Mechanical Coarse Bar Screen
Overview
Mechanical coarse bar screens are first-line defense systems in liquid-solids separation processes. They consist of inclined parallel bars spaced to capture large floating or suspended matter while allowing liquid to pass through. Unlike manual screens, these units incorporate motorized rakes that continuously clean the bar surface, depositing debris into a collection hopper. Modern designs integrate with SCADA systems for real-time monitoring of jams or overloads. They are fundamental in municipal wastewater treatment, food processing plants, and power generation facilities where uninterrupted flow and equipment protection are critical.
Structure and Working Principle
The core components include the screen frame (fixed or adjustable angle), rake teeth assembly, drive motor, and control panel. Hydraulic or electric motors power a continuous loop chain that moves rake teeth upward along the bars, scraping trapped solids to a discharge conveyor. Bar spacing determines screening efficiency – typical configurations range from 10mm for fine protection to 50mm for high-flow stormwater applications. Advanced models feature self-cleaning mechanisms like spray bars or brush systems to prevent material buildup between cleanings.
Key Features
Durability is ensured through hardened stainless-steel rake teeth and abrasion-resistant guide rails. Many units offer variable speed drives to adapt to fluctuating flow conditions, reducing energy consumption during low-load periods. Weatherproof enclosures and submersible designs are available for outdoor or underground installations. Some manufacturers incorporate object detection sensors to automatically reverse the rake during jams, minimizing downtime and maintenance interventions.
Application Areas
Primary installations include headworks at wastewater treatment plants, where they prevent damage to influent pumps and grit removal systems. Industrial applications span pulp/paper mills, breweries, and petrochemical plants handling process water with fibrous or bulky contaminants. In flood control scenarios, heavy-duty versions with wider spacing (up to 100mm) are deployed at stormwater pump stations to prevent log or vegetation blockages during peak flow events.
