双螺杆泵的特点：
无搅动、无脉动、平稳输送各种介质，由于泵体结构保证泵的工作原件内始终存有泵送液体作为密封液体，所有的泵有很强的自吸能力，且能汽液混输。
泵的特殊设计保证了泵有高吸入性能却很小的NPSHr值。
采用独立润滑的外置轴承，允许输送各种非润滑性介质。
采用同步齿轮传动，转动零件互不接触，即使短时间干转也没有危险（≤1~2min）
卧式、立式、带加热套等各种结构形式齐全，可以输送各种清洁的不含固体颗粒的低粘度或高粘度介质，选用正确的材质，甚至可输送许多腐蚀性介质。
性能范围：
可输送各种不含固体颗粒的介质。
压力范围：4.0Mpa
流量范围：1-2000m3/h
温度范围：-15℃-280℃
应用：
造船：用做船用装载泵、扫仓泵、船用压载泵、主机滑油泵、燃油输送泵、燃油喷射泵、货油泵。
电厂：重油及原油输送泵、重油燃油泵。
化工：用做各种酸碱盐液以及树脂、颜料、油墨、油漆、甘油、石蜡的输送泵。
炼油厂：用以输送各种加热油、沥青油、焦油、乳胶漆，及用做油轮、油池、油罐车等各种油田的装载及卸载。
食品：用于酒厂、食品厂、糖厂、罐头厂等，输送酒精、蜂蜜、糖汁、牙膏、牛奶、酱油、植物油、动物油、葡萄酒等。
油田：输送各种油品、原油等。
所输送介质“渣油”的简介：
原油经减压蒸馏所得的残余油。又称减压渣油。有时将从常压蒸馏塔底所得的重油称为常压渣油。色黑粘稠，常温下呈半固体状。其性质与原油性质有关。在石油炼厂中，渣油常用于加工制取石油焦、残渣润滑油、石油沥青等产品，或作为裂化原料。在石油化工生产中，渣油可通过部分氧化法生产合成气或氢气，或作为蓄热炉裂解制乙烯的原料。渣油另一重要用途是用作燃料油。The residual oil obtained by vacuum distillation of crude.Also known as vacuum residuum.Sometimes called heavy oil from atmospheric distillation bottom atmospheric residue.Half solid color black sticky, room temperature.The nature related to the properties of crude oil.In oil refinery, the residue is often used in processing and producing petroleum coke, residual oil, asphalt and other products, or as cracking feedstock.In petrochemical production, the residual oil by partial oxidation process to produce synthetic gas or hydrogen, or as raw materials for the pyrolysis of regenerative furnace.Another important use residue is used as fuel oil.
渣油主要是指从常减压装置底层出来的重组分，其中常压装置出来叫做常压渣油，减压装置出来的叫做减压渣油。渣油一般作为焦化原料来使用。油浆主要是指炼厂催化装置底层出来的重组分，主要作为燃料来使用。Residue from often pressure-relief device is mainly refers to the bottom of a restructuring, atmospheric pressure device out of it is called atmospheric residue, pressure-relief devices called vacuum residuum.Residue as raw materials for the coking commonly to use.Slurry is mainly refers to the bottom of a restructuring in the refinery catalytic unit, mainly used as fuel.
输送渣油泵Transporting slag pump
适用范围：适用于输送不含固体颗粒和纤维，无腐蚀性的高温液体，介质温度可达250oC，粘度为5-1500cst。 Scope of application: suitable for conveying containing no solid particles and fibers, non-corrosive, high temperature liquid medium temperature up to 250 oc, viscosity of 5 to 1500 CST.
输送渣油泵用途：广泛用于塑料橡胶加工工业，纺织印染工业，涂料工业，木材加工工业，食品工业、造纸印刷等液态热载体加热等各种工业。 2CG高温齿轮泵结构特点：本系列的高温齿轮泵由齿轮、轴、泵体泵盖、轴端密封等零部件组成，所有零件均选用合适的耐温材料制造。2CG高温齿轮泵内运转零件均利用其输送的介质润滑。Transporting slag pump USES: widely used in plastics and rubber processing industry, textile printing and dyeing industry, coating industry, wood processing industry, food industry, paper making, printing and other liquid heat carrier heating and other industries.2 CG high gear pump structure features: this series of heat pump by gear, shaft, pump body, pump cover, shaft end sealing parts, such as composition, all the parts were picked from the appropriate heat resistance materials.2 CG high gear pump moving parts are used in the transmission medium lubrication.