A folding cover plate for medium frequency furnace

Abstract

The utility model relates to the technical field of medium frequency furnaces, and discloses a folding cover plate of a medium frequency furnace, comprising a furnace wall, a thick furnace bottom is fixedly installed at the bottom of the furnace wall, a support seat is installed in the inner cavity of the furnace wall, a connecting frame is fixedly connected to the top of the support seat, an induction furnace coil is fixedly connected to the inner wall of the connecting frame, and the inner wall of the induction furnace coil is fixedly connected to the fixing frame. Through the mutual cooperation of the rear cover plate and the front cover plate on the device, a connecting rod is provided in the inner cavity of the rear cover plate, so that the rear cover plate on the device is movably connected to the front cover plate by the connecting rod, and when the staff uses the lifting hand rod to lift the height of the front cover plate, the front cover plate and the rear cover plate can be manually controlled to fold with the connecting rod as the center point, so that the front cover plate and the rear cover plate on the device can be folded and stored, and then when the rear cover plate and the front cover plate are placed in a plane, the splashing molten metal is blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of medium frequency furnaces, in particular to a folding cover plate of a medium frequency furnace. Background Art

[0002] A medium frequency furnace is a power supply device that converts industrial frequency 50HZ alternating current into medium frequency. It rectifies three-phase industrial frequency alternating current into direct current, and then converts direct current into adjustable medium frequency current to supply medium frequency alternating current flowing through capacitors and induction coils, generating high-density magnetic lines in the induction coil, cutting the metal material contained in the induction coil, and generating large eddy currents in the metal material.

[0003] The existing folding cover of the medium frequency furnace can refer to the Chinese utility model patent with the authorization announcement number CN218238380U, which discloses a medium frequency furnace cover, "including a furnace cover, refractory materials, a hanger and a vent pipe. The refractory materials are knotted in the furnace cover, and the hanger is suspended by fasteners to connect the refractory materials and the furnace cover as a whole. The vent pipe includes an air inlet and an air outlet pipe, which can be used to introduce gas into the furnace. The cover body is designed with temperature measurement and alloying operation holes. The air inlet and the air outlet pipe are connected by a ring pipe fixed on the hanger, and the air outlet pipes are evenly distributed on the ring pipe. Refractory cotton is hung at the bottom of the cover body. In order to facilitate the operation of the furnace cover, a lifting mechanism and a rotating mechanism are also designed. The lifting mechanism adopts the principle of lever to realize the lifting and lowering of the cover body, and the rotating mechanism facilitates the unscrewing or covering of the cover body at the furnace mouth."

[0004] When the above device is in use, the existing device uses air to prevent oxidation of molten steel in the furnace by isolating air from entering the medium frequency furnace. At the same time, it avoids heat dissipation of molten steel and saves energy. However, when smelting in the furnace body, a large amount of hot gas generated in the furnace body cannot be discharged, and in a high temperature environment, it will continue to exert expansion force on the furnace body. Therefore, in this case, once the furnace body is opened, the molten metal will expand and splash. In addition, the existing furnace cover has a complex structure, high cost, and is inconvenient to use. Therefore, a folding cover plate for a medium frequency furnace that solves the above problems is needed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a folding cover plate for a medium frequency furnace, which has the advantages of strong practicality, folding storage, exhaust, etc., and solves the problems raised by the above-mentioned background technology.

[0006] The utility model provides the following technical solution: a folding cover plate of a medium frequency furnace comprises a furnace wall, a thick furnace bottom is fixedly installed at the bottom of the furnace wall, a support seat is installed in the inner cavity of the furnace wall, a connecting frame is fixedly connected to the top of the support seat, an induction furnace coil is fixedly connected to the inner wall of the connecting frame, a fixing frame is fixedly connected to the inner wall of the induction furnace coil, a smelting inner furnace is connected to the inner wall of the fixing frame, an inner liner layer is arranged on the top of the fixing frame, a plane layer is fixedly installed on the top of the furnace wall, a U-shaped groove is connected to the outer wall of the plane layer, a connecting device is fixedly connected to the top of the plane layer, a rear cover plate is movably connected to the front cover plate, a thickened refractory layer is fixedly installed on the outer wall of the front cover plate, an air hole is opened in the inner cavity of the thickened refractory layer, a lifting handle is arranged on the outer wall of the front cover plate, and a fixing handle is movably connected to an end of the front cover plate away from the rear cover plate.

[0007] As a preferred technical solution of the utility model, the inner liner layer is arranged in the inner cavity of the furnace wall, and the inner wall of the inner liner layer is adapted to the outer wall of the smelting inner furnace in size.

[0008] As a preferred technical solution of the utility model, the opening of the smelting inner furnace extends to the outer wall of the planar layer, and the opening of the smelting inner furnace is connected to the U-shaped groove.

[0009] As a preferred technical solution of the utility model, a connecting rod is arranged in the inner cavity of the rear cover plate, and two ends of the connecting rod are movably sleeved with the front cover plate.

