CN213843153U - Novel acid-base dual-purpose burette - Google Patents
Novel acid-base dual-purpose burette Download PDFInfo
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- CN213843153U CN213843153U CN202022329680.5U CN202022329680U CN213843153U CN 213843153 U CN213843153 U CN 213843153U CN 202022329680 U CN202022329680 U CN 202022329680U CN 213843153 U CN213843153 U CN 213843153U
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Abstract
The utility model discloses a novel acid-base dual-purpose burette, which comprises a control valve, wherein the control valve comprises a valve body, a valve core arranged in the valve body and two connecting pipes respectively arranged at the upper end and the lower end of the valve body; a plurality of clamping jaws which are arranged in a central symmetry manner are arranged at the pipe orifice of each connecting pipe, and each connecting pipe is provided with a connecting nut which is matched with the connecting pipe in a threaded manner and is used for locking and fixing the pipe body and the drip nozzle; the lower end of the pipe body is detachably inserted into a connecting pipe at the upper end of the valve body; the upper end of the drip nozzle is detachably inserted on the connecting pipe at the lower end of the valve body. The design makes it can be acid-base dual-purpose like this, and convenient washing of glass part and processing are also more accurate to the control of dropping liquid simultaneously.
Description
Technical Field
The utility model relates to a burette field, in particular to novel dual-purpose burette of acid-base.
Background
Volumetric analysis is an important component of chemical analysis and has wide application in the fields of chemistry, pharmacy, environment and the like, and a burette is the most important device in volumetric analysis.
In the prior art, the burette is divided into acid type and alkali type, and acid liquor and alkali liquor can not be used commonly; in addition, the glass part of the acid burette has a complex structure, which is not beneficial to production, processing and cleaning; also, the accuracy of droplet control is general, and it is difficult to control the droplet size, especially near the end of the titration.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a burette which has the functions of acid and alkali and is convenient to clean and replace.
The purpose of the utility model is realized like this: a novel acid-base dual-purpose burette comprises a control valve, a valve core and two connecting pipes, wherein the control valve comprises a valve body, the valve core is arranged in the valve body, and the two connecting pipes are respectively arranged at the upper end and the lower end of the valve body; a plurality of clamping jaws which are arranged in a central symmetry manner are arranged at the pipe orifice of each connecting pipe, and each connecting pipe is provided with a connecting nut which is matched with the connecting pipe in a threaded manner and is used for locking and fixing the pipe body and the drip nozzle; the lower end of the pipe body is detachably inserted into a connecting pipe at the upper end of the valve body; the upper end of the drip nozzle is detachably inserted on the connecting pipe at the lower end of the valve body.
Compared with the prior art, the beneficial effects of the utility model reside in that: the design divides the burette into a pipe body, a control valve and a drip nozzle, so that the pipe body and the drip nozzle are simpler in structure and are beneficial to processing and cleaning; in addition, the connecting pipe, the clamping jaw and the connecting nut are adopted for connection and fixation, so that the disassembly and the assembly are convenient, and the connection is reliable; the relevant parts of the control valve are made of acid-base resistant materials, so that the control valve can be used for both acid and base.
As a preferred scheme of the utility model, the valve core comprises a piston which is arranged in the valve body and is in sliding sealing fit with the valve body, and a stud which is in threaded fit with the valve body; a plurality of mutually parallel liquid dropping channels with different radiuses are arranged inside the piston, and a detachable end socket nut is arranged at the extending end of the piston; the inner side end of the stud is rotatably connected with the inner side end of the piston, and the outer side end of the stud is provided with a handle. The design can utilize the dropping liquid passageway of different radiuses to come the dropping liquid like this for the dropping liquid size becomes adjustable, thereby realizes the accurate control to the dropping liquid.
Furthermore, a T-shaped connecting column is arranged at the inner side end of the piston; the inner side end of the stud is provided with a connecting seat with an opening at one end; the T-shaped connecting column is detachably arranged in the connecting seat and is rotatably connected with the connecting seat. The design structure is simple, the dismounting is convenient, and the operation is reliable.
Furthermore, the extending end of the piston is provided with position scale marks for assisting in judging the position of the liquid dropping pipeline. This design allows more precise control of the piston.
Furthermore, two ends of the piston are respectively provided with a sealing ring which is in sliding sealing fit with the valve body. The design has further improved the leakproofness of control valve like this, has avoided the valve body to reveal.
Furthermore, the upper end of the pipe body is provided with a horn-shaped liquid inlet, and the pipe body of the pipe body is provided with scale marks.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the control valve of the present invention.
The automatic control valve comprises a control valve 1, a valve body 2, a connecting pipe 3, a clamping jaw 3a, a connecting nut 3b, a valve core 4, a piston 5, a liquid dropping channel 5a, a sealing head nut 5b, a sealing ring 5c, a connecting column 5d T, position scale marks 5e, a stud 6, a handle 6a, a connecting seat 6b, a pipe body 7, a liquid inlet 7a and a liquid dropping nozzle 8.
