High-load feedback thick oil pump

• Main Authors: ZHONG MIN, DENG QIWEN, YANG RONGRONG, CHEN YOUMENG, YI JIE, HE YIN
• Format: Patent
• Language: Chinese; English
• Published: 10.06.2022
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The utility model relates to a high-load feedback thick oil pump which comprises a gap bridge pipe, the upper end of the gap bridge pipe is connected with an upper coupling, and the lower end of the gap bridge pipe is connected with a lower coupling. An upper pump cylinder and a lower pump cylinder are arranged in the gap bridge pipe and connected through a pump cylinder reducing coupling. An upper plunger is arranged in the upper pump cylinder, the upper portion of the upper plunger is connected with a plunger upper valve cover, and a liquid outlet valve seat and a liquid outlet ball valve are arranged at the joint of the upper plunger and the plunger upper valve cover. A lower plunger is arranged in the lower pump cylinder, the upper portion of the lower plunger is connected with a plunger valve bonnet connector, and a plunger connecting valve bonnet is arranged between the plunger valve bonnet connector and the upper plunger. A liquid inlet ball valve and a liquid inlet valve seat are arranged in the plung