RU2592093C1 - Device for hydraulic transport of loose materials - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to hydraulic transport of loose materials, sludge, particularly for pumping of liquids with considerable content of suspension, having abrasive capacity. Device for hydraulic transport of loose materials comprises loading device (1) and unloading, housing (3), inside which there is vertical drive shaft (4) with cone nozzle (5), nozzle (6) output of cleaned phase and branch pipe (8) for outlet of condensed phases. Branch pipe (6) is connected with rotary pump (7), and branch pipe (8) is connected with mixing chamber ((9). On surface of nozzle (5) there are holes (10) arranged in circular rows. Size of holes (10) decreases from lower row to upper row. Mixing chamber (9) is made in form of hollow toroid in upper part of which there is a window (11). Unloading device represents a branch pipe arranged at an acute angle to plane of mixing chamber (10).

EFFECT: invention is aimed at creation of simple and reliable device for hydraulic transportation, which provides low wear of working elements in operation.

1 cl, 3 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 housing, 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, B.I. No. 37, 10/7/08].

The disadvantages of this device include high pressure losses and low efficiency due to the use of a water-jet elevator as a mixing chamber.

Closest to the proposed is a device for transporting suspensions [US Pat. RF 2212566, 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 housing in the internal volume of which a vertical drive shaft with a conical nozzle mounted on it, a clarified phase outlet pipe in communication with a centrifugal pump and a liquid supply pipe connected to the mixing chamber (water-jet elevator).

The disadvantages of this device include high pressure losses and low efficiency due to the use of a water-jet elevator as a mixing chamber.

The objective of the invention is the creation of a simple and reliable device for the hydrotransport of bulk materials and sludge, 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 internal volume of which there is a vertical drive shaft with a conical nozzle mounted on it, a clarified phase outlet pipe in communication with a centrifugal pump, and a condensed discharge pipe phases connected to the mixing chamber, holes arranged in annular rows are made on the surface of the conical nozzle, and the size of the holes decreases from the bottom of the upper row, the mixing chamber is in the form of a hollow torus, on top of which annular window and discharge device is a pipe mounted at an acute angle to the plane of the mixing chamber.

In FIG. 1 shows a diagram of a device for the hydrotransport of bulk materials.

In FIG. 2 shows view A.

In FIG. 3 shows view B.

A device for the hydrotransport of bulk materials contains a loading device 1 and an unloading device 2, a housing 3, in the internal volume of which there is a vertical drive shaft 4 with a conical nozzle 5 mounted on it, a clarified phase outlet pipe 6 communicating with a centrifugal pump 7, and a liquid supply pipe 8 connected to the mixing chamber 9. On the surface of the conical nozzle, openings 10 are provided arranged in circular rows, the size of the openings being reduced from the lower to the upper row. The mixing chamber is made in the form of a hollow torus, in the upper part of which an annular window 11 is placed for the passage of the condensed phase. The drive shaft with a conical nozzle and a centrifugal pump is carried out from the electric motor 12.

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

Bulk materials to be transported together with the transporting liquid are fed into the internal volume of the housing 3 to the rotating conical nozzle 5. When the nozzle rotates, the transported material is separated by centrifugal forces into the clarified phase (liquid with small particles that do not pose a threat to the pump) passing through the openings 10 in the nozzle, and condensed (large solid particles with a small liquid content), which rises along its surface and enters through the annular window 11 into the mixing chamber 10. The clarified phase flows down to the bottom of the casing and through the outlet pipe 6 it enters the centrifugal pump 7, where it accelerates and through the liquid supply pipe 8 flows tangentially into the mixing chamber 10. Here it mixes with the condensed phase. Then the transported material from the discharge device 2 enters the pipeline. 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 internal volume of which there is a vertical drive shaft with a conical nozzle mounted 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 on the surface of the conical nozzle holes are made arranged in circular rows, and the size of the holes decreases from the lower row to the upper, cm respect to the camera is in the form of a hollow torus, on top of which annular window and discharge device is a pipe mounted at an acute angle to the plane of the mixing chamber.

Images