Negative-pressure dust treatment system for bulk grain unloading pit

Abstract

The invention discloses a negative-pressure dust treatment system for a bulk grain unloading pit. The negative-pressure dust treatment system for the bulk grain unloading pit comprises the unloading pit, a side suction hood, a ventilation pipeline, a bucket elevator and a main air suction hood, wherein the ventilation pipeline communicates with an air outlet in the top of the side suction hood, the main air suction hood is located in front of the side air suction hood, the main air suction hood comprises a ground air suction pipe network and a side grid connected with the rear side edge of the ground air suction pipe network, the side grid communicates with an air inlet in the front side face of the side air suction hood, and the ground air suction pipe network communicates with an air inlet in the bottom of the side air suction hood. The ground main air suction hood and the side air suction hood are arranged, dust generated by air convection on the ground surface and dust generated by movement in the grain unloading pit during grain unloading can be collected at the same time, the dust removal amount is larger, and the dust removal effect meets the environment-friendly requirement compared with a traditional dust removal device.

Description

technical field [0001] The invention belongs to the technical field of grain processing and dust removal, and in particular relates to a negative pressure dust treatment system for bulk grain unloading pits. Background technique [0002] Raw grain receiving is the first process of grain processing. With the development of modern grain logistics, bulk unloading of grain by car has become the main way of raw grain receiving. A large amount of dust will be generated when the car is unloaded in bulk, and corresponding dust removal devices must be equipped to meet environmental protection requirements. The traditional bulk grain unloading pit dust removal method is to install a side suction hood outside the grain unloading pit to absorb the dust generated after the raw grain collides with the surface fence. However, during the unloading process of bulk grain, the drop of raw grain above the ground is relatively short, and dust is mainly generated due to air convection in this se...

AI Technical Summary

Problems solved by technology

And because the surface grid will form a material seal in some areas due to the dumping of materials during unloading, so that a large amount of dust generated after the raw grain enters the grain unloading pit cannot overflow through the surface grid or the overflow speed is too fast. It is difficult for the suction hood to collect the internal dust, and the dust removal effect cannot meet the environmental protection requirements

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