CN207287477U - The structure of suction pipe - Google Patents
The structure of suction pipe Download PDFInfo
- Publication number
- CN207287477U CN207287477U CN201721200547.1U CN201721200547U CN207287477U CN 207287477 U CN207287477 U CN 207287477U CN 201721200547 U CN201721200547 U CN 201721200547U CN 207287477 U CN207287477 U CN 207287477U
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- Prior art keywords
- socket
- suction pipe
- absorption
- absorption heads
- tube body
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Abstract
The utility model is that suction pipe is connected to draw with liquid relief connector by separable mode or discharging liquid on a kind of structure of suction pipe, including：Tube body, tube body sequentially includes socket part, holding part and connecting portion by a socket end, socket chamber is equipped with socket part, it is provided with socket-connecting with liquid relief connector, accommodating cavity is equipped with holding part, to accommodating drawn liquid, and connection road is then equipped with connecting portion, socket chamber, accommodating cavity are interconnected with being connected, and tube body is equipped with fin at the outer rim that socket part is connected with holding part；And absorption heads, absorption heads are internally provided with absorption road, one end of absorption heads is connected with connecting portion, absorption road is connected with the inside of tube body, and absorption heads are with made by the material different from tube body, and the young's moduluses of absorption heads is between 5 between 250GPa.Whereby, absorption heads obtain puncture seal layer, and suction pipe must be occurred in the absorption of solution in sealing container, the situation to avoid absorption heads deformation.
Description
Technical field
The utility model is installed in micropipettor or biochemical reaction device on a kind of suction pipe especially with respect to one kind
In liquid relief connector, and to draw or discharge the structure of the suction pipe of solution.
Background technology
In the experimentation of general raw doctor, chemistry or Sample, the addition of liquid solution is typically to utilize pipettor
To reach, after drawing the solution of predetermined by its caused air pressure difference, pipettor is moved into another container or examination
In agent, air thrust is recycled, the solution drawn is discharged, achievees the purpose that to dispense fixed volume solution.
Pipettor has traditional ball, manual air pressure differential pipettor or electric air pressure differential pipettor.Traditional rubber
Glueballs pipettor connects a long tube type suction pipe, commonly used in drawing dispensing during several milliliters (ml) extremely tens of milliliters of solution, and
Air pressure difference pipettor also has a type for the dispensing design of several milliliters of solution, but more typically person be for several microlitres (μ l) extremely
The micropipettor (micropipette, also known as micro dispenser) compared with micro-scale volume design is waited between hundreds of microlitres.Due to micro
Liquor capacity operated by pipettor is very small, so the accuracy of liquor capacity is put in its suction, determines the micropipettor
It is good and bad.
When operating micropipettor, a suction pipe (Tip, or dropper point, suction pipe must be installed on its liquid relief connector first
Head, pipette tip), after making micropipettor draw solution, allow the solution is temporarily accommodating to be carried in the suction pipe, it is another that must add
When in one reagent or container, then micropipettor is set to push the solution discharged in the suction pipe with air.To make to be drawn every time
Solution between will not produce the contamination of mixing, before each solution or sample is operated, all can first pull out used suction
Pipe is taken, and replaces with new suction pipe, therefore suction pipe used in those micropipettors often exists in the form of discardable.
General operation micropipettor mainly utilizes polypropylene (Polypropylene, PP) material when draw solution
Suction pipe, however, polyacrylic young's modulus is only about 1.14~1.55GPa, when what is contained for drawing sealing container
During solution, its intensity is usually not easy or is not enough to pierce through its sealant and be deformed, and the biochemistry in many automations is anti-
Answer in device, such as：Automatic nucleic acid extraction device, auto-polymerization enzyme chain reaction (Polymerase Chain Reaction,
Abbreviation PCR) device, nucleic acid sequence unit, immuning hybridization reaction unit etc., its used set group is mostly by required reaction
Solution is sealed in the container of specific standard, therefore, if when the device installs PP suction pipes common with general market, is had no
Method makes the device smoothly carry out solution absorption, thus influences the progress of reaction, more influences the accuracy of result of the test.
