CN104258917A - Improved structure of pipette tip - Google Patents
Improved structure of pipette tip Download PDFInfo
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- CN104258917A CN104258917A CN201410544171.0A CN201410544171A CN104258917A CN 104258917 A CN104258917 A CN 104258917A CN 201410544171 A CN201410544171 A CN 201410544171A CN 104258917 A CN104258917 A CN 104258917A
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- liquid
- zone
- transfering gun
- dead zone
- pipette
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Abstract
The invention belongs to the field of experimental equipment and relates to an improved structure of a pipette tip. The improved structure comprises a pipette tip body, wherein the pipette tip body comprises a pipette inserting zone, a liquid accommodating zone and a suction nozzle zone from top to bottom; a first sealing ring and a second sealing ring which are arranged in an upper-and-lower manner are arranged on the inner surface of the lower part of the pipette inserting zone; an air accommodating zone is arranged between the liquid accommodating zone and the pipette inserting zone; the top end of the pipette inserting zone extends out of an external functional ring for facilitating dismounting of the pipette tip. The pipette tip is good in sealing performance, can be connected with and dismounted from a pipette easily, can effectively prevent a liquid from entering the pipette without affecting the correct measuring amount of the liquid and is simple in technology, high in strength and low in cost, and a filter element is not required to be arranged.
Description
Technical field
The invention belongs to experiment equipment field, relate to one and move liquid equipment, specifically a kind of modified node method of liquid transfer gun head.
Background technology
Liquid transfer gun head is at the very large a kind of consumptive material of the field use amount such as medical, biological, chemical, coordinates liquid-transfering gun to use, plays the effect quantitatively measuring liquid.But the connection of existing liquid transfer gun head and liquid-transfering gun exists certain problem, such as: 1. sealing is good not, occurs leakage, poor accuracy affects experimental result; 2. need to use certain dynamics closely could block jail with liquid-transfering gun, with hand pin liquid transfer gun head on liquid-transfering gun with strength by or liquid-transfering gun is put into rifle head, stamp with strength, all can cause the heavy wear of liquid-transfering gun, and the former also can cause cross pollution; 3., when unloading liquid transfer gun head, only rely on the thrust of liquid-transfering gun not unload, need by under another hand-lifting, one is cumbersome, and two come also can cause cross pollution.These problems have to be solved.For this reason, the patent No. is that the Chinese patent of CN203108556 discloses a kind of bayonet type liquid transfer gun head on August 7th, 2013, and head comprises liquid transfer gun head body, is provided with at least one projection in the upper end sidewall of liquid transfer gun head, thick bottom the top thin of described projection.This bayonet type liquid transfer gun head structure is simple, easy to use, to liquid-transfering gun without wearing and tearing.But though this liquid transfer gun head solves liquid-transfering gun, and difficulty is inserted, the problem that difficulty is pulled up, but because projection can affect sealing, still there will be leakage problem, and during imbibition, overexert, can by draws fluid liquid-transfering gun, cause cross pollution, the and for example patent No. Chinese patent that is CN102921482 a kind of liquid transfer gun head structure with filter core disclosed in the 13 days February in 2013, though can effectively prevent liquid from entering move sap cavity, but in practical operation, filter core is easy to be in liquid level contact position, especially when drawing the liquid of heap(ed) capacity, such filter core will touch liquid, thus absorbing fluid, decrease the original amount of liquid, make the liquid that measures on the low side, affect experimental result, the setting of filter core also more or less can affect the smooth absorption of liquid.
Summary of the invention
The object of the invention is the above-mentioned defect solving prior art existence, provide a kind of modified node method of liquid transfer gun head, liquid transfer gun head good airproof performance is easily connected with between liquid-transfering gun, easily unloads, and liquid can not enter liquid-transfering gun again, does not affect again the right amount of liquid.
In order to achieve the above object, the present invention adopts following technical scheme: a kind of modified node method of liquid transfer gun head, comprise rifle head main body, described rifle head main body comprises liquid-transfering gun insert district from top to bottom, puts liquid zone and suction nozzle district, the lower inner surface of described liquid-transfering gun insert district is provided with the first encryption circle setting up and down, the second encryption circle, described put to be provided with between liquid zone and described liquid-transfering gun insert district put dead zone, the top of described liquid-transfering gun insert district extends outward the outer function circle be convenient to liquid transfer gun head and unloaded.
In this technical scheme, carry out liquid-transfering gun and liquid transfer gun head is tightly connected by first and second encryption circle, abandon thorough seal in prior art and contact, more easily insert and unload, and sealing effectiveness also can be guaranteed; Outer function circle is set on the top of liquid-transfering gun insert district, unloads rifle head to liquid-transfering gun and impetus is provided, unload rifle laborsaving for first watch; Dead zone is put in setting, and liquid is exceeded maximum figure by suction provides a buffering, prevents inspiration liquid-transfering gun.
