Vibration screening equipment can be divided into: mining vibrating screen, light fine vibrating screen, experimental vibrating screen Mine vibrating screen can be divided into: efficient heavy sieve, self-center vibrating screen, oval vibrating screen, dehydration sieve, Round sieve, banana sieve, linear vibrating screen and other light fine vibrating screen can be divided into: rotary sieve, linear sieve, straight sieve, ultrasonic shaker, filter screen can refer to the vibrating screen series experimental vibrating screen: Boring-type vibrating screen machine, the standard test sieve, electric vibrating machine, please refer to the experimental equipment
According to the vibrating screen material trajectory can be divided into: linear motion trajectory points: linear vibrating screen (material in the screen surface to do forward linear motion) by circular motion trajectory points: round sieve (material on the screen surface to do round Shape movement) structure and advantages
It is widely used in plastics, abrasive, chemical, pharmaceutical, metallurgical building materials, grain, carbon, fertilizer and other industries.
Vibrating screen work, the two motor synchronous reverse rotation so that the exciter to produce reverse exciting force, forcing the sieve to drive the screen to do vertical movement, so that the material on the exciting force and cyclical forward throw a range, Thus completing the material screening operation. Suitable for quarry screening sand and gravel material, but also for coal preparation, mineral processing, building materials, power and chemical industries for product classification. The working part of the vibrating screen is fixed and the material is sieved along the working surface. Fixed grid sieves are more widely used in concentrates, and are generally used for pre-screening before shredding or shredding. It is simple in structure and easy to manufacture. Do not consume power, you can directly unload the ore on the screen surface. The main drawback is the low productivity, low screening efficiency, generally only 50-60%. Vibrating screen work surface is a horizontal arrangement of a root rolling axis, the axis of a plate, fine material from the roller or the gap between the plate through. The bulk material is driven by the roller to the one end and discharged from the end. Concentrators often use this sieve. The working part of the vibrating screen is cylindrical, the whole screen is rotated around the axis of the cylinder body, and the axis is not inclined in the general situation. The material is fed from one end of the cylinder and the fine grade material passes through the sieve of the cylindrical working surface and the coarse material is discharged from the other end of the cylinder. The speed of the cylinder screen is very low, work smoothly, the power balance is good. But its sieve is easy to plug, the screening efficiency is low, the working area is small, the productivity is low. The concentrator rarely uses it for screening equipment. The vibrating screen body is a plane swings or vibrations. According to its plane motion trajectory is divided into linear motion, circular motion, elliptical motion and complex movement. Shaking sieve and shaker are of this category. When the vibrating screen is working, the two motors are placed in reverse direction to cause the exciter to generate the reverse exciting force, forcing the sieve body to drive the screen to do the longitudinal movement, so that the material on the excitement and cyclical forward throw a range, Thus completing the material screening operation. The shaking sieve is a crank link mechanism as a transmission part. The motor through the belt and pulley drive eccentric shaft rotation, by connecting rod so that the body in a certain direction for reciprocating motion.
The direction of movement of the body perpendicular to the strut or suspension rod center line, due to the body of the swing movement, so that the material on the screen surface to a certain speed to the discharge end of the material at the same time be sifted. The shaking sieve has a higher productivity and sieving efficiency than the above sieves. The disadvantage is poor power balance. Now the concentrator rarely use it, and the structure is more reasonable to replace the shaker.
At present, large-scale screening tool is mainly based on vibrating screen, but in the course of the use of special noise, then the noise come from? Vibrating screen As the name suggests is through the vibration of the sieving work, this feature determines the normal work must be achieved through the vibration to achieve screening, but the vibration is the root cause of noise, the main noise source is derived from the side Plate, sieve plate, shock absorber bearings and vibrating sieve used in the work of the steel spring and other devices generated by the vibration, which is the sound of high sound sieve, the sound source and more complex reasons.