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Shanghai Bihu Pump Manufacturing Co., Ltd

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Chongnan Road Lane, Xiaokunshan Town, Songshan District, Shanghai

ZW type stainless steel self-priming sewage pump | self-priming sewage pump

NegotiableUpdate on 05/13

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

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Overview

The ZW self-priming sewage pump was successfully developed by our engineering and technical personnel by absorbing foreign technology and combining it with the actual situation of China's electromechanical industry. This pump has a novel structure of impeller and pump body, which not only eliminates the need for a bottom valve like a typical self-priming pump, but also allows for larger particles and longer fibers, making it have a broad application market and development prospects.

Product Details

sewage pumpSelf priming sewage pump, unobstructed sewage pump, submersible sewage pump, submersible sewage pump, self-priming sewage pump

ZW type self-priming sewage pump, also known as solid-liquid pump or impurity pump. The hydraulic design of this series of pumps is that the impeller is enclosed in a separate impeller chamber, which is connected to a pressurized water chamber. When the impeller rotates, the liquid inside the pump generates a strong axial vortex, creating a vacuum at the inlet and a head at the outlet. Therefore, impurities can be discharged from the pressure chamber, so its flow channel is unobstructed, and its discharge effect is the same as other self-priming discharge pumps. The ZW self-priming vortex produced by our unit does not blocksewage pumpThe machine, like a typical self-priming water pump, does not require the installation of a bottom valve and can also suction and discharge large solid particles, long fibers, sediment, waste impurities, feces treatment, and all engineering wastewater. It can be widely applied to industries such as municipal sewage engineering, light industry, papermaking, textile, food, chemical industry, electric power, petroleum, mining, and river pond aquaculture. It is currently an impurity pump for pumping solid particles, fibers, slurries, and mixed suspensions in China. Performance range Flow rate Q: 8-800 m3/h Caliber DN: 25-300mm Head H: 15-80m Speed N: 2900-1450r/min Motor power: 1.5-55kw

ZW type self-priming non clogging sewage pump is a new type of pump developed by our company based on the structure and performance of ZX type self-priming centrifugal pump and QW type submersible sewage pump, and drawing on the advantages of similar foreign products, which integrates self-priming and sewage discharge. It can be used as a general self-priming pump for clean water without the need for a bottom valve or water injection. It can also suck up 60% of the large solid particles with a diameter of the outlet diameter and 1.5 times the fiber length of the impeller diameter, including dirt, sediment, waste ore impurities, feces treatment, and all engineering wastewater and gelatinous liquids. It reduces the labor intensity of human labor, is easy to install and use, requires minimal maintenance, and achieves good performance. It has a broad application market and development prospects
All of our products are designed and optimized using computers. Our company has strong technical strength, rich production experience, and advanced testing methods to ensure stable and reliable product quality.

IISelf suction unobstructed sewage pumpScope of application:
Suitable for industries such as chemical, petroleum, pharmaceutical, mining, papermaking, fiber, pulp, textile, food, power plants, municipal sewage engineering, public facility sewage, and river pond aquaculture.

1. Environmental temperature ≤ 50 ℃, medium temperature ≤ 80 ℃. Special requirements can reach 200 ℃

2. The pH value of the medium is 6-9 for cast iron and 2-13 for stainless steel

3. The medium density shall not exceed 1240 kg/m3

4. The self-priming height should not exceed the specified value of 4.5-5.5 meters, and the length of the suction pipe should be ≤ 10 meters.

5. The suspended particle diameter is 60% of the pump diameter and the fiber length is 5 times the pump diameter.

IIISelf suction unobstructed sewage pumpProduct advantages:
1. Strong sewage discharge capacity: The special impeller anti blocking design ensures that the pump is efficient and unobstructed.
2. Efficient and energy-saving: Adopting excellent hydraulic models, the efficiency is 3-5% higher than that of general self-priming pumps.
3. Good self-priming performance: The self-priming height is 1 meter higher than that of a typical self-priming pump, and the self-priming time is shorter.

