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Your present location: Huiming Fluid >> Products >> Centrifugal Pump >> DL Series Vertical Multistage Centrifugal Pump
Pump Catalog

DL series vertical multistage centrifugal pump

DL series vertical multistage centrifugal pump
Submit Order Online Sales Hotline: 021-66620000 Inquiry Fax: 021-551685787

product name: DL series vertical multistage centrifugal pump
Caliber (import / export): φ40-φ250
flow: 4.2-504 (m3 / h)
Head: 24-240 (m)

Product Overview:
DL vertical multi-stage centrifugal pump is a hydraulic model of the IS-type pump recommended by the state for use in energy-efficient products. The screw clamps the water inlet section, the middle section and the water outlet section together. Each stage of the pump is equipped with an impeller and a guide vane. The axial force is solved by hydraulic balance method. The residual axial force is borne by the ball bearing and lubricated with grease. The shaft seal adopts soft packing or mechanical seal. The product implements the JB / T2727-93 "Vertical Multistage Centrifugal Pump Types and Basic Parameters" standard, which is mainly used to suck diluted, clean, non-corrosive, non-explosive clear water and solid particles with similar physical and chemical properties to water Or fibrous liquid.
All of our company's centrifugal pumps are designed and optimized by computer. Our company has strong technical force, rich production experience and perfect testing methods to ensure the stability and reliability of product quality.

Scope of application:
Widely used in high-rise buildings for fire protection, domestic water supply, air-conditioning unit circulation, cooling water delivery.

Product features:
1. Advanced hydraulic model: high efficiency and wide range of performance.
2. Novel structure and reliable operation: The balance drum has been eliminated, and its axial force is hydraulically balanced, which completely solves the problems that the balance drum is susceptible to corrosion, seizure and wear, ensuring more reliable operation.
3. Fewer operating and maintenance costs: The use of high-quality mechanical seals, wear resistance, no leakage, long service life, low failure rate, and less operating and maintenance costs.
4. Stable operation and low noise: Low-speed motor is used to make the pump run smoothly and the noise is lower.
5, vertical structure, small footprint.

Technical parameters:
Flow: 4.2-504m3 / h;
Head: 24-240m;
Power: 1.5-450kw;
Speed: 1480r / min;
Caliber: φ40-φ250;
Temperature range: 0- + 90 ℃;
Working pressure: ≤2.4Mpa.

Five, model meaning:

6. Faults and troubleshooting:

Nostalgia
Possible cause
Solution
The pump does not suck the pressure gauge and vacuum gauge pointers
1. Insufficient water perfusion
2. Air leakage at the connection between the pipeline and the instrument
3.Suction is too high
1. Check if the foot valve is leaking.
2. Tighten the leak
3. Reduce water absorption height
Pump does not absorb water, vacuum gauge indicates high vacuum
1. Foot valve is not open or blocked
2. The suction pipe resistance is too large
3. Filter is clogged
1. Check the foot valve
2. Replace the water absorption
3.Clean the filter
Pressure gauge is under pressure but still does not produce water
1. Outlet pipe resistance is too large
2. Wrong direction of rotation
3. The outlet pipe valve is not open
4. Impeller blocked
1. Check or pinch the short water pipe
2. Check the motor.
3. Open the outlet valve
4. Remove dirt from the impeller
Design flow
1. There is air inhalation
2. As the water level drops. The submersion depth is not enough,
3. Foreign bodies are blocked in the impeller
4.Severe wear of the rotor
1. Check for leaks and eliminate
2. Extend the suction pipe. Deepen the submergence depth
3.Remove and remove foreign matter
4. Replace seal is broken
Pump consumes too much power
1. The packing is pressed too tightly.
2. Excessive flow
3. There is friction between the rotating body and the shell
4. Pump bearing wear
5.Bent pump shaft
Proper relaxation
2.Close the small gate valve opening
3. Trim
4. Replace the bearing
5. Replace or correct
Increased pump vibration
1. The impeller is partially blocked
2. Impeller is broken
3. The flow is too small
4. The pump shaft is not concentric with the motor
5.Bearing damage
6. Mixed with air. Cavitation occurs
1. Remove and remove foreign objects
2. change
3.Slightly tap the outlet valve
4. Pinpointing
5. change
6. Change the suction position. Improve the suction pipe

Performance parameters:

Type
level
number
caliber
(mm)
flow
(m3 / h)
Head
(m)
power
(kw)
Rotating speed
(r / min)
Cavitation allowance
(m)
40DL (DLR) 6-12
2
40
6.2
twenty four
1.5
1480
3.2
3
36
2.2
4
48
3
5
60
4
6
72
4
7
84
5.5
8
96
5.5
9
108
7.5
10
120
7.5
11
132
7.5
12
144
11
50DL (DLR) 12.5-12.5
2
50
12.6
25
3
1480
2.2
3
3.75
3
4
50
4
5
62.5
5.5
6
75
7.5
7
87.5
7.5
8
100
7.5
9
112.5
11
10
125
11
65DL (DLR) 30-15
2
65
30
30
5.5
1480
2.82
3
45
7.5
4
60
11
5
75
15
6
90
15
7
105
18.5
8
120
twenty two
9
135
twenty two
10
150
30
80DL (DLR) 50-20
2
80
50
40
11
1480
2.2
3
60
15
4
80
twenty two
5
100
30
6
120
3.
7
140
37
8
160
45
9
180
45
10
200
55
100DL (DLR) 72-20
2
100
72
40
15
1480
2.8
3
60
18.5
4
80
30
5
100
37
6
120
37
7
140
45
8
160
55
9
180
55
10
200
75
100DL (DLR) 100-20
2
100
100
40
18.5
1480
2.8
3
60
30
4
80
37
5
100
45
6
120
55
7
140
75
8
160
75
9
180
90
10
200
90
125DL (DLR) 125-20
2
125
125
40
twenty two
1480
2.8
3
60
30
4
80
45
5
100
55
6
120
75
7
140
75
8
160
90
9
180
110
10
200
132
150DL (DLR) 150-20
2
150
150
40
30
1480
2.8
3
60
37
4
80
45
5
100
55
6
120
75
7
140
90
8
160
90
9
180
110
10
200
132
150DL (DLR) 160-20
2
150
160
50
37
1480
3.5
3
75
55
4
100
75
5
125
90
6
150
110
7
175
132
8
200
132
9
225
160
10
250
160
3
60
55
4
80
73
5
100
90
6
120
110
7
140
110
8
160
132

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