1. Mastery of the pump assembly sequence. First remove the above, after the demolition of the following, first remove the outside, after the demolition inside, the first demolition of the assembly, the assembly sequence and the removal of the order of the contrary. When removing the original record, review the concentric degree, the record of the axle to the gap. Remove the mark when the wheel is done, remove the seal and measure the amount of the original compression.
2. Master the measurement and adjustment of pump. Channeling of the size of the pump has a certain effect, the amount of small, easy to cause the impeller and pump casing wear, channeling, and will reduce the efficiency. Scoring channeling, when the balance of the disc is not removed, pulling the rotor back and forth, making the amount of the post. Remove the balance after the movement back and forth for the rotor of the total amount of channeling, minus the total amount of channeling channeling volume is equal to the amount of channeling before after. The adjustment of the amount of the adjustment, can be in front of the balance plate and the pad or the balance seat pad. Adjusting the total amount of channeling, using the change of the impeller ring length to achieve, when the amount of the small ring with a shorter ring or increase the length of the pump casing between the gasket, when the amount of large, can be extended to the mouth ring or replace the mouth ring. Multi-stage pump rotor channeling, how do we determine the answer: (1) to measure the rotor the total amount of channeling, it take half of the total amount of channeling stator and rotor center, 2-3 multistage pump channeling front-end than large back-end 0.5-1.0mm. Examples: a multi-stage pump rotor assembly, channeling capacity decreased gradually, or even zero, tries to analyze the reasons? Reason: it's a stage impeller short sleeve length, assembly, level sets of short exchanged position. The bulkhead spigot gasket is too thin.
3. Measurement and adjustment of compression. When the seal is removed, the original amount of compression is measured, and the range of compression is generally 4-6mm. Measurements of original compression, with a steel ruler measurement grant to cover the distance. Gran bolt loosen, measuring grant to cover the distance. Two numerical subtraction is the original amount of compression. The measurement method of the compression amount of the installation: the plane as a reference plane perpendicular to the axis line, the measurement and calculation of the relative position of the dynamic and static ring sealing surface and the reference surface, thus the size of the compression is obtained. Adjustment method for the amount of compression: pad of addition and subtraction in England, (2) in the sleeve tail plus or minus pad, 2-3 between the sleeve and the spring box plus or minus pad or car box spring tail and sleeve shoulder, the shaft sleeve to on the shaft positioning (top wire positioning sleeve). Static ring installation note static ring tail anti rotary slot and anti rotation pin should maintain the axial clearance of 1-2mm, the static ring is arranged in the Grany with depth gauge check parallelism, gland bolts tightened evenly to prevent end cap of deviation.
4. Master the measurement and standard treatment of the clearance between the separator at all levels. Stop measure caliber to gap method: by playing table, two diaphragm assembly, magnetic table frame ceiling in a partition, table pointer hit the other separator, a baffle, rotating the other partition (grasping clapboard, and the dislocation other separator), playing table values for bulkhead spigot radial clearance. Check the gap between the large diameter, the impact of the rotor and the stator of the coaxial degree, so that the gap between the mouth of a small gap, the mouth ring eccentric wear, and even the disc does not train. The axial clearance can be detected feeler.
5. Master the measurement method of the stator axial degree. Coaxiality measurement method: playing table method, the magnetic table frame ceiling in the sealed box check mouth or face on (surface should be clean), header and the shaft or shaft contact, the shaft to rotate 360 degrees, the meter reading on the maximum value and minimum value difference of coaxiality. The table frame in the shaft or sleeve, a sealing box or spigot end, the axis of rotation of 360 degrees, the value of vertical play table.
