Rotary Leather Spray Booth with Arcuate Suction
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Solution Overview
Problem
Existing rotary spray booths in the tanning industry face challenges such as inefficient airflow, uncontrolled rebounds of spraying material, and complex designs that require significant factory space, leading to environmental pollution and operational inefficiencies.
Innovation Solution
The rotary booth features suction means distributed according to an arcuate configuration that coincides with the spatial distribution of the spraying means, optimizing airflow and reducing material rebounds, while maintaining a compact design that minimizes factory space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If traditional rotary spray booths are used, then leather spraying treatment can be performed, but the booth requires significant factory space and has complex design
Solution Approach 1:
The booth is divided into separate functional modules: a rotary carousel unit for holding multiple leathers, a stationary spray gun assembly, and an airflow control system. This segmentation allows each component to be optimized independently and reduces the overall space requirement compared to traditional monolithic designs.
Solution Approach 2:
The invention transitions from a linear conveyor-based system to a rotary carousel-based system, utilizing rotational movement in a vertical plane. This dimensional change allows multiple leathers to be treated simultaneously in a compact footprint, reducing the horizontal factory space required.
2Productivity
If traditional airflow systems are used in rotary booths, then fume extraction can be performed, but airflow efficiency is insufficient and material rebounds occur
Solution Approach 1:
The airflow system is designed with localized extraction points positioned at specific locations around the rotary carousel where fume accumulation occurs. This local quality approach ensures targeted airflow control at critical zones, improving extraction efficiency and preventing material rebound without requiring a complete overhaul of the entire booth's airflow system.
Solution Approach 2:
The system incorporates airflow sensors and adjustment mechanisms that respond to detected fume concentrations and spray material distribution patterns. This feedback loop allows real-time optimization of airflow rates and directions, maintaining efficient fume extraction while preventing material rebound under varying operating conditions.
3Object-generated harmful factors
If distributed suction means are added to optimize airflow, then material rebound is reduced, but device complexity increases
Solution Approach 1:
The suction means are integrated into the existing rotary carousel structure, with extraction ports incorporated into the carousel arms or central hub. This merging of functions allows airflow control to be achieved without adding separate, complex external suction systems, reducing overall device complexity while maintaining effective material rebound control.
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 enhances airflow efficiency, reduces material waste and rebounds, and simplifies maintenance, resulting in higher-quality leather finishes and reduced environmental impact without increasing the booth's overall dimensions.
Implementation Method 1
suction means distributed according to an arcuate configuration that coincides with the spatial distribution of the spraying means, optimizing airflow
Implementation Method 2
spraying means having the function of depositing in nebulized form on the leather at least one fluid painting mixture
Data Source
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AI summary
A rotary booth (1; 50) for treating leathers by spraying comprising a load-bearing structure (2) having a loading area (3) in which a leather (P) to be subjected to a spraying treatment is conducted inside the load-bearing structure (2), and a discharge area (4) in which the leather (P) just treated is conducted outside the load-bearing structure (2), a conveyor belt (5; 54) mainly housed in the load-bearing structure (2) and adapted to advance along a linear direction (W) the leather (P) received on an upper surface (5a) of the conveyor belt (5; 54), a rotating unit (6) coupled inside the load¬ bearing structure (2) and provided with spraying means (7; 56) adapted to deposit in spray form on the leather (P), advancing along the linear direction (W) on the conveyor belt (5; 54), at least one painting mixture while the spraying means (7; 56) follow a closed annular trajectory (T) under the rotation of the rotating unit (7; 56), so that the spraying means (7; 56) take a working condition along two primary circumferential arcs (8, 9) belonging to the closed annular trajectory (T) and defined directly above the conveyor belt (5; 54), and a resting condition along two secondary circumference arcs (10, 11), connecting the primary circumference arcs (8, 9) and belonging to the closed annular trajectory (T), defined externally and laterally to the conveyor belt (5; 54), a collection plane (12; 61), arranged below the spraying means (7; 56) inside the load-bearing structure (2), provided with an upper face (12c) adapted to receive by falling the particulate (L) of the painting mixture and suction means (13; 62) operatively connected to the load-bearing structure (2) and adapted to capture by means of an airflow the fumes (Q) produced by the spraying treatment inside the load-bearing structure (2). In particular, the suction means (12; 61) suck at the spraying zone, in the lower part of the load-bearing structure (2) cooperating directly with the primary circumferential arcs (8, 9) belonging to the closed annular trajectory (T) and along which the spraying means (7; 56) take the working condition, dispensing the painting mixture on the leather (P) advancing on the conveyor belt (5; 54).