CN202189487U

CN202189487U - Osmosis demonstration apparatus

Info

Publication number: CN202189487U
Application number: CN2011203053248U
Authority: CN
Inventors: 王德健
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-11
Filing date: 2011-08-11
Publication date: 2012-04-11
Anticipated expiration: 2021-08-11

Abstract

Provided is an osmosis demonstration apparatus, comprising a base (5), above which is provided a U-shaped pipe; left and right sides are both provided with a scale pipe (3) and a tunnel (4) which are connected through the U-shaped pipe; the bottoms of the scale pipes (3) are provided with switches (4). The middle section of the U-shaped pipe is also provided with an impermeable membrane (6) and a semipermeable membrane (7); the external part of the U-shaped pipe is provided with a handle for controlling the swing of the impermeable membrane (6) and the semipermeable membrane (7). A cross section diameter of a scale pipe (3) on one side is 5-10 times a cross section diameter of a scale pipe (3) on the other side. The osmosis demonstration apparatus has the advantages of simple operation, obvious osmosis effects, accurate observation results, short demonstration time and various demonstration functions; brilliant color buoys provide more convenience for observation.

Description

A kind of osmosis apparatus for demonstrating

Technical field

The utility model relates to a kind of technical field of high school biology teaching aid, is specifically related to a kind of osmosis apparatus for demonstrating.

Background technology

In the bioconversion medium, often do biomembranous chemosmotic experiment now, this experiment can also be used for many fields such as medical science, agricultural and industry manufacturing.In biology laboratory or classroom instruction, the funnel and the beaker that often adopt long-neck to stand upside down put semi-permeable diaphragm with the oral area of long neck funnel; In the bucket body of long neck funnel, fill concentration and be 30% sucrose solution, its liquid level can stretch into 1 centimetre of neck, in beaker, contains supernatant water; Long neck funnel is inverted in the beaker; And make the water surface in the beaker not have long-neck to fall the bucket body portion of funnel, be that 30% sucrose solution liquid level flushes with concentration, because there are concentration difference in the downside of semi-permeable diaphragm and the upside of semi-permeable diaphragm; Clear water permeates in bucket body, and the liquid level in the bucket body rises.At this moment, can observe the amount of rising through its neck, just clear water sees through the amount of semi-permeable diaphragm.This experimental provision, though mechanism is simple,, inconvenient operation, the student is difficult for grasping, and it is slow that experimental result draws speed, and the difficult observation of the rising of the water surface, and it is bad to be used for the class demonstration effect.

The Chinese patent publication number is CN200998669; The utility model patent instructions that open day is on January 2nd, 2008 discloses a kind of " simple and easy permeability test pipe "; This utility model is made up of transfer pipet, connects " y " shape pipe in the lower end of transfer pipet, and the tube chamber of transfer pipet is connected with the tube chamber of " y " shape pipe; Semi-permeable diaphragm on suit on the end opening of " y " shape pipe; And fix with bounding wire, in " y " shape pipe, fill concentration and be 30% aqueous sucrose solution, stifled on the side pipe mouth of " y " shape pipe have a rubber plug.This simple and easy permeability test pipe, not only simple in structure, and since little, the structure of volume be fixed as one, so make more convenient to operate and be easy to carry.But this utility model lacks necessary mark, be unfavorable for that the student observes in the classroom, and the effect of observation is more single, is unfavorable for that the student understands chemosmotic occurring principle on the whole.

The utility model content

The purpose of the utility model be single to existing simple and easy permeability test pipe demonstration DeGrain, observing effect, be unfavorable for deficiency such as students understand, a kind of osmosis apparatus for demonstrating that effect is obviously clear and definite, observing effect is various, the student understands principle easily of demonstrating is provided.

The purpose of the utility model realizes through following technological means: a kind of osmosis apparatus for demonstrating; Include base; The U type pipe of placing above the base, and through each graduated tube and funnel of one about U type pipe connection setting, the bottom of graduated tube also is provided with switch; The stage casing of described U type pipe also is provided with impermeable membrane and semi-permeable diaphragm; Also be provided with the handle of control impermeable membrane and semi-permeable diaphragm swing in the outside of U type pipe, said about each graduated tube of one, the diameter of section of a side graduated tube is set to 5-10 times of diameter of section of opposite side graduated tube.

