CN109036027B - Heating device for boiling point and pressure intensity experiments of high school physics - Google Patents
Heating device for boiling point and pressure intensity experiments of high school physics Download PDFInfo
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- CN109036027B CN109036027B CN201810962379.2A CN201810962379A CN109036027B CN 109036027 B CN109036027 B CN 109036027B CN 201810962379 A CN201810962379 A CN 201810962379A CN 109036027 B CN109036027 B CN 109036027B
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- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
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Abstract
The invention discloses a heating device for high and medium physical boiling point and pressure experiment, which comprises a height-adjustable experiment table, a flask supporting assembly and an alcohol lamp assembly, wherein the heights of the experiment table, the flask supporting assembly and the alcohol lamp assembly which are formed by the height-adjustable experiment table, the flask supporting assembly and the alcohol lamp assembly can be adjusted, the height of the experiment table is driven to be increased or decreased under the drive of a servo motor II, the height of the experiment table is convenient to adjust, the integral height of the flask supporting assembly is convenient to adjust under the drive of the servo motor I, the distance between a pump and a flask is adjusted and increased by utilizing the sliding of a lifting sliding sleeve I and a lifting sliding sleeve II on a lifting upright post, meanwhile, the heights of a supporting frame and an alcohol lamp are adjusted by rotating an adjusting handle and a lifting screw rod, the distance between the alcohol lamp and the flask is adjusted, the heating intensity of the flame of the alcohol lamp to the flask is, thereby, the influence of the air pressure and the heating temperature on the boiling point of the sample liquid in the flask is tested.
Description
Technical Field
The invention relates to the technical field of high school physics experiments, in particular to a heating device for high school physics boiling point and pressure experiments.
Background
In the current student learning process, the physics experiment is the indispensable teaching content of teaching, helps the student to understanding, memory etc. of knowledge of learning through real physics experiment, and it can be more convenient help student study, can both help mr and student in all aspects. In the development of a large environment, a physical experiment requires students to operate on corresponding equipment operation tables. However, the height of the existing physical experiment table is fixed and cannot be adjusted according to the height of a student, so that the experiment operation of the student is influenced, and the experiment difficulty is increased; in addition, during the physical experiment, often need do all kinds of heating experiments, when heating the experiment, the heating frame need be used usually, can support alcohol burner and heated object through the heating frame, but the heating frame among the prior art is a simple iron support body, it is comparatively inconvenient to adjust the heating position of alcohol burner, consequently can not be better utilize the outer flame of alcohol burner to heat, heating efficiency is comparatively low, meanwhile, it is difficult to adjust the distance between the flame of alcohol burner and the flask of treating the heating in a flexible way, especially when carrying out the experimental operation of liquid boiling point and pressure, lack the device that can adjust each component height in a flexible way.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a heating device for high and medium physical boiling point and pressure experiments to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a heating device for boiling point and pressure experiment of high school physics, includes but height-adjusting's laboratory bench, flask supporting component and alcohol burner subassembly, but flask supporting component installs on height-adjusting's laboratory bench, and the alcohol burner subassembly is installed in the laboratory bench bottom of flask supporting component below.
As a further scheme of the invention, the experiment table comprises a base, a supporting sleeve, a supporting spring, a sliding block, a supporting rod, an experiment table top, a servo motor II, a rotating screw rod, a telescopic sleeve, a threaded end cover, a stop block and a lifting sleeve, wherein the experiment table top is horizontally arranged above the base, the experiment table top and the base are connected through four supporting legs arranged at four corners, each supporting leg comprises a supporting sleeve, a supporting spring, a sliding block and a supporting rod, the bottom of the supporting sleeve is welded on the base, the bottom of the supporting rod is inserted into the supporting sleeve, the bottom end of the supporting rod is connected with the sliding block, the sliding block is arranged in the supporting sleeve in a sliding mode, the supporting sleeve below the sliding block is provided with the supporting.
As a further scheme of the invention, the second servo motor is arranged at the bottom of the experiment table, a motor shaft of the second servo motor is connected with a rotating screw rod, the rotating screw rod is arranged in a screw hole in the middle of a threaded end cover in a penetrating manner, the threaded end cover is fixed at the top end of a lifting sleeve, and the lifting sleeve is fixed on a base.
