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ZW self-priming sewage pump
ZW self-priming pump is suitable for urban environmental protection, construction, fire protection, chemical industry, pharmaceutical industry, dye printing and dyeing, brewing, electricity, electroplating, papermaking, petroleum, mining, equipment cooling, tanker unloading and other fields. It is also suitable for clean water, seawater, water and chemical medium liquids with acid and alkalinity and slurry medium with general paste. The viscosity is ≤100 centipoise and the solid content can reach less than 30%. When equipped with a rocker arm nozzle, it can flush water into the air and scatter it into fine raindrops for spraying. It is a good machine for agricultural pesticides, nurseries, orchards and tea gardens.
ZW self-priming pump is an energy-saving pump product developed after absorbing, digesting and improving relevant technical data. The pump is a self-priming centrifugal pump, which has the advantages of compact structure, easy operation, stable operation, easy maintenance, high efficiency, long life, and strong self-priming ability. There is no need to install a bottom valve in the pipeline. Before working, it is only necessary to keep a quantitative lead liquid in the pump body, thus simplifying the pipeline system and improving working conditions.
In addition, ZW self-priming pump is also used in factories to transport various liquids. It has many advantages, such as easy operation and high efficiency, which can bring great economic benefits to the factory. Such a simple but efficient equipment can be used in many types of factories, such as chemical, food and textile factories, especially those where acid can be used frequently. This can effectively ensure the safety of workers while ensuring the completion of work, and even in public sewage projects. It is also widely used.
The ZW self-priming pump has a liquid storage chamber in the pump body, which is connected to the pump working chamber through the upper reflux hole and the lower circulation hole, forming an axial reflux external mixing system of the pump. After the pump stops working, a certain volume of liquid has been stored in the pump cavity. When the pump starts, the liquid in the pump is thrown upward with air under the action of the impeller, and the liquid flows back to the working chamber through the grid of the gas-liquid separation tube. The gas is discharged from the pump body, so that a certain vacuum is formed in the pump to achieve the effect of self-priming. The ZW self-priming pump has a direct-connected structure, and the pump shaft and the motor shaft are the same axis. This structure can make the pump run more smoothly during use. The sewage self-priming pump integrates self-priming and non-blocking sewage discharge. It adopts axial reflux external mixing. Through the design of the pump body and impeller flow channel, it can absorb and discharge liquids containing large solid particles and long fiber impurities without installing a bottom valve and filling water like a general self-priming clean water pump.
The self-priming height of the ZW self-priming pump is related to factors such as the seal gap before the impeller, the number of revolutions of the pump, and the liquid level height of the separation chamber. The smaller the seal gap before the impeller, the greater the self-priming height, which is generally taken as 0.3~0.5 mm; when the gap increases, in addition to the decrease in self-priming height, the head and efficiency of the pump are reduced. The self-priming height of the pump increases with the increase of the circumferential speed u2 of the impeller, but when it reaches the maximum self-priming height, the self-priming height no longer increases with the increase in the number of revolutions, and at this time it only shortens the self-priming time; when the number of revolutions decreases, the self-priming height decreases. Under the condition that other conditions remain unchanged, the self-priming height also increases with the increase of the water storage height (but it cannot exceed the optimal water storage height of the separation chamber). In order to better mix the air and water in the self-priming pump, the impeller blades must be fewer, so that the pitch of the blade grid is increased; and it is advisable to use a semi-open impeller (or an impeller with a wider impeller groove), which is more convenient for the return water to be deeply injected into the impeller blade grid.
- Instructions for using ZW self-priming pump:
1. We need to carefully check the bolts on the self-priming pump to see if there are any loose parts, and whether the power supply and wires of the self-priming pump are damaged. It should be noted that the insulation resistance of the motor should be greater than two megohms.
2. The ZW self-priming pump must be installed with leakage or electric shock protectors, etc., and must be safely grounded to ensure that dangerous accidents of electric shock are eliminated.
3. It should be noted that the voltage of the self-priming pump itself should be used within the specified range. If it exceeds the range of use, the service life of the self-priming pump will be shortened or burnt out.
4. Turn off the power switch and let the self-priming pump rotate for about two minutes, and then see if the operation of the self-priming pump is normal.
5. Fix the self-priming pump and connect the water inlet and the bottom valve of the self-priming pump with a harder pipe.
6. When the ZW self-priming pump is used for the first time, fill the water tank of the self-priming pump with water until it will discharge water after power-on and more than ten seconds. In this way, it is no longer necessary to fill water when used in the future.
