CN209841816U - Titration apparatus - Google Patents

Abstract

The utility model relates to the technical field of machinery, specifically a titration outfit, including the glass pipe, glass intraductal wall surface is equipped with the glass doctor-bar, and the glass intraductal below is equipped with the tip burette. The utility model discloses a to tip burette and the split type design of glass pipe, when making the tip burette damage or carry out the condition handled to different liquid, the burette head is convenient for change. The utility model discloses a glass doctor-bar of setting and glass tube inner wall laminating when having the bubble on the glass tube wall, realizes cleaing away of bubble.

Description

Titration apparatus

Technical Field

The utility model relates to the technical field of machinery, specifically a titration outfit.

Background

A burette refers to a meter that holds a titrant solution during a titration operation. The burette is a slender glass tube with scales and uniform inner diameter, and the lower end of the burette is provided with a glass sharp mouth with different volumes of 25ml, 50ml and the like. The main part of the burette is made of a glass tube with uniform inner diameter and accurate scale, the lower end of the burette is connected with a glass cock or a latex tube containing glass beads for controlling the liquid outflow speed, and the bottom end of the burette is connected with a sharp-nose glass tube. A burette with a glass stopcock at the lower end is known as an acid burette and is commonly used to measure the volume of a dilute solution of non-strong alkalinity that is dripped. In the prior art, a glass sharp nozzle at the bottom of the burette is easy to corrode and damage and cannot be replaced. In addition, when the burette is used for pouring liquid, part of the liquid can generate bubbles on the inner wall of the glass, and the bubbles are difficult to remove. In view of this, we propose a titration apparatus.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a titration outfit to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a titration apparatus comprises a glass tube, wherein a glass scraping blade is arranged on the inner wall surface of the glass tube, and a tip dropper is arranged below the glass tube;

the outer wall of the glass tube is printed with a plurality of scale marks;

the top end of the glass scraping blade is provided with a hook which is movably hung on the outer wall of the top end of the glass tube;

the inner wall of the bottom end of the glass tube is provided with an internal thread, the outer wall of the top end of the tip dropper is provided with an external thread, and the internal thread is in threaded fit with the external thread;

the outer walls of two sides of the bottom end of the tip dropper are provided with fixing holes, a cock is arranged in the fixing holes, the cock penetrates through the fixing holes and is rotatably connected with the fixing holes, a rotating rod is embedded in one end of the cock, and an air hole is formed in the center of the cock.

Preferably, the graduation marks are arranged at equal intervals along the vertical direction.

Preferably, the outer wall of the glass scraping blade is tightly attached to the inner wall of the glass tube.

Preferably, the sum of the length of the glass wiper and the length of the external thread is equal to the length of the glass tube.

Preferably, the bottom end of the tip dropper is conical.

Preferably, the outer wall of the cock is tightly attached to the fixing hole.

Preferably, the radius of the air hole is smaller than the radius of the cock.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a to tip burette and the split type design of glass pipe, when making the tip burette damage or carry out the condition handled to different liquid, the burette head is convenient for change.

2. The utility model discloses a glass doctor-bar of setting and glass tube inner wall laminating when having the bubble on the glass tube wall, realizes cleaing away of bubble.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged schematic view of the structure of the part A of the present invention;

FIG. 3 is an exploded view of the overall structure of the present invention;

FIG. 4 is an enlarged schematic view of the structure of the B position of the present invention;

fig. 5 is a sectional view of the overall structure of the present invention.

Fig. 6 is an enlarged schematic view of the structure of the C portion of the present invention.

In the figure: 1. the glass tube, 11 degrees of scale marks, 12 degrees of internal threads, 2 degrees of tip droppers, 21 degrees of faucets, 22 degrees of fixing holes, 23 degrees of external threads, 211 degrees of rotating rods, 212 degrees of air holes, 3 degrees of glass scrapers and 31 degrees of hooks.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-6, the present invention provides a technical solution:

a titration apparatus comprises a glass tube 1, a glass scraping blade 3 is arranged on the surface of the inner wall of the glass tube 1, and a tip dropper 2 is arranged below the glass tube 1;

the outer wall of the glass tube 1 is printed with a plurality of scale marks 11; in addition, the scale lines 11 are arranged at equal intervals in the vertical direction, so that the scale capacity in the glass tube is easy to read.

