CN109036027A - A kind of boiling point and pressure intensity testing heating device of high school physics - Google Patents
A kind of boiling point and pressure intensity testing heating device of high school physics Download PDFInfo
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- CN109036027A CN109036027A CN201810962379.2A CN201810962379A CN109036027A CN 109036027 A CN109036027 A CN 109036027A CN 201810962379 A CN201810962379 A CN 201810962379A CN 109036027 A CN109036027 A CN 109036027A
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- flask
- sleeve
- lifting
- alcolhol burner
- screw
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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
- G09B23/06—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
- G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases
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Abstract
The invention discloses a kind of boiling points of high school physics and pressure intensity testing heating device, including height-adjustable experimental bench, flask support component and alcolhol burner component, its experimental bench formed, the height of flask support component and alcolhol burner component three parts is adjustable, under the driving of servo motor two, drive being raised and lowered for experiment table surface height, convenient for adjusting the height of experiment table top, under the driving of servo motor one, convenient for adjusting the whole height of flask support component, sliding of the sliding sleeve two on lifting column is gone up and down using lifting sliding sleeve one, adjust the spacing between increasing pump and flask, at the same time, the height of support frame and alcolhol burner is adjusted by rotation regulation handle and lifting screw, and adjust the distance between alcolhol burner and flask, adjust the intensity that the flame of alcolhol burner heats flask, and increasing pump is cooperated to blast Different pressure in flask, thus the experiment influenced on air pressure and heating temperature on sample liquid boiling point in flask.
Description
Technical field
The present invention relates to physics experiments of high school technical field, more specifically, it relates to a kind of boiling point of high school physics and
Pressure intensity testing heating device.
Background technique
In current students'learning, Physical Experiment is the essential content of courses of teaching, passes through true object
Reason experiment helps understanding, memory etc. of the student to knowledge, the help student study that it can be more convenient, in all fields
It can help academics and students.In the development of overall situation, Physical Experiment needs student to carry out on corresponding equipment operation platform
Operation.But the height of existing physical experiment table is fixed, can not be adjusted according to the height of student, influence student
Experimental implementation is carried out, experiment difficulty is increased;In addition, in Physical Experiment, it is often necessary to do all kinds of Heating Experiments, heated
When experiment, it usually needs heating frame is used, alcolhol burner and heating object can be supported by heating frame, but the prior art
In heating frame be a simple irony frame body, the heating location of adjusting alcolhol burner is more inconvenient, therefore cannot be preferable
The flame envelope for making good use of alcolhol burner heated, heating efficiency is more low, at the same time, it is difficult to the fire of flexible modulation alcolhol burner
Flame and the distance between flask to be heated, especially when carrying out the experimental implementation of boiling point of liquid and pressure, shortage can spirit
The device living for adjusting each composition Partial Height.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide the boiling point and pressure reality of a kind of high school physics
It tests and uses heating device, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of boiling point and pressure intensity testing heating device of high school physics, including height-adjustable experimental bench, flask support group
Part and alcolhol burner component, flask support component are mounted on height-adjustable experimental bench, and alcolhol burner component is mounted on flask
Experimental bench bottom below support component.
As a further solution of the present invention, the experimental bench includes pedestal, stop sleeve, support spring, sliding block, support
Bar, experiment table top, servo motor two, rotary screw, telescopic, thread ending cover, block and jacking sleeve, the experiment table top water
The flat side of being set on the base tests and is connected between table top and pedestal by four supporting legs for being set to quadrangle, supporting leg by
Stop sleeve, support spring, sliding block and support bar group are at stop sleeve bottom is welded on pedestal, support rod bottom insertion branch
In support set cylinder and support rod bottom end connection sliding block, sliding block are slidably arranged in peace in the stop sleeve in stop sleeve and below sliding block
Equipped with support spring, supporting bar top is fixedly connected with experiment table top bottom end.
As a further solution of the present invention, the servo motor two is mounted on experiment table top bottom, servo motor two
Motor axis connection rotary screw, rotary screw are threaded through in the screw hole in the middle part of thread ending cover, and thread ending cover is fixed on jacking sleeve
Top, jacking sleeve are fixed on the base.
As a further solution of the present invention, telescopic, telescopic top and servo electricity are equipped with outside the rotary screw
The motor casing of machine two is connected, and is connected at the top of telescopic bottom end and jacking sleeve.
