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yibocommunal
Apr 01, 2022
In General Discussions
Products made of stainless steel have gradually entered industrial applications because of their long service life, not easy to rust, and green environmental protection. Stainless steel pipeline pumps are among the best. The stainless steel pipeline pump included in the stainless steel pipeline pump has been widely used in the market in recent years, and is loved by the majority of users because of its corrosion resistance, long service life, light weight, safety and hygiene. Moreover, the cost of construction is comparable to that of ordinary sewage pumps, because the price of its brown metal has continued to increase over the years, and the price is almost the same. The used stainless steel material is a green and environmentally friendly material, which can be recycled 100%, so in recent years, it has become a leader in stainless steel high temperature and corrosion resistant submersible pumps. Especially in recent years, countries in the food industry have put forward higher requirements. Stainless steel materials have gradually entered the stage of history because of their safety and hygiene. For rigid requirements, stainless steel pump products represented by stainless steel submersible pumps have begun to shine in food products. With the sharp increase in the market, the stainless steel pipeline pump industry is facing new technological innovations. Various companies are also competing to launch their own killers, constantly improve their R&D teams, and study related core production technologies, so as to improve their competitiveness in the market. Pump products represented by stainless steel pipeline pumps are leading the entire pump industry to move forward, and the raw material market driven by this, new stainless steel materials continue to come out. Various patented technologies and the continuous improvement of specifications are constantly driving the entire industry chain to a higher and more orderly goal. At the same time, it is also expected that pump products led by stainless steel sewage pumps will go abroad and become more popular in the world. Play the pride of Made in China on the big stage. 2BE3 Series Liquid Ring Vacuum Pump
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yibocommunal
Mar 25, 2022
In General Discussions
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?
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yibocommunal
Mar 24, 2022
In General Discussions
Submersible pump is an important equipment for water extraction in deep wells. When in use, the whole unit works in the water and extracts the groundwater to the surface. It is used for domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship load regulation, and fountain landscape. Hot water submersible pump is used for bathing in hot springs. It can also be used to extract groundwater from deep wells. It can also be used in water lifting projects such as rivers, reservoirs and canals. It is mainly used for farmland irrigation and human and livestock water in alpine areas. It can also be used for central air conditioning cooling, heat pump unit, cold pump unit, city, factory, railway, mine and construction site drainage. The general flow can reach 5 ~ 650m3 / h and the lift can reach 10-550m. Submersible pumps often burn out motor windings due to lack of water in the pool. In view of this situation, we have sorted out several protection measures for submersible pump today: water shortage protection, motor water leakage protection, oil chamber water leakage protection, insulation resistance protection, winding overheating protection, bearing overheating protection, etc. 1. Abnormal power supply voltage is prohibited Because the low-voltage power supply line is relatively long, it is common that the terminal voltage of the line is too low. When the phase voltage is lower than 198 V and the line voltage is lower than 342 V, the speed of the submersible pump motor decreases. When it does not reach 70% of the rated speed, the starting centrifugal switch will be closed, causing the starting winding to be energized for a long time, heating and even burning the winding and capacitor. On the contrary, too high voltage causes the motor to overheat and burn out the winding. Therefore, during the operation of submersible pump, the operator must observe the power supply voltage at any time. If it is less than 10% lower than the rated voltage and more than 10% higher than the rated voltage, stop the motor, find out the cause and eliminate the fault. 2. Confirm the correct rotation direction of the motor The rotation direction of the motor should be clarified. Now there are many types of high head submersible pumps that can discharge water during forward rotation and reverse rotation, but the water output is small and the current is large during reverse rotation. If the reverse time is long, the motor winding will be damaged. 3. Insulation resistance requirements for cable installation and submersible pump When installing the submersible pump, the cable should be overhead and the power line should not be too long. Do not force the cable when the submersible pump is launched or raised, so as to avoid breaking the power line. Do not sink into the mud when the submersible pump is working, otherwise it will cause poor heat dissipation of the motor and burn out the motor winding. During installation, the insulation resistance of the motor shall not be less than 0.5 megohm. 4. Avoid frequent switching Do not switch on and off the submersible pump frequently, because the backflow will occur when the electric pump stops running. If it is started immediately, the motor load will start, resulting in excessive starting current and burning out the winding. Due to the large current during startup, frequent startup will also burn out the motor winding of submersible pump. Vacuum pump used in Milking industry
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yibocommunal
Sep 03, 2021
In General Discussions
Have you understood the barrier treatment setting of vacuum unit? Many people may not know what the vacuum unit is used for, so today I will tell you in detail how to set the barrier treatment of the vacuum unit, hoping to help you. 1. First of all, we should see if our homework is normal; Whether the vacuum system of the vacuum unit has leakage points, and check whether the vacuum system pipeline and the continuous vent pipeline of the low-pressure heater are damaged, whether the vacuum damage valve is tightly blocked, whether the sealing water is normal, and whether the steam supply pressure of the shaft seal is normal; 2. Check whether the shaft seal steam inlet valve, diverter valve and load relief valve are normal, whether the shaft water seal is normal, whether the shaft heater fan is defective or the shaft heater negative pressure is low, start the standby fan, check whether the small turbine exhaust system is normal, start the electric pump, stop the small turbine and block the exhaust butterfly valve if necessary; 3. Check whether the sealing water of the vacuum unit is normal and whether the condensate pump is empty; 4. Whether the water level of condenser is too high; 5. When the condenser vacuum drops to - 87kpa, the standby vacuum pump will start automatically, otherwise it will be put into operation manually. If the vacuum continues to drop, the load shall be reduced at the end; The vacuum of the vacuum unit drops to - 84kpa and the load is reduced to zero; 6. If the vacuum drops to - 81kpa, measures shall be taken for tripping maintenance, otherwise, switch off and shut down manually. Through the introduction of the knowledge of vacuum unit barrier treatment, it can be seen that most of the barrier treatment is due to the abnormal operation of the unit, so we should check one by one according to the above introduction, find out the problem and solve it according to the correct method, so as to effectively reduce the loss. Vacuum Pump Heat Treatment Guide,Heat Treatment Equipment Liquid Ring Vacuum Pump
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