Steel plant converter fire door convenient to lift

Abstract

The utility model relates to the field of converter fire-blocking doors, and discloses a steel plant converter fire-blocking door convenient to lift, which comprises a fire-blocking door body arranged right in front of a converter charging port, a first U-shaped frame fixedly mounted on the outer wall of a converter and positioned on the right side of the charging port, and a second U-shaped frame fixedly mounted on the outer wall of the converter and positioned on the left side of the charging port, the first U-shaped frame and the second U-shaped frame are symmetrically arranged, and the right side of the fireproof door body extends into the first U-shaped frame and is fixedly provided with a first connecting base. Compared with the prior art, the device has the following advantages and effects that vertical lifting of the fireproof door body is conveniently controlled, an existing mode of horizontally opening a fireproof door can be effectively replaced, the effect of conveniently opening and closing the fireproof door body is achieved when materials are fed into the converter, and the inclination angle and the inclination direction of the sampling pipe are conveniently adjusted at multiple angles; therefore, different parts in the converter can be sampled conveniently, and the effect of convenient sampling is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of converter fire-blocking doors, and in particular to a converter fire-blocking door for a steel plant which is easy to lift. Background Art

[0002] Converter steelmaking uses molten iron, scrap steel, and ferroalloys as the main raw materials. It does not rely on external energy sources, but relies on the physical heat of the molten iron itself and the heat generated by the chemical reaction between the components of the molten iron to complete the steelmaking process in the converter. Converters are divided into acidic and alkaline types according to refractory materials. According to the location where the gas is blown into the furnace, there are top blowing, bottom blowing, and side blowing; according to the type of gas, there are air converters and oxygen converters. Alkaline oxygen top blowing and top and bottom combined blowing converters are the most commonly used steelmaking equipment due to their fast production speed, high single furnace output, low cost, and low investment. At present, converters are mainly used for the production of carbon steel, alloy steel, and the smelting of copper and nickel. The fire-blocking door is an essential equipment in the converter steelmaking industry. Its function is to block the high temperature and flame in the converter. During smelting, the fire-blocking door needs to be opened or closed frequently to feed materials into the converter.

[0003] In the related art, the fire-blocking door is usually rotatably installed on the outer wall around the charging port of the converter by connecting parts such as hinges and hinges. When the fire-blocking door needs to be opened to feed materials into the converter, the fire-blocking door is opened in a flat opening manner. When the operator pushes the material trolley to the side of the fire-blocking door, the material trolley will block the opening of the fire-blocking door when opening the fire-blocking door in a flat opening manner, which may cause the process of opening the fire-blocking door to be inconvenient and not smooth. In addition, some fire-blocking doors are provided with sampling ports for sampling inside the converter, but the sampling ports are mostly fixed on the fire-blocking door, and the sampling direction and sampling angle are fixed, which makes it inconvenient to sample different parts of the converter. Therefore, we propose a steel mill converter fire-blocking door that is easy to lift to solve the above problems. Utility Model Content

[0004] The purpose of the present application is to provide a steel plant converter fire damper which is easy to lift and lower. The fire damper body can be easily controlled to vertically lift and lower, and can effectively replace the existing swing-open fire damper. When feeding into the converter, the fire damper body can be easily opened and closed, and the inclination angle and inclination direction of the sampling tube can be easily adjusted at multiple angles to facilitate sampling of different parts of the converter, thereby achieving the effect of convenient sampling.

[0005] The above technical object of the present application is achieved through the following technical solutions: A converter fire door that is convenient to lift, including a fire door body disposed directly in front of the converter charging port, a first U-shaped frame fixedly installed on the outer wall of the converter and located on the right side of the charging port, and a second U-shaped frame fixedly installed on the outer wall of the converter and located on the left side of the charging port. The first U-shaped frame and the second U-shaped frame are symmetrically arranged. The right side of the fire door body extends into the first U-shaped frame and is fixedly installed with a first connecting seat, and the first connecting seat is in sliding contact with one side wall of the first U-shaped frame. The left side of the fire door body extends into the second U-shaped frame and is fixedly installed with a second connecting seat, and the second connecting seat is in sliding contact with one side wall of the second U-shaped frame. The rear side wall of the fire door body, the rear side wall of the first U-shaped frame, and the rear side wall of the second U-shaped frame are located in the same vertical plane. A driving mechanism for controlling the lifting of the fire door body is provided on the first U-shaped frame, and a sampling mechanism for facilitating sampling inside the converter is provided on the fire door body.

