CN205720130U

CN205720130U - A kind of electromagnetic agitation titrator

Info

Publication number: CN205720130U
Application number: CN201620573438.3U
Authority: CN
Inventors: 张嘉玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-15
Filing date: 2016-06-15
Publication date: 2016-11-23
Anticipated expiration: 2026-06-15

Abstract

This utility model relates to a kind of electromagnetic agitation titrator, for chemical experiment.Including magnetic stirring apparatus, also include burette stand, burette clamp, mobile card.Burette stand is perpendicularly fixed in the upper plane of magnetic stirring apparatus, burette stand is provided with mobile card, mobile card moves up and down the level altitude regulating burette along burette stand, burette clamp one end is inserted in mobile card, the other end is bare terminal end, for clamping burette, being provided with screw at bare terminal end, screw is used for regulating the degree of tightness folding and unfolding degree of bare terminal end.Provide the benefit that: laboratory technician is no longer necessary to right hand level shake conical flask, and the control burette operation of left hand one hand can be carried out more flexibly and comfortably and distinguish that color operates with binocular, by such design, can reach to liberate laboratory technician's right hand and the purpose of further coordinated manipulation, so that the collected record that experimental data is much sooner, making experimental result more accurate, conventional efficient is improved.

Description

A kind of electromagnetic agitation titrator

Technical field

This utility model relates to a kind of electromagnetic agitation titrator, for chemical experiment.

Background technology

Titration be a kind of chemistry experiment operating be also the means of a kind of quantitative analysis, it is by the quantitative response of two kinds of solution Determine the content of certain solute.In the titration of two kinds of solution, it is known that the solution of concentration is contained in burette, unknown concentration Solution is contained in the conical flask of lower section, needs sensitive indicator to carry out completing of Indicator Reaction.Drip in advance in conical flask Indicator, when reaction completes, can quickly become another kind of color, and such experimenter just can dash forward according to the color of volumetric soiutions Becoming the titration end-point determining reaction, titration operation needs both hands close fit.First, burette should be vertically sandwiched in titration On pipe support, the right hand is responsible for dripping testing liquid, and as used acid tube, left hand is nameless and pinkie bends to the palm of the hand, gently Clamp acid tube, with its excess-three accuse piston processed rotation.But it should be noted that it is not pulled outwardly piston in order to avoid extracting piston and causing leakage Liquid, does not too detain inward yet, in order to avoid causing piston rotation difficulty, it is impossible to operation is freely.As used alkali pipe, left hand is unknown Refer to and pinkie clamp alkali pipe, thumb and forefinger at position, bead place toward pinching latex tubing, left and right on one side, make solution from The other gap of bead is flowed out, and the right hand is responsible for ceaselessly shaking conical flask, solution should be made to circle to same direction, left and right Rotating, but do not make bottleneck contact burette, solution also must not spill.Simultaneously need to the right hand uninterruptedly and evenly level is shaken Dynamic conical flask, in two close attention observation solution to be measured instillation conical flasks, solution to be measured instills the change of some surrounding medium color Change.

But, this two traditional handss operate simultaneously, are difficult to real accurate grasp in laboratory technician's short time consummately.In reality In the operation of border, laboratory technician's on the one hand left hand accurately to control the injection of volumetric solution, and on the one hand the right hand will uninterruptedly and evenly water Yawing moves conical flask, simultaneously two also need to intently observe conical flask in solution to be measured instill some surrounding medium color change Change.These operations are difficult to coordinate to be accurately finished simultaneously, cause experimental implementation difficulty to increase, it is judged that the error of titration end-point increases Greatly, cause the error titrating liquid measure, thus introduce the error of digital independent.In sum, distinct program and in various degree error Difference add up, all can affect final experimental result.

Summary of the invention

The deficiency existed in view of prior art, this utility model provides a kind of electromagnetic agitation titrator, it is achieved that be not required to Want right hand level to shake conical flask, only control burette with left hand one hand and just can complete the program of experimental implementation.

