CN215066280U - Melting point measuring device for experiment teaching - Google Patents
Melting point measuring device for experiment teaching Download PDFInfo
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- CN215066280U CN215066280U CN202121105348.9U CN202121105348U CN215066280U CN 215066280 U CN215066280 U CN 215066280U CN 202121105348 U CN202121105348 U CN 202121105348U CN 215066280 U CN215066280 U CN 215066280U
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Abstract
The utility model discloses a melting point measurement device for experiment teaching, include: the analyzer body comprises a container, a heating mechanism for heating the container, a capillary tube and a thermometer, wherein the capillary tube and the thermometer are positioned in the container; protection subassembly, including safety cover, protection machanism and mechanism of amplification, safety cover distance cover is located the periphery of container, the mechanism of amplification includes the connecting rod and is located the magnifying glass on connecting rod top, the connecting rod articulates the outside of safety cover, protection machanism one end with the safety cover is close to one side of connecting rod is connected, the other end with the connecting rod is connected. The utility model provides a pair of hand and health are difficult to the touching on beaker or capillary when the concurrent operation of the melting point survey device for experiment teaching can normally observe the sample melting condition, and the operating safety is high.
Description
Technical Field
The utility model relates to a melting point measurement technical field, in particular to melting point measurement device for experiment teaching.
Background
In the field of organic chemistry, melting point measurement is a basic means for identifying the nature of a substance and is one of important methods for measuring purity. Therefore, the melting point tester plays an important role in chemical industry and medical research, and is a necessary instrument for producing medicines, spices, dyes and other organic crystal substances. The existing melting point tester comprises a machine body, a heating device arranged in the machine body, a special capillary tube, a thermometer and a beaker. During the experiment, a crystal sample is ground and then is filled into a specially-made capillary tube, a heat-conducting medium is poured into a beaker, the capillary tube is arranged in the beaker, a heating device heats the beaker to melt the sample, the melting condition of the sample is observed, and the initial melting temperature and the final melting temperature are recorded through a thermometer.
However, the existing measuring instrument has the disadvantages in experimental teaching that: in the experimental process, beaker and capillary temperature are higher, and hand and health touch easily on beaker or capillary in the experiment operation process, have the poor problem of operational safety.
Therefore, how to provide a melting point measuring apparatus for experimental teaching with high operation safety is a technical problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model is to provide a melting point survey device for experiment teaching, hand and health are difficult to the touching on beaker or capillary when can normally observe the concurrent operation of sample melting condition, and the operating safety is high.
In order to realize the above-mentioned purpose, the embodiment of the utility model provides a melting point measurement device for experiment teaching is provided, include:
the analyzer body comprises a container, a heating mechanism for heating the container, a capillary tube and a thermometer, wherein the capillary tube and the thermometer are positioned in the container;
protection subassembly, including safety cover, protection machanism and mechanism of amplification, safety cover distance cover is located the periphery of container, the mechanism of amplification includes the connecting rod and is located the magnifying glass on connecting rod top, the connecting rod articulates the outside of safety cover, protection machanism one end with the safety cover is close to one side of connecting rod is connected, the other end with the connecting rod is connected.
Further, the guard mechanism includes:
an elastic arc-shaped member;
the elastic arc-shaped piece is sleeved with the connecting rod through the rubber ring; the bonding piece is arranged at the lower end of the elastic arc-shaped piece, and the elastic arc-shaped piece is connected with the inner wall of the protective cover through the bonding piece.
Further, elasticity arc spare includes elasticity rubber circle and the thermal-insulated cloth layer that is the arcwall face, thermal-insulated cloth layer is located the radial one end of elasticity rubber circle.
Further, the protection assembly further comprises a hinge mechanism, and the connecting rod is hinged to the outer side of the protection cover through the hinge mechanism;
the hinge mechanism comprises a hinge ball, a spring and a hinge rod which are positioned on the connecting rod, first hinge holes are formed in two radially opposite sides of the hinge ball, and an assembling hole for penetrating the connecting rod is formed in the hinge ball; the springs are arranged in the first hinge holes, and the hinge rods comprise first ends used for connecting the springs and second ends used for connecting the protective covers;
the upper end of safety cover is equipped with the hinge interface, the radial both ends of hinge interface all are equipped with and are used for wearing to establish the hinge bar the second hinge hole of second end.
Furthermore, a clamping groove used for clamping the connecting rod is formed in the outer wall of the circumferential end of the protective cover.
Further, the protection assembly further comprises a bearing ring located at the bottom of the protection cover, and the lower end of the protection cover is fixedly connected with the upper end of the bearing ring.
