CN206688719U - A kind of pipettor gun head - Google Patents
A kind of pipettor gun head Download PDFInfo
- Publication number
- CN206688719U CN206688719U CN201621461194.6U CN201621461194U CN206688719U CN 206688719 U CN206688719 U CN 206688719U CN 201621461194 U CN201621461194 U CN 201621461194U CN 206688719 U CN206688719 U CN 206688719U
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- CN
- China
- Prior art keywords
- liquid
- liquid relief
- relief portion
- gun head
- pipettor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of pipettor gun head, this kind of pipettor gun head, when carrying out imbibition operation, the upper port of feed tube automatically opens up under the pressure of liquid, liquid is got enter into pipette tips, and after imbibition terminates, feed tube is closed automatically, it can so prevent the situation of liquid leakage occur during pipettor is shifted, be advantageous to keep the environmental sanitation pipettor of fast and easy transfer simultaneously；And when carrying out discharge opeing operation, pipette tips internal liquid squeezes out liquid pipe, automatically opens up it, can smooth discharge opeing.
Description
Technical field
Experiment consumptive material field is the utility model is related to, more specifically, it relates to a kind of pipettor gun head.
Background technology
Pipettor, pipettor are often used during biochemical test, the liquid of medical test or semi liquid state sample extraction
Equipped with pipette tips.Pipettor realizes the operation of suction liquid and discharge liquid using the principle of draught head.Suck pipettor
Liquid makes to form negative pressure in pipette tips, in the presence of pipette tips inner and outer air pressure difference, outside liquid is inhaled into, it is necessary to operate pipettor
In pipette tips；And to make pipettor discharge liquid, it is necessary to operate pipettor, increase the air pressure in pipette tips, in pipette tips inner and outer air pressure
In the presence of difference, the liquid in pipette tips is discharged.
Because pipette tips lower end is opening, the liquid sucked in pipette tips is entirely that can just be maintained at pipette tips by the effect of air pressure
It is interior.After the completion of imbibition operation, when shifting pipettor, probably due to action on hand is excessive, hand shaking or pipettor, pipette tips leakage
Gas etc., cause to spill pipette tips by liquid, surrounding environment is polluted.
In view of the above-mentioned problems, it is necessary to design a kind of pipettor gun head that can prevent liquid leakage.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of pipettor gun head, the pipette tips
Liquid leakage, convenient operation can be prevented.
To achieve the above object, the utility model provides following technical scheme：
A kind of pipettor gun head, including connecting portion and main body, the main body lower end are liquid relief portion, the inside in the liquid relief portion
For connector, the edge of the connector is connected with the inner wall sealing in liquid relief portion, and the first mounting hole is offered on the connector
With the second mounting hole, first mounting hole is interior to be provided with feed tube, and the lower end outer wall of the feed tube is interior with the first mounting hole
Wall is tightly connected, and the inner side in liquid relief portion is pointed in the upper end of feed tube；Be provided with drain pipe in second mounting hole, it is described go out liquid
The upper end outer wall of pipe is connected with the inner wall sealing of the second mounting hole, and the outside in liquid relief portion is pointed in the lower end of drain pipe, it is described enter
Liquid pipe and drain pipe are respectively provided with the retractility of radial direction, and the upper port of the feed tube and the lower port of drain pipe are in convergent force
It is turned off under effect.
Using such scheme, when carrying out imbibition operation, the upper port of feed tube automatically opens up under the pressure of liquid, liquid
Body is got enter into pipette tips, and after imbibition terminates, feed tube is closed automatically, can so prevent the process in transfer pipettor
In, there is the situation of liquid leakage, fast and easy transfer pipettor；And when carrying out discharge opeing operation, pipette tips internal liquid squeezes out
Liquid pipe, automatically open up it, can smooth discharge opeing.
Preferably：The connector includes the demarcation strip set along the short transverse in liquid relief portion, the side of demarcation strip
The inner wall sealing of side and connector connects；The upper end of demarcation strip is wholely set semicircular first installation in horizontal direction
Plate, the edge of the first installing plate are connected with the inner wall sealing in liquid relief portion；The lower end of demarcation strip is wholely set in horizontal direction
Semicircular second installing plate, the edge of the second installing plate are connected with the inner wall sealing in liquid relief portion；First mounting hole is located at
On first installing plate, second mounting hole is on the second installing plate.
Using such scheme, the volume in liquid relief portion can be reduced, saves space.
