CN201988397U - Fine general constant burette - Google Patents

Fine general constant burette Download PDF

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Publication number
CN201988397U
CN201988397U CN2011200546205U CN201120054620U CN201988397U CN 201988397 U CN201988397 U CN 201988397U CN 2011200546205 U CN2011200546205 U CN 2011200546205U CN 201120054620 U CN201120054620 U CN 201120054620U CN 201988397 U CN201988397 U CN 201988397U
Authority
CN
China
Prior art keywords
burette
liquid storage
buret
storage spheroid
tubular body
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
Application number
CN2011200546205U
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Chinese (zh)
Inventor
刘德驹
仓金顺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yancheng Textile Vocational and Technical College
Original Assignee
Yancheng Textile Vocational and Technical College
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yancheng Textile Vocational and Technical College filed Critical Yancheng Textile Vocational and Technical College
Priority to CN2011200546205U priority Critical patent/CN201988397U/en
Application granted granted Critical
Publication of CN201988397U publication Critical patent/CN201988397U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A fine general constant burette belongs to a measuring tool for chemical experiments. The fine general constant burette comprises a tapered liquid feeding port, an upper liquid storing ball, a tube body, a lower liquid storing ball, a transverse tapered tubular body, a tapered plug and a liquid dripping head. By improving the shape of the constant burette, the accuracy of the volume reading of a titrant is improved; the fine general constant burette is simple in structure, convenient to use and high in generality; the space between the scale lines of the burette is large, the scale line is clear and the reading error is small; the solution filling is convenient; the accuracy and precision of the titrimetric analysis result can be effectively improved; and in virtue of tube body expansion in a part of a non-reading area, the difficulties of the reduction of the diameter of the tube body of the burette, the increase of the total length of the burette and the inconvenient operation are avoided.

Description

Meticulous universal constant buret
Technical field
The utility model relates to a kind of chemical experiment measurement instrument, particularly a kind of meticulous universal constant buret.
Background technology
At present, in chemical experiment, when carrying out the titrimetry experiment, often select 50mL constant buret for use.The about 75cm of buret length, minimum scale is 0.10mL, distance is little between the minimum scale line, be about 1mm, titrating solution consumption hundredths is estimated the reading difficulty, is easy to generate the error in reading of titrating solution volume, 20.00-30.00mL is an example with titration end-point titrating solution consumption, volumetric errors is ± during 0.03mL, relative error is ± 0.15%-± 0.10%, has exceeded the scope of titrimetry allowable error.If increase minimum scale distance between centers of tracks, reducing titrating solution volume reading error, and make tubule footpath buret, then cause the buret total length long, filled with solution difficulty, experimental implementation inconvenience, reduce the degree of accuracy and the precision of experimental result, do not reach the stoichiometry effect.The personnel of scientific research institution of chemical experiment in recent years constantly go solution to cause dropping liquid error in reading problem because of buret.Though in technology or done some improvement in shape, obtained certain effect, in chemical experiment, still existed the key technical problem that is difficult to overcome.
Summary of the invention
The purpose of this utility model is to overcome above deficiency, and a kind of meticulous universal constant buret is provided.Distance is big, clear between this buret graduation mark, and error in reading is little, and filled with solution is convenient, can effectively improve the accuracy and the accuracy of titrate the analysis result.
The technical scheme that its technical problem that solves the utility model adopts is: comprise the taper filling opening, last liquid storage spheroid, body, following liquid storage spheroid, the lateral taper tubular body, conical plug and liquid droping head, meticulous universal buret is the long cylinder shape of being made by glass, the body surface indicates measurement scale line and 0mL-50mL numeral, the upper end of buret is a taper filling opening, the lower end of taper filling opening be provided with a cone-shaped on the liquid storage spheroid, be provided with liquid storage spheroid under the cone-shaped in the lower end of last liquid storage spheroid, external diameter ratio of liquid storage spheroid has been dwindled under this, there is one section tubule lower end at following liquid storage spheroid, be provided with a lateral taper tubular body at the center of tubule, on the lateral taper tubular body, conical plug is housed, below the lateral taper tubular body, stretches out a little mouth of pipe liquid droping head is housed.
The design principle of this meticulous universal constant buret: the filling opening of meticulous universal constant buret upper end, adopt the shape of taper, be convenient to packing into of solution, there is the diameter of scale part body to be about 1/2 of conventional constant buret, make between its minimum scale line apart from increasing about 2 times, improve the accuracy of reading, the 5-20mL of body and 35-45mL place are designed to the cone-shaped spheroid, compensated the increase of buret caused body height because of caliber attenuates, the overall length of buret is remained unchanged substantially, handled easily, dwindling of the external diameter ratio of following liquid storage spheroid, use conical plug, buret is had to pack into the versatility of heterogeneity solution as titrating solution.
The beneficial effects of the utility model are: improve by body, effectively improved the accuracy of titrating solution volume reading the constant buret, and simple in structure, easy to operate, highly versatile.Distance scale is big, clear between this buret graduation mark, and error in reading is little, and filled with solution is convenient, can effectively improve the accuracy and the accuracy of titrate the analysis result, and, avoid the buret pipe diameter to diminish by the method that the part body expands, total length increases, unhandy difficulty.
Description of drawings
Be in conjunction with the accompanying drawings and embodiments the utility model to be further specified below:
It among the figure meticulous universal constant buret structural representation
In the drawings: 1. the taper filling opening, 2. go up the liquid storage spheroid, 3. body, 4. descend liquid storage spheroid, 5. lateral taper tubular body, 6. conical plug, 7. liquid droping head.
The specific embodiment
In the drawings: meticulous universal buret is the long cylinder shape of being made by glass, body 3 surfaces indicate measurement scale line and 0mL-50mL numeral, the upper end of buret is a taper filling opening 1, the lower end of taper filling opening 1 be provided with a cone-shaped on liquid storage spheroid 2, be provided with liquid storage spheroid 4 under the cone-shaped in the lower end of last liquid storage spheroid 2, external diameter ratio of liquid storage spheroid 4 has been dwindled under this, there is one section tubule lower end at following liquid storage spheroid 4, be provided with a lateral taper tubular body 5 at the center of tubule, conical plug 6 is housed on lateral taper tubular body 5, below lateral taper tubulose 5 bodies, stretches out a little mouth of pipe liquid droping head 7 is housed.
The filling opening of meticulous universal constant buret upper end, adopt the shape of taper, be convenient to packing into of solution, there is the diameter of scale part body to be about 1/2 of conventional constant buret, make between its minimum scale line apart from increasing about 2 times, improve the accuracy of reading, the 5-20mL of body and 35-45mL place are designed to the cone-shaped spheroid, compensated the increase of buret caused body height because of caliber attenuates, the overall length of buret is remained unchanged substantially, handled easily, the dwindling of following liquid storage spheroid 4 external diameter ratios uses conical plug 6 that buret is had can to pack into the versatility of heterogeneity solution as titrating solution.