As a further scheme of the invention, a telescopic sleeve is arranged outside the rotary screw, the top end of the telescopic sleeve is connected with a motor shell of the servo motor II, and the bottom end of the telescopic sleeve is connected with the top of the lifting sleeve.
As a further scheme of the invention, the flask supporting assembly comprises a servo motor I, a gear, a rack, a lifting upright post, a locking screw I, a lifting sliding sleeve I, a locking screw II, a lifting sliding sleeve II, an additional pump, a pumping pipe, a thermometer, a pressure gauge, a flask, an explosion-proof sheath, a top pressing block, a top pressing screw, a bearing plate, a heating separation net and a fixing frame, the rack is fixed at the bottom of the lifting upright post, the lifting upright post penetrates through and is vertically arranged on the experiment table top, the side surface of the rack is engaged with the connecting gear, the gear is arranged on a motor shaft of the servo motor I, the first servo motor and a motor shaft thereof are all arranged on a fixing frame, the fixing frame is welded at the bottom of the experiment table, a lifting sliding sleeve I and a lifting sliding sleeve II are sleeved on the lifting upright column at the top of the experiment table board, a locking screw I is arranged on one side face of the lifting sliding sleeve, and a locking screw II is arranged on the two side faces of the lifting sliding sleeve.
As a further scheme of the invention, an additional pump is arranged on a supporting plate connected with two sides of the lifting sliding sleeve, the additional pump is communicated with a flask through a pumping pipe, a thermometer and a pressure gauge are arranged on the flask, the flask is placed on a bearing plate connected with one side of the lifting sliding sleeve, an explosion-proof sheath is arranged outside the flask, the explosion-proof sheath consists of a left part and a right part and surrounds the flask, a jacking screw is arranged outside the explosion-proof sheath, a jacking block at the front end of the jacking screw is abutted against the explosion-proof sheath, and the jacking screw is arranged on a fixing block above the bearing plate in a threaded manner.
As a further scheme of the invention, the heating separation net is arranged on the bearing plate at the bottom of the flask, the upper end surface of the experiment table top is provided with an embedded groove for placing the bearing plate, a combustion rack is arranged below the embedded groove, and the alcohol lamp assembly is arranged at the bottom of the experiment table below the combustion rack.
As a further scheme of the invention, the alcohol lamp assembly comprises a guide rod, a support frame, a buffer spring, a buffer seat, an alcohol lamp, a shaft sleeve, a lifting screw, an adjusting handle, a fixed sleeve and an expansion bracket, wherein the fixed sleeve is mounted at the upper part of the alcohol lamp, the side surface of the fixed sleeve is hinged with the expansion bracket, and the other end of the expansion bracket is hinged with the bottom of the experiment table board.
As a further scheme of the invention, a buffer seat is fixed at the bottom of the alcohol lamp, a buffer spring is installed between the buffer seat and the base, a support frame is fixed at the bottom side of the alcohol lamp, one side of the support frame is slidably arranged on the guide rod, the other side of the support frame is in threaded connection with a lifting screw rod, the top end of the lifting screw rod is connected with an adjusting handle, and the bottom end of the lifting screw rod is rotatably arranged in a shaft sleeve on the base.
In conclusion, compared with the prior art, the invention has the following beneficial effects:
the heating device for the high and medium physical boiling point and pressure experiment of the invention has the advantages that the heights of the experiment table, the flask supporting component and the alcohol lamp component which are formed by the heating device can be adjusted, the height of the experiment table is driven to rise or fall under the driving of the servo motor II, so that the height of the experiment table is convenient to adjust, the integral height of the flask supporting component is convenient to adjust under the driving of the servo motor I, the distance between the pump and the flask is adjusted and increased by utilizing the sliding of the lifting sliding sleeve I and the lifting sliding sleeve II on the lifting upright post, meanwhile, the heights of the supporting frame and the alcohol lamp are adjusted by rotating the adjusting handle and the lifting screw rod, the distance between the alcohol lamp and the flask is adjusted, the heating intensity of the flame of the alcohol lamp to the flask is adjusted, and the experiment is matched with the experiment that different pressures are increased when a pump is pumped into the flask, so that the influence of the air pressure and the heating temperature on the boiling point of the sample liquid in the flask is avoided.
