CN2055065U - Insulating buchner funnel - Google Patents

Abstract

The utility model discloses an improvement insulating buchner funnel. On the basis of the primary buchner funnel, an outer; containing funnel is additionally arranged. The utility model comprises containing funnels of inner and outer layers, filtering solution is contained in the inner containing funnel, and heat preservation liquid is contained in the outer containing funnel, and consequently, the purpose of heat retaining is achieved.

Description

Insulating buchner funnel

The utility model is a kind of improved Buchner funnel.

In Experiment of Organic Chemistry, for the preparation of organic compound, when especially utilizing recrystallization to purify organic matter, the way that often needs to utilize insulation to filter (promptly filtering while hot) is extracted organic matter.General normal employing ordinary copper quality guarantee temperature funnel normal pressure filters or adopts the Buchner funnel filtration under diminished pressure in experiment.The former is because the normal pressure rate of filtration is slow, and the funnel neck easily stops up, and operation is than bothering and being of little use.Though latter's filtration under diminished pressure, filtering velocity is very fast, exists not to be incubated, and along with the filtrate temperature descends, solute is easy to generate crystallization in the solution in funnel holds bucket, and is difficult for passing through filter screen.The organic matter yield is reduced.

The purpose of this utility model provides a kind of Buchner funnel that attemperator is arranged.

The technical scheme that realizes the utility model purpose is as follows, at the additional again outer bucket in the outside of existing Buchner funnel, makes it to form one and has inside and outside two funnels that hold bucket.The outer bucket bottom is sealing with the outer hand hay cutter of fistulae neck and is connected.In use, when need filter impurity in the solution, splendid attire filter liquide in the content bucket, splendid attire heat insulation liquid (as hot water) in the outer bucket, because the hot body in the outer bucket is encircled the filter liquide in the content bucket, make its temperature be difficult for cooling, the filtrate solute that holds in the bucket is difficult for crystallization, has improved the content of solute in the filtered solution relatively.When need are collected crystalline solid, then can in outer bucket, contain and go into frozen water, the solution cooling is fast, and recrystallization is many, has so just improved organic yield.

Facts have proved that this Buchner funnel that has improved because of having solved insulation (or cooling) problem, thereby has improved organic yield relatively.

Fig. 1 is the longitudinal sectional drawing of insulation Buchner funnel.

Embodiment one, and outside again with addition of an outer bucket that adapts with it 2 according to the shape and the structure of existing Buchner funnel, the neck of outer bucket 2 and fistulae 4 outside is fixing seal and fuses.Make content bucket 1, outer bucket 2, filter plate 3 with holes, fistulae 4 forms an indivisible integral body.

Embodiment two, and inner funnel (existing Buchner funnel), outer bucket are made supporting single-piece respectively, (inner funnel is a raw material with pottery or glass, and raw materials such as outer bucket useful ceramics, glass, metal, plastics are made).Inner funnel is inserted in the outer bucket 2, and the fistulae 4 of inner funnel adopts the socket of software piston with outer bucket 2 bottoms.Make it to form the insulation Buchner funnel of a decomposition.

Claims (1)

1, a kind of insulation Buchner funnel is by holding bucket 1, filter plate with holes 3, and fistulae 4 is formed, and it is characterized in that having inside and outside two to hold bucket, promptly disposes an outer bucket 2 again in the outside of content bucket 1, is sealing outside outer bucket 2 bottoms and fistulae 4 necks and is connected.