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Which faults often occur in the unidirectional solenoid valve how to solve?

2022-10-21 10:00:35

Solenoid valve as a very common mechanical parts, in many instruments have an important role, and different solenoid valves have very different effects and problems, and therefore, many users have different questions in the face of different solenoid valve problems, this issue is to focus on the solenoid valve in which the one-way solenoid valve in which the failure often occurs how to solve? As far as possible for everyone to solve the problem.

1, the output power control after the solenoid valve dynamic magnetic core does not absorb sound

Causes: (1) unconnected coil, (2) poor power connection or loose terminal, (3) power supply voltage is high or low, (4) short circuit or short circuit of the winding

Method: (1) check the current on the coil terminal box with an electric pen or multimeter, (2) open the coil box and tighten the wire terminal screws, (3) adjust the power supply, control system or upgrade the voltage regulator, (4) the use of a shift solenoid valve, its own gears are not turned on.

2, after the power to move the stove one-way solenoid valve magnetic core with sound absorption, but the solenoid valve is not open

Reasons: (1) liquid in the operating pressure or pressure differential outside, (2) there are impurities blocking or blocking the moving magnetic core and solenoid valve convergence plate

Method: (1) before the solenoid valve to reduce the liquid transmission pressure or lower the hydraulic lifting device, (2) remove the solenoid valve for cleaning and install the filter in front of the valve, (3) the replacement of the new solenoid valve

3, too much noise when energized

Causes: (1) spiral cover at the top of the coil loosening, (2) voltage fluctuations beyond the allowable tolerance, (3) liquid surface pressure or differential pressure exceeds the allowable value, (4) impurities in the magnetic isolation tube or in the adsorption surface of the moving iron core

Method: (1) water with normally open solenoid valve tighten the nut or install a soft pad underneath it, (2) adjust the supply voltage or increase the voltage stabilization device, (3) reduce the liquid discharge pressure before the solenoid valve or bring up the decompression equipment, (4) clean the isolation tube and power core

4, the coil temperature is too high

Causes: (1) the voltage is high or low, (2) too high liquid or surrounding temperature, (3) long time load or power supply use

Method: (1) adjust the supply voltage or increase the voltage stabilization device, (2) if the temperature does not exceed the standard, that is normal, (3) choose an energy saver components, or should be used in working conditions normally open state

5, cut off the power supply, the solenoid valve can not be closed or close the unclosed gas

Reasons: (1) solar one-way solenoid valve viscosity is too high and beyond the standard, (2) there are impurities blocked in the dynamic magnetic core and the valve in the jam, (3) spool seal due to hard debris scratch and damage, (4) return spring deformation or spring aging, (5) valve seat is scratched or broken by hard objects, (6) gasket off, defects, deformation, damage, (7) valve core damage, expiration of the use period

Methods: (1) order solenoid to accommodate high viscosity, (2) remove the solenoid valve, clean the internal parts, install the cartridge in front of the valve, (3) remove impurities, grind the convex surface, replace the seal or spool parts, (4) correct, stretch the spring or improve the torsion spring.


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