CN111889169A - Test-tube rack capable of preventing test tube from cracking due to large temperature difference - Google Patents
Test-tube rack capable of preventing test tube from cracking due to large temperature difference Download PDFInfo
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- CN111889169A CN111889169A CN202010963869.1A CN202010963869A CN111889169A CN 111889169 A CN111889169 A CN 111889169A CN 202010963869 A CN202010963869 A CN 202010963869A CN 111889169 A CN111889169 A CN 111889169A
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- test tube
- fixedly connected
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- plate
- connecting rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L9/00—Supporting devices; Holding devices
- B01L9/06—Test-tube stands; Test-tube holders
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention relates to the technical field of teaching instruments, in particular to a test tube rack capable of preventing a test tube from cracking due to large temperature difference, wherein an adjusting plate is movably connected inside an outer shell and positioned outside an inner shell, a second gear is fixedly connected at the bottom end of the adjusting plate and positioned inside the outer shell, a toothed plate is meshed at the bottom end of the second gear, piston boxes are movably sleeved at the left end and the right end of the toothed plate, rubber plugs are fixedly connected at the left end and the right end of the toothed plate and positioned inside the piston boxes, a heat conducting wire is fixedly connected at one side inside the piston boxes and positioned on the rubber plugs, the upper end and the lower end of the heat conducting wire extend to the outer surface of the piston boxes and are fixedly connected with heat conducting plates, the internal temperatures of the outer shell and the inner shell are increased, the temperature difference between the temperature of the test tube and the indoor temperature is small in an environment with low outdoor temperature, and the phenomenon that, the safety of teachers and students in the teaching experiment process is protected.
Description
Technical Field
The invention relates to the technical field of teaching instruments, in particular to a test tube rack capable of preventing a test tube from cracking due to large temperature difference.
Background
In the chemical course of middle and primary school's study, for the more real direct reaction change that shows between the material, often need carry out the experiment with the help of some chemical instruments, instrument such as test tube, volumetric flask, alcohol lamp, beaker, alcohol lamp, because the laboratory is limited, the teacher often takes the instrument to the classroom and carries out the performance show, and the test tube is placed in the test-tube rack usually, the teacher's of being convenient for carry.
But in winter cold season, the teacher brings the test tube from outdoor into indoor back, because the too big phenomenon that often can appear the test tube and explode and split of indoor outer difference in temperature, if explode and split in the experimentation, have very big injury to teachers and students, and to the experiment of difference, the test tube diameter variation in size that uses, and ordinary test-tube rack is the circular spacing hole of same diameter, not only can not be applicable to the test tube of different diameters, and can not incline and grab and hold, the teacher of being not convenient for carries, consequently, the technical staff in the art provides one kind and can prevent the test tube rack that the test tube explodes and splits because of the difference in temperature is great, in order to solve the problem that proposes in the above-mentioned background art.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a test tube rack capable of preventing a test tube from cracking due to a large temperature difference, which is achieved by the following specific technical means:
a test tube rack capable of preventing a test tube from cracking due to large temperature difference comprises an outer shell, an inner shell fixedly connected with the inside of the outer shell, a worm movably connected with the inside of the outer shell and penetrating through the inner shell, a clamping mechanism meshed with one end of the worm, an adjusting plate movably connected with the outside of the outer shell and located in the inner shell, a pull rope fixedly connected with the outer surface of the adjusting plate, a second gear fixedly connected with the bottom of the adjusting plate and located in the inside of the outer shell, a toothed plate meshed with the bottom of the second gear, a piston box movably sleeved on the left end and the right end of the toothed plate, rubber plugs fixedly connected with the left end and the right end of the toothed plate and located in the piston box, heat conducting wires fixedly connected with the inside of the piston box and located on one side of the rubber plugs, and heat conducting wires extending to the outer surface of the piston box and fixedly connected with a heat, fixture includes first gear, limiting plate, first connecting rod, second connecting rod, pull rod and arc splint, the meshing of worm one side has first gear, the inside activity embedding of first gear is connected with the limiting plate, the surface swing joint of first gear has first connecting rod, the surface and the fixed connection of first connecting rod have the second connecting rod at the outer wall swing joint of limiting plate, the other end fixedly connected with pull rod of first connecting rod, the one end of pull rod just is located the inside fixedly connected with arc splint of limiting plate.
Preferably, the height of the outer shell is the same as that of the inner shell, and the number of the worms is two.
Preferably, the number of the clamping mechanisms is six, and the number of the adjusting plates is four.
Preferably, a heat transfer wire is fixedly connected between the heat conduction plate and the inner wall of the outer shell, and a heat transfer wire is also fixedly connected between the heat conduction plate and the inner wall of the inner shell.