This utility model designs for achieving the above object, be the technical scheme is that a kind of electromagnetic agitation titrator, bag Include magnetic stirring apparatus, it is characterised in that: also including burette stand, burette clamp, mobile card, described burette stand is perpendicularly fixed at In the upper plane of magnetic stirring apparatus, being provided with mobile card on burette stand, mobile card moves up and down along burette stand and regulates The level altitude of burette, burette clamp one end is inserted in mobile card, and the other end is bare terminal end, is used for clamping burette, Being provided with screw near clamping end, screw is used for regulating the degree of tightness folding and unfolding degree of bare terminal end.

The beneficial effects of the utility model are: by setting a burette stand in magnetic stirring apparatus upper plane side, Set a height-adjustable burette clamp on burette stand, thus provide a fixed bit for burette so that testing Cheng Zhong, is fixed on the surface of the upper conical bottle of magnetic stirring apparatus by burette, and laboratory technician is no longer necessary to the shake taper of right hand level Bottle operation, carries out left hand one hand titration operation more flexibly and comfortably and binocular distinguishes that color operates.By such design, Ke Yida To liberation laboratory technician's right hand and the purpose of further coordinated manipulation, so that the collected record that experimental data is much sooner, make Experimental result is more accurate, and conventional efficient is improved.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model；

Fig. 2 is that of the present utility model use implements illustration.

Detailed description of the invention

As it is shown in figure 1, a kind of electromagnetic agitation titrator, including magnetic stirring apparatus 1, also include burette stand 2, burette clamp 3, card 4 is moved.

Burette stand 2 is perpendicularly fixed in the upper plane of magnetic stirring apparatus 1, is fixed by screw 5 on burette stand 2 Movement card 4, regulates screw 5, makes movement block 4 and moves up and down the level altitude regulating burette along burette stand 2.

Being inserted into burette clamp 3 one end in mobile card 4, the other end is bare terminal end, is used for clamping burette, near folder Holding end and be provided with screw 6, screw 6 is used for regulating the degree of tightness folding and unfolding degree of bare terminal end.

The seating surface of the upper taper bottle of agitator 1 is white plane, it is simple to observe titration end-point during discriminated operant The sudden change of Shi Yanse.

During use, as in figure 2 it is shown, the conical flask 7 that first will be equipped with solution to be measured is placed on the white of magnetic stirring apparatus 1 top disc In color plane, then mobile card 4 and burette clamp 3, make burette clamp 3 be positioned at the top of burette stand 2, then by burette Screw 6 through the bare terminal end of burette clamp 3, is then tightened so that it is clamp burette 8 from lower to upper in the top of 8.Blocked by mobile 4 vertically move and burette clamp 3 moving horizontally in it moves card 4, adjusts the fixed position of burette 8, makes titration The titration mouth of pipe of pipe 8 lower end is located exactly at the surface of conical flask 7 bottleneck, after adjusting the position of burette 8, by suitable for screw 5 Clockwise rotates to be tightened.

When screw 6 turns clockwise, the bare terminal end of burette clamp 3 can be tightened up；When screw 6 rotates counterclockwise, can one Determine degree and decontrol the bare terminal end of burette clamp 3；So, the burette 8 for clamping different size size provides conveniently.

Claims

1. an electromagnetic agitation titrator, including magnetic stirring apparatus (1), it is characterised in that: also include burette stand (2), titration Pipe clamp (3), mobile card (4), described burette stand (2) is perpendicularly fixed in the upper plane of magnetic stirring apparatus (1), at burette Frame (2) is provided with mobile card (4), and mobile card (4) moves up and down the level altitude regulating burette, drips along burette stand (2) Fixed tube folder (3) one end is inserted in mobile card (4), and the other end is bare terminal end, is used for clamping burette, near clamping end Being provided with screw (6), screw (6) is used for regulating the degree of tightness folding and unfolding degree of bare terminal end.