RU237236U1 - Hydrodynamic cradle-type slurry pipeline - Google Patents

Abstract

The utility model relates to mineral processing and can be used for washing gold-bearing sands containing clay pellets at placer gold deposits, as well as in other industries. A hydrodynamic slurry pipeline comprising a tubular body with swirlers arranged periodically along the pipe to form a repeating swirling flow in the liquid and soften sand-clay pellets in the pulp, wherein the swirlers are designed as a pipe with working guide plates uniformly welded to its inner surface with cutting edges at the ends of the pulp flow outlet and at the inlet of the stream, made with streamlined shapes. The technical result consists in increasing the efficiency of softening clay pellets due to the repeating swirling of the flow during transportation. 4 fig.

Description

Field of technology

The utility model relates to mineral enrichment and can be used for washing gold-bearing sands, including clay pellets, at placer gold deposits, as well as in other industries.

State of the art

A device known is a hydraulic elevator installation with a hydraulic cradle loading and limiting device (patent RU 2573501, IPC B03B 11/00, Published: 20.01.2016 Bulletin No. 2), including a hydraulic cradle, a slurry pipeline, a water pipeline, a hydraulic monitor, a loading hopper with a limiting grate with a frontal shield and a hydraulic elevator.

The disadvantage of the known device is the low efficiency of softening clay pellets.

A device is known in the method for extracting gold during hydromechanized development of clay placers (patent RU 2259886, IPC B03B 5/00, Published: 10.09.2005 Bulletin No. 25), including washing, disintegration, gravitational enrichment in deep-filling sluices, screening, gravitational enrichment in shallow-filling sluices, rinsing of concentrate from collecting surfaces and finishing of concentrate, wherein after washing and disintegration on a hydraulic cradle, softening of clay pellets is performed during the process of transporting pulp in a pulp pipeline by periodic impact of moving clay pellets on metal pins installed in the lower part of the pulp pipeline.

The disadvantage of the known device is the low efficiency of softening clay pellets.

The closest in technical essence to the proposed device is the hydrodynamic pulp pipeline (patent RU 82597, IPC B03B 5/02, B22C 5/00, B65G 53/30. Published: 10.05.2009 Bulletin No. 13), which includes a housing in the form of a pipe with swirlers located periodically along the pipe to form a repeating swirling flow in the liquid and to soften the sand-clay pellets in the pulp.

The disadvantage of the closest device is the low softening of clay pellets.

Disclosure of a utility model

The technical result is an increase in the efficiency of softening of clay pellets due to repeated swirling of the flow during the transportation process.

The technical result is achieved in a hydrodynamic cradle-type pulp pipeline device, which includes a housing in the form of a pipe with swirlers periodically arranged along the pipe for forming a repeating swirling flow in the liquid and softening sand-clay pellets in the pulp, wherein the swirlers are made in the form of a pipe with working guide plates uniformly welded to its inner surface with blade edges at the ends of the pulp flow jet outlet and at the jet inlet, made with streamlined shapes.

The distinctive features are:

The swirlers are made in the form of a pipe with working guide plates uniformly welded to its inner surface with blade edges at the ends of the pulp stream outlet and at the stream inlet, made with streamlined shapes. This design increases the efficiency of softening of clay pellets due to the repeated swirling of the flow during transportation with low hydrodynamic resistance.

A comparative analysis of the features of the claimed solution with the features of the prototype and analogues indicates that the claimed solution meets the criterion of “novelty”.

Brief description of the drawings

Fig. 1 shows a frontal section and a diagram of the operation of a hydrodynamic cradle slurry pipeline, including: 1 - an element of the slurry pipeline body; 2 - a swirler of the driving medium, in the form of slurry from the cradle hopper, the first in the feed system; 3 - a channel of the slurry pipeline, the passage of sand-clay slurry, behind the previous swirler; 4 - a swirler of the driving medium, subsequent in the feed system, the elements of which, in the form of working plates, perform the function of a softener; 5 - a channel of the slurry pipeline, the passage of sand-clay slurry, behind the subsequent swirler; 6 - a working guide plate of the swirler.

Fig. 2 shows section A-A from Fig. 1 of the frontal section of the hydrodynamic cradle pulp pipeline, including: 1 - an element of the pulp pipeline body; 6 - a working guide plate of the swirler and softener; 7 - an active part of the pulp flow swirling region; 8 - a passive part of the pulp flow swirling region.

