CN206597549U - A kind of dual-purpose buret - Google Patents
A kind of dual-purpose buret Download PDFInfo
- Publication number
- CN206597549U CN206597549U CN201720247412.4U CN201720247412U CN206597549U CN 206597549 U CN206597549 U CN 206597549U CN 201720247412 U CN201720247412 U CN 201720247412U CN 206597549 U CN206597549 U CN 206597549U
- Authority
- CN
- China
- Prior art keywords
- pipe
- way pipe
- dual
- tubule
- way
- 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.)
- Active
Links
Abstract
The utility model provides a kind of dual-purpose buret, belongs to laboratory apparatus technical field.It solves the technical problems such as existing buret inconvenient for use, easy blocking and aging.This dual-purpose buret includes body, and one end of body has tubule, and the other end of body is connected with three-way pipe, and three-way pipe one end is connected and check valve one of the end provided with the one-way flow in the export-oriented three-way pipe of three-way pipe with body；The three-way pipe other end is connected with pump bowl；3rd end of three-way pipe has the check valve two of the one-way flow to outside three-way pipe from three-way pipe；Air inlet pipe is connected with the side wall of body, one end that air inlet pipe is connected with the junction of body close to body with three-way pipe, air inlet pipe is provided with valve switch.Rubber tube and glass piston are simplified to after tubule in the utility model, are not in the phenomenon that rubber tube and glass piston are blocked or corroded, cleaning also more facilitates；Only need to promote piston just can quickly be drawn to solution in body repeatedly when using, it is simple, convenient.
Description
Technical field
The utility model belongs to chemical experiment technical field of tools, is related to a kind of dual-purpose buret.
Background technology
Buret is an elongated tubular container, and one end has plug switch, measured thereon with graduation indication, is generally divided
For base buret and acid buret, the former is used to measure the alkaline solution for having corrosion function to glass tube；The latter is used to measure
Remove acidity, oxidisability and the colored solutions outside alkaline solution.Buret capacity is generally 1-100mL.Acid buret
Lower end be a glass piston；The lower end of base buret connects a cuvette with sharp mouth with rubber tube.Often at present
Base buret and acid buret, are that the solution in reagent bottle is poured into pipe from its upper end in use
It is smaller because upper end bore is consistent with tubular container diameter in shape container, often have solution and flow to showing outside buret
As.In addition, acid buret needs to smear vaseline often using glass cock, blocking is easily caused；When base buret is long
Between using easily there is aging phenomenon after sebific duct, coordinate bad with the bead in sebific duct, and cause leakage；When being stayed in rubber tube
When having bubble, bubble also is difficult to drain, and usually having bubble during titration use enters.
Chinese patent (publication number：CN201744362U；The day for announcing：A kind of thick suction fine droplets soda acid disclosed in 2011-02-16)
Buret, is made up of buret, air intake duct, fine tuning switch；Interface in band frosted in buret, and have at from about 3cm suitable for reading
Radius 0.1cm bifurcated pipe, remainder is similar to pipette, and range is 50ml；Bifurcated pipe is connected with fine tuning switch, and fine tuning is opened
Close to adjust for transfusion device and switch, its flexible pipe is connected for a long time with the bifurcated pipe of buret, and connecting place air-tightness is good；Air intake duct is by outer
Pipe, plunger disc and gear are constituted, and interface connection air intake duct in frosted, air intake duct is thicker.
Although acid base titration pipe in above-mentioned patent document is also but its entirety using by the way of the draw solution of lower end
Structure is not succinct enough, drives plunger disc motion action not enough to facilitate using structures such as gears.
The content of the invention
The utility model for existing technology exist above mentioned problem there is provided a kind of dual-purpose buret, the utility model
Technical problem to be solved is：How to avoid buret inject solution when leakage and buret lower end easy blocking, easily
Bubble is difficult to the phenomenon drained in aging and rubber hose, while improving the convenience that dual-purpose buret is used.
The purpose of this utility model can be realized by following technical proposal：
A kind of dual-purpose buret, including the body with scale marker, it is characterised in that one end of the body, which has, to be connected
Lead to the tubular body and extraneous tubule, the other end of the body is connected with three-way pipe, described three-way pipe one end with it is described
Body is connected and check valve one of the end provided with the one-way flow in the export-oriented three-way pipe of three-way pipe；The three-way pipe other end connects
The piston rod being connected provided with piston and with the piston is connected in pump bowl, the pump bowl；3rd end of the three-way pipe
With from three-way pipe to outside three-way pipe one-way flow check valve two；Air inlet pipe is also associated with the side wall of the body, institute
One end that air inlet pipe is connected with the junction of body close to the body with three-way pipe is stated, the air inlet pipe is opened provided with valve
Close.
