Specific gravity table for positive-pressure specific-gravity fine selecting machine

Abstract

The invention provides a specific gravity table for a positive-pressure specific-gravity fine selecting machine. The specific gravity table comprises a material hopper bottom plate, two side edge frames, a bottom-edge light impurity collecting tank and two side-edge light impurity collecting tanks, wherein the material hopper bottom plate is obliquely arranged with front part higher than rear part; the two side edge frames and the bottom-edge light impurity collecting tank surround the left side, the right side and the upper part of the rear bottom edge of the material hopper bottom plate to form a dustpan-shaped material hopper with an opening in the front end; uniformly distributed air holes are formed in the material hopper bottom plate; the two side-edge light impurity collecting tanksare located in the outer sides of the two side edge frames respectively; and side-edge light impurity dispersing holes communicating with the side-edge light impurity collecting tanks are formed in the side edge frames. Light impurities can be discharged from the left side, the right side and the rear side of the specific gravity table, and thus the fine selection quality and the fine selection efficiency are greatly improved.

Description

technical field [0001] The invention relates to the technical field of grain machinery, in particular to a specific gravity platform of a positive pressure specific gravity concentrator. Background technique [0002] Positive pressure specific gravity concentrator is a device for concentrating high-quality materials, inferior materials and impurities (specific gravity). The main structure of the equipment includes machine base, specific gravity table, blowing device, swing device, etc. The specific gravity table has an inclination angle, and the front is higher than the rear bottom in the longitudinal direction. The bottom plate of the specific gravity table is provided with evenly distributed small air holes, and the blowing device blows air upwards under the specific gravity table. The swing device uses the swing arm to drive the swing shaft of the specific gravity platform to make the specific gravity platform swing. When the equipment is working, the materials above th...

AI Technical Summary

Problems solved by technology

The materials in the specific gravity table are affected by the positive pressure wind force at the bottom, and the light miscellaneous materials spread around the upper layer. When the specific gravity table swings back and forth, the high-quality materials move forward, and the light miscellaneous materials move backward, and the side is easy to cause light Miscellaneous materials are accumulated on the side, and some light miscellaneous materials will flow along the sides of the specific gravity table to the high-quality material outlet at a high place, affecting the selection effect

In addition, the bottom plate of the specific gravity table of the positive pressure specific gravity concentrator in the prior art is mostly a flat plate with blowing holes, and the heavy materials in the lower layer are prone to slipping when climbing upwards, which reduces the efficiency of concentrating

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