As optimization, the rubber buffer is connected with the inner wall swing joint of piston box, the heat conduction silk is copper material.
Preferably, the diameter of the limiting plate is smaller than that of the first gear, the number of the arc-shaped clamping plates is eight, and a cavity is formed between the arc-shaped clamping plates.
The invention has the following beneficial effects:
1. this can prevent test-tube rack that the test tube explodes and splits because of the difference in temperature is great, through connecting the second gear in the bottom of regulating plate, the whipping about handheld stay cord carries out, and then make the regulating plate drive the second gear roll about going on, and then make the second gear drive pinion rack remove about not stopping, the rubber plug that makes the pinion rack drive its one end to be connected does the piston motion in the inside of piston box, the inside of piston box can produce the heat, the heat transmits respectively to the heat transfer silk and the heat transfer silk of piston box both sides along the heat transfer silk in, and then the inside temperature of messenger's shell body and interior casing risees, the temperature of guaranteeing the lower environment of outdoor temperature under the test tube is less with indoor difference in temperature, prevent that the test tube from taking place the phenomenon of exploding owing to great the difference in temperature, teaching experiment in-process teachers.
2. This can prevent test-tube rack that the test tube explodes and splits because of the difference in temperature is great, inside the cavity of constituteing through placing the test tube in fixture arc splint, rotatory worm makes fixture rotatory, because the one end fixed connection of second connecting rod is on the limiting plate, other end swing joint is at the middle part of first connecting rod, consequently, the second connecting rod plays lever action and makes fixture drive first connecting rod inwards suppress the pull rod and remove, consequently, the pull rod drives arc splint and inwards presss from both sides tight test tube, this mechanism is convenient for adjust the degree of grip to different diameter test tubes, so that the adaptation places the test tube of different diameters.
Drawings
Fig. 1 is a schematic top view of the outer casing of the present invention.
FIG. 2 is a schematic view of a clamping mechanism according to the present invention.
Fig. 3 is an enlarged view of a portion a of fig. 2.
Fig. 4 is a schematic view of the interior of the outer casing according to the present invention.
Fig. 5 is an enlarged view of a portion B of fig. 4.
In the figure: 1. an outer housing; 2. a worm; 3. a clamping mechanism; 4. an adjusting plate; 5. pulling a rope; 6. a first gear; 7. a limiting plate; 8. a first link; 9. a second link; 10. a pull rod; 11. an arc-shaped splint; 12. an inner housing; 13. a second gear; 14. a toothed plate; 15. a piston case; 16. a rubber plug; 17. heat conducting wires; 18. a heat conducting plate; 19. and (4) heat transfer wires.
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, a test tube rack capable of preventing a test tube from cracking due to large temperature difference comprises an outer shell 1, an inner shell 12 is fixedly connected inside the outer shell 1, a worm 2 is movably connected inside the outer shell 1 and penetrates through the inner shell 12, the height of the outer shell 1 is the same as that of the inner shell 12, the number of the worms 2 is two, clamping mechanisms 3 are meshed at one ends of the worms 2, an adjusting plate 4 is movably connected inside the outer shell 1 and outside the inner shell 12, pull ropes 5 are fixedly connected to the outer surface of the adjusting plate 4, the number of the clamping mechanisms 3 is six, and the number of the adjusting plates 4 is four.
Wherein the bottom end of the adjusting plate 4 is fixedly connected with a second gear 13 inside the outer shell 1, the bottom end of the second gear 13 is engaged with a toothed plate 14, the left and right ends of the toothed plate 14 are movably sleeved with a piston box 15, the left and right ends of the toothed plate 14 are fixedly connected with rubber plugs 16 inside the piston box 15, one side inside the piston box 15 and inside the rubber plugs 16 is fixedly connected with a heat conducting wire 17, the upper and lower ends of the heat conducting wire 17 extend to the outer surface of the piston box 15 and are fixedly connected with a heat conducting plate 18, a heat conducting wire 19 is fixedly connected between the heat conducting plate 18 and the inner wall of the outer shell 1, a heat conducting wire 19 is also fixedly connected between the heat conducting plate 18 and the inner wall of the inner shell 12, the rubber plugs 16 are movably connected with the inner wall of the piston box 15, the heat conducting wire 17 is made of copper material, the toothed plate 14 drives the rubber plugs 16, piston box 15's inside can produce the heat, and the heat transmits the heat transfer silk 19 and the heat transfer silk 19 of piston box 15 both sides respectively along heat conduction silk 17 in, and then makes shell body 1 and interior casing 12's inside temperature rise, guarantees that the temperature of test tube is less with indoor difference in temperature under the lower environment of outdoor temperature, prevents that the test tube from taking place the phenomenon of exploding owing to the difference in temperature is great, has protected teachers and students ' safety among the teaching experimentation.
