CN105665050A - Liquid transfer tube - Google Patents
Liquid transfer tube Download PDFInfo
- Publication number
- CN105665050A CN105665050A CN201610134538.0A CN201610134538A CN105665050A CN 105665050 A CN105665050 A CN 105665050A CN 201610134538 A CN201610134538 A CN 201610134538A CN 105665050 A CN105665050 A CN 105665050A
- Authority
- CN
- China
- Prior art keywords
- pipet
- cock
- liquid transfer
- transfer tube
- ground
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/0203—Burettes, i.e. for withdrawing and redistributing liquids through different conduits
- B01L3/0206—Burettes, i.e. for withdrawing and redistributing liquids through different conduits of the plunger pump type
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- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A liquid transfer tube comprises a liquid transfer tube body, a ground plug cock and a breathable filter element, wherein scales are arranged on the liquid transfer tube body, a plug cock groove formed in the upper end of the scales of the liquid transfer tube body, the ground plug cock is accommodated in the plug cock groove formed in the liquid transfer tube body and is provided with a through hole communicated with the liquid transfer tube body, and the breathable filter element is arranged in the through hole.The liquid transfer tube conveniently measures liquid volume through the ground plug cock with the filter element and is simple in operation and controllable in speed, and the phenomenon that liquid is sucked into an ear washing ball or is suddenly ejected out when the ear washing ball is overexerted can be avoided.In addition, air can be filtered, and the air in the ear washing ball can be prevented from carrying impurities.The liquid transfer tube is simple in operation and is unlikely to cause liquid transfer failure.
Description
Technical field
The present invention relates to experiment equipment field, particularly to a kind of pipet.
Background technology
Pipet is the common instrument of laboratory in chemistry, chemical industry, medicine, field of Environment Protection. The craspedodrome glass tubing that pipet is up/down perforation conventional at present, during use, pipet is placed in liquid, amass by discharging upper end ear washing bulb hollow cavity interiors, pressure reduction imbitition is formed with ambient pressure, after drawing enough liquid, take away ear washing bulb, pin the mouth of pipe with right hand forefinger rapidly, by control forefinger by amount of pressure or somewhat rotate pipet, make liquid in pipe slowly flow out to solution concave meniscus to required scale place. Then pipet mouth is compressed, pipet is moved in required container simultaneously, carry out discharge opeing. Often because forefinger operation is unskilled or uses fatigue to cause shifting liquid failure in conventional pipet operating process, thus needing to make repeated attempts. And during imbibition, the easy imbibition of ear washing bulb is too quickly, draws liquid into the phenomenon of ear washing bulb, causes solution loss or pollution.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of simple to operate, do not easily cause and move the failed pipet of liquid.
This invention address that its technical problem employed technical scheme comprise that, a kind of pipet, including pipet body, described pipet body is provided with scale, and described pipet body offers cock groove in the upper end of described scale;
Ground cock, is contained in the cock groove of described pipet body, and described ground cock offers the through hole being connected with described pipet body; And
Ventilative filter element, is arranged in described through hole.
Wherein in an embodiment, one end of described ground cock is provided with hexagon swing handle and the ground piston being connected with described hexagon swing handle, and the other end offers the groove for placing anti-slip rubber circle.
Wherein in an embodiment, the material of described ventilative filter element is ultra-high molecular weight polyethylene or multi-layered high-density glass fibre.
Wherein in an embodiment, described pipet also includes cassette pen clip, and described clip-type pen folder includes cassette ring and the clamping bar being connected with described cassette ring, and described pipet body is provided with draw-in groove, and described cassette ring set is located on described draw-in groove.
Wherein in an embodiment, one end that described clamping bar is connected with described cassette ring offers circular hole, for described pipet is suspended on pipet pipe support.
Wherein in an embodiment, described pipet also includes the protection set being set in described pipet body bottom portion.
Wherein in an embodiment, described pipet body being provided with projection, one end of described protection set contacts with described projecting elastic.
