Shaker screen breakage of excessive causes and corresponding solutions

Excessive breakage reasons: Mainly due to excessive vibration sieve breakage are: substandard quality screen, screen tensioning force, vibration motor rotation error, CLAY like. The solution is: 1, the screen tension is not enough, so as to cause the screen vibrate, usually at a pressure of broken or damaged along the screen edges or edging. 2, screen quality substandard, generally mesh sieve layer and the lower layer of the upper part of the force, requires close contact between the two layers, if the mesh pre-tensioning process is poor, when the force at the bottom of the screen when the layer of tension, the screening layer is not taut, work cuttings throwing power greatly reduced, can not be discharged cuttings. 3, the vibration motor rotation error when debugging steering vibration motor, site operators based on past experience with single-axis shaker or linear vibrating screen, as long as the cuttings move forward on the line, but this method does not apply to balanced elliptical motion screen. If the motor rotates inward error, although the projection angle is the forward 45 °, but the cuttings have to scroll backward force, then cuttings forward transport speed is much slower in the sieve to stay a long time, even cause the cuttings can not be discharged. Solution: ① When the screen box operation, press the stop button electronic control box, when the shaker will grind to a halt, observe the oval track side dots on the operation at the time of the formation of the vibrating screen, sand mouth to scroll to the correct steering; ② Remove the vibrator cover, check whether all apricot eccentric rotation to the outside; ③ exchange electronic control box into the line supply any two phase conductors in the screen above, sprinkle some sand, sand discharge faster one that is the right direction. 4, CLAY vibration amplitude is too small, under difficult conditions sieving polymer drilling fluid, can not overcome the cuttings (clay) of viscous forces, resulting in the accumulation of drill cuttings in the sieve quickly damage the screen. Solution: ① increase the amplitude of the vibration; ② by spraying water will screen and cuttings to reduce the viscosity of the drill cuttings, but this method only allows the addition of water suitable for the occasion; ③ to adjust the discharge port side of the sand screen angle downward conducive cuttings discharged by gravity, but may lead to run pulp; ④ replacement mesh sieve or a sieve to adjust the flow rate of the single, only to ensure the flow of drilling fluid near the point of exit screen, so that the smooth discharge of cuttings in the drilling fluid lubrication.