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Maintenance tips for flat bottom steel silo solenoid valve

Three major maintenance issues for the solenoid valve of the flat bottom steel silo discharge system

In modern agricultural storage management, the intelligent operation of flat-bottom steel silo has become the norm. Among these operations, the solenoid valve of the discharge system is a core component for remote control. Its stability and reliability directly affect the efficiency and safety of storage operations. As a key link between operational commands and physical execution, the solenoid valve’s precise control is crucial for the smooth flow of grains and other materials.

However, due to the complex and variable working environment, including the pressure generated by the grains inside the silo and external environmental factors, solenoid valves are prone to damage. Therefore, routine maintenance is essential. Here, we will delve into three key maintenance tasks for the solenoid valve in the discharge system of flat-bottom steel silo to provide comprehensive and practical guidance for storage managers.

Detailed Inspection of Solenoid Valve Coil and Plug

The normal operation of a solenoid valve relies on the good condition of its coil and plug. To ensure the solenoid valve can accurately respond to remote commands, it’s recommended to perform a detailed inspection of the solenoid valve’s coil and plug every fifteen days. Specific steps are as follows:

Coil Suction Test

Use a thin iron tool (such as a 30 cm long, 14-gauge iron wire) to gently touch the top of the solenoid valve coil while it is energized. Observe for a noticeable suction reaction. If the suction is normal, the coil is functioning well; if there is no suction, the coil may be damaged or the plug may have poor contact, requiring further inspection and troubleshooting.

Sound Diagnosis

Listen carefully for a distinct “click” sound when attempting to switch the solenoid valve. A clear sound usually indicates that the internal rubber diaphragm has moved correctly and the coil is working normally. Conversely, if there is no sound, the coil may be faulty or the diaphragm may be stuck, necessitating further diagnosis and treatment.

Regular Inspection of Rubber Diaphragm and Spring Assembly

The rubber diaphragm is a crucial component of the solenoid valve, directly affecting its sealing and performance. Therefore, it’s recommended to conduct a comprehensive inspection of the rubber diaphragm and spring assembly every six months.

Diaphragm Aging Assessment

Check for signs of aging on the rubber diaphragm, such as hardening, cracking, or deformation. If severe aging is found, replace the diaphragm promptly to ensure the solenoid valve’s sealing and longevity.

Spring Assembly Check

Verify that the spring assembly’s elasticity is sufficient. If there are no foreign objects in the valve body but leakage occurs, it is likely due to insufficient spring force. In this case, adjust or replace the spring assembly to restore normal solenoid valve operation.

Maintenance tips for flat bottom steel silo solenoid valve

Cleaning of Foreign Objects and Anti-Freezing Measures in the Valve Body

Foreign objects and water accumulation in the valve body are major hazards affecting the normal operation of solenoid valves. Especially in northern cold regions, low temperatures in winter can cause freezing inside the valve body, hindering diaphragm movement and affecting discharge efficiency. Therefore, it is crucial to clean foreign objects and implement anti-freezing measures in the valve body every six months.

Cleaning Foreign Objects

Regularly check for foreign objects in key areas of the valve body, such as the rubber diaphragm’s fixed groove. Immediately clean any detected foreign objects to prevent blockage or leakage.

Anti-Freezing Measures

Pay special attention to the insulation and anti-freezing of the valve body during winter. Implement measures such as adding insulation layers and regularly draining accumulated water in the valve to prevent freezing. For frozen valves, use appropriate heating methods to melt the ice and ensure thorough cleaning before putting them back into use.

Conclusion

Maintaining the solenoid valve in the discharge system of flat-bottom steel silo is crucial for smooth storage operations. Regularly inspecting the solenoid valve coil and plug, rubber diaphragm, and spring assembly, as well as cleaning foreign objects and taking anti-freezing measures, can effectively extend the solenoid valve’s lifespan, enhancing the efficiency and safety of storage operations. We hope this guidance provides valuable reference and assistance to storage managers.

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