- ZW self-priming pump performance parameters
|
No |
Type |
Caliber （mm） |
Capacity |
Lift （m） |
Motor power (KW) |
|
1 |
25ZW-8-15 |
25 |
8 |
15 |
1.5 |
|
2 |
32ZW-10-20 |
32 |
10 |
20 |
2.2 |
|
3 |
32ZW-20-12 |
32 |
20 |
12 |
2.2 |
|
4 |
40ZW-20-12 |
40 |
20 |
12 |
2.2 |
|
5 |
40ZW-10-20 |
40 |
10 |
20 |
2.2 |
|
6 |
40ZW-15-30 |
40 |
15 |
30 |
3 |
|
7 |
50ZW-10-20 |
50 |
10 |
20 |
2.2 |
|
8 |
50ZW-20-12 |
50 |
20 |
12 |
2.2 |
|
9 |
50ZW-15-30 |
50 |
15 |
30 |
3 |
|
10 |
65ZW-30-18 |
65 |
30 |
18 |
4 |
|
11 |
65ZW-20-30 |
65 |
20 |
30 |
5.5 |
|
12 |
65ZW-15-30 |
65 |
15 |
30 |
3 |
|
13 |
65ZW-20-14 |
65 |
20 |
14 |
2.2 |
|
14 |
65ZW-25-40 |
65 |
25 |
40 |
7.5 |
|
15 |
65ZW-30-50 |
65 |
30 |
50 |
11 |
|
16 |
80ZW-40-16 |
80 |
40 |
16 |
4 |
|
17 |
80ZW-40-50 |
80 |
40 |
50 |
18.5 |
|
18 |
80ZW-65-25 |
80 |
65 |
25 |
7.5 |
|
19 |
80ZW-80-35 |
80 |
80 |
35 |
15 |
|
20 |
80ZW-50-60 |
80 |
50 |
60 |
22 |
|
21 |
100ZW-100-15 |
100 |
100 |
15 |
7.5 |
|
22 |
100ZW-80-20 |
100 |
80 |
20 |
7.5 |
|
23 |
100ZW-100-20 |
100 |
100 |
20 |
11 |
|
24 |
100ZW-100-30 |
100 |
100 |
30 |
22 |
|
25 |
100ZW-80-60 |
100 |
80 |
60 |
37 |
|
26 |
100ZW-80-80 |
100 |
80 |
80 |
45 |
|
27 |
125ZW-120-20 |
125 |
120 |
20 |
15 |
|
28 |
125ZW-200-15 |
125 |
200 |
15 |
15 |
|
29 |
150ZW-200-15 |
150 |
200 |
15 |
15 |
|
30 |
150ZW-250-25 |
150 |
250 |
25 |
45 |
|
31 |
200ZW-280-14 |
200 |
280 |
14 |
22 |
|
32 |
200ZW-300-18 |
200 |
300 |
18 |
37 |
|
33 |
200ZW-280-28 |
200 |
280 |
28 |
55 |
|
34 |
250ZW-420-20 |
250 |
420 |
20 |
55 |
|
35 |
300ZW-800-14 |
300 |
800 |
14 |
55 |
- ZW self-priming pump structure diagram:
1. Inlet short pipe 2. Inlet one-way valve 3. Inlet valve seat 4. Water filling valve 5. Outlet pipe 6. Pump body
7. Gas-liquid separator 8. Back cover 9. Impeller 10. Mechanical seal 11. Water retaining ring 12. Bearing seat
13. Pump shaft 14. Bearing cover 15. Bottom cover plate 16. Bolts
Cooperation Process
Requirement Communication
- After initial contact, the client manager will conduct a detailed needs analysis, collecting information on pump usage environment, flow rate, pressure, etc. The technical team will then develop a preliminary solution and provide detailed product information and recommendations.
Technical Selection
- After detailed product recommendations and technical consultations, the client confirms the selection. We will provide a quotation and contract to ensure that technical and business terms are clear.
Workshop Production
- After signing the contract, we will formulate and execute a production plan to ensure product quality and progress, while the client can track the production status in real-time.
Factory Testing
- Upon completion of production, we conduct comprehensive quality testing and provide detailed test reports and certificates to ensure the products meet standards and client requirements.
Installation and Commissioning
- We offer on-site installation, commissioning, and training services to ensure optimal pump performance and that clients can operate and maintain the equipment correctly.
After-Sales Support
- We provide 24-hour customer service and maintenance and warranty services to ensure timely resolution of issues, and regularly inspect equipment to maintain long-term stable operation.
Continuous Improvement
- Collect customer feedback to continuously optimize product and service quality. We adapt to market changes and client needs by continually improving and upgrading products to maintain industry leadership.
Client Service
and Technical Support
Customer Support
We provide 24-hour hotline and online support to ensure that customers receive timely technical support and problem solutions via phone, email, or online platforms.
After-Sales Service Description
We provide technical support and local repair advice to help customers resolve issues encountered with product use.
Technical Consultation
We offer detailed product manuals and technical documentation, and assist customers in resolving technical issues through remote diagnostics and technical guidance.
Quality Assurance
We provide technical support and maintenance advice to help customers address faults caused by product quality issues and offer appropriate solutions based on fault information and purchase proof.
After-Sales Assurance
We offer warranty services to ensure repair or replacement of products with quality issues during the warranty period and encourage customers to provide feedback to help us improve products and services.
Service Commitment
We commit to responding to customer issues within 24 hours and continuously improving service processes and measures to ensure the best customer experience.
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