Description

The hammer crusher with the feature of big crushing ratio, high production and uniform granularity is one of main machine for fine crushing limestone, coal or other brittle materials with medium or below medium hardness which is used in the industries of metallurgy, building material, chemical works and hydropower. One-phase hammer crusher can crush the material fed from granularity of 1100mm into 20mm or below at a time so that the traditional crusher with two-phases or three phases will be substituted this kind of one-phase so as to simplify the technique and save the investment on machine and also reduce the manufacturing cost.

The hammer crusher can be classified as reversible type or irreversible type wherein the reversible hammer crusher has reversible rotator which is generally used in fine crushing and the irreversible hammer crusher has the irreversible rotator which is generally used in intermediate crushing. One-phase hammer crusher is irreversible type.

The ordinary hammer crusher is mainly composed of support frame, rotator, sieve, impact plate and regulator. The motor drives the rotator through the coupling to run at high speed, the ore fed is impacted by the hammer installed on the rotator and broken into small piece, from which the ore crushed obtain the kinetic energy and rush at high speed to the impact plate and sieve inside the support frame, concurrently the impact also happens between mutual ores to reach the crushing many times. If the size of ore crushed is less than the sieve pore those will be discharged but some big ones will be impacted, squeezed and grinded by the hammer so as to be crushed again and be extruded out through the sieve pore by the hammer.

One-phase crusher is mainly composed of support frame, rotator, feed roller, grate, hydraulic starter and basic parts. The main motor directly drives the rotator with flywheels through the coupling. The ore is delivered to the crusher feeding mouth with the heavy plate feeder and is uniformly separated on the conveying belt then the big size of ore falls on the shockproof feeding roller with rubber support, these two roller have individual rotating speeds (the back one is faster than the front) so as to protect from the ore wedging into two rollers, in which some of fine material directly fall between two rollers and other ore will be sent into crushing area, afterwards the ore will be impacted and thrown up by the high speed running hammer installed on the rotator then these ore at high speed collides with the counter-impact plate or attached themselves in the support frame chamber to crush and break, and which is brought into the crushing plate and grate to be further crushed until it reach the required size and is discharged from the grate gap to be delivered by the belt conveyer. The safety device is equipped to prevent machine from damaging caused by the mixed iron foreign matter, whose openness is controlled by heavy bob. Applied to the different requirements of tube mill and vertical mill one phase hammer crusher has two kinds of grate for customer reference. The hydraulic start-up support is settled for maintenance and to shorten the stop time.