{"id":5714,"date":"2025-06-11T15:44:42","date_gmt":"2025-06-11T07:44:42","guid":{"rendered":"https:\/\/www.xthbm.com\/?p=5714"},"modified":"2025-06-11T15:44:43","modified_gmt":"2025-06-11T07:44:43","slug":"detailed-installation-method-of-water-meter-movement","status":"publish","type":"post","link":"https:\/\/www.xthbm.com\/zh\/detailed-installation-method-of-water-meter-movement\/","title":{"rendered":"Detailed Installation Method of Water Meter Movement"},"content":{"rendered":"

I. Core Steps of Movement Assembly<\/strong><\/strong><\/h2>\n\n\n\n

1. Precision assembly system for the case and the plug plate<\/strong><\/strong><\/h3>\n\n\n\n

(1) Structural matching design<\/p>\n\n\n\n

The case is made of high-strength engineering plastic through injection molding. The bottom is equipped with stepped installation holes of \u03a68\u00b10.05mm, and the inner wall is precisely processed by a CNC machine tool to form a 2\u00b0 guiding taper. The insert plate is formed by stamping 304 stainless steel. The edge is designed with 12 groups of evenly distributed dovetail teeth, and the tooth pitch accuracy is controlled within 0.1mm.<\/p>\n\n\n\n

(2) Key points of assembly process<\/p>\n\n\n\n

\u2460 Pre-installation inspection: Use a dial indicator to check that the flatness of the insert plate is \u22640.02mm<\/p>\n\n\n\n

\u2461 Alignment operation: Tilt the insert plate 45\u00b0 and insert it into the opening slot of the case, then rotate it clockwise 15\u00b0 to the locked position<\/p>\n\n\n\n

\u2462 Pressure test: Apply an axial pressure of 50N to verify the bite strength<\/p>\n\n\n\n

2. Precision gear shaft transmission system<\/strong><\/strong><\/h3>\n\n\n\n

(1) Core component parameters<\/p>\n\n\n\n

Main shaft material: SUS420 stainless steel<\/p>\n\n\n\n

Bearing structure: Double gemstone bearing (corundum material)<\/p>\n\n\n\n

Pointer system: Aluminum alloy balanced pointer (counterweight error \u22640.01g)<\/p>\n\n\n\n

(2) Installation process flow<\/p>\n\n\n\n

The operation requirements of the steps and the detection standards<\/p>\n\n\n\n

\u2460 The pre-installed silicon-based grease on the shafting system has a grease coverage rate of no less than 90%<\/p>\n\n\n\n

\u2461 The preload force for the axial positioning installation of the wave spring gasket is 0.5\u00b10.1N\u00b7m<\/p>\n\n\n\n

\u2462 Radial limit adjustment: The axial movement of the nylon limit block is \u22640.03mm<\/p>\n\n\n\n

I<\/strong>I<\/strong>. Error-proofing Design Enhancement Plan<\/strong><\/strong><\/h2>\n\n\n\n

1.<\/strong>Double insurance institution<\/strong><\/strong><\/h3>\n\n\n\n

(1) Primary limit: Three 120\u00b0 evenly distributed ABS limit columns are injection molded in the mold at the top of the case<\/p>\n\n\n\n

(2) Secondary protection: A ring-shaped groove is machined at the end of the gear shaft, and an elastic retaining ring is installed as a match<\/p>\n\n\n\n

2. Innovate and stabilize the structure<\/strong><\/strong><\/h3>\n\n\n\n

The limit slot adopts a composite design of “V-shaped guide Angle + slightly convex surface”, and the interference fit with the elastic block is controlled within the range of 0.05-0.08mm. Laboratory verification shows that this structure can enhance the anti-vibration performance of the plug-in board by 40%.<\/p>\n\n\n\n

I<\/strong>II<\/strong>. Pre-installation Preparation Standards<\/strong><\/strong><\/h2>\n\n\n\n

1. Pipeline pretreatment standards<\/strong><\/strong><\/h3>\n\n\n\n

(1) Flushing requirements:<\/p>\n\n\n\n

Newly installed pipes: Flush with 0.3MPa pressure water for \u226530 minutes<\/p>\n\n\n\n

Pipeline renovation: Add magnetic filters for treatment<\/p>\n\n\n\n

(2) Impurity control:<\/p>\n\n\n\n

The residue content should be less than 5mg\/m\u00b3 when tested with a 100\u03bcm filter screen<\/p>\n\n\n\n

2. Installation Technical Specifications<\/strong><\/strong><\/h3>\n\n\n\n

Environmental conditions:<\/p>\n\n\n\n

Ambient temperature: 5-40\u2103<\/p>\n\n\n\n

Relative humidity: \u226485%RH<\/p>\n\n\n\n

(2) Operating Specifications:<\/p>\n\n\n\n

\u2460 It is strictly prohibited to directly hold the watch body with pipe clamps<\/p>\n\n\n\n

After installation, three full-scale water flow tests need to be conducted<\/p>\n\n\n\n

\u2462 Before installing the lead seal, the error should be checked (\u2264\u00b12%).<\/p>\n\n\n\n

I<\/strong>V<\/strong>. Key Points of Quality Control<\/strong><\/strong><\/h2>\n\n\n\n

1.Key inspection items<\/strong><\/strong><\/h3>\n\n\n\n

Sealing test: Maintain a water pressure of 0.6MPa for 15 minutes<\/p>\n\n\n\n

Start-up flow test: \u22644L\/h<\/p>\n\n\n\n

Measurement accuracy test: The error in the flow section Q2-Q4 is \u00b11%<\/p>\n\n\n\n

2. Compliance with industry standards<\/strong><\/strong><\/h3>\n\n\n\n

Strictly implement the technical requirements of GB\/T 778.1-2018 “Drinking Cold Water Meters and Hot Water Meters”, and the key components have passed ISO 4064 Grade B certification.<\/p>\n\n\n\n

(Note: This regulation is applicable to the installation of the rotor type cold water meter movement of DN15-DN40. For special models, please refer to the manufacturer’s technical manual.<\/p>\n\n\n\n

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