Liquid Ejectors
Liquid Ejectors are simple devices that operate on the basis of the jet Venturi principle.
Liquid Ejectors typically have 3 connections
- 1. High Pressure(HP) Liquid Inlet
- 2. Suction
- 3. Outlet
During operation Liquid Ejectors are able to create a pressure differential across its Suction and outlet. Liquid Ejectors utilize the energy in pumped liquid entering from the HP liquid inlet to create this pressure differential.
This enables Liquid Ejectors to be used for creating vacuum / low pressure at its suction. The low pressure allows the Liquid Ejectors to suck liquids through the suction. The suction liquid mixers with the HP liquid inside the Ejector and gets pumped out from the Outlet. The discharge contains the mixture of HP liquid and suction liquid.
This phenomenon allows the Liquid Ejectors to be used for sucking and pumping Water, chemicals, acids, alkalis, slurries, sludges, etc
The amount of suction liquid sucked and the head difference between Suction and Outlet depends upon the size of the Liquid Ejector and the internal construction. Further the operating flows can be controlled by regulating the HP Liquid, Suction & Outlet Pressures.
Typical Applications
- Chemical Dosing
- Pit Draining
- Slurry Pumping
- Sludge Pumping
- Ballast water pumping
Features of Liquid Ejectors
- Custom designed models – ensures perfect fit for your application.
- Self Priming mode of operation
- Availability in multiple type of end connections – Flanged, Threaded
- Available in a large variety of materials
| Metallic | Non Metallic |
|---|---|
| Carbon Steel | PP (Poly-propylene) |
| Stainless Steels SS 304 / SS 316 | PTFE (Poly-tetra-fluoro-ethylene) |
| Duplex & Super Duplex Stainless Steel | |
| Exotic metals (Hastelloy, Inconel, Titanium) |
Benefits of Liquid Ejectors
- Static Device without any moving parts – ensure long reliability and maintenance free operation.
- Tolerate entry of solids particles into the ejector – avoids abrupt breakdowns.
- Small & compact size – allows installation in tight spaces & difficult to access areas.
- Silent Operation
- Non sparking operation – can be safely used in hazardous & flammable areas
- Manufactured in multiple materials – allows using the most cost-effective & chemically compliant materials for the application.
Frequently asked questions (FAQs) about Liquid Eductors:
A liquid eductor is a type of jet pump used to pump or mix liquids in industrial applications. It uses a high-velocity motive liquid to create suction and entrain the liquid or slurry into the eductor. The entrained liquid is mixed with the motive liquid and pumped out from the Eductor discharge.
A liquid eductor operates by directing a high-velocity stream of motive liquid (such as water) through a nozzle. This creates a vacuum that draws in the liquid or slurry from the surrounding environment. The mixed liquid then exits the eductor through a diffuser, where pressure is recovered and the mixture is discharged.
Liquid eductors are used in a wide range of industries including chemical processing, wastewater treatment, food and beverage production, mining, and agriculture. They are employed for liquid pumping, mixing chemicals, tank mixing, and conveying slurries or abrasive liquids.
Liquid eductors are simple in design, have no moving parts, and can handle corrosive, abrasive, or viscous liquids. They operate without electricity and are suitable for applications where spark-free operation is necessary (such as in hazardous environments).
Liquid eductors require a source of high-pressure motive liquid, which can add to operational costs. They may also have limitations in achieving high efficiency compared to centrifugal pumps for certain pumping applications.
Sizing a liquid eductor involves determining the required motive liquid flow rate and pressure drop across the eductor to effectively entrain and transport the liquid or slurry. Factors such as liquid flow rate, viscosity, specific gravity, and system pressure requirements influence the sizing process.
Liquid eductors generally require minimal maintenance due to their robust design and lack of moving parts. Regular inspection and cleaning of nozzles, diffusers, and inlet filters is recommended to ensure optimal performance and prevent clogging.
Liquid eductors are versatile and can handle a wide range of liquids including corrosive chemicals, abrasive slurries, viscous liquids, and wastewater. The material of construction and nozzle configuration can be selected based on the specific properties of the liquid being handled.
Yes, liquid eductors can vary in design based on the specific application and liquid handling requirements. Variations may include different nozzle types, materials of construction (such as stainless steel or PVC), and sizes to accommodate varying flow rates and liquid properties.
