CN101850332A

CN101850332A - Zero-vibration rolling classifying screen

Info

Publication number: CN101850332A
Application number: CN 201010190501
Authority: CN
Inventors: 张北平; 魏洪海; 程玉省; 李翔; 徐秀华; 唐为勤; 倪亚娟
Original assignee: QISHAN COAL MINE OF XUZHOU MINING GROUP CO Ltd
Current assignee: QISHAN COAL MINE OF XUZHOU MINING GROUP CO Ltd
Priority date: 2010-05-28
Filing date: 2010-05-28
Publication date: 2010-10-06

Abstract

The invention relates to a zero-vibration rolling classifying screen, belonging to the technical field of a classifying screen. The classifying screen comprises chain wheels, chains, a base, idler wheels, a cover, a positive speed gearbox, a motor, a baffle and a coal screen, wherein the idler wheels are evenly arranged side by side, two ends of each idler wheel are connected on the base by the cover, the motor is connected with one end of an idler wheel by the positive speed gearbox, the chain wheel is connected with the other end of the idler wheel, chain is arranged between chain wheels of every two idler wheels, the baffle is arranged above two sides of the base, and the coal screen is connected with the lower side of the idler wheels. The invention has the advantages that: 1) the zero-vibration design has low noise and little environment pollution and reduces noise harm to human body; 2) when the idler wheels are in an operating mode, the rolling rings are in staggered distribution, the surface is bright and clean, damp coal is hard to adhere, and coal is not blocked with no remaining coal, thereby realizing labor and time saving; 3) the idler wheels are hard and durable, can bear bigger impact force, are hard to deform and have low failure rate; and 4) the chain wheel design has exact transmission ratio and strong overload capacity.

Description

Zero-vibration rolling classifying screen

Technical field

The present invention relates to a kind of classifying screen, particularly a kind of Zero-vibration rolling classifying screen.

Background technology

At present, in colliery washery, the sieve that uses generally is to utilize the centrifugal force work principle, motor makes oscillator eccentric block and eccentric shaft produce rotation at a high speed through shaft coupling, material is on the grating of vibration up and down in the transmission course, see through sieve less than the particle of sieve aperture, be filtered on the next stage sorting arrangement greater than the particle of sieve aperture.In sort process, exist shortcoming;

(1) the sieve end, be in vibrational state all the time, produces big noise, contaminated environment.(2) grating keeps relative fixed, and moist carbon piece is easily stuck with paste mesh, and screening efficiency is low.

Summary of the invention

The objective of the invention is to provide a kind of: the Zero-vibration rolling classifying screen that noise is little during screening, screening efficiency is high.

The object of the present invention is achieved like this: this classifying screen comprises sprocket wheel and chain, base, roller, door, reduction box, motor, baffle plate and sweeps the coal device, roller be many uniform side by side, two ends of roller are connected on the base by door, motor is connected with an end of one of them roller by reduction box, the other end at roller is connected with sprocket wheel, be connected with chain between the sprocket wheel of per two rollers, above the base both sides spillplate be housed, the roller downside is connected with sweeps the coal device.

Described roller comprises axle and rolling ring, and rolling ring is a plurality of, uniform being welded on the axle, and the rolling ring on the adjacent rollers is interlaced arranges; There are four uniform arc grooves at the rolling ring edge.

Beneficial effect, owing to adopted such scheme, motor via reducer drives roller and rotates, many rollers are distributed on the base side by side, a plurality of rolling rings are uniform to be welded on the axle, interlaced the arranging of rolling ring on adjacent two rollers, spacing between the rolling ring equates, constituted a drum screen that equidistant from distance is arranged than large tracts of land, the arc groove at rolling ring edge drives and places the coal on the roller to transmit, coal is in the process of transmission, and some satisfactory coal particles enter sieve storehouse down, the drum screen that enters the next stage equidistant from distance that particle is bigger through equidistant from distance; Screening process is exactly the process that coal transmits downwards along roller, the sieve storehouse down of bleeding, coal rolling ring gap on gap between roller and the roller, coal is storehouse under the sieve that bleeds between the roller that rolls, below roller, be provided with and sweep the coal device, moist coal is difficult for sticking on the roller, can sieve various coals; Determine roller gap and rolling ring gap according to the screening rank, this roller classifying screen has thoroughly changed the version of eccentric wheel vibratory sieve in the past, and noise is little during screening, noiselessness pollutes, safeguard work personnel's physical and mental health, the screening efficiency height has reached purpose of the present invention.

