A Positive Displacement Pump and a Method of Fabrication Thereof

Technology: Positive displacement Pump

Industry/Applications: Automobile Industries, Manufacturing Chemicals, Energy/Infrastructure;

Market: The global positive displacement pumps market is projected to grow at a CAGR of 4.8% during 2024-2030.

In the present era, a centrifugal pump is a common example of non-positive displacement pump, & mainly used for low pressure and high-volume flow application however having issues related to not capable of achieving high pressure, therefore said pumps cannot be used in fluid power Industries.
Further, the positive displacement pumps are more complex and difficult to maintain than centrifugal pumps. Positive displacement pumps are less able to handle low viscosity fluids than centrifugal pumps.
Hence, there is a need to address the above issues in efficient manner.

The present invention describes a Positive displacement pump and a method of fabricating a positive displacement pump. (Refer Fig.1)
Said positive displacement pump comprising a housing characterized in that the housing comprises an auxetic structure of a predefined dimension and a driving unit configured to compress and decompress the auxetic structure, thereby resulting in pumping of the fluid.
Said auxetic structure material comprises hyperelastic material comprising at least one of thermoplastic polyurethane or rubber.
In addition to this, said driving unit comprises a motor, a crank and a load plate.
Further said method comprising a few steps mentioned hereunder:
Providing a housing comprises of an auxetic structure and a driving unit;
Compressing the auxetic structure by the driving unit in a lateral direction, resulting in Fluid flow into the housing via at least one inlet port; and
Decompressing the auxetic structure to discharge the fluid out of the housing via outlet port;
thereby resulting in pumping of the fluid.

Technical Perspective:

Claimed Patented technology provides an auxetic structure for pumping fluid.
Further provides a pump for transfer of fluid with low, medium, and high viscosity.
Simple design, and less rotating and reciprocating parts.
The flowrate changes with change in design parameters of the auxetic structure, possible to control the flow rate from milliliter/min to liter/min.
The material used in fabrication of auxetic structure is thermoplastic polyurethane (TPU), which is chemically inactive.
Provides suitable reactive chemical transfer.

Industrial Perspective:

Provide fabrication of a cost-effective pump for larger range of pressure and flowrate.

Prof. Somashekhar S Hiremath

Department of Mechanical Engineering

TRL-2/3

Proof of Concept ready

Technology Transfer