CN110223585A - A kind of energy variation demonstration device in chemical change - Google Patents

A kind of energy variation demonstration device in chemical change Download PDF

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Publication number
CN110223585A
CN110223585A CN201810268704.5A CN201810268704A CN110223585A CN 110223585 A CN110223585 A CN 110223585A CN 201810268704 A CN201810268704 A CN 201810268704A CN 110223585 A CN110223585 A CN 110223585A
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China
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welded
tube
energy variation
chemical change
socketed
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CN201810268704.5A
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Chinese (zh)
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刘禹宁
赵启博
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刘禹宁
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Priority to CN201810268704.5A priority Critical patent/CN110223585A/en
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09BEDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/24Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for chemistry

Abstract

The invention belongs to teaching equipment technology fields, energy variation demonstration device in especially a kind of chemical change, result observation for energy variation in experiment is unclear, the expensive problem of the larger and previous teaching appliance of energy loss, now propose following scheme, including firm banking, supporting leg is welded on the outer wall of the firm banking two sides of the bottom, rotational connector is socketed on the outer wall of the supporting leg bottom end, universal wheel is rotatably connected on the inner wall of the rotational connector bottom, fixed disk is welded on outer wall at the top of the firm banking, rotation slot is provided on outer wall at the top of the fixed disk, and Rotational Cylindrical is rotatably connected on the inner wall of rotation slot.The present invention can effectively prevent the loss of the heat in chemical reaction, the demonstrating effect for making it possible to demonstration device is more obvious, student can intuitively see that mobile fluid column in the internal motion of U-tube, changes the acceptance level between student to knowledge, improves the school grade of student.

Description

A kind of energy variation demonstration device in chemical change
Technical field
The present invention relates to the energy variation demonstration devices in teaching equipment technology field more particularly to a kind of chemical change.
Background technique
Currently, the energy variation in middle school chemistry reactions change, is usually shown with thermometer, it is also exactly to use temperature Sensor and its corresponding software and hardware rapidly show the temperature change in physics, chemical reaction variation in screen.It is above-mentioned The two can show the energy variation in chemical reaction variation well, but have its insufficient one side.It is shown with thermometer Energy variation, observation is not bad nearby, if but demonstrated on classroom as teacher, allow observation of students, then the student of classroom heel row just shows It is difficult, allow chemical reaction in energy variation knowledge cannot comprehensively show all students, this will make student it Between it is different to the acceptance level of knowledge, certainly will influence whether the achievement of student and in life to the application of chemical knowledge.
Through retrieving, Chinese patent grant number is the patent of CN200920149872.9, discloses a kind of physics, chemical change In energy variation demonstration device include plate, which is characterized in that the flask, bottle stopper, Y-pipe, switch, emulsion tube, glass Pipe, bulb tube etc. constitute the space of a relative closure, the object occurred in beaker under the liquid effects in U-shaped glass tube Reason chemically reacts generated energy variation, can influence the gas or expansion or shrinkage in beaker in flask, and then lead to U-shaped The movement of fluid column in glass tube.Have the disadvantage that the result of energy variation in experiment observes unclear, energy in above-mentioned patent Losing larger and above-mentioned patent not can solve problems, therefore, need the energy variation demonstration device in a kind of chemical change.
Summary of the invention
Result observation based on energy variation in experiment is unclear, the larger and previous teaching appliance of energy loss is expensive The technical issues of, the invention proposes the energy variation demonstration devices in a kind of chemical change.
