After long-term use, the vacuum pump sometimes heats up.What is the reason for this?How does the heating of the vacuum pump affect production?
XNUMX. Causes of fever
1. The circulating water volume of the imported vacuum pump is too small.Circulating water has two purposes.One is the cooling vacuum pump.The other is that water forms a water ring in the pump cavity when the impeller rotates.When the impeller rotates, the air is in the water ring.Internal compressed air.
2. The temperature of the inhaled gas is higher, and the vacuum degree of the circulating water is lower than 30 degrees.After XNUMX hours of continuous operation, the vacuum pump is like a kettle, which can boil water at home.Scale is generated in the pump.After the impeller is difficult to run, friction increases and heat is generated.
XNUMX. Elimination method
1. Remove the motor shield to determine whether the fan wing of the rotating motor is running flexibly, and the flexible rotation indicates that there is no scale.If the operation is difficult, please disassemble the exhaust pipe of the pump and check whether there is scale inside with a hand lamp.The generation of scale will cause difficulty in the operation of the impeller and burn the motor.The spring of the mechanical seal may also be locked on the shaft due to fouling.After the end face is worn, the end face cannot be automatically provided, which causes water leakage at the mechanical seal and burns the motor.
2. The vacuum pump is a suction pump and only allows a small amount of liquid.If the inhaled material contains a lot of water, a buffer tank should be installed in front.Inhaling large amounts of water will damage the impeller.
3. The temperature of the gas sucked by the imported vacuum pump is relatively high.Use tap water as circulating water, or use a condenser to cool the gas.
Note: The vacuum pump needs to be equipped with an overload protector to prevent overloading the motor from burning.The connecting pipe cannot be thinned by 70%.If the pipe is too thin and the drainage is not smooth, it will cause the motor to heat up and overcurrent.
Usually, when we use imported vacuum pumps, Yazhi Leide Electromechanical Technology Co., Ltd. suggests that we should find a solution based on these points and correct the operation in future use.
In order to ensure the operation of the imported vacuum pump, the following steps must be strictly followed when using the vacuum pump.
(1) Preparations before starting the pump
① Check carefully whether the connection between each part is good.
②Open the water inlet valve of the water tank and add water to the specified water level; open the suction valve and exhaust valve of the vacuum pump.
③Close the water inlet valve and drain valve of the vacuum tank.
(2) When it is ready to start the pump, start the pump.When the vacuum tank reaches the vacuum degree, the pumping valve can be opened, and the centrifugal pump can be pumped to drain the oil.When the tanker is pumping bottom oil, the operation of the vacuum pump is the same as that of the centrifugal pump.
(3) Operation and maintenance of the pump During the operation of the pump, the pump operator should strictly guard the post, concentrate on, observe carefully, and do the following:
①Listen to the sound of pump and motor.is normal;
②Check the vacuum degree, the liquid level of the vacuum tank, the circulating water in the water tank, and whether the bearing lubrication is normal;
③Touch and check whether the temperature of the bearing and motor is normal.
(4) Stop the pump
①Close the suction valve first, then open the water inlet valve of the vacuum box, and then stop the water inlet vacuum pump.
② Vent the vacuum box and close the relevant valve.