Preferably：The liquid relief subordinate end is additionally provided with filter house, and the lower port of the filter house is provided with filter screen.
Using such scheme, can with the impurity in filtered fluid, prevent liquid relief portion be blocked or impurity pollution liquid and
Surrounding environment.
Preferably：The upper end of the filter house and the lower end plugged and fixed in liquid relief portion.
Using such scheme, it can be filtered with disassembled and assembled freely, easy cleaning and maintenance.
Preferably：The lower port of the main body is provided with filter screen.
Using such scheme, can with the impurity in filtered fluid, prevent liquid relief portion be blocked or impurity pollution liquid and
Surrounding environment.
Preferably：The lower end of the main body and the upper end plugged and fixed in liquid relief portion.
, can be with disassembled and assembled freely main body, easy cleaning and maintenance using such scheme.
Preferably：The plugging position of the lower end in the liquid relief portion is provided with elastic sealing gasket.
Using such scheme, the sealing that liquid relief portion is connected with filter house can be increased, prevent liquid leakage.
Preferably：The plugging position of the upper end in the liquid relief portion is provided with elastic sealing gasket.
Using such scheme, the sealing that liquid relief portion is connected with main body can be increased, prevent liquid leakage.
Compared with prior art, the utility model has the advantages that：This kind of pipettor gun head, when carrying out imbibition operation, enter
The upper port of liquid pipe is automatically opened up under the pressure of liquid, and liquid is got enter into pipette tips, and after imbibition terminates, feed tube is automatic
Close, can so prevent the situation of liquid leakage occur during pipettor is shifted, be advantageous to keep environmental sanitation same
When fast and easy transfer pipettor；And when carrying out discharge opeing operation, pipette tips internal liquid squeezes out liquid pipe, automatically opens up it, can
With smooth discharge opeing.
Brief description of the drawings
Fig. 1 is the external structure schematic diagram of pipettor gun head in embodiment one；
Fig. 2 is the internal structure schematic diagram of pipettor gun head in embodiment one；
Fig. 3 is the internal structure schematic diagram in liquid relief portion in embodiment one；
Fig. 4 is the external structure schematic diagram of pipettor gun head in embodiment two；
Fig. 5 is the internal structure schematic diagram of pipettor gun head in embodiment two；
Fig. 6 is that pipettor gun head disassembles schematic diagram in embodiment two；
Fig. 7 is the internal structure schematic diagram in liquid relief portion in embodiment two.
Description of reference numerals:1st, connecting portion；2nd, main body；201st, lower inlaying grafting part；202nd, the first filter screen；3rd, liquid relief portion；301、
First elastic sealing gasket；302nd, the second elastic sealing gasket；4th, connector；401st, the first installing plate；402nd, the second installing plate；403、
Demarcation strip；404th, the first mounting hole；405th, the second mounting hole；5th, feed tube；6th, drain pipe；7th, filter house；701st, upper plug division；
702nd, the second filter screen.
Embodiment
Embodiment one：
A kind of pipettor gun head.
Reference picture 1, the pipettor gun head are from top to bottom followed successively by connecting portion 1, main body 2 and liquid relief portion 3, and connecting portion 1 is used
In connection pipettor, main body 2 is used to store liquid, and liquid relief portion 3 is used to sucking or discharging liquid.
Reference picture 2, the inside of liquid relief portion 3 are provided with support member, and support member is provided with funnel shaped feed tube 5 and is all infundibulate
Drain pipe 6, wherein the tip of feed tube 5 is towards the top in liquid relief portion 3, and the tip of drain pipe 6 is towards under liquid relief portion 3
Side.Feed tube 5 and drain pipe 6 are made of the loft material with deformation recovery capability, such as silica gel and rubber.Initial
Under state, the sophisticated mouth of pipe of the sophisticated mouth of pipe and drain pipe 6 of feed tube 5 only exists in closed mode in the presence of convergent force.
The lower end in liquid relief portion 3 is provided with filter screen.
Reference picture 3, connector 4 include the demarcation strip 403 set along the short transverse in liquid relief portion 3, the side of demarcation strip 403
It is connected with the inner wall sealing of connector 4；The upper end of demarcation strip 403 is wholely set semicircular first installation in horizontal direction
Plate 401, the edge of the first installing plate 401 are connected with the inner wall sealing in liquid relief portion 3；The lower end of demarcation strip 403 has been wholely set water
Square upward semicircular second installing plate 402, the edge of the second installing plate 402 is connected with the inner wall sealing in liquid relief portion 3；The
The first mounting hole 404 through plate body is offered on one installing plate 401, through plate body is offered on the second installing plate 402
Two mounting holes 405.Wherein the first mounting hole 404 is used to install drain pipe 6, and the second mounting hole 405 is used to install feed tube 5.
