CN101882393B - Chemical experiment teaching aid - Google Patents
Chemical experiment teaching aid Download PDFInfo
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- CN101882393B CN101882393B CN2010102173492A CN201010217349A CN101882393B CN 101882393 B CN101882393 B CN 101882393B CN 2010102173492 A CN2010102173492 A CN 2010102173492A CN 201010217349 A CN201010217349 A CN 201010217349A CN 101882393 B CN101882393 B CN 101882393B
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- syringe needle
- test tube
- chemical experiment
- teaching aid
- experiment teaching
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Abstract
The invention relates to a chemical experiment teaching aid which comprises a folding box, wherein the folding box is internally provided with a multifunctional test-tube stand on which a simultaneous equivalent reaction demonstrator is placed. The invention has compact and reasonable structure, convenient carrying, complete function, convenient observation of students and good demonstration effect. The chemical experiment teaching aid is formed by combining the folding box used as an exhibition stand or containing tool, a multifunctional test-tube stand and the simultaneous equivalent reaction demonstrator. The devices can be used for making all experiments in middle school chemistry and ensure that the teachers or students carry out experiment preparation and operate the experiments with labor saving as well as convenience and simplicity. The invention has attractive appearance and stronger scientificalness and safety, is suitable for being widely applied to the chemical experiment teaching and doing all chemical teaching experiments in middle schools, can also assist to improve the teaching quality, and is convenient and practical.
Description
Technical field
The invention belongs to a kind of experiment teaching aid, especially a kind of chemical experiment teaching aid.
Background technology
Chemistry is a natural science based on experiment, carries out experiment and can not only make student's rudimentary knowledge more sturdy, more can effectively improve students ' thinking ability and put into practice manipulative ability.At present, also do not have a kind of chemical experiment teaching aid, be easy to carry, multiple functional, can do various experiments.In addition, present chemical experiment teaching aid does not have Demonstration table, when doing experiment, and inconvenient observation of students.Existing chemistry experiment box volume is heavy, carry and move inconvenience, and interior space availability ratio is very low, can put the few of big slightly experimental provision; Present chemical experimental instrument can only be done single chemical reaction demonstration, as do some complicated slightly chemical experiments and need multiple instrument assembling to be used, these instruments assemblings are loaded down with trivial details, need bigger placing space, and be inconvenient to move after assembling, use very inconvenient; The instrumental function such as test tube rack, iron stand that is used as experiment at present is single, all is relatively independent between instrument.Also there is not chemistry experiment box collapsible, light and handy, that have than the imperial palace space and can use as the experiment exhibition booth after launching in the existing chemistry experiment box, also do not collect reasonable combination multi-functional test tube racks together such as test tube rack, iron stand, depassing unit in the existing test tube rack, also can not make equivalent reaction experiment instrument simultaneously in the existing chemical apparatuses.
Summary of the invention
The present invention is directed to the shortcoming of above-mentioned prior art, a kind of collection experimental demonstration is provided, is showed in one multifunctional chemical experiment teaching aid, this chemical experiment teaching aid is moved easy to carry, and is multiple functional, is fit to various middle schools experimental implementation, satisfies the chemistry experiment requirement.
The present invention solves the technical scheme that its technical matters adopts: this chemical experiment teaching aid, comprise folding chest, and in the folding chest multi-functional test tube rack is housed, be placed with on the test tube rack and wait the quantitative response demonstration device simultaneously:
Folding chest comprises base plate, the base plate periphery is hinged with the first side wall, second sidewall, the 3rd sidewall, the 4th sidewall by hinge, second sidewall is relative with the 4th sidewall, wherein, the outer end of second sidewall is hinged with first top cover by hinge, the outer end of the 4th sidewall is hinged with second top cover that is complementary with first top cover by hinge, connects by active connection between the adjacent wall;
Multi-functional test tube rack comprises lower plate, upper plate, and upper plate, lower plate intermediate supports have Connection Block, and the lower plate both sides respectively are provided with one group of groove, and the upper plate both sides respectively are provided with one group and the corresponding through hole of groove;
Wait the quantitative response demonstration device to comprise test tube, shunt simultaneously, the shunt bottom is provided with the water inlet syringe needle that water delivering orifice is positioned at the shunt inner chamber, the water inlet of this water inlet syringe needle is connected with syringe by penstock, the shunt bottom is provided with one group of water outlet syringe needle that is complementary with the water inlet syringe needle, the water delivering orifice of water outlet syringe needle is connected to the syringe needle that drips by water output duct, and this syringe needle that drips is positioned in vitro.