Compared with prior art the utlity model has following tangible advantage: this osmosis apparatus for demonstrating is simple to operate, and the osmosis effect is obvious, and the result of observation is very accurate; It is shorter to demonstrate the used time; Demo function is various, and, be convenient to more observe through the buoy of bright-colored.The utility model is very easy to be easy to accept classroom instruction knowledge by the students understand principle on the whole.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Among the figure, 1-funnel, 2-buoy, 3-graduated tube, 4-switch, 5-base, 6-impermeable membrane, 7-semi-permeable diaphragm.

Embodiment

Below in conjunction with description of drawings and embodiment the utility model is done further to describe in detail:

A kind of osmosis apparatus for demonstrating as shown in Figure 1; Include base 5; The U type pipe of placing above the base 5, and through each one graduated tube 3 and funnel 1 about U type pipe connection setting, the bottom of graduated tube 3 also is provided with switch 4; The stage casing of described U type pipe also is provided with impermeable membrane 6 and semi-permeable diaphragm 7, also is provided with the handle of control impermeable membrane 6 and semi-permeable diaphragm 7 swings in the outside of U type pipe.The utility model can at first select impermeable membrane 6 to use when concrete the use,, has contained clear water in the funnel 1 of an end that is; Contained certain density sucrose solution in the funnel 1 of the other end, opened the switch 4 at two ends then, after observation a period of time, can find; The liquid level at two ends can not produce any variation, then, selects to use instead semi-permeable diaphragm 7 through the swing of handle; And, through handle impermeable membrane 6 swing is removed, observe a period of time again after; Can find, contain liquid level in the graduated tube 3 of sucrose solution, promptly observe chemosmotic generation slowly rising.After all experiment is finished, can also semi-permeable diaphragm 7 also be swung and remove, the graduated tube 3 at two ends is linked up fully, and soon, the liquid level at two ends can be equal fully.The utility model is very easy to be easy to accept classroom instruction knowledge by the students understand principle on the whole.

About said the diameter of section of each graduated tube 3, one side graduated tube 3 of one be set to opposite side graduated tube 3 diameter of section 5-10 doubly.Be provided with like this, this osmosis apparatus for demonstrating can strengthen the chemosmotic effect of pattern through the graduated tube 3 of both sides different volumes; During concrete the use, can in the graduated tube 3 of the bigger side in cross section, place the lower liquid of concentration, in the less graduated tube 3 in cross section, place the higher liquid of concentration; The middle use semi-permeable diaphragm 7 of selecting; Rise thereby can observe liquid level faster, and then understand chemosmotic principle, improve the effect of classroom instruction and study.

The inside of described graduated tube 3 also is provided with buoy 2.Be provided with like this, strengthened the observing effect of the utility model, buoy 2 can be set to have foam or the plastics of bright-colored etc. and process.

In a word, the utility model provide a kind of simple to operate, observe osmosis apparatus for demonstrating clear and definite, that the demonstration time is short.The above; Be merely a part of embodiment of the utility model; The protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.

Claims

1. osmosis apparatus for demonstrating; Include base (5); The U type pipe of placing above the base (5), and through each graduated tube (3) and funnel (1) of one about U type pipe connection setting, the bottom of graduated tube (3) also is provided with switch (4); The stage casing of described U type pipe also is provided with impermeable membrane (6) and semi-permeable diaphragm (7); Also be provided with the handle of control impermeable membrane (6) and semi-permeable diaphragm (7) swing in the outside of U type pipe, it is characterized in that: each graduated tube (3) of one about said, the diameter of section of a side graduated tube (3) are set to 5-10 times of diameter of section of opposite side graduated tube (3).

2. a kind of osmosis apparatus for demonstrating according to claim 1 is characterized in that: the inside of described graduated tube (3) also is provided with buoy (2).