Conveniently-cleaned capillary viscometer with auxiliary heating function

The utility model discloses a conveniently-cleaned capillary viscometer with an auxiliary heating function. The capillary viscometer comprises a vertically arranged liquid adding pipe, a capillary tube, an exhaust pipe, and a capillary viscometer body which is formed by a U-shaped conduit communicated with the liquid adding pipe, the capillary tube and a lower pipe orifice of the exhaust pipe, wherein the capillary viscometer body is arranged in a transparent heat insulation heating jacket in a sealing way; the upper side wall and the lower side wall of the transparent heat insulation heating jacket are respectively provided with a liquid inlet pipe joint and a liquid outlet pipe joint; the liquid adding pipe, the capillary tube and an upper pipe orifice of the exhaust pipe extend out of the top wall of the transparent heat insulation heating jacket in a sealing way; the bottom of the U-shaped conduit is communicated with a liquid discharge pipe downwards; the liquid discharge pipe extends out of the bottom wall of the transparent heat insulation heating jacket in a sealing way; the liquid discharge pipe is provided with a liquid discharge valve at the part outside the bottom wall of the transparent heat insulation heating jacket. The capillary viscometer has the advantages that the structure of the existing capillary viscometer is improved, so that the problems that the existing capillary viscometer needs to be matched with a constant temperature water bath when being used for measuring the viscosity, and the capillary viscometer is difficult to clean after being used can be solved.