Advantage:

(1) adopt the friction design, noise is low, and environmental pollution is little, reduces the injury of noise to human body, guarantees the physical and mental health of field worker.

(2) roller is in rolling condition, and rolling ring is interspersed, any surface finish, and moist coal is difficult for adhering to.The rolling disk edge designs becomes the camber line connected in star, lumped coal by the time, forward propulsion can be provided, do not block the chute blockage piece, and roller below is equipped with and sweeps the coal device, guarantee that in time cleaning automatically is detained coal, saving of work and time.

(3) roller is that steel plate by bigger first steel of diameter and thick 12mm processes, and is sturdy and durable, can carry bigger impulsive force, and not yielding, fault rate is low.

Plurality of advantages such as (4) the employing sprocket design has nonelastic slip and skidding, and gearratio is accurate, and overload capacity is strong.

Description of drawings

Fig. 1 is a structure chart of the present invention.

Fig. 2 is a side-looking structure chart of the present invention.

Among the figure, 1, sprocket wheel and chain; 2, base; 3, roller; 4, door; 5, reduction box; 6, motor; 7, baffle plate; 8, sweep the coal device.

The specific embodiment

Embodiment 1: this classifying screen comprises sprocket wheel and chain 1, base 2, roller 3, door 4, reduction box 5, motor 6, baffle plate 7 and sweeps coal device 8, roller be many uniform side by side, two ends of roller are connected on the base by door, motor is connected with an end of one of them roller by reduction box, the other end at roller is connected with sprocket wheel, is connected with chain between the sprocket wheel of per two rollers, and all rollers rotate in the same way, above the base both sides spillplate is housed, the roller downside is connected with sweeps the coal device.

(1) structure is formed: this is a kind of coal washery screening plant, mainly by motor, reduction box, base, roller, rolling disk, sprocket wheel and chain, door, baffle plate, sweep coal device etc. and partly form.Roller is installed on the base side by side, and number of rollers can be fixed according to the place needs between ten to 20.Roller is made up of axle and rolling ring, and rolling ring is welded on the axle, and rolling ring is a plurality of, is distributed on the axle, and the rolling ring on the adjacent rollers is interlaced.There are four uniform arc grooves at the rolling ring edge, coal cinder by the time increase frictional force, be difficult for card chute blockage piece.The rolling disk that the gap is interspersed between roller and the roller such as is divided at big leakage coal space, is convenient to the screening to raw coal.

Base becomes 20 degree with horizontal plane, roller is installed on the base side by side successively, two ends are fixed with door, the gap is determined as required between roller, and an end spindle nose of all rollers all is equipped with sprocket wheel, is linked to be integral body by chain, above the base both sides, spillplate is housed, the roller downside is to sweep the coal device, is used for cleaning the ickings that sticks on the roller, and motor links by reduction box and the roller spindle nose that is positioned at the centre position.

(2) transmission process: motor links to each other with the spindle nose that is positioned at the centre position roller by reduction box, the other end spindle nose of this roller is connected with other rollers by sprocket wheel again, transmit to other rollers from the power of the motor roller by being positioned at the centre position, realize that all rollers rotate with speed in the same way.

(3) operation principle: when raw coal enters the Zero-vibration rolling sieve, coal cinder is subjected to the effect of the roller surface frictional force of self gravitation and rotation, roll downwards, the less coal cinder that meets the screening condition of some particles, enter sieve storehouse down from gap between roller, the coal cinder that particle is bigger then rolls downwards along roller, enters the next stage screening plant.Thereby realize the screening function.

Claims

1. Zero-vibration rolling classifying screen, it is characterized in that: this classifying screen comprises sprocket wheel and chain, base, roller, door, reduction box, motor, baffle plate and sweeps the coal device, roller be many uniform side by side, two ends of roller are connected on the base by door, motor is connected with an end of one of them roller by reduction box, is connected with sprocket wheel at the other end of roller, is connected with chain between the sprocket wheel of per two rollers, above the base both sides spillplate is housed, the roller downside is connected with sweeps the coal device.

2. Zero-vibration rolling classifying screen according to claim 1 is characterized in that: described roller comprises axle and rolling ring, and rolling ring is a plurality of, uniform being welded on the axle, and the rolling ring on the adjacent rollers is interlaced arranges; There are four uniform arc grooves at the rolling ring edge.