CN206002166U - A kind of convenient for taking liquid joins the volumetric flask of liquid - Google Patents

Abstract

The utility model relates to the field of chemical experiment equipment, in particular to a volumetric bottle which is convenient for taking liquid and mixing liquid. The bottle body of the volumetric flask is a pear-shaped flat bottom with a hollow thin neck, and the body of the volumetric flask is closed except for the opening on the top surface. The body of the volumetric flask is made of glass material, and the outside of the neck of the volumetric flask The curved wall is provided with a vertical scale line; the narrow-mouthed tube is a hollow cylinder device with openings on the top and bottom surfaces, the narrow-mouthed tube is made of glass material, and the inner diameter of the narrow-mouthed tube is the top of the neck of the volumetric flask. 1/3 to 1/2 of the inner diameter of the surface opening, and the top opening of the narrow-mouthed tube is provided with a detachable narrow-mouthed plug that fits with the top opening. The utility model not only can be conveniently used by experimenters to configure solutions with different volumes, the configuration is accurate, and the experimental error is small, but also a small amount of remaining liquid in the volumetric flask can be absorbed cleanly to save chemical resources.

Description

A kind of convenient for taking liquid joins the volumetric flask of liquid

【Technical field】

This utility model is related to chemical experiment clothing arts, joins the volumetric flask of liquid more particularly to a kind of convenient for taking liquid.

【Background technology】

The volumetric flask volume that laboratory uses is certain, can only prepare the solution of fixed volume, want to configure other volumes Solution, experimenter can only change volumetric flask, and when there is not much left for the solution in volumetric flask, pipet need to be reached by experimenter Volumetric flask bottom is drawn, and now the scale of pipet can arrive below volumetric flask bottleneck, not only takes liquid inconvenient, and easily affects Reading, and then easily produce experimental error.

【Utility model content】

The technical problems to be solved in the utility model is the volumetric flask providing a kind of convenient for taking liquid to join liquid, and it can easily supply Laboratory technician is used for configuring the different solution of volume, and accurately, experimental error is little, and when the solution in volumetric flask, there is not much left in addition for configuration When, it can easily not only take liquid convenient for laboratory technician drawing the solution in volumetric flask, and can will be a small amount of in volumetric flask Remaining liq draws clean, saving chemical resource.

In order to achieve the above object, the technical scheme of this utility model offer is：A kind of convenient for taking liquid joins the volumetric flask of liquid, It is characterized in that it includes volumetric flask body, graduation mark, thin mouth pipe, thin mouth pipe close, lifter plate, female thread, piston；Described capacity Bottle body be in the flat shape of hollow thin neck pyriform, and volumetric flask body except top surface opening in addition to other faces all close, volumetric flask body by Glass material is made, and the cervical region outside curve wall of volumetric flask body is provided with vertical graduation mark；Described thin mouth pipe be in top surface and The hollow cylinder device of the equal opening in bottom surface, thin mouth pipe is made up of glass material, and the internal diameter of thin mouth pipe is volumetric flask body cervical region top The 1/3～1/2 of internal diameter at the opening of face, is provided with the top surface opening of thin mouth pipe and is adapted to its top surface opening and dismountable thin mouth pipe Plug, thin mouth pipe close is ground glass stopper, and the outside curve wall bottom end fixed jacket of thin mouth pipe has one piece of piston, and piston is in flat Cylindric, piston is made up of glass material, and the outside bottom surface of piston is concordant with the bottom surface of thin mouth pipe, and opening on thin mouth ttom of pipe face Mouthful it is exposed on the bottom surface of piston, piston is in left and right and mutually symmetry shape in front and back with regard to the vertical centrage of volumetric flask body, The top surface circle external diameter of piston is slightly less than the internal diameter at volumetric flask body top surface opening, and piston can be from the top surface opening of volumetric flask body Place's horizontal positioned enters in the top bottleneck of volumetric flask body, and piston freely up and down can be slided along the top bottleneck of volumetric flask body Dynamic；Described lifter plate is in horizontal cuboid strip, offers insertion to the circle of lifter plate bottom surface at the end face center of lifter plate Column screwed hole, the inner vertical wall surface of screwed hole offers female thread, the outside of thin mouth pipe from top to bottom along wall circumference External screw thread is offered from top to bottom along curved wall, external screw thread up extends to the bottle mouth position of volumetric flask body, outer spiral shell on curved wall Stricture of vagina down extends to the top surface of piston, and lifter plate passes through to be enclosed within the outside curve wall of thin mouth pipe, on lifter plate outside its screwed hole The female thread of screw thread in the hole is meshed with the external screw thread on thin mouth pipe outside curve wall, and during horizontal circumferential rotation type lifter plate, rises Fall plate can move up and down along thin mouth pipe outside curve wall.