4Self suction unobstructed sewage pumpTechnical Specifications:
Flow rate: 5-800m3/h;
Head: 12-60m;
Motor power: 2.2-55KW;
Speed: 1450-2900r/min;
Caliber: 25-300;
Medium temperature: ≤ 100 ℃;
Self suction height: 4.5-6.0m.

5Self suction unobstructed sewage pumpModel meaning:

6、 Performance parameters:

Model number	Caliber (mm)		Traffic (m)³/h)	Head (m)	power (kw)	speed (r/min)	Self suction time (min/5m)	efficiency (%)	Net Positive Suction Head (NPSH) (m)	Head (m) scope of application	weight (kg)
Model number	Import	Export	Traffic (m)³/h)	Head (m)	power (kw)	speed (r/min)	Self suction time (min/5m)	efficiency (%)	Net Positive Suction Head (NPSH) (m)	Head (m) scope of application	weight (kg)
25ZW8-15	25	25	8	15	1.5	2900	3	45	2.0	10-15	100
25ZW8-30	25	25	8	30	3	2900	3	45	2.0	24-30	120
32ZW5-20	32	32	5	20	2.2	2900	3	45	2.5	15-20	100
32ZW10-20	32	32	10	20	2.2	2900	3	45	2.5	15-20	100
32ZW9-30	32	32	9	30	3	2900	3	48	2.5	24-30	120
40ZW10-20	40	40	10	30	2.2	2900	3	45	2.5	15-20	100
40ZW20-15	40	40	20	15	2.2	2900	3	45	2.5	10-18	100
40ZW15-30	40	40	15	30	3	2900	3	48	2.5	24-30	120
50ZW10-20	50	50	10	20	2.2	2900	3	45	2.5	15-20	100
50ZW20-12	50	50	20	12	2.2	2900	3	45	2.5	10-18	100
50ZW18-20	50	50	18	20	3	2900	3	45	2.5	18-22	120
50ZW15-30	50	50	15	30	3	2900	3	48	2.5	24-30	120
50ZW20-35	50	50	20	35	5.5	2900	3	48	2.5	25-35	150
50ZW25-30	50	50	25	30	5.5	2900	3	48	2.5	25-30	150
50ZW20-40	50	50	20	40	7.5	2900	3	48	2.5	32-40	200
50ZW20-50	50	50	20	50	11	2900	3	48	2.5	40-50	250
65ZW30-18	65	65	30	18	4	2900	3	45	2.5	13-18	160
65ZW30-18	65	65	30	18	4	1450	3	45	2.5	13-18	200
65ZW25-30	65	65	25	30	5.5	2900	3	50	3.0	25-30	200
65ZW25-40	65	65	25	40	7.5	2900	3	50	3.0	32-40	200
65ZW40-25	65	65	40	25	7.5	2900	3	50	3.0	20-25	200
65ZW50-30	65	65	50	30	7.5	2900	3	50	3.0	25-30	200
65ZW65-25	65	65	65	25	7.5	2900	3	52	3.0	20-25	200
65ZW25-50	65	65	25	50	11	2900	3	53	3.0	40-50	280
80ZW40-16	80	65	40	16	4	2900	3	50	3.0	13-18	180
80ZW40-16	80	65	40	16	4	1450	3	50	3.0	13-18	200
80ZW50-20	80	65	50	20	5.5	1450	3	50	3.0	13-20	240
80ZW40-25	80	65	40	25	7.5	2900	2	50	3.0	20-25	200
80ZW25-40	80	65	25	40	7.5	2900	2	50	3.0	32-40	200
80ZW65-25	80	65	65	25	7.5	2900	2	52	3.0	20-25	240
80ZW80-20	80	65	80	20	7.5	1450	3	52	3.0	10-20	240
80ZW80-35	80	65	80	35	15	2900	3	45	3.0	30-35	285
80ZW40-50	80	65	40	50	18.5	2900	2	50	3.0	40-50	293
80ZW50-60	80	65	50	60	22	2900	3	55	3.0	48-60	326
100ZW100-15	100	80	100	15	7.5	1450	3	50	4.0	10-15	300
100ZW80-20	100	80	80	20	7.5	1450	3	53	4.0	10-20	300
100ZW100-20	100	80	100	20	11	1450	3	53	4.0	12-20	340
100ZW100-30	100	80	100	30	22	2900	2	53	4.0	25-30	510
100ZW80-45	100	80	80	45	30	2900	2	55	4.0	35-45	560
100ZW80-60	100	80	80	60	45	2900	2	53	4.0	50-60	585
125ZW120-20	125	125	120	20	15	1450	2	55	4.0	8-15	500
150ZW180-14	150	125	180	14	15	1450	3.5	60	5.0	8-14	500
150ZW150-20	150	125	150	20	15	1450	3.5	60	5.0	8-15	500
150ZW200-15	150	125	200	15	18.5	1450	3.5	60	5.0	8-15	550
150ZW200-20	150	125	200	20	22	1450	3	60	5.0	10-20	570
150ZW180-20	150	125	180	20	22	1450	3	60	5.0	10-20	570
150ZW160-30	150	125	160	30	30	1450	3	65	5.0	20-30	680
150ZW180-30	150	125	180	30	37	1450	3	65	5.0	20-30	700
150ZW180-38	150	125	180	38	55	1450	3.5	45	5.0	30-38	800
150ZW150-45	150	125	150	45	55	1450	3.5	45	5.0	35-45	800
200ZW280-14	200	150	280	14	22	1450	3	65	5.0	8-14	820
200ZW280-20	200	150	280	20	37	1450	3	62	5.0	10-20	910
200ZW300-20	200	150	300	20	45	1450	3	59	5.0	15-25	948
200ZW280-28	200	150	280	28	55	1450	3	55	4.8	18-28	1090
250ZW420-20	250	200	420	20	55	1450	2.5	61	6.0	12-20	1150
300ZW800-14	300	250	800	14	55	1450	2.5	65	6.0	8-14	1400