In addition, during suction pipe is socketed, often has and install the problem of improper caused draw solution volume is inaccurate.It is first
First, it is more only corresponding slightly in the tube body of tapered tube shape between the liquid relief connector of general micropipettor and the suction pipe installed
With being socketed chamber, an extruding force need to be usually imposed after suction pipe is put on liquid relief connector, using the chucking power of close-fitting, liquid relief is connect
Head is tightly inserted in the socket chamber of suction pipe, the junction of liquid relief connector and suction pipe is formed sealing state.If during connection
Force deficiency is unequal, and suction pipe can not be sealedly attached on liquid relief connector, then meeting during micropipettor draw solution
Because gas leakage, and enough predetermined liquor capacities can not be drawn, cause the error of reaction solution volume, and lose reaction result
Standard, if this situation occurs when detecting or being quantitative, experimental result will produce gross error or mistake.On the other hand, if suction pipe
Can not be firm be connected on liquid relief connector, then also often occur the situation that suction pipe drops, if wherein having drawn and having carried solution,
More the solution can be caused to spread out, cause danger or occur with the situation that other solution surprisingly mix.
Utility model content
It is respectively the suction made by two kinds of materials that one of the purpose of this utility model, which is to provide a kind of absorption heads and tube body,
Take the structure of pipe, yielding characteristic do not allowed by absorption heads, make the suction pipe can be applied to suction openings closing or seal with
The solution that aluminium flake container is contained.
A time purpose of the utility model is that providing one kind can allow suction pipe to be conveniently placed on absorption pipe support and hold
The structure of the suction pipe of pipe is easily moved back, by the setting of positioning part (such as fin), avoids suction pipe from being surprisingly caught in storing when placing
Hole, and different Tui Guan mechanisms are can be applied to, and easily advantageously can depart from suction pipe by liquid relief connector.
A time purpose of the utility model is that provide one kind closely and easily can be connected to micro shifting by suction pipe
The structure of suction pipe on the liquid relief connector of liquid device or automatic pipettor, by the clip and liquid relief connector of ring groove with drawing
Close-fitting connection between pipe sleeve socket part, can allow suction pipe firmly and advantageously be socketed on liquid relief connector, without imposing compared with high thrust
It can be made to be tightly sleeved in precalculated position and liquid relief connector, and easily can also be inhaled this after clip region is pushed away when moving back pipe
Take pipe to remove, be significantly increased and use upper convenience.
In order to reach foregoing purpose, the utility model provides a kind of structure of suction pipe, and the suction pipe is by separable
Mode is connected with a liquid relief connector and to draw or discharge a liquid, including：One tube body, the tube body by a socket end sequentially
Including a socket part, a holding part and a connecting portion, a socket chamber is equipped with the socket part, is provided with being nested with the liquid relief connector
Connect, an accommodating cavity be equipped with the holding part, to accommodating liquid drawn, and a connection road is then equipped with the connecting portion,
The socket chamber, the accommodating cavity are connected with this and are interconnected, wherein, which is connected outer in the socket part with the holding part
A positioning part can be equipped with edge；And absorption heads, the absorption heads are internally provided with an absorption road, one end of the absorption heads and the company
Socket part is connected, and the absorption road is connected with the inside of the tube body, and the absorption heads are made with the material different from the tube body
Into, the absorption heads young's modulus between 5 between 250GPa.
In an embodiment of the utility model, the structure of the suction pipe, the wherein positioning part can be a fin, should
The outside diameter that fin outer rim is formed is more than the holding part, the connecting portion and the outside diameter of the absorption heads.
In an embodiment of the utility model, the structure of the suction pipe, the socket wherein set by the socket part
Tube wall inner edge is provided with a ring groove.
