Compulsory feeder used for biomass solid fuel molding machine

Abstract

The present invention discloses a compulsory feeder used for a biomass solid fuel molding machine, which pertains to the technical field of agricultural machinery. The technical proposal comprises a compulsory feeding shaft (4) and a horizontal spiral conveying shaft (3). The compulsory feeder is characterized in that: the compulsory feeding shaft (4) is moveably connected with the horizontal spiral conveying shaft (3) by an inner joint (8) and the surface is an arc surface (6) which is low in the middle and high in the two sides so as to prevent dropped straws from stacking at the tail end of the shaft (4). A circularly distributed scraper (5) is welded or casted on the arc surface (6) and has a certain distance horizontally, thus effectively avoiding the dropped straw from enwinding the shaft (4) and increasing the dropping speed of materials. The compulsory feeder effectively solves the phenomena of enwinding and stacking of biomass materials during the transmitting and dropping processes and increases the conveying efficiency. The exchangeable compulsory feeding shaft can be applicable to a plurality of types of raw materials and can be easily exchanged simultaneously after being worn and malfunction. The compulsory feeder provides technical guarantee for the smooth feeding of the biomass material solid fuel molding machine.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery, and relates to a biomass material conveying device, in particular to a forced feeder applied to a biomass solid fuel molding machine for processing crop stalks, forestry residues and the like. Background technique [0002] my country is rich in crop straw resources and forest resources. According to statistics, the annual output of crops is about 600 million tons per year, equivalent to about 300 million tons of standard coal, and the forestry residue is about 150 million tons. Biomass solid briquette fuel technology is a high-tech technology that dries and pulverizes the original dispersed biomass without a certain shape into various briquettes with a certain shape and high density under the action of a certain temperature and pressure. It is 6-8 times smaller, with a density of 1.0-1.4t / m3. The energy density is equivalent to that of medium-quality bituminous coal. When used, the...

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Problems solved by technology

[0005] In "Structure Improvement of Powder Material Screw Conveyor" ("Mining and Metallurgy" December 2007), "Technical Improvement of Screw Conveyor" ("Phosphate Fertilizer and Compound Fertilizer" May 2008) and other articles and the patent number is 02260632.7 In the patent (application date 2002.10.09), the design and improvement of the screw conveyor were introduced, but it was mainly the design of the sealing and transmission of the conveyor, and the screw conveyor still uses a full screw in structure, that is, it is in the output The top of the feed port is still a spiral structure, which does not solve the problem of material discontinuity, accumulation and blockage at the end of the screw conveyor

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