What are the precautions when using the solenoid valve of the walking forklift?
In recent years, the walking forklift is widely used in petroleum, chemical, pharmaceutical, textile, paint, pigment, coal and other industries. They are indispensable for cargo handling, stacking and short distance transportation in ports, freight yards, railways and warehouses. In the process of use, no matter how durable and high-quality the forklift is, it is inevitable that some failures will occur. In order to prevent the working efficiency from being affected by faults, the electric forklift manufacturer wants to talk with you about the precautions when using the solenoid valve in the hydraulic system of the walking forklift.
Before we talk about the precautions, let's briefly understand the solenoid valve of the walking forklift. Solenoid valve is an industrial equipment for controlling electromagnetism. It is an automatic basic element used to control liquid. It belongs to actuator and is not limited to hydraulic and pneumatic. It has two types: normally closed and normally open. The closed type is in common use, as its name implies, is a solenoid valve that is opened when power is on and closed when power is off. If it is necessary to open and close for a long time, the normally open type shall be selected. If the switching time is very short and the frequency is very high, it is recommended to use a direct acting solenoid valve with large diameter. The electric forklift manufacturer reminded that the general solenoid valve is not waterproof, and it is recommended to select the waterproof solenoid valve when necessary.
We should understand that the liquid in the pipeline of the walking forklift must meet the requirements of the solenoid valve of the selected model. The liquid temperature cannot exceed the calibration temperature of the solenoid valve. The liquid viscosity suitable for solenoid valves is usually lower than 20CST. In terms of working pressure difference, when the pipeline pressure difference is less than 0.04MPA, direct acting solenoid valve and multi-step direct acting solenoid valve can be selected. When the working pressure difference is greater than 0.04MPA, the pilot type or differential pressure type solenoid valve can be selected. The electric forklift manufacturer reminded that attention should be paid to whether there is a back pressure difference. If there is a back pressure difference, a check valve should be installed.
It should be noted that the solenoid valve of the walking forklift generally requires the medium to be clean. When the liquid cleanliness is poor, a filter should be installed in front of the solenoid valve. Pay attention to the flow diameter and nozzle diameter. The electric forklift manufacturer reminds everyone that in case of water hammer, the opening and closing time of the solenoid valve should be determined. Also pay attention to the influence of ambient temperature on the solenoid valve. Finally, pay attention to the VA value during AC starting.
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