Leak-proof sealing loose joint ball valve

The utility model provides a leakproof sealing loose joint ball valve which comprises a shell, a valve cavity is formed in the shell, a valve element is rotatably connected in a water inlet of the valve cavity, a filter cartridge is fixedly connected to the outer wall of the shell, a filter screen is arranged in the filter cartridge, the end of the filter screen is located in the valve cavity, and a discharging barrel is fixedly connected to the end, away from the shell, of the filter cartridge. A discharging core is rotationally connected into the discharging barrel, a pressure detector is fixedly connected to the inner wall of a water outlet of the shell, a supporting shaft is rotationally connected to the outer wall of the shell, a power motor is connected to the upper end of the supporting shaft, the power motor is electrically connected with the pressure detector through a controller, and a fixing block is fixedly connected to the inner wall of the shell; the fixing block is slidably connected with an ab