Four-short excitation motor linear vibrating screen coupled with torsion spring

Abstract

The invention relates to a four-short shock excitation motor linear vibrating screen with torsion springs coupling. The four-short shock excitation motor linear vibrating screen is composed of a feed hopper, a first shock excitation motor, a shield, a second shock excitation motor, a third shock excitation motor, a motor base, a fourth shock excitation motor, a screen box, an isolation spring, a base, a second coupling eccentric block, the first torsion spring, a first coupling eccentric block, a fourth coupling eccentric block, the second torsion spring and a third coupling eccentric block. The four identical shock excitation motors are installed on the motor base coaxially in pairs, and the torsion springs connect the two axial shock excitation motors in a coupled mode and relieve and absorb start impact of the two shock excitation motors to achieve zero-phase synchronization of the two shock excitation motors. The two pairs of shock excitation motors rotate in the opposite directions at equal speed and generate shock excitation force to achieve linear motion of the vibrating screen. After operation is stable, the two shock excitation motors connected in a coupled mode only need to be powered on alternatively. Shock excitation force of the shock excitation motors can be brought into full play to achieve large amplitude of the vibrating screen, and the four-short shock excitation motor linear vibrating screen is low in energy consumption, simple in structure, easy to install and maintain and small in noise and occupied area.

Description

technical field [0001] The invention relates to a vibrating screen for solid-liquid separation and solid material screening, especially a four-machine-driven linear vibrating screen with a large screening area used in operations such as ore dressing, coal preparation, metallurgy, and oil drilling. Background technique [0002] The linear vibrating screen can be realized by using single-excitation motors, double-excitation motors, four-excitation motors and more than four even-numbered excitation motors. When single-excitation motors and double-excitation motors are used, the total excitation force is limited, and it is difficult to achieve the excitation force required for large-area and efficient screening of vibrating screens. ZL200910187748.6 adopts four excitation motors for self-synchronous vibration. The four excitation motors are divided into two pairs and installed symmetrically on the vibration motor bases of the two auxiliary rigid body units. There is no connectio...

AI Technical Summary

Problems solved by technology

When single-excitation motors and double-excitation motors are used, the total excitation force is limited, and it is difficult to achieve the excitation force required for large-area and efficient screening of vibrating screens

ZL200910187748.6 adopts four excitation motors for self-synchronous vibration. The four excitation motors are divided into two pairs and installed symmetrically on the vibration motor bases of the two auxiliary rigid body units. There is no connection between each pair of vibration motors. , to realize the linear motion track of the vibrating screen, two auxiliary rigid bodies are symmetrically installed on the position of the screen body with the longitudinal axis as the symmetrical axis; due to the electromechanical coupling between the vibrating screen system and the motor system, the two excitation bodies rotating in the same direction The vibrating motors will appear in an anti-phase synchronous state; and the phase difference angle between the coaxial vibrating motors makes the exciting force on the side of the screen box asymmetrical, causing a large sideways swing of the screen box; at the same time, the structure is complex, It is difficult to install, and the motor consumes a lot of energy when realizing a straight track

ZL201520618381.X realizes the four-drive linear vibrating screen by driving four exciters with a motor. Each pair of exciters is installed on the side plate, and the exciters are connected by a connecting shaft, which has a complex structure; only one is needed for start-up. A general-purpose motor drives one set of exciters, and then transmits them to another set of vibrators through a connecting shaft, so a high-power matching motor is required; at the same time, the use of a general-purpose motor drive has the following disadvantages: the general-purpose motor is usually installed on the ground, so that the entire device takes up Increased floor space and additional gearing and maintenance costs

In order to solve the problems of the electromechanical coupling effect of the above-mentioned four-excitation motor linear vibrating screen and the asynchronous start of the excitation motors, a four-short-excitation motor linear vibrating screen coupled with torsion springs is proposed.

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