Its operation principle is as follows：Three-way pipe is sealedly connected on body, pump bowl is sealedly connected on three-way pipe, used
When, the end of tubule is placed in the solution, is moved by manipulating piston rod band piston, to being evacuated in three-way pipe and body,
Negative pressure is formed, so that by solution extraction to body.Because the stroke of piston is limited, the negative pressure that the movement of piston single is produced is inhaled
The solution taken is also limited, at this moment can inversely promote piston rod and piston to be exhausted, the end being connected due to three-way pipe with body
Portion is connected with check valve one, and the air that the 3rd end of three-way pipe is provided with check valve two, therefore pump bowl can only be from check valve
Discharged in two, without being entered by check valve one in body, piston rod and piston are twitched again, it becomes possible to draw again molten
Liquid, is operated repeatedly, until reaching enough solution in body；Because air can not enter in body, under atmospheric pressure effect,
Solution in body will not also flow out from tubule, when needing to measure solution out of body, open the valve switch in air inlet pipe,
Air is entered in body, and the solution in body can just flow out from the outlet of tubule.Buret in the technical program is acid
The dual-purpose buret of alkali, eliminates the original rubber tube of base buret and bead and the original glass of acid buret is lived
Plug, solution, which is changed to sentence absorption mode from the tubule of body, to be entered in body, is not appeared in thus and is moved into buret
Carry the overflow phenomena occurred during solution；And rubber tube and glass piston are simplified to after tubule, be also not in rubber tube and
The phenomenon that glass piston is blocked or corroded, cleaning also more facilitates；Only need to promote piston just can be fast by solution repeatedly when using
Being drawn in body for speed, it is simple, convenient.
In above-mentioned dual-purpose buret, the three-way pipe includes the straight pipe and side siphunculus being connected, the side siphunculus
Perpendicular to straight pipe and the middle part of the straight pipe is connected to, the check valve two is located in the siphunculus of side.Such two of straight pipe
End difference connection pipe body and pump bowl, body, straight pipe and pump bowl are located on the same line, during draw solution, convenient
Operation, promoting the stress of piston rod can be directly delivered on the support for installing body, will not occur side and fall, singlehanded can grasp
Make, it is more convenient.
In above-mentioned dual-purpose buret, it is lower end that the body, which has canaliculate one end, and the other end is upper end, the pipe
Inwall of the body close to upper end is provided with beam ground, and the end of the straight pipe also is provided with the standard matched with the beam ground
Ground.So it is easy to the assembly and connection of body and three-way pipe, and ensure that sealing, and disassembly, cleaning are convenient.
In above-mentioned dual-purpose buret, the end of the pump bowl and the straight pipe is by setting ground to be tightly connected
Or thread seal connection.Connected or be threadedly coupled by ground and ensure that the assembling and dismounting of pump bowl and three-way pipe just
Victory.
In above-mentioned dual-purpose buret, alternatively, the end of the pump bowl and the straight pipe passes through
Flexible pipe is connected and the two ends of the flexible pipe are removably tightly connected with pump bowl and straight pipe respectively.Such position of pump bowl
The upper end of three-way pipe is not integrally fixed at, more flexibly, convenient operation.
In above-mentioned dual-purpose buret, the tubule is in pyramid type, and the internal diameter of the tubule is tapered under upper.
It so ensure that solution reagent precisely rapidly enters body or opened to flow out out of body after valve switch, can also close
After valve switch, body slightly rock the solution leakage that will not cause in body.
In above-mentioned dual-purpose buret, the junction of the tubule and the body has tapered guide surface.Such energy
The delay of its bottom solution is enough prevented, can also facilitate the solution in body quick from tubule outflow.
In above-mentioned dual-purpose buret, the air inlet pipe towards the body lower end bending and the valve switch with
The tubule flush.Solution flows out at tubule, by valve switch and tubule flush, experimenter while observation also just
In stretching out one's hand operation valve switch, to control the outflow of solution reagent.
