Hydraulic strength testing tool for fire extinguisher

The utility model discloses a fire extinguisher hydraulic strength testing tool, which comprises a water tank, a pump body and a water inlet pipe, the bottom of the water inlet pipe is fixedly provided with a filter screen, the top of the water inlet pipe is fixed on the pump body, the water tank is provided with a filter mechanism, the filter mechanism comprises an outer frame and two groups of locking assemblies, and the locking assemblies are fixed on the outer frame. A filter screen plate is arranged on the outer frame, a rubber ring is arranged on the filter screen plate, and the bottom of the water inlet pipe penetrates through the interior of the rubber ring; by means of the designed filtering mechanism, the filter screen plate is installed at the position, close to the top, in the water tank, impurities in the added water can be filtered out when the water is added into the water tank, the filter screen is prevented from being blocked by the impurities, the filter screen plate can prevent external imp