均鑄在下半部泵體上 葉輪的葉型具有優(yōu)異的水力性能 對(duì)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(rùn)滑軸承，底部采用介質(zhì)潤(rùn)滑的碳化硅耐磨滑動(dòng)軸承 泵軸完全密封，不接觸介質(zhì)，無(wú)腐蝕 泵體密封環(huán) 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
leve(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 hydraulic characteristics and it has been balanced
static. Minimal axial thrust due to double- entry impeller. Smooth, quiet running is also guaranteed by a
large impeller eye area and smooth, low loss running due to a swirl- free inlet. Also with wear rings, if requested.
To horizontal pupm: 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 form 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
seals. The packing must be properly pressed by adjusting the gland. Open gland,
i. e. enough space for service activities.
Couplings of flexible type
connect the
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