CN88204759U

CN88204759U - Rotary combined teaching aid with chemical experimental set-up diagram

Info

Publication number: CN88204759U
Application number: CN 88204759
Authority: CN
Inventors: 郭德政
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-04-22
Filing date: 1988-04-22
Publication date: 1988-11-09

Abstract

The utility model discloses a rotary combined teaching aid with chemical experimental set-up diagram formed by two to three concentric circles with different diameters and made of transparent films, paper plates, etc. and a chassis with a window. Each discs is respectively drawn with the chemical experimental basic set-up diagram, such as occurrence, purification, collection, etc.; 180-1600 assembly diagrams can be obtained by appropriate rotation of each discs. The utility model has the advantages that the diagrams are systematical, agile and variable, and can not be influenced by the change of teaching materials. The utility model can not only be used for direct reading but also can be displayed by projection, which overcomes the defects of poor system performance and single diagram of the existing teaching utilized by chart, etc. and is favorable for enlightening the thinking of the students and training the ability of the students to design chemical experimental set-ups and programs.

Description

Rotary combined teaching aid with chemical experimental set-up diagram

The utility model relates to a kind of rotary combinatorial chemistry Experimental equipment, and it is specially adapted to classroom instruction and the student reviews.

Illustration in existing chemical experiment device figure lantern slide or school wall map, the textbook etc., all are single experimental provision and experimental arrangements of expression, review middle school chemical experiment knowledge for teachers ' teaching and student and seem single scattered, lack systematicness, dirigibility and versatility.Use inconvenience, be unfavorable for that the teacher teaches and inspires student's intelligence.

The purpose of this utility model be propose a kind of novel being used to of meter teach, learn purpose chemical experiment device and experimental arrangement combined teaching aid so that utilize in one to two such teaching aid just can be contained in middle school chemical experiment basic device figure.Need only during use and just any one needed experimental provision assembly figure can be displayed by suitable adjustment, thereby overcome patterns such as present use lantern slide or school wall map single scattered and shortage systematicness and dirigibility, be not easy to drawbacks such as teachers ' teaching and student review, to reach the chemical experiment device drawing system, image, intuitively, the pattern flexibility and changeability, neither be subjected to the influence of syllabus and teaching material change, help teachers ' teaching again and inspire student thought, the ability of raising student contrived experiment device and easy to use, save purposes such as teaching and students self study time.

Solution of the present utility model is: utilize transparent film or materials such as plastic sheet, hard paper to make the disk that two or three diameters have nothing in common with each other; All draw respectively according to certain rules on each disk and go up generating means or chemical experiment basic device patterns such as connection (containing purification) device, collection receipts (containing processing) device; Then with these disks with roundel last, big disk under order overlap by the center of circle And with rivet or bolt with its relative fixed or be fixed on the chassis that has " optical window ", when on purpose rotating one of them or two or three disks respectively, appointed pattern is docked on certain position get up and constitutional chemistry experiment basic device assembly figure, thereby realize above-mentioned purpose.

Realization of the present invention is, when these disks are equipped with the chassis with transparent film system as And, promptly can be made into the combined appliance for teaching that can show by means of projector as accompanying drawing 1 teaching usefulness.Disk A, B, the C that the diameter that three (also can be two) that wherein drawing has various chemical experiment basic device figure are made with transparent film has nothing in common with each other cements on metal or wooden, the plastic circle ring 1,2,3 external diameter of annulus and the equal diameters of disk respectively.Roundel A draws to be had various generating means patterns (representing with Ai), middle disk B to draw respectively with big disk C to be connected (containing purifications) and collection receipts (containing processing) are installed pattern (representing with Ri and Ci respectively).The linking point of each experimental provision pattern (being called for short " contact ") is all on concentrically ringed radial direction, A, B, three disks of C are overlapping by up-small and down-big order, be fixed on bolt or rivet on the chassis that sheet metal or wooden laminate, plastic plate make at circle centre position.As long as arbitrarily one or two or three disks of rotation make " contact " butt joint in the pattern, can obtain a width of cloth combination chemical experimental unit figure.In order on projection screen, only to show a width of cloth chemical experiment device figure, on the chassis D that metal or wooden laminate, plastic plate etc. are made, offer a sector notch as " optical window ", allow light see through, remainder nature is covered by wooden laminate etc., and is mixed and disorderly to avoid picture.If be packed with a slice colored transparent film, can make installation drawing have certain background color in " optical window " position.

When adopting the concentric discs of material such as hard paper or plastic sheet, And draws out above-mentioned same pattern, then can be made into for the student and directly consults teaching aid with arbitrary combination, and accompanying drawing 2 is the teaching aids with two (also available three) concentric discs compositions.With rivet with disk A, B at the circle centre position riveted, make two disks can do relatively rotation, when directly rotating disk during use by hand appointed pattern being docked, can form various assembly figure.As: with the A in the accompanying drawing 2. ₁₀B ₁₂The coal carbonization Experimental equipment has just been formed in butt joint.If on the B dish of the teaching aid that three concentric discs are formed, increase by a hollow tubing conductor figure, respectively install directly to be connected on A and the C dish, then the function of the teaching aid be made up of two concentric discs all can be included in interior.

