Pump for circulating a fluid, this pump comprising: - a casing, - a turbine arranged in the casing and designed to perform rotational movements relative to the casing, the turbine comprising: - a body (2, 8, 81, 82) designed to perform rotational movements, - a hollow central part (8a, 81a, 82a), passing right through the body and intended for the passage of fluid through the turbine, and - at least one blade (4, 5, 6, 7) arranged on the inner wall of the body, in the hollow central part, and designed to cause the fluid to flow, - a rod arranged in the central axis of the turbine (8, 81, 82) at a fluid entrance so as to reduce backflows of fluid, the rod being fixed by one end to an inlet chamber which is firmly fixed to the casing, characterized in that the pump further comprises: - an inductor equipped with guide vanes in order to make the flow of the fluid linear; this inductor being arranged upstream of the turbine with respect to the direction of flow of the fluid; - a diffuser equipped with diffusion vanes in order to make the flow of fluid linear and increase the pressure of the fluid; this diffuser being arranged downstream of the turbine so as to evacuate the fluid outwards from the turbine, converting the kinetic energy created by the turbine into potential energy; and - a straightener equipped with straightener vanes and an outlet orifice having a diameter less than the inlet diameter of the straightener, the straightener vanes directing the fluid from the diffuser to the orifice so as to increase the speed and give the fluid a predefined profile when leaving the orifice. - a casing, - a turbine arranged in the casing and designed to perform rotational movements relative to the casing, - a body (2, 8, 81, 82) designed to perform rotational movements, - a hollow central part (8a, 81a, 82a), passing right through the body and intended for the passage of fluid through the turbine, and - at least one blade (4, 5, 6, 7) arranged on the inner wall of the body, in the hollow central part, and designed to cause the fluid to flow, - a rod arranged in the central axis of the turbine (8, 81, 82) at a fluid entrance so as to reduce backflows of fluid, the rod being fixed by one end to an inlet chamber which is firmly fixed to the casing, characterized in that the pump further comprises: - an inductor equipped with guide vanes in order to make the flow of the fluid linear; this inductor being arranged upstream of the turbine with respect to the direction of flow of the fluid; - a diffuser equipped with diffusion vanes in order to make the flow of fluid linear and increase the pressure of the fluid; this diffuser being arranged downstream of the turbine so as to evacuate the fluid outwards from the turbine, converting the kinetic energy created by the turbine into potential energy; and - a straightener equipped with straightener vanes and an outlet orifice having a diameter less than the inlet diameter of the straightener, the straightener vanes directing the fluid from the diffuser to the orifice so as to increase the speed and give the fluid a predefined profile when leaving the orifice. - a rod arranged in the central axis of the turbine (8, 81, 82) at a fluid entrance so as to reduce backflows of fluid, the rod being fixed by one end to an inlet chamber which is firmly fixed to the casing, - an inductor equipped with guide vanes in order to make the flow of the fluid linear; this inductor being arranged upstream of the turbine with respect to the direction of flow of the fluid; - a diffuser equipped with diffusion vanes in order to make the flow of fluid linear and increase the pressure of the fluid; this diffuser being arranged downstream of the turbine so as to evacuate the fluid outwards from the turbine, converting the kinetic energy created by the turbine into potential energy; and - a straightener equipped with straightener vanes and an outlet orifice having a diameter less than the inlet diameter of the straightener, the straightener vanes directing the fluid from the diffuser to the orifice so as to increase the speed and give the fluid a predefined profile when leaving the orifice.