As preferably, described in put dead zone internal diameter be greater than described in put the internal diameter of liquid zone.Improve buffer level, more effectively prevent liquid to be sucked into liquid-transfering gun.
As preferably, described in put dead zone internal diameter by near described liquid-transfering gun insert district near described in put liquid zone and reduce gradually.Put dead zone and mainly improve buffering to the liquid being drawn through maximum boundary line, meanwhile, the liquid be drawn through also needs to flow back to put liquid zone, and this technical scheme is put dead zone and put the landslide transition forming certain slope between liquid zone, is beneficial to the backflow of liquid.
As preferably, described first encryption circle is 0.1-0.3mm with the distance between the second encryption circle.Both ensure that sealing, and be conducive to the insertion of liquid-transfering gun and unload.
As preferably, described in put dead zone and the described contact surface putting liquid zone and be provided with to indicate and enclose.Be convenient to observe liquid and arrive maximum boundary line, especially when using liquid-transfering gun, overexert, liquid, rapidly in inspiration rifle head, can be observed liquid in time and whether exceed maximum boundary line, to unclamp liquid-transfering gun in time, allows liquid backflow.
As preferably, described instruction circle is for being arranged on instruction circle in described rifle head main body inner surface.Can not only mark action be played, and can also barrier liquid upper reaches to a certain extent.
As preferably, put the internal diameter of dead zone described in the internal diameter of described liquid-transfering gun insert district is greater than, described liquid-transfering gun insert district is formed with described junction of putting dead zone and is connected plane.This technical scheme can prevent liquid-transfering gun transition from inserting in rifle head, and its wearing and tearing that arrive, protection liquid-transfering gun.
As preferably, the outer wall of described rifle head main body is provided with at least two axial fins be oppositely arranged.Being convenient to liquid transfer gun head is arranged in rifle head box, increases the intensity of rifle head.
As preferably, the thickness of described axial fin reduces from bottom to up gradually.
As preferably, described in put dead zone height be 0.2-0.5mm.
By implementing technique scheme, liquid transfer gun head good airproof performance of the present invention is easily connected with between liquid-transfering gun, easily unloads, and effectively stop liquid to enter liquid-transfering gun, do not affect again the right amount taken amount of liquid, need not arrange filter core, technique is simple, and intensity is high, and cost is low.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of one embodiment of the invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, utilize specific embodiment, the invention will be further described.
A kind of modified node method of liquid transfer gun head, as shown in Figure 1, comprise rifle head main body, comprise liquid-transfering gun insert district 11 from top to bottom, put liquid zone 12 and suction nozzle district 13, the lower inner surface of liquid-transfering gun insert district 11 is provided with the first encryption circle 111, second setting up and down and encrypts circle 112, optimum distance between two encryption circles is 0.1-0.3mm, and the present embodiment is 0.2mm.Put to be provided with between liquid zone 12 and liquid-transfering gun insert district 11 internal diameter be greater than put liquid zone 12 internal diameter put dead zone 14, and, the internal diameter putting dead zone 14 reduces, to realize putting dead zone 14 and putting round and smooth gradient transition between liquid zone 12 near putting liquid zone 12 gradually by near liquid-transfering gun insert district.The height putting dead zone 14 is 0.2-0.5mm, and it is provided with interior instruction circle 141 with the contact surface putting liquid zone 12, plays the effect at mark and barrier liquid upper reaches to a certain extent.The top of liquid-transfering gun insert district 11 extends outward the outer function circle 113 be convenient to liquid transfer gun head and unloaded; the internal diameter of liquid-transfering gun insert district 11 is greater than the internal diameter putting dead zone 14; formed with the junction of putting dead zone 14 in liquid-transfering gun insert district 11 and be connected plane; prevent liquid-transfering gun transition from inserting in rifle head; and its wearing and tearing that arrive, protection liquid-transfering gun.
Claims (8)
1. the modified node method of a liquid transfer gun head, comprise rifle head main body, described rifle head main body comprises liquid-transfering gun insert district (11) from top to bottom, puts liquid zone (12) and suction nozzle district (13), it is characterized in that: the lower inner surface of described liquid-transfering gun insert district (11) is provided with the first encryption circle (111) setting up and down, the second encryption circle (112), described put to be provided with between liquid zone (12) and described liquid-transfering gun insert district (11) put dead zone (14), the top of described liquid-transfering gun insert district (11) extends outward the outer function circle (113) being convenient to liquid transfer gun head and unloading.
2. the modified node method of a kind of liquid transfer gun head according to claim 1, is characterized in that: described in put dead zone (14) internal diameter be greater than described in put the internal diameter of liquid zone (12).
