Dosing systems: Going against the current

A proportional dosing system, such as the LDT Dosatron, works with a volumetric hydraulic motor and enables the continual injection of the liquid or soluble concentrate. Connected to the water supply system, its only driving force is the water pressure. The concentrate is drawn in independently and mixes with the drive water. The resulting solution flows through the dosing system. The dosing quantity always stays proportional to the water throughput, as per the manually set dosing rate, even if there are throughput or pressure fluctuations in the water supply system. The pipe lengths have no effect on the dosing accuracy, allowing the unit to be installed wherever required. 

Operating principle

The proportional dosing system combines the functions of a water meter, dosing feeder and mixer in a single unit. The continuous and immediate mixing in the dosing system's mixing chamber is a special feature that ensures a homogeneous and ready-to-use solution for immediate use, for example to apply a cooling lubricant solution.

Depending on the particular unit, the performance range of the Dosatron proportional dosing system ranges from a maximum of 0.7 to 20m³/h at operating pressures of 0.12 to 10 bar and a dosing rate of 0.03 to 25%.

The high dosing accuracy and reproducibility of ±3% (according to the API 675 standard) is an economic advantage for the operator, as more highly concentrated media can be used. The design does not allow overdosing to occur. 

Due to the simple design of the proportional dosing system which has just a few components, the unit is very maintenance-friendly and easy to handle. A wall holder for easy mounting and a suction tube are included in the scope of delivery.

Dosing

An electrically-powered piston or membrane dosing pump feeds the required dosing quantity into the process flow according to the set stroke or pulse rate. The LDT Dosatron proportional dosing system, can be customised to specific systems. Units are easy to install, have short delivery times, high dosing accuracy and independently compensate for system fluctuations caused by temperature, pressure, flow rate, suction lift and viscosity.

Innovative ideas are needed to increase the energy efficiency of machine tools. I believe the LDT Dosatron proportional dosing system for cooling lubricants contributes to this objective considerably, as it doesn't need electricity to work and also offers high dosing accuracy and ease of use. Alongside the cost savings of not having to install electrical cables and due to the energy savings from the hydraulic motor, the dosing system provides high system availability thanks to easy maintenance and flexible servicing. LDT Dosiertechnik believes short delivery times and a good price:performance ratio make the LDT Dosatron proportional dosing system a sound investment.