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

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    Variable pressure water supply equipment without negative pressure type box
    Variable pressure water supply equipment without negative pressure type box
    Variable pressure water supply equipment without negative pressure type box
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    • Variable pressure water supply equipment without negative pressure type box
    • Variable pressure water supply equipment without negative pressure type box
    • Variable pressure water supply equipment without negative pressure type box

    Category:

    Constant Pressure Water Supply Equipment

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    Pump

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    Variable pressure water supply equipment without negative pressure type box

    Flow: 0.4-1080m³/h 

    Lifting height: 6-305m 

    Price: 5.15-485,000 

     

    The negative pressure and variable frequency water supply equipment is another new water supply product independently developed by our company based on the negative pressure and variable frequency water supply equipment. It can use the municipal network pressure for water supply without negative pressure and variable frequency, and it can also draw water from the tank for constant pressure and variable frequency water supply, fully combining the advantages of constant pressure and variable frequency water supply equipment and negative pressure and variable frequency water supply equipment 

    +86 0731-88192288

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    info@cipump.com

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    Product Description Product Specifications Why Choose Us? FAQ

    Product description

    The variable pressure water supply equipment without negative pressure box type is another new water supply product independently developed by our company based on the variable pressure water supply equipment without negative pressure. It consists of five main parts: water tank, pump group, stable flow tank, intelligent pressure boosting and stabilization device, and central control system. The equipment can use the pressure of the municipal network for variable pressure water supply without negative pressure, and it can also draw water from the tank for constant variable pressure water supply, fully combining the advantages of constant variable pressure water supply equipment and without negative pressure. It uses air-cooled motor, air-cooled bearings, completely sealed and drip-proof, with a noise level of less than 50 decibels, preventing the small space of the water tank. It is a highly reliable variable pressure water supply equipment without negative pressure. The equipment also features powerful monitoring and remote communication (wireless) functions and a central control room for users (optional); friendly human-machine dialogue touch interface; fully intelligent control and remote maintenance service with early warning.

    Product parameters

    Advantages of the non-negative pressure water supply equipment with variable frequency box type:

           1. Sufficient water supply: the non-negative pressure box type water supply equipment can be connected in series with the municipal network, ensuring that no negative pressure is generated in the municipal network. During peak consumption, through microcomputer control and frequency regulation of the pump, the water pressure in the closed tank can be increased, avoiding insufficient water flow for users due to insufficient supply from the municipal network.

           2. Intelligent water supply: when the pressure of the public water supply network ≤0.2Mpa (freely adjustable between 0.2-0.4Mpa), the non-negative pressure device closes, the non-negative pressure inlet device opens, and the water supply is made from the tank; conversely, when the pressure of the public water supply network ≥0.2Mpa, after a delay of 10 minutes (adjustable time), the non-negative pressure device opens, the non-negative pressure inlet device closes, and the water supply is made from the public network.

           3. Clean water source and constant pressure: the water stored in the non-negative pressure tank circulates every 6 hours through intelligent control to ensure the freshness and cleanliness of the water. The variable frequency pump of the non-negative pressure box type water supply equipment operates at a constant speed, using the original pressure of the municipal water to achieve a superimposed pressure that ensures the pressure required by the user and its constancy. 

           4. Protection of the main network pressure: to regulate maximum consumption, an intelligent electromagnetic valve is used at the tank inlet to control the pressure and water level. When the network pressure decreases and the pressure pump draws water from the tank, through intelligent control, if the water level in the tank is low, the electromagnetic valve opens to release water from the network, ensuring pressure at the water intake. This measure prevents maximum consumption, acting as peak regulation, and avoids the discharge of water at zero pressure in common tanks, effectively protecting the network pressure.

           5. Intelligent pressure boosting pump: when the municipal water pressure meets the user's needs, the pressure boosting pump remains in a resting state through variable frequency control. When it is not peak time and the municipal water pressure does not reach the required pressure, the pump can increase the pressure based on the municipal water pressure (0.2-0.5MPa), compensating for the difference and fully utilizing the residual pressure to save energy, achieving a significant energy-saving effect.

           6. Eco-friendly and pollution-free: all materials in contact with the product's water are made of food-grade 304 stainless steel, the pressure tank and sealing materials meet sanitary standards, avoiding common water source contamination problems in traditional pools or tanks.

           7. Intelligent frequency control: during the water supply with superimposed pressure, the equipment can fully utilize the inherent pressure potential energy of the municipal source, compensating for the difference and maximizing the energy-saving effect of variable frequency speed control.

           8. High efficiency and energy saving: to further reduce energy consumption and avoid unnecessary work, the product uses automatic pressure control technology, which also effectively solves the problem of critical flow oscillation during the on-off transition of pumps, improving the comfort of water supply.

           9. The designed frequency control cabinet has high intelligence: it performs detection, alarm, and automatic switching of two water sources; it manages replenishment, storage, source switching, and pressure boosting operation of the tank in a unified and reasonable manner.

    Scope of application of the non-negative pressure water supply equipment with variable frequency box type:

           1. Applicable geographical scope: suitable for areas with sufficient pressure in the urban network for pressurized water supply; 

           2. Applicable project type: production of industrial and mining enterprises, industrial water use, intermediate pressure boosting pumping stations in drinking water plants; 

           3. Applicable project location: secondary pressure boosting system for water supply; 

           4. Other applicable areas: water supply for domestic use in residential buildings, offices, hotels, restaurants, and other new, remodeled, or expanded public buildings.

     

    Friendly reminder ： For performance parameters, please visit directly Water pump selection Page for direct consultation

    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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