[0006] The further setting of the present application is: The driving mechanism includes a shaft seat, a threaded rod, and a motor. The shaft seat is fixedly installed on the bottom inner wall of the first U-shaped frame. The threaded rod is rotatably installed on the shaft seat. The first connecting seat is threadedly sleeved on the threaded rod. The motor is fixedly installed on the top of the first U-shaped frame, and the output shaft end of the motor is fixedly connected to the top end of the threaded rod.

[0007] The further setting of the present application is: A vertical guiding rod is fixedly installed inside the second U-shaped frame, and the second connecting seat is slidably sleeved on the vertical guiding rod.

[0008] The further setting of the present application is: The bottom right side of the fire door body is in contact with the bottom inner wall of the first U-shaped frame, and the bottom left side of the fire door body is in contact with the bottom inner wall of the second U-shaped frame.

[0009] The further setting of the present application is: The sampling mechanism includes a fixed seat, a spherical ball, a sampling tube, and a heat-insulating end cover. The fixed seat is fixedly installed on the front side wall of the fire door body. The rear side of the fixed seat penetrates the fire door body. A spherical cavity is opened inside the fixed seat. The spherical ball is rotatably installed in the spherical cavity. A first trumpet-shaped through hole is opened on the front side inner wall of the spherical cavity, and a second trumpet-shaped through hole is opened on the rear side inner wall of the spherical cavity. The sampling tube is fixedly installed on the spherical ball. The rear end of the sampling tube penetrates the spherical ball and extends into the second trumpet-shaped through hole. The front end of the sampling tube penetrates the first trumpet-shaped through hole, and the heat-insulating end cover is threadedly installed at the front end of the sampling tube.

[0010] The further setting of the present application is: A heat-insulating sleeve is fixedly sleeved on the outer tube wall of the front end of the sampling tube.

[0011] The further setting of the present application is: The first trumpet-shaped through hole and the second trumpet-shaped through hole have the same shape and size and are symmetrically arranged.

[0012] The present application is further configured as follows: the rear side wall of the fixing seat is flush with the rear side wall of the fire-blocking door body.

[0013] The present application includes at least one of the following beneficial technical effects:

[0014] 1. The present application utilizes a driving mechanism consisting of an axle seat, a threaded rod and a motor to facilitate the control of the vertical lifting of the fire-blocking door body, which can effectively replace the existing flat-opening fire-blocking door method, and can achieve the effect of convenient opening and closing of the fire-blocking door body when adding materials to the inside of the converter.

[0015] 2. The present application utilizes a sampling mechanism consisting of a fixed seat, a sphere, a sampling tube and an insulating end cover to facilitate multi-angle adjustment of the inclination angle and inclination direction of the sampling tube, so as to facilitate sampling of different parts in the converter, thereby achieving a convenient sampling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 2 is a schematic diagram of the main stereoscopic structure of this embodiment.

[0017] Figure 2 2 is a rear-view stereoscopic structural schematic diagram of the present embodiment.

[0018] Figure 3 It is a schematic diagram of the left-side sectional structure of this embodiment.

[0019] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of part A.

[0020] In the figure, 1, fire door body; 2, first U-shaped frame; 3, second U-shaped frame; 4, first connecting seat; 5, second connecting seat; 6, shaft seat; 7, threaded rod; 8, motor; 9, vertical guide rod; 10, fixed seat; 11, spherical cavity; 12, sphere; 13, first trumpet-shaped through hole; 14, second trumpet-shaped through hole; 15, sampling tube; 16, thermal insulation end cover; 17, thermal insulation sleeve. DETAILED DESCRIPTION

[0021] The technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0022] See also Figure 1 , Figure 2 , Figure 3 and Figure 4, this application provides a converter fire door that is convenient to lift, including a fire door body 1 arranged directly in front of the converter charging opening, a first U-shaped frame 2 fixedly installed on the outer wall of the converter and located on the right side of the charging opening, and a second U-shaped frame 3 fixedly installed on the outer wall of the converter and located on the left side of the charging opening. The first U-shaped frame 2 and the second U-shaped frame 3 are symmetrically arranged. The fire door body 1 is used to block the charging opening on the converter, and the cross-sectional dimension of the fire door body 1 is larger than the cross-sectional dimension of the charging hole. The right side of the fire door body 1 extends into the first U-shaped frame 2 and is fixedly installed with a first connecting seat 4. The first connecting seat 4 is in sliding contact with one side wall of the first U-shaped frame 2. The left side of the fire door body 1 extends into the second U-shaped frame 3 and is fixedly installed with a second connecting seat 5. The second connecting seat 5 is in sliding contact with one side wall of the second U-shaped frame 3. In order to ensure that the fire door body 1 fits the outer wall of the converter around the charging opening and enhance the sealing effect when the fire door body 1 blocks the charging opening, the rear side walls of the fire door body 1, the first U-shaped frame 2, and the second U-shaped frame 3 are set to be in the same vertical plane, where:

[0023] A driving mechanism for controlling the lifting of the fire door body 1 is provided on the first U-shaped frame 2. The driving mechanism includes a shaft seat 6, a threaded rod 7, and a motor 8. The shaft seat 6 is fixedly installed on the bottom inner wall of the first U-shaped frame 2. The threaded rod 7 is rotatably installed on the shaft seat 6. The first connecting seat 4 is threadedly sleeved on the threaded rod 7. The motor 8 is fixedly installed on the top of the first U-shaped frame 2. The output shaft end of the motor 8 is fixedly connected to the top end of the threaded rod 7. The motor 8 is used to control the forward or reverse rotation of the threaded rod 7. By using the threaded connection and cooperation between the first connecting seat 4 and the threaded rod 7, when the threaded rod 7 rotates, the first connecting seat 4 can be controlled to drive the fire door body 1 to lift. It should be noted that the motor 8 is a market-purchased reversible motor, and the wiring method and control method of the motor 8 belong to the mature technology in this field and are fully disclosed, so no further description will be made in this article. A sampling mechanism for facilitating sampling inside the converter is provided on the fire door body 1. The sampling mechanism includes a fixed seat 10, a spherical ball 12, a sampling tube 15, and a heat insulation end cover 16. The fixed seat 10 is fixedly installed on the front side wall of the fire door body 1. The rear side of the fixed seat 10 penetrates through the fire door body 1. A spherical cavity 11 is opened inside the fixed seat 10. The spherical ball 12 is rotatably installed in the spherical cavity 11. A first flared through hole 13 is opened on the front side inner wall of the spherical cavity 11. A second flared through hole 14 is opened on the rear side inner wall of the spherical cavity 11. The sampling tube 15 is fixedly installed on the spherical ball 12. The rear end of the sampling tube 15 penetrates through the spherical ball 12 and extends into the second flared through hole 14. The front end of the sampling tube 15 penetrates through the first flared through hole 13. The shapes and sizes of the first flared through hole 13 and the second flared through hole 14 are the same and are symmetrically arranged. The heat insulation end cover 16 is threadedly installed at the front end of the sampling tube 15. By using the heat insulation end cover 16, the front port of the sampling tube 15 can be blocked. By unscrewing the heat insulation end cover 16, sampling tools such as sampling tongs and sampling spoons with a certain length can be passed through the inside of the sampling tube 15 and into the converter, which facilitates the sampling operation. By using the rotational connection and cooperation between the spherical ball 12 and the spherical cavity 11, the inclination angle and inclination direction of the sampling tube 15 can be adjusted at multiple angles, so as to sample different parts inside the converter, achieving the effect of convenient sampling.

