CN210604539U

CN210604539U - Micro burette capable of automatically adjusting zero

Info

Publication number: CN210604539U
Application number: CN201921399943.0U
Authority: CN
Inventors: 李妍; 丘国华; 李锦坤
Original assignee: HUBEI ACADEMY OF SPACE TECHNOLOGY INSTITUTE OF MEASUREMENT AND TESTING TECHNOLOGY
Current assignee: HUBEI ACADEMY OF SPACE TECHNOLOGY INSTITUTE OF MEASUREMENT AND TESTING TECHNOLOGY
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-05-22
Anticipated expiration: 2029-08-27

Abstract

The utility model relates to a but automatic zero setting's micro buret, including the feed liquor pipe, buret and solid glass post, the fixation clamp is passed through on the upper portion of feed liquor pipe and buret and is connected, and the lower part of feed liquor pipe is through first piston switch and buret intercommunication, and the tail end of characterized by buret passes through second piston switch and transparent connecting pipe and can dismantle with the tip mouth of titrating and be connected, has the scale mark that begins top-down to arrange from 0 scale on the pipe wall of buret, the upper end and the buret intercommunication of overflow pipe, the lower edge of intercommunication mouth aligns with 0 scale of scale mark. The utility model discloses can autozero, not only effectively shorten whole titration time, improve work efficiency, can avoid the random error that artifical zero setting brought moreover, simultaneously, can also sparingly titrate liquid. The utility model adopts the detachable structure, brings convenience to the washing of the burette, and especially when the burette is needed to be soaked for washing, the convenience degree is more obvious. The utility model has simple structure, low cost, easy manufacture and convenient use.

Description

Micro burette capable of automatically adjusting zero

Technical Field

The utility model relates to a glassware for laboratory analysis, particularly but automatic zero setting's micro buret.

Background

The common micro burette is formed by communicating two slender glass pipe columns, wherein the two pipe columns are respectively a liquid inlet pipe and a burette, the liquid inlet pipe and the burette are both provided with piston switches, the liquid inlet pipe piston switch controls liquid inlet quantity, and the burette piston switch controls titration speed; the burette is provided with scales for indicating the titration amount, the scales from top to bottom are from small to large, and the outlet of the burette is in a sharp-nose shape.

The piston is provided with a piston switch, a micro burette is arranged in the piston switch, and the micro burette is provided with a small diameter outlet. In addition, the liquid storage amount of the liquid inlet pipe of the micro-burette is limited, liquid needs to be added frequently, and the liquid needs to be adjusted to zero after each time of liquid addition, so that the workload is large, and the human error is increased. Chinese patent application CN103033593A discloses a micro burette, wherein a thin tube is arranged between a liquid storage tube and the burette, and gas is introduced into the liquid storage tube to ensure the pressure difference between the liquid storage tube and the burette, so that the solution in the liquid storage tube smoothly flows into the burette; when the solution in the burette reaches the zero scale mark, the gas can not enter the liquid storage pipe, thereby automatically stopping the liquid injection. Although the patent application can also solve the problem of automatic zero setting, the structure is complex. Therefore, it is necessary to design a micro burette with simple structure, low cost, easy manufacture and convenient use and capable of automatically adjusting zero.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a micro burette which has simple structure, low cost, easy manufacture and convenient use and can automatically zero.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a but automatic zero setting's micro buret, including the feed liquor pipe, buret and solid glass post, the upper portion of feed liquor pipe and buret is passed through the fixation clamp and is connected, the lower part of feed liquor pipe is through first piston switch and buret intercommunication, the tail end of characterized by buret is through second piston switch and transparent connecting pipe and can dismantle with the tip mouth and be connected, there is the scale mark that begins top-down to arrange from 0 scale on the pipe wall of buret, the upper end and the buret intercommunication of overflow pipe, the lower edge of intercommunication mouth aligns with 0 scale mark of scale mark.

Further, the lower end of the overflow pipe leads to a beaker via an intermediate hose.

Further, the transparent connecting pipe is a PVC pipe, and the inner diameter of the transparent connecting pipe is matched with the outer diameter of the burette.

Further, the graduation mark is a red graduation mark.

Adopt the utility model discloses, can be at automatic zero setting behind the liquid feeding at every turn, not only effectively shortened whole titration time, improved work efficiency, can avoid the random error that artifical zero setting brought moreover, simultaneously, can also save titration liquid.

The utility model adopts the detachable structure, brings convenience to the washing of the burette, and especially when the burette is needed to be soaked for washing, the convenience degree is more obvious.

The utility model has simple structure, low cost, easy manufacture and convenient use.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1-a liquid inlet pipe; 2-burette; 3-solid glass column; 4-fixing clips; 5-a first piston switch; 6-a second piston switch; 7-transparent connecting pipe; 8-titration tip; 9-graduation mark; 10-an overflow pipe; 11-an intermediate hose; 12-beaker.

Detailed Description

The present invention will be further described with reference to the following drawings and examples, but the examples should not be construed as limiting the present invention.

As shown in the figure, the micro burette capable of automatically zeroing comprises a liquid inlet pipe 1, a burette 2 and a solid glass column 3, wherein the upper parts of the liquid inlet pipe 1 and the burette 2 are connected through a fixing clamp 4, the lower part of the liquid inlet pipe 1 is communicated with the burette 2 through a first piston switch 5, the tail end of the burette 2 is detachably connected with a titration sharp mouth 8 through a second piston switch 6 and a transparent connecting pipe 7, a scale mark 9 which is arranged from 0 scale to top down is arranged on the pipe wall of the burette 2, the upper end of an overflow pipe 10 is communicated with the burette 2, and the lower edge of the communication port is aligned with 0 scale mark 9.

The preferred embodiments are: in the above solution, the lower end of the overflow tube 10 leads to a beaker 12 via an intermediate hose 11.

The preferred embodiments are: in the above scheme, the transparent connecting pipe 7 is a PVC pipe, and the inner diameter of the transparent connecting pipe 7 is adapted to the outer diameter of the burette 2.

The preferred embodiments are: in the above scheme, the scale lines 9 are red scale lines.

Those not described in detail in this specification are prior art to the knowledge of those skilled in the art.

Claims

1. The utility model provides a but automatic zero setting's micro buret, includes feed liquor pipe (1), buret (2) and solid glass post (3), and the upper portion of feed liquor pipe (1) and buret (2) is passed through fixation clamp (4) and is connected, and the lower part of feed liquor pipe (1) is through first piston switch (5) and buret (2) intercommunication, its characterized in that: the tail end of the burette (2) is detachably connected with the burette tip (8) through a second piston switch (6) and a transparent connecting pipe (7), scale marks (9) which are arranged from 0 scale to top are arranged on the pipe wall of the burette (2), the upper end of the overflow pipe (10) is communicated with the burette (2), and the lower edge of the communicating port is aligned with 0 scale marks (9).

2. An autozeroable microtiter tube according to claim 1, wherein: the lower end of the overflow pipe (10) leads to a beaker (12) through an intermediate hose (11).

3. An autozeroable micro burette according to claim 1 or 2, wherein: the transparent connecting pipe (7) is a PVC pipe, and the inner diameter of the transparent connecting pipe (7) is matched with the outer diameter of the burette (2).

4. An autozeroable micro burette according to claim 1 or 2, wherein: the scale mark (9) is a red scale mark.

5. An autozeroable microtiter tube according to claim 3 wherein: the scale mark (9) is a red scale mark.