Pump Selection: cycloid gear pump selection (Trochoid Pump)

Trochoid Pump is a registered trademark of Japan Oil Pump Co., Ltd., mainly composed of gear, shaft, pump body, pump cover, shaft seal and other components, cycloidal arc as its gear tooth shape, Powder metallurgy material is pressed. Its compact structure, stable transportation, high efficiency, long life, low noise. Suitable for conveying solid particles and fibers, non-corrosive, the temperature is not higher than 200 ℃, viscosity of 5 ~ 1500CST lubricating oil or other similar Liquid. There are more than 880 kinds of models suitable for different traffic to choose from. According to the different requirements of users matching different performance pumps, is an important responsibility of my office.  Selection Procedure Gear pump selection basis should be based on process, system requirements, from the liquid properties, liquid delivery, device pressure, piping layout and operating conditions to be considered in five areas. 1, the liquid properties, including the name of the liquid medium, physical properties, chemical properties and other properties, the physical properties of temperature c density d, viscosity u, medium particle diameter and gas content, etc., which involves the system pressure, Power calculation and type of suitable pump: Chemical nature, mainly refers to the liquid medium chemical corrosion and toxicity, is the choice of gear pump material and the choice of an important basis for the type of shaft seal. 2, the flow rate is one of the important performance data of the gear pump, it is directly related to the entire plant's production capacity and delivery capacity. Cycloid gear pump election to the maximum flow as the basis, taking into account the normal flow, in the absence of maximum flow, it is usually desirable 1.1 times the normal flow as the maximum flow. General industrial pumps in the process can ignore the leakage in the pipeline system, but must consider the impact of process changes on the flow. 3, the pressure required to install the system is another important performance data selected gear pump, generally to enlarge the 5% -10% margin pressure to choose cycloid gear pump model. This includes: sump pressure, sump pressure, pressure drop in the piping system (pressure loss). 4, gear pump system piping system conditions refers to the delivery of liquid height, liquid distance, liquid delivery. For system pressure calculation and power check. Pipeline system data (diameter, length, type and number of pipe attachments, geometry of sump to sump, etc.). The device characteristics should also be made if necessary. In the design and layout of the pipeline, should pay attention to the following: A, a reasonable choice of pipe diameter, pipe diameter, the same flow, the flow velocity is small, the resistance loss is small, but the price is high, the pipe diameter is small, will lead to a sharp increase in resistance loss Large, so that the pressure of the selected pump increases, with increased power, the cost and operating costs have increased. Therefore, it should be considered technically and economically. B, discharge pipe and its fittings should consider the maximum pressure that can bear. C, pipe layout should be arranged as straight pipe, pipe fittings to minimize and minimize the length of the pipeline, you must turn when bending the elbow bend radius should be 3 to 5 times the pipe diameter, the angle is greater than 90 ℃. D, the discharge side of the pump must be installed valves (relief valve) and check valve. The valve is used to adjust the operating conditions of the pump. The check valve prevents the pump from reversing when the liquid is flowing backwards. (When the liquid back, it will have a huge reverse pressure to pump damage) 5, the gear pump operating conditions are many, such as the liquid operating temperature, suction side pressure (absolute), discharge side of the container pressure, altitude, ambient temperature , The operation is intermittent or continuous, gear pump position is fixed or removable. Although most of the pumps are always designed for different environments, the service life and efficiency requirements of our customers are increasing. Our engineers are experienced experts in the fields of design, material selection and monitoring. In addition to developing new In addition to design, we often exchange experiences with our customers, continually improve our existing technology and provide the best designs for our clients' projects and projects. Many of our customers benefit from the experience and right choices of the JFCO China office. Our extensive product range and extensive engineering expertise enable us to provide an economical and durable pump that will ensure your products are safe to use.