SU800064A1 - Device for conveying a fluid mix - Google Patents

Description

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The invention relates to hydrotransport, namely, devices for transporting slurry, and can be used for pressure transport of waste coal coal processing plants, tailings and sludges of non-ferrous and ferrous metallurgy.

A device for transporting the slurry is known, in which the slurry at various elevation levels is transported in autonomous pipelines to the suction port of the pump Clj.

However, the device has a complex control circuit, it uses only the potential energy of the flow and the use of the velocity head is excluded.

It is also known a slurry transporting device comprising a sump, vertically installed distribution pipes and a ground pump, the suction inlet of which is also placed in the sump. The device is controlled by (simpler scheme 2j.

However, the device does not use energy (potential and kinetic) of the moving slurry flows, it is possible to aerate the slurry when falling from a height, and when the packed solid has collapsed, it is possible to block the entrance to the suction nozzle and, as a result, cavitation occurs, leading to increased wear of parts.

The purpose of the invention is to increase its service life.

The goal is achieved by the fact that the distribution pipelines are cranked and installed coaxially so that

The 5 inlets are located at different heights, with the horizontal sections of the distribution pipelines being coaxial with the suction inlet.

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In addition, conical nozzles are installed at the lower ends of the distribution pipes and on the intake pipe, with this nozzle for the suction pipe being expandable and the nozzle of each distribution pipe being tapered.

To prevent slurry aeration, the lower ends of the distribution piping and suction

nozzle located below the level of slurry in the sump.

The drawing schematically depicts a device in section.

The device contains a sump 1, a grunt pump 2, which is equipped with a conically diverging nozzle 4 at the inlet and coaxially installed distribution pipes 5 and b, the input ends of which are connected to assembly boxes of 7 and 8 different height positions, and the output ends are supplied conically nozzles 9 and 10. The switching on and off of pipelines 5 and b during the launch period is carried out using reversible valves 11, located in the prefabricated baskets 7 and 8.

The device works as follows.

The ground pump 2 is started up in clear water, which is fed into the sump 1 via pipeline 12 and is sucked in by the ground pump 2 through the annular space formed between the nozzles 4 and nozzles 9 and 10. The suction nozzle 3 with a conically diverging nozzle 4 is structurally made movable (telescopic device enlarging the inlet by moving the movable part of the suction side of the pipe 3 with the confuser on the side of the pump.), which is necessary to increase the suction capacity of the ground pump 2, supplied by the factory OD run perelivaetsk slurry via changeover valve 11 through a main conduit to an emergency container 13 {not shown).

After the launch (flushing of the injection pipeline with clean water), the emergency outlets are closed, valves and hydraulic mixtures from the prefabricated boxes 7 and 8 are transported through pipelines 5 and 6 to the suction inlet 3, the movable part of which is moved to the conical nozzles 9 and 10 for the required distance. the slurry in the sump 1 in this part, which rises. Together with it, a hollow metal ppflok 14 rises, which closes the choke 15. The supply of clean water through conduit 12 is stopped.

With the necessary stop of the soil pump 2 open valve 11

on emergency releases, the mobile telescopic portion of the suction inlet 3 is pushed back and the slurry entering the sump 1 is stopped. The pump works by pumping clean water, then it stops.

The use of the device allows the use of the energy of the moving slurry stream, eliminates aeration of the sump slurry, reduces the number of hydraulic shocks.

in hydrotransport installations, eliminates cavitation, which prolongs the life of the pump installation.

Claims (3)

1. A slurry transporting device containing a sump, Q vertically installed distribution piping and an underground pump located in it, the suction inlet of which is also located in the sump J due to the fact that, in order to increase its service life, the distribution pipelines are cranked and installed coaxially so that their inlets are located at different heights, while the horizontal sections of the distribution pipes are aligned with the suction port. 2. The device according to Claim 1, which is based on the fact that on the bottom The 5 ends of the distribution pipes and the suction nozzle are equipped with conical nozzles, while the nozzle for the suction nozzle is made expanding and 0 nozzle of each distribution pipe - narrowing. 3. The device according to paragraphs. 1 and 2, in that, in order to prevent the slurry from being aerated, the lower ends of the distribution pipes and the suction inlet are located below the slurry level in the sump. Sources of information taken into account in the examination 1. A. Veselev. Mine turbomachines M., GNTI, 1952, fig. 65. 2. Evdokimov P.D. and others. Design and operation of tailing facilities of concentrating factories. 5 M., Nedra, 1978, fig. 39 (prs toip). (/ Lszh bwuh //////// t