Vibration exciter

Abstract

The invention discloses a vibration exciter, which comprises a base and a rectangular box fixed to the upper portion of the base. Two pairs of circular through holes are correspondingly arranged on two sides of the box, first eccentric block structures are symmetrically arranged at two ends of a driving shaft respectively, each first eccentric block structure includes two fan-shaped eccentric blocks which are adjacently and fixedly connected onto the driving shaft, second eccentric block structures are symmetrically arranged at two ends of a driven shaft respectively, each second eccentric block structure includes two eccentric blocks which are arranged at intervals, and the space between the two eccentric blocks of each second eccentric block structure corresponds to the positions of the two eccentric blocks. Each eccentric block structure of the vibration exciter includes two staggered eccentric blocks, the weight of each single eccentric block is reduced by half so that the eccentric block is easy to detach, and lead of higher density is filled on a sector to increase excitation force and improve efficiency.

Description

technical field [0001] The invention relates to a vibration exciter, in particular to a vibration exciter structure which can effectively improve the efficiency of the vibration excitation force, is convenient to assemble and disassemble, and has good sealing effect. Background technique [0002] Vibratory screening machines used in the ore processing industry are commonly used to separate minerals such as coal or metal ores by size after crushing. The unit generally comprises screen decks with RHS or box-shaped I-beam screen supports spaced apart so as to rigidly support standard molded screen inserts between side plates which pass through the The other transverse members are further interconnected. The sieve plate can be flat or also curved so as to form a so-called banana-shaped sieve. The screening unit is vibrated by an exciter unit located at the top of the unit, usually mounted on a heavy cross beam. [0003] Chinese patent 01813939.6 discloses a vibrator device, w...

AI Technical Summary

Problems solved by technology

[0004] However, the technology disclosed in the above-mentioned patent uses a single eccentric block, which is very heavy, and the single block weighs more than 120 kg, which makes it very inconvenient to disassemble and assemble. In addition, the vibrator shaft and bearing seals often leak oil, resulting in poor sealing effect and working conditions.

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