Intermediate frequency furnace gland plate with heat protection and deformation prevention functions

Abstract

The intermediate frequency furnace gland plate with the heat protection and deformation prevention functions comprises an intermediate frequency furnace neck, a positioning column is fixedly installed on the outer surface of the intermediate frequency furnace neck, a thread clamping mechanism is arranged between a gland plate block and the intermediate frequency furnace neck, the gland plate block presses a sealing plate through the thread clamping mechanism, the sealing plate is tightly attached to the intermediate frequency furnace neck, and the intermediate frequency furnace neck is fixedly connected with the gland plate block. The sealing plate is prevented from thermal deformation. According to the intermediate frequency furnace gland plate with the heat protection and deformation prevention functions, a sealing plate is limited to the outer surface of an intermediate frequency furnace neck through a positioning column, then a pressing plate block is placed on the outer surface of the sealing plate, the pressing plate block is positioned through a material guide opening, a groove of a supporting rod is automatically aligned with a clasp, manual adjustment is not needed, then a screw cap is screwed on a screw rod, and the pressing plate block is fixed to the outer surface of the intermediate frequency furnace neck. The screw rod is clamped into the clasp and rotationally buckled into the supporting rod, then the nut is tightened, and the sealing plate is clamped through tightening between the plate pressing block and the intermediate frequency furnace neck, so that the situation that the sealing plate is difficult to take out due to deformation when heated is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of medium frequency furnace pressure cover plates, in particular to a medium frequency furnace pressure cover plate provided with heat protection and anti-deformation. Background Art

[0002] During the operation and smelting process of the medium frequency furnace, it is necessary to add phosphorus pig iron, graphite, slag remover, ferrophosphorus, ferrosilicon and other materials for high-temperature smelting to obtain qualified molten iron that meets the pouring conditions. However, during long-term smelting production, the furnace collar, lining, furnace wall and other parts of the smelting furnace will be subject to various losses such as high-temperature reaction, electromagnetic cutting, and impact of foreign objects, thereby reducing the service life of the medium frequency furnace. Thus, the gland plate was born, but because the gland plate is at the upper end of the medium frequency furnace, the heat of the medium frequency furnace will all flow to the gland plate, causing the gland plate to be easily deformed by heat, which makes it difficult to remove the gland plate for maintenance later. Utility Model Content

[0003] The utility model aims to provide a medium frequency furnace cover plate with heat protection and anti-deformation, so as to solve the problem in the above background technology that the heat of the medium frequency furnace flows to the cover plate, causing deformation and difficulty in removal and maintenance.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a medium frequency furnace pressure cover plate with heat protection and anti-deformation, comprising a medium frequency furnace neck, a positioning column is fixedly installed on the outer surface of the medium frequency furnace neck, and a sealing plate is installed through the outer surface of the positioning column, and the sealing plate is of an annular design, the side surface of the sealing plate is in contact with the outer surface of the medium frequency furnace neck, and the feeding port diameter of the medium frequency furnace neck is smaller than the feeding port diameter of the sealing plate, a pressure plate is inserted in the annular hole of the sealing plate, and the pressure plate and the medium frequency furnace neck are of concentric design, and a threaded locking mechanism is arranged between the pressure plate and the medium frequency furnace neck, and the threaded locking mechanism is used to press the sealing plate tightly, so that the sealing plate is tightly fitted with the medium frequency furnace neck to prevent the sealing plate from being deformed due to heat.

[0005] Preferably, the threaded locking mechanism includes: a support rod, which is evenly arranged on the side surface of the pressure plate, and a groove is provided at one end of the support rod away from the pressure plate, a hook is fixedly installed on the side surface of the intermediate frequency furnace neck, and a screw is installed inside the hook, and the screw is T-shaped, the screw passes through the groove of the support rod, and a nut is threadedly installed on the outer surface of the screw, and the side surface of the nut is in contact with the outer surface of the support rod.

[0006] By adopting the above technical solution, the hook and the screw can be engaged by tightening the screw and the nut, thereby shortening the distance between the pressure plate and the medium frequency furnace neck, so that the medium frequency furnace neck and the pressure plate clamp and squeeze the sealing plate, so that the sealing plate is always kept in a clamped state, and the sealing plate and the pressure plate can be completely removed by simply removing the screw and the nut, while preventing the sealing plate from deformation.

