CN2277830Y

CN2277830Y - Centrifugal screen for granular material

Info

Publication number: CN2277830Y
Application number: CN 96243972
Authority: CN
Inventors: 孙复华
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-19
Filing date: 1996-10-19
Publication date: 1998-04-08
Anticipated expiration: 2006-10-19

Abstract

The utility model relates to a centrifugal screen for granular materials. A rotary disk (2) and a reversed cone table-shaped screen basket (1) fixed on the rotary disk are arranged above a machine base (4), the rotary disk is connected with a motor (8) through a shaft, the screen basket is provided with a plurality of roots of screen bars installed in a radiation shape, and the periphery of the screen basket is provided with a collection cover (9). The materials are thoroughly screened through the utility model by making use of centrifugal force which is much greater than gravity. The utility model not only greatly improve the production efficiency, but also has the advantages of low power consumption, simple whole structure, low manufacture cost and low maintenance and running cost.

Description

The granule materials screen centrifuge

The utility model metal particles material screening apparatus field.

Material is the requisite procedures of many industries by grading, because every profession and trade has different characteristics, the used screening plant of classification is had different requirements.Though the various sieve descriptions that appear on the market are various, but vibratory sieve is still main flow, such sieve leans on gravity to sieve thoroughly substantially, a kind of compass screen surface is produced a granularity kind, because single machine yield and cover surface are directly proportional, increase cover surface and become the most effective means of raising output, this all brings a lot of inconvenience to Facility Layout, material distribution, construction investment, production management etc.In addition, huge and use construction sites such as occasion that the place needs often to change, for example bridge, dam, highway in many screening amounts, also lack in light weight, productivity ratio is high, screening plant movably, has influence on construction speed.

The purpose of this utility model is to utilize centrifugal force to force the principle of being disperseed, sieving thoroughly by the sieve granule materials, provides a kind of simple in structure, the screen centrifuge that power consumption is low, productivity ratio increases substantially.

The utility model is realized its purpose as follows: there is rotating disk 2 top of support 4 and is fixed on inversed taper platform shape basket 1 on the rotating disk, there is the support spring 5 that places on the basis 6 below, support edge, rotating disk is connected with motor 8 by axle, basket has many to be the grating that radiation-like is installed, and is with collecting hood 9 outside basket.The angle of grating and vertical line is advisable with the 15-45 degree.

The centrifugal force that screen centrifuge of the present utility model has produced when having utilized basket to drive by the rotation of sieve material disperses material and saturating sieve, because will make centrifugal force reach dozens or even hundreds of times of gravity acceleration g is easy to realize technically, therefore utilize centrifugal force Billy with the unit are of gravity screening thoroughly the sieve amount can improve 10 times or more, can also realize that a kind of basket produces several granularity kinds.Because the power consumption of this screen centrifuge is used for being sieved material substantially entirely and obtains kinetic energy, and material time of staying in basket is extremely short, it is extremely low therefore to finish screening institute power drain, and it is also very reliable to work.This machine has simultaneously also that complete machine structure is simple, in light weight, requirement on machining accuracy is not high, cost of manufacture and operating maintenance expense are low, be easy to make advantages such as movable type, than conventional screen significant superiority is arranged, can be widely used in the screening of industries such as mineral, coal, building stones or add matting.

Embodiment further specifies the utility model below in conjunction with accompanying drawing:

Fig. 1 is the structural representation of the utility model screen centrifuge.

Rotating disk 2, basket 1 are arranged above support 4, there is support spring 5 below at support edge, basket is the inversed taper platform shape, and is up big and down small, is fixed on the rotating disk, being the width of cloth by many gratings penetrates shape and installs and to form compass screen surface, little going up greatly under each grating spacing, grating can be a linear, also can make shaped form on demand, making compass screen surface both can be taper seat, also can be bowl-shape or other shape; Also can the bottom few top of grating number is many can also be laid netted compass screen surface and produce single granularity product to constitute equidistant intervals at the basket inner surface, and when grating linearly during shape, the angle of grating and vertical line is advisable with the 15-45 degree.Basket is connected with drive motors 8 with rotating disk, and connecting axle is by bearing 4 and bearing 5 location.

