Midwater trawl keed selectivity device

The utility model provides a midwater trawl keed selectivity device, adopt the rigidity ring, toper separating net, manrope and taper joint net, characterized by toper separating net is square mesh, toper separating net main aspects are fixed in on the rigidity ring, the rigidity ring and the body net of toper separating net main aspects are connected, a rigidity ring is connected to toper separating net tip, the rigidity ring diameter of toper separating net tip is 12 of toper separating net main aspects rigidity ring diameter, the rigidity ring and the taper joint net tip of toper separating net tip are connected, the keed is connected to taper joint net main aspects, the mesh of taper joint net is the same with the mesh of keed, body net with net between the bag 4 manropes of equipartition and be connected, manrope length = toper separating net knot length + taper joint net knot length that vertically contracts that vertically contracts. The utility model overcomes the present selectivity device structure