Double-mass anti-resonance vibrating screen

Abstract

The invention discloses a double-mass anti-resonance vibrating screen. The double-mass anti-resonance vibrating screen comprises a screen box, a cantilever screen body, a supporting frame, master vibration springs, isolation springs, a bearing frame and vibration excitation devices; the screen box is arranged on the bearing frame through the isolation springs; the supporting frame is fixed to a cross beam of the screen box; the cantilever screen body is fixed to the supporting frame through the master vibration springs; and the vibration excitation devices are arranged at the bottom of the screen box. According to the double-mass anti-resonance vibrating screen, a double-mass anti-resonance design is adopted for the vibrating screen, the cantilever screen body independently serves as a vibration body so that the mass of vibration can be decreased to the largest extent, meanwhile, aiming at the connecting problem of the cantilever screen body and the screen box, connecting structures taking plate springs and spiral springs as the master vibration springs are designed separately, and therefore the structure is simple, and the maintenance is convenient; and Meanwhile, the cantilever screen body is adopted so that screen pores can be effectively prevented from being blocked, the vibrating screen is particularly suitable for screening fine, viscous and wet ore materials, in addition, the screening efficiency is high, the weight can be decreased, and energy can be saved.

Description

technical field [0001] The invention relates to a two-mass anti-resonance vibrating screen, which belongs to the technical field of vibrating machinery. Background technique [0002] Vibration reduction using anti-resonance principle is a relatively advanced and mature design method, which is mainly aimed at the vibration reduction and vibration isolation design of vibrating machinery under single frequency excitation. [0003] At present, most large-scale vibrating screens work far beyond the resonance state. They are large-scale non-resonant inertial vibrating screens. Most of the vibrating screens adopt a single-mass vibration isolation design. The disadvantage is: no matter whether the traditional vibrating screen is resonant or non-resonant. The vibrator is installed on the screen box, and vibrates with the whole box, so the mass of the vibration is large, and the surrounding area of ​​the exciter needs to be reinforced to further increase the mass of the vibration, and...

AI Technical Summary

Problems solved by technology

[0003] At present, most large-scale vibrating screens work far beyond the resonance state. They are large-scale non-resonant inertial vibrating screens. Most of the vibrating screens adopt a single-mass vibration isolation design. The disadvantage is: no matter whether the traditional vibrating screen is resonant or non-resonant. The vibrator is installed on the screen box, and vibrates with the whole box, so the mass of the vibration is large, and the surrounding area of ​​the exciter needs to be reinforced to further increase the mass of the vibration, and the screen box is directly affected by the exciting force at the same time, because The vibration is strong, and the impact on the structure is relatively large, resulting in serious structural fatigue damage, and the noise is large, and the vibration isolation effect is poor. Even if the secondary vibration isolation is used, the mass of the vibration is still large, and the failure rate of the screen box is high. Lifespan is not ideal

[0004] Although the existing anti-resonance vibrating screen adopts two box structures, which reduces the vibration quality to a certain extent and improves the vibration isolation effect, but due to the addition of a box structure, it has not achieved the maximum reduction Participate in vibration quality, but increase the amount of steel used and production costs

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