CN113706981A - Oxygen multielement preparation demonstration device for chemical experiments - Google Patents
Oxygen multielement preparation demonstration device for chemical experiments Download PDFInfo
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- CN113706981A CN113706981A CN202111035110.8A CN202111035110A CN113706981A CN 113706981 A CN113706981 A CN 113706981A CN 202111035110 A CN202111035110 A CN 202111035110A CN 113706981 A CN113706981 A CN 113706981A
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- oxygen
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000001301 oxygen Substances 0.000 title claims abstract description 32
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- 239000000126 substance Substances 0.000 title claims abstract description 20
- 238000002474 experimental method Methods 0.000 title claims abstract description 16
- 238000003825 pressing Methods 0.000 claims description 10
- 230000002457 bidirectional effect Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 description 17
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000012286 potassium permanganate Substances 0.000 description 3
- 238000003421 catalytic decomposition reaction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/24—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for chemistry
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Physics (AREA)
- Algebra (AREA)
- Computational Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Mathematical Optimization (AREA)
- Medicinal Chemistry (AREA)
- Pure & Applied Mathematics (AREA)
- Business, Economics & Management (AREA)
- Chemical & Material Sciences (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Abstract
The invention discloses a chemical experiment oxygen multielement preparation demonstration device which comprises a base, wherein a rotary ring is arranged on the upper side of the base, annular frames are arranged on the upper side of the base and positioned on two sides of the rotary ring, movable leaf plates are arranged on the periphery of the base, a connecting frame is rotatably connected to one side of each movable leaf plate relative to the base, the connecting frame is connected with the base through a sliding connection rod, and a locking part for closing the four movable leaf plates is arranged on each support. According to the oxygen preparation device, firstly, the test tubes are annularly erected in the same vertical plane through the arrangement of the annular frame with the annular structure, diversified oxygen preparation modes are intensively displayed for students, secondly, the position state of the annular frame can be controlled through rotating the handle, so that a teacher in any class can conveniently control and use the device, and finally, the lock sleeve slides downwards, so that a square frame body is formed between the four movable page plates and the base, and the purpose of being convenient for the teacher in any class to carry along with the classroom is achieved.
Description
Technical Field
The invention relates to the technical field of demonstration teaching aids, in particular to a chemical experiment oxygen multielement preparation demonstration device.
Background
The demonstration teaching aid is a teaching aid for providing a student with a material object, a model, a diagram and the like in teaching. The demonstration teaching aid is correctly applied, so that the learning interest of students can be improved, the perceptual knowledge is enriched, the difficulty in learning is reduced, the clear concept is formed, and the observation capability and the thinking capability of the students are developed.
In a chemical laboratory of middle school, the preparation and collection of oxygen are generally performed by adopting heating potassium permanganate, catalytic decomposition of hydrogen peroxide by manganese dioxide, a drainage method and an evacuation method, different types of oxygen preparation methods are used, the arrangement states of the oxygen preparation methods are different, for example, a bottle body of the bottle body for heating potassium permanganate to generate oxygen is obliquely erected, a bottle body for catalytic decomposition of hydrogen peroxide by manganese dioxide to generate oxygen is erected with a bottle opening facing upwards, a bottle body of potassium chlorate heated under catalysis of manganese dioxide to generate oxygen is also obliquely erected, in the laboratory, when a teacher wants to show the oxygen preparation process in a diversified manner, a plurality of erecting platforms for clamping reaction equipment are required to be prepared, the equipment for reaction is arranged in rows on a laboratory table, and then the reaction facilities are sequentially operated and processed, the reaction facility that is rectangular distribution leads to different chemical reaction's demonstration to be dispersion relatively, perhaps selects to demonstrate different reaction modes in proper order, just can't reach the effect of synchronous contrast demonstration this moment, and the student is difficult to understand the differentiation to the oxygen preparation mode of different grade type to lead to the student to be difficult to understand and remember corresponding chemical knowledge, and the preparation facility of dispersion also does not benefit to the arrangement and the carrying along with the hall of the teacher of wanting the course.