Energy variation demonstration device in a kind of chemical change proposed by the present invention, including firm banking, the firm banking It is welded with supporting leg on the outer wall of two sides of the bottom, is socketed with rotational connector on the outer wall of the supporting leg bottom end, described turn It is rotatably connected to universal wheel on the inner wall of movement connector bottom, fixed disk, institute are welded on the outer wall at the top of the firm banking It states and is provided with rotation slot on the outer wall at the top of fixed disk, and be rotatably connected to Rotational Cylindrical on the inner wall of rotation slot, the rotation slot It is plugged with the equidistant fixed cylinder being distributed in a ring on inner wall, is welded with reinforcement on the outer wall of two fixed cylinder opposite sides Cross bar is provided with internal screw thread on the inner wall at the top of the fixed cylinder, and is threaded with threaded post on the inner wall of internal screw thread, the spiral shell It is welded with the equidistant rotational handle being distributed in a ring on the outer wall of line column, is welded with storing on the outer wall at the top of the fixed cylinder Cabinet is bonded with thermal insulative board on the outer wall of the storing top of the box, is bolted in the top exterior walls of the thermal insulative board There is workbench, the two sides in the bench-top middle position are welded with supporting table, the outer wall at the top of two supporting tables On be placed with beaker, the inside of the beaker, which is placed on the inner wall at the top of flask flask, is plugged with sealing-plug, and sealing-plug Inner wall on be plugged with hard conduit, the top of the hard conduit is welded with three-way connection, the outer wall of the bench-top On be provided with experimental box body, and experimental box body is socketed in the outside of flask and beaker, the one end of the three-way connection far from flask It is welded with emulsion tube, the emulsion tube is welded with adapter far from one end of three-way connection, on the outer wall at the top of the adapter Connection plug is connected with by conduit.
Preferably, it is welded with hold-down support on the outer wall of the bench-top two sides, and outer at the top of hold-down support It is rotatably connected to locking rod on wall, rubber bush is socketed on one end outer wall of locking rod, is welded on the other end outer wall of locking rod It is connected to briquetting, thermal insulation cloche is placed on the outer wall of bench-top, is welded on the outer wall of thermal insulation cloche two sides solid Determine ear mount, briquetting is pressed in the top exterior walls of fixed ear base, and residual temperature collecting hood is socketed on the outer wall of thermal insulation cloche, and residual temperature is received Collect and be welded with the residual temperature recovery tube equidistantly distributed in the top exterior walls of cover, is provided with and equidistantly distributes on the outer wall of workbench bottom Circular hole, be welded with fixing hoop on the inner wall of circular hole.
Preferably, the plan view shape of the rotation slot is circular ring shape, and is bolted on the outer wall at the top of fixed disk Have limit plate, limit plate is covered on the top of rotation slot, and limit plate is socketed on the outer wall of fixed cylinder, limit plate and fixed cylinder it Between formed rotation connection.
Preferably, the middle position of storing cabinet side outer wall is welded with fixed block, and the side outer wall of fixed block On be provided with rotation axis, be welded with moving handle on the side outer wall of rotation axis, the shape of moving handle is snakelike.
Preferably, it is provided with equidistant pull slot on the outer wall of storing cabinet side, and is welded on the inner wall of pull slot There is fixing rib, is rolled on the outer wall at the top of fixing rib and be connected with drawing box, be welded with pull ring on the outer wall of the side of drawing box.
Preferably, the first bulb tube, and the outer wall of the first spherical bottom of the tube are welded on the outer wall of the connection plug bottom On be welded with U-tube, the inside of U-tube is contained with mobile fluid column, is welded with support rail on the outer wall of U-tube opposite side, Scale strip is provided on the outer wall of support rail bottom.
Preferably, it is welded with support frame on the outer wall of the U-tube bottom, and passes through bolt on the side outer wall of support frame It is connected with level meter, the second bulb tube is welded on the outer wall at the top of U-tube.
Preferably, filter is welded on the outer wall at the top of second bulb tube, and the inside of filter is filled with saturating Air filter moisture film is welded with pressure gauge by gas-guide tube on the outer wall of filter top.
Preferably, unidirectional air inlet pipe, and the outer wall of one-way air inlet bottom of the tube are welded in the bottom outer wall of the connection plug On be welded with blowing nozzle, the outside of blowing nozzle is socketed with balloon.