The beneficial effects of the utility model are：This utility model can easily be used for configuring different molten of volume for laboratory technician Liquid, accurately, experimental error is little for configuration, and in addition when there is not much left for the solution in volumetric flask, it can easily be inhaled for laboratory technician The solution tried to please in measuring bottle, not only takes liquid convenient, and can draw a small amount of remaining liq in volumetric flask clean, saves chemistry Resource.

【Brief description】

With reference to the accompanying drawings and examples this utility model is further illustrated.

Fig. 1 is overall main structure diagram of the present utility model.

Fig. 2 is the vertical view mplifying structure schematic diagram of this utility model lifter plate.

Fig. 3, Fig. 4 are view when this utility model uses.

Wherein, 1- volumetric flask body, 2- graduation mark, 3- thin mouth pipe, 4- thin mouth pipe close, 5- lifter plate, 501- female thread, 6- Piston.

【Specific embodiment】

In example shown in the drawings, as shown in Figure 1 and Figure 2, a kind of convenient for taking liquid join liquid volumetric flask it is characterised in that It includes volumetric flask body, graduation mark, thin mouth pipe, thin mouth pipe close, lifter plate, female thread, piston；During described volumetric flask body is in The empty thin flat shape of neck pyriform, and volumetric flask body other faces except top surface opening in addition to all close, volumetric flask body is by glass material system Become, and the cervical region outside curve wall of volumetric flask body is provided with vertical graduation mark；Described thin mouth pipe is in the equal opening of top surface and bottom surface Hollow cylinder device, thin mouth pipe is made up of glass material, the internal diameter of thin mouth pipe be at volumetric flask body cervical region top surface opening in The 1/3～1/2 of footpath, is provided with the top surface opening of thin mouth pipe and is adapted to its top surface opening and dismountable thin mouth pipe close, thin mouth pipe Fill in for ground glass stopper, the outside curve wall bottom end fixed jacket of thin mouth pipe has one piece of piston, piston is in flattened cylindrical shape, lives Plug is made up of glass material, and the outside bottom surface of piston is concordant with the bottom surface of thin mouth pipe, and the opening on thin mouth ttom of pipe face is exposed at On the bottom surface of piston, piston is in left and right and mutually symmetry shape in front and back with regard to the vertical centrage of volumetric flask body, the top of piston Face circle external diameter is slightly less than the internal diameter at volumetric flask body top surface opening, and piston level can be put at the top surface opening of volumetric flask body Insert in the top bottleneck of volumetric flask body, and piston freely up and down can slide along the top bottleneck of volumetric flask body；Described liter Fall plate is in horizontal cuboid strip, offers insertion to the cylindrical screw of lifter plate bottom surface at the end face center of lifter plate Hole, the inner vertical wall surface of screwed hole offers female thread from top to bottom along wall circumference, on the outside curve wall of thin mouth pipe Offer external screw thread along curved wall from top to bottom, external screw thread up extends to the bottle mouth position of volumetric flask body, external screw thread is toward downward Extend the top surface of piston, lifter plate passes through to be enclosed within the outside curve wall of thin mouth pipe, in lifter plate upper screwed hole outside its screwed hole Female thread be meshed with the external screw thread on thin mouth pipe outside curve wall, and during horizontal circumferential rotation type lifter plate, lifter plate energy edge Thin mouth pipe outside curve wall moves up and down.

