The structure of the rotor type water meter is divided into wet and dry type. There are three kinds of water meter counters: - is the pointer, the second is the word wheel; three is the combination.
Rotor-type water meter mainly watch, water net, measuring institutions, indicating institutions and other components. The metering mechanism mainly consists of impeller box, impeller, impeller shaft, regulating plate. Indicators are mainly dial, pointer, triangular pointer or word wheel, transmission gear and other components.
The principle of the action of the rotor type water meter is that the water enters the inner surface of the case through the water inlet of the water meter, enters the impeller box from the inlet hole of the impeller box, impinges on the impeller, starts the rotation of the impeller, Through the case outlet to the pipeline, the lower part of the impeller by the thimble support. After the impeller rotates, through the impeller central axis, so that the upper part of the sun gear also rotate, drive the impeller gear within the gear, according to the provisions of the speed ratio of rotation, driving the pointer on the dial. After the trigonometric pointer starts to rotate, the other gears and the upper pointer are driven in decimal way. According to the scale value on the dial, the clockwise direction is rotated from 0 to start measurement.
Case is the water meter bunker, but also the mother of the water meter. Water meter components installed in the case, the case to protect the water meter parts of the operation. Inlet and outlet ends of the pipe joints or flanges connected to the pipeline, the import and export of caliber is the diameter of the meter, the case requires a higher pressure and tensile strength.
The water filter network is installed on the outside of the impeller box of the inlet end of the water meter. The measured water is filtered through the inlet line through the inlet line before entering the impeller box. The filter network is used to remove impurities and sediment in the water, to avoid water meter failure and damage.
Impeller box has three roles: First, the water from the inlet hole into the impeller and then out of the outlet; the second is to protect the impeller rotation; third is to adjust the impeller speed. The lower part of the impeller box has a regulating hole and a regulating plate, the size of the adjusting hole area is proportional to the impeller speed, and the level of the impeller is inversely proportional to the rotational speed. Because the impeller assembly at the lower end of the impeller box in the lower edge of the inlet, the impeller to the upward, will make the water flow part of the impulse not impeller, it will slow down, and vice versa faster. Thereby adjusting the measurement error of the water meter.
The impeller is a sensitive element of the water meter, which changes the kinetic energy of the water to the speed and passes it through the impeller shaft to the indicating mechanism. impeller
Mounted on the impeller shaft on the upper part of the impeller case. The blades of the rotor type are straight.
The impeller is mounted on the impeller shaft and is equipped with a transmission gear connected to the indicating mechanism for transmitting the speed of the impeller.
Dial is used to indicate the water table indexing value. Dial surface is white, less than 1m3 sub-scale value is red, 1m3 above the scale value is black. Dial should comply with the relevant standards. The pointer is mounted on the upper end of the gear shaft on the upper part of the dial, with red and black and one of the dial indicator values. There is also a sensitive limit pointer, also known as a red triangle pointer. Its role and the second hand of the watch is the same as the identification of water signs. It moves, the other indicators are moving, if it does not move, the other indicators are not moving.
Rotor-type water meter for small and medium-sized water supply within the small and medium-sized flow measurement, household water meters are such.
The principle of the action of the rotor type water meter is that the water enters the inner surface of the case through the water inlet of the water meter, enters the impeller box from the inlet hole of the impeller box, impinges on the impeller, starts the rotation of the impeller, Through the case outlet to the pipeline, the lower part of the impeller by the thimble support. After the impeller rotates, through the impeller central axis, so that the upper part of the sun gear also rotate, drive the impeller gear within the gear, according to the provisions of the speed ratio of rotation, driving the pointer on the dial. After the trigonometric pointer starts to rotate, the other gears and the upper pointer are driven in decimal way. According to the scale value on the dial, the clockwise direction is rotated from 0 to start measurement.
Case is the water meter bunker, but also the mother of the water meter. Water meter components installed in the case, the case to protect the water meter parts of the operation. Inlet and outlet ends of the pipe joints or flanges connected to the pipeline, the import and export of caliber is the diameter of the meter, the case requires a higher pressure and tensile strength.
The water filter network is installed on the outside of the impeller box of the inlet end of the water meter. The measured water is filtered through the inlet line through the inlet line before entering the impeller box. The filter network is used to remove impurities and sediment in the water, to avoid water meter failure and damage.
Impeller box has three roles: First, the water from the inlet hole into the impeller and then out of the outlet; the second is to protect the impeller rotation; third is to adjust the impeller speed. The lower part of the impeller box has a regulating hole and a regulating plate, the size of the adjusting hole area is proportional to the impeller speed, and the level of the impeller is inversely proportional to the rotational speed. Because the impeller assembly at the lower end of the impeller box in the lower edge of the inlet, the impeller to the upward, will make the water flow part of the impulse not impeller, it will slow down, and vice versa faster. Thereby adjusting the measurement error of the water meter.
The impeller is a sensitive element of the water meter, which changes the kinetic energy of the water to the speed and passes it through the impeller shaft to the indicating mechanism. impeller
Mounted on the impeller shaft on the upper part of the impeller case. The blades of the rotor type are straight.
The impeller is mounted on the impeller shaft and is equipped with a transmission gear connected to the indicating mechanism for transmitting the speed of the impeller.
Dial is used to indicate the water table indexing value. Dial surface is white, less than 1m3 sub-scale value is red, 1m3 above the scale value is black. Dial should comply with the relevant standards. The pointer is mounted on the upper end of the gear shaft on the upper part of the dial, with red and black and one of the dial indicator values. There is also a sensitive limit pointer, also known as a red triangle pointer. Its role and the second hand of the watch is the same as the identification of water signs. It moves, the other indicators are moving, if it does not move, the other indicators are not moving.
Rotor-type water meter for small and medium-sized water supply within the small and medium-sized flow measurement, household water meters are such.
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