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What is the working principle of the screw pump? What is the stator in KNOLL screw pump?
2023-09-22 16:58:45
Screw pumps have similar characteristics to rotary or reciprocating pumps, such as piston pumps, diaphragm pumps, CAM pumps and screw pumps. Because of the movement of the rotor, they are also known as eccentric screw pumps. A common feature is that the sealing chamber has operational similarities, such as the ability to pump to high pressure at very low rates. The similarities between other pumps and screw pumps usually end there. Of all the types of pumps available, screw pumps are able to handle a wider range of fluid viscosities and characteristics than any other type of pump.
The unique design of the pump makes it suitable for a variety of pumping applications, such as conveying and metering when dealing with shear-sensitive, abrasive and viscous fluids.
The rotor is made of hardened alloy steel or stainless steel and is covered with a chrome coating to resist corrosion and wear materials. Certain types of liquids can affect chrome plating, and unchrome rotors should be used in these applications.
The stator is a metal tube with a molded internal cavity of synthetic or natural rubber.
When rotating, the rotor is tightly sealed with the flexible rubber inside the stator, forming a tightly sealed cavity to transport the liquid to the discharge port. Because of the tightly sealed cavity, the shape or size of the liquid does not change when pumped. The effect of a progressive cavity design is that the fluid moves at a very predictable and steady rate. The positive displacement of the pump begins at the moment of rotation of the rotor. The liquid acts as a lubricant between the pumping elements and should not dry out.
The reason for using screw pumps is because they have only one moving part, are durable and have a long service life. In operation, our pumps are primarily fixed flow pumps that provide long life and reliable service to transport viscous fluids. The abrasive fluid will shorten the life of the stator, but will help reduce wear by reducing the rotational speed. Mud can also be reliably pumped if the mud is viscous enough to form a lubricating layer around the particles and protect the stator.
At the point where the rotor touches the stator, the surface usually moves diagonally, so these areas need to be lubricated by the pumped fluid. This means that more torque is needed to start.
Since the pump operates without fluid, the stator may rapidly degrade, which is called "dry rotation."
The above content introduces what is the working principle of the screw pump,KNOLLKono screw pumpThe question of what the stator is. In addition, Shenzhen Oudejie Technology specializes in the sale of new imported KNOLL screw pumps and promises to sell products are new imported, while providing our customers with quotation, selection, product information and other services.
