Furnace door device of box-type resistance furnace for magnesia carbon brick production

Abstract

The utility model relates to the technical field of resistance furnaces, and provides a furnace door device of a box-type resistance furnace for magnesia carbon brick production, which comprises a resistance furnace main body, an overturning frame and a furnace door, the overturning frame is rotatably connected to the top of the resistance furnace, the furnace door is vertically and slidably connected in the overturning frame, and a pulling overturning assembly is arranged on the resistance furnace main body and the overturning frame. The suction gas collection assembly is arranged in the furnace door, the back frame is fixed to the outer surface of the resistance furnace body, and a rotating roller is rotationally connected into the back frame. According to the technical scheme, the problem that the opening mode of a furnace door of an existing box-type resistance furnace is mostly the same as the opening mode of various common door bodies in the prior art is solved, that is, the door is opened in an overturning mode and can be achieved by simply arranging a hinge. However, due to the fact that furnace door bricks are arranged on the inner face of the furnace door of the box-type resistance furnace, after the furnace door is opened, the furnace door bricks on the inner face of the furnace door directly face a user, the furnace door bricks often have high waste heat, and the user who operates the furnace door carelessly is prone to being burnt.

Description

Technical Field

[0001] The utility model relates to the technical field of resistance furnaces, and particularly to a furnace door device of a box-type resistance furnace for producing magnesia-carbon bricks. Background Art

[0002] Magnesia-carbon bricks are unburned carbon composite refractory materials made from high-melting-point basic oxide magnesia (melting point 2800 °C) and high-melting-point carbon materials that are difficult to be infiltrated by slag as raw materials, and various non-oxide additives are added. In the processing of magnesia-carbon bricks, a box-type resistance furnace is required.

[0003] For the existing box-type resistance furnace, the opening method of its furnace door is mostly the same as that of various common door opening methods, that is, it adopts a flip-type opening, which can be realized by simply setting a hinge. However, since the inner surface of the furnace door of the box-type resistance furnace is provided with furnace door bricks, after the furnace door is opened, the furnace door bricks on the inner surface of the furnace door will directly face the user, and the furnace door bricks often have a relatively high residual temperature, which will easily burn the users who are a little careless in operation.

[0004] Therefore, improvements are made to the above problems. Content of the Utility Model

[0005] The utility model provides a furnace door device of a box-type resistance furnace for producing magnesia-carbon bricks, and solves the problem that for the existing box-type resistance furnace in the related technology, the opening method of its furnace door is mostly the same as that of various common door opening methods, that is, it adopts a flip-type opening, which can be realized by simply setting a hinge. However, since the inner surface of the furnace door of the box-type resistance furnace is provided with furnace door bricks, after the furnace door is opened, the furnace door bricks on the inner surface of the furnace door will directly face the user, and the furnace door bricks often have a relatively high residual temperature, which will easily burn the users who are a little careless in operation.

[0006] The technical solution of the utility model is as follows: a resistance furnace main body, a flip frame and a furnace door, the flip frame is rotatably connected to the top of the resistance furnace, the rotation connection of the flip frame is driven to flip by a torsion spring, and the furnace door is vertically slidably connected in the flip frame;

[0007] A pulling and flipping assembly, the pulling and flipping assembly is arranged on the resistance furnace main body and the flip frame;

[0008] A suction and gas collection assembly, the suction and gas collection assembly is arranged in the furnace door;

[0009] The pulling and flipping assembly includes a back frame, the back frame is fixed on the outer surface of the resistance furnace main body, a rotating roller is rotatably connected in the back frame, the rotating roller is driven to rotate by a motor, and a support rod is rotatably connected in the back frame, and the support rod is located above the rotating roller.

[0010] As a further technical solution, a cable is connected between the rotating roller and the flipping frame. A driving motor is arranged at the top of the flipping frame. A driving screw rod is rotatably connected to the top of the flipping frame. The driving screw rod is connected to the output end of the driving motor. A threaded groove is formed at the top of the furnace door. The threaded groove is in threaded fit connection with the driving screw rod.

