A complete gear pump including motor, reducer, coupling and pump head several parts, the pump head part of the pump housing, front and rear side cover, gear shaft, sliding bearings and shaft seal composition.High temperature gear pump work rely on the main, Driven by the engagement of the driven gear changes in the volume of work to transport the melt.Working volume by the pump body, gear tooth groove and side plate features bearing composition.
When the gear rotates, the melt enters the tooth spaces of the two gears of the suction chamber. As the melt rotates from the two sides into the discharge chamber, the re-engagement of the gears causes the melt in the tooth spaces to be squeezed out of the discharge chamber To the outlet pipe.As long as the pump shaft rotates the gear, the melt is pressed and delivered to the outlet side so that the pump outlet can reach a very high pressure and the flow rate has little to do with the discharge pressure.
High temperature gear pump routine maintenance
(l) Pump disassembly and cleaning, heating, cooling, starting and stopping should be strictly in accordance with the provisions of the operation to avoid undue losses.
(2) Care should be taken to maintain the stability of the population pressure of the booster pump so that it has a stable volumetric efficiency to facilitate the operation of the pump itself and the stability of the downstream spinning quality.
(3) The negative pressure of the packing shaft seal pump should keep the packing box pressure higher than the outside atmospheric pressure.If the back pressure is reduced, the packing box pressure should be adjusted in time, otherwise it will make the pump inhale the air and cause the tape strip to break Granules lead to pelletizer discharge.
(4) should always check the temperature of the heat medium jacket to ensure that the body and the front and back cover of the heat medium temperature to be consistent.
(5) Each time the output of gear pump is increased, the output, speed, output, inlet pressure and current value should be recorded. The data should be compared before and after, and careful analysis should be made so as to find the abnormal and timely treatment as soon as possible.