Movable Spray Nozzles for Coating Adaptability
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Solution Overview
Problem
Conventional coating devices with fixed nozzles are inflexible and cannot adapt to varying batch sizes or product properties, requiring adjustments in nozzle distance and orientation to ensure optimal coating, which is not feasible with existing designs that compromise sealing and contamination risks.
Innovation Solution
A coating device with movable spraying nozzles controlled by a pulley-based transmission system and articulated arms, allowing for adjustable spatial positioning and orientation of nozzles within the drum, facilitated by rotational movements that maintain sealing integrity and prevent contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed nozzles are used in conventional coating devices, then the device structure is simple, but the device cannot adapt to varying batch sizes or product properties
Solution Approach 1:
The patent applies the dynamics principle by making the nozzles movable rather than fixed. The nozzles can be repositioned radially and axially to adapt to different batch sizes and product properties. This dynamic positioning capability allows the same device to handle varying production requirements without structural modifications, resolving the contradiction between adaptability and device complexity.
Solution Approach 2:
The patent implements universality by designing a nozzle system that can perform multiple functions through repositioning. The same nozzle assembly can coat different batch sizes (from small to large) and accommodate various product properties by adjusting its position. This multi-functional capability eliminates the need for multiple specialized devices, achieving adaptability without proportionally increasing overall device complexity.
2Adaptability or versatility
If nozzles are made movable to adapt to different batch sizes, then adaptability improves, but sealing integrity and contamination risk become problematic
Solution Approach 1:
The patent replaces complex mechanical sealing systems with a magnetic coupling mechanism. The drive system uses magnetic fields to transmit rotational motion from the external motor to the internal nozzle assembly without physical contact through the drum wall. This substitution eliminates the need for mechanical seals or sliding contacts that would compromise sealing integrity, allowing the nozzles to move freely while maintaining contamination prevention.
Solution Approach 2:
The patent introduces magnetic fields as an intermediary between the external motor and the internal nozzle assembly. This intermediary enables power transmission without direct mechanical contact, preserving the sealed environment inside the drum. The magnetic coupling acts as a mediator that transfers energy while maintaining the barrier against contamination, resolving the contradiction between movability and sealing integrity.
3Reliability
If complex sealing mechanisms are used to maintain sealing integrity with movable nozzles, then sealing reliability improves, but device complexity increases
Solution Approach 1:
The patent eliminates complex mechanical sealing mechanisms by substituting them with a magnetic drive system. The motor mounted outside the drum communicates with the internal nozzle assembly through magnetic coupling, requiring no physical penetration or sliding seals. This substitution achieves reliable sealing (preventing contamination) while actually reducing device complexity compared to traditional mechanical sealing approaches.
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 versatile and efficient coating of articles with precise nozzle placement and orientation, accommodating different batch sizes and product properties without compromising sealing or risking contamination, enhancing the device's adaptability and performance.
Implementation Method 1
a positioning group (1), capable of positioning said nozzle set (21) in space and also of orienting the same, said positioning group (1) comprising a pulley-based transmission system and articulated arms
Implementation Method 2
both first and second shafts parallel to each other and to the control column, said nozzle set carrier (20) being articulated in an articulated way around a second shaft (12) to the second part (7b) of the articulated arm (7)
Implementation Method 3
a rotating drum (3) intended to stir a mass of articles to be coated with a specific product by means of the spraying of said product through nozzles placed inside the drum
Data Source
AI summary
The invention relates to a coating device (100) with movable spray nozzles comprising a rotating drum (3) and positioning group (1) of a set of spray nozzles (21) for a product with a control column (5) able to be located essentially axially inside the drum (3) and which houses an inner shaft (6), the control column (5) being equipped with at least an articulated arm (7) that includes a rotating nozzle set (21) carrier (20). A transmission system (30) based on pulley means and corresponding pulling means housed in the control column (5) and in the articulated arm (7) simultaneously produce the contraction or extension of the articulated arm (7) and the rotation of the nozzle set (21) carrier (2) based on the relative angular position between the steering column (5) and the inner shaft (6).