Further, the melting point measuring device for experimental teaching further includes: a securing assembly, the securing assembly comprising:
the supporting rod is positioned on the tester body;
the fixed rod is horizontally arranged on the supporting rod and is connected with the supporting rod in a sliding manner;
the capillary fixing part comprises a fixing hoop fixedly connected to the fixing rod and a rubber block arranged on the circumferential end inner wall of the fixing hoop, and a through hole used for penetrating and fixing the capillary is formed in the rubber block.
Further, the through hole is a plurality of.
Further, the fixed subassembly still includes the thermometer mounting, the thermometer mounting is including locating fixed block on the dead lever, be equipped with the fixed orifices that is used for wearing to establish fixed thermometer on the fixed block.
Further, the heating mechanism is a heating plate, and an asbestos net is arranged between the bottom of the container and the heating plate.
The embodiment of the utility model provides an in one or more technical scheme, following technological effect or advantage have at least:
the utility model provides a pair of melting point measurement device is used in experiment teaching, include: the analyzer body comprises a container, a heating mechanism for heating the container, a capillary tube and a thermometer, wherein the capillary tube and the thermometer are positioned in the container; protection subassembly, including safety cover, protection machanism and mechanism of amplification, safety cover distance cover is located the periphery of container, the mechanism of amplification includes the connecting rod and is located the magnifying glass on connecting rod top, the connecting rod articulates the outside of safety cover, protection machanism one end with the safety cover is close to one side of connecting rod is connected, the other end with the connecting rod is connected.
In the use of the utility model, the crystal sample is porphyrized and then is filled into a specially-made capillary tube during the experiment, the heat-conducting medium is poured into the container, the capillary tube is arranged in the container, the heating mechanism heats the container to melt the sample, the melting condition of the sample is observed, and the initial melting temperature and the final melting temperature are recorded by the thermometer; the protective cover is arranged on the periphery of the container in a spaced manner, so that an operator can be far away from the container, and the magnifier is used for observing the melting condition of the sample, so that the situation that the operator cannot see clearly due to the fact that the operator is far away from the container is avoided, and the protective mechanism plays a role in shielding; consequently adopt the utility model provides a pair of melting point survey device for experiment teaching, hand and health are difficult to the touching on beaker or capillary when can normally observe the concurrent operation of sample melting condition, and the operating safety is high.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the melting point tester for experiment teaching of the present invention;
FIG. 2 is a schematic perspective view of the protective cover of FIG. 1 and a connecting rod hinged thereto;
FIG. 3 is a schematic perspective view of the connection between the lower end of the handle and the latch of FIG. 2;
FIG. 4 is an enlarged perspective view of the rubber block of FIG. 1 with two capillaries;
FIG. 5 is an exploded perspective view of the protective cover, the hinge ball and the protective curtain of FIG. 2;
the respective symbols in the figure are as follows:
1. a meter body; 11. a container; 12. a heating mechanism; 13. a capillary tube; 14. a thermometer; 141. a probe; 142. a display; 15. an asbestos web; 16. a cover body;
2. a protection component;
21. a protective cover; 211. a card slot; 212. hinging the interface; 213. a second hinge hole;
22. a protection mechanism; 221. an elastic arc-shaped member; 2211. an elastic rubber ring; 2212. a heat insulating cloth layer; 222. a rubber ring; 223. an adhesive sheet;
23. an amplifying mechanism; 231. a connecting rod; 232. a magnifying glass;
24. a hinge mechanism; 241. hinging the ball; 2411. a first hinge hole; 2412. an assembly hole; 242. a spring; 243. a hinged lever;
25. a bearing ring;
3. a fixing assembly; 31. a support bar; 32. fixing the rod; 33. a capillary mount; 331. a fixing hoop; 332. a rubber block; 3321. a through hole; 34. a thermometer holder.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to specific embodiments and examples, and the advantages and various effects of the embodiments of the present invention will be more clearly apparent from the description. It should be understood by those skilled in the art that the detailed description and examples are intended to illustrate, but not limit, embodiments of the invention.
Throughout the specification, unless otherwise specifically noted, terms used herein should be understood as having meanings as commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the invention belong. If there is a conflict, the present specification will control.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "first," "second," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of a plurality of or a plurality of is two or more unless specifically limited otherwise.
