Passive mechanical prepaid quantitative water-selling water meter

Abstract

The invention relates to a passive mechanical prepaid quantitative water-selling water meter. The passive mechanical prepaid quantitative water-selling water meter comprises a water meter shell, wherein a metering device is arranged at the position, close to the water inlet end, of the water meter shell; a quantitative device is arranged at the position, close to the water outlet end, of the watermeter shell; and the metering device and the quantitative device are in meshed linkage through a transition gear. Water quantity statistics and prepaid water amount metering work can be completed without arranging a circuit board, and the safety performance of the water meter is improved; meanwhile, a positioning valve structure which is composed of a valve body and a valve base is adopted, wherein the valve body has a first early warning bayonet and a second early warning bayonet, and the valve base has a stepped clamping block; the positioning valve structure is connected with a quantitative shaft, so that automatic valve opening can be realized when the water is purchased; and meanwhile, the water passing amount between the valve base and a water passing base can be reduced through thecooperation of the first early warning bayonet and the clamping block when the water is almost used up, so that a user can be reminded to buy water in a manner of reducing the water outlet amount.

Description

technical field [0001] The invention relates to the field of instruments, in particular to a passive mechanical prepaid quantitative water meter. Background technique [0002] With the development and progress of society and the increase of urban population and high-rise buildings, the traditional mechanical water meter that requires manual meter reading can no longer meet the growing usage statistics and modern management needs, and the traditional water meter data collection scheme relies on manual to Reading records in front of the dials of each user's home requires a lot of labor, high error rate, and long cycle of statistical data, which greatly hinders the development of the meter reading management system. [0003] At present, although prepaid water meters can realize "pay first, use later", there are still many shortcomings, such as: [0004] 1. Existing prepaid water meters require the control circuit board of the control circuit to be installed in the water meter,...

AI Technical Summary

Problems solved by technology

[0004] 1. Existing prepaid water meters require the control circuit board of the control circuit to be installed in the water meter, and water meters are usually installed in relatively humid environments such as kitchens and toilets. The prepaid water meter is similar to the IC card water meter. Although it can realize prepaid control, it needs to rely on power supply, is expensive, and has technical problems such as waterproof and leakage;

[0005] 2. In the existing prepaid water meter, when the water volume is less than the set water volume parameter, the valve of the water meter is closed immediately. Although the water volume alarm is added to the prepaid water meter in the prior art, the early warning issued is not enough to cause the alarm of the elderly or children at home. Note that the early warning effect cannot be achieved. If there is an urgent need for water, users need to go to the water management department to recharge before they can use water again, which brings great inconvenience to users;

[0006] 3. After the valve of the prepaid water meter in the prior art is closed, the water supply needs to be recharged first, and then the water supply can only be resumed after the professional technician uses a specific tool, or disassembles the inside of the water meter and manually opens the valve, and the whole operation is complicated;

[0007] 4. The existing prepaid water meters do not have an anti-stealing structure. The main reason is because of the design structure of the valves of the existing prepaid water meters. If an anti-stealing structure is added, the overall volume will be large, it will take up space, and it will not be beautiful. inconvenient;

[0008] Existing prepaid water meters require technicians to set quantitative water volume data when selling water quantitatively. The technicians need skilled technology to ensure the accuracy of the set water volume. Once the quantity is exceeded, it cannot be restored, causing inconvenience to both technicians and users.

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