Changsha Zoomlian Pump Co., Ltd. 长沙中联泵业股份有限公司

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    ZW Type Self-Priming Non-Clogging Sewage Pump
    ZW Type Self-Priming Non-Clogging Sewage Pump
    ZW Type Self-Priming Non-Clogging Sewage Pump
    ZW Type Self-Priming Non-Clogging Sewage Pump
    ZW Type Self-Priming Non-Clogging Sewage Pump
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    • ZW Type Self-Priming Non-Clogging Sewage Pump
    • ZW Type Self-Priming Non-Clogging Sewage Pump
    • ZW Type Self-Priming Non-Clogging Sewage Pump
    • ZW Type Self-Priming Non-Clogging Sewage Pump
    • ZW Type Self-Priming Non-Clogging Sewage Pump

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    Sewage Pump

    Keywords:

    Pump

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    ZW Type Self-Priming Non-Clogging Sewage Pump

    Flow: 8-800m³/h

    Head: 12-60m

    Power: 2.2-55kw

    Efficiency: 45%-65%

    Pump Weight: 100-1400kg

    NPSH (Net Positive Suction Head): 2.0-6.0m

    Price: 31,000-31,700

     

    The ZW type non-clogging self-priming sewage pump is a newly developed, structurally innovative non-clogging sewage pump with self-priming function, successfully developed by Zhonglian Pump Industry, a sewage pump manufacturer, based on repeated research of similar domestic and foreign products. This pump integrates self-priming and non-clogging sewage discharge functions, also known as a solid-liquid pump or impurity pump. It does not require a foot valve like general self-priming pumps and can suction and discharge large solid blocks, long fibers, sediments, waste mineral impurities, fecal matter treatment, and all kinds of industrial waste.

    +86 0731-88192288

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    info@cipump.com

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    Product Description Product Specifications Why Choose Us? FAQ

    Product Overview

    　　The ZW type non-clogging self-priming sewage pump is a newly developed, innovatively structured non-clogging sewage pump with self-priming function, successfully created by Zhonglian Pump Industry after extensive research on similar domestic and international products. This pump integrates self-priming and non-clogging sewage discharge, adopts axial reflux design, and features a unique design of the pump body and impeller flow channel. It operates like a general self-priming clean water pump without the need for a foot valve or priming water, and can also suction and discharge large solid particles and long fiber impurities without clogging. The ZW self-priming sewage pump is also known as a solid-liquid pump or impurity pump. It can operate without a foot valve like a general self-priming pump and can handle large solid blocks, long fibers, sediment, waste mineral impurities, fecal treatment, and all kinds of engineering sewage. It is applied in municipal sewage projects, pond aquaculture fecal treatment, sediment waste mineral impurities, light industry, papermaking, food, chemical, pharmaceutical, electric power, pulp, and mixtures, making it an ideal impurity pump for chemical media.

    ZW Type Non-Clogging Self-Priming Sewage Pump

    　　Compared with similar domestic products, the ZW type self-priming sewage pump features a simple structure, excellent self-priming performance (self-priming height up to 5m), strong sewage discharge capacity, high efficiency and energy saving, and easy maintenance (can completely replace WQ and QW submersible sewage pumps). Its various indicators lead the domestic market and reach international advanced levels. It has broad application market development prospects.

    Product Parameters

    Application and Model Meaning of ZW Type Self-Priming Non-Clogging Sewage Pump:

    　　1. Ambient temperature ≤ 50℃, medium temperature ≤ 80℃, special requirements up to 200℃

    　　2. The pH value of the medium for ZW type self-priming sewage pump is 6-9 for cast iron material, and 2-13 for stainless steel.

    　　3. The medium density for ZW type self-priming sewage pump does not exceed 1240 kg/m³.

    　　4. The self-priming height of ZW type non-clogging sewage pump must not exceed the specified value of 4.5-5.5 meters, and the suction pipe length is ≤ 10 meters.

    　　5. The passing capacity of ZW type self-priming non-clogging sewage pump allows suspended particle diameter up to 60% of the pump diameter, and fiber length up to 5 times the pump diameter.

    Meaning of ZW Type Non-Clogging Sewage Pump Model

    ZW Type Self-Priming Non-Clogging Sewage Pump Structural Diagram and Working Principle:

    ZW Type Self-Priming Non-Clogging Sewage Pump Structural Diagram

    　　1 Inlet pipe, 2 Inlet flange, 3 Inlet valve seat, 4 Water filling valve, 5 Outlet pipe, 6 Pump body, 7 Gas-liquid separation pipe, 8 Rear cover, 9 Impeller, 10 Mechanical seal, 11 Water stop ring, 12 Bearing seat, 13 Pump shaft, 14 Bearing cover, 15 Bottom cover plate, 16 Bolt.

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

    　　Working principle of ZW type self-priming sewage pump: The pump body has a liquid storage chamber, which communicates with the pump working chamber through the upper return hole and lower circulation hole, forming an axial flow external mixing system. After the pump stops working, a certain volume of liquid is stored inside. When the pump starts, the stored liquid in the chamber is thrown upward by the impeller along with air. The liquid returns to the working chamber through the mesh of the gas-liquid separation pipe, and the gas is discharged outside the pump, creating a certain vacuum inside the pump to achieve self-priming.

     

    Features and Applications of ZW Type Self-Priming Non-Clogging Sewage Pump:

    　　1. The ZW type self-priming sewage pump adopts a double-blade impeller structure, greatly improving the ability to pass solids.

