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The production scenario is a precision sawing production line of a large-scale furniture manufacturing enterprise, equipped with 4 sets of fully automatic CNC sawing machines (including panel saws and crosscut saws), mainly responsible for precision cutting of solid wood substrates and multi-layer boards.
Product processing requirements: The cutting accuracy of boards is ±0.3mm, with a processing rhythm of 25 pieces per hour (single board size: 1500mm×800mm×25mm).
Production process: Automatic board loading → Sawing machine positioning and clamping → High-speed cutting → Waste sorting → Finished product transfer. During the cutting process, a large amount of floating and suspended wood dust is generated simultaneously above and below the sawing machines, requiring an efficient sawing machine dust collector for precise governance. This case focuses on the application effect of the Chinese-manufactured AJS220 sawing machine dust collector in solving industrial dust problems.
2. Scenario Requirements and Existing Pain Points
2.1 Core Requirements
Dust capture requirement: It is necessary to cover the floating dust above and settled dust below 4 sawing machines simultaneously. The sawing machine dust collector must have sufficient negative pressure suction to prevent dust from spreading to the operating area and surrounding workshops.
Purification accuracy requirement: The particle size of wood dust is mostly 0.3-8μm. The filtering system of the sawing machine dust collector must meet high-precision interception standards to ensure that the emitted air complies with international atmospheric pollutant emission standards.
Continuous operation requirement: The production line adopts a two-shift system (16 working hours per day). The sawing machine dust collector must be suitable for long-term continuous operation with simple maintenance processes that do not affect production.
Linkage control requirement: The sawing machine dust collector can be linked with the sawing machine's start-stop system to realize "sawing machine startup → dust collector synchronous operation" and "sawing machine shutdown → dust collector delayed shutdown after ash cleaning", reducing manual intervention.
2.2 Existing Pain Points (Previous Use of Ordinary Bag Filters)
Incomplete coverage: Traditional dust collectors are only connected to sawing machines through a single pipeline, resulting in a 35% dust capture omission rate above and below the machines. The dust concentration in the operating area seriously exceeds the standard, indicating insufficient all-round capture capacity of conventional sawing machine dust collectors.
Poor filtering effect: The filtering accuracy of ordinary cloth bags is only 8μm, with high penetration rate of fine dust. The purification effect of traditional sawing machine dust collectors fails to meet environmental protection requirements, posing risks of environmental penalties.
Tedious maintenance: Cloth bags are prone to clogging and require shutdown for cleaning every 1.5 hours. The excessive maintenance frequency of traditional sawing machine dust collectors leads to more than 1 hour of daily production line downtime.
Unstable operation: Lack of professional overload protection devices, the traditional sawing machine dust collector shuts down frequently when voltage fluctuates, and has a high failure rate, affecting production continuity.
3.1 Core Equipment Selection
After multiple rounds of comparison and testing, the Chinese-designed and manufactured Jienengrui AJS220 sawing machine dust collector was finally selected as the core equipment for dust control. This sawing machine dust collector is specially designed for industrial sawing dust and is suitable for multi-station centralized dust collection needs. Its specific parameter adaptability is as follows:
Air flow rate: 2000m³/h, total pressure: 3.0kPa, providing strong negative pressure suction to meet the dust capture needs of 4 sawing machines operating simultaneously.
Equipped with 3 PTFE membrane cartridge filters with a filtering accuracy of 0.2μm and a filtering area of 20m². The filtering efficiency of this sawing machine dust collector is far higher than that of traditional equipment, enabling efficient interception of fine wood dust.
Equipped with a full set of Schneider electrical control systems, featuring phase sequence protection, overheating protection, and overload protection functions to ensure stable operation of the sawing machine dust collector in complex power grid environments.
Supports local operation and remote linkage control, perfectly adapting to the automated production rhythm of sawing machines, and significantly improving the operational convenience of the sawing machine dust collector.
3.2 Scheme Design
An integrated dust collection structure of "upper suction + lower absorption" is adopted to give full play to the all-round governance advantages of the sawing machine dust collector:
Upper dust collection: Each sawing machine is equipped with a set of 360° rotatable universal suction arm + large-diameter dust hood, connected to the main suction port of the sawing machine dust collector (suction port diameter: 120mm). It can be flexibly adjusted according to the cutting position to accurately capture the floating dust above.