In an embodiment of the utility model, one end of the structure of the suction pipe, the wherein absorption heads plugs company
It is connected in the connection road.
In an embodiment of the utility model, the structure of the suction pipe, the socket wherein set by the socket part
Tube wall its inner rim diameter is gradually reduced from the socket end toward the holding part direction, so that the liquid relief connector close-fitting is clamped.
In an embodiment of the utility model, the structure of the suction pipe, the inner edge of the wherein socket tube wall is gradual
An abutting part is contracted to, which more reduces and form a segment difference with the socket tube wall.
In an embodiment of the utility model, the structure of the suction pipe, the wherein holding part are in close to the connection
The one end in portion forms an inclined tube portion, the accumulation chamber formed in the inclined tube portion, the accumulation chamber it is interior directly go to the connecting portion direction by
One inverted cone shape structure of tapered small formation.
In an embodiment of the utility model, the structure of the suction pipe, the wherein accumulation chamber form inverted cone shape
The one end of the bottom of structure just with the absorption road of the absorption heads is connected.
In an embodiment of the utility model, the structure of the suction pipe, the wherein accommodating cavity are in close to the socket
A filtration members are equiped with portion.
In an embodiment of the utility model, the outside diameter of the structure of the suction pipe, the wherein filtration members is more than should
The inner edge diameter of accommodating cavity, sets wherein so that the filtration members must fill in.
In an embodiment of the utility model, the structure of the suction pipe, the wherein fin are set in a manner of ring is set
It is placed in the tube body outer rim.
By the structure of suction pipe provided by the utility model, should can be sealed in advance in many to avoid polluting
Container in solution absorption, and can increase suction pipe by the setting of fin and put with moving back the operation ease of pipe.
The embodiment of the utility model described further below, following cited embodiments are to illustrate this reality
With new, it is not intended to limit the scope of the utility model, it is any to be familiar with this those skilled in the art, do not departing from the spirit and model of the present invention
In enclosing, when can do it is a little change and retouch, therefore the scope of protection of the utility model is when regarding appended claims institute circle
Subject to the person of determining.
Brief description of the drawings
Fig. 1 is the schematic perspective view of the utility model suction pipe embodiment；
Fig. 2 is the schematic cross-sectional view of the utility model suction pipe embodiment；
Fig. 3 is schematic cross-sectional view when the utility model suction pipe embodiment is connected with liquid relief connector；
Fig. 4 is the schematic cross-sectional view of another suction pipe embodiment of the utility model；
Fig. 5 is schematic cross-sectional view when another suction pipe embodiment of the utility model is connected with liquid relief connector；
Fig. 6 is the schematic cross-sectional view of the utility model suction pipe embodiment installing filtration members；
Fig. 7 is the enlarged section schematic diagram of the fin of the utility model suction pipe embodiment.
Description of reference numerals：
100- tube bodies；110- holding parts；111- houses tube wall；112- accommodating cavities；1121- accumulation chambers；113- inclined tubes portion；
120- connecting portions；121- engages tube wall；122- connections road；130- socket parts；1301- socket ends；131- is socketed tube wall；132- covers
Connect chamber；133- abutting parts；134- positioning parts/fin；1341- lower holding parts；135- ring grooves；1342- upper holding parts；200- is drawn
Head；201- draws road；300- filtration members；A, B- liquid reliefs connector；A1- liquid reliefs end；B1- card convex blocks.
Embodiment
Referring to Fig. 1, the figure is the schematic perspective view of the utility model suction pipe embodiment.The utility model embodiment
The structure of suction pipe, including a tube body 100 and an absorption heads 200, absorption heads 200 are connected to one end of tube body 10, to draw
Or discharge solution, the outer rim of tube body 100 is simultaneously equipped with one positioning part/fin 134, to put the suction pipe or move back pipe.
