Double-rocker-arm self-balancing elastic drive type flip-flow screen

Abstract

The invention discloses a double-rocker-arm self-balancing elastic drive type flip-flow screen. The double-rocker-arm self-balancing elastic drive type flip-flow screen comprises a rack, an inner screen frame, an outer screen frame, a motor, a rotating shaft, connecting rods and double-rocker-arm supporting devices. The motor is arranged on the rack and connected with the rotating shaft through abelt transmission mechanism, the rotating shaft is arranged at the top end of the inner screen frame, two sections of crankshafts are symmetrically arranged at the two ends of the rotating shaft and connected to the outer screen frame through the connecting rods, the inner screen frame is sleeved with the outer screen frame, the double-rocker-arm supporting devices are arranged on the rack, upperrocker arms of the double-rocker-arm supporting devices are connected to the inner screen frame, lower rocker arms of the double-rocker-arm supporting devices are connected to the outer screen frame,and a screen plate is arranged on the inner screen frame. The screen is simple and compact in structure and low in installation height, the inner screen frame and the outer screen frame can carry outinverse-phase straight reciprocating motion, the dynamic load of a foundation is small, energy consumption is low, the amplitude is adjustable, the mechanical motion noise in the flip-flow motion process of the elastic screen plate is eliminated through swing bearings and the double-rocker-arm supporting devices, and the work comfortableness of field working personnel is greatly improved.

Description

technical field [0001] The invention relates to the technical field of screening machinery, in particular to a double rocker arm self-balancing elastically driven relaxation screen. Background technique [0002] The relaxation screen better solves the problem of dry deep screening of viscous and wet fine-grained materials, simplifies the technological process in the fields of metallurgy, coal washing and solid waste sorting, reduces processing costs, and has great impact on energy saving and emission reduction. very important meaning. [0003] At present, there are mainly two types of relaxation screens at home and abroad: one is based on circular vibrating screens and linear vibrating screens, with shear springs and floating screen frames installed, under the action of the exciting force of the exciter The main floating screen frame produces relative motion. The vibrating relaxation screen generally works on the left side of the anti-resonance point, and the inner and oute...

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly two types of relaxation screens at home and abroad: one is based on circular vibrating screens and linear vibrating screens, with shear springs and floating screen frames installed, under the action of the exciting force of the exciter The main floating screen frame produces relative motion. The vibrating relaxation screen generally works on the left side of the anti-resonance point, and the inner and outer screen frames move in the same phase. The relaxation motion is caused by the speed difference between the inner and outer screen frames. Complicated, with many components and high energy consumption

The other is the LIWELL relaxation screen produced by German HEIN LEHMANN company. This relaxation screen uses a crank linkage mechanism to drive the inner and outer screen frames to perform relative motion with a phase difference of 180°. It has a relatively simple structure and low energy consumption. The key components of the screen machine: push-pull rod springs and support guide springs are made of special materials and are not easy to obtain. Therefore, LIWELL relaxation screens mainly rely on imports, and the price is relatively expensive.

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