| 摘要 |
FIELD: gas and oil industry. ^ SUBSTANCE: resonance screen comprises base, frame mounted with the use of shock-absorbers, screen clothes secured to the frame, device for changing the inclination of the frame, supplying chute, vibrator mounted on the beam secured to the frame sides, and spring interposed between the vibrator and beam. The rigidity of the spring and shock absorbers in the direction of the vector of the frame vibration and mass of the frame are related as C + Can/M = omega2, where C is the spring rigidity in N/m, Ca is the rigidity of the shock-absorber in N/m, n is the number of the shock-absorbers, M is the mass of the frame in kg, and omega is the resonance angular frequency of the vibration of the frame in rad/s. The windings of the vibrator are connected to the power source through the frequency converter which can change the frequency of the electric current. ^ EFFECT: expanded functional capability. ^ 2 cl, 2 ex |
