Overview
The star coupling gear pump integrates a star-shaped flexible coupling with a gear pump mechanism, creating a robust solution for industrial fluid transfer. This hybrid design addresses common challenges like shaft misalignment, vibration, and high torque, making it indispensable in heavy-duty applications. Unlike standard gear pumps, the star coupling absorbs shocks and compensates for minor misalignments, reducing wear on bearings and seals. Its modular construction allows easy maintenance, while the gear pump ensures consistent flow rates even with viscous fluids.
Structure and Working Principle
The pump consists of two primary components: a star-shaped elastomeric coupling (often Hytrel or polyurethane) and a gear pump assembly with intermeshing gears. The coupling connects the drive shaft to the pump, transmitting torque while accommodating angular/parallel misalignment. Fluid enters the inlet port, trapped between gear teeth and the pump housing, then moves to the discharge port as gears rotate. The star coupling’s flexibility prevents rigid transmission of forces, protecting the pump from excessive stress. Seals and bearings are typically rated for high-pressure operations (up to 300 psi).
Key Features
1. **Misalignment Tolerance**: Compensates up to 3° angular and 0.1-inch parallel misalignment, reducing downtime. 2. **Vibration Damping**: Star coupling absorbs shocks, minimizing noise and extending component life. 3. **High Efficiency**: Gear design ensures 85–92% volumetric efficiency with minimal slip. 4. **Material Versatility**: Available in corrosion-resistant alloys for aggressive fluids (e.g., acids, solvents). Additional features include optional heating jackets for temperature-sensitive fluids and ATEX certifications for explosive environments.
Application Areas
Star coupling gear pumps are deployed in industries requiring precise fluid handling under mechanical stress: - **Chemical Processing**: Transferring abrasive slurries or corrosive liquids. - **Oil & Gas**: Metering additives or circulating hydraulic fluids in drilling rigs. - **Food & Pharma**: Handling viscous products like syrups or creams with hygienic designs. - **Manufacturing**: Lubrication systems for heavy machinery with variable alignment. Their adaptability makes them suitable for mobile equipment (e.g., construction vehicles) where shock loads are frequent.
Maintenance and Precautions
**Routine Checks**: Inspect coupling elastomers for cracks every 500 operating hours; replace if hardened or worn. Monitor gear teeth for pitting or scoring. **Lubrication**: Use manufacturer-recommended grease for couplings and bearings. For gear pumps, ensure fluid viscosity matches design specifications to prevent cavitation. **Safety**: Isolate power before servicing. Avoid running dry—even briefly—to prevent seal damage. For hazardous fluids, opt for double mechanical seals with leak detection.
B2B Procurement Guide
1. **Specifications**: Define flow rate (e.g., 10–500 GPM), pressure range, and fluid properties (viscosity, abrasiveness). 2. **Material Compliance**: Verify wetted parts compatibility (e.g., 316L stainless steel for chlorides). 3. **Certifications**: Look for ISO 9001, API 676, or EHEDG approvals based on industry needs. 4. **Supplier Evaluation**: Prioritize vendors with field-proven designs and responsive technical support. Budget for spare couplings and seal kits to minimize downtime. For custom requirements (e.g., non-standard ports), lead times may extend to 8–12 weeks.
