Medium-frequency induction melting furnace with dust removal structure

Abstract

The utility model relates to the technical field of environmental protection equipment, and discloses a medium-frequency induction melting furnace with a dust removal structure, which comprises a furnace body, one side of the furnace body is communicated with the interior of the furnace body and is fixedly provided with a discharge pipe for discharging flue gas, and the end part of the discharge pipe far away from the furnace body joint is provided with a dust removal box; a filtering mechanism is installed on the inner wall, close to the end of the dust removal box, of the discharging pipe and comprises a filtering steel net, a driving shaft rotationally arranged at the axis of the filtering steel net, a dust scraping piece arranged on the driving shaft, an anti-blocking assembly and a driving piece for driving the driving shaft to rotate. The driving shaft drives the anti-blocking assembly to eject large-particle sundries blocking holes of the filter steel mesh out in the rotating process, and meanwhile, the dust scraping piece scrapes the ejected large-particle sundries away from the meshes of the filter steel mesh. The effect of improving the continuous dust removal stability of the dust removal device is achieved.

Description

Technical Field

[0001] This application relates to the technical field of environmental protection equipment, and particularly relates to an intermediate frequency induction melting furnace with a dust removal structure. Background Art

[0002] An intermediate frequency induction melting furnace is a device that uses the principle of intermediate frequency induction heating for metal melting and temperature raising, and has the advantages of high power, fast heating speed, and low energy consumption. Its working principle is to generate an alternating electromagnetic field through an intermediate frequency power supply, so that the metal material placed in the furnace generates an induced current, thereby realizing heating and melting. Its power range is usually between 20 - 2500 KW, and the frequency is between 200 - 2500 Hz, which can quickly raise the temperature and maintain a stable melting temperature. It is widely used in the melting of precious metals, non-ferrous metals, stainless steel, aluminum alloy and other materials, and is an ideal device commonly used in fields such as scientific research, laboratories, jewelry processing, and precision casting processing.

[0003] In the prior art, during the normal operation of an intermediate frequency induction melting furnace, if there is oil or moisture on the surface of the melted metal material, the evaporation and decomposition of the oil and moisture during the heating process will generate smoke, which will then form soot. And factors such as temperature control and heating speed during the melting process will also cause the generation of soot. Among them, too fast a heating speed may cause rapid oxidation of the material surface, thereby generating soot.

[0004] Chinese Patent with Publication No. CN217236432U discloses an intermediate frequency induction melting furnace with an efficient dust removal device, including a furnace body. A sealing cover is provided at the upper port of the furnace body. The upper end of the furnace body is fixedly connected to a first exhaust pipe, and the other end of the first exhaust pipe is connected to the top of a dust removal box fixedly connected to the middle of the furnace body. A cover plate is provided on the front side of the dust removal box. The bottom end of the dust removal box is fixedly connected to a second exhaust pipe. A fan is provided inside the second exhaust pipe, and an exhaust port is provided at the lower end of the second exhaust pipe.

[0005] In the triple filtration of the flue gas discharged from the intermediate frequency induction melting furnace by the above dust removal device, the mesh holes of the wire mesh are easily blocked by large particle debris due to long-term filtration of large particle debris, and a large amount of large particle debris accumulates inside the first exhaust pipe, making it difficult to be dredged and cleaned, and greatly interfering with the ventilation effect of the first exhaust pipe, thereby affecting the dust removal effect of the dust removal device. Utility Model Content

[0006] In order to improve the stability of continuous dust removal of the dust removal device, this application provides an intermediate frequency induction melting furnace with a dust removal structure.

[0007] The intermediate frequency induction melting furnace with a dust removal structure provided by this application adopts the following technical solutions:

[0008] The filter mechanism comprises a filter screen which is coaxially and detachably arranged on the inner wall of the filter screen for filtering large particles of debris, a driving shaft which is rotatably arranged at the axis of the filter screen parallel to the axial direction of the filter screen, a dust scraper which is arranged on the driving shaft and is located on the side of the filter screen away from the dust collecting box, an anti-blocking component which is arranged on the driving shaft and is located on the side of the filter screen away from the dust collecting box, and a driving component which drives the driving shaft to rotate. When air accompanied by smoke and ash passes through the filter screen and enters the dust collecting box, the driving component drives the driving shaft to rotate. During the rotation of the driving shaft, the anti-blocking component drives the anti-blocking component to push out large particles of debris blocking the pores of the filter screen. At the same time, the dust scraper scrapes the pushed out large particles of debris away from the mesh of the filter screen.

