CN208568703U - A kind of combination intersection Dual-channel type buret - Google Patents
A kind of combination intersection Dual-channel type buret Download PDFInfo
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- CN208568703U CN208568703U CN201820462962.2U CN201820462962U CN208568703U CN 208568703 U CN208568703 U CN 208568703U CN 201820462962 U CN201820462962 U CN 201820462962U CN 208568703 U CN208568703 U CN 208568703U
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- piston
- buret
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- liquid passage
- central liquid
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Abstract
A kind of combination intersection Dual-channel type buret, piston element and water dropper including tubulose buret main body, control dropping liquid, the buret main body is the round tube with uniform scale, is provided with different inner diameters specification, lower end is with externally threaded fixed bore round tube, and upper end is set as horn mouth formula structure；The piston element is made of piston, piston core, rubber washer and fixture nut；The piston is cylindrical structure, it is internally provided with the piston groove to match with the piston core, and convex pipe convex pipe under is respectively arranged in the piston shell upper and lower surface, the convex inside pipe wall is provided with internal screw thread and connect with the round tube of the buret lower body part, is also provided with internal screw thread in convex pipe under described and connect with the water dropper upper end；The setting central liquid passage different there are two the bore for being mutually perpendicular to intersect, the respectively central liquid passage of larger caliber and more small-bore central liquid passage in the middle part of the piston core.
Description
Technical field
The utility model belongs to chemical analysis buret field, intersects Dual-channel type titration more particularly, to a kind of combination
Pipe.
Background technique
Capacity analysis is the important component of chemical analysis, has in fields such as chemistry, pharmacy, environment and is widely applied.
Buret is main device in capacity analysis, and conventional titration pipe is divided into acid and base buret, wherein acid buret by
Glass cock controls dropping liquid, and base buret is controlled by the emulsion tube with bead.Conventional titration pipe is in use process
In often there are some problems: (1) acid solution and lye cannot be general, and acid buret leakage and piston rotation easily occurs not
Flexibly, easily there is phenomena such as emulsion tube aging in alkali formula；(2) droplet size is difficult to control, and especially closes on small liquid when titration end-point
Drop control is difficult to realize；(3) titration capacity cannot flexibly be replaced according to titration demand, if titration capacity has large change,
Need to change corresponding buret.The presence of these problems causes conventional titration pipe not high there are accuracy in titration process and uses
The problems such as range is limited.
Utility model content
Realize the technical solution of above-mentioned purpose: a kind of combination intersection Dual-channel type buret, including tubulose buret main body,
Control the piston element and water dropper of dropping liquid.The buret main body is the round tube with uniform scale, is provided with different inner diameters rule
Lattice, lower end are with externally threaded fixed bore round tube, and further, the buret main body is glass material, and the upper end is set
It is set to horn mouth formula structure.
The piston element is made of piston, piston core, rubber washer and fixture nut, further, the work
It fills in core and uses polytetrafluoroethylplastic plastic material, piston uses acid and alkali-resistance transparent plastics material；The piston is cylinder
Body structure, be internally provided with the piston core match piston groove, and on it lower surface be respectively arranged with convex pipe and
Under convex pipe, the convex inside pipe wall is provided with internal screw thread and connect with the round tube of buret lower body part, under convex inside pipe wall be also arranged
There is internal screw thread to connect with water dropper upper end.
The piston core is long truncated cone-shaped structure, and both ends diameter is different, and wherein larger diameter one end is connected with knob, smaller straight
One section of cylindrical structure is extended in diameter one end, is provided with external screw thread on the cylindrical structure, when the piston core is inserted into the work
When beyond the Great Wall in the piston groove of shell, the prominent piston of the cylindrical structure, the rubber washer is socketed in the cylinder
In body structure, the fixture nut is screwed onto rubber washer outer cylinder structure.
The setting central liquid passage different there are two the bore for being mutually perpendicular to intersect in the middle part of the piston core.
The central liquid flow passage of water dropper setting different inner diameters, the upper end are provided with the external screw thread of fixed diameter, can be with
The internal screw thread connection of convex pipe under piston, further, water dropper selects glass material.
