CN201441923U - Burette stand with accurate reading device - Google Patents
Burette stand with accurate reading device Download PDFInfo
- Publication number
- CN201441923U CN201441923U CN2009200216585U CN200920021658U CN201441923U CN 201441923 U CN201441923 U CN 201441923U CN 2009200216585 U CN2009200216585 U CN 2009200216585U CN 200920021658 U CN200920021658 U CN 200920021658U CN 201441923 U CN201441923 U CN 201441923U
- Authority
- CN
- China
- Prior art keywords
- buret
- stand
- cross bar
- reading device
- cross rod
- 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
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- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The utility model discloses a burette stand with an accurate reading device, which comprises a burette (1) and an iron rack (2), and is characterized in that a cross rod (4) is fixed on a vertical rod of the iron rack (2) through a rotating shaft (3); a corrosion-resistant micro-floating ball (6) is hung at one end of the cross rod (4) through a corrosion-resistant fiber silk thread (5); an arc-shaped graduated scale (7) is arranged at the other end of the cross rod (4), and fixed on the vertical rod of the iron rack (2) through a bracket (8). In the burette stand, since the floating ball is in direct contact with the bottom part of an arc-shaped concave liquid level, the marked figure is the value at the bottom part of the arc-shaped concave liquid level; under the amplification of the cross rod, the graduation of the scale are obviously amplified, so that the read figure error is very small, the difference caused by different technical levels of people is solved, and meanwhile, the structure is simple, and the operation is convenient.
Description
Technical field
The utility model relates to the improvement of a kind of laboratory with buret stand, specifically a kind of buret stand with the pin-point reading device.
Background technology
Acid base titration is that the laboratory is used as the demarcation standard liquid and does the most normal project of doing of substance quantitative analysis, during test, need buret is fixed on the iron stand, because of liquid level is arc concave, require during reading to read the scale of position, arc concave liquid level minimum point point of contact, eyes must be on the same horizontal plane with arc concave liquid level minimum point.Present method of operating is: during reading, earlier buret is taken off from the iron stand, grasped buret, and stretch out arm, buret is placed on the appropriate location, it is perpendicular to the ground that buret will keep, then reading.The deficiency of this method of operating is: the one, and labour intensity is big; The 2nd, regular meeting is because technical level of operators difference and usual practice cause bigger error in reading.
Summary of the invention
The purpose of this utility model is to provide a kind of need not that buret is taken off, and just can read the number of division of liquid level arc concave undercut surfaces in the buret fast and accurately, and the buret stand of simple in structure, easy to operate band pin-point reading device.
For reaching above purpose, the technical scheme that the utility model adopted is: the buret stand of this band pin-point reading device, by buret, the iron stand constitutes, buret is vertically fixed on the iron stand, titrating solution is housed in buret, it is characterized in that on the montant of iron stand by the fixing cross tube of turning cylinder, end at cross bar suspends corrosion resistant miniature ball float in midair by corrosion resistant fiber wire, establish the curved scale chi at the other end of cross bar, the curved scale chi is fixed on the montant of iron stand by support, the upper end scale of curved scale chi is corresponding with the lower end scale on the titration tube wall, and the lower end scale of curved scale chi is corresponding with the upper end scale of buret.The utility model is also implemented by following measure: be provided with the counterweigh sliding sleeve on outer section of cross bar; Length from cross bar the inner to turning cylinder and the length from turning cylinder to the cross bar outer end are 1: 2 or 1: 3; Described miniature corrosion resistant ball float can be hollow glass micropearl, and overall diameter is 1/2 of a dropper interior diameter.When using the utility model, ball float is placed in the buret, move position by the counterweigh sliding sleeve, make ball float just touch liquid level in the buret, and then open switch on the buret, carry out titration, when be titrated to a certain amount of after, read the scale on the curved scale chi again, be the scale on the buret.
The beneficial effects of the utility model are: the method that reads scale numerical value with present burette test on buret is compared, because ball float directly touches arc concave liquid level bottom, so, the numerical value that is marked is the numerical value of arc concave liquid level bottom, because cross bar has amplification, so scale has tangible amplification, the reading numerical values error is very little, avoided because of the different differences that cause of people's technical merit, simultaneously, simple in structure, easy to operate.
Description of drawings
Fig. 1 looks schematic diagram for the utility model structure master.
