PH value online monitoring device for synthetic reaction tank

The utility model relates to the technical field of PH value on-line monitoring devices, in particular to a PH value on-line monitoring device for a synthetic reaction tank, which comprises a stainless steel reaction tank, a liquid baffle and a PH meter probe, the liquid baffle is mounted on the inner side wall of the stainless steel reaction tank, a hanging sleeve is mounted on the liquid baffle, and the PH meter probe is mounted on the hanging sleeve. The hanging sleeve and the liquid baffle are connected through a hanging structure, a central through hole is formed in the hanging sleeve, a protective sleeve is arranged in the central through hole, and the protective sleeve and the hanging sleeve are connected through a limiting structure. The protective sleeve and the hanging sleeve are convenient to mount and dismount, the PH meter probe is in threaded connection with the protective sleeve through the external thread and the internal thread groove, so that the PH meter probe is convenient to take down, th