The invention belongs to
aquaculture machinery, and relates to a horizontal water
tilling machine which mainly comprises a motor, reduction gearboxes, an
impeller and a floating body. The reduction gearboxes include a primary reduction gearbox and a secondary reduction gearbox, the primary reduction gearbox is integrated with the motor, an output shaft of the primary reduction gearbox drives a bevel
pinion, the bevel
pinion drives a
bevel gear wheel, the
bevel gear wheel and a cylindrical
pinion are coaxial, the cylindrical pinion drives a cylindrical
gear wheel, the output shaft penetrates through a seal, then extends out of one side or two sides of a gearbox body and drives the
impeller to rotate, and the integral horizontal water
tilling machine floats on a water surface owing to the floating body. The primary reduction gearbox is connected with the secondary reduction gearbox by a
flange, and the positioning dimension of a
joint surface of the
flange is identical to that of a
joint surface of a
flange of a motor of an aerator. The horizontal water
tilling machine has the advantages that the horizontal water tilling machine is applied to
aquaculture, when fish and
shrimp are young,
oxygen consumption is low, the water tilling machine can be started to enable water to flow, the quality of the water of a pond is improved, and the water tilling machine is low in
power consumption; and when the fish and
shrimp grow to a certain degree, the
oxygen consumption is increased, the pond can be aerated as needed by means of disassembling the primary reduction gearbox and using the horizontal water tilling machine with the motor of the aerator, and other structural change is omitted.