Folding chest is a chemistry experiment box, when need placing instrument, the web member of chest is unclamped, and launches chest, and experimental provision is placed above the base plate, draws in chest is folding after placing, and experimental apparatus has just placed.Doing when experiment, the chest after the expansion can also use as the exhibition booth, experiment can be on base plate direct control, be convenient to observation of students.After being equipped with multi-functional test tube rack, but all chemical experiment in the learning by doing chemistry teaching, and convenient teaching also helps the student experimenting practical operation.The quantitative response demonstration device can accomplish to wait again simultaneously the simple and easy experimental apparatus of quantitative response when being equipped with etc., has filled up the blank in this experimental apparatus field.
The present invention can be further perfect by following manner:
Active connection comprises lock dog, latch, has jack on the lock dog, and the two ends of latch are plugged on respectively on the jack of adjacent lock dog.
Base plate has drawer, and described drawer is provided with handle, can adorn experimental apparatus, reagent etc. in the drawer; Have screw on the base plate; The folding anastomosis of first top cover, second top cover has the recess that is complementary with screw, like this, the shadoof that has handle can be changed over to screw and stretch out from recess, makes things convenient for chest to move and carries.
Upper plate middle part has the storing groove, and this storing groove communicates with the inner chamber of Connection Block, like this, can place a little small test instruments in the storing groove, and as dropper etc., interior the communicating with the storing groove of while Connection Block can reduce the volume of test tube rack.
Upper plate is connected with card, has the aperture that is used to place iron stand on the card, and the lower plate periphery is connected with the rotor that is complementary with card, has little screw on the rotor, and like this can be firm iron stand be transferred on little screw conveniently tested.
Be provided with liner plate between lower plate and the upper plate, like this, can do color contrast, the change color in the observation experiment with liner plate; The lower plate bottom is provided with rotating disk, and rotating disk is coupling by rotating shaft and lower plate, can make things convenient for whole test tube rack to rotate like this, can switch visual angle, handled easily at any time.
Described multi-functional test tube rack is provided with waste gas purification apparatus, and this waste gas purification apparatus comprises the deaerating chamber that is positioned at Connection Block, and deaerating chamber is provided with draft tube, water level gauge.
Shunt comprises sleeve pipe, rubber plug, piston, and rubber plug is located at sleeve bottom, and piston is located at inside pipe casing, and water inlet syringe needle, water outlet syringe needle all pass in rubber plug and the sleeve pipe and communicate, and the syringe needle water delivering orifice of intaking in the sleeve pipe pushes up to piston; The water delivering orifice of water inlet syringe needle is higher than the water inlet of water outlet syringe needle, like this, can guarantee that experiment reagent experimentizes for each test tube by the shunt uniform distribution, reaches not only simultaneously but also the experiment purpose of equivalent.
Sleeve surface is provided with scale, can weigh the amount of experiment reagent like this according to scale; The described quantitative response demonstration device that waits simultaneously comprises test tube rack, and test tube rack is provided with back up pad, through hole, and shunt is located on the back up pad, test tube is located in the through hole, like this, makes and waits quantitative response demonstration device and multi-functional test tube rack to combine simultaneously, multiple functionally can reduce overall volume again, simple and convenient.
The effect that the present invention is useful is: compact conformation of the present invention is reasonable, easy to carry, multiple functional, make things convenient for observation of students, good demonstration effect.The present invention is by doing the folding chest that also can make the instrument of holding in the exhibition booth, multi-functional test tube rack, waiting the quantitative response demonstration device to combine simultaneously, these equipment can be done all experiments of containing middle school chemistry, use these apparatuss, teacher or student are experimentized prepare with operation experiments both laborsaving have simple and convenient.The present invention is handsome in appearance, has stronger science and security, is fit to extensively apply in the middle of the chemical experiment teaching, is fit to do all high school chemistry teaching experiments, can assist and improve the quality of teaching, and is convenient and practical.
Description of drawings
Fig. 1 is a perspective view of the present invention;
Fig. 2 is the perspective view after the folding chest of the present invention launches;
Fig. 3 is the perspective view of the folding back of the folding chest of the present invention when uncovered;
Fig. 4 is the perspective view after the folding chest of the present invention folds;
Fig. 5 is the structural representation after A partly amplifies among Fig. 2;
Perspective view when Fig. 6 is the folding back of the folding chest of the present invention band shadoof;
Fig. 7 is the perspective view of the multi-functional test tube rack of the present invention;
Fig. 8 is the perspective view of the multi-functional test tube rack of the present invention;
Fig. 9 is the structural representation of the positive apparent time of the multi-functional test tube rack of the present invention;
Figure 10 is the perspective view that the present invention waits the quantitative response demonstration device simultaneously;
Figure 11 is the structural representation after B partly amplifies among Figure 11.
