Magnetic Sensor Sleeve Holder for Powder Metering
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Solution Overview
Problem
Existing monitoring sensors for powder metering face challenges with the interchangeability of sensor sleeves, leading to axial and rotational shifts, damage risks, and increased effort during format changes, affecting measurement quality and reliability.
Innovation Solution
A monitoring sensor design featuring a holding plate and magnetically attractable components that securely fix the sensor sleeve to the base body, preventing shifts and rotations, with an electrically conducting connection for shielding and a tangentially oriented blast nozzle for cleaning, ensuring precise positioning and reduced error.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sensor sleeves are held interchangeably without locking in the sensor base body, then the ease of operation for format changes is improved, but the reliability is worsened due to axial shifting and rotational movement during operation
Solution Approach 1:
The patent replaces mechanical locking systems (screws, clips, or interference fits) with a magnetic field-based holding system. The holding magnet generates a magnetic field that acts on the magnetically attractable material in the sensor sleeve, creating a holding force that prevents axial and rotational movements. This substitution maintains easy interchangeability while ensuring reliable positioning during operation.
2Reliability
If sensor sleeves are attached with O-rings or mechanical locking mechanisms, then the reliability is improved by preventing movement, but the ease of operation is worsened due to damage risks and increased effort during sleeve changes
Solution Approach 1:
The patent eliminates mechanical attachment mechanisms (O-rings, clips, or threaded fasteners) that cause damage and require significant effort for removal and installation. Instead, a magnetic field provides a contactless holding force that can be easily overcome by manual pulling, allowing rapid sleeve changes without damage to the sleeves or base body.
Solution Approach 2:
The patent changes the physical state of the holding force from mechanical contact to magnetic field interaction. The magnetic field strength can be adjusted to provide adequate holding force during operation while allowing easy removal when needed, providing a variable holding characteristic that adapts to different operational requirements.
3Adaptability or versatility
If multiple different sensor sleeves are kept for different powder formats, then the adaptability is improved, but the device complexity is worsened due to the need to manage and store multiple sleeve types
Solution Approach 1:
The patent creates a universal sensor base body with a magnetic holding system that can accommodate multiple different sensor sleeve types for different powder formats. The standardized magnetic interface allows various sleeves to be interchangeably mounted on the same base body, centralizing the electronics and control while only requiring replacement of the format-specific sleeves.
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 solution enhances the interchangeability and reliability of sensor sleeves, reducing measurement errors and operational costs by maintaining precise positioning and shielding against external interference, while facilitating easy format changes and cleaning.
Implementation Method 1
the monitoring sensor includes a holding magnet for pressing the holding plate against the contact surface
Implementation Method 2
The metered amount of powder is channeled through the sensor sleeve and herein subjected to a capacitive mass determination
Data Source
AI summary
A monitoring sensor for metered amounts of powder includes a sensor sleeve to channel the metered amount of powder through it and a sensor base body, in which the sensor sleeve is held interchangeably. A holding plate is attached to the interchangeable sensor sleeve. The sensor base body has a contact surface for the holding plate. The monitoring sensor includes a holding magnet for pressing the holding plate against the contact surface.