Overview
The double-layer desander screen is a critical component in systems requiring efficient removal of sand and grit from liquids. Its two-layer construction—typically combining a coarse outer layer for initial filtration and a finer inner layer for precision—ensures longevity and performance. Commonly used in agriculture, oil extraction, and water management, it minimizes wear on pumps and pipelines by trapping abrasive particles early in the process.
Structure and Working Principle
The screen consists of a robust outer mesh (often stainless steel) and a finer inner layer (polyurethane or woven wire). Liquid flows through the outer layer, which captures larger debris, while the inner layer filters smaller particles. This staged filtration reduces clogging and extends service life. Some models include a vibration mechanism or backflushing ports to automate debris removal. Customizable mesh sizes (e.g., 50–200 microns) allow adaptation to specific particle sizes. The screens are often cylindrical or flat-panel designs, depending on the housing system.
Key Features
Durability is a hallmark of double-layer desander screens, with materials like 316L stainless steel offering corrosion resistance in saline or acidic environments. Polyurethane variants provide flexibility and reduced weight. The dual-layer design also distributes mechanical stress, preventing premature failure. High-flow capacity is achieved through optimized open-area ratios, balancing filtration efficiency with minimal pressure drop. Some screens include anti-blinding coatings to reduce particle adhesion.
Application Areas
In agriculture, these screens protect drip irrigation systems from sand-induced clogging. Oilfield applications include mud filtration during drilling and produced water treatment. Municipal water plants use them in pre-treatment stages to safeguard membranes and ion-exchange resins. Industrial uses extend to mining slurry filtration and food processing, where abrasive particles must be removed without contaminating the product.
Maintenance and Precautions
Regular inspection is essential to detect mesh deformation or clogging. Clean screens using low-pressure water jets or chemical soaks, avoiding abrasive tools that could damage the mesh. Replace screens if tears or significant wear are observed. Avoid exceeding the manufacturer’s rated pressure (commonly 10–150 psi) to prevent blowouts. In freezing conditions, drain systems to avoid ice-related damage.
B2B Procurement Guide
When sourcing, specify the particle size range to determine the appropriate mesh density. For corrosive environments, prioritize screens with higher-grade stainless steel or synthetic materials. Bulk orders (100+ units) often qualify for discounts of 10–20%. Lead times vary from 2–6 weeks for custom sizes. Verify certifications like ISO 9001 or API standards for oilfield applications. Sample testing is recommended to confirm compatibility with your operating conditions.
Related Manufacturers
- 主营：旋流器、冲孔网、聚氨酯、筛网矿山、脱水筛网、锰钢筛网、焊接筛网、棒条筛网、编织筛网、洗沙机、锰钢丝、锰钢编织、方孔棒条筛
- 主营：条缝筛矿筛网厂家、条缝筛
- 主营：不锈钢筛网、金属编织网格网、护坡铅丝石笼网
- 主营：[]
- 主营：不锈钢筛板、弧形筛、不锈钢条缝筛板、聚氨酯筛板、驰张筛、包边筛板、包边不锈钢条缝筛板、包边不锈钢波浪筛板、包边不锈钢冲孔筛板、包边自清洁筛板、包边弹性杆筛板、不锈钢跳汰筛板、不锈钢振动筛、聚氨酯条缝筛板、聚氨酯波浪筛板、聚氨酯挂钩筛板、聚氨酯骨架筛板、包边不挂毛筛板、不锈钢虹孔筛板
- 主营：[]
- 主营：精密激光切割、精密激光打孔、精密激光加工、激光切割加工、精密激光切缝
- 主营：基坑护栏、牛栏网、钢筋网片、石油振动筛网、防护刺绳、升降脚手架、防风抑尘网、挡风抑尘墙、施工电梯门、封闭式围栏、铁皮围挡、彩钢围挡、井口防护门、围挡、爬架网、建筑爬架网、冲孔网、金属冲孔网片、施工工地围挡、市政施工围挡、彩钢板、市政道路围挡、建筑工程施工围挡、护栏网、爬架网片
- 主营：石油振动筛网、石油泥浆振动筛网、钻井液振动筛网、振动筛网、不锈钢网、复合网
- 主营：冲孔网、吹膜机、过滤网、振动筛网、矿筛筛网、震动筛网、冲孔板、消毒框、圆孔板、过滤帽、振动网、庭院栏杆、保护铁网、石油筛布、景观栏杆、道路栅栏、石油用网、实木护栏、石油泥浆、防护网罩、金属板网、草坪护栏、不锈钢网、石油复合网、异形防护罩
- 主营：升降机、护栏网、安全门、泥浆筛网、包边筛网、平铝网、pvc围挡、荷兰网、80目注塑、瓷砖挂板、护栏基坑、花园护栏、人货升降、楼房施工、彩钢围挡、条样品架、风机网罩、厚热镀锌、黑色烤漆、人货施工、草坪护栏、道路护栏、防护栏杆、304不锈钢、装配式pvc
- 主营：工字钢冷弯机、小导管生产线、混凝土输送泵、混凝土湿喷机、注浆泵灌浆机、预制件生产线
- 主营：分离器、泥浆回收、泥浆分离、胜飞石油、泥沙分离设备、泥浆净化装置、泥浆净化回收、泥浆固液分离、泥沙水分离机、泥水分离设备、净化组合装置、打桩专用泥浆
- 主营：除泥器、除泥 器、保护设备、清洗筛网、除泥旋流器筛网、二手石油钻井、石油固控钻井液