Abstract: An electric toothbrush head, including: a housing, wherein the housing is provided with a mounting cavity and a mounting hole communicated with the mounting cavity; a transmission assembly, wherein the transmission assembly is arranged in the mounting cavity and comprises a first transmission rod, a second transmission rod and a third transmission rod, one end of the first transmission rod, one end of the second transmission rod and one end of the third transmission rod are rotatably connected through a rotating shaft, and the other end of the third transmission rod is hinged in the mounting cavity; and a cleaning head, wherein the cleaning head is rotatably mounted in the mounting cavity from the mounting hole, a bottom of the cleaning head is eccentrically provided with a first rotating groove, and another end of the second transmission rod is arranged in the first rotating groove.

Abstract: An intra-cavity circulation heat perfusion apparatus, comprising a casing, an electromagnetic induction heating means, and a controller. The electromagnetic induction heating means comprises a tray and an electromagnetic induction coil; the tray is used for bearing a heating tank; a master control unit of the controller controls the electromagnetic induction coil to be electrified to heat the heating tank, so as to indirectly heat a medicinal liquid in a liquid storage chamber; a data acquisition unit is used for acquiring medicinal liquid temperature values of the heating tank, a liquid outlet pipeline, and a liquid return pipeline and transferring same to the master control unit; the master control unit controls a power control unit according to the medicinal liquid temperature values to control a heating power of the electromagnetic induction coil.

Abstract: There is provided a method of dynamic control for a bottom blowing O2—CO2—CaO converter steelmaking process. In the process, O2 is adopted as a top blowing gas, a mixed gas O2+CO2 is adopted as a bottom blowing carrier gas to inject lime powders into the converter from a bottom blowing tuyere. The ingredients of the molten steel in the converter steelmaking process are predicted based on the conservation of matter, in combination with the ingredient data of charged molten iron, the ingredient data of the converter gas in the converter blowing process, and working conditions of the bottom blowing device. The top blowing oxygen amount, the bottom blowing gas ratio and the flow rate of lime powder are dynamically adjusted stage by stage according to requirements for target ingredients at the end point of blowing.

Abstract: Provided is a circulation pipeline (10) for intracavity hyperthermic perfusion, the circulation pipeline comprising a heating tank (100), a liquid intake pipeline (101), a liquid discharge pipeline (102), a circulating pump (200), a pre-filling pipeline (103), a liquid return pipeline (104), a cavity entry pipeline (105) and a cavity exit pipeline (106), wherein a liquid storage cavity (100a) is formed in the heating tank (100), and the liquid intake pipeline (101) is in communication with the liquid storage cavity (100a). A medicinal liquid enters the liquid storage cavity (100a) of the heating tank (100) through the liquid intake pipeline (101).

Abstract: An intra-cavity circulation heat perfusion apparatus, comprising a casing, an electromagnetic induction heating means, and a controller. The electromagnetic induction heating means comprises a tray and an electromagnetic induction coil; the tray is used for bearing a heating tank; a master control unit of the controller controls the electromagnetic induction coil to be electrified to heat the heating tank, so as to indirectly heat a medicinal liquid in a liquid storage chamber; a data acquisition unit is used for acquiring medicinal liquid temperature values of the heating tank, a liquid outlet pipeline, and a liquid return pipeline and transferring same to the master control unit; the master control unit controls a power control unit according to the medicinal liquid temperature values to control a heating power of the electromagnetic induction coil.

Abstract: Provided is a circulation pipeline (10) for intracavity hyperthermic perfusion, the circulation pipeline comprising a heating tank (100), a liquid intake pipeline (101), a liquid discharge pipeline (102), a circulating pump (200), a pre-filling pipeline (103), a liquid return pipeline (104), a cavity entry pipeline (105) and a cavity exit pipeline (106), wherein a liquid storage cavity (100a) is formed in the heating tank (100), and the liquid intake pipeline (101) is in communication with the liquid storage cavity (100a). A medicinal liquid enters the liquid storage cavity (100a) of the heating tank (100) through the liquid intake pipeline (101).