CN213456808U

CN213456808U - Titration apparatus for chemical pH value measurement

Info

Publication number: CN213456808U
Application number: CN202022079531.8U
Authority: CN
Inventors: 田雁飞; 刘燕玲; 郭永艳; 王明; 党铭铭; 谢婷; 伍惠玲; 曹莉
Original assignee: Hunan Nonferrous Metals Vocational and Technical College
Current assignee: Hunan Nonferrous Metals Vocational and Technical College
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-06-15
Anticipated expiration: 2030-09-21

Abstract

The utility model relates to the technical field of titration devices, in particular to a titration device for measuring chemical pH value, which comprises a storage barrel and a titration valve tube, wherein the top opening of the storage barrel is provided with a rubber stopper, the outer wall of the storage barrel is provided with a first scale identification strip, the bottom surface of the storage barrel is provided with a connecting seat, the bottom surface of the connecting seat is connected with the surface of a buffer ball, the surface of the connecting seat is provided with a ring, the surface of the connecting seat is provided with a silica gel pad, the bottom surface of the storage barrel is spliced with a delivery valve tube, and the top end of the titration valve tube penetrates through the; the beneficial effects are that: the utility model provides a chemical pH value measuring titration outfit adds in storage bobbin base portion and establishes the buffer memory ball, goes out bobbin base portion and adds and establishes the delivery valve pipe and pour into the required liquid of titrating into to buffer memory ball inside into, when the delivery liquid volume exceedes the demand, extracts the inside unnecessary liquid of buffer memory ball with the help of the suction tube through pressing the negative pressure gasbag, ensures that buffer memory ball inside titrates the liquid volume accurate.

Description

Titration apparatus for chemical pH value measurement

Technical Field

The utility model relates to a titration outfit technical field specifically is a chemistry pH valve measuring titration outfit.

Background

In the field of solar cell manufacturing, acid-base neutralization titration is often adopted to realize the detection of the pH value of the etching liquid medicine for texturing. Acid-base neutralization titration is a method for measuring the alkali (or acid) with the known mass concentration by using the acid (or alkali) with the known mass concentration, and whether complete neutralization is achieved is judged by using methyl orange, methyl red, phenolphthalein and the like as acid-base indicators in the titration process.

The burette adopted by the existing acid-base neutralization titration is generally provided with scales on the outer wall, an operator is required to read the scale value of the position of the liquid level of the burette in the actual operation process, and the related operations are basically and completely completed manually based on the structure of the existing acid-base titration device in the actual operation process of acid-base titration, so that the controllability of the titrated liquid amount is poor, and the dripping amount is often inaccurate due to the fact that the liquid is directly dripped once; therefore, the utility model provides a chemical pH value measuring titration outfit is used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a chemistry pH valve measuring 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: the utility model provides a titration outfit for chemical pH value measurement, includes storage section of thick bamboo and buret valve pipe, the open-top of storage section of thick bamboo is provided with the rubber stopper, and the outer wall of storage section of thick bamboo is provided with first scale identification strip, and the bottom surface of storage section of thick bamboo is provided with the connecting seat, the surface at the buffer memory ball is connected to the connecting seat bottom surface, and the surface of connecting seat is provided with the ring, and the surface of connecting seat is provided with the silica gel pad, and the bottom surface of storage section of thick bamboo is pegged graft and is had the delivery valve pipe, the bottom surface of buffer memory ball is run through on the top of buret valve pipe, and the outer wall of buffer memory ball is provided with second scale identification strip, and the outer wall of storage section of thick bamboo adds establishes the tractive rubber piece.

Preferably, the storage cylinder is of a cylindrical structure, the rubber plug is of a circular plate-shaped structure, the two connecting seats are symmetrically distributed on the center of the bottom surface of the storage cylinder, and the buffer ball is of a ball-shaped structure with a hollow inner part.

Preferably, the ring is "Contraband" font structure, and ring and connecting seat one-to-one, silica gel pad are square plate structure, and the surface of silica gel pad has been seted up and has been pointed the groove, and it is circular arc structure to point the groove.

Preferably, the negative pressure air bag is of an oval ball structure with a hollow inner part, the drawing rubber sheets are of a square plate structure, the number of the drawing rubber sheets is two, and the two drawing rubber sheets are symmetrically distributed about the height center of the negative pressure air bag.

