CN209783261U - Muffle furnace rapid cooling device - Google Patents
Muffle furnace rapid cooling device Download PDFInfo
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- CN209783261U CN209783261U CN201920226968.4U CN201920226968U CN209783261U CN 209783261 U CN209783261 U CN 209783261U CN 201920226968 U CN201920226968 U CN 201920226968U CN 209783261 U CN209783261 U CN 209783261U
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- pipe
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Abstract
A muffle furnace rapid cooling device belongs to the technical field of experimental muffle furnace auxiliary accessories. The device comprises a furnace body shell, wherein a heat insulation furnace door is arranged on the furnace body shell, a heat insulation material and a hearth material are sequentially arranged in the furnace body shell, a heating element is arranged in the hearth, and an electric thermocouple extends into the hearth and is connected with a controller through a cable; a protective cover is also arranged in the hearth; a water tank is arranged below the muffle furnace, one end of the circulating cooling pipe is connected with a submersible pump in the water tank, the other end of the circulating cooling pipe penetrates through the hearth and returns to the water tank, and an electric valve of the circulating cooling pipe is arranged at the outlet of the submersible pump of the circulating cooling pipe; the hearth is also internally provided with a heat radiation fan, a ventilation pipe is arranged near the heat radiation fan to communicate the hearth with the upper part of the water tank, and the ventilation pipe is provided with an electric valve of the ventilation pipe. The device transmits a hearth temperature signal to the controller by means of the thermocouple, the controller firstly operates the circulating water cooling system, and after the temperature is reduced to 200 ℃, the controller starts the air cooling system to quickly reduce the temperature in the hearth of the muffle furnace to the normal temperature.
Description
Technical Field
The utility model relates to a muffle furnace rapid cooling device belongs to muffle furnace auxiliary fitting technical field for the experiments.
Background
The muffle furnace is widely applied to the fields of steel, coal, sewage treatment plants, pharmacy, synthetic rubber and the like, but most of muffle furnaces are naturally cooled in a cooling link, and because the space in the hearth of the muffle furnace is small and the heat preservation layer is thick, heat dissipation is slow, the furnace temperature can be cooled to the room temperature within about 2 hours, and the time is long. And a few muffle furnaces on the market are improved, the temperature in the hearth is reduced by adopting forced convection of a fan in the cooling link, and although the cooling effect of the muffle furnaces is better than that of the traditional muffle furnaces, the cooling effect is improved to a limited extent.
Disclosure of Invention
In order to solve the problem that the temperature in the furnace chamber drops too slowly in the cooling link in the use of the prior muffle furnace, the utility model provides a muffle furnace rapid cooling device. The device transmits a hearth temperature signal to the controller by means of the thermocouple, the controller firstly operates the circulating water cooling system, and after the temperature is reduced to 200 ℃, the controller starts the air cooling system again, so that the temperature in the hearth of the muffle furnace is finally and rapidly reduced to the normal temperature.
The utility model adopts the technical proposal that: a muffle furnace rapid cooling device comprises a furnace body shell, wherein a heat insulation furnace door is arranged on the furnace body shell, a heat insulation material and a hearth material are sequentially arranged in the furnace body shell, a heating element is arranged in a hearth formed by the hearth material, and a thermocouple extends into the hearth and is connected with a controller through a cable; a protective cover is also arranged in the hearth; a water tank is arranged below the muffle furnace, one end of the circulating cooling pipe is connected with a submersible pump in the water tank, the other end of the circulating cooling pipe penetrates through the hearth and returns to the water tank, and an electric valve of the circulating cooling pipe is arranged at the outlet of the submersible pump of the circulating cooling pipe; a heat radiation fan is also arranged in the hearth, an air exchange pipe is arranged near the heat radiation fan to communicate the hearth with the upper part of the water tank, and an electric valve of the air exchange pipe is arranged on the air exchange pipe; the electric thermocouple, the heating element, the electric valve of the circulating cooling pipe, the heat radiation fan, the electric valve of the scavenging pipe and the submersible pump are all connected with the controller through cables.
