Cover Hood for Load Cell Housings

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Solution Overview

Problem

The arrangement of closely adjacent load cell housings in multi-lane weighing systems complicates cleaning, as small gaps between them are difficult to clean, necessitating system shutdowns to maintain high product throughput and cleanliness, especially in pharmaceutical and food production.

Innovation Solution

A cover hood that jointly covers at least two load cell housings, securing the narrow intermediate space against dirt and contamination, with passage openings for load introduction bolts and using labyrinth rings for sealing and fastening, allowing for easy installation without disrupting the load cells' position or calibration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If load cell housings are arranged closely adjacent to achieve higher product throughput, then installation space is reduced and productivity increases, but cleaning becomes difficult due to small gaps between housings

Engineering Contradiction:
Improveproduct throughputVSAvoidcleaning accessibility
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The patent combines multiple load cell housings under a single common cover hood, merging the protective function across adjacent housings. This allows the intermediate spaces between housings to be sealed and protected as a unified structure, making cleaning feasible through the load introduction bolts while maintaining compact arrangement for high throughput

Inventive Principle:
Principle #5Merging (Combining)

2Area of stationary object

If load cell housings are arranged closely adjacent to reduce installation space, then space utilization improves, but thorough cleaning requires housing removal which shuts down the system

Engineering Contradiction:
Improveinstallation spaceVSAvoidsystem shutdown time
Core Design Contradiction:
Area of stationary objectVSLoss of time

Solution Approach 1:

The common cover hood acts as an intermediary protective structure that enables cleaning operations through the load introduction bolts without requiring housing removal. This mediator structure maintains the compact installation arrangement while preventing contamination in intermediate spaces, allowing cleaning to proceed during normal operation without system shutdown

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If individual load cell housings are cleaned separately, then thorough cleaning is possible, but the weighing system must be shut down temporarily

Engineering Contradiction:
Improvecleaning thoroughnessVSAvoidproduct throughput
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

The common cover hood provides universal protection and cleaning access for multiple load cell housings through a unified structure. The load introduction bolts serve dual functions: as load transmission elements and as cleaning access points, enabling thorough cleaning of intermediate spaces while maintaining continuous operation and high product throughput

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP3301414B1Cover hood
Publication Date: 2020.03.18 WIPOTEC GMBH
  • EP3301414B1 patent drawingFigure 1
  • EP3301414B1 patent drawingFigure 2a~2b

AI summary

Cover for covering several load cell housings together, wherein a load introduction bolt protrudes from each load cell housing through a housing opening, and wherein a separate through-hole is provided in an upper part of the cover for each load introduction bolt, and wherein the cover can be connected to the individual load cell housings.