Plastic water meter case and plastic water meter detecting support

Abstract

The invention provides a plastic water meter housing which has a structure as follows: a positioning mechanism between the prior plastic water meter housing and a water meter cassette mechanism case body is rearranged at the outer side of a cavity opening of the plastic water meter housing or the lower side inside the cavity opening; a ring-shaped groove and an O-shaped obturating ring are arranged between the inner side of the cavity opening of the plastic water meter housing and the water meter cassette mechanism; the jetting-moulding plastic water meter housing is put inside an electron beam accelerator and the electron beam is adopted to realize radiation crosslinking, which greatly increases the pressure-proof grade of the whole structure of the water meter and ensures that the ABS engineering plastics water meter housing does not leak for a long time under the pressure higher than 3MPa. A special compression-resist detecting bracket is also designed so that the plastic water meter can realize calibration and detection on the prior meter checking and detecting stage. The production efficiency is high, the energy consumption is low, the specific gravity is light, the rustiness is avoided, the corrosion resistance is realized, the finished product has high accuracy and delicate appearance, and the water meter with a plastic housing and low price can replace the water meter with a metal housing and is used in households.

Description

technical field [0001] The invention relates to a water meter, in particular to a plastic shell type domestic water meter, which belongs to the field of flow measurement. Background technique [0002] Traditional water meter housing materials are mainly cast iron, brass, and stainless steel. The water meter case made of cast iron is low in price and high in strength. The disadvantage is that the casting is rough, and it is easy to rust and corrode to pollute the water quality. The water watch case made of brass is easy to process, exquisite in casting, and corrosion-resistant. The disadvantage is that the price is high, the rusty patina is toxic, and the lead in brass is also a harmful substance to the human body. Stainless steel is corrosion resistant and does not rust, making it an ideal material for water meter housings. However, stainless steel materials are difficult to process and expensive, so they can only be used in high-end products. [0003] Because a small amo...

AI Technical Summary

Problems solved by technology

As a result, the measurement accuracy of the calibrated and inspected plastic water meters is greatly reduced, and the water meters with qualified accuracy become unqualified water meters.

This is also the main obstacle that the existing engineering plastic water meter cannot pass the test and cannot become a formal household water meter

[0007] To sum up, the existing engineering plastic water meters cannot be calibrated normally due to the low pressure resistance of the plastic water meter housing and the clamping pressure of the piston-cylinder clamping connector on the meter verification platform. It can be used as an agricultural water meter, and it cannot be used as a substitute for a metal shell water meter for household use.

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