Fig. 3 shows a section B-B from Fig. 1 of the frontal section of the hydrodynamic cradle pulp pipeline, including: 6 - the working guide plate of the swirler and softener; 9 - the streamlined counter edge of the working guide plate of the softener in the radial direction of the pulp flow.

Fig. 4 shows a section B-B from Fig. 2 of the section of the hydrodynamic cradle slurry pipeline, including: 6 - the working guide plate of the swirler and softener; 10 - the streamlined counter edge of the working guide plate of the softener in the perpendicular to the radial direction of the pulp flow; 11 - the blade-like descending edge of the working guide plate of the whirler in the radial direction of the pulp flow.

Implementation of a utility model

The assembly of the hydrodynamic cradle-type slurry pipeline is performed using prefabricated structural components. The slurry pipeline body element 1 is cut from a pipe of the appropriate diameter in the form of blanks of the length specified by the design. The swirler 2 of the driving medium is made from a pipe similar to the slurry pipeline body 1. The working guide plates 6 of the swirler are welded to the inside of the cut pipe section. The plates 6 are preliminarily cut on a sheet metal guillotine. A streamlined counter edge 9 of the working guide plate 6 of the softener is then formed on it in the radial direction of the pulp flow, in the form of a cut of the leading edge of the plate 6 at an angle of 55 ^° . Next, the plate 6 is chamfered on a milling machine, providing a streamlined counter edge 10 of the working guide plate of the softener perpendicular to the radial direction of the pulp flow. The next step involves milling the blade-like descending edge 11 of the working guide plate 6 of the swirler in the radial direction of the pulp flow. The blank plate 6 is straightened and adjusted to the template of the inner surface of the slurry pipeline pipe to ensure a tight fit with the swirler's direction. The component parts of the slurry pipeline structure, consisting of repeating elements of the housing 1 and the swirler 2 of the driving medium, are welded into a single unit.

An example of the use of a hydrodynamic slurry pipeline system. The slurry pipeline, installed in a hydrodynamic cradle, includes a housing 1 in the form of a pipe along which swirlers 2 are periodically arranged in the form of working guide plates 6, uniformly distributed over the inner surface of the slurry pipeline pipe. Working guide plates 6 form an active portion of the slurry flow vortex region 7, which can rotate the entire flow around the axis of the slurry pipeline due to a hydrodynamic connection with the passive portion of the vortex region 8. Guide plates 6 with blade edges 11 at the ends of the pulp flow outlet and at the inlet of the stream with streamlined shapes 9 and 10 reduce hydrodynamic drag and increase the efficiency of softening clay pellets. In a rotating flow, due to centrifugal forces, heavy formations in the form of pellets will be directed toward the inner surface of the pipe. Channel 3 of the slurry pipeline, the passage of sand and clay pulp, downstream of the preceding swirler, prepares the pulp for the softening process. Repeated swirling flows are formed in the liquid by the action of swirlers 4 of the driving medium of subsequent units in the feed system. The inlet elements, in the form of plates 6, soften the clay pellets entering channel 5 of the slurry pipeline, the passage of sand and clay pulp, downstream of the subsequent swirler. Under these conditions, the processes of swirling, preparing the pellets for impact, softening, and disintegration are periodically repeated. Softening of the sand and clay pellets in the pulp is achieved by hydrodynamic disruption by guide plates during transportation to the sluice gate. Additionally, if a sand and clay pellet in the moving pulp accidentally hits the streamlined shapes 9 and 10 of guide plates 6, they are physically destroyed and disintegrated by hydrodynamic impact.

A control experimental recording of the operation of the proposed device showed an increase in the softening of pellets by 11%.

Thus, the proposed design of the hydrodynamic cradle pulp pipeline increases the efficiency of softening of clay pellets due to the repeated swirling of the flow during the transportation process.

Sources of information:

1. Patent RU 2573501, IPC B03B 11/00, Published: 01/20/2016 Bull. No. 2.

2. Patent RU 2259886, IPC B03B 5/00, Published: 09/10/2005 Bulletin. No. 25.

3. Patent RU 82597, IPC B03B 5/02, B22C 5/00, B65G 53/30. Published: 05/10/2009 Bulletin. No. 13.

Claims (1)

A hydrodynamic slurry pipeline with a hydraulic cradle, comprising a housing in the form of a pipe with swirlers periodically arranged along the pipe for the formation of a repeating swirling flow in the liquid and the softening of sand-clay pellets in the pulp, characterized in that the swirlers are made in the form of a pipe with working guide plates uniformly welded to its inner surface with blade edges at the ends of the pulp flow jet outlet and at the jet inlet, made with streamlined shapes.