Overview
The screw feeder scale is an integrated system combining a screw conveyor with a load cell-based weighing mechanism. It is engineered for industries requiring precise control over material flow rates, such as food production (flour, sugar), pharmaceuticals (powdered ingredients), and cement manufacturing (raw meal). Unlike standalone conveyors, it measures material weight in real time, enabling automatic adjustments to maintain consistent feed rates. Modern versions often include PLC interfaces for integration with plant control systems.
Structure and Working Principle
A typical unit consists of a hopper, helical screw, drive motor, load cells, and control cabinet. Material from the hopper is pushed by the rotating screw through a sealed trough, while the entire assembly is suspended on load cells that measure weight continuously. The system calculates mass flow by correlating screw speed (RPM) with weight data. Advanced models use loss-in-weight principles, where the hopper's decreasing weight is tracked for ultra-precise batch dosing. Key components like the screw shaft are often hardened to resist abrasion from abrasive materials.
Key Features
High accuracy (±0.5% for premium models) makes screw feeder scales ideal for formulations where ingredient proportions are critical. Their enclosed design minimizes dust emissions, complying with ATEX standards in explosive atmospheres. Variable pitch screws allow customized flow profiles, while modular designs simplify cleaning for food-grade applications. Some units feature self-diagnostic systems to alert operators to issues like screw jams or calibration drift.
Application Areas
In food processing, these scales handle hygroscopic materials like starch without clogging. Chemical plants use them for feeding catalysts or additives where exact stoichiometry is vital. Construction material producers rely on screw feeders for blending raw minerals in cement kilns. They are also deployed in recycling facilities to meter plastic pellets or rubber crumbs with ±1% consistency.
Maintenance and Precautions
Monthly calibration with test weights is recommended, especially after initial installation or mechanical adjustments. Inspect screw flights for wear every 3–6 months in abrasive applications. Avoid moisture ingress to load cells, which can cause drift. For sticky materials, install vibrators or air blasters to prevent buildup. Always power off the unit before manual cleaning to prevent accidental startup.
B2B Procurement Guide