Referring to fig. 1-5, an embodiment of the present invention provides a melting point measuring device for experiment teaching, including:
a measuring instrument body 1 including a container 11, a heating mechanism 12 for heating the container 11, a capillary 13 and a thermometer 14 in the container;
The embodiment of the utility model provides a pair of melting point measurement device for experiment teaching's work flow does: in the experiment, a crystal sample is ground and then is filled into a specially-made capillary 13, a heat-conducting medium is poured into a container 11, the capillary 13 is arranged in the container, a heating mechanism 12 heats the container 11 to melt the sample, the melting condition of the sample is observed, and the initial melting temperature and the final melting temperature are recorded through a thermometer 14; due to the arrangement of the protective cover 21 which is sleeved on the periphery of the container at intervals, an operator is far away from the container, and the magnifier 232 is used for observing the melting condition of the sample, so that the situation that the operator cannot see clearly due to the fact that the operator is far away from the container is avoided, and the protective mechanism 22 plays a role in shielding; consequently adopt the utility model provides a pair of melting point survey device for experiment teaching, hand and health are difficult to the touching on beaker or capillary when can normally observe the concurrent operation of sample melting condition, and the operating safety is high.
As an alternative embodiment, the protective cover 21 in this embodiment is a circular tubular structure that is communicated up and down; the upper end of the protective cover 21 is lower than the upper end of the container 11, and at least one layer of heat insulation film is adhered to the outer wall of the circumferential end of the protective cover 21. This arrangement may further serve as thermal insulation.
As an alternative embodiment, the guard mechanism comprises:
an elastic arc 221;
a rubber ring 222 arranged at the upper end of the elastic arc-shaped part 221, wherein the elastic arc-shaped part 221 is sleeved with the connecting rod 231 through the rubber ring 222;
and an adhesive sheet 223 disposed at a lower end of the elastic arc 221, wherein the elastic arc 221 is connected to an inner wall of the protective cover 21 through the adhesive sheet 223.
In this embodiment, the upper end of the elastic arc 221 is sleeved on the connecting rod 231; the elastic arc 221 is attached to the inner wall of the protective cover 21 by the adhesive sheet 223. The elastic arc-shaped piece is hemispherical or arc-shaped, and can shield other users.
As an optional implementation manner, the elastic arc-shaped member includes an elastic rubber ring and a heat insulation cloth layer with an arc-shaped surface, and the heat insulation cloth layer is disposed at one radial end of the elastic rubber ring. In this embodiment, the heat insulating cloth layer 2212 is made of a heat insulating cloth having a certain elasticity. The rubber ring 222 is sleeved on the connecting rod 231, the adhesive sheet 223 is adhered to the inner wall of the protective cover 21, and when the connecting rod 231 is inclined at the angle shown in fig. 2, the elastic rubber ring 2211 and the heat-insulating cloth layer 2212 are in a relatively loose state; when the connecting rod 231 is inclined at the angle shown in fig. 3, that is, the lower end of the connecting rod 231 is engaged with the protecting cover 21, the elastic rubber ring 2211 and the heat insulating cloth layer 2212 are under tension.
As an optional embodiment, a clamping groove 211 for clamping the connecting rod 231 is arranged on an outer wall of the circumferential end of the protective cover 21. When the connecting rod 231 is clamped on the clamping groove 211 of the protective cover 21, the elastic arc-shaped part is in a tensioned state;
as an alternative embodiment, as shown in fig. 5, the protection component further includes: a hinge mechanism 24, by which the connection rod 231 is hinged to the outside of the protection cover 21;
the hinge mechanism 24 comprises a hinge ball 241, a spring 242 and a hinge rod 243 which are positioned on the connecting rod 231, wherein the two diametrically opposite sides of the hinge ball 241 are respectively provided with a first hinge hole 2411, and the hinge ball is provided with an assembling hole for penetrating the connecting rod; the springs 242 are arranged in the first hinge holes 2411, and the hinge rods 243 comprise first ends for connecting the springs 242 and second ends for connecting the protective covers 21;
the upper end of safety cover 21 is equipped with hinge interface 212, the radial both ends of hinge interface 212 all are equipped with and are used for wearing to establish articulated pole 243 the second hinge hole 213 of second end.
As shown in fig. 5, specifically, the two ends in the radial direction of the hinge ball 241 are respectively provided with a first hinge hole 2411; the spring 242 and the hinge rod 243 are sequentially connected in the first hinge hole 2411 from inside to outside along the axial direction of the first hinge hole 2411, and one end of the hinge rod 243, which is back to the spring 242, extends out of the first hinge hole 2411;
the upper end of the protective cover 21 is provided with an arc-shaped hinge opening 212; the radial two ends of the hinge interface 212 are provided with second hinge holes 213 matched with the two hinge rod 243;
the hinge ball 241 is also provided with an assembly hole 2412 the axis of which is vertical to the axis of the first hinge hole 2411; the connection rod 231 is connected to the hinge ball 241 through the fitting hole 2412.