Wherein in an embodiment, the material of described protection set is polystyrene, polypropylene or politef.
The through hole of ground piston, by being provided with the ground cock of ventilative filter element on the top of pipet body, is connected with pipet body by rotating ground cock or does not connect, i.e. operable ear washing bulb imbitition by above-mentioned pipet. After absorption, adjust ground piston, closing passage, take off ear washing bulb; The relative position of through hole is adjusted thus adjusting the speed of discharge opeing by piston handle. After discharge opeing, pipet is put protection set, hangs on hook, or be sandwiched on plate with pen clip, or be placed on current version pipet stand. Liquid volume is measured convenient by the ground cock with filter element, simple to operate, speed is controlled, it is possible to liquid sucks ear washing bulb or the phenomenon of ejection suddenly to avoid ear washing bulb to occur when overexerting, air can be filtered, it is to avoid the air in ear washing bulb carries impurity secretly simultaneously. Above-mentioned pipet is simple to operate, do not easily cause shifting liquid failure.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pipet of an embodiment;
Fig. 2 is the structural representation of the ground cock of an embodiment; And
Fig. 3 is the structural representation of the cassette pen clip of an embodiment.
Detailed description of the invention
Hereinafter the specific embodiment of the present invention is described in detail, it should be appreciated that embodiment described herein is the description of the invention and explains the present invention, is not limited to the present invention.
Referring to Fig. 1 and Fig. 2, the pipet 100 of an embodiment includes pipet body 110, the ventilative filter element 130 being contained in the ground cock 120 in pipet body 110, being arranged in ground cock 120. In one embodiment, pipet 100 also includes being set in the cassette pen clip 140 on pipet body 110 and protection set 150.
Specifically, in one embodiment, the circular tube shaped that pipet body 110 is generally hollow, the open-topped diameter of pipet body 110 is slightly less than the caliber of pipet body 110, when moving liquid, ear washing bulb is placed in the opening part at top, and unclamping ear washing bulb after extruding can by liquid assimilating to pipet body 110. The bottom of pipet body 110 is cone-shaped, when moving liquid, is placed in liquid by the bottom opening of pipet body 110 and carries out imbibition.
Pipet body is provided with scale 112, it is possible to pipette the liquid in scale range, when drawing same liquid different volumes liquid, it may not be necessary to change pipet, convenient and swift.
Pipet body 110 offers cock groove 114 at the upper end horizontal direction of scale 112, is used for housing ground cock 120.
Referring to Fig. 1 and 2, in one embodiment, ground cock 120 is contained in the cock groove 114 of pipet body 110, and ground cock 120 can be glass material.
Specifically, one end of ground cock 120 is provided with hexagon swing handle 122 and the ground piston 124 being connected with hexagon swing handle, the other end offers the groove 126 for placing anti-slip rubber circle, and offers the through hole 128 being connected with pipet body 110 on ground piston 124. Rubber ring is set at groove 126 place, it is to avoid ground cock 120 skids off cock groove. In use, by rotating hexagon swing handle 122, the through hole 128 of ground cock 124 is adjusted to vertical direction, communicates with pipet body 110;Or through hole 128 is adjusted to vertical direction, being not communicated with pipet body 110, adjusting the through hole 128 relative position with pipet body 110 thus adjusting the speed of discharge opeing by rotating hexagon swing handle 122.
Ventilative filter element 130, is arranged in through hole 128, and the ventilative shape of filter element 130 and shape and the size of size and through hole 128 match. The material of ventilative filter element 130 can be ultra-high molecular weight polyethylene or multi-layered high-density glass fibre. Ultra-high molecular weight polyethylene has acidproof, alkaline-resisting, the feature of organic solvent-resistant, and the intensity of this material own is big, wearability is good, ensureing its life-span, further, the surface of the outer light of ventilative filter element 130 being made up of this material makes impurity not easily adhesion, recoil backwash easy, energy Reusability, good toughness, filter element is easy fracture not. Adopting the ventilative filter element that multi-layered high-density glass fibre is made to have flux big, combined closure system is big, the feature of resistance to gentle good corrosion resistance. Ventilative filter element 130 can cross the impurity in air filtering, it is also possible to buffering rate of liquid aspiration, it is to avoid draw liquid in ear washing bulb in the process moving liquid. The setting of ventilative filter element 130 makes pipet 100 measure liquid volume conveniently, and simple to operate, speed is controlled, it is possible to liquid sucks ear washing bulb or the phenomenon of ejection suddenly to avoid ear washing bulb to occur when overexerting. Air can be filtered, it is to avoid the air in ear washing bulb carries impurity secretly simultaneously.
