CN202061632U - Variable-graduation measuring cylinder - Google Patents
Variable-graduation measuring cylinder Download PDFInfo
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- CN202061632U CN202061632U CN2011201434955U CN201120143495U CN202061632U CN 202061632 U CN202061632 U CN 202061632U CN 2011201434955 U CN2011201434955 U CN 2011201434955U CN 201120143495 U CN201120143495 U CN 201120143495U CN 202061632 U CN202061632 U CN 202061632U
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- graduated cylinder
- cylinder
- measuring cylinder
- funnel
- shaped structure
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Abstract
The utility model provides a variable-graduation measuring cylinder, which comprises an external measuring cylinder, and a transparent internal cylinder arranged in the external measuring cylinder and capable of moving up and down, wherein an internal measuring cylinder is arranged in the transparent internal cylinder, the upper end of the internal measuring cylinder is in a funnel-shaped structure, the upper end of the funnel-shaped structure is connected with an upper end of the transparent internal cylinder, the lower end of the transparent internal cylinder is sleeved with a rubber ring, the lower end of the internal measuring cylinder penetrates through the bottom surface of the transparent internal cylinder and is communicated with the external measuring cylinder, the bottom surface of the transparent internal cylinder and the side wall of the funnel-shaped structure are provided with vent holes, the side wall of the funnel-shaped structure is provided with a rotary seal sleeve, and the rotary seal sleeve is provided with an air vent corresponding to the vent hole on the side wall of the funnel-shaped structure. The variable-graduation measuring cylinder is formed by sleeving the internal measuring cylinder and the external measuring cylinder, and solves the problem of separated measurement of a large amount of liquid, so the measurement precision is improved, and simultaneously the frequency of accidental damage of the measuring cylinder is reduced. The external measuring cylinder of the variable-graduation measuring cylinder has a larger diameter and can be used for measuring liquid with larger volume, and the diameter of the internal measuring cylinder is smaller so as to ensure the accuracy of measurement.
Description
Technical field
The utility model belongs to the derived energy chemical technical field, be specifically related to a kind of laboratory as recipient use accurately measure liquid variation tolerance tube.
Background technology
Graduated cylinder is the chemical apparatuses of normal use in the chemical laboratory in modern times, the used graduated cylinder specification in laboratory is respectively 5ml now, 10ml, 50ml, 100ml, 200ml, 250ml, 500ml, 1000ml, 2000ml, existing part New Type of Measuring Cylinder is come into market in the graduated cylinder development in modern times, tool plug graduated cylinder is arranged, graduated cylinder etc. is filtered at the quartzy graduated cylinder and the no end, but these graduated cylinders only are the one division ranges, its minimum division value is all determined, the graduated cylinder that need choose two kinds of different sizes when measuring the solution of higher scale division value mixes gained liquid then, operation not only increases error like this, and the probability of instrument breakage is also than higher.
Under lab see the graduated cylinder of a lot of breakages through regular meeting; wherein most of breach that breakage is arranged in the upper end of graduated cylinder; very easily scratch; simultaneously because the chemicals that contacts in the middle of the laboratory is a lot; wherein part still is poisonous; medicine or solution were easy to penetrate into skin from wound, cause the human injury when hand was hurt!
Summary of the invention
The purpose of this utility model is to provide the high variation of a kind of precision to measure tube.
For reaching above-mentioned technical purpose, the utility model has adopted following technical scheme:
Comprise outer graduated cylinder and be arranged on the interior transparent inner core that can move up and down of outer graduated cylinder, be provided with interior graduated cylinder in the transparent inner core, the upper end of interior graduated cylinder is a funnel-shaped structure, the upper end of funnel-shaped structure links to each other with the upper end of transparent inner core, the lower end of transparent inner core is set with rubber ring, the lower end of interior graduated cylinder is passed the bottom surface of transparent inner core and is communicated with outer graduated cylinder, on the bottom surface of transparent inner core and the sidewall of funnel-shaped structure be provided with steam vent, the sidewall of funnel-shaped structure is provided with the rotation big envelope, the rotation big envelope be provided with the funnel-shaped structure sidewall on the corresponding passage of steam vent.