[0009] By adopting the above technical solution, when air accompanied by smoke enters the dust removal box through the filter steel mesh, the driving member drives the driving shaft to rotate. During the rotation, the driving shaft drives the anti-blocking component to push out the large particles of debris blocking the pores of the filter steel mesh. At the same time, the scraping member scrapes the pushed out large particles of debris away from the mesh of the filter steel mesh, thereby effectively avoiding the blockage of the filter steel mesh by large particles of debris, ensuring the smooth flow of the discharge pipe, and then ensuring the dust removal effect, while improving the operating stability of the smelting furnace.

[0010] Optionally, the scraper is a scraper plate fixedly mounted on the drive shaft, the length of the scraper plate matches the radius of the filter steel mesh, and when the drive shaft rotates one circle, the rotation path of the scraper plate covers the entire mesh surface of the filter steel mesh.

[0011] By adopting the above technical solution, the large particles of debris on the surface of the filter steel mesh are fully scraped off by the scraper plate, thereby improving the cleaning effect of the filter steel mesh.

[0012] Optionally, the anti-blocking component includes an anti-blocking frame arranged on the inner wall of the discharge pipe parallel to the filter steel mesh, a plurality of anti-blocking rods sliding through the anti-blocking frame toward the side of the filter steel mesh, and a push rod fixedly sleeved on the driving shaft and parallel to the anti-blocking frame, the anti-blocking rods corresponding one-to-one to the mesh holes of the filter steel mesh, and an end ball is arranged on the rod end of each anti-blocking rod located on the side of the anti-blocking frame away from the filter steel mesh, when the driving shaft rotates one circle, the push rod continuously contacts the end ball during the rotation process, and pushes the anti-blocking rod to eject large particles of debris from the mesh holes of the filter steel mesh.

[0013] By adopting the above technical solution, the driving shaft is used to drive the push rod to rotate, and the push rod is made to contact the end ball during the rotation, thereby pushing the anti-blocking rod to slide toward the filter steel mesh relative to the anti-blocking frame, thereby pushing out large particles of debris in the mesh of the filter steel mesh, thereby achieving the cleaning of the filter steel mesh, ensuring the smoothness of the filter steel mesh, and further improving the dust removal effect of the smelting furnace.

[0014] Optionally, the driving member is an impeller, and the impeller is fixedly sleeved on the shaft body of the driving shaft close to its own end on the side facing the dust removal box, and the blades of the impeller are arranged toward the filter steel mesh.

[0015] By adopting the above technical solution, the setting of the impeller makes it easy to utilize the smoke in the smelting furnace to automatically drive the drive shaft to rotate, thereby realizing automatic dust removal and anti-blocking, thereby achieving efficient energy-saving effect of the dust removal device.

[0016] Optionally, a brush is provided on the side wall of the scraper plate facing the filter steel mesh, and the brush is made of a high-temperature resistant rubber material.

[0017] By adopting the above technical solution, since the brush can contact the inner wall of the hole of the filter steel mesh during the scraping process, the cleaning effect of the scraper plate on the filter steel mesh is further enhanced, and the permeability of the filter steel mesh is improved.

[0018] Optionally, each of the anti-blocking rods is sleeved with a spring, and each of the springs abuts between the filter steel mesh and the side walls opposite to the anti-blocking frame.

[0019] By adopting the above technical solution, a spring is sleeved on each anti-blocking rod, so that the anti-blocking rod has better resetting performance, ensuring that it can be quickly reset after each particle is ejected, so that the dust removal device can continue to perform anti-blocking operations.

[0020] Optionally, a limiting groove is provided on the inner wall of the discharge pipe parallel to its own axis, and two groups of limiting grooves are symmetrically arranged along the axial axis of the discharge pipe, and a first limiting block and a second limiting block are slidably arranged in each of the limiting grooves, the first limiting block is arranged on the filter steel net, and the second limiting block is arranged on the anti-blocking frame.

[0021] By adopting the above technical solution, the sliding cooperation between the first limit block and the second limit block and the limit groove can improve the stability of the filter steel mesh and the anti-blocking frame during operation and reduce the possibility of displacement or deformation due to external vibration or impact.

[0022] Optionally, a support rod is connected between the first limit block and the second limit block in each limit groove, and the length direction of the support rod is parallel to the axial direction of the filter steel mesh.

