Diaphragm metering pump pdf

Both hydraulic diaphragm pumps and mechanically actuated diaphragm pumps are available. By controlling two pumps with intelldrive technology, it is possible reduce the pulsation in comparison to the conventional triplex pump.

High-precision injection pumps adaptable to a wide range of flow rates, pressures and applications. Construction of Liquid end. Stroke length adjustment. PICK UP Flexible liquid mixing by precision control With Nikkiso-LEWA-specific intelligent drive technology, the servo motor controls the piston movement with its position information and has complex control over the discharge flow of the reciprocating pump.

Application Multi-function mixing of two liquids Feeding high-viscosity liquid Precision filling Wide turndown ratio Mixing two liquids with one pump. World's largest diaphragm process pumps. Triplex pumps for high-flow high-pressure process service with a sandwich diaphragm with breakage detector to ensure safety operation.

Both space-saving mono-block types and building-block types are available. The pumps in the pulse-less series feature pulse free operation and high-precision discharge flow with the use of designed cam drive and fine-tuned check valve. Cleanability Designed to reduce dead space to a minimum and surface-finished smoothly by electrolytic polishing to improve its detergency performance, the unit can be Capable of CIP and SIP with better cleanability by minimized dead volume and electro polished smooth surface.

Our Offices. Contact Us. Find a Sales Rep. Milroyal D. PH Model. Side-Entry Mixers. Electronics and Metering. Valves and Accessories. Chemical Injection Package. Crude Oil Storage. Power Generation. Renewable Diesel. Catalyst Injection. Indoor Farming. Surface Water Treatment. Agriculture Indoor Farming. Potable Water Surface Water Treatment. A Step-by-Step Introduction The metering pump is a positive displacement chemical dosing device with the ability to vary capacity manually or automatically as process conditions require.

Metering Pump Characteristics 1 The pumping action is developed by a reciprocating piston. Liquid End Designs Part I The liquid end, which is referred to as the wetted part of the pump, is selected to meet the specific service conditions of the application. First, imagine that painful injection. An injection syringe is in fact the basic form of a diaphragm pump. When the piston is pulled back as shown in Fig.

When the piston is pushed forward, the liquid is discharged through the injection needle at the tip of the cylinder. The liquid enters and exits from the same point with an injection syringe, but let's look at a model that has separate entry and exit points. In this example, the entry and exit flow paths are both circular. Would the cylinder suck in liquid when the piston is pulled outward in Fig. The answer is no. Even when the piston is moved outward, only air is sucked in from the upper side of the cylinder without pulling up the liquid.

Now, we will place a spherical check valve on the hole where the air entered in Fig. Then, as shown in Fig. If the check valve is very light, some liquid may be discharged, but mostly it will return to the tank.