Concrete pump pipe is a new type of construction parts with the appearance of concrete pumps, Pump pipes are generally divided into three types, DN125, DN150 and DN80. And they also have their own high pressure and low pressure point. 125 type pump tube low pressure model is the diameter of Φ133 pipe, and the high pressure for the diameter is Φ140 pipe. The low pressure model of DN150 pump pipe is the diameter of Φ159 pipe, and the high pressure for the diameter is Φ168 pipe. The pipe head is a specially machined pipes joint, which is connected to the pipe body by welding. The connection of each pipe is connected by a pipe clamp which is processed by casting process.
Variable concrete pump reducer pipe is the import and export diameter is not the same, a large, small, because and external to connect, the interface is not the same, so to change the diameter, called the variable diameter tube.
1, changing diameter, pulse phenomenon will be improved, at the same time can change the import and export pressure, inlet diameter is mainly to improve the device cavitation margin; the outlet diameter is to reduce the pipeline construction cost. 2, the pump outlet diameter should be to reduce the export flow rate, increase the pressure bar! The export diameter is smaller than the import diameter to reduce the cost.
Pump outlet diameter is mainly to increase pump exit flow rate, reduce manufacturing costs, reduce volume and other elements. 3, import low pressure, export high pressure, avoid pump cavitation.
The inlet variable diameter of the pump is to avoid cavitation, and the inlet diameter is to change the kinetic energy of the flow into pressure energy. 4, the import of large exports are mainly: first, to avoid cavitation, two, increase the export head is to increase the pressure of the export of water sent higher and farther.