Extrusion die of straw briquetting machine

Abstract

The invention relates to an extrusion die of a straw briquetting machine. The extrusion die is formed by fan-shaped die blocks with the same appearance, size and structure and is annular; the upper flat surfaces and the lower flat surfaces of the die blocks are parallel; the inner circular arcs and the outer circular arcs of the die blocks are concentric; a through hole and a pin hole which penetrate through the upper flat surface and the lower flat surface are arranged in the same place of each die block; two recessed radial cavities are respectively arranged in the centers of the two side surfaces of the die block; and the two adjacent die blocks are assembled into a whole cavity. The extrusion die is characterized in that an external discharging cavity is in a circular hole structure, an internal feeding cavity is in a square hole structure, and the circular hole structure and the square hole structure are in natural transition through the circular arcs. For the extrusion die, the cavities of the die blocks are in internally square and externally round structures which decrease the running resistance of feeding and are beneficial to discharging and forming. The die blocks adopt positioning and assembling combination structures and are easy to rapidly change and clean, thereby reducing the standby time and improving the production efficiency. The extrusion die is particularly suitable for briquetting straws, such as corns, rice and wheat, cotton stalks, and biomass raw materials such as sawdust, rice husks, domestic garbage and the like.

Description

technical field [0001] The invention relates to an agricultural machinery accessory, in particular to an extrusion die of a straw briquetting machine. Background technique [0002] Straw is a by-product of stalk crops. Scientific research has confirmed that most straws are available resources. Due to the high cost of bulk straw transportation, large stacking area, and low heat generated by direct combustion, the vast majority The stalks are not effectively utilized, but are artificially abandoned or even burned on the spot. In addition to producing smoke and dust to pollute the environment during straw burning, it also causes carbonization of the land at the burning place, and the microbial bacteria in the over-fired land are also burned to death, thereby reducing the output of later planting. In addition, when the stalk is burned, the fire is easy to get out of control and cause a fire. The straw briquetting machine is one of the special machines for effective utilization...

AI Technical Summary

Problems solved by technology

For example, when the cross-section of the module cavity is circular, the resistance of the feed movement is large, and the production capacity is affected

When the cross-section of the module cavity is square, the discharge forming effect is poor

In general, there is a gap between the extrusion module cavity of the existing straw briquetting machine and the actual production demand

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