CZ298183B6 - Fluid-type shaking table - Google Patents

Abstract

The present invention relates to a fluid-type shaking table consisting of a supporting housing (3) accommodating a perforated separation surface (4) having the form of a rectangular triangle, and two rotary surface vibrators (10) with counterweight to ensure a controlled vibration of both the supporting housing and separation surface (4), wherein the direction of the driving force of the rotary surface vibrators (10) forms with a plane of the separation surface (4) an angle within the range of 10 to 30 degrees and an exhaustion cover (5) along with a suction branch intended for connecting an exhauster, fitted with control means for controlling amount of air passing through the separation surface, cover the separation surface (4) from above. The supporting housing (3) with the separation surface (4) is preferably located on a longitudinal frame (7) situated on a transverse frame (8). Both said transverse frame (8) and longitudinal frame (7) are joined with each another by means of a first radial bearing (16) with one degree of freedom and an adjusting screw (13) serving for adjusting the inclination angle of the longitudinal frame (7) relative to a horizontal plane. Said transverse frame (8) is disposed on a two-part supporting base plate (1) and the frames (8, 7) are connected by means of a second radial bearing (18) with one degree of freedom and an adjusting screw (14) serving for adjusting the inclination angle of the transversal frame (8) relative to the horizontal plane.

Description

Fluid vibrating weir

Technical field

The invention relates to a fluidized vibratory weir.

BACKGROUND OF THE INVENTION

Fluid vibrating sluice is used for separation of dry loose mixtures containing particles of different density. The separating surface, mostly rectangular in shape, is excited by regular oscillations and at the same time the profile is forged by a stream of air. The separated mixture enters the perforated separation surface at point A, as shown in Figure 3, and proceeds in the direction of B under the influence of oscillations 15. The low density particles are lightened by the air flow, thus causing a limited oscillation of the separation surface. These two factors change the trajectory of these particles and drop out of the surface gradually in directions C, D. E, F. This phenomenon sc is advantageously used for example in the separation of crushed cable crumb, granulate from tires, separation of rare minerals from tailings, granulate cleaning PE1 packaging etc.

Currently, there are two ways of solving fluid vibration weirs. The first one uses a crank mechanism with a connecting rod to excite the vibrations of the separation surface, the second one uses an electric linear motor.

The crank mechanism has a robust construction and allows application even on large separation surfaces of the order of m “units.

The disadvantage is that the oscillation path amplitude of the separation surface cannot be changed and the machine structure must be robust with respect to the individual oscillating parts.

The floating motor with a linear motor uses a linear motor, which is positioned between the bearing structure of the separation surface and the oscillating counterpart, to excite the separation surface vibrations. that both parts form a dual-mass resonant system. The two oscillating masses are connected to each other by four sets of leaf springs, which by their stiffness determine the oscillation frequency. The linear motor is powered by a special 35 frequency converter, which monitors through the sensors the instantaneous values of the amplitude of the oscillation path of the separation surface and its frequency,

The advantage is that it is possible to continuously vary the amplitude of the oscillation path of the separating surface and the whole system operates in resonance, thus working with less power consumption.

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The disadvantage is that the manufacture and installation of this equipment requires qualified personnel and the electronic part containing the drive and sensors is specific to this dedicated application only.

SUMMARY OF THE INVENTION

These drawbacks are eliminated by a fluid vibrating sluice consisting of a support box in which a perforated rectangular triangular separation surface is located, which according to the invention consists in connecting the box to two rotary contact vibrators with unbalance to provide controlled oscillation of the support box and thereby the direction of the excitation force of the rotary vibrators makes an angle of 10 to 30 ° with the plane of the separation surface, the support box and the separation surface are covered from above by a suction hood and suction port for connecting the hood types of separated mixture.

- I C'Z 298183 B6

The support box c with the separation surface is preferably located on a longitudinal frame which is located on the cross frame, the cross frame and the longitudinal frame being connected by a first radial bearing with one degree of freedom and an adjusting screw to adjust the angle of inclination of the longitudinal frame relative to the horizontal. The transverse frame is located on a two-piece base support frame whose upper part is cushioned by damping elements relative to the lower part. The upper part and the cross frame are connected by a second radial bearing with one degree of freedom and an adjusting screw to adjust the angle of inclination of the cross frame to the horizontal plane. The axis of the second radial bearing is parallel to the longer retractable triangular separation surface and the axis of the first bearing is parallel to the shorter retractable triangular separation surface and the rotary contact vibrators are rigidly connected to the support box brace.

The support box reinforcement has a U-shaped profile in which the box is housed.

The separation surface is equipped with adjustable flaps and outlet nozzles.

Two vibrating contact vibrators with unbalance weights are used to excite the vibrations of the separation surface.

By varying the unbalance, the oscillation path amplitude of the separation surface can be varied.

The separated mixture containing particles of different specific gravity is separated into individual components on the separation surface according to the specific gravity of the individual particles, and these exits from the separation surface through outlet nozzles located along its longer branch.

The advantage is a simple design compared to previous systems, high reliability and minimal maintenance, low purchase costs and the possibility to change the separation surface frequency within certain limits using standard frequency converters.

Unlike the linear motor weir, it is necessary to change the position of the unbalances when changing the amplitude of the oscillation path.

BRIEF DESCRIPTION OF THE DRAWINGS

Giant. 1 a. B shows a fluidized vibrating sluice in front and side view.