Lower dust collection: A customized sealed dust collection tooling is installed below the sawing machine. A deflector is arranged inside the tooling to guide dust flow, which is connected to the auxiliary suction port of the sawing machine dust collector (suction port diameter: 160mm) through a pipeline to efficiently collect the settled dust and scattered waste below.
Multi-station adaptation: A single sawing machine dust collector is connected to the dust collection pipelines of 4 sawing machines through a diverter valve, which can independently adjust the suction force of each branch pipeline according to the operating status of the sawing machine, realizing "on-demand dust collection" and avoiding energy waste.
4.1 Equipment Installation and Commissioning
Pipeline layout: Wear-resistant and pressure-resistant PVC dust collection pipelines are adopted. The pipeline route is optimized according to the workshop equipment layout to shorten the pipeline length (the pipeline distance from a single sawing machine to the sawing machine dust collector ≤6m) and reduce air flow resistance.
Sealing treatment: The connection between the dust collection tooling and the sawing machine base, pipeline interfaces, and diverter valve nodes are sealed with high-temperature resistant sealant to fill gaps, ensuring stable negative pressure without leakage during the operation of the sawing machine dust collector.
Linkage setting: The remote control module of the sawing machine dust collector is connected to the PLC control system of the sawing machine to set the linkage logic. At the same time, a centralized control panel is installed in the workshop control room to monitor the operating status of the sawing machine dust collector in real time.
Parameter setting: According to the characteristics of wood dust, the pulse ash cleaning interval of the sawing machine dust collector is set to 8 minutes, and the ash cleaning duration is 3 seconds, which effectively prevents filter clogging and extends the service life of filter elements.
4.2 Operation Optimization
Daily inspection: Before starting work in the morning shift, check the dust accumulation in the dust collection drawer of the sawing machine dust collector to ensure the drawer is closed and sealed. During the middle shift, spot-check the pipeline negative pressure value to ensure stable suction of the sawing machine dust collector.
Maintenance specifications: The dust collection drawer of the sawing machine dust collector adopts a pull-out design with a capacity of 35L. Dust can be dumped without tools and completed before the end of work every day. Conduct a comprehensive inspection of the filter of the sawing machine dust collector every month and replace it if necessary. The replacement process only takes 5 minutes.
Fault handling: Establish an operation account for the sawing machine dust collector, record equipment operation parameters and fault conditions, and assign dedicated maintenance personnel to ensure rapid response and handling of equipment faults.
5.1 Comprehensive Compliance of Dust Removal Efficiency
The dust capture rate of the sawing machine dust collector reaches 99.5%, and the dust concentration in the operating area is reduced from the original 10mg/m³ to 0.2mg/m³, which is much lower than the international industrial hygiene standard limit.
The filtering system of the sawing machine dust collector performs excellently. The dust content in the purified discharged air is ≤0.08mg/m³, with no penetration of fine dust, fully meeting international environmental emission requirements. The enterprise successfully passed the special environmental protection inspection with the support of this Chinese-manufactured equipment.
5.2 Significant Improvement in Operational Stability
The sawing machine dust collector achieves 16 hours of continuous trouble-free operation. The pulse ash cleaning system effectively avoids filter clogging, the equipment maintenance cycle is extended to once a day, the production line downtime is reduced by 90%, and the production efficiency is increased by 30%.
The Schneider electrical protection system of the sawing machine dust collector effectively copes with voltage fluctuations. There is no overload shutdown during operation, and the equipment failure rate is reduced from the original 15% to 0.5%, ensuring safe and reliable operation.
5.3 Remarkable Improvement in Comprehensive Benefits
A single sawing machine dust collector is suitable for 4 sawing machines. Compared with the traditional scheme of configuring one dust collector for one sawing machine, the equipment investment cost is reduced by 60%.
The service life of the filter of the sawing machine dust collector is extended to 8 months. The dust collection drawer is easy to clean, and the equipment maintenance cost is reduced by 50%.
The operating environment has been fundamentally improved, and the health risks of operators have been significantly reduced, improving employee satisfaction. At the same time, the efficient operation of this Chinese-manufactured sawing machine dust collector helps enterprises establish a green and environmentally friendly production image and enhance market competitiveness in the global market.
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