The lower end of described outer graduated cylinder is provided with the hexagon base.
The upper end of graduated cylinder is provided with and moves the liquid lid in described, moves liquid and covers and be provided with handle.
The lower end of graduated cylinder is a hemispherical in described.
The minimum division value of graduated cylinder is less than the minimum division value of outer graduated cylinder in described.
The material of described outer graduated cylinder, interior graduated cylinder and transparent inner core is a lucite.
Graduated cylinder and outer graduated cylinder two parts suit constituted in variation tolerance tube described in the utility model adopted, being used in combination of outer graduated cylinder and interior graduated cylinder solved the problem that gradation is measured when measuring big capacity liquid, improved the precision of measuring liquid, also reduce simultaneously the frequency of graduated cylinder accidental damage, reduced contacting of toxic liquid and human body; The outer graduated cylinder diameter of variation described in the utility model tolerance tube is bigger, has guaranteed once can take by weighing the liquid of larger volume, and the diameter of interior graduated cylinder is less to have guaranteed higher accuracy of measurement.The utility model forms the hollow hole pipe by interior graduated cylinder is arranged in the transparent inner core, one side has reduced the heavy burden weight of outer graduated cylinder, can utilize the inside and outside pressure reduction of the interior graduated cylinder of control to realize the variation degree measurement of liquid on the other hand, helps reducing measure error.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the location diagram of steam vent and passage;
Fig. 3 is the cutaway view at place, the transparent inner core of the utility model bottom surface;
Fig. 4 is the schematic diagram that the rotation big envelope opens and closes steam vent.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Referring to Fig. 1, Fig. 2 and Fig. 3, comprise outer graduated cylinder 1 and be arranged on the transparent inner core 2 that can move up and down in the outer graduated cylinder 1, graduated cylinder 3 in being provided with in the transparent inner core 2, the upper end of interior graduated cylinder 3 is a funnel-shaped structure, more convenient when measuring liquid, the inlet of interior graduated cylinder 3 upper ends is designed to funnel-form, simultaneously also can prevent spilling of liquid, the upper end of funnel-shaped structure links to each other with the upper end of transparent inner core 2, the lower end of transparent inner core 2 is set with rubber ring 4, the lower end of transparent inner core 2 puts the air-tightness that rubber ring 4 has increased transparent inner core 2 outer walls and outer graduated cylinder 1 inwall, guarantee noresidue liquid between tube, and strengthened friction, play the effect of stable transparent inner core 2 and interior graduated cylinder 3 positions, reduced to measure error, the lower end of interior graduated cylinder 3 is passed the bottom surface of transparent inner core 2 and is communicated with outer graduated cylinder 1, on the bottom surface of transparent inner core 2 and the sidewall of funnel-shaped structure be provided with steam vent 5, the sidewall of funnel-shaped structure is provided with rotation big envelope 6, and rotation big envelope 6 is provided with and the corresponding passage 7 of steam vent 5 on the funnel-shaped structure sidewall.
The lower end of described outer graduated cylinder 1 is provided with hexagon base 8, and base is made hexagon to improve the stability of whole graduated cylinder.
The upper end of graduated cylinder 3 is provided with and moves liquid lid 9 in described, moves liquid lid 9 and is provided with handle 10.
The lower end of graduated cylinder 3 is a hemispherical in described, and the lower end of interior graduated cylinder is designed to hemispherical and reduces liquid residual in graduated cylinder, makes things convenient for pouring out of liquid.
The minimum division value of graduated cylinder 3 is less than the minimum division value of outer graduated cylinder 1 in described.
