Side feed conveying system for conveying filler with low bulk density

Abstract

The invention discloses a side feed conveying system for conveying a filler with low bulk density, which comprises a hopper, a screw barrel connected with an extruding machine and a screw rod module, wherein the hopper is arranged above a feed opening of the screw barrel, the screw rod module is arranged inside the screw barrel, the hopper wall of the hopper is a sandwich structure comprising an outer layer and an inner layer, a gap between the outer layer and the inner layer is provided with a plurality of baffles, the bottom of the inner layer of the hopper wall is provided with an exhaust opening, and a hopper cover above the hopper wall is provided with a suction opening of an externally connected exhausting system. The side feed conveying system realizes good exhaust, increases the conveying capacity of the screw rod module, and avoids the situation of the accumulation of the filler in the hopper at the same time, thereby improving the accuracy of the feeding.

Description

technical field [0001] The invention relates to the field of plastic processing machinery, in particular to a side feeding conveying system for conveying low bulk density fillers. Background technique [0002] The feeding system of the extruder is generally divided into the main feeding system and the side feeding system. The main feeding system is used to add the compound, including the main feeding hopper on the extruder and the weighing scale on the main feeding hopper. The side feed system is located on the side of the extruder for adding low bulk density fillers and consists of an attached metering scale, side feed hopper, and screw assembly and barrel for conveying the material to the extruder. At present, the side feeding system of the extruder mainly uses DC or AC to drive co-rotating twin-screw feeding, and its side feeding hopper is also a traditional hopper structure. When the extruder adopts starvation feeding, this traditional There are obvious disadvantages in...

AI Technical Summary

Problems solved by technology

At present, the side feeding system of the extruder mainly uses DC or AC to drive co-rotating twin-screw feeding, and its side feeding hopper is also a traditional hopper structure. When the extruder adopts starvation feeding, this traditional There are obvious disadvantages in the side feeding system: (1) the conveying capacity of the co-rotating twin-screw is limited; (2) the exhaust capacity of the whole system is poor, which is when conveying low bulk density fillers (especially powder) It shows that the conveying capacity is seriously insufficient, which causes the filler to accumulate in the side feeding hopper, resulting in inaccurate metering and feeding, which seriously affects the product quality

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