Disclosure of Invention
The invention aims to: in order to solve the problems, the utility model provides a chemical experiment oxygen multielement preparation demonstration device.
In order to achieve the purpose, the invention adopts the following technical scheme: a multielement preparation demonstration device for oxygen used for chemical experiments comprises a base, wherein a rotary ring is arranged on the upper side of the base, annular frames are arranged on two sides of the rotary ring on the upper side of the base and are rotatably connected with the rotary ring, four supports for supporting the annular frames are fixedly arranged at the upper end of the base, three test tubes are arranged in the rotary ring, a hole groove for the test tubes to penetrate through is formed in the rotary ring, opposite clamping parts for fixing the test tubes are further arranged on the rotary ring, two baffle plates are fixedly arranged at the upper end of the rotary ring, a shaft lever is arranged between the two baffle plates in a penetrating manner, a sliding sleeve is fixedly arranged at one end, opposite to the two baffle plates, of the sliding sleeve is sleeved on the outer side of the shaft lever and is in sliding connection with the shaft lever, a bidirectional transmission part for driving the two annular frames to synchronously move is arranged on the shaft lever, and a top connection frame is fixedly arranged at the upper end of the support, every two it places the platform to set firmly the alcohol burner that runs through the swivel between the frame to connect the top, be provided with movable page or leaf board around the base, one side of the relative base of movable page or leaf board rotates and is connected with linking frame, linking frame links to each other with the base through the extension rod, and sliding rod and base sliding connection, be provided with on the support so that four closed closure parts of movable page or leaf board.
Preferably, a retainer is fixedly arranged at one end of the annular frame opposite to the bracket, a retaining sleeve corresponding to the retainer is fixedly arranged at the inner end of the bracket, and the retaining sleeve is in sliding connection with the retainer.
Preferably, the clamping part comprises a clamping sleeve, a support rod, a reset spring and an arc-shaped clamping plate, the support rod corresponding to the hole groove is arranged in the rotating ring in a sliding mode, and the arc-shaped clamping plate is fixedly arranged at one end, located in the hole groove, of the support rod.
Preferably, the other end of branch has set firmly the joint cover, and the joint cover is the inboard that the U type structure slided and sets up at the annular frame, the outside cover of branch is equipped with the reset spring who acts on the joint cover.
Preferably, the bidirectional transmission part comprises a rotary sleeve, a compression spring, a handle and a pressing cam, the outer side of the shaft lever is rotatably connected with the rotary sleeve, and the rotary sleeve is sleeved on the outer sides of the two sliding sleeves and is rotatably connected with the two sliding sleeves.
Preferably, a handle is fixedly arranged at the outer end of the rotary sleeve, pressing cams which are vertically distributed with the handle are fixedly arranged at the outer end of the rotary sleeve, an annular groove which is matched with the pressing cams to abut against is formed in the outer portion of the rotary ring, and a compression spring is sleeved between the two sliding sleeves on the outer side of the shaft rod.
Preferably, the outer end of the sliding sleeve is fixedly provided with a driven lug, the interior of the rotary sleeve is provided with a sliding rail matched with the two driven lugs to slide, and the sliding rail is spirally distributed on the inner side of the rotary sleeve.
Preferably, the locking component comprises a lock sleeve and a T-shaped projection, the T-shaped projection is fixedly arranged at each of two side ends of the movable leaf plate, and the lock sleeve is connected to the outer side of the support in a sliding manner.
Preferably, two notches matched with the T-shaped convex blocks are formed in the lock sleeve, and the two notches are vertically distributed.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the rotary ring and the annular frame are arranged on the base, the test tube and the support rod are arranged in the rotary ring, the support rod is provided with a clamping sleeve and an arc-shaped clamping plate, the mounting position of the test tube is selected according to the reaction type, after the test tube is embedded between the two arc-shaped clamping plates, the annular frame fixed with the baffle is controlled by the bidirectional transmission part to synchronously move in opposite directions, when the two arc-shaped clamping plates clamp the outer end surface of the test tube oppositely, the collecting bottle is communicated with the test tube through the pipe fitting, through the arrangement of the annular frame with the annular structure, the teachers can annularly arrange three test tubes for different reaction modes in the same vertical plane, the diversified oxygen preparation modes are intensively displayed for students, and the students can know the difference of the oxygen prepared by each chemical reaction by comparing different types of chemical reactions, so that the students can understand and remember the chemical knowledge.
