Lubrication and maintenance method of water ring vacuum pump

 

1. Lubricating water ring vacuum pump Since the vacuum pump and motor are integrated, only the motor bearings need to be lubricated. Under normal operating conditions (50Hz), motor bearings with class B insulation must be cleaned and added after about 8000 hours or a year. 2. Maintenance of water ring vacuum pump (1) Regularly check whether the bolts are loose, whether the air pipe leaks, whether the packing seal is fastened, whether the packing seal leaks, and whether the rotating parts have friction sound or other noise. If so, stop or repair or replace parts. (2) There shall be no sand or debris in the water. (3) If hard water is used as the working fluid, the water must be softened or the pump must be washed with solvent frequently. It is usually immersed in 10% oxalic acid for 30 minutes or in detergent used in industrial boilers for 30 minutes to remove calcium carbonate. (4) If the pump is not used for more than two weeks, drain the water in the pump, fill the suction port of the pump with 0.5L antirust agent or engine oil, and gently push the pump for less than 1s. (5) If the water ring vacuum pump is used where it may freeze at low temperature, antifreeze and corrosion-resistant working fluid, such as mineral oil, shall be used. Drain the water in the pump chamber after each use. (6) If the water ring vacuum pump does not work for a long time, drain the water in the pump and add anti rust liquid to protect the pump.

water ring vacuum pump is used for reclaiming farmland from water

Vacuum sealing wax in vacuum sealing

 

It is used as a seal at removable and immovable joints or to fill small holes in vacuum systems. The joints do not need to be polished. Its hardness and viscosity are higher than vacuum sealing grease. Vacuum sealing wax can be divided into two types: 1. Vacuum sludge. It is a kind of plastic putty made by mechanically mixing refined petroleum grease with high viscosity and low vapor pressure and mountain surplus soil. The characteristics are: good plasticity and easy to form; At the same time, the plasticity changes little with temperature, has good adhesion to metal and glass, and is not easy to be monotonous when exposed to air. It is a black mud like homogeneous body, and the saturated vapor pressure is no more than 10-3. Toto. The application temperature range should not exceed 30 ℃ to avoid softening and deformation. It is used for temporary blocking of parts in the vacuum system that are slightly vibrated and often need to be disassembled, or suspicious air leakage areas found in the system. It is especially suitable for sealing glass pipes without grinding. But it can only be used in low vacuum parts. 2. Vacuum wax: it is made of petroleum residue oil with low vapor pressure and high asphalt content after proper treatment. The characteristics are: in addition to the low saturated vapor pressure and good adhesion to glass and metal, the shrinkage force is small, and the brittleness and non cracking will not change when the temperature changes greatly. It is used for permanent sealing at the grinding joint of metal pipeline in vacuum system and blocking sand holes or loopholes on glass instruments. Its saturated vapor pressure (at 20 ℃) is generally lower than 10-6 Torr, which can be used in high vacuum part. stay Try to make it condense or soften when using, but the temperature should not be too high. It must not be directly baked and heated with open fire. The heating temperature is below 100 ℃. There are 20 #, 50 #, 80 #, and the viscosity of 80 # is the largest.

Water ring vacuum pump and water ring compressor for flue gas recovery

What is the ambient temperature of the vacuum pump

 

What is the ambient temperature of the vacuum pump? Too high or too low temperature will affect the operation of the equipment and affect many operations of the equipment. Therefore, users should learn to adjust the temperature and always keep the equipment above a good temperature. So what is the appropriate ambient temperature to use it? 1. Gas analysis and partial pressure measurement under vacuum conditions are usually completed by dynamic mass spectrometer. If the medium to be transported contains solid particles, a filter screen shall be added at the pump inlet; If ferromagnetic particles are contained, a magnetic filter shall be added. 2. The ambient temperature of the vacuum pump in use shall be lower than 40, and the temperature rise of the motor shall not exceed 75. After 1000 hours of normal operation of the magnetic pump, remove the bearing and end face moving ring, check the wear, and replace the vulnerable parts that cannot be reused. For the medium easy to precipitate and crystallize, clean the conveying liquid immediately after use and discharge the liquid accumulated in the pump. The vacuum pump must always be clean. No other articles shall be placed on the vacuum pump, and the channels around the pump shall not be blocked. Always pay attention to the tightness of the V-belt and adjust it. Always pay attention to whether each pipe joint leaks and whether the pre vacuum in the box is reduced, otherwise it needs to be repaired in time; Always pay attention to whether the cooling water is unblocked. Start intermittently 4-6 times within 2S each time to overcome the large torque during startup. Here, we need to know the ambient temperature of the vacuum pump, and we must measure whether the ambient temperature meets the corresponding normal range before formal use. In addition to keeping the vacuum pump at a good temperature, we must also do a good job in heat dissipation.