[0007] Preferably, a material guide port is fixedly mounted on the outer surface of one end of the sealing plate, and the material guide port is inclined, and a notch is opened on the side surface of one end of the pressing plate, and the notch of the pressing plate is engaged with the material guide port.

[0008] By adopting the above technical solution, when feeding, the material guide port can guide the dropped iron material to the center of the medium frequency furnace to reduce the impact of the iron material on the furnace lining. At the same time, the pressure plate can be positioned through the material guide port so that the groove of the support rod can be directly aligned with the hook without adjustment.

[0009] Preferably, the inner surface of the pressing plate is evenly provided with buckles, and the buckles are located at an end of the pressing plate away from the medium frequency furnace neck.

[0010] By adopting the above technical scheme, the buckle teeth can fix the scooping tool when scooping the slag, so that the tool does not contact or collide with the lining of the medium frequency furnace, thereby increasing the service life of the lining and making scooping the slag more convenient.

[0011] Preferably, a mounting hole is formed on a side surface of one end of the support rod away from the buckle, and the mounting holes penetrate through the outer surfaces of both sides of the support rod respectively.

[0012] By adopting the above technical solution, when it is necessary to remove the slag from the pressure plate, it is only necessary to remove the screw and the nut, then pass the screw through the mounting hole and tighten the nut, pass the sling through the screw, and then knock the pressure plate to break the iron slag connected to the sealing plate. The pressure plate can then be lifted up with the sling, effectively preventing the pressure plate from falling during the lifting process.

[0013] Preferably, a rotating mechanism is provided between the intermediate frequency furnace neck and the side surface of the pressure plate, and the temperature of the molten iron when the intermediate frequency furnace is melted is increased by the rotating mechanism, thereby improving the working efficiency of the intermediate frequency furnace.

[0014] By adopting the above technical solution, the temperature is concentrated inside the medium frequency furnace by covering the input port of the pressing plate, thereby improving the efficiency of melting iron materials.

[0015] Preferably, the rotating mechanism includes: a mounting block, which is fixedly mounted on the end of the medium frequency furnace neck away from the material guide port, and a top cover plate is rotatably mounted on the end of the mounting block close to the sealing plate, and an observation hole is provided through the center of the top cover plate, a hydraulic rod is rotatably mounted on the outer surface of the end of the mounting block away from the buckle, a slider is slidably mounted on the end of the top cover plate away from the sealing plate, and the outer surface of the slider is rotatably connected to the output end of the hydraulic rod, the side surface of the top cover plate is in contact with the side surface of the pressure plate, and the top cover plate does not block the material guide port, and an inclined bar is provided on the end of the top cover plate away from the observation hole, and the inclined bar is triangular in design, and the inclined bar does not fit the side surfaces of the sealing plate and the pressure plate.

[0016] By adopting the above technical solution, the slider can be pushed by the operation of the hydraulic rod to close the top cover plate, so that the top cover plate and the pressure plate fit together, so that the temperature can be retained inside the medium frequency furnace. The situation inside the furnace can be seen through the observation hole. When slag needs to be removed, it is only necessary to open the top cover plate, and the molten iron adhering to the top cover plate will be guided to fall along the inclined bar to prevent the molten iron from falling into the rotating place of the top cover plate and the mounting block and solidifying to cause jamming.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the intermediate frequency furnace pressure cover plate provided with heat protection and anti-deformation:

[0018] 1. Use the positioning column to limit the sealing plate to the outer surface of the intermediate frequency furnace neck, then place the pressure plate on the outer surface of the sealing plate, and position the pressure plate through the material guide port so that the groove of the support rod and the buckle hook can be aligned automatically without manual adjustment. Then screw the screw onto the nut, let the screw fit into the buckle hook and rotate it to buckle into the support rod, and then tighten the nut. Through the tightening between the pressure plate and the intermediate frequency furnace neck, clamp the sealing plate to prevent the sealing plate from being deformed when heated and difficult to remove;

[0019] 2. When it is necessary to clean the material guide port and the pressure plate, you only need to remove the nut from the screw rod to disengage the screw rod from the hook, then insert the screw rod into the installation hole and screw on the nut. You can use the sling to pass through the screw rod and connect the sling to lift the pressure plate. Then, insert the sling into the ring hole of the sealing plate to lift the sealing plate. You only need to remove the screw rod and nut to remove the sealing plate and the pressure plate, which is convenient for comprehensive cleaning of the slag on the outer surface of the sealing plate and the pressure plate.