When the protective cover 21 is used, the hinge rod 243 is squeezed, the spring 241 is compressed, the hinge rod 243 extends into the first hinge hole 2411, and the hinge ball 241 can be taken down from the hinge opening 212 of the protective cover 21; similarly, the spring 241 can be compressed by pressing the hinge rod 243, the hinge rod 243 extends into the first hinge hole 2411, the hinge ball 241 is placed at the hinge opening and aligned with the hinge rod and the second hinge hole 213, and then under the action of the spring 241, the end of the hinge rod 243 opposite to the spring 242 extends into the second hinge hole 213, so that the hinge ball 241 is installed. Since the connection rod 231 is mounted on the hinge ball 241 through the fitting hole 2412, the connection rod 231 can rotate about the hinge lever 243. In addition, the connecting rod 231 is fixedly connected to the hinge ball 241 by the frictional force between the outer wall of the connecting rod 231 and the fitting hole 2412, and the connecting rod 231 may be directly and completely pulled out of the fitting hole 2412.
As an alternative embodiment, the protection assembly 2 further includes a bearing ring 25 located at the bottom of the protection cover 21, and the lower end of the protection cover 21 is fixedly connected to the upper end of the bearing ring 25.
Specifically, the bearing ring 25, the protective cover 21 and the container 11 are coaxial, and the protective cover 21 can be rotated relative to the container 11 by applying a horizontal pushing force to the connecting rod 231, and the connecting rod 231 connected to the protective cover 21 is also rotated relative to the connecting rod 231, so that the magnifying lens 232 on the connecting rod 231 can change the viewing angle and the orientation.
As an alternative embodiment, as shown in fig. 4, the melting point measuring apparatus for teaching experiments further includes: a fixing assembly 3, the fixing assembly 3 comprising:
a support rod 31 positioned on the measuring instrument body 1;
the fixing rod 32 is horizontally arranged on the supporting rod 31, and the fixing rod 32 is connected with the supporting rod 31 in a sliding mode;
the capillary fixing part 33 comprises a fixing hoop 331 fixedly connected to the fixing rod 32 and a rubber block 332 arranged on the inner wall of the circumferential end of the fixing hoop 331, wherein a through hole 3321 used for penetrating and fixing the capillary 13 is formed in the rubber block 332.
In this embodiment, the fixing rod 32 can slide along the supporting rod 31, so as to adjust the height of the fixing rod 32, specifically, the supporting rod 31 can be a vertically arranged screw, a nut is arranged on the supporting rod 31 below the fixing rod 32, and the height of the fixing rod 32 can be adjusted by adjusting the height of the nut; the fixing lever 32 is located above the container 11.
Optionally, the rubber block 332 is provided with a plurality of through holes 3321, and the diameter of the through holes 3321 is smaller than or equal to the outer diameter of the capillary 13. In this embodiment, there are 4 through holes 3321 on the rubber block 332, and two opposite through holes 3321 are respectively provided with a capillary tube 13. To facilitate melting point determination of two or more samples.
Preferably, the fixing assembly 3 further includes a thermometer fixing member 34, the thermometer fixing member 34 includes a fixing block disposed on the fixing rod 32, and the fixing block is provided with a fixing hole for fixing the thermometer in a penetrating manner.
The thermometer 14 is arranged in the fixing hole of the fixing block in a penetrating way. The thermometer in this embodiment is preferably an electronic thermometer, and may be of the type: rui MR-10H. The electronic thermometer comprises a probe 141 and a display 142 arranged at the upper end of the probe, wherein the lower end of the probe is positioned in the heat-conducting medium, and the display is positioned outside the beaker, so that the temperature reading of the heat-conducting medium obtained by the probe and displayed on the display can be observed conveniently. Compared with the traditional mercury thermometer, the electronic thermometer is safer to use and more convenient to read. The thermometer 14 is an electronic thermometer, and a probe of the electronic thermometer is fixed on the fixed block. The probe of the electronic thermometer in this embodiment is disposed in parallel with the capillary 13.
In an alternative embodiment, the heating mechanism 12 is a heating plate, and an asbestos cloth 15 is arranged between the bottom of the container 11 and the heating plate. The asbestos cloth plays a role in protecting the container. In the embodiment of the present invention, the container 11 is a beaker, and a heat-conducting medium is disposed in the beaker, and the heat-conducting medium is silicone oil; the lower ends of the capillary tube 13 and the thermometer 14 are both arranged in a heat-conducting medium in the beaker; in this embodiment, the bottom of the heating mechanism 12 is a machine body 1, and the machine body 1 and the heating plate 2 are conventional structures.