Preferably, rotation connection is formed between the fixed cylinder and firm banking, and spiral shell is formed between fixed cylinder and threaded post Line connection, forms relative motion between fixed cylinder and threaded post.
Having the beneficial effect that in the present invention
1, the experiment isolation cover and residual temperature recovery tube for improving setting can effectively prevent the loss of the heat in chemical reaction, The demonstrating effect for making it possible to demonstration device is more obvious.
2, by the U-tube of setting, so that mobile fluid column is in the inside of U-tube since heat is from the note of U-tube one end Enter, make mobile fluid column mobile in the inside of U-tube, student can intuitively see mobile fluid column in the internal motion of U-tube, always Teacher can then be converted by temperature of the graduated scale to chemical reaction.
3, by the unidirectional air inlet pipe of setting and balloon, student can also be allowed intuitively to observe the energy in chemical reaction Variation, to change the acceptance level between student to knowledge, improves the school grade of student.
4, by the threeway heat collector of setting, the chemical reaction energy of multiple beakers and flask interior can be received Collection, forms relatively closed space, by the pressure gauge of setting, covers the other end in U-tube, can be to mobile fluid column in U-tube Internal pressure measures, and carries out the demonstration of protrusion property to the energy in chemical reaction in different ways.
Detailed description of the invention
Fig. 1 is the Working table structure schematic diagram of the energy variation demonstration device in a kind of chemical change proposed by the present invention;
Fig. 2 is the thermal insulation cloche structural schematic diagram of the energy variation demonstration device in a kind of chemical change proposed by the present invention;
Fig. 3 is the beaker and flask structural schematic diagram of the energy variation demonstration device in a kind of chemical change proposed by the present invention;
Fig. 4 is the U-tube structural schematic diagram of the energy variation demonstration device in a kind of chemical change proposed by the present invention;
Fig. 5 is the unidirectional air inlet pipe structural schematic diagram of the energy variation demonstration device in a kind of chemical change proposed by the present invention.
In figure: 1 firm banking, 2 supporting legs, 3 rotational connectors, 4 universal wheels, 5 fixed disks, 6 Rotational Cylindricals, 7 limit plates, 8 Cross bar, 10 threaded posts, 11 rotational handles, 12 storing cabinets, 13 thermal insulative boards, 14 workbench, 15 fixing ribs, 16 are reinforced in fixed cylinder, 9 Drawing box, 17 fixed blocks, 18 rotation axis, 19 moving handles, 20 thermal insulation cloches, 21 hold-down supports, 22 locking rods, 23 residual temperatures are received Collect cover, 24 residual temperature recovery tubes, 25 fixing hoops, 26 experimental box bodies, 27 supporting tables, 28 beakers, 29 flasks, 30 three-way connections, 31 Adapter, 32 emulsion tubes, 33 connection plugs, 34 first bulb tubes, 35 mobile fluid columns, 36 support frames, 37 scale strips, 38 second spherical shapes Pipe, 39 U-tubes, 40 filters, 41, pressure gauge, 42 unidirectional air inlet pipes, 43 blowing nozzles, 44 balloons.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-5, the energy variation demonstration device in a kind of chemical change, including firm banking 1,1 bottom of firm banking It is welded with supporting leg 2 on the outer wall of two sides, rotational connector 3, rotational connector 3 are socketed on the outer wall of 2 bottom end of supporting leg It is rotatably connected to universal wheel 4 on the inner wall of bottom, fixed disk 5,5 top of fixed disk are welded on the outer wall at 1 top of firm banking Outer wall on be provided with rotation slot, and be rotatably connected to Rotational Cylindrical 6 on the inner wall of rotation slot, be plugged on the inner wall of rotation slot equidistant From the fixed cylinder 8 being distributed in a ring, it is welded on the outer wall of two 8 opposite sides of fixed cylinder and reinforces cross bar 9,8 top of fixed cylinder Inner wall on be provided with internal screw thread, and be threaded with threaded post 10 on the inner wall of internal screw thread, be welded on the outer wall of threaded post 10 The equidistant rotational handle 11 being distributed in a ring is welded with storing cabinet 12 on the outer wall at the top of fixed cylinder 8, and storing cabinet 12 pushes up It is bonded with thermal insulative board 13 on the outer wall in portion, workbench 14, workbench 14 have been bolted in the top exterior walls of thermal insulative board 13 The two sides of top center position are welded with supporting table 27, are placed with beaker 28 on the outer wall at two 27 tops of supporting table, burn The inside of cup 28 is placed on the inner wall at 29 flask of flask, 29 top and is plugged with sealing-plug, and is plugged on the inner wall of sealing-plug hard Matter conduit, the top of hard conduit are welded with three-way connection 30, are provided with experimental box body 26 on the outer wall at 14 top of workbench, and Experimental box body 26 is socketed in the outside of flask 29 and beaker 28, and three-way connection 30 is welded with emulsion tube far from one end of flask 29 32, emulsion tube 32 is welded with adapter 31 far from one end of three-way connection 30, is connected on the outer wall at 31 top of adapter by conduit It is connected to connection plug 33.