The material of described outer graduated cylinder 1, interior graduated cylinder 3 and transparent inner core 2 is a lucite.The material of variation tolerance tube changes the harder lucite of material into, reduces its probability damaged in experimentation, has prolonged service life, has reduced cost, has saved the energy and fund.
Referring to Fig. 4, realize the control of inside and outside pressure by the butt joint of steam vent and passage.The number reading method of this graduated cylinder: liquid volume=outer graduated cylinder reading+interior graduated cylinder reading.
The explanation of measuring method example:
(1) measure solution less than 10ml:
(annotate: after just buying, at first instrument is taken apart and is used the distilled water rinse respectively, and with the protection smallclothes; cover washes clean in the lump such as 9 grades such as moving liquid; naturally dry then,, and cover and move liquid lid 9 in order to experiment at last with the nested successively assembling of interior graduated cylinder 3, transparent inner core 2 and outer graduated cylinder 1.)
1. open and move liquid lid 9, variation tolerance tube split and with the inside and outside graduated cylinder of liquid rinse to be measured 2-3 time, then that inside and outside graduated cylinder is nested good, and will move handle 10 bands that liquid covers at right hand forefinger (if the harmless also available forefinger of liquid to be measured is blocked interior graduated cylinder upper end liquid-inlet, for convenience and for the purpose of the safety, the suggestion user is with and moves the liquid lid); 2. rotating rotation big envelope 6 makes passage 7 relative with steam vent 5 on the funnel-shaped structure sidewall; 3. transparent inner core 2 is shifted onto outer graduated cylinder 1 bottom; 4. rotating rotation big envelope 6 makes the steam vent 5 on the funnel-shaped structure sidewall stagger with closed grate hole 5 with passage 7; 5. remove and move liquid lid 9, liquid is added by interior graduated cylinder 3, the reading of interior graduated cylinder 3 is a liquid volume; 6. the liquid lid of wearing with right hand forefinger 9 of moving is blocked interior graduated cylinder 3 upper end liquid-inlets, slowly transparent inner core is extracted out; 7. extract will moving liquid lid 9 near (1-2cm place) above the target container, liquid is flowed out by interior graduated cylinder lower end and the injection target container; 8. after use finishing, each parts is cleaned up the back dry naturally, at last the parts reorganization is buckled and move liquid and cover 9 and get final product.
When (2) measuring solution 10.0m1-100ml scope, such as the solution of measuring 50.2ml:
1. open and move liquid lid 9, variation tolerance tube split and with the inside and outside graduated cylinder of liquid rinse to be measured 2-3 time, then that inside and outside graduated cylinder is nested good, and the handle 10 that will move on the liquid lid 9 is with at right hand forefinger (if the harmless also available forefinger of liquid to be measured is blocked interior graduated cylinder upper end liquid-inlet, for convenience and for the purpose of the safety, the suggestion user is with and moves the liquid lid); 2. rotating rotation big envelope 6 makes passage 7 relative with steam vent 5 on the funnel-shaped structure sidewall; 3. transparent inner core is drawn high until the 50ml of outer graduated cylinder 1 graduation mark and align with the minimum groove of interior graduated cylinder 3; 4. remove and move liquid lid 9, inwardly drip liquid in the graduated cylinder 3, when liquid level rotates rotation big envelope 6 when the minimum graduation mark of interior graduated cylinder the steam vent 5 on the funnel-shaped structure sidewall is staggered with closed grate hole 5 with passage 7, continue to drip liquid in the inside graduated cylinder 3, because the pressure reduction inside and outside the interior graduated cylinder 3, liquid rises up into interior graduated cylinder 3, stops to add when liquid level aligns with the 0.2ml graduation mark of interior graduated cylinder, and at this moment interior graduated cylinder 3 readings add outer graduated cylinder 1 reading and are the volume of measuring liquid; 5. the liquid lid of wearing with right hand forefinger 9 of moving is blocked interior graduated cylinder 3 upper end liquid-inlets, slowly transparent inner core is extracted out then, the time will move liquid lid 9 near the target container top and extract, liquid is flowed out and is injected target container by interior graduated cylinder lower end, subsequently with the liquid pouring in the outer graduated cylinder to target container; 6. after use finishing, each parts is cleaned up the back dry naturally, at last the parts reorganization is buckled and move liquid and cover and get final product.
