Pneumatic separator with air flow equalizing device

Abstract

The invention relates to agricultural engineering and can be used for cleaning and sorting seeds of grain, oilseeds and other crops. A pneumatic separator with a device for equalizing the air flow includes a receiving bin 1 with a damper 2 for feeding the grain heap into the separation zone, a device for forming directed air flows 3, a static pressure chamber 4 in which a device for equalizing the air flow 5 is installed behind an axial fan 6, a separation channel 7 equipped with fraction receivers 8 (Fig. 1). The essence of the invention is that the pneumatic separator is equipped with a device for equalizing the air flow, ensuring a uniform distribution of the flow in the static pressure chamber, which contributes to the formation of a cascade of flat jets from slot gaps with the same air flow speed across the width of the separation channel, in the device for forming directed air flows, the slot gaps and straight wedges are made of the same size, This results in equalization of the air flow velocity from the slotted gaps across the separation channel's height. The proposed design achieves the stated technical result, namely, improved separation of bulk mixtures into fractions during pneumatic separation of bulk materials by reducing the unevenness of air flow velocity from the device's slotted gaps across the width and height of the separation channel.