Converter coal injection gun anti-blocking device

Abstract

The utility model discloses an anti-blocking device for a coal injection gun of a converter, and relates to the technical field of anti-blocking of coal injection guns. The device comprises an outer pipe, one end of the outer pipe is rotationally connected with a scraper, one end of the scraper is of a conical structure, one side of the scraper is rotationally connected with a rotating frame, one end of the rotating frame is rotationally connected with a threaded rod, a support is arranged in the outer pipe, and the support is in threaded connection with the threaded rod. By arranging the outer pipe, the scraper, the rotating frame, the threaded rod and the rotating ring, the scraper can accurately penetrate into the end of the coal injection gun, the rotating frame and the threaded rod are linked to adjust the angle of the scraper, the scraper can be conveniently inserted into a coking area in a low-resistance mode in an inclined state, and the scraper is converted into a vertical state to enhance scraping force after being in place. And the rotating ring can ensure that the device is coaxially positioned and fixed through elastic contact during operation, so that the scraper is prevented from deviating, the coking material can be efficiently stripped and is not easy to remain, and the problems that the traditional manual decoking is difficult to deepen and the operation is strenuous are solved.

Description

Technical Field

[0001] This utility model relates to the field of coal injection lance anti-clogging technology, specifically a converter coal injection lance anti-clogging device. Background Technology

[0002] The blast furnace pulverized coal injection system mainly consists of raw coal storage and transportation, pulverized coal preparation, pulverized coal conveying, pulverized coal injection, drying gas preparation, and gas supply power system. The pulverized coal injection lance is one of the important pieces of equipment in the blast furnace pulverized coal injection system. It is usually made of heat-resistant seamless steel pipe and is used to inject pulverized coal into the blast furnace.

[0003] When cleaning the coking at one end of the pulverized coal injection gun, the existing anti-clogging device usually uses a coking removal rod to scrape off the coking little by little from the ignition port. Since the coking is located at one end of the pulverized coal injection gun, it is quite laborious for workers to scrape it off with the coking removal rod. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a converter pulverized coal injection gun anti-clogging device to solve the technical problem that the coking location is at one end of the pulverized coal injection gun, making it more laborious for workers to scrape it off with a coking removal rod.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a converter pulverized coal injection gun anti-clogging device, comprising an outer tube, a scraper rotatably connected to one end of the outer tube, the scraper having a tapered structure at one end, a rotating frame rotatably connected to one side of the scraper, a threaded rod rotatably connected to one end of the rotating frame, and a support provided inside the outer tube, the support and the threaded rod being threadedly connected.

[0006] By adopting the above technical solution, the mechanical self-locking characteristic of the threaded pair ensures that the angle of the scraper is fixed and does not deviate during operation, and the conical scraper structure realizes the function conversion between insertion and scraping.

[0007] Furthermore, a rotating ring is fitted around the outside of the outer tube, and a rubber ring is fixedly connected to the outer surface of the rotating ring.

[0008] By adopting the above technical solution, the friction between the outer tube and the inner wall of the pulverized coal gun during the insertion and rotation of the outer tube is resolved, thus avoiding wear on the outer tube.

[0009] Furthermore, the inner ring of the rotating ring is provided with several rollers, and there are two rotating rings, which serve as supports.

[0010] By adopting the above technical solution, and through the combination of rolling support and dual-point support, low resistance and high efficiency are achieved during rotation.

[0011] Furthermore, a first handle is fixedly connected to one end of the outer tube, and a second handle is fixedly connected to the other end of the threaded rod.

[0012] By adopting the above technical solutions, an ergonomic operating interface is created, reducing the error rate. The spatial arrangement of the dual handles allows for quick control of the propulsion and scraper angle adjustment as needed.

[0013] Furthermore, one of the rotating rings has a through hole, and an airbag is fixedly connected to the outer surface of the rotating ring.

[0014] By adopting the above technical solution, dynamic friction control technology reduces the frictional resistance during the travel phase compared to the rubber ring solution, while ensuring subsequent rotational support for the outer tube.

[0015] Furthermore, the air tube of one of the airbags passes through a through hole and is connected to an external air source, and the air tube of the other airbag is connected to an external air source.

[0016] By adopting the above technical solution, the dual-airbag independent air supply system achieves reliable inflation of the device through branch air control, ensuring the smooth operation of subsequent processes.

