CN114136084A

CN114136084A - Muffle furnace for laboratory

Info

Publication number: CN114136084A
Application number: CN202111550655.2A
Authority: CN
Inventors: 施庆岗
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-03-04

Abstract

The invention discloses a muffle furnace for a laboratory, which comprises a hearth and a panel furnace wall positioned outside the hearth, wherein at least two furnace cabins which are communicated with each other are arranged in the hearth, each furnace cabin comprises a furnace hatch, the furnace hatches are arranged on the panel furnace wall, and a movable furnace groove is arranged in each furnace cabin. Each movable furnace tank can be heated simultaneously and taken out in different time periods, and a groove for placing a crucible is arranged in each movable furnace tank, so that the crucible can be taken and placed conveniently. The invention has novel and simple design and simple and convenient operation.

Description

Muffle furnace for laboratory

Technical Field

The invention relates to the technical field of high-temperature heating equipment, in particular to a muffle furnace for a laboratory.

Background

Muffle furnaces are widely used. In the analytical chemistry industry, the method can be used for sample treatment in the fields of water quality analysis, environmental analysis and the like, and can also be used for petroleum and analysis thereof; the heat treatment or treatment of small workpieces can be carried out in the industries of heat treatment, industrial workpiece treatment, cement and building materials; in the field of coal quality analysis, the method can be used for determining moisture, ash, volatile matters, ash melting point analysis, ash component analysis and element analysis, and can also be used as a general ashing furnace; in the pharmaceutical industry, the method can be used for the inspection of medicines, the pretreatment of medical samples and the like. Therefore, in the related art, the muffle furnace is a necessary instrument for carrying out related experimental operations.

The muffle furnace is generally required to be heated to a higher temperature when in work, and the furnace body needs to have enough thickness to realize the relevant functions, so that the efficiency of the muffle furnace can be influenced by dividing the muffle furnace into small areas with independent temperature control. The existing muffle furnace is usually an integrally controlled independent furnace chamber, which brings inconvenience to scientific research and production and consumes energy.

The crucible is a common instrument used for loading samples in a muffle furnace, the crucible and a crucible cover are clamped into the furnace or taken out of the furnace by using long-handle crucible tongs during operation, and the samples are knocked over and scalded during related operation, so that great influence is brought to experimental work.

Disclosure of Invention

In order to solve the above problems, it is an object of the present invention to provide a muffle furnace having a plurality of furnace chambers and capable of independently operating the furnace chambers at the same temperature.

The invention also aims to provide the muffle furnace convenient for taking and placing the crucible.

In order to achieve the purpose, the invention is realized by the following technical scheme:

the utility model provides a muffle furnace is used in laboratory, includes furnace and the panel oven that is located the furnace outside, be equipped with two at least furnace cabins that communicate each other in the furnace, the furnace cabin includes the stove hatch, and on the panel oven was located to the stove hatch, every furnace cabin was equipped with the removal fire door.

Preferably, the muffle furnace for the laboratory is characterized in that the movable furnace groove sequentially comprises a first circular table, a crucible bearing boat, a solid cylinder and a second circular table from outside to inside; the first circular table is matched with the furnace hatch; the crucible bearing boat main body is of a semi-cylinder structure, and the arc-shaped surface faces the bottom side; the solid cylinder and the crucible bearing boat are arranged integrally; the second round platform is the same as the first round platform in specification, and the diameters of the second round platform and the first round platform are gradually reduced from outside to inside.

Preferably, the muffle furnace is used in the laboratory, wherein the diameter of the crucible bearing boat and the solid cylinder is the same as the diameter of the smaller end face of the first round table, and the thickness of the solid cylinder is the same as that of the first round table.

Preferably, the muffle furnace is used in the laboratory, wherein a slide way in a shape like a Chinese character 'shan' is arranged at the bottom of the furnace chamber, a slide block in the shape like the Chinese character 'shan' and matched with the slide way is arranged at the bottom of the second round platform, and the slide block is arranged in the slide way.

Preferably, the muffle furnace is used in the laboratory, wherein, the first round platform is provided with a high temperature resistant sealing gasket at the side which is close to the furnace hatch and is contacted with the furnace hatch and the second round platform.

Preferably, the muffle furnace is used in the laboratory, wherein, be equipped with the round platform shape recess that a plurality of is used for placing the crucible in the crucible bears the boat, every round platform shape recess next door still is equipped with the semicircle slice recess that is used for placing the crucible lid.

Preferably, the muffle furnace for the laboratory is characterized in that the depth of the truncated cone-shaped groove is 2-3cm, the diameter of a bottom plane is 2-4cm, and the diameter of an upper plane is 4-6 cm; the diameter of the semicircular flaky groove is 4-6cm, and the width of the semicircular flaky groove is 1-2 cm.

