Pulse crusher

Abstract

The invention discloses a pulse crusher in the field of material crushing devices, which comprises a shell, wherein the upper part of the shell is provided with a feed opening, a rotor is arranged in the shell, a sieving plate is arranged on the periphery of the rotor in a half surrounded mode to form a crushing room, and the upper part of the sieving plate is connected with the lower side of the feed opening transitionally; and the upper side of the extended periphery of the sieving plate in the feed opening is provided with a plurality of nozzles blowing towards a circulation layer directly. When the pulse crusher works, pulse airflow can generate instant impact force to impact large particles directly so that the large particles get into a beating area of the rotor, and small particle materials have more sifting opportunities; and the pulse airflow can improve the sifting speed of the materials, and the pulse air flow is ensured to have excellent impact effect. The pulse crusher breaks through the inherent prejudice in the prior art and breaks the circulation layer in the feed opening, and the breaking effect is more direct and efficient, thus the pulse crusher can promote the sifting of the small particle materials and the re-striking and the re-crushing of the large particle materials, and improve the working efficiency of the crusher.

Description

technical field [0001] The invention relates to a mechanical device for crushing grain, feed, etc., in particular to a pulverizer. Background technique [0002] In the prior art, the pulverizer used for grain and feed mainly includes a shell, the upper part of the shell is provided with a feeding port, a rotor is arranged inside the shell, and a sieve is arranged half around the outer periphery of the rotor to form a crushing chamber. The upper part of the sheet is transitionally connected with the lower side of the feed inlet. When the device is working, the material enters the crushing chamber from the feed inlet on the upper part of the sieve, and the rotor rotates at a high speed to crush the material several times. The material makes a high-speed circular motion in the crushing chamber to form a material flow layer rotating along the screen surface. The material flow layer is called the circulation layer. Under the action of centrifugal force, the large particles in th...

AI Technical Summary

Problems solved by technology

Its shortcoming is that since the blowing is from the outside of the sieve and is perpendicular to the sieve, on the one hand, due to the blockage of the sieve, the airflow cannot pass through the sieve to the circulation layer unimpeded, but mainly for local blockage. The large particle material in the sieve hole forms a blowing effect to make it break away from the sieve, its blowing efficiency is low, and the damage effect on the circulation layer is relatively poor; on the other hand, the airflow in the crushing chamber has a tendency to pass through the sieve, Counters the pulse flow, reducing the effect of the pulse flow

Images