CN203265047U - Novel elliptic-orbit vibrating sieve bend - Google Patents

Abstract

The utility model belongs to the field of mechanical vibration screens, and particularly relates to a novel elliptic-orbit vibrating sieve bend. The novel elliptic-orbit vibrating sieve bend is adopted by coal preparation plants and dressing plants to be used for carrying out water removal operation in advance, desliming operation, medium removal operation and graded coal slime recycling on materials, and can also be used in cooperation with a hydrocyclone, a coal slime centrifuge and a high-frequency sieve to carry out effective grading operation, water removal operation, desliming operation and medium removal operation on fine-particle materials. The novel elliptic-orbit vibrating sieve bend comprises a support, a sieve cloth portion with an arc-shaped sieve surface, and a suspension portion used for fixing the sieve cloth portion on the support in a suspension mode. The novel elliptic-orbit vibrating sieve bend further comprises a vibration assembly used for driving the sieve cloth portion to vibrate in the set direction, wherein the vibration assembly comprises a double-shaft vibration exciter, and the eccentric masses of vibration exciting blocks at the positions of two eccentric shafts on the double-shaft vibration exciter are different. The novel elliptic-orbit vibrating sieve bend can improve the separation effect of the materials, can improve the conveying effect, effectively solves the problem that the materials accumulate at the discharging end of a traditional vibrating sieve bend, and remarkably improves working efficiency.

Description

Novel elliptical orbit vibration sieve bend

Technical field

The utility model belongs to mechanical oscillation and sieves the field, be specifically related to a kind of coal preparation plant and ore dressing plant to material dewater in advance, desliming, de-mediated operation, classification coal slime reclaim, and also can be used in conjunction with the novel elliptical orbit vibration sieve bend that makes fine carry out effective classification, dehydration, desliming, de-mediated with hydrocyclone, coal slime centrifuge and high-frequency screen.

Background technology

Vibratory sieve is to rely on vibrator to make compass screen surface produce the high-frequency vibration and the machinery that sieves, divides by its movement locus can be divided into circular trace circularoscillations sieve and the straight path circularoscillations sieves.Circular trace circularoscillations sieve is divided into again eccentric vibrating screen and single-shaft vibrating screen, it mainly relies on the eccentric vibrating effect of vibration module, thereby make material on compass screen surface produce vertical its compass screen surface circular impelling phenomenon in the plane, even also this material constantly produces circle-shaped jumping, the every vibration of compass screen surface once, material is with once tossed, like this, material jumps forward with the compass screen surface vibration frequency continuously, reaches sieve material purpose; This kind vibratory sieve is because the jump height of material is advanced highly consistent with it, often cause the material gait of march excessively slow, when particularly being applied to similar coal separation ore dressing during the vibratory sieve place of arc compass screen surface used, being easy to especially occur material under the variation of arc compass screen surface angle has at feeding end and interlude and carries preferably effect, but will the phenomenon of piling up occur at compass screen surface during to discharge end; In addition, during due to practical operation in pan feeding Bed for Fine Coal more, sew up closely also many with sieve, material circumference travel track by a small margin very easily produces blocking screen seam phenomenon, cause follow-up a large amount of little particle and water of ratio sieve seam can not become screenings, thereby cause the large tracts of land situation of metalling run out, finally affect the dehydrating effect of vibration sieve bend; When the coal slime dewatering effect does not reach desired concentration, high-frequency screen and coal slime centrifuge will seriously be metalled run out.And straight path circularoscillations sieve; usually the double-shaft vibration exciter that is made of two groups of eccentric group of the reverse rotation that possesses identical eccentric angle and quality is to form its vibration module; during use, material can produce along its compass screen surface the action of advancing faster; therefore its operating rate is higher; yet due to the oscillation trajectory of its linearity, often be difficult to be applied in the vibratory sieve of arc compass screen surface.How to seek a kind ofly can effectively solve the defective of above-mentioned prior art, and a kind of vibration sieve bend rational in infrastructure and practical can be provided, for those skilled in the art compel technical barrier to be solved.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, so that a kind of novel elliptical orbit vibration sieve bend rational in infrastructure and practical, its high efficiency to be provided.

For achieving the above object, the utility model has adopted following technical scheme: a kind of novel elliptical orbit vibration sieve bend, comprise support, possess the screen cloth part of arc compass screen surface and be used for screen cloth part is suspended and be fixedly arranged on suspension part on support, novel elliptical orbit vibration sieve bend also comprises be used to ordering about the vibration component of screen cloth part along set direction vibration; On two vibrating shafts on described double-shaft vibration exciter, the eccentric mass of exciting interblock has difference.

Described novel elliptical orbit vibration sieve bend comprises screen box, and screen cloth part is fixed in its box house and the screen box inner chamber is divided into top feed cavity and blanking chamber, bottom; Postpone direction and material feeding and direct of travel of the arc compass screen surface of screen cloth part arranges in the same way.

Described novel elliptical orbit vibration sieve bend also comprises for the feed tank to the screen cloth part feed, and the discharge end of described feed tank is erected on the upper end sieve mouthful place of screen cloth part and the corresponding place of setting up on its feed direction and screen cloth part in the tangent setting of cambered surface.

Vibration component also comprises the motor as the double-shaft vibration exciter power source, described motor and double-shaft vibration exciter wherein consist of belt transmission between an axle head; Described motor speed is 1400r/min.