Preferably, the suction pipe comprises two vertical sections and two horizontal sections, the two vertical sections are located between the two vertical sections, one vertical section penetrates through the bottom plate of the storage cylinder and the top plate of the buffer ball, the horizontal section penetrates through the side plate of the storage cylinder, and the sealing colloid is smeared at the penetrating positions of the storage cylinder and the buffer ball by the suction pipe.

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

1. the utility model provides a titration apparatus for chemical pH value measurement adds at storage cylinder bottom and establishes the buffer memory ball, goes out the feed valve pipe and adds to establish in feed cylinder bottom and pours into the liquid that needs to be titrated into to buffer memory ball inside, when the volume of liquid of carrying surpasss the demand, draws the unnecessary liquid in buffer memory ball with the help of the suction tube through pressing down the negative pressure gasbag, ensures that buffer memory ball inside volume of titrating liquid is accurate;

2. the utility model provides a titration outfit that chemical pH valve was measured links together storage section of thick bamboo and buffer memory ball through the connecting seat to the connecting seat surface adds establishes the ring, so two indicate to insert respectively can hold titration outfit behind two rings, and avoid the finger directly to press storage section of thick bamboo or buffer memory ball and lead to the equipment to break.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged schematic view of a structure in fig. 1.

In the figure: storage section of thick bamboo 1, rubber stopper 2, first scale identification strip 3, connecting seat 4, buffer memory ball 5, ring 6, silica gel pad 7, delivery valve pipe 8, titration valve pipe 9, second scale identification strip 10, negative pressure gasbag 11, tractive sheet rubber 12, suction tube 13.

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.

Referring to fig. 1 to 2, the present invention provides a technical solution: a titration apparatus for measuring chemical pH value comprises a storage barrel 1 and a titration valve tube 9, wherein a rubber plug 2 is arranged at the top opening of the storage barrel 1, a first scale identification strip 3 is arranged on the outer wall of the storage barrel 1, a connecting seat 4 is arranged on the bottom surface of the storage barrel 1, the bottom surface of the connecting seat 4 is connected to the surface of a buffer ball 5, the storage barrel 1 is of a cylindrical structure, the rubber plug 2 is of a circular plate-shaped structure, the connecting seat 4 is provided with two connection seats 4, the two connection seats 4 are symmetrically distributed about the center of the bottom surface of the storage barrel 1, the buffer ball 5 is of a hollow ball-shaped structure, a conveying valve tube 8 is inserted into the bottom surface of the storage barrel 1, the top end of the titration valve tube 9 penetrates through the bottom surface of the buffer ball 5, a second scale identification strip 10 is arranged on the outer wall of the buffer ball 5, a test liquid is sucked, when the test liquid is used, a valve on the surface of the delivery valve pipe 8 is opened, when the delivery valve pipe 8 injects the test liquid into the buffer ball 5, the surface scale of the first scale identification strip 3 is observed, namely the liquid level is lowered, after the quantitative test liquid is delivered, the valve on the surface of the delivery valve pipe 8 is closed, and the relation between the second scale identification strip 10 on the surface of the buffer ball 5 and the liquid level is observed;

the surface of the connecting seat 4 is provided with the finger ring 6, the surface of the connecting seat 4 is provided with the silica gel pad 7, the finger ring 6 is in a Contraband-shaped structure, the finger rings 6 correspond to the connecting seat 4 one by one, the silica gel pad 7 is in a square plate-shaped structure, the surface of the silica gel pad 7 is provided with a finger groove, the finger groove is in an arc-shaped structure, a finger is inserted into the finger ring 6 and presses the surface of the silica gel pad 7, and thus the holding power is applied to the surface of the connecting seat 4, and the material storage barrel 1 and the buffer ball 5 are prevented from being broken;

the outer wall of the storage barrel 1 is additionally provided with two traction rubber sheets 12, the traction rubber sheets 12 are connected to the surface of the negative pressure air bag 11, the negative pressure air bag 11 is of an elliptical ball structure with a hollow inner part, the traction rubber sheets 12 are of a square plate structure, the two traction rubber sheets 12 are symmetrically distributed around the height center of the negative pressure air bag 11, a suction pipe 13 is inserted into the bottom of the negative pressure air bag 11, the suction pipe 13 penetrates through the storage barrel 1 and the top plate of the buffer ball 5, the suction pipe 13 comprises a vertical section and a horizontal section, the vertical section is provided with two, the horizontal section is positioned between the two vertical sections, one vertical section simultaneously penetrates through the bottom plate of the storage barrel 1 and the top plate of the buffer ball 5, the horizontal section penetrates through the side plate of the storage barrel 1, the suction pipe 13 is coated with sealing colloid at the penetrating part of the storage barrel 1 and the buffer ball 5, if the liquid amount inside the buffer ball, at this moment, the suction tube 13 sucks the liquid in the buffer ball 5, the negative pressure air bag 11 is repeatedly pressed for a plurality of times to suck quantitative test liquid, so that the amount of the residual test liquid in the buffer ball 5 meets the requirement, and the valve on the surface of the titration valve tube 9 is opened to drip the test liquid in the buffer ball 5 downwards.

