Stainless steel water meter shell

Abstract

The invention relates to a stainless steel water meter shell, comprising a shell with a cavity inside, wherein a water inlet and a water outlet are arranged on the side wall of the shell. The stainless steel water meter shell is characterized in that the shell comprises an upper shell and a lower shell; a water inlet cavity with an open upper part and a closed bottom is arranged in the lower shell; a water outlet cavity is arranged in the upper shell; the bottom of the water outlet cavity is bent inwards to form an annular division surface; the bottom of the upper shell and the upper part of the lower shell are welded together; an annular cover opening face is arranged at the top of the upper shell; an external thread is formed on the outer circumference face of the cover opening face; the water inlet is arranged on the side wall of the water inlet cavity; and the water outlet is arranged on the side wall of the water outlet cavity. The upper shell and the lower shell can be made of a stainless steel pipe fitting by the steps of directly blanking, punching and machining. The stainless steel water meter shell provided by the invention has the advantages of high material utilization ratio and simple machining process, and is suitable for standardized volume production. Importantly, the division surface is formed not by welding an independent parts, so that the integrity and the size uniformity of the water outlet cavity in the upper shell can be ensured, and the stability of machining accuracy of the water meter shell is ensured.

Description

technical field [0001] The invention relates to a watch case for a water meter, in particular to a stainless steel water watch case. Background technique [0002] At present, water meter casings on the market mainly include casings made of plastic, cast iron, brass and aluminum alloy. The above casing materials have their own advantages and disadvantages, but they have the following problems: plastic casings are different due to different plastic materials. 1. The quality level is uneven. The biggest hidden worry is that the strength is not enough, it is easy to age and crack, and the watch case has hidden dangers of water leakage; cast iron is the most used material for the watch case of traditional water meters, but it is easy to oxidize and rust, causing secondary water quality. Pollution, difficult maintenance and replacement in the later period. In addition, the iron-shell water meter shell using casting technology needs sand casting, electric furnace and other process ...

AI Technical Summary

Problems solved by technology

[0002] At present, water meter casings on the market mainly include casings made of plastic, cast iron, brass and aluminum alloy. The above casing materials have their own advantages and disadvantages, but they have the following problems: plastic casings are different due to different plastic materials. 1. The quality level is uneven. The biggest hidden worry is that the strength is not enough, it is easy to age and crack, and the watch case has hidden dangers of water leakage; cast iron is the most used material for the watch case of traditional water meters, but it is easy to oxidize and rust, causing secondary water quality. Pollution, difficult maintenance and replacement in the later period. In addition, the iron-shell water meter shell using casting technology needs sand casting, electric furnace and other process equipment, backward technology, unfavorable for environmental protection and low-carbon new requirements, so the water meter industry has gradually canceled the cast iron shell; Due to the characteristics of easy processing and forming, shell water meters have always occupied a dominant position in the high-end water meter market. However, due to copper materials and heavy metal elements such as lead and zinc, they do not meet people's continuously improving requirements for water supply quality, and copper prices are high and fluctuating. It is not conducive to large-scale promotion and application; aluminum alloy is also a new material for preparing water meters recently introduced, but because aluminum alloy is easy to oxidize, its strength and toughness are poor, and its service life needs to be verified

[0004] At present, there are also stainless steel water watch cases on the market. Most of these stainless steel water watch cases are integrally formed by the lost wax casting process to form a cavity. The production efficiency and cost of the aforementioned stainless steel water watch cases are high, and it is difficult to achieve mass production, which is not conducive to popularization.

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