Automatic cleaning device for mud ramming mechanism of blast furnace

Abstract

The utility model relates to the technical field of blast furnace mud guns, in particular to an automatic cleaning device of a blast furnace mud ramming mechanism, which comprises a mud gun shell, a mud containing shell fixedly connected to the right end of the mud gun shell, a gun nozzle fixedly connected to the right end of the mud containing shell, a mud cavity serving as an inner cavity of the mud containing shell, and an oil cylinder slidably connected to the interior of the mud gun shell and the interior of the mud cavity. A mud loading opening is formed in the side wall of the mud loading shell, and a mud filling funnel is mounted on the mud loading opening; a ring is arranged at the end, close to the clay loading shell, of the clay gun shell, and a supporting steel ring is installed in the ring. The end, close to the ring, of the clay gun shell is sleeved with a supporting sleeve. According to the mud making mechanism, automatic cleaning of stemming accumulated in the gun body of the mud making mechanism is achieved, the storage amount of the stemming near the oil cylinder is obviously reduced, normal operation of the mud making mechanism is guaranteed, and the service life of the mud making mechanism is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace mud guns, in particular to an automatic cleaning device for a blast furnace mud beating mechanism. Background Art

[0002] In the process of repairing the mud-beating mechanism of blast furnaces in recent years, we found that more and more mud was retained in the gun barrel, and key components such as the cylinder, piston rod, support steel ring, and copper ring were seriously damaged. After careful analysis, we found that the main reasons for the increase in the amount of mud residue were the following two aspects:

[0003] 1. The scraping copper ring and the inner wall of the mud chamber are damaged, resulting in mud turning over;

[0004] Mud reversal: This may appear to be caused by damage to the scraping copper ring, but a closer look reveals the cause is the low hardness and poor finish of the mud chamber inner wall. We tested the hardness of some old mud chamber inner walls on site and found that the hardness was generally below 250HB. The surface was severely scratched, causing the mud plug ring to also be severely scratched. A large amount of mud cannon mud can be returned to the side of the oil cylinder through the gap between the two damaged surfaces, causing mud to be carried back into the cannon. Second, the mud cannon mud can be directly dropped onto the oil cylinder and carried back into the cannon.

[0005] To reduce the workload of on-site operators and improve automation, we modified the mud filling method of the mud-beating mechanism. An automatic loader was installed, switching from manual filling to automatic filling. A mud-collecting funnel was also installed at the filling port. This funnel significantly increased the amount of residual mud inside the mud-beating mechanism. The upper surface of the funnel was approximately two meters above the ground, making it difficult for operators to monitor the amount of mud inside. The amount often exceeded the filling port, leaving some mud outside the mud chamber. When the hydraulic cylinder was activated, the mud inside the chamber was pushed into the mud chamber, while any mud that exceeded the filling port fell onto the outer wall of the cylinder. When the cylinder retracted, this mud was carried back to the support steel and copper rings, where it was gradually squeezed toward the cylinder. Combined with the limitations of manual cleaning, this resulted in a continuous accumulation of mud inside the gun barrel. Ultimately, the gun mud near the oil cylinder will scratch the piston rod and cause oil leakage. The gun mud near the supporting steel ring and supporting copper ring will affect the formation of the oil cylinder. Both situations will affect the normal use of the mud-beating mechanism. Therefore, how to improve the storage of gun mud in the gun barrel is a very urgent problem to be solved. Utility Model Content

[0006] The utility model provides an automatic cleaning device for a blast furnace mud beating mechanism in order to solve the problem that excessive gun mud is stored in a gun barrel of an existing mud beating mechanism and affects the use of the mud beating mechanism.

[0007] The utility model is realized by adopting the following technical solutions:

[0008] An automatic cleaning device for a blast furnace mud-beating mechanism comprises a mud gun housing, a mud-loading housing fixedly connected to the right end of the mud gun housing, a gun nozzle fixedly connected to the right end of the mud-loading housing, an inner cavity of the mud-loading housing being a mud cavity, an oil cylinder slidably connected to the interior of the mud gun housing and the interior of the mud cavity, a mud-loading port being provided on the side wall of the mud-loading housing, a mud-filling funnel being installed on the mud-loading port; a ring being provided at the end of the mud gun housing near the mud-loading housing, a support steel ring being installed inside the ring; a support sleeve being sleeved at the end of the mud gun housing near the ring;

[0009] The supporting steel ring includes a basic steel ring fixedly connected to the side wall of the ring, and a plurality of supporting diversion components are fixedly installed on the inner side wall of the basic steel ring along the circumferential direction, and a plurality of diversion ports are opened on the side wall of the basic steel ring along the circumferential direction, and the diversion ports and the supporting diversion components are staggered; a mud outlet matching the diversion port is opened on the side wall of the mud gun shell.

