CN112387324A - Detachable burette convenient to inside washing - Google Patents
Detachable burette convenient to inside washing Download PDFInfo
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- CN112387324A CN112387324A CN202110072192.7A CN202110072192A CN112387324A CN 112387324 A CN112387324 A CN 112387324A CN 202110072192 A CN202110072192 A CN 202110072192A CN 112387324 A CN112387324 A CN 112387324A
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- liquid storage
- storage pipe
- burette
- wall
- fixedly connected
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
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- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention discloses a detachable burette convenient for internal cleaning, and relates to the technical field of titration equipment. The invention comprises a fixing mechanism; the upper surface of the first fixing ring is rotatably connected with a first threaded rod; the peripheral side surface of the first threaded rod is in threaded connection with a moving block; one side surface of the moving block is fixedly connected with a capacity graduated scale; the inner wall of the first fixing ring is in clearance fit with a liquid storage mechanism; an internal thread groove is fixedly connected to the position, close to the top end, of the inner wall of the first liquid storage pipe; the upper surface of the hollow round table is fixedly connected with a second liquid storage pipe. According to the invention, through the design of the first liquid storage pipe, the control valve, the second liquid storage pipe, the third liquid storage pipe and the fixing mechanism, the burette can be quickly disassembled and assembled, the interior of the burette can be conveniently cleaned, the cleaning efficiency of the burette is greatly improved, meanwhile, through the arrangement of the control valve, the addition of a titration reagent in the burette can be conveniently carried out, the direct manual pouring of a reagent bottle is reduced, and the leakage of the reagent is effectively avoided.
Description
Technical Field
The invention belongs to the technical field of titration equipment, and particularly relates to a detachable burette convenient for internal cleaning.
Background
Burettes are volumetric instruments used to accurately dispense an indeterminate amount of liquid. Is made of a slender and uniform glass tube, the tube is provided with scales, the lower end of the tube is provided with a sharp mouth, and the middle of the tube is provided with a throttle for controlling the titration speed. When carrying out the titration experiment, need control the volume of titrating through the throttle on the control buret, when beginning to titrate, for the accuracy of guaranteeing the titration experiment, often need can titrate to zero scale mark department with the titration reagent filling in the buret.
The existing burette has a single function, is generally of an integrated structure, is long in size, inconvenient to move and take and easy to collide to cause fragmentation, is inconvenient to wash the interior due to long length after being used, greatly reduces the cleaning efficiency of the burette, and easily occupies more time to delay the progress of an experiment; the burette is provided with scales for observing the consumption of the titration reagent, but the diameter and the volume of the burette are small, the scale value marked on the burette is small, and the accuracy is basically kept at one percent, so that the fine scales make a user very difficult to read parameters when using the burette, and the titration is excessive if not even, thereby causing experimental errors; general buret all fixes through the iron stand platform, and the iron stand platform itself is comparatively heavy, and the removal of being not convenient for, and the centre gripping of buret is fixed comparatively troublesome, is not convenient for carry out the nimble regulation of the height that the buret was located according to the height of titrating the volumetric flask, has increased operating personnel's intensity of labour. Therefore, we have devised a removable burette that facilitates internal cleaning to solve the above problems.
Disclosure of Invention
The invention aims to provide a detachable burette convenient for internal cleaning, which solves the problems that the prior burette has single function, cannot be detached, is inconvenient for internal cleaning, is inconvenient for reading according to a scale mark on the burette, is easy to cause experimental error, cannot flexibly adjust the position of a zero scale mark according to the actual position of a liquid level, is relatively troublesome for clamping and fixing the burette by an iron stand, is inconvenient for flexibly adjusting the height of the burette according to the height of a titration volumetric flask, and increases the labor intensity of operators by the design of a first fixing ring, a second fixing ring, a rectangular through hole, an arc-shaped guide hole, a first threaded rod, a volumetric scale, a liquid storage mechanism, a second threaded rod, an inclined support rod, a driving ring and a spring.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a detachable burette convenient for internal cleaning, which comprises a fixing mechanism; the fixing mechanism comprises a first fixing ring and a second fixing ring; the upper surface of the first fixing ring is symmetrically and fixedly connected with first vertical rods; the top end of the first vertical rod is fixedly connected with the lower surface of the second fixing ring; the upper surface of the second fixing ring is provided with a rectangular through hole and an arc-shaped guide hole respectively; the inner part of the rectangular through hole is communicated with the inner part of the arc-shaped guide hole; the upper surface of the first fixing ring is rotatably connected with a first threaded rod; one end of the first threaded rod penetrates through the rectangular through hole; the peripheral side surface of the first threaded rod is in threaded connection with a moving block; one side surface of the moving block is fixedly connected with a capacity graduated scale; the inner wall of the first fixing ring is in clearance fit with a liquid storage mechanism; the liquid storage mechanism comprises a first liquid storage pipe and a control valve; the outer wall of the first liquid storage pipe is in clearance fit with the inner wall of the first fixing ring; an internal thread groove is fixedly connected to the position, close to the top end, of the inner wall of the first liquid storage pipe; the inner wall of the internal thread groove is in threaded connection with a hollow round table; the upper surface of the hollow round table is fixedly connected with a second liquid storage pipe; and the outer wall of the second liquid storage pipe is in clearance fit with the inner wall of the second fixing ring.
