问：他们的英雄
，请告诉我如何让水表走慢或不走，没有让工作人员看到这些检查表？

答：
米的作品又是什么呢？其实很简单，因为米的房屋是固定的，其内部体积是固定的，而水是移动流
，它促进了叶轮旋转，每当叶轮旋转圈，有一个固定量的水了。因此，只要累积数的叶轮旋转环下
年，由数量乘以不断，我们可以得到水流的总额。

原则，我们有明确的，然后在1米是它具体是什么样的期待，因为为了防止盖子上的封条欺骗用户，拒绝打开
许。

米的内部结构，从外到里可分为壳体，套筒，内芯散打建分歧。是铸铁外壳，出来的水通过壳的下部从入口
环形空间，这里被称为“下环室。”在这个环形空间以上的“上环室”和出口相互关联的。套筒的底部有一个与
过滤器，出水中杂物过滤孔。有两排上下套侧孔，孔的位置与壳正好上下室面向环，很明显，下一行是
水孔，竹排上的水孔。特别值得注意的是，无论沿孔行被置于一个角度发挥的切线方向轮，其工作如动画所示。注意
两洞行从上到下相反的方向。水沿切线方向流动，从孔下一行，必将形成一个旋转流，这对水表是非常重要的。

让我们来看看里面的核心，内核分为上，中，未来三年，我们从上层的窗户看到，只有指针和拨号。其实，最关键的
较低，有一塑料圆，圆边有许多塑料叶片，上面的图表（图1），所谓的“叶轮。”

叶轮只是在较低的套管旋转流形成的洞的位置，水离开轮的周产生转矩的影响，使叶轮转动了。龙
首先是打开更大的流量，尖锐的叶轮转得更快。

叶轮向上到达轴垂直轴以上的中间，有一个小齿轮，用它和“十进制齿轮”齿轮，转让累计目的。 “10
二进制齿轮”的作用是切换齿轮个位数，10位数字，每10圈转上一圈齿轮。换句话说，个位数齿轮转一圈，10位开关之一的齿圈第十
。单位齿轮活动的人，是足以驱动10位齿轮。几乎每一个小数用两对齿轮完成，以便把
同一个方向，其中包括一对传动比为9：30，另一对是10:30，一系列的两对在一起，总传动比就是这两个，即0.099999产品，
可以近似为0.1。
在此基础上
，如果你想阅读前4名黑人大型阅读7位数字（小数点(Xiaoshudian)后三位小数读，是红的规模），它开始在齿轮12。
与其他一些重新使用，并在这个狭小的空间中挤在18个和34个齿轮轴也可以作为高密度安装认为。我没有想到，一个径流自
表居然还有这么多的齿轮吧！

虽然我们现在已经进入21世纪(Centruy)，但这种机械水表，其简单，廉价，可长期在潮湿环境下长期使用维修的需要，而且还
停电，停电不影响工作仍然是值得的，我们长期服务。电子技术虽然水位有，但传播到普通百姓家，我们发现
还需要相当长的时间。

The structure of water meter works?

Question:
of their heroes, please tell me how to make water meters to go slow or do not go, did not allow staff to see them check the meter?

Answer:
meter works then what is it? In fact is very simple, because the meter housing is fixed, its internal volume is fixed, while the water is moving stream
, it promoted an impeller rotation, whenever the impeller rotating circle, there is a constant volume of water too. Therefore, as long as the cumulative number of impeller rotating ring under
years, multiplied by the constant volume, we can get the total amount of water flow.

principles that we have clear, then take a look at the meter which is specifically what kind of it, because in order to prevent users from cheating on the lid seals, refused to open
Xu.

meter s internal structure from outside to inside can be divided into shell, sleeve, inner core Sanda Jian. Is a cast iron shell, the water came out from the inlet through the lower part of the shell
annular space, here called the lower ring chamber. In this annular space above the Sheung Wan Room and the outlet interlinked. The bottom of the sleeve has a hole with the
filters, filter out the debris in the water. There are two rows of the upper and lower sleeve side hole, hole location coincided with the shell of the upper and lower rooms facing the ring, obviously, the next row is
water holes, water holes on the raft. Of particular note, both along the row of holes are placed at an angle to play a round of the tangential direction, and its work, such as shown in animation. Note
two rows of holes from top to bottom in the opposite direction. Water from the next row of holes along the tangential direction of flow in, is bound to form a rotating flow, which for the water meter is very important.

let s look inside the core, inner core is divided into upper, middle and the next three, we have seen from the windows of upper-class, only the pointer and dial. In fact, the most critical
is lower, and there are a plastic round, round the side there are many plastic leaves, above diagram (Figure 1), called impeller.

impeller location just in the lower casing holes formed by rotating flow, the water leaves the impact of rounds of weeks to produce torque, so that impeller rotation up. Long
the first to open was greater the flow, the sharper the impeller to turn faster.

impeller upward to reach the middle of the axis perpendicular to the shaft above, there is a small gear, use it and the decimal gear gear, to transfer the accumulated number of purposes. 10
binary gear role is to switch gears every 10 laps in the single digits, 10 digits to switch gears on the lap. In other words, single-digit gears turn lap, 10-digit switch to one-tenth of the ring gear
. Single-digit gear is active persons, is sufficient to drive 10-digit gear. Virtually every one decimal using the two pairs of gears to complete in order to turn
the same direction, including a pair of transmission ratio is 9: 30, another pair is 10:30, the two pairs of series together, the total transmission ratio is the product of these two, namely, 0.099999,
can be approximated as 0.1.

On this basis, if you want to read seven numbers (a decimal point before the reading of four black scale, after the reading of three decimal places are red scale), it starting a 12 on the gear.
With some of the other re-use, and in the middle of this small space to squeeze in 18 axis and 34 gears can also be regarded as high-density installation. I did not expect that a runoff since
table come there are still so many gears it!

Although we now have entered the 21st century, but this mechanical water meter, with its simple and inexpensive, can be long-term use in wet environments without the need for maintenance, but also
without power, power outage does not affect the merits of the work will still be for the We long service. Although electronic technology water table there, but to spread to ordinary people s homes that we find
still take quite a long time.

04-12-20