There are stationary and automobile piston concrete pumps. Stationary ones are mounted on a carriage and delivered to the construction site in the back of a truck or as a trailer. The automobile ones have their own courses, as they are mounted on a chassis and, as a rule, a movable boom of several sections with pipes fixed on it, through which building mixtures are supplied under pressure. As the name implies, the pump itself has pistons, under the action of which the necessary pressure is created. This type of equipment is distinguished by reliability and high productivity, which can reach 170 m3 per hour. Most of these machines have electronic feed rate control, which allows solving various problems in modern construction. A stationary piston concrete pump is designed on the same principle as an automobile one, but does not have a movable boom. Together with a route of pipes and hoses, it is assembled separately, which requires additional labor and significant financial costs. Rental of stationary equipment becomes profitable only if it is necessary to carry out monolithic work at a very high altitude for a long time.
The Piston-Type Pumps advantages consist in that they can pump concrete large volumes to various distances or heights.
The reciprocating piston of one discharging cylinder creates a vacuum, the medium from the feed funnel is sucked into the cylinder. At the same time, the advancing delivery piston pushes the contents of the other delivery cylinder through the transfer tube into the delivery line. At the end of the stroke, the pump switches, i.e., the transfer tube turns in front of the other filled pressure cylinders, and the pressure pistons change their movement directio