[0010] Furthermore, the support diversion assembly includes an inverted V-shaped support diversion plate, a V-shaped support rib is fixedly connected to the interior of the support diversion plate, and both ends of the support diversion plate are respectively connected to two adjacent diversion ports.

[0011] Furthermore, the right end of the oil cylinder is fixedly connected to the outer platform at the bottom of the cylinder, the right end of the outer platform at the bottom of the cylinder is fixedly connected to the mud plug, the outer end of the mud plug is fixedly connected to the mud scraper ring, and the side end of the mud scraper ring is in sliding contact with the side wall of the mud chamber, and the right end of the mud plug is fixedly connected to the mud scraper plate.

[0012] Furthermore, the inner side wall of the mud-containing shell is nitrided.

[0013] The utility model has a reasonable and reliable structural design, realizes automatic cleaning of gun mud accumulated in the gun body of the mud beating mechanism, significantly reduces the storage amount of gun mud near the oil cylinder, ensures the normal operation of the mud beating mechanism, and extends the service life of the mud beating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] Figure 2 It is a schematic diagram of the motion state of the utility model when the oil cylinder moves forward after filling with mud.

[0016] Figure 3 It is a schematic diagram of the motion state of the utility model when the oil cylinder returns after mud beating is completed.

[0017] Figure 4 It is a structural schematic diagram of the support steel ring in the utility model.

[0018] Figure 5 It is a schematic diagram of the planar structure of the supporting steel ring in the utility model.

[0019] Figure 6 It is a structural diagram of the supporting diverter plate in the utility model.

[0020] Figure 7 It is a structural diagram of the supporting rib in the utility model.

[0021] In the figure: 1-mud gun shell, 2-mud loading shell, 3-gun nozzle, 4-mud chamber, 5-oil cylinder, 6-mud loading port, 7-mud filling funnel, 8-ring, 9-support steel ring, 10-support sleeve, 11-foundation steel ring, 12-diverter port, 13-support diverter plate, 14-support rib plate, 15-cylinder bottom outer platform, 16-mud plug, 17-mud scraper ring, 18-mud scraper plate, 19-gun mud.

[0022] It should be noted that the attached Figure 4 ~Attached Figure 7 The units of the numbers shown are all mm. DETAILED DESCRIPTION

[0023] An automatic cleaning device for a blast furnace mud-beating mechanism, as shown in the attached Figure 1 ~Attached Figure 7 As shown, it includes a mud gun shell 1, the right end of the mud gun shell 1 is fixedly connected to a mud loading shell 2, the right end of the mud loading shell 2 is fixedly connected to a gun nozzle 3, the inner cavity of the mud loading shell 2 is a mud cavity 4, the interior of the mud gun shell 1 and the interior of the mud cavity 4 are slidably connected to an oil cylinder 5, a mud loading port 6 is opened on the side wall of the mud loading shell 2, and a mud filling funnel 7 is installed on the mud loading port 6; a ring 8 is opened at the end of the mud gun shell 1 near the mud loading shell 2, and a support steel ring 9 is installed inside the ring 8; a support sleeve 10 is sleeved on the end of the mud gun shell 1 near the ring 8;

[0024] The supporting steel ring 9 includes a basic steel ring 11 fixedly connected to the side wall of the ring 8, and a plurality of supporting diversion components are fixedly installed on the inner side wall of the basic steel ring 11 along the circumferential direction, and a plurality of diversion ports 12 are opened on the side wall of the basic steel ring 11 along the circumferential direction, and the diversion ports 12 are staggered with the supporting diversion components; a mud outlet matching the diversion port 12 is opened on the side wall of the mud gun housing 1.

[0025] As attached Figure 1 As shown, the support diversion assembly includes an inverted V-shaped support diversion plate 13, the interior of the support diversion plate 13 is fixedly connected with a V-shaped support rib 14, and the two ends of the support diversion plate 13 are respectively connected to the two adjacent diversion ports 12.