The controller adopts a PLC controller.
The utility model has the advantages that: the muffle furnace rapid cooling device comprises a furnace body shell, wherein a heat insulation furnace door is arranged on the furnace body shell, a heat insulation material and a hearth material are sequentially arranged in the furnace body shell, a heating element is arranged in a hearth formed by the hearth material, and a thermocouple extends into the hearth and is connected with a controller through a cable; a protective cover is also arranged in the hearth; a water tank is arranged below the muffle furnace, one end of the circulating cooling pipe is connected with a submersible pump in the water tank, the other end of the circulating cooling pipe penetrates through the hearth and returns to the water tank, and an electric valve of the circulating cooling pipe is arranged at the outlet of the submersible pump of the circulating cooling pipe; a heat radiation fan is also arranged in the hearth, an air exchange pipe is arranged near the heat radiation fan to communicate the hearth with the upper part of the water tank, and an electric valve of the air exchange pipe is arranged on the air exchange pipe; the electric thermocouple, the heating element, the electric valve of the circulating cooling pipe, the heat radiation fan, the electric valve of the scavenging pipe and the submersible pump are all connected with the controller through cables. The device transmits a hearth temperature signal to the controller by means of the thermocouple, the controller firstly operates the circulating water cooling system, and after the temperature is reduced to 200 ℃, the controller starts the air cooling system again, so that the temperature in the hearth of the muffle furnace is finally and rapidly reduced to the normal temperature.
Drawings
FIG. 1 is a schematic view of a muffle furnace rapid cooling device.
In the figure: 1. the furnace comprises a controller, 2, a furnace body shell, 3, a heat insulation material, 4, a hearth material, 5, a thermocouple, 6, a heating element, 7, a circulating cooling pipe, 8, an electric valve of the circulating cooling pipe, 9, a heat dissipation fan, 10, a ventilation pipe, 11, an electric valve of the ventilation pipe, 12, a submersible pump, 13, a protective cover, 14, a water tank, 15 and a heat insulation furnace door.
Detailed Description
FIG. 1 is a schematic view of a muffle furnace rapid cooling device. The muffle furnace rapid cooling device comprises a furnace body shell 2, wherein a heat insulation furnace door 15 is arranged on the furnace body shell 2, a heat insulation material 3 and a hearth material 4 are sequentially arranged in the furnace body shell 2, a heating element 6 is arranged in a hearth formed by the hearth material 4, and a thermocouple 5 extends into the hearth and is connected with a controller 1 through a cable; a protective cover 13 is also arranged in the hearth; a water tank 14 is arranged below the muffle furnace, one end of the circulating cooling pipe 7 is connected with a submersible pump 12 in the water tank 14, the other end of the circulating cooling pipe passes through the hearth and returns to the water tank 14, and an electric valve 8 of the circulating cooling pipe is arranged at the outlet of the submersible pump 12 of the circulating cooling pipe 7; a heat radiation fan 9 is also arranged in the hearth, an air exchange pipe 10 is arranged near the heat radiation fan 9 to communicate the hearth with the upper part of the water tank, and an air exchange pipe electric valve 11 is arranged on the air exchange pipe 10; the electric thermocouple 5, the heating element 6, the electric valve 8 of the circulating cooling pipe, the heat radiation fan 9, the electric valve 11 of the scavenging pipe and the submersible pump 12 are all connected with the controller 1 through cables.
The controller 1 adopts a PLC controller.
The controller adopts PLC, the PLC can be a programmable logic controller, and the programmable logic controller is a digital operation electronic system specially designed for application in industrial environment. It uses a programmable memory, in which the instructions for implementing logical operation, sequence control, timing, counting and arithmetic operation are stored, and utilizes digital or analog input and output to control various mechanical equipments or production processes. The simplest Siemens S7 series PLC commonly used in the market at present has small volume, high speed and standardization, has network communication capacity, stronger function and higher reliability, the S7-200 PLC (6 ES7211-0BA23-0XB0, AC/DC/relay, 6-point input and 4-point output) is a microminiaturized PLC which is suitable for automatic detection, monitoring and control and the like in various industries and various occasions, and the powerful function of the S7-200 PLC ensures that the PLC can realize complex control function no matter a single machine runs or a connected network.