Further, the control valve comprises a hollow mounting ring; the upper surface and the lower surface of the hollow mounting ring are both fixedly connected with limiting rings; the outer wall of one limiting ring is in threaded fit with the inner wall of the second liquid storage pipe;
and the outer wall of the other limiting ring is in threaded connection with a third liquid storage pipe.
Furthermore, the peripheral side surface of the capacity dividing ruler is in sliding fit with the inner part of the arc-shaped guide hole;
the peripheral side surface of the moving block is in sliding fit with the inner wall of the rectangular through hole;
the outer diameter of the hollow mounting ring, the outer diameter of the first liquid storage pipe, the outer diameter of the second liquid storage pipe and the outer diameter of the third liquid storage pipe are the same;
the volume graduated scale is of an arc-shaped structure, and one side face of the volume graduated scale is attached to the outer wall of the second liquid storage pipe.
Furthermore, a plurality of second upright posts are fixedly connected to the lower surface of the first fixing ring along the circumferential direction; one end of the second upright rod is fixedly connected with an annular supporting plate;
the side surface of the first liquid storage pipe is close to the bottom and is clamped with the inner wall of the annular supporting plate.
Furthermore, the lower surface of the first fixing ring is symmetrically hinged with inclined supporting rods; one end of the inclined supporting rod is hinged with an arched bottom plate.
Furthermore, a through hole is formed in one side face of one arched bottom plate, and a second threaded rod is sleeved in the through hole; one end of the second threaded rod is fixedly connected with one side face of the other arched bottom plate.
Further, the peripheral side surface of the second threaded rod is in threaded connection with a driving ring; one side surface of the driving ring is tightly attached to one side surface of one of the arched bottom plates.
Further, a spring is sleeved outside the second threaded rod; one end of the spring is fixedly connected with one side surface of one arched bottom plate;
the other end of the spring is fixedly connected with one side surface of the other arched bottom plate.
The invention has the following beneficial effects:
1. according to the invention, through the design of the first liquid storage pipe, the control valve, the internal thread groove, the hollow round table, the second liquid storage pipe, the hollow mounting ring, the limiting ring and the third liquid storage pipe, the burette can be quickly disassembled and assembled, the interior of the burette is convenient to clean, the cleaning efficiency of the burette is greatly improved, the possibility of collision and fragmentation in the cleaning process of the burette is effectively reduced, the movement and the storage of the burette are convenient, meanwhile, the addition of a titration reagent in the burette can be conveniently carried out through the arrangement of the control valve, the direct pouring by holding a reagent bottle is reduced, the reagent is effectively prevented from being leaked, and the experiment risk is reduced.
2. According to the invention, through the design of the rectangular through hole, the arc-shaped guide hole, the first threaded rod, the moving block and the capacity scale, the separation of the scale mark and the burette body can be realized, the reading of the scale mark is convenient, the reading accuracy is improved, the experimental error caused by the reading problem is effectively avoided, the position of the zero scale mark can be flexibly adjusted according to the actual position of the liquid level, the parallel and level between the liquid level and the zero scale mark is controlled without depending on the adding amount of a reagent, the operation is very convenient, and the titration efficiency is greatly improved.