[0011] As a further technical solution, telescopic cylinders are arranged on both outer side surfaces of the main body of the resistance furnace. A limiting block is arranged on the side surface of the flipping frame. The output end of the telescopic cylinder is fixedly connected with a fixing block. The fixing block is detachably attached to the bottom surface of the limiting block.

[0012] As a further technical solution, the suction gas collection assembly includes a suction fan. The suction fan is installed on the surface of the furnace door. An air cavity is formed in the furnace door. A plurality of air collection holes are formed in the air cavity. The output end of the suction fan is communicated with the air cavity.

[0013] As a further technical solution, both the bottom surface of the limiting block and the upper surface of the fixing block are inclined structural surfaces.

[0014] As a further technical solution, the air collection holes are located around the opening of the furnace chamber of the main body of the resistance furnace.

[0015] As a further technical solution, the flipping frame can be rotated upward by 90° through the rotating connection.

[0016] As a further technical solution, the exhaust port of the suction fan faces downward.

[0017] The working principle and beneficial effects of the present utility model are as follows:

[0018] 1. In the present utility model, a pulling and flipping assembly is provided. Through the interaction of structures such as the rotating roller, cable, driving screw rod, telescopic cylinder, limiting block and fixing block, the flipping frame can be pulled and rotated backward by the rotating roller and cable. A torsion spring is arranged at the connection. During reset, it can be pushed back by the elastic force of the torsion spring. When flipping and retracting, it will be controlled to rise upward through the driving screw rod, so that the overall structure of the furnace door covers the top of the main body of the resistance furnace, and the main body of the resistance furnace is in a completely open state, which is convenient for operation.

[0019] 2. In the present utility model, a suction gas collection assembly is provided. Through the suction fan, air cavity and air collection holes, the hot air discharged when the furnace door is opened can be sucked and concentrated to a position for discharge, which can effectively avoid the flaw detection operator. Description of the Drawings

[0020] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0021] Figure 1Structural schematic diagram of the present utility model;

[0022] Figure 2 Axonometric sectional view of the present utility model;

[0023] Figure 3 Axonometric view of the present utility model;

[0024] In the figure: 1. Resistance furnace main body; 2. Turning frame; 3. Furnace door; 4. Pulling and turning assembly; 4-1. Back frame; 4-2. Rotating roller; 4-3. Support rod; 4-4. Cable; 4-5. Driving motor; 4-6. Driving screw; 4-7. Thread groove; 4-8. Telescopic cylinder; 4-9. Limit block; 4-10. Fixed block; 5. Suction and gas collection assembly; 5-1. Suction fan; 5-2. Gas cavity; 5-3. Gas collection hole. Specific implementation manners

[0025] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] As Figures 1 to 3 shown, this embodiment proposes a furnace door device for a box-type resistance furnace used in the production of magnesia-carbon bricks, including

[0027] a resistance furnace main body 1, a turning frame 2, and a furnace door 3. The turning frame 2 is rotatably connected to the top of the resistance furnace, and the rotation connection of the turning frame 2 is driven to turn by a torsion spring. The furnace door 3 is vertically slidably connected within the turning frame 2;

[0028] a pulling and turning assembly 4, and the pulling and turning assembly 4 is arranged on the resistance furnace main body 1 and the turning frame 2;

[0029] a suction and gas collection assembly 5, and the suction and gas collection assembly 5 is arranged within the furnace door 3;

