JPS5823145B2 - Classifier - Google Patents

Description

[Detailed description of the invention] The present invention relates to a classification device (classification device).

It particularly relates to a device for classifying fluid mixtures containing a plurality of components.

The components may be three-phase, ie, gas, liquid, and solid.

The mixture is thus liquid-gas, liquid-solid, gas-solid, liquid-
liquid or any other similar mixture of fluids.

The present invention provides a classification device that is composed of a container having a plurality of sedimentation compartments and is intended to prevent turbulence as much as possible during classification of fluid mixtures and perform good classification. Its features are as described in the claims.

Next, the apparatus of the present invention will be further explained in detail.

The device of the present invention has a truncated head rotatable around a vertical axis of rotation, and has a plurality of precipitation compartments arranged vertically at intervals for collecting mixture components having the same physical properties. A container having a conical shape with its small-diameter inlet end facing downward; a storage chamber surrounding the outer periphery of the lower inlet end of the container and containing a fluid mixture therein; A baffle is provided below each inlet of the chamber and extends in a radial direction opposite to each upwardly expanding side wall of the container and is fixed to the rotating shaft, and when the rotating shaft rotates, Rotation of each baffle and the container is caused to cause the fluid mixture within the reservoir to be introduced into the container from the inlet end and to apply a centrifugal force to the fluid mixture within the container causing it to move up along the side walls thereof.

A mixture fluid is supplied to each stage of compartments to effect precipitation of mixture particle components of substantially the same physical properties in each compartment depending on the physical properties of the mixture components.

Physical properties include size, shape, specific gravity, density, and other suitable physical properties.

Sedimentation compartment. are formed in longitudinally spaced banks, each bank including a plurality of circumferentially spaced compartments at different heights about the axis of rotation of the container. .

The container thus has upwardly widening side walls so that the mixture fluid at each valve.

When a centrifugal force is applied to the tube, the centrifugal force can be caused to flow as laminarly as possible along the side wall into each of the compartments on the upper periphery of the tube.

The settling compartment may protrude from the vessel at various different heights.

As the height increases, the ends of the settling compartments may protrude more radially.

The settling chamber (consisting of one or more circumferential chambers) is provided with a closable orifice through which the precipitated and classified components are discharged.

The orifice includes a valve arrangement adapted to control the discharge of components from the compartment.

The valve is made responsive to the volume of the settling compartment.

These valves are actuated by electrical, mechanical or hydraulic devices in response to sensors in each or several of the settling compartments.

These may be responsive to alternating passages of time or may be manually actuated.

The valve is conveniently a butterfly or sluice type valve, but may also be any other suitable valve depending on the components to be separated.

The settling chamber has a progressively narrower width from the inlet at its inner end to the closable orifice at its outer end.

configured to focus on

With this configuration, when the precipitated components are discharged, it is possible to minimize interference with the water supply to the remaining part of the precipitation compartment, and to minimize interference with the classification and precipitation operations. This has the effect of allowing continuous operation.

Furthermore, the settling chamber is constructed so that the height from the inlet side of the mixed fluid to be treated is greater than the depth from the inlet to the orifice.

With this configuration, turbulence of the mixed fluid in the settling compartment is minimized as much as possible, and particles that have reached the deep part of the settling compartment are removed from the inner end. Since the precipitate can be concentrated in a good and stable manner without being affected by any vortices or small filtration existing at or near the inlet of the orifice, the normally closed valve of the orifice can be opened in a timely manner to remove the concentrated precipitate particles. It has the effect of being able to concentrate and efficiently separate and collect the substances without dispersing them.

Furthermore, by operating the valve to discharge the precipitate, it is possible to substantially maintain the height-to-depth ratio of the precipitating compartment, which prevents turbulence and the like.

A collection device may also be provided to separately collect the precipitated components discharged from the precipitate compartment.

An example of the present invention will be described in detail below with reference to the accompanying drawings.

In the drawings, 10 generally indicates a classification device consisting of a truncated conical container 12 with the narrow end as the bottom of the container, which is made to be rotated and driven around a vertical axis 13. .

The container 12 has an inlet end 14 and a sidewall 16 extending beside the inlet end.

A plurality of settling chambers 30 are provided at different heights in axially spaced banks 83, 84, 85.

a frame 22 with a shaft 20 supported by suitable bearings 17;
A belt drive pulley 24 is rotatably installed thereon and connected to a drive motor 26.

The container 12 is connected to the drive shaft 20 by a radial arm 28.

Further, a radially extending baffle 29 is fixed to the shaft 20 and side wall 16 of the container 12, corresponding to the inlet 32 of each stage of the precipitation compartment 30, and facing the container side wall 10 below each stage.

As can be seen in FIGS. 1 and 2, the settling chambers 30 are provided in longitudinally spaced banks 83, 84, 85 at different heights; It also has an orifice 31 that can be closed.