7、 Malfunctions and troubleshooting

Fault

Reason

exclusion method

The pump is not producing water

1. No or insufficient fluid storage in the pump body

2. Air leakage in the suction pipeline

3. Low voltage

4. The suction stroke is too high or the suction pipeline is too long

5. Excessive mechanical seal leakage

1.加足

2. Eliminate the phenomenon of pipeline leakage

3. Adjust the voltage

4. Reduce suction or shorten the pipeline

5. Repair or replace

Insufficient pump water output

1. Due to improper use, the impeller passage or suction pipe is blocked

2. Severe impeller wear

3. Insufficient power and low speed

1. Eliminate blockages

2. Replace the impeller

3. Adjust the speed to the rated speed

Excessive pump noise and vibration

1. Unstable footing,

2. Severe bearing wear

3. The pump and motor spindle have different axes

1. Reinforcement

2. Replace the bearings

3. Adjust coaxiality

The bearing temperature is too high

1. Deterioration or dryness of lubricating grease

2. Bearing damage

1. Replace the lubricating grease

2. Replace

Pump leakage

1. Loose connecting bolt

2. Sealing component grinding frequency

1. Secure tightly

2. Replace

9、 Structure and working principle

The ZW series self-priming non clogging sewage pump is mainly composed of a pump body Composed of impeller, rear cover, mechanical seal, pump shaft, bearing seat, inlet valve, gas-liquid separation pipe, water inlet valve, inlet and outlet pipes, etc. The structure of the pump is shown in the diagram.

The working principle of the pump: The pump body is equipped with a liquid storage chamber, which is connected to the pump working chamber through the upper reflux hole and the lower circulation hole, forming an axial reflux external hybrid system of the pump. After the pump stops working There is already a certain volume of liquid stored in the pump chamber. When the pump is started, the stored liquid inside the pump is ejected upwards with air under the action of the impeller The liquid flows back to the working chamber through the grid of the gas-liquid separation tube, and the gas is discharged outside the pump, creating a certain degree of vacuum inside the pump and achieving self-priming.

10、 ZW type self-priming unobstructed sewage pump (structural diagram)