The circular arc gear pump is mainly composed of gear, shaft, pump body, pump cover and shaft end seal. It takes cycloidal arc as its gear tooth profile and is made by wear resistant powder metallurgy material. It has compact layout, smooth transportation, high efficiency, long life and low noise. It is suitable for transporting lubricating oil or other similar liquids without solid particles and fibers, non corrosive, temperature less than 200 degrees, and viscosity of 5~1500CST. More than 880 types of models suitable for different flows are available for selection.
Selection process
The pipeline placement conditions of the gear pump equipment system refer to the height of the feed, the distance of the delivery of the liquid and the direction of the delivery of the liquid. In order to carry on the system pressure calculation and the power check. Pipeline system data (pipe diameter, length, variety and number of pipe accessories, oil pool to a few standard of oil pool).
If necessary, the equipment characteristic curve should also be made. The circular arc gear pump should pay attention to the following items when planning the placement of the pipeline.
Reasonable selection of pipe diameter, pipe diameter, in the same flow rate, flow velocity is small, the resistance loss is small, but the price is high, small diameter pipeline will lead to resistance loss increases rapidly, so that the selected pump pressure added, with power added cost and operation cost are added. Therefore, we should think synthetically from the viewpoint of technology and economy. The discharge pipe and its pipe joint should consider the maximum pressure that can be accepted.
Pipe placement should be arranged into straight pipes, minimizing the accessories and minimizing the length of pipes. It is necessary for the turning time to bend the radius of elbow should be 3~5 times of the diameter of the pipe, and the viewing point can be greater than 90 degrees.
The discharge side of the pump is necessary to install the valve (overflow valve) and reverse check valve. The valve is used to regulate the working conditions of the pump, and the reverse check valve can prevent the oil pump from turning when the liquid is reversed. (when the liquid is reversed, there will be an infinite reverse pressure to cause the pump to be damaged).
The operation conditions of the circular arc gear pump are many, such as the operation temperature of the liquid, the suction side pressure (positive), the discharge side container pressure, the altitude, the ambient temperature, and the operation is continuous. The location of the gear pump is fixed or removable.
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