CN202185317U - Convenient-delivery device for liquid - Google Patents
Convenient-delivery device for liquid Download PDFInfo
- Publication number
- CN202185317U CN202185317U CN2011203581963U CN201120358196U CN202185317U CN 202185317 U CN202185317 U CN 202185317U CN 2011203581963 U CN2011203581963 U CN 2011203581963U CN 201120358196 U CN201120358196 U CN 201120358196U CN 202185317 U CN202185317 U CN 202185317U
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- CN
- China
- Prior art keywords
- piston
- liquid
- pipette
- piston cavity
- delivery tube
- 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 relates to a medical and chemical liquid delivery device, in particular to a delivery device for commonly-used liquid in laboratories. A piston handle of a piston device is connected with a piston seat in a piston cavity by the aid of a connecting rod, a spring is mounted between the lower end of the piston seat and the piston cavity, a one-way air inlet valve and a one-way air outlet valve are arranged at the lower end of the piston cavity, the one-way air inlet valve is connected with a liquid delivery tube, a liquid storage groove is arranged in the middle of the liquid delivery tube, an air return valve is mounted at the upper end of the liquid delivery tube between the piston cavity and the liquid storage groove and connected with a press rod, the press rod is connected with a marshall spring, the liquid delivery tube on the lower portion of the liquid storage groove is provided with graduations, and a positioning cap is sleeved at the lower end of the liquid delivery tube. The convenient-delivery device has the advantages of simple structure, convenience in operation, accuracy and fastness in liquid measuring and taking, no pollution and low cost, and is easy to be popularized.
Description
(1) technical field
The utility model relates to medical science, and the chemical liquid transfer device is specifically related to the transfer device that liquid is used in the laboratory always.
(2) prior art
Traditional liquid-transfering device is used when moving liquid by rubber pipette bulb and the supporting use of pipette, pushes rubber pipette bulb gently earlier and drains air; And guarantee that rubber pipette bulb point mouth contacts with pipette, when unclasping rubber pipette bulb gently, the liquid level in the pipette slowly rises; When being above standard graduation mark, remove rubber pipette bulb rapidly, block the pipette mouth of pipe with right hand forefinger simultaneously; Slowly move forefinger, make liquid level slowly drop to the master scale line, promptly accomplish the liquid process of moving.Traditional liquid-transfering device is not easy control, needs exercise for a long time to grasp operation, and is not easy to operate for the new person who just contacts experiment, the error that easy generation is bigger.Easily with in the draws fluid rubber pipette bulb, damage rubber pipette bulb and polluted liquid simultaneously during careless manipulation.Because the right hand directly contacts pipette, if liquid is volatile, poisonous, severe corrosive then can endanger people's health.
(3) summary of the invention
The purpose of the utility model causes the collimation error, relatively poor, the problem of environment pollution caused of precision to existing liquid-transfering device bimanualness exactly, and a kind of convenient liquid-transfering device of measuring liquid rapidly simple in structure, easy to operate, pollution-free, accurate is provided.
The technical scheme of the utility model is to comprise piston apparatus, return-air valve; Pipette, the piston handle of piston apparatus is connected with the interior piston seat of piston cavity through connecting rod, between piston seat lower end and the piston cavity spring is installed; The lower end of piston cavity is provided with breather check valve and venting check valve, and breather check valve is connected with pipette, and the pipette middle part is provided with hopper; Pipette upper end between piston cavity and the hopper is equipped with return-air valve, and return-air valve is connected with depression bar, and depression bar is connected with marshall springs; The pipette of hopper bottom is provided with scale, and the lower end of pipette is nested with positioning cap.
The outer upper end of the piston cavity of piston apparatus is equipped with the stick shift sheet.On the piston seat of piston apparatus sealing ring is installed.The positioning cap inboard is provided with the asperity of at least two circles.
The beneficial effect of the utility model: a people can conveniently accomplish the suction of liquid on the other hand and blow out action; Can regulate continuously; Change the liquid level in the body through regulating air inflow,, keep the precision of pipette high because positioning cap is installed; Can reduce infringement and environmental pollution, have the characteristics of safe, easy and simple to handle, cheap practicality, good airproof performance, high efficiency simultaneously human body.
(4) description of drawings
Fig. 1 is the structural representation of the utility model.
(5) specific embodiment
The utility model combines accompanying drawing to further specify, and specific embodiments is to comprise piston apparatus 1; Return-air valve 17, pipette 14, the piston cavity 4 outer upper ends of piston apparatus 1 are equipped with stick shift sheet 2; The piston handle 3 of piston apparatus 1 is connected with piston cavity 4 interior piston seats 7 through connecting rod 5, and sealing ring 6 is installed on the piston seat 7, between piston seat 7 lower ends and the piston cavity 4 spring 8 is installed; The lower end of piston cavity 4 is provided with breather check valve 10 and venting check valve 9, and breather check valve 10 is connected with pipette 14, and pipette 14 middle parts are provided with hopper 11; Pipette 14 upper ends between piston cavity 4 and the hopper 11 are equipped with return-air valve 17; Return-air valve 17 is connected with depression bar 16, and depression bar 16 is connected with marshall springs 15, and the pipette 14 of hopper 11 bottoms is provided with scale 12; The lower end of pipette 14 is nested with positioning cap 13, and positioning cap 13 inboards are provided with the asperity of at least two circles.