Wherein the clamping mechanism 3 comprises a first gear 6, a limiting plate 7, a first connecting rod 8, a second connecting rod 9, a pull rod 10 and arc-shaped clamping plates 11, the first gear 6 is meshed on one side of the worm 2, the limiting plate 7 is movably embedded and connected inside the first gear 6, the first connecting rod 8 is movably connected to the outer surface of the first gear 6, the second connecting rod 9 is movably connected to the outer wall of the first connecting rod 8 and fixedly connected to the limiting plate 7, the pull rod 10 is fixedly connected to the other end of the first connecting rod 8, one end of the pull rod 10 is fixedly connected to the arc-shaped clamping plates 11 inside the limiting plate 7, the diameter of the limiting plate 7 is smaller than that of the first gear 6, the number of the arc-shaped clamping plates 11 is eight, cavities are formed among the arc-shaped clamping plates 11, test tubes are placed in the cavities formed by the arc-shaped clamping plates 11 in the clamping mechanism 3, the clamping mechanism 3 is rotated by rotating the worm, the other end swing joint is in the middle part of first connecting rod 8, therefore second connecting rod 9 plays lever effect and makes fixture 3 drive first connecting rod 8 and inwards suppress pull rod 10 and remove, therefore pull rod 10 drives arc splint 11 and inwards presss from both sides tight test tube, and this mechanism is convenient for adjust the degree of grip to different diameter test tubes to the test tube of different diameters is placed in the adaptation.
The working principle is as follows: when the test tube clamping mechanism is used, the bottom end of the adjusting plate 4 is connected with the second gear 13, the pull rope 5 is held by hands to swing left and right, the adjusting plate 4 drives the second gear 13 to roll left and right, the second gear 13 drives the toothed plate 14 to move left and right ceaselessly, the toothed plate 14 drives the rubber plug 16 connected with one end of the rubber plug to do piston motion in the piston box 15, heat can be generated in the piston box 15 and is respectively transmitted to the heat transfer wires 19 and 19 on the two sides of the piston box 15 along the heat transfer wires 17, the internal temperatures of the outer shell 1 and the inner shell 12 are increased, the temperature difference between the temperature of the test tube and the indoor temperature is small in the environment with low outdoor temperature, the phenomenon that the test tube is cracked due to large temperature difference is prevented, safety of teachers and students in the teaching experiment process is protected, the test tube is placed in a cavity formed by the arc-shaped clamping plates 11 in, rotatory worm 2 makes fixture 3 rotatory, because the one end fixed connection of second connecting rod 9 is on limiting plate 7, other end swing joint is at the middle part of first connecting rod 8, consequently second connecting rod 9 plays leverage and makes fixture 3 drive the inside suppression pull rod 10 of first connecting rod 8 and remove, consequently pull rod 10 drives arc splint 11 and inwards presss from both sides tight test tube, and this mechanism is convenient for adjust the degree of grip to different diameter test tubes to the test tube of different diameters is placed in the adaptation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a can prevent test-tube rack that test tube explodes because of the difference in temperature is great, includes shell body (1), its characterized in that: interior fixedly connected with of shell body (1) interior casing (12), the inside of shell body (1) and the inside swing joint who runs through in interior casing (12) have worm (2), the one end meshing of worm (2) has fixture (3), the outside swing joint that the inside of shell body (1) just is located interior casing (12) has regulating plate (4), the external fixed surface of regulating plate (4) is connected with stay cord (5), the bottom of regulating plate (4) just is located the inside fixedly connected with second gear (13) of shell body (1), the bottom meshing of second gear (13) has pinion rack (14), piston box (15) has been cup jointed in the equal activity in both ends about pinion rack (14), both ends just are located the equal fixedly connected with rubber buffer (16) in the inside of piston box (15), the inside of piston box (15) just is located one side fixedly connected with heat-conducting wire (17) of rubber buffer (16) ) The upper end and the lower end of the heat conducting wire (17) both extend to the outer surface of the piston box (15) and are fixedly connected with a heat conducting plate (18), the clamping mechanism (3) comprises a first gear (6), a limiting plate (7), a first connecting rod (8), a second connecting rod (9), a pull rod (10) and an arc-shaped clamping plate (11), a first gear (6) is meshed with one side of the worm (2), a limit plate (7) is movably embedded and connected in the first gear (6), the outer surface of the first gear (6) is movably connected with a first connecting rod (8), the outer surface of the first connecting rod (8) is fixedly connected with the outer wall of the limiting plate (7) and is movably connected with a second connecting rod (9), the other end fixedly connected with pull rod (10) of first connecting rod (8), the inside fixedly connected with arc splint (11) that the one end of pull rod (10) just is located limiting plate (7).
