The piston water meter is specially designed for measuring places that have a lot of requirements for measuring accuracy
The piston water meter is equipped with a case. The case is divided into an upper case and a lower case. The inside of the lower case is a metering mechanism. The metering mechanism of a piston water meter mainly consists of a piston chamber, a piston and a piston cover. The movable pull-down rod, the inside of the upper casing is a counting device, the indicator mechanism of the piston water meter counting device adopts the full-character counting method, the pull-up rod matched with the pull-down rod is connected with the word wheel through a transmission mechanism, and the piston cavity Vertical grooves are provided on the inner wall. When there is scale or suspended particles in the measured water quality, the vertical groove on the inner wall of the piston water meter cavity can effectively contain the existence of suspended particles or scale, thereby ensuring the normal rotation of the piston water meter. It not only effectively ensures the throughput of suspended particles in the measured water quality, but also effectively inserts the product's calibration range, so that the first calibration pass rate of the piston water meter can be maintained at a higher level. Greatly reduce the piston water meter is specially used for measuring places that have a large demand for measuring accuracy and a large number of requirements.
1. Product function of piston water meter
1. Automatic charging: pre-paid mode, post-paid mode Water meter pre-paid mode, that is, buy water first and then use water: the initial available water volume of the piston water meter is zero, and the valve is closed. After the user opens an account at the water sales point and purchases water, he receives the user card and inserts the card into the corresponding water meter. The piston water meter reads the amount of water available in the card, and then opens the valve to supply water normally. After the available water in the water meter is used up, the valve is closed, and the user takes the card to the water sales point to purchase water, and then inserts the recharged user card into the piston water meter, and repeats the process for the first time. Post-paid mode, that is, pay for water first: the initial available water volume of the piston water meter is zero, and the valve state is closed. The management department sets the user's maximum allowable first water consumption, which is pre-charged into the user card when opening an account. The user inserts the user card into the corresponding water meter, the piston water meter reads the amount of water available, and then opens the valve to supply water normally. After the available water in the piston water meter is used up, the valve is closed and the user takes the card to the water sales point to pay. The water sales point recharges the user card and repeats the process for the first time.
2. The piston water meter can automatically realize the step water price. The water meter is equipped with a clock and can store water consumption for 12 months. When the user card is inserted into the water meter, the piston water meter will write the monthly water consumption into the user card. Every time a user buys water, the piston water meter system will automatically read the monthly water consumption from the user card and calculate the excess water fee based on the stepped water price, which will be paid when the user purchases water.
3. Piston water meter card replenishment, recovery and transfer function The user card can only successfully trade with the corresponding water meter once for one purchase of water. If the card is lost, the card can be refilled according to the piston water meter software database management function, and the water volume will not be lost or repeated. When the piston water meter needs to be replaced, insert the recovery transfer card into the table, read the data in the table, insert the new table, and the old table information enters the new table. Pneumatic actuator 4. Piston water meter mechanical and electronic two modes display The IC card water meter retains the word wheel and pointer display of the mechanical water meter, and at the same time increases the liquid crystal display. Even if the electronic part fails, the cumulative water consumption can be read according to the display of the mechanical character wheel.
4. The pilot valve is not affected by scale or water pressure, and is safer and more reliable (Patent No. ZL00 2 05851) Generally, IC card water meters use ball valves, and the valve switch is easily affected by scale and water pressure. The ball and the outer wall of the piston water meter ball valve will produce scale when soaked in water for a long time. The scale will increase the frictional resistance, thereby affecting the on-off valve; when the water pressure increases, the resistance of the ball valve will also increase exponentially, which will greatly affect the opening and closing of the valve. Great influence; the cork-type working principle of the pilot valve of the piston water meter is not affected by scale and water pressure; the piston water meter adopts a pilot electric control valve with a combination of magnetic and hydraulic technology, which has very low working power consumption and the valve is in a low-pressure state The opening and closing is reliable and stable. heat sink
5. The base meter, valve, etc. adopt magnetic transmission and special isolation and sealing design, which solves the problem of dynamic sealing and water leakage of ordinary piston water meters. The direct connection between the ball and the motor of the ball valve is generally sealed with a rubber ring. Over time, it is easy to cause aging and deformation, resulting in water leakage; the base meter and valve of the piston water meter use magnetic transmission, and the isolation layer is reinforced and sealed with a copper shell, which can withstand pressure. Up to 35 kg, there will be absolutely no water leakage; polyurethane
6. Anti-attack design: anti-vibration water pipe vibration may cause the water meter to rotate and make the water meter mismeasure. The piston water meter can eliminate the mismeasurement caused by the water pipe vibration.
2. Product features of piston water meter:
1. The piston water meter is hygienic and environmentally friendly, and there is no secondary pollution.
2. Acid and alkali resistance.
3. Both high temperature and low temperature piston water meters will not produce corrosion and exudation.
4. The piston water meter is safe and reliable, and does not contain any toxic elements.
5. The advantages of high precision, anti-interference, and strong reliability.
The piston water meter relates to a high-performance, intelligent, and new-automated monostable piston data transmission smart water meter with automatic metering and charging, data statistics, data analysis, data transmission, and remote real-time control. It includes a base meter, the base meter and the valve body are connected by a flange; the lower part of the piston water meter valve body is provided with a piston valve, the piston valve includes a piston cylinder, a piston, and a pressure balance elastic member. The upper cover of the piston water meter valve is equipped with a balance Road; the upper part of the valve body is equipped with a computer control unit with a wireless transmission module and a monostable controller. The computer control unit receives the pulse signal, the piston water meter and sends instructions to the monostable controller; the monostable controller controls the water blocking head to close and open Balance channel water blocking hole; the instructions sent by the computer control unit of the piston water meter are transmitted to the single-chip memory in the controller, and the single-chip memory sends the data to the display after processing, and the piston water meter transmits the information to the remote computer through the internal GPRS data transmission module .
The piston water meter includes a water meter body, which is characterized in that: a diverter is installed in the lumen of the water inlet pipe port of the piston water meter, and the diverter includes a static fit combined with the inner wall of the water inlet pipe port of the piston water meter. Tubular casing, the lumen of the tubular casing of the piston water meter is divided into front and rear cavities by the annular shoulder machined in the lumen, and the wall of the back section of the lumen is provided with a water outlet hole communicating with the inner cavity of the water meter A piston water meter, a pressure spring set in the valve body, and a valve core worn in the valve body cavity are installed in the back section of the tube cavity; the water facing end surface of the piston water meter valve body is processed with a plurality of and the valve body An axial flow channel is provided in the valve core of the piston water meter, and the end of the flow channel is connected with the inner cavity of the water meter diversion tube through the micro flow guide tube. A flow control valve is provided at the front end.
