liquid ring vacuum pump of  vacuum dewatering 

Vacuum dewatering is widely used in dewatering of pulverized coal, mineral powder, pulp, alkali, dyes, rubber and cement. Coal Washery in coal industry uses liquid ring vacuum pump and filter to suck water in the slurry water, so as to get dry slurry (filter cake), which is the most typical and widespread example in the application of liquid ring vacuum dewatering. Vacuum dewatering in paper mills is also a typical case of vacuum dewatering. Its main principle is vacuum dewatering of pulp by liquid ring vacuum pump.

liquid ring vacuum pump of  vacuum dewatering 

2BE1 Series Liquid Ring Vacuum Pump

Model Speed(Driving mode) Shaft power Motor power Ultimatevacuum Max. capacity Weight (excl.motor)
r/min KW 380V hpa M³/hr M³/min kg
2BE1-102 1450 (direct)1750 (V-belt) 6.08.0 Y132M-4-7.5Y160M-4-11 33hpa(-0.097MPa) 246290 4.14.8 110
2BE1-103 1450 (direct)1750 (V-belt) 8.211.1 Y160M-4-11Y160L-4-15 33hpa(-0.097MPa) 340412 5.76.9 125
2BE1-152 1450 (direct)1625 (V-belt)

1750 (V-belt)

12.515.0

17.2

Y160L-4-15Y180M-4-18.5

Y180L-4-22

33hpa(-0.097MPa) 450510

535

7.58.5

8.9

175
2BE1-153 1450 (direct)1100 (V-belt)

1300 (V-belt)

1620 (V-belt)

1750 (V-belt)

16.310.6

13.4

19.6

22.3

Y180M-4-18.5Y160L-4-15

Y180M-4-18.5

Y180L-4-22

Y200L-4-30

33hpa(-0.097MPa) 600445

535

648

700

10.07.4

8.9

10.8

11.7

200
2BE1-202 980 (direct)790 (V-belt)

880 (V-belt)

1100 (V-belt)

1170 (V-belt)

1300 (V-belt)

18.213.4

16.3

23.8

25.7

30

Y200L2-6-22Y180M-4-18.5

Y180M-4-18.5

Y200L-4-30

Y200L-4-30

Y225S-4-37

33hpa(-0.097MPa) 750590

670

860

888

950

12.59.8

11.2

14.3

14.8

15.8

460
2BE1-203 980 (direct)790 (V-belt)

880 (V-belt)

1100 (V-belt)

1170 (V-belt)

1300 (V-belt)

29.521.2

24.8

34

38

42

Y250M-6-37Y200L-4-30

Y200L-4-30

Y225M-4-45

Y225M-4-45

Y250M-4-55

33hpa(-0.097MPa) 1080870

980

1210

1320

1390

1814.5

16.3

20.2

22.0

23.2

530
2BE1-252 740 (direct)565 (V-belt)

660 (V-belt)

830 (V-belt)

885 (V-belt)

938 (V-belt)

3823.7

31.8

45

54

60

Y280M-8-45Y200L-4-30

Y225S-4-37

Y250M-4-55

Y280S-4-75

Y280S-4-75

33hpa(-0.097MPa) 17001200

1500

1770

2000

2100

28.320.0

25.0

29.5

33.3

35.0

870
2BE1-253 740 (direct)565 (V-belt)

660 (V-belt)

740 (V-belt)

792 (V-belt)

820 (V-belt)

880 (V-belt)

940 (V-belt)

5437.2

45

50.8

60

68

75.1

88

Y315M-8-75Y225M-4-45

Y250M-4-55

Y280S-4-75

Y280S-4-75

Y280M-4-75

Y280M-4-90

Y315S-4-110

33hpa(-0.097MPa) 24501690

2100

2340

2560

2640

2780

3050

40.828.2

35

39

42.7

44

46.3

50.8

930
2BE1-303 740 (direct)590 (direct)

466 (V-belt)

530 (V-belt)

583 (V-belt)

660 (V-belt)

740 (V-belt)

9865.5

48

58

64

79.8

96

Y315L2-8-110Y315L2-10-75

Y250M-4-55

Y280S-4-75

Y280S-4-75

Y280M-4-90

Y315S-4-110

33hpa(-0.097MPa) 40003200

2520

2820

3100

3550

3840

66.753.3

42

47

51.7

59.2

64

1700
2BE1-305 740 (direct)590 (direct)

490 (V-belt)

530 (V-belt)

583 (V-belt)

660 (V-belt)

740 (V-belt)

10870

55

61

68

90

110

Y355M1-8-132Y355M1-10-90

Y280S-4-75

Y280S-4-75

Y280M-4-90

Y315S-4-110

Y315M-4-132

33hpa(-0.097MPa) 45203750

3150

3380

3700

4090

4550

75.362.5

52.5

56.4

61.2

68.1

75.8

1820
2BE1-353 590 (direct)390 (V-belt)

