CN2264913Y - Negative-pressure feeding automatic zero-setting burette - Google Patents
Negative-pressure feeding automatic zero-setting burette Download PDFInfo
- Publication number
- CN2264913Y CN2264913Y CN 95234480 CN95234480U CN2264913Y CN 2264913 Y CN2264913 Y CN 2264913Y CN 95234480 CN95234480 CN 95234480 CN 95234480 U CN95234480 U CN 95234480U CN 2264913 Y CN2264913 Y CN 2264913Y
- Authority
- CN
- China
- Prior art keywords
- burette
- negative
- automatic zero
- setting
- negative pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model relates to a negative-pressure feeding automatic zero-setting burette. The utility model is characterized in that the upper part of a common acid type or alkali type burette is additionally provided with a buffer foam and a side pipe. When the upper port of the burette is applied with negative pressure through a sucking ball, standard liquid in a container can pass through the side pipe along a pipeline and enter the burette, and when liquid level just exceeds a zone scale line, the state of the negative pressure is relieved, the liquid level automatically returns to the zone scale line so that liquid feeding and zero setting operation are continuously and automatically accomplished for an instant. The negative-pressure feeding automatic zero-setting burette has simple structure, convenient operation, no accidental error and system error, large amounts of standard liquid saving and high work efficiency.
Description
The utility model relates to a kind of improved negative pressure liquid feeding automatic zero burette, is a kind of volumetry volumetric apparatus.
Existing volumetric apparatus has or not scale buret, general titrator, quantitative liquid sampling titrator, digital display titrator, common acid and base buret etc.Above volumetric apparatus exists complex structure, cost height respectively, need pour into liquid feeding, can not automatic zero set (AZS), weak points such as the tired lock of operation, waste titer, inefficiency.
The purpose of this utility model provides a kind of improved negative pressure liquid feeding automatic zero burette, to overcome above-mentioned deficiency.
The utility model is achieved through the following technical solutions: be provided with a buffering bubble 5 on the top of common acid or base buret body 1, on the sidewall of buffering bubble 5 lower end bodys, be provided with side pipe 6 in the level place mutually with the zero graduation line of scale 4, when when body 1 utilization suction ball 9 suitable for reading imposes negative pressure, then the titer in the container 7 enters in the body 1 by side pipe 6 along pipeline 8, when liquid level surpasses the zero graduation line of scale 4, unclamp and inhale ball 9 releasing negative pressure state, liquid level just falls after rise automatically to the zero graduation line, thereby finishes negative pressure liquid feeding automatic zero set (AZS) process.
Below in conjunction with accompanying drawing an embodiment of the present utility model is described in detail.
Accompanying drawing is a structural representation of the present utility model.
As shown in drawings, the utility model has one rotatable two logical piston 2 and communicates with water dropper 3 in the bottom of body 1, be provided with scale 4 in body 1 stage casing, the buffering of liquid overflow bubble 5 when body 1 top has one to be used for preventing liquid feeding, on the sidewall of buffering bubble 5 lower end bodys 1, the zero graduation line of bore minimum point and scale 4 side pipe 6 of level mutually in being provided with, and body 1 is communicated with container 7 by pipeline 8.Side pipe 6 angles downward and body 1 are 30 °-70 °.
Principle of work of the present utility model is as follows:
When the needs liquid feeding, at first will inhaling ball, to insert body suitable for reading and impose negative pressure, titer in the container is under the pressure of atmosphere at this moment, enter in the body by side pipe along pipeline, when liquid level surpasses the zero graduation line, unclamp and inhale ball releasing negative pressure, liquid level is just got back to the zero graduation line automatically, and unnecessary titer then returns container.
Compared with the prior art, the utlity model has following advantage:
1, manufacturing simple in structure, easy to operate, easy, with low cost.
2, liquid feeding and zeroing moment finish continuously automatically, having improved the work effect Rate can be saved a large amount of titers.
3, can eliminate accidental error, can avoid systematic error again.
Claims (3)
1, a kind of negative pressure liquid feeding automatic zero burette, comprise body (1), scale (4), two logical piston (2) and water droppers (3), it is characterized in that: suitable for reading being provided with at body (1) inhaled ball (9), body (1) top is provided with buffering bubble (5), on the sidewall of buffering bubble (5) lower end body (1),, and communicate with container (7) by pipeline (8) with the zero graduation line of scale (4) side pipe (6) that is interlinked to the outside in being provided with of level place mutually.
