Diesel pump rpm to determine

Diesel pumps in use need to pay attention and in many ways, in different industries and fields to play an important role and value in use, but the need to ensure adequate preparation and requirements, in accordance with the normal methods and principles. The structural characteristics of the diesel pump: diesel pump self-heating thermal structure, changed the traditional water cooling structure, simple structure, small size, operating cost savings, performance, use of reliable, is developed on the basis of digestion and absorption of foreign oil pump second-generation product, the basic structure in the form of single-stage single-suction cantilever foot support structure, the pump inlet suction export center vertically upwards, and with motor mounted on the base.

    Diesel pump because there can be variable transmission, self-priming ability, and can be reversed, can transport liquid containing solid particles and so on, in a sewage treatment plant, widely used in conveying water, wet sludge and flocculant liquid . Screw pump selection should follow the economic, rational and reliable principles. Ill-considered in the selection of design, use, management, maintenance will give future trouble, so the selection of a reasonable and reliable screw pump according to the actual needs of the production, both to ensure smooth production, but also reduce repair costs. Diesel pump seal characteristics: the use of imported polytetrafluoroethylene (PTFE sulphuric acid pump) to do lip seal, the seal performance leap than the rubber sealing reliability increased by 25 times, highly corrosion-resistant. Adopt the form of a combination of packing and mechanical seals, packing with high temperature resistant filler material having good thermal adaptability mechanical seal with high mechanical strength, good wear resistance of cemented carbide material, to ensure the high temperatures under the sealing performance.
The diesel pump speed selection
    Diesel pump flow and speed into a linear relationship, as opposed to low-speed diesel pumps, high-speed multi-stage pump screw pump to increase the flow and head, but significantly increased power, high-speed accelerated wear between the rotor and the stator , must make the screw pump premature failure, and high-speed diesel transfer pump stator and rotor length is very short, easy to wear, thus shortening the life of the diesel pump. The deceleration or variable speed to reduce speed, its rotational speed to maintain a more reasonable range below 300 revolutions per minute, compared with the high-speed operation of the diesel pump, life can be extended several times.
    The diesel pump is a positive displacement rotary oil pumps, barrel pump outlet end is blocked, pressure will gradually increase that exceeds a predetermined pressure value. In this case, the motor load has increased dramatically. The mechanical parts of the drive load will exceed the design value, serious will occur when the motor burned, transmission parts breakage. In order to avoid damage to the diesel pump, generally installed in the diesel pump at the outlet of the bypass relief valve outlet pressure to stabilize, to maintain the normal operation of the pump.