Pipe-Integrated Scoop Pump for Low-Level Viscous Media Transfer
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Solution Overview
Problem
Existing delivery devices for viscous media are unable to operate effectively when the medium level drops below the scoop's edge, preventing further delivery.
Innovation Solution
A delivery device with a scoop device and pump device arranged inside a pipe, featuring a foot valve and piston chamber with a movable piston, allowing for continuous medium delivery by controlling the inflow and outflow through check valves and a piston rod, and utilizing an oscillating drive for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a traditional scoop device is used for delivering viscous medium, then the device structure is simple, but the delivery stops when the medium level drops below the scoop edge
Solution Approach 1:
The delivery device is nested inside a pipe that extends into the vessel, with the scoop device and pump device arranged sequentially within the pipe. This nested configuration allows the system to reach low medium levels while maintaining a compact structure that doesn't significantly increase external complexity.
Solution Approach 2:
The foot valve is pre-positioned at the pipe end to control medium inflow before it reaches the pump device. This preliminary control mechanism ensures that medium is properly admitted to the piston chamber even when the medium level is very low, enabling continuous delivery operation.
2Productivity
If the scoop is positioned high to receive medium, then medium reception is effective at high levels, but delivery cannot continue when medium level drops
Solution Approach 1:
The piston device with movable piston creates dynamic pressure zones that actively draw medium through the foot valve and scoop device regardless of medium level. The oscillating motion of the piston dynamically controls fluid flow, enabling continuous operation as the medium level varies during delivery.
Solution Approach 2:
The foot valve acts as an intermediary mechanism between the vessel and the pump device, controlling medium admission independently of the scoop position. This intermediary valve ensures continuous medium supply to the piston chamber even when the scoop is positioned for low-level reception.
3Stress or pressure
If a pump device is added to generate delivery pressure, then delivery pressure is sufficient, but the device becomes more complex
Solution Approach 1:
The scoop device and pump device are merged into a single integrated delivery device housed within one pipe. The piston rod connects both the scoop device piston and pump device piston, combining their functions into a unified system that generates delivery pressure while maintaining structural compactness.
Solution Approach 2:
The single pipe structure serves multiple functions: it houses both the scoop device and pump device, provides the medium passage, and supports the foot valve. This multi-functional design achieves sufficient delivery pressure without proportionally increasing device complexity.
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
Enables the delivery of virtually all fluid medium from a vessel, including at low levels, with enhanced efficiency and pressure generation, preventing backflow and overload, and suitable for viscous media like grease.
Implementation Method 1
the scoop device comprises a foot valve, which is arranged at a second end of the pipe and which foot valve serves to control an inlet for an inflow of medium into a piston chamber
Implementation Method 2
the piston may comprise a piston valve, by way of which piston valve the inflow area and the discharge area of the piston chamber are or can be connected
Implementation Method 3
the piston, via a piston rod, is movable between a retracted position and an extended position inside the piston chamber by the delivery drive
Implementation Method 4
the delivery drive is embodied as an oscillating drive, in particular as a pneumatic motor
Data Source
AI summary
A delivery device for delivering a fluid medium having a delivery drive, a pump device and a scoop device. The delivery drive is arranged at a first end of a pipe, and the pump device and the scoop device are arranged inside the pipe. The scoop device includes a foot valve, which is arranged at a second end of the pipe and controls an inlet for an inflow of medium into a piston chamber. A piston, which sub-divides the piston chamber into an inflow area and a discharge area, is arranged in the piston chamber. The inflow area and the discharge area are or can be connected via the piston, and the piston, via a piston rod, is movable between a retracted position and an extended position inside the piston chamber by the delivery drive.