As a further solution of the present invention, the flask support component includes servo motor one, gear, rack gear, lifting
Column, locking screw one, lifting sliding sleeve one, locking screw two, lifting sliding sleeve two, increasing pump, pumping line, thermometer, pressure gauge,
Flask, explosive-proof jacket, press block, top pressure screw rod, loading plate, heating filter and fixed frame, the rack gear are fixed on lifting column
Bottom, lifting column runs through and is vertically arranged on experiment table top, and connection gear is engaged in rack gear side, and gear is mounted on servo
On the motor shaft of motor one, the servo motor one and its motor shaft are erected on fixed frame, and fixed frame is welded on experimental bench
Face bottom, it is described experiment mesa top lifting column on be arranged with lifting sliding sleeve one and lifting sliding sleeve two, go up and down sliding sleeve side
Face is equipped with locking screw one, and lifting sliding sleeve two side faces are equipped with locking screw two.
As a further solution of the present invention, increasing pump is installed in the support plate of the lifting sliding sleeve two side faces connection,
Increasing pump is connected to flask by pumping line, and thermometer and pressure gauge are equipped on flask, and flask is placed on lifting sliding sleeve one side
On the loading plate of connection, explosive-proof jacket is equipped with outside flask, explosive-proof jacket is that left and right two parts are formed and encircled outside flask,
Top pressure screw rod is equipped on the outside of explosive-proof jacket, press block and the explosive-proof jacket of top pressure screw rod front end offset, the installation of top pressure screw rod screw thread
Above the loading plate on fixed block.
As a further solution of the present invention, heating filter, the experiment are installed on the loading plate of the drag
Table top upper surface is equipped with the embedded groove for loading plate merging, and burning rack, the alcolhol burner component installation are equipped with below embedded groove
Experimental bench bottom below burning rack.
As a further solution of the present invention, the alcolhol burner component include guide rod, support frame, buffer spring, buffing pad,
Fixing sleeve, fixing sleeve are installed in alcolhol burner, axle sleeve, lifting screw, regulation handle, fixing sleeve and expansion bracket, the alcolhol burner top
It is hinged at expansion bracket, the expansion bracket other end is hinged on experiment table top bottom.
As a further solution of the present invention, the alcolhol burner bottom is fixed with buffing pad, pacifies between buffing pad and pedestal
Equipped with buffer spring, the alcolhol burner bottom side is fixed with support frame, and support frame side is slidably arranged on guide rod, and support frame is another
Side is threadedly coupled lifting screw, and lifting screw top connects regulation handle, and lifting screw bottom end is rotatably arranged on the axis on pedestal
In set.
In conclusion compared with the prior art, the invention has the following beneficial effects:
The boiling point and pressure intensity testing heating device of high school physics of the invention, composition experimental bench, flask support component with
And the height of alcolhol burner component three parts is adjustable, under the driving of servo motor two, drives the raising of experiment table surface height
Or reduce, convenient for adjusting the height of experiment table top, under the driving of servo motor one, convenient for adjusting the entirety of flask support component
Highly, sliding of the sliding sleeve two on lifting column is gone up and down using lifting sliding sleeve one, adjusts the spacing between increasing pump and flask, with
This adjusts the height of support frame and alcolhol burner simultaneously, by rotation regulation handle and lifting screw, and adjusts alcolhol burner and flask
The distance between, the intensity that the flame of alcolhol burner heats flask is adjusted, and it is different in flask to cooperate increasing pump to be blown into
Pressure, thus the experiment influenced on air pressure and heating temperature on sample liquid boiling point in flask.
In order to explain the structural features and functions of the invention more clearly, come with reference to the accompanying drawing with specific embodiment to this hair
It is bright to be described in detail.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of alcolhol burner component in the present invention.
Fig. 3 is the structural schematic diagram of flask support component in the present invention.
Fig. 4 is the structural schematic diagram of fixed frame in the present invention.
Appended drawing reference: 1- pedestal, 2- stop sleeve, 3- support spring, 4- sliding block, 5- support rod, 6- servo motor one, 7-
Gear, 8- rack gear, 9- experiment table top, 10- lifting column, 11- locking screw one, 12- lifting sliding sleeve one, 13- locking screw two,
14- goes up and down sliding sleeve two, 15- increasing pump, 16- pumping line, 17- thermometer, 18- pressure gauge, 19- flask, 20- explosive-proof jacket, 21-
Press block, 22- top pressure screw rod, 23- loading plate, 24- heating filter, 25- embedded groove, 26- burning rack, 27- servo motor two,
28- rotary screw, 29- telescopic, 30- thread ending cover, 31- block, 32- jacking sleeve, 33- guide rod, 34- support frame, 35- are slow
It is flexible to rush spring, 36- buffing pad, 37- alcolhol burner, 38- axle sleeve, 39- lifting screw, 40- regulation handle, 41- fixing sleeve, 42-
Frame, 43- fixed frame.