[0026] When using this device, after starting the oil cylinder, the gun mud 19 in the mud filling funnel 7 is pushed into the mud cavity 4, and the gun mud 19 exceeding the mud filling port falls on the outer wall of the oil cylinder 5. When the oil cylinder 5 is retracted, this part of the gun mud 19 is brought back to the position of the support steel ring 9 and the support sleeve 10, and then is squeezed to the vicinity of the oil cylinder 5 little by little, causing the gun mud 19 in the gun body to accumulate more and more. At this time, the accumulated gun mud 19 is squeezed into the adjacent diversion port 12 by the inverted V-shaped support diverter plate 13, and discharged from the mud beating mechanism through the diversion port 12 and the mud outlet opened on the mud gun shell 1. Since multiple inverted V-shaped support diverter plates 13 and multiple diversion ports 12 form a channel, the accumulated gun mud 19 can be discharged along the channel, and there is no problem of mud accumulation in dead corners. It not only ensures the original reinforcement and support function of the support steel ring 9, but also forms a channel to facilitate the discharge of the accumulated gun mud 19.

[0027] As attached Figure 1 As shown, the right end of the oil cylinder 5 is fixedly connected to the cylinder bottom outer platform 15, the right end of the cylinder bottom outer platform 15 is fixedly connected to the mud plug 16, the outer end of the mud plug 16 is fixedly connected to the mud scraper ring 17, and the side end of the mud scraper ring 17 is in sliding contact with the side wall of the mud chamber 4, and the right end of the mud plug 16 is fixedly connected to the mud scraper plate 18.

[0028] The inner side wall of the mud-containing shell 2 is nitrided.

[0029] The nitriding treatment is performed to increase the surface hardness of the mud cavity 4, improve the wear resistance of the mud cavity 4, reduce friction resistance, and thus reduce the occurrence of mud turning.

[0030] In the specific implementation process, since the basic steel ring 11 is a circular steel plate with a diameter of 726 mm, an inverted V-shaped support diverter plate 13 is built inside the basic steel ring 11, and the shape of the support diverter plate 13 is an irregular parallelogram with an arc on one side, as shown in the attached figure. Figure 4 As shown, in order to further strengthen the supporting force of the diverter plate 13, a V-shaped supporting rib 14 is added.

[0031] In the description of the present invention, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic cleaning device for a blast furnace mud removal mechanism, characterized in that: The invention comprises a mud gun shell (1), wherein the right end of the mud gun shell (1) is fixedly connected to a mud loading shell (2), the right end of the mud loading shell (2) is fixedly connected to a gun nozzle (3), the inner cavity of the mud loading shell (2) is a mud cavity (4), the interior of the mud gun shell (1) and the interior of the mud cavity (4) are slidably connected to an oil cylinder (5), a mud loading port (6) is provided on the side wall of the mud loading shell (2), and a mud filling funnel (7) is installed on the mud loading port (6); a ring (8) is provided at the end of the mud gun shell (1) close to the mud loading shell (2), and a support steel ring (9) is installed inside the ring (8); a support sleeve (10) is sleeved on the end of the mud gun shell (1) close to the ring (8); The support steel ring (9) includes a base steel ring (11) fixedly connected to the side wall of the ring (8), a plurality of support diversion components are fixedly installed on the inner side wall of the base steel ring (11) along the circumferential direction, and a plurality of diversion ports (12) are opened on the side wall of the base steel ring (11) along the circumferential direction, and the diversion ports (12) and the support diversion components are staggered; the side wall of the mud gun housing (1) is opened with a mud outlet matching the diversion port (12).

2. The automatic cleaning device for a blast furnace mud removal mechanism according to claim 1, characterized in that: The support diversion assembly comprises an inverted V-shaped support diversion plate (13), a V-shaped support rib plate (14) is fixedly connected to the interior of the support diversion plate (13), and two ends of the support diversion plate (13) are respectively connected to two adjacent diversion ports (12).

3. The automatic cleaning device for a blast furnace mud removal mechanism according to claim 1, characterized in that: The right end of the oil cylinder (5) is fixedly connected to a cylinder bottom outer platform (15), the right end of the cylinder bottom outer platform (15) is fixedly connected to a mud plug (16), the outer end of the mud plug (16) is fixedly connected to a mud scraper ring (17), and the side end of the mud scraper ring (17) is in sliding contact with the side wall of the mud chamber (4), and the right end of the mud plug (16) is fixedly connected to a mud scraper plate (18).

4. The automatic cleaning device for a blast furnace mud removal mechanism according to claim 2, characterized in that: The inner side wall of the mud-containing shell (2) is subjected to nitriding treatment.

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