Oscillator for screening superfine powder

Abstract

The invention discloses an oscillator for superfine powder screening, which includes a base, a cover plate, a screen frame, and a screen mesh. A groove is formed on the upper end surface of the base, and a flange is provided on the outer wall along the outer circumference of the lower end surface of the screen frame. The flange is connected to the base through a buckle. A secondary discharge pipe is provided on the lower end of the base, and a primary discharge pipe is provided on the side wall of the screen frame. The top cover seals the upper opening of the screen frame. There is a feed pipe, and the skeleton includes a reinforcing ring, three resonance rings and three connecting rods. Two adjacent resonance rings are connected by connecting rods. There are three connecting plates on the inner wall of the lower end of the screen frame. The middle part of the connecting rods It is fixed with the connecting rod, and the connecting rod is connected with the connecting plate through bolts. Under the premise of not affecting the passage of materials, the skeleton under the screen greatly improves the support strength of the screen, increases the bearing capacity of the screen, and can effectively improve the output and service life.

Description

technical field [0001] The invention relates to the field of material fine screening, in particular to an oscillator for superfine powder screening. Background technique [0002] The motion trajectory of the ultrasonic vibrating screen is a circle, which is a new type of multi-layer, high-efficiency vibrating screen. The ultrasonic vibrating screen uses a cylindrical eccentric shaft exciter and a partial block to adjust the amplitude. The material sieve has a long flow line and a large number of screening specifications. It was originally designed for screening materials in quarries. Now it is used in mines, coal preparation, mineral processing, and building materials. It is also widely used in product classification in, electric power and chemical industry departments. It has the characteristics of reliable structure, strong excitation force, high screening efficiency, low vibration noise, sturdy and durable, convenient maintenance, and safe use. However, the existing ultr...

AI Technical Summary

Problems solved by technology

Aiming at the defects that the existing vibrating screen has a narrow scope of application and the effect of improving the screening accuracy is not obvious, the applicant designed a new type of ultrasonic oscillator, including a base, a screen frame, a screen, and a skeleton installed on the base. As well as the cover plate, the material enters the screen from the feed pipe. After the ultrasonic transducer is activated, the screen starts to vibrate to screen the material. Under the vibration effect generated by the ultrasonic wave, the upper surface of the screen enters the primary feeding pipe, while the small particle material starts to fall from the suspension state under the factor of its own gravity, and finally enters the groove through the screen. Then it is discharged from the secondary discharge pipe to facilitate the centralized collection of the operator; the skeleton under the screen includes a reinforcement ring and three resonance rings, and the adjacent two resonance rings are connected by connecting rods, and the reinforcement ring Three connecting rods are connected to the connecting plate bolts on the inner wall of the screen frame, that is, four resonance sources are formed at the bottom of the screen, and the ultrasonic transducer is fixed on the connecting rods to be located between two adjacent resonance rings. Directly add two resonance sources, so that when screening materials, the uniformity of vibration frequency distribution on the screen surface is increased, so as to greatly improve the screening accuracy and achieve the purpose of improving screening efficiency

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