CN206996636U

CN206996636U - A kind of pipette

Info

Publication number: CN206996636U
Application number: CN201720787990.7U
Authority: CN
Inventors: 许晶
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2018-02-13
Anticipated expiration: 2027-06-30

Abstract

It the utility model is related to chemical experiment device material field, more particularly to a kind of pipette.Including pipette body, conduit, rubber cavity, two slide rails and expansion link, pipette body is provided with graduation mark, and one end of pipette body offers the liquid relief mouth of sharp mouth shape, and other end connecting tube is simultaneously connected by conduit with rubber cavity；Two slide rails set up separately on the corresponding both sides of pipette body lateral surface, elongated lengthwise of two slide rails along pipette body, it is slidably fitted with sliding block on two slide rails, one end of connection expansion link on sliding block, the other end of expansion link perpendicular to the direction of pipette body along being stretched.Pipet stand can be located on fluid sample tank by the utility model, and the convenient fluid sample in fluid sample tank carries out second of imbibition, be easy to use quick.

Description

A kind of pipette

【Technical field】

It the utility model is related to chemical experiment device material field, more particularly to a kind of pipette.

【Background technology】

Pipette is that one kind measures formula instrument apparatus, is only used for measuring the volume that it releases solution.It is required that pipette exactly During the solution of certain volume, the pipette of various different capabilities can be used.Conventional pipette has 1OmL, 25mL and 50mL etc.. At certain temperature, graticule to the capacity between the outlet of lower end of pipette is certain.In general, the application method of pipette is such as Under：(1) successively with washing lotion, running water, distillation water washing pipette：Then washed three times with fluid sample.(2) when pipetting liquid, The tip of pipette to be stretched in people's liquid, hand thumb and middle finger hold place more than neck graticule, and left hand takes ear washing bulb, and With ear washing bulb in liquid suction pipette to more than graticule.Take ear washing bulb away rapidly, the mouth of pipe is pinned with the forefinger of the right hand.Then Semi-coast forefinger, make liquid level slowly, smoothly decline, it is tangent with graticule until liquid concave surface, i.e., by tight forefinger, make liquid not Flow out again.(3) tip of pipette is leaned against on the inwall for receiving capacitance device, loosens forefinger, make liquid freely flow out.At this moment should Capacitance device is set to tilt and make pipette upright.When no longer being flowed out Deng liquid, also to wait a moment, then pipette is taken away.Finally, The tip of pipette can also remaining a small amount of liquid, but originally in the volume of calibration pipette, this partially liq is not calculated Inside.So unnecessary this liquid is blown into external force is received in capacitance device.(4) operated more than using, from pipette freely The liquid of outflow is exactly the volume indicated on pipette.If the required degree of accuracy of experiment is higher, it is also necessary to pipette Carry out calibration.

Following drawback be present in aforesaid operations：1st, use of the people to pipette is not easy to the occupation mode of ear washing bulb.2、 Use to pipette needs two hands to co-operate, and is brought inconvenience to people., it is necessary to incite somebody to action when the 3, carrying out imbibition using pipette Liquid relief mouth stretches into liquid two to three centimetres, and keeps the distance of two to three centimetres of liquid relief mouth and the liquid water surface, when dress liquid-like When the jar of product is black tank, people do not see the liquid level in black tank, it is difficult to the distance that control pipette is stretched into black tank, therefore, It is not easy to the use of operator.

【Utility model content】

In view of the foregoing, it is necessary to a kind of pipette that can be convenient for people to use is provided, afterwards can using the pipette So that pipet stand is located on fluid sample tank, the convenient fluid sample in fluid sample tank carries out second of imbibition, uses Get up convenient and swift.

To reach above-mentioned purpose, technical scheme is used by the utility model：A kind of pipette, including pipette master Body, conduit, rubber cavity, two slide rails and expansion link, the pipette body are provided with graduation mark, and the one of the pipette body End offers the liquid relief mouth of sharp mouth shape, and other end connecting tube is simultaneously connected by conduit with rubber cavity；Two slide rails set up separately On the corresponding both sides of pipette body lateral surface, elongated lengthwise of two slide rails along the pipette body, two institutes State and sliding block is slidably fitted with slide rail, one end of connection expansion link on the sliding block, the other end of the expansion link is along vertically Stretched in the direction of the pipette body.

Further, in addition to controller and lowering or hoisting gear, the controller and lowering or hoisting gear are each provided at the outer of pipette On side, the controller is connected with lowering or hoisting gear, and the lowering or hoisting gear is connected with sliding block.

Further, the pipette body is being additionally provided with the first level sensor and the second water close to one end of liquid relief mouth Level sensor, second level sensor is between the first level sensor and liquid relief mouth, first level sensor It is connected with the second level sensor with controller.

Further, first level sensor is apart from three centimetres of the liquid relief mouth, second level sensor away from From two centimetres of the liquid relief mouth.