In the present invention, hold-down support 21, and 21 top of hold-down support are welded on the outer wall of 14 top two sides of workbench Outer wall on be rotatably connected to locking rod 22, be socketed with rubber bush on one end outer wall of locking rod 22, locking rod 22 it is another It is welded with briquetting on the outer wall of end, is placed with thermal insulation cloche 20 on the outer wall at 14 top of workbench, 20 two sides of thermal insulation cloche Fixed ear base is welded on outer wall, briquetting is pressed in the top exterior walls of fixed ear base, is socketed on the outer wall of thermal insulation cloche 20 There is residual temperature collecting hood 23, the residual temperature recovery tube 24 equidistantly distributed, workbench are welded in the top exterior walls of residual temperature collecting hood 23 It is provided with the circular hole equidistantly distributed on the outer wall of 14 bottoms, fixing hoop 25, the vertical view of rotation slot are welded on the inner wall of circular hole Shape is circular ring shape, and limit plate 7 has been bolted on the outer wall at 5 top of fixed disk, and limit plate 7 is covered on rotation slot Top, limit plate 7 are socketed on the outer wall of fixed cylinder 8, and rotation connection, storing cabinet 12 are formed between limit plate 7 and fixed cylinder 8 The middle position of side outer wall is welded with fixed block 17, and rotation axis 18, rotation axis are provided on the side outer wall of fixed block 17 Moving handle 19 is welded on 18 side outer wall, the shape of moving handle 19 is snakelike.
It is provided with equidistant pull slot on the outer wall of 12 side of storing cabinet, and is welded with fixing rib on the inner wall of pull slot 15, it rolls on the outer wall at the top of fixing rib 15 and is connected with drawing box 16, pull ring is welded on the outer wall of the side of drawing box 16, even It connects and is welded with the first bulb tube 34 on the outer wall of 33 bottoms of plug, and be welded with U-tube 39 on the outer wall of 34 bottom of the first bulb tube, The inside of U-tube 39 is contained with mobile fluid column 35, is welded with support rail, support rail on the outer wall of 39 opposite side of U-tube It is provided with scale strip 37 on the outer wall of bottom, support frame 36, and the side of support frame 36 are welded on the outer wall of 39 bottom of U-tube Level meter has been bolted on outer wall, has been welded with the second bulb tube 38, the second bulb tube 38 on the outer wall at 39 top of U-tube Filter 40 is welded on the outer wall at top, and the inside of filter 40 is filled with ventilative water filtration membrane, it is outer at the top of filter 40 Pressure gauge 41 is welded with by gas-guide tube on wall, unidirectional air inlet pipe 42 is welded in the bottom outer wall of connection plug 33, and unidirectionally into Blowing nozzle 43 is welded on the outer wall of 42 bottom of tracheae, the outside of blowing nozzle 43 is socketed with balloon 44, fixed cylinder 8 and firm banking Rotation connection is formed between 1, is formed and is threadedly coupled between fixed cylinder 8 and threaded post 10, formed between fixed cylinder 8 and threaded post 10 Relative motion.