425 (V-belt)

464 (V-belt)

530 (V-belt)

560 (V-belt)

620 (V-belt)

660 (V-belt)

12163

72

85

95

110

133

152

Y355L2-10-160Y280S-4-75

Y280M-4-90

Y315S-4-110

Y315M-4-110

Y315L1-4-132

Y315L1-4-160

Y315L2-4-185

33hpa(-0.097MPa) 53003580

3700

4100

4620

5000

5500

5850

88.359.7

61.7

68.3

77.0

83.3

91.7

97.5

2300
2BE1-355 590 (direct)390 (V-belt)

420 (V-belt)

464 (V-belt)

523 (V-belt)

590 (V-belt)

660 (V-belt)

13675

80.8

95

113

136

182

Y355L2-10-160Y280M-4-90

Y280-4-90

Y315S-4-110

Y315M-4-132

Y315L1-4-160

Y315L2-4-200

33hpa(-0.097MPa) 57004180

4260

4850

5230

6000

6510

9569.7

71

80.8

87.1

100

108

2450
2BE1-403 330 (V-belt)372 (V-belt)

420 (V-belt)

472 (V-belt)

530 (V-belt)

98110

131

160

213

Y315M-4-132Y315M-4-132

Y315L1-4-160

Y315L2-4-200

Y355M2-4-250

33hpa(-0.097MPa) 48605400 6470

7380

8100

8190

107.8

123.0

135.0

3750
2BE1-405 330 (V-belt)372 (V-belt)

420 (V-belt)

472 (V-belt)

530 (V-belt)

100118

140

170

216

Y315M-4-132Y315L1-4-160

Y315L2-4-185

Y315L2-4-200

Y355M2-4-250

33hpa(-0.097MPa) 60006700

7500

8350

9450

100.0111.7

125.0

139.2

157.5

3900

 

Before dehydration, open the cover of the water tank of the liquid ring vacuum pump unit and inject clean water into the vacuum chamber and catchment chamber to make the water surface level or slightly higher than the nozzle of the tank, adjust the buckle tightly, cover the lid tightly, block the water intake with 3-4 mm thick rubber plate, check the vacuum degree of the empty load of the pump, and the pump table should be greater than 650-700 mm Hg. In addition, it is necessary to check the availability of binders and repair supplies as well as commonly used repair tools.

Opening ring vacuum pump suction, generally control vacuum table 1 minute gradually extended to 400 ~ 500 mmHg, the highest value should not be greater than 650 ~ 700 mmHg. If the required vacuum can not be met within the specified time (3 minutes), the leak should be found immediately to remedy. If the sealing belt is used, some water can be slightly poured to wet the sealing edge, and then gently sweep it. If it still does not work, measures such as repair or replacement should be taken. In the process of vacuum treatment, the vacuum degree, dehydration time and dehydration amount should be recorded carefully, and the water flow in the air cushion film should be observed everywhere. If the local water movement is not smooth, the adjacent sealing edge can be raised at short intervals to infiltrate a small amount of air and promote the water movement in the surface layer of concrete. When the dehydration reaches the required time (dehydration time is generally 1-1.5 times of the thickness of the plate (cm), unit min) or the required amount of water has been removed (dehydration rate is generally 12%-15%), slightly lift 1-2 cm around the suction pad and continue to suck 10-15S to remove the remaining water from the working surface and pipeline.

Roll up the suction pad, move to the next working surface and continue vacuum dehydration. The position of each suction pad should be overlapped with the previous 20 cm to prevent leakage and suction, resulting in uneven distribution of water content.

Vacuum dehydration of liquid ring vacuum pump should pay attention to the following matters:

The operation depth of vacuum dewatering should not exceed 30 cm and the water cement ratio of mixture should not exceed 0.55.

When purchasing filter cloth and suction pad, the appropriate size should be selected according to the size of concrete pavement plate. Too large or too small will affect the dehydration effect.

Vacuum operators must stand on self-made “work bridge” and not walk on suction pads at will. Do not wear shoes with hard soles and nails. It is better to wear rubber shoes or sneakers.

When dewatering, we should make a good record, grasp the uniformity of dewatering time, and prevent concrete from “spring layer” and cracks.

When the suction pad is stored or moved, contact with hard objects with sharp corners should be avoided. When rolling up or laying down the suction pad, you should hold the support stick in your hand. In order to avoid damage to the suction pad. After the construction of each shift, the suction pad should be washed clean, and the sediment of the vacuum pump box should be flushed out to drain the stored water.

Joint treatment: Joint slab is not used in construction joints, but only seam slab is placed on top of concrete slab. After the concrete is solidified, the expansion joints and construction joints are pulled out in time, and then filled with filling materials. The construction of shrinkage joint adopts the method of cutting joint. That is to say, when the concrete reaches 50-70% of the designed strength, it is cut into joints with a slitting machine and the width of the joints is 3-5 mm.

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