Fire-free heating experimental instrument

Abstract

The utility model relates to the technical field of experimental equipment, and particularly discloses a fireless heating experimental instrument, which comprises a shell, the top of the shell is provided with an opening, and the side wall of the shell is provided with a power socket capable of being electrically connected with a laboratory power supply and a knob for controlling the power-on and current of a circuit; the heating disc is arranged at the opening of the shell, and an electric heating wire which can be electrically connected with the power socket is arranged in the heating disc; the heat conduction fixing seat is arranged on the heating disc and provided with a test tube mounting groove for mounting a test tube, and the problem that in the traditional teaching experiment process, an alcohol lamp is adopted for heating a beaker or a test tube, and serious potential safety hazards exist is solved.

Description

Technical Field

[0001] The present application relates to the technical field of experimental equipment, and specifically discloses a fireless heating experimental instrument. Background Art

[0002] In teaching experiments, it is usually necessary to heat the solution in a beaker or test tube to observe the physical and chemical changes of various substances. In the current experimental process, the traditional heating method is to use an alcohol lamp as a heat source to heat the beaker or test tube with an open flame, so as to achieve the purpose of heating the solution in the beaker or test tube.

[0003] However, the alcohol lamp heating has the following defects: first, since it uses open flame for heating, the risk factor is high, which can easily lead to experimental accidents and pose a serious safety hazard; second, a single alcohol lamp can usually only heat a single beaker or test tube, and the heating efficiency is low. When multiple beakers or test tubes need to be heated in some control experiments, multiple alcohol lamps need to be configured to facilitate observation of the experimental site, which not only increases the degree of the experiment, but also further increases the experimental risk; third, since the alcohol lamp uses alcohol as fuel, the storage conditions are harsh, which increases the maintenance cost of the laboratory. Therefore, in view of this, the inventor provides a fireless heating experiment instrument to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the problem of serious potential safety hazard in heating a beaker or a test tube with an alcohol lamp in a traditional teaching experiment process.

[0005] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a fire-free heating test instrument, comprising:

[0006] A housing, wherein the top of the housing is provided with an opening, and the side wall of the housing is provided with a power socket that can be electrically connected to a laboratory power supply and a knob for controlling circuit power supply and current size;

[0007] A heating plate, the heating plate being arranged at the opening of the shell and having an electric heating wire therein which can be electrically connected to the power socket;

[0008] A heat-conducting fixing seat is arranged on the heating plate and is provided with a test tube installation groove for accommodating the installation of the test tube.

[0009] Furthermore, the heat-conducting fixing seat is a heat-conducting platform arranged on the top of the heating plate, the test tube mounting grooves are multiple and are respectively arranged vertically on the peripheral ends of the heat-conducting platform, and the test tube mounting grooves are all provided with notches communicating with the side walls of the heat-conducting platform.

[0010] Furthermore, it also includes a heat-conducting plate which is arranged on the heat-conducting platform and can cover the test tube, and the side wall of the heat-conducting plate is provided with an opening corresponding to the notch.

[0011] Furthermore, the outer wall of the heat conducting plate is provided with a heat insulating layer.

[0012] Furthermore, the heat conduction platform includes a heat conduction part and a heat insulation part. The heat conduction parts are respectively arranged at the bottom of the heat conduction platform and the inner wall of each test tube installation groove, and the heat conduction parts are interconnected.

[0013] Furthermore, the heat-conducting fixing seat includes a plurality of heat-conducting fixing plates fixedly connected to the heating plate, the heat-conducting fixing plates enclose the test tube mounting groove and the side walls of the heat-conducting fixing plates are provided with notches.

[0014] Furthermore, the test tube mounting grooves are all arranged obliquely along the heat-conducting fixing seat.

[0015] Furthermore, it also includes a glass protective cover, which is detachably connected to the top of the shell.

[0016] Furthermore, a plurality of limiting ear pieces are evenly arranged on the top of the shell, and a plurality of limiting grooves adapted to the limiting ear pieces are arranged on the bottom of the glass protection cover.

[0017] Furthermore, the bottom of the glass protection cover is provided with a step surface adapted to the opening of the shell.