Graduated cylinder on the existing market is not only carried out the improvement on the material, and improved the precision of this series products, saved cost.Be easy to marketing, have practical value more, also have bigger development space.
The utility model is measured container except can be used as, and also can be used as liquid and receives instrument, compares its advantage with common vessel and is: retractable does not in height need backing plate; The liquid that the steams place of putting at any time all can accurately be read; Can avoid steaming the generation that liquid surpasses the graduated cylinder incident; Stability better; Save the operation of pipette.
Claims (6)
1. a variation is measured tube, it is characterized in that: comprise outer graduated cylinder (1) and be arranged on the interior transparent inner core (2) that can move up and down of outer graduated cylinder (1), be provided with interior graduated cylinder (3) in the transparent inner core (2), the upper end of interior graduated cylinder (3) is a funnel-shaped structure, the upper end of funnel-shaped structure links to each other with the upper end of transparent inner core (2), the lower end of transparent inner core (2) is set with rubber ring (4), the lower end of interior graduated cylinder (3) is passed the bottom surface of transparent inner core (2) and is communicated with outer graduated cylinder (1), on the bottom surface of transparent inner core (2) and the sidewall of funnel-shaped structure be provided with steam vent (5), the sidewall of funnel-shaped structure is provided with rotation big envelope (6), and rotation big envelope (6) is provided with and the corresponding passage (7) of steam vent (5) on the funnel-shaped structure sidewall.
2. according to the described a kind of variation tolerance tube of claim 1, it is characterized in that: the lower end of described outer graduated cylinder (1) is provided with hexagon base (8).
3. according to the described a kind of variation tolerance tube of claim 1, it is characterized in that: the upper end of graduated cylinder (3) is provided with and moves liquid lid (9) in described, moves liquid lid (9) and is provided with handle (10).
4. according to the described a kind of variation tolerance tube of claim 1, it is characterized in that: the lower end of graduated cylinder (3) is a hemispherical in described.
5. according to the described a kind of variation tolerance tube of claim 1, it is characterized in that: the minimum division value of graduated cylinder (3) is less than the minimum division value of outer graduated cylinder (1) in described.
6. according to the described a kind of variation tolerance tube of claim 1, it is characterized in that: the material of described outer graduated cylinder (1), interior graduated cylinder (3) and transparent inner core (2) is a lucite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201434955U CN202061632U (en) | 2011-05-09 | 2011-05-09 | Variable-graduation measuring cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201434955U CN202061632U (en) | 2011-05-09 | 2011-05-09 | Variable-graduation measuring cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202061632U true CN202061632U (en) | 2011-12-07 |
Family
ID=45055514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201434955U Expired - Fee Related CN202061632U (en) | 2011-05-09 | 2011-05-09 | Variable-graduation measuring cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202061632U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937471A (en) * | 2012-11-13 | 2013-02-20 | 无锡商业职业技术学院 | Accurate measuring cup |
| CN110987325A (en) * | 2019-12-28 | 2020-04-10 | 清华大学 | Device and method for measuring and recovering fluid seal leakage |
-
2011
- 2011-05-09 CN CN2011201434955U patent/CN202061632U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937471A (en) * | 2012-11-13 | 2013-02-20 | 无锡商业职业技术学院 | Accurate measuring cup |
| CN110987325A (en) * | 2019-12-28 | 2020-04-10 | 清华大学 | Device and method for measuring and recovering fluid seal leakage |
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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: 20111207 Termination date: 20120509 |