Suction Lance Axial Float Guidance via Linear Locking
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Solution Overview
Problem
Existing suction lances face challenges in maintaining axial movement of the float body over large distances and ensuring reliable operation, especially when elongated, due to deformation and production tolerances, which can impair the displacement movement and lead to potential damage.
Innovation Solution
A suction lance design featuring a tubular body with a hollow profile and a continuous, line-like locking device that extends along the axial length, providing multiple fastening points to securely attach the hollow profile to the tubular body, ensuring stable movement of the float body and preventing damage, while allowing for unhindered axial movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the suction lance is elongated to enable axial displacement of the float body over the entire filling height, then the float body can move freely along the axial extent for accurate filling level detection, but the suction lance becomes susceptible to deformation and bending that impairs float movement
Solution Approach 1:
The suction lance is divided into multiple segments: an outer tube, an inner hollow profile, and a float body. This segmentation allows each component to be optimized independently - the outer tube provides structural support while the inner hollow profile maintains a defined gap that guides the float body, ensuring reliable movement even in elongated configurations.
Solution Approach 2:
The suction lance employs a composite structure with the outer tube and inner hollow profile as separate components. This composite design provides both the length needed for full filling height coverage and the structural integrity to prevent deformation, as the nested configuration offers mutual support and stability.
2Reliability
If the hollow profile is connected to the outer tube at multiple points along the axial length, then the structural stability and float body movement reliability are improved, but the manufacturing complexity and assembly difficulty increase
Solution Approach 1:
The connection system is segmented into multiple discrete connection points distributed along the axial length. This segmentation provides stable guidance for the float body while allowing each connection point to be manufactured and assembled independently, reducing overall manufacturing complexity compared to a continuous connection.
Solution Approach 2:
The hollow profile is nested within the outer tube, with the inner profile connected to the outer tube at multiple points. This nested configuration provides structural stability and guidance for float movement while maintaining a compact, integrated appearance that simplifies handling during assembly.
3Ease of operation
If the suction lance is inserted through a narrow opening in the container lid, then the suction lance can access the container interior for liquid removal, but the float body may be damaged during insertion or removal
Solution Approach 1:
The suction lance is segmented into an outer protective tube and an inner hollow profile that houses the float body. This segmentation provides mechanical protection for the float during insertion and removal through narrow openings, as the float remains enclosed within the protective outer tube structure.
Solution Approach 2:
The float body is nested within the protected interior of the hollow profile, which itself is nested within the outer tube. This nested arrangement ensures the float body is shielded from external damage during handling, insertion, and removal operations through narrow container openings.
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
This design ensures the float body can move freely along the axial extent, maintaining the movement space and preventing damage, even when the suction lance is bent or curved, while allowing for precise filling level detection and efficient liquid removal or conveyance.
Implementation Method 1
The float body (22) is arranged to be displaceable or movable at least along a partial area of an axial extension between the suction lance base (49) and the suction lance head (50). The float (22) floats on the liquid medium (13).
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates, among other things, to a suction lance (11) for extracting a liquid medium (13) from a container (12), comprising a suction lance foot (49) for attaching to a bottom (20) of the container and a suction lance head (50) for connection with a metering device (10), wherein a tube body (26) extends axially (48) between the suction lance head and the suction lance foot, in the interior (47) of which a float body (22) and a hollow profile (27) are arranged, wherein the hollow profile (27) is attached to the tube body (26) by means of a linear locking device (42) extending axially.