Removal and installation steps - of the roots vacuum pump is analysed

roots vacuum pump use after a period of time, there will be some shortcomings. We should pay attention to check whether bearing, oil seal, seal machine, belt and so on. In the process of maintenance. If there are any damage, should change in time, and do the installation of roots water pump.

1。 Remove and clean

the first step is to remove the triangle, import and export pipeline pump, heating steam pipeline and nitrogen pipeline. Remove the anchor bolt and remove the vacuum pump to maintenance platform.

the second step is to open the water pump at the top of the cover plate, at all levels from top cover plate to insert the feeler, measured before and after the space between the rotor and partition at all levels, and make records.

in the end, with the upper marker tags vacuum pump the whole plane position, in order to avoid errors in the process of recovery. Clearly the driving rotor and driven rotor; Before and after the position. Remove the vacuum pump of the water pump body connection bolt, and from the end of the disassembly step by step. At all levels at the same time, measure and record the separator between the thickness of the paper pad, until they are completely removed. Using alcohol to clean all parts of the vacuum pump. Scale parts can be cleaned with gauze paper. Rough part of the rotor wall plate and baffle plate application file repair level off, and polishing machine polishing.

2。 Installation steps

ready for the new rotor, bearing, oil seal, mechanical seal, and to replace the paper pad. Bearing box wall plate before and after the replacement of oil seal, for later use.

( 1) With rectangular box fixed maintenance platform, put before the main rotor partition in the above, according to the tags placed the driving and driven rotor, gradually in the four corners installation pump shell, diaphragm, interstage seals, adjust the paper pad and the cylindrical pins, pay attention to the consistency of paper thickness adjustment and remove the record, tighten the bolt pump body.

( 2) On both ends of the pump body flat on the maintenance platform, partition to install rotor throttling ring; Install the bearing box wall plate; Install the bearing seat and bearings.

( 3) With feeler check before and after the rotor at all levels and the space between the diaphragm, requirements in line with the vacuum pump maintenance manual clearance data. Under normal circumstances, the rotor and clearance between diaphragm is greater than the minimum required before and after, the adjusting range of 0 ~ 0. 10 mm

( 4) With synchronous gear: installation with keyway locking synchronous gear. Can use first hand gently pressed tapered synchronous gear.

( 5) Will fat two rotor Angle adjustment to 90 degrees, in the secondary two rotor, inserted between feeler, with vertical long axis fixed rotor; Gently rotate another rotor by hand and feel tightness before and after are equal, then tighten the taper lock nut on the synchronous gear. Manual turns should not be blocked again.

( 6) With a feeler check the clearance between the rotor at all levels, and check the two rotor with 45 degrees between the horizontal position. D is the total clearance between two rotors. In general, for the rotor in - 45 for D / 3, the rotor 45 for 2 d / 3.

( 7) Before and after installing HouGaiBan of the bearing, oil seal, and mechanical seal, cooling water tank, after installation to install belt pulley.

( 8) Install the roots vacuum pump back to the original equipment foundation, tighten the anchor bolt, adjust the triangle elastic, restoration of import and export pipeline connection.

( 9) Add the lubricating oil, check the sealing situation, ready to test run.

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