均鑄在下半部泵體上。泵殼下半部分的進(jìn)出口法蘭在同一水平面上，即殼體采用直線型設(shè)計(jì)，兩端支承間距離短，法蘭之間連接用較長(zhǎng)的螺栓，無(wú)泄漏。泵蓋能自動(dòng)校正，便于安裝。
葉輪的葉型具有優(yōu)異的水力性能，經(jīng)過(guò)靜平衡校驗(yàn)。葉輪設(shè)計(jì)成對(duì)稱，液體從兩側(cè)進(jìn)入葉輪，可以使軸向力減小到最低限度。葉輪進(jìn)口面積大，進(jìn)口無(wú)渦流，運(yùn)行平穩(wěn)，噪音小。如果需要，葉輪也可以帶有密封環(huán)。
對(duì)于臥式泵：泵軸的兩側(cè)由軸承支承，軸承采用封閉式滾動(dòng)軸承，可用油脂潤(rùn)滑，運(yùn)行時(shí)間長(zhǎng)；也可配置恒定油位的油杯，用稀油潤(rùn)滑。自由端軸承裝有軸套，這樣可以在不拆除轉(zhuǎn)子或泵殼的情況下迅速更換軸承。
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、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(wú)腐蝕；泵軸短，剛性好、無(wú)振動(dòng)，軸上帶有可隨時(shí)更換的軸套，軸套伸入密封區(qū)；螺紋與介質(zhì)不直接接觸，耐腐蝕，運(yùn)行壽命長(zhǎng)；裝配時(shí)無(wú)須調(diào)整；采用彈性預(yù)應(yīng)力裝配，轉(zhuǎn)子部件裝拆簡(jiǎn)便迅速。
泵體密封環(huán)，以其與葉輪的間隙，來(lái)減少壓水室內(nèi)的液體漏回吸水室。密封環(huán)保護(hù)泵殼免于磨損，本身為易損零件，磨損后可以備件更換。
軸封有軟填料密封和機(jī)械密封兩種型式。填料壓緊程度必須適當(dāng)填料壓蓋為開(kāi)式，可有足夠的空間用于維修、保養(yǎng)。
泵以彈性聯(lián)軸器與電動(dòng)機(jī)直接聯(lián)接。
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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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