Jet pump and have well -flushing system of this jet pump

The utility model provides a jet pump and have well -flushing system of this jet pump, jet pump include casing, shutoff end cover, central jet flow pipe and the side direction efflux unit at the one end opening part of casing, the end cover is worn out hermetcally to the one end of central jet flow pipe, and its another pot head is established in the casing, and side direction efflux unit is fixedin between casing and the central jet flow pipe, and the other end of central jet flow pipe exceeds the one end terminal surface that the end cover was kept away from to side direction efflux unit, set up two at least first through -holes on the central jet flow pipe, set up two at least axial passage on the side direction efflux unit, each axial passage's one end link up the one end terminal surface of side direction efflux unit, other end shutoff, seting up two at least second through -holes on the casing, seting up third through -hole and fourth through -hole on each axial passage, each third through -hole corresp