Installation instructions and sequence for chemical centrifugal pumps

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Installation instructions and sequence for chemical centrifugal pumps 1. Installation instructions for chemical centrifugal pumps ① During installation, the weight of the pipelines should not be borne by the pump; each should have its own support to prevent deformation, which could affect performance and lifespan. 　　②The pump and motor form an integrated unit, so alignment is not required during installation, making it very convenient to install. 　　③The foot bolts must be tightened during installation to prevent vibrations at startup from affecting the pump’s performance. 　　④Before installing the water pump, it is necessary to carefully check the pump’s flow channel for any hard objects that could affect its operation (such as stones, iron particles, etc.), to prevent damage to the impeller and the pump body during operation. 　　⑤For ease of maintenance and safe operation, a control valve is installed on each of the inlet and outlet pipelines of the pump, and a pressure gauge is placed near the pump’s outlet. This ensures that the pump operates within its rated head and flow rate ranges, guarantees its proper functioning, and extends its service life. 　　⑥Pumps used in suction applications should be equipped with a foot valve; the inlet pipeline should have as few bends as possible, and there should be no leaks of water or air. 　　⑦Drain pipes such as check valves should be installed outside the gate valve. 　　⑧After installation, rotate the pump shaft; the impeller should not make any friction sounds or stick, otherwise the pump should be disassembled to determine the cause. 　　⑨Pump installation methods are divided into rigid connection and flexible connection installation. 2. Installation sequence of the centrifugal pump: ① When the unit is delivered to the site, if it comes with a base, the pump and motor have already been aligned; therefore, there is no need to remove them when leveling the base, making the installation process very convenient. ② Place the base on the foundation, and insert wedge-shaped iron pieces near the foot screws to lift the base by 20–40 millimeters – this is done for leveling before filling it with cement slurry. ③ Use a level to check the levelness of the base; after leveling, fill it with cement slurry. Check the levelness again once the cement has dried. ④ When the unit has a high power rating, the pump, motor, and base may be packaged separately for easier transportation. In such cases, the user must carry out the installation and alignment themselves. The steps are as follows: a) Clean any dirt from the support surfaces of the base, as well as from the surfaces where the pump and motor feet sit, then place the pump and motor on the base. b) Adjust the levelness of the pump shaft; after leveling, secure the pump to the base using bolts to prevent it from moving. c) Lift the motor so that its coupling aligns with that of the pump, then lower the motor to its proper position on the base. d) Adjust the gap between the two couplings to around 5 mm, and ensure that the axis lines of the motor shaft and the pump shaft are aligned. To do this, place a straight edge on the couplings – their outer surfaces should be level with the straight edge. If they are not aligned, adjust the relative positions of the motor or the pump, or use thin iron sheets to make the adjustment. e) To check the accuracy of the installation, measure the gap between the surfaces of the couplings at several different points around their circumference using a feeler gauge. The difference between the maximum and minimum gaps around the circumference should not exceed 0.3 mm, while the difference between the upper and lower or left and right positions along the centerline should not exceed 0.1 mm. 　　⑤When the unit is not equipped with a base, it must be installed directly on the foundation. The method is similar to that in ④, but greater attention should be paid to alignment. In the comments section, everyone can add information to clarify any incorrect or incomplete parts of the article, so that those who read it next can learn more. What you know is exactly what everyone needs.