Common sense and flushing method of unbalanced multi-spring seal
1. The working principle of 58U mechanical seal:
58U mechanical seal is to rely on a pair or several pairs of rock wool plate surfaces perpendicular to the shaft to make relative sliding mechanical seals to keep fit under the action of fluid pressure and the elastic force (or magnetic force) of the mechanical seal compensation mechanism, and is equipped with auxiliary seals. Shaft seal device to achieve leakage.
2. Selection of commonly used materials for 59U mechanical seal:
Clear water; normal temperature; (dynamic) 9CR18, 1CR13 surfacing cobalt chromium tungsten, cast iron; (static) impregnated resin graphite, bronze, phenolic plastic.
River water (with sediment); normal temperature; (dynamic) tungsten carbide, (static) tungsten carbide
Sea water; normal temperature; (dynamic) tungsten carbide, 1CR13 surfacing cobalt chromium tungsten, rock wool plate cast iron; (static) resin impregnated graphite, tungsten carbide, cermet;
Superheated water 100 degrees; (dynamic) tungsten carbide, 1CR13 surfacing cobalt chromium tungsten, cast iron; (static) resin impregnated graphite, tungsten carbide, cermet;
Gasoline, lubricating oil, liquid hydrocarbons; room temperature; (dynamic) tungsten carbide, 1CR13 surfacing cobalt chromium tungsten, cast iron; (static) impregnated resin or tin-antimony alloy graphite, phenolic plastics.
Gasoline, lubricating oil, liquid hydrocarbons; 100 degrees; (dynamic) tungsten carbide, 1CR13 surfacing cobalt chromium tungsten; (static) immersion bronze or resin graphite.
Gasoline, lubricating oil, liquid hydrocarbons; containing particles; (dynamic) tungsten carbide; (static) tungsten carbide.
The purpose of O ring pusher seal flushing is to prevent the accumulation of impurities, prevent the formation of air pockets, maintain and improve lubrication, etc. When the temperature of the flushing liquid is low, the rock wool board also has a cooling effect. The main methods of flushing are as follows:
Internal flushing
1. Positive flushing of unbalanced multiple springs seal:
(1) Features: Using the sealed medium of the working host, the rock wool insulation board is introduced into the sealing chamber from the outlet end of the pump through the pipeline.
(2) Application: For cleaning fluid, P1 is slightly larger than P, when the temperature is high or there are impurities, coolers, filters, etc. can be installed on the pipeline
2. Unbalanced multiple springs seal backwash:
(1) Features: Using the sealed medium of the working host, it is introduced into the sealing chamber from the outlet end of the pump, and flows back to the pump inlet through the pipeline after flushing.
(2) Application: for cleaning fluid, and P into 3. Rinse all over.