Referring to Fig. 2, the figure is the schematic cross-sectional view of the utility model suction pipe embodiment.Tube body 100 is by socket end
1301 sequentially include：Socket part 130, holding part 110 and connecting portion 120.Socket part 130, holding part 110 and connecting portion 120 3
It is interconnected inside person.
Socket part 130, it may include socket tube wall 131, surrounded socket chamber 132, the Yi Jitao formed by socket tube wall 131
The abutting part 133 that adapter wall 131 is formed relative to 1301 other end of socket end.During to enable to socket-connect with liquid relief connector in the future
Close-fitting connects, and socket 131 its inner rim diameter of tube wall can be gradually reduced from the socket end 1301 toward 110 direction of holding part.Socket pipe
131 inner edge diameter of wall can be gradually reduced to the abutting part 133.In the present embodiment, its inner rim diameter contracts rapidly abutting part 133
It is small, and a segment difference is formed with previous socket tube wall 131, this right structure is not provided with particularly limiting, 133 inner edge of abutting part
Diameter also can directly reduce, and the abutting part 133 is formed single order scalariform segment difference (not shown), and be different from the present embodiment institute shape
Into inclined-plane segment difference.
Holding part 110, then include accommodating tube wall 111 and surround the accommodating cavity 112 formed by accommodating tube wall 111.Hold
It can be the identical tubular of upper and lower side to put 111 its inner rim diameter of tube wall, also can be such as the present embodiment, and its inner rim diameter is toward connecting portion 120
The diminishing structure in direction, the accommodating cavity 112 is to accommodating drawn solution.During to enable accommodating solution to discharge smoothly
Flowing out and be not easy to remain, accommodating tube wall 111 can form an inclined tube portion 113 in one end close to connecting portion 120, and in the inclined tube portion
Form an accumulation chambers 1121 in 113, and the accumulation chamber 1121 in directly go to 120 direction of connecting portion and be gradually reduced to form a back taper
Shape structure.Whereby, it is larger to be moved to gradient in discharge process along the slightly inclined surface of accommodating tube wall 111 for solution
113 surface of inclined tube portion, thus solution can be reduced be stained with and stick on tube wall, reduce the error of discharge liquor capacity.
Connecting portion 120, it includes engaging tube wall 121, and surrounds formed connection road 122 by the engagement tube wall 121,
Connect road 122 and be interconnected with accommodating cavity 112, socket chamber 132.
Absorption heads 200, are internally provided with an absorption road 201, and in the present embodiment, one end of the absorption heads 200 is extended through
The connection road 122 simultaneously connects wherein, the bottom that 201 one end of absorption road just forms inverted cone shape structure with accumulation chamber 1121 is connected
It is logical.The connection mode of absorption heads 200 is not limited to this, it can also coat the engagement tube wall 121 and be connected to its outer rim, inhale at this time
It is connected by way of 201 with being connected 122.
Absorption heads 200 are as made by two kinds of unlike materials with tube body 100 in the present embodiment, and absorption heads 200 have
Less deformation characteristic, so that when the solution in the container with protective layer sealing is drawn, can pierce through curved without producing easily
Song deformation.Its young's modulus of material used in absorption heads 200 can be preferably young's modulus about between 5 between 250GPa
The stainless steel of 200GPa, but be not limited thereto.
When the material using stainless steel as absorption heads 200, and during using polypropylene as the material of tube body 100, using penetrating
Go out the modes such as shaping, die perfusion, form the polypropylene pipe body 100 of connection in one end of stainless steel absorption heads 200, it also can be saturating
The adhesive agent that silica gel glue etc. is not likely to produce chemical reaction is crossed, stainless steel absorption heads 200 are attached on polypropylene pipe body 100.
Please refer to Fig. 2 and Fig. 7, Fig. 7 is the enlarged section schematic diagram of the fin of the utility model suction pipe embodiment.