3. According to the invention, through the design of the first fixing ring, the second fixing ring, the annular supporting plate, the inclined supporting rod, the arched bottom plate, the second threaded rod, the driving ring and the spring, the burette can be rapidly clamped and fixed, the flexible adjustment of the height of the burette is facilitated, the titration requirements of titration volumetric flasks with different heights are met, the structure is simple, the operation is convenient, and the labor intensity of operators is greatly reduced.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a removable burette for easy internal cleaning;
FIG. 2 is a front view of the structure of FIG. 1;
FIG. 3 is a schematic structural view of the fixing mechanism;
FIG. 4 is a left side view of the structure of FIG. 3;
FIG. 5 is a schematic view of a first reservoir tube;
FIG. 6 is a schematic view of the structure of FIG. 5 at another angle;
FIG. 7 is a schematic view of a second reservoir tube;
FIG. 8 is a schematic structural view of a control valve;
FIG. 9 is a schematic view of a third liquid storage tube;
in the drawings, the components represented by the respective reference numerals are listed below:
1-a fixing mechanism, 101-a first fixing ring, 102-a second fixing ring, 103-a first upright rod, 104-a rectangular through hole, 105-an arc-shaped guide hole, 106-a first threaded rod, 107-a moving block, 108-a capacity scale, 109-a liquid storage mechanism, 110-a first liquid storage pipe, 111-a control valve, 112-an internal thread groove, 113-a hollow circular truncated cone, 114-a second liquid storage pipe, 115-a hollow mounting ring, 116-a limiting ring, 117-a third liquid storage pipe, 118-a second upright rod, 119-an annular supporting plate, 120-an inclined supporting rod, 121-an arc-shaped bottom plate, 122-a second threaded rod, 123-a driving ring and 124-a spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-9, the present invention is a detachable burette convenient for internal cleaning, which comprises a fixing mechanism 1;
the fixing mechanism 1 comprises a first fixing ring 101 and a second fixing ring 102; the upper surface of the first fixing ring 101 is symmetrically and fixedly connected with a first upright rod 103; the top end of the first upright rod 103 is fixedly connected with the lower surface of the second fixing ring 102;
the upper surface of the second fixing ring 102 is respectively provided with a rectangular through hole 104 and an arc-shaped guide hole 105; the inside of the rectangular through hole 104 is communicated with the inside of the arc-shaped guide hole 105;
the upper surface of the first fixing ring 101 is rotatably connected with a first threaded rod 106; one end of the first threaded rod 106 penetrates through the rectangular through hole 104;
a moving block 107 is connected to the circumferential side surface of the first threaded rod 106 through threads; one side surface of the moving block 107 is fixedly connected with a capacity graduated scale 108, and a zero graduation line of the capacity graduated scale is positioned at the uppermost end; by rotating the first threaded rod 106, the capacity graduated scale 108 is moved up and down in the vertical direction by utilizing the thread matching effect between the first threaded rod 106 and the moving block 107, so that the zero graduation line on the capacity graduated scale 108 is continuously moved and adjusted, the zero graduation line can be adjusted according to the specific position of the liquid level of the titration reagent, the liquid level is controlled at the zero graduation line without controlling the addition amount of the reagent, and the operation is very convenient;
the inner wall of the first fixing ring 101 is in clearance fit with a liquid storage mechanism 109; the liquid storage mechanism 109 comprises a first liquid storage pipe 110 and a control valve 111; the outer wall of the first liquid storage pipe 110 is in clearance fit with the inner wall of the first fixing ring 101;
an internal thread groove 112 is fixedly connected to the inner wall of the first liquid storage pipe 110 near the top end; the inner wall of the internal thread groove 112 is in threaded connection with a hollow round table 113, and a leak-proof thread is adopted for matching; the upper surface of the hollow round platform 113 is fixedly connected with a second liquid storage pipe 114; the outer wall of the second reservoir 114 is in clearance fit with the inner wall of the second retaining ring 102.
Wherein, as shown in fig. 1 and 8, the control valve 111 includes a hollow mounting ring 115; the upper surface and the lower surface of the hollow mounting ring 115 are both fixedly connected with limit rings 116; wherein the outer wall of one of the limiting rings 116 is in threaded fit with the inner wall of the second liquid storage pipe 114;
the outer wall of the other limiting ring 116 is in threaded connection with a third liquid storage pipe 117; when the consumption amount of the titrant is small, the titrant can be filled into the first liquid storage pipe 110 and the second liquid storage pipe 114, and the liquid level is kept below the control valve 111, and the control valve 111 is in a closed state.
