CN111412749A - Suspension type crucible support for muffle furnace with temperature measurement function - Google Patents
Suspension type crucible support for muffle furnace with temperature measurement function Download PDFInfo
- Publication number
- CN111412749A CN111412749A CN202010385361.8A CN202010385361A CN111412749A CN 111412749 A CN111412749 A CN 111412749A CN 202010385361 A CN202010385361 A CN 202010385361A CN 111412749 A CN111412749 A CN 111412749A
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- Prior art keywords
- sleeve
- temperature
- muffle furnace
- display gauge
- furnace
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
- F27B17/02—Furnaces of a kind not covered by any preceding group specially designed for laboratory use
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D21/00—Arrangements of monitoring devices; Arrangements of safety devices
- F27D21/0014—Devices for monitoring temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a suspended crucible support for a muffle furnace with a temperature measurement function, which comprises a sleeve and an assembly, wherein the assembly is provided with a through hole, the sleeve passes through the through hole and is fixedly connected with the through hole, a thermocouple is arranged in the sleeve, the top end of the sleeve is provided with a temperature display gauge head, the temperature display gauge head comprises a temperature module and a display gauge, the positive electrode and the negative electrode of the temperature module are connected with the positive electrode and the negative electrode of the thermocouple, and the display gauge is connected with the temperature module and used for measuring and displaying the temperature in; the bottom of the sleeve is provided with a hook, the temperature display gauge head is provided with a pull ring, and the sleeve is provided with scales. According to the invention, under the condition that the furnace door does not need to be opened, the crucible filled with materials is placed into the furnace chamber through the exhaust hole at the top of the muffle furnace by using the support, so that the phenomenon of temperature reduction in the furnace caused by opening the furnace door is avoided, and the precision of an isothermal calcination test is improved. By utilizing the support provided by the invention, the muffle furnace can meet the test requirement of isothermal dynamics, and the application range of the muffle furnace is greatly expanded.
Description
Technical Field
The invention relates to the field of test analysis, relates to a device for carrying out a thermal analysis test, and particularly relates to a suspended crucible support for a muffle furnace.
Background
Muffle furnaces are conventional equipment used in laboratories for carrying out thermal calcination tests, and are particularly commonly used for isothermal calcination tests of solid materials. In a muffle furnace, the heating of materials is mainly radiation heat transfer, namely, heat is radiated into a furnace cavity through an electric heating wire or an electric heating rod, so that the heat transfer is completed. The inner wall of the furnace chamber of the muffle furnace is provided with the heat insulation material, so that heat dissipation can be reduced, and constant temperature can be realized. However, the isothermal test using the muffle furnace requires opening of the furnace door when the test sample is put therein, which inevitably results in a sharp decrease in the temperature in the furnace. This phenomenon is more pronounced the higher the temperature is generally set, or the larger the volume of the oven cavity. After the test specimen is placed in the furnace chamber, it will take some time for the muffle to again heat up to the set temperature, during which time the test specimen has already started to react. Generally, the longer the time it takes to reach the set temperature again, the greater the effect on the test. Due to the inherent characteristics of muffle furnaces, non-isothermal phenomena due to the opening of the furnace door are inevitable according to the usual experimental operating methods. For some occasions requiring precise temperature control and timing, the defect of the muffle furnace can have a remarkable influence on the test precision.
Disclosure of Invention
The invention aims to provide a suspended crucible support for a muffle furnace with a temperature measuring function, and the suspended crucible support is used for solving the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme: the invention provides a suspended crucible support for a muffle furnace with a temperature measurement function, which comprises the muffle furnace, wherein a sleeve is arranged on an exhaust hole at the top of the muffle furnace, a combination body is detachably connected onto the sleeve, a thermocouple is arranged in the sleeve, a temperature display gauge outfit is arranged at the top end of the sleeve, the temperature display gauge outfit comprises a temperature module and a display gauge, the positive and negative poles of the temperature module are connected with the positive and negative poles of the thermocouple, and the display gauge is connected with the temperature module and is used for measuring and displaying the temperature in a furnace cavity in real time; the bottom of the sleeve is provided with a hook, the temperature display gauge head is provided with a pull ring, and the sleeve is provided with scales.
Preferably, the assembly includes apron, fixing device, the middle part of apron is equipped with the through-hole, the sleeve pipe pass through fixing device with the through-hole of apron can be dismantled and be connected.
