JPS603420U

JPS603420U - water meter

Info

Publication number: JPS603420U
Application number: JP9449483U
Authority: JP
Inventors: 元小野田
Original assignee: 株式会社　金門製作所
Priority date: 1983-06-20
Filing date: 1983-06-20
Publication date: 1985-01-11

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は丸形ノズルと矩形ノズルとの回転モーメントを
比較する模式図、第２図は丸形ノズルと矩形ノズルおよ
び本案の複数矩形ノズルとを用いたときの流量と器差と
の関係を示すグラフ、第３図は先願の水道メータにおけ
る横断平面図、第４図ないし第６図は本考案の一実施例
を示すもので、第４図は水道メータの縦断面図、第５図
は第４図の■−■線に沿も横断面図、第６図は第５図の
■−ＶＩ線に沿う断面図、第７図は噴流の作用時間と作
用力との関係を模式的に示すグラフ、第８図は本考案の
流入ノズルの他の実施例を示す正面図である。１・・・ケース本体、４・・・計量室、６・・・羽根車
、７・・・流入口体、８・・・流出口体、９ａ、　　９
ｂ・・・流入ノズル、１０ａ、１０ｂ・・・流出ノズル
。Figure 1 is a schematic diagram that compares the rotation moment between a round nozzle and a rectangular nozzle, and Figure 2 shows the relationship between flow rate and instrumental error when using a round nozzle, a rectangular nozzle, and the multiple rectangular nozzles of the present invention. 3 is a cross-sectional plan view of the water meter of the prior application, FIGS. 4 to 6 show an embodiment of the present invention, FIG. 4 is a longitudinal sectional view of the water meter, and FIG. is a cross-sectional view taken along line ■-■ in Figure 4, Figure 6 is a cross-sectional view taken along line ■-VI in Figure 5, and Figure 7 schematically shows the relationship between jet action time and acting force. The graph shown in FIG. 8 is a front view showing another embodiment of the inflow nozzle of the present invention. DESCRIPTION OF SYMBOLS 1... Case body, 4... Measuring chamber, 6... Impeller, 7... Inlet body, 8... Outlet body, 9a, 9
b... Inflow nozzle, 10a, 10b... Outflow nozzle.

Claims

[Scope of utility model registration request]

In a water meter equipped with a case body consisting of an inlet body, an outlet body, and a metering chamber that accommodates an impeller, a peripheral wall of the metering chamber is tilted in a tangential direction of the metering chamber at least at a position corresponding to the inlet body. A water meter further comprising a rectangular inflow nozzle divided into a plurality of sections in the rotational direction of the impeller.