Tea-leaf wind selection device

Abstract

The invention relates to a wind separator for tea, which comprises a feeding hopper and a primary feeding vibrating groove which is positioned under the feeding hopper. The wind separator for the tea is characterized in that the upper side of a discharging end of the primary feeding vibrating groove is provided with a small negative-pressure gas channel, and the lower side of the discharging end of the primary feeding vibrating groove is provided with a secondary vibrating groove; the middle part of the secondary vibrating groove is provided with a funnel-shaped light yellow leaf collecting opening which can be lead to the bottom of the secondary vibrating groove; a triangular guide bevel is arranged between the funnel-shaped light yellow leaf collecting opening and the primary feeding vibrating groove; and the upper side of the discharging end of the secondary vibrating groove is provided with a large negative-pressure gas channel, and the lower side of the discharging end of the secondary vibrating groove is provided with an inclusion discharge opening which is close to the discharging end of the secondary vibrating groove and a discharge conveyor belt which is positioned on theoutside of the inclusion discharge opening in turn. The device not only has the function of simultaneously removing light yellow leaves and sandstone inclusion in the tea, but also greatly improves the wind separation efficiency and effectively reduces the error pick-up rate so as to guarantee the quality of the tea subjected to wind separation.

Description

technical field [0001] The invention relates to a tea air separation device. technical background [0002] The winnowing function is to use the difference in weight, volume, shape and size of the windshield surface between tea leaves and light yellow flakes, sand and stones, etc. The inclusions are separated to achieve the purpose of pure tea. At present, the common winnowing machines in production include suction type (the winnowing box is under negative pressure) and blowing type (the winnowing box is under positive pressure); their common features are the structure of single fan, single air duct, and the same height. Usually, the air flow is unstable due to the long air duct, which makes it difficult to distinguish the sand and yellow flakes in the tea leaves, resulting in a high mispicking rate of winnowing and difficult handling of semi-finished products, which directly affects the production efficiency of tea. Contents of the invention [0003] The object of the pr...

AI Technical Summary

Problems solved by technology

At present, the common winnowing machines in production include suction type (the winnowing box is negative pressure) and blowing type (the winnowing box is positive pressure); the common points are the structure of single fan, single air duct and the same height. Usually, the air flow is unstable due to the long air duct, which makes it difficult to distinguish the sand and yellow flakes in the tea leaves, resulting in a high mispicking rate of winnowing and difficulty in handling semi-finished products, which directly affects the production efficiency of tea leaves

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