Three-shaft linkage block eccentric linear vibrating screen

Abstract

The invention relates to the technical field of vibrating screens, in particular to a three-shaft linkage block eccentric linear vibrating screen which comprises a screen box (1), a motor (2), an eccentric block gear box (3), a universal coupler (4) and rubber springs (5). The eccentric block gear box is sequentially provided with a first through shaft (61), a second through shaft (62) and a third through shaft (63). The two ends of the first through shaft, the second through shaft and the third through shaft are all symmetrically provided with spur gears (8) and eccentric blocks (7). The first through shaft, the second through shaft and the third through shaft are in engaged transmission through the spur gears. The first through shaft of the three-shaft linkage block eccentric linear vibrating screen is connected with the motor through the universal coupler and a belt wheel to drive the driven shafts, namely the second through shaft and the third through shaft, to rotate, the rotating speed ratio of the gears to the motor is 1:1, the amplitude reaches 12-17 mm, the vibration frequency is high, and with the same screening area, the screening efficiency of the three-shaft linkage block eccentric linear vibrating screen is improved by 1.5-2 times compared with domestic similar products.

Description

technical field [0001] The invention relates to the technical field of vibrating screens, in particular to a three-axis linkage block eccentric linear vibrating screen. Background technique [0002] The existing thin oil vibrating screen in China adopts the exciter structure, usually two eccentric shafts, and each shaft has an eccentric gear to drive the integral eccentric block. The disadvantage is that the generated excitation force is small and the amplitude of the screen surface is low. The material is not thoroughly screened once, and the screening rate is less than 40%. [0003] In the prior art, the three-axis elliptical screen structure adopts the rotation of the eccentric shaft to generate centrifugal force, so that the vibrating screen can vibrate and generate amplitude. However, the existing vibrator has the following disadvantages: ①. Due to the limited centrifugal force generated by the eccentric shaft, it is difficult to adjust the amplitude; The large size o...

AI Technical Summary

Problems solved by technology

[0002] The existing thin oil vibrating screen in China adopts the exciter structure, usually two eccentric shafts, and each shaft has an eccentric gear to drive the integral eccentric block. The disadvantage is that the generated excitation force is small and the amplitude of the screen surface is low. The material is not thoroughly screened at one time, and the screening rate is less than 40%.

However, the existing vibrator has the following disadvantages: ①. Due to the limited centrifugal force generated by the eccentric shaft, it is difficult to adjust the amplitude; The large size of the middle part makes the shape of the vibrator larger, which increases the height of the screen box, which not only increases the vibration quality but also increases the load on the equipment foundation; ④, because different materials need different excitation forces for screening, In order to achieve a good screening effect, the eccentric shaft exciter is difficult to adjust the exciting force, resulting in unsatisfactory screening effect of some materials and low processing capacity

Images