法蘭在同一水平面上 葉輪的葉型具有優(yōu)異的水力性能 對于臥式泵：泵軸的兩側(cè)由軸承支承 立式泵：上端軸承為油脂潤滑軸承，底部采用介質(zhì)潤滑的碳化硅耐磨滑動(dòng)軸承、陶瓷軸承或聚胺脂橡膠軸承。
泵軸完全密封，不接觸介質(zhì)，無腐蝕；泵軸短，剛性好、無振動(dòng) 泵體密封環(huán)，以其與葉輪的間隙 軸封有軟填料密封和機(jī)械密封兩種型式 泵以彈性聯(lián)軸器與電動(dòng)機(jī)直接聯(lián)接 |
alignment.
Suction and discharge nozzles in lower half of casing are at the same
level(in-line design). Short distance is between bearings and correspondingly short shaft. Leak-tight due to compact joint
flange with long, prestressed bolts. Easy mounting - self- aligning upper casing.
The impeller has new vane passage with excellent
nyhrafihc characteristics and it has been balanced static. Minimal axial thrust
clue to double- entry impeller. Smooth, quiet running is also guaranteed by a large impeller eve area and
smooth, low loss running due to a
swirl-free inlet. Also with wear rings, if requested.
To horizontal pump: shaft is provided
with two bearings mounted in the bearing housings at both ends. Covered, sealed
for life grease lubricated antifriction bearing for a long service life. It
also can be optional oil lubrication with constant level oiler. The fixed
bearing at the internal bearing end is located on a bush to permit rapid changing
without removing the rotor or upper half.
To vertical installation: top bearing:
grease lubricated deep groove ball bearing, sealed for life; bottom bearing: wear
resistant, medium lubricated plain bearing of silicon carbide (Residur -
bearing).
The shaft completely sealed and dry for
zero corrosion, short and rigid
with negligible vibrations. Replaceable shaft protecting sleeves are fitted in
the searl area. The screw thread is not exposed to pumped medium, long
operating life and no corrosion. Quick and easy assembly dismantling of the
rotor components due to elastically prestressed mountings.
The close running fit between the pump casing
wearing rings and the impeller minimizes the leakage of water back into the
suction part. The rings protect the casting from wearing and can be promptly
replaced with the spare parts when they have been worn out.
The shaft seal has two type: stuffing seals and mechanical sea, Is.
The packing must be properly pressed ,by adjusting the gland. Open gland, i. e.
enough space for service activities.
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