Dust collection and ventilation device of high-temperature furnace

Abstract

The utility model discloses a dust collection and ventilation device of a high-temperature furnace, belongs to the field of metallurgical furnace equipment, and solves the problems that when the existing high-temperature furnace works, substances taken away by exhausted smoke and smoke dust are difficult to collect, and air or oxygen cannot be blown into the high-temperature furnace according to process requirements. The smoke collecting tank is connected with the high-temperature furnace through a collecting pipe, one end of the collecting pipe extends into the smoke collecting tank, an exhaust pipe is arranged on the top of the smoke collecting tank, a first stop valve is arranged on the exhaust pipe, a gas conveying pipe is installed on the high-temperature furnace, one end of the gas conveying pipe extends into the smoke collecting tank, and a fan is installed at the end of the gas conveying pipe. The gas conveying pipe is further provided with a gas inlet pipe, and the gas inlet pipe is provided with a second stop valve. The device is simple in structure and stable in installation, not only can efficiently and quickly collect volatile matters in flue gas and smoke dust, but also can introduce gas according to process requirements, and has extremely high generalization performance.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical furnace and kiln equipment, specifically relating to a dust collection and ventilation device for a high-temperature furnace. Background Technology

[0002] High-temperature furnaces are common heat treatment equipment in metallurgical research institutes and university laboratories. They are fine for processing general materials, but it is difficult to process complex materials containing volatiles and to understand the distribution and orientation of each element in the material. Furthermore, they cannot be used for processes requiring special atmospheres.

[0003] Currently, high-temperature furnaces used in the smelting industry operate in a closed gas protection environment. When the furnace is opened and materials are discharged, a large amount of volatiles are released. The smelting industry's method of handling this is to use a large dust collection hood, also known as a smoke chamber, to store the flue gas and dust that the induced draft fan cannot suck up in time, and then slowly extract them. At this time, the flue gas and dust will carry away the substances inside the high-temperature furnace, making it impossible to analyze the material information normally. At the same time, some high-temperature furnaces need to introduce oxygen and other gases during processing according to process requirements, but high-temperature furnaces do not have other air inlets, making it difficult to introduce gases. Utility Model Content

[0004] This invention provides a dust collection and ventilation device for a high-temperature furnace, which solves the problem that the flue gas and dust discharged during the operation of existing high-temperature furnaces carry away low-melting-point substances, making them difficult to collect, and that it is impossible to blow air or oxygen into the high-temperature furnace according to process requirements.

[0005] The technical solution of this utility model is: a dust collection and ventilation device for a high-temperature furnace, including a flue gas collection tank, which is connected to the high-temperature furnace through a collection pipe. One end of the collection pipe extends into the high-temperature furnace. An exhaust pipe is provided at the top of the flue gas collection tank, and a first shut-off valve is provided on the exhaust pipe. A gas supply pipe is installed on the high-temperature furnace, with one end of the gas supply pipe extending into the high-temperature furnace. A fan is installed at the end of the gas supply pipe, and an air inlet pipe is also provided on the gas supply pipe. A second shut-off valve is provided on the air inlet pipe.

[0006] As a further improvement of this utility model, it also includes a circulating water chiller, the cooling water pipes of which are coiled around the periphery of the flue gas collection tank.

[0007] As a further improvement of this utility model, the portions of the collecting pipe and the gas conveying pipe that extend into the high-temperature furnace are made of corundum tubes.

[0008] The beneficial effects of this utility model are as follows: By connecting the flue gas collection tank to the high-temperature furnace, the flue gas and dust enter the collection tank along the collection pipe, efficiently collecting volatiles from the flue gas and dust. The gas in the collection tank is then vented through the exhaust pipe. A fan and air inlet pipe are also installed, allowing gas to be introduced into the high-temperature furnace at any time according to process requirements to complete the reaction. Furthermore, the flue gas collection tank is cooled by a circulating water chiller, enabling it to quickly collect volatiles from the flue gas and dust, eliminating the risk of water leakage and avoiding safety hazards. This utility model has a simple structure and stable installation. It not only efficiently and quickly collects volatiles from flue gas and dust but also allows for the introduction of gas according to process requirements, making it highly applicable. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] In the diagram: 1. High-temperature furnace; 2. Flue gas collection tank; 3. Circulating water chiller; 4. Fan; 5. Second shut-off valve; 6. First shut-off valve; 7. Collection pipe; 8. Inlet pipe; 10. Exhaust pipe; 12. Cooling water pipe; 13. Gas transmission pipe. Detailed Implementation

