The equipment for pumping concrete mainly consists of concrete pumps, delivery pipes and placing devices.
(1) Concrete pump. Concrete pump according to the principle of action is divided into hydraulic piston type, extrusion type and pneumatic type three. Hydraulic piston type concrete pump is to use the reciprocating motion of the piston to inhale and press out the concrete. Automatic Concrete Mixer loaded into the pump hopper, this time the discharge end piece valve is closed, the suction end piece valve is opened, under the action of hydraulic pressure, the piston to the direction of the hydraulic cylinder body to move, the concrete in the self-weight and vacuum suction under the action of the concrete pipe. Then, the piston moves toward the concrete cylinder body, the suction end piece valve closes, and after the press out end piece valve opens, the concrete is pressed into the pipe and transported to the pouring place. Squeeze type Medium-sized concrete mixer is to use the roller inside the pump room to squeeze the hose with concrete, and the hose is locally squeezed to push the concrete forward. Pneumatic concrete pump is compressed air as the driving force to make the concrete along the pipeline to the pouring place. Medium-sized concrete mixer according to the pump body can move, concrete pump can also be divided into fixed and mobile. Trailer concrete pump is a common stationary concrete pump. Fixed concrete pumps need to use other vehicles to drag it to the scene, it has a large conveying capacity, conveying height and other Diesel Concrete Mixer characteristics, suitable for high-rise buildings in the construction of Medium-sized concrete mixer projects. Mobile concrete pump truck is the concrete pump installed in the car chassis, according to the need to drive to the construction site at any time for operation.
(2) Concrete pipe. Diesel Concrete Mixer conveying pipe is pumping concrete operations in the important supporting components are straight, elbow, conical pipe and pouring hose. Straight pipe, pipe diameter to 100mm, 125mm and 150mm three kinds of main, straight pipe standard length to 4.0m main, and another 3.0m, 2.0m, 1.0m and 0.5m four kinds of pipe length as the adjustment of the length of the pipe with. Bend angle of 15 degrees, 30 degrees, 45 degrees, 60 degrees, 90 degrees of five, in order to adapt to the needs of the pipeline to change direction. The length of Diesel Concrete Mixer conical pipe is generally 1.0m, which is used for the Diesel Concrete Mixer connection of two different pipe diameters. Pouring hose connected to the exit of the pipe, in the case of not moving the steel dry pipe, can expand the range of fabric.
(3) Fabric device. Tilting Drum Concrete Mixer pump material supply must be continuous, and conveying a large amount, therefore, in the pouring place should be set up in order to spread the conveyed concrete or directly poured into the mold, thus reducing the heavy physical labor, give full play to the use of Tilting Drum Concrete Mixer pump efficiency. Placing device consists of rotatable and retractable boom and conveying pipe, which is commonly known as placing rod. According to the different support structure, the fabric pole can be divided into two categories: independent and automobile type. Concrete pumps installed in the car will become a Automatic Concrete Mixer truck, the car is also equipped with a retractable or Automatic Concrete Mixer zigzagging "fabric rod", the end of which is a hose, the concrete can be sent directly to the pouring place.