Further, the knob of the piston core is cylinder, the center of larger caliber in axial direction and piston core
Fluid passage is parallel, vertical with central liquid passage more small-bore in piston core, clearly selects in titration accordingly larger
The central liquid passage of bore or more small-bore central liquid passage.
It further, can be according to titration since the buret main body and water dropper are respectively designed to different inner diameters specification
Capacity requirement replaces buret main body and water dropper at any time.
The utility model has the advantages that
The utility model structure is simple and convenient to operate, and can both realize that soda acid is general, and overcome in titration process common asks
Topic, and the accuracy and precision of titration can be improved, while also can be suitably used for the titration operation of different capabilities requirement, to widen
Its scope of application.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the utility model piston core structural schematic diagram.
Drawing in side sectional elevation in the middle part of Fig. 3 the utility model piston core.
In figure, 1 buret main body, 2 pistons, 3 convex pipes, convex pipe under 4,5 piston cores, the central liquid of 6 larger calibers
Body channel, 7 more small-bore central liquid passages, 8 rubber washers, 9 fixture nuts, 10 water droppers
Specific embodiment
It is further described with reference to the accompanying drawing:
As shown in Figure 1, it includes buret main body 1, piston portion that a kind of combination of the utility model, which intersects Dual-channel type buret,
Part, water dropper 10.The buret main body 1 is the round tube with uniform scale, is provided with different inner diameters specification, and lower end is with outer
The fixation bore round tube of screw thread, it is preferable that the buret main body 1 is glass material, and the upper end is set as horn mouth formula structure
Convenient for toppling over titrating solution into buret, especially with smaller internal diameter buret main body 1 when.
The piston element is made of piston 2, piston core 5, rubber washer 8 and fixture nut 9, it is preferable that described
Piston core 5 uses polytetrafluoroethylplastic plastic material, and such material has corrosion resistance and high-lubricity, can both realize acid solution lye
It is general, it can also be convenient for the sealing and rotation between piston and shell；Preferably, the piston 2 uses transparent plastics material,
Facilitate observation piston in whether entrapped air pockets；The piston 2 is cylindrical structure, is internally provided with and the piston core
5 piston grooves to match, and on it lower surface be respectively arranged with convex pipe 3 and under convex pipe 4, convex 3 inner wall of pipe is provided with
Internal screw thread is connect with the external screw thread of the round tube of 1 lower part of buret main body, under described convex 4 inner wall of pipe be also provided with internal screw thread with
The external screw thread of 10 upper end of water dropper connects.
The piston core 5 is long truncated cone-shaped structure, and both ends diameter is different, and wherein larger diameter one end is connected with knob, smaller
One section of cylindrical structure is extended in one end of diameter, is provided with external screw thread on the cylindrical structure, when the piston core 5 is inserted into institute
When stating in the piston groove of piston 2, the prominent piston 2 of the cylindrical structure, the rubber washer 8 is socketed in institute
It states on cylindrical structure, the fixture nut 9 is screwed onto rubber washer outer cylinder structure.
The central liquid flow passage of different inner diameters is arranged in the water dropper 10, and the upper end is provided with the external screw thread of radii fixus, can
The internal screw thread of convex pipe 4 is connect under described on piston 2, it is preferable that the water dropper 10 selects glass material.
The central liquid different there are two the bore for being mutually perpendicular to intersect is set as shown in attached drawing 2,3, in the middle part of the piston core 5
Body through-hole, the respectively central liquid passage 6 and more small-bore central liquid passage 7 of larger caliber.
The buret main body 1 and water dropper 10 of appropriate size can be selected when use as needed, the two passes through respectively
The convex pipe 3,4 of about 2 piston is connected with piston element, and 5 smaller diameter end of piston core passes through the rubber washer 8
It is fixed with fixture nut 9.Then titrating solution is added by the 1 upper end horn mouth of buret main body.By described in rotation before titration
It is described that knob is directed at the central liquid passage 6 of the larger caliber in the piston core 5 or more small-bore central liquid passage 7
Buret main body 1 and the water dropper 10, so that the central liquid passage 6 and more small-bore center liquid of the larger caliber are logical
Road 7 and the water dropper 10 are each filled with solution.It may be selected when titration process just starts in the piston core 5 in larger caliber
Heart fluid passage 6 carries out dropping liquid, when close to titration end-point, for avoid dripping or half-and-half drop operation it is not easy to control, change and be
The more small-bore central liquid passage 7 carries out dropping liquid, it is convenient to smaller droplet is released, to realize accurate titration.
