CN213211442U

CN213211442U - Heat conduction presentation device is used to primary school's science

Info

Publication number: CN213211442U
Application number: CN202021887792.6U
Authority: CN
Inventors: 周瑞琛; 周小东
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-05-14
Anticipated expiration: 2030-09-02

Abstract

The utility model discloses a heat-conduction presentation device is used to primary school's science, including base, brace table and heat conduction stick body, the top bolt of base has the water tank, the heating couple is all installed to the left and right sides of water tank inner chamber, the center department at base top sets up flutedly, the inside bolt of recess has the motor, the output shaft joint of motor has the bull stick. The utility model discloses can stir water in the heating process, it is more even to make water be heated, and make the result of demonstration more accurate objective, and the teacher of being convenient for changes the heat conduction stick, it only can heat water under the state of stewing to have solved some current heat-conduction presentation devices, easily cause the water to be heated unevenly, and then the temperature that leads to different positions has the difference, and produce the influence to the result of demonstration, and the heat conduction stick of device installs the inside at the demonstration case, inconvenient teacher's worker changes and dismantles the problem.

Description

Heat conduction presentation device is used to primary school's science

Technical Field

The utility model relates to an equipment technical field is used in the teaching, specifically is a heat-conduction presentation device is used to primary school's science.

Background

Heat conduction is a heat transfer phenomenon when no macroscopic motion exists in a medium, and can occur in solid, liquid and gas, but strictly speaking, pure heat conduction is only achieved in the solid, and natural convection is also generated due to density difference caused by temperature gradient even if a fluid is in a static state, so that heat convection and heat conduction occur simultaneously in the fluid.

If the Chinese patent No. CN209625571U discloses a heat conduction demonstrator for primary school science, the device completes teaching demonstration by heating water, is safer than an alcohol lamp, can perform comparison demonstration by heat conducting rods made of different materials such as copper rods, aluminum rods, iron rods, wood rods and the like to enable teaching results to be displayed more visually, can only heat water in a standing state, is easy to cause uneven heating of water, so that the water temperatures at different positions are different and influence the demonstration result, and the heat conducting rod of the device is arranged in the demonstration box, so that the replacement and the disassembly of teachers are inconvenient, therefore, the water can be stirred in the heating process, the water is heated more uniformly, and the demonstration result is more accurate and objective, and the heat conduction demonstration device which is convenient for teachers to replace the heat conduction rod solves the problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heat-conduction presentation device is used to primary school's science, it can stir water at the heating process, it is more even to make water be heated, and make the result of demonstration more accurate objective, and the teacher of being convenient for changes the heat conduction stick, the heat-conduction presentation device who has proposed in having solved above-mentioned background can only heat water under the state of stewing, easily cause the water to be heated unevenly, and then the temperature that leads to different positions has the difference, and produce the influence to the result of demonstration, and the heat conduction stick of device installs the inside at the demonstration case, inconvenient teacher's staff changes and the problem of dismantling.

In order to achieve the above object, the utility model provides a following technical scheme: a heat conduction demonstration device for primary school science comprises a base, a supporting table and a heat conducting rod body, wherein a water tank is bolted to the top of the base, heating couples are mounted on the left side and the right side of an inner cavity of the water tank, a groove is formed in the center of the top of the base, a motor is bolted to the inside of the groove, a rotating rod is connected to an output shaft of the motor in a clamped mode, the top end of the rotating rod penetrates into the water tank, stirring blades are bolted to the left side and the right side of the rotating rod, a plurality of sleeves are arranged on the surface of the supporting table in a penetrating mode, the bottom ends of the sleeves are communicated with the water tank, the heat conducting rod body is connected with the inner wall of each sleeve in a sliding mode, an electronic thermometer is mounted on the left side of each sleeve, the probe end of the electronic thermometer extends into the corresponding sleeve and is in contact with the surface of the heat conducting rod body, threaded, the knob bolt is welded with a fixing column near one end of the heat conducting rod body, and fixing grooves matched with the fixing columns for use are formed in the surfaces of the front side and the rear side of the heat conducting rod body.

Preferably, the right side of water tank is provided with the funnel, the bottom intercommunication of funnel has the connecting pipe, and the other end and the water tank of connecting pipe communicate each other, the right side intercommunication of water tank bottom has the calandria, the valve is installed on the right side that the surface of calandria just is located the base.

Preferably, a limiting ring is arranged above the surface of the heat conducting rod body, and the outer diameter of the limiting ring is the same as that of the sleeve.

Preferably, a plurality of temperature sensors are installed in the water tank, and the temperature sensors are matched with the heating couple for use.

