Recently, the Shanghai Science and Technology Commission announced the list of the first batch of Shanghai high-tech achievements transformation projects in 2025 in accordance with the "Shanghai High-tech Achievements Transformation Project Recognition Measures" (Shanghai Science and Technology Regulation [2020] No. 8) and other documents, and Shanghai Liancheng (Group) Co., Ltd. was successfully selected.
Shanghai Liancheng (Group) Co., Ltd. was founded in 1993. It is a large enterprise focusing on the research and development and manufacturing of pumps, valves, environmental protection equipment, fluid delivery systems, electrical control systems, etc. The product categories cover multiple series and more than 5,000 types, which are widely used in national pillar fields such as municipal administration, water conservancy, construction, fire protection, electricity, environmental protection, petroleum, chemical industry, mining, and medicine.
After more than 20 years of rapid development and market layout, it now has five major industrial parks, headquartered in Shanghai, and distributed in economically developed regions such as Jiangsu, Dalian and Zhejiang. The company holds the national franchise "Safety Production License" and import and export enterprise qualifications. The products have obtained fire protection, CQC, CE, health permits, coal safety, energy saving, water saving, international standard product mark filing and self-declaration public commitment reports. It has applied for and holds more than 700 national patents and more than 80 computer software copyrights. As a drafting and editing unit of national and industry standards, it has obtained nearly 60 product standards. It has successively passed ISO9001, ISO14001, ISO45001, information security management, measurement management, and energy management system certifications, and has fully implemented ERP, QA, and CRM information management platforms.
The SLDP new high-efficiency self-balancing multi-stage pump of Shanghai Liancheng (Group) Co., Ltd. is the latest generation of pumps developed by Liancheng Group. The pump hydraulics and structure are newly designed, and the volute discharge section structure is adopted, which not only saves a lot of flow area and reduces friction loss, but also reduces the amplitude of efficiency drop when deviating from the design operating point, and expands the high-efficiency area of the pump. The structure is innovatively designed with multiple patented technologies to improve the reliability of the pump while improving the product structure. At the same time, the parameter optimization and structural improvement realize the optimization of pump cost.
SLDP new high-efficiency self-balancing multi-stage pump
1. R&D background
my country's economic development has shifted from a high-speed growth stage to a high-quality development stage. With the rapid economic development, the country's energy consumption has also grown rapidly and continues to rise. The overdevelopment of some high-energy-consuming industries and the lack of attention to energy conservation and consumption reduction have resulted in low energy utilization and increased resource consumption. Therefore, energy conservation and consumption reduction are urgent. It is particularly urgent to advocate green development, accelerate the adjustment and optimization of industrial structure and energy structure, and promote carbon consumption to peak as soon as possible.
As a domestic pump manufacturer with a certain scale, our company relies on advanced design and manufacturing methods and combines mature process technology to design and manufacture high-efficiency and energy-saving water pumps used in various water supply supporting projects, integrate existing water pump design experience, use the latest hydraulic design concepts, select more mature and superior hydraulic models, and at the same time strengthen the pump structure design, improve the comprehensive performance of the water pump, and contribute more to the development of the industry.
2. Product Features
● Automatic balancing design of axial force
The symmetrical impeller arrangement enables the pump to automatically balance the axial thrust during operation. There is no need to use a balancing disc that is easily worn, which minimizes the interference of the axial thrust on the pump. The residual micro-unbalanced thrust is borne by the bearing, and the rotor is evenly stressed, with strong stability and improved reliability.
● Special discharge section cavity design
A large amount of flow area is saved, which reduces friction loss. In addition, the water flow out of the impeller no longer impacts multiple guide vane positive blades, and the efficiency drop amplitude is reduced when it deviates from the design operating point, which widens the high-efficiency area of the pump.
● Optimized bushing design
The bushing is made of materials with excellent lubricity and a suitable operating clearance is set, which not only avoids friction caused by contact between dynamic and static parts, but also effectively reduces water loss.
● Special structure of sealing ring
The anti-sediment flow technology of two stop seal rings plus two O-rings can adapt to the scouring of sediment-containing water flow media.
● Flexible selection of shaft seal structure
The shaft seal can be mechanically sealed or packed with a packing seal to flexibly cope with various complex working conditions.
3. Economic benefits
● Extend the equipment life cycle and reduce the equipment replacement cost
The new high-efficiency self-balancing multistage pump has better equipment stability and service life, which is far superior to traditional products. It can save a lot of equipment replacement costs for the owner in the long run.
● Reduce operating costs
The efficiency of the new high-efficiency self-balancing multistage pump is 3-5% higher than that of similar products. Most products are higher than the national energy-saving evaluation value, and the energy-saving effect is significant. The high reliability of the product improves product quality and operation and maintenance performance, and further reduces customer operation and maintenance costs.
● Reduce production costs
The new high-efficiency self-balancing multistage pump uses more reasonable processing technology and assembly methods to further improve the relevant performance and service life of the finished product. At the same time, the optimized structural design can save 10-25% of the material cost and save pump casting consumables.
4. Application field
The new high-efficiency self-balancing multistage pump is widely used in raw water lifting, drainage and water supply and other fields. The main targets of the domestic market are mainly concentrated in the electronics, electricity, chemical, metallurgy, medicine, fire protection, environmental protection, municipal administration, national defense, textile, mining, construction and other industries.
Shanghai Liancheng (Group) Co., Ltd. is committed to becoming a top domestic fluid industry manufacturing enterprise, adhering to the harmonious relationship between man and nature, specializing in the research and development and manufacturing of environmentally friendly and energy-saving products to improve the quality of human life.
Post time: Mar-25-2025