Novel energy-saving stirrer

Abstract

The invention discloses a novel energy-saving stirrer. A variable angle is arranged for each blade tip, and each blade is composed of a blade tip, a blade root and an shaped arc, so that a fluid is less sheared. In order to achieve a uniform shaft suction effect along the whole length and obtain the optimal speed effect at each point on the stirring blades, the dip angle and the curved surface chord width along the length direction of the stirring blades are variable, the blade root with lower linear speed is wide and has large dip angle, and the blade tip with higher linear speed is narrow and has small dip angle. The rear sides of the blades are in smooth arc transition, so that the whole stirring blades are streamlined, the curved surfaces of the stirring blades face downwards, an efficient downward suction effect is generated with the minimum pushing force, and finally, smooth motion of a fluid medium is obtained. Meanwhile, separation of a boundary layer with energy loss is prevented, the flow pattern of fluid is in a W shape, and the power consumption is reduced while the flow is maximized. The stirrer has the advantages of high efficiency, energy conservation, consumption reduction, large liquid discharge amount, good circulation effect and simple structure.

Description

technical field [0001] The invention belongs to the technical field of stirring machinery, and in particular relates to a novel energy-saving stirrer. Background technique [0002] The agitator in the stirring mechanical equipment is a key component for forced convection and uniform mixing of fixed, liquid and gas media. The agitator is divided into axial flow agitator and radial flow agitator according to the fluid flow form. The propulsion agitator is the axial flow agitator. The representative of the flow type and circulation type agitator, the blade of the traditional propulsion agitator is similar to the "racket" shape. When it rotates at high speed, the axial suction effect generated by the central part of the blade is undoubtedly the largest, and the tip of the blade shrinks sharply. The energy separation layer is formed, resulting in a state of poor stirring effect. The root of the blade is narrow, and the axial suction effect of the blade root due to high-speed rota...

AI Technical Summary

Problems solved by technology

[0002] The agitator in the stirring mechanical equipment is a key component for forced convection and uniform mixing of fixed, liquid and gas media. The agitator is divided into axial flow agitator and radial flow agitator according to the fluid flow form. The propulsion agitator is the axial flow agitator. The representative of the flow type and circulation type agitator, the blade of the traditional propulsion agitator is similar to the "racket" shape. When it rotates at high speed, the axial suction effect generated by the central part of the blade is undoubtedly the largest, and the tip of the blade shrinks sharply. The energy separation layer is formed, resulting in a state of poor stirring effect. The root of the blade is narrow, and the axial suction effect of the blade root due to high-speed rotation is the smallest, but the torsion and thrust that can be tolerated here are the largest, resulting in the traditional propulsion. The root of the agitator blade has low strength and is easy to break. At present, the traditional propulsion type agitator blade uses many molds in the manufacturing process. It is difficult to make it detachable, the investment cost is large, and the production cost remains high.

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