General purpose electromechanical vibrator with circular vibrations explosion-proof EVV-25.0-1500 U2 It is intended for use as part of vibrating machines and mechanisms used in explosive types of chemical, gas, and oil refining industries, where explosive mixtures of gases and vapors with air can form, classified as category IIA and temperature class T4 according to GOST R 51330.0-99, GOST R 51330.5-99, GOST R 51330.11-99.
The scope of application of the vibrator in explosive zones in accordance with Chapter 7.3 of the PUE-86.
The vibrator can be operated on vibrating tables and vibrating platforms for compacting concrete mixtures and soils, vibrating screens for sorting granular and lumpy materials, vibrating screens for sieving or dewatering bulk materials, vibrating conveyors and other vibration mechanisms.
The type of explosion protection of the vibrator is an "explosion–proof shell" according to GOST R 51330.1-99.
Explosion protection marking 1ЕхdIIAT4 according to GOST R 51330.0-99.
Type of climatic design U2 according to GOST 15150.
The vibrator is a three-phase asynchronous electric motor with a short-circuited rotor with unbalances mounted at the ends of the rotor shaft. The unbalances, rotating with the rotor shaft, create a driving force.
To regulate the magnitude of the driving force of the vibrator, the unbalances at both ends of the shaft are double. The adjustment is carried out by changing the angle between the movable and fixed unbalances at both ends of the shaft.
The vibrator can work with an adjustable electronic frequency converter, which allows you to change the vibration frequency from 0 to 1.5 nominal, within the permissible value of the driving force, save electricity, limit starting currents, choose the optimal mode of operation.
Special vibration-resistant roller bearings are installed in the vibrator, which guarantee a high service life:
according to its characteristics – resource and connection dimensions, the vibrator corresponds to Western analogues of Italvibras and Venancetti.