A large-scale vibrating screen motion adjustment method and system

An adjustment method and adjustment system technology, which is applied to chemical instruments and methods, filter screens, solid separation, etc., can solve the problems of small range, low efficiency, and low adjustment accuracy, and achieve simple operation, good economic effect, and improved coal preparation. efficiency effect

Active Publication Date: 2021-01-01
HOHAI UNIV CHANGZHOU
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  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a large-scale vibrating screen motion adjustment method and system, and solve the technical problems of low adjustment accuracy, small range, and low efficiency of the existing motion adjustment technology

Method used

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  • A large-scale vibrating screen motion adjustment method and system
  • A large-scale vibrating screen motion adjustment method and system
  • A large-scale vibrating screen motion adjustment method and system

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Embodiment Construction

[0035] figure 1 It is the traditional vibrating screen that mostly uses the uncoupled plane two-degree-of-freedom dynamic model. The existing technology is mainly to change the amplitude of the exciting force by manually increasing or decreasing the plug on the eccentric block of the box-type vibrator or changing the eccentric position of the additional mass block. This technology can only be implemented in the shutdown state, and the adjustment accuracy Low and limited range, which is not conducive to the improvement of coal preparation production efficiency.

[0036] The invention provides a method for adjusting the motion of a large-scale vibrating screen. A parameter combination sample for calculating projectile intensity-exciting circle frequency is constructed through theoretical calculation. According to the required projectile intensity, the frequency of the exciting circle corresponding to the projectile intensity is first found in the sample. , and then adjust the f...

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Abstract

The invention discloses a method for adjusting the motion of a large vibrating screen. The method comprises the following steps: (1) constructing a calculated projectile intensity-excitation circularfrequency database of the vibrating screen; (2) collecting displacement signals of a screen body in horizontal and vertical directions and motor speed signals of an excitation system; (3) obtaining amplitudes of displacement signals and the actually measured excitation circular frequency under the circumstance of stable motion of the vibrating screen; (4) calculating the actual projectile intensity; and (5) carrying out coordination control on the excitation system and a vibration isolation system on the basis of the required projectile intensity. The invention also discloses a system for adjusting the motion of the large vibrating screen. The system comprises a displacement detecting module, a rotation speed detecting module, a signal collecting card, a computer, a frequency converter, anactuator and a coordination controller. By means of the method and the system for adjusting the motion of the large vibrating screen, which are disclosed by the invention, the technical problems of low adjustment accuracy, small range, low efficiency and the like of conventional motion adjusting techniques can be solved.

Description

technical field [0001] The invention specifically relates to a method and system for adjusting the motion of a large-scale vibrating screen, which belongs to the technical field of vibrating screening. Background technique [0002] Vibrating screen is the key equipment for coal preparation production. When the process parameters (processing capacity or feed particle size, etc.) of the coal preparation line where the vibrating screen is located change, the projectile strength of the vibrating screen needs to be changed accordingly. According to the China Machinery Industry Standard (JB / T9022-2012), the projectile strength of large vibrating screens is 2.5 to 4.0, among which, for materials that are difficult to sieve, a large value should be taken, while materials that are easy to sieve should be taken as a small value, and for small sieve holes The sieve surface should take a large value, and the sieve surface should take a small value for a large sieve mesh. In the case t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B07B1/42B07B1/28
CPCB07B1/42B07B13/18
Inventor 何小笛彭利平马闻达方润心梅志千安翠翠
Owner HOHAI UNIV CHANGZHOU
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