In above-mentioned dual-purpose buret, the three-way pipe is made of transparent lucite.So it is easy to observation, side
Just clean.
In above-mentioned dual-purpose buret, one end of the piston rod and the piston Joint, the other end stretches out described
Pump bowl is outer and the end is fixedly provided with limited block.The structure is easy to operate piston rod.
Compared with prior art, the original rubber tube of base buret and bead and acid are eliminated in the utility model
The original glass piston of formula buret, solution, which is changed to sentence absorption mode from the tubule of body, to be entered in body, thus not
Appear in the overflow phenomena occurred during the transfer solution into buret；Rubber tube and glass piston are simplified to after tubule,
Be not in rubber tube and glass piston block or corrosion phenomenon, be also not in solution bubble be difficult to the phenomenon excluded；
Cleaning simultaneously also more facilitates；Only need to promote piston just can quickly be drawn to solution in body repeatedly when using, operate
Simply, conveniently.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of this dual-purpose buret in embodiment one.
Fig. 2 is the cross section structure diagram of this dual-purpose buret in embodiment one.
Fig. 3 is the dimensional structure diagram of this dual-purpose buret in embodiment two.
In figure, 1, body；1a, lower end；1b, upper end；2nd, tubule；3rd, three-way pipe；3a, straight pipe；3b, side siphunculus；4th, it is single
To valve one；5th, check valve two；6th, pump bowl；7th, piston；8th, piston rod；9th, air inlet pipe；10th, valve switch；11st, taper is oriented to
Face；12nd, limited block；13rd, flexible pipe.
Embodiment
The following is specific embodiment of the utility model and with reference to accompanying drawing, further is made to the technical solution of the utility model
Description, but the utility model is not limited to these embodiments.
Embodiment one
As depicted in figs. 1 and 2, this dual-purpose buret includes the body 1 with scale marker, and one end of body 1, which has, to be connected
The inside of siphunculus body 1 and extraneous tubule 2, tubule 2 is in pyramid type, and the internal diameter of tubule is tapered under upper, body 1 it is another
End is connected with three-way pipe 3, and three-way pipe 3 is made of transparent lucite；The one end of three-way pipe 3 is connected and the end with body 1
Check valve 1 provided with the one-way flow in the export-oriented three-way pipe 3 of three-way pipe 3；The other end of three-way pipe 3 is connected with pump bowl 6, pumping
The piston rod 8 being connected in cylinder 6 provided with piston 7 and with piston 7, one end and the Joint of piston 7 of piston rod 8, the other end stretches out
Pump bowl 6 is outer and the end is fixedly provided with limited block 12；3rd end of three-way pipe 3 has unidirectional to outside three-way pipe 3 from three-way pipe 3
The check valve 25 of circulation；It is also associated with air inlet pipe 9 on the side wall of body 1, the junction of air inlet pipe 9 and body 1 is close to body 1
The one end being connected with three-way pipe 3, air inlet pipe 9 is provided with valve switch 10.
Further, three-way pipe 3 includes the straight pipe 3a and side siphunculus 3b being connected, and side siphunculus 3b is perpendicular to straight pipe 3a
And straight pipe 3a middle part is connected to, check valve 25 is located in the siphunculus 3b of side.
Three-way pipe 3 is sealedly connected on body 1 in the present embodiment, pump bowl 6 is sealedly connected on three-way pipe 3, is used
When, the end of tubule 2 is placed in the solution, is moved by manipulating piston rod 8 with piston 7, in three-way pipe 3 and body 1
Pumping, forms negative pressure, so that by solution extraction to body 1.Because the stroke of piston 7 is limited, the movement of the single of piston 7 is produced
The solution that negative pressure is drawn is also limited, at this moment can inversely promote piston rod 8 and piston 7 to be exhausted, due to three-way pipe 3 and pipe
The end that body 1 is connected is connected with check valve 1, and the 3rd end of three-way pipe 3 is provided with the sky in check valve 25, therefore pump bowl 6
Gas can only be discharged from check valve 25, without being entered by check valve 1 in body 1, piston rod 8 be twitched again and living
Plug 7, it becomes possible to draw solution again, is operated repeatedly, until reaching enough solution in body 1；Because air can not enter pipe
In body 1, under atmospheric pressure effect, the solution in body 1 will not also flow out from tubule 2, when needs measure solution out of body 1
When, the valve switch 10 in air inlet pipe 9 is opened, air is entered in body 1, and the solution in body 1 just being capable of going out from tubule 2
Mouth outflow.Buret in the technical program is the dual-purpose buret of soda acid, eliminates the original rubber tube of base buret and glass
Glass pearl and the original glass piston 7 of acid buret, solution, which is changed to sentence absorption mode from the tubule 2 of body 1, enters pipe
In body 1, the overflow phenomena occurred during the transfer solution into buret is not appeared in thus；And by rubber tube and glass piston
7 are simplified to after tubule 2, are also not in the phenomenon that rubber tube and glass piston 7 are blocked or corroded, and cleaning also more facilitates；
Only need to promote piston 7 that just solution quickly can be drawn in body 1 repeatedly when using, it is simple, convenient.
