Improved stokehole slag flushing water granulating plate mounting structure

Abstract

The utility model discloses an improved furnace-front slag flushing water granulation plate mounting structure. A bottom plate is arranged in a port of a granulation pipe frame, a circular opening is formed in the middle of the bottom plate, a step frame is arranged on the edge of the circular opening, a horseshoe-shaped clamping seat is fixedly connected to the outer side of the step frame, and inclined iron is inserted into the clamping seat; a circular granulating plate panel is arranged in the circular opening of the bottom plate; and a small hole group is formed in the circular granulating plate panel. The water leakage phenomenon on the periphery of the mounting surface is avoided, the panel can be quickly replaced, the structure is reasonable, the influence of water leakage and abrasion replacement on production can be effectively avoided, the maintenance rate of the blast furnace is greatly reduced, and smooth production is ensured.

Description

Technical Field

[0001] The utility model relates to slag flushing equipment in front of an iron-making blast furnace, in particular to an improved installation structure of a slag flushing water granulation plate in front of the furnace. Background Art

[0002] When the iron is tapped from a blast furnace, the slag is separated from the iron by a slag skimmer, and then flows through the lower slag ditch into the slag flushing ditch with high-pressure water, and finally into the water slag pool. Since the high-temperature slag reacts rapidly and vaporizes when it meets water, if the water pressure is not enough at this time, an explosion will occur, and an accident will occur. If the water pressure is too low, the slag cannot be quickly flushed away and granulated, and the slag cools and hardens, resulting in blockage of the slag flushing ditch. Therefore, it is necessary to control the water pressure through a granulator plate to meet the granulation needs. The slag granulation conditions require that the water pressure of the slag flushing water is about 0.3Pma and the flow rate is about 2000 cubic meters / hour. In order to meet the above conditions, a granulator box device is installed at the end of the slag flushing water pipe in the slag flushing ditch below the slag outlet of the slag ditch to adjust and control the water pressure and flow to ensure that the slag can be granulated normally. However, the granulator plate in the existing granulator box device is fixedly connected to the four sides of the square box by bolts. After a period of use, the fixing bolts are worn and corroded, making it very difficult to replace the granulator plate. Generally, it takes 8-10 hours to replace a granulator plate. At the same time, since the granulator plate is installed in a flat surface, it is difficult to seal the installation surface of the granulator plate with the box frame, which is prone to water leakage, affecting water pressure concentration, wasting more water resources, and causing wear of the granulator box, seriously affecting blast furnace production. Utility Model Content

[0003] In view of the above problems, the utility model provides an improved furnace front slag water granulating plate installation structure to solve the problems of water leakage in the granulator box and difficulty in replacing the granulating plate, improve the slag granulation effect, save water resources, and improve the production efficiency of the blast furnace.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions. An improved furnace front slag water granulation plate installation structure comprises a rectangular granulation tube frame, a bottom plate is arranged in the port of the granulation tube frame, a circular opening is arranged in the middle of the bottom plate, a step frame is arranged at the edge of the circular opening, a horseshoe-shaped clamping seat is fixedly connected to the outside of the step frame, and an inclined iron is inserted into the inner groove of the clamping seat; a circular granulation plate panel is installed in the circular opening of the bottom plate, and a group of small holes is arranged on the circular granulation plate panel.

[0005] Furthermore, the inner periphery of the circular opening of the circular granulated plate panel is slightly larger than the inner diameter of the slag flushing water pipe.

[0006] Furthermore, the outer diameter of the circular granulated board panel matches the inner diameter of the circular opening of the bottom plate.

[0007] Furthermore, the small holes in the small hole group are in a trumpet shape, with the small aperture end being the water inlet end, and are distributed in the middle of the board surface, and their distribution area is at least two-thirds of the board surface area.

[0008] Furthermore, a long strip water outlet is arranged above the small hole group on the circular granulated plate panel.

[0009] Furthermore, a semi-arc water outlet is arranged below the small hole group on the circular granulated plate panel.

[0010] The utility model is a latch-type installation structure, which prevents water leakage around the installation surface and can quickly replace the panel. The reasonable structure can effectively avoid the influence of water leakage and wear and tear replacement on production, greatly reduces the maintenance rate of the blast furnace and ensures the smooth progress of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the existing granulation box granulation plate;

[0012] Figure 2 It is a structural schematic diagram of the utility model;

[0013] Figure 3 yes Figure 2 Schematic diagram of the AA section structure;

[0014] Figure 4 It is an enlarged schematic diagram of the small hole group 61 on the circular granulated plate panel 6 in the utility model.

