During the use of the magnetic drive pump, some users responded that the magnetic steel was demagnetized, resulting in the pump unable to operate normally. Therefore, it is considered to be the quality problem of the magnetic steel delivered by the company. However, after many after-sales analysis, we found that users had some problems in the early design or later use, resulting in demagnetization of magnetic steel. Therefore, in order to reduce the use cost of users and avoid unnecessary losses, let's talk about several major reasons for demagnetization of magnetic steel today. 1. The use temperature is unreasonable. The temperature of the material conveyed by the pump is too high, exceeding the allowable service temperature of the magnetic material. For example, for the pump with Nd-Fe-B magnetic steel, the service temperature should be less than 150 ℃. If the system temperature exceeds 150 ℃, the magnetic steel will be demagnetized soon. 2. Long time low lift operation. For example, if the flow at the rated point is 25 m3 / h and the head is 50 m, if it deviates from the rated point (for example, the head is only more than 10 meters), the return pressure inside the pump will drop, the circulation will be blocked, the eddy current belt of the metal isolation sleeve will not go, its temperature will rise sharply, and the magnetic steel will demagnetize. 3. Pipeline matching is unreasonable. For example, DN65 pipeline is required at the inlet. If the pipeline is less than 65mm, the flow will be in short supply, which will easily lead to poor internal circulation, heat is not easy to be taken away, and the system temperature exceeds the service temperature of magnetic steel. 4. The sliding bearing is worn and not replaced in time. If it is not replaced in time, there will be friction between the inner magnetic rotor and the inner wall of the isolation sleeve, resulting in the temperature rise of the isolation sleeve and demagnetization of the magnetic steel. 5. The magnetic pump runs idly. In this case, the temperature of the metal isolation sleeve and the inner magnetic rotor rises sharply, exceeding the service temperature of the magnetic steel, which will soon lead to demagnetization of the magnetic steel of the inner magnetic rotor. 6. The inlet and outlet pipelines of the pump are blocked. In this case, the magnetic pump idles, or the internal circulation of the pump is affected and the temperature rises; Moreover, the blockage of the outlet pipeline will also demagnetize the magnetic steel because the internal circulation of the pump cannot be carried out. If the pump inlet pipeline is equipped with a filter, the filter shall be cleaned regularly to ensure that the filtering area is within a reasonable range. 7. Abnormal jamming of rotor parts. The rotor component composed of internal magnet and impeller is stuck by mechanical impurities and cannot run, but the motor does not stop in time, which will lead to demagnetization of magnetic steel. 8. Cavitation. Cavitation of the pump due to various reasons will cause demagnetization of the magnetic steel. Does the molecular pumps can be treated with anti-corrosion?Like nickel plating?

Generally speaking, the water ring vacuum pump in normal operation will not have any problems, but this is not allowed. Sometimes, the pump in normal operation will suddenly stop running, and this situation is not caused for no reason. There are still many reasons: 1. The power failure may also be the reason why the water ring vacuum pump suddenly does not run. First check its power supply to see if it is powered off, eliminate the fault in time and restore the power supply. 2. The reason why the water ring vacuum pump suddenly does not run may be that the control protection switch of the vacuum pump trips. The main reason for the control protection switch tripping is that the vacuum pump is damaged during operation or due to overload of the vacuum pump motor. The treatment method for the sudden non rotation of the vacuum pump is to measure the insulation resistance of the vacuum pump motor first, and check whether the stator winding of the vacuum pump motor is damaged and whether other parts are damaged. 3. The broken core wire of the power supply cable of the water ring vacuum pump may also be the reason for the sudden non rotation of the vacuum pump. The treatment method for the sudden non rotation of the vacuum pump is to connect the broken core wire of the motor power supply cable and wrap it with insulating tape. If the connection repaired after the power supply cable is broken needs to be immersed in water, the cable shall be treated or replaced according to the waterproof connection and sealing requirements of the cable joint. 4. The action of the thermal protector of the water ring vacuum pump may also be the reason for the sudden non rotation of the vacuum pump: the main reason for the action of the thermal protector of the vacuum pump is the overload of the vacuum pump or the poor heat dissipation or dehydration operation of the vacuum pump motor; Or it is caused by malfunction of thermal protector. The treatment method is to check the cause of the action of the thermal protector and eliminate it, waiting for its automatic reset or repair and adjustment. 5. The stator winding of the water ring vacuum pump is burnt out, which may also be the cause of the sudden non rotation of the vacuum pump. If it is found that the stator winding of the vacuum pump is burnt out, first check the cause of the damage of the stator winding and eliminate the fault to prevent the motor stator winding from being damaged again; Then disassemble and repair the motor stator winding and replace the damaged stator winding as required. 7. There may also be the reason why the motor is burnt out due to water ingress caused by medium corrosion. The liquid is corrosive. It is recommended to use stainless steel. Therefore, once the water ring vacuum pump used by everyone has such a situation, what to do is always careful and careful inspection. The inspection results determine which way we will choose to deal with it, so that we can continue to use the vacuum pump. LGB220 Dry screw vacuum pump Used In Chemical plant In Thailand

In the process of expanding the development advantages of enterprise productivity, we should constantly improve the advantages of the actual performance of dry vacuum pump products and speed up its application effect. The overall driving force of its product application and practical ability is to continuously improve the overall development of its product strength, and improve the application efficiency of the equipment through comprehensive driving product advantages. Therefore, its performance capability in all aspects is continuously improved, and its practical advantages are brought into full play, so as to enhance the embodiment of its product strength and further improve the comprehensive performance of its products Improve product application and performance advantages. Give full play to the quality and strength of dry vacuum pump, accelerate the embodiment of its product performance and superior ability, and use advanced equipment to expand the development of enterprise productivity. Continuously display and expand the practicability and quality strength of products, improve their overall application value strength with efficient product utilization effect, so as to improve the superiority of product strength with reliable quality and effectiveness, and fully improve the quality strength of product use and sustainable development. In order to speed up the development of enterprises and improve the performance of dry vacuum pumps, we should speed up the application and practice of products with various advantages. The improvement of performance advantage level promotes the overall improvement of enterprise quality and strength, and enhances the quality and performance of enterprises through reliable strength utilization. Now, you can see that there are so many different designs of dry vacuum pumps, each with its own characteristics, advantages and disadvantages. Application cost has always been an important factor affecting people's selection of vacuum pump. More and more vacuum pump users realize that the stability of vacuum pump should also be taken into account. Due to the accidental wrong solution of the vacuum pump, the application efficiency of the machine is reduced, which affects the production and delivery of wafers, and even the processing damage of wafer waste and other parts. Because the screw design adopts single-stage design, the number of parts used can be reduced by up to 60% compared with multi-stage pumps (such as ball joint, claw and combination). This is a great advantage for stability and future protection costs. In general, if the user thinks that power consumption is very important to him, selecting an internal compression screw may be a good choice, and the nitrogen content is not important to him. However, in general, the requirements for tail gas treatment are becoming more and more stringent, so it is particularly important to reduce the amount of nitrogen used in the future. If you want to handle a wide range of semiconductor processes without changing them with a simple inventory control pump, external compression screws are a good choice. Vacuum Pump Heat Treatment Guide,Heat Treatment Equipment Liquid Ring Vacuum Pump