    　　2. The mechanical seal of ZW type non-clogging self-priming sewage pump uses a new type of friction pair and operates long-term inside the oil chamber.

    　　3. The overall structure is compact, small in size, low noise, energy-saving, easy to maintain, and convenient for users to replace parts.

    　　4. The automatic control cabinet can automatically control the pump's start and stop according to the required liquid level changes, requiring no dedicated personnel for monitoring, making it very convenient to use.

    　　5. Installation methods can be configured according to user needs, greatly facilitating installation and maintenance, so personnel do not need to enter the sewage pit.

    　　6. It can be used within the design range while ensuring the motor will not overload.

    　　7. When equipped with an outdoor motor, the ZW type non-clogging self-priming sewage pump does not require a pump room and can be directly installed outdoors, saving costs.

    　　The ZW type self-priming non-clogging sewage pump is suitable for discharging heavily polluted wastewater from factories and commercial areas, sewage pumping stations in main residential areas, urban sewage treatment plant water distribution systems, civil defense drainage stations, water supply equipment in water plants, sewage discharge in hospitals and hotels, municipal engineering construction sites, mining auxiliary machines, rural biogas pools, farmland irrigation, and other industries. It can transport sewage with particles and solids, and can also be used for clean water and weakly corrosive media.

     

    Operating Steps for ZW Type Self-Priming Non-Clogging Sewage Pump:

    　　1. Before use, check whether the pump rotation direction is correct and whether it rotates smoothly.

    　　2. Unscrew the liquid filling plug on top of the self-priming non-clogging sewage pump body, fill the storage chamber fully, then tighten the plug. After this, no need to add liquid before starting. Do not start the pump when the storage liquid is insufficient, otherwise the pump will not work properly and the mechanical seal may be damaged.

    　　3. When starting the self-priming sewage pump, first open the outlet flow control valve to facilitate the discharge of gas during the self-priming process. After starting, adjust the outlet flow control valve opening so that the pressure gauge reading points to the specified range (pressure control range table for various pump types). Avoid operating the pump at the lower limit of the specified range to prevent motor overload due to excessive shaft power or cavitation caused by excessive flow, which affects normal operation and causes strong vibration and noise.

    　　4. During operation, frequently check the temperature rise of the pump and motor. If abnormal noise or other unusual sounds are detected, stop the pump for inspection and only resume operation after troubleshooting.

    　　5. When stopping, first close the outlet flow control valve, then stop the pump to avoid insufficient liquid storage inside the pump body caused by siphoning.

    　　6. Regularly add oil and perform maintenance. If the pump is not used for a long time, disassemble, clean, oil, and store it properly.


     

    Kind Reminder: Please directly check the performance parameters on the pump selection page.

    Changsha Zhonglian Pump Industry Co., Ltd.

    Why Choose Us?

    Changsha Zhonglian Pump Industry Co., Ltd. was established in 1989, following the reform of the Changsha Water Pump Factory. It is a national high-tech comprehensive enterprise integrating design, research and development, manufacturing, and service. The company was listed on the Hunan Provincial Stock Exchange on December 31, 2019, with the abbreviated name "Zhonglian Pump Industry" and stock code: 600275HN. It is currently a key enterprise in China's centrifugal pump industry and one of the leading domestic manufacturers of multi-stage pumps, headquartered in Changsha, Hunan, a historical and cultural city in China.

    Changsha Zhonglian Pump Industry Co., Ltd.
    Changsha Zhonglian Pump Industry Co., Ltd.

    FAQ

    Q

    What products do you mainly produce?

    A

    Zoomlion Pump Industry manufactures various large industrial centrifugal pumps. The main products include: self-balancing multistage pumps, multistage centrifugal pumps, single-stage centrifugal pumps, split-case pumps, chemical pumps, submersible pumps, pipeline pumps, long-shaft pumps, condenser pumps, and more.

    Q

    Can you help me choose a model?

    A

    Of course! If the water pump model is not selected accurately, it can cause significant problems. After you take it back, it might be either too small to meet the usage requirements or too large, resulting in higher electricity and fuel costs, increasing the operating expenses.

    Q

    Why is the price quotation so slow?

    A

    Because centrifugal pumps are non-standard custom products with many models and a wide price range. Even for the same model, the price varies greatly depending on the materials and configurations used. Taking the most common pump accessory—the impeller—as an example, the price of a stainless steel impeller is several times that of a cast iron impeller. Therefore, we need to clearly confirm the relevant information to provide you with an accurate price. Normally, if you provide comprehensive information, we can quote within 5 minutes.

    Q

    What information should I provide when I need a quote?

    A

    Usually, if you want to get an accurate quote, it is recommended that you provide us with the following information: pump flow rate, head, on-site operating voltage, frequency, temperature of the conveyed liquid, pH value, solid particle content, on-site installation conditions (horizontal or vertical installation), and other related details. If you are not very familiar with these, it’s okay; our sales manager will assist you in determining them.

    Q

    Do you have centrifugal pumps in stock?

    A

    There are many models and configurations of centrifugal pumps. Except for a small number of commonly used standard models that are in stock, the vast majority of models and configurations are not stocked and are customized products. We need to first select the pump based on your site conditions such as flow rate, head, medium temperature, pH value, and installation conditions. After determining the pump model and configuration, we can then place an order with the workshop for production.

    Q

    What is your usual delivery time?

    A

    Models in stock can be shipped by the next day at the latest. Others are custom-made, and depending on the product size and specific project conditions, the delivery time is generally between 7-90 days. Please consult our sales manager for details: 0731-88632200 。

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