After drain pipe 6 is placed in the first mounting hole 404, its tail end --- the periphery held greatly and the inwall phase of the first mounting hole 404
Fitting, sealing glue is smeared between the inwall of the periphery of drain pipe 6 and the first mounting hole 404 and carries out sealing-in, feed tube 5 and the
The connected mode of two mounting holes 405 is also to use above-mentioned sealing-in mode, is repeated no more.
The process of imbibition is as follows：
Pipette tips and pipettor installation are fixed, pipette tips are inserted in liquid, pipettor is operated, is internally formed pipette tips negative
Pressure, in the presence of ambient pressure, liquid is in the inside of feed tube 5 outwardly against its inwall, the deformation of feed tube 5 expansion, feed liquor
The sophisticated mouth of pipe of pipe 5 is squeezed, and outside liquid is entered inside pipette tips by the sophisticated mouth of pipe of feed tube 5 immediately.In the process,
The outer wall of drain pipe 6 is inwardly extruded by outside liquid, and its sophisticated mouth of pipe is closed more tight, and the liquid outside pipette tips can not pass through
Locate liquid pipe to enter in pipette tips.After stopping operation pipettor, as outside liquid constantly enters in pipette tips, pipette tips portion air pressure gradually becomes
In with the air pressure balance outside pipette tips, when both finally balance, due to the disappearance of negative pressure, outside liquid does not enter back into pipette tips
It is interior.Now, outside liquid loses the extruding force to feed tube 5, and feed tube 5 recovers initial shape in the presence of selfer power
Shape, its sophisticated mouth of pipe are closed.So, the moment of imbibition is being stopped, feed tube 5 may turn off, after so can guarantee that imbibition terminates
Liquid is not had when shifting pipettor to overflow, drip from pipette tips lower end, prevents pollution of the liquid to surrounding environment.
The process of discharge opeing is as follows：
Pipette tips are inserted in container, the liquid inside operation pipettor extruding pipette tips, the liquid inside pipette tips is in pressure
In the inside of drain pipe 6 outwardly against its inwall under effect, the deformation of drain pipe 6 expansion, its sophisticated mouth of pipe is squeezed, inside pipette tips
Be discharged immediately with human body, fall into container.In the process, the liquid inside pipette tips inwardly squeezes in the outside of feed tube 5
The outer wall of liquid pipe 5 is pressed into, the sophisticated mouth of pipe of feed tube 5 is extruded more tight, liquid is not had and is discharged at feed tube 5.
Embodiment two：
A kind of pipettor gun head.
Reference picture 4, the pipettor gun head are from top to bottom followed successively by connecting portion 1, main body 2, liquid relief portion 3 and filter house 7.
Reference picture 6, the upper end of filter house 7 are upper plug division 701, shape and size and the liquid relief portion 3 of upper plug division 701
The shape and size of lower port match.The upper end of upper plug division 701 is provided with the first filter screen 202 for covering its upper port.
The lower end of connecting portion 1 is lower inlaying grafting part 201, the shape and size of lower inlaying grafting part 201 and the upper port in liquid relief portion 3
Shape and size match.The lower end of lower inlaying grafting part 201 is provided with the second filter screen 702 for covering its lower port.Main body 2 can be with shifting
The grafting of liquid portion 3, liquid relief portion 3 can be with the grafting of filter house 7.
First filter screen 202 and the second filter screen 702 cause pipette tips to have the function of double filtration, during imbibition, the
One filter screen 202 and the second filter screen 702 can filter out the impurity in outside liquid, prevent that liquid relief portion 3 is plugged or impurity is dirty
Contaminate the liquid drawn.And during discharge opeing, the first filter screen 202 and the second filter screen 702 can filter out the liquid in pipette tips
In impurity, prevent liquid relief portion 3 be plugged or impurity pollution container in the liquid collected.
Above-mentioned connected structure make it that liquid relief portion 3 and main body 2 can also be free with disassembled and assembled freely, filter and liquid relief portion 3
Dismounting.It so can conveniently clean filter screen and change imbibition portion, maintain easily.
