Fluid supercharger

The utility model discloses a fluid pressurizer which comprises a connecting pipe, the lower end of the connecting pipe is fixedly connected with a filter cavity, the lower end of the filter cavity isfixedly connected with a Laval nozzle, the upper end of the Laval nozzle is fixedly connected with a filter cover, the filter cover is located in the filter cavity, and connecting columns are evenlydistributed between the lower ends of the filter cavity. An opening is formed between the connecting columns, external threads are arranged on the outer side of the filtering cavity and located abovethe connecting columns, a fixing plate is fixedly connected to the outer side of the lower end of the filtering cavity, a sealing groove is fixedly connected to the upper end of the fixing plate, theouter side of the filtering cavity is sleeved with a sealing cover, and the lower end of the sealing cover can be inserted into the sealing groove. The inner diameter of the upper end of the sealing cover is the same as the oute