Referring to Fig. 1 and 3, in one embodiment, pipet 100 also includes cassette pen clip 140, and pipet body 110 is provided with draw-in groove 116, and cassette ring 142 is set on draw-in groove 116.
Specifically, cassette pen clip 140 includes cassette ring 142 and the clamping bar 144 being connected with cassette ring 142. Cassette ring 142 has certain elasticity, it is possible to be flexibly fastened in draw-in groove 116. One end that clamping bar 144 is connected with cassette ring 142 is opened in circular hole 146, and clamping bar 144 is provided with salient point 148 away from one end of circular hole 146. Clamping bar 144 is for being suspended on pipet pipe support by described pipet. By cassette pen clip 140, pipet 100 is clipped on pipet stand, it is possible to by the circular hole 146 on clamping bar 144, pipet 100 is hung on pipet pipe support. Certainly, in other modes, it is also possible to be not provided with cassette pen clip 140, directly pipet is placed on pipet pipe support.
In one embodiment, pipet 100 also includes being set in the protection set 150 bottom pipet body 110.
Protection set 150 is roughly the same with the shape of pipet body 110; generally speaking; the internal diameter of protection set 150 is slightly larger than the external diameter of pipet body 110; and the external diameter of internal diameter and the pipet body 110 at top one place of protection set 150 is essentially identical, thus protect set 150 can flexible fastening on pipet body 110. The material of protection set 150 can be polystyrene, polypropylene or politef, adopts the protection set 150 that these materials are made to have stronger acid and alkali-resistance, and the ability of organic solvent-resistant, intensity is big, the feature that wearability is good. In one embodiment, pipet body 110 being provided with protruding 118, protection set 150 contacts with this projecting elastic, is tightly fixed on pipet body thus protection is overlapped 150.
During use, pipet 100 is taken off from pipet stand, and protection set 150 is taken off. First extrude the air in ear washing bulb, being inserted by pipet body 110 treats in imbibition body, loosen ear washing bulb, liquid is made to be slowly increased to more than required graduation mark, the through hole 128 of ground cock 124 is adjusted to horizontal level, make the liquid in pipet body 110 static, remove ear washing bulb, the orientation of through hole 128 is regulated by rotating hexagon swing handle 122, make the liquid in pipet body 110 be slowly drop down to concave meniscus and target graduation mark tangent time, through hole 128 is adjusted to horizontal level, makes liquid in pipet body 110 no longer flow out.Pipet body 110 is moved in the container taking up liquid, then through hole 128 is adjusted to upright position, stand about 15 seconds after liquid is released, take out pipet body 110, pipette liquid and operated. After again pipet 100 being cleaned up, put protection set 150, be placed on pipet stand.
The through hole of ground piston, by being provided with the ground cock of ventilative filter element on the top of pipet body, is connected with pipet body by rotating ground cock or does not connect, i.e. operable ear washing bulb imbitition by above-mentioned pipet. After absorption, adjust ground piston, closing passage, take off ear washing bulb; The relative position of through hole is adjusted thus adjusting the speed of discharge opeing by piston handle. After discharge opeing, pipet is put protection set, hangs on hook, or be sandwiched on plate with pen clip, or be placed on current version pipet stand. Measuring liquid volume conveniently by the ground cock with filter element, simple to operate, speed is controlled, it is possible to liquid sucks ear washing bulb or the phenomenon of ejection suddenly to avoid ear washing bulb to occur when overexerting. Air can be filtered, it is to avoid the air in ear washing bulb carries impurity secretly simultaneously. This pipet simple in construction, easy to use, it is simple to produce and promote.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention. It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention. Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. a pipet, it is characterised in that including:
Pipet body, described pipet body is provided with scale, and described pipet body offers cock groove in the upper end of described scale;
Ground cock, is contained in the cock groove of described pipet body, and described ground cock offers the through hole being connected with described pipet body; And
Ventilative filter element, is arranged in described through hole.