Specify required capacity (kg/h), material characteristics (bulk density, abrasiveness), and accuracy class. Food/pharma buyers should request 316L stainless steel construction and EHEDG certification. Compare quoting models with/without automation interfaces (e.g., Profibus). Lead times for custom configurations are typically 8–12 weeks. Consider total cost of ownership—cheaper carbon steel units may incur higher maintenance costs with corrosive materials.
Related Manufacturers
- 主营：[]
- 主营：煤场皮带秤、皮带秤、螺旋秤、失重秤、转子秤、电子皮带秤、ICS皮带秤、配料秤、调速皮带秤、计量秤、粉料失重秤、失重秤喂料机、粉煤灰转子秤、颗粒皮带秤、粉料螺旋秤、螺旋称重给料、螺旋铰刀秤、螺旋计量给料机、密封皮带秤、配料计量秤、定量给料机、粉料定量给料机
- 主营：螺旋秤、皮带称重给料机、仓式失重称设备
- 主营：皮带秤、电子皮带秤、皮带计量秤、输送机计量秤、高精度皮带秤、阵列式皮带秤、高精度电子皮带秤、皮带秤厂家、计量皮带秤、输送带计量秤、洗煤厂皮带秤、输煤皮带秤、煤炭皮带秤、防爆皮带秤、矿用皮带秤、井下电子皮带秤、矿用防爆皮带秤、矿用电子皮带秤、港口皮带秤、煤矿皮带秤、高精度螺旋秤、螺旋秤、ics皮带称、皮带自动采样机、皮带采样机
- 主营：皮带秤、螺旋秤、电子皮带秤、转子秤、失重秤喂料机、调速皮带秤、粉煤灰转子秤、料斗秤、链板秤、配料皮带秤、失重秤、单管螺旋秤、配料秤、料仓秤、ics电子皮带秤、皮带计量秤、输送带计量秤、托辊皮带秤、固体流量计、冲板流量计
- 主营：吸料机、喂料机、给料机、失重秤、配料机、配料系统、自动化配料、螺杆计量秤、螺旋输送机、送料机、集中供料、定量喂料、喂料系统、改性塑料、气力输送、计量喂料、精准计量、无尘投料、活化料斗、陶瓷釉料、电磁振动、计量混合、粉体吨包、自动加料系统、计量喷射系统
- 主营：除铁器、除铁机、磁力架、自动配料系统、平板磁选机、磁性过滤器、链板输送机、自动除铁器
- 主营：称重给料机、定量给料机、称重给煤机、电子皮带秤、高精度皮带秤、螺旋秤、失重秤、皮带采样机、液压纠偏、断带抓捕器
- 主营：提升机、上料机、输送机、螺旋输送机、除尘布袋、刮板输送机、斗式提升机、布袋除尘器、二手水泥罐、插板阀、卸料器、除尘骨架、链式输送机
- 主营：真空脱泡搅拌机、搅拌脱泡机、行星搅拌脱泡机、全自动配料机、脱泡搅拌机、真空均质机、行星真空搅拌机、均质机厂家、真空脱泡机、自转公转搅拌机、银浆搅拌机厂家、混合消泡机、匀浆机厂家、公转自转脱泡机、真空脱泡离心机、行星重力搅拌机、真空脱泡搅拌机厂家、真空搅拌脱泡机、真空脱泡机厂家、行星式搅拌脱泡机、公自转搅拌机、脱泡搅拌设备、离心搅拌脱泡机、搅拌真空脱泡机、真空高压均质机、真空不锈钢乳化机
- 主营：定量给料机、磁选机、金属探测仪、皮带秤、螺旋计量秤、微粉秤、转子计量秤、链板秤、转子秤、链板计量秤、螺旋秤、除铁器、强磁磁选设备、搅拌机、金属探测器、尾矿打捞机、管链输送机、刮板输送机、化浆机、金属分离器、全自动金属分离器、双轴搅拌机、工业搅拌机、泥浆搅拌机、双轴加湿搅拌机
- 主营：布袋除尘器、斗式提升机、粉尘加湿机、螺旋输送机、无轴螺旋输送机、管式螺旋输送机、称重螺旋输送机、刮板输送机、星型卸料器、通风蝶阀、插板阀、棒条阀、除尘布袋、除尘骨架、三通分料阀、叶轮给料机、波纹管补偿器、不锈钢星型卸料器、旋风除尘器、脉冲布袋除尘器
- 主营：喂料机、给煤机、包装机、皮带秤、失重秤、计量秤、配料秤、电子包装秤、螺旋计量称、电子减量秤、定量包装秤、称重包装秤、除铁器、电子皮带、除铁设备、粉体给料机、称重给料机、旋转卸料阀、定量给料机、自动除铁机、微量给料机、叶轮给料机、煤仓输送设备、自动计量设备、密封输送设备
- 主营：电子皮带秤、螺旋计量秤、皮带配料秤、螺旋定量给料机、皮带定量给料机、自动定量包装机、皮带输送机
- 主营：流量秤、配料螺旋称、定量给料机、多功能输送机
- 主营：标准测力仪、称重传感器、测力传感器、化肥计量包装秤、引伸计标定仪、同轴度测试仪、位移速度检定仪、扭矩扳手检定仪、悬臂梁称重传感器、轮辐式称重传感器、柱式称重传感器、压力传感器、扭矩传感器、称重显示控制仪表、拉压双向测力传感器、S型称重传感器、定制传感器
- 主营：催化燃烧设备、刮板输送机、斗式提升机、螺旋输送机、布袋除尘器、滤筒除尘器、旋风除尘器、仓顶除尘器、星型卸料器、粉尘加湿机、卸灰阀、空气输送斜槽、电捕焦油器、气旋混动喷淋塔、皮带输送机、活性炭吸附箱、油烟净化器、料仓、打散机、补偿器、湿电除尘器、RTO沸石转轮、蝶阀、插板阀、烟气挡板门
- 主营：生石灰消化器、斗式提升机、星型卸料器、称重螺旋、螺旋输送机、称重配料系统、电子皮带秤、水冷螺旋、烟道挡板门、定量给料机、刮板输送机、干灰散装机、三通阀、锅炉布袋除尘器、关风机、板链斗提机、斜槽输送机、链式输送机、通风蝶阀
- 主营：定量给料机、冲板固体流量计、固体流量计、皮带秤、螺旋秤、转子秤、配料秤、双冲力计量秤、料斗秤重、电子皮带秤、计量失重秤、配料皮带秤、ICS电子皮带秤、链板秤、单管螺旋秤、双管螺旋秤、粉煤灰转子秤、粉料螺旋秤、颗粒皮带秤、给料秤、皮带称重给料机、转子称重给料机
- 主营：机械设备、仪器设备、五金工具、工业品、无线呼叫器、防爆配电箱、静音新风机、防火防爆柜、pp酸碱柜、人行通道闸机、毒麻储存柜、商用洗碗机、燃气热水器、绿翡翠手镯、台球桌、磁力搅拌器、空气能热水器、全自动封边机、消毒柜、工业用吸尘器、商用烘鞋机、立式电热燃气炸炉、超声波洗碗机、超声波清洗机