2. This application is through being equipped with the baffle on two annular frames, be equipped with the axostylus axostyle between two baffles, be equipped with the cover soon on the axostylus axostyle, be equipped with the handle on revolving the cover and support and press the lug, it revolves the cover to rotate through the handle, it will slide along the slide rail to set firmly the driven lug in the sliding sleeve outer end, and then make two revolve the cover and drive the annular frame respectively and do synchronous motion, be convenient for the teacher of wanting the lesson to the control of revolving the annular state, when the handle is the horizontality, support and press the cam will tightly hug closely into the annular groove, rotate with the random of restriction cover soon, ensure two annular frames and maintain stable state of crimple, through the rotating to the handle, can control the position state of annular frame, thereby be convenient for the teacher of wanting the lesson to use the control of device.
3. This application is through being equipped with movable page or leaf board in the base outside, be equipped with T type lug and linking frame on movable page or leaf board, be equipped with the pole that slides on linking frame, be equipped with the lock sleeve on the support, it is vertical state to rotate four movable page or leaf boards by the horizontality, through the lock sleeve that slides downwards, make in the inside notch of T type lug embedding lock sleeve on the adjacent movable page or leaf board, form a square framework between four movable page or leaf boards and the base this moment, reach the purpose that the teacher of being convenient for carried along with the hall.
Drawings
FIG. 1 illustrates a front view provided in accordance with an embodiment of the present invention;
FIG. 2 illustrates a side view provided in accordance with an embodiment of the present invention;
FIG. 3 illustrates a top view provided in accordance with an embodiment of the present invention;
FIG. 4 illustrates a partial exploded view provided in accordance with an embodiment of the present invention;
fig. 5 illustrates a cross-sectional view of a swivel sleeve provided in accordance with an embodiment of the present invention.
Illustration of the drawings:
1. a base; 2. a movable leaf plate; 3. a T-shaped bump; 4. a linking frame; 5. a sliding connection rod; 6. a support; 601. a retaining sleeve; 7. a top connection frame; 8. a lock sleeve; 9. rotating a ring; 901. an annular groove; 902. a hole groove; 10. a test tube; 11. an annular frame; 12. a holder; 13. a clamping sleeve; 14. a strut; 15. a return spring; 16. an arc-shaped splint; 17. a slide rail; 18. a baffle plate; 19. a sliding sleeve; 20. a driven lug; 21. a shaft lever; 22. a compression spring; 23. screwing a sleeve; 24. a handle; 25. pressing the cam; 26. the alcohol burner is placed the platform.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a multi-element preparation demonstration device for oxygen for chemical experiments comprises a base 1, wherein a rotary ring 9 is arranged on the upper side of the base 1, annular frames 11 are arranged on two sides, located on the rotary ring 9, of the upper side of the base 1, the annular frames 11 are rotatably connected with the rotary ring 9, four supports 6 for supporting the annular frames 11 are fixedly arranged at the upper end of the base 1, three test tubes 10 are arranged in the rotary ring 9, hole grooves 902 matched with the test tubes 10 to penetrate through are formed in the rotary ring 9, opposite clamping components for fixing the test tubes 10 are further arranged on the rotary ring 9, two baffle plates 18 are fixedly arranged at the upper end of the rotary ring 9, a shaft rod 21 penetrates between the two baffle plates 18, a sliding sleeve 19 is fixedly arranged at one opposite end of the two baffle plates 18, the sliding sleeve 19 is sleeved on the outer side of the shaft rod 21 and is in sliding connection with the shaft rod 21, a bidirectional transmission component for driving the two annular frames 11 to synchronously move is arranged on the shaft rod 21, a top connection frame 7 is fixedly arranged at the upper end of the supports 6, an alcohol lamp placing table 26 penetrating through a rotary ring 9 is fixedly arranged between every two top connection frames 7, movable leaf plates 2 are arranged on the periphery of a base 1, one sides of the