Valveless Self-Priming Pump Filtration Device
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Solution Overview
Problem
Current filtration devices with integrated pumps require manual and hazardous liquid drainage for filter replacement, leading to contamination, complexity, and prolonged operational suspension due to air removal and priming needs.
Innovation Solution
A filtration device with a valveless self-priming pump configuration, where the filtration unit is positioned above the self-priming chamber, allowing for easy filter replacement and elimination of air removal and priming steps, featuring a detachable cartridge filter and a magnet-coupling drive unit with a perforated plate for air separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a filtration device with integrated pump is used, then liquid filtration function is achieved, but manual liquid drainage is required for filter replacement which causes contamination and operational complexity
Solution Approach 1:
The filtration unit is positioned above the pump unit such that during normal operation, liquid accumulates in the filtration unit. When filter replacement is needed, the pump is stopped and the filtration unit is tilted to drain liquid automatically before filter removal, eliminating the need for manual drainage operations.
Solution Approach 2:
The filtration unit is arranged in a different spatial position (above the pump unit) and can be tilted at angles different from the pump unit's operating position. This dimensional change allows the filtration unit to drain liquid independently without affecting the pump unit's structure or requiring complex drainage systems.
2Reliability
If filter is submerged in liquid prior to drainage, then filtration function is maintained, but liquid dripping occurs during replacement which causes contamination and safety issues
Solution Approach 1:
Before filter removal, the pump is stopped and the filtration unit is tilted to drain all liquid from the filtration unit. This preliminary drainage action ensures the filter is completely dry before handling, preventing liquid dripping during replacement and eliminating contamination and safety hazards.
3Productivity
If pump operation is resumed after filter replacement, then filtration continues, but air removal and priming are required which increases operational suspension time
Solution Approach 1:
The filtration unit is positioned above the pump unit and contains a siphon tube that automatically drains liquid from the pump unit when the pump stops. This preliminary action ensures the pump unit is completely emptied of liquid before filter replacement, so when the pump is restarted, no air removal or priming is needed and operation can resume immediately.
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
Facilitates safe and efficient filter replacement without liquid dripping, reduces operational downtime by allowing immediate pump restart without air removal or priming, and enhances liquid handling capacity and self-priming efficiency.
Implementation Method 1
an impeller, a self-priming chamber, a discharge port from an upstream of a channel to a downstream thereof in this order
Implementation Method 2
inside of the self-priming chamber, a perforated plate for separating air and liquid is arranged
Data Source
AI summary
The present invention provides a filtration device combined with self-priming pump in which a filter replacement work is easy and safe, and removal of air inside of a pump and priming are not necessary. And this filtration device is characterized to provide with a pump unit, which is a valveless-construction self-priming pump without a check valve, including a suction port, a suction chamber, an impeller, a self-priming chamber, a discharge port from an upstream of a channel to a downstream thereof in this order, the suction port and the discharge port being arranged above the level of the suction chamber and the impeller, and a self-priming chamber arranged above the level of the suction port and the discharge port; a filtration unit arranged on a channel between the self-priming chamber and the discharge port and above the level of the self-priming chamber; and a filter arranged inside of the filtration unit and above the level of residual liquid inside of the pump unit at the time of suspending of the pump unit.