Screw shaft assembly and double-screw conveying device thereof

Abstract

The invention discloses a screw shaft assembly and a double-screw conveying device thereof. The screw shaft assembly comprises a rectangular base, a self-cleaning mechanism is arranged at one end of the upper surface of the rectangular base, and an output anti-blocking mechanism is arranged at the other end of the upper surface of the rectangular base. The screw shaft assembly and the double-screwconveying device thereof have the beneficial effects that double screws are engaged with each other and rotate in the same direction through conjugate threads, meanwhile, the part machining and assembling precision is improved, the assembling gaps between the screws and between the screws and the inner wall of a barrel are reduced, and the purposes of self-cleaning between the screws, self-cleaning between the screws and the wall of the barrel and material stirring and mixing are achieved. The slurry backflow gap of a single screw is blocked through conjugate meshing of the threads between the screws, the backflow resistance of the slurry is effectively increased, and the purposes of preventing materials from being blocked and flowing back easily, improving the slurry conveying efficiencyand establishing relatively stable outlet pressure are achieved.

Description

technical field [0001] The invention relates to the technical field of double-screw conveying, more specifically, to a screw shaft assembly and a double-screw conveying device. Background technique [0002] At present, the existing similar conveying equipment on the market is the traditional single and double screw conveyor. The screw conveyor is composed of three parts: the conveyor body, the inlet and outlet, and the driving device. The screw machine body is composed of head bearings, tail bearings, suspension bearings, It is composed of screw, casing, cover plate and base. The driving device is composed of a motor, a reducer, a coupling and a base; [0003] The transportation of existing battery slurry generally uses screw pumps to pressurize and use pipelines for long-distance transportation. However, with the development of battery materials, the transportation of more viscous positive and negative electrode slurry has been mentioned. The existing long-distance pipelin...

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Problems solved by technology

[0003] The transportation of existing battery slurry generally uses screw pumps to pressurize and use pipelines for long-distance transportation. However, with the development of battery materials, the transportation of more viscous positive and negative electrode slurry has been mentioned. The existing long-distance pipelines The problem of difficult cleaning and high resistance of road transportation has been exposed. The screw conveyor is an effective way to solve this problem. However, the existing screw conveyor has its own limitations and cannot be used well in practical engineering applications. effect, there are the following problems:

[0004] The gap between the tube wall and the screw blade of the screw conveyor is large, and the viscous material to be transported will accumulate in the gap. At the same time, the material accumulation will also occur on the screw and the blade. Since the battery slurry has a certain aging requirement, the accumulation of material must be done regularly. Man-made cleaning, heavy workload and difficult to clean, seriously affects the output efficiency; the blade of the screw conveyor is a single-head long-distance conveying material with high resistance at the far end, which is easily blocked and reversed, and the long-distance conveying efficiency of viscous slurry is low, and due to the The material particles are micron-sized, small and fluid, and the gap between the blade and the wall of the cylinder will cause leakage. Long-distance transportation of viscous materials has a large resistance and leakage is more serious, which affects the transmission efficiency; the screw conveyor conveys viscous Fluid, can not establish a relatively stable outlet pressure; There is a closed space at the inlet of the slurry, and the previous process may have uneven mixing, resulting in a decrease in product performance

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