Pump operation, the focus is to check the following aspects: First, the bearing work is normal 1, the oil temperature: Do not exceed 60 ℃. 2, the oil level: no oil ring rolling bearings, oil surface should not be less than the center of the ball; oil ring bearings, oil surface should be buried one-fifth of oil ring diameter. In order to monitor the oil level, the bearing is equipped with an oil gauge or oil gauge. 3, oil quality: water can not enter the impurities, can not be emulsified or black. 4, whether abnormal noise: especially the rolling bearings, damage usually appear abnormal sound. Second, the vacuum gauge, pressure gauge, ammeter reading is normal 1, vacuum gauge pointer can not swing too large, such as swing too large may be the entrance of the vaporization. In addition the vacuum gauge readings can not be too high, too high may be blocking the entrance door stuck, or the entrance door flap off, reduce the water level in the suction basin. 2, the pressure gauge reading is too low, the pump may be poor working parts, sealing rings and other serious wear and tear. In addition, when the system water demand is large, the pump outlet pressure will also be reduced. 3, ammeter reading is too large, may be a large amount of water supply, the pump friction and so on. If the ammeter reading is too small, indicating that the pump has fallen into the water or the outside world does not need so much water. Third, the pump vibration whether the vibration amplitude of the pump is generally not more than 0.08 mm. Vibration reasons: 1, the center of the pump and motor is not correct. 2, pump or motor ground screw loose, or the foundation is not solid. 3, bearing cap tight enough. So that the bearing appeared in the body beating. 4, the rotor quality is not balanced. 5, volute pump, especially some high-lift volute pump, in the small flow, there will be varying degrees of vibration, it is because the rotor radial force at this time. When the outlet valve is opened to a certain extent, the vibration disappears. Fourth, packing work is normal 1, should be able to drip a little, do not be too tight, otherwise it will fever and smoke. But too loose will leak a lot, easy to flee into the bearing oil emulsification. 2, should be replaced regularly packing, hard hair can not afford the role of shaft seal. Soaking a long time will fill the tank rot.
Nails
A nail is a sharp-pointed hard metal (usually steel) used to hold things such as wood. Hammers drive nails into objects, and recently there have been electric nail guns, gas nail guns. Nails are able to stabilize objects by their own deformation and hang on to them, and by friction. Nails are one of the most common things in decorating. Nails made of iron are also called nails, nails made of steel are also called nails.
In engineering, carpentry, and architecture, nail refers to the sharp, pointed, hard metal (usually steel) used to hold things like wood in place. The Hammer drove the nails into the objects, and there were electric nail guns, gas nail guns. Nails therefore stabilize objects by their own deformation and hang on to them, and by friction. Nails vary in shape due to their many uses. The most common nails are called [Wire nails". Other common nail names include pins, thumbtacks, or quills. Nails use a wide range of scenarios, the general aircraft carrier with the price of rivets more expensive, the price of ordinary nails cheaper
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