What are the use, installation methods and inspection techniques of solenoid valves in the freezer?

When adopted, it should be equipped with a miniature solenoid valve pipe diameter of the same specification as the pipe according to the size of the freezer refrigeration equipment pipe. The information of the solenoid valve oil circuit board should be in full compliance with the core material of the pipeline; the working standard voltage should be in full compliance with the power supply voltage.

Installation standards and methods of solenoid valves in cold storage

There are two types of solenoid valves used in the freezer, single type and flat type. The installation requirements of the two types of solenoid valves are basically the same. The installation should be carried out according to the following procedures:

(1) Align the hoses on both sides at the beginning, connect the parallel surfaces of the inner holes vertically, and accurately position them by welding to ensure the sealing performance of the solenoid valve.

(2) In order to better prevent internal products from being damaged by heat, disassemble the oil circuit board, and then carry out electric welding. After electric welding, the welding slag and metal oxide should be cleaned and tidy to avoid blockage of the safety passage.

(3) Check and eliminate the burrs or dirt on the sealing line at the connection position of the proportional pressure reducing valve and the proportional solenoid valve to prevent the soft aluminum block from being scratched and the sealing is not tight.

(4) When the electromagnetic induction proportional pressure reducing valve is connected with the proportional solenoid valve, it is not necessary to move the side too large, otherwise the five-hole aluminum block inside will be biased, which will cause the buried hole to shrink or block and cannot be turned on or off.

(5) The magnetic isolation waterproof casing flange piece and the proportional pressure reducing valve high pressure gate valve rely on the sealing performance of the sealing gasket. When the screw is tightened, the angle is tightened. If the side shift is not balanced, it may cause leakage.

Solenoid valves of different specifications should be used for different working positions. For example, the solenoid valve of the refrigerant pipeline cannot be used in the tap water pipeline, because the water will accumulate and there will inevitably be solid residues, which will easily block the small equalization hole on the pulse damper. The solenoid valve on the oil return pipe of the lubricating oil filter must be hoisted to prevent the fluctuation of the working pressure of the exhaust pipe of the refrigeration compressor from affecting the opening and closing of the auxiliary valve. The solenoid valve used for the breathing tube is very easy to condense water, so it is necessary to use a waterproof solenoid or a closed solenoid valve. When the working temperature is higher than 55°C, heat-insulating electromagnetic coils should be used.