Thick matter pump with a cleaning cartridge and blocking slide

In a thick matter pump including a material feed container, two hydraulically driven conveyor cylinders each having front-side openings opening into an inside of the material feed container, a pipe having a first end extending into the material feed container and being configured to swivel within said material feed container, the first end communicating alternately with the front-side openings, the pipe conveying thick matter from said conveyor cylinders to a desired location, a closable cleaning aperture arranged in a pipe wall of said pipe, the improvement wherein a cleaning cartridge is connectable onto an outside of the pipe wall, said cleaning cartridge is open on one side toward the cleaning aperture and has at least one of a compressed air connection and a pressurized water connection, wherein a blocking member closes off said pipe between said conveyor cylinders and said cleaning aperture, and wherein the cleaning cartridge is connected by a hinge in the area of the cleaning aperture to the pipe so that the cleaning cartridge is pivotable away from the cleaning aperture freeing access to the one side of the cleaning cartridge.

A thick matter pump including a material feed container, two hydraulically driven conveyor cylinders each having front-side openings opening into an inside of the material feed container, a swivelling pipe having first and second pipe ends, said first pipe end extending into the material feed container and being configured to communicate alternately in pulses with the front-side openings, a conveyor pipe having input and output ends, said input end being connected to said second pipe end, and a closable cleaning aperture arranged in a pipe wall of the swivelling pipe and adjacent the input end of the conveyor pipe, wherein a transporting pipe, which is open toward the cleaning aperture, is connectable from the outside to the pipe wall, wherein a blocking member closes at least one of the conveyor pipe and the swivelling pipe at the input end, and wherein movable slides are respectively at the front-side openings for at least partially covering the front-side openings so as to prevent air from entering the conveyor cylinders when the material feed container has a low amount of material.