To adjust the specific pressure is to adjust the compression size of the spring. If the size is too small, the adjustment thickness will be reduced. After the moving ring is installed, it should be able to move flexibly on the shaft. The length profile inspection and pressure test shall be carried out before use. The sealing rubber ring should be replaced during overhaul. The free length of the spring is denoted by A, the load it bears when the spring stiffness produces a unit compression is k, and the specified specific pressure is denoted by P. Before connecting the pump cover and the sealing end cover, carefully review the installation Submersible Borehole Pumps Manufacturers and positioning dimensions of the mechanical seal.. . After the moving ring is pressed against the spring, it should be able to bounce back freely, keeping the moving and static rings vertical and parallel. The size after compression is denoted by B, then P/A-13=k, and 13=A-e/k is obtained, which is the size of the spring after installation and compression.01mm.If the repaired dynamic and static rings are used, the sum of the height of the projections of the dynamic and static rings is not less than 3mm, and the height of a single projection is not less than 1mm, so as not to affect the heat dissipation. Check with a feeler gauge. The outer surface of the spring is clean and free of rust.20mm.Adjust the specific pressure of the end face of the pump mechanical seal: The specific pressure of the end face is an important parameter related to the sealing performance and service life, and it is related to the seal structure, spring size and medium pressure.05mm; check the clearance between the gland and the outer diameter of the shaft, and the surroundings should be uniform, and the allowable deviation of each point Greater than 0. If the size of the spring is too large after installation, the thickness of the adjustment pad can be increased between the spring seat and the spring
