Endless Sieving Cloth with Suction Nozzle for Drilling Fluid Separation
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Solution Overview
Problem
Current sieving apparatuses used in the petroleum industry for cleaning drilling fluids face issues such as clogging due to agglomeration and adhesion of solid particles, leading to reduced efficiency and safety concerns from gas, vapor, and mist exposure during the separation process.
Innovation Solution
A sieving apparatus with an endless sieving cloth arranged around turning-rollers and a suction nozzle connected to a pumping device, which generates a fluid flow to separate solid particles from the fluid, reducing adhesion forces and allowing for the extraction of gas and liquid phases, while an enclosure system minimizes gas exposure and a stationary sieving cloth is used in conjunction for enhanced separation and reduced abrasion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional shakers are used for separating solid particles from drilling fluid, then separation function is provided, but clogging occurs due to agglomeration and adhesion of solid particles on sieve surface
Solution Approach 1:
The patent applies mechanical vibration through a shaker device that generates elliptical or circular motion of the sieving cloth, creating relative movement between the solids-containing fluid and the sieve surface. This vibration prevents solid particles from adhering to the sieve and reduces agglomeration, thereby preventing clogging while maintaining separation efficiency
Solution Approach 2:
The patent introduces a fluid flow system that generates airflow through the material on the endless sieving cloth. This pneumatic action reduces adhesion forces between solid particles and the sieve surface, preventing clogging and improving the reliability of the separation process while maintaining productivity
2Productivity
If solids-containing fluid is processed through sieving apparatus, then solid particles are separated, but gas, vapor, and mist exposure creates health and safety concerns
Solution Approach 1:
The patent extracts harmful gases, vapors, and mists from the processing environment by directing them through a suction nozzle connected to a pumping device. This removes the harmful factors from the workspace while maintaining efficient solid-liquid separation, protecting operator health and safety without compromising productivity
Solution Approach 2:
The patent introduces an enclosure system as an intermediary barrier between the separation process and the environment. The enclosure captures gases and vapors generated during sieving, channeling them through extraction systems, thereby mediating the harmful effects while allowing continuous efficient operation
3Reliability
If endless sieving cloth is used for separation, then adhesion forces are reduced, but device complexity increases
Solution Approach 1:
The patent merges multiple functions into a single integrated system: the endless sieving cloth combines separation function with adhesion reduction through its continuous motion and interaction with the fluid flow. The shaker device and fluid flow system work together in a coordinated manner, reducing overall system complexity despite the advanced features
Solution Approach 2:
The patent employs dynamic elements including the endless moving sieving cloth that rotates around turning rollers, and the fluid flow system that actively moves through the material. These dynamic components reduce adhesion forces through continuous motion while being designed to work together in a coordinated, manageable system
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus effectively separates solid particles from fluids, reduces clogging, improves cleaning efficiency, and minimizes health and safety risks by extracting gases and vapors, while also providing a cooling effect for the drilling fluid and reducing the footprint of the equipment.
Implementation Method 1
a suction nozzle (24) which is located proximate an underside of the endless sieving cloth (20) for the generation of a fluid flow through at least a portion of the material present on the endless sieving cloth (20)
Implementation Method 2
the suction nozzle being connected with a fluid-tight vessel which is evacuated using at least one vacuum pump, the gas phase of the fluid being arranged to be separated from the liquid phase of the fluid in the vessel
Implementation Method 3
a frame connected to a shaker device (18), to provide a shaking motion
Implementation Method 4
a suction nozzle (24) which is located proximate an underside of the endless sieving cloth (20) for the generation of a fluid flow through at least a portion of the material present on the endless sieving cloth (20)
Data Source
AI summary
This invention relates to a sieving apparatus and method for separating solid particles above a predetermined size from a fluid by carrying the solids-containing fluid across at least one sieving cloth in a frame connected to a shaking device for providing shaking motion. The sieving apparatus includes an inlet portion for receiving solids-containing fluid, a discharge portion for solids that have been carried across the at least one sieving cloth and an outlet portion for fluid that has passed through the sieving cloth. The sieving apparatus further includes at least one endless sieving cloth arranged for rotating around at least two spaced-apart turning-rollers, at least one being connected to a motor, and a pumping device in fluid communication with a suction nozzle located proximate an underside of the endless sieving cloth between two of the turning-rollers, to produce a fluid flow through at least a portion of the endless sieving cloth.