Electric spray valve function: to add wall agent before feeding, painted the wall after adding water to wash the wall, to ensure that there is no adhesive resin suspension particles in the kettle, improve the effect of anti-sticking coating, after discharge, washed with water wall. Switch state: clockwise (valve, counterclockwise rotation valve open ( Right hand closed, open the left-handed. When bad watch, can observe motor fan blade rotation) 。 Correlation detection are: proximity switch, trip switch. Open detection are: only the proximity switch. Working principle: when the reducer output shaft rotation, it provided the torque and the tangential friction force on the valve stem of the torque value, generated by the torque by screw thrust is greater than the axial friction, therefore, when the limit position, the valve stem and spray pipe to do linear motion ( At this point the valve torque depends on the axial frictional force) 。 When the Industrial Valves stem movement to open the limit position, were stuck in a pole linear motion, torque at the upper end and the tangential friction can provide begin to spin, When the valve torque depends on the tangential friction force) , and then complete the black kettle and painted the wall work. Operation requirements: 1, each tank is equipped with two sets of spray valve, symmetrical arrangement, in order to avoid the dead zone caused by cooling water pipe and blender, improve the effect of the kettle. 2, in order to achieve better spray effect, should make steam pressure reaches 0. More than 6 mpa, painted the wall fluid should through the centrifugal nozzle ejector into the steam with fog, in case the wall coating liquid dc to the bottom of the kettle. 3, closed position bandwidth 10 mm, its opening is 175 mm. Commissioning requirements: 1, power line and control line, screw to the fixed point observation, right hand closed and open left-handed. 2, adjust the travel switch and proximity switch position, manual switch to close the valve with the limit ( Significant increase in torque at this time, if continue to roll, the Industrial Valves stem will spin around) On the basis of the valve stem to open the direction 3 - 5 mm, to contact action position. 3, alignment, press a knob, observation of valve, the valve should be smooth rotation of the open, after a little time, press stop button, so as not to damage the packing because of friction. The close button and see if the closed position in setting position, give valve 1. 6 mpa high-pressure water, repeatedly check closed position, the valve should not leak. Duck tail valve the duckling tail valve function, disperser is first, after adding initiator, adding additives. Big duck tail valve function: charging, Water) , feeding, PVC) 。 Working principle: polymerizer electric discharge valve, the renewal of the manual discharging valve replacement products, through power control, motor drive reducer in the rotation of the worm gear and worm and valve stem, valve plunger in the make up and down reciprocating linear motion, through the travel switch control plunger movement distance, achieve the purpose of valve, valve clearance, have the effect of material discharge. ( Note: regardless of open or close proximity switch and travel switch, detection of valve rev. Stop, double protection, in addition there are 90 seconds time limit switch, to protect the motor, so as to avoid motor burning stuck in the middle position. ) Structure: this valve by the explosion-proof motor, reducer and of valve and explosion-proof travel switch. Note: 1, the valves in the process of connected to polymerizer, not impact explosion-proof switch, because it choose a debug the valve position is fixed good, its mobile and dislocation is directly related to the working effect of the valve. 2, if found a valve leakage phenomenon, can be appropriately adjust the spring nut looseness, but remember don't too tight, in case the valve sealing ring clasp die plunger, motor load, the phenomenon of the motor burned. 3, such as found in the valve leakage occurs, it may be because the valve sealing ring have scratches and damage happens, then must replace the sealing ring in the valve. 4, such as a power source suddenly, valve and need to work at this moment, can adopt electric changed hands move way, the steps are: turn the hand wheel in the middle of the handle, until twist exactly, gently twist the end of the handle, and at the same time to turn the handwheel, feel the hand wheel load suddenly increases, the conversion is complete, using hand wheel control valve operation directly. 5, if you want to ensure that the valve is in good working condition for a long time, it is recommended to use the manufacturer every year during overhaul to normal maintenance of the valve, which add grease to reducer, valve decomposition clean, check whether there is any abnormal situation on internal components. Common faults: 1, the limit switch feedback in place: a, the valve not move; B, close to switch to move; C, the output of the DCS relay failures; D, program problem; E, the control circuit fault; F, close to switch is bad. 2, the valve not move: a, contactor adhesions; B, the power supply is broken; C, motor fault; D, electrical control circuit fault; E, application problems; F, DCS cabinet DO relay failures; G, insurance DCS cabinet control circuit.
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