CN203720161U - Burette for medical inspection - Google Patents
Burette for medical inspection Download PDFInfo
- Publication number
- CN203720161U CN203720161U CN201420071922.7U CN201420071922U CN203720161U CN 203720161 U CN203720161 U CN 203720161U CN 201420071922 U CN201420071922 U CN 201420071922U CN 203720161 U CN203720161 U CN 203720161U
- Authority
- CN
- China
- Prior art keywords
- titration
- tube
- graduated tube
- valve
- wall
- 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
- 238000002558 medical inspection Methods 0.000 title claims abstract description 10
- 238000004448 titration Methods 0.000 claims abstract description 56
- 230000005055 memory storage Effects 0.000 claims description 6
- 238000010079 rubber tapping Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 8
- 239000011521 glass Substances 0.000 abstract description 6
- 238000002479 acid--base titration Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Devices For Use In Laboratory Experiments (AREA)
Abstract
The utility model discloses a burette for medical inspection. The burette comprises a titration graded tube, an overflowing storage device, a zero adjusting valve and a titration control device, wherein the upper end of the titration graded tube is connected with the overflowing storage device, the outer side of a tube wall is provided with a support frame, the support frame is connected with a magnifying glass, and the outer wall of the titration graded tube is also sleeved with a vernier sleeve with scales; the overflowing storage device is in a double-layer cavity structure; an outer cavity wall is provided with a liquid discharge valve, an opening is arranged in one end, far away from the titration graded tube, of an outer cavity; the outer cavity is connected with the titration control device through a rubber tube; an inner cavity wall is provided with a zero adjusting sharp mouth, and the zero adjusting valve is positioned in an inner cavity; the titration control device comprises a coarse adjustment device and a fine adjustment device; the coarse adjustment device comprises an air cylinder provided with a piston rod and a piston, the fine adjustment device comprises a fine adjustment knob, a threaded rod and a threaded tube, the coarse adjustment device is connected with the fine adjustment device through an air tube, the air tube is provided with an air tube valve. The burette disclosed by the utility model is reasonable in structure and convenient to operate, can carry out automatic zero adjustment and can be used for accurately controlling the liquid drop when being close to a terminal.
Description
Technical field
The utility model relates to a kind of medical inspection buret, belongs to medical inspection technique with the apparatus field.
Background technology
Buret is chemistry, chemical industry, the conventional check experimental apparatus in medicine and other fields laboratory, the buret generally using is now divided into two kinds of acid buret and base burets, its agent structure is one and is with graduated glass tube, there is a glass piston lower end of acid buret, open piston, liquid ooze in pipe; The lower end of base buret connects a cuvette with sharp mouth with proofed sleeve, and a glass ball is housed in proofed sleeve, and the proofed sleeve when with hand extruding glass bead outside, makes to manage interior formation one gap, and liquid ooze from dropper; When carrying out titrimetric experiment, buret of the prior art conventionally exist glass piston easy to leak, proofed sleeve easily aging, dress vs difficulty, easily produce bubble, zeroing while easily producing error, nearly terminal wayward, the acid base titration of drop can not be general etc. problem.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming existing in prior art, provides a kind of rational in infrastructure, easy to operate, can carry out automatic zero set (AZS), during nearly terminal, can accurately control drop, the buret that acid base titration can be general.
For achieving the above object, the utility model adopts following scheme:
A medical inspection buret, comprises titration graduated tube, overflow storage device, zeroing valve and dripping control device; Described titration graduated tube upper end is connected with overflow storage device, and titration graduated tube tube wall outside is provided with support, is connected with magnifier on support, and support can move up and down along titration scale tube wall, and titration graduated tube outer wall also overlaps the vernier sleeve having with scale; Described overflow storage device is double-layer cavity structure, and the wall of the nearly titration scale of outer cavity pipe end is provided with tapping valve, away from titration graduated tube end opening, by rubber tube, is connected with dripping control device; Internal layer cavity two ends diameter is greater than mid diameter, and one end communicates with titration graduated tube, and the wall of the other end is provided with the sharp mouth of zeroing; Described zeroing valve is positioned at the internal layer cavity of overflow storage device, zeroing valve is less than the internal diameter of titration graduated tube near the diameter of titration graduated tube one end, the diameter of the other end is greater than the internal diameter of titration graduated tube, and zeroing valve taper end equates with the distance of titration graduated tube zero graduation line to graduated tube top to the length of butt end; Described dripping control device comprises with the rack and rinion adjustment of the inflator composition of piston rod and piston and the micromatic setting being comprised of vernier adjustment knob, threaded rod, threaded line pipe, described rack and rinion adjustment is connected by tracheae with micromatic setting, tracheae is provided with tracheae valve, and the tracheae other end is connected with overflow memory storage by proofed sleeve.
