挤出机泵  制造商、经销商、供应商

WITTE offers pumps for applications in borderline areas. We develop durable, standardised or customised solutions of the highest precision. For more than 35 years WITTE has specialised in the development of gear pumps for industrial applications. It is our endeavour to always guarantee the customer the highest level of process reliability and to match the pumps exactly to the application and the process. In this way we guarantee the best efficiency and durability of our pumps. Reduced maintenance costs and intervals due to matched material pairings guarantee a fast payback the investment costs. We have been working successfully for many years with well-known companies and innovation drivers from the industry and are constantly developing new solutions. Should we not have the right solution at hand, we develop together with our customers the suitable product. We accompany our customers during the entire project from the prototype to the final product. Experts from sales, project management and design form the project and development team and keep us informed of the project status at all times. More than 35 years of experience and the knowledge of our competence team flow into each of our pumps.

壳    体
耐热碳钢，如1.6582，不锈钢，如1.4313，可带涂层
齿    轮
渗氮钢、工具钢、特种钢，可带涂层。齿形为斜齿或人字齿（用于出口压力脉动特别低的工况）
滑动轴承
银镍合金、铜铝合金、工具钢及其它特殊材料
轴    封
螺旋密封、填料密封
加热系统
电加热，如加热棒，以及端盖加热
粘    度
≤40,000Pa.s
温    度
≤400°C (752°F)
入口压力
真空到最大120 bar (1740 psig)
压    差
≤250 bar (3225 psig)，对于特殊型号的泵能承受更高的压差
以上数值为最大允许值，在某些情况下不能同时达到
规    格
从22/22 (4.7毫升/转 – 10公斤/小时) 到280/280 (12,000 毫升/转)。也可提供中间系列以及高压的窄齿系列，如140/90（690毫升/转）

聚合物
PS • PET • PVC • PC • PA • PMMA • HDPE • LDPE • LLDPE • PP • Polysulphones • PEEK
食品工业
甘草、口香糖
螺旋密封（VS）
螺旋密封是威特EXTRU泵和BOOSTER泵的标准轴密封。适用于高粘物料和高入口压力的动密封，它可带加热或冷却夹套。动密封适用于高温高压，它只适用于入口为正压及粘度大于10Pa.s的物料。如果需要，物料的粘度可以通过辅助的冷却系统来提高。
最高温度: 450°C (850°F)
粘度: 10,000 ~ 40,000,000 mPas (cP)
填料函密封
填料函密封是威特泵的简单的静密封。也可增加密封液系统。其适用性类似螺旋密封。标准的填料材料为带增强柔性纤维的膨胀石墨，但也可选用其他材料。
最高温度: 350°C (660 °F)
粘度: 最高到40,000,000 mPas (cP)