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渣漿泵的軸承、 軸承部件的選擇與使用
泵的軸承是支承泵轉子旋轉的部件，用來承受徑向載荷或徑向和軸向的聯合載荷。軸承
在泵中只是一個小部件，但它關系到泵的運行可靠性。泵的故障經常出現在泵的軸承中，當軸承發(fā)生故障時，泵就無法運轉，所以軸承選擇是否合理，使用是否正確是非常重要的。根據軸承結構的不同，可分為滾動軸承和潛動軸承兩大類。
一、 滾動軸承
1.滾動軸承的使用場合
滾動軸承的優(yōu)點是:軸承磨損小，磨損后泵的轉子不會下沉，軸承間隙小，能保證對中性;結構簡單，軸承的軸向尺寸小，標準化程度高，通用性互換性好，到處可以購到，價格便宜，使用安裝維修方便;摩擦系數小，泵的啟動力矩小。
滾動軸承的缺點是:負擔沖擊的能力差，高速時易有噪聲，安裝時要求準確。
由于滾動軸承的眾多優(yōu)點，滾動軸承在泵中使用非常廣泛，一般轉速在3000r/mim以下，軸徑在100mm以下，首先選用滾動軸承。
2.滾動軸承的分類及特性
(1) 滾動軸承的分類如下:
(2)各類滾動軸承的特點:
①深溝球軸承:主要承受徑向載荷，也可同時承受少量的雙向載荷。結構簡單，安裝、拆卸、使用很方便。
②角接觸球軸承，單列可承受徑向和雙向軸向載荷的聯合載荷但不宜承受純軸向載荷。列可受徑向為主和雙向朝向載荷的聯合載荷但不宜承受純軸向載荷。
③調心球(滾子) 軸承:主要承受徑向載荷，也可同時承受少量的雙向軸向載荷。
④圓柱滾子軸承:僅能承受徑向載荷，內、外圈帶擋邊的單列軸承可承受較小的軸向載荷。
⑤滾針軸承:僅能承受徑向載荷。
⑥圓錐滾子軸承:主要承受以徑向載荷為主的徑向軸向聯合載荷，而大錐角可承受以軸向載荷為主的徑向軸向聯合載荷。單列的圓錐滾子軸承在徑向載荷作用下會產生附加軸向力，因此，一般應成對使用。 圓錐滾子軸承的極限轉速較低。
⑦推力軸承:推力球軸承51000型只能承受單向軸向載荷，52000 型可承受雙向軸向載荷。
推力圓柱、圓錐軸承，只能承受單向軸向載荷。
推力調心滾子軸承，承受軸向載荷為主的軸向、徑向聯合載荷，但徑向載荷不得超過軸向載荷的55% 渣漿泵廠家
Selection and use of bearing and bearing parts of slurry pump
The bearing of the pump is a component supporting the rotation of the pump rotor, which is used to bear radial load or combined radial and axial load. Bearing
In the pump is only a small part, but it is related to the operation reliability of the pump. Pump failure often occurs in the bearing of the pump. When the bearing fails, the pump cannot operate, so whether the bearing selection is reasonable and whether the use is correct is very important. According to the different bearing structure, it can be divided into two categories: rolling bearing and submerged bearing.
I. rolling bearing
1. Application of rolling bearing
The advantages of rolling bearing are: small bearing wear, no sinking of the pump rotor after wear, small bearing clearance, which can ensure neutral; simple structure, small axial size of the bearing, high degree of standardization, good universality and interchangeability, which can be purchased everywhere, low price, convenient installation and maintenance; small friction coefficient, small starting torque of the pump.
The disadvantages of rolling bearing are: poor ability to bear impact, easy to have noise at high speed, and accurate installation.
Because of many advantages of rolling bearing, rolling bearing is widely used in pumps. Generally, the speed is below 3000r / MIM, and the shaft diameter is below 100mm. First, rolling bearing is selected.
2. Classification and characteristics of rolling bearing
(1) the classification of rolling bearing is as follows:
(2) characteristics of various rolling bearings:
① deep groove ball bearing: mainly bear radial load, but also bear a small amount of bidirectional load at the same time. The structure is simple and easy to install, disassemble and use.
② angular contact ball bearing, single row can bear the combined load of radial and bidirectional axial load, but not pure axial load. The column can bear the combined load of radial and bidirectional direction load, but it is not suitable to bear the pure axial load.
③ self aligning ball (roller) bearing: mainly bear radial load, but also bear a small amount of bidirectional axial load at the same time.
④ cylindrical roller bearing: it can only bear radial load, and single row bearing with inner and outer ring flange can bear smaller axial load.
⑤ needle bearing: only able to bear radial load.
⑥ tapered roller bearing: it mainly bears the combined radial and axial load mainly based on the radial load, while the large cone angle can bear the combined radial and axial load mainly based on the axial load. Single row tapered roller bearings will produce additional axial force under radial load, so they should be used in pairs The limit speed of tapered roller bearing is low.
⑦ thrust bearing: thrust ball bearing 51000 can only bear one-way axial load, and 52000 can bear two-way axial load.
Thrust cylindrical and tapered bearings can only bear one-way axial load.
The thrust self-aligning roller bearing shall bear the axial and radial combined load dominated by the axial load, but the radial load shall not exceed 55% of the axial load of the slurry pump manufacturer
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