[0024] In this embodiment, in order to ensure that the fire door body 1 can maintain stable vertical lifting, a vertical guiding rod 9 is fixedly installed inside the second U-shaped frame 3. The second connecting seat 5 is slidably sleeved on the vertical guiding rod 9.

[0025] In this embodiment, the right side of the bottom of the fire door body 1 contacts the bottom inner wall of the first U-shaped frame 2, and the left side of the bottom of the fire door body 1 contacts the bottom inner wall of the second U-shaped frame 3. It should be supplemented that when the right side and the left side of the bottom of the fire door body 1 contact the bottom inner wall of the first U-shaped frame 2 and the bottom inner wall of the second U-shaped frame 3 respectively, at this time, the fire door body 1 descends to the lowest position, and the fire door body 1 can fully block the charging port on the converter.

[0026] In this embodiment, in order to prevent the operator from getting burned when the palm of the operator touches the sampling tube 15 , a heat insulation sleeve 17 is fixedly mounted on the outer tube wall of the front end of the sampling tube 15 .

[0027] In this embodiment, in order to ensure that the fixing seat 10 does not affect the smooth lifting and lowering of the fire-blocking door body 1 , the rear side wall of the fixing seat 10 is flush with the rear side wall of the fire-blocking door body 1 .

[0028] Through the above structure, the steel mill converter fire-blocking door with easy lifting provided by the present application is convenient to control the vertical lifting of the fire-blocking door body 1 when in use, and can effectively replace the existing flat opening fire-blocking door mode. When feeding into the converter, the fire-blocking door body 1 can be conveniently opened and closed, and the inclination angle and inclination direction of the sampling tube 15 can be conveniently adjusted at multiple angles to facilitate sampling of different parts in the converter, thus achieving the effect of convenient sampling. In specific operation, the device is installed and fixed as a whole around the charging port on the outer wall of the converter. During use, when it is necessary to open the fire-blocking door body 1 and expose the charging port to feed materials into the converter, the motor 8 is started to rotate forward, and the motor 8 drives the threaded rod 7 to rotate forward. Under the sliding connection and guiding action of the second connecting seat 5 and the vertical guide rod 9, the first connecting seat 4, the fire-blocking door body 1 and the second connecting seat 5 can be controlled to rise vertically, and the fire-blocking door body 1 can gradually release the blocking of the charging port. When the charging port is exposed to a suitable size or all out according to needs, the motor 8 is stopped, and the operator can feed materials into the converter from the charging port;

[0029] When it is necessary to close the fire-blocking door body 1 to fully block the charging port, by starting the motor 8 to rotate in the opposite direction, the motor 8 drives the threaded rod 7 to rotate in the opposite direction, so as to control the first connecting seat 4, the fire-blocking door body 1 and the second connecting seat 5 to vertically descend until the bottom right side and the bottom left side of the fire-blocking door body 1 contact the bottom inner wall of the first U-shaped frame 2 and the bottom inner wall of the second U-shaped frame 3 respectively, and then stop the operation of the motor 8, so that the fire-blocking door body 1 can fully block the charging port;

[0030] When it is necessary to take samples from the inside of the converter, take a sampling tool of appropriate length (such as sampling pliers, sampling spoon, etc.), and by unscrewing the insulating end cover 16, the sampling end of the sampling tool can be passed through the inside of the sampling tube 15 into the converter to perform the sampling operation. During the sampling process, the inclination angle and inclination direction of the sampling tube 15 can be adjusted at multiple angles by utilizing the rotational connection between the ball 12 and the spherical cavity 11, so as to facilitate sampling of different parts of the converter, thereby achieving the effect of convenient sampling. After the sampling is completed, the insulating end cover 16 can be tightened on the front end of the sampling tube 15.