The top end of the glass scraping blade 3 is provided with a hook 31, and the hook 31 is movably hung on the outer wall of the top end of the glass tube 1; in addition, the outer wall of the glass scraping blade 3 is tightly attached to the inner wall of the glass tube 1, so that the glass scraping blade 3 can remove air bubbles on the inner wall of the glass tube 1. Further, the sum of the length of the glass wiper 3 and the length of the external thread 23 is equal to the length of the glass tube 1, thereby increasing the wiping area of the glass wiper 3 as much as possible.

The inner wall of the bottom end of the glass tube 1 is provided with an internal thread 12, the outer wall of the top end of the tip dropper 2 is provided with an external thread 23, and the internal thread 12 is in threaded fit with the external thread 23; the arrangement realizes the connection between the glass tube 1 and the tip dropper 2, and makes the replacement and the disassembly easy. In addition, the bottom end of the tip dropper 2 is conical, so that the titration function of the tip dropper 2 is realized.

The outer walls of two sides of the bottom end of the tip dropper 2 are provided with fixing holes 22, a cock 21 is arranged in the fixing holes 22, the cock 21 penetrates through the fixing holes 22 and is rotatably connected with the fixing holes 22, one end of the cock 21 is embedded with a rotating rod 211, and the center of the cock 21 is provided with an air hole 212. The above arrangement enables titration control of the liquid in the tube by means of the tap 21. Furthermore, the radius of the air hole 212 is smaller than that of the cock 21; in addition, the outer wall of the cock 21 is tightly attached to the fixing hole 22, the sealing performance of the cock is realized through the arrangement, and liquid is prevented from leaking.

When the titration apparatus of the embodiment is used, firstly, a liquid reagent is added into the glass tube 1, and when bubbles appear on the inner wall of the glass tube 1, the glass scraper 3 is used for rotating on the inner wall of the glass tube 1, so that the glass scraper 3 scrapes the bubbles; then, the rotating rod 211 is rotated to drive the cock 21 to rotate, so that the position of the air hole 212 is changed, the liquid reagent drops along the conical tip dropper 2 through the air hole 212, and the rotating rod 211 is rotated to control the titration process of the liquid reagent. After use, the tip dropper 2 can be unscrewed and taken off for cleaning. When the tip dropper 2 is damaged or different reagents are treated, the tip dropper 2 can be replaced easily.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. A titration apparatus, comprising a glass tube (1), characterized in that: a glass scraping blade (3) is arranged on the surface of the inner wall of the glass tube (1), and a tip dropper (2) is arranged below the glass tube (1);

a plurality of scale marks (11) are printed on the outer wall of the glass tube (1);

a hook (31) is arranged at the top end of the glass scraping blade (3), and the hook (31) is movably hung on the outer wall of the top end of the glass tube (1);

an internal thread (12) is arranged on the inner wall of the bottom end of the glass tube (1), an external thread (23) is arranged on the outer wall of the top end of the tip dropper (2), and the internal thread (12) is in threaded fit with the external thread (23);

the outer walls of two sides of the bottom end of the tip dropper (2) are provided with fixing holes (22), a cock (21) is arranged in each fixing hole (22), the cock (21) penetrates through the fixing holes (22) and is rotatably connected with the fixing holes, one end of the cock (21) is embedded with a rotating rod (211), and an air hole (212) is formed in the center of the cock (21).

2. The titration device according to claim 1, wherein: the scale marks (11) are arranged at equal intervals along the vertical direction.

3. The titration device according to claim 1, wherein: the outer wall of the glass scraping blade (3) is tightly attached to the inner wall of the glass tube (1).

4. The titration device according to claim 1, wherein: the sum of the length of the glass scraping blade (3) and the length of the external thread (23) is equal to the length of the glass tube (1).

5. The titration device according to claim 1, wherein: the bottom end of the tip dropper (2) is conical.

6. The titration device according to claim 1, wherein: the outer wall of the cock (21) is tightly attached to the fixing hole (22).

7. The titration device according to claim 1, wherein: the radius of the air hole (212) is smaller than the radius of the cock (21).