The working principle is as follows: when the test liquid is used, a valve on the surface of the delivery valve pipe 8 is opened, when the delivery valve pipe 8 injects the test liquid into the buffer ball 5, attention is paid to observing the scale on the surface of the first scale identification strip 3, namely the liquid level is reduced, after the quantitative test liquid is delivered, the valve on the surface of the delivery valve pipe 8 is closed, the relation between the second scale identification strip 10 on the surface of the buffer ball 5 and the liquid level is observed, if the liquid amount in the buffer ball 5 exceeds the required amount, the negative pressure air bag 11 is pressed and released, at the moment, the suction pipe 13 sucks the liquid in the buffer ball 5, the negative pressure air bag 11 is repeatedly pressed for many times to suck the quantitative test liquid, so that the residual test liquid amount in the buffer ball 5 meets the requirement, and the valve on the surface of the titration valve pipe 9 can be opened to drip the test liquid in the buffer ball 5 downwards, during the operation, the finger inserts and presses on the surface of silica gel pad 7 in the ring 6, so hold the grip and exert on the surface of connecting seat 4, avoid storage section of thick bamboo 1 and buffer ball 5 to be pressed and break.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a titration outfit for chemical acidity and alkalinity is measured, includes storage cylinder (1) and titration valve pipe (9), its characterized in that: the top opening of the storage barrel (1) is provided with a rubber plug (2), the outer wall of the storage barrel (1) is provided with a first scale identification strip (3), the bottom surface of the storage barrel (1) is provided with a connecting seat (4), the bottom surface of the connecting seat (4) is connected to the surface of a buffer ball (5), the surface of the connecting seat (4) is provided with a ring (6), the surface of the connecting seat (4) is provided with a silica gel pad (7), the bottom surface of the storage barrel (1) is spliced with a conveying valve pipe (8), the top end of a titration valve pipe (9) penetrates through the bottom surface of the buffer ball (5), the outer wall of the buffer ball (5) is provided with a second scale identification strip (10), the outer wall of the storage barrel (1) is additionally provided with a traction rubber sheet (12), the traction rubber sheet (12) is connected to the surface of a negative pressure air bag (11), the bottom of the, the suction pipe (13) penetrates through the material storage barrel (1) and the top plate of the buffer ball (5).

2. The titration device for chemical pH value measurement according to claim 1, wherein: storage section of thick bamboo (1) is the cylinder structure, and rubber stopper (2) are circular platelike structure, and connecting seat (4) are provided with two, and two connecting seats (4) are about the bottom surface central symmetry distribution of storage section of thick bamboo (1), and buffer memory ball (5) are inside hollow ball-type structure.

3. The titration device for chemical pH value measurement according to claim 1, wherein: the ring (6) is 'Contraband' font structure, ring (6) and connecting seat (4) one-to-one, and silica gel pad (7) are square plate structure, and the surface of silica gel pad (7) has been seted up indicates the groove, indicates the groove to be convex structure.

4. The titration device for chemical pH value measurement according to claim 1, wherein: the negative pressure air bag (11) is of an oval ball structure with a hollow inner part, the drawing rubber sheets (12) are of a square plate structure, the number of the drawing rubber sheets (12) is two, and the two drawing rubber sheets (12) are symmetrically distributed about the height center of the negative pressure air bag (11).

5. The titration device for chemical pH value measurement according to claim 1, wherein: the suction pipe (13) comprises two vertical sections and two horizontal sections, the two vertical sections are located between the two vertical sections, one vertical section penetrates through the bottom plate of the storage barrel (1) and the top plate of the buffer ball (5), the horizontal section penetrates through the side plate of the storage barrel (1), and sealing colloid is smeared on the penetrating positions of the storage barrel (1) and the buffer ball (5) through the suction pipe (13).