Preferably, the water tank is made of heat-insulating materials, a glass window is arranged on the surface of the left side of the water tank, and the glass window is made of heat-insulating glass.

Preferably, the outer diameter of the fixing column is smaller than the inner diameter of the threaded hole, and a space is reserved between the stirring blade and the heating couple.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses can stir water in the heating process, it is more even to make water be heated, and make the result of demonstration more accurate objective, and the teacher of being convenient for changes the heat conduction stick, it only can heat water under the state of stewing to have solved some current heat-conduction presentation devices, easily cause the water to be heated unevenly, and then the temperature that leads to different positions has the difference, and produce the influence to the result of demonstration, and the heat conduction stick of device installs the inside at the demonstration case, inconvenient teacher's worker changes and dismantles the problem.

Drawings

FIG. 1 is a front sectional view of the structure of the present invention;

fig. 2 is a schematic perspective view of a partial structure of the sleeve of the present invention;

FIG. 3 is a schematic perspective view of the heat conducting rod body according to the present invention;

fig. 4 is a left side view of the structure of the present invention.

In the figure: 1. a base; 2. a support table; 3. a heat conducting rod body; 4. a water tank; 5. heating a thermocouple; 6. a groove; 7. a motor; 8. a rotating rod; 9. stirring blades; 10. a sleeve; 11. an electronic thermometer; 12. a threaded hole; 13. a knob bolt; 14. fixing a column; 15. fixing grooves; 16. a funnel; 17. a connecting pipe; 18. arranging pipes; 19. a valve; 20. a limiting ring; 21. a temperature sensor; 22. a glass window.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a heat conduction demonstration device for primary school science comprises a base 1, a support table 2 and a heat conducting rod body 3, wherein a water tank 4 is bolted on the top of the base 1, heating couples 5 are respectively installed on the left side and the right side of an inner cavity of the water tank 4, a groove 6 is formed in the center of the top of the base 1, a motor 7 is bolted in the groove 6, an output shaft of the motor 7 is clamped with a rotating rod 8, the top end of the rotating rod 8 penetrates into the water tank 4, stirring blades 9 are bolted on the left side and the right side of the rotating rod 8, a plurality of sleeves 10 penetrate through the surface of the support table 2, the bottom ends of the sleeves 10 are mutually communicated with the water tank 4, the heat conducting rod body 3 is slidably connected with the inner wall of the sleeves 10, an electronic thermometer 11 is installed on the left side of the sleeves 10, and a probe end of the electronic thermometer 11 extends into the sleeves, threaded hole 12 is all seted up on the surface of both sides around sleeve pipe 10, threaded hole 12's inner wall threaded connection has knob bolt 13, knob bolt 13 has fixed column 14 near the one end welding of heat conduction stick body 3, fixed slot 15 that uses with fixed column 14 cooperation is all seted up on the surface of both sides around the heat conduction stick body 3, the device can stir water in the heating process, it is more even to make water be heated, and make the result of demonstration more accurate objective, and be convenient for the teacher change the heat conduction stick, it only can heat water under the state of stewing to have solved some current heat-conduction presentation device, easily cause the water to be heated unevenly, and then the temperature that leads to different positions has the difference, and produce the influence to the result of demonstration, and the inside at the demonstration case is installed to the heat conduction stick of device, inconvenient teacher changes and the problem of dismantling.

Further, the right side of water tank 4 is provided with funnel 16, the bottom intercommunication of funnel 16 has connecting pipe 17, and the other end and the water tank 4 of connecting pipe 17 communicate each other, the right side intercommunication of 4 bottoms of water tank has calandria 18, the surface of calandria 18 just is located the right side of base 1 and installs valve 19, through the setting of funnel 16 and connecting pipe 17, the teacher of being convenient for adds the water of use to the inside of water tank 4, and calandria 18 and valve 19's setting, the teacher of being convenient for discharges the inside water of water tank 4.

Further, spacing collar 20 is installed to the top on heat conduction stick body 3 surface, and the external diameter of spacing collar 20 is the same with the external diameter of sleeve pipe 10, and through the setting of spacing collar 20, it can carry on spacingly to heat conduction stick body 3 drops to the inside of water tank 4 under the fixed situation of lacking.

Further, the internally mounted of water tank 4 has a plurality of temperature sensor 21, and temperature sensor 21 uses with heating idol 5 mutually supporting, through temperature sensor 21's setting, realizes carrying out the effect monitored to the inside temperature of water tank 4 to the teacher controls the inside temperature of water tank 4 through opening and stopping heating idol 5.