Giant. 2 shows a fluid vibration sluice in axononietric view.

Giant. 3 shows the separation of the various kinds of components according to their specific gravity.

Examples

Example 1

4? The fluidized vibratory sluice consists of a two-piece base support frame 10 which ensures a stable position of the machine relative to the rigid support. Its upper part 1a is connected to the lower part 1b via damping elements 2, which prevent the transmission of machine vibrations to the lower part Ib of the base frame 1 and hence to the rigid support. The upper part 1a of the foundation wound 7 is firmly connected to the fluidized bed system itself. The fluidized vibratory sluice is formed by a support box 3 in which a rectangular-shaped separation surface 50 4 is located. The housing 3 and the separating surface 4 are covered from above by a suction hood 5 with a suction neck 6 which allows the connection of a hood. The hood is provided with a regulation of the air flow through the separating surface 4. The housing 3 is mounted on a longitudinal frame 7 The support box 3 moves about an axis 15

Rotation parallel to the base of the triangular separation surface 4, formed by a bearing 16 connecting the longitudinal frame 7 to the transverse frame 8 at an angle of 0 to 12 ° to the horizontal. A transverse frame 8 is arranged below the longitudinal frame 7, which makes it possible to vary the angle of inclination of the support box 3 in the range of 0 to 12 ° with respect to the horizontal plane about the axis 17 passing through the bearing 18. The axis 17 is also parallel to the longer retractable triangular separation surface 4, respectively with the longitudinal direction of the separated mixture in the shift indicated by the arrow 20. The transverse direction is perpendicular to it.

The controlled oscillation of the support box 3 and hence of the separation surface 4 is driven by two rotary contact vibrators 10 mounted on a massive U-shaped reinforcement 19, in which the support box 3 is fixed. angle 25 °. This ensures the separation of the separated mixture over the separation surface 4. The rotary vibrators' 10 are equipped with adjustable unbalances which allow to adjust the oscillation path amplitude of the support box 3 in the range of 0.5 to 3 mm and by varying the amplitude it can control the separation efficiency and speed of the separated mixture The separated mixture enters the separation surface 4 15 via a hopper 9. Adjustable flaps 11 serve to separate the individual components of the separated mixture, which direct the discharge of the individual components into the outlet nozzles 12.

The inclination angle of the longitudinal frame 7 is adjusted by the adjusting screw 13 and the inclination angle of the transverse frame 8 is adjusted by the adjusting screw 14.

Example of application of fluid vibration weir

The fluidized vibrating sluice is intended for the separation of dry bulk mixtures containing approximately the same particles of different density. An example of such a mixture is an electrical insulated copper conductor, which is crushed so that most of the insulating sheath is separated from the copper conductor, the mixture thus prepared is gradually metered onto the separation surface of the fluidized vibratory sluice. The area is divided into individual components according to their specific weight. In the case of said copper conductor granulate, at the point of intersection of the triangular separating surface vi, the lightest particles, i.e. the granules of the insulating sheath, will be disengaged, while the heaviest particles, i.e. the copper granules, will advance after the transition. In this way, the copper granules can be separated from the insulation. The purity of the copper product is about 99%, while in the lightest product, i.e. the granulate of the insulation, the content of metallic copper parts is about 2%.

The fluidized bed vibratory power is in the order of 100 kg / h when separating the various mixtures.

Industrial applicability

The fluidized vibratory sluice according to the invention can be used to divide particles of materials of different weight.

Claims (4)

PATENT CLAIMS What is claimed is: 1. A fluidized vibratory sluice comprising a carrier housing in which a perforated rectangular-triangular separating surface is located, characterized in that: wherein the support box (3) is connected to two rotary contact vibrators (10) with unbalance to provide controlled oscillation of the support box (3) and hence the separation surface (4), wherein the direction of excitation force of the rotary contact vibrators (10) is (4) an angle in the range of 10 to 30 °. the support box (3) and the separation surface (4) are covered from above by a suction hood (5) and a suction nozzle (6) to connect a hood with the possibility of regulating the amount of air passing through the separation surface according to the type of mixture separated. Fluid vibrating sluice according to claim 1, characterized in that the support box (3) with the separation surface (4) is placed on a longitudinal frame (7), which is located on the cross frame (8), the cross frame (8). ) and the longitudinal frame (7) are connected by a first radial bearing (16) with one degree of freedom and an adjusting screw (13) to adjust the angle of inclination of the longitudinal frame (7) to the horizontal plane, the cross frame (8) is located on a two-piece foundation frame (I). the upper part (1a) being cushioned by the damping elements (2) relative to the lower part (Ib), the upper part (1a) and the cross frame (8) being connected by a second radial bearing (18) with one degree of freedom and an adjusting screw (14) adjusting the inclination angle of the transverse frame (8) with respect to the horizontal plane, wherein the axis of the second radial bearing (18) is parallel to the longer retractable triangular separation surface (4) and the axis of the first bearing (16) is parallel to the shorter retractable triangular separation surface (4); the rotary contact vibrators (10) are rigidly connected to the reinforcement (19) of the support box (3). Fluid vibrating sluice according to Claim 2, characterized in that it is a screen. The reinforcement (19) has a U-shaped profile in which the housing (3) is mounted. Fluid vibrating sluice according to Claims 1 to 3, characterized in that the separation surface (4) is provided with adjustable flaps (11) and outlet nozzles (12),