Dust collection device and dust removal equipment for intermediate frequency furnace

Abstract

The invention provides a dust collection device and dust removal equipment for an intermediate frequency furnace, the dust collection device comprises a dust collection cover, a smoke collection port and a dust removal pipeline, the dust collection cover is provided with a smoke exhaust grid screen, the dust collection cover is used for covering a furnace opening of the intermediate frequency furnace, the smoke collection port is communicated with the dust collection cover, one end of the dust removal pipeline is communicated with the smoke collection port, and the other end of the dust removal pipeline is communicated with a dust remover. Smoke is completely sucked into the dust remover through the smoke exhaust grid screen of the dust collection cover, the structure is simple, convenience and feasibility are achieved, the labor intensity is relieved, the working efficiency is improved, and meanwhile the safety risk that workers are scalded is eliminated.

Description

Technical Field

[0001] The present application belongs to the technical field of fume collection of molten metal furnaces in the metallurgical industry, and specifically relates to a dust collecting device and dust removal equipment for a medium frequency furnace. Background Art

[0002] A medium frequency furnace is a power supply device that converts 50Hz industrial frequency alternating current into medium frequency (above 300Hz and 1000Hz), rectifies three-phase industrial frequency alternating current into direct current, and then converts the direct current into an adjustable medium frequency current. The medium frequency alternating current flowing through the capacitor and induction coil generates high-density magnetic lines in the induction coil, cuts the metal material contained in the induction coil, and generates large eddy currents in the metal material.

[0003] During the melting process of ferrophosphorus, a large amount of harmful fumes will be generated. These gases are not only very harmful to the human body, but also cause serious air pollution when directly discharged. The traditional dust collection method is to install a rotatable dust collection hood above the medium frequency furnace, cover the furnace hood when iron is smelted, and remove the hood when water is discharged, which not only increases the workload, but also poses a risk of burns to personnel. Summary of the invention

[0004] The technical problem solved by the present application is: how to provide a dust collecting device for a medium frequency furnace which is easy to use and safe.

[0005] The present application provides a dust collecting device for a medium frequency furnace, the dust collecting device comprising:

[0006] A dust collecting hood, wherein the dust collecting hood is provided with a smoke exhaust screen, and the dust collecting hood is used to cover the furnace opening of the medium frequency furnace;

[0007] A smoke collecting port, the smoke collecting port being connected to the dust collecting hood;

[0008] A dust removal duct, one end of which is connected to the smoke collecting port, and the other end of which is connected to a dust collector.

[0009] Optionally, the dust collecting hood is an annular dust collecting hood with a hollow interior.

[0010] Optionally, the smoke exhaust screen is provided on the inner wall of the annular dust collecting hood.

[0011] Optionally, there are multiple smoke exhaust grid screens, and the multiple smoke exhaust grid screens are distributed at intervals along the inner wall of the annular dust collecting hood.

[0012] Optionally, the smoke collecting port is connected to the outer wall of the annular dust collecting hood.

[0013] Optionally, the smoke collecting port is a trumpet-shaped pipe, and the pipe diameter of the smoke collecting port gradually decreases in a direction away from the dust collecting hood.

[0014] The present application also provides a dust removal device, which includes a dust collector and a dust collecting device for a medium frequency furnace, and the dust collector is connected to a dust removal pipeline.

[0015] Optionally, the dust removal equipment further includes a fan, and the fan is connected to the dust collector.

[0016] The dust collecting device for a medium frequency furnace provided in the present application has the following technical effects:

[0017] The smoke exhaust screen of the dust hood can be used to completely suck the smoke into the dust collector. It has a simple structure, is convenient and easy to operate, reduces labor intensity, improves work efficiency, and eliminates the safety risk of burns to personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a dust collecting device for a medium frequency furnace according to one or more embodiments;

[0019] Figure 2 is a schematic diagram of a dust removal device according to one or more embodiments. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] Before describing in detail each embodiment of the present application, the technical concept of the present application is briefly described first: At present, when collecting dust from a medium frequency furnace, a rotatable dust hood is usually installed, which has technical problems of being inconvenient and unsafe to use. To this end, the dust collecting device for a medium frequency furnace provided by the present application includes a dust collecting hood, a smoke collecting port and a dust removal duct connected in sequence. The dust collecting hood has a smoke exhaust screen for collecting smoke from the furnace port of the medium frequency furnace, which is convenient for exhausting smoke and safe in use. The specific principle of the dust collecting device for a medium frequency furnace of the present application is described below in combination with more embodiments.

[0022] Specifically, Figure 1 and Figure 2 As shown, the dust collecting device for the medium frequency furnace in the first embodiment includes a dust collecting hood 10, a smoke collecting port 20 and a dust removal duct 30. The dust collecting hood 10 is provided with a smoke exhaust screen 11. The dust collecting hood 10 is used to cover the furnace port of the medium frequency furnace 40. The smoke collecting port 20 is connected to the dust collecting hood 10. One end of the dust removal duct 30 is connected to the smoke collecting port, and the other end of the dust removal duct 30 is connected to the dust collector 50. After the dust collector 50 is started, negative pressure is generated in the dust collecting hood 10, the smoke collecting port 20 and the dust removal duct 30, and the smoke is sucked into the smoke exhaust screen 11 and finally discharged through the dust collector 50.