There is the present embodiment middle tube body 1 one end of tubule 2 to be lower end 1a, and the other end is upper end 1b, and body 1 is close to upper end 1b
Inwall be provided with beam ground, straight pipe 3a end also is provided with the beam ground matched with the beam ground, pump bowl 6
By setting, ground is tightly connected or thread seal is connected with straight pipe 3a end；So body 1 and three-way pipe 3, pumping
The assembly and connection of cylinder 6 and three-way pipe 3 is convenient, and ensure that sealing, and disassembly, cleaning are also very convenient.
As depicted in figs. 1 and 2, the junction of tubule 2 and body 1 has tapered guide surface 11, can so prevent body 1
The delay of bottom solution, can also facilitate the solution in body 1 quickly to be flowed out from tubule 2；Air inlet pipe 9 is towards the lower end of body 1
1a is bent and valve switch 10 and the flush of tubule 2, when solution flows out at tubule 2, and experimenter's sight needs moment concern molten
The outflow situation of liquid, by valve switch 10 and the flush of tubule 2, experimenter also allows for stretching out one's hand while observation operates valve to open
10 are closed, to control the outflow of solution reagent.
Embodiment two
The present embodiment is roughly the same with embodiment one, and difference is, the present embodiment is taken out as further preferred improvement
Inflator 6 is connected with straight pipe 3a end by flexible pipe 13 and the two ends of flexible pipe 13 are removable with pump bowl 6 and straight pipe 3a respectively
That unloads is tightly connected.Specifically, pump bowl 6 is respectively provided with straight pipe 3a end and is connected mouth, and the two ends of flexible pipe 13 are set in
Connect on mouth, such pump bowl 6 can be placed below the position of three-way pipe 3；Convenient operation.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement or using similar to described specific embodiment
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although more having used 1, body herein；1a, lower end；1b, upper end；2nd, tubule；3rd, three-way pipe；3a, straight pipe；
3b, side siphunculus；4th, check valve one；5th, check valve two；6th, pump bowl；7th, piston；8th, piston rod；9th, air inlet pipe；10th, valve is opened
Close；11st, tapered guide surface；12nd, limited block；13rd, the term such as flexible pipe, but it is not precluded from the possibility using other terms.Use
These terms are used for the purpose of more easily describing and explaining essence of the present utility model；It is construed as any additional
Limitation all disagreed with the utility model spirit.
Claims (10)
1. a kind of dual-purpose buret, including the body (1) with scale marker, it is characterised in that one end tool of the body (1)
Have and connect the internal tubule (2) with the external world of the body (1), the other end of the body (1) is connected with three-way pipe (3), described
Three-way pipe (3) one end is connected with the body (1) and the end is provided with by export-oriented three-way pipe (3) the interior one-way flow of three-way pipe (3)
Check valve one (4)；Three-way pipe (3) other end is connected with pump bowl (6), in the pump bowl (6) provided with piston (7) with
And the piston rod (8) being connected with the piston (7)；3rd end of the three-way pipe (3) has from three-way pipe (3) to three-way pipe
(3) check valve two (5) of outer one-way flow；Air inlet pipe (9), the air inlet pipe (9) are also associated with the side wall of the body (1)
The one end being connected with the junction of body (1) close to the body (1) with three-way pipe (3), the air inlet pipe (9) is provided with valve
Switch (10).
2. dual-purpose buret according to claim 1, it is characterised in that the three-way pipe (3) is straight-through including what is be connected
(3a) and side siphunculus (3b) are managed, the side siphunculus (3b) is perpendicular to straight pipe (3a) and is connected in the straight pipe (3a)
Portion, the check valve two (5) is located in side siphunculus (3b).