Description of reference numerals: base plate 1, drawer 1-1, handle 1-2, screw 1-3, hinge 2, the first side wall 3, second sidewall 4, the 3rd sidewall 5, the 4th sidewall 6, first top cover 7, second top cover 8, web member 9, lock dog 9-1, latch 9-2, jack 9-3, lower plate 10, rotor 10-1, little screw 10-2, upper plate 11, storing groove 11-1, card 11-2, aperture 11-3, Connection Block 12, groove 13, through hole 14, test tube 15, shunt 16, sleeve pipe 16-1, rubber plug 16-2, piston 16-3, scale 16-4, water inlet syringe needle 17, penstock 18, syringe 19, water outlet syringe needle 20, water output duct 21, syringe needle 22 drips, recess 23, iron stand 24, liner plate 25, waste gas purification apparatus 26, deaerating chamber 26-1, draft tube 26-2, water level gauge 26-3, rotating disk 27, rotating shaft 28, back up pad 29, shadoof 30.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
With reference to accompanying drawing, this chemical experiment teaching aid comprises folding chest, in the folding chest multi-functional test tube rack is housed, and is placed with on the test tube rack and waits the quantitative response demonstration device simultaneously:
Described folding chest comprises base plate 1, base plate 1 periphery is hinged with the first side wall 3, second sidewall 4, the 3rd sidewall 5, the 4th sidewall 6 by hinge 2, second sidewall 4 is relative with the 4th sidewall 6, wherein, the outer end of second sidewall 4 is hinged with first top cover 7 by hinge 2, the outer end of the 4th sidewall 6 is hinged with second top cover 8 that is complementary with first top cover 7 by hinge 2, connects by active connection 9 between the adjacent wall; Active connection 9 comprises lock dog 9-1, latch 9-2, has jack 9-3 on the lock dog 9-1, and the two ends of latch 9-2 are plugged on respectively on the jack 9-3 of adjacent lock dog 9-1.Base plate 1 has drawer 1-1, and described drawer 1-1 is provided with handle 1-2, can adorn experimental apparatus, reagent etc. in the drawer 1-1; Have screw 1-3 on the base plate 1; The folding anastomosis of first top cover 7, second top cover 8 has the recess 23 that is complementary with screw 1-3, like this, the shadoof 30 that has handle can be changed over to screw 1-3 and stretch out from recess, makes things convenient for chest to move and carries.
Described multi-functional test tube rack comprises lower plate 10, upper plate 11, and upper plate 11, lower plate 10 intermediate supports have Connection Block 12, and lower plate 10 both sides respectively are provided with one group of groove 13, and upper plate 11 both sides respectively are provided with one group and groove 13 corresponding through holes 14; Like this, just can put two row's test tubes and carry out multinomial contrast experiment.Upper plate 11 middle parts have storing groove 11-1, this storing groove 11-1 communicates with the inner chamber of Connection Block 12, like this, can place a little small test instruments in storing groove 11-1, as dropper etc., communicating with storing groove 11-1 in the Connection Block 12 simultaneously to reduce the volume of test tube rack.Upper plate 11 is connected with card 11-2, have the aperture 11-3 that is used to place iron stand 24 on the card 11-2, lower plate 10 peripheries are connected with the rotor 10-1 that is complementary with card 11-2, have little screw 10-2 on the rotor 10-1, like this can be firm iron stand 24 be transferred on little screw 10-2, convenient experiment.Be provided with liner plate 25 between lower plate 10 and the upper plate 11, like this, can do color contrast, the change color in the observation experiment with liner plate 25; Lower plate 10 bottoms are provided with rotating disk 27, and rotating disk 27 is coupling by rotating shaft 28 and lower plate 10, can make things convenient for whole test tube rack to rotate like this, can switch visual angle, handled easily at any time.Described multi-functional test tube rack is provided with waste gas purification apparatus 26, and this waste gas purification apparatus 26 comprises the deaerating chamber 26-1 that is positioned at Connection Block 12, and deaerating chamber 26-1 is provided with draft tube 26-2, water level gauge 26-3.Like this, waste gas is directly received draft tube by conduit and is entered deaerating chamber and purify reaction, can know the use amount situation of seeing in the deaerating chamber of removing gas-liquid by water level gauge.
