齒輪油泵選型依據應根據工藝流程，系統要求，從液體性質、液體輸送量、裝置壓力、管路布置以及操作運轉條件五個方面加以考慮。

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、液體性質，包括液體介質名稱，物理性質，化學性質和其它性質，物理性質有溫度c密度d，粘度u，介質中固體顆粒直徑和氣體的含量等，這涉及到系統的壓力，所需動力計算和合適泵的類型：化學性質，主要指液體介質的化學腐蝕性和毒性，是選用齒輪油泵材料和選用那一種軸封型式的重要依據。

    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、流量是選配齒輪油泵的重要性能數據之一，它直接關系到整個裝置的的生產能力和輸送能力。選擺線齒輪泵時，以最大流量為依據，兼顧正常流量，在沒有最大流量時，通�？扇≌�常流量的1.1倍作為最大流量。一般工業用泵在工藝流程中可以忽略管道系統中的泄漏量，但必須考慮工藝變化時對流量的影響。

    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、裝置系統所需的壓力是選齒輪油泵的又一重要性能數據，一般要用放大5%—10%余量后壓力來選擇擺線齒輪泵的型號。這包括：吸油池壓力，排油池壓力，管道系統中的壓力降（壓力損失）。

    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、齒輪油泵裝置系統的管路布置條件指的是送液高度、送液距離、送液走向。以便進行系統壓力計算和動力校核。管道系統數據（管徑、長度、管道附件種類及數目，吸油池至壓油池的幾何標高等）。

    如果需要的話還應作出裝置特性曲線。在設計布置管道時，應注意如下事項：

    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、合理選擇管道直徑，管道直徑大，在相同流量下、液流速度小，阻力損失小，但價格高，管道直徑小，會導致阻力損失急劇增大，使所選泵的壓力增加，配帶功率增加，成本和運行費用都增加。因此應從技術和經濟的角度綜合考慮。

    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、管道布置應盡可能布置成直管，盡量減小管道中的附件和盡量縮小管道長度，必須轉彎的時候，彎頭的彎曲半徑應該是管道直徑的3～5倍，角度盡可能大于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、泵的排出側必須裝設閥門（溢流閥）和逆止閥。閥門用來調節泵的工況點，逆止閥在液體倒流時可防止油泵反轉。（當液體倒流時，會產生巨大的反向壓力，使泵損壞）

   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、齒輪油泵的操作條件很多，如液體的操作溫度、吸入側壓力（絕對）、排出側容器壓力、海拔高度、環境溫度、操作是間隙的還是連續的、齒輪泵的位置是固定的還是可移的。

    雖然大多數泵總是根據不同的使用環境而定，但顧客對產品的使用壽命和效率要求卻日益增長，我們的工程師在設計、選材、監控系統方面都是具有豐富經驗的專家，除了發展新設計之外，還經常與用戶進行經驗交流，不斷地改進我們現有的技術水平，為客戶的工程和項目提供最佳設計方案。

    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.

    許多客戶從日本油泵株式會社中國辦事處富有經驗的正確選擇中獲得利益，廣泛的產品系列和雄厚的工程技術力量，使我們能夠提供既經濟又耐用的油泵，保證您使用我們的產品沒有后顧之憂。

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.