Preferably, the muffle furnace for the laboratory is characterized in that a boat cover hinged to the side of the crucible carrying boat is arranged at the upper part of the crucible carrying boat, the boat cover is a semi-cylindrical cover body, and the boat cover is covered on the crucible carrying boat and then combined with the crucible carrying boat to form a cylinder.

Preferably, the muffle furnace is used in the laboratory, wherein a plurality of through holes are formed in two sides of the boat cover, and the through holes are circular holes with the diameter of 0.4-0.6 cm.

Preferably, the muffle furnace for the laboratory is characterized in that a heat insulation handle is fixed on the outer side of the movable furnace groove, and a furnace groove buckle plate is rotatably connected to the panel furnace wall beside the furnace hatch.

The laboratory with muffle furnace novel structure of present case, the design science. The crucible can be stably placed, and a certain batch of samples can be directly pulled out of the furnace chamber to be slowly cooled after being heated to the experimental time without influencing the continuous heating of other samples. Under the same temperature control, the experimental sample can be conveniently taken out in different time periods, and the device is safe and reliable to use and simple, convenient and quick to operate.

Drawings

FIG. 1 is a schematic perspective view of a muffle for a laboratory according to an embodiment of the invention, wherein a furnace chamber is in an open state;

FIG. 2 is a schematic cross-sectional perspective view of a muffle for a laboratory according to an embodiment of the invention, wherein a chamber is in an open state;

FIG. 3 is a schematic perspective view of a muffle chamber of a laboratory according to one embodiment of the invention;

fig. 4 is a schematic cross-sectional view of a slide and a slide of a laboratory muffle according to an embodiment of the invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

As shown in fig. 1-4, this embodiment provides a muffle furnace for laboratory use, which includes a furnace chamber 7 and a panel furnace wall 1 located outside the furnace chamber 7, and is characterized in that at least two furnace chambers communicated with each other are arranged in the furnace chamber 7, the furnace chambers include furnace hatches 2, the furnace hatches 2 are arranged on the panel furnace wall 1, and a movable furnace slot 3 is arranged in each furnace chamber. Each movable furnace groove 3 can be heated simultaneously and taken out in different time periods, so that different requirements are met.

The movable furnace tank 3 sequentially comprises a first round table 32, a crucible bearing boat 33, a solid column 34 and a second round table 35 from outside to inside; the first boss 32 is adapted to the furnace hatch; the crucible bearing boat 33 is of a semi-cylindrical structure, and the arc-shaped surface faces the bottom side; the solid column 34 and the crucible carrying boat 33 are arranged integrally; the second round platform 35 has the same specification as the first round platform 32, and the diameters of the second round platform 35 and the first round platform 32 are both gradually reduced from outside to inside. After the crucible is placed into the movable furnace groove 3, the movable furnace groove 3 is pushed into the hearth 7, so that the hearth 7 can be sealed, and the sealing is convenient and fast.

The diameter of the crucible carrying boat 33 and the solid cylinder 34 is the same as that of the smaller end surface of the first round table 32, and the thickness of the solid cylinder 34 is the same as that of the first round table 32. When the crucible heating time is up, the movable furnace trough 3 is pulled out, and the second circular truncated cone 35 of the movable furnace trough 3 can be abutted against the inner side of the furnace hatch 2, so that the temperature stability in the hearth 7 is ensured.

The bottom of the furnace cabin is provided with a Chinese character 'shan' shaped slide way 6, the bottom of the second round platform 35 is provided with a Chinese character 'shan' shaped slide block 5 matched with the slide way 6, and the slide block 5 is arranged in the slide way 6. The sliding block 5 and the slideway 6 are in a shape of Chinese character 'shan', so that the movable furnace groove 3 can stably slide.

The first round platform 32 is provided with a high-temperature-resistant sealing gasket at the contact part with the furnace hatch and at one side of the second round platform 35 close to the furnace hatch. The high-temperature-resistant sealing gasket can improve the sealing property of the muffle furnace.

The crucible carrying boat 33 is provided with a plurality of truncated cone-shaped grooves 331 for holding crucibles, and a semicircular sheet-shaped groove 332 for holding a crucible cover is arranged beside each truncated cone-shaped groove 331. The crucible is arranged in the truncated cone-shaped groove 331, the crucible cover can be arranged in the semicircular sheet-shaped groove 332, the crucible can be prevented from overturning, the inner diameters of the truncated cone-shaped groove 331 are different, the crucible cover can adapt to crucibles with different sizes, is stable, and is not easy to topple when moving.

The depth of the truncated cone-shaped groove 331 is 2-3cm, the diameter of the bottom plane is 2-4cm, and the diameter of the upper plane is 4-6 cm; the diameter of the semicircular sheet-shaped groove 332 is 4-6cm, and the width is 1-2 cm. The size is suitable for loading a common crucible with 20mL-50mL and a crucible cover thereof.