The described quantitative response demonstration device that waits simultaneously comprises test tube 15, shunt 16, shunt 16 bottoms are provided with the water inlet syringe needle 17 that water delivering orifice is positioned at shunt 16 inner chambers, the water inlet of this water inlet syringe needle 17 is connected with syringe 19 by penstock 18, shunt 16 bottoms are provided with one group of water outlet syringe needle 20 that is complementary with water inlet syringe needle 17, the water delivering orifice of water outlet syringe needle 20 is connected to the syringe needle 22 that drips by water output duct 21, and this syringe needle 22 that drips is positioned at test tube 15.The syringe needle that drips is more little, and experimental pharmacy output is just stable more, and the equivalent effect is more stable when can make device.Shunt 16 comprises sleeve pipe 16-1, rubber plug 16-2, piston 16-3, rubber plug 16-2 is located at sleeve pipe 16-1 bottom, piston 16-3 is located at sleeve pipe 16-1 inside, water inlet syringe needle 17, water outlet syringe needle 20 all pass in rubber plug 16-2 and the sleeve pipe 16-1 and communicate, and syringe needle 17 water delivering orifices of intaking in the sleeve pipe 16-1 push up to piston 16-3; The water delivering orifice of water inlet syringe needle 17 is higher than the water inlet of water outlet syringe needle 20, like this, reagent is sprayed onto piston through the water inlet syringe needle, reagent is dissipated on the internal surface of sleeve pipe, flow down, in this process, air in the sleeve pipe and the air in the water output duct will be discharged from again, make each water outlet syringe needle that branches to that reagent can uniform and stable, and can control shunt internal volume size as required and make device equivalent effect simultaneously more stable.Like this, can guarantee that experiment reagent experimentizes for each test tube by the shunt uniform distribution, reach not only simultaneously but also the experiment purpose of equivalent.Sleeve pipe 16-1 surface is provided with scale 16-4, can weigh the amount of experiment reagent like this according to scale; The described quantitative response demonstration device that waits simultaneously comprises test tube rack, test tube rack is provided with back up pad 29, through hole 14, shunt 16 is located on the back up pad 29, test tube 15 is located in the through hole 14, like this, make and wait quantitative response demonstration device and multi-functional test tube rack to combine simultaneously, multiple functionally can reduce overall volume again, simple and convenient.
Folding chest fixes active connection after receiving and disturbing, and can be used as chemistry experiment box and uses, and places instrument within it, is easy to carry, and muscle power more weak women teacher also can carry easily.In the experiment, after chest launched, top cover is launched leg as sidewall, at this moment chest is just as the exhibition booth use, experiment can be on base plate direct control, make things convenient for observation of students, teaching demonstration effective.The multi-functional test tube rack of adorning in chest can be done all high school chemistry teaching experiments, and not only convenient teaching also helps the student experimenting practical operation.The quantitative response demonstration device can accomplish to wait again simultaneously the simple and easy experimental apparatus of quantitative response in the time of on the test tube rack etc., has filled up the blank in this experimental apparatus field.
The present invention is multiple functional, and is easy to carry.Chest can fold, and not only is easy to carry, and can also use as show stand after the expansion.Test tube rack in the chest can be done various experiments.Wait the quantitative response demonstration device can make to wait simultaneously quantitative response simultaneously, fill up the field blank.Its concrete using method is as follows:
Draw in when folding chest, first, second, third and fourth sidewall is upwards closed, the lock dog 9-1 in each adjacent activities web member 9 folds first and second top cover by latch 9-2 grafting jack 9-3 phase interconnected lock, and chest has just folded.At this moment, can place experimental apparatus within it, be easy to carry.In the time will launching to use as testing table, launch first and second top cover, the experimental apparatus that is stored in the chest is taken out, unplug latch 9-2 then, first, second, third and fourth sidewall is put down, first and second top cover is launched once more, backward as the leg of two, four sidewalls, drawer is pulled out, as the 3rd sidewall leg.Like this, whole chest is launched into a big experiment porch, and there are drawer, first and second top cover in the platform bottom as leg, and is reliable and stable, safe in utilization.
