齿轮油泵选型依据应根据工艺流程，系统要求，从液体性质、液体输送量、装置压力、管路布置以及操作运转条件五个方面加以考虑。

Gear oil pump selection basis should be based on process, system requirements, from liquid properties, liquid throughput, unit pressure, piping layout and operation operation condition five aspects into consideration.

    1、液体性质，包括液体介质名称，物理性质，化学性质和其它性质，物理性质有温度c密度d，粘度u，介质中固体颗粒直径和气体的含量等，这涉及到系统的压力，所需动力计算和合适泵的类型：化学性质，主要指液体介质的化学腐蚀性和毒性，是选用齿轮油泵材料和选用那一种轴封型式的重要依据。

    1、liquid properties, including liquid medium name, physical properties, chemical properties and other properties, physical properties have temperature c density d, viscosity u, medium solid particle diameter and gas content and so on, this involves the system pressure, the dynamic calculation and appropriate pump types: chemical properties, mainly refers to the liquid medium chemical corrosive and toxic, it is to choose gear oil pump materials and choose the kind of shaft seal type the important basis.

    2、流量是选配齿轮油泵的重要性能数据之一，它直接关系到整个装置的的生产能力和输送能力。选摆线齿轮泵时，以最大流量为依据，兼顾正常流量，在没有最大流量时，通常可取正常流量的1.1倍作为最大流量。一般工业用泵在工艺流程中可以忽略管道系统中的泄漏量，但必须考虑工艺变化时对流量的影响。

    2、flow is optional gear oil pump of the important one of performance data, it directly related to the whole device of production capacity and transport capacity. Choose cycloidal gear pump, the maximum flow as the basis, give attention to two or morethings normal flow, there is no maximum flow, usually desirable normal flow of 1.1 times as the maximum flow. General industrial pump in the process can be neglected in the pipeline system leakage, but must consider process changes to the influence of flow.

    3、装置系统所需的压力是选齿轮油泵的又一重要性能数据，一般要用放大5%—10%余量后压力来选择摆线齿轮泵的型号。这包括：吸油池压力，排油池压力，管道系统中的压力降（压力损失）。

    3、device that required by the system pressure is choose gear oil pump another important performance data, generally with amplification 5% - 10% allowance after pressure to choose cycloidal gear pump model. This includes: oil suction tank pressure, discharge of oil tank pressure, pipeline system of pressure drop (pressure loss).

    4、齿轮油泵装置系统的管路布置条件指的是送液高度、送液距离、送液走向。以便进行系统压力计算和动力校核。管道系统数据（管径、长度、管道附件种类及数目，吸油池至压油池的几何标高等）。

    如果需要的话还应作出装置特性曲线。在设计布置管道时，应注意如下事项：

    4、gear oil pump device system piping layout condition refers to send liquid height, send fluid distance, send fluid to. In order to carry on the system pressure calculation and power check. Piping system data (pipe diameter, length and piping fittings types and number, oil absorption pool to pressure oil pool geometry level, etc.).

If there is any need should also make device characteristic curve. In the design of layout pipeline, should pay attention to matters as follows:

    A、合理选择管道直径，管道直径大，在相同流量下、液流速度小，阻力损失小，但价格高，管道直径小，会导致阻力损失急剧增大，使所选泵的压力增加，配带功率增加，成本和运行费用都增加。因此应从技术和经济的角度综合考虑。

    A、the reasonable choice of pipe diameter, pipe diameter is big, in the same flow rate, flow velocity is small, the resistance loss is small, but the price is high, the pipe diameter is small, can lead to resistance loss increase sharply, make the selected pump pressure increases, equipped with power increases, the cost and operation cost are increased. So from the point of view of technology and economic comprehensive consideration.

    C、管道布置应尽可能布置成直管，尽量减小管道中的附件和尽量缩小管道长度，必须转弯的时候，弯头的弯曲半径应该是管道直径的3～5倍，角度尽可能大于90℃。

    B、exhaust pipe and tube joint should consider to withstand maximum pressure.

    C、 pipe layout should as far as possible arrangement into straight pipe, minimize the pipeline accessories and try to reduce pipe length, must turn, bend bending radius should be pipe diameter 3 ~ 5 times, as far as possible Angle is greater than 90 ℃.

   D、泵的排出侧必须装设阀门（溢流阀）和逆止阀。阀门用来调节泵的工况点，逆止阀在液体倒流时可防止油泵反转。（当液体倒流时，会产生巨大的反向压力，使泵损坏）

   D、pump discharge side must valving (overflow valve and check valve. The valve is used to adjust pump point, check valve in liquid flow back to prevent oil pump reversal. (when liquid flow back, will produce great reverse pressure, make the pump damage)

    5、齿轮油泵的操作条件很多，如液体的操作温度、吸入侧压力（绝对）、排出侧容器压力、海拔高度、环境温度、操作是间隙的还是连续的、齿轮泵的位置是固定的还是可移的。

    虽然大多数泵总是根据不同的使用环境而定，但顾客对产品的使用寿命和效率要求却日益增长，我们的工程师在设计、选材、监控系统方面都是具有丰富经验的专家，除了发展新设计之外，还经常与用户进行经验交流，不断地改进我们现有的技术水平，为客户的工程和项目提供最佳设计方案。

    5、gear oil pump operating conditions many, such as liquid operating temperature, suction side pressure (absolute), discharge side container pressure, height above sea level, environmental temperature, operation is clearance or continuous, pump position is fixed or mobile's.

    许多客户从日本油泵株式会社中国办事处富有经验的正确选择中获得利益，广泛的产品系列和雄厚的工程技术力量，使我们能够提供既经济又耐用的油泵，保证您使用我们的产品没有后顾之忧。

Although most pump always according to the different use environment and calm, but the customer to the product service life and efficiency requirements are increasing, our engineers in design, material selection, monitoring systems are with rich experience of experts, in addition to the development of new design, but also often and users to exchange experience and constantly improve our existing technical level, for customer's engineering and project provides optimal design scheme.

Many customers from Japan pump co., China office rich experience in the correct selection of the benefit, a wide range of products and strong engineering and technical strength, enables us to provide both economic and durable oil pump, ensure that you use our products do not have trouble back at home.