As shown in fig. 1-3 and fig. 5 and 8, the peripheral side surface of the volume scale 108 is in sliding fit with the inside of the arc-shaped guide hole 105;
the peripheral side surface of the moving block 107 is in sliding fit with the inner wall of the rectangular through hole 104;
the outer diameter of the hollow mounting ring 115, the outer diameter of the first reservoir 110, the outer diameter of the second reservoir 114 and the outer diameter of the third reservoir 117 are the same;
the volume scale 108 has an arc-shaped structure, and one side of the volume scale 108 is attached to the outer wall of the second liquid storage tube 114.
As shown in fig. 1-2, the lower surface of the first fixing ring 101 is fixedly connected with a plurality of second vertical rods 118 along the circumferential direction; one end of the second upright rod 118 is fixedly connected with an annular supporting plate 119;
the circumferential side surface of the first reservoir 110 is clamped with the inner wall of the annular support plate 119 near the bottom.
As shown in fig. 3-4, the lower surface of the first fixing ring 101 is symmetrically hinged with inclined supporting rods 120; one end of the inclined supporting rod 120 is hinged with an arched bottom plate 121;
one side surface of one arched bottom plate 121 is provided with a through hole, and a second threaded rod 122 is sleeved in the through hole; one end of the second threaded rod 122 is fixedly connected with one side surface of the other arched bottom plate 121;
a driving ring 123 is connected to the peripheral side surface of the second threaded rod 122 in a threaded manner; one side surface of the driving ring 123 is tightly attached to one side surface of one of the arched bottom plates 121; by rotating the driving ring 123, one of the arched bottom plates 121 is pushed to horizontally move along the second threaded rod 122 by utilizing the thread matching action between the driving ring 123 and the second threaded rod 122, so that the flexible adjustment of the height of the first fixing ring 101 is realized, and the titration requirements of reagent bottles with different heights are met;
a spring 124 is sleeved outside the second threaded rod 122 and is always in a compressed state; one end of the spring 124 is fixedly connected with one side of one of the arched bottom plates 121;
the other end of the spring 124 is fixedly connected with one side surface of the other arched bottom plate 121; the fixing of the arched bottom plate 121 after the position adjustment is realized by utilizing the elastic thrust action of the spring 124 and the limiting action of the driving ring 123, the stability of titration is improved, and the accuracy of experimental data is favorably ensured.
The working principle of the embodiment is as follows: when the titration experiment device is used, firstly, the titration experiment device is placed on an experiment operating platform which needs to carry out titration experiments, the driving ring 123 is rotated according to the height of a reagent bottle which needs to carry out titration and contains reagents, and one of the arched bottom plates 121 is pushed to horizontally move along the second threaded rod 122 by utilizing the thread matching effect between the driving ring 123 and the second threaded rod 122, so that the flexible adjustment of the height of the first fixing ring 101 is realized, and the first fixing ring 101 is adjusted to the needed height; then, the assembly of the liquid storage mechanism 109 is started, the hollow round table 113 on the second liquid storage pipe 114 is inserted into the internal thread groove 112 on the first liquid storage pipe 110, the second liquid storage pipe 114 is rotated until the second liquid storage pipe 114 is stably installed at the upper end of the first liquid storage pipe 110, the control valve 111 is stably installed at the upper end of the second liquid storage pipe 114 in the same operation mode, the third liquid storage pipe 117 is stably installed on the control valve 111, so that the rapid assembly of the liquid storage mechanism 109 is realized, then the second liquid storage pipe 102 slides into the liquid storage mechanism 109, the liquid storage mechanism 109 is pushed downwards until the first liquid storage pipe 110 is supported on the annular support plate 119, so that the stable installation of the liquid storage mechanism 109 and the fixing mechanism 1 is smoothly realized, then the control valve 111 is opened, the titrant is filled from the upper end of the third liquid storage pipe 117, when the amount of the titrant required for a single experiment is small, the titrant can be filled to a position below the control valve 111 at the liquid level, after the titration reagent is filled, the control valve 111 is closed, a certain amount of titration reagent is filled in the third liquid storage tube 117, after the titration reagent in the first liquid storage tube 110 and the second liquid storage tube 114 is consumed, the titration reagent does not need to be taken from the reagent bottle, the control valve 111 can be directly opened, the titration reagent stored in the third liquid storage tube 117 flows into the first liquid