The upper part of the crucible bearing boat 33 is provided with a boat cover 333 hinged with the side part of the crucible bearing boat 33, the boat cover 333 is a semi-cylindrical cover body, and the boat cover 333 is covered on the crucible bearing boat 33 and then is combined with the crucible bearing boat 33 into a cylinder. The boat lid 333 can prevent the crucible from falling into the hearth 7 as impurities and can prevent the crucible from being quenched just after the sliding hearth is pulled out of the hearth 7.

The boat cover 333 is provided with a plurality of through holes 3331 on both sides, and the through holes 3331 are circular holes of 0.4-0.6 cm. The through hole 3331 in the side surface of the boat lid 333 communicates the inside and outside of the moving furnace vessel 3.

A heat insulation handle 31 is fixed on the outer side of the movable furnace groove 3, and a furnace groove buckle plate 4 is rotatably connected on the panel furnace wall 1 beside the furnace hatch 2. The heat insulation handle 32 is used for pulling the movable furnace tank 3, and the furnace tank buckle plate 4 is used for fixing the movable furnace tank 3.

When a sample is loaded, the movable furnace groove 3 is pulled out, the boat cover 333 is opened, the crucible is placed in the circular truncated cone-shaped groove 331, the crucible cover is placed in the semicircular sheet-shaped groove 332, and after the boat cover 333 is covered, the movable furnace groove 3 is pushed into the furnace chamber and the furnace groove buckle plate 4 is rotated to enable the first circular truncated cone 32 to be completely sealed with the opening of the furnace chamber 2. When the heating time is up to take out the sample, the furnace slot buckle plate 4 is rotated and the movable furnace slot 3 is pulled out, at the moment, the second round table 35 is clamped at the inner side of the furnace hatch 2, so that the temperature in the hearth 7 is kept constant, and other furnace cabins continue to maintain the heating state. The boat lid 333 of the movable furnace vessel 3 pulled out of the furnace chamber 7 is opened by crucible tongs, and the crucibles can be taken out one by one and put into the drying oven.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. The utility model provides a muffle furnace is used in laboratory, includes furnace and the panel oven that is located the furnace outside, its characterized in that, be equipped with the furnace chamber of two at least intercommunications each other in the furnace, the furnace chamber includes the furnace hatch, and on the panel oven was located to the furnace hatch, every furnace in-cabin was equipped with the removal fire door.

2. The muffle furnace for laboratory use of claim 1, wherein the moving furnace bath comprises, from outside to inside, a first circular table, a crucible carrying boat, a solid cylinder, and a second circular table; the first circular table is matched with the furnace hatch; the crucible bearing boat main body is of a semi-cylinder structure, and the arc-shaped surface faces the bottom side; the solid cylinder and the crucible bearing boat are arranged integrally; the second round platform is the same as the first round platform in specification, and the diameters of the second round platform and the first round platform are gradually reduced from outside to inside.

3. The laboratory muffle of claim 2 wherein the crucible support boat and solid cylinder have a diameter that is the same as the diameter of the smaller end surface of the first circular table, and wherein the solid cylinder has a thickness that is the same as the thickness of the first circular table.

4. The muffle furnace for the laboratory according to claim 2, wherein a slide way in a shape like a Chinese character 'shan' is arranged at the bottom of the furnace chamber, and a slide block in a shape like a Chinese character 'shan' and matched with the slide way is arranged at the bottom of the second circular truncated cone, and the slide block is arranged in the slide way.

5. The muffle for laboratory use of claim 2, wherein a portion of the first circular table contacting the furnace hatch and a side of the second circular table adjacent to the furnace hatch are provided with high temperature resistant gaskets.

6. The muffle furnace for laboratory use as claimed in claim 2, wherein the crucible carrying boat is provided with a plurality of truncated cone-shaped grooves for holding crucibles, and a semicircular sheet-shaped groove for holding a crucible cover is provided beside each of the truncated cone-shaped grooves.

7. The laboratory muffle of claim 6 wherein the frustoconical recess is 2-3cm deep, has a bottom planar diameter of 2-4cm and an upper planar diameter of 4-6 cm; the diameter of the semicircular flaky groove is 4-6cm, and the width of the semicircular flaky groove is 1-2 cm.

8. The muffle furnace for laboratory use as claimed in claim 2, wherein the crucible carrying boat is provided at an upper portion thereof with a boat cover hinged to a side portion of the crucible carrying boat, the boat cover is a semi-cylindrical cover body, and the boat cover is combined with the crucible carrying boat into a cylindrical body after being covered on the crucible carrying boat.

9. The muffle for laboratory use according to claim 8, wherein the boat cover has a plurality of through holes on both sides, and the through holes are circular openings with a diameter of 0.4-0.6 cm.

10. The muffle for laboratory use according to claim 1, wherein a heat insulation handle is fixed outside the movable furnace slot, and a furnace slot buckle is provided on the panel furnace wall beside the furnace hatch.