3. dual-purpose buret according to claim 2, it is characterised in that the one end of the body (1) with tubule (2) is
Lower end (1a), the other end is upper end (1b), and inwall of the body (1) close to upper end (1b) is provided with beam ground, described straight
The end of siphunculus (3a) also is provided with the beam ground matched with the beam ground.
4. the dual-purpose buret according to Claims 2 or 3, it is characterised in that the pump bowl (6) and the straight pipe
By setting, ground is tightly connected or thread seal is connected for the end of (3a).
5. the dual-purpose buret according to Claims 2 or 3, it is characterised in that the pump bowl (6) and the straight pipe
The end of (3a) is connected by flexible pipe (13) and the two ends of the flexible pipe (13) are removable with pump bowl (6) and straight pipe (3a) respectively
That unloads is tightly connected.
6. the dual-purpose buret according to claim 1 or 2 or 3, it is characterised in that the tubule (2) is in pyramid type, described
The internal diameter of tubule (2) is tapered under upper.
7. dual-purpose buret according to claim 6, it is characterised in that the tubule (2) and the connection of the body (1)
Place has tapered guide surface (11).
8. the dual-purpose buret according to claim 1 or 2 or 3, it is characterised in that the air inlet pipe (9) is towards the pipe
Lower end (1a) bending of body (1) and the valve switch (10) and the tubule (2) flush.
9. the dual-purpose buret according to claim 1 or 2 or 3, it is characterised in that the three-way pipe (3) is using transparent
Lucite is made.
10. the dual-purpose buret according to claim 1 or 2 or 3, it is characterised in that one end of the piston rod (8) and institute
Piston (7) Joint is stated, the other end stretches out the pump bowl (6) outside and the end is fixedly provided with limited block (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720247412.4U CN206597549U (en) | 2017-03-14 | 2017-03-14 | A kind of dual-purpose buret |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720247412.4U CN206597549U (en) | 2017-03-14 | 2017-03-14 | A kind of dual-purpose buret |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206597549U true CN206597549U (en) | 2017-10-31 |
Family
ID=60146766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720247412.4U Active CN206597549U (en) | 2017-03-14 | 2017-03-14 | A kind of dual-purpose buret |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206597549U (en) |
Cited By (1)
| 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 |
-
2017
- 2017-03-14 CN CN201720247412.4U patent/CN206597549U/en active Active
Cited By (1)
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105730891A (en) | Liquid volume metering tool, container and method | |
| CN206597549U (en) | A kind of dual-purpose buret | |
| CN106824320A (en) | A kind of dual-purpose buret | |
| CN208440624U (en) | A kind of cell culture pipette | |
| CN203169188U (en) | Quantitative micro blood collection and transfer pipette | |
| CN208808526U (en) | A kind of division of endocrinology's device for sampling secretions | |
| CN201269831Y (en) | Collection sampling device for flowing solution | |
| CN205308360U (en) | Move device of getting solution | |
| CN205941073U (en) | Disposable ration blood sampling straw | |
| CN211636571U (en) | Pipette capable of accurately and quantitatively transferring liquid | |
| CN210487705U (en) | Universal titration apparatus capable of controlling dripping speed and droplet size | |
| CN210221583U (en) | Negative pressure liquid sampler | |
| CN204448045U (en) | A kind of safety quantitative pipettor | |
| CN203170352U (en) | Novel transfer pipette | |
| CN207823050U (en) | The novel liquid-transfering device of liquid is taken for draught cupboard | |
| CN209432525U (en) | A kind of fluid sampling device | |
| CN207823051U (en) | Novel negative pressure drawing-in type pipette | |
| CN207181085U (en) | Oil truck liquid sample collecting device and oil truck sampling system | |
| CN208968883U (en) | A kind of environmental monitoring sampling quantitative filling device | |
| CN205449210U (en) | Medical washing enzyme liquid counter | |
| CN203490148U (en) | Portable density measurement device | |
| CN206366395U (en) | A kind of disposable pipette for biology | |
| CN218641567U (en) | Storage device for segmented sampling of liquid samples | |
| CN2127172Y (en) | Snore piece liquid sampling unit | |
| CN2472232Y (en) | Burette for determining solution concentration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |