Crankshaft is an important part of the submersible pump, in the course of the use, it is often damaged, how to try to maintain its life, as we urgently need to solve the problem, then we introduce the submersible pump crankshaft daily maintenance measures:
1.Submersible pump crankshaft normal operation of the submersible pump every 8h maintenance time, by the shift pump workers, every 2h tour check a submersible pump and motor operation.
2.Check the submersible pump oil is in line with the requirements, there are problems in a timely manner to add or replace, to ensure that the lubrication of the normal work.
3.Check and adjust the submersible pump packing letter, and to ensure that the fixed, connecting bolts without loosening.
4.Check the unit vibration operation without abnormal sound, should meet the requirements of this standard, the instrument action sensitive and accurate.
5.Submersible pump crankshaft equipment to deal with leakage and do a good sanitation work.
The above is about the submersible pump crankshaft daily maintenance of the relevant matters related to the introduction, in the daily use of attention to these points will be able to ensure the normal operation of the submersible pump to extend its service life.
At present, China’s low-end pump industry has been basically realized in the field of domestic, high-end areas also by virtue of cost, service and other advantages to achieve the gradual replacement of imported products, and is committed to the pump industry, international competition. But in the impact of internal and external factors and many uncertain factors under the impact of domestic-funded enterprises in order to achieve the simultaneous development of the market, need to speed up the casting of “domestically produced advantages” in order to counter the international giants of flooding the pump market in China.
China’s pump industry is now in a relatively favorable demand for the development period, but also because of this many companies are trying to valve enterprises to expand the scale to achieve long-term or sustainable growth. At the same time, China’s pump industry has also ushered in a lot of new subjects to join. However, it is precisely because the collision between the two sides led to a “big but not strong,” the status of the pump industry.
From this, China’s pump industry in order to achieve sustainable development, expansion of enterprise scale is on the one hand, strengthen enterprise technology research and development and product development capability is the key. In other words, in the homogenization of the more serious at this stage, in order to maintain or stimulate the development of an industry must be to differentiate the competitive advantage to support, and “differentiated competitive advantage” is necessary to meet the current economic development needs But also to meet the target market demand, so as to achieve a sustainable development of China’s pump industry.
Lanshen Group production of submersible sewage pumps, submersible sewage pump is mounted in front of the base will be tightness tested to ensure that each sewage pump are qualified products.
Nanjing lanshen Pump Corp.LTD., founded in 1958,after 50 years of development, is now a registered capital of 50 million yuan, with assets exceeding 400 million yuan, accounting for area of 280 acres. China’s first submersible sewage pump and mixer in the birth and to fill the gap. Currently has a centrifugal pump, switch type electric control, water treatment equipment for mass production of special machines ability to produce its own sewage plant and pumping station for more than 70% of the equipment.
Lanshen Pump R & D and manufacture Submersible Sewage Pump ,sewage pump,axial pump,submersible sewage pump.
Submersible sewage pump because of the pump and motor shaft rotation, short, coaxial weight, so bearing parts of the radial load was relatively small, life than general pump is much longer. Don’t exist cavitation damage and irrigation water, etc. Especially after a operator has brought great convenience. Vibration noise, low temperature, motor of air pollution. In municipal engineering, industrial, building, hotel, hospital, water conservancy construction and other industries plays a very important role.
The key of submersible sewage pump is reliability problems, because of the use of sewage pump diving in liquid is under the situation, Transmission medium containing some solid materials is mixed liquid. Pump and motor on very near, pump for vertical layout, rotating components with impeller under water stress weight above. These problems are made in diving sewage pump seal, motor bearing capacity, bearing arrangement and the requirements of the selection of sewage pump than average.
In order to improve the life, submersible pumps manufacturer in the pump to protect system, namely in the pump leakage occurs, overload, overtemperature fault can make the automatic alarm, and automatic stop for repair. The submersible sewage pump set protection system is necessary, it can effectively protect the safe operation of pump.
Submersible sewage pump is provided which is adapted for location in a sump or the like, and which includes a motor case, a driving motor, an impeller case, and an impeller located in the impeller case, the impeller defining a back shroud space between its upper face and the confronting, superjacent portion of the impeller case.
The usual submersible pump is sealed against fluid entry for operation in a submerged condition, and is designed to be cooled by the liquid material within which it is submerged. Dangerous overheating can occur if such a pump is not operated in a submerged condition, and such overheating may result in burning or explosion of the motor.
The apparatus includes a vent which opens at one end into the back shroud space and at the other end opens to the exterior of the impeller case. Whenever air is drawn or injected into the low pressure vortex area of the sewage pump for controlling the amount of liquid discharged, the air collecting in the back shroud space is constantly vented to facilitate operation of the impeller and reprime the pump.
1.When lifting the device, absolute prohibition of lifting cable directly or use cable to lift other heavy objects.
2.The cable ends is strictly prohibited immersed in the liquid.
3.The housing of all equipment should be grounded to prevent electric shock.
4.The inner diameter of the outlet pipe should be consistent with the requirements (in principle, be smaller than the pump outlet diameter).
5.Submersible sewage pump can not be placed at the entrance. When the water pump on the floating sand or mud, due to vibration, the pump resulting in subsidence, in this case, we recommend that the pump is placed on a large plate.
6.Pumps used in the sewage, the case will accumulate around the mud, debris, etc., resulting in reduced heat transfer rate, rise in temperature inside the motor and shorten the life of the stator or cause undue tripping, so sewage pumping level after withdrawing to a minimum, clear debris (once a year) and, if necessary, open the cooling jacket fixed plate, clean-up and circulating water cooling jacket in the debris.
7.When the temperature drops below 0 ℃, if the pump is still functioning can continue to use, or should be lifted dry and ventilated place, and pay attention to antifreeze.
China is a country which with severe water shortage, water resources per capita is only 2300m³, about 1/4 of the world average, is one of the world’s 13 water-poor countries. Water resources in China has the following characteristics: the regional imbalances in the distribution of water, the amount of water in the process when the distribution is very uneven, incompatible combination of land and water resources.
With the rapid economic growth, urbanization continued to improve, widespread pollution of surface water, especially organic pollution of river flowing through the city is very serious, leading to the lake nutrition issues outstanding; groundwater source and point source pollution, coastal sea worsening water pollution; lack of water conflicts has been very sharp, resulting in huge economic losses, affecting the sustainable development of regional social economy.
Nanjing lanshen Pump Corp.LTD.manufactures submersible sewage pump, sewage pump, axial pump, and has made great contributions in the water pollution control industry.