[0010] As a preferred technical solution of the utility model, the number of the air holes is several, and the several air holes are arranged in the front cover plate and the inner wall of the thickened fire-resistant layer.

[0011] As a preferred technical solution of the utility model, a dispenser is fixedly installed on the outer wall of the plane layer, and the inner wall of the dispenser is matched in size with the outer wall of the fixed handle.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The folding cover of the medium frequency furnace is used in coordination with the rear cover and the front cover on the device, so that a connecting rod is provided in the inner cavity of the rear cover, so that the rear cover on the device is movably connected with the front cover by the connecting rod, and when the staff uses the lifting handle to lift the height of the front cover, the front cover and the rear cover can be manually controlled to fold with the connecting rod as the center point, so that the front cover and the rear cover on the device can be folded and stored, and then the splashing molten metal is blocked when the rear cover and the front cover are placed flat.

[0014] 2. The folding cover of the medium frequency furnace uses the front cover, the rear cover and the air holes on the device in coordination with each other, so that the air holes on the device are evenly arranged in the inner walls of the front cover and the rear cover, and the "Z"-shaped design of the air holes is used to enable the metal material being melted in the inner cavity of the device to discharge gas normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the left side cross-sectional structure of the utility model;

[0018] Figure 4 For this utility model Figure 3 A schematic diagram of the structure enlargement in the middle;

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the utility model when viewed from above.

[0020] In the figure: 1. furnace wall; 2. thick furnace bottom; 3. support base; 4. connecting frame; 5. induction furnace coil; 6. fixing frame; 7. smelting inner furnace; 8. liner layer; 9. plane layer; 10. U-shaped groove; 11. connecting device; 12. rear cover plate; 13. front cover plate; 14. thickened refractory layer; 15. air hole; 16. lifting handle; 17. fixing handle. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5A folding cover plate of a medium frequency furnace comprises a furnace wall 1, a thick furnace bottom 2 is fixedly installed at the bottom of the furnace wall 1, a support seat 3 is installed in the inner cavity of the furnace wall 1, a connecting frame 4 is fixedly connected to the top of the support seat 3, an induction furnace coil 5 is fixedly connected to the inner wall of the connecting frame 4, a fixing frame 6 is fixedly connected to the inner wall of the induction furnace coil 5, a smelting inner furnace 7 is connected to the inner wall of the fixing frame 6, an inner liner layer 8 is arranged on the top of the fixing frame 6, a plane layer 9 is fixedly installed on the top of the furnace wall 1, a U-shaped groove 10 is connected to the outer wall of the plane layer 9, a connecting device 11 is fixedly connected to the top of the plane layer 9, a rear cover plate 12 is movably connected to the outer wall of the connecting device 11, a front cover plate 13 is movably connected to the rear cover plate 12, and the front cover plate 13 is A thickened refractory layer 14 is fixedly installed on the outer wall, and an air hole 15 is opened in the inner cavity of the thickened refractory layer 14. A lifting handle 16 is provided on the outer wall of the front cover plate 13, and a fixed handle 17 is movably connected to the end of the front cover plate 13 away from the rear cover plate 12. Through the mutual cooperation of the connecting frame 4, the induction furnace coil 5, the fixing frame 6 and the smelting inner furnace 7 on the device, the connecting frame 4 on the device is connected to the induction furnace coil 5 by connecting nails, and the fixing frame 6 is connected by the inner wall of the induction furnace coil 5, and the fixing frame 6 is used to fix the outer wall of the smelting inner furnace 7, so that the induction furnace coil 5 on the device assists the smelting inner furnace 7 in the inner cavity, thereby keeping the furnace body dry, discharging water vapor and ensuring the furnace body efficiency.

[0023] In a preferred embodiment, the liner layer 8 is arranged in the inner cavity of the furnace wall 1, and the inner wall of the liner layer 8 is adapted to the size of the outer wall of the smelting inner furnace 7. The liner layer 8 on the device is arranged in the inner cavity of the furnace wall 1, so that the liner layer 8 on the device is sleeved on the outer wall of the smelting inner furnace 7 in the inner cavity of the furnace wall 1, and the upper half of the smelting inner furnace 7 is fixed by the liner layer 8, so that when the device is tilted, the smelting inner furnace 7 on the device will not shake in the inner cavity of the furnace wall 1.

[0024] In a preferred embodiment, the opening of the smelting furnace 7 extends to the outer wall of the planar layer 9, and the opening of the smelting furnace 7 is connected to the U-shaped groove 10. The opening of the smelting furnace 7 on the device extends to the outer wall of the planar layer 9, so that after the smelting work is carried out in the inner cavity of the smelting furnace 7 on the device, the staff will use a rotating device to tilt the furnace body, and when tilting, the metal material melted in the inner cavity of the smelting furnace 7 will flow along the inner wall of the smelting furnace 7 to the inner wall of the U-shaped groove 10, so that the molten liquid inside the furnace body is discharged from the device from the U-shaped groove 10.

