Pneumatic conveying device capable of avoiding blocking

Abstract

The invention provides a pneumatic conveying device capable of avoiding blocking. The pneumatic conveying device comprises a storage bin. A filter pipe and a material conveying pipe are arranged at the bottom of the storage bin. A filter screen is arranged in the filter pipe. A butterfly valve is arranged in the material conveying pipe. The bottom of the material conveying pipe is connected with aconveying pipe, and a fan unit is arranged at one end of the conveying pipe. The conveying pipe comprises an outer pipe and an inner pipe, the outer pipe and the inner pipe are fixedly connected through a connecting portion, a clamp cavity is formed between the outer pipe and the inner pipe, and air blowing openings are formed in the wall of the inner pipe. The above technical scheme is adopted,and therefore the pneumatic conveying device has the beneficial effects that through cooperation of the filter pipe and the filter screen, powder is screened again, and the situation that pipelines are blocked by powder particles is avoided; and through the two-layer conveying pipe, the fan unit inflates the interiors of the inner pipe and the clamp cavity with air at the same time, powder is conveyed through air flow in the inner pipe, air flow in the clamp cavity blows towards the interior of the inner pipe through the air blowing openings, powder is prevented from adhering to the pipe wall,and the conveying pipe is prevented from being blocked.

Description

technical field [0001] The invention relates to the technical field of pneumatic conveying, in particular to a pneumatic conveying device for avoiding blockage. Background technique [0002] Pneumatic conveying, also known as airflow conveying, uses the energy of airflow to convey granular materials along the airflow direction in a closed pipeline. It is a specific application of fluidization technology; the pneumatic conveying device has a simple structure and is easy to operate. Vertical or oblique conveying, during the conveying process, physical operations such as heating, cooling, drying and air classification, etc. or some chemical operations can be carried out at the same time; The conveying of granular and powder materials is widely used in foundry, chemical, pharmaceutical and grain industries. [0003] However, during the use of the existing pneumatic conveying device, the powder is easy to accumulate at the bottom of the conveying pipe or adhere to the inner wall...

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a pneumatic conveying device that avoids clogging to solve the problem that during the use of the existing pneumatic conveying device proposed in the above-mentioned background technology, since the shunt flow is relatively small at the position close to the wall of the conveying pipe, the powder is easy to Accumulated at the bottom of the conveying pipe, or adhered to the inner wall of the conveying pipe, sticking and accumulating for a long time, it is easy to block the conveying pipe and other problems

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