Self-Cleaning Pump Vault Using Venturi Effect Flushing

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Solution Overview

Problem

Wastewater treatment systems face issues with solid particles clogging pathways and damaging equipment, as existing solutions require manual shutdown and cleaning to remove buildups, which is inefficient and not fully effective.

Innovation Solution

A self-cleaning discharge system utilizing a venturi effect flushing system to automatically return solid particles from the filter back to the tank, integrated with a wastewater treatment system, including a housing, filter, and discharge apparatus, which uses a venturi effect to induce flow and circular motion to remove particles without manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual cleaning of the filter is performed to remove solid particles, then the filter can be cleaned, but the system must be shut down and manual intervention is required

Engineering Contradiction:
Improvefilter cleaning effectivenessVSAvoidsystem operation continuity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system uses a venturi effect device that automatically cleans the filter without requiring manual intervention. The device creates a low-pressure zone that draws cleaned water through the filter, causing solid particles to be flushed off and returned to the tank, thereby enabling self-cleaning operation during continuous system operation

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The invention employs hydraulic principles by using a venturi effect device that creates pressure differential in the water flow. The device utilizes the existing water flow in the system to generate suction and flush solid particles from the filter, eliminating the need for manual cleaning operations

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Duration of action of stationary object

If the filter surface area is increased to extend filter longevity, then more filtering capacity is provided, but the time between cleanings increases without automatic cleaning capability

Engineering Contradiction:
Improvefilter operational lifeVSAvoidtime between manual cleanings
Core Design Contradiction:
Duration of action of stationary objectVSLoss of time

Solution Approach 1:

The automatic venturi cleaning system continuously maintains the filter surface without requiring manual intervention. The system creates a self-sustaining cleaning cycle where cleaned water is drawn through the filter, automatically removing accumulated solids and extending the filter's operational life without increasing maintenance time

Inventive Principle:
Principle #25Self-service

3Reliability

If solid particles are removed from the filter manually, then particle buildup is eliminated, but system shutdown is required

Engineering Contradiction:
Improveparticle removal effectivenessVSAvoidsystem operational efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The venturi effect device utilizes hydraulic pressure differentials to automatically remove solid particles from the filter during continuous operation. The device creates a low-pressure zone that draws water through the filter, flushing particles off and returning them to the tank, thereby maintaining system productivity while ensuring reliable particle removal

Inventive Principle:
Principle #29Pneumatics and hydraulics

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 system effectively prevents solid particle buildup, reducing the need for manual cleaning and extending the operational life of equipment by maintaining fluid flow and preventing overheating, while being easy to manufacture and install.

Implementation Method 1

A self-cleaning discharge system utilizing a venturi effect flushing system to automatically return solid particles from the filter back to the tank, integrated with a wastewater treatment system, including a housing, filter, and discharge apparatus, which uses a venturi effect to induce flow and circular motion to remove particles without manual intervention.

Methodology Applied
Scientific EffectVenturi effect: Venturi Effect

Data Source

PatentUS8002996B1Self cleaning pump vault for a septic tank
Publication Date: 2011.08.23 PICKNEY ROBERT J
  • US8002996B1 patent drawing
  • US8002996B1 patent drawing
  • US8002996B1 patent drawing

AI summary

A self-cleaning discharge system used with a wastewater treatment system. The wastewater treatment system includes a tank for collecting wastewater while the wastewater typically includes solid particles. The discharge system comprises a housing, a filter positioned in the housing, an effluent discharge apparatus positioned inside the filter, and a venturi effect flushing system positioned proximate to the bottom of the housing. The housing includes a perimeter and at least one intake aperture positioned in the perimeter to accept the wastewater. The filter is shaped to substantially restrict flow of particles into the filter and to the discharge apparatus. The discharge apparatus is in fluid communication with the wastewater in the tank and includes a discharge path to position to transport filtered wastewater outside of the tank. The venturi effect system is in fluid communication with the housing and the tank to return the particles restricted by the filter to the tank.