[0017] In summary, the present invention has the following main advantages:

[0018] 1. This utility model, by setting an outer tube, scraper, rotating frame, threaded rod and rotating ring, enables the scraper to accurately penetrate into the end of the pulverized coal gun. The rotating frame and threaded rod are linked to adjust the scraper angle. In the tilted state, it is easy to insert into the coking area with low resistance. After entering the position, it turns into a vertical state to enhance the scraping force. The rotating ring can ensure the coaxial positioning and fixation of the device through elastic contact during operation, avoiding scraper deviation, so that the coking material can be efficiently peeled off and is not easy to leave residue. It solves the problems of traditional manual coking removal being difficult to penetrate and laborious to operate.

[0019] 2. This utility model, by setting a through hole, an air bladder, and an air tube, keeps the air bladder in a contracted state during the insertion stage, greatly reducing contact friction with the tube wall, making pushing more effortless. After reaching the descaling position, the air bladder inflates to form support, which not only replaces the continuous friction contact of the rubber ring, but also ensures stable centering of the device through uniform radial pressure. After descaling is completed, the air bladder quickly deflates and contracts, completely eliminating the resistance of the rubber ring's withdrawal, realizing low-resistance operation throughout the insertion, operation, and withdrawal process, fundamentally solving the problem of difficult propulsion caused by excessive friction in traditional rubber ring solutions. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a half-sectional structural diagram of the support mechanism of this utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the rotating frame of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the airbag of this utility model.

[0024] In the diagram: 1. Outer tube; 2. Scraper; 3. Rotating frame; 4. Threaded rod; 5. Support; 6. Rotating ring; 7. Rubber ring; 8. Roller; 9. First handle; 10. Second handle; 11. Through hole; 12. Airbag; 121. Air tube. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] Example 1:

[0027] A converter pulverized coal injection lance anti-clogging device, such as Figures 1-4 As shown, the device includes an outer tube 1, with a scraper 2 rotatably connected to one end of the outer tube 1. One end of the scraper 2 has a conical structure, and a rotating frame 3 is rotatably connected to one side of the scraper 2. A threaded rod 4 is rotatably connected to one end of the rotating frame 3. A support 5 is installed inside the outer tube 1, and the support 5 and the threaded rod 4 are threadedly connected. The outer tube 1 is a hollow metal tube with a rotating interface at the front end, serving as the main body of the device to support internal components. The scraper 2 is hinged to the end of the outer tube, and its working end is designed with a conical structure. The conical tip facilitates passage through the inside of the coal injection gun. After unfolding, the side becomes a scraping working surface for scraping. The rotating frame 3 is a connecting rod, with one end hinged to the scraper and the other end hinged to the threaded rod. The scraper angle can be adjusted from 0 to 90° by changing the distance between points A and B. The threaded rod 4 is engaged with the threaded hole of the support 5, generating axial displacement with each rotation, thus achieving precise control of the scraper angle. The support 5 is a support frame fixed to the inner wall of the outer tube, with a threaded hole in the center to convert the rotational motion of the threaded rod into linear motion, while preventing the rod from swaying.

[0028] See Figure 1 , Figure 2 and Figure 3 The outer tube 1 is fitted with a rotating ring 6. A rubber ring 7 is fixedly connected to the outer surface of the rotating ring 6. The rotating ring 6 has a ring structure and achieves relative rotation with the outer tube through the roller 8. The rubber ring 7 is made of silicone rubber. The annular convex section generates radial elastic force to compensate for the ellipticity error of the pipe. The rubber ring 7 can also provide support, so that the outer tube does not have to contact the inner wall of the coal injection gun when rotating, thus reducing scratching.

[0029] See Figure 1 , Figure 2 and Figure 3The inner ring of the rotating ring 6 is provided with several rollers 8. There are two rotating rings 6, and the two rotating rings 6 play a supporting role. The rollers 8 are multiple sets of evenly distributed rollers. Each roller is installed through a bearing. The distance between the front ring and the rear ring can form a statically determinate support structure. The double ring support provides reliable support for the outer tube, and the rollers reduce sliding friction.

[0030] See Figure 1 , Figure 2 and Figure 3 One end of the outer tube 1 is fixedly connected to a first handle 9, and the other end of the threaded rod 4 is fixedly connected to a second handle 10. The first handle 9 is a star-shaped wheel structure with a knurled surface and is welded to the end of the outer tube. The second handle 10 is also a star-shaped wheel structure with a knurled surface to improve the grip.