On described vernier sleeve, be carved with the equally distributed scale of 10 lattice, the distance between adjacent scale equals 9/10 of buret minimum scale distance.
Described zeroing valve consists of plastics, and density is less than vs density.
The beneficial effects of the utility model are: (1) increases micromatic setting, can control accurately speed and the dropping liquid amount of titration; (2) utilize zeroing valve, can guarantee the stable of zero point, prevent from from flow liquid point mouth, entering bubble when mobile buret; (3) by magnifier and vernier sleeve, be used in conjunction with, can see more clearly the variation of liquid level, reading is more accurate, has improved the accuracy of titration results; (4) acid base titration all can be general, do not have the problems such as leakage or rubber tube are aging.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Description of reference numerals:
1-titration graduated tube; The outer cavity of 2-overflow memory storage; 3-tapping valve; 4-overflow memory storage internal layer cavity; The 5-sharp mouth that returns to zero; The 6-valve that returns to zero; 7-rubber tube; 8-tracheae valve; 9-tracheae; 10-piston; 11-piston rod; 12-vernier adjustment knob; 13-threaded rod; 14-threaded line pipe; 15-vernier sleeve; 16-support; 17-magnifier.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described, the utility model discloses a kind of medical inspection buret, comprise titration graduated tube 1, overflow storage device, zeroing valve 6 and dripping control device; Described titration graduated tube 1 upper end is connected with overflow storage device, titration graduated tube tube wall outside is provided with support 16, on support 16, be connected with magnifier 17, support 16 can move up and down along titration scale tube wall, and titration graduated tube outer wall also overlaps the vernier sleeve 15 having with scale; Described overflow storage device is double-layer cavity structure, and the wall of outer cavity 2 nearly titration scale pipe ends is provided with tapping valve 3, away from titration graduated tube end opening, by rubber tube 7, is connected with dripping control device; Internal layer cavity 4 two ends diameters are greater than mid diameter, and one end communicates with titration graduated tube 1, and the wall of the other end is provided with the sharp mouth 5 of zeroing; Described zeroing valve 6 is positioned at the internal layer cavity 4 of overflow storage device, zeroing valve 6 is less than the internal diameter of titration graduated tube near the diameter of titration graduated tube 1 one end, the diameter of the other end is greater than the internal diameter of titration graduated tube, and zeroing valve 6 taper ends equate with the distance of titration graduated tube zero graduation line to graduated tube top to the length of butt end; Described dripping control device comprises with the rack and rinion adjustment of the inflator composition of piston rod 11 and piston 10 and the micromatic setting being comprised of vernier adjustment knob 12, threaded rod 13, threaded line pipe 14, described rack and rinion adjustment is connected by tracheae 9 with micromatic setting, tracheae 9 is provided with tracheae valve 8, and tracheae 9 other ends are connected with overflow memory storage by proofed sleeve 7.
