What are the working principle of the hydraulic piston type cement concrete pump

Piston pump foot concrete application of the first, most are also the most viable concrete conveying equipment. Press the Power TransmissionWay mechanical, hydraulic and a hydraulic three forms. Mechanical because the body is bulky, noisy, complex transmission toAnd can not pump anti-clogging when clear shortcomings, has basically been eliminated. Hydraulic type currently used not by much, but it has noPollution, water medium and low cost, with water as the working medium of the development and application of valve and other components, it will become the futureDirection of development. Now widely used is a hydraulic piston concrete pumps.Hydraulic piston pump is divided into single-casing concrete cylinder two. Cylinder type in a single-casing structure is far more complex, but because it is the work of two cylinders alternately, so work is relatively continuous smooth delivery, high productivity, the use of full engine power, so, medium and large concrete pumps-cylinder type a.Works (a) a hydraulic piston concrete pumpsHydraulic piston pump concrete through the pressure oil pushes the piston, the piston rod pushing through the concrete cylinders working piston pressure concrete. It works according to the different distribution valves and control methods are different, the main difference in reversing the realization of the action. The following S pipe valve concrete pump as an example how it works.

As shown in the picture above, concrete cylinder piston master cylinder, respectively, 7,8 l, 2 piston rod connected to the role of the master cylinder pressure oil reciprocates a cylinder advancing, the other cylinder back; concrete cylinders communicating with the hopper outlet, the dispensing valve 10 to one end of the discharge port, and the other end connected via a splined shaft and the swing arm 11, in the role of swing cylinders can swing around.
1,2 master cylinder tank 3- 4- commutation means 5,6 7,8 concrete concrete cylinder piston dispensing valve 11- 10- 9- hopper swing arm 12 and 13 cylinder 14- spoutPumping concrete under the influence of the master cylinder pressure oil. Concrete cylinder piston 7 advance, concrete cylinder piston 8 back, while in the role of swing cylinders, dispensing valve 10 communicates with the concrete cylinder 5. Concrete cylinder 6 communicates with the hopper 9.Back when concrete piston 8, 9 inside the concrete hopper suction concrete cylinder 6: concrete cylinder piston 7 advance concrete concrete cylinder 5 is fed to the dispensing valve 10 after discharge.When the concrete cylinder piston stroke back to the terminal, triggering tank 3 commutation device 4, the main liquid, cylinder l, 2 commutation, while the swing cylinder 12,1 3 commutation, the dispensing valve lO and concrete cylinder 6 Connectivity. Concrete cylinder 5 communicates with the hopper 9, then back concrete cylinder piston 7, 8 forward. This cycle, in order to achieve continuous pumping.When the concrete pump pipe blockage or downtime occurs, it must put the pipeline in concrete withdrawn. At this time anti-pump operation, so that in the suction stroke of concrete cylinder and a dispensing valve in communication with the hopper in the concrete cylinders communicating push stroke, thereby withdrawing the pipeline in concrete hopper, as shown in picture below.