Reasons For Overload And Heating Of Sanitary Rotary Vane Pump Motor

Sanitary Rotary Lobe Pump is an important equipment for deep well water extraction. When in use, the entire unit is submerged in water to work. Extracting groundwater to the surface is domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship loading, and can also be used for fountain landscapes. Sanitary rotary vane pumps are used for hot spring bathing, and can also be used to extract groundwater from deep wells. It can also be used for water extraction projects such as rivers, reservoirs, and canals. It is mainly used for farmland irrigation and water for people and livestock in high mountainous areas. It can also be used for central air conditioning cooling, heat pump units, cold pump units, cities, factories, railways, mines, and construction site drainage. The general flow rate can reach (5m3~650m3), and the head can reach 10-550 meters per hour.

The reason why the motor of the sanitary rotary vane pump overheats and burns out: Some customers buy sanitary rotary vane pumps and use them directly without reading the instructions, causing the motor to burn out. The motor of the sanitary rotary vane pump needs cold water to cool it so that it will not heat up. Therefore, the sanitary rotary vane pump must be placed in water, and the water must cover the motor so that the motor can be cooled and the motor can extend its life.

1. When the sanitary rotary vane pump pumps mud, the overload caused by the increase in medium density. The measured medium density is greater than 1.3, and even reaches 1.5-1.6; while the motor power surplus coefficient is small (generally 1.05-1.2).

2. The pump body is silted up with sand, and the impeller is braked to cause overload, and the motor is running in a nearly blocked state.

3. The gap of the rotor shaft hole and the gap of the impeller mouth ring are filled with sand, causing the shaft to brake and cause overload.

4. In order to win the competition by lowering prices, some manufacturers artificially reduce the motor power.