movable leaf plates 2, which are opposite to the base 1, are rotatably connected with a connection frame 4, the connection frame 4 is connected with the base 1 through a sliding connection rod 5, the sliding connection rod 5 is in sliding connection with the base 1, locking parts for closing the four movable leaf plates 2 are arranged on a support 6, when the alcohol lamp placing table is used, a teacher needs to place different types of reaction compounds in test tubes 10 according to the types of chemical reactions, the test tubes 10 for catalytically decomposing hydrogen peroxide by manganese dioxide to generate oxygen are placed in hole grooves 902 in the middle of the bottom, reaction bottles containing potassium permanganate and the test tubes 10 containing potassium chlorate are respectively placed in the other two hole grooves 902 at certain inclination angles, and at the moment, the three test tubes 10 are respectively in transition fit with corresponding arc-shaped clamping plates 16, the two sliding sleeves 19 are controlled by the bidirectional transmission component to drive the annular frame 11 fixed with the baffle 18 to synchronously move in opposite directions, at the moment, the clamping sleeve 13 clamped on the inner side of the annular frame 11 drives the arc-shaped clamping plate 16 to move through the supporting rod 14, after the two arc-shaped clamping plates 16 located in the hole slots 902 clamp the outer end faces of the test tubes 10 oppositely, the fastening of the test tube 10 can be completed, and finally the bottle body for collecting oxygen is placed on the movable leaf plate 2, the collecting bottle is communicated with the test tubes 10 through the pipe fittings, and through the arrangement of the annular frame 11 with an annular structure, the teachers can annularly arrange the three test tubes 10 used for different reaction modes in the same vertical plane, the diversified oxygen preparation modes are intensively displayed for students, and the students can know the difference of the oxygen prepared by each chemical reaction by comparing different types of chemical reactions, so that the students can understand and remember the chemical knowledge.
Specifically, as shown in fig. 1 to 4, one end of the annular frame 11 opposite to the support 6 is fixedly provided with the holder 12, the inner end of the support 6 is fixedly provided with the holding sleeve 601 corresponding to the holder 12, and the holding sleeve 601 is slidably connected with the holder 12, when the two annular frames 11 move synchronously, the holder 12 fixedly arranged on the annular frame 11 slides along the holding sleeve 601, so as to achieve the purpose of ensuring the stable movement of the two annular frames 11.
Specifically, as shown in fig. 1-4, the clamping member includes a clamping sleeve 13, a supporting rod 14, a return spring 15 and an arc-shaped clamping plate 16, the supporting rod 14 corresponding to the hole 902 is slidably disposed inside the rotating ring 9, the arc-shaped clamping plate 16 is fixedly disposed at one end of the supporting rod 14 located in the hole 902, the clamping sleeve 13 is fixedly disposed at the other end of the supporting rod 14, the clamping sleeve 13 is slidably disposed inside the ring frame 11 in a U-shaped structure, the return spring 15 acting on the clamping sleeve 13 is sleeved outside the supporting rod 14, when the ring frame 11 moves synchronously in opposite directions, the clamping sleeve 13 clamped inside the ring frame 11 drives the arc-shaped clamping plate 16 to move through the supporting rod 14, when the two arc-shaped clamping plates 16 located in the hole 902 clamp the outer end surface of the test tube 10 in opposite directions, clamping and fixing the test tube 10, and the test tube 10 maintains a stable erection state during the chemical reaction, simultaneously two ring frames 11 the interior terminal surface hug closely the outer terminal surface of swivel ring 9 for swivel ring 9 maintains stable state of setting up, thereby be favorable to the student to observe to know two ring frames 11 of the interior chemistry reaction of test tube 10 when doing synchronous reverse movement, joint cover 13 can drive arc splint 16 through branch 14 and remove the clamping state to test tube 10 under reset spring 15's effect, thereby be convenient for arbitrary teacher will set up test tube 10 in ring frame 11 and take off from hole groove 902.
