Hammer crusher common faults and the treatment

Hammer crusher common faults and the treatment

Hammer crusher Introduction and purpose: hammer crusher for crushing medium hardness and brittle materials, broken materials as coal, cement, gypsum, alum, brick, tile, limestone, etc., the compressive strength of the materials does not exceed 300 MPa, the humidity is not greater than 15%, at present, hammer crusher is widely used as the ideal product of the artificial sand.
    Hammer crusher works: the main working part of the hammer crusher rotor is a hammer (also known as hammer). Rotor consists of the spindle, disk, pin and hammer. The motor drives the rotor in the crushing cavity high-speed rotation. Material from the upper feed port into the machine, high-speed movement of the hammer blow, impact, shear, abrasive and grinding. The lower part of the rotor, has a sieve, crush the grain size smaller than the mesh size in the material is discharged through the sieve is greater than the sieve size of coarse material retention continue to be a hammer blow and shear on the sieve, and finally through The sieve discharged outside the machine.
    Hammer crusher failure and exclusion:
    1, Bearing overheat
    Reasons: lack of grease; the grease is too much; grease is dirty and deterioration; bearing damage.
    Remedy: filling the right amount of grease; 50% of the volume of the bearing greases for its space; cleaning bearings; replace grease; replace the bearings.
    2, a material particle size is too large
 The reason: the hammer wear and tear is too large; sieve fracture.
    Remedy: Replace the hammer; replace the sieve.
    3, reduced production
    Reasons: the sieve gap blockage; feeding uneven.
    Remedy: Parking, clearing blockages in the sieve gap; adjust feeding agencies.
    4, the flexible coupling percussion
    The reason: pin loosening; elastic ring wear;
    Remedy: stop and tighten the pin nut; replace the elastic ring.
    5, the machine internally generated percussion
    The reason: non-detritus into the apparatus; liner fasteners relaxation, the hammer impact on the liner; hammer or other parts breaking.
    Remedy: parking, cleaning up the crushing chamber; check the liner fastening and the gap between the hammer and the sieve; replacement of the fracture parts.
    6, the machine vibration
    Reasons: to replace the hammer wear and tear due to cone so that the rotor static balance of sub-requirements; hammerhead broken rotor imbalance; pin bending, broken; the cracks of the triangular plate or dish garden; bolt loose.
    Remedy: Remove the hammer, selected by weight of the hammer, the total weight of each hammer shaft hammer with its equal to the relative total weight of the hammer shaft hammer, static balance to meet the requirements; replace the hammer; replace the pin; welding repair or replacement; fastening bolt.
 

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