Maintenance and usage of circulating water vacuum pump

With the continuous development of heavy industry, circulating water vacuum pump has been widely used in many industries such as petroleum, chemical industry, machinery, mining, light industry, medicine and food The limit vacuum obtained by this method is 2000-4000 PA, and the series atmospheric ejector can reach 270-670 PA The water ring pump can also be used as a compressor, which is called water ring compressor It belongs to low-pressure compressor, and its pressure range is 1-2x105 PA gauge pressure Now let's introduce the maintenance and use methods of the circulating water vacuum pump, let's learn together! Maintenance of circulating water vacuum pump: first, if the vacuum is not removed, it should be judged whether the container is leaking or the hose is loose In case of pump problems, check whether the water inlet or air channels are blocked or loose 2、 Keeping water quality clean is the key to long-term stable operation of the equipment The water tank must be changed and cleaned regularly Do not pump dust and solid matter 3、 If the motor does not run, check the power supply or fuse Some corrosive gases can cause the water quality in the water tank to become poor, generate bubbles, and affect the vacuum degree, so it is necessary to pay attention to the continuous circulation of water change 4、 For special strong corrosive gas, it is necessary to carefully judge whether it reacts with the materials used in the equipment and use it carefully Usage of circulating water vacuum pump: 1 Each suction nozzle of the machine has a one-way check valve For the sake of safety, more effective measures should be taken to prevent the water and sewage in the pump from flowing back into the pumped container when the pump stops working Cut off the skin tube between the vacuum pump and the container to be pumped; stop working and the vacuum in the container to be pumped will be discharged 2 Connect the power plug, turn on the start switch, and the pump starts to work 3 Plug the suction nozzle with fingers, and the corresponding vacuum gauge can reach a vacuum degree close to - 0.1MPa, indicating that the pump works normally IV open the upper cover of the water tank and fill in clean cold water The water level shall be slightly lower than the overflow nozzle 5 The limit vacuum degree of circulating water vacuum pump is limited by the saturated steam pressure of water For a long time, the increase of water temperature will affect the vacuum degree At this time, the drain port (lower port) at the back of the equipment can be connected with the tap water Overflow (upper) drainage Proper flow control can keep the water temperature in the water tank from rising and the vacuum degree stable Because the gas compression in the water ring pump is isothermal, it can pump out inflammable and explosive gas, in addition, it can also pump out the gas containing dust and water Therefore, the water ring pump is increasingly used in the three-dimensional image pump body of the circulating water pump, which contains a proper amount of water as the working fluid When the impeller rotates clockwise as shown in the figure, the water is thrown around by the impeller Due to the centrifugal force, the water forms a closed ring of approximately equal thickness, which is determined by the shape of the pump cavity The inner surface of the lower part of the water ring is just tangent to the impeller hub, and the inner surface of the upper part of the water ring is just at the top of the blade (in fact, the blade has a certain insertion depth in the water ring) At this time, a crescent space is formed between the impeller hub and the water ring, and this space is divided into several small cavities equal to the number of blades by the impeller If the starting point is zero at the lower part of the impeller, when the impeller is 180 degrees before rotation, the area of the small cavity becomes larger from small to large, and is connected with the suction port on the end face, at this time, the gas is inhaled, and when the suction is finished, the small cavity is isolated with the suction port; when the impeller continues to rotate, the small cavity becomes smaller from large to small, so that the gas is compressed; when the small cavity is connected with the exhaust port, the gas is discharged out of the pump.