[0020] 3. Through the operation of the hydraulic rod, the slider is pushed to slide on the outer surface of the top cover plate, and the top cover plate is pushed out to cover the outer surface of the pressure plate, so that the heat of the medium frequency furnace is preserved in the furnace, and the smelting efficiency of the iron material is improved. At the same time, the condition in the furnace can be observed through the observation hole. When slag needs to be removed, the top cover plate can be opened by simply contracting the hydraulic rod, and the molten iron attached to the inner surface of the top cover plate will slide down along the surface of the top cover plate and slide out through the guidance of the inclined bar, so that the molten iron will not enter the rotating part of the mounting block and the top cover plate, causing the molten iron to get stuck after solidification, effectively improving the use efficiency of the medium frequency furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the top view structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the top view of the sealing plate and the pressure plate structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the intermediate frequency furnace neck and the sealing plate of the utility model;

[0024] Figure 4This is a schematic diagram of the top cover plate and the oblique guard bar of the utility model when viewed from the bottom;

[0025] Figure 5 This is a schematic diagram of the three-dimensional structure of the intermediate frequency furnace neck and buckle hook of the utility model;

[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of the sealing plate and the material guide port of the utility model;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the pressure plate, support rod and mounting hole of the utility model.

[0028] In the figure: 1. Medium frequency furnace neck; 2. Positioning column; 3. Hook; 4. Screw; 5. Nut; 6. Closing plate; 7. Material guide port; 8. Pressure plate; 9. Tooth; 10. Support rod; 11. Mounting hole; 12. Mounting block; 13. Top cover plate; 14. Hydraulic rod; 15. Slider; 16. Observation hole; 17. Bevel bar. DETAILED DESCRIPTION

[0029] 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.

[0030] See also Figure 1-7 The utility model provides a technical solution: a medium frequency furnace pressure cover plate with heat protection and anti-deformation, including a medium frequency furnace neck 1, a positioning column 2 is fixedly installed on the outer surface of the medium frequency furnace neck 1, and a sealing plate 6 is installed through the outer surface of the positioning column 2, and the sealing plate 6 is designed as a circular ring, and the side surface of the sealing plate 6 fits the outer surface of the medium frequency furnace neck 1, and the feeding port diameter of the medium frequency furnace neck 1 is smaller than the feeding port diameter of the sealing plate 6, a pressure plate 8 is inserted in the annular hole of the sealing plate 6, and the pressure plate 8 and the medium frequency furnace neck 1 are concentrically designed, and a threaded clamping mechanism is provided between the pressure plate 8 and the medium frequency furnace neck 1, through The pressure plate 8 is pressed against the sealing plate 6 by a threaded locking mechanism, so that the sealing plate 6 is tightly fitted with the intermediate frequency furnace neck 1 to prevent the sealing plate 6 from being deformed due to heat. The threaded locking mechanism includes: a support rod 10, the support rod 10 is evenly arranged on the side surface of the pressure plate 8, and a groove is arranged at one end of the support rod 10 away from the pressure plate 8, a buckle hook 3 is fixedly installed on the side surface of the intermediate frequency furnace neck 1, and a screw rod 4 is installed inside the buckle hook 3, and the screw rod 4 is T-shaped, the screw rod 4 passes through the groove of the support rod 10, and a nut 5 is threadedly installed on the outer surface of the screw rod 4, and the side surface of the nut 5 is fitted with the outer surface of the support rod 10.