Maintenance and Precautions
Monthly inspections should verify chain tension, sprocket alignment, and wear on rake teeth. Lubrication schedules vary by model but typically require greasing every 400-500 operating hours. Operators must monitor for unusual vibrations or noise indicating misalignment or foreign object damage. Emergency stop functions should be tested quarterly. In freezing climates, heating elements or insulated covers may be necessary to prevent ice accumulation on moving parts.
B2B Procurement Guide
Specify channel width (standard range: 0.5-3m), design velocity (0.3-1.0 m/s), and required clearance height for rake discharge. Request material certificates for stainless steel components, especially when handling corrosive or saline wastewater. Compare warranty terms (typically 1-2 years for mechanical parts) and availability of local service support. For large projects, ask about modular designs that allow future expansion without full system replacement. Lead times generally range 8-12 weeks for custom configurations.
Related Manufacturers
- 主营：脱水机、机械格栅、加药搅拌桶、回转式粗格栅、浓缩叠螺机、不锈钢格栅、不锈钢加药、处理活性生物、六角蜂窝填料、一体化叠螺机、聚氨酯多孔球、不锈钢叠螺机、活性生物填料、人工仿水草绳
- 主营：格栅机、刮泥机、砂水分离器、钢丝绳格栅除污机、反捞式格栅除污机、细格栅型号、纤维转盘过滤器、内进流网版格栅清污机、吸泥机、反冲洗微滤机、旋流沉沙器、转鼓精密过滤器、机械格栅、回转式格栅清污机、回转格栅机、周边传动刮泥机材质、行车式刮吸泥机、桥式吸砂机、虹吸式刮泥机、耙齿捞渣机、全桥式刮泥机、滤布滤池、滚筒微滤机、内进流网版细格栅、桁车式刮泥机
- 主营：铁闸门、拦截设备、清理装置、回转式清污机
- 主营：刮泥机、吸泥机、中心传动刮泥机、格栅除污机、内进流网版格栅除污机、反捞式格栅除污机、钢丝绳格栅除污机、周边传动刮泥机、行车式刮泥机、虹吸式刮泥机、桥式吸砂机、机械格栅、格栅清污机、回转式格栅机、滤布滤池、纤维转盘过滤器、转鼓精密过滤器、微滤机、循环式格栅机、桁架式刮泥机、链条式刮泥机、提耙式刮泥机、刮吸泥机、全桥式刮泥机、耙齿式格栅机
- 主营：钢闸门、圆拍门、启闭机、除污机、水闸门、卷扬机、拉闸门、止水带、清污机、圆闸门、拦污栅、格栅机、启闭器、拍门阀、铸铁闸门、钢制闸门、螺杆启闭机、卷扬启闭机、拍门、钢坝、闸门
- 主营：一体化泵站、玻璃钢化粪池、玻璃钢泵站、雨水提升泵站、缠绕化粪池、一体化预制泵站、灌溉泵站、污水提升泵站、泵站一体化、雨水泵站、泵站厂家直供、污水泵站
- 主营：机械格栅、中心传动刮泥机、网板格栅、回转式格栅除污机、雨水格栅、转鼓式精密过滤器、转鼓格栅、滗水器、带式压滤机、搅拌机、转碟曝气机、叠螺式污泥脱水机、加药装置、纤维转盘过滤器
- 主营：电动阀、启闭机、排污机、清污机、钢制拍门、铸铁闸门、污水管道、自动闸门、液压钢坝、玻璃钢闸门、单向止水闸、复合材料拍门、一体钢制闸门、暗杆式钢制闸门、耐腐蚀钢制闸门、水利工程景观坝