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] like Figure 1 As shown, a dust collection and ventilation device for a high-temperature furnace includes a flue gas collection tank 2, which is connected to the high-temperature furnace 1 via a collection pipe 7. One end of the collection pipe 7 extends into the high-temperature furnace 1. An exhaust pipe 10 is provided at the top of the flue gas collection tank 2, and a first shut-off valve 6 is provided on the exhaust pipe 10. A gas supply pipe 13 is installed on the high-temperature furnace 1, with one end of the gas supply pipe 13 extending into the high-temperature furnace 1. A fan 4 is installed at the end of the gas supply pipe 13, and an air inlet pipe 8 is also provided on the gas supply pipe 13. A second shut-off valve 5 is provided on the air inlet pipe 8.

[0013] It also includes a circulating water chiller 3, whose cooling water pipes 12 are coiled around the outside of the flue gas collection tank 2.

[0014] The sections of the collecting pipe 7 and the gas supply pipe 13 that extend into the high-temperature furnace 1 are made of corundum.

[0015] In use, according to process requirements, the required gas can be connected to the inlet pipe 8 via a flexible hose. Start the high-temperature furnace 1 and heat it to the working temperature. Then, open the second shut-off valve 5 and the fan 4 to introduce the gas into the high-temperature furnace 1 through the gas delivery pipe 13. During the reaction, as the temperature of the high-temperature furnace 1 continues to rise, once the material in the high-temperature furnace 1 begins to react, start the flue gas collection tank 2, open the first shut-off valve 6, and start the circulating water chiller 3. The coolant will then cool the flue gas collection tank 2 through the cooling water pipe 12, and the coolant carrying away the heat will be returned to the circulating water chiller 3. This achieves a highly efficient cooling effect, eliminates the risk of water leakage, and avoids safety hazards. Because of the cooling, the first shut-off valve 6 only releases flue gas, while the low-melting-point substances and dust carried away with the flue gas and dust are still collected in the dust collection tank 2.

[0016] After the material in the high-temperature furnace 1 has been heat-treated to the required level, the test is terminated. The second shut-off valve 5 and the fan 4 are closed, which stops the gas supply to the high-temperature furnace 1. At the same time, the power supply to the high-temperature furnace 1 is turned off, but the flue gas collection tank 2 and the circulating water chiller 3 are still turned on to collect all the material in the flue gas and dust. After the flue gas collection tank 2 cools down to room temperature, the circulating water chiller 3 is turned off, the gas in the flue gas collection tank 4 is emptied, and finally the flue gas collection tank 2 is disassembled to collect the discharged material.

Claims

1. A dust collection and ventilation device for a high-temperature furnace, characterized in that: It includes a flue gas collection tank (2), which is connected to the high-temperature furnace (1) through a collection pipe (7). The top of the flue gas collection tank (2) is provided with an exhaust pipe (10), and a first shut-off valve (6) is provided on the exhaust pipe (10). A gas supply pipe (13) is installed on the high-temperature furnace (1), and a fan (4) is installed at the end of the gas supply pipe (13). An air inlet pipe (8) is also provided on the gas supply pipe (13), and a second shut-off valve (5) is provided on the air inlet pipe (8).

2. The dust collection and ventilation device for a high-temperature furnace according to claim 1, characterized in that: It also includes a circulating water chiller (3), whose cooling water pipes (12) are coiled around the outside of the flue gas collection tank (2).

3. A dust collection and ventilation device for a high-temperature furnace according to claim 1 or 2, characterized in that: The portion of the collecting pipe (7) and the gas supply pipe (13) that extends into the high-temperature furnace (1) is made of corundum.

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