[0023] In one or more embodiments, the dust hood 10 is an annular dust hood with a hollow interior. Exemplarily, the dust hood 10 is O-shaped, and its inner diameter is slightly larger than the furnace mouth of the medium frequency furnace. The outer diameter can be designed according to the amount of smoke to timely and fully absorb the smoke in the medium frequency furnace. The use of an annular dust hood is convenient for following the edge of the furnace mouth of the medium frequency furnace. When water is discharged during operation, there is no need to remove the annular dust hood, which ensures the normal operation of the operation, reduces labor intensity, improves work efficiency, and eliminates the safety risk of scalding. Exemplarily, the annular dust hood can be installed at the furnace mouth of the medium frequency furnace by flange bolts.

[0024] In one or more embodiments, a smoke exhaust screen 11 is provided on the inner wall of the annular dust hood. For example, there are multiple smoke exhaust screens 11, and the multiple smoke exhaust screens 11 are spaced apart along the inner wall of the annular dust hood. On the basis of effectively inhaling the smoke from the furnace port of the medium frequency furnace by using the smoke exhaust screen 11, the filtering effect of the smoke exhaust screen 11 can prevent other materials from entering the inside of the annular dust hood, and the smoke exhaust screen 11 also has a noise reduction effect.

[0025] In one or more embodiments, the smoke collecting port 20 is connected to the outer wall of the annular dust collecting hood. The smoke collecting port 20 is a trumpet-shaped pipe, and the pipe diameter of the smoke collecting port 20 gradually decreases in the direction away from the dust collecting hood 10. The smoke collecting port 20 serves to transitionally connect the dust collecting hood 10 and the dust removal duct 30. The trumpet-shaped pipe is conducive to fully discharging the smoke absorbed by each smoke exhaust grid screen 11 into the dust removal duct 30.

[0026] In another embodiment, the dust removal device includes a dust collector 50 and the above-mentioned dust collecting device for the medium frequency furnace, and the dust collector 50 is connected to the dust removal duct 30. The dust removal device also includes a fan 60, and the fan 60 is connected to the dust collector 50. After the inhaled flue gas is dusted inside the dust collector 50, the clean gas is discharged to the outside through the fan 60 to ensure the normal operation of the dust removal device.

[0027] The working process of the dust removal equipment is as follows: after the dust hood 10 is installed to the furnace mouth of the medium frequency furnace, the dust collector 50 and the fan 60 are started, the dust hood 10, the smoke collecting port 20 and the dust removal duct 30 generate negative pressure, and the smoke enters the smoke exhaust screen 11, is filtered by the dust collector 50, and is discharged by the fan 60.

[0028] The specific implementation methods of the present application are described in detail above. Although some embodiments have been shown and described, those skilled in the art should understand that these embodiments can be modified and improved without departing from the principles and spirit of the present application whose scope is defined by the claims and their equivalents. These modifications and improvements should also be within the scope of protection of the present application.

Claims

1. A dust collecting device for a medium frequency furnace, characterized in that: The dust collecting device comprises: A dust collecting hood, wherein the dust collecting hood is provided with a smoke exhaust screen, and the dust collecting hood is used to cover the furnace opening of the medium frequency furnace; A smoke collecting port, the smoke collecting port being connected to the dust collecting hood; A dust removal duct, one end of which is connected to the smoke collecting port, and the other end of which is connected to a dust collector.

2. The dust collecting device for a medium frequency furnace according to claim 1, characterized in that: The dust collecting hood is an annular dust collecting hood with a hollow interior.

3. The dust collecting device for a medium frequency furnace according to claim 2, characterized in that: The inner wall of the annular dust collecting hood is provided with the smoke exhaust grid screen.

4. The dust collecting device for a medium frequency furnace according to claim 3, characterized in that: There are multiple smoke exhaust grid screens, and the multiple smoke exhaust grid screens are distributed at intervals along the inner wall of the annular dust collecting hood.

5. The dust collecting device for a medium frequency furnace according to claim 2, characterized in that: The smoke collecting port is connected to the outer wall of the annular dust collecting hood.

6. The dust collecting device for a medium frequency furnace according to claim 5, characterized in that: The smoke collecting port is a trumpet-shaped pipe, and the pipe diameter of the smoke collecting port gradually decreases in a direction away from the dust collecting hood.

7. A dust removal device, characterized in that: The dust removal equipment includes a dust collector and a dust collecting device for a medium frequency furnace according to any one of claims 1 to 6, and the dust collector is connected to a dust removal pipeline.

8. The dust removal device according to claim 7, characterized in that: The dust removal equipment also includes a fan, which is connected to the dust collector.

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