Advantage of the present utility model is: link closely high school chemistry teaching outline and teaching material, but the influence that not changed by teaching material; The installation drawing image is directly perceived, flexible and changeable; Help teacher's instruction or instruction of papil and review chemical experiment device and experimental arrangement; Go out multiple unreasonable or wrong Experimental equipment owing to this combined appliance for teaching is also capable of being combined, thereby can cultivate the student distinguish its just, the ability of mistake, so the present invention also helps the ability that inspires student thought, tap intellectual resources, training and raising student contrived experiment device; Save teaching and self-study time.The utility model is practical, easy to operate, making is easy, cost is low, widely applicable, and Experimental equipment is done suitably to adjust, and can be used for the teaching of universities and colleges, particularly normal colleges and schools again.

Embodiment one:

The combined appliance for teaching that can be used for projection for teaching purpose is an example.As accompanying drawing one, this teaching aid is made of the chassis D of A, B, three concentric discs of C and a band " optical window ", and this concentric discs is all made of transparent film.Circular array is drawn on roundel A A ₁-A ₁₁Totally ten one kinds of generating means patterns, the radius of roundel A is 145mm, and A is cemented in (external radius of wood ring 1 also is 145mm, and inside radius is 136mm) on the wood ring 1; On middle disk B, draw B is arranged ₁-B ₁₁Totally ten one kinds of connections (containing purification) devices pattern, the radius of B disk is 155mm, and the B dish is cemented in (external radius of wood ring 2 is identical with the B radius of circle, and inside radius is 146mm) on the wood ring 2; On big disk C, draw C is arranged ₁-C ₁₄Totally ten four kinds of collection are received (containing processing) device pattern, and the C disc radius is 165 millimeters, and C is cemented in (external diameter of wood ring 3 is identical with the C disk, and inside radius is 156mm) on the wood ring 3; Each installs pattern " contact " all on concentrically ringed radial direction.Also be separately installed with three miniature lever E on wood ring 1,2,3, the width of each wood ring is respectively 8mm.The order of pressing A, B, C is overlapping from top to bottom (because film is transparent, can not influence the sharpness of pattern), circle centre position is fixed by bolts on the chassis D that 335 * 335(mm) wooden laminate makes, by means of the handle on the wood ring, rotation on demand, make " contact " butt joint, can constitute nearly 1600 several assemblies figure (comprising unreasonable or wrong combination).For the ease of on projector, showing, on the D of chassis, open a central angle and be about 35 ° sector notch conduct " optical window " so that allow light see through.During use this teaching aid is placed on the projector, respectively disk A, B, last each appointed pattern of C are threaded onto " optical window " by the miniature lever on the wood ring and locate to make " contact " butt joint, the assembly figure that forms can be projected on the screen.For example: with A ₂, B ₁₁, C ₁₃Locate the butt joint combination at " optical window ", just constituted the laboratory and produced hydrogen sulfide gas and bulk properties experimental provision synoptic diagram thereof.

Embodiment two:

The combined appliance for teaching of using with the student that is made of two concentric discs (also can by 3 disks) is an example.As accompanying drawing 2, it is to be made of two different cardboard disks of diameter.Similar to embodiment one, drawing on two disks respectively has 12 speciogenesis devices and 15 kinds of collection to receive (containing processings) device pattern, with rivet these two concentric discs is being located riveted with one heart.Direct rotating circular disk during use can be formed 180 several composite sets figure (comprising unreasonable or wrong combination).Wherein the big disk diameter is 100mm, and the roundel diameter is 60mm.

Description of drawings:

Fig. 1 is the rotary combined appliance for teaching synoptic diagram that is used for Projection Display.Fan-shaped dotted line is the outline line of chassis " optical window " among the figure; Two broken circles are respectively the rotary motion trace of each device " contact ".

The rotary combined appliance for teaching synoptic diagram that Fig. 2 is made up of two concentric discs.Circle is roundel (being the A dish) wherein, and cylindrical is big disk (being the B dish).

Fig. 3 is middle disk in the accompanying drawing 1 (being the B dish) and set collar synoptic diagram thereof.

Claims

1, a kind of rotary chemical experiment device figure combined appliance for teaching, it is by can counterrotating diameter having nothing in common with each other but the concentric discs that overlaps is formed.It is characterized in that it also comprises a chassis that has optical window, and on each disk, all draw respectively according to certain rules generating means or connection (containing purifications) device are arranged, collection receives (containing processing) and the basic device pattern that belongs to chemical experiment such as installs, when on purpose rotating one of them or two, three disks respectively, make when appointed pattern is docked on certain position on each disk, can be combined into a complete chemical experiment basic device assembly figure.

2, by the described combined appliance for teaching of claim 1, it is characterized in that, the chassis of so-called band optical window is meant by aluminium sheet, the chassis that has a sector notch that materials such as plank are made, its fan-shaped size is as the criterion can hold any assembly figure, indentation, there can be packed with a slice colourful transparent film, also can not embedding, so-called concentric discs is meant with transparent film or plastic sheet, the disk that two or three diameters that hard paper is made have nothing in common with each other, these disks all according to roundlet last, great circle under the order And that overlaps with one heart make relative fixed or be fixed on the chassis at circle centre position, each disk of fixing back only can rotate around the center of circle.

3, by claim 1 and 2 described concentric discs, when disk is fixed on the chassis that has optical window by transparent film Zhi Cheng And, the outer that it is characterized in that each disk all cements on a becket or wood ring, the plastic hoop, be equipped with 2～3 miniature levers respectively on each ring, form assembly figure in the optical window place in order to the given pattern of rotating on each respective circular disks, this assembly figure is available projector Projection Display, and the width of its becket or wood ring, plastic hoop is about 8mm.