Fur Scraper Rollers With Liquid Spray Nozzles
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Solution Overview
Problem
Existing fur processing apparatuses fail to completely remove fat and flesh residues, leading to spots on the fur due to residual fat penetrating the skin, and often require expensive suction systems or particulate materials that increase complexity and cost, while also risking scraper roller damage.
Innovation Solution
A fur processing apparatus with rotating scraper rollers and spray nozzles that spray a liquid, such as water, onto the rollers before contact with the fur to prevent fat and flesh from sticking, eliminating the need for suction systems and particulate materials, and ensuring effective scraping without manual operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional scraper rollers are used without liquid spray, then the apparatus structure remains simple, but fat and flesh residues stick to the scraper rollers reducing scraping effectiveness
Solution Approach 1:
A liquid spray (water or water-soluble detergent) is introduced as an intermediary substance between the scraper roller and the fat/flesh residues. The liquid penetrates the interface, reduces adhesion, and prevents sticking, thereby maintaining scraping effectiveness without requiring complex suction systems or particulate materials
Solution Approach 2:
The physical-chemical parameters of the scraping interface are changed by applying liquid. The liquid modifies the friction and adhesion characteristics between the scraper roller surface and the residues, enabling easier removal of sticky fat and flesh without increasing mechanical complexity
2Reliability
If suction systems are introduced to remove fat and flesh residues, then scraping effectiveness is improved, but the device complexity and cost increase significantly
Solution Approach 1:
The complex suction system is extracted and replaced by a simple liquid spray system. The essential function of preventing residue accumulation is achieved through the liquid spray alone, eliminating the need for expensive and complex suction equipment with multiple components
Solution Approach 2:
The liquid spray enables the scraper roller to maintain its own effectiveness continuously during operation. The liquid prevents sticking and facilitates automatic removal of residues through centrifugal force, making the system self-maintaining without requiring external suction assistance
3Reliability
If particulate material such as sawdust is applied to facilitate scraping, then fat removal is improved, but the apparatus complexity increases due to conveying and separation means
Solution Approach 1:
The mechanical system involving particulate material conveyance, application, and separation is replaced by a fluid-based liquid spray system. The liquid performs the same function of facilitating fat removal but eliminates the need for complex conveying mechanisms and separation equipment
Solution Approach 2:
A hydraulic system (liquid spray) is used instead of a pneumatic or mechanical particulate handling system. The liquid spray delivers the necessary functional effect through fluid dynamics rather than through solid particulate material, simplifying the overall apparatus
4Reliability
If scraper rollers are stopped and manually cleaned, then residue accumulation is prevented, but productivity is reduced due to downtime
Solution Approach 1:
The liquid spray is applied continuously during the scraping operation, ensuring that the scraper roller surface remains free of sticky residues throughout the entire working cycle. This continuous prevention of accumulation eliminates the need for periodic stopping and manual cleaning, maintaining both performance and productivity
5Reliability
If high pressure is applied to remove sticky fat and flesh, then scraping effectiveness is improved, but the force required increases and may damage the fur
Solution Approach 1:
The liquid spray acts as an intermediary that reduces the direct adhesive force between the scraper roller and the fat/flesh residues. By penetrating the interface and reducing adhesion, the liquid allows effective removal with lower applied pressure, preventing fur damage
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 apparatus achieves higher quality fur by effectively removing fat and flesh residues without suction systems, reducing maintenance costs, and maintaining scraper roller efficiency with a liquid film that prevents sticking and facilitates easier removal of residues.
Implementation Method 1
spray nozzles arranged to spray a liquid, such as water, onto the rollers before contact with the fur to prevent fat and flesh from sticking
Implementation Method 2
a liquid film that prevents sticking and facilitates easier removal of residues
Implementation Method 3
rotating scraper rollers that remove the fat and flesh during contact with the back side of the fur under pressure
Implementation Method 4
it is not thrown off the scraper rollers due to centrifugal forces caused by the rotation of the scraper rollers
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
The invention provides a fur processing apparatus, such as for processing mink fur, with two scraper units each with a plurality of rotating scraper rollers arranged to remove fat and flesh of a leather side of a fur when placed on a mandrel which is then projected forward in its length direction. Sprays of liquid are provided to remove fat and flesh off the fur in the absence of any particulate material such as particles of sawdust.