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How to prolong the service life and maintain the high temperature oil pump?

 

High temperature oil pump is an ideal hot oil circulating pump or heat carrier transfer pump. It is an ideal matching pump for heat exchange equipment. The hot oil pump has reasonable structure, excellent performance and reliable use. It is suitable for conveying high-temperature liquid without solid particles. High temperature oil pump is a general mechanical equipment with a wide range of uses. It is widely used in petroleum, chemical industry, metallurgy, mining, shipbuilding, electric power, agriculture, national defense, national defense and other departments, and plays an important role in the national economy. 1. Measures to improve the service life of high temperature oil pump: (1) The disassembly, cleaning, temperature rise, cooling, start and stop of high-temperature oil pump shall be operated in strict accordance with the regulations to avoid undue losses. The data show that by reducing the temperature in the bearing area, the bearing capacity of the bearing can be greatly increased. There is no need to replace the high-capacity pump. Only by increasing the speed, the output capacity of the gear pump can be increased by 50%. When the back pressure decreases, the pressure of the stuffing box shall be adjusted in time, otherwise the pump will suck in air and the slag oil pump, resulting in the broken strip of the casting strip, affecting the pelletizing and causing the discharge of the pelletizer. (2) The temperature of the heat medium jacket shall be checked frequently, and the heat medium temperature of the main body and the front and rear covers shall be consistent. The outlet pressure measuring point of CQBG high temperature magnetic pump shall be set with interlocking stop alarm, otherwise, once the discharge pipeline is blocked, the pump body is easy to be damaged. When cleaning the liquid transfer, do not use the pump to deliver the cleaning liquid. Remove the internals and install them after the liquid transfer to avoid mixing foreign matters in the pump. (3) When the output increases each time, the output, speed, inlet and outlet pressure and current value at that time shall be recorded, and the data before and after shall be compared and carefully analyzed, so as to find abnormalities as soon as possible and deal with them in time 2. Daily maintenance and operation management of high temperature oil pump: (1) Since the high-temperature oil pump body operates at high temperature, hinged support shall be set on the piping during cold installation to prevent piping displacement after temperature rise. (2) In case of power failure or interruption of heat medium circulation for more than 3omin, the pump shall be disassembled, cleaned and reassembled to avoid damage to the high-temperature pump due to poor bearing lubrication caused by melt solidification and cracking. (3) The melt filter behind the outlet of the high-temperature oil pump shall be replaced regularly and shall not operate under high pressure or even the upper pressure limit for a long time. (4) Precautions when starting the high temperature oil pump. When there is no pressure at the outlet, do not increase the speed blindly to prevent premature damage of the shaft or bearing. (5) The coupling must be thermally aligned after the pump body is heated to avoid additional torque during operation (6) . regular replacement of bearings can save maintenance costs. 3 for the packing shaft seal pump with negative pressure, the pressure at the stuffing box shall be kept higher than the external atmospheric pressure. Because the melt viscosity is a decreasing function of the shear rate, the extrusion of the gear and the shear of the bearing will increase the melt temperature by 3 ~ 5 ℃ after passing through the pump, and reducing the heat medium temperature can prevent melt degradation. (7) Speed up shall be carried out slowly, and the front and rear pressure shall not rise sharply, so as not to damage the bearing or block the lubrication channel with melt. When it is found that the wear on the inner surface of the shaft or bearing is close to the thickness of the hardened layer, the shaft can be polished and reused, and only the bearing can be replaced, which can prolong the service life of the pump shaft by 8 ~ 10 years. (8) The temperature of the heat medium jacket of the pump body can be slightly lower than that of the front and rear jacket. (9) The outlet pressure measuring point of high-temperature pump shall be set with interlocking stop alarm, otherwise, once the discharge pipeline is blocked, it is easy to cause damage to the pump body. (10) When cleaning the liquid transfer, do not use the pump to deliver the cleaning liquid. Remove the internals and install them after the liquid transfer to prevent foreign matters from mixing in the pump.