[0023] By adopting the above technical solution, the setting of the support rod can further enhance the structural strength of the filtering mechanism and the entire discharge pipe.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. When the air accompanied by soot passes through the filter steel mesh and enters the dust removal box, the driving member drives the driving shaft to rotate. During the rotation of the driving shaft, the anti-blocking assembly is driven to push out the large-particle debris in the pores blocking the filter steel mesh. At the same time, the dust scraping member scrapes the large-particle debris pushed out away from the mesh holes of the filter steel mesh, thus effectively avoiding the blockage of the filter steel mesh by large-particle debris, ensuring the smoothness of the discharge pipe, and further ensuring the dust removal effect. At the same time, the operating stability of the melting furnace is improved;

[0026] 2. The dust scraping plate is used to fully scrape the large-particle debris on the surface of the filter steel mesh, improving the cleaning effect on the filter steel mesh;

[0027] 3. The driving shaft drives the push rod to rotate, and during the rotation of the push rod, the end ball is abutted, and then the anti-blocking rod is pushed to slide relative to the anti-blocking frame towards the filter steel mesh side, so as to push out the large-particle debris in the mesh holes of the filter steel mesh, realizing the cleaning of the filter steel mesh, ensuring the smoothness of the filter steel mesh, and further improving the dust removal effect of the melting furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0029] Figure 2 is the sectional view showing the positional relationship among the discharge pipe, the filtering mechanism and the dust removal box in the embodiment of the present application.

[0030] Figure 3 is the structural schematic diagram showing the filtering mechanism in the embodiment of the present application.

[0031] DESCRIPTION OF THE REFERENCE NUMERALS

[0032] 1. Furnace body; 2. Discharge pipe; 21. Limit groove; 3. Dust removal box; 4. Filtering mechanism; 41. Filter steel mesh; 411. First limit block; 42. Driving shaft; 43. Dust scraping member; 431. Dust scraping plate; 4311. Brush; 44. Anti-blocking assembly; 441. Anti-blocking frame; 4411. Second limit block; 442. Anti-blocking rod; 4421. End ball; 443. Push rod; 45. Driving member; 451. Impeller; 5. Fan; 6. Discharge port; 7. Support rod; 8. Sealing ring; 9. Spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following is a further detailed description of the present application in conjunction with the attached Figures 1 - 3 drawings.

[0034] An embodiment of the present application discloses an intermediate frequency induction melting furnace with a dust removal structure.

[0035] Referring to Figure 1 and Figure 2 , an intermediate frequency induction melting furnace with a dust removal structure includes a furnace body 1. One side of the furnace body 1 is connected to the inside of the furnace body 1, and a discharge pipe 2 for discharging flue gas is fixedly installed. The end of the discharge pipe 2 away from the connection with the furnace body 1 is provided with a dust removal box 3. A filtering mechanism 4 is installed on the inner wall of the discharge pipe 2 near the end of the dust removal box 3. One side of the dust removal box 3 is connected and installed with a fan 5 through a pipe, and a discharge port 6 is provided on the side of the pipe where the air outlet of the fan 5 is located, so that the flue gas after dust removal treatment can be discharged into the external environment in real time.

[0036] Referring to Figure 1 and Figure 2 , by starting the fan 5 to generate suction, the flue gas generated inside the furnace body 1 is transported and introduced into the discharge pipe 2 in real time, and then enters the dust removal box 3 along with the discharge pipe 2. During the process of the flue gas entering the dust removal box 3 from the discharge pipe 2, it is dredged and filtered by the filtering mechanism 4, thereby realizing the conduction and transportation of the overall air flow.

[0037] Referring to Figure 2 and Figure 3 , the key part of the embodiment of the present application lies in the unique design of the filtering mechanism 4. The filtering mechanism 4 includes a filtering steel mesh 41, a driving shaft 42, a dust scraping member 43, an anti-blocking component 44, and a driving member 45. When the soot-laden air flows through the filtering steel mesh 41, the driving member 45 will drive the driving shaft 42 to rotate, thereby driving the dust scraping member 43 and the anti-blocking component 44 to work, and automatically cleaning the large-particle debris blocked on the filtering steel mesh 41.

[0038] Referring to Figure 2 , the filtering steel mesh 41 is coaxially installed on the inner wall of the discharge pipe 2, and is responsible for initially filtering the large-particle debris in the flowing flue gas. Its mesh design is reasonable, which can effectively intercept debris without affecting the normal flow of flue gas.