[0025] In a preferred embodiment, a connecting rod is provided in the inner cavity of the rear cover 12, and the two ends of the connecting rod are movably connected to the front cover 13. By providing a connecting rod in the inner cavity of the rear cover 12 on the device, the rear cover 12 on the device is movably connected to the front cover 13 by the connecting rod, and when the staff uses the lifting handle 16 to lift the height of the front cover 13, the front cover 13 and the rear cover 12 can be manually controlled to fold with the connecting rod as the center point, so that the front cover 13 and the rear cover 12 on the device can be folded and stored.

[0026] In a preferred embodiment, the number of the air holes 15 is several, and the several air holes 15 are arranged in the front cover plate 13 and the inner wall of the thickened refractory layer 14. Through the several air holes 15 on the device, the air holes 15 on the device are evenly arranged in the front cover plate 13 and the inner wall of the thickened refractory layer 14, and the "Z"-shaped design of the air holes 15 is utilized, so that the metal material being melted in the inner cavity of the device can discharge gas normally, and at the same time, the splashing molten metal is blocked.

[0027] In a preferred embodiment, a dispenser is fixedly installed on the outer wall of the planar layer 9, and the inner wall of the dispenser is adapted to the outer wall of the fixed handle 17. The dispenser is fixedly installed on the outer wall of the planar layer 9 on the device, so that the planar layer 9 on the device uses the dispenser to place the fixed handle 17 therein, and when placing it, the middle section of the fixed handle 17 is used to clamp the outer wall of the front cover 13, so that the front cover 13 and the rear cover 12 on the device are fixed when placed flat.

[0028] The working principle is that the rear cover plate 12 and the front cover plate 13 on the device are used in coordination with each other, so that a connecting rod is set in the inner cavity of the rear cover plate 12, so that the rear cover plate 12 on the device is movably connected with the front cover plate 13 by the connecting rod, and when the staff uses the lifting handle 16 to lift the height of the front cover plate 13, the front cover plate 13 and the rear cover plate 12 can be manually controlled to fold with the connecting rod as the center point, so that the front cover plate 13 and the rear cover plate 12 on the device can be folded and stored, and then when the rear cover plate 12 and the front cover plate 13 are placed in a plane, the splashing molten metal is blocked, and then the front cover plate 13, the rear cover plate 12 and the air holes 15 on the device are used in coordination with each other, so that the multiple air holes 15 on the device are evenly arranged in the inner walls of the front cover plate 13 and the rear cover plate 12, and the "Z"-shaped design of the air holes 15 is used, so that the metal material being melted in the inner cavity of the device can discharge gas normally.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A folding cover plate for a medium frequency furnace, comprising a furnace wall (1), characterized in that: A thick furnace bottom (2) is fixedly installed at the bottom of the furnace wall (1), a support seat (3) is installed in the inner cavity of the furnace wall (1), a connecting frame (4) is fixedly connected to the top of the support seat (3), an induction furnace coil (5) is fixedly connected to the inner wall of the connecting frame (4), a fixing frame (6) is fixedly connected to the inner wall of the induction furnace coil (5), a smelting inner furnace (7) is connected to the inner wall of the fixing frame (6), an inner liner layer (8) is arranged on the top of the fixing frame (6), a plane layer (9) is fixedly installed on the top of the furnace wall (1), and the outer wall of the plane layer (9) is A U-shaped groove (10) is connected, the top of the plane layer (9) is fixedly connected to a connecting device (11), the outer wall of the connecting device (11) is movably connected to a rear cover plate (12), the rear cover plate (12) is movably connected to a front cover plate (13), the outer wall of the front cover plate (13) is fixedly installed with a thickened fire-resistant layer (14), the inner cavity of the thickened fire-resistant layer (14) is provided with air holes (15), the outer wall of the front cover plate (13) is provided with a lifting handle (16), and the end of the front cover plate (13) away from the rear cover plate (12) is movably connected to a fixed handle (17).

2. The folding cover plate of a medium frequency furnace according to claim 1, characterized in that: The inner liner layer (8) is arranged in the inner cavity of the furnace wall (1), and the inner wall of the inner liner layer (8) is adapted in size to the outer wall of the smelting inner furnace (7).

3. The folding cover plate of a medium frequency furnace according to claim 1, characterized in that: The opening of the smelting inner furnace (7) extends to the outer wall of the plane layer (9), and the opening of the smelting inner furnace (7) is connected to the U-shaped groove (10).

4. The folding cover plate of a medium frequency furnace according to claim 1, characterized in that: A connecting rod is arranged in the inner cavity of the rear cover plate (12), and the two ends of the connecting rod are movably sleeved with the front cover plate (13).

5. The folding cover plate of a medium frequency furnace according to claim 1, characterized in that: The number of the air holes (15) is several, and the several air holes (15) are arranged in an array in the front cover plate (13) and the inner wall of the thickened fire-resistant layer (14).

6. The folding cover plate of a medium frequency furnace according to claim 1, characterized in that: A dispenser is fixedly mounted on the outer wall of the plane layer (9), and the inner wall of the dispenser is matched in size to the outer wall of the fixed handle (17).

Images