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、使用范圍
熔體泵屬于容積式齒輪泵，采用一對外齒合的圓柱齒輪（直齒、斜齒、人字齒）相對轉(zhuǎn)動來運輸送高黏度的流體。所有齒輪和配合面都經(jīng)過精磨、并嚴格控制裝配間隙來獲得精確的流量。齒輪和泵體根據(jù)不同的共況，ZB-B系列采用鉻鎳合金鋼、高溫工具鋼材料；ZB-H系列采用進口CPM工具鋼或鈦鉭合金材料，整體淬火，硬度HRC62-68，耐磨性好。
1.ZB-B系列：工作溫度：≤400℃（750℉），清洗溫度：≤450℃（850℉），出口壓力≤40Mpa（6,000psi），黏度：≤30000Pa.s
2.ZB-H系列：工作溫度：≤510℃（950℉），清洗溫度：≤590℃（1100℉），出口壓力≤70Mpa（10,000psi），大壓差：50Mpa（7,000psi）， 黏度：≤20000Pa.s
3.密封 一般采用螺旋密封和填料密封，也可根據(jù)客戶要求采用其他機械密封形式。
4.驅(qū)動 電機+減速機+萬向聯(lián)軸器+泵體，電機采用變頻調(diào)速或伺服調(diào)速，可以隨意調(diào)至所需流量。對于產(chǎn)品看、精度要求高的，建議采用伺服電機調(diào)速。
5.加熱 熔體泵采用電加熱棒加熱或熱傳媒加熱，可以精確控制熔體溫度。
