Abstract
After briefly recalling the main problems that arise in the study of globe valves for alternative pumps, a methodology has been set up in order to refine the design. The obtained method has the advantages of simplicity and independence from empirical diagrams. In summary, from the obtained equation, the suitable values of the parameters can be deduced, based on the assigned data (capacity Q0 and number of rounds n) of all the dimensions of the valve or of the valves. Depending on the parameter values, it is possible to identify the most suitable kind of valve: a single dish-shaped valve, a ring valve, a valve with several rings or a group of valves.
Highlights
Automatic valves for suction and delivery are the most important components of a piston pump, since the wear and locking of a valve, in addition to greatly reducing capacity, can cause serious deformations of the piston rod
As regards the plunger effect of the valve, we examine vs, and vv in the function of φ, supplied respectively by (2) and (22)
While the (30) is useful for the completely new design of a valve, the considerations relating to the products Q0 n and n·hmax are extremely useful for the adaptation of valves already designed for load conditions which are rather different to those assigned
Summary
Automatic valves for suction and delivery are the most important components of a piston pump, since the wear and locking of a valve, in addition to greatly reducing capacity, can cause serious deformations of the piston rod. It itis is interesting to show the maximum valve opening on the pump but not onbut individual factors (run, area(run, of the piston number of the round the crank), singly capacity not on individual factors area of theand piston and number of theofround of the crank), considered, that determine the pump singly considered, that determine thecapacity. Of all these issues, very little isisreported reportedin inthe thecurrent currentliterature.
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