In use, the inside that raw material to be reacted is placed on flask 29 and beaker 28 is carried out chemical reaction by teacher, lead to Experimental box body 26 and thermal insulation cloche 20 are crossed being isolated between the chemical raw material and outside air in reaction, is guaranteed in chemical reaction The accurate representation of heat energy transmission to the inside of U-tube 39 or is transferred to balloon by emulsion tube 32 and adapter 33 44 inside is reached by the variation of 44 volume of variation or balloon of fluid column 35 mobile inside U-tube 30 to chemical reaction The effect of middle energy demonstration, wherein teacher can carry out the height of workbench 14 by the fixed cylinder 8 and threaded post 10 of setting It adjusts, teacher moves firm banking 1 and workbench 14 by moving handle 19, convenient for mutual between teacher and student It is dynamic, so that student be allowed to acquire more more intuitive chemical knowledges.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (10)

1. the energy variation demonstration device in a kind of chemical change, including firm banking (1), which is characterized in that the firm banking (1) it is welded on the outer wall of two sides of the bottom supporting leg (2), is socketed with rotation connection on the outer wall of supporting leg (2) bottom end Device (3) is rotatably connected to universal wheel (4) on the inner wall of rotational connector (3) bottom, at the top of the firm banking (1) It is welded on outer wall fixed disk (5), is provided with rotation slot on the outer wall at the top of the fixed disk (5), and turned on the inner wall of rotation slot It is dynamic to be connected with Rotational Cylindrical (6), the equidistant fixed cylinder (8) being distributed in a ring, two institutes are plugged on the inner wall of the rotation slot It states to be welded on the outer wall of fixed cylinder (8) opposite side and reinforces cross bar (9), be provided on the inner wall at the top of the fixed cylinder (8) interior Screw thread, and threaded post (10) are threaded on the inner wall of internal screw thread, it is welded on the outer wall of the threaded post (10) equidistant The rotational handle (11) being distributed in a ring is welded with storing cabinet (12), the storing on the outer wall at the top of the fixed cylinder (8) It is bonded on outer wall at the top of cabinet (12) thermal insulative board (13), has been bolted in the top exterior walls of the thermal insulative board (13) The two sides of workbench (14), workbench (14) the top center position are welded with supporting table (27), two supporting tables (27) it is placed on the outer wall at the top of beaker (28), the inside of the beaker (28) is placed at the top of flask (29) flask (29) Inner wall on be plugged with sealing-plug, and hard conduit is plugged on the inner wall of sealing-plug, the top of the hard conduit is welded with Three-way connection (30) is provided with experimental box body (26) on the outer wall at the top of the workbench (14), and experimental box body (26) is socketed In the outside of flask (29) and beaker (28), the three-way connection (30) is welded with emulsion tube far from the one end of flask (29) (32), the emulsion tube (32) is welded with adapter (31) far from the one end of three-way connection (30), at the top of the adapter (31) Outer wall on connection plug (33) is connected with by conduit.
2. the energy variation demonstration device in a kind of chemical change according to claim 1, which is characterized in that the workbench (14) it is welded with hold-down support (21) on the outer wall of top two sides, and is rotatably connected on the outer wall at the top of hold-down support (21) Locking rod (22) is socketed with rubber bush on one end outer wall of locking rod (22), welds on the other end outer wall of locking rod (22) There is briquetting, be placed on the outer wall at the top of workbench (14) thermal insulation cloche (20), on the outer wall of thermal insulation cloche (20) two sides It is welded with fixed ear base, briquetting is pressed in the top exterior walls of fixed ear base, is socketed on the outer wall of thermal insulation cloche (20) remaining Warm collecting hood (23) is welded with the residual temperature recovery tube (24) equidistantly distributed in the top exterior walls of residual temperature collecting hood (23), works It is provided with the circular hole equidistantly distributed on the outer wall of platform (14) bottom, fixing hoop (25) are welded on the inner wall of circular hole.