To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the structure of the alcohol burner assembly of the present invention.
FIG. 3 is a schematic view of the structure of the flask support assembly of the present invention.
Fig. 4 is a schematic structural view of the fixing frame of the present invention.
Reference numerals: 1-base, 2-support sleeve, 3-support spring, 4-slide block, 5-support rod, 6-servo motor I, 7-gear, 8-rack, 9-experiment table top, 10-lifting upright post, 11-locking screw I, 12-lifting sliding sleeve I, 13-locking screw II, 14-lifting sliding sleeve II, 15-booster pump, 16-pumping pipe, 17-thermometer, 18-pressure gauge, 19-flask, 20-explosion-proof sheath, 21-top pressing block, 22-top pressing screw, 23-bearing plate, 24-heating separation net, 25-embedded groove, 26-combustion rack, 27-servo motor II, 28-rotary screw, 29-telescopic sleeve, 30-threaded end cover, 31-stop block, 32-lifting sleeve, 33-guide rod, 34-support frame, 35-buffer spring, 36-buffer seat, 37-alcohol lamp, 38-shaft sleeve, 39-lifting screw, 40-adjusting handle, 41-fixing sleeve, 42-telescopic frame and 43-fixing frame.
Detailed Description
The technical solution of the present invention is further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-4, a heating device for high and medium physical boiling point and pressure experiment mainly comprises a height-adjustable experiment table, a flask supporting assembly and an alcohol lamp assembly, wherein the flask supporting assembly is installed on the height-adjustable experiment table, the alcohol lamp assembly is installed at the bottom of the experiment table below the flask supporting assembly, and the alcohol lamp assembly heats a flask 19 on the flask supporting assembly.
The experiment table comprises a base 1, a supporting sleeve 2, a supporting spring 3, a sliding block 4, a supporting rod 5, an experiment table top 9, a servo motor II 27, a rotating screw 28, a telescopic sleeve 29, a threaded end cover 30, a stop block 31 and a lifting sleeve 32, wherein the experiment table top 9 is horizontally arranged above the base 1, the experiment table top 9 and the base 1 are connected through four supporting legs arranged at four corners, the supporting legs are composed of the supporting sleeve 2, the supporting spring 3, the sliding block 4 and the supporting rod 5, the bottom of the supporting sleeve 2 is welded on the base 1, the bottom of the supporting rod 5 is inserted into the supporting sleeve 2 and is connected with the sliding block 4 at the bottom end of the supporting rod 5, the sliding block 4 is arranged in the supporting sleeve 2 and is arranged in the supporting sleeve 2 below the sliding block 4, and the top end of.
The second servo motor 27 is installed at the bottom of the experiment table top 9, a motor shaft of the second servo motor 27 is connected with the rotary screw 28, the rotary screw 28 is arranged in a screw hole in the middle of the threaded end cover 30 in a penetrating mode, the threaded end cover 30 is fixed at the top end of the lifting sleeve 32, the lifting sleeve 32 is fixed on the base 1, when the motor shaft of the second servo motor 27 drives the rotary screw 28 to rotate forwards or backwards, the rotary screw 28 rotates and ascends or descends relative to the threaded end cover 30, accordingly, the height of the experiment table top 9 is driven to ascend or descend, and the height of the experiment table top.
Preferably, rotatory screw rod 28 outside is equipped with telescope tube 29, and the motor casing of telescope tube 29 top and servo motor two 27 is connected, and telescope tube 29 bottom is connected with lift sleeve 32 top, and telescope tube 29 sets up outside rotatory screw rod 28, effectively keeps apart, protects, avoids rotatory screw rod 28 to contact with student's limbs when rotatory, improves the security of using.
