The reasons for the excessive damage of the screen are mainly the accumulation of clay , the wrong steering of the motor, the tightness of the screen and the screen frame, and the poor quality of the screen. Ultra-high frequency induction heating equipment is a kind of equipment developed for surface quenching by applying electromagnetic induction principle and modern power electronic technology. Surface heat treatment process in which the workpiece is heated locally by an induced current. This heat treatment process is often used for surface quenching, but can also be used for local annealing or tempering, and sometimes for bulk quenching and tempering. UHF,UHF Heater,Ultra High Frequency,UHF Heating Equipment Ningbo Yufeng Electronics Co., Ltd , https://www.yufengheating.com
(1) The vibrational amplitude of clay accumulation is too small, and it is difficult to sieve under the condition of polymer drilling fluid, which 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 sift the screen and cuttings to reduce the viscosity of the drill cuttings, but this method is only suitable for occasions where water is allowed to be added; 3 adjust the screen angle of the sand outlet end downward It is good for the debris to be discharged by gravity, but it may lead to running the slurry; 4Replace the mesh of the screen or adjust the flow of the single sieve to ensure that the flow stop of the drilling fluid is close to the outlet of the screen, so that the drilling debris is lubricated in the drilling fluid. Smoothly discharged.
(2) Motor steering error When debugging the motor steering, the field operator based on the experience of the previous single-axis vibrating screen or linear screen, it is considered that as long as the cuttings go forward, this method is not suitable for the translational elliptical vibrating screen ( see picture 1). 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 path formed by the small point on the side plate during the operation of the vibrating screen, and roll to the sand outlet. Correct steering; 2Remove the vibrator cover, check whether the apricot eccentric block rotates to the outside; 3Replace any 2 phase lines in the incoming power supply of the electric control box, sprinkle some sand on the screen surface, and the sand discharge speed is faster. One is the right direction.
(3) The screen and the screen frame are not tightly supported. The screen is not reliably contacted by the strip after the strip is worn; the screen is not properly tightened.
(4) Screen quality difference Screen generally has an upper sieve layer and a lower force layer, which is required to be closely adhered to each other. If the screen pre-tensioning process is poor, when the screen is under the force layer When tightened, the sieve layer is not tightened, and the throwing force of the drill cuttings is greatly reduced during work, and the drill cuttings cannot be screened and discharged.
Uhf induction heating equipment adopts IGBT efficacy, soft switching resonant dual control and frequency automatic tracking system, MOSFET devices and unique frequency conversion technology, high frequency operation is stable. Uhf INDUCTION heating equipment with constant current and power control function, greatly optimize the metal heating process. Under the same conditions, it has 50% energy saving compared with the traditional high cycle electron tube heating equipment, no high cycle radiation, no high cycle drying. Reduced power load and power capacity, with 100% full load design, UHF induction heating equipment can work continuously for 24 hours without interruption. With automatic heating, insulation, cooling three periods of function Settings, is conducive to improve the heating quality of UHF induction heating equipment, simplified manual operation. Uhf induction heating equipment can be selected according to the power and frequency. The higher the high frequency, the shallower the heating depth, and the lower the high frequency, the better the diathermy. Induction heater 1 ~ 20KHZ high frequency automatic tracking.
UHF heating equipment has the advantages of high frequency, small size, light weight, energy saving, solid and beautiful solder joints, almost unlimited welding part shape, surface pattern will not be damaged, the metal internal crystal structure unchanged, small annealing range and so on. , no obvious welding scar, widely used in metal glass manufacturing, electrical and electronic industry connector welding, small relay internal non-contact welding, refrigeration industry high pressure welding, jewelry industry parts welding, manufacturing metal jewelry and process welding.