Further, water tank 4 is made for thermal insulation material, and the left surface mounting of water tank 4 has glass window 22, and glass window 22 makes for thermal insulation glass, makes for thermal insulation material through design water tank 4, and it can promote water tank 4's heat preservation effect, and glass window 22 is convenient for the teacher to observe the inside of water tank 4 simultaneously.

Further, the external diameter of fixed column 14 is less than the internal diameter of screw hole 12, has the interval between stirring leaf 9 and the heating idol 5, and the external diameter through design fixed column 14 is less than the internal diameter of screw hole 12, and it can avoid taking place wearing and tearing between the inner wall of fixed column 14 and screw hole 12, has the interval through design stirring leaf 9 and heating idol 5, and it can avoid stirring leaf 9 to bump with heating idol 5 at the rotation in-process.

The working principle is as follows: in operation, water for use is first added to the interior of the water tank 4 through the funnel 16, then the heating couple 5 is turned on to heat the water, and at the same time the motor 7 is turned on, which drives the rotating rod 8 and the stirring blade 9 to start rotating, the stirring blade 9 can drive the water in the water tank 4 to rotate while rotating, which enables the water to fully contact with the heating couple 5 to heat more evenly, when the temperature of the water rises to a proper value, the heat conducting rod bodies 3 of different materials can be taken up and inserted into the sleeve 10, and then the knob bolts 13 at the front and rear sides are rotated, the fixing column 14 is driven to enter the fixing groove 15 under the action of the screw thread, the heat conducting rod body 3 is in a fixed state, then the heat in the water is transferred to the inside of the heat conducting rod body 3, comparing the heat conduction effects of the heat conduction rods made of different materials through the readings displayed by the electronic thermometers 11; if need change or dismantle heat conduction stick body 3, only need rotate knob bolt 13 and make fixed column 14 break away from the inside of fixed slot 15, later take up heat conduction stick body 3 can, the device be convenient for the teacher's staff and change and dismantle the heat conduction stick.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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

1. The utility model provides a heat-conduction presentation device is used to primary school's science, includes base (1), brace table (2) and heat conduction stick body (3), its characterized in that: the heat conducting rod comprises a base (1), a water tank (4) is connected to the top of the base (1) in a bolted mode, heating couples (5) are installed on the left side and the right side of an inner cavity of the water tank (4), a groove (6) is formed in the center of the top of the base (1), a motor (7) is connected to the inner portion of the groove (6) in a bolted mode, a rotating rod (8) is connected to an output shaft of the motor (7) in a clamped mode, the top end of the rotating rod (8) penetrates through the water tank (4), stirring blades (9) are connected to the left side and the right side of the rotating rod (8) in a bolted mode, a plurality of sleeves (10) penetrate through the surface of a supporting platform (2), the bottom ends of the sleeves (10) are communicated with the water tank (4), the heat conducting rod body (3) is connected with the inner walls of the sleeves (10) in a sliding mode, an electronic thermometer (11) is installed on the left side of the sleeves (10), threaded holes (12) are formed in the surfaces of the front side and the rear side of the sleeve (10), knob bolts (13) are connected to the inner walls of the threaded holes (12) in a threaded mode, fixing columns (14) are welded to one ends, close to the heat conducting rod body (3), of the knob bolts (13), and fixing grooves (15) matched with the fixing columns (14) in use are formed in the surfaces of the front side and the rear side of the heat conducting rod body (3).

2. A heat conduction demonstration apparatus for primary school science according to claim 1, wherein: the right side of water tank (4) is provided with funnel (16), the bottom intercommunication of funnel (16) has connecting pipe (17), and the other end and water tank (4) of connecting pipe (17) communicate each other, the right side intercommunication of water tank (4) bottom has calandria (18), valve (19) are installed on the surface of calandria (18) and the right side that is located base (1).

3. A heat conduction demonstration apparatus for primary school science according to claim 1, wherein: a limiting ring (20) is arranged above the surface of the heat conducting rod body (3), and the outer diameter of the limiting ring (20) is the same as that of the sleeve (10).

4. A heat conduction demonstration apparatus for primary school science according to claim 1, wherein: a plurality of temperature sensors (21) are arranged inside the water tank (4), and the temperature sensors (21) are matched with the heating couple (5) for use.

5. A heat conduction demonstration apparatus for primary school science according to claim 1, wherein: the water tank (4) is made of heat-insulating materials, a glass window (22) is mounted on the surface of the left side of the water tank (4), and the glass window (22) is made of heat-insulating glass.

6. A heat conduction demonstration apparatus for primary school science according to claim 1, wherein: the outer diameter of the fixing column (14) is smaller than the inner diameter of the threaded hole (12), and a space is reserved between the stirring blade (9) and the heating couple (5).