The specific embodiment
Make the utility model with reference to accompanying drawing 1.The buret stand of this band pin-point reading device, by buret 1, iron stand 2 constitutes, buret 1 is vertically fixed on the iron stand 2, in buret 1, fill titrating solution, it is characterized in that on the montant of iron stand 2, passing through fixedly cross tube 4 of turning cylinder 3, end at cross bar 4 suspends corrosion resistant miniature ball float 6 in midair by corrosion resistant fiber wire 5, establish curved scale chi 7 at the other end of cross bar 4, curved scale chi 7 is fixed on the montant of iron stand 2 by support 8, the upper end scale of curved scale chi 7 is corresponding with the lower end scale on buret 1 wall, and the lower end scale of curved scale chi 7 is corresponding with the upper end scale on buret 1 wall.On outer section of cross bar 4, be provided with counterweigh sliding sleeve 9; Length from cross bar 4 the inners to turning cylinder 3 is 1: 2 or 1: 3 with the length of 4 outer ends from turning cylinder 3 to cross bar; Described corrosion resistant miniature ball float 6 is a hollow glass micropearl, and overall diameter is 1/2 of buret 1 interior diameter.
Claims (2)
1. buret stand with the pin-point reading device, constitute by buret (1), iron stand (2), buret (1) is vertically fixed on the iron stand (2), in buret (1), fill titrating solution, it is characterized in that on the montant of iron stand (2), passing through fixedly cross tube (4) of turning cylinder (3), end at cross bar (4) passes through corrosion resistant miniature ball float (6) in corrosion resistant fiber wire (5) suspention, establish curved scale chi (7) at the other end of cross bar (4), curved scale chi (7) is fixed on the montant of iron stand (2) by support (8).
2. the buret stand of band pin-point reading device according to claim 1 is characterized in that being provided with counterweigh sliding sleeve (9) on outer section of cross bar (4); From cross bar (4) inner to the length of turning cylinder (3) be 1: 2 or 1: 3 with length from turning cylinder (3) to cross bar (4) outer end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200216585U CN201441923U (en) | 2009-04-29 | 2009-04-29 | Burette stand with accurate reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200216585U CN201441923U (en) | 2009-04-29 | 2009-04-29 | Burette stand with accurate reading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201441923U true CN201441923U (en) | 2010-04-28 |
Family
ID=42546598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200216585U Expired - Fee Related CN201441923U (en) | 2009-04-29 | 2009-04-29 | Burette stand with accurate reading device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201441923U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103081834A (en) * | 2013-01-11 | 2013-05-08 | 江苏世盛动物药业有限公司 | Fish fixing and metering oral medication device and use method thereof |
| CN105944785A (en) * | 2016-04-28 | 2016-09-21 | 安庆市峰邦工业产品设计有限公司 | Special purification device for acid-base titration |
| CN107179383A (en) * | 2017-07-18 | 2017-09-19 | 安徽理工大学 | The device of energy pin-point reading buret |
| CN112252139A (en) * | 2020-09-27 | 2021-01-22 | 深圳市盐田港建筑工程检测有限公司 | Highway bridge flatness detection equipment |
| CN112387324A (en) * | 2021-01-20 | 2021-02-23 | 潍坊市利程建材科技有限公司 | Detachable burette convenient to inside washing |
-
2009
- 2009-04-29 CN CN2009200216585U patent/CN201441923U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103081834A (en) * | 2013-01-11 | 2013-05-08 | 江苏世盛动物药业有限公司 | Fish fixing and metering oral medication device and use method thereof |
| CN105944785A (en) * | 2016-04-28 | 2016-09-21 | 安庆市峰邦工业产品设计有限公司 | Special purification device for acid-base titration |
| CN107179383A (en) * | 2017-07-18 | 2017-09-19 | 安徽理工大学 | The device of energy pin-point reading buret |
| CN107179383B (en) * | 2017-07-18 | 2023-04-07 | 安徽理工大学 | Device capable of accurately reading burette |
| CN112252139A (en) * | 2020-09-27 | 2021-01-22 | 深圳市盐田港建筑工程检测有限公司 | Highway bridge flatness detection equipment |
| CN112387324A (en) * | 2021-01-20 | 2021-02-23 | 潍坊市利程建材科技有限公司 | Detachable burette convenient to inside washing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100428 Termination date: 20100429 |