Claims

1. A steel mill converter fire-blocking door that is easy to lift, characterized in that: The invention comprises a fire-blocking door body (1) arranged in front of a charging port of a converter, a first U-shaped frame (2) fixedly mounted on the outer wall of the converter and located on the right side of the charging port, and a second U-shaped frame (3) fixedly mounted on the outer wall of the converter and located on the left side of the charging port, wherein the first U-shaped frame (2) and the second U-shaped frame (3) are arranged symmetrically, the right side of the fire-blocking door body (1) extends into the first U-shaped frame (2) and is fixedly mounted with a first connecting seat (4), the first connecting seat (4) is in sliding contact with a side wall of the first U-shaped frame (2), and the fire-blocking door body (1) is provided with a first connecting seat (4) fixedly mounted on the first connecting seat (4), and the first connecting seat (4) is in sliding contact with a side wall of the first U-shaped frame (2). The left side of the main body (1) extends into the second U-shaped frame (3) and is fixedly mounted with a second connecting seat (5); the second connecting seat (5) is in sliding contact with a side wall of the second U-shaped frame (3); the rear side wall of the fire-blocking door main body (1), the rear side wall of the first U-shaped frame (2) and the rear side wall of the second U-shaped frame (3) are located on the same vertical plane; the first U-shaped frame (2) is provided with a driving mechanism for controlling the lifting and lowering of the fire-blocking door main body (1); and the fire-blocking door main body (1) is provided with a sampling mechanism for conveniently sampling the interior of the converter.

2. The steel mill converter fire-blocking door that is easy to lift according to claim 1 is characterized in that: The driving mechanism comprises an axle seat (6), a threaded rod (7) and a motor (8); the axle seat (6) is fixedly mounted on the bottom inner wall of the first U-shaped frame (2); the threaded rod (7) is rotatably mounted on the axle seat (6); the first connecting seat (4) is threadedly sleeved on the threaded rod (7); the motor (8) is fixedly mounted on the top of the first U-shaped frame (2); and the output shaft end of the motor (8) is fixedly connected to the top end of the threaded rod (7).

3. The steel mill converter fire-blocking door that is easy to lift according to claim 2 is characterized in that: A vertical guide rod (9) is fixedly installed inside the second U-shaped frame (3), and the second connecting seat (5) is slidably sleeved on the vertical guide rod (9).

4. The steel mill converter fire-blocking door that is easy to lift according to claim 1 is characterized in that: The right side of the bottom of the fire-blocking door body (1) contacts the inner wall of the bottom of the first U-shaped frame (2), and the left side of the bottom of the fire-blocking door body (1) contacts the inner wall of the bottom of the second U-shaped frame (3).

5. The steel mill converter fire-blocking door that is easy to lift according to claim 1 is characterized in that: The sampling mechanism comprises a fixing seat (10), a sphere (12), a sampling tube (15) and a heat-insulating end cover (16); the fixing seat (10) is fixedly mounted on the front side wall of the fire-blocking door body (1); the rear side of the fixing seat (10) passes through the fire-blocking door body (1); a spherical cavity (11) is provided in the fixing seat (10); the sphere (12) is rotatably mounted in the spherical cavity (11); and a first spherical cavity (15) is provided on the front inner wall of the spherical cavity (11). a trumpet-shaped through hole (13); a second trumpet-shaped through hole (14) is opened on the rear inner wall of the spherical cavity (11); the sampling tube (15) is fixedly mounted on the sphere (12); the rear end of the sampling tube (15) passes through the sphere (12) and extends into the second trumpet-shaped through hole (14); the front end of the sampling tube (15) passes through the first trumpet-shaped through hole (13); and the heat-insulating end cover (16) is threadedly mounted on the front end of the sampling tube (15).

6. The steel mill converter fire-blocking door that is easy to lift and lower according to claim 5 is characterized in that: A heat insulation sleeve (17) is fixedly mounted on the outer tube wall at the front end of the sampling tube (15).

7. The steel mill converter fire-blocking door that is easy to lift and lower according to claim 5 is characterized in that: The first trumpet-shaped through hole (13) and the second trumpet-shaped through hole (14) have the same shape and size and are symmetrically arranged.

8. The steel mill converter fire-blocking door that is easy to lift and lower according to claim 5 is characterized in that: The rear side wall of the fixing seat (10) is flush with the rear side wall of the fire-blocking door body (1).

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