A sensor 33 is provided within settling compartment 30 and is operatively connected to valve 32 within orifice 31 .

Further, the settling chamber 30 gradually becomes narrower and more concentrated from the inlet 82 at its inner end toward the closable orifice 31 at its outer end, and the width from the inlet 82 is lower than the height 80 on the inlet 82 side. It is configured to increase the depth 81 to the orifice 31.

A fixed outer casing 34 is provided to surround the container 12.

A baffle plate 36 is provided in the outer casing 34 facing the flow of the discharged and classified components.

A seal 3 surrounds the shaft 20 and the inlet end 14 of the container 12.
A fixed reservoir 15 having 7 is further provided.

An internal restraining wall 50 may also be provided as shown in dotted lines in the drawings to assist in introducing the mixture into the settling compartment.

When the restraining wall 50 is provided, the sediment layer deposited on the side wall 16 due to centrifugal force becomes extremely thin, and as a result, it helps to bring about a good separation and classification effect of the sediment.

In use, a mixture consisting of, for example, sand grains suspended in water is provided in the reservoir 15 and then fed into the inlet end 14 of the bowl as the rotating shaft 20 rotates.

The agitation of the buckle 29 imparts a centrifugal force to the mixture fluid supplied in the container 12, causing it to be displaced upwardly along the side wall 16 of the container 12 in the direction of arrow 38 upon rotation of the bowl. Ru.

The heavier or larger size fraction of sand is
The lighter or smaller fractions are precipitated in the lower settling compartments and the substantially solids-free water overflows at 40.

When the predetermined volume of sand has settled into the compartment, this is detected by sensor 33 and valve 32 is opened.

Due to centrifugal force, the respective fractions of sand are discharged at different heights onto a fixed baffle plate 36 controlled by suitable devices (not shown).

In use, the device substantially separated sand grains smaller than Mesh 325 from the water suspension.

By varying the width of the settling compartments, their height, the number of compartments in a longitudinal bank, or the speed of rotation, the number and quality of the fractions can be varied.

In operation of the apparatus described above, the inlet 82 of each settling compartment 29
The side wall 16 of the container is placed below the side wall 16 of the container without directly facing it.
Since the baffle 29 is provided opposite to the baffle 29, the rotation of the baffle 29 does not cause the mixture fluid to flow directly into the inlet 82 of the compartment 29, but rather allows it to move upward along the side wall 16 of the compartment 29, thereby forming a layer as much as possible. Furthermore, each compartment 29 has a depth 81 from the inlet 82 to the orifice 31 that is larger than the height 80 on the inlet 82 side, so that turbulence within each compartment 29 is reduced. The flow can be made as smooth as possible, and the particles can be allowed to settle stably without being affected by the vortices or small turbulence generated near the inlet 82, and the particles once settled can be disturbed. This has the effect of stably maintaining the precipitated state without causing any problems.

Examples of embodiments of the present invention are as follows.

(1) Each precipitation compartment consists of a plurality of circumferentially arranged chambers, each chamber is concentrated at one point, and a closable orifice and valve are provided at each concentrated point. An apparatus according to claim 1.

(2) The apparatus of claim 1, wherein the container has internal fins for stirring the mixture within the container.

[Brief explanation of the drawing]

FIG. 1 is a diagrammatic cutaway side view of one embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line ■--■ in FIG. 10... Classifying device, 12... Container, 1
3... Vertical axis, 14... Inlet end, 1
6... Side wall, 30... Sedimentation compartment, 8
0...Height on the inlet side of the precipitation compartment, 81...
...Depth from the entrance of the settling compartment to the orifice, 2
9...Baffle, 82...Inlet, 83
．． 84.85... Bank.

Claims (1)

[Claims] 1 a frusto-conical container rotatably mounted for rotation around an axis of rotation with the narrow end as the bottom of the container; , for the precipitation of those components having the same precipitation characteristics extending outwardly and concentrating in progressively narrower widths from the inlet at the inner end of the precipitation compartment towards the obstructable orifice at the outer end of the precipitation compartment; a plurality of settling compartments arranged in series at axial intervals on the side wall of the vessel; a valve for normally closing the orifices and automatically opening the orifices for a predetermined period at a predetermined period; a reservoir surrounding the inlet end of the vessel and containing the fluid mixture; and corresponding to the inlet of each settling compartment, fixed to the rotating shaft and radially disposed below the respective settling compartment; a baffle for applying a centrifugal force to the separated mixture; and a fixed outer casing provided around the container for collecting the precipitated components discharged from the precipitating compartment;
and the sedimentation chamber is configured such that the depth from the inlet to the orifice is greater than the height of the inlet side of the sedimentation chamber in the flow direction. classification equipment for physically separable components.