1, often add fat, gear pump for high-speed operation, grease is easy to volatilize, so the lubrication of the bearings must be kept clean, and pay attention to the replacement.
2, always check the gear pump maintenance, electric pump should always check, maintenance, check the power line: internal line, plug, switch is good, the insulation resistance is normal, the brush tail is loose, commutator and brush contact, armature winding of stator winding is expanding moderate breaker phenomenon, bearing and rotation whether the damaged parts and so on.
3, save each parts and replace the same parts in the dismantling of gear pump, should keep each part, should pay special attention to the flameproof explosion-proof surface parts, including napped insulating liner and casing can make the damage, if damaged, must replace with the same components, using alternative materials or the original specifications below the raw material properties of inconsistent parts shall not, the assembly should be all parts according to the original position installed, can not be missed.
4, pay attention to the insulation resistance of the gear pump, long-term dormant or use in wet environments of electric pump pump, before use must be megger insulation resistance of winding with 500 volts. If the insulation resistance between the winding and the motor shell is less than 7 mega, it is necessary to dry the winding.
5, pay attention to the preservation of the electric pump in the environment of dry, clean and no corrosive gas.
After the wear of the drive shaft and bushing of the gear pump, the gap between the pump and the gear pump will increase, which will affect the oil quantity of the pump. In this case, an active shaft or a bushing can be used to restore the normal clearance. If the wear of the active shaft is slight, only the old bushings should be replaced with the standard size bushing, which can be restored to the allowable range with the clearance. If the wear of the driving shaft and bushing is serious and the joint clearance is too high, it is necessary to replace the bushing, and the diameter of the driving shaft is increased by chrome plating or vibrating surfacing. Then the grindstone is grinded to the standard size to restore the matching requirements with the bushing.
Shell crack available 508 cast nickel copper electrode welding. The weld must be close to no hole, and the plane degree error of the joint with the pump cover is not more than 0.05 mm.
How to maintain the sanitary pump by the gear oil pump
Wear repair
After the wear of the bushing hole of the active shaft, the wear marks can be eliminated by the reaming method, and then the bushing is added to the corresponding size. The wearing of the driven shaft hole also eliminates the wear marks by reaming, and then compounded the driven shaft according to the actual size of the reamed hole.
Pump shell repair
After the inner cavity of the pump shell is worn, the inner cavity set method is generally adopted to repair the inner cavity, and then the inner cavity will be lined with cast iron or steel bushing. After the set, the inner cavity will be 5 and the seat repair: the pressure limiting valve has two kinds of ball valve and plunger type valve. When the spherical seat is worn, a steel ball can be placed on the seat, and then the ball is gently tapped with a metal rod until the ball valve is close to the seat. If the seat is worn seriously, the grinding marks can be removed by reaming, and then used to make it close. After the plunger seat is worn, a little valve sand can be grind until the tightness.
Pump cover repair
Repair of work plane: if the working surface of pump cover is small, manual wear can be used to eliminate wear marks. That is to put a little valve sand on the platform or thick glass plate, and then pump the lid on the top to grind until the wear marks are eliminated, and the working surface is smooth. When the wear depth of the working plane of the pump cover exceeds 0.1 millimeters, the first turning and grinding should be taken to repair it.
- Close This Page
- Recommendation：
- Browse：
