Blast furnace coal injection gun anti-blocking mechanism

Abstract

The utility model discloses an anti-blocking mechanism for a blast furnace coal injection gun in the technical field of blast furnace coal injection guns, which comprises a belly pipe and a coal injection gun assembly, the coal injection gun assembly comprises an outer pipe communicated with the belly pipe, an inner pipe is connected to the inner wall of the outer pipe in an attached mode, the inner pipe is communicated with the belly pipe, a bearing is arranged at the top of the inner pipe and arranged on a communicating pipe, and a valve is arranged on the communicating pipe; the movable plate is driven by the electric guide rail to move upwards to be inserted into the inner pipe, so that the movable plate is in contact with the inner wall of the inner pipe, then the inner pipe is driven by the driving assembly to rotate, a circle of pulverized coal attached to the inner wall of the inner pipe can be scraped by the movable plate, the anti-blocking purpose is achieved, the coal injection gun does not need to be disassembled, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace coal injection guns, in particular to a blast furnace coal injection gun anti-blocking mechanism. Background Art

[0002] Blast furnace coal injection mainly consists of coal storage and transportation, coal powder preparation, coal powder conveying, coal powder injection, dry gas preparation and gas supply power system. The coal injection gun is one of the important equipment in the blast furnace coal injection system. The coal injection gun sends the coal powder sprayed from the coal injection gun into the container through a straight blowing pipe.

[0003] After a period of use, coal powder will adhere to the inner wall of the coal injection gun, causing the inner diameter of the gun mouth to gradually decrease and become blocked. The applicant found that the traditional method of cleaning the coal injection gun by disassembling it is troublesome. Therefore, we propose a blast furnace coal injection gun anti-blocking mechanism. Utility Model Content

[0004] The utility model aims to provide a blast furnace coal injection gun anti-blocking mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blast furnace coal injection gun anti-blocking mechanism, comprising a straight blowing pipe and a coal injection gun assembly;

[0006] The coal injection gun assembly comprises an outer tube connected to the direct blowing pipe, an inner tube is fitted and connected to the inner wall of the outer tube, and the inner tube and the direct blowing pipe are mutually connected, a bearing is arranged on the top of the inner tube, and the bearing is arranged on the connecting pipe, and a valve is arranged on the connecting pipe;

[0007] The outer tube is provided with a driving assembly, and the driving assembly is connected to the inner tube;

[0008] An electric guide rail is arranged at the bottom of the direct blowing pipe, and a movable plate matching the inner wall of the inner pipe is arranged on the output end of the electric guide rail, and the movable plate runs through the bottom of the direct blowing pipe.

[0009] As a preferred solution of the anti-blocking mechanism of a blast furnace coal injection gun described in the utility model, the driving component includes a motor, a driving gear is arranged on the output shaft of the motor, a driven gear is meshedly connected to the driving gear, and the driven gear is arranged on the inner tube.

[0010] As a preferred solution of the anti-blocking mechanism of the blast furnace coal injection gun described in the utility model, the top of the inner tube extends to the outside of the outer tube, and the driven gear is located above the outer tube.

[0011] As a preferred solution of the anti-blocking mechanism of the blast furnace coal injection gun described in the utility model, wherein: the motor is arranged on a mounting plate, and the mounting plate is arranged on the outer tube.

[0012] As a preferred solution of the anti-blocking mechanism of the blast furnace coal injection gun described in the utility model, the top of the movable plate is aligned with the bottom inner wall of the straight blowing pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The movable plate is driven upward by the electric guide rail to be inserted into the inner tube, so that the movable plate contacts the inner wall of the inner tube. At this time, the inner tube is driven to rotate by the driving component, so that the circle of coal powder attached to the inner wall of the inner tube can be scraped off by the movable plate, thereby achieving the purpose of anti-blocking, and there is no need to disassemble the coal injection gun, saving time and effort;

[0015] 2. After use, the movable plate can be reset downward without affecting coal injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a blast furnace coal injection gun anti-blocking mechanism of the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the overall structure of a blast furnace coal injection gun anti-blocking mechanism of the utility model;

[0018] Figure 3 The utility model is a schematic structural diagram of position A of a blast furnace coal injection gun anti-blocking mechanism.

[0019] In the figure: 1. direct blowing pipe; 2. outer pipe; 3. inner pipe; 4. bearing; 5. connecting pipe; 6. valve; 7. electric guide rail; 8. movable plate; 9. driven gear; 10. driving gear; 11. motor; 12. mounting plate. DETAILED DESCRIPTION

[0020] 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.

[0021] As mentioned in the background technology, in view of the problem that it is troublesome to clean the coal injection gun by disassembling it in the prior art, the utility model provides a blast furnace coal injection gun anti-blocking mechanism.

