Gradient Nozzle Arrangement for Wide Sheet Strip Descaling
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Solution Overview
Problem
Existing high-pressure water jet sand-blasting descaling technology is limited to cleaning plain carbon steel sheet strips with widths less than or equal to 800 mm and low surface quality requirements, while wider and thicker sheet strips with higher technical added value often use polluting methods like chemical, mechanical, and shot-blasting, which are harmful to humans and the environment.
Innovation Solution
A high-pressure water jet sheet strip sand-blasting descaling cleaning device and system that includes a cleaning box, washing box, and descaling nozzles arranged in a gradient along the conveying direction to ensure even coverage and prevent surface scratches, combined with a conveying system that uses clamping mechanisms and horizontal rollers to stabilize the sheet strip during cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high-pressure water jet sand-blasting descaling technology is used, then surface quality and production efficiency are improved, but the technology is limited to narrow sheet strips with width less than or equal to 800 mm
Solution Approach 1:
The cleaning device is divided into multiple independent cleaning units, each equipped with adjustable nozzles that can be positioned independently. This segmentation allows the system to handle sheet strips of various widths by activating only the necessary cleaning units, thereby resolving the limitation to narrow sheet strips while maintaining high surface quality
Solution Approach 2:
The cleaning device incorporates adjustable and movable components, including adjustable nozzle positions and movable cleaning units that can be configured according to the sheet strip width. This dynamic adaptability enables the same device to effectively clean both narrow and wide sheet strips, expanding the applicable width range while preserving cleaning precision
2Productivity
If uncoiling/coiling continuous-type conveying is used with metal plate support, then thin-sheet and narrow-sheet strips can be cleaned, but medium-thick and wide sheet strips experience unstable conveying, surface scratches, and uneven surface quality
Solution Approach 1:
The invention replaces the traditional metal plate support system with a high-pressure water jet sand-blasting system that uses fluid dynamics instead of mechanical contact. This substitution eliminates surface scratches caused by metal plate contact while maintaining continuous cleaning capability, and the adjustable nozzle positioning ensures uniform surface quality across wide and thick sheet strips
Solution Approach 2:
The cleaning system incorporates adjustable parameters including nozzle distance, nozzle angle, and water pressure that can be optimized based on sheet strip thickness and width. This parameter adjustability allows the system to maintain stable conveying and uniform surface quality for medium-thick and wide sheet strips while preserving continuous cleaning productivity
3Manufacturing precision
If descaling nozzles spray perpendicular to conveying direction, then cleaning effect is achieved, but sheet strip deviates from original conveying direction causing instability
Solution Approach 1:
The cleaning device employs asymmetric nozzle arrangements where nozzles are positioned at specific angles relative to the conveying direction rather than perfectly perpendicular. This asymmetric configuration creates a balanced force distribution that achieves effective descaling while minimizing deviation from the conveying direction, thereby maintaining conveying stability
Solution Approach 2:
The system uses counterbalancing nozzle arrangements where nozzles are positioned on both sides of the sheet strip at symmetric angles. The forces generated by these nozzles counterbalance each other, preventing lateral deviation while maintaining effective perpendicular cleaning action, thus resolving the contradiction between cleaning effectiveness and conveying stability
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 solution enables stable and efficient cleaning of wide and thick sheet strips with high surface quality requirements, reducing environmental pollution and operating costs while improving production efficiency and surface quality.
Implementation Method 1
high-pressure water jet sand-blasting descaling technology
Implementation Method 2
high-pressure water jet sand-blasting descaling technology
Data Source
AI summary
A high-pressure water jet sheet strip sand-blasting descaling cleaning device, a cleaning line and a system are disclosed. The cleaning device includes a cleaning box (7), a washing box (18) and descaling nozzles (6), the descaling nozzles (6) face to the same width direction of a sheet strip (5) and are arranged in a gradient along a conveying direction of the cleaning box (7) to jet covering the sheet strip (5). The system includes the cleaning device, an abrasive collecting box, a high-pressure water supply system, an abrasive supply-recovery-separation system and a sewage recycling treatment system. The nozzles are slantwise arranged in a gradient along the conveying direction, and the neighboring nozzles do not interfere with each other, and are used for cleaning successively, so that a cleaning process is stable and controllable. A high-pressure water jet sand-blasting cleaning technology is combined with a sheet strip conveying system, different specifications of sheet strips can be continuously and stably conveyed while surfaces thereof are cleaned by using the high-pressure water jet sand-blasting acid-free cleaning technology.