Patent ID: 11858037
Assignee: MOLTEN METAL EQUIPMENT INNOVATIONS, LLC
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  F | IPC B  F

Claim 0:
1. A molten metal pump system comprising:
(a) a molten metal pump having a plurality of pump structures that include: a rotor shaft, a motor shaft, a motor, a superstructure, a rotor, one or more support posts, and a pump base;
(b) a controller for controlling the speed of the pump or turning off the pump or sending a message to an operator or monitor;
(c) a vibration sensor on or in one or more of the plurality of pump structures, wherein the vibration sensor is configured to detect vibration and communicate the vibration to the controller; and
(d) a second vibration sensor on or in one of the plurality of pump structures different from the pump structure that includes the vibration sensor, wherein the second vibration sensor is configured to detect vibration and communicate the vibration to the controller;
wherein the controller varies the speed of the pump, turns off the pump, and/or sends a message to a monitor or operator, based on the vibration detected by the vibration sensor and/or the vibration detected by the second vibration sensor.