Powder material conveying and stopping device

Abstract

The invention relates to a powder material conveying and stopping device used in powder material production and packaging equipment. The powder material conveying and stopping device comprises a net plate arranged on a vertical discharge port sheet of a conveying flow passage; densely distributed discharge small holes are formed in the net plate; and an inlet at the upper end of each discharge small hole is set into a circular conical surface of which the upper part is big and the lower part is small. The powder material conveying and stopping device has a simple structure and does not adopt complex action parts, and thus, the powder material conveying and stopping device is convenient to install and maintain and is easy to clean; and moreover, the upper end of each discharge small hole is provided with a conical surface structure, and thus, a bulging effect of powder materials is strengthened, so that the materials are more easily timely stopped when a supply pressure is reduced or disappears, the dripping leakage phenomenon is avoided, meanwhile, the discharge small holes adopting the conical surface structure are also difficult to block, and a suitable discharge hole size which not only can meet smooth supply of the materials, but also can enable the materials to be effectively stopped is easier to select according to different material properties.

Description

Technical field [0001] The invention relates to a powder material conveying cut-off device used in powder material production and packaging equipment. Background technique [0002] In the existing powder material production and packaging equipment, the cut-off device used for the vertical output and supply of the powder material generally adopts a mesh or a cut-off door. The cut-off device of the mesh structure is to install a mesh with dense small discharge holes on the vertical discharge port. The arching effect of the powdery material in the small hole is used to make the material stop output when the supply pressure decreases or disappears. The cut-off effect is very limited. For materials with good fluidity, the materials may be blocked or dripped. The cut-off device of the cut-off door structure has a good cut-off effect, but the complicated mechanical structure has a large number of sanitary dead corners, which are difficult to clean completely, and it is difficult to ens...

AI Technical Summary

Problems solved by technology

The cut-off device of the mesh structure is to place a mesh with densely distributed small discharge holes on the vertical discharge port, and use the arching effect of the powdery material on the small holes to make the material stop output when the supply pressure decreases or disappears, but Its cut-off effect is very limited. For materials with good fluidity, the materials will be blocked or dripping.

The cut-off device of the cut-off door structure has a good cut-off effect, but the complex mechanical structure has a large number of sanitary corners that are difficult to clean thoroughly, and it is difficult to ensure high hygienic requirements

Images