News

Unremitting efforts and vigorous progress – Liancheng Group was invited to participate in the third member representative conference of Jiangqiao Town Chamber of Commerce

On the afternoon of April 28, the third member representative meeting of Jiangqiao Town Chamber of Commerce was successfully held. Wang Yuwei, deputy director of the United Front Work Department of the Jiading District Committee and secretary of the Party Leadership Group of the District Fed... Read More

Upgraded cooperation and upgraded products—Shanghai Liancheng (Group) Co., Ltd. obtained the qualified supplier certificate from CNNC

 Recently, Shanghai Liancheng (Group) Co., Ltd. successfully passed the supplier qualification inspection review of CNNC Strategic Planning Research Institute Co., Ltd. and officially obtained the qualified supplier qualification of CNNC. This marks that the group company has successfully entered... Read More

Energy saving and emission reduction, quality and efficiency improvement—Hebei Jingye Steel Energy Saving Renovation Project

As an active advocate and supporter of the “double carbon” goal, Liancheng Group has been committed to continuously providing customers with comprehensive services, efficient and innovative energy-saving product solutions, reducing energy consumption and operating costs, and achieving... Read More

Matters needing attention of single-stage pump

1、Pre-start preparation 1). Corresponding to the grease lubrication pump, there is no need to add grease before starting; 2). Before starting, fully open the inlet valve of the pump, open the exhaust valve, and the pump and water inlet pipeline should be filled with liquid, then close the exhaus... Read More

Matters needing attention of middle-opening pump

1. Conditions necessary for start-up Check the following items before starting the machine:   1）Leak check 2）Make sure that there is no leakage in the pump and its pipeline before starting. If there is leakage, especially in the suction pipe, it will reduce the operating efficiency of the pump ... Read More

Matters needing attention of boiler feed water pump

1. Pump can only run within the specified parameters; 2. Pump conveying medium must not contain air or gas, otherwise it will cause cavitation grinding and even damage parts; 3. Pump can not convey granular medium, otherwise it will reduce the efficiency of pump and the life of parts; 4.The pump ... Read More

Matters needing attention of Submersible sewage pump

1. Before use： 1).Check whether there is oil in the oil chamber. 2). Check whether the plug and sealing gasket on the oil chamber are complete. Check whether the plug has tightened the sealing gasket. 3).Check whether the impeller rotates flexibly. 4). Check whether the power supply device is sa... Read More

Introduction to common pump terms (6) – Pump cavitation theory

Cavitation of Pump: Theory and Calculation Overview of cavitation phenomenon The pressure of liquid vaporization is the vaporization pressure of liquid (saturated vapor pressure). The vaporization pressure of liquid is related to temperature. The higher the temperature, the greater the vaporiza... Read More

Introduction to common pump terms (5) – Pump impeller cutting law

Fourth section Variable-diameter operation of vane pump Variable-diameter operation means cutting off part of the original impeller of vane pump on lathe along the outer diameter. After the impeller is cut, the performance of the pump will change according to certain rules, thus changing the work... Read More
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