As a key device for measuring water consumption, the quality of its assembly directly impacts its measurement accuracy and service life. A scientific and standardized assembly process is crucial for ensuring stable water meter performance.
Core Component Preparation
Water meter assembly begins with the screening and pre-processing of precision components. Core components include the impeller metering mechanism, gear transmission system, seal housing, and readout display module. The impeller shaft concentricity, gear meshing clearance, and seal pressure rating are rigorously inspected to ensure compliance with ISO 4064 international standards.
Step-by-Step Assembly Process
First, the impeller assembly is vertically inserted into the housing's flow chamber. Laser alignment is performed to ensure that its angle with the water flow direction is ≤3° to minimize fluid impact. The gear reduction box is then installed, using a clearance fit process to precisely control the transmission ratio within the range of 1:100 to 1:1000. When assembling the sealed housing, evenly apply food-grade sealing grease to the threaded joints and gradually tighten the bolts in three steps (torque value 8-10 N·m) to prevent stress concentration that could cause housing cracking.
Functional Integration and Testing
Finally, install the electronic readout module (if applicable) and connect it to the mechanical drive shaft via a waterproof plug to ensure stable pulse signal transmission. After assembly, the entire unit undergoes a 72-hour pressure immersion test (0.6 MPa) and a zero-flow stability test to eliminate defective units with an indication error exceeding ±2%.
Only through standardized assembly processes combined with rigorous quality control can we produce high-precision water meters that meet the GB/T 778-2018 standard, providing reliable data support for water resource management.