Air-locking feeder of moisture-containing raw material

Abstract

The invention discloses a moisture-containing raw material air-locking feeder with an air locking function, which both has the air locking function and a binding material cleaning function. The air-locking feeder of the moisture-containing raw material comprises a shell with a feed port and a discharge port, and a feeding impeller arranged in the shell, the feeding impeller is provided with a plurality of uniformly distributed concave feeding regions, the inner wall of the shell is provided with a circular arc surface structure, a circle centre of the circular arc surface structure is coincided with the axial lead of the feeding impeller, the distance between the outer circumferential surface of the feeding impeller and the centre of the feeding impeller is D1, the distance D1 is matched with the radius of the circular arc surface structure, the two sides of the feeding impeller are matched on the inner wall of the shell, a binding material cleaning device used for preventing the moisture-containing raw material from being adhered at the concave feeding regions is arranged in the shell, the feeding impeller is in transmission connection with a graduation locating mechanism situated at the outside of the shell, and the graduation locating mechanism is in transmission connection with a power driving mechanism. The air-locking feeder of the moisture-containing raw material, disclosed by the invention, can both guarantee the heat efficiency of a successive drying procedure and effectively prevent the feeding impeller from adhering materials.

Description

technical field [0001] The invention relates to a feeder, in particular to an air-lock feeder for wet raw materials with an air-lock function. Background technique [0002] The moisture content of wet raw materials is generally 6-20%. The raw materials between the flow state and dry state materials have no flow conveying characteristics and have high adhesion. This type of raw material is usually dried in a production device under negative pressure, and it is required to prevent the entry of cold air that reduces thermal efficiency when feeding, that is, there is a requirement for air-lock feeding. The no-flow conveying characteristics determine that pumping cannot be used; the high adhesion determines that feeding equipment with air lock characteristics cannot be used, such as impeller feeders. [0003] There are two main types of air-lock feeding equipment used in the current wet raw material drying production line: one is the feeding equipment that adopts double-screw or...

AI Technical Summary

Problems solved by technology

The screw-propelled feeding equipment has the advantages of simplicity and economy, but it does not have the function of cleaning the bonding material, the reliability and accuracy of the feeding is poor, and it cannot be used when the feeding material is seriously affected by bonding, and it must be cleaned manually

Because Smith products have the functions of constant volume feeding and variable volume cleaning, the feeding is accurate and the use is reliable; however, the product has problems such as bulky, complex structure, high manufacturing requirements and expensive equipment, which limits the use of this product in related industries in my country. Promoted application of

The reality is that most of the relatively large wet raw material drying production lines in China use spiral air-lock feeding equipment with poor reliability and accuracy, and most small and medium-sized production lines do not use air-lock feeding equipment.

The thermal efficiency is reduced by 20-50% in the wet raw material drying production line without the use of air lock feeding equipment

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