[0039] Referring to Figure 2 , the driving shaft 42 is rotatably arranged at the axial center position of the filtering steel mesh 41 parallel to the axis direction of the filtering steel mesh 41. In this embodiment, an impeller 451 is used as the driving member 45. The impeller 451 is fixedly sleeved on the shaft body of the driving shaft 42 near its own end on the side facing the dust removal box 3, and the blades of the impeller 451 are arranged facing the filtering steel mesh 41.

[0040] Referring to Figure 2, in this embodiment, the dust scraping member 43 is a dust scraping plate 431. The length of the dust scraping plate 431 matches the radius of the filter steel mesh 41, and it is fixedly sleeved on the shaft body of the driving shaft 42 on the side away from the dust removal box 3. And a brush 4311 made of high-temperature resistant rubber material is fixedly arranged on the side wall of the dust scraping plate 431 facing the filter steel mesh 41, and the brush 4311 is in contact with the side wall of the filter steel mesh 41.

[0041] Refer to Figure 2 , when the driving shaft 42 rotates driven by the impeller 451, the dust scraping plate 431 will also rotate accordingly, and its rotation path can completely cover the entire mesh surface of the filter steel mesh 41 when the driving shaft 42 rotates one week. In this way, the large particle debris blocked in the mesh holes of the filter steel mesh 41 can be effectively scraped off by the brush 4311, ensuring the permeability of the filter steel mesh 41.

[0042] Refer to Figure 2 and Figure 3 , the anti-blocking component 44 includes an anti-blocking frame 441, an anti-blocking rod 442 and a push rod 443. The anti-blocking frame 441 is installed on the inner side wall of the discharge pipe 2 parallel to the filter steel mesh 41. A limiting groove 21 is axially opened on the inner wall of the discharge pipe 2 parallel to itself, and two groups of limiting grooves 21 are axially symmetrically arranged along the discharge pipe 2. A first limiting block 411 and a second limiting block 4411 are slidably fitted in each limiting groove 21. Each first limiting block 411 is fixedly arranged on the side wall of the filter steel mesh 41, and each second limiting block 4411 is fixedly arranged on the side wall of the anti-blocking frame 441. And a support rod 7 is installed and abutted between the first limiting block 411 and the second limiting block 4411 in each limiting groove 21. The length direction of the support rod 7 is parallel to the axis of the filter steel mesh 41. And a plugging ring 8 for plugging and supporting the second limiting block 4411 is bolted to the inner top wall of the dust removal box 3, and the plugging rod part on the plugging ring 8 is inserted and matched with the limiting groove 21

[0043] Refer to Figure 2 and Figure 3 , one anti-blocking rod 442 is provided corresponding to each mesh hole of the filter steel mesh 41, and they are all slidably inserted through the anti-blocking frame 441 towards the filter steel mesh 41. A end ball 4421 is integrally formed on the rod end of each anti-blocking rod 442 on the side of the anti-blocking frame 441 away from the filter steel mesh 41. The push rod 443 is located on the outdoor side of the anti-blocking frame 441 facing the dust removal box 3. Its length matches the radius of the anti-blocking frame 441, and it is parallel to the anti-blocking frame 441. The end of the push rod 443 is fixedly sleeved on the shaft body of the driving shaft 42. When the driving shaft 42 rotates one week, the push rod 443 continuously contacts the end ball 4421 during the rotation process and pushes the anti-blocking rod 442 to eject large particle debris from the mesh holes of the filter steel mesh 41.

[0044] Refer to Figure 3, in order to enable the anti-blocking rod 442 to quickly reset after pushing out the blockage, a spring 9 is sleeved on each anti-blocking rod 442, and each spring 9 abuts between the side walls of the filter steel mesh 41 and the anti-blocking frame 441 that face each other.

