Small water pump for water drilling rig engineering drill

In this video we assemble a DIY micro drill rig (tiny DC motor + drill bit + frame) and a submersible water pump, then test drilling a small “well” and pumping water through tubing. I explain the mechanism, torque limits, and 3 upgrades for better performance. [pdf]

Yueyang air compressor screw type model list

Let me explain how a rotary screw element is built up. See this example picture of an oil-free screw element. Compressor element (oil-free type). Photo: Atlas Copco Of course, we see the two rotors (male rot. [pdf]

Photovoltaic support type down-the-hole drilling rig

This DTH drilling rig is specifically designed for photovoltaic foundation pile holes. It is equipped with an 86kW engine and a high-efficiency desert air filter, supporting a maximum drilling diameter of 500mm. [pdf]