Description

The analyzer includes: a vibration drive, a sifting part (consisting of a set of sieves, a tray and a lid) and a device for fastening the sieves. The vibration drive includes: a housing, a platform, springs, unbalances and electric motors with pulleys. The platform is made in the form of a round plate and is installed on the body through springs. At the lower end of the platform, brackets with unbalanced vibrators mounted in them are welded. The vibrator axes are placed at an angle to the platform and intersect in space. The torque from the electric motors is transmitted to the vibrators through drive belts. When the vibration drive is connected to the network, electric motors rotate unbalanced vibrators, which give the platform (with elements installed on it) helical reciprocating vibrations at the rotation frequency of the vibrators. This type of oscillation, in the case of installing sieves, ensures the movement of particles of the scattered material in a spiral from the center to the periphery of the sieve along the sifting surface. The amplitude of the oscillations depends on the mass of the technological equipment elements fixed on the platform and the mass of the loaded material.
Operating procedure. The material to be sieved is loaded onto the upper sieve, after which the set of sieves is fixed on the vibrating drive platform using a VCS. When the analyzer is connected to the network, the vibration drive imparts reciprocating helical vibrations to the sieves fixed on the platform, which ensures a spiral trajectory of the particle along the sifting surface — from the center to the periphery. In this case, the path traversed by the particles significantly exceeds the diameter of the sieve, which increases the efficiency of sieving. The oscillation frequency is equal to the rotation frequency of the electric motors, and the amplitude of the oscillations depends on the number and mass of sieves with the sifted material. Particles larger than the holes in the sieving element of the sieve (over-size product) remain on the sieve, while smaller particles (under-size product) spill onto the sieves located below. Particles smaller than the openings of the lower sieve fall onto the tray.
Specifications:
Total payload weight on the platform, kg, no more than 10
Platform vibration amplitude, mm, in the range no less than 0.25 to 0.75
Platform oscillation frequency, no less, number/min 1500
Supply voltage, frequency 50 Hz, V 220
Total power of electric motors, not less, W 50
Overall dimensions, mm (Length x Width x Height), not less than 360x345x190
Weight with built-in control system or Control Panel, no less, kg 19
Sieve diameter, not less, mm 200
Number of sieves, pcs., no more than 8
Mesh cell size, no more, mm 10.0
Size of holes in perforated fabric, no more than, mm 125.0
Oscillation frequency, no less, number/min 1500
Diameter, mm, no more than 390
Width, mm, no more than 350
Height, mm, no more than 760
Weight, kg, no more than 26