Further, the conduit is detachably connected with pipette body for screw thread, and the conduit and rubber cavity are solid Fixed connection.

The utility model has the advantages that：

1st, the utility model passes through the setting to pipette body, conduit, rubber cavity, two slide rails and expansion link, it is intended to Solve the problems, such as to use pipette inconvenience.Because operator is first-class using pipette is put back into pipe support again after pipette imbibition Treat second of imbibition and cause trouble, and residual liquid sample while on mobile pipette to pipe support in pipette is also The waste for elsewhere, causing fluid sample can be dropped in.After inhaling a fluid sample using the pipette, stretched described in stretching Contracting bar, then liquid relief mouth is stretched into fluid sample, the expansion link can be by pipet stand in the tank equipped with fluid sample tank On mouth, secondary imbibition is waited, is convenient for people to operate.In addition, the utility model also eliminates the trouble using ear washing bulb, directly make Pipette can be titrated with rubber cavity or imbibition.

2nd, the utility model passes through to slide rail, sliding block, lowering or hoisting gear, controller, the first level sensor and the second water level The setting of sensor, it is intended to solve during inhaling fluid sample using the pipette, need to constantly adjust liquid relief mouth and stretch Enter the depth in fluid sample so that it is troublesome in poeration the problem of.When inhaling fluid sample using the pipette, liquid relief mouth is stretched into After in fluid sample, the expansion link is then stretched, the expansion link can be by pipet stand in the tank equipped with fluid sample tank On mouth, if now the first level sensor and the second level sensor are not exposed to fluid sample, first water level passes Sensor sends the first signal, and the second level sensor sends secondary signal, and is respectively sent to the first signal and secondary signal At controller, the controller receives the first signal with after secondary signal, that is, controlling lowering or hoisting gear operation, and lowering or hoisting gear is The slow upward sliding of the sliding block will be driven, so as to which the pipette moves relatively downward, until first level sensor Untill touching fluid sample with the second level sensor, controller just controls lowering or hoisting gear to decommission.First water Level sensor and the second level sensor can proceed by imbibition, during imbibition, tank when touching fluid sample Internal fluid sample amount gradually decreases, but the liquid level of fluid sample is down to the process of the second level sensor from first sensor In, pipette remains stationary as, and can still be balanced imbibition.When the liquid level of fluid sample is less than where the second level sensor During place, the controller just controls lowering or hoisting gear to run, so as to which the sliding block drives expansion link upward sliding, and then the liquid relief Pipe moves relatively downward, realizes the normal imbibition of pipette.

【Brief description of the drawings】

Fig. 1 is a kind of structural representation of the front view of pipette of the utility model.

Main element symbol description

In figure：1st, pipette body；11st, graduation mark；12nd, liquid relief mouth；2nd, conduit；3rd, rubber cavity；4th, slide rail；5th, it is sliding Block；6th, expansion link；7th, controller；8th, lowering or hoisting gear；9th, the first level sensor；10th, the second level sensor.It is following specific real The mode of applying will further illustrate the utility model with reference to above-mentioned accompanying drawing.

【Embodiment】

Referring to Fig. 1, in the utility model, a kind of pipette, including a pipette body 1, a conduit 2, a rubber Cavity 3, two slide rails 4 and an expansion link 6, the pipette body 1 are provided with graduation mark 11, and the graduation mark 11 is easy to people to use The position where fluid sample in the pipette body 1 is visually observed, and easily carries out imbibition.The pipette body 1 One end offers the liquid relief mouth of sharp mouth shape, and fluid sample is discharged outside pipette body 1 or inhaled by the liquid relief mouth 12 Enter in pipette body 1.Other end connecting tube 2 is simultaneously connected by conduit 2 with rubber cavity 3；Specifically, the conduit 2 It is detachably connected with pipette body 1 for screw thread, the conduit 2, to be fixedly connected, is conveniently torn open with rubber cavity 3 to pipette Unload, be also convenient for the use of operator.Two slide rails 4 set up separately on the corresponding both sides of the lateral surface of pipette body 1, two cunnings Elongated lengthwise of the rail 4 along the pipette body 1, is slidably fitted with sliding block 5 on two slide rails 4, on the sliding block 5 One end of connection expansion link 6, the other end edge of the expansion link 6 are stretched perpendicular to the direction of the pipette body 1.Make After being terminated with pipette suction fluid sample, liquid relief mouth 12 can be stretched into fluid sample tank, then stretch and stretched described in two After contracting bar 6, i.e., it can facilitate secondary liquid relief by the frame of pipette body 1 in the tank mouth equipped with fluid sample tank.

