CN202542825U

CN202542825U - Dropping funnel

Info

Publication number: CN202542825U
Application number: CN2012200602303U
Authority: CN
Inventors: 赵华绒; 王玲; 王昱丹; 孟祥武; 王明飞; 马爱珍
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2012-02-23
Filing date: 2012-02-23
Publication date: 2012-11-21
Anticipated expiration: 2022-02-23

Abstract

The utility model discloses a dropping funnel. It includes inner conical grinding mouth, main pipe, piston, outer conical grinding mouth, branch pipe and ground plug, inner conical grinding mouth, main pipe, piston, outer conical grinding mouth branch pipe are connected in sequence, inner conical grinding mouth The mouth is connected with the ground plug, and the ground plug is provided with a vent hole matched with the inner tapered ground vent hole. Compared with the prior art, the utility model has the beneficial effects: 1) a glass outer conical grinding mouth is designed between the main pipe and the branch pipe, and there is no need to use rubber stoppers to fix the dropping funnel; 2) the outer conical grinding mouth The interface is connected with a branch pipe of appropriate length, which can be inserted below the liquid surface, so that the dripped liquid and the reaction liquid can be mixed evenly, which can reduce the volatilization of the dripped liquid in the heating system, thereby improving the yield. Simple structure, convenient operation, and low production cost; 3) The outer conical ground interface of the utility model is designed as a universal interface, which is convenient to use; 4) There is a vent hole at the ground plug and the inner conical ground plug, which can make the dripping liquid under normal pressure and decompression Both can be used below.

Description

A kind of tap funnel

Technical field

The utility model relates to funnel, relates in particular to a kind of tap funnel.

Background technology

Dropping is in the organic synthesis process, liquid reactants or reactant solution controlledly to be joined a basic operation in the reaction through tap funnel.Common tap funnel is divided into two kinds; A kind of main body pipe and arm of only comprising usually; In use, need after the arm place uses soft rubber ball to wait to be fixed on the flask, to drip, the use of soft rubber ball or other stoppers exists and is prone to pollute, be prone to deficiencies such as aging; Another kind is main body pipe and the arm that has outer grinding port, and its arm can not insert below the reaction liquid level, in the experiment that the limit heating edge drips, often causes the volatilization of reactant liquor, brings inconvenience for experiment and operation.

Summary of the invention

The purpose of the utility model is the deficiency that overcomes prior art, and a kind of tap funnel is provided.

Tap funnel comprises inner conical ground, main body pipe, piston, male-tapered ground, arm and grinding port plug; Inner conical ground, main body pipe, piston, male-tapered ground, arm link to each other in order; Be placed with grinding port plug on the inner conical ground, on grinding port plug, be provided with the air extractor vent that matches with inner conical ground air extractor vent.

The beneficial effect that the utility model compared with prior art has:

1) design one glass male-tapered ground between main body pipe and the arm needn't re-use soft rubber ball etc. and fix tap funnel.

2) male-tapered ground interface connects the arm of an appropriate length, can insert below the liquid level, and the liquid and the reactant liquor that are added dropwise to are mixed, and can reduce the volatilization that is added dropwise to liquid in the heating systems, and yield structure is simple, easy to operate, productive costs is low thereby improve.

3) the male-tapered ground Interface design of the utility model is general purpose interface, and is easy-to-use.

4) grinding port plug and inner conical grinding port plug place are equipped with air extractor vent, and dropping liquid all can be used under normal pressure and decompression situation.

Description of drawings

Fig. 1 is the structural representation of tap funnel.

The specific embodiment

As shown in Figure 1; Tap funnel comprises inner conical ground 1, main body pipe 2, piston 3, male-tapered ground 4, arm 5 and grinding port plug 6; Inner conical ground 1, main body pipe 2, piston 3, male-tapered ground 4, arm 5 link to each other in order; Be placed with grinding port plug 6 on the inner conical ground 1, on grinding port plug 6, be provided with the air extractor vent that matches with inner conical ground 1 air extractor vent.

Concrete method of application: closure piston 3, reactant liquor is joined in the main body pipe 2, cover grinding port plug; Use under normal pressure like need, air extractor vent on the then accurate grinding port plug 6 and the air extractor vent on the inner conical grinding port plug 1 align, and communicate with air; Then tap funnel is inserted in the flask, makes male-tapered ground 4 and flask ground leak-tight joint, arm 5 will insert below the reaction liquid level simultaneously; Again piston 3 is opened, thus the task of completion dropping liquid.

Claims

1. A dropping funnel, characterized in that it includes an inner conical grinding mouth (1), a main body tube (2), a piston (3), an outer conical grinding mouth (4), a branch pipe (5) and a grinding mouth plug (6 ), the inner tapered grinding port (1), the main pipe (2), the piston (3), the outer tapered grinding port (4), and the branch pipe (5) are connected in sequence, and the inner tapered grinding port (1) is placed with Grind the mouth plug (6), be provided with air vent on the inner tapered grinding mouth (1), be provided with the air vent that matches with the inner tapered grinding mouth (1) air vent on the grinding mouth plug (6).