2. The test tube rack capable of preventing the test tube from cracking due to large temperature difference according to claim 1, characterized in that: the height of the outer shell (1) is the same as that of the inner shell (12), and the number of the worms (2) is two.
3. The test tube rack capable of preventing the test tube from cracking due to large temperature difference according to claim 1, characterized in that: the number of the clamping mechanisms (3) is six, and the number of the adjusting plates (4) is four.
4. The test tube rack capable of preventing the test tube from cracking due to large temperature difference according to claim 1, characterized in that: the heat conduction plate is characterized in that a heat transfer wire (19) is fixedly connected between the heat conduction plate (18) and the inner wall of the outer shell (1), and a heat transfer wire (19) is also fixedly connected between the heat conduction plate (18) and the inner wall of the inner shell (12).
5. The test tube rack capable of preventing the test tube from cracking due to large temperature difference according to claim 1, characterized in that: rubber buffer (16) and the inner wall swing joint of piston box (15), heat conduction silk (17) are the copper material.
6. The test tube rack capable of preventing the test tube from cracking due to large temperature difference according to claim 1, characterized in that: the diameter of limiting plate (7) is less than the diameter of first gear (6), the quantity of arc splint (11) has eight, and forms the cavity between arc splint (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010963869.1A CN111889169A (en) | 2020-09-14 | 2020-09-14 | Test-tube rack capable of preventing test tube from cracking due to large temperature difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010963869.1A CN111889169A (en) | 2020-09-14 | 2020-09-14 | Test-tube rack capable of preventing test tube from cracking due to large temperature difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111889169A true CN111889169A (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010963869.1A Withdrawn CN111889169A (en) | 2020-09-14 | 2020-09-14 | Test-tube rack capable of preventing test tube from cracking due to large temperature difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111889169A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113042224A (en) * | 2021-03-08 | 2021-06-29 | 陈彤宇 | Cell centrifuge capable of enabling test tube to regularly move during centrifugation and centrifugation method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020157795A1 (en) * | 2001-04-28 | 2002-10-31 | Genevac Ltd. | Centrifugal evaporation |
| EP2488303A1 (en) * | 2009-10-16 | 2012-08-22 | Promega Corporation | Heating, shaking, and magnetizing apparatus and method of operating the same |
| CN107802375A (en) * | 2017-11-17 | 2018-03-16 | 广东工业大学 | Urethra opening and closing device |
| CN207254337U (en) * | 2017-05-05 | 2018-04-20 | 黄河科技学院 | Mortar clamping tool is used in experiment |
| CN207446296U (en) * | 2017-11-09 | 2018-06-05 | 崔平 | A kind of animal doctor is with sampling test tube auxiliary temperature-reducing device |
| CN108636472A (en) * | 2018-06-12 | 2018-10-12 | 田振宇 | A kind of test tube preheating device |
| CN210230034U (en) * | 2020-02-03 | 2020-04-03 | 王亚 | Novel test-tube rack is used in laboratory |
-
2020
- 2020-09-14 CN CN202010963869.1A patent/CN111889169A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020157795A1 (en) * | 2001-04-28 | 2002-10-31 | Genevac Ltd. | Centrifugal evaporation |
| EP2488303A1 (en) * | 2009-10-16 | 2012-08-22 | Promega Corporation | Heating, shaking, and magnetizing apparatus and method of operating the same |
| CN207254337U (en) * | 2017-05-05 | 2018-04-20 | 黄河科技学院 | Mortar clamping tool is used in experiment |
| CN207446296U (en) * | 2017-11-09 | 2018-06-05 | 崔平 | A kind of animal doctor is with sampling test tube auxiliary temperature-reducing device |
| CN107802375A (en) * | 2017-11-17 | 2018-03-16 | 广东工业大学 | Urethra opening and closing device |
| CN108636472A (en) * | 2018-06-12 | 2018-10-12 | 田振宇 | A kind of test tube preheating device |
| CN210230034U (en) * | 2020-02-03 | 2020-04-03 | 王亚 | Novel test-tube rack is used in laboratory |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113042224A (en) * | 2021-03-08 | 2021-06-29 | 陈彤宇 | Cell centrifuge capable of enabling test tube to regularly move during centrifugation and centrifugation method |
| CN113042224B (en) * | 2021-03-08 | 2023-02-17 | 倪丽萍 | Cell centrifuge capable of enabling test tube to regularly move during centrifugation and centrifugation method |
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Application publication date: 20201106 |