Negative pressure feeding device for dry method granulator

Abstract

The invention discloses a negative pressure feeding device for a dry method granulator. The negative pressure feeding device for the dry method granulator comprises a material storage cylinder and is characterized in that the interior of the material storage cylinder is provided with closed space; the bottom of the material storage cylinder is provided with a connecting pipe component; the connecting pipe component comprises an external connecting pipe, an internal connecting pipe, a powder blocking disc and a powder blocking cover; the external connecting pipe is fixedly installed at the bottom outside the material storage cylinder; the internal connecting pipe is inserted inside the external connecting pipe; the center of the internal connecting pipe is provided with a central pipe hole; the periphery of the external wall of the internal connecting pipe is provided with an air inlet channel; the powder blocking disc is arranged right above a central pipe hole inlet and the air inlet channel; the powder blocking disc enables interiors of the central pipe hole and the material storage cylinder to be communicated through a flow hole which is formed in the powder blocking disc after seals the central pipe hole; the powder blocking cover blocks above the flow hole and distance is formed between the powder blocking cover and the flow hole; the material storage cylinder is arranged in a left and right swinging mode; a sensor is installed at the bottom position or at the left or the right of the material storage cylinder. The negative pressure feeding device for the dry method granulator is applicable to negative pressure feeding and conveying of various powder and guarantees a smooth material conveying process, no-blocking and high material conveying efficiency.

Description

[0001] technical field [0002] The invention relates to a dry granulator, in particular to a negative pressure feeding device of the dry granulator. Background technique [0003] The dry granulator is used in the production of granular products. The first production process of the dry granulator is to carry out negative pressure feeding and conveying of the powder in the storage tank. At present, there are many ways to convey powder under negative pressure, but there are defects in varying degrees that the feeding process is not smooth, easy to block the material, and the feeding efficiency is low. In order to solve the above technical problems, the applicant applied for a utility model patent with the patent number 200820167664.7 and the patent name "Negative Pressure Airflow Conveying and Loading Equipment" on November 11, 2008. Set the mixing core to adjust the solid-gas ratio of powder and air to improve the feeding efficiency. Set the oscillator to eliminate cloggi...

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Problems solved by technology

For barrels Generally speaking, the setting of the mixing core can achieve the purpose of improving the feeding efficiency, but it is undeniable that for those powders with poor fluidity, the inside of the powder that is freely accumulated around the mixing core is due to adhesion The effect of coagulation and coagulation is easy to produce the phenomenon of "arch bridge", forming an arch bridge-shaped space and increasing the void ratio. Therefore, once the arch bridge-shaped space is continuously formed, it is very easy to produce uninterrupted material blocking, and the feeding efficiency is immediately affected. It has a great impact, and when it is serious, it will cause the paralysis of the feeding work, even if the material barrel There are stirring paddles inside, but the stirring effect is far away from the position where the arch bridge is formed, and it has no obvious effect on the elimination of the arch bridge

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