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06/30/2021

Precautions for water pump maintenance

First, the water pipeline must ensure a high degree of sealing, and check whether the connection between the water pump and the water pipeline is loose. Second, add bearing lubricating oil to the bearing body to observe that the oil level should be at the center line of the oil mark, and the lubricating oil should be replaced or replenished in time. After 500 hours of operation of the oil-immersed water pump, the sealed oil must be replaced once. The oil in the water pump motor cavity should also be replaced once a year. Fourth, close the gate valve, outlet pressure gauge and inlet vacuum gauge of the outlet pipe of the water pump. Fifth, start the water pump motor, and try to see if the rotation direction of the water pump motor is correct. Start the water pump motor, when the water pump is running normally, open the outlet pressure gauge, if the pressure is suitable, gradually open the gate valve, and check whether the water pump motor is under load. Sixth, try to control the flow and head of the water pump within the specified range to ensure that the water pump runs at the highest efficiency point in order to obtain the greatest energy-saving effect. Seventh, during the operation of the pump, the bearing temperature should not exceed the ambient temperature of 35C, and the maximum temperature should not exceed 80C. Eighth, if there is any abnormal sound from the water pump, stop and check the cause immediately. Before stopping the water pump, the gate valve and pressure gauge must be closed before stopping the water pump motor. Ninth, adjust the packing gland frequently to ensure that the leakage in the packing chamber is normal. Tenth, check the wear of the water pump shaft sleeve regularly, and replace it in time when the wear is large. Eleventh. If the water pump is out of service for a long time, it is necessary to disassemble the water pump completely, wipe off the water, apply grease to the rotating parts and joints, and store them properly. Twelfth, the mechanical seal lubrication should be clean and free of solid particles. It is strictly forbidden for the mechanical seal to work under dry grinding conditions. Thirteenth, the water pump motor should be turned several times before starting, so as to avoid sudden start and cause the sealing ring to break and damage. Fourteenth, the pump cannot be operated for a long time under the cavitation state. Be sure to prevent the water pump from rusting: when the water pump is not in use, it should be wiped clean and placed in a ventilated and dry place. If the surface of the electric water pump is damaged and peeled off, the rust should be removed in time, and anti-rust paint should be applied to protect it. Fifteenth, it is forbidden to run the water pump motor over current for a long time when the water pump is running at a flow rate. When checking the operation of the water pump regularly, the motor of the water pump runs for a long time with overcurrent. Sixteenth, the water pump should be supervised by a special person during operation to avoid accidents. Seventeenth, the bearing should be refueled every 500 hours of operation of the water pump. The water pump motor power is greater than 11KW and equipped with a refueling device, which can be directly injected with a high-pressure oil gun to ensure excellent bearing lubrication. Eighteenth. After the water pump has been running for a long time, if the noise and vibration of the unit increase due to mechanical wear, the unit should be stopped for inspection, and the vulnerable parts and bearings can be replaced if necessary. Nineteenth, do a good job of comprehensive maintenance. Generally every two years of use, the water pump must be comprehensively maintained. For the worn parts and the parts with poor sealing performance, repairs that can be repaired, and those that cannot be repaired must be replaced completely. Do not use reluctantly. So as not to bring serious consequences. Generally, the above nineteen points should be done well when using the water pump, which can greatly increase the service life of the water pump and also bring us more convenience.
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Precautions for water pump maintenance
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06/30/2021

What is the function of the fire pump? How many types are there

Fire pumps are used to pump all kinds of liquids. They are ideal pumps and fire-fighting systems for creating non-leakage, non-polluting civilized workshops and civilized factories. They are often installed on fire trucks, fixed fire-extinguishing systems or other fire-fighting facilities for transportation. A special pump for liquid fire extinguishing agents such as water or foam solution. Fire pumps are widely used in environmental protection, water treatment, fire protection and other departments. Classification of fire pumps: 1. Divided by purpose: It can be divided into unpowered fire pump (relying on the rotation of the impeller to transfer energy to the liquid without a power source); vehicle fire pump (installed on the chassis of the fire truck); marine fire pump (installed on ships, offshore working platforms, and water Working environment); engineering fire pumps (used for fire hydrant systems, water sprinkler fire extinguishing systems, foam fire extinguishing systems and other engineering sites), etc. 2. Divided by composition: Can be divided into fire pumps (consisting of a set of fire pumps, power sources, control cabinets and auxiliary devices); water supply fire pumps; stabilized fire pumps; deep well fire pumps; submersible fire pumps; ordinary fire pumps and Hand-carried motorized fire pump set (a fire pump set that can be carried by hand and assembled with a light engine), etc.
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What is the function of the fire pump? How many types are there
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