Improved expander

Abstract

The invention discloses an improved expander comprising an expanding chamber and a conditioner; the expanding chamber is internally provided with a main shaft and a screw in a length direction, and the outer wall of the screw is sleeved with a spiral bulge; a feeder is arranged on the conditioner, and feeding packing augers are arranged in the feeder; the end of the main shaft is provided with a bolt, the bolt extends out of the port of the discharge port end of the main shaft, the outer end part of the bolt is of a structure matched with a nut, and the nut covers the end part of the bolt anda position from the end part of the bolt to the position close to a second gasket; a longitudinal cross section of the spiral bulge is of a trapezoidal structure; the trapezoidal structure is right-angle trapezoidal or approximately right-angle trapezoidal structure, and the separation distances of the feeding packing augers are different. The use of the expander is not limited by a pressure ring,and the pressure adjustment range is wider.

Description

technical field [0001] The present invention relates to an improved puffing machine. Background technique [0002] Material puffing requires pressure, if the pressure is not up to the requirement, the degree of extrusion of the material will not be enough, and the puffing of the material will not be complete, which will affect the degree of ripening and puffing. In existing extruders, the change of pressure can be realized by adjusting the screw gap, screw speed, pressure ring and the gap between the expansion chamber. On the basis of fixing the screw gap, screw speed and the gap between the expansion chamber, it is basically realized by installing the pressure ring. The pressure ring installed on the extruder head part is impacted by the huge thrust generated by the material moving from the puffing chamber to the discharge port, which may easily lead to loosening and falling off, further affecting the original fastening structural parts. Take the TDPH-260 raw material puffi...

AI Technical Summary

Problems solved by technology

And in actual production, when processing low-oil crops, due to the low oil content of low-oil crops, the existing equipment, the thrust of the material from the puffing chamber to the discharge port is relatively large, and the impact on the pressure ring is also very large. This kind of production appears The loosening and falling off of the pressure ring leads to more frequent loosening or even falling off of the fastening structural parts

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