The vibrating feeder is classified into electromagnetic vibration and mechanical vibration according to its vibration source; according to the vibration force generated by the vibration device and the feeder slot, there are two kinds of resonances: direct connection vibration and indirect spring connection. Electromagnetic vibrating feeder has simple structure, convenient operation, no relative moving parts, no lubrication, easy maintenance; equipment works under low critical resonance state, low power consumption; controlled by thyristor, it can be conveniently and evenly Adjust the feeding amount; the material jumps forward in the tank body, and the wear of the tank body is small; the vibration force of the building is small, and it is easy to hang and install. Since it has the above advantages, it has been widely used. However, the amplitude of the device is small, so the viscous wet powder material will produce a knot image in the vibrating trough, and in severe cases, the silo port will be completely blocked. In addition, the humidity and particle size of the material have a significant impact on the throughput of the feeder, as shown in Figures 2 and 3. (2) Vibration mining machine Vibration drawing machine used in recent years to put better equipment mine ore, has begun to promote the use of mineral processing plants. There are two types of installations for vibrating and concentrating machines: seated and suspended. There are two types of connection between the vibrator and the tank: direct connection and indirect spring connection. The vibrator is composed of a vibration motor and an eccentric body that it drives. The eccentric body can be placed directly on the shaft of the motor. FIG 4 is a pneumatic chute 750 × 750 with A vibration broken arch ore machine, developed by the Hengdian metallurgical plant machinery, mounted at Lingxiang iron ore powder ore bin 10 ~ 0 mm, in order to replace the original set of , achieved remarkable results. Grain Dryer,Portable Grain Dryer,Grain Dryer Machine,Rice Dryer Machine Hunan Nongyou Machinery Group CO.,LTD , https://www.ricemill.nl
When the feeder is in operation, the vibrating trough is substantially driven by a force that approximates a sine wave at an angle to the vibrating trough. The running speed of the material on the vibrating trough is related to the vibration frequency, amplitude and the inclination of the trough, and is generally 0.15 to 0.4 m/sec. The vibration frequency is generally 600 to 7200 beats / min. The amplitude is generally 0.1 to 30 mm.
Increasing the downward inclination of the vibrating trough can increase its production capacity. The inclination angle is between -12 and +12°. Each change of 1° will change the yield by about 3%.
The bottom of the vibrating feeder can also be made into a sieve type for the purpose of both feeding and sieving. In this case, the degree of wear of the conveyor belt of the belt conveyor can be reduced.
(1) Electromagnetic vibrating feeder The electromagnetic vibrating feeder is a resonant vibrating feeder. Springs in which the electromagnetic vibrator is coupled to the tank body include a leaf spring, a coil spring, and a rubber spring. The first two types of electromagnetic vibrating feeders, China has a series of products. Figure 1 shows a large sample of the domestic DZL electromagnetic vibrating feeder. The feeder has a vibration frequency of 3000 beats per minute and an amplitude of 1.5 mm (single amplitude of 0.75 mm). 
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