DK

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DK

Small centrifugal pump type is composed of motor, water pump and seal.

The motor is single-phase or three-phase Asynchronous motor with typical centrifugal wheel structure pump; single end mechanical seal between the pump and motor.

Drainage process: the driving machine rotates the impeller through the pump shaft to generate centrifugal force. Under the action of centrifugal force, the liquid is thrown to the impeller outlet along the blade flow channel, and the liquid is collected and sent into the discharge tube through the volute. The liquid obtains energy from the impeller, which increases both the pressure energy and the speed energy, and relies on this energy to deliver the liquid to the work site.

Suction process: when the liquid is thrown to the outlet of the impeller, a low pressure is formed at the center of the impeller inlet, and the pressure difference occurs between the suction tank and the impeller at the center. Then, the liquid in the suction tank constantly enters the impeller through the suction line and the suction chamber of the pump.

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Description

Pump

Cast iron pump body

PPO impeller

AISI 304 shaft

Max. liquid temperature: +60℃

Max. suction: +9m

 

Moter

Motor with copper winding

Built-in thermal protector for single phase motor

Insulation class: F

Protection class: IPX4

Max. ambient temperature: +40℃

 

Application Area

Conveying water or other liquids similar to water. It is suitable for industrial and urban water supply, high-rise building pressurization, fire protection system, garden irrigation, long-distance water transportation, HVAC, hot and cold water circulation pressurization and supporting facilities.

 

Installation Notice

The shallow well pump should be installed in a dean, dry and ventilated location which provides adequate room for servicing and protection from freezing temperatures. It should be bolted to a good foundation, preferably concrete and provided adequate drainage.

 

Operation Warning

Do not run the transfer pump without water as the seals and impeller may be permanently damaged. Pouring clean water until pump chamber and the inlet pipe are completely filled.

Parameter

Model Instruction

 

Technical Table

Model

Power

DN

Q(m³/h)

0

3

6

9

12

15

18

21

24

kW

HP

Q(L/min)

0

50

100

150

200

250

300

350

400

1DK15

0.37

0.5

1"×1"

H(m)

16.5

13.5

9

/

/

/

/

/

/

1DK20

0.55

0.75

1"×1"

20

17

13

/

/

/

/

/

/

1.5DK18

0.55

0.75

1.5"×1.5"

18

17

16

12

5

/

/

/

/

1.5DK20

0.75

1

1.5"×1.5"

20

18

16

14

12

7

/

/

/

2DK20

1.1

1.5

2"×2"

20

19.5

19

18

17.5

16

14.5

11

8

 

Performance Curve

 

Model Analysis

1

Drain plug

Brass

8

Water-throwing ring

NBR

15

Screw

Galvanized

2

Pump body

Cast iron

9

Bearing

 

16

Wave washer

65Mn

3

Flat key

AISI201

10

Rotor

 

17

Rear cover

ZL102

4

Impeller

PPO

11

Stator

 

18

Fan

PP

5

O ring

NBR

12

Pump base

ZL102

19

Fan cover

Iron

6

Mechnical seal

Ceramic-graphite

13

Capacitor

 

 

 

 

7

Connector

Cast iron

14

Capacitor cover

ABS

 

 

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