejection streams and thereby creating three or more rarefaction regions.

Figure 1 shows a device for implementing the method, a longitudinal section, and a flow diagram; figure 2 is the same, cross section.

The device consists of coaxially arranged outer ring 1, inner ring 2 with conically converging tips 3 at its ends, flanges 4 with tips 5, repeating the angle of inclination of tips 3 to form annular converging ejectors 6 by interfacing them with by means of clamps a, set at an angle that ensures twisting of the flows to increase the vacuum effect, the flanges 4 being connected by means of gaskets 7 and screws 8 to the outer ring 1, forming an annular chamber 9. In addition, the outer ring 1 has common water supply pipe 10 with a valve 11 for supplying high pressure water to the annular chamber 9 in a pulsating mode to disturb the device, the inner ring 2 is a pipe 12 passing through the outer ring 1 and connecting the inner cavity of the ring 2 with the environment (sapropel) and the flanges 4 are connected to cylinders 13 having a nozzle 14 and outlet pipes 15, between which diffusers 16 are installed with necks 17 and confusers 18, while the nozzles 14 and the pipe 12 are equipped with intake nozzles 19, or one m nozzle (sump).

The device operates as follows.

High pressure water is pulsed through the common water supply pipe 10 into the annular chamber 9 by rotation with an adjustable frequency of the valve 11, which, while passing between the clamps and converging ejectors b, twists, increasing the effect

rarefaction, and ejected at high speed in opposite directions, forming hollow ejector flows, which (locked on the longitudinal axis of the device, are directed through confusers

0 18 into the necks 17, are instantly compressed, and then expand and sent to the diffusers 16, forming in the device by interaction with the environment inside its three closed rarefaction areas: inside

5 of the ring 2 (region 1) and inside the cylinders 13 (regions II, III) into which the environment (suspended sapropel) is sucked through the intake nozzles 19, the pipe 12 and the nozzles 14, and capture the surrounding

0 medium is carried out both by the outer surface of the hollow ejection flows and the inner one, while the hydraulic mixture of the I rarefaction region 5 also takes part in the creation process of the I and III rarefaction regions, and when the number of rarefaction regions, for example, IV and V increases (in the drawing not shown) hydraulic mixtures of II and III regions also take part in their creation. From the diffusers 16, the hydraulic mixture is discharged through the discharge pipes 15 to the storage location.

Due to the fact that the water in the device is ejected through annular ejectors by thin converging flows, its consumption

5 in comparison with existing devices is negligible, significantly less energy consumption.

Claims (3)

1. A method for producing sapropel, including supplying an ejection stream to the hydrotransport pipeline, characterized in that, in order to increase production efficiency by increasing the working surface of the ejection stream, 5 completeness of its use and the creation of additional rarefaction zones, the ejection flow is divided into oppositely directed hollow converging flows, each of which is fed into a separate 0 hydrotransport pipe in pulsating mode with subsequent twisting. 2. A device for producing sapropel, including a hydrotransport pipe with a suction nozzle, inside which there is a diffuser and a confuser connected with it, and an annular ejector installed in front of the confuser on the suction nozzle and connected to a water supply pipeline, characterized in that it is provided additional hydrotransport pipe with a suction tip, an additional annular ejector connected to a water supply pipe and additional suction nozzles with a suction vayuschimi nozzles, the primary and secondary ring ejectors are arranged coaxially in opposite directions and formed conically converging, and the primary and secondary hydrotransport pipeline connected to the main suction nozzle posredRSG & / 0 # a cylindrical nozzle, the suction nozzles of the additional suction nozzles located outside on the cylindrical nozzle under the confusers of the main and additional suction tips 3. The device according to claim 2, characterized in that the water supply pipe is provided with a pulsator for ejection flow, and the annular ejectors are provided with guides located at an angle to the axis of the hydraulic mixture flow. and Fng2. nineteen