The invention relates to the technical field of ship construction, in particular to a sea chest
grating which comprises coamings, lug plates, connecting bolts,
grating plates, hinge seats, bent plates, connecting cross rods, supporting plates, limiting grooves, cleaning mechanisms, anti-falling mechanisms and locking mechanisms. According to the novel sea chest
grating, the grating plate is in a slotted hole opening form, the size of the openings needs to be designed according to the size of a pump body
impeller runner, it is guaranteed that the size of sundries or particles is smaller than the size of the
impeller runner, the hinge is installed close to the middle position, and the two supporting legs and a ship body structure are welded and fixed. The balance function of a balancing weight can be replaced by the
self weight of the grille, in addition, after the grille is closed, a straight pin is inserted into a bolt opening for locking,
underwater operation is facilitated, the grille is low in cost and easy to manufacture, and the problem that the grille is strenuous to open and close
underwater is solved through redesign of the grille form.