[0018] The principle and effect of this scheme are:

[0019] Compared with the prior art, the utility model heats the heating plate by conducting electricity through the electric heating wire, thereby heating the beaker or test tube on the heat-conducting fixing seat. No open flame is generated during the heating process, and safety is higher. Moreover, the heater of the utility model can fix the test tube through the test tube mounting groove, and no test tube rack or the like is required for assistance during use, and operation is more convenient. Moreover, the heater of the utility model can heat multiple test tubes or beakers at the same time, reducing the cost of the experiment and the difficulty of operation. Moreover, the heater of the utility model is easy to store, not prone to safety accidents, and has strong safety.

[0020] On the premise that the test tube is fixed by the test tube installation groove, the utility model is also provided with a notch for the experimenter to observe the change of the solution in the test tube during the heating process, which is more convenient for the experimenter to learn during the experiment. At the same time, the inclined test tube installation groove is more suitable for the heating angle requirement of the test tube during the experiment. The arranged heat conductive sheet increases the heating area and the uniformity of the heating of the test tube, and also performs the effect of heat insulation and safety protection on the test tube through the heat insulation layer.

[0021] The utility model arranges the heat conduction platform in the form of a heat conduction part and a heat insulation part. Since the utility model adopts a heating plate and a heat conduction platform for heat transfer, the arrangement of the heat conduction part and the heat insulation part can effectively reduce the heat loss during the transfer process, and the heat insulation part can also keep the heat conduction part warm, thereby reducing the heat dissipated from the heat conduction part to the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic diagram of a first embodiment of a fireless heating test instrument proposed in an embodiment of the present application is shown;

[0024] Figure 2 A schematic diagram of a second embodiment of a fireless heating test instrument proposed in an embodiment of the present application is shown;

[0025] Figure 3 A schematic diagram of a third embodiment of a fireless heating test instrument proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0027] The reference numerals in the drawings of the specification include: housing 1, heating plate 2, heat-conducting fixing seat 3, test tube mounting slot 4, beaker placement slot 5, test tube 6, knob 7, heat-conducting sheet 8, glass protective cover 9, step surface 10.

[0028] A fireless heating test instrument, embodiment 1 Figure 1 As shown, it includes the following structures:

[0029] The shell 1 has an opening on the top, a power socket electrically connected to a laboratory power supply and a knob 7 for controlling circuit power and current. A variable resistor is arranged in the shell 1, and the knob 7 controls the circuit short and current by adjusting the conduction and resistance of the variable resistor.

[0030] A heating plate 2 is arranged at the opening of the shell 1 and an electric heating wire is provided in the heating plate 2 which can be electrically connected to the power socket; the heating plate 2 is made of insulating material to prevent leakage, and a temperature sensor with an electronic display is provided in the shell 1, the monitoring end of the temperature sensor is in contact with the outer wall of the heating plate 2, and the display end of the temperature sensor is located on the outer wall of the shell 1.

[0031] The heat-conducting fixing seat 3 is arranged on the heating plate 2 and is provided with a test tube installation groove 4 for accommodating the installation of the test tube 6. In this embodiment, the heat-conducting fixing seat 3 adopts a heat-conducting table, and a beaker placement groove 5 for accommodating the beaker is provided in the middle of the heat-conducting table, and a plurality of test tube installation grooves 4 are provided at the peripheral end of the heat-conducting table, and each of the test tube installation grooves 4 is provided with a notch connected to the side wall of the heat-conducting table, so that the experimenter can observe the experimental process. In order to reduce the waste of heat, in this embodiment, the heat-conducting table is set in the form of a heat-conducting part and a heat-insulating part. The heat-conducting parts are respectively arranged at the bottom of the heat-conducting table and the inner wall of each test tube installation groove 4, and the heat-conducting parts are connected to each other, so as to transfer the heat on the heating plate 2 to the inner wall of the test tube installation groove 4, and the heat-insulating part fills the rest of the heat-conducting table.

[0032] Example 2 Figure 2 As shown, the difference between Example 2 and Example 1 is that a heat-conducting plate 8 is further provided on the heat-conducting fixing seat 3, the side wall of the heat-conducting plate 8 is provided with an opening corresponding to the notch, and the outer wall of the heat-conducting plate 8 is provided with a heat-insulating layer. This arrangement improves the heating area and uniformity of the test tube 6, and also provides heat insulation and safety protection for the test tube 6 through the heat-insulating layer.

[0033] Example 3 Figure 3 As shown, the difference between Example 3 and Example 1 is that the heat-conducting fixing seat 3 in Example 3 is composed of a plurality of heat-conducting fixing plates, each of which is fixedly connected to the top of the heating plate 2 and the heat-conducting fixing plates are enclosed to form a test tube mounting groove 4, and the corresponding side walls of the heat-conducting fixing plates are also provided with notches to facilitate the experimenters to observe the experimental process.

