Introduction of Circular Vibrating Screen

Circular Vibrating Screen is a kind of new and highly effective vibrating screen that does circular vibrations and has multiple layers. Circular vibrating screen adopts cylinder postures eccentric block to produce strong exciting force. Its main body is connected by high strength screw bolts. A circular, elliptical vibration motion is created in order to sieve the materials efficiently. It is composed of screen box, screen mesh cloth, suspension (or support) device, underframe and motor.

circular virating screen

► Working principle
Circular vibrating screen separator uses eccentric block(YK type)/eccentric shaft(YA type) to produce strong exciting force, due to the unbalanced centrifugal force of inertia of the weights on the exciter, screen box vibrates, it can obtain different amplitudes by changing the exciter eccentric weight.
► Application
Ore circular vibrating screen is available for smelting , quarry , coal preparation, ore dressing, energy, power, chemical industry,construction material.
► Features
   1.Simple structure, easy maintenance, high production efficiency
   2.Using large clearance bearings and lubricated with thin oil, little noise and long service life
   3.Sieve beam and screen box adopts high strength bolt connection, no welding processing
   4.Small amplitude, high frequency, large dip angle structure to enable high screening efficiency and great handling capacity.

circular vibrating screen

► Advantage

    A.Common features and performance of our Circular Vibrating Screen

        1.High screening efficiency 

        2.Strong vibration force created

        3.Adoption of punching sieve or steel made screening mesh in order to prevent blockage.

        4.Screen body connected by using high strength screw bolts.

        5.Adopts spring steel woven mesh or perforated sieve-plate, which is helps to prolong the service life and prevent blockage.

        6.Rubber vibration spring is used to reduce noise pollution and provide smooth vibration operation. 

 

    B.Drive and Mounting of Circular Vibrating Screen
 

 Drive is by electric motor and cardan shaft to the main drive shaft equipped with a single unbalance weight where required additional v-belt can be provided. The drive shaft is mounted on heavy duty roller bearing sets, lubricated with grease or oil. Like the linear vibratory screens, circular vibrating screens are mounted on reinforced rubber springs to prove the same benefits in performance and longer lifespan.

What Should We Pay Attention to the Selection of Vibrating Screen Coupling

Vibrating screen coupling is commonly used in mechanical transmission components. It is used to put two shaft coupling together, a component which cannot separate with rotation and transmission torque of two shafts when the vibrating screen is running; only after the machine stop and after joint apart, two shafts can be separated. Coupling is a kind of standard part, when using we can choose coupling according to the requirements of national standards and the using requirements.

 

Due to the manufacturing and installation error, two shafts of coupling connection may occur deformation after bearing and the influence of temperature change, often cannot guarantee strict centring, however, there is some degree of relative displacement. So choose cross coupling between the reducer and the clutch, oldham coupling is composed of two end surface fluted half coupling and the middle plate of protruding teeth both sides. Because convex teeth can slide in groove, so it can compensate for the relative displacement between the two shafts in installation and operation. This kind material of coupling parts can be available for 45# steel, work surface needs heat treatment to improve its hardness. It is also available for Q275 steel when the requirement is lower, no heat treatment is required. In order to reduce friction and tear, when using we should lubricate from the oil hole in the middle.
Because sliding pair is consist of half coupling and the middle plate, which can't occur relative rotation, therefore, angular velocity of the drive shaft and the driven shaft should be equal. But when there are relative displacement between the two shafts, middle plate will generate a lot of centrifugal force, which will increase the dynamic load and wear. Therefore when we choose coupling, we should pay attention to that working speed shall not be greater than the specified value. 

Introduction of Gyratory Vibrating Screen

►Customer reference list

CUSTOMER REFERENCE LIST (YEAR 2012-2014)
NO.	EQUIPMENT	VENDOR'S SCOPE OF SUPPLY	QUANTITY	TIME
		PROJECT LOCATION
13	Gyratory Screen	Srilanka	1 Set	20121024
25	Gyratory Screen	Australia	1 Set	20130800
33	Gyratory Screen	Iran	1 Sets	20140129
40	Gyratory Screen	Guyana	6 Sets	20140500
43	Gyratory Screen	Srilanka	1 Set	20140700

►IntroductionGyratory Screen is a new developed equipment particularly for urea .The main function is to provide accurate separation of materials without product deterioration, thereby resulting greater product yields at higher production rates. This machine consists of top cover, top screen fame, spacer, bottom screen fame, the base space and the screen box. The unique gyratory motion of the near horizontal screen surface and the available screen mesh cleaning system secure the gyratory vibrating screen quality as a high capacity product that efficiently developed for materials screening purposes. 

gyratory vibrating screen

► Application

As one of new type and high standard screening equipment, gyratory screen can be used to screen of raw materials and bean curd in large scale grease factory, and screen or classify large granular urea, powder materials or granulated feed in feed mill. Also, it can be used for preliminary cleaning of raw material in feed mill as well as classifying intermediate products after regrinding in middle-sized feed mill. What's more, gyratory screen can be widely used to screen and classify materials or finished products for grain, sodium bicarbonate, large granular urea, urea granules, ceramsite, zirconia, reduced iron powder, barite, spice, plastic, mining industry, rubber, wood industry, plywood, medicine, sugar, mining, papermaking, chemical, refractory materials, building materials, activated carbon, food, PVC powder and other fine materials etc..With the development of market circulation economy, it is increasing to be used in waste plastic industry to classify, and also can do size grading for materials with broken.

gyratory vibrating screen motor

► Working principle
Gyratory screen adopts to Rotex technology,we also call it Rotex screen. which obviously improves the distribution of the material, thus it will enhance the screening efficiency and the effective utilization of the screen surface, also reduce the powder content of the final material .This design is totally enclosed without dust pollution,it not only improve the operation environment but also reduce the dynamic ratio and foundation load effectively.