CN201549101U

CN201549101U - Osmosis demonstration device

Info

Publication number: CN201549101U
Application number: CN2009202535918U
Authority: CN
Inventors: 赵新建
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-18
Filing date: 2009-11-18
Publication date: 2010-08-11
Anticipated expiration: 2019-11-18

Abstract

An osmosis demonstration device comprises a transfer pipette (1) and a main pipe (3) which is connected on the lower end of the transfer pipette, wherein a branch pipe (6) is arranged on one side of the main pipe (3), the bottom end of the main pipe (3) is semispherical, a semitransparent film (5) is fixedly arranged on a semispherical section through a binding line (4), and a float (2) in bright color is further arranged inside the transfer pipette (1). The osmosis demonstration device is simple to operate, and has obvious effect of osmosis, the liquid level in the transfer pipette is fast to ascend, and the demonstration time is short, otherwise, the rising position of the liquid level can be easily observed through the float in bright color.

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, the oral area of long neck funnel is put semi-permeable diaphragm, 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, contain 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, with concentration is that 30% sucrose solution liquid level flushes, 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 by 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 of transfer pipet, connect " 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, fill concentration and be 30% aqueous sucrose solution in " y " shape pipe, 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 the area of this utility model semi-permeable diaphragm is too little, and the speed that osmosis takes place is too slow, and the demonstration overlong time is not easy to class demonstration, in addition, lacks necessary mark, is unfavorable for that the student observes in the classroom.

The utility model content

The purpose of this utility model be long at existing osmosis apparatus for demonstrating complicated operation, demonstration time, observe shortcoming such as difficulty, provide a kind of simple to operate, the demonstration time short, a kind of osmosis apparatus for demonstrating of observing easily.

The purpose of this utility model realizes by following technological means: a kind of osmosis apparatus for demonstrating, include transfer pipet and be connected the person in charge who is provided with its lower end, a side of being responsible for is provided with arm, the described person in charge's bottom is set to semisphere, is set with semi-permeable diaphragm by bounding wire on hemispheric cross section.

Described transfer pipet inside also is provided with the buoy of bright-colored.

Described transfer pipet is provided with scale.

The diameter in hemisphere cross section, described person in charge bottom is set to 5-10 times of predominant tube diameter.

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 liquid level ascending velocity is fast in the transfer pipet, and the demonstration time is short; In addition, the buoy of bright-colored makes the easier observation in position that liquid level rises.

Description of drawings

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

Fig. 2 is user mode figure of the present utility model;

Among the figure, the 1-transfer pipet, the 2-buoy, 3-is responsible for, 4-bounding wire, 5-semi-permeable diaphragm, 6-arm.

Embodiment

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

A kind of osmosis apparatus for demonstrating as shown in Figure 1 and Figure 2, include transfer pipet 1 and be connected the person in charge 3 who is provided with its lower end, a side of the person in charge 3 is provided with arm 6, and the described person in charge's 3 bottom is set to semisphere, is set with semi-permeable diaphragm 5 by bounding wire 4 on hemispheric cross section.The 5-10 that the diameter in hemisphere cross section, the described person in charge 3 bottom is set to be responsible for 3 diameters doubly.Be provided with like this, more large-area semi-permeable diaphragm 5 can strengthen chemosmotic demonstration effect greatly, and the liquid level ascending velocity is accelerated in the transfer pipet 1, and the demonstration time shortens.

Described transfer pipet 1 inside also is provided with the buoy 2 of bright-colored.The easier observation in position that the buoy 2 of bright-colored can make liquid level rise is set like this.

Described transfer pipet 1 is provided with scale.Be provided with like this, the speed that liquid level rises can quantize comparison, has strengthened the science and the preciseness of demonstration.

In a word, the utility model provides a kind of osmosis apparatus for demonstrating short, that observe easily of a kind of simple to operate, demonstration time.

Claims

1. osmosis apparatus for demonstrating, include transfer pipet (1) and be connected the person in charge (3) who is provided with its lower end, a side of being responsible for (3) is provided with arm (6), it is characterized in that: the described person in charge's (3) bottom is set to semisphere, is set with semi-permeable diaphragm (5) by bounding wire (4) on hemispheric cross section.

2. a kind of osmosis apparatus for demonstrating according to claim 1 is characterized in that: the inner buoy (2) that also is provided with bright-colored of described transfer pipet (1).

3. a kind of osmosis apparatus for demonstrating according to claim 1 is characterized in that: described transfer pipet (1) is provided with scale.

4. a kind of osmosis apparatus for demonstrating according to claim 1 is characterized in that: the diameter in hemisphere cross section, the described person in charge (3) bottom is set to 5-10 times of the person in charge's (3) diameter.