CN2547421Y

CN2547421Y - Self-cleaning screen mesh

Info

Publication number: CN2547421Y
Application number: CN 02242262
Authority: CN
Inventors: 周新民
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-19
Filing date: 2002-07-19
Publication date: 2003-04-30
Anticipated expiration: 2011-10-11

Abstract

A self-cleaning screen mesh belongs to the material screening technical filed and mainly solves the problem of the screening efficiency of a screen mesh. The technical proposal is that: one end of one of a plurality of screen bars is perpendicular to a beam mounting and is fixed on the beam mounting, and the other end of each screen bar is in a free state; both ends of the beam mounting are fixed on side plates; the side plates are connected with a sieve shaker. The utility model is characterized in that: movable screen bars are formed by elastic metal bars with bends on the free ends, at least two movable screen bars are fixedly connected through a connecting plate with due mass, while adjacent static screen bars arranged at intervals are straight bars longer than the connecting plate on the ends of the movable screen bars and keep a due distance away from the connecting plate of the movable screen bars. The utility model which can effectively improve screening efficiency is applicable to steel plants and mines.

Description

The self-cleaning screen cloth

The application is to be October 11 calendar year 2001 01262004.1 applying date for original applying number, and denomination of invention is dividing an application of self-cleaning screen cloth.

Affiliated technical field

The utility model relates to a kind of Cantilevered screen, belongs to the material screening technical field.

Technical background

We know, own to since the material screening, have in arms invariably well sifted this purpose of this sieve is being implemented, is improving, innovated, and updating the material of screen cloth, structure and mesh shape etc., as from the fixing woven screen of mesh, the punching screen cloth is to the broach screen cloth, until to the string screen cloth that can produce secondary resonance at random, the rod screen cloth, Flexible sieve of these classes such as rubber polyurethane or the like all is the achievements that produce for the problem that solves critical particle jam mesh.Facts have proved: fixedly the screen cloth impotentia of mesh solves the blockage problem in the screening process, and is especially even more serious in wet sticking its obstruction of occasion of material.And take a broad view of the producible at work secondary resonance of existing Flexible sieve is to make the jam phenomenon that improvement has been arranged, but its improvement is limited, inadequate, and the phenomenon that critical particle stops up mesh still exists.The compound screen cloth that a kind of fixed, moving grating is formed is disclosed in Chinese patent ZL99221850.0 and ZL99222320.2, it mainly is to utilize fence type elasticity grating producing secondary vibration at random and limiting adjacent one and make the vibrative difference of grating, critical particle is ejected or saturating sieve helping in vibration, stop up mesh certain effect is arranged solving.But, in actual use, material when grating, after the material of especially moving grating, diameter, length are determined, its single quiet rigidity has also just been decided, the elasticity dynamics of its secondary vibration has also just been determined to get off, and when having its elasticity dynamics of secondary vibration of producing during in random vibration when grating less than the resistance of critical particle jam mesh, still can occur stopping up mesh or sticking up excellent phenomenon.

Summary of the invention

Technical problem to be solved in the utility model is to overcome the deficiency of above-mentioned prior art, and provides a kind of screening efficiency high self-cleaning screen cloth.

Technology contents of the present utility model is: this kind self-cleaning screen cloth, its grating are many one end are perpendicular to roof beam structure and be fixed on the roof beam structure by setting the elastic metallic rods that spacing be arranged in parallel that the other end is free state; Roof beam structure is arranged in parallel by the beam distance of setting and the inclination angle of setting, and its two ends are fixed on the side plate; Side plate and vibrating sieving machine body link, it is characterized in that free end has the moving grating of elastic metallic rod composition of elbow, and it is at least two moving gratings are fixedly connected by yoke plate with certain mass, and adjacent spaced apart quiet grating is the straight bar of holding in both hands, the yoke plate of the moving grating termination of its length is long, and keeps certain distance with moving grating yoke plate.

Further technical scheme is: the quiet grating free end that described adjacent spaces is arranged also is provided with elbow, and has the yoke plate of certain mass and length that at least two quiet gratings are fixedlyed connected.Form the different grating group section of quiet rigidity.

The beneficial effects of the utility model are to utilize the former vibration force of vibratory sieve, strengthen the elasticity dynamics of (or restriction) elasticity grating, so that the amplitude difference significant effective of the secondary vibration that adjacent grating produces, its elasticity dynamics also can overcome the resistance of critical particle jam effectively, make a material of jam or upspring or sieved thoroughly, automatically screen cloth is cleared up, thereby the raising of screening efficiency is broken through.Even to the screening occasion of wet sticking thing, screening effect is also very good.

Description of drawings

Be elaborated below in conjunction with accompanying drawing.

Fig. 1 is the cross-sectional schematic of first embodiment;

Fig. 2 is the cross-sectional schematic of second embodiment.

