Detachable burette convenient for internal cleaning

Abstract

The invention discloses a detachable burette convenient for internal cleaning, and relates to the technical field of titration equipment. The detachable burette comprises a fixing mechanism; the uppersurface of a first fixing ring is rotationally connected with a first threaded rod; a moving block is in threaded connection with the peripheral side surface of the first threaded rod; one side of the moving block is fixedly connected with a capacity scale; a liquid storage mechanism is in clearance fit with the inner wall of the first fixing ring; an internal thread groove is fixedly connected to the inner wall of a first liquid storage pipe close to the top end; and the upper surface of a hollow circular truncated cone is fixedly connected with a second liquid storage pipe. Through the design of the first liquid storage pipe, the control valve, the second liquid storage pipe, the third liquid storage pipe and the fixing mechanism, the burette can be rapidly disassembled and assembled, the interior of the burette is convenient to clean, the burette cleaning efficiency is greatly improved, meanwhile, through the arrangement of the control valve, a titration reagent can be convenientlyadded into the burette, the phenomenon that a reagent bottle is directly held by a hand to cause flow backward is reduced, and reagent leakage is effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of titration equipment, in particular to a detachable burette for internal cleaning. Background technique [0002] A burette is a volumetric instrument used to accurately dispense an indeterminate amount of liquid. It is made of a slender and uniform glass tube, with a scale on the tube, a pointed mouth at the lower end, and a joint gate in the middle to control the titration speed. When performing a titration experiment, it is necessary to control the amount of titration by controlling the throttle on the burette. When starting the titration, in order to ensure the accuracy of the titration experiment, it is often necessary to fill the titration reagent in the burette to the zero mark. Titrate. [0003] The function of the existing burette is very single, generally a one-piece structure, its size is long, it is not easy to move and take, and it is easy to bump and cause fragmentation. After use, because o...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a detachable burette for internal cleaning, through the first fixed ring, the second fixed ring, a rectangular through hole, an arc guide hole, the first threaded rod, a capacity scale, a liquid storage mechanism, The design of the second threaded rod, inclined support rod, drive ring and spring solves the problem that the existing burette has a single function, cannot be disassembled, is not convenient for internal cleaning, and is not convenient for reading according to the scale line on the burette, which may easily cause experimental errors. It is impossible to flexibly adjust the position of the zero scale line according to the actual position of the liquid level. It is troublesome to clamp and fix the burette by the iron stand, and it is not convenient to flexibly adjust the height of the burette according to the height of the titration volumetric bottle, which increases the labor of the operator. question of strength

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