[0034] The test tube installation slots 4 in the first, second and third embodiments can be arranged obliquely along the heat-conducting fixing seat 3 to meet the heating angle requirements of the test tube 6 during the experiment.

[0035] The heating apparatuses in the first, second and third embodiments may further include a glass protective cover 9 to further improve the safety performance during the experiment, and the glass protective cover 9 is detachably connected to the top of the housing 1. Specifically, a plurality of stopper ears are evenly arranged on the top of the housing 1, a plurality of stopper grooves adapted to the stopper ears are arranged at the bottom of the glass protective cover 9, and a step surface 10 adapted to the opening of the housing 1 is arranged at the bottom of the glass protective cover 9.

[0036] In the implementation process of the utility model, the laboratory power supply is electrically connected to the power socket through the power cord, the test tube 6 or beaker to be heated is placed on the heat-conducting fixing seat 3, and the glass protective cover 9 is placed on the top of the housing 1 for safety protection, and then the knob 7 is turned to adjust the heating temperature of the heating plate 2, so as to heat the test tube 6 or beaker, and the changes of the solution in the test tube 6 or beaker can be observed during the heating process. After the heating is completed, the heating plate 2 can be turned off by turning the knob 7.

[0037] Compared with the prior art, the utility model heats the heating plate 2 by conducting electricity through the electric heating wire, thereby heating the beaker or test tube 6 on the heat-conducting fixing seat 3. No open flame is generated during the heating process, and safety is higher. Moreover, the heater of the utility model can fix the test tube 6 through the test tube mounting groove 4, and no test tube 6 rack or the like is required for assistance during use, and operation is more convenient. Moreover, the heater of the utility model can heat multiple test tubes 6 or beakers at the same time, reducing the cost of the experiment and the difficulty of operation. Moreover, the heater of the utility model is easy to store, not prone to safety accidents, and has strong safety.

[0038] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fireless heating test instrument, characterized in that: include: A housing, wherein the top of the housing is provided with an opening, and the side wall of the housing is provided with a power socket that can be electrically connected to a laboratory power supply and a knob for controlling circuit power supply and current size; A heating plate, the heating plate being arranged at the opening of the shell and having an electric heating wire therein which can be electrically connected to the power socket; A heat-conducting fixing seat is arranged on the heating plate and is provided with a test tube installation groove for accommodating the installation of the test tube.

2. A fireless heating tester according to claim 1, characterized in that: The heat conduction fixing seat is a heat conduction platform arranged on the top of the heating plate, and the test tube installation grooves are multiple and vertically arranged at the peripheral ends of the heat conduction platform, and the test tube installation grooves are all provided with notches communicating with the side walls of the heat conduction platform.

3. A fireless heating tester according to claim 2, characterized in that: It also includes a heat-conducting sheet which is arranged on the heat-conducting platform and can cover the test tube, and the side wall of the heat-conducting sheet is provided with an opening corresponding to the notch.

4. A fireless heating tester according to claim 3, characterized in that: The outer wall of the heat conducting sheet is provided with a heat insulating layer.

5. A fireless heating tester according to claim 2, characterized in that: The heat conduction platform comprises a heat conduction part and a heat insulation part. The heat conduction parts are respectively arranged at the bottom of the heat conduction platform and the inner wall of each test tube installation groove, and the heat conduction parts are interconnected.

6. A fireless heating tester according to claim 1, characterized in that: The heat-conducting fixing seat comprises a plurality of heat-conducting fixing plates fixedly connected to the heating plate, the heat-conducting fixing plates enclose the test tube installation groove and the side walls of the heat-conducting fixing plates are provided with notches.

7. A fireless heating tester according to claim 2 or 6, characterized in that: The test tube installation grooves are all arranged obliquely along the heat-conducting fixing seat.

8. The fireless heating tester according to claim 1, characterized in that: It also includes a glass protective cover, which is detachably connected to the top of the shell.

9. A fireless heating tester according to claim 8, characterized in that: A plurality of limiting ear pieces are evenly arranged on the top of the shell body, and a plurality of limiting grooves adapted to the limiting ear pieces are arranged on the bottom of the glass protection cover.

10. A fireless heating tester according to claim 9, characterized in that: The bottom of the glass protection cover is provided with a step surface adapted to the opening of the shell.

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