Detailed Description
As shown in fig. 1-2, a novel acid-base dual-purpose burette comprises a control valve 1, wherein the control valve 1 comprises a valve body 2, a valve core 4 arranged inside the valve body 2, and two connecting pipes 3 respectively arranged at the upper end and the lower end of the valve body 2; a plurality of clamping jaws 3a which are arranged in a central symmetry manner are arranged at the pipe orifice of each connecting pipe 3, and a connecting nut 3b which is in threaded fit with each connecting pipe 3 is arranged on each connecting pipe 3; a pipe body 7, wherein the lower end of the pipe body 7 is detachably inserted on the connecting pipe 3 at the upper end of the valve body 2; a drip nozzle 8, wherein the upper end of the drip nozzle 8 is detachably inserted on the connecting pipe 3 at the lower end of the valve body 2. The relevant parts of the control valve 1 are made of acid and alkali resistant material, such as polytetrafluoroethylene.
The valve core 4 comprises a piston 5 which is arranged in the valve body 2 and is in sliding sealing fit with the valve body 2, and a stud 6 which is in threaded fit with the valve body 2; a plurality of mutually parallel liquid dropping channels 5a with different radiuses are arranged inside the piston 5, and a detachable end socket nut 5b is arranged at the extending end of the piston 5; the inner end of the stud 6 is rotatably connected to the inner end of the piston 5, and the outer end of the stud 6 is provided with a handle 6 a.
A T-shaped connecting column 5d is arranged at the inner side end of the piston 5; a connecting seat 6b with an opening at one end is arranged at the inner side end of the stud 6; the T-shaped connecting post 5d is detachably mounted in the connecting seat 6b and rotatably connected thereto. When the T-shaped connecting column is installed, the T-shaped connecting column 5d is directly placed in from the side end opening of the connecting seat 6 b.
The extending end of the piston 5 is provided with a position scale mark 5e for assisting in judging the position of the dropping pipe 5 a.
Two ends of the piston 5 are respectively provided with a sealing ring 5c which is matched with the valve body 2 in a sliding sealing way.
The upper end of the pipe body 7 is provided with a trumpet-shaped liquid inlet 7a, and the pipe body of the pipe body 7 is provided with scale marks.
When the control valve 1 is adjusted and opened, the handle 6a is firstly rotated to drive the stud 6 to rotate and move towards the inner side, the piston 5 slowly moves towards the inner side along with the movement of the stud 6 until the corresponding liquid dropping channel 5a on the piston 5 is aligned with the connecting pipe 3 and communicated with the connecting pipe, and at the moment, the edge of the left end of the valve body 2 is aligned with the corresponding position scale mark 5 e.
When the control valve 1 is closed, the stud 6 is rotated in the reverse direction to move outward.
The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.
Claims (6)
1. A novel acid-base dual-purpose burette is characterized in that: the burette comprises
The control valve (1) comprises a valve body (2), a valve core (4) arranged in the valve body (2) and two connecting pipes (3) respectively arranged at the upper end and the lower end of the valve body (2); a plurality of clamping jaws (3 a) which are arranged in a central symmetry manner are arranged at the pipe orifice of each connecting pipe (3), and a connecting nut (3 b) which is in threaded fit with each connecting pipe (3) is arranged on each connecting pipe (3);
the lower end of the pipe body (7) is detachably inserted into the connecting pipe (3) at the upper end of the valve body (2);
the upper end of the drip nozzle (8) is detachably inserted into the connecting pipe (3) at the lower end of the valve body (2).
2. The novel acid-base dual-purpose burette of claim 1, wherein: the valve core (4) comprises a piston (5) which is arranged in the valve body (2) and is in sliding sealing fit with the valve body (2), and also comprises a stud (6) which is in threaded fit with the valve body (2);
a plurality of parallel liquid dropping channels (5 a) with different radiuses are arranged in the piston (5), and a detachable end socket nut (5 b) is arranged at the extending end of the piston (5);
the inner side end of the stud (6) is rotatably connected with the inner side end of the piston (5), and a handle (6 a) is arranged at the outer side end of the stud (6).
3. The novel acid-base dual-purpose burette of claim 2, wherein: a T-shaped connecting column (5 d) is arranged at the inner side end of the piston (5); a connecting seat (6 b) with an opening at one end is arranged at the inner side end of the stud (6); the T-shaped connecting column (5 d) is detachably arranged in the connecting seat (6 b) and is rotatably connected with the connecting seat.
4. A novel acid-base dual-purpose burette as claimed in any one of claims 2 to 3, wherein: the extending end of the piston (5) is provided with position scale marks (5 e) for assisting in judging the position of the liquid dropping pipeline (5 a).
5. A novel acid-base dual-purpose burette as claimed in any one of claims 2 to 3, wherein: and two ends of the piston (5) are respectively provided with a sealing ring (5 c) which is in sliding sealing fit with the valve body (2).
6. A novel acid-base dual-purpose burette as claimed in any one of claims 1 to 3, wherein: the upper end of body (7) is equipped with tubaeform inlet (7 a), be equipped with the scale mark on the body of body (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022329680.5U CN213843153U (en) | 2020-10-19 | 2020-10-19 | Novel acid-base dual-purpose burette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022329680.5U CN213843153U (en) | 2020-10-19 | 2020-10-19 | Novel acid-base dual-purpose burette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213843153U true CN213843153U (en) | 2021-07-30 |
Family
ID=77010038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022329680.5U Active CN213843153U (en) | 2020-10-19 | 2020-10-19 | Novel acid-base dual-purpose burette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213843153U (en) |
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2020
- 2020-10-19 CN CN202022329680.5U patent/CN213843153U/en active Active
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