When using this screen centrifuge, wait to sieve granule materials and send into basket from the top of basket 1, because of basket is rotating, the material that falls in the basket is subjected to moving from bottom to top along compass screen surface simultaneously with the basket rotation behind the centrifugal action, constituted the three-dimensional spiral motion in the space, granule materials is subjected to the tangential component of centrifugal force and radial component at the volley and makes that material is dispersed, sieve thoroughly, and fail the material that sieves in the basket bottom then up and sieve thoroughly on compass screen surface top along compass screen surface.Because being radiation-like from bottom to top, installs the grating of basket, little going up greatly under the distance between grating, so the granule material just sieves thoroughly in the bottom of basket, the larger particles material sieves thoroughly at the basket higher position, the largest particles material is at higher local saturating sieve, cross major diameter saturating not the particle of sieve then overflow from the basket top.According to the grading requirement, can intercept the granularity of different size at differing heights, its method is to install corresponding collecting hood 9 (bottom of collecting hood is not shown in the drawings) on the peripheral differing heights of basket, and all materials of collecting under a collecting hood are a particle size fraction.According to the number and the setting height(from bottom) of different needs design collecting hoods, and the setting height(from bottom) of collecting hood can be adjusted within the specific limits.In order to strengthen the scope of application of stock grading, can electricity consumption controlled atmosphere knotter screen basket rotating speed, also can be by changing compass screen surface or sieve aperture shape, make material in basket, obtain constant speed or etc. acceleration or subtract quicken or bed of material uniform thickness motion etc., also can regulate screening effect with changing grating and vertical line angle angle.Because compass screen surface weares and teares easily, can apply with antifriction metal (AFM) or plastic material at the basket inner surface, basket can also be made and changed as attrition component, carry out with continuing of guaranteeing to produce.When the basket central vertical is provided with fixing sparge pipe, can be cleaned simultaneously in grading particle, constitute the cleaning and dewatering sieve.Sieve speed thoroughly for accelerating material, can add exciting device in case of necessity.

The centrifugal force that rotation produces to be being advisable between hundreds of gravity acceleration gs at several, and for making centrifugal force controlled in this scope, the rotating speed of basket is controlled at generally that per minute is tens of to go between hundreds of commentaries on classics.According to calculating, treating capacity be 1000 tons/time unit, drive motors only need tens of kilowatts just much of that, and to reach this output be fully possible.

Claims

1. granule materials screen centrifuge, drive unit and rotation compass screen surface are arranged, there is rotating disk (2) top that it is characterized in that support (4) and is fixed on inversed taper platform shape basket (1) on the rotating disk, and there is support spring (5) below, support edge, and rotating disk is connected with motor (8) by axle; Basket has many to be the grating that the width of cloth is penetrated the shape installation, and basket is with collecting hood (9) outward.

2. granule materials screen centrifuge as claimed in claim 1 is characterized in that grating is linearly.

3. granule materials screen centrifuge as claimed in claim 1 is characterized in that the curved shape of grating.

4. as claim 1 or 2 or 3 described granule materials screen centrifuges, the angle that it is characterized in that grating and vertical line is the 15-45 degree.

5. as claim 1 or 2 or 3 described screen centrifuges, it is characterized in that few top, grating number bottom of basket (1) is many, or lay netted compass screen surface at the basket inner surface.

6. as claim 1 or 2 or 3 described screen centrifuges, it is characterized in that the inner surface of basket (1) applies with antifriction metal (AFM) or plastic material.

7. screen centrifuge as claimed in claim 1 is characterized in that in basket (1) central vertical sparge pipe being set.

8. screen centrifuge as claimed in claim 1 is characterized in that the setting height(from bottom) of collecting hood (9) can be regulated within the specific limits.

9. screen centrifuge as claimed in claim 1 is characterized in that additional exciting device on basket.