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Lutz Pumpen | Deutschland
Familienbetrieb seit 1954
+49 9342 879-0

How does a drum pump work for complete drum drainage?

With the help of a drum pump you have the possibility to empty a drum or another container quickly. But when the pump is switched off, the liquid, which is still in the pump tube at that time, runs back into the drum unhindered. Similar to drinking from a straw. Tremendous product losses are the result as the drums are not completely emptied. In addition, ten times higher costs can be incurred due to the costs of residual disposal, wastewater treatment and landfill pollution.

The principle of complete drum drainage

In order to prevent a liquid return, the pump foot is closed while the motor is still running by lowering the sealing pot inside the pump tube. Closing (lowering) or opening (lifting) is done by adjusting a small lever below the handwheel. This sealing pot thus prevents the liquid that has already been completely sucked in from flowing back into the drum. After switching off the motor, the pump tube with the retained liquid can be removed and put into the next drum. The residual liquid can also easily be emptied into a smaller vessel by opening the sealing pot.

Sealing cap is open

If the sealing cap is open, the liquid can be pumped.


A solution particularly for the chemical industry

Lutz Pumpen developed a special drum pump just for this industry. The pump tube for complete drum drainage is connected to the drive motor by its handwheel. It transmits its power via an elastic coupling to the drive shaft which runs well supported and sealed in a shaft guide tube. The shaft carries the impeller at the bottom, which pumps the liquid inside the outer tube upwards to the hose connection.

Sealing cap is closed

If the sealing cap is closed, a return of the liquid is prevented. Thus, the residual amount can be "taken" when changing the container.

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