- 主营：液压钢坝闸门、液压翻板闸门、液压坝、格栅除污机、底轴液压钢坝、液压合页坝、钢制闸门、不锈钢闸门、液压拦河坝、弧形闸门、铸铁镶铜闸门、螺杆式启闭机、卷扬启闭机、不锈钢冲洗门、液动下开式堰门、抓斗清污机、铸铁拍门、铸铁闸门、机闸一体闸门、钢坝闸、液压翻板坝、球墨铸铁闸门、不锈钢旋转堰门、液压升降坝、浮箱拍门、渠道闸门
- 主营：--
- 主营：硅胶管、塑料abs、排水帽、格栅除污机、过滤球、pp悬浮球、花篮喷头、泡沫滤珠、环保配件、窝活性炭、曝气软管、abs絮凝球、软性填料、陶瓷刚玉、烟斗喷头、定制污水、纤维滤料、面悬浮球、橡胶平板、塑料pp螺旋、tj塑料铸铁、胶盘式膜片、管道过滤器、旋流曝气管、生物绳填料、平板曝气头
- 主营：铸铁闸门、螺杆启闭机
- 主营：潜水搅拌机、潜水推流器、双曲面搅拌机、回转式格栅除污机、回转耙式格栅除污机、桨式搅拌机、框式搅拌机、立式环流搅拌机、污泥回流穿墙泵、推流搅拌曝气机、中心传动刮泥机、中心传动浓缩机、周边传动刮泥机、旋转式滗水器、砂水分离器、旋流沉砂器、无轴螺旋输送机、全自动加药装置、无轴螺旋输送压榨机、水翼搅拌机、电动泥斗、悬挂式推流器、射流曝气机、离心曝气机、螺旋压榨机
- 主营：内进流网板细格栅、纤维转盘过滤器、转鼓格栅、回转式格栅除污机、阶梯式网板格栅除污机、转鼓精密过滤器、转鼓微滤机、转鼓浓缩机、反捞式格栅、螺旋压榨机、高排水压榨机、螺旋输送机、刮板输送机、三厢加药装置、叠螺式污泥脱水机
- 主营：叠螺机、叠螺污水脱泥机、叠螺式污泥脱水机、耙齿格栅除污机、干湿分离机、固液分离机、斜筛式固液分离机、耙齿格栅、pam加药机、螺旋输送压榨机
- 主营：刮泥机、中心传动刮吸泥机、周边传动刮泥机、格栅除污机、钢丝绳格栅除污机、阶梯式格栅除污机、虹吸式刮泥机、桥式吸砂机、行车式刮泥机、全桥式刮泥机、链条式刮泥机、机械格栅、内进流网板式格栅机、转鼓式格栅机、外进水微滤机、内进水微滤机、滚筒式微滤机、纤维转盘过滤器、滤布滤池、转鼓精密过滤器、旋流沉沙器、机械格栅机、刮泥机型号、全自动刮泥机、内进流网版格栅机
- 主营：潜水搅拌机、潜水曝气机、微纳米曝气机、机械格栅除污机、喷泉曝气机、推流曝气机
- 主营：过滤器、刮泥机、焚烧炉、废气处、过滤机、沉降罐、工业废水、燃烧设备、净化设备、机械格栅、反应设备、医院污水、焚烧设备、滤膜组件、刮吸泥机、工业循环水、燃烧分解炉、布袋除尘器、处理环保设备、废气净化装置、泥水分离设备、废气治理设备
- 主营：接触室、格栅机、搅拌机、格栅除污机、气浮机、消毒池、气浮设备、粉碎格栅、加药装置、气浮装置、提升泵站、预制泵站、一体化气机、一体式泵站、粉碎性格栅、沉淀一体机、环流搅拌器、低速推流器、格栅破碎机、潜水搅拌器、潜水推流器、水下推流器、玻璃钢泵站、粉碎型格栅、一体化泵站
- 主营：刮泥机、滗水器、除砂机、雨水格栅除污机、双绞刀泵、混合装置、机械格栅、增氧装置、污水处理设、潜水排污泵、化工搅拌器、潜水污泥泵、液下搅拌机、螺旋输送机、潜水增氧机、螺旋压榨机、推流曝气机、浮水增氧机、潜水搅拌机、抬耙刮吸泥机、不锈钢搅拌器、不锈钢刮渣机、双曲面搅拌机、离心曝气设备、微孔曝气增氧机
- 主营：粉碎格栅、管式粉碎格栅、多电机粉碎格栅、格栅除污机、FS粉碎格栅除污机、DFS粉碎格栅、WFS粉碎格栅、一体化泵站、微滤机、机械格栅、阶梯式网板格栅、钢丝绳格栅、污泥切割机、侧入式搅拌机、加拿大ITT粉碎格栅、无鼓粉碎格栅、单转鼓粉碎格栅、双转鼓粉碎格栅、不锈钢粉碎格栅、渠道式粉碎格栅、合资粉碎型格栅、泵站粉碎格栅、内进流格栅、非金属孔板式细格栅、内进流孔板细格栅
- 主营：环保设备、潜水搅拌机、太阳能曝气机、回转耙式格栅除污机、微纳米曝气机、污水处理设备、潜水泵、刮吸泥机、穿墙搅拌器、增氧曝气机、造流增氧机、搅拌两用机、潜水增氧机、曝气增氧机、环流搅拌机、水下增氧机、河道增氧设备、混合搅拌设备、混合增氧设备、曝气搅拌设备、离心式曝气机、双曲面搅拌机、立式混合搅拌器、污水混合搅拌器、景观喷泉曝气机
- 主营：一体化污水处理设备、厌氧反应器、厌氧塔、回转式格栅除污机、带式压滤机、气浮机、无阀过滤器
- 主营：水库铸铁闸门、铸铁镶铜闸门、钢坝、格栅除污机、液压坝、门式冲洗系统、堰门、智能一体化闸门、拍门、启闭机、平板滤网、机械格栅、钢制闸门、限流闸门
- 主营：铸铁闸门、液压钢坝闸门、启闭机、机械捞渣除污机、不锈钢闸门
- 主营：一体化气浮机、固液分离机设备、全自动机械格栅、格栅除污机批发、橡胶真空带式过滤机、式一体化污水处理设备、污水处理设备厂家、全自动加药装置、回转式机械格栅机、一体化厌氧反应器、UASB厌氧反应器、IC厌氧塔、水产养殖过滤设备
- 主营：推流器、调节池、增氧机、细格栅除污机、搅拌机、推进器、搅拌器、废水处理、预制泵站、搅拌设备、刮吸泥机、浓缩排泥机、机械格栅机、潜水轴流泵、污泥回流泵、离心曝气机、喷泉曝气机、行车吸泥机、周边吸泥机、废水稠厚器、清洗格栅机、皮带输送机、太阳能喷泉、射流曝气机、不锈钢格栅机