Use the process of multi-functional test tube rack as follows: during use, will be with the test tube 15 of arm to insert through holes 14 to groove 13, the screw 10-2 that the iron stand bar is passed on aperture 11-3 and the rotor 11-2 tightens, the clamping experimental provision.Two groups of grooves, through holes make it can place two row's test tubes, help the contrast and the observation of property experiment.In the experiment liner plate placed test tube 15 back, can observation experiment in color ratio change and the experiment reactions change.Experiment then is connected the draft tube 26-2 of the arm on the test tube 15 with waste gas purification apparatus 26, like this, harmful gas just is sent to purify in the deaerating chamber 26-1 and has reacted, and can know the use amount situation of seeing in the deaerating chamber 26-1 of removing gas-liquid by water level gauge 26-3.The utility model can also rotate by the chassis regulates viewing angle.
Using waits the process of quantitative response demonstration device as follows simultaneously: check the leakproofness that connects between water inlet syringe needle 17, penstock 18, shunt 16, water outlet syringe needle 20, the water output duct 21.After inspection is passed through, the syringe needle 17 of will intaking extends piston 16-3 place, experimental pharmacy is evacuated in the syringe 19, on test tube rack, place the test tube that the question response medicament is housed, the syringe needle 22 that respectively drips is inserted in respectively in vitro different, pushing syringe 19, experimental pharmacy arrives in the shunt 16 through penstock 18 to water inlet syringe needle 17, be distributed to each water outlet syringe needle 20 again, to syringe needle 22 the dripping in each test tube to be measured of equivalent simultaneously of dripping, carry out while equivalent reaction experiment at the water output duct 21 of flowing through.After testing, the success ratio of this experiment reaches 100%.
The material that the present invention makes use can be the PVC material.
Though the present invention illustrates and describes by the reference preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and the details.
Claims (9)
1. a chemical experiment teaching aid comprises folding chest, in the folding chest multi-functional test tube rack is housed, and is placed with on the test tube rack and waits the quantitative response demonstration device simultaneously, it is characterized in that:
Described folding chest comprises base plate (1), base plate (1) periphery is hinged with the first side wall (3), second sidewall (4), the 3rd sidewall (5), the 4th sidewall (6) by hinge (2), described second sidewall (4) is relative with the 4th sidewall (6), wherein, the outer end of second sidewall (4) is hinged with first top cover (7) by hinge (2), the outer end of described the 4th sidewall (6) is hinged with second top cover (8) that is complementary with first top cover (7) by hinge (2), connects by active connection (9) between the adjacent wall;
Described multi-functional test tube rack comprises lower plate (10), upper plate (11), upper plate (11), lower plate (10) intermediate supports have Connection Block (12), described lower plate (10) both sides respectively are provided with one group of groove (13), and upper plate (11) both sides respectively are provided with one group and the corresponding through hole of groove (13) (14);
The described quantitative response demonstration device that waits simultaneously comprises test tube (15), shunt (16), described shunt (16) bottom is provided with the water inlet syringe needle (17) that water delivering orifice is positioned at shunt (16) inner chamber, the water inlet of this water inlet syringe needle (17) is connected with syringe (19) by penstock (18), described shunt (16) bottom is provided with one group of water outlet syringe needle (20) that is complementary with water inlet syringe needle (17), the water delivering orifice of described water outlet syringe needle (20) is connected to the syringe needle that drips (22) by water output duct (21), and this syringe needle that drips (22) is positioned at test tube (15).
2. chemical experiment teaching aid according to claim 1, it is characterized in that: described active connection (9) comprises lock dog (9-1), latch (9-2), have jack (9-3) on the lock dog (9-1), the two ends of latch (9-2) are plugged on respectively on the jack (9-3) of adjacent lock dog (9-1).
3. chemical experiment teaching aid according to claim 1 is characterized in that: described base plate (1) has drawer (1-1), and described drawer (1-1) is provided with handle (1-2); Have screw (1-3) on the described base plate (1); The folding anastomosis of described first top cover (7), second top cover (8) has the recess (23) that is complementary with screw (1-3).
4. chemical experiment teaching aid according to claim 1 is characterized in that: described upper plate (11) middle part has storing groove (11-1), and this storing groove (11-1) communicates with the inner chamber of Connection Block (12).
5. according to claim 1 or 4 described chemical experiment teaching aids, it is characterized in that: described upper plate (11) is connected with card (11-2), has the aperture (11-3) that is used to place iron stand (24) on the described card (11-2); Described lower plate (10) periphery is connected with the rotor (10-1) that is complementary with card (11-2), has little screw (10-2) on the described rotor (10-1).