Specific embodiment
The following further describes the technical solution of the present invention in the following with reference to the drawings and specific embodiments.
Referring to Fig. 1-4, a kind of boiling point and pressure intensity testing heating device of high school physics mainly include height-adjustable
Experimental bench, flask support component and alcolhol burner component, flask support component are mounted on height-adjustable experimental bench, alcohol
Lamp group part is mounted on the experimental bench bottom below flask support component, and alcolhol burner component adds the flask 19 in flask support component
Heat.
The experimental bench includes pedestal 1, stop sleeve 2, support spring 3, sliding block 4, support rod 5, experiment table top 9, servo
Motor 2 27, rotary screw 28, telescopic 29, thread ending cover 30, block 31 and jacking sleeve 32, the experiment table top 9 are horizontal
Be arranged pedestal 1 above, test and pass through four supporting legs for being set to quadrangle between table top 9 and pedestal 1 and be connected, supporting leg by
Stop sleeve 2, support spring 3, sliding block 4 and support rod 5 form, and 2 bottom of stop sleeve is welded on pedestal 1,5 bottom of support rod
It is inserted into stop sleeve 2 and 5 bottom end connection sliding block 4 of support rod, sliding block 4 is slidably arranged in stop sleeve 2 and 4 lower section of sliding block
Support spring 3 is installed, 5 top of support rod is fixedly connected with experiment 9 bottom end of table top in stop sleeve 2.
The servo motor 2 27 is mounted on experiment 9 bottom of table top, the motor axis connection rotary screw of servo motor 2 27
28, rotary screw 28 is threaded through in the screw hole at 30 middle part of thread ending cover, and thread ending cover 30 is fixed on 32 top of jacking sleeve, lifting
Sleeve 32 is fixed on pedestal 1, when servo motor 2 27 motor shaft drive rotary screw 28 forward or reverse when, rotary screw
28 rotate and rise or fall relative to thread ending cover 30, so that being raised and lowered for experiment 9 height of table top is driven, convenient for adjusting
Test the height of table top 9.
Preferably, telescopic 29, the electricity on telescopic 29 top and servo motor 2 27 are equipped with outside the rotary screw 28
Casing is connected, and is connected at the top of 29 bottom end of telescopic and jacking sleeve 32, and telescopic 29 is arranged outside rotary screw 28, into
Row is effectively isolated, protects, and avoids rotary screw 28 from being in contact when rotating with student's limbs, improves the safety used.
The flask support component include servo motor 1, gear 7, rack gear 8, lifting column 10, locking screw 1,
It goes up and down sliding sleeve 1, locking screw 2 13, lifting sliding sleeve 2 14, increasing pump 15, pumping line 16, thermometer 17, pressure gauge 18, burn
Bottle 19, explosive-proof jacket 20, press block 21, top pressure screw rod 22, loading plate 23, heating filter 24 and fixed frame 43, the rack gear 8 are solid
It is scheduled on the bottom of lifting column 10, lifting column 10 runs through and is vertically arranged on experiment table top 9, the engagement connection of 8 side of rack gear
Gear 7, gear 7 are mounted on the motor shaft of servo motor 1, and the servo motor 1 and its motor shaft are erected at fixation
On frame 43, fixed frame 43 is welded on experiment 9 bottom of table top, is arranged with lifting on the lifting column 10 at 9 top of experiment table top
Sliding sleeve 1 and lifting sliding sleeve 2 14, lifting one 12 side of sliding sleeve are equipped with locking screw 1, and lifting 2 14 side of sliding sleeve is equipped with
Locking screw 2 13 realizes the lock that sliding sleeve 2 14 is gone up and down to lifting sliding sleeve 1 by locking screw 1 and locking screw 2 13
It fastens.