The flask supporting assembly comprises a servo motor I6, a gear 7, a rack 8, a lifting upright post 10, a locking screw rod I11, a lifting sliding sleeve I12, a locking screw rod II 13, a lifting sliding sleeve II 14, an additional pump 15, a pumping pipe 16, a thermometer 17, a pressure gauge 18, a flask 19, an explosion-proof sheath 20, a top pressing block 21, a top pressing screw rod 22, a bearing plate 23, a heating separation net 24 and a fixing frame 43, wherein the rack 8 is fixed at the bottom of the lifting upright post 10, the lifting upright post 10 penetrates through and is vertically arranged on an experiment table top 9, the side surface of the rack 8 is meshed with the gear 7, the gear 7 is arranged on a motor shaft of the servo motor I6, the servo motor I6 and the motor shaft thereof are both erected on the fixing frame 43, the fixing frame 43 is welded at the bottom of the experiment table top 9, the lifting upright post 10 at the top of the experiment table top is sleeved with the lifting, and a second locking screw 13 is arranged on the side surface of the second lifting sliding sleeve 14, and the first lifting sliding sleeve 12 and the second lifting sliding sleeve 14 are locked and fixed through the first locking screw 11 and the second locking screw 13.
The supporting plate connected with the two 14 side faces of the lifting sliding sleeve is provided with the booster pump 15, the booster pump 15 is communicated with the flask 19 through a pumping pipe 16, the flask 19 is provided with a thermometer 17 and a pressure gauge 18, the flask 19 is placed on a bearing plate 23 connected with the one 12 side face of the lifting sliding sleeve, an anti-explosion sheath 20 is arranged outside the flask 19, the anti-explosion sheath 20 is composed of a left part and a right part and surrounds the flask 19, a jacking screw 22 is arranged outside the anti-explosion sheath 20, a jacking block 21 at the front end of the jacking screw 22 abuts against the anti-explosion sheath 20, the jacking screw 22 is arranged on a fixing block above the bearing plate 23 in a threaded mode, and when the jacking screw 22 is rotated, the jacking screw 22 moves back and forth to push the anti-explosion sheath 20 to be tightly held outside the flask 19.
Install heating on the loading board 23 of flask 19 bottom and separate net 24, experiment table surface 9 up end is equipped with the embedded groove 25 that is used for loading board 23 to put into, and embedded groove 25 below is equipped with burning frame 26, the laboratory bench bottom of burning frame 26 below is installed to the alcohol burner subassembly.
The alcohol lamp component comprises a guide rod 33, a support frame 34, a buffer spring 35, a buffer seat 36, an alcohol lamp 37, a shaft sleeve 38, a lifting screw rod 39, an adjusting handle 40, a fixed sleeve 41 and an expansion bracket 42, wherein the fixed sleeve 41 is installed on the upper part of the alcohol lamp 37, the expansion bracket 42 is hinged to the side surface of the fixed sleeve 41, the other end of the expansion bracket 42 is hinged to the bottom of the experiment table board 9, the buffer seat 36 is fixed at the bottom of the alcohol lamp 37, the buffer spring 35 is installed between the buffer seat 36 and the base 1, the support frame 34 is fixed at the bottom side of the alcohol lamp 37, one side of the support frame 34 is arranged on the guide rod 33 in a sliding manner, the lifting screw rod 39 is connected with the other side of the support frame 34 in a threaded manner, the top end of the lifting screw rod 39 is connected with the adjusting handle 40, further, the distance between the alcohol burner 37 and the flask 19 was adjusted, the intensity of heating the flask 19 by the flame of the alcohol burner 37 was adjusted, and the influence of the atmospheric pressure and the heating temperature on the boiling point of the sample liquid in the flask 19 was examined by adding different pressures of the pump 15 to the flask 19.
The technical principle of the present invention has been described above with reference to specific embodiments, which are merely preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. Other embodiments of the invention will occur to those skilled in the art without the exercise of inventive faculty, and such will fall within the scope of the invention.