Claims (1)

1. meticulous universal constant buret, comprise the taper filling opening, last liquid storage spheroid, body, following liquid storage spheroid, the lateral taper tubular body, conical plug and liquid droping head, it is characterized in that: meticulous universal buret is the long cylinder shape of being made by glass, the body surface indicates measurement scale line and 0mL-50mL numeral, the upper end of buret is a taper filling opening, the lower end of taper filling opening be provided with a cone-shaped on the liquid storage spheroid, be provided with liquid storage spheroid under the cone-shaped in the lower end of last liquid storage spheroid, external diameter ratio of liquid storage spheroid has been dwindled under this, there is one section tubule lower end at following liquid storage spheroid, be provided with a lateral taper tubular body at the center of tubule, on the lateral taper tubular body, conical plug is housed, below the lateral taper tubular body, stretches out a little mouth of pipe liquid droping head is housed.
CN2011200546205U 2011-02-25 2011-02-25 Fine general constant burette Expired - Fee Related CN201988397U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011200546205U CN201988397U (en) 2011-02-25 2011-02-25 Fine general constant burette

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011200546205U CN201988397U (en) 2011-02-25 2011-02-25 Fine general constant burette

Publications (1)

Publication Number Publication Date
CN201988397U true CN201988397U (en) 2011-09-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011200546205U Expired - Fee Related CN201988397U (en) 2011-02-25 2011-02-25 Fine general constant burette

Country Status (1)

Country Link
CN (1) CN201988397U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111665322A (en) * 2020-07-21 2020-09-15 韩笑 Precision constant burette for inspection and detection center

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111665322A (en) * 2020-07-21 2020-09-15 韩笑 Precision constant burette for inspection and detection center
CN111665322B (en) * 2020-07-21 2022-07-01 韩笑 Precision constant burette for inspection and detection center

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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: 20110928

Termination date: 20120225