[0031] The sealing plate 6 can be positioned through the positioning column 2 so that the sealing plate 6 is accurately placed on the upper end of the intermediate frequency furnace neck 1. Then, the pressure plate 8 is positioned through the material guide port 7 so that the pressure plate 8 is accurately inserted into the sealing plate 6, so that the pressure plate 8 can be aligned with the hook 3 without adjusting the groove of the support rod 10. Then, the nut 5 is screwed onto the screw 4, and one end of the screw 4 is inserted into the hook 3 and rotated so that one end of the screw 4 is inserted into the groove of the adjustment support rod 10. Then, the nut 5 is tightened so that the pressure plate 8 is pulled toward the intermediate frequency furnace neck 1. The sealing plate 6 is fixed and clamped by the extrusion of the intermediate frequency furnace neck 1 and the pressure plate 8. The clamping force prevents the sealing plate 6 from being deformed by heat, so that the sealing plate 6 can be easily removed when cleaning and removing slag.

[0032] A material guide port 7 is fixedly mounted on the outer surface of one end of the sealing plate 6 , and the material guide port 7 is designed to be inclined. A notch is opened on the side surface of one end of the pressing plate 8 , and the notch of the pressing plate 8 is engaged with the material guide port 7 .

[0033] Through the slope of the material guide port 7 , the poured steel material will not impact the inner lining of the medium frequency furnace, and at the same time, the pressing plate 8 can be positioned through the material guide port 7 .

[0034] The inner surface of the pressing plate 8 is evenly provided with buckle teeth 9 , and the buckle teeth 9 are located at an end of the pressing plate 8 away from the intermediate frequency furnace neck 1 .

[0035] Through the gaps between the buckling teeth 9, the slag scooping tool can be inserted between the buckling teeth 9 to provide supporting force, and at the same time, the slag scooping tool can be prevented from contacting the inner lining of the furnace, thereby increasing the service life of the medium frequency furnace.

[0036] A mounting hole 11 is formed on a side surface of one end of the support rod 10 away from the buckle 9 , and the mounting holes 11 penetrate through the outer surfaces of both sides of the support rod 10 .

[0037] The screw rod 4 can be inserted into the mounting hole 11 and the nut 5 can be screwed on. Then, the sling can be passed through the screw rod 4 to stably lift the pressure plate 8.

[0038] A rotating mechanism is arranged between the medium frequency furnace neck 1 and the side surface of the pressure plate 8. The rotating mechanism is used to increase the temperature of the medium frequency furnace when melting molten iron, thereby improving the working efficiency of the medium frequency furnace. The rotating mechanism includes: a mounting block 12, the mounting block 12 is fixedly mounted on the end of the medium frequency furnace neck 1 away from the material guide port 7, and a top cover plate 13 is rotatably mounted on the end of the mounting block 12 close to the sealing plate 6, and an observation hole 16 is penetrated through the center position of the top cover plate 13, a hydraulic rod 14 is rotatably mounted on the outer surface of the end of the mounting block 12 away from the buckle tooth 9, a slider 15 is slidably mounted on the end of the top cover plate 13 away from the sealing plate 6, and the outer surface of the slider 15 is rotatably connected to the output end of the hydraulic rod 14, the side surface of the top cover plate 13 is in contact with the side surface of the pressure plate 8, and the top cover plate 13 does not block the material guide port 7, and an inclined bar 17 is arranged on the end of the top cover plate 13 away from the observation hole 16, and the inclined bar 17 is designed in a triangle, and the inclined bar 17 does not fit the side surfaces of the sealing plate 6 and the pressure plate 8.

[0039] When the hydraulic rod 14 is working, it will push the slider 15 to slide on the outer surface of the top cover plate 13, so that the top cover plate 13 is pushed out and rotated together, so that the top cover plate 13 and the pressure plate 8 are closed, the temperature inside the medium frequency furnace is maintained, and the smelting efficiency of the medium frequency furnace is improved. The situation in the furnace can be observed through the observation hole 16. When slag is needed, the hydraulic rod 14 can be contracted to drive the slider 15 to open the top cover plate 13, so as to facilitate the slag scooping. At the same time, the molten steel on the outer surface of the top cover plate 13 will slide out along the inclined surface of the inclined bar 17 as the top cover plate 13 is opened, and will not enter the rotating part of the mounting block 12 and the top cover plate 13, causing the molten steel to solidify and cause the top cover plate 13 to be stuck, which can increase the temperature in the furnace and accelerate the smelting efficiency, and prevent the top cover plate 13 from getting stuck.