In the present embodiment, to achieve the purpose that suction pipe can facilitate storing with moving back pipe easily, tube body 100 is in socket part 130 with housing
Positioning part can be used as at the outer rim that portion 110 is connected equipped with a fin 134.The outside diameter that 134 outer rim of fin is formed is more than accommodating
Portion 110, connecting portion 120 and the outside diameter of absorption heads 200, therefore suction pipe is being put when pipe support is drawn, can be by whole suction pipe
Smoothly insertion bore is less than in the hole (not shown) of 134 outer rim of fin, and by prominent 134 structure of fin, by under it
Support 1341 is acted against on the upper surface by suction pipe frame aperture hole, and is avoided because making the suction pipe stretch through entrance without this Sustain structure
The problem of hole is without being drawn out easily.In addition, the upper holding part 1342 that relatively another surface of the fin 134 is formed, then can make
The stress point pushed during to move back pipe, and obtain and pushed easily by the upper holding part 1342, suction pipe is departed from into liquid relief connector, completes to move back
The step of pipe.
Referring to Fig. 3, the schematic cross-sectional view that the figure is the utility model suction pipe embodiment when being connected with liquid relief connector.With
When liquid relief connector A is connected, suction pipe is entangled into liquid relief connector A by socket end 1301 to be socketed chamber 132, due to suction pipe
Socket part 130 have deformable characteristic, slightly exert oneself in the case of, liquid relief connector A can close-fitting be connected to socket chamber 132
In, and the setting of abutting part 133 can be used as a position limiting structure, make the liquid relief end A1 of liquid relief connector A can be blocked by the abutting part 133
Support, avoid during socket overexertion from liquid relief connector A is stretched into socket chamber 132 too deep, cause leakproofness deficiency on the contrary and move back pipe
The problem of being not easy.
Refer to Fig. 4 and Fig. 5, two figure be another suction pipe embodiment of the utility model schematic cross-sectional view and its with
Schematic cross-sectional view when liquid relief connector connects.To make the connection of suction pipe and liquid relief connector more convenient, relay is covered without consideration
The size in road, can be further in forming a ring groove 135 on the inner edge of the socket tube wall 131, and liquid relief connector B is provided with phase
Corresponding and the card convex block B1 that can mutually be clamped, card convex block B1, which can be ring-type, protrudes structure or boss structure, but not as
Limit.Snap-in structure whereby, when being socketed on suction pipe on liquid relief connector B, can feel whether suction pipe has been clamped and has stopped applying
Power, not only can control the tightness degree of suction pipe socket, can more be socketed rapidly, and have the advantages that convenient installing.
Referring to Fig. 6, the figure is the schematic cross-sectional view of the utility model suction pipe embodiment installing filtration members.To avoid inhaling
The solution or its steam that pipe is drawn touch liquid relief connector, cause the pollution between sample, in the accommodating cavity 112 close to socket part
A filtration members 300 can be equipped with by being opened at 130.The outside diameter of filtration members 300 may be slightly larger than the inner edge diameter of the accommodating cavity 112, so that should
Filtration members 300, which must fill in, to be set wherein.In addition, also can be in one caulking groove (not shown) of setting in the accommodating cavity 112 at this, and will filter
Part 300 is clamped thereon, and therefore, the installing of filtration members 300 is not provided with particularly limiting.Filtration members 300 have the material of hole, dress
Pipettor is set to remain to that solution is drawn or discharged by air pressure after if, but it necessarily be formed solution barrier, therefore its hole is big
It is small be about do not influence inhale bleed off pressure between 20~50 μm of power.The material of filtration members 300 is also not provided with particularly limiting, it can be
Chemical fibre with said physical characteristic is formed.
By the structure of suction pipe provided by the utility model, appearance can be sealed in Ying Yu such as automatic biochemical reaction units
The absorption of solution in device, reduces the probability that pollution occurs, and can increase behaviour of the suction pipe storing with moving back pipe by the setting of fin
Make convenience.