[0022] Example 1

[0023] Reference Figures 1 to 3 , a blast furnace coal injection gun anti-blocking mechanism, comprising a straight blowing pipe 1 and a coal injection gun assembly;

[0024] The coal injection gun assembly includes an outer tube 2 connected to a direct blowing pipe 1, an inner tube 3 is fitted and connected to the inner wall of the outer tube 2, and the inner tube 3 and the direct blowing pipe 1 are mutually connected, a bearing 4 is arranged on the top of the inner tube 3, and the bearing 4 is arranged on a connecting pipe 5, so that the inner tube 3 can rotate on the connecting pipe 5 through the bearing 4, and is not affected by the contact with the outer tube 2, and a valve 6 is arranged on the connecting pipe 5, and by opening the valve 6, the coal powder enters the inner tube 3 through the connecting pipe 5, and then is blown into the container through the direct blowing pipe 1;

[0025] The outer tube 2 is provided with a driving assembly, and the driving assembly is connected to the inner tube 3, and the driving assembly is used to drive the inner tube 3 to rotate;

[0026] An electric guide rail 7 is provided at the bottom of the direct blowing pipe 1, and a movable plate 8 matching the inner wall of the inner tube 3 is provided on the output end of the electric guide rail 7, and the movable plate 8 passes through the bottom of the direct blowing pipe 1. The movable plate 8 is driven by the electric guide rail 7 to move upward and insert into the inner tube 3, so that the movable plate 8 contacts the inner wall of the inner tube 3. At this time, the inner tube 3 is driven to rotate by the driving component, so that a circle of coal powder attached to the inner wall of the inner tube 3 can be scraped off by the movable plate 8 into the direct blowing pipe 1.

[0027] The driving assembly includes a motor 11. The electric guide rail 7 and the motor 11 are powered and controlled by existing technologies. A driving gear 10 is provided on the output shaft of the motor 11. A driven gear 9 is meshedly connected to the driving gear 10. The driven gear 9 is provided on the inner tube 3. The motor 11 drives the driving gear 10 to rotate, so that the driven gear 9 drives the inner tube 3 to rotate.

[0028] The top of the inner tube 3 extends to the outside of the outer tube 2 , and the driven gear 9 is located above the outer tube 2 , so that the driven gear 9 is not obstructed by the outer tube 2 .

[0029] The motor 11 is disposed on a mounting plate 12 , and the mounting plate 12 is disposed on the outer tube 2 for fixing the motor 11 .

[0030] Example 2

[0031] Reference Figure 2 The top of the movable plate 8 is aligned with the bottom inner wall of the straight blowing pipe 1, so that the movable plate 8 does not block the blowing of the straight blowing pipe 1 when not in use.

[0032] The rest of the structure is the same as that of Example 1.

[0033] 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 blast furnace coal injection gun anti-blocking mechanism, characterized in that: include, A straight blowpipe (1) and a coal injection gun assembly; The coal injection gun assembly comprises an outer tube (2) connected to a direct blowing tube (1); an inner tube (3) is fitted and connected to the inner wall of the outer tube (2); the inner tube (3) and the direct blowing tube (1) are connected to each other; a bearing (4) is arranged on the top of the inner tube (3); the bearing (4) is arranged on a connecting tube (5); and a valve (6) is arranged on the connecting tube (5); The outer tube (2) is provided with a driving assembly, and the driving assembly is connected to the inner tube (3); An electric guide rail (7) is arranged at the bottom of the direct blowing pipe (1), and a movable plate (8) matching the inner wall of the inner pipe (3) is arranged at the output end of the electric guide rail (7), and the movable plate (8) passes through the bottom of the direct blowing pipe (1).

2. The anti-blocking mechanism for a blast furnace coal injection gun according to claim 1, characterized in that: The driving assembly comprises a motor (11), an output shaft of the motor (11) is provided with a driving gear (10), a driven gear (9) is meshingly connected to the driving gear (10), and the driven gear (9) is provided on the inner tube (3).

3. The anti-blocking mechanism for a blast furnace coal injection gun according to claim 2, characterized in that: The top of the inner tube (3) extends to the outside of the outer tube (2), and the driven gear (9) is located above the outer tube (2).

4. The anti-blocking mechanism for coal injection gun of blast furnace according to claim 2, characterized in that: The motor (11) is arranged on a mounting plate (12), and the mounting plate (12) is arranged on an outer tube (2).

5. The anti-blocking mechanism for coal injection gun of blast furnace according to claim 1, characterized in that: The top of the movable plate (8) is aligned with the bottom inner wall of the straight blowing pipe (1).

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