6. chemical experiment teaching aid according to claim 1 is characterized in that: be provided with liner plate (25) between described lower plate (10) and the upper plate (11); Described lower plate (10) bottom is provided with rotating disk (27), and described rotating disk (27) is coupling by rotating shaft (28) and lower plate (10).
7. chemical experiment teaching aid according to claim 1, it is characterized in that: described multi-functional test tube rack is provided with waste gas purification apparatus (26), this waste gas purification apparatus (26) comprises the deaerating chamber (26-1) that is positioned at Connection Block (12), and deaerating chamber (26-1) is provided with draft tube (26-2), water level gauge (26-3).
8. chemical experiment teaching aid according to claim 1, it is characterized in that: described shunt (16) comprises sleeve pipe (16-1), rubber plug (16-2), piston (16-3), described rubber plug (16-2) is located at sleeve pipe (16-1) bottom, described piston (16-3) is located at sleeve pipe (16-1) inside, described water inlet syringe needle (17), water outlet syringe needle (20) all pass in rubber plug (16-2) and the sleeve pipe (16-1) and communicate, and water inlet syringe needle (17) water delivering orifice pushes up to piston (16-3) in the described sleeve pipe (16-1); The water delivering orifice of described water inlet syringe needle (17) is higher than the water inlet of water outlet syringe needle (20).
9. chemical experiment teaching aid according to claim 8 is characterized in that: described sleeve pipe (16-1) surface is provided with scale (16-4); Described test tube rack is provided with back up pad (29), through hole (14), and described shunt (16) is located on the back up pad (29), and described test tube (15) is located in the through hole (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102173492A CN101882393B (en) | 2010-07-05 | 2010-07-05 | Chemical experiment teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102173492A CN101882393B (en) | 2010-07-05 | 2010-07-05 | Chemical experiment teaching aid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101882393A CN101882393A (en) | 2010-11-10 |
| CN101882393B true CN101882393B (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102173492A Expired - Fee Related CN101882393B (en) | 2010-07-05 | 2010-07-05 | Chemical experiment teaching aid |
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| CN (1) | CN101882393B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107437360A (en) * | 2016-01-31 | 2017-12-05 | 陈萍 | Chemical experiment teaching apparatus for demonstrating |
| CN108043485A (en) * | 2017-12-29 | 2018-05-18 | 谢宗泰 | A kind of portable chemical experimental heating apparatus |
| CN109259513A (en) * | 2018-09-25 | 2019-01-25 | 湘南学院 | A kind of chemistry teaching displaying device and its application method |
| CN114210385B (en) * | 2021-12-17 | 2023-09-08 | 安徽沃斯特教育装备有限公司 | Teacher's podium is used in chemistry experiment room |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86103070A (en) * | 1986-04-30 | 1987-08-26 | 西北师范学院 | Multi-functional middle school chemical experiment composite set |
| CN2592271Y (en) * | 2003-01-06 | 2003-12-17 | 吴道民 | Mulfifunctional chemical laboratory box |
| CN2675247Y (en) * | 2003-12-19 | 2005-02-02 | 李俊海 | Chemical reaction combined box |
| CN2787302Y (en) * | 2005-05-13 | 2006-06-14 | 魏光峰 | Four sides open type portable chemical experimental box for middle school chemical experiment |
| CN201404816Y (en) * | 2009-03-19 | 2010-02-17 | 孟庆廷 | Test tube demonstration test shelf for teaching |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA994175B (en) * | 1999-03-11 | 2000-02-03 | Univ Potchefstroom | A chemistry kit. |
-
2010
- 2010-07-05 CN CN2010102173492A patent/CN101882393B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86103070A (en) * | 1986-04-30 | 1987-08-26 | 西北师范学院 | Multi-functional middle school chemical experiment composite set |
| CN2592271Y (en) * | 2003-01-06 | 2003-12-17 | 吴道民 | Mulfifunctional chemical laboratory box |
| CN2675247Y (en) * | 2003-12-19 | 2005-02-02 | 李俊海 | Chemical reaction combined box |
| CN2787302Y (en) * | 2005-05-13 | 2006-06-14 | 魏光峰 | Four sides open type portable chemical experimental box for middle school chemical experiment |
| CN201404816Y (en) * | 2009-03-19 | 2010-02-17 | 孟庆廷 | Test tube demonstration test shelf for teaching |
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| Publication number | Publication date |
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| CN101882393A (en) | 2010-11-10 |
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Granted publication date: 20111214 Termination date: 20120705 |