The utility model operating procedure is that the user of service holds piston cavity 4, for easy to use; Thumb places the position of piston handle 3; Forefinger places the position under the stick shift sheet 2, and to prevent coming off of convenient liquid-transfering device, middle finger is placed on the depression bar 16; To make things convenient for pressing lever 16, pipette 14 lower ends are placed liquid to be transferred.If in the chemical apparatuses bottle, get liquid, 13 covers of the positioning cap on the pipette 14 are moved to cover bottleneck, can reduce infringement and the environmental pollution of toxic and harmful to human body.After accomplishing the aforesaid operations step, whether inspection return-air valve 17 closes, if do not close, middle finger is not wanted pressing lever 16; After guaranteeing whole pipeline sealing, thumb is pushed piston handle 3 downwards, and piston seat 7 moves down, and venting check valve 9 is opened; Breather check valve 10 is closed, and the gases in the piston cavity 4 are discharged, when piston seat 7 moves to least significant end; Unclamp piston handle 3, move on automatically at the effect lower piston seat of spring 87, and under the effect of atmospheric pressure; Venting check valve 9 is closed, and breather check valve 10 is opened, and liquid enters into pipette 14.Repeat the aforesaid operations process, the liquid in pipette 14 arrives preset volume, just can stop to push piston handle 3.If liquid surpasses preset vol, unnecessary liquid enters in the hopper 11 at pipette 14 middle parts, prevents that liquid from entering in the piston apparatus 1.When middle finger applying light bar 16, return-air valve 17 is opened, and pipette 14 is connected with atmosphere; Flow out liquid in the pipette 14 lower end from pipette 14 under the gravity effect at this moment, through pressing lever 16, regulates the speed of fluid discharge in the pipette 14; When treating that liquid in the pipette 14 drops to the scale value that needs; Stop pressing lever 16, the liquid in the pipette 14 is needed liquid, can once put into needed laboratory apparatus.Through control depression bar 16, can realize that also liquid repeatedly discharges, after the completion imbibition; Write down the scale value of liquid in the initial pipette 14, the process of repeated presses bar 16 is treated the scale value that liquid drops to be needed; Promptly the difference of twice scale value is the liquid volume of emitting; After moving the liquid completion, clean pipette 14, treat after the drying to use next time.
Claims (4)
1. a convenient liquid-transfering device comprises piston apparatus (1), return-air valve (17); Pipette (14) is characterized in that: the piston handle (3) of piston apparatus (1) is connected with the interior piston seat (7) of piston cavity (4) through connecting rod (5), between piston seat (7) lower end and the piston cavity (4) spring (8) is installed; The lower end of piston cavity (4) is provided with breather check valve (10) and venting check valve (9); Breather check valve (10) is connected with pipette (14), and pipette (14) middle part is provided with hopper (11), and pipette (14) upper end between piston cavity (4) and the hopper (11) is equipped with return-air valve (17); Return-air valve (17) is connected with depression bar (16); Depression bar (16) is connected with marshall springs (15), and the pipette (14) of hopper (11) bottom is provided with scale (12), and the lower end of pipette (14) is nested with positioning cap (13).
2. convenient liquid-transfering device according to claim 1 is characterized in that: the outer upper end of the piston cavity (4) of piston apparatus (1) is equipped with stick shift sheet (2).
3. convenient liquid-transfering device according to claim 1 is characterized in that: on the piston seat (7) of piston apparatus (1) sealing ring (6) is installed.
4. convenient liquid-transfering device according to claim 1 is characterized in that: positioning cap (13) inboard is provided with the asperity of at least two circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203581963U CN202185317U (en) | 2011-08-26 | 2011-08-26 | Convenient-delivery device for liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203581963U CN202185317U (en) | 2011-08-26 | 2011-08-26 | Convenient-delivery device for liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202185317U true CN202185317U (en) | 2012-04-11 |
Family
ID=45916795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203581963U Expired - Fee Related CN202185317U (en) | 2011-08-26 | 2011-08-26 | Convenient-delivery device for liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202185317U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920547A (en) * | 2014-04-16 | 2014-07-16 | 浙江海洋学院 | Transfer pipette auxiliary device |
| CN113814012A (en) * | 2021-09-16 | 2021-12-21 | 上海陶术生物科技有限公司 | Reagent sample is with stabilizing liquid-transfering equipment |
-
2011
- 2011-08-26 CN CN2011203581963U patent/CN202185317U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920547A (en) * | 2014-04-16 | 2014-07-16 | 浙江海洋学院 | Transfer pipette auxiliary device |
| CN103920547B (en) * | 2014-04-16 | 2015-08-19 | 浙江海洋学院 | Pipette servicing unit |
| CN113814012A (en) * | 2021-09-16 | 2021-12-21 | 上海陶术生物科技有限公司 | Reagent sample is with stabilizing liquid-transfering equipment |
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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 |
Granted publication date: 20120411 Termination date: 20140826 |
|
| EXPY | Termination of patent right or utility model |