Melt pump belongs to positive displacement gear pump, adopt a pair of external gearing cylindrical gears（straight gear, helical gear, herringbone gear） with relative turning to deliver high viscosity fluid. All gears and fitting surfaces are accurate grinded, and obtain precision flow by controlling the assembling clearance strictly. Gear and pump body varies to different materials. ZB-B series are produced by nickel-chrome alloy steels and high temperature tool steels. ZB-H series are produced by import CPM tool steels or titanium-tantalum alloys, the rigidity is HRC62-68 and they are wear-resistant.
1. ZB-B series: working temperature: ≤400℃（750℉）， cleaning temperature:≤450℃（850℉）， outlet pressure:≤40Mpa（6000psi）， visocity:≤30000pa.s
2. ZB-H series: working temperature: ≤510℃（950℉）， cleaning temperature:≤590℃（1100℉）， outlet pressure:≤70Mpa（10.000psi）， max. Differential pressure: 50Mpa （7.000psi）， visocity: ≤20.000pa.s
3. Sealing: Helical sealing and packing sealing. Mechanical seal can be adopted according to customers' needs.
4. Drive motor+reducer+universal coupling+pump body, you can use frequency control or direct current governor for the motor and adjust the flow to your need optionally. We suggest using servo motor for speed governing if the products are high precision.
5. Heating melt pump adopts electric heating or heat medium heating and the temperature of the melt can be controlled accurately.
一、使用范围
熔体泵属于容积式齿轮泵，采用一对外齿合的圆柱齿轮（直齿、斜齿、人字齿）相对转动来运输送高黏度的流体。所有齿轮和配合面都经过精磨、并严格控制装配间隙来获得精确的流量。齿轮和泵体根据不同的共况，ZB-B系列采用铬镍合金钢、高温工具钢材料；ZB-H系列采用进口CPM工具钢或钛钽合金材料，整体淬火，硬度HRC62-68，耐磨性好。
1.ZB-B系列：工作温度：≤400℃（750℉），清洗温度：≤450℃（850℉），出口压力≤40Mpa（6,000psi），黏度：≤30000Pa.s
2.ZB-H系列：工作温度：≤510℃（950℉），清洗温度：≤590℃（1100℉），出口压力≤70Mpa（10,000psi），大压差：50Mpa（7,000psi）， 黏度：≤20000Pa.s
3.密封 一般采用螺旋密封和填料密封，也可根据客户要求采用其他机械密封形式。
4.驱动 电机+减速机+万向联轴器+泵体，电机采用变频调速或伺服调速，可以随意调至所需流量。对于产品看、精度要求高的，建议采用伺服电机调速。
5.加热 熔体泵采用电加热棒加热或热传媒加热，可以精确控制熔体温度。