As an alternative embodiment, the upper end of the container 11 is provided with a cover 16; the cover body is provided with a mounting hole for the capillary tube 13 and the thermometer 14 to penetrate through. The cover 16 further improves safety and prevents the heat transfer medium in the container 11 from splashing and injuring the user.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, system, 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, system, article, or apparatus.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the invention.
It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the embodiments of the present invention and their equivalents, the embodiments of the present invention are also intended to include such modifications and variations.
Claims (10)
1. A melting point measuring device for experiment teaching, comprising:
the analyzer body comprises a container, a heating mechanism for heating the container, a capillary tube and a thermometer, wherein the capillary tube and the thermometer are positioned in the container;
protection subassembly, including safety cover, protection machanism and mechanism of amplification, safety cover distance cover is located the periphery of container, the mechanism of amplification includes the connecting rod and is located the magnifying glass on connecting rod top, the connecting rod articulates the outside of safety cover, protection machanism one end with the safety cover is close to one side of connecting rod is connected, the other end with the connecting rod is connected.
2. The apparatus of claim 1, wherein the shielding mechanism comprises:
an elastic arc-shaped member;
the elastic arc-shaped piece is sleeved with the connecting rod through the rubber ring;
the bonding piece is arranged at the lower end of the elastic arc-shaped piece, and the elastic arc-shaped piece is connected with the inner wall of the protective cover through the bonding piece.
3. The melting point measuring device for experimental teaching as claimed in claim 2, wherein the elastic arc-shaped member includes an elastic rubber ring and a heat insulating cloth layer with an arc-shaped surface, and the heat insulating cloth layer is disposed at one radial end of the elastic rubber ring.
4. The apparatus according to claim 1, wherein the protective assembly further comprises a hinge mechanism, and the connecting rod is hinged to the outer side of the protective cover through the hinge mechanism;
the hinge mechanism comprises a hinge ball, a spring and a hinge rod which are positioned on the connecting rod, first hinge holes are formed in two radially opposite sides of the hinge ball, and an assembling hole for penetrating the connecting rod is formed in the hinge ball; the springs are arranged in the first hinge holes, and the hinge rods comprise first ends used for connecting the springs and second ends used for connecting the protective covers;
the upper end of safety cover is equipped with the hinge interface, the radial both ends of hinge interface all are equipped with and are used for wearing to establish the hinge bar the second hinge hole of second end.
5. The apparatus of claim 1, wherein a groove for engaging the connecting rod is formed on an outer wall of a circumferential end of the protective cover.
6. The apparatus of claim 1, wherein the protective assembly further comprises a bearing ring disposed at a bottom of the protective cover, and a lower end of the protective cover is fixedly connected to an upper end of the bearing ring.
7. The melting point measuring device for teaching experiments according to claim 1, further comprising: a securing assembly, the securing assembly comprising:
the supporting rod is positioned on the tester body;
the fixed rod is horizontally arranged on the supporting rod and is connected with the supporting rod in a sliding manner;
the capillary fixing part comprises a fixing hoop fixedly connected to the fixing rod and a rubber block arranged on the circumferential end inner wall of the fixing hoop, and a through hole used for penetrating and fixing the capillary is formed in the rubber block.
8. The apparatus of claim 7, wherein the through hole is a plurality of through holes.
9. The apparatus as claimed in claim 7, wherein the fixing assembly further comprises a thermometer fixing member, the thermometer fixing member comprises a fixing block disposed on the fixing rod, and the fixing block is provided with a fixing hole for fixing the thermometer.
10. The apparatus of claim 7, wherein the heating mechanism is a heating plate, and an asbestos cloth is disposed between the bottom of the container and the heating plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121105348.9U CN215066280U (en) | 2021-05-21 | 2021-05-21 | Melting point measuring device for experiment teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121105348.9U CN215066280U (en) | 2021-05-21 | 2021-05-21 | Melting point measuring device for experiment teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215066280U true CN215066280U (en) | 2021-12-07 |
Family
ID=79212482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121105348.9U Expired - Fee Related CN215066280U (en) | 2021-05-21 | 2021-05-21 | Melting point measuring device for experiment teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215066280U (en) |
-
2021
- 2021-05-21 CN CN202121105348.9U patent/CN215066280U/en not_active Expired - Fee Related
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Granted publication date: 20211207 |