Inter-Impinging Rotary Screen Cleaning for Sticky Material Buildup
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Solution Overview
Problem
Existing screening technologies face issues with wet and sticky materials adhering to screens, causing a 'disc brake effect' that leads to increased equipment load, motor overload, and inefficient cleaning, with traditional solutions failing to effectively address these problems.
Innovation Solution
A staggered and inter-impinging self-cleaning screening device with rotating shafts and cleaning teeth sets, combined with a pulse warning automatic cleaning mechanism, uses high-pressure gas/liquid to clean adhering materials and monitors load in real-time to prevent motor overload, while the movement generating mechanism ensures efficient material flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If toothed scrapers are arranged below each screen shaft to scrape off adhesive materials, then the screen surface can be cleaned, but the scraped materials accumulate within the angle range formed by the shaft, screen, and scraper, leading to increased friction force and disc brake effect
Solution Approach 1:
The invention extracts the cleaning function from the traditional toothed scraper configuration and relocates it to a centralized cleaning mechanism positioned at the lower end of the screen shaft, where materials naturally accumulate. This allows for more effective removal of adhered materials without creating accumulation zones.
Solution Approach 2:
The cleaning mechanism is designed to proactively remove adhesive materials before they can accumulate to problematic thicknesses. The cleaning elements are positioned to continuously scrape and remove materials as they adhere to the screen surface, preventing the disc brake effect from developing.
2Productivity
If conventional cross screening equipment is used with multiple shafts and screens, then material screening can be performed, but wet and sticky materials adhere to the screens causing motor overload and equipment stoppage
Solution Approach 1:
The screening equipment incorporates self-cleaning mechanisms that automatically remove adhesive materials during operation. The cleaning elements are integrated into the screen shaft assembly, allowing the system to maintain itself without external intervention, thus preventing motor overload and ensuring continuous operation.
Solution Approach 2:
The invention utilizes high-pressure gas or liquid spray systems to clean the screen surfaces. The spray nozzles are positioned to direct high-pressure streams at the screen surfaces, effectively removing adhered materials without mechanical contact, thus maintaining screening capacity while preventing overload.
3Reliability
If motor power is increased to prevent stoppage due to overload, then continuous operation can be maintained, but electric power is wasted
Solution Approach 1:
The self-cleaning mechanisms reduce the load on the motor by automatically removing adhesive materials that would otherwise cause increased friction and power consumption. This allows the system to operate with appropriately sized motors without requiring excessive power reserves.
Solution Approach 2:
The invention incorporates sensors and control systems that monitor the operating conditions of the screening equipment. When adhesive buildup is detected, the cleaning mechanisms are activated to remove the buildup, preventing motor overload and optimizing power consumption based on actual operating needs rather than using oversized motors continuously.
4Reliability
If manual cleaning of adhesive materials is performed regularly, then the screen surface can be maintained, but the working environment deteriorates and manual labor intensity increases
Solution Approach 1:
The equipment incorporates automatic cleaning mechanisms that eliminate the need for manual cleaning operations. The self-cleaning systems continuously maintain the screen surfaces, improving the working environment and eliminating manual labor requirements while ensuring reliable screen surface condition.
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 device effectively prevents the 'disc brake effect' by self-cleaning during operation, reduces power consumption, and minimizes manual intervention, enhancing screening efficiency and reliability.
Implementation Method 1
a spray hole is provided in the rotating shaft close to both sides of the self-cleaning screen device, so that the spray hole sprays liquid or gas to the screen surface
Implementation Method 2
the spray hole sprays liquid or gas to the screen surface, thereby cleaning the screen surface
Data Source
AI summary
The present invention discloses a staggered and inter-impinging self-cleaning screening device, comprising a plurality of staggered and inter-impinging rotating screening mechanisms arranged in a tilted downward conveying direction, movement generating mechanisms, and pulse warning automatic cleaning mechanisms; the staggered and inter-impinging rotating screening mechanisms are adjacently arranged or arranged every other shaft; the self-cleaning screen devices are equidistantly coupled and installed on the outer surface of the rotating shaft; the rotating shaft is constructed into a hollow structure, and provided with spray-holes; the self-cleaning screen devices of the rotating shaft are equidistantly staggered with each other in the coaxial direction; the pulse warning automatic cleaning mechanism comprises an overload detector, and a controller; the overload detector is installed at one end of the rotating shaft; the movement generating mechanism includes planar cams installed at both ends of the rotating shaft assembly.