[0045] The implementation principle of an intermediate frequency induction melting furnace with a dust removal structure according to an embodiment of the present application is as follows: during the operation of the melting furnace, the generated flue gas flows through the discharge pipe 2 towards the dust removal box 3. When the flue gas passes through the filter steel mesh 41, large particle debris is intercepted. When the impeller 451 senses sufficient airflow impact, it starts to rotate, and this rotation action is transmitted to the dust scraping plate 431 and the anti-blocking rod 442 through the drive shaft 42. The anti-blocking rod 442 reciprocates under the action of the push rod 443 to push out the debris stuck in the mesh holes; at the same time, the dust scraping plate 431 rotates accordingly to scrape off the large particle debris attached to the surface of the filter steel mesh 41 to ensure that the pores of the filter steel mesh 41 are unblocked.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A medium frequency induction melting furnace with a dust removal structure, comprising a furnace body (1), a discharge pipe (2) for discharging flue gas fixedly installed on one side of the furnace body (1) in communication with the interior of the furnace body (1), and a dust removal box (3) is arranged at the end of the discharge pipe (2) away from the connection with the furnace body (1), characterized in that: A filter mechanism (4) is installed on the inner wall of the discharge pipe (2) near the end of the dust removal box (3), and the filter mechanism (4) comprises a filter steel mesh (41) coaxially and detachably arranged on the inner wall of the discharge pipe (2) for filtering large particles of impurities, a drive shaft (42) rotatably arranged at the axis of the filter steel mesh (41) parallel to the axis of the filter steel mesh (41), a dust scraper (43) arranged on the drive shaft (42) at the side of the filter steel mesh (41) away from the dust removal box (3), and a dust scraper (43) arranged on the drive shaft (42) at the side of the filter steel mesh (41) away from the dust removal box (3). (41) an anti-blocking component (44) on the side away from the scraper (43) and a driving component (45) for driving the driving shaft (42) to rotate. When air accompanied by soot passes through the filter steel mesh and enters the dust removal box (3), the driving component (45) drives the driving shaft (42) to rotate. During the rotation process, the driving shaft (42) drives the anti-blocking component (44) to push out large particles of debris blocking the pores of the filter steel mesh (41). At the same time, the scraper (43) scrapes the pushed out large particles of debris away from the mesh of the filter steel mesh (41).

2. The medium frequency induction melting furnace with a dust removal structure according to claim 1, characterized in that: The scraper (43) is a scraper plate (431) fixedly sleeved on the drive shaft (42); the length of the scraper plate (431) matches the radius of the filter steel mesh (41); when the drive shaft (42) rotates one circle, the rotation path of the scraper plate (431) covers the entire mesh surface of the filter steel mesh (41).

3. The medium frequency induction melting furnace with a dust removal structure according to claim 1, characterized in that: The anti-blocking assembly (44) comprises an anti-blocking frame (441) arranged on the inner side wall of the discharge pipe (2) parallel to the filter steel mesh (41), a plurality of anti-blocking rods (442) slidingly arranged on the anti-blocking frame (441) toward one side of the filter steel mesh (41), and a push rod (443) fixedly sleeved on the drive shaft (42) and parallel to the anti-blocking frame (441), wherein the anti-blocking rods (442) correspond to the mesh holes of the filter steel mesh (41) one by one, and an end ball (4421) is arranged on the rod end of each anti-blocking rod (442) located on the side of the anti-blocking frame (441) away from the filter steel mesh (41), and when the drive shaft (42) rotates one circle, the push rod (443) continuously contacts the end ball (4421) during the rotation process, and pushes the anti-blocking rod (442) to eject large particles of debris from the mesh holes of the filter steel mesh (41).

4. The medium frequency induction melting furnace with a dust removal structure according to claim 1, characterized in that: The driving member (45) is an impeller (451), which is fixedly sleeved on the shaft of the driving shaft (42) close to its own end on the side facing the dust removal box (3), and the blades of the impeller (451) are arranged toward the filter steel mesh (41).

5. The medium frequency induction melting furnace with a dust removal structure according to claim 2, characterized in that: A brush (4311) is arranged on the side wall of the scraper plate (431) facing the filter steel mesh (41), and the brush (4311) is made of a high-temperature resistant rubber material.

6. The medium frequency induction melting furnace with a dust removal structure according to claim 3, characterized in that: A spring (9) is sleeved on each of the anti-blocking rods (442), and each of the springs (9) abuts between the filter steel net (41) and the opposite side walls of the anti-blocking frame (441).

7. The medium frequency induction melting furnace with a dust removal structure according to claim 1, characterized in that: A limiting groove (21) is provided on the inner wall of the discharge pipe (2) parallel to the axial direction thereof, and two groups of the limiting grooves (21) are symmetrically arranged along the axial direction of the discharge pipe (2), and a first limiting block (411) and a second limiting block (4411) are slidably arranged in each of the limiting grooves (21), wherein the first limiting block (411) is arranged on the filter steel mesh (41), and the second limiting block (4411) is arranged on the anti-blocking frame (441).

8. The medium frequency induction melting furnace with a dust removal structure according to claim 7, characterized in that: A support rod (7) is connected between the first limit block (411) and the second limit block (4411) in each limit groove (21), and the length direction of the support rod (7) is parallel to the axial direction of the filter steel mesh (41).

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