A waterway welded stuffing box

Abstract

The invention relates to a water channel welding type stuffing box. The water channel welding type stuffing box sleeves a piston rod between two flanges and comprises stuffing box bodies which are tightly arrayed, and stuffing rings arranged between the adjacent stuffing box bodies, wherein each stuffing box body is of a hollow circular disc shape and an annular water channel is formed in each stuffing box body; a water inlet water channel and a water outlet water channel, which are communicated with the annular water channel, are formed in the left and right sides of each stuffing box body; the water inlet water channels and water outlet water channels of the two adjacent stuffing box bodies are in butt joint so that a circulating water channel for cooling water to flow is formed between all the stuffing box bodies; O-shaped rings for sealing are arranged at the butt joint parts of the water inlet water channels and water outlet water channels of the two adjacent stuffing box bodies; an annular groove is formed in each stuffing box body and each stuffing ring is arranged in the corresponding annular groove so that the piston rod is in sealed connection with the stuffing box bodies. Compared with the prior art, the water channel welding type stuffing box has the advantages of reducing detachment and overhauling difficulty, saving time, improving the efficiency and the like.

Description

technical field [0001] The invention relates to a stuffing box, in particular to a waterway welded stuffing box, which is mainly used in a horizontal reciprocating piston compressor. Background technique [0002] The Chinese invention patent with the application publication number CN101985922A discloses a stuffing box of an oil-free reciprocating compressor. The stuffing in the sealing chamber includes an obliquely cut three-lobed flat seal ring arranged side by side from the cylinder side to the crankshaft side, and a three-lobed flat sealing ring. Plane locking ring and a choke ring; the packing located in the sealing chamber of the cylinder side accounting for 1 / 3-1 / 2 of the total is provided with an unloading groove, and the unloading groove includes a three-lobe flat seal ring arranged radially on the end face of the cylinder side of the oblique cut At least one inner unloading groove and at least one outer unloading groove arranged radially on the crankshaft-side end s...

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned patent discloses a relatively common stuffing box structure for reciprocating compressors at present, but for the stuffing box of the above-mentioned form, generally when the cooling water is passed, the stuffing box is sealed by waterway grinding, and the stuffing box is sealed by a full-circle O-ring. Difficult to disassemble and repair

Images