[0030] The pulling and flipping assembly 4 includes a back frame 4-1, which is fixed on the outer surface of the resistance furnace body 1. A rotating roller 4-2 is rotatably connected inside the back frame 4-1. The rotating roller 4-2 is driven to rotate by a motor. A support rod 4-3 is rotatably connected inside the back frame 4-1. The support rod 4-3 is located above the rotating roller 4-2. A cable 4-4 is connected between the rotating roller 4-2 and the flipping frame 2. A driving motor 4-5 is arranged on the top of the flipping frame 2. A driving screw rod 4-6 is rotatably connected to the top of the flipping frame 2. The driving screw rod 4-6 is connected to the output end of the driving motor 4-5. A threaded groove 4-7 is formed in the top of the furnace door 3. The threaded groove 4-7 is connected to the driving screw rod 4-6 through threaded cooperation. Telescopic cylinders 4-8 are arranged on both outer side surfaces of the resistance furnace body 1. A limiting block 4-9 is arranged on the side surface of the flipping frame 2. The output end of the telescopic cylinder 4-8 is fixedly connected with a fixing block 4-10. The fixing block 4-10 is detachably attached to the bottom surface of the limiting block 4-9.

[0031] In this embodiment, in order to achieve the effect of fully opening the furnace door 3, the pulling and flipping assembly 4 is designed. A back frame 4-1 is arranged on the back of the resistance furnace body 1. A rotating roller 4-2 and a support rod 4-3 are rotatably connected in the back frame 4-1. The rotating roller 4-2 is driven to rotate by a motor. A cable 4-4 is connected between the rotating roller 4-2 and the flipping frame 2. By rotating the rotating roller 4-2, the flipping frame 2 can be pulled by the cable 4-4 and the flipping frame 2 can be rotated backward through the rotating connection. A driving motor 4-5 and a driving screw rod 4-6 are arranged on the top of the flipping frame 2. A threaded groove 4-7 is formed in the top of the furnace door 3. The threaded groove 4-7 is connected to the driving screw rod 4-6 through threaded cooperation. After opening, the furnace door 3 can be controlled to move upward by the driving screw rod 4-6 and rotated 90° to the top to be in a fully open state. Limiting blocks 4-9 are arranged on both sides of the flipping frame 2. Telescopic cylinders 4-8 are arranged on both sides of the resistance furnace body 1. A fixing block 4-10 is arranged at the output end of the telescopic cylinder 4-8. In the closed state of the furnace door 3, the furnace door 3 can be firmly connected and fixed to the resistance furnace body 1 by supporting the fixing block 4-10 at the bottom of the limiting block 4-9.

[0032] Furthermore, the suction and gas collection assembly 5 includes a suction fan 5-1, which is installed on the surface of the furnace door 3. An air cavity 5-2 is formed in the furnace door 3. A plurality of air collection holes 5-3 are formed in the air cavity 5-2. The output end of the suction fan 5-1 is communicated with the air cavity 5-2.

[0033] In this embodiment, in order to achieve the effect of sucking hot air to avoid scalding operators when the furnace door 3 is opened, the suction and gas collection assembly 5 is designed. A suction fan 5-1 is fixedly connected to the surface of the furnace door 3. An air cavity 5-2 is formed inside. A plurality of air collection holes 5-3 are formed in the air cavity 5-2. By the suction fan 5-1, the air collection holes 5-3 can generate suction force to suck all the hot air generated when the furnace door 3 is opened and discharge it at a centralized position.

[0034] Furthermore, the bottom surface of the limit block 4-9 and the upper surface of the fixed block 4-10 are both inclined structural surfaces.

[0035] In this embodiment, through the inclined structural surface, after the fixed block 4-10 and the limit block 4-9 are fitted, the effect of correcting and pushing tightly can be achieved.

[0036] Furthermore, the air collecting holes 5-3 are located around the opening of the furnace chamber of the resistance furnace main body 1.

[0037] In this embodiment, by distributing the air collecting holes 5-3 around the opening of the furnace chamber, all the heat can be fully absorbed.

[0038] Furthermore, the turning frame 2 can be rotated upward by 90° through the rotating connection.

[0039] In this embodiment, through the 90° turning angle, after the furnace door 3 is retracted, it can be concentrated on the top of the resistance furnace main body 1, and the furnace chamber is completely opened.

[0040] Furthermore, the exhaust port of the suction fan 5-1 faces downward.

[0041] In this embodiment, through the downward opening direction, the hot air is concentrated and discharged to the bottom, and the operator can avoid directly below.

