Novel down-mounting ball valve

Abstract

The invention discloses a novel down-mounting ball valve, which is characterized by consisting of a valve body, a valve core assembly, a rotating shaft sealing ring, a rotating shaft, a polytetrafluoroethylene gasket, a water outlet sealing ring, a lower valve cover end face sealing ring, a lower valve cover and a lower valve cover radial sealing ring. The novel down-mounting ball valve has the advantages that: the novel down-mounting ball valve assembly is arranged into an integrated meter shell of a water meter or a heat meter to realize integration of a flow meter and a control valve of the prepayment water meter and the prepayment heat meter; because of the integral structure, the strength, sealing property, high-temperature resistance and high-pressure resistance of the prepayment water meter and the prepayment heat meter are promoted, and the highest bearing pressure is more than or equal to 4MPa and far higher than the pressure limit of industrial standard high-pressure meter 2.5MPa (common heat meter 1.6MPa); on-line (use site) integral disassembly, maintenance and replacement can be performed; parts such as a speed reducer, a control circuit and the like driven by the ball valve are not involved during maintenance and replacement; and the operation is performed directly from the bottom of the ball valve, and disassembly of other parts is not needed.

Description

(1) Technical field: [0001] The invention is a novel bottom-mounted ball valve, which is especially suitable for the application occasions of centralized water supply and heating metering and charging using prepaid water meters and heat meters as control valves. (2) Technical background: [0002] With the rapid development of my country's national economy, the demand for resources is increasing, especially water resources and oil resources. The per capita possession of water resources in my country is only 2,710 cubic meters, about 1 / 4 of the world's per capita share, ranking 88th in the world. Some foreign countries have already adopted water recycling measures for industrial water use, and the water reuse rate is as high as 70% to 90%, while most cities in China still stay at the level of 20% to 50%. Due to the backward technology, the industrial water quota is far higher than the foreign advanced level. China accounts for 1.5% of the world's oil reserves, 4.5% of the wo...

AI Technical Summary

Problems solved by technology

At present, domestically produced prepaid water meters and prepaid heat meters, ball valves (electric ball valves) basically use ordinary ball valves, whose performance is far from meeting the needs of heat meters, and is prone to defects such as control failure, leakage, and blockage; and the assembly method It is stacked and assembled along the direction of water flow. Once used, it cannot be debugged, repaired and replaced online (that is, at the use site).

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