Reciprocating air compressor W series oil-free lubrication assembly structure and working principle Reciprocating air compressor W series oil-free lubrication assembly consists of packing assembly and piston assembly, including: 1) fuselage; 2) piston rod; 3) cylinder Base; 4) stuffing box; 5) piston ring; 6) piston body; 7) cylinder block; 8) cylinder head; 9) nut packing assembly set off oil) oil retaining, oil blocking) scraping oil, choke) The guide is integrated into one, and the principle is as follows: (1) The oil cut-off mechanism is formed by the oil-breaking ring and the oil-breaking ring box to prevent the oil in the fuselage from entering the cylinder. (2) The oil scraping mechanism is composed of the oil scraping ring and the packing box, so that the oil of the piston rod can be completely removed without entering the cylinder. (3) The choke seal mechanism is formed by the choke ring, the packing box and the sealing ring in the packing box, thereby achieving the purpose of sealing and preventing the air leakage. (4) The front and rear guide sleeves and the choke ring form a guiding and supporting mechanism with a length of about 100 mm, which has good guiding performance and just the right supporting ability.
The piston assembly is mainly composed of a piston rod, a piston body, a piston ring, etc. The principle is mainly to utilize the gas inflation compensation technology, that is, the piston ring and the piston body blow the piston ring during the movement, and the piston and the piston ring groove A gas ring is formed inside, and the piston body is floated in the center of the cylinder under the action of the pressure gas, so that the piston body does not contact the cylinder block, and the piston and the piston rod are all changed to aluminum alloy (the weight is reduced by about 2/3) And still use two piston rings, the piston ring uses a composite material which is both wear-resistant and has a small friction coefficient, and the width thereof is correspondingly narrowed, so as to reduce the contact area between the piston ring and the inner wall of the cylinder as much as possible, thereby greatly reducing The frictional resistance of the piston ring running in the cylinder is very beneficial to reduce the working temperature of the machine, which is enough to ensure that the piston does not have a fever when the cylinder is running, and does not produce the phenomenon of pulling the cylinder or burning the cylinder.
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