A high-frequency sieve with automatic amplitude adjustment and automatic adjustment method

Abstract

The invention relates to a high-frequency screen with automatic amplitude adjustment and an automatic adjustment method, and belongs to the technical field of high-frequency vibrating screens. The technical scheme is: the amplitude of the high-frequency screen is controlled by the current, and the current of the vibrator (4) is sampled, analyzed, adjusted and controlled by the controller (6), so as to achieve the purpose of automatically adjusting the amplitude according to the amount of material. . Therefore, the present invention not only satisfies the adjustment of the amplitude according to the amount of material, but also adopts the structure of three mass spring systems, and the vibration mode of two-stage transmission and two-stage amplification of vibration increases the vibration of the screen, while the vibration of other components does not Exceed the tolerance range, thus ensuring the reliability of the whole machine. The invention has the advantages of on-line automatic adjustment of amplitude, reliable operation, good process effect, low energy consumption, etc., solves the long-term long-awaited technical problem in the field of high-frequency vibrating screen, promotes the development of high-frequency vibrating screen, and also has significant economical benefits. benefits and social benefits.

Description

technical field [0001] The invention relates to a high-frequency sieve with automatic amplitude adjustment and an automatic adjustment method, belonging to the technical field of high-frequency vibrating screens. Background technique [0002] At present, high-frequency vibrating screens have been widely used in the dehydration or classification of fine-grained materials such as coarse coal slime dewatering, tailings dewatering, sand and gravel dewatering, chemical and building material raw material classification. High-frequency vibrating screens are divided into three types: electromagnetic vibration high-frequency screens, mechanical vibration high-frequency screens, and electromagnetic and mechanical composite vibration high-frequency screens, each of which has its own advantages and disadvantages. The main parameters of the vibrating screen are amplitude and vibration frequency. Generally, a higher vibration frequency is selected for fine-grained materials, and a lower v...

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Problems solved by technology

[0003] The amplitude of the high-frequency vibrating screen will be designed according to different situations to choose a more suitable working amplitude. However, in production practice, it is difficult to control the feeding amount of the high-frequency vibrating screen. When the amount of material increases, the vibration quality increases. Larger, the vibration amplitude of the sieve machine becomes smaller

Therefore, the materials cannot be processed in time, which will form a stacking phenomenon and affect the normal production

In order to overcome the above problems, people design the high-frequency vibrating screen in a sub-resonant state, and when the material increases, it will produce a large amplitude. However, this design cannot automatically adjust the amplitude according to the material volume, and cannot adjust to meet the required amplitude of the material volume. The operation reliability is poor, the working state is unstable, and the required amplitude cannot be reached; the amplitude cannot be automatically adjusted according to the amount of material on the screen. When the amount of material on the screen is large, material blocking will still occur. When the amount is small, it will work in a state of large amplitude

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