LB型不可抽式立式长轴湿坑泵

概述

LB型不可抽式立式长轴透平泵适用于电厂、钢厂、自来水公司、污水处理厂、石油化工、矿山等工矿企业，以及市政给排水工程、农业灌溉、防洪排涝等工程。可以用来输送55℃以下的清水、雨水、铁皮坑水、污水以及海水等介质，流量范围30-8400m³/h，扬程范围10-200m。特殊设计的输送介质温度可达90℃。

Description

The said series pumps are used to transfer clear water,rain water,water in iron sheet pits,sewage and seawater,servicing in power plants,iron and steel works,water supply companies,sewage treatment plants,petroleum and chemical industries,mines as well as municipal water supply and drainage projects,farmlands irriagation,flood protection and drain waterlogged farmlands,etc..The temperature of pumped media is below 55℃ and reaches to 90℃ for special design. The flow rate ranges from 30 to 8400m3/h and the head—from 10 to 200m.

LB型不可抽式立式长轴湿坑泵产品特点

1、 运行平稳，安全可靠，免抽真空启动，使用寿命周期长。

2、 泵体积小，基础占地面积少，基础以下泵长度可以调整，适应性强。

3、 流道简单可靠，节省泵房基建投资。

4、 结构合理，装拆方便，维护检修容易简便。

5、 泵效率高，降低运行成本。

Features

1. Operation smooth,safe and reliable,starting without exhausting vacumn,service life long.

2. The volumn of the pump small,less occupied land area, the length under foundation adjustable,applicability strong.

3. Flowing channel simple and reliable,saving the investment for construction of the pump house.

4. Structure reasonable,convenient for mounting and dismantling,,easy to maintain and inspect.

5. Efficiency high, operating cost reduced.

LB型不可抽式立式长轴湿坑泵型号说明

 500LB-55.3Ⅰ(×2、3)

 500—Outlet of the pump:500mm

 L---Vertical mixed flow pump

 B---Non pull-out rotor

55.3---Design head

Ⅰ---Pump design class(no mark when first time design)

 ×2-- Stage number

LB型转子不可抽式立式长轴湿坑泵产品结构说明

简图一. LB型不可抽立式长轴湿坑泵结构简图(型式:ST) Sectional Arrangement Of Type LB(Type ST)

简图二.LB型立式长轴泵湿坑泵2级结构简图(型式:ST)Sectional Arrangement Of Type LB With Two Stages(Type ST)

1、 LB型立式长轴泵为立式单级（多级）离心式或斜流式带导叶体结构。

2、 泵的结构型式有泵吐出口在安装基础之上和之下(型式代号分别为S和X)、泵承受轴向力和电机承受轴向力(型式代号分别为T和D)、外接润滑水和泵自身润滑等形式。

3、 泵安装型式有湿坑式安装或干坑式安装。

湿坑式安装：泵下部浸没在吸水池中。

干坑式安装：泵采用管道进水，泵吸入喇叭口与进水管道之间采用90°肘形进水弯管联接。

4、 泵轴承为橡胶导轴承或赛龙导轴承。

5、 泵口径在1000mm以下时，泵转子一般为不可抽形式；泵轴向水推力及转子重量一般由泵本体推力轴承承受，泵和电机之间采用弹性联接；泵吐出口位于安装面基础之上（型式代号为ST的结构形式）。如有要求，也可以由电机承受轴向水推力及转子重量；或其它结构形式的组合（型式代号为SD、XT、XD）;用户如有要求， 也可以设计成可抽式结构形式。泵口径在1000mm以上时，泵转子一般为可抽形式；泵轴向水推力及转子重量一般由电机推力轴承承受，泵和电机之间采用刚性联接；泵吐出口位于安装面基础之下（型式代号为XD）。如有要求，也可以由泵承受轴向水推力及转子重量；或其它结构形式的组合（型式代号为XT、SD、ST）。用户如有要求， 也可以设计成不可抽式结构形式。

6、 泵本体承受轴向水推力及转子重量时，泵推力轴承采用稀油润滑，推力轴承部件带Pt100测温元件测轴承温度或压力式温度计测润滑油温度。

7、 泵轴向密封采用填料密封。

8、 在泵安装基础上可以进行叶轮与叶轮室（转动部分与静止部分）之间间隙的调整，操作方便。

9、 从吐出方向往泵看，电机接线盒与泵外接润滑水接管位于左侧。也可根据用户要求，布置在其它方位。

Structure feature:

1.   Series LB pumps are of vertical single stage and/or multistage centrifugal or     mixed flow with diffuser types.

2.   The following structure types are available for the pump:the discharge opening above and/or under the mounting foundation(Type Code named S and X respectively);the axial thrust force born by the pump and/or by the motor(Type Code named T and D);lubricating water from outside and/or from the pump itself.

3.   The intake sump is of wet pit and/or dry pit types.

Wet pit type:lower part of the pump inundated in the intake sump.

Dry pit type:the water enters into the pump,the suction bellmouth is connected with the inlet  pipe of the pump by means of elbow bend pipe of 90.

4.   Rubber guide bearings and /or the Thordon guide bearings are available for  bearings of the pump.

5.   Generally when the nozzle diameter of the pump is under 1000mm , non pull-out type is adopted for the rotor and the discharge opening is above the mounting foundation(Type Code named ST). In this case the axial thrust force and the weight of the rotor are usually born by thrust bearings of the pump itself and  flexible connection is adopted between the pump and the motor.The thrust force and the weight of the rotor can also be born by the motor if required,or other structure types such as SD,XT,XD are available .Rotor pull-out type can also be adopted if required by clients.

Generally when the discharge diameter of the pump is above 1000mm, pull-out type is adopted for the rotor and the discharge opening is under the mounting foundation(Type Code named XD).In this case the axial thrust force and the weight of the rotor are usually born by thrust bearings of the motor and rigid connection is adopted between the pump

and the motor. The axial thrust force and the weight of the rotor can also be born by

the pump if required,or other structure types such as XT,SD,ST are available .Rotor non pull-out type can also be adopted if required by clients.  

6.   When the axial thrust force and the weight of the rotor are born by pump itself,the thrust bearing of the pump is lubricated with dilute oil and is equipped with a temperature detector Pt100 to detect bearing temperature and a pressure type thermometer to detect the temperature of lubricating oil.

7.   The antielectrochemical corrosion appliance is adopted for the part of the pump contacting the liquid to ensure the service life of the pump when seawater is pumped.

8.   The packing seal is adopted for the axial seal of the pump.

9.   The clearance between the impeller and the impeller chamber,i.e.the rotating component and the static component,can be easily adjusted on the pump mounting foundation.

LB型不可抽式立式长轴湿坑泵产品主要零部件材质Materials Of Major Parts

注：根据用户具体使用要求，可另选其它适合材质。铸铁材质叶轮只适用于闭式叶轮。

Remarks:Other materials are  available at the request of clients.Cast iron is suitable only for closed type impeller.

LB型不可抽式立式长轴湿坑泵型谱图

LB型立式长轴湿坑泵外形尺寸图(基本型式XD)