Reference picture 7, the inwall at the upper port in liquid relief portion 3 are provided with the first elastic sealing gasket 301 of ring-type, the first elasticity
Sealing gasket 301 is made up of rubber or silica gel material, and the outer wall and the inner wall sealing in liquid relief portion 3 of the first elastic sealing gasket 301 glue
Connect, the inwall at the lower port in liquid relief portion 3 be provided with ring-type the second elastic sealing gasket 302, the second elastic sealing gasket 302 also by
Rubber or silica gel material are made, and the outer wall of the second elastic sealing gasket 302 is Nian Jie with the inner wall sealing in liquid relief portion 3.
When main body 2 and 3 grafting of liquid relief portion, lower inlaying grafting part 201 is inserted in the upper port in liquid relief portion 3, the first elastic packing
Pad 301 is deformed, and so as to block the gap between the outer wall of lower inlaying grafting part 201 and the inwall in liquid relief portion 3, ensures connection
Sealing, prevented liquid leakage.
When filter house 7 and 3 grafting of liquid relief portion, upper plug division 701 is inserted in the lower port in liquid relief portion 3, and the second elasticity is close
Packing 302 is deformed, and so as to block the gap between the outer wall of upper plug division 701 and the inwall in liquid relief portion 3, ensures to connect
The sealing connect, has prevented liquid leakage.
Described above is only preferred embodiment of the present utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (8)
1. a kind of pipettor gun head, including connecting portion and main body, it is characterized in that：The main body lower end is liquid relief portion, the liquid relief
The inside in portion is connector, and the edge of the connector is connected with the inner wall sealing in liquid relief portion, and is offered on the connector
One mounting hole and the second mounting hole, first mounting hole is interior to be provided with feed tube, the lower end outer wall of the feed tube and the first peace
The inner wall sealing connection in hole is filled, and the inner side in liquid relief portion is pointed in the upper end of feed tube；Drain pipe is provided with second mounting hole,
The upper end outer wall of the drain pipe is connected with the inner wall sealing of the second mounting hole, and the outer of liquid relief portion is pointed in the lower end of drain pipe
Side, the feed tube and drain pipe are respectively provided with the retractility of radial direction, the upper port of the feed tube and the lower port of drain pipe
It is turned off in the presence of convergent force.
2. pipettor gun head according to claim 1, it is characterized in that：The connector includes the short transverse along liquid relief portion
The demarcation strip of setting, the side of demarcation strip and the inner wall sealing of connector connect；The upper end of demarcation strip has been wholely set level side
Upward semicircular first installing plate, the edge of the first installing plate is connected with the inner wall sealing in liquid relief portion；The lower end of demarcation strip
Semicircular second installing plate being wholely set in horizontal direction, the edge of the second installing plate connect with the inner wall sealing in liquid relief portion
Connect；First mounting hole is on the first installing plate, and second mounting hole is on the second installing plate.
3. pipettor gun head according to claim 1, it is characterized in that：The liquid relief subordinate end is additionally provided with filter house, described
The lower port of filter house is provided with filter screen.
4. pipettor gun head according to claim 3, it is characterized in that：Insert the lower end of the upper end of the filter house and liquid relief portion
Connect fixation.
5. pipettor gun head according to claim 1, it is characterized in that：The lower port of the main body is provided with filter screen.
6. pipettor gun head according to claim 1, it is characterized in that：The lower end of the main body and the upper end grafting in liquid relief portion
It is fixed.
7. pipettor gun head according to claim 4, it is characterized in that：The plugging position of the lower end in the liquid relief portion is provided with bullet
Property sealing gasket.
8. pipettor gun head according to claim 6, it is characterized in that：The plugging position of the upper end in the liquid relief portion is provided with bullet
Property sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621461194.6U CN206688719U (en) | 2016-12-29 | 2016-12-29 | A kind of pipettor gun head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621461194.6U CN206688719U (en) | 2016-12-29 | 2016-12-29 | A kind of pipettor gun head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206688719U true CN206688719U (en) | 2017-12-01 |
Family
ID=60439136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621461194.6U Expired - Fee Related CN206688719U (en) | 2016-12-29 | 2016-12-29 | A kind of pipettor gun head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206688719U (en) |
-
2016
- 2016-12-29 CN CN201621461194.6U patent/CN206688719U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171201 Termination date: 20211229 |