LK type extractable vertical long shaft pump

Overview

LK type extractable vertical long-axis pump is suitable for power plants, steel mills, water supply companies, sewage treatment plants, petrochemicals, mining and other industrial and mining enterprises, as well as municipal water supply and drainage projects, agricultural irrigation, flood control and drainage projects. It can be used to transport media such as clean water, rainwater, iron pit water, sewage and seawater below 55 ℃ , with a flow range of 30-70000m3/h and a head range of 7-200m. The specially designed conveying medium temperature can reach 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 ⁰ C and reaches to 90 ⁰ C for special design. The flow rate ranges from 30 to 20000m ³ /h and the head — from 7 to 200m.

LK type extractable vertical long shaft pump product features

1. Smooth operation, safe and reliable, no need to start by vacuuming, and long service life.

2. The pump is small in size, the foundation occupies less area, the length of the pump below the foundation can be adjusted, and it has strong adaptability.

3. The flow channel is simple and reliable, saving the infrastructure investment of the pump room.

4. Reasonable structure, easy assembly and disassembly, easy and simple maintenance and overhaul.

5. High pump efficiency, reducing operating costs.

Features

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

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

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

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

5. Efficiency high, operating cost reduced.

LK type extractable vertical long shaft pump model description

1400LK-30 Ⅰ 500LB-55.3 Ⅰ ( × 2 , 3)

1400 — Outlet of the pump:1400mm 500 — Outlet of the pump:500mm

L----Vertical mixed flow pump L----Vertical mixed flow pump

K----Pull-out rotor B---Non pull-out rotor

30---Design head 55.3---Design head

Ⅰ ---Pump design class(no mark when Ⅰ ---Pump design class(no mark when

first time design) first time design)

Remarks: multistage type is usually × 2-- Stage number

Not designed for the pump of large

nozzle diameter.

Product Structure Description

Simplified diagram 1. Structural diagram of LK type vertical long shaft pump (type ST)

Figure 2. LK vertical long-axis pump structure diagram (type XD)

1. LK type extractable vertical long-axis pump is a vertical single-stage (multi-stage) centrifugal or diagonal flow type with guide vane structure.

2. The structural types of the pump include the pump outlet being above or below the installation foundation (type codes are S and X respectively), the pump bearing axial force and the motor bearing axial force (type codes are T and D respectively), external lubricating water and pump self-lubrication, etc.

3. Pump installation types include wet pit installation or dry pit installation.

Wet pit installation: The lower part of the pump is immersed in the suction sump.

Dry pit installation: The pump uses pipe water inlet, and a 90° elbow water inlet bend is used to connect the pump suction bell and the water inlet pipe.

4. The pump bearings are rubber guide bearings or Sailong guide bearings.

5. When the pump diameter is below 1000mm, the pump rotor is generally non-extractable; the pump axial water thrust and rotor weight are generally borne by the pump body thrust bearing, and the pump and motor are elastically connected; the pump outlet is located above the installation surface foundation (the structure with the type code ST). If required, the motor can also bear the axial water thrust and rotor weight; or other structural combinations (type codes SD, XT, XD); if the user requires, it can also be designed as an extractable structure. When the pump diameter is above 1000mm, the pump rotor is generally extractable; the pump axial water thrust and rotor weight are generally borne by the motor thrust bearing, and the pump and motor are rigidly connected; the pump outlet is located below the installation surface foundation (type code XD). If required, the pump can also bear the axial water thrust and rotor weight; or other structural combinations (type codes XT, SD, ST). If the user requires, it can also be designed as a non-extractable structure.

6. When the pump body bears the axial water thrust and the weight of the rotor, the pump thrust bearing is lubricated with thin oil, and the thrust bearing component is equipped with a Pt100 temperature measuring element to measure the bearing temperature or a pressure thermometer to measure the lubricating oil temperature.

7. The pump axial seal adopts packing seal.

8. The gap between the impeller and the impeller chamber (rotating part and stationary part) can be adjusted on the basis of pump installation, which is easy to operate.

9. When looking at the pump from the discharge direction, the motor junction box and the pump external lubrication water pipe are located on the left. They can also be arranged in other positions according to user requirements.

Structure feature:

1. Series LK,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,ie the rotating component and the static component, can be easily adjusted on the pump mounting foundation.

LK type vertical long shaft pump product main parts

Note: Other suitable materials can be selected according to the specific requirements of users. Cast iron impellers are only suitable for closed impellers.

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

LK type extractable vertical long axis pump type spectrum

LK long-axis pump dimensions (basic type XD)