By adopting the technical scheme, a sample to be burnt is placed into the furnace chamber (if the sample needs to be covered with the protective cover during ash content experiments), the temperature is adjusted to the temperature needing to be burnt on the controller, the heat insulation furnace door is closed, the thermocouple can transmit the temperature signal to the controller in real time during the burning process, when the temperature needs to be reduced after the burning is finished, the controller can automatically open the submersible pump and the electric valve of the circulating cooling pipe, cooling water is lifted into the circulating cooling pipe by the submersible pump, the cooling water exchanges heat with high-temperature gas in the furnace, and the cooling water after the heat exchange flows into the water tank again for water cooling. When the temperature in the furnace is reduced to 200 ℃, the controller automatically opens the heat dissipation fan and the electric valve of the air exchange pipe which are arranged in the hearth, the fan generates turbulent flow to discharge the gas with higher temperature in the hearth into the water tank through the air exchange pipe, and the purpose of quickly cooling is achieved, and when the temperature in the furnace reaches 30 ℃, the controller automatically closes the electric valve of the circulating cooling pipe, the heat dissipation fan, the electric valve of the air exchange pipe and the submersible pump.
Claims (2)
1. The utility model provides a muffle furnace rapid cooling device, it includes furnace body shell (2), is equipped with adiabatic furnace gate (15) on furnace body shell (2), is equipped with insulation material (3) and furnace material (4) in proper order in furnace body shell (2), its characterized in that: the heating element (6) is arranged in a hearth formed by hearth materials (4), and the electric thermocouple (5) extends into the hearth and is connected with the controller (1) through a cable; a protective cover (13) is also arranged in the hearth; a water tank (14) is arranged below the muffle furnace, one end of the circulating cooling pipe (7) is connected with a submersible pump (12) in the water tank (14), the other end of the circulating cooling pipe passes through the hearth and returns to the water tank (14), and an electric valve (8) of the circulating cooling pipe is arranged at the outlet of the submersible pump (12) of the circulating cooling pipe (7); a heat radiation fan (9) is also arranged in the hearth, an air exchange pipe (10) is arranged near the heat radiation fan (9) to communicate the hearth with the upper part of the water tank, and an electric valve (11) of the air exchange pipe is arranged on the air exchange pipe (10); the electric thermocouple (5), the heating element (6), the electric valve (8) of the circulating cooling pipe, the heat radiation fan (9), the electric valve (11) of the scavenging pipe and the submersible pump (12) are all connected with the controller (1) through cables.
2. The muffle furnace rapid cooling device according to claim 1, characterized in that: the controller (1) adopts a PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920226968.4U CN209783261U (en) | 2019-02-25 | 2019-02-25 | Muffle furnace rapid cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920226968.4U CN209783261U (en) | 2019-02-25 | 2019-02-25 | Muffle furnace rapid cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209783261U true CN209783261U (en) | 2019-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920226968.4U Active CN209783261U (en) | 2019-02-25 | 2019-02-25 | Muffle furnace rapid cooling device |
Country Status (1)
| Country | Link |
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| CN (1) | CN209783261U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112877533A (en) * | 2021-01-13 | 2021-06-01 | 江苏建中新材料科技有限公司 | Heat treatment equipment and process suitable for manufacturing steel pipe for car transmission shaft |
-
2019
- 2019-02-25 CN CN201920226968.4U patent/CN209783261U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112877533A (en) * | 2021-01-13 | 2021-06-01 | 江苏建中新材料科技有限公司 | Heat treatment equipment and process suitable for manufacturing steel pipe for car transmission shaft |
| CN112877533B (en) * | 2021-01-13 | 2021-09-24 | 江苏建中新材料科技有限公司 | Heat treatment equipment and process suitable for manufacturing steel pipe for car transmission shaft |
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