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YAg Heavy Duty Vibrating Screen
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YAg Heavy Duty Vibrating Screen

WRIKU's YAg circular Heavy Duty Rcok vibrating screen is mainly used for granularity classification of loose materials, and is widely used in coal, metallurgy, mining and other industries. Based on the traditional circular vibrating screen technology, our company has developed a new generation of high-efficiency circular vibrating screens, which overcomes the small circular vibrating screen processing capacity, low screening efficiency, vibrator oil leakage, short bearing life, screen frame reliability Low disadvantage
The circular vibrating screen of our company is divided into two types: single shaft and double shaft. Light type, screen width below 2.4m is single shaft, heavy duty, screen width above 3.0m is double shaft
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Yag Heavy Duty Screenll

Circular Heavy Duty Screen

>>WRIK's YAg  circular Heavy Duty  vibrating screen is mainly used for granularity classification of loose materials, and is widely used in coal, metallurgy, mining and other industries. Based on the traditional circular vibrating screen technology, our company has developed a new generation of high-efficiency circular vibrating screens, which overcomes the small circular vibrating screen processing capacity, low screening efficiency, vibrator oil leakage, short bearing life, screen frame reliability Low disadvantage;

>>The circular vibrating screen of our company is divided into two types: single shaft and double shaft. Light type, screen width below 2.4m is single shaft, heavy duty, screen width above 3.0m is double shaft.


Excitor

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A. Vibrator

1.The vibrator is an eccentric shaft supported by spherical roller bearings at both ends and an eccentric block structure, so that the bearing is evenly stressed. A round tube beam type oil tank is added to make the screen frame more rigid.

2.Thin oil lubrication, long bearing life. The seal adopts our patented technology: the sealing ring cooperates with the high-precision mechanical seal to ensure that the lubricating oil does not leak.

3.YAQ vibrating screen is double exciter/Vibrator, synchronous toothed belt connection, good synchronization effect

4.The vibrator uses SKF or FAG vibrating screen special bearings.

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B.Eccentric Shaft 

1.The eccentric shaft is made of 45 # steel forgings, which are forged at one time through roughing, tempering, and DMG turning and milling complex machining centers, very long  service life

2.The bearing seat is processed by the American CNC vertical machining System,  and the positioning accuracy is 2μm, which improves the reliability and interchangeability of the product, and avoids the possibility of bearing damage due to low processing accuracy. 

3.The detection equipment is the American ADW three-coordinate detector.


C.Bearing 

1.Bearing parts, sealing rings, labyrinth rings and other disc parts are manufactured by CNC vertical machining centers imported from the United States. The positioning accuracy is 2 μm, which improves interchangeability and working reliability.

2.The vibrator shaft cover tube is positioned and processed by the pentahedral machining center at a time, and the processing positioning accuracy is 2μm. The processing of the two end faces and the holes is formed at a time, which ensures the flatness of the two end faces and the position of the holes. , No torsional vibration occurs.

3.The bracket is composed of multiple pieces of plates and profiles, each piece has a margin when cutting, and the machine removes the excess

4.The quantity is guaranteed to ensure the size and shape requirements. The gas shielded welding is used to increase the welding strength of the components, reduce the welding stress of the components, and ensure the geometric accuracy of the components, thereby ensuring the accuracy of the entire machine. 

5.The screen frame adopts high-strength HUCK bolt riveting assembly, the overall structural strength is high, ensuring the service life.

D. Side Plate 

1.The design adopts low alloy steel with a yield strength of 355 MPa and a tensile strength of 630 MPa, which are 1.45 times and 1.4 times that of conventional vibrating screen materials. The shape cutting and drilling of the side plates are completed by high-precision CNC cutting machines to ensure the shape and For the accuracy of drilling, the guard plate and reinforcement ribs are reasonably arranged in the area where the side plate is stressed, so as to effectively increase the strength of the side plate. The sieve plate bracket and the side plate are connected by cold riveting technology to avoid assembly welding stress; all the friction joints between the guard plate and the side plate are filled with soft polyurethane materials to prevent moisture or corrosion The metal is corroded.


Excitor


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Comparation on New Type High Performance Heavy Duty Screen with Traditional YA/Yk Type Screen 


Comparison of new shaft eccentric circular vibrating screen and old block eccentric circular vibrating screen


In the old-style circular vibrating screen, the exciter adopts the block eccentric form, and the eccentric blocks at both ends of the exciter are connected by a coupling to perform synchronous movement. The coupling connected to the eccentric block is a hollow steel tube, which has low strength and is easy to twist. After twisting, the phase angles of the eccentric blocks at both ends are inconsistent, causing torsional vibration of the equipment, resulting in a low life of the equipment side plate and coupling, etc. The failure rate is high.


As the eccentric block is connected by a coupling, the coupling is not an eccentric design, so no excitation force is generated, so the vibration strength of the circular vibrating screen using the block eccentric exciter is stronger than that of the circular vibrating screen using the shaft eccentric vibrator The force is small, and the influence of the vibration weight of the screen machine on the equipment must be considered when designing the screen box. Therefore, the weight of the old round vibrating screen is lighter than the new round vibrating screen, so the overall strength is poor, and the failure rate of the equipment is relatively new. The circular vibrating screen is much taller.

The new shaft eccentric circular vibrating screen is a product independently developed by Anzhong to improve the structural defects of the old block eccentric circular vibrating screen. The exciter is: shaft eccentricity plus block eccentricity, and the lubrication method is gear oil wet lubrication.


Bolts

 Advantages: 

A.  the lubrication method is advanced, the vibrator's working temperature is low, and the bearing is fully lubricated. At the same time, the vibrator is designed to be oil-free and maintenance-free. During the use of the vibrator, because the lubricant does not leak, the loss is usually very small, so The sieve does not need to be stopped for oil injection at ordinary times, which significantly improves the equipment operation rate, greatly reduces the workload of employees, and can increase economic benefits for the enterprise.

B. Since the eccentric blocks at both ends of the vibrator are connected by the eccentric shaft, the eccentric shaft also participates in the generation of eccentric force during work, so the exciting force of the new shaft eccentric exciter is larger than that of the old block eccentric exciter Therefore, when designing the screen machine, the parametric vibration weight of the screen machine is not a key consideration. The key consideration is the strength and reliability of the screen machine equipment. The service life is also much improved than the old one. The processing capacity is significantly increased, and the failure rate is significantly reduced.

 

C. eccentric shaft cover shaft cover tube, the overall rigidity of the screen machine is good, the torsion becomes smaller, the phase angle of the eccentric block connected to it is particularly stable, and the screen machine rarely produces torsional shock, so the screen machine runs smoothly, the cloth is uniform, and the screening efficiency Higher.


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