Claims (6)
1. A heating device for high and medium physical boiling point and pressure experiment is characterized by comprising a height-adjustable experiment table, a flask supporting assembly and an alcohol lamp assembly, wherein the flask supporting assembly is arranged on the height-adjustable experiment table, and the alcohol lamp assembly is arranged at the bottom of the experiment table below the flask supporting assembly;
the experiment table comprises a base (1), a supporting sleeve (2), a supporting spring (3), a sliding block (4), a supporting rod (5), an experiment table top (9), a servo motor II (27), a rotary screw rod (28), a telescopic sleeve (29), a threaded end cover (30), a stop block (31) and a lifting sleeve (32), wherein the experiment table top (9) is horizontally arranged above the base (1), the experiment table top (9) is connected with the base (1) through four supporting legs arranged at four corners, the supporting legs are composed of the supporting sleeve (2), the supporting spring (3), the sliding block (4) and the supporting rod (5), the bottom of the supporting sleeve (2) is welded on the base (1), the bottom of the supporting rod (5) is inserted into the supporting sleeve (2), the bottom of the supporting rod (5) is connected with the sliding block (4), the sliding block (4) is arranged in the supporting sleeve (2) in a manner, and the supporting spring (3) is arranged in the supporting sleeve (, the top end of the supporting rod (5) is fixedly connected with the bottom end of the experiment table top (9);
the flask supporting assembly comprises a servo motor I (6), a gear (7), a rack (8), a lifting upright post (10), a locking screw I (11), a lifting sliding sleeve I (12), a locking screw II (13), a lifting sliding sleeve II (14), an additional pump (15), a pumping pipe (16), a thermometer (17), a pressure gauge (18), a flask (19), an explosion-proof sheath (20), a jacking block (21), a jacking screw (22), a bearing plate (23), a heating separation net (24) and a fixing frame (43), wherein the rack (8) is fixed at the bottom of the lifting upright post (10), the lifting upright post (10) penetrates through and is vertically arranged on an experiment table top (9), the side surface of the rack (8) is meshed with the gear (7), the gear (7) is arranged on a motor shaft of the servo motor I (6), and the servo motor shaft of the servo motor I (6) are both erected on the fixing frame (43), the fixing frame (43) is welded at the bottom of the experiment table top (9), a lifting sliding sleeve I (12) and a lifting sliding sleeve II (14) are sleeved on the lifting upright post (10) at the top of the experiment table top (9), a locking screw I (11) is arranged on the side surface of the lifting sliding sleeve I (12), and a locking screw II (13) is arranged on the side surface of the lifting sliding sleeve II (14);
alcohol burner subassembly includes guide arm (33), support frame (34), buffer spring (35), buffering seat (36), alcohol burner (37), axle sleeve (38), lifting screw (39), adjustment handle (40), fixed cover (41) and expansion bracket (42), fixed cover (41) of alcohol burner (37) upper portion installation, fixed cover (41) side articulated expansion bracket (42), expansion bracket (42) other end articulates in experiment mesa (9) bottom.
2. The heating device for the high and medium physical boiling point and pressure experiment as recited in claim 1, wherein the second servo motor (27) is installed at the bottom of the experiment table (9), a motor shaft of the second servo motor (27) is connected with a rotating screw rod (28), the rotating screw rod (28) is arranged in a screw hole in the middle of a threaded end cover (30) in a penetrating manner, the threaded end cover (30) is fixed at the top end of a lifting sleeve (32), and the lifting sleeve (32) is fixed on the base (1).
3. The experimental heating device for the boiling point and the pressure of high school physics according to claim 2, characterized in that, the outside of rotatory screw rod (28) is equipped with telescopic sleeve (29), and telescopic sleeve (29) top is connected with the motor casing of servo motor two (27), and telescopic sleeve (29) bottom is connected with lift sleeve (32) top.
4. The experimental heating device for high and medium physical boiling point and pressure according to claim 1, the anti-explosion vacuum bottle opener is characterized in that an increasing pump (15) is installed on a supporting plate connected with the side face of the second lifting sliding sleeve (14), the increasing pump (15) is communicated with a flask (19) through a pumping pipe (16), a thermometer (17) and a pressure gauge (18) are installed on the flask (19), the flask (19) is placed on a bearing plate (23) connected with the side face of the first lifting sliding sleeve (12), an anti-explosion sheath (20) is arranged outside the flask (19), the anti-explosion sheath (20) is composed of a left part and a right part and surrounds the flask (19), a jacking screw rod (22) is arranged on the outer side of the anti-explosion sheath (20), a jacking block (21) at the front end of the jacking screw rod (22) abuts against the anti-explosion sheath (20), and the jacking screw rod (22) is installed on a fixing block.