Specifically, as shown in fig. 1-4, the bidirectional transmission component includes a rotary sleeve 23, a compression spring 22, a handle 24 and a pressing cam 25, the rotary sleeve 23 is rotatably connected to the outer side of the shaft rod 21, the rotary sleeve 23 is sleeved on the outer sides of the two sliding sleeves 19 and rotatably connected to the two sliding sleeves 19, the handle 24 is fixedly disposed at the outer end of the rotary sleeve 23, the pressing cam 25 vertically distributed with the handle 24 is further fixedly disposed at the outer end of the rotary sleeve 23, an annular groove 901 matched with the pressing cam 25 for abutting is disposed at the outer portion of the rotary ring 9, the compression spring 22 is sleeved between the two sliding sleeves 19 at the outer side of the shaft rod 21, a driven protrusion 20 is fixedly disposed at the outer end of the sliding sleeve 19, a slide rail 17 matched with the two driven protrusions 20 for sliding is disposed inside the rotary sleeve 23, the slide rail 17 is spirally distributed at the inner side of the rotary sleeve 23, the rotary sleeve 23 is rotated by the handle 24, the driven protrusion 20 fixedly disposed at the outer end of the sliding sleeve 19 during the rotation process of the rotary sleeve 23 will slide rail 17 sliding along the slide rail 17 inside the rotary sleeve 23, and then make two revolve cover 23 and drive baffle 18 respectively and do synchronous motion with the annular frame 11 that baffle 18 is fixed, thereby be convenient for the teacher of wanting the lesson to the control of revolving the ring 9 state, when handle 24 is the horizontality, the cam 25 that supports that sets firmly on revolving cover 23 will be hugged closely and go into annular groove 901, rotate at will with the restriction revolves cover 23, thereby ensure that two annular frames 11 maintain stable constriction state, through the rotation to handle 24, can control the position state of annular frame 11, thereby be convenient for the teacher of wanting the lesson to use the control of device.
Specifically, as shown in fig. 1-3, the locking component includes a lock sleeve 8 and a T-shaped projection 3, the T-shaped projection 3 is fixedly disposed at two side ends of the movable leaf 2, a lock sleeve 8 is slidably connected to an outer side of the bracket 6, two notches matched with the T-shaped projection 3 are disposed inside the lock sleeve 8, the two notches are vertically distributed, the four movable leaves 2 are rotated from a horizontal state to a vertical state, then the lock sleeve 8 is slid downwards to enable the T-shaped projections 3 on the two adjacent movable leaves 2 to be embedded into the notches inside the lock sleeve 8, so as to achieve the purpose of limiting the movable leaves 2 to rotate freely, at this time, a square frame is formed between the four movable leaves 2 and the base 1, so as to achieve the purpose of being convenient for teachers to carry around, the lock sleeve 8 is attached to the top connection frame 7 in a magnetic attraction manner, when the movable leaves 2 are in an unfolded state, the lock sleeve 8 will be adsorbed on the top rack 7.
The previous description of the embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The oxygen multielement preparation demonstration device for the chemical experiment comprises a base (1) and is characterized in that a rotary ring (9) is arranged on the upper side of the base (1), annular frames (11) are arranged on two sides, located on the rotary ring (9), of the upper side of the base (1), the annular frames (11) are rotatably connected with the rotary ring (9), and four supports (6) for supporting the annular frames (11) are fixedly arranged at the upper end of the base (1);
the test tube fixing device is characterized in that three test tubes (10) are arranged inside the rotating ring (9), a hole groove (902) which is matched with the test tubes (10) to penetrate through is formed inside the rotating ring (9), opposite clamping parts which enable the test tubes (10) to be fixed are further arranged on the rotating ring (9), two baffle plates (18) are fixedly arranged at the upper end of the rotating ring (9), a shaft lever (21) penetrates through the two baffle plates (18), a sliding sleeve (19) is fixedly arranged at one opposite end of the two baffle plates (18), the sliding sleeve (19) is sleeved on the outer side of the shaft lever (21) and is in sliding connection with the shaft lever (21), and a bidirectional transmission part which is used for driving the two annular frames (11) to synchronously move is arranged on the shaft lever (21);
the upper end of support (6) has set firmly top and has connect frame (7), per two the top connects and has set firmly the alcohol burner that runs through swivel (9) between frame (7) and place platform (26), be provided with movable page or leaf board (2) around base (1), one side of the relative base (1) of movable page or leaf board (2) is rotated and is connected with linking frame (4), linking frame (4) link to each other with base (1) through sliding connection pole (5), and sliding connection pole (5) and base (1) sliding connection, be provided with on support (6) so that four closed closure parts of movable page or leaf board (2).