During using this utility model, when laboratory technician needs the solution configuring certain volume in volumetric flask, laboratory technician can First to pour in volumetric flask by solution by instruments such as beaker, pipets, laboratory technician observes the scale at capacity neck part simultaneously Line, solution to be added roughly close to the exact volume value needing when, stop liquid feeding, then laboratory technician is by the work at thin mouth ttom of pipe end Plug stretches in volumetric flask at top surface opening by volumetric flask body cervical region, needs to configure molten up to the bottom surface of piston and laboratory technician The exact volume value corresponding position of liquid, then the lifter plate on the thin mouth pipe of laboratory technician's rotation, makes lifter plate glide, until lifter plate Bottom surface just props up the top surface (see Fig. 3) of volumetric flask body cervical region, and now piston is fixed by lifter plate, and then laboratory technician can be led to Cross the instruments such as dropper the solution in volumetric flask is titrated at the exact volume value needed for laboratory technician, in titration, in volumetric flask Liquid level concave meniscus when just contacting concordant with the bottom surface of piston, now the liquor capacity in volumetric flask is joined needed for being laboratory technician The volume put, relative capacity bottle configures the traditional method of solution, by the use of the bottom surface of piston as the plane of reference so that the configuration of solution More accurate, reduce the experimental error of solution allocation.Additionally, when there is not much left for the solution in volumetric flask, laboratory technician is permissible Directly the piston at thin mouth ttom of pipe end is stretched in a small amount of surplus solution of volumetric flask bottom, and pass through rotation and lifting plate, make lifting The top surface of volumetric flask body cervical region is propped up (see Fig. 4) by the bottom surface of plate, so that piston is fixed, and then glue head can be dripped by laboratory technician Pipe is directed at the top surface opening of thin mouth pipe, and handss are pinched at the glue head cavity of glue head dropper, because the internal diameter of thin mouth pipe is volumetric flask bottle The 1/3～1/2 of internal diameter at body cervical region top surface opening, using capillarity principle (i.e. liquid inside thin tube-like object, due to Cohesiveness and the difference of adhesive force, can overcome centrifugal force to rise), can will remain lacking in volumetric flask easily and fast Quantity of fluid takes out, and saves chemical resource.

Claims (1)

1. A volumetric flask that is convenient to take liquid and dosing is characterized in that it comprises a volumetric flask body, a scale mark, a thin-mouthed tube, a narrow-mouthed pipe plug, a lifting plate, an internal thread, and a piston; the volumetric flask body is in the shape of Hollow thin neck pear-shaped flat bottom, and the body of the volumetric flask is closed except for the opening on the top surface, the body of the volumetric flask is made of glass material, and the outer curved wall of the neck of the volumetric flask body is provided with vertical scales line; the thin-mouthed tube is a hollow cylinder device with openings on both the top surface and the bottom surface, the narrow-mouthed tube is made of glass material, and the inner diameter of the thin-mouthed tube is 1/3 of the inner diameter of the opening on the top surface of the neck of the volumetric flask ~1/2, the top opening of the narrow-mouthed tube is provided with a detachable thin-mouthed plug that fits with the top opening. There is a piston in the fixed jacket. The piston is flat cylindrical. The piston is made of glass. The vertical center line of the bottle body is symmetrical to each other from left to right and front to back. The outer diameter of the top circle of the piston is slightly smaller than the inner diameter of the top opening of the volumetric bottle body. Put it into the top bottleneck of the volumetric flask body, and the piston can freely slide up and down along the top bottleneck of the volumetric flask body; the lifting plate is in the shape of a horizontal rectangular parallelepiped, and the center of the top surface of the lifting plate is opened with a The cylindrical threaded hole on the bottom surface, the inner vertical wall of the threaded hole is provided with internal threads from top to bottom along the circumference of the wall, and the outer curved wall of the narrow-mouthed pipe is provided with external threads from top to bottom along the curved wall, and the external threads go to the bottom. Extend upward to the bottle mouth of the volumetric flask body, the external thread extends downward to the top surface of the piston, the lifting plate is overlaid on the outer curved wall of the narrow-mouth tube through its threaded hole, and the internal thread in the threaded hole on the lifting plate is in line with the The external threads on the outer curved surface wall of the thin-mouthed tube are engaged, and when the lifting plate is rotated horizontally for a full circle, the lifting plate can move up and down along the outer curved surface wall of the narrow-mouthed tube.