Increasing pump 15 is installed, increasing pump 15 passes through pumping line 16 in the support plate of lifting 2 14 side of sliding sleeve connection
It is connected to flask 19, thermometer 17 and pressure gauge 18 are installed on flask 19, flask 19 is placed on the connection of lifting one 12 side of sliding sleeve
Loading plate 23 on, outside flask 19 be equipped with explosive-proof jacket 20, explosive-proof jacket 20 be left and right two parts form and encircle in flask
Outside 19, top pressure screw rod 22 is equipped on the outside of explosive-proof jacket 20, press block 21 and the explosive-proof jacket 20 of 22 front end of top pressure screw rod offset,
Top pressure screw rod 22 is threadably mounted on 23 top fixed block of loading plate, when rotating top pressure screw rod 22, is moved before and after top pressure screw rod 22
It moves that explosive-proof jacket 20 is pushed to hold tightly outside flask 19, fixed effect is played to flask 19.
Heating filter 24 is installed, 9 upper surface of experiment table top, which is equipped with, to be used on the loading plate 23 of 19 bottom of flask
Burning rack 26 is equipped with below the embedded groove 25 that loading plate 23 is placed in, embedded groove 25, the alcolhol burner component is mounted on burning rack
The experimental bench bottom of 26 lower sections.
The alcolhol burner component includes guide rod 33, support frame 34, buffer spring 35, buffing pad 36, alcolhol burner 37, axle sleeve
38, lifting screw 39, regulation handle 40, fixing sleeve 41 and expansion bracket 42, fixing sleeve 41 is installed on 37 top of alcolhol burner, fixed
Set 41 is hinged at expansion bracket 42, and 42 other end of expansion bracket is hinged on experiment 9 bottom of table top, and 37 bottom of alcolhol burner is fixed with
Buffing pad 36 is equipped with buffer spring 35 between buffing pad 36 and pedestal 1,37 bottom side of alcolhol burner is fixed with support frame 34,
34 side of support frame is slidably arranged on guide rod 33, and 34 other side of support frame is threadedly coupled lifting screw 39, and lifting screw 39 pushes up
End connection regulation handle 40,39 bottom end of lifting screw is rotatably arranged in the axle sleeve 38 on pedestal 1, by rotating regulation handle 40
The height of support frame 34 and alcolhol burner 37 is adjusted with lifting screw 39, and then adjusts the distance between alcolhol burner 37 and flask 19,
The intensity that the flame of alcolhol burner 37 heats flask 19 is adjusted, and increasing pump 15 is cooperated to be blown into the different pressures in flask 19
By force, thus the experiment influenced on air pressure and heating temperature on sample liquid boiling point in flask 19.
The technical principle of the invention is described above in combination with a specific embodiment, is only the preferred embodiment of the present invention.This
The protection scope of invention is not limited merely to above-described embodiment, and all technical solutions belonged under thinking of the present invention belong to the present invention
Protection scope.Those skilled in the art, which does not need to pay for creative labor, can associate other specific realities of the invention
Mode is applied, these modes will fall within the scope of protection of the present invention.
Claims (9)
1. the boiling point and pressure intensity testing heating device of a kind of high school physics, which is characterized in that including height-adjustable experiment
Platform, flask support component and alcolhol burner component, flask support component are mounted on height-adjustable experimental bench, alcohol lamp group
Part is mounted on the experimental bench bottom below flask support component.
2. the boiling point and pressure intensity testing heating device of a kind of high school physics according to claim 1, which is characterized in that institute
Experimental bench is stated to include pedestal (1), stop sleeve (2), support spring (3), sliding block (4), support rod (5), experiment table top (9), watch
Motor two (27), rotary screw (28), telescopic (29), thread ending cover (30), block (31) and jacking sleeve (32) are taken, it is described
Experiment table top (9) is horizontally set on above pedestal (1), is tested and is set to quadrangle by four between table top (9) and pedestal (1)
Supporting leg is connected, and supporting leg is made of stop sleeve (2), support spring (3), sliding block (4) and support rod (5), stop sleeve
(2) bottom is welded on pedestal (1), and support rod (5) bottom is inserted into stop sleeve (2) and support rod (5) bottom end connection sliding block
(4), sliding block (4) is slidably arranged in the stop sleeve (2) in stop sleeve (2) and below sliding block (4) and is equipped with support spring
(3), support rod (5) top is fixedly connected with experiment table top (9) bottom end.
3. the boiling point and pressure intensity testing heating device of a kind of high school physics according to claim 2, which is characterized in that institute
State servo motor two (27) be mounted on experiment table top (9) bottom, the motor axis connection rotary screw (28) of servo motor two (27),
Rotary screw (28) is threaded through in the screw hole in the middle part of thread ending cover (30), and thread ending cover (30) is fixed on jacking sleeve (32) top
End, jacking sleeve (32) are fixed on pedestal (1).