5. The heating device for the high and medium physical boiling point and pressure experiment as claimed in claim 4, wherein a heating screen (24) is installed on the bearing plate (23) at the bottom of the flask (19), an embedded groove (25) for placing the bearing plate (23) is formed in the upper end surface of the experiment table top (9), a burning rack (26) is arranged below the embedded groove (25), and the alcohol lamp assembly is installed at the bottom of the experiment table below the burning rack (26).
6. The heating device for the high and medium physical boiling point and pressure experiment according to claim 5, wherein a buffer seat (36) is fixed at the bottom of the alcohol lamp (37), a buffer spring (35) is installed between the buffer seat (36) and the base (1), a support frame (34) is fixed at the bottom side of the alcohol lamp (37), one side of the support frame (34) is slidably arranged on the guide rod (33), the other side of the support frame (34) is in threaded connection with a lifting screw rod (39), the top end of the lifting screw rod (39) is connected with an adjusting handle (40), and the bottom end of the lifting screw rod (39) is rotatably arranged in a shaft sleeve (38) on the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810962379.2A CN109036027B (en) | 2018-08-22 | 2018-08-22 | Heating device for boiling point and pressure intensity experiments of high school physics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810962379.2A CN109036027B (en) | 2018-08-22 | 2018-08-22 | Heating device for boiling point and pressure intensity experiments of high school physics |
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| Publication Number | Publication Date |
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| CN109036027A CN109036027A (en) | 2018-12-18 |
| CN109036027B true CN109036027B (en) | 2021-03-30 |
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| CN201810962379.2A Expired - Fee Related CN109036027B (en) | 2018-08-22 | 2018-08-22 | Heating device for boiling point and pressure intensity experiments of high school physics |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113210028A (en) * | 2021-04-28 | 2021-08-06 | 高淑芳 | Pharmacy laboratory bench device |
| CN114526855A (en) * | 2022-02-21 | 2022-05-24 | 安徽农业大学 | But mechanics measurement testboard that portable was adjusted |
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|---|---|---|---|---|
| CN201126654Y (en) * | 2007-12-10 | 2008-10-01 | 王超伦 | Teaching appliances for demonstrating relation of boiling point and pressure intensity |
| CN201955970U (en) * | 2011-03-30 | 2011-08-31 | 湖州师范学院 | Device for demonstrating relationship between boiling points and pressures of liquids |
| CN204841751U (en) * | 2015-07-21 | 2015-12-09 | 临沂大学 | Heating device for chemistry experiments |
| CN205451622U (en) * | 2015-12-29 | 2016-08-10 | 哈斯通拉嘎 | Demonstration teaching aid of boiling point and pressure |
| CN206460694U (en) * | 2017-06-22 | 2017-09-01 | 上海杨浦区五角星亲子进修学校 | Boiling point and pressure relation demonstration teaching aid |
| CN107705678A (en) * | 2017-11-22 | 2018-02-16 | 王彩英 | A kind of senior middle school physics teaching boiling point and pressure intensity testing teaching aid |
-
2018
- 2018-08-22 CN CN201810962379.2A patent/CN109036027B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201126654Y (en) * | 2007-12-10 | 2008-10-01 | 王超伦 | Teaching appliances for demonstrating relation of boiling point and pressure intensity |
| CN201955970U (en) * | 2011-03-30 | 2011-08-31 | 湖州师范学院 | Device for demonstrating relationship between boiling points and pressures of liquids |
| CN204841751U (en) * | 2015-07-21 | 2015-12-09 | 临沂大学 | Heating device for chemistry experiments |
| CN205451622U (en) * | 2015-12-29 | 2016-08-10 | 哈斯通拉嘎 | Demonstration teaching aid of boiling point and pressure |
| CN206460694U (en) * | 2017-06-22 | 2017-09-01 | 上海杨浦区五角星亲子进修学校 | Boiling point and pressure relation demonstration teaching aid |
| CN107705678A (en) * | 2017-11-22 | 2018-02-16 | 王彩英 | A kind of senior middle school physics teaching boiling point and pressure intensity testing teaching aid |
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