[0040] Although the 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 medium frequency furnace pressure cover plate with heat protection and anti-deformation, comprising a medium frequency furnace neck (1), a positioning column (2) fixedly installed on the outer surface of the medium frequency furnace neck (1), and a sealing plate (6) is installed through the outer surface of the positioning column (2), and the sealing plate (6) is designed as a circular ring, the side surface of the sealing plate (6) is in contact with the outer surface of the medium frequency furnace neck (1), and the feeding port diameter of the medium frequency furnace neck (1) is smaller than the feeding port diameter of the sealing plate (6), a pressure plate (8) is inserted into the annular hole of the sealing plate (6), and the pressure plate (8) and the medium frequency furnace neck (1) are of concentric design, characterized in that: A threaded locking mechanism is provided between the pressure plate (8) and the intermediate frequency furnace neck (1), and the pressure plate (8) is pressed against the sealing plate (6) by the threaded locking mechanism, so that the sealing plate (6) and the intermediate frequency furnace neck (1) are closely fitted, thereby preventing the sealing plate (6) from being deformed due to heat.

2. The medium frequency furnace cover plate with heat protection and anti-deformation according to claim 1, characterized in that: The threaded engagement mechanism comprises: a support rod (10), the support rod (10) is evenly arranged on the side surface of the pressure plate (8), and a groove is arranged at one end of the support rod (10) away from the pressure plate (8), a hook (3) is fixedly installed on the side surface of the intermediate frequency furnace neck (1), and a screw rod (4) is installed in the interior of the hook (3), and the screw rod (4) is T-shaped, the screw rod (4) passes through the groove of the support rod (10), and a nut (5) is threadedly installed on the outer surface of the screw rod (4), and the side surface of the nut (5) is in contact with the outer surface of the support rod (10).

3. The medium frequency furnace cover plate with heat protection and anti-deformation according to claim 1, characterized in that: A material guide port (7) is fixedly mounted on the outer surface of one end of the sealing plate (6), and the material guide port (7) is designed to be inclined. A notch is provided on the side surface of one end of the pressing plate (8), and the notch of the pressing plate (8) is engaged with the material guide port (7).

4. The medium frequency furnace cover plate with heat protection and anti-deformation according to claim 1, characterized in that: The inner surface of the pressure plate (8) is evenly provided with buckle teeth (9), and the buckle teeth (9) are located at an end of the pressure plate (8) away from the medium frequency furnace neck (1).

5. The medium frequency furnace cover plate with heat protection and anti-deformation according to claim 2, characterized in that: A mounting hole (11) is provided on the side surface of one end of the support rod (10) away from the buckle tooth (9), and the mounting hole (11) passes through the outer surfaces of both sides of the support rod (10) respectively.

6. The medium frequency furnace cover plate with heat protection and anti-deformation according to claim 1, characterized in that: A rotating mechanism is provided between the intermediate frequency furnace neck (1) and the side surface of the pressure plate (8), and the temperature of the molten iron when the intermediate frequency furnace is melted is increased by the rotating mechanism, thereby improving the working efficiency of the intermediate frequency furnace.

7. The medium frequency furnace cover plate with heat protection and anti-deformation according to claim 6, characterized in that: The rotating mechanism comprises: a mounting block (12), the mounting block (12) being fixedly mounted on one end of the intermediate frequency furnace neck (1) away from the material guide port (7), and a top cover plate (13) being rotatably mounted on one end of the mounting block (12) close to the sealing plate (6), and an observation hole (16) being provided through the center of the top cover plate (13), a hydraulic rod (14) being rotatably mounted on the outer surface of one end of the mounting block (12) away from the buckle tooth (9), and a sliding part of the top cover plate (13) at one end of the top cover plate (13) away from the sealing plate (6) A slider (15) is movably installed, and the outer surface of the slider (15) is rotatably connected to the output end of the hydraulic rod (14); the side surface of the top cover plate (13) is in contact with the side surface of the pressure plate (8), and the top cover plate (13) does not block the material guide port (7); an inclined bar (17) is provided at one end of the top cover plate (13) away from the observation hole (16), and the inclined bar (17) is triangular in design, and the inclined bar (17) does not fit the side surfaces of the sealing plate (6) and the pressure plate (8).

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