Vibrating screen linear vibrating screen Ultrasonic vibrating screen Three-dimensional vibrating screen Drum screen too fast Damage Cause: Screen quality is unqualified, screen tensioning force, vibration motor steering error, clay accumulation, etc. The solution is: 1. Vibrating screen linear vibrating screen Ultrasonic vibrating screen Three-dimensional vibrating screen The screen of the screen screen is not enough to cause the screen to vibrate, usually broken or damaged along the edge of the screen or the edge of the bead. 2. The quality of the screen is unqualified. The screen generally has an upper sieve layer and a lower force layer. It is required that the two layers are closely adhered to each other. If the screen pre-tensioning process is poor, when the screen bottom is stressed, When the layer is tight, the sieve layer is not tightened, and the throwing force of the drill cuttings is greatly reduced during work, and the cuttings cannot be discharged. 3, vibrating screen linear vibrating screen ultrasonic vibrating screen three-dimensional vibrating screen drum screen vibrating motor steering error When debugging vibrating motor steering, field operators based on the experience of the previous single-axis vibrating screen or linear vibrating screen, that as long as the drill cuttings It is OK to go ahead, but this method is not suitable for translational elliptical vibrating screens. If the motor erroneously rotates inward, the throwing angle is also 45° forward, but the cuttings have a force to roll backwards. At this time, the cuttings move forward much more slowly, staying on the screen for a long time, or even The drill cuttings cannot be discharged. Solution: 1 When the sieve box is running, press the stop button of the electric control box. At this time, the vibrating screen will slowly stop, observe the elliptical trajectory formed by the small point on the side plate during the operation of the vibrating screen, and roll to the sand outlet for correct steering; 2Remove the vibrator cover and check whether the apricot eccentric block rotates to the outside; 3 Change any two phase lines in the power supply box of the electric control box, and sprinkle some sand on the screen surface. The one with faster sand discharge speed is the correct direction. 4. The vibration amplitude of clay accumulation is too small, and it is difficult to screen under the condition of polymer drilling fluid. It can not effectively overcome the viscous force of drill cuttings (clay), which causes the cuttings to accumulate on the screen and quickly damage the screen. Solution: 1 increase the vibration amplitude; 2 Use the sprayed water to flush the screen and cuttings to reduce the stickiness of the cuttings, but this method is only suitable for occasions where water is allowed to be added; 3 Adjust the angle of the screen at the end of the sand discharge to the downward direction, which is good for the debris to be discharged by gravity, but it may lead to running the slurry; 4Replace the vibrating screen, linear vibrating screen, ultrasonic vibrating screen, three-dimensional vibrating screen, screen mesh, or adjust the flow rate of the single screen to ensure that the flow stop point of the drilling fluid is close to the screen outlet, so that the drilling debris is lubricated in the drilling fluid. Smoothly discharged.
How to prevent the screen from being damaged by the vibrating screen