2. The oxygen multielement preparation demonstration device for chemical experiments as claimed in claim 1, wherein a retainer (12) is fixedly arranged at one end of the annular frame (11) opposite to the support (6), a retaining sleeve (601) corresponding to the retainer (12) is fixedly arranged at the inner end of the support (6), and the retaining sleeve (601) is in sliding connection with the retainer (12).
3. The oxygen multielement preparation demonstration device for chemical experiments as claimed in claim 1, wherein the clamping component comprises a clamping sleeve (13), a support rod (14), a return spring (15) and an arc-shaped clamping plate (16), the support rod (14) corresponding to the hole groove (902) is slidably arranged in the rotating ring (9), and the arc-shaped clamping plate (16) is fixedly arranged at one end of the support rod (14) positioned in the hole groove (902).
4. The oxygen multielement preparation demonstration device for the chemical experiment as claimed in claim 3, wherein a clamping sleeve (13) is fixedly arranged at the other end of the supporting rod (14), the clamping sleeve (13) is arranged on the inner side of the annular frame (11) in a U-shaped structure in a sliding manner, and a return spring (15) acting on the clamping sleeve (13) is sleeved on the outer side of the supporting rod (14).
5. The oxygen multielement preparation demonstration device for chemical experiments as claimed in claim 1, wherein the bidirectional transmission component comprises a rotary sleeve (23), a compression spring (22), a handle (24) and a pressing cam (25), the rotary sleeve (23) is rotatably connected to the outer side of the shaft rod (21), and the rotary sleeve (23) is sleeved on the outer sides of the two sliding sleeves (19) and is rotatably connected with the two sliding sleeves (19).
6. The oxygen multielement preparation demonstration device for the chemical experiment as claimed in claim 5, wherein a handle (24) is fixedly arranged at the outer end of the rotary sleeve (23), pressing cams (25) vertically distributed with the handle (24) are further fixedly arranged at the outer end of the rotary sleeve (23), an annular groove (901) matched with the pressing cams (25) in a butting mode is formed in the outer portion of the rotary ring (9), and a compression spring (22) is sleeved between the two sliding sleeves (19) on the outer side of the shaft rod (21).
7. The oxygen multielement preparation demonstration device for chemical experiments as claimed in claim 6, wherein the outer end of the sliding sleeve (19) is fixedly provided with a driven bump (20), the interior of the rotating sleeve (23) is provided with a sliding rail (17) which is matched with the two driven bumps (20) to slide, and the sliding rail (17) is spirally distributed on the inner side of the rotating sleeve (23).
8. The oxygen multielement preparation demonstration device for chemical experiments as claimed in claim 1, wherein the locking component comprises a lock sleeve (8) and a T-shaped projection (3), the T-shaped projection (3) is fixedly arranged at both side ends of the movable leaf plate (2), and the lock sleeve (8) is slidably connected to the outer side of the bracket (6).
9. The oxygen multielement preparation demonstration device for chemical experiments as claimed in claim 8, wherein two notches matched with the T-shaped bumps (3) are formed in the lock sleeve (8), and the two notches are vertically distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111035110.8A CN113706981A (en) | 2021-09-05 | 2021-09-05 | Oxygen multielement preparation demonstration device for chemical experiments |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111035110.8A CN113706981A (en) | 2021-09-05 | 2021-09-05 | Oxygen multielement preparation demonstration device for chemical experiments |
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| CN113706981A true CN113706981A (en) | 2021-11-26 |
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| CN208908113U (en) * | 2018-07-28 | 2019-05-28 | 宁夏大学 | Oxygen is produced and its integrated apparatus of property checking |
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