ABSTRACT
Through the design of the ceramic plunger pump for hemodialysis, the mathematical model of the water film of the plunger pair of the ceramic plunger pump was built. The distribution characteristics of the speed and pressure of the water film of the plunger pair were analyzed, and the temperature distribution characteristics of the water film surface were obtained. The effects of inlet pressure, inlet temperature, rotational speed, and chamber temperature on the water film temperature of the plunger pair were studied. Experiments and analysis show that the closer the temperature of the plunger pair is to the inlet of purified water, the smaller the temperature change. The farther the ceramic plunger rod is from the inlet of purified water, the greater the temperature change, and the main influencing points are concentrated inside the plunger pair. Therefore, maintaining a certain amount of purified water temperature, pressure, and flow rate for lubrication is crucial for the service life of ceramic piston pumps.
KEYWORDS
PAPER SUBMITTED: 2023-12-13
PAPER REVISED: 2023-12-21
PAPER ACCEPTED: 2024-01-05
PUBLISHED ONLINE: 2024-03-10
THERMAL SCIENCE YEAR
2024, VOLUME
28, ISSUE
Issue 3, PAGES [2459 - 2468]
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