storage tube 110 and the second liquid storage tube 114, the operation is extremely simple, the time is saved, the efficiency of a titration experiment is greatly improved, the control of the addition amount of the titration reagent is facilitated, the reagent bottle is directly held by hand to pour the reagent which is easy to leak, the reagent is wasted, the experiment operating console is polluted, the danger can be caused, and the addition amount of the reagent exceeds a zero scale mark; in the process of titration experiment, reagent is added, the liquid level is required to be kept at the position which is parallel to the zero scale line, after the titration experiment is finished, the residual titration reagent amount in a burette is large, the reagent is easy to pollute when the titration reagent is poured back into a reagent bottle, if the titration reagent is directly poured, the cost of the titration experiment is greatly increased, the capacity scale 108 is vertically moved up and down by utilizing the thread matching action between the first threaded rod 106 and the moving block 107 through rotating the first threaded rod 106, so that the zero scale line on the capacity scale 108 is continuously moved and adjusted, the zero scale line on the capacity scale 108 can be adjusted according to the specific position of the liquid level of the titration reagent, the liquid level is controlled at the zero scale line without controlling the reagent adding amount, the operation is very convenient, when the titration reagent is less in the burette, the zero scale line on the capacity scale 108 can still be parallel to the liquid level by vertically adjusting the capacity scale 108, and then can carry out the titration experiment next, need not to add titration reagent again and can titrate again to zero scale mark department, improved the efficiency of titrating greatly, be favorable to accelerating the progress of titration experiment.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. A detachable burette convenient for internal cleaning comprises a fixing mechanism (1); the method is characterized in that:
the fixing mechanism (1) comprises a first fixing ring (101) and a second fixing ring (102); the upper surface of the first fixing ring (101) is symmetrically and fixedly connected with a first vertical rod (103); the top end of the first vertical rod (103) is fixedly connected with the lower surface of the second fixing ring (102);
the upper surface of the second fixing ring (102) is respectively provided with a rectangular through hole (104) and an arc-shaped guide hole (105); the interior of the rectangular through hole (104) is communicated with the interior of the arc-shaped guide hole (105);
the upper surface of the first fixing ring (101) is rotatably connected with a first threaded rod (106); one end of the first threaded rod (106) penetrates through the rectangular through hole (104);
a moving block (107) is connected to the peripheral side surface of the first threaded rod (106) in a threaded manner; one side surface of the moving block (107) is fixedly connected with a capacity graduated scale (108);
a liquid storage mechanism (109) is in clearance fit with the inner wall of the first fixing ring (101); the liquid storage mechanism (109) comprises a first liquid storage pipe (110) and a control valve (111); the outer wall of the first liquid storage pipe (110) is in clearance fit with the inner wall of the first fixing ring (101);
an internal thread groove (112) is fixedly connected to the position, close to the top end, of the inner wall of the first liquid storage pipe (110); the inner wall of the internal thread groove (112) is in threaded connection with a hollow round table (113); the upper surface of the hollow round table (113) is fixedly connected with a second liquid storage pipe (114); the outer wall of the second liquid storage pipe (114) is in clearance fit with the inner wall of the second fixing ring (102).
2. A removable burette for facilitating internal cleaning according to claim 1, wherein said control valve (111) comprises a hollow mounting ring (115); the upper surface and the lower surface of the hollow mounting ring (115) are fixedly connected with limit rings (116); the outer wall of one limiting ring (116) is in threaded fit with the inner wall of the second liquid storage pipe (114);
the outer wall of the other limiting ring (116) is in threaded connection with a third liquid storage pipe (117).
3. A removable burette facilitating internal cleaning according to claim 2, wherein the peripheral side of the volume scale (108) is in sliding fit with the inside of the arc-shaped guide hole (105);
the peripheral side surface of the moving block (107) is in sliding fit with the inner wall of the rectangular through hole (104);
the outer diameter of the hollow mounting ring (115), the outer diameter of the first liquid storage pipe (110), the outer diameter of the second liquid storage pipe (114) and the outer diameter of the third liquid storage pipe (117) are the same;
the volume graduated scale (108) is of an arc-shaped structure, and one side face of the volume graduated scale (108) is attached to the outer wall of the second liquid storage pipe (114).