3. the energy variation demonstration device in a kind of chemical change according to claim 1, which is characterized in that the rotation slot Plan view shape be circular ring shape, and limit plate (7) have been bolted on the outer wall at the top of fixed disk (5), limit plate (7) covers It covers in the top of rotation slot, limit plate (7) is socketed on the outer wall of fixed cylinder (8), shape between limit plate (7) and fixed cylinder (8) At rotation connection.
4. the energy variation demonstration device in a kind of chemical change according to claim 1, which is characterized in that the storage tank The middle position of body (12) side outer wall is welded with fixed block (17), and is provided with rotation axis on the side outer wall of fixed block (17) (18), it is welded with moving handle (19) on the side outer wall of rotation axis (18), the shape of moving handle (19) is snakelike.
5. the energy variation demonstration device in a kind of chemical change according to claim 1, which is characterized in that the storage tank It is provided with equidistant pull slot on the outer wall of body (12) side, and is welded with fixing rib (15), fixing rib on the inner wall of pull slot (15) it rolls and is connected with drawing box (16) on the outer wall at the top of, be welded with pull ring on the outer wall of the side of drawing box (16).
6. the energy variation demonstration device in a kind of chemical change according to claim 1, which is characterized in that the connection plug (33) it is welded on the outer wall of bottom the first bulb tube (34), and is welded with U-tube on the outer wall of the first bulb tube (34) bottom (39), the inside of U-tube (39) is contained with mobile fluid column (35), and it is horizontal that support is welded on the outer wall of U-tube (39) opposite side Bar is provided with scale strip (37) on the outer wall of support rail bottom.
7. the energy variation demonstration device in a kind of chemical change according to claim 6, which is characterized in that the U-tube (39) it is welded on the outer wall of bottom support frame (36), and level has been bolted on the side outer wall of support frame (36) Instrument is welded with the second bulb tube (38) on the outer wall at the top of U-tube (39).
8. the energy variation demonstration device in a kind of chemical change according to claim 7, which is characterized in that second ball It is welded on outer wall at the top of shape pipe (38) filter (40), and the inside of filter (40) is filled with ventilative water filtration membrane, filtering Pressure gauge (41) are welded with by gas-guide tube on outer wall at the top of device (40).
9. the energy variation demonstration device in a kind of chemical change according to claim 1, which is characterized in that the connection plug (33) it is welded in bottom outer wall unidirectional air inlet pipe (42), and is welded with blowing nozzle on the outer wall of unidirectional air inlet pipe (42) bottom (43), the outside of blowing nozzle (43) is socketed with balloon (44).
10. the energy variation demonstration device in a kind of chemical change according to claim 1, which is characterized in that the fixation It is formed and is rotatablely connected between cylinder (8) and firm banking (1), formed and be threadedly coupled between fixed cylinder (8) and threaded post (10), it is fixed Relative motion is formed between cylinder (8) and threaded post (10).
CN201810268704.5A 2018-03-29 2018-03-29 A kind of energy variation demonstration device in chemical change Pending CN110223585A (en)

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CN107103827A (en) * 2017-07-05 2017-08-29 艾逸凡 A kind of experimental provision of chemical reaction gas
CN207025396U (en) * 2017-07-10 2018-02-23 刘向宇 A kind of biochemical test workbench for being easy to regulation
CN207066150U (en) * 2017-07-10 2018-03-02 衡水康源环保科技有限公司 A kind of waste heat recovery device of smelting furnace
CN206965788U (en) * 2017-07-14 2018-02-06 成都师范学院 A kind of analytical chemistry classroom instruction laboratory vehicle
CN107331244A (en) * 2017-07-25 2017-11-07 康泽波 A kind of contactless water filling beef detection object teaching device

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