Aac Acoustic Technologies (shanghai) Co., Ltd.

Tongji University

Beijing Xiaomi Robot Technology Co., Ltd.

Shanghai Ceo Environmental Protection Technology Co., Ltd.

Chunjiang Li

Fengting Li

Bingru Zhang

Liang Jiang

Yufei Lu

Xianwei Qu

Chuiyou Zhou

This invention provides a linear driving mechanism having a housing, front and rear covers fixed at opposite ends of the housing, a stator arranged inside the housing, and a hollow rotor arranged inside the stator, driven by the stator to rotate. The linear driving mechanism further includes a rolling lead screw fitted inside the rotor, a first bearing, and a second bearing. The rolling lead screw includes a central screw rod and a screw nut. The screw nut is fixedly sleeved around the inner peripheral side of the rotor near the front cover. The linear driving mechanism of the present invention can enhance the integration of the rolling lead screw and rotor to reduce the volume space of the linear driving mechanism, meeting the demand for miniaturization.

Linear driving mechanism

A planetary roller screw linear actuator includes a shell with a receiving cavity, a driving assembly fixed in the receiving cavity, and a rotor received in the receiving cavity and driven by the driving assembly to rotate. The rotor includes a hollow shaft rotatably connected to two ends of the shell, a planetary screw rotating body in transmission connection to the shaft, and an extension rod in transmission connection to the planetary screw. The shaft is made of a magnetic material. A detection position magnet is fixed to an end of the shaft and an induction assembly is fixed to the shell and spaced from the magnet. An axial projection of the magnet is located in the shaft. A magnetic field of the magnet is not affected by an external magnetic field, and a position of the rotor is accurately determined.

Planetary roller screw linear actuator

A corrosion inhibitor for a soft water circulation heating and cooling system, wherein the corrosion inhibitor is pentapentanol core hyperbranched macromolecule functionalized by isothiourea and carboxyl, which has a chemical formula of CHO{COC(CH)[CHOCOCHCH(COOH)SC(NH)NH]}. The corrosion inhibitor provided by the present invention is non-phosphorus, biodegradable, non-toxic, low in cost and has good corrosion inhibition effect. Moreover, it has excellent corrosion inhibition performance for circulating heating and cooling systems using soft water as the water source, and can significantly improve the reuse rate of circulating water. The present invention also provides a preparation method of the corrosion inhibitor, which is simple, easy to obtain raw materials and easy to industrialize.

Corrosion inhibitor for soft water circulation heating and cooling system and preparation method of corrosion inhibitor

Growing community of inventors

Shanghai, China

Chunjiang Li