Vibration feeder structure is simple, easy to operate, no lubrication, low power consumption; can be evenly adjusted to the ore; it has been widely used. Generally used for loose material. According to the equipment performance requirements, the design should be designed to minimize the pressure on the tank body, according to the requirements of the factory, the effective discharge of the warehouse material shall not be greater than one quarter of the width of the material flow velocity control in the 6-18m / min For materials with large feeding capacity, the bar at the bottom of the silo should be set with a sufficient height to prevent the performance of the feeder. The block can not be fixed on the tank. In order to allow the silo to be discharged smoothly, the posterior wall of the silo is preferably designed to be 55-65 degrees.
Vibrating feeder originated in the middle of the last century, when the United States by the scientific researchers designed and manufactured a K-type mechanical reciprocating feeder (shown in Figure 1.1), it is through the connecting rod and eccentric shaft drive to work. As a result of the novel design of the mechanical feeder, so the advent of a wide range of attention, coupled with it can be workers from the heavy work of the liberation, greatly improving the productivity, therefore, in the mine production , Especially coal mines have been widely used. K-type mechanical feeder mainly by the bracket, vibration, outlet pipe, gate and roller and other components. Work, start the motor, the motor through the coupling, belt, etc. to drive the body on the roller for a straight reciprocating motion, the coal evenly unloaded to other equipment. The shortcomings of the feeder is simple structure, large energy consumption, high operating costs, heavy equipment, inconvenient transport in the conditions at the time, and the processing capacity is small and can not even feed. The advantages of durability, low maintenance costs, the installation of the required height of the chassis is low, and the composition of the material, the size of the size and moisture content and other physical properties are not demanding. However, with the rapid development of science and technology, mine mechanical intelligence has been greatly improved, this mechanical feeder has been unable to meet the needs of industrial production later. In this case, the electromagnetic vibration feeder came into being and developed rapidly. Electromagnetic vibration feeder is a dual-mass resonance type of dosing equipment, it can meet the requirements of continuous production, it has been widely used in mining, metallurgy, coal and other industries.
Electromagnetic vibration feeder working principle: Exciter solenoid current is a single-phase half-wave rectifier, when the coil is connected in the positive half-cycle after the current through the armature and the core will produce a pulse between the electromagnetic Force to attract each other, then the tank rearward movement, the main spring of the shock absorber deformation of a certain potential energy stored in the negative half-cycle coil without current through the electromagnetic force disappeared, the main spring release of energy, so that the armature and the core The reverse direction from the tank forward movement, so the electromagnetic vibration feeder to AC power frequency of 3000 times per minute reciprocating vibration, because the tank surface direction and the direction of the exciting force of the direction of a certain angle, so the groove The material in the body moves continuously along the parabolic trajectory. By adjusting the level of the rectifier voltage to control the size of the exciting force to achieve the purpose of controlling the amount of feed to the electromagnetic vibration feeder. Electromagnetic vibration feeder is powered by thyristor rectification. The size of the output voltage is directly related to the conduction angle of the thyristor. Therefore, when used, the output voltage is generally controlled by adjusting the size of the conduction angle. At the same time according to different use of the environment, you can choose a different signal to control the size of thyristor conduction angle in order to achieve the purpose of automatic feeding dosing machine.
It is suitable for feeding the massive, granular and powdery material from the silo or funnel to the receiving device continuously. It is mainly used in mining, metallurgy, coal, building materials, electric power, chemical industry, machinery, light industry, Food and other industries.
Vibration feeder simple structure, easy operation, no lubrication, low power consumption; can be evenly adjusted to the ore; it has been widely used. Generally used for loose material. According to the equipment performance requirements, the design should be designed to minimize the pressure on the tank body, according to the requirements of the factory, the effective discharge of the warehouse material shall not be greater than one quarter of the width of the material flow velocity control in the 6-18m / min For materials with large feeding capacity, the bar at the bottom of the silo should be set with a sufficient height to prevent the performance of the feeder. The block can not be fixed on the tank. In order to allow the silo to be discharged smoothly, the posterior wall of the silo is preferably designed to be 55-65 degrees.
(1) Adjust the inclination of the feeder to adjust the output, the feeder to the level of production when the base for the base, if the feeder front down, dip angle of 5-12 °, depending on the material, the output can be increased 30-50 %.
⑵ stop the adjustment of vibration motor eccentric block angle to reduce or increase the exciting force to achieve the output of the stepless adjustment, the adjustment method is as follows. When the movable eccentric block is erected, the eccentric force is the largest. When the movable eccentric block is installed in the opposite direction to the fixed eccentric block, the eccentric force is zero, and when the eccentric force is large, the exciting force is also large. Note that the adjustment position of the two vibrating motor eccentric blocks and the two sets of eccentric block positions of each motor should be the same.
⑴ feeding machine in the course of the operation should always check the amplitude, vibration motor current and motor surface temperature, requiring uniform amplitude before and after, not about swing, vibration motor current stability, such as abnormal circumstances, should immediately stop processing.
⑵ vibration motor bearing lubrication is the key to the normal work of the feeder, the use of the process should be regularly added to the bearing molybdenum disulfide 2 # grease, once every two months, high temperature season, once a month , Every six months to repair a motor, replace the internal bearings.