Among the figure, the 1-roof beam structure, the quiet grating of 2-, 3-moves grating, 4-side plate, 5-yoke plate, 6-yoke plate.

The specific embodiment

As Fig. 1 is one of specific embodiment of the utility model.This kind self-cleaning screen cloth, its grating are many one end are perpendicular to roof beam structure 1 and be fixed on the roof beam structure by setting the elastic metallic rods that spacing be arranged in parallel that the other end is free state; Roof beam structure 1 is arranged in parallel by the beam distance of setting and the inclination angle of setting, and its two ends are fixed on the side plate 4; Side plate and vibrating sieving machine body give fastening the connection by the screw of side plate by securing member.The quantity of described grating can decide according to the inboard width of screen cloth, the diameter of grating, the factors such as parallel distance between adjacent grating; The quantity of described roof beam structure can decide according to the length of screen cloth and the factors such as distance between the roof beam structure.The inclination angle of roof beam structure can be according to the character of material, factors such as the size decision of screening amount in the unit interval.After each parameter configures, finish the assembling of this screen cloth on the vibratory sieve body on request, when vibratory sieve after the vibrating motor exciting drives, screen cloth is random vibration also, realizes the screening to material.Moving grating 3 free ends described in this fact Example are provided with elbow, and it is at least two moving gratings are fixedly connected by the yoke plate 6 of tool certain mass, and adjacent spaced apart quiet grating 2 is the straight bar of holding in both hands, the yoke plate 6 of moving grating 3 terminations of its length is long, and leaves to determining deviation below the rod with above the moving grating yoke plate 6.Because the yoke plate group section of the tool certain mass that is provided with in moving grating termination, the elasticity dynamics and the amplitude of the secondary vibration that is produced in random vibration all will increase, make it to produce two kinds of effects: the one, moving grating elasticity dynamics can effectively be cleared up the jam particle during greater than the jam resistance of jam particle.The 2nd, between the Oscillation Amplitude that moving grating group section is set is greater than moving grating yoke plate and quiet grating apart from the time, the yoke plate of moving grating group section will impact quiet grating 2, making quiet grating also will be subjected to moving bar yoke plate in the moment that is subjected to random vibration to produce secondary vibration impacts and produces and be forced to vibration, its result makes the sieve aperture between dynamic and static grating shake off the bonding of wet sticking powder is easier, and the self-cleaning effect is significant effective more.

Fig. 2 shows two of specific embodiment of the utility model.The free end of quiet grating 2 also makes elbow on the basis of embodiment one, and has the yoke plate 5 of certain mass and length that at least two quiet gratings 2 are fixedlyed connected.Described yoke plate 6 is to form the different yoke plate group section of connection grating quantity with the moving grating 3 or the quiet grating 2 of yoke plate 5 connections more than two and two that connect more than two and two, has also just had different quiet rigidity.Adding its dynamic and static grating is adjacent and setting at interval, and the yoke plate 5 that yoke plate 6 quality of the moving grating 3 of connection connect quiet grating 2 is big, and the radical of the moving grating 3 that yoke plate 6 connects is less with respect to the quiet grating 2 of yoke plate 5 connections.When the vibratory sieve body drives the screen cloth vibration, the secondary vibration of moving grating yoke plate group section obviously is greater than the secondary vibration that quiet grating yoke plate group section is produced, because the grating group Duan Qijing rigidity of many interlocks is greater than the quiet rigidity of single grating, its effect is that adjacent grating can be done relative motion in certain limit, realize the continuous variation of mesh in certain amplitude, just there be not critical fixing material yet, and when the elasticity dynamics of its secondary vibration during greater than the jam resistance of jam particle, can eject or make it sieve to the particle of jam mesh effectively, reach the self clean-up action of screening process, and eliminated the easy phenomenon of sticking up rod that produces of single grating.

For moving grating and quiet grating, the two is relative.Can be set to the difference on length difference or the diameter.In a word, what amplitude was big is moving grating, otherwise is quiet grating.

Claims

1, a kind of self-cleaning screen cloth, its grating are many one end are perpendicular to roof beam structure and be fixed on the roof beam structure by setting the elastic metallic rods that spacing be arranged in parallel that the other end is free state; Roof beam structure is arranged in parallel by the beam distance of setting and the inclination angle of setting, and its two ends are fixed on the side plate; Side plate and vibrating sieving machine body link, it is characterized in that free end has the moving grating of elastic metallic rod composition of elbow, and it is at least two moving gratings are fixedly connected by yoke plate with certain mass, and adjacent spaced apart quiet grating is the straight bar of holding in both hands, the yoke plate of the moving grating termination of its length is long, and keeps certain distance with moving grating yoke plate.

2, self-cleaning screen cloth according to claim 1 is characterized in that the quiet grating free end that described adjacent spaces is arranged is provided with elbow, and has the yoke plate of certain mass and length that at least two quiet gratings are fixedlyed connected.