RU2635944C1 - Device for hydrotransportation of loose materials - Google Patents

Abstract

FIELD: transportation.

SUBSTANCE: device for hydrotransportation of loose materials comprises loading and unloading devices, a housing, in the internal volume of which a drive shaft with a nozzle mounted thereon is located, a clarified phase outlet branch pipe communicating with a centrifugal pump, and a condensed phase outlet branch pipe connected to a mixing chamber. The nozzle is made in the form of an elastic screw. The unloading branch pipes of the clarified phase and the condensed phase are mounted in the housing opposite each other, in the unloading area in the upper and lower parts thereof, respectively.

EFFECT: creating a relatively simple and reliable device for hydrotransportation of loose materials, which ensures low wear of working parts during operation.

1 dwg

Description

The proposed device is intended for the hydrotransport of bulk materials, sludge in various industries and is intended for pumping liquids with a significant suspension content, especially with abrasive ability. The use of conventional pumping equipment to solve such problems leads to its rapid failure due to wear of the pump impellers by the abrasive action of the solid phase.

A device for transporting suspensions containing a stationary body, a chamber for separating the suspension, mounted for rotation around a vertical axis, a pump connected to the upper part of the chamber, and a water-jet elevator [USSR copyright certificate No. 1183717, BI No. 37 07.10.85].

The disadvantages of this device include the complexity of the design and low productivity of the separation device.

Closest to the proposed is a device for transporting suspensions [US Pat. 2212566 Russian Federation, IPC 7 F04D 13/12. A device for transporting suspensions / A.I. Zaitsev, A.E. Lebedev, D.O. Bytev, I.A. Zaitsev. - Publ. 09/20/03, Bull. No. 26], containing loading and unloading devices, a separator consisting of a housing, in the internal volume of which there is a vertical drive shaft with a conical nozzle mounted on it. A clarified phase outlet pipe connected to the centrifugal pump and a liquid supply pipe connected to the mixing chamber (water-jet elevator) are attached to the separator.

The disadvantages of this device include the complexity of the design and the large dimensions of the separation device.

The objective of the invention is the creation of a relatively simple and reliable device for the hydrotransport of bulk materials, providing low wear of the working bodies during operation.

This object is achieved by the fact that in the device for the hydrotransport of bulk materials containing loading and unloading devices, a housing in the inner volume of which there is a drive shaft with a nozzle installed on it, a clarified phase outlet pipe in communication with a centrifugal pump, and a condensed phase discharge pipe, connected to the mixing chamber, the nozzle is made in the form of an elastic screw, and the discharge pipes of the clarified and condensed phases are installed opposite each other in the housing, in the discharge zone in the upper her and its lower parts, respectively.

The drawing shows a diagram of a device for the hydrotransport of bulk materials.

The device for the hydrotransport of bulk materials contains a loading device 1 and unloading 2, a housing 3, in the internal volume of which there is a drive shaft 4 with a nozzle mounted on it, which is made in the form of an elastic screw 5. The outlet pipe of the clarified phase 6 communicates with a centrifugal pump 7. The pipe the output of the condensed phase 8 is connected to the mixing chamber 9. The centrifugal pump 7 and the shaft 4 are driven from electric motors 10 and 11, respectively.

A device for the hydrotransport of bulk materials works as follows.

Bulk materials to be transported together with the transporting liquid are fed through the loading device 1 into the internal volume of the housing (separator), where they are captured by an elastic screw 5 and transported to the discharge zone. When moving in the internal volume of the housing when interacting with the auger, the flow loses speed, with the intensive deposition of particles. The largest solid particles, which are dangerous for the pump, settle to the bottom of the casing and are transported by an elastic screw to the condensed phase outlet pipe located in the lower part of the housing, and the liquid purified from large solid particles rises to the upper part and through the clarified phase outlet pipe, installed in the upper part of the housing, is sucked in by a centrifugal pump.

The clarified phase, purified from large solid particles, is accelerated in a centrifugal pump and sent to the mixing chamber, which is a water-jet elevator, and here the condensed phase (the largest solid particles with a certain amount of liquid) enters the condensed phase outlet. In the mixing chamber, the clarified phase dispersed by the centrifugal pump captures the condensed and pumped medium is sent to the discharge device and then moves as a unit.

Due to the fact that the nozzle is made in the form of an elastic screw, for example rubber or plastic, the intensity of its wear decreases when it contacts a solid phase, including an abrasive one.

Thus, in the proposed device due to the separation of the transported material into the thickened and clarified phases, solid particles are accelerated by the stream of clarified phase and do not enter the centrifugal pump, thereby significantly reducing the wear rate and, consequently, increasing the service life of the equipment.

Claims (1)

A device for the hydrotransport of bulk materials containing loading and unloading devices, a housing in the inner volume of which there is a drive shaft with a nozzle installed on it, a clarified phase outlet pipe in communication with a centrifugal pump, and a condensed phase outlet pipe connected to the mixing chamber, characterized in that the nozzle is made in the form of an elastic screw, and the discharge pipes of the clarified and condensed phases are installed in the housing opposite each other, in the discharge zone in its upper and lower parts respectively.

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