Gear pumps for precise volumetric and gravimetric metering

Metering pumps for low viscosity media

The precision gear pumps of the CHEM series are preferred in metering applications due to their exact metering characteristics and high repeatability. Wherever exact metering without deviation is required, the CHEM series is the right choice. The already very good metering properties of the pump can be further refined by combining it with additional units. The range of applications is very diverse.

Examples of metering solutions with gear pumps from WITTE

The metering pumps of the CHEM series are extremely flexible in their range of application and can be easily combined with other units for absolutely precise metering tasks. Our customers use the CHEM series in conjunction with load cell technology or volume flow meters, for example. Fluid is metered either gravimetrically or volumetrically. Gravimetric dosing is extremely precise. Load cells are used to control the required speed of the pump and motor in order to meter the desired amount of fluid with maximum precision.

Example: Gear pump in combination with liquid metering differential balance:

  • Container
  • Pump and motor
  • Flexible compensator
  • Weighing platform

  • Container

    The product to be dosed is fed via the inlet into the product container, which is mounted on the weighing platform. The dosing pump conveys the product from the container to the outlet for further processing by the customer.

  • Pumpe und Motor

    The motor is mounted on the pump and receives the necessary signals from the weighing platform to determine the exact speed. The pump then dispenses the liquid from the tank via gravimetric dosing.

  • Flexible compensator

    The flexible compensator decouples the weighing system from the pump.

  • Weighing platform

    The weighing platform determines the weight of the entire superstructure, consisting of frame and tank. With the help of the weight signal and the Brabender control system, the required speed for the pump is determined in order to achieve uniform dosing of the liquid in the container. Once the container has been emptied to a defined minimum, it is automatically filled to a defined maximum. During the refilling process, the pump continues to dose at the determined speed.

     

[Translate to English:] WITTE Zahnradpumpe in Kombination mit Dosiersystem von Brabender