Related Manufacturers
- 主营：KRACHT泵、RICKMEIER泵、克拉克油泵、联轴器、瑞克梅尔油泵、螺杆泵、输油泵、海林柯螺杆泵、德国原装油泵、进口油泵现货、克拉克泵现货
- 主营：制动盘、重载鼓、梅花爪、联轴器、双法兰星、nl尼龙齿、双排链条、制动轮鼓、蛇形弹簧、弹性膜片、接中间套、法兰万向、十字万向、尼龙内齿、壳滚子链、带制动轮、弹性梅花、伸缩万向、中间套鼓、kc系列链条、带罩壳蛇簧、大扭矩链条、不锈钢膜片、双排滚子链、单法兰膜片
- 主营：梅花联轴器、星型联轴器、尼龙柱销联轴器、十字滑块联轴器、膜片联轴器、凸缘联轴器、联轴器膜片、尼龙齿式联轴器、联轴器外壳、鼓形齿式联轴器、轮胎联轴器、弹性柱销联轴器、滚子链联轴器
- 主营：鼓形齿式联轴器、膜片联轴器、弹性柱销联轴器、弹性套联轴器、十字滑块联轴器、梅花联轴器、星型联轴器、柱销齿式联轴器、夹壳联轴器、链条联轴器、蛇簧弹性联轴器、蛇型弹簧联轴器、凸缘联轴器、齿式联轴器、XL 星型联轴器、JQ型夹壳联轴器、GIICL型鼓型齿式
- 主营：精密回转支承、齿轮、齿圈、齿轮轴、花键轴、转盘轴承、回转轴承、回转支撑、大轴承
- 主营：减速机传动、铝合金连铀器、连轴器、尼龙套联轴器、鼓形齿式联轴器、膜片联轴器、梅花联轴器、柱销联轴器、联轴器、弹性套柱销联轴器、齿式联轴器、星型联轴器、联轴器膜片、轮胎式联轴器、万向联轴器、弹簧联轴器、链轮联轴器、尼龙内齿联轴器、爪式联轴器、伞齿轮、锥齿轮、蜗轮蜗杆组件、滚子链连轴器
- 主营：玻璃吸盘、刮板机、支柱、半联轴器电机端、绞车、传感器、喷浆机、喷涂机、拆缸机、柴油机水泵、乳化液泵站、氢氧化钙、订扣机、液压扳手、真空泵、滑移装载机、电缆夹板、闸瓦、滤液泵、试验台、装载机、气动绞车、变压器、移动变电站
- 主营：NOP油泵、双向摆线泵、进口冷却泵、摆线齿轮泵、柱塞泵、变量柱塞泵、电磁阀、电磁换向阀、哈伯叶片泵、哈伯双联叶片泵
- 主营：自吸泵、粘油泵、食品泵、齿轮泵、kcb油泵、树脂泵、车载泵、船用泵、凸轮泵、导热油、内啮合、工业泵、输送泵、拌合站、加油泵、减速机、105螺杆、重油泵、渣油泵、圆弧泵、外润滑、装车泵、kcb防爆、汽油泵、转子泵
- 主营：冷冻机专用齿轮泵、大流量齿轮油泵、油泵、螺旋泵
- 主营：渣油泵、转子油泵、齿轮油泵、稠油齿轮泵、电动齿轮泵、润滑齿轮泵、卧式齿轮泵、循环油泵、增压油泵、磨床油泵、电动油泵、车床油泵、高温沥青泵、卧式点火泵、铸铁重油泵、铸铁增压泵、化工重油泵、高温热油泵、铸铁沥青泵、电动重油泵、防爆流程泵、注塑机油泵、卧式重油泵
- 主营：复合阀、调压阀、减压阀、齿轮泵、手动阀、稳定阀、比例阀、注塑机、单向阀、电动泵、电磁阀、截止阀、止回阀、高压泵、背压阀、方向阀、转子泵、铸铁阀、液压泵、电液阀、插装阀、叠加阀、柱塞泵、电机泵、油压阀
- 主营：传感器、密封胶、滤芯、汽轮机配件、汽缸密封脂
- 主营：锁紧盘、胀紧套、皮带轮、联轴器、蛇形弹簧联轴器、鼓形齿联轴器、安全联轴器、梅花联轴器、星形联轴器、链条联轴器、膜片联轴器、柱销联轴器、轮胎联轴器、高弹联轴器、十字滑块联轴器、万向联轴器、球笼联轴器、凸缘联轴器、SWC联轴器、扭力限制器、弹簧、万向节、锥套皮带轮、Z9胀紧套、Z8胀紧套
- 主营：进口油压泵
- 主营：链轮、齿条、齿轮、联轴器、矩形花键连接轴、机械配件、机械传动、蜗杆涡轮、非标定制双节距链轮、45#碳钢材质、齿圈、滑轮、轨道、大节距非标链轮、传动轴、车轮、伞齿轮、大型齿条齿轮齿圈、链条、各种非标配件
- 主营：液压滤芯、液压过滤器、液压站、齿轮泵、离心过滤器、schroeder、OMT、norman、滤芯、离心机