The beneficial effects of the utility model are:

1), the double-shaft vibration exciter of two eccentric shafts by possessing different eccentric mass, the centrifugal force direction that its diaxon produces when certain position just on the contrary with the vertical direction in this position on both direction just identical, making a concerted effort by a fixed point both, thereby make its extremity track of making a concerted effort form elliptical orbit, oval long axis direction is exactly the two identical directions of centrifugal force direction, and the direction of minor axis is exactly the direction of two centrifugal intertia force opposite directions; Its major axis consists of the component that promotes mass transport; the speed of mass transport is higher; minor axis consists of the component of strengthening material loosening; strong loose and arrange again effect to guarantee to be had by the sieve material; it has had the advantage of circular trace circularoscillations sieve and straight path circularoscillations sieve concurrently; improve again the conveying effect when making the material intensified sorting, effectively improved material that traditional vibration sieve bend occurs at the packing phenomenon of its discharge end, operating efficiency significantly improves.

2), select by the Reasonable Parameters of motor, rely on higher excited frequency, thus improved material and moisture on the screen cloth part on compass screen surface vibration and cutting effect, to reduce the clogging of material on the compass screen surface that traditional vibration sieve bend occurred; The angle setting of feed tank has guaranteed that also material enters angle when entering screen cloth part, thereby guarantees the effective cutting purpose between the arc compass screen surface of water-containing materials and screen cloth part, finally guarantees the tension failure effect of material surface water.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural principle schematic diagram of double-shaft vibration exciter of the present utility model.

Each parts label correspondence is as follows:

10-support, 20-screen cloth part, 30-suspension part, 40-double-shaft vibration exciter, 50-screen box, 60-feed tank, 70-motor a-first vibrating shaft c-second vibrating shaft b-gear d-exciting piece

The specific embodiment

For ease of understanding, in conjunction with Fig. 1-2, concrete assembly of the present utility model is done following the description herein:

Elliptical orbit vibration sieve bend of the present utility model, as shown in Figure 1, comprise feed tank 60, motor 70, screen cloth part 20, screen box 50 and as the support 10 of its matrix, wherein screen box 50 is able to suspension and is arranged on support 10 by suspension part 30, is provided with double-shaft vibration exciter 40 on screen box 50 simultaneously.During practical operation, again as shown in Figure 2, drive the i.e. first vibrating shaft a rotation of a wherein vibrating shaft of double-shaft vibration exciter 40 with belt transmission by motor 70, this axle forces i.e. the second vibrating shaft c synchronous rotary of another vibrating shaft by its internal gear b, existence due to exciting piece d, diaxon turned round simultaneously and produced the centrifugal intertia force of synchronous backward this moment, the barycenter of making a concerted effort to pass through screen box 50 of this exciting force.The centrifugal intertia force that makes above-mentioned synchronous backward is F1 and F2, because the eccentric mass of exciting piece on two vibrating shafts is unequal, make F1 ≠ F2, the exciting force that produces major axis is F1+F2, the exciting force of minor axis is | F1-F2| finally forces screen box 50 to produce the vibration of balanced elliptic shapes.Can realize different vibrating direction angles and amplitude by phase angle and the quality of regulating two exciting pieces on vibrating shaft.

During actual the use, can make arc compass screen surface place silk screen on screen cloth part 20 be trapezoidal shape and arrange, the compass screen surface vibrating direction angle of screen cloth part 20 may be selected to be 20～60 ° simultaneously, and also namely the exciting force of this elliptical trajectory angle of making a concerted effort with horizontal plane is 20～60 °.Like this, when material fed compass screen surface by the feed tank 60 at certain altitude place along the compass screen surface tangential direction, under the effect of centrifugal force, material was close to screen movement.Material is through the dissection of grating, makes the tension failure of particle surface water in the grating angle, and parts of fine material and water are cut under sieve, discharge compass screen surface by discharging opening e simultaneously under the effect of centrifugal force, become screenings, coarse grain and a small amount of particulate are stayed on compass screen surface, become oversize.Simultaneously, material also is subject to the effect of the frictional force that produces between the grating on material and compass screen surface on sieve when moving, make the different flow velocity of generation between material, the baffling phenomenon occurs, thereby aggravated the effect of feed separation, its high efficiency and dependable performance is stable.

Claims (4)

1. novel elliptical orbit vibration sieve bend, comprise support (10), possess the screen cloth part (20) of arc compass screen surface and be used for screen cloth part (20) is suspended and be fixedly arranged on suspension part (30) on support (10), novel elliptical orbit vibration sieve bend also comprises be used to ordering about the vibration component of screen cloth part (20) along set direction vibration; It is characterized in that: described vibration component comprises double-shaft vibration exciter (40), and on two vibrating shafts on described double-shaft vibration exciter (40), the eccentric mass of exciting interblock has difference.

2. novel elliptical orbit vibration sieve bend according to claim 1, it is characterized in that: described elliptical orbit vibration sieve bend comprises screen box (50), and screen cloth part (20) is fixed in screen box (50) box house and screen box (50) inner chamber is divided into top feed cavity and blanking chamber, bottom; Postpone direction and material feeding and direct of travel of the arc compass screen surface of screen cloth part (20) arranges in the same way.

3. novel elliptical orbit vibration sieve bend according to claim 1 and 2, it is characterized in that: described novel elliptical orbit vibration sieve bend also comprises for the feed tank (60) to screen cloth part (20) feed, and the discharge end of described feed tank (60) is erected on the upper end sieve mouthful place of screen cloth part (20) and the corresponding place of setting up on its feed direction and screen cloth part (20) in the tangent setting of cambered surface.

4. novel elliptical orbit vibration sieve bend according to claim 3, it is characterized in that: vibration component comprises the motor (70) as double-shaft vibration exciter (40) power source, described motor (70) and double-shaft vibration exciter (40) wherein consist of belt transmission between an axle head; Described motor (70) rotating speed is 1400r/min.

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