Shanghai Liancheng Pump Industry Co., Ltd
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WQ (QW) type unobstructed submersible sewage pump
The WQ type non clogging submersible sewage pump is a new generation of pump products developed based on the introduction of advanced foreign technolo
Product details

product overview
The WQ type non clogging submersible sewage pump is a new generation of pump products developed based on the introduction of advanced foreign technology and the characteristics of domestic water pump usage. It has significant energy-saving effects, anti entanglement, non clogging, automatic installation and automatic control. The effect is significant in the discharge of solid particles and long fiber garbage. This series of pumps adopts a unique impeller structure and a new type of mechanical seal, which can effectively transport solids and long fibers. Compared with traditional impellers, the impeller of this pump adopts a single channel or double channel form, which is similar to a curved pipe with the same cross-sectional size and has very good flow characteristics. Coupled with a reasonable volute chamber, the pump has high efficiency and the impeller has undergone dynamic and static balance tests, making the pump operate without vibration.

Product Features
1. Adopting a unique single or double blade impeller structure greatly improves the ability of pollutants to pass through, effectively passing through 5 times the fiber material of the pump diameter and solid particles with a diameter of about 50% of the pump diameter.
2. The mechanical seal adopts a new type of hard and corrosion-resistant titanium tungsten material, which can ensure the safe and continuous operation of the pump for more than 8000 hours.
3. The overall structure is compact, small in size, low in noise, and has significant energy-saving effects. It is easy to maintain and does not require the construction of a pump room. It can work underwater, greatly reducing project costs.
4. The pump is equipped with a high-precision anti-interference water leakage detection sensor in the sealed oil chamber, and a thermal sensor is embedded in the stator winding to automatically protect the water pump motor.
5. A fully automatic control cabinet can be equipped according to user needs to automatically protect the pump from water leakage, leakage overload, and overheating, improving the safety and reliability of the product
6. The float switch can automatically control the start and stop of the pump according to the required liquid level changes, without the need for special supervision, making it extremely convenient to use. The WQ series can be equipped with a dual rail automatic coupling installation system according to user needs, which brings greater convenience to installation and maintenance, and people do not have to enter the sewage pit for this.
8. It can be used within the full head without overloading the motor.
There are two different installation methods, fixed automatic coupling installation system and mobile free installation system.

application
Suitable for conveying granular wastewater and waste in industries such as chemical, petroleum, pharmaceutical, mining, papermaking, cement plants, steel mills, power plants, coal processing, as well as urban sewage treatment plant drainage systems, municipal engineering, construction sites, etc. It is also used for pumping clean water and corrosive media.

Model Meaning
For example: 200QW400-30P-55
200- Discharge outlet diameter (mm)
QW submersible sewage pump
400 rated flow rate (m3/h)
30- Rated head (m)
P-material is stainless steel
55- Motor power (kw)

