39results about "Retort stands/clamps" patented technology

The innovative glass flasks have a standard taper outer joint to fit the most commonly used glassware in chemical laboratories. Unlike the round bottom flasks, the innovative flasks with an external flat bottom can be kept upright on the bench without the flask holder support. The flasks can be held by a corresponding shaped cooling block or heating block to perform multi-flask reactions simultaneously on a magnetic hot plate stirrer without the use of clamps at various temperatures. It also ensures that the magnetic stir bars spin consistently and efficiently on a flat or a shallow hemispherical bottom when the flasks are offset from the center of the magnetic stirrer. The flasks can also resist fracturing under vacuum for solvent distillations.

The invention discloses a clamping and fixing device for a distillation flask. The clamping and fixing device comprises a base and a support rod, wherein the support rod is vertically arranged on the base, a clamp body comprises a fixed frame, the fixed frame is connected with the upper end of the support rod, a first clamping piece and a second clamping piece are transversely arranged at the center of the left side of the inner wall of the fixed frame, a regulating clamping head is arranged at the right side of the fixed frame, the regulating clamping head comprises a regulating shaft, a regulating sleeve and an eccentric cam, a through hole is formed in the right side of the fixed frame, the regulating sleeve is positioned in the through hole, the eccentric cam is arranged at the front end of the regulating shaft, the regulating shaft penetrates through the through hole, the eccentric cam is positioned in the fixed frame, and a flask body of the distillation flask is positioned among the first clamping piece, the second clamping piece and the eccentric cam. The clamping and fixing device overcomes the defect of poor clamping and fixing effects because an existing distillation flask easily deflects when being clamped and fixed, and the clamping and fixing device for the distillation flask is capable of clamping and fixing the flask body of the distillation flask and has good clamping and fixing effects.

The invention discloses a glass distillation separation vessel stabilizing frame, which comprises a bottom support, position adjusting supporting legs, a circular-ring-shaped sliding rail, a sliding block, a stand column, a supporting rod, a screw joint position adjusting piece, a cross beam, a C-shaped clamping part and a rotating shaft positioning piece. A semi-sunken groove is formed in the middle area of the upper surface of the bottom support; an annular sliding rail is fixedly embedded into the inner side of the semi-sunken groove; the sliding block is mounted on the annular sliding rail; one end of the supporting rod is fixedly installed on the sliding block; the supporting rod and the sliding block can move along the annular sliding rail; the bottom of the stand column is installedin the center of the upper half sinking groove of the bottom support in a threaded connection mode; one end of the cross beam is connected with the stand column through the threaded connection position adjusting piece; and the C-shaped clamping part is installed at the other end of the cross beam through the rotating shaft positioning piece. The angle of the clamping part in the stabilizing framecan be adjusted according to the inclination degree of the glass distillation separation vessel, so that the requirements for stabilizing and positioning the vessel with the circular horizontal crosssection are met, compatibility is high, and the glass distillation separation vessel stabilizing frame is suitable for being used and popularized as a limiting stabilizing frame in a laboratory.

The invention discloses a detection system of polychlorophenol in dye, including a shell and a working chamber arranged in the shell, wherein the working chamber is provided with a rotatable connecting shaft, the upper end of the connecting shaft, is rotatably provided with a shaft mounting block, the upper side of the connecting shaft is provided with a rotary table, the lower end face of the rotary table is provided with a buffer chamber with a downward opening, and the shaft mounting block is located in the buffer chamber. The invention realizes the automation of the extraction step in the detection process of polychlorophenol, and can automatically add potassium carbonate solution to the dye. Compared with manual addition, the invention improves the accuracy, ensures the success of subsequent detection and improves the accuracy of detection. After the addition of potassium carbonate solution, the invention can Automatic oscillation improves efficiency.