CN206515310U - A kind of new base buret device - Google Patents

Abstract

The utility model discloses a kind of new base buret device, it includes iron stand, the iron stand includes bottom plate and the first iron and the second iron that are connected with the bottom plate, first iron is connected by the first iron clamp with graded tube, provided with side pipe mouthful on the side wall close to the lower end of the graded tube, angle valve is connected with the side pipe mouthful, the angle valve is connected by conduit with supplying valve, the supplying valve is connected with supplying bottle outlet at bottom, the supplying bottle is fixed on the second iron by the second iron clamp, the upper end of the supplying bottle is provided with air bleeding valve, the lower end of the graded tube is connected by the first emulsion tube with titration control valve one end, the other end of the titration control valve is connected by the sharp mouth of the second emulsion tube and titration, through hole is provided with the bottle neck side wall close to the sharp mouth of the titration.The utility model is conducive to saving experimentation cost, improves test accuracy, also reduces experiment waste liquid generation, meets the requirement of environmental protection.

Description

A kind of new base buret device

Technical field

The utility model is related to a kind of new base buret device.

Background technology

With the progress of China's science and technology, the support of increasing need of work science data, uses drop in production and living Fixed side

The analysis that formula carries out qualitative, quantitative to sample is particularly important, and existing base buret has easy-to-leak liquid, and titration is eventually Lower end when only

The air column of influence precision is easily left at sharp mouth, nearly terminal drop is whard to control to wait not enough so that the standard of experiment Exactness and accuracy can all be affected；In use, reagent dosage is big, is exposed at for a long time in air and is also easy to produce titrating solution and goes bad The problems such as, cause the generation for producing the problems such as multipair environment of waste liquid is polluted.

Utility model content

One of the present utility model aims to overcome that the deficiencies in the prior art are filled there is provided a kind of new base buret Put, it includes iron stand, and the iron stand includes bottom plate and the first iron and the second iron that are connected with the bottom plate, described First iron is connected by the first iron clamp with graded tube, provided with side pipe mouthful on the side wall close to the lower end of the graded tube, Angle valve is connected with the side pipe mouthful, the angle valve is connected by conduit with supplying valve, and the supplying valve goes out with supplying bottle bottom Mouth connection, the supplying bottle is fixed on the second iron by the second iron clamp, and the upper end of the supplying bottle is provided with air bleeding valve, described The lower end of graded tube is connected by the first emulsion tube with titration control valve one end, and the other end of the titration control valve passes through second Emulsion tube is connected with the sharp mouth of titration, and through hole is provided with the bottle neck side wall close to the sharp mouth of the titration.

In addition, can also have following additional technical feature according to embodiment of the present utility model：

According to one embodiment of the present utility model, the sharp mouth of the titration is the sharp mouth of the ultra-fine microtitres of PVC.

Angle valve with graded tube UNICOM is set in the bottom side of the wall of its graded tube by using existing base buret, Supplying bottle is connected through conduit with the angle valve again through supplying valve, it is possible to achieve supply to titrating solution in graded tube and for a long time During without burette test, the function that supplying bottle realizes sealing preserve is returned into the titrating solution recharge in graded tube.According to titration point The actual conditions of mouth, can set one or more through holes on the bottle neck side wall of the sharp mouth of titration, so can keep away sharp mouth Exempt to form air column, be conducive to improving test accuracy.The technical solution of the utility model had both avoided giving up because producing substantial amounts of reagent Liquid and pollute environment situation occur, also solve the problem of existing base buret has easy-to-leak liquid, meanwhile, emptying Buret afterwards is also convenient for cleaning and preserved, and slows down emulsion tube and titrates the ager process of control valve, saves experimentation cost, receive The beneficial effect that serves multiple.

Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description In become obvious, or by it is of the present utility model practice recognize.

Brief description of the drawings

Of the present utility model above-mentioned and/or additional aspect and advantage will from description of the accompanying drawings below to embodiment is combined Become substantially and be readily appreciated that,

Fig. 1 is a kind of new base buret schematic device；

Fig. 2 is the partial enlarged drawing of Fig. 1 sharp mouth of titration；

Wherein:1. the first iron, 2. first iron clamps, 3. graded tubes, 4. air bleeding valves, 5. supplying bottles, 6. supplying valves, 7. Two iron

Bar, 8. conduits, 9. angle valves, 10. first emulsion tubes, 11. titration control valves, 12. second emulsion tubes, 13. titration points Mouth, 14.

Bottom plate, 15. through holes.

Embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the utility model, and it is not intended that to of the present utility model Limitation.Further illustrate below in conjunction with the accompanying drawings；

A kind of new base buret device is provided in Fig. 1, Fig. 2, it includes iron stand, the iron stand includes bottom plate 14 and the first iron 1 and the second iron 7 that are connected with the bottom plate 14, first iron 1 passes through the first iron clamp 2 and scale Pipe 3 is connected, and provided with side pipe mouthful on the side wall close to the lower end of the graded tube 3, angle valve 9 is connected with the side pipe mouthful, The angle valve 9 is connected by conduit 8 with supplying valve 6, and the supplying valve 6 is connected with the outlet at bottom of supplying bottle 5, the supplying bottle 5 It is fixed on by the second iron clamp on the second iron 7, the upper end of the supplying bottle 5 is provided with air bleeding valve 4, the lower end of the graded tube 3 It is connected by the first emulsion tube 10 with titration control valve 11 one end, the other end of the titration control valve 11 passes through the second emulsion tube 12 are connected with the sharp mouth 13 of titration, and through hole 15 is provided with the bottle neck side wall close to the sharp mouth 13 of the titration.

The sharp mouth 13 of titration is the sharp mouth of the ultra-fine microtitres of PVC.Used here as the sharp mouth of the ultra-fine microtitres of PVC, the sharp mouth is Formed by 2 millimeters of PVC pipe hot-drawns of diameter, the discharge of liquid is about 265 drops/milliliter, finer titration control can be achieved System.In use, the liquid level in supplying bottle 5 can be greater than or equal to the mouth of pipe height of the graded tube, so facilitate standard The flowing of solution.The upper end air bleeding valve 4 of supplying bottle 5 is opened, then opens the angle valve 9 being connected on the side wall of the lower end of graded tube 3, The supplying valve 6 being connected with the bottom of supplying bottle 5 is slowly opened, the standard liquid of storage in supplying bottle 5 is added slowly by conduit 8 Into graded tube 3, after the liquid level in graded tube 3 exceedes zero graduation, angle valve 9, supplying valve 6 and air bleeding valve 4 are closed.

When Z-operation is determined in progress, conical flask is placed first under the sharp mouth 13 of titration, control valve is titrated by pressing and rubbing 11, level of the liquid in the tube is observed in titrating solution outflow, until the lowest part and zero graduation line of the concave meniscus in graded tube 3 are tangent Untill, 2 minutes or so are stood, observation liquid level does not change, and just can carry out burette test.

, can be by feed flow if for a long time without burette test, occurring to go bad to avoid titrating solution from being exposed at for a long time in air 5 people of bottle are positioned below titrating the height and position of sharp mouth 13 to remove, and open the exhaust of angle valve 9 and supplying valve 6 and supplying bottle 5 Valve 4, supplying bottle 5 is returned by the standard liquid in graded tube 3 through the recharge of conduit 8, then is closed angle valve 9 and supplying valve 6 successively and supplied After the air bleeding valve 4 of liquid bottle 5, supplying bottle 5 is continued by the second iron clamp to be placed on the second iron 7, so can be achieved to standard The opposing seal of solution is preserved.Pass through the implementation of above-mentioned technological means so that the utility model not only improves saving experimentation cost, Test accuracy is improved, experiment waste liquid generation is also reduced, meets the requirement of environmental protection.

In the description of this specification, the description of reference term " one embodiment " etc. means to combine the embodiment or example Specific features, structure, material or the feature of description are contained at least one embodiment of the present utility model or example.At this In specification, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.Moreover, description is specific Feature, structure, material or feature can in an appropriate manner be combined in any one or more embodiments or example.To the greatest extent Embodiment of the present utility model has been shown and described in pipe, it will be understood by those skilled in the art that：This is not being departed from In the case of the principle and objective of utility model a variety of change, modification, replacement and modification, this reality can be carried out to these embodiments Limited with new scope by claim and its equivalent.

Claims (2)

1. a kind of new base buret device, it is characterised in that it includes iron stand, the iron stand include bottom plate and with The first iron and the second iron of the bottom plate connection, first iron is connected by the first iron clamp with graded tube, close The side wall of the lower end of the graded tube is connected with angle valve, the angle valve passes through conduit provided with side pipe mouthful on the side pipe mouthful It is connected with supplying valve, the supplying valve is connected with supplying bottle outlet at bottom, the supplying bottle is fixed on second by the second iron clamp On iron, the upper end of the supplying bottle is provided with air bleeding valve, and the lower end of the graded tube passes through the first emulsion tube and titration control valve One end is connected, and the other end of the titration control valve is connected by the sharp mouth of the second emulsion tube and titration, close to the titration point The bottle neck side wall of mouth is provided with through hole.

2. a kind of new base buret device according to claim 1, it is characterised in that the sharp mouth of the titration is PVC The sharp mouth of ultra-fine microtitre.