Mining vibrating screen can be divided into: high-efficiency heavy-duty screen, self-centering vibrating screen, elliptical vibrating screen, dewatering screen, circular vibrating screen, banana screen, linear vibrating screen, etc.
Lightweight fine vibrating screen can be divided into: rotary vibrating screen, linear screen, straight row screen, ultrasonic vibrating screen, filter screen, etc. Please refer to the vibrating screen series
Experimental vibrating screen: slapping screen, top-strike vibrating screen machine, standard inspection screen, electric vibrating screen machine, etc. Please refer to the experimental equipment
According to the material running track of the vibrating screen, it can be divided into:
According to the trajectory of linear motion: linear vibrating screen (material moves forward in a straight line on the screen surface)
According to the circular motion trajectory: circular vibrating screen (materials do circular motion on the screen surface) structure and advantages
According to the reciprocating motion trajectory: fine screening machine (the material moves forward on the screen surface in a reciprocating motion)
Vibrating screen is mainly divided into linear vibrating screen, circular vibrating screen and high frequency vibrating screen. According to the type of vibrator, vibrating screen can be divided into uniaxial vibrating screen and biaxial vibrating screen. The uniaxial vibrating screen uses a single unbalanced heavy excitation to vibrate the screen box, the screen surface is inclined, and the motion trajectory of the screen box is generally circular or elliptical. The dual-axis vibrating screen is a double-unbalanced re-excitation using synchronous anisotropic rotation, the screen surface is horizontal or gently inclined, and the motion trajectory of the screen box is a straight line. Vibrating screens include inertial vibrating screens, eccentric vibrating screens, self-centering vibrating screens and electromagnetic vibrating screens.
Linear vibrating screen
Vibrating screen is a screening machine widely used in coal and other industries for classification, washing, dehydration and de-intermediation of materials. Among them, linear vibrating screen has been widely used for its advantages of high production efficiency, good classification effect and convenient maintenance. During the working process, the dynamic performance of the vibrating screen directly affects the screening efficiency and service life. The vibrating screen uses the vibration of the vibrating motor as the vibration source, so that the material is thrown up on the screen and moves forward in a straight line. The oversize and undersize are discharged from their respective outlets. Linear vibrating screen (linear screen) has the advantages of stability and reliability, low consumption, low noise, long life, stable vibration shape and high screening efficiency. It is a new type of high-efficiency screening equipment, widely used in mining, coal, smelting, building materials , refractory materials, light industry, chemical industry and other industries.
Circular vibrating screen
Circular vibrating screen (circular vibrating screen) is a new type of multi-layer and high-efficiency vibrating screen that performs circular motion. The circular vibrating screen adopts a cylindrical eccentric shaft exciter and an eccentric block to adjust the amplitude. The material screen has a long flow line and a variety of screening specifications. It has reliable structure, strong excitation force, high screening efficiency, low vibration noise, sturdy and durable, and maintenance. Convenient and safe to use, circular vibrating screens are widely used in product grading in mining, building materials, transportation, energy, chemical and other industries. According to material products and user requirements, high-manganese steel woven screen, punching screen and rubber screen can be used. There are two types of screen, single-layer and double-layer. This series of circular vibrating screens are seat mounted. The adjustment of the inclination angle of the screen surface can be realized by changing the height of the spring support.
The elliptical screen is a vibrating screen with an elliptical motion trajectory, which has the advantages of high efficiency, high screening accuracy, and a wide range of applications. Compared with ordinary screen machines of the same specification, it has larger processing capacity and higher screening efficiency. It is suitable for solvent and cold sinter screening in metallurgical industry, ore classification in mining industry, classification and dehydration and deintermediation in coal industry. It is an ideal substitute for the existing large-scale vibrating screen and imported products. TES three-axis elliptical vibrating screen is widely used in quarry, sand and gravel screening operations, and can also be used for product classification in coal preparation, mineral processing, building materials, construction, power and chemical industries.
Screening principle: The power is transmitted from the motor to the driving shaft of the exciter and the gear vibrator (speed ratio is 1) through the V-belt, so that the three shafts rotate at the same speed and generate the exciting force. The exciter is connected with the high-strength bolts of the screen box. , which produces an elliptical motion. The material moves elliptically on the screen surface with the high speed of the screen machine, quickly stratifies, penetrates the screen, moves forward, and finally completes the classification of the material.
The obvious advantages of TES series triaxial oval screen
The three-axis drive can make the screen machine produce an ideal elliptical motion. It has the advantages of a circular vibrating screen and a linear vibrating screen, and the elliptical trajectory and amplitude are adjustable. The vibration trajectory can be selected according to the actual material conditions, and it is more difficult to screen materials. have an advantage;
The three-axis drive forces synchronous excitation, which can make the screening machine obtain a stable working state, which is especially beneficial for the screening that requires a large processing capacity;
The three-axis drive improves the stress state of the screen frame, reduces the load of a single bearing, the side plate is evenly stressed, reduces the stress concentration point, improves the stress condition of the screen frame, and improves the reliability and life of the screen machine. The large-scale machine has laid a theoretical foundation.
Due to its horizontal installation, the height of the unit is effectively reduced, and it can well meet the needs of large and medium-sized mobile screening units.
The bearing is lubricated with thin oil, which effectively reduces the bearing temperature and improves the service life;
With the same screening area, the output of the elliptical vibrating screen can be increased by 1.3-2 times.
The thin oil vibrating screen has large processing capacity and high screening efficiency; the vibrator adopts the bearing thin oil lubrication, and the external block eccentric structure. It has the characteristics of large exciting force, small bearing load, low temperature and low noise (the temperature rise of the bearing is less than 35°); the vibrator is disassembled and assembled as a whole, maintenance and replacement are convenient, and the maintenance cycle is greatly shortened (replacement of the vibrator only takes 1~ 2 hours); the side plate of the screen machine adopts the whole plate cold work, no welding, high strength and long service life. The connection between the beam and the side plate adopts torsional shear high-strength bolt connection, no welding, and the beam is easy to replace; the screen machine adopts rubber spring to reduce vibration, which has lower noise and longer life than metal springs, and the vibration area is stable across the common vibration area. The dynamic load of the fulcrum is small, etc.; the connection between the motor and the exciter adopts a flexible coupling, which has the advantages of long service life and small impact on the motor.
This screen machine series is widely used in grading operations in coal, metallurgy, hydropower, mining, building materials, chemical industry, electric power, transportation, port and other industries.
Post time: Oct-17-2022