The invention relates to a thick material pump having a first delivery cylinder, a second delivery cylinder and an additional cylinder. The additional cylinder serves for bridging a transition between the first delivery cylinder and the second delivery cylinder. The thick material pump comprises a movable tube portion which forms a connection between the first delivery cylinder and an outlet of the thick material pump in a first state and which forms a connection between the second delivery cylinder and the outlet of the thick material pump in a second state. The movable tube portion comprises a switchable closure which is arranged between an inlet end of the movable tube portion and the additional cylinder. The thick material pump according to the invention makes it possible for a uniform material flow to be delivered in the direction of the pump outlet.

A pulsation-free wet spraying machine resolves the issue of pulsing during pumping of a concrete spraying machine. The wet spraying machine includes a frame, a pumping mechanism, a swing mechanism and a hydraulic system, wherein the pumping mechanism includes a hopper, a material chamber, a concrete feeding mechanism, an auxiliary feeding mechanism and a distribution valve, the hopper is disposed above the material chamber, the concrete feeding mechanism and the auxiliary feeding mechanism each include a hydraulic cylinder, a concrete piston and a concrete cylinder, the concrete cylinder of the concrete feeding mechanism and an auxiliary concrete cylinder of the auxiliary feeding mechanism are both connected with the material chamber, a discharge port is disposed on the material chamber, sealing between the distribution valve and the discharge port is provided by a sealing ring, the distribution valve is disposed inside the material chamber, a front friction plate and a rear friction plate are further disposed inside the material chamber, the swing mechanism includes a swing hydraulic cylinder, a mandrel, a swing arm and a swing hydraulic cylinder base, and the mandrel drives the distribution valve to swing. In addition, The pulsation-free wet spraying machine stably feeds a material, has a compact structure, and is wear-resistant.

A thick stock valve having a first through-opening, having a second through-opening and having a valve member associated with both through-openings. The valve member is mounted so as to be able to pivot about a pivot axis, wherein the valve member has a sealing face that is curved concentrically with the pivot axis. In a first state, the valve member releases the first through-opening and closes the second through-opening. In a second state, the valve member releases the second through-opening and closes the first through-opening. The valve member comprises a sealing part and a pivot part, wherein the pivot part is mounted so as to be able to rotate in the pivot axis and wherein the sealing part is connected to the pivot part via a connection structure.

The invention relates to a thick material pump having a first delivery cylinder, a second delivery cylinder and an additional cylinder. The additional cylinder serves for bridging a transition between the first delivery cylinder and the second delivery cylinder. The thick material pump comprises a movable tube portion which forms a connection between the first delivery cylinder and an outlet of the thick material pump in a first state and which forms a connection between the second delivery cylinder and the outlet of the thick material pump in a second state. The movable tube portion comprises a switchable closure which is arranged between an inlet end of the movable tube portion and the additional cylinder. The thick material pump according to the invention makes it possible for a uniform material flow to be delivered in the direction of the pump outlet.

An apparatus includes a pipe diverter valve housing and a pipe diverter valve. The pipe diverter valve housing includes a fixed housing part with inlet openings and a detachable housing part with an outlet opening. The detachable housing part is detachable from the fixed housing part, and the detachable housing part and the fixed housing part are pivotably connected to one another via a joint with a first pivot axis. The pipe diverter valve is mounted in the pipe diverter valve housing so as to be pivotable about a second pivot axis in front of the inlet openings and arranged to convey thick matter to the outlet opening of the pipe diverter valve housing.