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Repair of fixed piece mechanical vacuum pump

 

The structure of the stator pump is all combined, which is similar to the small five. The exhaust valve is of the marble type, and the marble will fly off after being used for a long time; Due to the manufacturing shortcomings of some pumps, the * * * hole is too inclined, the marble cannot return to its original position after being lifted by the air flow, and the valve port cannot be blocked, so the vacuum degree is not high. When repairing, the * * * hole can be reamed and driven into the insert sleeve to correct the * * * hole, which can overcome the above shortcomings. After several years of operation of the fixed piece pump, the vacuum becomes worse due to wear. At this time, the components can be disassembled and ground against each other. After cleaning, the assembly sister can be installed. At this time, assuming that the service between the rotor and the end face is too small, the end face can be ground off and then installed. The fixed piece is tensioned by the tension spring to make it close to the rotor to prevent the reverse "breaking" of gas. Therefore, the tension spring has a large expansion frequency and is easy to break. If one of the two tension springs is broken, the beating sound of the exhaust valve is paroxysmal, and the oil tank cover can be removed for inspection. In winter, the viscosity of oil sometimes becomes very large. After stopping the pump, air is not put into the pump chamber in time, resulting in oil filling the pump chamber. When the pump is started suddenly, it is difficult to squeeze out the oil in the cavity. The stator is often squeezed out of the stator slot or the rotor is broken (or even the rotor is cracked), so it is impossible to pump air. When repairing, only the fixed piece escapes. The tail end of the fixed piece can be gently knocked with wood to make it return to the original position, and the belt pulley can be turned by hand. After the pump oil in the cavity is discharged, the pump can be started for air extraction. If the rotor is damaged, it shall be replaced with a new one. Therefore, it is necessary to abide by certain regulations for the start and normal operation of the fixed film pump, and the oil change criteria should be regulated on schedule.

JZP2H600-4 Roots-piston vacuum Unit Used In Food Vacuum tank transportation

Water ring vacuum pump helps you choose the most suitable motor

 

Water ring vacuum pump, in the motor matching, we are corresponding matching! In the motor industry, Nanyang explosion-proof Group Co., Ltd. and Jiamusi Motor Co., Ltd. are the biggest brands. The motor matched with fozhen is basically Wannan motor. Haishengda Road Materials Co., Ltd. purchased 2be1303a water ring vacuum unit, and Nanyang motor was selected by the company. However, due to the motor problem, the production time was delayed again. Why do many enterprises choose EVP? Why do many enterprises choose EVP water ring vacuum pump many times? There is a saying: there is a priority in hearing about Taoism, and there is a specialty in art. Whether it is the choice of water ring vacuum pump or motor, we will not choose blindly. For each customer of each industry, match the water ring vacuum pump belonging to their own enterprise, so as to make the effect reach the acme. Best selling 2be water ring vacuum pump Many people are asking fozhen, what's the difference between your 2be and 2BV water ring vacuum pumps? EVP's 2be is optimized and improved on the basis of 2BV. After many internal details are improved, it has long service life and high efficiency, which makes many customers choose 2be.

Large refineries choose water ring vacuum pumps

Why is the impeller of 2BV water ring vacuum pump grinded?

We found that many enterprises reflect that the impeller of 2BV water ring vacuum pump will be damaged due to friction with the disc
The reasons are as follows:
① The motor shaft moves too much in series
② Unreasonable assembly of impeller and motor shaft
③ The extracted gas contains corrosion, and the motor shaft sleeve is not corrosion-resistant
④ There is no annealing difficulty for the disk, and it is deformed for a period of time
2bvf water ring vacuum pump produced by Foshan Vacuum Pump Factory Co., Ltd.:
① Wannan special motor is adopted and strictly tested before leaving factory (motor shaft is well matched)
② Impeller and shaft adopt strong tension account set to ensure long-term use
③ 304 stainless steel shaft sleeve is used in corrosive occasions, which can completely withstand corrosive working environment
④ All parts are annealed for durability and no deformation
⑤ Before leaving the factory, we have passed the professional and strict test to ensure the high quality of products

Newest SV-020 Specially designed for packaging machines

Paper-ME 2021