[0042] When the resistance furnace main body 1 needs to be used and the furnace door 3 is opened when it is in a high-temperature state inside, start the telescopic cylinder 4-8 to separate the fixed block 4-10 from the limit block 4-9, start the rotating roller 4-2 to roll up the cable 4-4, pull the turning frame 2 to open the furnace door 3, and at the same time start the suction fan 5-1. The air collecting holes 5-3 generate suction to absorb and concentrate the discharge of the hot air. Then start the driving motor 4-5, drive the screw 4-6 to rotate and cooperate with the thread groove 4-7 to lift the furnace door 3 upward. After it is fully lifted, continue to start the rotating shaft and pull the turning frame 2 to rotate 90° to cover the top of the resistance furnace main body 1.

[0043] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A furnace door device for a box-type resistance furnace used in the production of magnesia-carbon bricks, characterized in that, including a resistance furnace main body (1), a turnover frame (2) and a furnace door (3), wherein the turnover frame (2) is rotatably connected to the top of the resistance furnace, the rotation connection of the turnover frame (2) is driven to turnover by a torsion spring, and the furnace door (3) is vertically slidably connected in the turnover frame (2); a pulling and turnover assembly (4) which is arranged on the resistance furnace main body (1) and the turnover frame (2); a suction and gas collection assembly (5) which is arranged in the furnace door (3); the pulling and turnover assembly (4) includes a back frame (4-1) fixed on the outer surface of the resistance furnace main body (1), a rotating roller (4-2) rotatably connected in the back frame (4-1), the rotating roller (4-2) is driven to rotate by a motor, and a support rod (4-3) rotatably connected in the back frame (4-1), and the support rod (4-3) is located above the rotating roller (4-2).

2. The furnace door device of the box-type resistance furnace for producing magnesia-carbon bricks according to claim 1, characterized in that, A cable (4-4) is connected between the rotating roller (4-2) and the turnover frame (2), a driving motor (4-5) is arranged on the top of the turnover frame (2), a driving screw rod (4-6) is rotatably connected to the top of the turnover frame (2), the driving screw rod (4-6) is connected to the output end of the driving motor (4-5), a threaded groove (4-7) is formed in the top of the furnace door (3), and the threaded groove (4-7) is in threaded fit connection with the driving screw rod (4-6).

3. The furnace door device of the box-type resistance furnace for producing magnesia-carbon bricks according to claim 2, wherein, Both outer side surfaces of the resistance furnace main body (1) are provided with telescopic cylinders (4-8), a limiting block (4-9) is arranged on the side surface of the turnover frame (2), the output end of the telescopic cylinder (4-8) is fixedly connected with a fixing block (4-10), and the fixing block (4-10) is detachably attached to the bottom surface of the limiting block (4-9).

4. The furnace door device of the box-type resistance furnace for producing magnesia-carbon bricks according to claim 1, characterized in that, The suction and gas collection assembly (5) includes a suction fan (5-1) installed on the surface of the furnace door (3), an air cavity (5-2) is formed in the furnace door (3), a plurality of gas collection holes (5-3) are formed in the air cavity (5-2), and the output end of the suction fan (5-1) is communicated with the air cavity (5-2).

5. The furnace door device of the box-type resistance furnace for producing magnesia-carbon bricks according to claim 3, characterized in that, Both the bottom surface of the limiting block (4-9) and the upper surface of the fixing block (4-10) are inclined structural surfaces.

6. The furnace door device of the box-type resistance furnace for producing magnesia-carbon bricks according to claim 4, characterized in that, The gas collection holes (5-3) are located around the opening of the furnace chamber of the resistance furnace main body (1).

7. The furnace door device of the box-type resistance furnace for producing magnesia-carbon bricks according to claim 1, characterized in that, The turnover frame (2) can be rotated upward by 90° through the rotation connection.

8. The furnace door device of the box-type resistance furnace for producing magnesia-carbon bricks according to claim 4, characterized in that, The exhaust port of the suction fan (5-1) faces downward.

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