2, negative pressure liquid feeding automatic zero burette according to claim 1 is characterized in that side pipe (6) angle downward and body (1) is 30 °-70 °.
3, negative pressure liquid feeding automatic zero burette according to claim 1, the zero graduation line that it is characterized in that bore minimum point and scale (4) in side pipe (6) and body (1) connection is level mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95234480 CN2264913Y (en) | 1995-08-23 | 1995-08-23 | Negative-pressure feeding automatic zero-setting burette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95234480 CN2264913Y (en) | 1995-08-23 | 1995-08-23 | Negative-pressure feeding automatic zero-setting burette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2264913Y true CN2264913Y (en) | 1997-10-15 |
Family
ID=33878401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95234480 Expired - Fee Related CN2264913Y (en) | 1995-08-23 | 1995-08-23 | Negative-pressure feeding automatic zero-setting burette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2264913Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102302958A (en) * | 2011-07-19 | 2012-01-04 | 中国科学院东北地理与农业生态研究所 | Titration apparatus capable of accurately setting zero |
| CN102520118A (en) * | 2011-11-23 | 2012-06-27 | 宁波市牛奶集团有限公司 | Titration system |
| CN104698122A (en) * | 2015-03-18 | 2015-06-10 | 中国热带农业科学院热带作物品种资源研究所 | Foot-powered automatic sample-injection and zero setting titrating system and method |
| CN111257526A (en) * | 2020-03-12 | 2020-06-09 | 巴彦淖尔市医院 | Analytical instrument and method for bladder cancer treatment target preparation |
-
1995
- 1995-08-23 CN CN 95234480 patent/CN2264913Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102302958A (en) * | 2011-07-19 | 2012-01-04 | 中国科学院东北地理与农业生态研究所 | Titration apparatus capable of accurately setting zero |
| CN102520118A (en) * | 2011-11-23 | 2012-06-27 | 宁波市牛奶集团有限公司 | Titration system |
| CN104698122A (en) * | 2015-03-18 | 2015-06-10 | 中国热带农业科学院热带作物品种资源研究所 | Foot-powered automatic sample-injection and zero setting titrating system and method |
| CN111257526A (en) * | 2020-03-12 | 2020-06-09 | 巴彦淖尔市医院 | Analytical instrument and method for bladder cancer treatment target preparation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2264913Y (en) | Negative-pressure feeding automatic zero-setting burette | |
| CN201135930Y (en) | Flotation automatic dosing device | |
| CN2068418U (en) | Batch liquid-removing apparatus for chemical test | |
| CN2093032U (en) | Automatic moving liquid device | |
| CN213913854U (en) | Novel pasteur straw | |
| CN2738881Y (en) | Pneumatic extrusion-decoy type liquid transfer device | |
| CN206974491U (en) | One kind indexes adjustable micro flowmeter | |
| CN221334275U (en) | Liquid transfer device of DNA extraction device | |
| CN216964663U (en) | Test tube for weighing physical and chemical microorganisms | |
| CN2609656Y (en) | Suction zero self-regulation universal pipette | |
| CN2661281Y (en) | Vacuum pumping and filtering device | |
| CN86210246U (en) | Multipurpose liquid aspirator | |
| CN2531421Y (en) | Automatic liquid level control device for central liquid supply system | |
| CN2323858Y (en) | Multifunctional convenient pipette | |
| CN2197059Y (en) | Milk catcher | |
| CN2424191Y (en) | ClO2 generator | |
| CN2137959Y (en) | Automatic electric liquid suction apparatus for medicine | |
| CN212722766U (en) | Quantitative chemical feeding system for chemical examination | |
| CN215209343U (en) | Tip suction head for automatic nucleic acid extraction equipment | |
| CN215821692U (en) | Multifunctional negative pressure liquid suction device | |
| CN202666004U (en) | Medicine cup with volume scale line and volume proportion scale line | |
| CN220116306U (en) | Complete set automatic control medicine adding equipment | |
| CN2801278Y (en) | Dropper | |
| CN208515990U (en) | A kind of silica gel storage device | |
| CN207735021U (en) | A kind of glass scales suction pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |