CN202538805U - Reusable quantitative liquid transfer device - Google Patents
Reusable quantitative liquid transfer device Download PDFInfo
- Publication number
- CN202538805U CN202538805U CN2012201278966U CN201220127896U CN202538805U CN 202538805 U CN202538805 U CN 202538805U CN 2012201278966 U CN2012201278966 U CN 2012201278966U CN 201220127896 U CN201220127896 U CN 201220127896U CN 202538805 U CN202538805 U CN 202538805U
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- Prior art keywords
- piston
- cylindrical portion
- reusable
- dial plate
- quantitative liquid
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Abstract
The utility model discloses a reusable quantitative liquid transfer device, which comprises a cylindrical main body, a dial plate and a drainage inclined pipe, wherein a piston fixing device is arranged in the cavity of the cylindrical part of the cylindrical main body and connected with a piston capable of moving vertically, a metal wafer in the middle of which a circular hole is formed is arranged at the bottom of the cylindrical part, a first rubber cup is arranged on the metal wafer, a spring is embedded between the bottom of the piston and the first rubber cup, and a small ball is arranged on the cylindrical part and a suction pipe part; the dial plate is fixedly arranged above the cylindrical part, the fulcrum of a control handle is arranged in the center of the dial plate, the top of the piston is connected with one end of a hard rod, and the other end of the hard rod is connected to the edge of the control handle close to the dial plate; and the drainage inclined pipe is arranged in the middle of the cylindrical part, and a second rubber cup is arranged at the joint of the cavity of the drainage inclined pipe and the upper cavity of the cylindrical part. The device is simple in structure and convenient to operate, quantitative liquid transfer and continuous multi-times liquid taking are realized by changing the pressure difference, waste produced by consumption of the conventional disposable liquid transfer pipe is greatly reduced, and agent pollution can be effectively prevented.
Description
Technical field
The utility model relates to laboratories, field such as a kind of chemical industry, scientific research, teaching dosing mechanism commonly used, particularly a kind ofly relates to reusable quantitative liquid-transfering device.
Background technology
Laboratory pipette commonly used is a kind of formula instrument that measures at present, can pipette certain amount of fluid according to the volume of emitting liquid.Mostly be one to have the craspedodrome glass tube of scale, the centre that has also has the part of expanding, and its lower end is sharp mouth shape, and pipette commonly used has 1,2,5,10 with specification such as 25ML, pipette volume and can be accurate to 0.01ML.To pinch the ear washing bulb sharp-crested of flat back discharging air during use and insert or be right after at pipette (or working power device) suitable for reading, and put into and wait to pipette reagent, the ear washing bulb that comes up is with in the liquid suction line; Remove ear washing bulb when extremely required scale graticule is above, block the mouth of pipe immediately, pipette is proposed liquid level with forefinger; Loosen slightly finger make liquid in pipe flow out to the solution concave meniscus just and graticule tangent; Then block the mouth of pipe immediately, take out pipette, liquid is moved in the container to be accepted.For avoiding reagent to be polluted; The pipette that need more renew when taking different reagent; Pipette should clean up or use disposable pipette (disposable pipette is used in the laboratory more at present) immediately after finishing using, the pipette use amount is big; Cleaning takes time and effort, and some artificial pollutions are inevitable.A large amount of uses of disposable pipette become the bigger funds expenditure in some laboratories again, and are unfavorable for environmental protection.
Summary of the invention
Can not nonexpondable shortcoming in order to overcome original pipette; The purpose of the utility model is to provide a kind of and is installed on the general reagent bottle; During use through the Artificial Control handle can realize repeatedly, continuously, the device of quantitative liquid getting, in order to replace original liquid taking device pipette.Change comparatively cheap common rifle head during each the use and get final product, save the consumptive material fund, and can avoid reagent to be polluted to the full extent.
For reaching above purpose, the technical scheme that the utility model adopts is: a kind of reusable quantitative liquid-transfering device is characterized in that; Comprise: a cylindrical body; Comprise the cylindrical portion and the pipette portion that connect up and down, a piston fixing device is arranged in the cavity of said cylindrical portion, connect a piston movable up and down; Establish a centre in the bottom of said cylindrical portion and offer round-meshed metal disk; Said metal disk is provided with first rubber cup, and a spring is embedded between said piston bottom end and said first rubber cup, in said cylindrical portion and said pipette portion one bead is set;
One dial plate is installed in the top of said cylindrical portion, and the fulcrum of a joystick is located at the center of said dial plate, and the top of said piston connects an end of a stiff rod, and the other end of said stiff rod is connected the nearly said dial plate of said joystick edge;
One discharge opeing inclined tube is arranged on the middle part of said cylindrical portion, and the upper cavity connecting place of the cavity of said discharge opeing inclined tube and said cylindrical portion is provided with second rubber cup.
Reasonable is that said device further comprises: a bottle cap is set in the below that said cylindrical portion is connected with said discharge opeing inclined tube.
Reasonablely be, the nearly said discharge opeing inclined tube of said second rubber cup exports a side and is provided with second filter membrane, and mouth of pipe place, adjacent pipette top, said bead below is provided with first filter membrane.
Reasonable is that the axle center of said dial plate center and said piston, said spring is in same vertical axes.
Reasonable is that said dial plate comprises band dial part and is not with the dial part.
Reasonable is that the range of said band dial part is 0-25ML.
Reasonable is that said bottle cap has external screw thread, and its caliber size is consistent with the reagent bottle caliber size.
The utility model is simple in structure, and is easy to operate, changes through pressure reduction and realizes quantitatively moving liquid and continuous several times is got liquid.A reagent bottle only need be installed once this device, changes common rifle head at every turn when testing and gets final product, and has significantly reduced the waste that original disposable pipette consumption produces, and can effectively prevent reagent contamination.
Description of drawings
Below, with reference to accompanying drawing, for those skilled in the art that, from the detailed description to the utility model, above-mentioned and other purposes of the utility model, feature and advantage will be obvious.
Fig. 1 is the planar structure cutaway view (joystick pressed status) of the utility model;
Fig. 2 is the planar structure cutaway view (carrying state on the joystick) of the utility model;
Fig. 3 is the vertical view of the utility model.
Description of reference numerals:
1. dial plate
2. dial plate band scale place (maximum range 25.00ML pipettes volume and can be accurate to 0.01ML)
3. joystick and dial plate tie point (can make joystick in perpendicular, freely rotate 360 °)
4. joystick (, can reading registration and realize quantitative liquid getting) through pointer indication dial plate upward with pointer
5. the stiff rod of joystick and piston space (respectively there is one rotatable 360 ° tie point at two ends, with 3)
6. vertical axes
Piston fixing device (centre is a circular hole, piston 8 can be therefrom through and move up and down)
8. piston
9. bottle cap
10. spring
11. rubber cup
12. metal bar
13. round metal ring plate
14. pipette
15. dial plate does not have the scale place
16. rubber cup
17. filter membrane
18. discharge opeing inclined tube
19. the discharge opeing inclined tube is plugged in rifle head place
20. filter membrane
21. bead
22. cylindrical body
23. cylindrical portion
The specific embodiment
As shown in Figure 1; The reusable quantitative liquid-transfering device of the utility model comprises the cylindrical body 22 of a similar syringe shape, and this cylindrical body 22 comprises the cylindrical portion 23 and pipette portion 14 that connects up and down, the dial plate 1 of the fixing band scale in the top of cylindrical portion 23; The fulcrum of one joystick 4 is located at the center of this dial plate 1; One piston fixing device 7 is arranged in the cavity of cylindrical portion 23, and a circular hole is offered in the centre of this piston fixing device 7, piston 8 can be therefrom through and move up and down.The top of this piston 8 connects an end of a stiff rod 5; The other end of this stiff rod 5 is connected the nearly dial plate of joystick 41 edge; Establish a round metal ring plate 13 in the bottom of cylindrical portion 23, be provided with metal bar 12, in order to support spring 10 and rubber cup 11 near cylindrical portion 23 sidewalls; Round metal ring plate 13 is provided with a rubber cup 11, one springs 10 and is embedded between piston 8 bottoms and rubber cup 11.Below round metal ring plate 13, promptly cylindrical portion 23 is provided with a filter membrane 20 with pipette portion 14 connecting places, and getting between filter membrane 20 and round metal ring plate 13 is provided with a bead 21 in the liquid air chamber.
Connect a discharge opeing inclined tube 18 at the middle part of cylindrical portion 23, the cavity of this discharge opeing inclined tube 18 links to each other with the upper cavity of cylindrical portion 23, is provided with a rubber cup 16 and filter membrane 17 in the two junction.The other end of this discharge opeing inclined tube 18 is plugged in rifle head place 19 for the discharge opeing inclined tube.In addition, cylindrical portion 23 be connected with discharge opeing inclined tube 18 below be arranged with a bottle cap 9.
Wherein, the filter membrane 17 and filter membrane 20 at rubber cup 16 nearly discharge opeing inclined tube 19 outlet one sides and mouth of pipe place, adjacent pipette 14 top, bead 21 belows are in order to guarantee that imbitition does not receive outside contamination.In addition, the axle center of the center of dial plate 1 and piston fixing device 7, spring 10 is in same vertical axes 6.
Introduce the course of work of the utility model device below.
When the quantitative liquid-transfering device of the utility model had just begun, the below that piston 8 is positioned at that it can reach linked to each other with a spring 10 below the piston 8, and this moment, spring 10 compressed, and had maximum flexibility potential energy.Bead 21 is blocked the mouth of pipe place of pipette 14; Rubber cup 11 is under the downward pressure effect of getting the generation of liquid air intracavity gas; The tube wall of being close to cylindrical portion 23; This is got and is full of nitrogen or other rare gas in the liquid air chamber, the rubber cup 16 of discharge opeing inclined tube 18 and cylindrical portion 23 connecting places because of ambient atmos pressure greater than internal pressure, so also become closed condition.Inside and outside air pressure balance was got the liquid air chamber and was remained an air-tight state this moment.
As shown in Figure 2, when the quantitative liquid-transfering device of the utility model uses first, upwards carry joystick 4; Drive through stiff rod 5 is up moved piston 8; Then get the liquid air cavity volume and increase, intracavity gas pressure reduces, and liquid drinks up through the mouth of pipe place of pipette 14 lower ends; Upwards push rubber cup 11 through bead 21, around rubber cup 11, get in the chamber, top.Round metal ring plate 13 is the inboard outwards outstanding annulus (aperture is less than the sphere diameter of bead 21) of a circle of tube wall, and when bead 21 up moves when being blocked by round metal ring plate 13, ball 21 can be blocked the aperture of round metal ring plate 13, stops below liquid again toward the upper reaches.Rubber cup 16 this moment (16 is a rubber cup to the tube chamber indent) is located ambient atmos pressure greater than the chamber internal gas pressure, so rubber cup 16 is a closed condition, ambient atmos can't get into cavity, and is not contaminated with guarantee reagent.
As shown in Figure 1, the pressure-controlled handle 4 instantly, when piston 8 is moved downward; Get the liquid air cavity volume and reduce, intracavity gas is compressed, and pressure increases; Rubber cup 11 receives downward pressure and is close to tube wall; Bead 21 is blocked the pipette 14 upper end mouths of pipe downwards, and intracavity liquid can't be discharged downwards from the pipette 14 upper end mouths of pipe, thereby liquid is up squeezed.At rubber cup 16 places, because of rubber cup 16 receives outside pressure, liquid spills around rubber cup 16, finally discharges from 18 outlets of discharge opeing inclined tube.18 mouthfuls of places of discharge opeing inclined tube are that acid and alkali-resistance, exotic material are processed, and discharge opeing inclined tube 18 is designed to tilt, the one, for the length that increases the flow of liquid outbound path to reduce flow velocity; Preventing to discharge liquid spills; The 2nd, if discharge opeing inclined tube 18 has certain angle, when the discharge opeing inclined tube is plugged in rifle head place 19, can let the box of the plugging in the rifle head suitable angle that tilts; The rifle head both can be seated like this, also can avoid directly inserting the pollution that the rifle head causes with hand.Experiment finishes, and inserts 19 places, rifle head place with alcolhol burner high-temperature sterilization discharge opeing inclined tube, and entangles with rubber sleeve, can guarantee seal, can prevent that again this section that is exposed from being polluted.Re-use after inserting 19 places, rifle head place with alcolhol burner high-temperature sterilization discharge opeing inclined tube earlier when use next time.
Plug new common rifle head at 19 places, the plug in rifle head place of discharge opeing inclined tube when using gets final product so, at every turn.If experiment need be carried out under the condition of requirements at the higher level, can also use acid and alkali-resistance, resistant to elevated temperatures material to whole reagent bottle, can realize the high-temperature sterilization of whole device.When using at ordinary times, be installed in this improved reusable quantitative liquid-transfering device on the general reagent bottle, the bottle cap 9 of screwing gets final product.Reagent uses up just and need screw the cap off a bottle 9 in reagent bottle, applies to other reagent bottle behind the high-temperature sterilization.
In addition; This device can also be applied to the repeatedly interpolation of equivalent reagent; With pointer, the motion of joystick 4 can make the different scales on the pointer indication dial plate 1 on it on the joystick 4, and realizes drawing the liquid of corresponding volume through the corresponding sports that drives piston 8.Only need upwards mention joystick 4 to the corresponding scale place of required total reagent volume, press down the certain degree of joystick 4 at every turn more as required, can have the liquid of corresponding volume to plug in rifle 19 and discharge, thereby realize quantitatively moving liquid from the discharge opeing inclined tube.
More than all embodiment only supply to explain the usefulness of the utility model; But not to the restriction of the utility model; The technical staff in relevant technologies field; Under the situation of spirit that does not break away from the utility model and scope, can also make various conversion or variation, so the category that all technical schemes that are equal to also should belong to the utility model should be limited each claim.
Claims (7)
1. a reusable quantitative liquid-transfering device is characterized in that, comprising:
One cylindrical body; Comprise the cylindrical portion and the pipette portion that connect up and down, a piston fixing device is arranged in the cavity of said cylindrical portion, connect a piston movable up and down; Establish a centre in the bottom of said cylindrical portion and offer round-meshed metal disk; Said metal disk is provided with first rubber cup, and a spring is embedded between said piston bottom end and said first rubber cup, in said cylindrical portion and said pipette portion one bead is set;
One dial plate is installed in the top of said cylindrical portion, and the fulcrum of a joystick is located at the center of said dial plate, and the top of said piston connects an end of a stiff rod, and the other end of said stiff rod is connected the nearly said dial plate of said joystick edge;
One discharge opeing inclined tube is arranged on the middle part of said cylindrical portion, and the upper cavity connecting place of the cavity of said discharge opeing inclined tube and said cylindrical portion is provided with second rubber cup.
2. reusable quantitative liquid-transfering device according to claim 1 is characterized in that said device further comprises:
One bottle cap is set in the below that said cylindrical portion is connected with said discharge opeing inclined tube.
3. reusable quantitative liquid-transfering device according to claim 2 is characterized in that,
The nearly said discharge opeing inclined tube of said second rubber cup exports a side and is provided with second filter membrane, and mouth of pipe place, adjacent pipette top, said bead below is provided with first filter membrane.
