Milking Line Cleaning Layout to Preserve Vacuum Stability

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Solution Overview

Problem

Existing milking devices face issues with vacuum loss during the transition from milking to cleaning, requiring manual positioning of milking cups and inefficient cleaning processes.

Innovation Solution

A milking device with integrated valve units that control fluid flow to reduce vacuum loss and enhance cleaning efficiency by allowing fluid circulation without passing through milking cups, using a first valve unit to interrupt the flow path to the milk lock and a second valve unit for controlled fluid circulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If fluid is supplied through milking cups during cleaning, then cleaning is performed, but vacuum is lost in the milking unit

Engineering Contradiction:
Improvecleaning capabilityVSAvoidvacuum maintenance
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The invention divides the cleaning fluid path into separate channels (first cleaning line and second cleaning line) that bypass the milking cups. The first cleaning line cleans the milk collection piece while the second cleaning line cleans the milking line, allowing cleaning without disrupting the vacuum in the milking cups.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention introduces intermediate cleaning lines that act as mediators between the fluid source and the components to be cleaned. These cleaning lines provide an alternative pathway for cleaning fluid that does not involve the milking cups, thus preserving the vacuum while enabling thorough cleaning of all components.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of manufacture

If manual positioning of milking cups is required, then cleaning can be performed, but operator effort increases

Engineering Contradiction:
Improvecleaning processVSAvoidoperator effort
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The invention enables the cleaning system to service itself automatically. The valve-controlled cleaning lines can be activated without manual intervention to position or handle the milking cups. The system performs self-cleaning of the milk collection piece and self-cleaning of the milking line through automated fluid circulation.

Inventive Principle:
Principle #25Self-service

3Manufacturing precision

If cleaning fluid flows through milking cups, then cups are cleaned, but cleaning time increases

Engineering Contradiction:
Improvecleaning thoroughnessVSAvoidcleaning duration
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The invention maintains continuous cleaning action by using valve control to direct cleaning fluid through different paths sequentially. The first valve controls cleaning of the milk collection piece while the second valve controls cleaning of the milking line, allowing continuous cleaning of multiple components without interruption or repositioning.

Inventive Principle:
Principle #20Continuity of useful action

4Manufacturing precision

If more cleaning fluid is used, then cleaning effectiveness improves, but fluid consumption increases

Engineering Contradiction:
Improvecleaning qualityVSAvoidfluid consumption
Core Design Contradiction:
Manufacturing precisionVSLoss of substance

Solution Approach 1:

The invention segments the cleaning fluid consumption into two separate controlled streams. The first cleaning line delivers fluid to clean the milk collection piece, and the second cleaning line delivers fluid to clean the milking line. This segmentation allows precise control of fluid distribution to each component, avoiding wasteful overuse while ensuring thorough cleaning of both elements.

Inventive Principle:
Principle #1Segmentation

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

Reduces vacuum loss and cleaning time, minimizes fluid consumption, and simplifies the cleaning process by eliminating the need for manual cup positioning, while ensuring thorough cleaning of milking equipment components.

Implementation Method 1

a first valve unit (13), which, viewed in the direction of milk flow, is located in the milk line (7) upstream of the milk lock (6)

Methodology Applied
Scientific EffectVacuum: Vacuum

Implementation Method 2

Fluid supplied by the fluid source is introduced into the milking line via the flushing line (11)

Methodology Applied
Scientific EffectFluid flow:

Implementation Method 3

a second valve unit (14), which is connected to the milk line (7) and the secondary line (12)

Methodology Applied
Scientific EffectFluid circulation:

Data Source

PatentEP4456716B1Milking device with a cleaning unit
Publication Date: 2025.11.12 GEA FARM TECHNOLOGIES GMBH
  • EP4456716B1 patent drawingFigure 1
  • EP4456716B1 patent drawingFigure 2~3
  • EP4456716B1 patent drawingFigure 4~5

AI summary

The invention relates to the cleaning of a milking device, said milking device comprising milking equipment (1), a milk receiver (6) and a milk tank (8), wherein a milking line (5) connects an outlet of the milk collection piece (4) to an inlet of the milk receiver (6), and the milk receiver (6) can be connected to the milk tank (8) via a milk line (7), as well as comprising a cleaning unit, in turn comprising a fluid source (10), a rinsing line (11) that can be fluidically connected to the fluid source (10) and the milking line (5), and an auxiliary line (12) that can be fluidically connected to the milking line (5) and the milk line (7). The cleaning unit also has a first valve unit (13) which is arranged in the milking line (5) upstream of the milk receiver (6) in the milk flow direction, a second valve unit (14) connected to the milk line (7) and the auxiliary line (12), and a control unit that is connected to the first and the second valve unit (13, 14) via signals.