Please continue to refer to Fig. 1, in the better embodiment of the present embodiment, the pipette also includes the He of a controller 7 One lowering or hoisting gear 8, the lowering or hoisting gear 8 are made up of telescopic air pressure cylinder, and the controller 7 and lowering or hoisting gear 8 are each provided at liquid relief On the lateral surface of pipe, the controller 7 is connected with lowering or hoisting gear 8, and the lowering or hoisting gear 8 is connected with sliding block 5.Pass through controller 7 Control so that expansion link 6 reaches the effect of automatic rise and fall, is convenient for people to use.

Further, the pipette body 1 is being additionally provided with the first level sensor 9 and the close to one end of liquid relief mouth 12 Two level sensors 10, second level sensor 10 between the first level sensor 9 and liquid relief mouth 12, it is specific and Speech, first level sensor 9 is apart from 12 3 centimetres of the liquid relief mouth, and second level sensor 10 is apart from the liquid relief 12 2 centimetres of mouth.The level sensor 10 of first level sensor 9 and second is connected with controller 7.First water level The level sensor 10 of sensor 9 and second is used to sense the liquid of required liquid relief, and generates the first signal and the second letter respectively Number, and send out respectively in the controller 7 being attached thereto, the controller 7 is further according to the first signal and secondary signal control received The operation of lowering or hoisting gear 8 processed, the operation band movable slider 5 of the lowering or hoisting gear 8 are slided on slide rail 4, stretched so as to which sliding block 5 drives The motion of bar 6.During using the pipette, after liquid relief mouth 12 is stretched into fluid sample, the expansion link 6, institute are then stretched State expansion link 6 can by the frame of pipette body 1 in the tank mouth equipped with fluid sample tank, if now the first level sensor 9 with Second level sensor 10 is not exposed to fluid sample, and first level sensor 9 sends the first signal, the second water level Sensor 10 sends secondary signal, and the first signal and secondary signal are sent at controller 7 respectively, and the controller 7 is equal The first signal is received with after secondary signal, that is, controlling lowering or hoisting gear 8 to run, lowering or hoisting gear 8 will drive the sliding block 5 slow Upward sliding, so as to which the pipette body 1 moves relatively downward, until the water level of the first level sensor 9 and second passes Untill sensor 10 touches fluid sample, controller 7 just controls lowering or hoisting gear 8 to decommission, and now operator can be carried out Imbibition.During imbibition, when the liquid level of fluid sample in tank body is less than the second level sensor 10, lowering or hoisting gear 8 is again Drive expansion link 6 to move up, so that pipette body 1 moves relatively downward, realize liquid relief mouth 12 and fluid sample liquid The distance in face is 2-3cm, meets imbibition standard, that is, realizes stable imbibition.

The utility model passes through to conduit 2, rubber cavity 3, slide rail 4, expansion link 6, controller 7, lowering or hoisting gear 8, first The setting of the level sensor 10 of level sensor 9 and second so that can be erected at liquid-like after the pipette use On product tank, the convenient fluid sample in fluid sample tank carries out second of imbibition, is easy to use quick；In addition, this reality With it is new also solve using the pipette inhale fluid sample during, need to constantly adjust liquid relief mouth and stretch into fluid sample Interior depth so that it is troublesome in poeration the problem of.

Described above is the detailed description for the preferable possible embodiments of the utility model, but embodiment is not limited to Patent claim of the present utility model, the equal change or modification completed under the technical spirit suggested by all the utility model Change, all should belong to the utility model and cover the scope of the claims.

Claims

A kind of 1. pipette, it is characterised in that：It is described including pipette body, conduit, rubber cavity, two slide rails and expansion link Pipette body is provided with graduation mark, and one end of the pipette body offers the liquid relief mouth of sharp mouth shape, and other end connection is led Manage and connected by conduit with rubber cavity；Two slide rails set up separately on the corresponding both sides of pipette body lateral surface, two institutes Elongated lengthwise of the slide rail along the pipette body is stated, is slidably fitted with sliding block on two slide rails, on the sliding block One end of connection expansion link, the other end edge of the expansion link are stretched perpendicular to the direction of the pipette body.
A kind of 2. pipette according to claim 1, it is characterised in that：Also include controller and lowering or hoisting gear, the control Device and lowering or hoisting gear processed are each provided on the lateral surface of pipette, and the controller is connected with lowering or hoisting gear, the lowering or hoisting gear with Sliding block connects.
A kind of 3. pipette according to claim 2, it is characterised in that：The pipette body is close to the one of liquid relief mouth End is additionally provided with the first level sensor and the second level sensor, second level sensor be located at the first level sensor with Between liquid relief mouth, first level sensor and the second level sensor are connected with controller.
A kind of 4. pipette according to claim 3, it is characterised in that：First level sensor is apart from the liquid relief Three centimetres of mouth, second level sensor is apart from two centimetres of the liquid relief mouth.
A kind of 5. pipette according to claim 1, it is characterised in that：The conduit is that screw thread is removable with pipette body Connection is unloaded, the conduit is to be fixedly connected with rubber cavity.