4. A detachable burette convenient for internal cleaning according to claim 1, wherein a plurality of second vertical rods (118) are fixedly connected with the lower surface of the first fixing ring (101) along the circumferential direction; one end of the second upright rod (118) is fixedly connected with an annular supporting plate (119);
the peripheral side surface of the first liquid storage pipe (110) is clamped with the inner wall of the annular supporting plate (119) near the bottom.
5. A removable burette facilitating internal cleaning according to claim 1, wherein the lower surface of the first fixing ring (101) is symmetrically hinged with an inclined support bar (120); one end of the inclined supporting rod (120) is hinged with an arched bottom plate (121).
6. A detachable burette convenient for internal cleaning according to claim 5, wherein a through hole is arranged on one side surface of the arched bottom plate (121), and a second threaded rod (122) is sleeved in the through hole; one end of the second threaded rod (122) is fixedly connected with one side surface of the other arched bottom plate (121).
7. A detachable burette for facilitating internal cleaning according to claim 6, wherein a driving ring (123) is threadedly connected to the peripheral side of the second threaded rod (122); one side surface of the driving ring (123) is tightly attached to one side surface of one of the arched bottom plates (121).
8. A removable burette for facilitating internal cleaning according to claim 7, wherein said second threaded rod (122) is externally sleeved with a spring (124); one end of the spring (124) is fixedly connected with one side surface of one arched bottom plate (121);
the other end of the spring (124) is fixedly connected with one side surface of the other arched bottom plate (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110072192.7A CN112387324B (en) | 2021-01-20 | 2021-01-20 | Detachable burette convenient to inside washing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110072192.7A CN112387324B (en) | 2021-01-20 | 2021-01-20 | Detachable burette convenient to inside washing |
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| Publication Number | Publication Date |
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| CN112387324A true CN112387324A (en) | 2021-02-23 |
| CN112387324B CN112387324B (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110072192.7A Expired - Fee Related CN112387324B (en) | 2021-01-20 | 2021-01-20 | Detachable burette convenient to inside washing |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201441923U (en) * | 2009-04-29 | 2010-04-28 | 陈爱华 | Burette stand with accurate reading device |
| US20130189167A1 (en) * | 2012-01-19 | 2013-07-25 | Don Kosterman | Micro Buret |
| US20140068954A1 (en) * | 2012-09-11 | 2014-03-13 | Turki Awwad Al-Dhafiri | Cylindrical ruler |
| CN204448045U (en) * | 2015-01-22 | 2015-07-08 | 陈哲伟 | A kind of safety quantitative pipettor |
| US20170341071A1 (en) * | 2016-05-27 | 2017-11-30 | Miles Blackwood-Sewell | Burette |
| CN208260780U (en) * | 2018-04-10 | 2018-12-21 | 东海县太阳光新能源有限公司 | A kind of quartz buret |
| CN209014537U (en) * | 2018-10-08 | 2019-06-21 | 河南中烟工业有限责任公司 | A kind of reading auxiliary device of buret |
| CN210572169U (en) * | 2019-09-23 | 2020-05-19 | 黄娅娅 | Titration apparatus for high school chemistry experiments |
-
2021
- 2021-01-20 CN CN202110072192.7A patent/CN112387324B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201441923U (en) * | 2009-04-29 | 2010-04-28 | 陈爱华 | Burette stand with accurate reading device |
| US20130189167A1 (en) * | 2012-01-19 | 2013-07-25 | Don Kosterman | Micro Buret |
| US20140068954A1 (en) * | 2012-09-11 | 2014-03-13 | Turki Awwad Al-Dhafiri | Cylindrical ruler |
| CN204448045U (en) * | 2015-01-22 | 2015-07-08 | 陈哲伟 | A kind of safety quantitative pipettor |
| US20170341071A1 (en) * | 2016-05-27 | 2017-11-30 | Miles Blackwood-Sewell | Burette |
| CN208260780U (en) * | 2018-04-10 | 2018-12-21 | 东海县太阳光新能源有限公司 | A kind of quartz buret |
| CN209014537U (en) * | 2018-10-08 | 2019-06-21 | 河南中烟工业有限责任公司 | A kind of reading auxiliary device of buret |
| CN210572169U (en) * | 2019-09-23 | 2020-05-19 | 黄娅娅 | Titration apparatus for high school chemistry experiments |
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| Publication number | Publication date |
|---|---|
| CN112387324B (en) | 2021-05-28 |
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