The buret is controlled by the reasonable selection of the different central liquid passage of two bores in the piston core 5
Droplet size dripped or the problems such as half drop operation is not easy to control to can effectively avoid, and made to titrate work more convenient and accurate；Its
The secondary piston core 5 uses polytetrafluoroethylene (PTFE) material, keeps acid solution and lye applicable, avoids acid solution and lye needs to separate
Use the trouble of buret；Finally, the buret main body 1 and 10 internal diameter of water dropper can be replaced flexibly, buret has undoubtedly been widened
Use scope, save the cost.
Claims (4)
1. a kind of combination intersects Dual-channel type buret, including tubulose buret main body, water dropper, which is characterized in that the titration
Pipe main body is the round tube with uniform scale, is provided with different inner diameters specification, lower end be with externally threaded fixed bore round tube,
Upper end is set as horn mouth formula structure；
The buret further includes the piston element for controlling dropping liquid, and the piston element is by piston, piston core, rubber washer
It is formed with fixture nut；
The piston is cylindrical structure, is internally provided with the piston groove to match with the piston core, and in the work
Shell upper and lower surface is respectively arranged with convex pipe convex pipe, convex inside pipe wall under and is provided with internal screw thread and the buret beyond the Great Wall
The round tube of lower body part connects, and is also provided with internal screw thread in convex pipe under described and connect with the water dropper upper end；
The piston core is long truncated cone-shaped structure, and both ends diameter is different, and wherein larger diameter one end is connected with knob, small diameter one
One section of cylindrical structure is extended at end, is provided with external screw thread on the cylindrical structure, when the piston core is inserted into the piston
When in the piston groove of shell, the prominent piston of the cylindrical structure, the rubber washer is socketed in the cylindrical body
In structure, the fixture nut is screwed onto rubber washer outer cylinder structure；
The setting central liquid passage different there are two the bore for being mutually perpendicular to intersect, respectively large mouth in the middle part of the piston core
The central liquid passage of diameter and more small-bore central liquid passage.
2. a kind of combination according to claim 1 intersects Dual-channel type buret, wherein the knob of the piston core is circle
Cylindricality, axial direction is parallel with the central liquid passage of larger caliber in the middle part of piston core, more small-bore with piston core middle part
Central liquid passage is vertical, clearly selected in titration accordingly larger caliber central liquid passage or it is more small-bore in
Heart fluid passage.
3. a kind of combination according to claim 1 intersects Dual-channel type buret, wherein the buret main body and water dropper
It is respectively designed to different inner diameters specification, buret main body and water dropper can be replaced at any time according to titration capacity requirement.
4. a kind of combination as claimed in any of claims 1 to 3 intersects Dual-channel type buret, wherein the work
It fills in core and uses polytetrafluoroethylene (PTFE) material, piston uses acid and alkali-resistance transparent plastics material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820462962.2U CN208568703U (en) | 2018-04-03 | 2018-04-03 | A kind of combination intersection Dual-channel type buret |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820462962.2U CN208568703U (en) | 2018-04-03 | 2018-04-03 | A kind of combination intersection Dual-channel type buret |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208568703U true CN208568703U (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820462962.2U Active CN208568703U (en) | 2018-04-03 | 2018-04-03 | A kind of combination intersection Dual-channel type buret |
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| Country | Link |
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Cited By (1)
| 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 |
-
2018
- 2018-04-03 CN CN201820462962.2U patent/CN208568703U/en active Active
Cited By (2)
| 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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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191217 Address after: Han Shi Lu 430415 Hubei province Wuhan city Xinzhou District of Yangluo Economic Development Zone No. 1 Co-patentee after: Hubei Junjiang Green Development Co., Ltd Patentee after: Wuhan Bioengineering Institute Address before: Han Shi Lu 430415 Hubei province Wuhan city Xinzhou District of Yangluo Economic Development Zone No. 1 Patentee before: Wuhan Bioengineering Institute |