2. pipet according to claim 1, it is characterised in that one end of described ground cock is provided with hexagon swing handle and the ground piston being connected with described hexagon swing handle, and the other end offers the groove for placing anti-slip rubber circle.
3. pipet according to claim 1, it is characterised in that the material of described ventilative filter element is ultra-high molecular weight polyethylene or multi-layered high-density glass fibre.
4. pipet according to claim 1, it is characterized in that, described pipet also includes cassette pen clip, and described clip-type pen folder includes cassette ring and the clamping bar being connected with described cassette ring, being provided with draw-in groove on described pipet body, described cassette ring set is located on described draw-in groove.
5. pipet according to claim 4, it is characterised in that one end that described clamping bar is connected with described cassette ring offers circular hole, for being suspended on pipet pipe support by described pipet.
6. pipet according to claim 1, it is characterised in that described pipet also includes the protection set being set in described pipet body bottom portion.
7. pipet according to claim 6, it is characterised in that be provided with projection on described pipet body, one end of described protection set contacts with described projecting elastic.
8. pipet according to claim 6, it is characterised in that the material of described protection set is polystyrene, polypropylene or politef.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610134538.0A CN105665050A (en) | 2016-03-10 | 2016-03-10 | Liquid transfer tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610134538.0A CN105665050A (en) | 2016-03-10 | 2016-03-10 | Liquid transfer tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105665050A true CN105665050A (en) | 2016-06-15 |
Family
ID=56307374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610134538.0A Pending CN105665050A (en) | 2016-03-10 | 2016-03-10 | Liquid transfer tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105665050A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130598A (en) * | 2018-09-05 | 2019-01-04 | 温州市永舟科技有限公司 | A kind of structure is complicated high-precision pen clip |
| CN110940661A (en) * | 2019-11-12 | 2020-03-31 | 大连诚泽检测有限公司 | Suction-type quantitative analysis device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3512944A (en) * | 1967-09-13 | 1970-05-19 | Corning Glass Works | Burette with removable stopcock formed of synthetic resin |
| CN201423289Y (en) * | 2009-06-09 | 2010-03-17 | 陕西科技大学 | Quantitative pipette with cock |
| CN202460661U (en) * | 2012-01-04 | 2012-10-03 | 深圳市红叶杰科技有限公司 | Pipette |
| CN205392488U (en) * | 2016-03-10 | 2016-07-27 | 湖南城市学院 | Pipette with blocking system |
-
2016
- 2016-03-10 CN CN201610134538.0A patent/CN105665050A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3512944A (en) * | 1967-09-13 | 1970-05-19 | Corning Glass Works | Burette with removable stopcock formed of synthetic resin |
| CN201423289Y (en) * | 2009-06-09 | 2010-03-17 | 陕西科技大学 | Quantitative pipette with cock |
| CN202460661U (en) * | 2012-01-04 | 2012-10-03 | 深圳市红叶杰科技有限公司 | Pipette |
| CN205392488U (en) * | 2016-03-10 | 2016-07-27 | 湖南城市学院 | Pipette with blocking system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130598A (en) * | 2018-09-05 | 2019-01-04 | 温州市永舟科技有限公司 | A kind of structure is complicated high-precision pen clip |
| CN110940661A (en) * | 2019-11-12 | 2020-03-31 | 大连诚泽检测有限公司 | Suction-type quantitative analysis device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160615 |