Multi-suction head sewage pump consists of three parts, namely the working part, Yang pipe part, Inoue part, the use of a long time, each part may have failure. Now to introduce the common suction head sewage pump failure and solutions. Multi-suction sewage pump First, the working part mainly by the shell, shell, shell, impeller, cone sets, shell bearings, impeller shaft and other components. Impeller is closed. In the diversion shell inlaid with a sealing ring, so that easy to replace after wear, bolted between the shell. Yang part of the main pipe by the Yang pipe, drive shaft, bracket group and other components. Second, the problem of multi-suction head sewage pump Multi-suction head sewage pump operation due to increased vibration, so that the deep well pump can not run in serious cases will lead to the release of Yang pipe or shaft broken shaft phenomenon, brought to the safety of production Serious impact. Third, the reasons for analysis and troubleshooting Long-axis vibration caused by many factors, summarized by routine maintenance work, summed up the main reasons for the vibration are the following: 1, before the start of pre-irrigation irrigation or lack of irrigation, the pump after rotation Dry friction occurs between the rubber bearings in the transmission shaft and the bracket group, causing violent vibration. Therefore, before the start of the pump, the rubber bearing must be continuously poured 3 ~ 5mm, until the pump seat pre-injection hole water out. 2, deep well pump impeller friction with the shell operation. The main reason is that before starting the pump, due to improper adjustment of the clearance between the shafts, it causes the impeller and the pump casing to directly contact with the friction and generate vibration. When this happens, stop the pump immediately and readjust the axial clearance of the impeller so that the adjustment amount is equal to half of the total installed amount. 3, shaft and motor shaft bending As the axis of transport, improper storage or uncorrected to the standard range before installation, resulting in shaft bending, resulting in rotation around the drive shaft swing, friction with the bracket bearing friction, causing vibration. Therefore, before the assembly of the deep well pump, it is necessary to clean and measure each axis, and correct the radial fluctuation value of the pump shaft to the standard range. 4, bracket group rubber bearing wear or shedding its serious reasons are: (1) transmission shaft bending serious; (2) bearing clearance is too small; (3) bearing bracket is not correct. Therefore, serious wear rubber bearings. Bearings and bracket group with loose, rubber bearing failure is the main cause of bearing off. In this case, should be removed pump school axis, maintenance bracket replacement bearing. 5, the well inclination is too large or serious bending As the well inclination is too large, deep well pump starts, Yang pipe and shaft wall collision friction, resulting in vibration, resulting in severe water pipe release. Therefore, the pump should be unplugged to measure the verticality of the wells. According to the measurement results, the wells should be washed as appropriate. 6, multi-suction head sewage pump falling pipe As the pumping pipe and pipe hoop thread machining accuracy is not enough or in the installation of the water pipe fastening is not in place, in the pump operation process, resulting in loose thread with the Department, Yang pipe separation to produce vibration. In view of this situation, should pull the pump to repair the pipe thread. In addition to the above main reasons, the motor bearing wear, pump base causes of inequality can also cause deep well pump vibration. According to the different causes of vibration should take appropriate measures, especially in equipment maintenance and pre-commissioning, should do a good job of inspection and measurement of all parts and preparations before starting to ensure the normal operation of deep well pump. Further Reading: pump valve pipe fittings Exhibition 2016 Exhibition of Information Industry, Internet (Xiamen) Technology Co., Ltd. Author: Asian pumps Network Editor: Yao Xiaoxia (QQ / micro letter: 2355962924) http://beng.liuti.cn/ (Hotline : 400-6030-811)