Preferably, the thermocouple is an s-type or k-type standard thermocouple.
Preferably, the fixing device is a sleeve and a fastening screw, and the sleeve and the cover plate are connected through the fastening screw.
Preferably, the sleeve pipe is the pipe, the sleeve pipe bottom is sealed, the sheathed tube material is heat-resisting metal or corundum, pottery, sheathed tube external diameter and muffle furnace exhaust hole's aperture phase-match.
Preferably, the type of the single chip microcomputer used in the temperature display gauge head is AD 595.
The invention discloses the following technical effects: according to the invention, under the condition that the furnace door does not need to be opened, the crucible filled with materials is placed into the furnace chamber through the exhaust hole at the top of the muffle furnace by using the support, so that the phenomenon of temperature reduction in the furnace caused by opening the furnace door is avoided, and the precision of an isothermal calcination test is improved. By utilizing the support provided by the invention, the muffle furnace can meet the test requirement of isothermal dynamics, and the application range of the muffle furnace is greatly expanded.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an example of a method of use of the present invention;
FIG. 3 is a schematic structural diagram of the cover plate of the present invention;
FIG. 4 is a partial circuit diagram of a temperature display gauge head according to the present invention;
wherein, 1 is a sleeve, 2 is a thermocouple, 3 is a temperature display gauge outfit, 4 is a cover plate, 5 is a fixing device, 5.1 is a sleeve part, 5.2 is a fastening bolt, 6 is a hook, 7 is a pull ring, and 8 is a crucible.
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.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1-4, the invention provides a suspended crucible support for a muffle furnace with a temperature measurement function, which comprises the muffle furnace, wherein a sleeve 1 is arranged on an exhaust hole at the top of the muffle furnace, a combination body is detachably connected on the sleeve 1, a thermocouple 2 is arranged in the sleeve 1, a temperature display gauge head 3 is arranged at the top end of the sleeve 1, the temperature display gauge head 3 comprises a temperature module and a display gauge, the positive and negative poles of the temperature module are connected with the positive and negative poles of the thermocouple 2, and the display gauge is connected with the temperature module and used for measuring and displaying the temperature in a furnace cavity in real time; the bottom of sleeve pipe is equipped with the couple, be equipped with pull ring 7 on the temperature display gauge outfit 3, be equipped with the scale on the sleeve pipe 1, be convenient for look over the position that stretches into the muffle furnace.
Further optimize the scheme, the assembly includes apron 4, fixing device 5, the middle part of apron is equipped with the through-hole, sleeve pipe 1 through fixing device 5 with the through-hole of apron can be dismantled and be connected.
According to the further optimization scheme, the sleeve 1 is a slender round pipe, the bottom of the round pipe is sealed, the sleeve is made of heat-resistant metal or corundum, ceramic and the like, and the outer diameter and the length of the pipe are adjusted according to the aperture of the vent hole of the muffle furnace and the size of the furnace chamber.
In a further optimized scheme, the thermocouple 2 adopts an s-type or k-type standard thermocouple and is arranged inside the sleeve 1.
In a further preferred embodiment, the fixing device 5 comprises a sleeve 5.1 and a fastening screw 5.2, the sleeve 5.1 is connected with the cover plate 4 through the fastening screw 5.2, the sleeve 5.1 is connected with the cover plate 4 in a hole-to-hole manner, and the fastening screw 5.2 is vertically installed from the side surface of the sleeve 5.1.
In a further optimized scheme, the cover plate 4 is a disc-shaped structure with a hole in the middle and is made of heat-resistant metal or corundum, ceramic and other materials.
In a further optimized scheme, the hook 6 is made of a heat-resistant metal material and is arranged at the lower end of the sleeve 1.
According to a further optimized scheme, the pull ring 7 is made of a metal material and is installed at the top end of the temperature display gauge head 3.
According to the further optimization scheme, the type of the single chip microcomputer used in the temperature display gauge head is AD 595.
