The development of piezoelectric vibrating gauge

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(Free-Press-Release.com) January 5, 2012 --

With automation and half-automation developing, automatic feed unit has become a production line the essential part, the structure,Rotary kiln the noise, the working principle, the transmission precision and how easy it is to control aspects put forward higher request, the traditional electromagnetic vibration feed unit already cannot satisfy the current situation requirements. So more than ten years as a driver of piezoelectric ceramic source of new vibration feed unit are rapidly developed. Piezoelectric vibration feed unit is will pressure point technology in vibration conveyor of a new type of vibration feed unit, it use the converse piezoelectric effect of piezoelectric vibration, as the drive source materials trough of material driven realization transmission.
1) the research situation on abroad and home: for this new type of vibration feed unit,Classifiers its structure and working principle is different from the traditional electromagnetic or mechanical drive vibration feed unit, so it has many traditional vibration feed unit has features: (1) structure is simple to install and maintain, more convenient;

(2) application piezoelectric patches as drive source, no motor, electromagnetic vibration machine etc device drivers, also need not shaft, rod, belts and other mechanical transmission parts, the structure is simple, easy to manufacture;
(3) change the drive signal amplitude,Jaw crusher pulse width and frequency of arbitrary a, can adjust transmission rate, more control parameters,Rock crushing plant control;
(4) without the rotation inertia, almost no acceleration and deceleration process, start and stop quickly, fast reaction performance;
(5) do not produce the interference of electromagnetic field, nor the electromagnetic interference signals influence;
(6) in the low shows or ultrasound working, the noise is small;

(7) in resonance or no resonant state work, so less energy consumption;Mobile crushers
(8) driving force insufficient to transport the materials are overweight, so the devices used in the most material trace or precise conveying. Piezoelectric vibration feed unit is vibration in the field of feeding a significant breakthrough, the scientific and technological personnel at home and abroad in different degrees of research, and has obtained the certain result, according to the material forward manner can be classified into the straight into type and spiral two kinds.

2) foreign research condition in the industrial developed countries or regions, Japan, the United States is the most representative, especially Japan, piezoelectric vibration feed unit theory, design and calculation of the study more thorough and complete, also launched a range of new and different agencies vibration feed unit.Cement production line For straight into piezoelectric driven vibration feed unit, Japan has now developed device has three. The first kind of structure for piezoelectric patches with double piezoelectric crystal slice. In the piezoelectric patches and alternating current, dual piezoelectric crystal slice of produce periodic bending drive,Ball mill drive the material to drive the slot, and achieve the material conveying. The second kind of structure for piezoelectric patches also USES a dual piezoelectric crystal slice. The third kind of structure, it is not using a piezoelectric crystal piece, but in a pair of piezoelectric patches for alternating current phase instead. The United States spiral piezoelectric vibration feed unit abroad vibration feed unit of piezoelectric on research has made great progress, they have the above except piezoelectric vibration feed unit the common characteristics of outside, they also has its unique:
(1) The application of piezoelectric patches on the direction of telescopic vibration mode;
(2) the use of special manufacture of double piezoelectric crystal slice, or in a pair of piezoelectric places opposite phase voltage, not only increase the cost of production, and greatly improve the power supply requirements;
(3) straight into type piezoelectric vibration feed unit are the vibration components and materials trough support components separate way, this makes the stress of the vibration components system simplistic;

(4) most need to increase vibration body to expand the vibration amplitude, make the device structure complicated;
(5) straight into the second kind of structure and type spiral piezoelectric vibration feed unit of the fuel tank (material boat) support components and vibration components separate, but still bear the vibration components materials trough (material boat) and material weight, so that the vibration components complex loading, can affect device stability;

(6) straight into the second kind of structure and type spiral piezoelectric vibration feed unit of the vibration of the components is the fixed installation, feeding trough transmission great restraint, and overcome the constraints will consume more energy.
Cement mill：www.china-crusher.com/cement-mill5.html
Impact stone crusher：www.hxjqcrusher.com/crusher/Mobile-impact-crusher.html
Spiral separator：www.hxjqcrusher.com/crusher/Screw-classifier.html

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