3. the modified node method of a kind of liquid transfer gun head according to claim 2, is characterized in that: described in put dead zone (14) internal diameter by near described liquid-transfering gun insert district (11) near described in put liquid zone (12) and reduce gradually.
4. the modified node method of a kind of liquid transfer gun head according to claim 1, is characterized in that: the distance that described first encryption circle (111) and the second encryption are enclosed between (112) is 0.1-0.3mm.
5. the modified node method of a kind of liquid transfer gun head according to claim 1, is characterized in that: described in put dead zone (14) and be provided with to indicate with the described contact surface putting liquid zone (12) and enclose (141).
6. the modified node method of a kind of liquid transfer gun head according to claim 5, is characterized in that: described instruction circle (141) is for being arranged on instruction circle in described rifle head main body inner surface.
7. the modified node method of a kind of liquid transfer gun head according to claim 1, it is characterized in that: the internal diameter putting dead zone (14) described in the internal diameter of described liquid-transfering gun insert district (11) is greater than, described liquid-transfering gun insert district (11) is formed with described junction of putting dead zone (14) and is connected plane.
8. the modified node method of a kind of liquid transfer gun head according to claim 1, is characterized in that: described in put dead zone (14) height be 0.2-0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410544171.0A CN104258917B (en) | 2014-10-15 | 2014-10-15 | A kind of modified node method of liquid transfer gun head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410544171.0A CN104258917B (en) | 2014-10-15 | 2014-10-15 | A kind of modified node method of liquid transfer gun head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104258917A true CN104258917A (en) | 2015-01-07 |
| CN104258917B CN104258917B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410544171.0A Active CN104258917B (en) | 2014-10-15 | 2014-10-15 | A kind of modified node method of liquid transfer gun head |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112156820A (en) * | 2020-08-28 | 2021-01-01 | 江苏福维健康科技有限公司 | Dropper with accurate metering function and using method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4999164A (en) * | 1986-10-20 | 1991-03-12 | Eppendorf-Netheler-Hinz Gmbh | Pipetting device comprising a retaining cone for holding a slip-on pipette tip and pipette tip for such pipetting device |
| US20120213677A1 (en) * | 2011-02-22 | 2012-08-23 | Rainin Instrument, Llc | Pipette and sealing tip |
| CN102830241A (en) * | 2005-09-05 | 2012-12-19 | 环球生物研究株式会社 | Various substances holder treating apparatus and method of mentioned treatment |
| CN102921482A (en) * | 2012-11-06 | 2013-02-13 | 无锡耐思生物科技有限公司 | Pipetting gun head structure with filter elements |
| CN102941132A (en) * | 2012-10-30 | 2013-02-27 | 无锡耐思生物科技有限公司 | Pipette tip structure |
| CN203711059U (en) * | 2014-01-25 | 2014-07-16 | 四川农业大学 | Quantitative micropipettor sucker |
| CN204093471U (en) * | 2014-10-15 | 2015-01-14 | 浙江硕华医用塑料有限公司 | A kind of modified node method of liquid transfer gun head |
-
2014
- 2014-10-15 CN CN201410544171.0A patent/CN104258917B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4999164A (en) * | 1986-10-20 | 1991-03-12 | Eppendorf-Netheler-Hinz Gmbh | Pipetting device comprising a retaining cone for holding a slip-on pipette tip and pipette tip for such pipetting device |
| CN102830241A (en) * | 2005-09-05 | 2012-12-19 | 环球生物研究株式会社 | Various substances holder treating apparatus and method of mentioned treatment |
| US20120213677A1 (en) * | 2011-02-22 | 2012-08-23 | Rainin Instrument, Llc | Pipette and sealing tip |
| CN102941132A (en) * | 2012-10-30 | 2013-02-27 | 无锡耐思生物科技有限公司 | Pipette tip structure |
| CN102921482A (en) * | 2012-11-06 | 2013-02-13 | 无锡耐思生物科技有限公司 | Pipetting gun head structure with filter elements |
| CN203711059U (en) * | 2014-01-25 | 2014-07-16 | 四川农业大学 | Quantitative micropipettor sucker |
| CN204093471U (en) * | 2014-10-15 | 2015-01-14 | 浙江硕华医用塑料有限公司 | A kind of modified node method of liquid transfer gun head |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112156820A (en) * | 2020-08-28 | 2021-01-01 | 江苏福维健康科技有限公司 | Dropper with accurate metering function and using method thereof |
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| Publication number | Publication date |
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| CN104258917B (en) | 2016-01-20 |
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Address after: 313220 Deqing County Province, Huzhou City, the town of bell hill road, No., No. 148 Patentee after: Zhejiang Sorfa Life Science Research Co., Ltd. Address before: 313220 Deqing County Province, Huzhou City, the town of bell hill road, No., No. 148 Patentee before: Zhejiang Sorfa Medical Plastic Co.,Ltd. |