What are the water meter models? Detailed introduction

In daily life, water is indispensable, every household needs to use water, our living water is supplied by the water company, naturally we can see the water meter everywhere, that water meter is what? Water meter is a measurement of water usage meter, which shows the corresponding degrees can be used as a water company to calculate the amount of water used by residents as well as the basis for charging fees, we use this to pay the corresponding water bill. So, do you understand the water meter? How is the structure of the water meter? What are the common models of water meters?

Water meter structure

Water meter, it is a meter to measure the flow of water. Mostly the cumulative flow measurement of water. Generally divided into two categories: volumetric water meters and velocity water meters. The accuracy of the former is higher than the latter, but the water quality requirements are high. Record tap water consumption meter, installed in the water pipe, when the user releases water, the table on the pointer or wheel rotation pointed out the amount of water through.

The internal structure of the traditional water meter can be divided into three major parts from the outside to the inside of the shell, sleeve, core. Shell is cast iron, water from the inlet out of the shell through the lower ring space, which is called the "lower ring room". In this annular space above the "upper ring chamber" and the water outlet connected. The bottom of the sleeve has a filter with small holes to filter out debris in the water. Sleeve side of the upper and lower rows of circular holes, the location of the holes just with the shell of the upper and lower ring chamber against the lower row is the water inlet holes, the upper row is the water outlet holes, these two rows of holes are along the tangent direction of the circle diagonally, the water from the lower row of holes along the tangent direction of the water flowing in, it is bound to form a rotating water flow, which is very important for the work of the water meter. The inner core is divided into upper, middle and lower layers, what you see from the glass window is the upper layer, only the pointer and dial. In fact, the most critical is the lower layer, which has a plastic wheel, the wheel has many plastic blades, called "impeller". Impeller is located in the casing of the lower hole in the formation of the rotating flow, water impact on the wheel around the blade, resulting in torque, so that the impeller rotates. The bigger the faucet is open, the faster the water flows, the faster the impeller spins.

The shaft of the impeller goes up vertically to the middle level, and there is a pinion above the shaft, which meshes with the "decimal number gear" to accumulate the number of revolutions." Decimal number gear" role is when the single-digit gear to turn ten turns, the ten-digit gear will turn a circle. In other words, for every revolution of the single-digit gear, the tenth-digit gear makes one tenth of a revolution. The single-digit gear is the active player and is relied upon to drive the decimal gear. In fact, each level of decimal with two pairs of gears to complete, in order to rotate in the same direction, one of the pair of ratios is 9:30, the other pair is 10:30, the two pairs of series together, the total ratio is the product of these two, that is, 0.099999, can be completely approximated as 0.1. According to this calculation, if you want to read seven digits (read four before the decimal point is the black scale, read three after the decimal point is the red scale ), it would take 12 pairs of gears. Plus some other uses, in this small space in the middle to squeeze into 18 shafts and 34 gears, can also be considered a high-density installation. This type of water meter with its simple and inexpensive, can be used for a long time in a humid environment without maintenance, and do not use power, power outages do not affect the work, such advantages make it a long time for us to serve.

Model of water meter

The model of water meter is expressed in letters, and the specifications are expressed in numbers, representing the nominal caliber. For example: LXL-80 indicates the horizontal screw-wing water meter. Nominal caliber of 80 that the horizontal screw-wing water meter, nominal caliber of 80mm. the following is a detailed classification:

1, rotary-wing wet cold water meter (pointer): Model LXS-15C, LXS-20C, LXS-25C, LXS-40C, LXS-50C, LXS-80C, LXS-100C, LXS-150C, the relative caliber (mm), the corresponding caliber (mm). The corresponding caliber (mm) is 15,20,25,40,50,80,100,150.

2, rotary-wing wet cold water meter (wheel pointer combination type): models are LXS-15E, LXS-20E, LXS-25E, LXS-40E, LXS-50E, LXS-80E, LXS-100E, LXS-150E The corresponding caliber (mm) is 15,20,25,40,50,80,100,150.

3. Rotary-wing liquid-sealed cold water meter (word wheel and dial liquid-sealed): Model LXS-15F, LXS-20F, LXS-25F, LXS-40F, LXS-50F, LXS-80F, LXS-100F, LXS-150F, LXS-100F, LXS-150F, LXS-100E, LXS-100E, LXS-100E, LXS-100E, LXS-100E, LXS-150E, LXS-150E, LXS-50E, LXS-50E, LXS-50E, LXS-100E, LXS-100E, LXS-100E, LXS-100E, LXS-150E. 80F2, LXS-100F2, LXS-150F2, the corresponding caliber (mm) is 15,20,25,40,50,80,100,150.

5, rotary dry cold water meter (wheel, pointer combination): Model LXSG-15E, LXSG-20E, LXSG-25E, corresponding caliber (mm) is 15,20,20,50,80,100,150.

6, rotary dry cold water meter (word wheel, pointer combination and beveled frame reading type): models LXSG-15E2, LXSG-20E2, LXSG-25E2, the corresponding caliber (mm) is 15,20,25.

7, screw wing cold water meter (word wheel, pointer combination): models LXL-50E, LXL-50E, LXL-20E, LXL-25E, corresponding caliber (mm) is 15,20,25.

7, screw wing cold water meter (word wheel, pointer combination): models LXL-50E, LXL-50E, LXL-50E, LXL-25E, the corresponding caliber (mm) is 15,20,25. LXL-50E, LXL-80E, LXL-100E, LXL-150E, LXL-200E, the corresponding caliber (mm) is 50, 80, 100, 150, 200.

8, Screw-wing type cold water meter (word wheel, pointer combination and movement can be detached and replaced type): Model LXL-50E2, LXL-80E2, LXL-100E2, LXL-100E2, LXL-100E2, LXL-100E2, LXL-100E2, LXL-100E2 and LXL-100E2. LXL-100E2, LXL-150E2, LXL-200E2, the corresponding caliber (mm) is 50, 80, 100, 150, 200.

9. Screw-wing cold water meter (screw-wing vertical type): Model LXL-50E3, LXL-80E3, LXL-100E3, LXL-150E3, the corresponding caliber (mm) is 50, 80, 100, 150, 200.

10, rotary compound cold water meter: Model LXS-80Z, LXS-100Z, LXS-150Z, the corresponding caliber (mm) is 80, 100, 150.

11, intelligent IC card cold water meter (electromagnetic induction electromechanical conversion type): LXS-15K, LXS-20K, LXS-20K, LXL-150E3, the corresponding caliber (mm) is 80, 100, 150. LXS-20K, LXS-25K, the corresponding caliber (mm) is 15, 20, 25.

12, intelligent IC card cold water meter (double reed switch electromechanical conversion type): LXS-15K2, LXS-20K2, LXS-25K2, the corresponding caliber (mm) is 15, 20, 25.

13, intelligent IC card Cold water meter (base form reed switch electromechanical conversion, and radio frequency card type): LXS-15K3, LXS-20K3, LXS-25K3, the corresponding caliber (mm) is 15, 20, 25.

Despite the variety of models of water meters, different forms, we need to pay attention to is the amount of water consumption, life is not inexhaustible, water plays an important role in our Water plays an important role in our life. Water plays an important role in our life, it is the source of life, is indispensable to human survival and development of one of the most important material resources. We can't live without water for a moment, and water is the most important material for human life. Therefore, we all need to rationalize the use of water, water conservation, to protect the earth's precious water resources.