Description

Structure features of this compressor:

• There are two columns and four columns of symmetric balance type D.

Product Specifications

Compressor technical features:

1) The lower body is U-shaped, with the upper cover of the screw body, easy access to the main bearings, and crankshaft pin bearings. The middle body and the cross-section are integrated with the body, which has a strong grid-like distribution of gears that support the main bearing, which ensures the exact alignment of the bearings.

2) Crankshaft: A fixed rotating crankshaft with the main bearing between each pair of crankshafts. The crankshaft is made of forged steel and is free from stress and heat treatment. Each crankshaft pin is well polished. There is an oil passage in the crankshaft between the neck of the main bearing and the adjacent crankshaft pin.

3) Cylinder materials include ball iron, cast steel, welded carbon steel or stainless steel, and forged steel.

4) Pistons are made of cast iron, forging steel, aluminum alloy, and other materials, and piston rod alloy steel and stainless steel are made to meet different applications. The total yield strength of the piston rod is at least 517MPa. Depending on the need, the piston rod can be turned off at high frequencies, the roughness of the pressure filler surface, and the area of ​​the oil scraper ring is 0.2 to 0.4 m.

5) Body lubrication mechanism: oil from the body oil tank to the crankshaft gear oil pump. The oil pump drains and oil filters through an external cooler and then returns to the main bearing collection pipe, which is a pipe that is poured into the bottom of the body. The oil is transferred from the main bearing basin pipe to each main bearing through drilling holes in the chamber, through the passage in the crankshaft to the crankshaft pin bearing. The inlet hole in the connecting rod carries the oil from the crankshaft pin to the cross-pin bush located at the tip, then to the cross-pin, then to the cross-head, and from there up and down. Cross-slip After lubricating the parts, return to the oil tank and continue the cycle. Motor auxiliary pumps are used to lubricate the bearing surface and pressurize the lubrication system before starting. Auxiliary pumps are also used as a backup in case of failure of the main oil pump.