CN2064919U

CN2064919U - Observation instrument for teaching experiment demonstration

Info

Publication number: CN2064919U
Application number: CN 90200160
Authority: CN
Inventors: 蓝毓清
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-01-02
Filing date: 1990-01-02
Publication date: 1990-10-31

Abstract

The utility model relates to an observation instrument for the teaching experiment demonstration, comprising four parts of an observation system a storage system, a test tube rack system and a demonstration table system. The utility model is mainly used for solving the problem that the teaching experiment demonstration is poor in visibility caused by the weather of rain or the improper indoor light, so students can not uneasily observe the situation of the experiment. The utility model is the multifunctional and multipurpose observation instrument for the teaching experiment demonstration, and has the advantages of light weight, stable property, high safety, concentrated light, large visibility, convenient carry over, simple use, etc.

Description

Observation instrument for teaching experiment demonstration

The utility model relates to a kind of teaching aid, and particularly experimental demonstration is observed the instrument of usefulness.

Existing teaching and experimental demonstration, particularly chemistry experiment demonstration is all carried out on the dais.Running into rainy weather, when indoor light deficiency or light are not suitable for, often causing the poor visibility of experimental demonstration, the student is quite difficult to experimental observation.Though have at indoor increase light pipe number, in the hope of improving lighting effects, because light do not concentrate, or the influence of reflective effect, the student who sits in the back row observes still relatively difficulty to teacher's experimental demonstration, thereby has influence on teaching effect.

For this reason, the utility model has designed a kind of visibility that can improve the teaching and experimental demonstration observation, makes the student can clearly observe the teaching and experimental demonstration scope of teacher's lecture experiment, thereby improves teaching effect.

The designed teaching and experimental demonstration scope of the utility model is made of observing system, storage system, test tube rack system and Demonstration table system four parts.Now that technical pattern of each system and uses thereof, performance division is as follows:

1. observing system is to constitute core of the present utility model.It is made of light source chamber, light source device chamber, view window, experiment pore and casing, and experiment pore aperture conforms to the test tube diameter.During experimental demonstration, the photoelectric source that turns on the light concentrates on light and demonstrates in the view window, and the student just can be clear that experimental phenomena from view window.

2. storage system also claims storage chamber.Be to constitute, and fuse with observing system by two casings that are located at the observing system both sides.Give a lesson experimental demonstration used instrument and reagent of teacher all can be placed in the storage chamber, opens during demonstration that the removable cover boxboard takes out instrument and reagent gets final product; Demonstration finishes and instrument, reagent can be put back in the storage chamber, covers the removable cover boxboard.Storage system also can be used as the wind sheltering chamber and the lengthening Demonstration table of heat test demonstration.Heat experimental demonstration for needs, spirit lamp can be placed in the storage chamber, can keep out the wind and flameholding do not jumped.But will load onto glass plate this moment with front one side of storage chamber, answers the accent light effect simultaneously, so that the student sees through the sight that windowpane is observed heating.In view of the above, the utility model also can extend to the light pipe two ends of storage chamber.Storage chamber bottom is drilled with aperture, so that draining during flushing.

3. test tube rack system is provided in a side of two small frames at the storage chamber back side, is drilled with aperture on the framework, and pore size conforms to the diameter of used test tube, can hold test tube down, and each pipe support can be plugged 5-10 in test tube, also can make double test tube rack.

4. Demonstration table is made up of observation ward's top board and two blocks of removable cover boxboards.For comprehensive large-scale experiment demonstration, as producing of chlorine, the reductibility experiment of hydrogen, carbon monoxide, carbon, distillation test, acid-base titration test etc., can open the bolt cam support that is located at the outside, storage chamber two ends, the removable cover boxboard opened set level, be bearing on the bolt cam support, with the lengthening Demonstration table.Also be provided with two to three iron prop borehole jacks on the Demonstration table, pore size and iron prop stent diameter match, and can insert the iron prop support and get final product.

For the ease of carrying, a movable portable handle can be set on Demonstration table, when carrying demonstrator, portable handle can be mentioned, the time spent can not keep flat into the portable handle indentation, there.

The demonstrator casing can be made knockdown, also can make all-in-one-piece.

As required, tank material can be made with timber, plastics or metal material.

Because the utility model is provided with special observing system, light intensity is concentrated, bright, visibility is big, thereby make the student can see clearly that the teacher does the sight of experimental demonstration, overcome in teaching the shortcoming that causes the teaching and experimental demonstration weak effect because of rainy weather or indoor light deficiency, improved teaching efficiency.It is firm, safe in utilization that this experimental demonstration scope also has a light weight, is easy to carry, advantage such as easy to operate.

Contrast Fig. 1 to Fig. 5 further describes concrete structure of the present utility model and demonstration effect below.

Fig. 1 is the demonstrator perspective view.

Fig. 2 is the demonstrator diagrammatic cross-section.

Fig. 3 to Fig. 5 is the embodiment synoptic diagram.

Contrast Fig. 1 and Fig. 2 illustrate concrete structure of the present utility model:

(1) is the monnolithic case structure of demonstrator.

(2) be the mouth of putting upside down of movable portable handle, its size can just make portable handle set level, and makes the experiment table top steadily broad.

(3) light chamber table top is used for a playback and shows the experiment test tube.

(4) experimental demonstration pore is used for placing, fixes the demonstration test tube. During teacher's experimental demonstration, reaction tube is inserted into light chamber table top from pore, the student can observe reacting phenomenon in the test tube by means of the indoor bright light of light.

