Hammer type dynamically and cyclically screening-crushing machine

Abstract

The invention discloses a hammer type dynamically and cyclically screening-crushing machine, belonging to the field of material crushing equipment. The hammer type dynamically and cyclically screening-crushing machine comprises a rotatable hammer type rotor group, a feeding port, a discharging port, and a rotatable screening roller, wherein the inner wall of the screening roller is fixedly provided with a lifting plate used for pushing up a material; the hammer type rotor group is arranged in the screening roller along an axial direction; the feeding port communicates with the interior of thescreening roller; and the discharging port communicates with the outer wall of the screening roller. According to the invention, a material is dynamically and cyclically crushed in the screening roller and is discharged only when the granularity of the material is qualified, and cyclic crushing realizes crushing of the material multiple times, so high material crushing efficiency of machine is guaranteed; and a conveying speed can be artificially controlled, and material output and output granule distribution are also completely artificially controlled and are large in adjustment range. Compared with the prior art, the hammer type dynamically and cyclically screening-crushing machine of the invention has the advantages that discharge granularity is no longer determined by a gap between a hammer head and a sieve plate, so the problem that the hammer head and the sieve plate are prone to wearing and are frequently replaced is overcome.

Description

technical field [0001] The invention relates to a crushing equipment for finely crushing coarse grain materials, especially a crusher capable of continuously pushing up, circulatingly crushing, and screening materials during the crushing process. It is mainly used for finely crushing coal particles in the power industry, and can also be used for Crushing of materials in other industries such as mining, metallurgy, and chemical industry. Background technique [0002] In the current industrial production, the crushing process of raw coal mainly adopts hammer crusher and reversible hammer crusher to crush materials. In the two types of crushers, the high-speed rotating hammer head and the sieve plate form a crushing cavity. After entering the crushing cavity, the material is impacted and crushed by the hammer head, and the output particle size is controlled by the gap between the hammer head and the sieve plate. Therefore, in order to obtain a smaller discharge particle size, ...

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Problems solved by technology

[0003] In order to overcome the disadvantages of the hammer head and the sieve plate in the hammer crusher and the reversible hammer crusher that wear quickly and the sieve holes are easily blocked, and ensure the qualified rate of granulation of the equipment, the present invention provides a hammer-type dynamic cycle screening and crushing Machine, so that the material can be crushed circularly, and will not fall out of the discharge port until the particle size is qualified, so that the particle size of the discharge is no longer determined by the gap between the hammer head and the sieve plate, thereby reducing the size of the hammer head and the sieve plate Even if it enters superhard materials (such as iron blocks), it can reduce the damage to the hammer head and sieve plate

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