UA71556U - Lining of upper conical section of hydraulic cyclone - Google Patents

Abstract

A lining of an upper conical section of a hydraulic cyclone is made of rubber or other durable material in the form of a truncated cone. In addition, the geometrical parameters of the lining of upper conical section of hydraulic cyclone are selected subject to the following relationship:H/(D+ D)= (7.85-8.41) • 10,(1)δ= k • D- H/400, (2)where h- height of the lining of upper conical section of hydraulic cyclone, mm;D- upper diameter of inner lining of the upper surface of conical section of hydraulic cyclone, mm;D·- bottom diameter of the inner lining of upper surface of conical section of hydraulic cyclone, mm;δ– wall thickness of the lining of upper conical section of hydraulic cyclone, mm;Η – Shore hardness of rubber or other durable material of lining of upper conical section of hydraulic cyclone;k - coefficient of proportionality, k = (7.1 – 12.1) • 10.

Description

A useful model belongs to the field of mineral enrichment, in particular to hydrocyclones, in which the body sections are equipped with wear-resistant linings, and can be used in mining, metallurgy, chemical, pulp and paper, construction and other industries for the separation of solid phase particles in a liquid stream, revolving.

It is known that a hydrocyclone is a device of continuous action, which is used in a technological chain, for example, mining and beneficiation production, and is intended for size separation of materials suspended in a liquid medium - pulp or suspension (further pulp).

Structurally, the hydrocyclone includes a body consisting of an upper, usually cylindrical, inlet section with a tangential feed nozzle, which is also called the inlet head, a cover and several conical sections that taper downwards, a drain nozzle installed along the axis of the cover, and a sand nozzle. attached to the lower conical section of the hydrocyclone body.

The operation of the hydrocyclone is based on the action of centrifugal forces on the solid particles suspended in the pulp, which continuously moves along a spiral inside, mostly sectional, the housing, which tapers downwards.

Under the action of centrifugal forces, solid particles of a larger (heavy) fraction are thrown to the periphery, lose speed due to frictional forces, fall down the wall of the casing and are removed from the hydrocyclone through the sand nozzle.

At the same time, small solid particles of the fine (light) fraction, suspended in the liquid medium - the clarified pulp along the axis of the cyclone, where a zone of reduced pressure is formed, are removed from the hydrocyclone by an upward flow through the drain pipe located in its cover.

To protect the constituent parts of the hydrocyclone from abrasive wear, their walls in contact with the pulp are covered with replaceable wear-resistant elements - linings made of wear-resistant materials, among which rubber is the most common.

In the upper conical section of the hydrocyclone, intensive separation of heavy and light particles, which are in the pulp, begins.

Due to the fact that in this part of the hydrocyclone there is a vortex flow of the pulp, the upper conical section of the hydrocyclone interacts with solid materials suspended in the pulp and undergoes

From intense abrasive wear. To protect the upper conical section of the hydrocyclone, it is protected by a replaceable lining made of wear-resistant material, such as rubber.

The lining of the upper conical section of the hydrocyclone is known from the state of the art, made of rubber or other wear-resistant material in the form of a cone ("Hydrocyclone" OSHA43832 (I) (Borovikov

A.O. and others) B04С5/00, VOZS5/00, 25.08.2009, the closest analog is a prototype) (11.

The disadvantage of the well-known lining of the upper conical section of the hydrocyclone is the imperfection of the geometric parameters, in particular the ratio of the height of the lining and its upper and lower diameters of the inner surface.

This is caused by the fact that the geometric relations of the lining of the upper conical section of the hydrocyclone are defined in |1| intuitively and is not the optimal value for this hydrocyclone.

To ensure optimal technological performance and ensure reliability, the lining of the upper conical section of the hydrocyclone must be made taking into account certain geometric ratios.

A decrease in the height of the lining of the upper conical section of the hydrocyclone relative to the diameter leads to a deterioration of the technological indicators of the hydrocyclone, and an increase in the height leads to an increase in mass, an increase in the cost of materials, and also to a deterioration of the technological indicators.

A decrease in the thickness of the lining wall of the upper conical section of the hydrocyclone causes a decrease in its service life and reliability, and an increase in the thickness of the lining wall of the upper section of the hydrocyclone leads to an increase in the mass and a decrease in the volume of the lining of the upper conical section of the hydrocyclone.

The problem to be solved by the useful model is the improvement of the lining of the upper conical section of the hydrocyclone by optimizing its geometrical ratios to achieve the specified design technological indicators of the hydrocyclone.

The technical result, which is achieved by solving the given task and using the improved lining of the upper conical section of the hydrocyclone, consists in increasing the reliability of operation and increasing the technological indicators of the hydrocyclone.