4. reusable quantitative liquid-transfering device according to claim 3 is characterized in that,
The axle center of said dial plate center and said piston, said spring is in same vertical axes.
5. reusable quantitative liquid-transfering device according to claim 4 is characterized in that,
Said dial plate comprises band dial part and is not with the dial part.
6. reusable quantitative liquid-transfering device according to claim 5 is characterized in that,
The range of said band dial part is 0-25ML.
7. reusable quantitative liquid-transfering device according to claim 6 is characterized in that,
Said bottle cap has external screw thread, and its caliber size is consistent with the reagent bottle caliber size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201278966U CN202538805U (en) | 2012-03-30 | 2012-03-30 | Reusable quantitative liquid transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201278966U CN202538805U (en) | 2012-03-30 | 2012-03-30 | Reusable quantitative liquid transfer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202538805U true CN202538805U (en) | 2012-11-21 |
Family
ID=47159497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201278966U Expired - Fee Related CN202538805U (en) | 2012-03-30 | 2012-03-30 | Reusable quantitative liquid transfer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202538805U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103961917A (en) * | 2014-05-22 | 2014-08-06 | 安徽理工大学 | Volume-constant pressure-constant automatic suction filter |
| CN105136515A (en) * | 2015-07-29 | 2015-12-09 | 俞雄飞 | Liquid taking pipe for plating solution tank of plating line |
| CN107899627A (en) * | 2017-11-17 | 2018-04-13 | 北京红海科技开发有限公司 | The initial location system and method taken for liquid meter |
| CN108410714A (en) * | 2018-03-16 | 2018-08-17 | 苏杰 | A kind of cell mixing liquid-transfering gun |
| CN110139716A (en) * | 2016-11-14 | 2019-08-16 | 艾卡工厂有限及两合公司 | Hand-held dosing device |
| CN110167671A (en) * | 2016-11-14 | 2019-08-23 | 艾卡工厂有限及两合公司 | Flow unit and hand-held dosing device at least one flow unit |
| CN113856783A (en) * | 2021-12-02 | 2021-12-31 | 潍坊市检验检测中心 | Food inspection ultrasonic cavitation liquid-transfering device |
-
2012
- 2012-03-30 CN CN2012201278966U patent/CN202538805U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103961917A (en) * | 2014-05-22 | 2014-08-06 | 安徽理工大学 | Volume-constant pressure-constant automatic suction filter |
| CN103961917B (en) * | 2014-05-22 | 2015-07-29 | 安徽理工大学 | The automatic nutsch filter of a kind of constant volume level pressure |
| CN105136515A (en) * | 2015-07-29 | 2015-12-09 | 俞雄飞 | Liquid taking pipe for plating solution tank of plating line |
| CN110139716A (en) * | 2016-11-14 | 2019-08-16 | 艾卡工厂有限及两合公司 | Hand-held dosing device |
| CN110167671A (en) * | 2016-11-14 | 2019-08-23 | 艾卡工厂有限及两合公司 | Flow unit and hand-held dosing device at least one flow unit |
| CN107899627A (en) * | 2017-11-17 | 2018-04-13 | 北京红海科技开发有限公司 | The initial location system and method taken for liquid meter |
| CN107899627B (en) * | 2017-11-17 | 2023-09-12 | 北京红海科技开发有限公司 | Initial positioning system and method for liquid metering |
| CN108410714A (en) * | 2018-03-16 | 2018-08-17 | 苏杰 | A kind of cell mixing liquid-transfering gun |
| CN108410714B (en) * | 2018-03-16 | 2021-05-04 | 苏州亚通生物医疗科技有限公司 | Cell mixing pipette |
| CN113856783A (en) * | 2021-12-02 | 2021-12-31 | 潍坊市检验检测中心 | Food inspection ultrasonic cavitation liquid-transfering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20121121 Termination date: 20160330 |