| CPC B02C 23/38 (2013.01) [B02C 19/005 (2013.01); B02C 21/00 (2013.01); B02C 23/02 (2013.01); B02C 23/30 (2013.01)] | 10 Claims |
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1. A same-cavity integrated vertical high-speed multistage superfine pulverizing device for walnut shells, comprising:
a double-channel sliding type feeding device and a same-cavity integrated vertical pulverizing device, wherein
the double-channel sliding type feeding device comprises a first spiral inclined chute and a second spiral inclined chute, which are oppositely arranged and configured to allow walnut shells to slide down through the first spiral inclined chute and the second spiral inclined chute into the same-cavity integrated vertical pulverizing device;
the same-cavity integrated vertical pulverizing device comprises a material lifting disc and a same-cavity integrated vertical pulverizing barrel, wherein the same-cavity integrated vertical pulverizing barrel is internally configured with a first-stage coarse crushing region, a second-stage fine crushing region, a third-stage pneumatic impact micro pulverizing region and a fourth-stage airflow mill superfine pulverizing region;
the material lifting disc is configured to uniformly lift the walnut shells that have slid down through the first spiral inclined chute and the second spiral inclined chute into a wedge-shaped gap of the first-stage coarse crushing region, wherein the first-stage coarse crushing region is configured to coarsely crush the walnut shells to produce coarsely crushed materials, and the second-stage fine crushing zone is configured to finely crush the coarsely crushed materials through a two-stage wedge-shaped direct-through gradually reducing gap to obtain finely crushed walnut shell particles;
the third-stage pneumatic impact micro pulverizing region is configured to perform high-speed collision on the finely crushed walnut shell particles, and the finely crushed walnut shell particles are subjected to collision and violent rubbing while being carried by a high-speed airflow for pulverizing; and
the fourth-stage airflow mill superfine pulverizing region is configured to perform microparticle grading is using arc-shaped blades, and to attract out microparticles conforming to a particle size condition using negative pressure attraction.
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10. A same-cavity integrated vertical high-speed multistage superfine pulverizing method for walnut shells, comprising:
lifting the walnut shells after being broken to remove kernels to a wedge-shaped gap of a first-stage coarse crushing region, so that the walnut shells receive high-speed collision, shearing and extrusion effects of fine-pitch longitudinal trapezoidal teeth of a stator and a rotor in a process of sliding down along the wedge-shaped gap when the size of the walnut shells is the same as the size of a certain position of the wedge-shaped gap, and the walnut shells are crushed into coarse particles to fall into a second-stage fine crushing region to realize coarse crushing;
enabling the coarsely crushed walnut shell particles to slide down along an inner wall since the second-stage fine crushing region is a multistage wedge-shaped direct-through gradually reducing gap, along with gradual reduction of the gap, enabling the coarse particles to receive the high-speed shearing and extrusion effects of fine-pitch transverse sharp patterned teeth on a stator and a rotor, and further crushing the coarse particles into fine particles;
sliding the fine particles to a third-stage pneumatic impact micro pulverizing region, and enabling the fine particles to move at a high speed through receiving the strong-force carrying effect of a supersonic airflow, so that the walnut shell fine particles violently rub and collide with each other in the process; enabling the particles to receive strong collision by spiral gratings rotating around a lower main shaft at a high speed during high-speed drifting, rebounding the collided particles to a rough barrel wall for repeated collision and rubbing, finally pulverizing the particles into microparticles, and enabling the microparticles to enter a fourth-stage airflow mill superfine pulverizing region along with an upward spiral airflow; and
enabling the walnut shell microparticles entering the fourth-stage airflow mill superfine pulverizing region to receive high-speed collision and rubbing in a subsonic airflow mill to be further pulverized into superfine powder ascending along with the airflow, and attracting out powder particles meeting a particle size requirement through negative pressure attraction greater than centrifugal force through screening by grading blades.
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