[0031] The implementation principle of this utility model is as follows: First, the operator rotates the threaded rod 4 through the second handle 10, and the rotating frame 3 is linked to adjust the scraper 2 to an inclined state. The operator holds the first handle 9 and pushes the outer tube 1 along the axial direction of the coal injection gun pipe while rotating. When the front end of the outer tube 1 reaches the nozzle end of the coal injection gun, there is a display mark on the outer surface of the outer tube 1, which can indicate that the sliding position is in place.

[0032] During this process, the rubber ring 7 always maintains contact with the pipe wall to ensure that the center of the outer pipe 1 and the center of the coal injection gun are coaxial;

[0033] Once in position, rotate the second handle 10 in the opposite direction to retract the threaded rod 4 and adjust the scraper 2 to a vertical position. The operator continues to rotate the first handle 9 to drive the outer tube 1 to rotate as a whole. At this time, the outer tube 1 is supported by the rotating ring 6 and the roller 8 reduces the rotational resistance caused by the traditional outer tube directly contacting the coal injection gun. The vertical scraper 2 is close to the end of the tube and scrapes off the coking material.

[0034] After decoking is completed, the scraper 2 is readjusted to an inclined position, and the outer tube 1 is pulled in the opposite direction to slowly exit the pipeline.

[0035] Example 2:

[0036] See Figure 4 One of the rotating rings 6 has a through hole 11. An air bag 12 is fixedly connected to the outer surface of the rotating ring 6. The through hole 11 is a through hole with a polytetrafluoroethylene bushing on the inner wall, which serves as a guide channel for the air tube 121. The air bag 12 can expand after being inflated. The contact surface is provided with anti-slip texture. When the air bag is not inflated, there is a gap between it and the tube wall to reduce sliding resistance. After being inflated, it can fix the outer tube 1 to the current position.

[0037] See Figure 4One of the airbags 12 has an air tube 121 that passes through the through hole 11 and is connected to an external air source. The other airbag 12 has an air tube 121 that is connected to an external air source. The air tube 121 is a double-layer steel wire braided hose. The front airbag air tube passes through the through hole and is arranged parallel to the outer wall of the outer tube. The rear airbag air tube extends directly to the end of the tube. It has a quick-plug dual-way air valve and is equipped with an overpressure protection device.

[0038] The implementation principle of this utility model is as follows: First, the airbag 12 is connected to an external air pump through the air pipe 121 and is initially kept in a deflated state. The roller 8 on the rotating ring 6 rolls in contact with the pipe wall, which reduces sliding friction in conjunction with the deflated airbag 12. The air pump inflates the two airbags 12, increasing the outer diameter of the airbags to make them in close contact with the pipe wall, forming a positioning support. After the descaling is completed, the airbag 12 deflates and returns to a contracted state, avoiding the problem of the rubber ring being difficult to push and remove during the pushing process.

[0039] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A converter coal injection gun anti-blocking device, characterized in that: The utility model provides an external tube (1), one end of external tube (1) is rotatably connected with scraper (2), one end of scraper (2) is provided with the structure of taper, one side of scraper (2) is rotatably connected with rotating frame (3), one end of rotating frame (3) is rotatably connected with threaded rod (4), the inside of external tube (1) is provided with support (5), support (5) and threaded rod (4) are threadedly connected.

2. The anti-blocking device for the coal injection lance of the converter as claimed in claim 1, characterized in that: The outside of external tube (1) is sleeved with rotating ring (6), the outer surface of rotating ring (6) is fixedly connected with rubber ring (7).

3. The anti-blocking device for the coal injection lance of the converter as claimed in claim 2, characterized in that: The inner ring of rotating ring (6) is provided with several rollers (8), rotating ring (6) is provided with two, and two rotating ring (6) plays the role of support.

4. The anti-blocking device for a coal injection lance of a converter as claimed in claim 1, characterized in that: One end of external tube (1) is fixedly connected with first handle (9), the other end of threaded rod (4) is fixedly connected with second handle (10).

5. The anti-blocking device for the coal injection lance of the converter as claimed in claim 2, characterized in that: One of rotating ring (6) is provided with through hole (11), the outer surface of rotating ring (6) is fixedly connected with air bag (12).

6. The anti-blocking device for a coal injection lance of a converter as claimed in claim 5, characterized in that: The air pipe (121) of one air bag (12) passes through through hole (11) and is communicated with external air source, and the air pipe (121) of another air bag (12) is communicated with external air source.

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