During use, titration graduated tube 1 is inserted in vs used, open tracheae valve 8, close tapping valve 3, pull piston rod 11 to bleed, now in pipe, produce negative pressure, under suction function, vs is drawn in titration graduated tube automatically, because the length of zeroing valve 6 taper ends to butt end equates with the distance of titration graduated tube zero graduation line to graduated tube top, zeroing valve 6 is less than the internal diameter of titration graduated tube near the diameter of titration graduated tube 1 one end, the diameter of the other end is greater than the internal diameter of titration graduated tube 1, therefore can return to zero by zeroing valve 6, spillage after automatic zero set (AZS) is kept in to the outer cavity of overflow memory storage, after zeroing, close tracheae valve 8.During titration, open the tracheae valve of rack and rinion adjustment branch road, promote piston rod 11, make liquid approach titration end-point with fast speed, close the tracheae valve of rack and rinion adjustment branch road, then open the tracheae valve of micromatic setting branch road, rotary fine adjustment knob 12, carries out accurate quantification titration.After titration finishes, vernier sleeve 15 and magnifier 17 are moved to target scale zone, to obtain scale reading the most accurately, after experiment finishes, spillage is discharged by tapping valve 3.
Although above-mentioned, by reference to the accompanying drawings embodiment of the present utility model is described; but the not restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (3)
1. a medical inspection buret, is characterized in that, comprises titration graduated tube, overflow storage device, zeroing valve and dripping control device; Described titration graduated tube upper end is connected with overflow storage device, and titration graduated tube tube wall outside is provided with support, is connected with magnifier on support, and support can move up and down along titration scale tube wall, and titration graduated tube outer wall also overlaps the vernier sleeve having with scale; Described overflow storage device is double-layer cavity structure, and the wall of the nearly titration scale of outer cavity pipe end is provided with tapping valve, away from titration graduated tube end opening, by rubber tube, is connected with dripping control device; Internal layer cavity two ends diameter is greater than mid diameter, and one end communicates with titration graduated tube, and the wall of the other end is provided with the sharp mouth of zeroing; Described zeroing valve is positioned at the internal layer cavity of overflow storage device, zeroing valve is less than the internal diameter of titration graduated tube near the diameter of titration graduated tube one end, the diameter of the other end is greater than the internal diameter of titration graduated tube, and zeroing valve taper end equates with the distance of titration graduated tube zero graduation line to graduated tube top to the length of butt end; Described dripping control device comprises with the rack and rinion adjustment of the inflator composition of piston rod and piston and the micromatic setting being comprised of vernier adjustment knob, threaded rod, threaded line pipe, described rack and rinion adjustment is connected by tracheae with micromatic setting, tracheae is provided with tracheae valve, and the tracheae other end is connected with overflow memory storage by proofed sleeve.
2. a kind of medical inspection buret as claimed in claim 1, is characterized in that, is carved with the equally distributed scale of 10 lattice on described vernier sleeve, and the distance between adjacent scale equals 9/10 of buret minimum scale distance.
3. a kind of medical inspection buret as claimed in claim 1, is characterized in that, described zeroing valve consists of plastics, and density is less than vs density.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420071922.7U CN203720161U (en) | 2014-02-19 | 2014-02-19 | Burette for medical inspection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420071922.7U CN203720161U (en) | 2014-02-19 | 2014-02-19 | Burette for medical inspection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203720161U true CN203720161U (en) | 2014-07-16 |
Family
ID=51159301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420071922.7U Expired - Fee Related CN203720161U (en) | 2014-02-19 | 2014-02-19 | Burette for medical inspection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203720161U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106824320A (en) * | 2017-03-14 | 2017-06-13 | 台州职业技术学院 | A kind of dual-purpose buret |
| CN107656010A (en) * | 2017-10-27 | 2018-02-02 | 张凌睿 | A kind of experiment dropper |
| CN112156820A (en) * | 2020-08-28 | 2021-01-01 | 江苏福维健康科技有限公司 | Dropper with accurate metering function and using method thereof |
-
2014
- 2014-02-19 CN CN201420071922.7U patent/CN203720161U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106824320A (en) * | 2017-03-14 | 2017-06-13 | 台州职业技术学院 | A kind of dual-purpose buret |
| CN107656010A (en) * | 2017-10-27 | 2018-02-02 | 张凌睿 | A kind of experiment dropper |
| CN112156820A (en) * | 2020-08-28 | 2021-01-01 | 江苏福维健康科技有限公司 | Dropper with accurate metering function and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20150219 |
|
| EXPY | Termination of patent right or utility model |