Double-shaft bulking machine and working method thereof

Abstract

The invention discloses a double-shaft bulking machine and a working method thereof. The double-shaft bulking machine comprises an outer pipe, a material inlet is formed in the pipe wall of the outerpipe, a lining is arranged in the outer pipe, a notch is reserved in the outer wall of the lining, two conical inner pipes which are arranged in the length direction of the lining and are open in thefront and the back are formed in the lining, and two inner cavities are staggered and communicated in the radial direction; the conical inner pipes are large in front end opening and small in tail endopening, an included angle is formed between the central axes of the two conical inner pipes, a conical screw rod is arranged in each inner cavity in a penetrating mode, spiral blades are wound on the peripheries of the conical screw rods, and the spiral blades on the two conical screw rods are arranged in a staggered mode. According to the double-shaft bulking machine, the conical screw is prevented from jumping or vibrating through the arranged lining and the conical inner pipe, so that energy is concentrated in the conical inner pipe, bulking materials can be extruded out of finer templateholes, the finer and more uniform feed processing effect is achieved, and the double-shaft bulking machine is small in occupied area and high in practicability. The smaller development of the structure of the bulking machine is facilitated.

Description

technical field [0001] The invention relates to the field of extruders, in particular to a biaxial extruder and a working method thereof. Background technique [0002] An extruder is a kind of equipment for processing puffed food or puffed feed. Its main working principle is to convert mechanical energy into heat energy. The heat generated when the machine rotates is used to extrude the food or feed. The puffed food or feed is the most obvious The characteristic is that the volume becomes larger. [0003] During the feed expansion process, certain temperature, humidity, and pressure are used to gelatinize the starch and soften the fibers, and kill most harmful bacteria, improving the digestion and utilization rate of the feed; after the feed is expanded, the quality is loose and porous, and the energy It floats in the water for a long time and is suitable for consumption by pelagic fish. [0004] In aquatic feed, the feed extruder is used to extrude the feed. The feed extr...

AI Technical Summary

Problems solved by technology

[0006] Since the double-cone angle α is greater than 3°, the length of the two conical screws 31 cannot be long enough, so that the feeding section is relatively not long enough, so that the processing efficiency is not high enough, and the processing accuracy is not high enough.

[0007] In addition, the dual-cone adjustable-speed screw extruder in this patent arranges the feed screw 5 and the feed screw 5 along the length direction, which makes it occupy a large area in the length direction, which is not conducive to the compact structure of the puffing machine. Small development

Images