Any kind of thing for a long time, will produce wear and tear, then we need our professional maintenance team timely repair or replacement, if something is broken we do not maintenance, then it can not be reused, so as to avoid excessive wear and tear High cost of replacement products. So Xiaobian today will introduce some of the vacuum pump repair and maintenance tips on some of the professional knowledge of vacuum pumps, let us understand together. 1 shaft bearing wear Vacuum pump transmission parts wear is a common problem, including bearing bit, bearing seat, bearing room, keyway and thread and other parts of the wear and tear, the traditional method to repair welding and brush plating spraying, but both have certain drawbacks: Thermal stress can not be completely eliminated, easily lead to material damage, resulting in parts bent or broken; and brush plating coating thickness limit, easy to peel, and the above two methods are used metal repair metal, can not change the "hard to hard" With the combined effect of various forces, will still cause wear and tear again. Maintenance Tips: Contemporary Western countries often use polymer composite repair method, the application of more is the United States and the United States and Ka Wah technology system, with strong adhesion, compressive strength and other properties. This method can be removed to avoid demolition, free machining. Neither repair welding thermal stress, repair thickness is not limited, while the product has the concession, can absorb shock and vibration equipment, to avoid wear and tear, and greatly extend the service life of equipment components, saving enterprises a lot of downtime and create huge The economic value. 2 corrosion Vacuum pump corrosion morphology can be divided into two categories of general corrosion and local corrosion, the former occurred more uniformly in the entire surface of the vacuum pump, the latter occurred only in the local, such as pitting, crevice corrosion, intergranular corrosion, stress corrosion. Maintenance Tips: The use of polymer composite materials on the surface of the vacuum pump organic coating anti-corrosion, has a very good chemical resistance and excellent mechanical properties and adhesive properties, compared with the traditional pressure vessel welding repair, with the construction of simple, cost Low, safe performance and good repair effect. 3 shell cracked Vacuum pump due to casting, machining defects, internal stress and overload operation and other reasons often lead to cracks or parts of the phenomenon. Maintenance Tips: Conventional repair method is the use of welding, but some parts of the material is cast iron, aluminum, titanium alloy, it is difficult to do the welding process. There are some dangerous situations prone to explosion, but also more difficult to use welding repair methods. Mijia technology is a "cold welding" technology that can avoid thermal stress deformation, while the material has good adhesion and pressure, corrosion and other properties, to maximize the use of various equipment components to meet the requirements of the lowest The cost of investment effectively ensure the production, safety, convenience and reliability. 4 oil spill This is one of the most common failures of Edwards rotary vane vacuum pumps, which mainly occurs in three positions of the oil pump, oil tank gasket and motor shaft seal. The main reason is that the vacuum pump is used for a long time and causes the aging of these parts , Seal failure, resulting in oil spills. Maintenance Tips: Replace the aging oil windows, shaft seals, gaskets and felt pads that have been filled with pump oil. After maintenance is completed, flush the vacuum pump with an Eva Vacuum pump oil before filling and clean the filter screen at the filler neck with a solvent Keep the tank clean. 5 can not pump the ultimate vacuum degree of vacuum pump First check the airtightness of the vacuum system to see if there is a slight leak. Secondly, gas ballast should be opened and the pump should be operated for about 30 minutes to pump out compressible steam caused by non-pump oil pollution and to exclude the influence of compressible steam on the ultimate vacuum. Excluding the above two factors, the other main reasons are: pump oil pollution, the need for oil change; pump oil filter blockage, resulting in poor compression oil system oil, insufficient oil, resulting in tight seal pump, then Need to clean the internal oil filter; oil distributor valve deformation, wear or damage can also lead to insufficient oil, then replace the oil valve should be replaced; prolonged use caused by the vacuum pump rotary blade wear or rotor spring tension is insufficient, , Resulting in inspiratory compartment and exhaust chamber isolation lax, resulting in reduced vacuum pump vacuum performance, then the rotary vane and spring should be replaced, and clean the rotor and pump chamber; check the exhaust valve to see if the action fails, resulting in Exhaust poor, if necessary, should replace the exhaust valve. 6 vacuum pump can not start The main performance of the vacuum pump can not start running after power. At this time should first check the circuit part of the vacuum pump, such as the fuse is burned down, the circuit part of the Department has no strength burn out. After eliminating the circuit part of the failure, should consider the following two factors: Motor burn out. Mainly for the stator coil burning, causing more causes, such as transient current is too large, the motor bearings worn for a long time, resulting in bearing frictional resistance increases, the motor power increases, causing the temperature rise, burning motor. At this time should first check the motor bearings, and then check the motor coil. Bearing damage to replace the bearing; motor coil burned should repair the motor, re-wound stator coil. Bearing and coil damage is serious, you need to replace the motor. Rotary blocking card. The main performance of the rotary vane and pump cavity surface frictional resistance is too large, resulting in motor can not be driven vane. The reason is that the vane is deformed, the spring in the rotor can not be reset after it is opened, or the combined force of the spring pressure and the centrifugal force of the vane itself is too large, resulting in excessive frictional resistance between the vane and the inner surface of the pump chamber. At this time should be promptly repaired rotary blades and springs, if not repaired, should be replaced. The wood pellet making machine is our patent product. It is vertical ring die type. It can make biomass pellets from various materials. Its design is mature and reliable. By Wood Pellet Machine, raw material is feeding vertically and directly in place, with stationary die and moving roller, the material is centrifugal and spread evenly around the die. The independent ejection device ensures the forming rate of pellet, the good design lowers the consumption and enhances the efficiency. It can work 24 hours and lubricate automatically. 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Experts teach you how to care for the vacuum pump
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