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

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    Membrane

    Overview of the diaphragm: For the diaphragm in the mechanical industry: a sensitive elastic element in the form of a circular membrane. When the two faces of the diaphragm are subjected to different pressures (or forces), the diaphragm deforms and moves toward the side of lower pressure, causing its center to shift in a certain relation to the pressure difference. The main shapes of the diaphragm are flat diaphragm and vertical chain type diaphragm.

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    Product Description Product Specifications Why Choose Us? FAQ

    Overview of the membrane:

     

    　　For membranes in the mechanical industry: elastic sensitive element in the form of a circular membrane. When the two faces of the membrane are subjected to different pressures (or forces), the membrane deforms towards the side of lower pressure, generating a displacement in the center related to the pressure difference. The main types of membranes are flat membranes, vertical chain-type membranes, and corrugated membranes. Flat membranes can be classified into various forms depending on whether the edge is fixed or supported, whether the center has a hole, and the distribution of force in the membrane area; the most common is the flat membrane formed by a thin circular plate of constant section fixed at the edge.

    Classification of membrane uses:

     

    　　For membranes in the electroacoustic industry: their main function is to convert electric current into sound signals, like the speakers we know;

    　　For membranes in the filtration and insulation industry: they are actually composed of many microscopic nanopores that serve to separate related media, such as in air purification and water treatment;

    　　Membranes in the optical industry: they perform optical refraction and optical processing functions; such as common "solar panels", "sheets for sunglasses", and "anti-vandal sheets for cars", among others.

    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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