(5) experimental demonstration table top, this table top is higher than the dais, and visibility is big, and being convenient to the teacher will be positioned over explaining operation on the Demonstration table than big reaction vessel, and the student is convenient to observe.

(6) the light tube cover plate is screwed. If daylight fluorescent tube or transparent glass damage, cover plate can be taken off, change and put fluorescent lamp or transparent glass.

(7) loose-leaf is used for connecting the removable cover boxboard.

(8) movable portable handle fixed gap, its size conforms to the portable handle specification. When the removable cover boxboard was covered, this breach is portable handle fixedly, avoided portable handle to vacillate now to the left, now to the right.

(9) removable cover boxboard both can be used as and had lengthened the experimental demonstration platform, can be used as again the storage chamber cover plate.

(10) iron prop pipe box as inserting iron branch usefulness, fixes the iron branch, also can be used as iron stand simultaneously and uses, and can establish 2-3 pipe box on the whole demonstration scope table top, is convenient to the large-scale experiment demonstration and uses.

(11) windowpane, the lecture experiment that has need heat, and can carry out in storage chamber, and load onto glass plate in storage chamber front one side this moment, and the student can observe the sight of heating by windowpane.

(12) movable portable handle can lie in portable handle on the portable handle breach (2) during demonstration, makes Demonstration table steadily broad, when carrying, portable handle can be mentioned.

(13) fluorescent tube, the fluorescent tube back wall is made white, as paints white paint, to improve the brightness in the observation ward.

(14) view window is the window of observation of students experimental phenomena.

(15) light source chamber is made up of glass plate, light pipe, cover plate, casing, indoor structure triangular in shape.

(16) bolt cam support is used for support movable top box plate, with lengthening experimental demonstration platform.

(17) osculum, in the time of in the flushing storage chamber, washings from then on hole are discharged, and avoid ponding to soak instrument.

(18) light power switch.

(19) light source device chamber, all light source devices all are arranged on indoor, and are safe and reliable, for avoiding in the wash water inlet chamber, can indoor coat or fill up on line with rubber, the bottom compartment is sealed.

(20) photoelectric source device chamber removable cover is repaired or the inspection power supply apparatus can be opened cover plate, overhauls.

(21) under-chassis is used to support whole instrument.

(22) fluorescent tube schematic cross-section.

(23) light transmission glass plate has the effect of printing opacity, optical filtering and protection fluorescent tube.

(24) test tube rack is located at the storage chamber back side, can make all-in-one-piecely, also can make knockdownly, and monoblock type and whole demonstrator fuse, and make an one-piece construction by same side panel of casing; Knockdown, the activity of test tube rack can being made, be integral to flexibly connect with box body combinations.The test tube that the teacher does experiment usefulness can be placed on the frame at any time and carries, and difficult inversion is bumped mashed.

Embodiment 1

Fig. 3 produces chlorine experimental demonstration synoptic diagram, the iron prop pipe box is gone in iron stem cutting, on the iron branch, fixedly put sheet asbestos well and fix flask, spirit lamp or coal gas heating arrangement are placed in the storage chamber of demonstrator one side, test tube is inserted the experimental demonstration pore, connect the various piece of experimental provision, the light source that turns on the light, the student can clearly observe experimental phenomena.

Embodiment 2

Fig. 4 is a synoptic diagram of doing distillation test on demonstrator.Two iron stem cutting are gone in two iron prop pipe boxes, on the iron branch, fix experimental provision.For making experiment table top lengthening, the bolt cam support is opened, support the top box plate of opening, Demonstration table has promptly extended.Because demonstrator is placed on the dais, enough height of observation are arranged, can make the student be clear that the demonstration sight that the teacher does.

Embodiment 3

Fig. 5 is a synoptic diagram of doing the acid-base titration test.Portable handle is set level, and Demonstration table is exactly the whole broad table top of a Zhang Ping, and iron prop pipe box on the demonstrator is gone in iron stem cutting, and buret is fixed on the brandreth, can carry out the titration Demonstrator Trials.

Claims

1, a kind of experimental demonstration scope of the usefulness of imparting knowledge to students is characterized in that described experimental demonstration scope is by observing system, storage system, and test tube rack system and Demonstration table system four parts constitute,

1.1 described observing system is to be made of light source chamber [15], light source device chamber [19], view window [14], experiment pore [4] and casing, structure triangular in shape in the light source chamber, and the experiment tube aperture conforms to used test tube diameter,

1.2 described storage system is made up of two casings that are located at the observing system both sides, fuses with observation ward, in case of necessity, casing the place ahead one side is loaded onto glass and is made view window, and the bottom is drilled with aperture,

1.3 described test tube rack system is provided in a side of the small frame at the storage chamber back side, is drilled with aperture on the framework, the size in aperture conforms to the diameter of test tube, can hold test tube down,

1.4 described Demonstration table is made up of observation ward's top board and two blocks of removable cover boxboards, the outside, storage chamber two ends is provided with the bolt cam support, can support the removable cover boxboard of opening, be provided with two to three iron prop borehole jacks with lengthening Demonstration table, Demonstration table, aperture and iron branch size match, and Demonstration table is provided with a movable portable handle, portable handle can be set level during demonstration, when carrying, portable handle can be mentioned.

2,, it is characterized in that the box frame structured material can make with metal, timber, plastic material by the described experimental demonstration scope of claim 1.

3, by the described demonstration scope of claim 1, it is characterized in that the box frame structure can be all-in-one-piece, also can make knockdown.