order

name

Model number

caliber

mm

internet traffic

m3/h

lift

m

power

KW

rotational speed

r/min

efficiency

%

1

25 WQ 8-22-1.1

25

8

22

1.1

2900

38.5

2

32 WQ 12-15-1.1

32

12

15

1.1

2900

40

3

40 WQ 15-15-1.5

40

15

15

1.5

2900

45.1

4

40 WQ 15-30-2.2

40

15

30

2.2

2900

48

5

50 WQ 20-7-0.75

50

20

7

0.75

2900

54

6

50 WQ 10-10-0.75

50

10

10

0.75

2900

56

7

50 WQ 20-15-1.5

50

20

15

1.5

2900

55

8

50 WQ 15-25-2.2

50

15

25

2.2

2900

56

9

50 WQ 25-20-2.2

50

25

20

2.2

2900

56

10

50 WQ 18-30-3

50

18

30

3

2900

58

11

50 WQ 25-32-5.5

50

25

32

5.5

2900

53

12

50 WQ 20-40-7.5

50

20

40

7.5

2900

55

13

65 WQ 25-15-2.2

65

25

15

2.2

2900

52

14

65 WQ 37-13-3

65

37

13

3

2900

55

15

65 WQ 25-30-4

65

25

30

4

2900

58

16

65 WQ 30-40-7.5

65

30

40

7.5

2900

56

17

65 WQ 35-50-11

65

35

50

11

2900

60

18

65 WQ 35-60-15

65

35

60

15

2900

63

19

80 WQ 40-7-2.2

80

40

7

2.2

1450

52

20

80 WQ 43-13-3

80

43

13

3

2900

50

21

80 WQ 40-15-4

80

40

15

4

2900

57

22

80 WQ 65-25-7.5

80

65

25

7.5

2900

56

23

100 WQ 80-10-4

100

80

10

4

1450

62

24

100 WQ 110-10-5.5

100

110

10

5.5

1450

66

25

100 WQ 100-15-7.5

100

100

15

7.5

1450

67

26

100 WQ 80-20-7.5

100

80

20

7.5

1450

68

27

100 WQ 100-25-11

100

100

25

11

1450

65

28

100 WQ 100-30-15

100

100

30

15

1450

66

29

100 WQ100-35-18.5

100

100

35

18.5

1450

65

30

125 WQ 100-15-11

125

100

15

11

1450

62

31

125 WQ 130-20-15

125

130

20

15

1450

63

32

150 WQ 145-9-7.5

150

145

9

7.5

1450

63

33

150 WQ 180-15-15

150

180

15

15

1450

65

34

150 WQ 180-20-18.5

150

180

20

18.5

1450

75

35

150 WQ 180-25-22

150

180

25

22

1450

76

36

150 WQ 130-30-22

150

130

30

22

1450

75

37

150 WQ 180-30-30

150

180

30

30

1450

73

38

150 WQ 200-30-37

150

200

30

37

1450

70

39

150 WQ 160-45-37

150

160

37

37

1450

70

40

200 WQ 300-7-11

200

300

7

11

980

73

41

200 WQ 250-11-15

200

250

11

15

980

74

42

200 WQ 250-15-18.5

200

250

15

18.5

1450

72

43

200 WQ 400-10-22

200

400

10

22

1450

76

44

200 WQ 400-13-30

200

400

13

30

1450

73

45

200 WQ 300-15-22

200

300

15

22

1450

73

46

200 WQ 250-22-30

200

250

22

30

1450

71

47

200 WQ 350-25-37

200

350

25

37

1450

75

48

200 WQ 400-30-55

200

400

30

55

1450

70

49

250 WQ 600-9-30

250

600

9

30

980

74

50

250 WQ 600-12-37

250

600

12

37

1450

78

51

250 WQ 600-15-55

250

600

15

55

1450

75

52

250 WQ 600-20-55

250

600

20

55

1450

73

53

300 WQ 500-15-45

300

500

15

45

980

70

54

300 WQ 800-15-55

300

800

15

55

980

73

55

300 WQ 600-20-55

300

600

20

55

980

75

56

300 WQ 800-20-75

300

800

20

75

980

78

57

300 WQ 950-20-90

300

950

20

90

980

80

58

300 WQ 1000-25-110

300

1000

25

110

980

82

59

350 WQ 1100-10-55

350

1100

10

55

980

84.5

60

350 WQ 1500-15-90

350

1500

15

90

980

82.5

61

350 WQ 1200-18-90

350

1200

18

90

980

83.1

62

350 WQ 1100-28-132

350

1100

28

132

740

83.2

63

350 WQ 1000-36-160

350

1000

36

160

740

78.5

64

400 WQ 2000-15-132

400

2000

15

132

740

85.5

65

400 WQ 1700-22-160

400

1700

22

160

740

82.1

66

400 WQ 1500-26-160

400

1500

26

160

740

83.5

67

400 WQ 1700-30-200

400

1700

30

200

740

83.5

68

400 WQ 1800-32-250

400

1800

32

250

740

82.1

69

500 WQ 2500-10-110

500

2500

10

110

740

82

70

500 WQ 2600-15-160

500

2600

15

160

740

83

71

500 WQ 2400-22-220

500

2400

22

220

740

84

72

500 WQ 2600-24-250

500

2600

24

250

740

82


Troubleshooting:

Fault phenomenon

Cause analysis

Exclusion method

Insufficient traffic

Or no water will come out

1. Impeller rotation error

2. Is the valve open and intact

3. The pipeline is blocked

4. Low speed

5. Head too high

6. The density of the pumping medium is relatively high

7. High viscosity of the medium

8. Damaged sealing ring (at the mouth ring)

1. Adjust the rotation direction of the impeller

2. Check, repair, and eliminate

3. Clean up debris

4. Check electrical equipment and circuits

5. Change the pump or reduce the head

6. Dilute with water to reduce concentration

7. Reduce viscosity

8. Replace

Unstable operation

1. Unbalanced impeller

2. Bearing damage

1. Send to the manufacturer for replacement or calibration

2. Replace the impeller

The pump cannot start

1. Lack of phase

2. Impeller stuck

3. Winding, connector or cable open circuit

4. Stator winding burnt out

5. Electrical control malfunction

1. Check the circuit for repair

2. Remove debris

3. Use an ohmmeter to check and repair

4. Repair and replace the winding

5. Repair or replace

Excessive current

1. Low working voltage

2. Pipeline and impeller blockage

3. Transporting liquids that have passed or have high viscosity

4. Using a lift that is too high

1. Adjust the working voltage

2. Clean the pipeline and replace the winding

3. Change density or viscosity

4. Reduce traffic and increase traffic

Low insulation resistance

1. Leakage at the power supply terminal of the cable

2. Cable damage

3. Mechanical seal wear leads to leakage

4. Failure of each O-ring seal

5. The casing is corroded by the medium and leaks water

1. Tighten the compression nut

2. Replace

3. Replace

4. Replace

5. Repair


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