4. the boiling point and pressure intensity testing heating device of a kind of high school physics according to claim 3, which is characterized in that institute
It states and is equipped with telescopic (29) outside rotary screw (28), telescopic (29) top is connected with the motor casing of servo motor two (27)
It connects, is connected at the top of telescopic (29) bottom end and jacking sleeve (32).
5. the boiling point and pressure intensity testing heating device of a kind of high school physics according to claim 1, which is characterized in that institute
State flask support component include servo motor one (6), gear (7), rack gear (8), lifting column (10), locking screw one (11),
Go up and down sliding sleeve one (12), locking screw two (13), lifting sliding sleeve two (14), increasing pump (15), pumping line (16), thermometer
(17), pressure gauge (18), flask (19), explosive-proof jacket (20), press block (21), top pressure screw rod (22), loading plate (23), heating
Filter (24) and fixed frame (43), the rack gear (8) are fixed on the bottom of lifting column (10), and lifting column (10) runs through and erects
In experiment table top (9), connection gear (7) are engaged in rack gear (8) side for straight setting, and gear (7) is mounted on servo motor one (6)
On motor shaft, the servo motor one (6) and its motor shaft are erected on fixed frame (43), and fixed frame (43) is welded on experiment
Table top (9) bottom, it is described experiment table top (9) at the top of lifting column (10) on be arranged with lifting sliding sleeve one (12) and go up and down sliding sleeve
Two (14), lifting sliding sleeve one (12) side are equipped with locking screw one (11), and lifting sliding sleeve two (14) side is equipped with locking screw two
(13)。
6. the boiling point and pressure intensity testing heating device of a kind of high school physics according to claim 5, which is characterized in that institute
It states and is equipped with increasing pump (15) in the support plate of lifting sliding sleeve two (14) side connection, increasing pump (15) is connected by pumping line (16)
Lead to flask (19), thermometer (17) and pressure gauge (18) are installed on flask (19), flask (19) is placed on lifting sliding sleeve one
(12) on the loading plate (23) of side connection, explosive-proof jacket (20) are equipped with outside flask (19), explosive-proof jacket (20) is left and right two
Part, which forms and encircles, is equipped with top pressure screw rod (22) on the outside of flask (19) outside, explosive-proof jacket (20), before top pressure screw rod (22)
The press block (21) at end offsets with explosive-proof jacket (20), and top pressure screw rod (22) is threadably mounted at fixed block above loading plate (23)
On.
7. the boiling point and pressure intensity testing heating device of a kind of high school physics according to claim 6, which is characterized in that institute
It states and heating filter (24) is installed on the loading plate (23) of flask (19) bottom, the experiment table top (9) upper surface is equipped with and is used for
The embedded groove (25) of loading plate (23) merging, embedded groove (25) lower section are equipped with burning rack (26), and the alcolhol burner component is mounted on
Experimental bench bottom below burning rack (26).
8. the boiling point and pressure intensity testing heating device, feature of a kind of high school physics according to claim 1 or claim 7 exist
In, the alcolhol burner component include guide rod (33), support frame (34), buffer spring (35), buffing pad (36), alcolhol burner (37),
Axle sleeve (38), lifting screw (39), regulation handle (40), fixing sleeve (41) and expansion bracket (42), alcolhol burner (37) top
It installs fixing sleeve (41), fixing sleeve (41) is hinged at expansion bracket (42), and expansion bracket (42) other end is hinged on experiment table top (9)
Bottom.
9. the boiling point and pressure intensity testing heating device of a kind of high school physics according to claim 8, which is characterized in that institute
It states alcolhol burner (37) bottom to be fixed with buffing pad (36), buffer spring (35), institute is installed between buffing pad (36) and pedestal (1)
It states alcolhol burner (37) bottom side to be fixed with support frame (34), support frame (34) side is slidably arranged on guide rod (33), support frame
(34) other side is threadedly coupled lifting screw (39), and lifting screw (39) top connects regulation handle (40), lifting screw (39)
Bottom end is rotatably arranged on the axle sleeve (38) on pedestal (1) Nei.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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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 |
Publications (2)
Publication Number | Publication Date |
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CN109036027A true CN109036027A (en) | 2018-12-18 |
CN109036027B CN109036027B (en) | 2021-03-30 |
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ID=64627957
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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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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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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 |
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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 |
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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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