Underwater trench excavator and pump device

摘要

A bottom trench excavator, a pump device, and a method for operating the bottom trench excavator are provided. A submarine trench excavator and pump apparatus includes first and second pumps and a trench excavation spray tool having first and second sections, wherein the first pump is a source of water. And an inlet for fluid connection to the first section of the jetting tool, the second pump having an inlet for fluid connection with a source of water And an outlet for fluid connection with the second section of the injection tool, wherein the outlet of the first pump allows a portion of the discharge flow of the first pump to pass through the second pump. The valve is fluidly connected to the inlet of the second pump by means of a valve that can be diverted to the inlet. [Selection] Figure 1