The using method of the suspension type crucible support comprises the following steps: when the suspension type crucible support is used for the first time, the distance from the central position of the furnace chamber of the muffle furnace to the outlet of the top exhaust hole is measured firstly. When the fixing device 5 is loosened and the position of the cover plate 4 is adjusted, the fastening screw 5.2 is tightened when the length from the lower edge of the cover plate 4 to the bottom of the hook is just equal to the measured distance data. During the test, firstly, the temperature of the muffle furnace is raised to a set temperature, then the materials are loaded into the suspended crucible 8, then the crucible 8 is hung on the hook 6, the suspended crucible support is vertically inserted into the furnace chamber from the exhaust hole at the top of the muffle furnace, and the cover plate 4 just covers the outlet of the exhaust hole of the muffle furnace. After the suspended crucible holder was inserted, a timing run was started. After the set time is reached, the suspension type crucible support is carefully pulled out in the vertical direction, and the crucible is taken down and placed into a drying vessel for cooling. The cooled sample was then analyzed to complete the test.
By adopting the device, the furnace door of the muffle furnace does not need to be opened when a sample is put in, the phenomenon of temperature reduction in the furnace caused by opening the furnace door is avoided, and the constant temperature condition of the muffle furnace is ensured not to fluctuate. In muffle furnaces, the actual temperature is not uniform throughout the furnace chamber due to the uneven distribution of the heating wires. By adopting the device, the actual temperature of the position of the sample can be measured and displayed in real time, so that the test precision is improved. By adopting the device, a small-capacity crucible is required to be used during the test, so that the heat transfer condition of the material is improved, the time for the material to be heated from a cold state to a set temperature is shortened to the maximum extent, and the device is also an important factor for improving the precision of the isothermal calcination test. Based on the improvement, the muffle furnace can be applied to aspects such as fine reaction control, isothermal reaction kinetic research and the like by adopting the device, and the application range of the muffle furnace is greatly widened.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (6)
1. The utility model provides a take suspension type crucible support for muffle furnace of temperature measurement function, includes the muffle furnace, its characterized in that: a sleeve is arranged on the exhaust hole in the top of the muffle furnace, a combination is detachably connected to the sleeve, a thermocouple is arranged in the sleeve, a temperature display gauge outfit is arranged at the top end of the sleeve, the temperature display gauge outfit comprises a temperature module and a display gauge, the positive electrode and the negative electrode of the temperature module are connected with the positive electrode and the negative electrode of the thermocouple, and the display gauge is connected with the temperature module and used for measuring and displaying the temperature in the furnace cavity in real time; the bottom of the sleeve is provided with a hook, the temperature display gauge head is provided with a pull ring, and the sleeve is provided with scales.
2. The suspension type crucible support with temperature measuring function for the muffle furnace of claim 1, wherein: the assembly comprises a cover plate and a fixing device, wherein a through hole is formed in the middle of the cover plate, and the sleeve is detachably connected with the through hole of the cover plate through the fixing device.
3. The suspension type crucible support with temperature measuring function for the muffle furnace of claim 1, wherein: the thermocouple adopts an s-type or k-type standard thermocouple.
4. The suspended crucible support with the temperature measuring function for the muffle furnace as claimed in claim 2, wherein: the fixing device comprises a sleeve and a fastening screw, and the sleeve is connected with the cover plate through the fastening screw.
5. The suspension type crucible support with temperature measuring function for the muffle furnace of claim 1, wherein: the sleeve pipe is the pipe, the sleeve pipe bottom is sealed, sheathed tube material is heat-resisting metal or corundum, pottery, sheathed tube external diameter and the aperture phase-match of muffle furnace exhaust hole.
6. The suspension type crucible support with temperature measuring function for the muffle furnace of claim 1, wherein: the type of the single chip microcomputer used in the temperature display gauge head is AD 595.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010385361.8A CN111412749A (en) | 2020-05-09 | 2020-05-09 | Suspension type crucible support for muffle furnace with temperature measurement function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010385361.8A CN111412749A (en) | 2020-05-09 | 2020-05-09 | Suspension type crucible support for muffle furnace with temperature measurement function |
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| Publication Number | Publication Date |
|---|---|
| CN111412749A true CN111412749A (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010385361.8A Pending CN111412749A (en) | 2020-05-09 | 2020-05-09 | Suspension type crucible support for muffle furnace with temperature measurement function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008033A (en) * | 2021-03-30 | 2021-06-22 | 江西理工大学 | High-temperature reaction tube furnace capable of accurately controlling temperature and atmosphere and rapidly quenching sample |
-
2020
- 2020-05-09 CN CN202010385361.8A patent/CN111412749A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008033A (en) * | 2021-03-30 | 2021-06-22 | 江西理工大学 | High-temperature reaction tube furnace capable of accurately controlling temperature and atmosphere and rapidly quenching sample |
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