Main component installation quality control measures (1) Impeller chamber installation quality control The impeller chamber is the reference for the installation of the entire pump. The installation of the impeller chamber is based on the center line and elevation of the pre-measured design unit. The “Piano Line-Headphone Method†is used for accurate measurement during installation to ensure that the axis of the pump unit meets the design requirements. After the impeller chamber is fixed and fixed firmly, the actual center line of the pump set is locked in the pit according to the center of the impeller chamber. The pump section and the motor section are each locked by one layer, and each layer is locked at least 8 points. (2) Installation quality control of impeller, pump shaft and vane body A. The impeller, pump shaft and vane body are assembled in the installation room, and the whole is hoisted into the pit. When assembling, the pump shaft and the impeller are fixed on the vane body by special tools provided by the manufacturer. It is necessary to repeatedly adjust to ensure the pump shaft and The vane body gap is uniform, and the pump shaft axis is perpendicular to the vane body flange surface. B. When installing the impeller, pump shaft and vane body with the center of the impeller chamber as the reference, adjust the impeller, pump shaft and conductor to make the gap between the impeller and the impeller chamber uniform, and use the center of the pump shaft locked in the pump layer to check the center of the pump shaft. Adjusting the vane body to ensure the verticality of the pump shaft, the impeller center elevation can not be directly measured during installation, the impeller center elevation is converted to the pump upper flange elevation by calculation, and the impeller center elevation is controlled by measuring the flange elevation on the pump shaft. (3) Quality control of rack and stator installation The lower frame and motor are mounted to lock against the center of the pump set in the motorized layer, and the "piano line-headphone method" is used to accurately measure the motor and the pump. The stator elevation is the key to controlling the elevation of the rotating part of the pump set. Although the adjusting washer is generally provided between the upper frame and the stator, the adjustment range is limited. Therefore, the stator core should be strictly controlled based on the height of the motor layer. The center elevation, while ensuring the elevation and level of the joint with the upper frame. (4) Motor rotor installation quality control The gap between the stator and the rotor is small, and the rotor should be closely monitored to prevent the rotor from colliding with the phase. Generally, when the rotor is hoisted, 12 to 16 thin wood strips are arranged between the stator and the rotor gap, and the wooden strip is twitched during the lifting process to prevent the setting. The rotors touch each other. After the rotor is lifted in position, it is connected to the pump shaft, and the adjustment should be made when the axis is adjusted. (5) Axis adjustment The static adjustment of the axis should fully consider the impeller clearance, the air gap, the gap between the seals and the clearance at each bearing. By adjusting the rotating part to the most sturdy position, and then checking the disc, if the disc inspection record does not meet the requirements, it should be carried out. Comprehensive analysis, find out the reasons for not causing the non-conformity, and develop corresponding measures to adjust. Concerned about surprises Label: Quality control measures for installation of main components of water pump and motor installation Previous: Precautions for using the tool repair function for wire cutting machine Next: Difference analysis between single control switch and dual control switch SDS Plus and SDS Max drill bits can be used for drilling operations in concrete, reinforced concrete, granite and similar materials. SDS-Plus has a drilling diameter of 4mm to 32mm and a drilling depth of 110mm to 1000mm; SDS-Max has a drilling diameter of 12mm to 52mm and a drilling depth of up to 1200mm. Sds Drill Bits,High Carbon Steel Drill Bits,Concrete Drill Bit,Flat Hammer Drill Bits Danyang Yongshun Tools Co.,Ltd , https://www.china-drill-bit.com
SDS Drill Bits are available with two (properly shaped integral straight edges), three (star arrangement) or four (integral cross arrangement) inserts, made of cemented carbide. They are deeply embedded in the steel head with industrial solder and are characterized by a high degree of mechanical and heat resistance.
SDS Plus and SDS Max Bits should not only be selected based on the diameter of the drilled hole, but also their depth standard. Both of these measures are necessary to maximize productivity.