Pressure type pretreatment device

The utility model discloses a pressure type pretreatment device which comprises a barrel body, a barrel cover used for covering the barrel body, a filtering device used for filtering raw water, an input device used for conveying the raw water and cleaning water to the barrel body, an emptying device used for discharging silt impurities and a control device, and the input device and the emptying device are both connected with the control device; the filtering device is arranged on the barrel cover to divide the barrel into an upper cavity and a lower cavity, the emptying device penetrates through the barrel, one end of the emptying device is communicated with an outlet of the upper cavity, the other end of the emptying device is communicated with the outside, the input device is communicated with the upper cavity, and the lower cavity is provided with a sampling port for collecting filtered raw water. By using the pressure type pretreatment device provided by the utility model, the pretreatment desilting time