Claims (11)
1. a kind of structure of suction pipe, it is characterised in that be connected by separable mode with a liquid relief connector and to draw
Or one liquid of discharge, including：
One tube body, the tube body sequentially include a socket part, a holding part and a connecting portion by a socket end, are equipped with the socket part
One socket chamber, is provided with socket-connecting with the liquid relief connector, an accommodating cavity is equipped with the holding part, to accommodating liquid drawn
Body, and a connection road is then equipped with the connecting portion, the socket chamber, the accommodating cavity are connected with this and are interconnected, wherein, the tube body
A positioning part is equipped with the outer rim that the socket part is connected with the holding part；And
One absorption heads, the absorption heads are internally provided with an absorption road, and one end of the absorption heads is connected with the connecting portion, makes the absorption
Road is connected with the inside of the tube body, and the absorption heads are with made by the material different from the tube body, the Young system of the absorption heads
Number is between 5 between 250GPa.
2. the structure of suction pipe according to claim 1, it is characterised in that the positioning part is a fin, the fin outer rim
The outside diameter formed is more than the holding part, the connecting portion and the outside diameter of the absorption heads.
3. the structure of suction pipe according to claim 1 or 2, it is characterised in that the socket pipe wall set by the socket part
Inner edge is provided with a ring groove.
4. the structure of suction pipe according to claim 1 or 2, it is characterised in that one end of the absorption heads, which plugs, to be connected to
In the connection road.
5. the structure of suction pipe according to claim 1 or 2, it is characterised in that the socket pipe wall set by the socket part
Its inner rim diameter is gradually reduced from the socket end toward the holding part direction, so that the liquid relief connector close-fitting is clamped.
6. the structure of suction pipe according to claim 5, it is characterised in that the inner edge of the socket tube wall is gradually reduced to one
Abutting part, the abutting part inner edge diameter more reduce and form a segment difference with the socket tube wall.
7. the structure of suction pipe according to claim 1 or 2, it is characterised in that the holding part is in close to the connecting portion
One end forms an inclined tube portion, the accumulation chamber formed in the inclined tube portion, and the interior of the accumulation chamber directly goes to the connecting portion direction and gradually contract
One inverted cone shape structure of small formation.
8. the structure of suction pipe according to claim 7, it is characterised in that the accumulation chamber forms the bottom of inverted cone shape structure
The one end of portion just with the absorption road of the absorption heads is connected.
9. the structure of suction pipe according to claim 1 or 2, it is characterised in that the accommodating cavity is in close at the socket part
It is equiped with a filtration members.
10. the structure of suction pipe according to claim 9, it is characterised in that the outside diameter of the filtration members is more than the accommodating cavity
Inner edge diameter set wherein so that the filtration members must fill in.
11. the structure of suction pipe according to claim 2, it is characterised in that the fin is to be arranged at this in a manner of ring is set
Tube body outer rim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721200547.1U CN207287477U (en) | 2017-09-19 | 2017-09-19 | The structure of suction pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721200547.1U CN207287477U (en) | 2017-09-19 | 2017-09-19 | The structure of suction pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207287477U true CN207287477U (en) | 2018-05-01 |
Family
ID=62442672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721200547.1U Active CN207287477U (en) | 2017-09-19 | 2017-09-19 | The structure of suction pipe |
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| Country | Link |
|---|---|
| CN (1) | CN207287477U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109529963A (en) * | 2017-09-21 | 2019-03-29 | 纬创资通股份有限公司 | Automatic liquid transfer equipment and liquid transfer module thereof |
-
2017
- 2017-09-19 CN CN201721200547.1U patent/CN207287477U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109529963A (en) * | 2017-09-21 | 2019-03-29 | 纬创资通股份有限公司 | Automatic liquid transfer equipment and liquid transfer module thereof |
| CN109529963B (en) * | 2017-09-21 | 2021-03-16 | 纬创资通股份有限公司 | Automatic liquid transfer equipment and liquid transfer module thereof |
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