The task is solved, and the technical result is achieved by the fact that in the lining of the upper conical section of the hydrocyclone, which is made of rubber or other wear-resistant material in the form of a truncated cone, according to a useful model, the geometric parameters of the lining of the upper conical section of the hydrocyclone are selected subject to the following ratio :

Nak/(Oivk -- Yugvk r- (7.85-8.41) , 107, (1)

Ovk - K Yugchvk - NZg/400, (2) where: Pvk - height of the lining of the upper conical section of the hydrocyclone, mm;

Otvk - the upper diameter of the inner surface of the lining of the upper conical section of the hydrocyclone,

MM;

Yugvk-- the lower diameter of the inner surface of the liner of the upper conical section of the hydrocyclone,

MM;

Ovk - THICKNESS of the lining wall of the upper conical section of the hydrocyclone, mm;

H - hardness of rubber or other wear-resistant material of the lining of the upper conical section of the hydrocyclone according to Shore;

K - proportionality factor, K - (7.1 - 12.1) 2 105,

Due to the optimization of the geometric parameters of the lining of the upper conical section of the hydrocyclone, the specified design technological indicators of the hydrocyclone are ensured. This is explained by the fact that with the optimal ratio of geometric parameters, the maximum effect of separation of the material to be classified in the hydrocyclone is achieved.

In order to achieve greater convenience when installing the lining in the hydrocyclone body and increase the density of the connection, there are triangular protrusions on the outer side of the flange.

Further, the improved lining of the upper conical section of the hydrocyclone is explained by an example of its implementation with reference to the attached drawings.

In Fig. 1 shows the lining of the upper conical section of the hydrocyclone, general view.

In Fig. 2 shows the lining flange of the upper conical section of the hydrocyclone with a triangular protrusion.

In Fig. C shows a hydrocyclone equipped with a lining of the upper conical section of the hydrocyclone, general view.

Lining 1 of the upper conical section of the claimed hydrocyclone is made (Fig. 1) of rubber or other wear-resistant material in the form of a truncated cone.

The peculiarity of lining 1 is that the geometric parameters of the upper conical section

From the hydrocyclone, they are selected under the condition that the following ratio is fulfilled:

Nak/(Oyivk -- Yugvk r- (7.85-8.41) , 102 (1)

Ovk - K Yugchvk - NZg/400, (2) where: Pvk - height of the lining of the upper conical section of the hydrocyclone, mm;

Otvk - the upper diameter of the inner surface of the lining of the upper conical section of the hydrocyclone,

MM;

Yugvk-- the lower diameter of the inner surface of the liner of the upper conical section of the hydrocyclone,

MM;

Ovk - THICKNESS of the lining wall of the upper conical section of the hydrocyclone, mm;

H - hardness of rubber or other wear-resistant material of the lining of the upper conical section of the hydrocyclone according to Shore;

K - proportionality factor, K - (7.1 - 12.1) 2 105,

Due to the optimization of the geometric ratios of the lining (1), (2), the best possible achievement of the specified design technological indicators of the hydrocyclone, its reliability and durability is ensured.

A decrease in the geometric ratios of the lining 1 compared to the optimal (1), (2) leads to a deterioration of technological indicators, a decrease in service life and reliability, and an increase in the geometric ratios of the lining 1 compared to the optimal (1), (2) leads to an increase in its mass and also deteriorates the technological indicators of the hydrocyclone, increases the consumption of lining material.

To achieve greater convenience when installing the lining 1 and increasing the density of the connection, there are triangular protrusions 2 on the outer side of the flange (Fig. 2).

Lining 1 (Fig. 1, 2) is designed to protect the inner surface of the upper conical section of the hydrocyclone body 4 (Fig. 3) from abrasive wear.

The hydrocyclone (Fig. 3) includes an interconnected body 4, consisting of an upper, usually cylindrical, inlet section 5 with a tangential feed pipe b, which is also called an inlet head, a cover C, a cylindrical section 7 and several, for example two, which taper downwards, the upper and lower conical sections 8, 9, as well as the drain nozzle 10, installed along the axis of the cover 3, the sand nozzle 11, attached to the lower conical section 9 of the body 4, and the sprinkler 12, attached to the sand nozzle 11 of the hydrocyclone, designed 60 to prevent splashing.

The hydrocyclone also includes the lining 17 of the cover C, the lining 13 of the inlet section 5 of the body 4, made with a tangential supply nozzle 14 and the channel 15, the lining 16 of the cylindrical section 7 of the body 4, the lining 1 of the upper conical section 8 of the body 4, the lining 18 of the lower conical section 9 of the body 4, the lining 19 of the drain nozzle 10, the lining 20 of the sand nozzle 11 and the lining 21 of the fire extinguisher 12 splash.

Lining 1 of the upper conical section 8 in the hydrocyclone works as follows.

The pulp enters under pressure into the channel 15 (Fig. 3) of the tangential feeding nozzle 14 of the liner 13 of the inlet section 5 of the body 4 of the hydrocyclone.

When the pulp flows through the channel 15 of the tangential feed pipe 14 of the lining 13 of the inlet section 5 of the body 4 of the hydrocyclone, the rectilinear movement of the pulp is transformed into a curvilinear and swirling one directly under the lining 17 of the cover 3.

During further movement, the pulp carries out a vortex movement along a spiral inside sections 5, 7, 8, 9 of the body 4 of the hydrocyclone.

Under the action of centrifugal forces, solid particles of a larger (heavy) fraction suspended in the pulp, continuously moving along a spiral inside the body 4 of the hydrocyclone, which narrows downwards, are thrown to the periphery (to the walls of the liners 13, 16, 1, 18), according to due to the forces of friction, they lose speed, fall down and are removed from the hydrocyclone through the sand nozzle 11 and the sprinkler 12, which prevents splashing.

And small solid particles of the fine (light) fraction, suspended in the liquid medium - clarified pulp, along the axis of the hydrocyclone, where a zone of reduced pressure is formed, are removed from the hydrocyclone with an upward flow through the drain nozzle 10, located in its cover 3.

In connection with the fact that the geometric parameters of the liner 1 of the upper conical section 8 of the hydrocyclone are selected under the condition that the ratio (1), (2) is fulfilled, the thickness of the liner 1 is optimized, the best possible combination of its material capacity and strength is ensured while providing the necessary internal volume of the upper conical section 8 of the body 4 of the hydrocyclone to ensure the specified design technological indicators of the hydrocyclone.

Due to this, the optimal service life is achieved and the reliability of the operation of the mentioned liner and the hydrocyclone as a whole is increased.

The given information indicates the possibility of industrial suitability of a useful model, which

Zo can find wide application in the mining, metallurgical, chemical, pulp and paper, construction and other branches of industry for size separation of materials suspended in a liquid medium - pulp in hydrocyclones.

List of designations 1) liner of the upper conical section of the hydrocyclone 2) triangular protrusion on the outer side of the flange of the liner of the upper conical section of the hydrocyclone 3) lid of the hydrocyclone 4) body of the hydrocyclone 5) inlet section of the hydrocyclone body 6) tangential feed nozzle of the inlet section of the hydrocyclone body 7) cylindrical section of the body hydrocyclone 8) upper conical section of the hydrocyclone body 9) lower conical section of the hydrocyclone body 10) drain nozzle 11) sand nozzle 12) splash extinguisher 13) liner of the inlet section of the hydrocyclone 14) tangential feed nozzle of the liner of the inlet section of the hydrocyclone 15) channel of the tangential feed nozzle of the inlet liner sections of the hydrocyclone 16) lining of the cylindrical section of the hydrocyclone 17) lining of the lid of the inlet section of the hydrocyclone 18) lining of the lower conical section of the hydrocyclone 19) lining of the drain nozzle 20) lining of the sand nozzle 21) lining of the splash extinguisher.

Claims (2)

USEFUL MODEL FORMULA 1. The lining of the upper conical section of the hydrocyclone, made of rubber or other wear-resistant material in the form of a truncated cone, which is distinguished by the fact that the geometric parameters of the lining of the upper conical section of the hydrocyclone are selected subject to the following ratio: Ж (7.85-8.41). 102 (1) Ovk - K Yugchvk - NZg/400, (2) where: Pvk - height of the lining of the upper conical section of the hydrocyclone, mm; O'vk - upper diameter of the inner surface of the lining of the upper conical section of the hydrocyclone, MM; ЮОгвк-- the lower diameter of the inner surface of the lining of the upper conical section of the hydrocyclone, MM; Овк - THICKNESS of the lining of the upper conical section of the hydrocyclone, mm; H - hardness of rubber or other wear-resistant material of the lining of the upper conical section of the hydrocyclone according to Shore; K - proportionality factor, K - (7.1 - 12.1) 2 105, 2. Lining of the upper conical section of the hydrocyclone according to claim 1, which differs in that the flanges of the lining have triangular protrusions located on the outer side of the flange. x : Fig. 1 and On she I o i r Z zh sa I to vt h my x 2 There is it odu U U to z y Fig. 2