[0015] In the figure: 1. granulation tube frame, 2. square granulation plate panel, 3. bolts, 4. bottom plate, 5. step frame, 6. round granulation plate panel, 61. small hole group, 62. long strip water outlet, 63. semi-arc water outlet; 7. holder, 8. inclined iron, 9. slag flushing water pipe. DETAILED DESCRIPTION

[0016] The present invention is further described below with reference to the accompanying drawings and embodiments. Figures 2 to 4The improved installation structure of the granulating plate for slag flushing water in front of the furnace comprises a rectangular granulating tube frame 1, a bottom plate 4 is arranged in the port of the granulating tube frame 1, a circular opening is arranged in the middle of the bottom plate 4, and the inner periphery of the circular opening of the circular granulating plate panel 6 is slightly larger than the inner diameter of the slag flushing water pipe 9. A step frame 5 is arranged at the edge of the circular opening, a horseshoe-shaped clamping seat 7 is fixedly connected to the outer side of the step frame 5, and an inclined iron 7 is inserted into the inner groove of the clamping seat 7; a circular granulating plate panel 6 is arranged in the circular opening of the bottom plate 4, and the outer diameter of the circular granulating plate panel 6 matches the inner diameter of the circular opening of the bottom plate 4. A small hole group 61 is arranged on the circular granulating plate panel 6, and the small holes of the small hole group 61 are in the shape of a trumpet, and the small hole end is the water inlet end, and is distributed in the middle part of the plate surface, and its distribution area is at least two-thirds of the plate surface area. A long strip water outlet 62 is arranged above the small hole group 61 on the circular granulated plate panel 6 ; a semi-arc water outlet 63 is arranged below the small hole group 61 on the circular granulated plate panel 6 .

[0017] Embodiment: The utility model makes a granulation pipe frame 1 according to the diameter of the original granulation box. A bottom plate 4 is welded in the port of the frame 1 through a peripheral seal. A circular opening is arranged in the middle of the bottom plate 4, and a step frame 5 is arranged at the edge of the opening. The step frame 5 is lower than the plane of the bottom plate 4, and a horseshoe-shaped clamping seat 7 is fixedly welded on the outside. An inclined iron 7 is inserted in the inner groove of the clamping seat 7 to fix the granulation panel 6 to prevent the circular granulation panel 6 from falling off (such as Figure 2 The circular opening of the bottom plate 4 is 10 mm larger than the diameter of the step frame 5. A circular granulated plate panel 6 is installed in the circular opening of the bottom plate 4. The circular granulated plate panel 6 is provided with a group of small holes 61 for adjusting water pressure and flow. The small holes in the group of small holes 61 are trumpet-shaped radial holes (such as Figure 3 , Figure 4 As shown), the inner side is small and the outer side is large, which can increase the water pressure and maximize the water outlet area. A long strip water outlet 62 is provided above the small hole group 61 to ensure full coverage of the slag flushing water and prevent leakage in the water column of the small hole group 61, which may cause slag accumulation or insufficient granulation. Below the small hole group 61, a semi-arc water outlet is provided according to the semi-arc structure at the bottom of the slag flushing ditch to ensure the bottom water pressure so that the granulated slag can be flushed away in time. The inner diameter of the step frame 5 matches the outer diameter of the granulation panel 6, and the plug hole of the inclined iron 8 is 2mm deeper than the granulation panel 6 to ensure the effectiveness of the expansion of the inclined iron 7 pin. The circular opening of the bottom plate 4 is 10mm larger than the diameter of the step frame 5 to ensure that the granulation panel 6 is effectively blocked.

[0018] According to the manufactured rectangular frame 1, the periphery of the step frame 5 is evenly welded to the panel bottom plate 4, the granulated panel 6 is placed into the step frame 5, the inner surface is attached to the bottom plate 4, and the outer surface is driven into the inner groove pin eye of the holder 7 with an inclined iron 7 to fix the granulated panel 6 to prevent it from falling off.

[0019] The utility model installs a granulating pipe frame 1 at the outlet end of the slag flushing water pipe 9, thereby preventing water leakage around the installation surface. Because of the latch-type installation, it can be quickly replaced. Its reasonable structure can effectively avoid the influence of water leakage and wear and tear replacement on production, greatly reducing the maintenance rate of the blast furnace, improving the maintenance efficiency by 70%, and ensuring the smooth progress of production.

Claims

1. The improved furnace front slag water granulation plate installation structure includes a rectangular granulation pipe frame, characterized in that: A bottom plate is arranged in the port of the granulating tube frame, a circular opening is arranged in the middle of the bottom plate, a step frame is arranged at the edge of the circular opening, a horseshoe-shaped holder is fixedly connected to the outer side of the step frame, and an inclined iron is inserted into the inner groove of the holder; a circular granulating plate panel is installed in the circular opening of the bottom plate, and a group of small holes is arranged on the circular granulating plate panel.

2. The improved installation structure of the slag water granulating plate in front of the furnace according to claim 1 is characterized in that: The inner periphery of the circular opening of the circular granulated plate panel is slightly larger than the inner diameter of the slag flushing water pipe.

3. The improved installation structure of the slag water granulating plate in front of the furnace according to claim 1 is characterized in that: The outer diameter of the circular granulated board panel matches the inner diameter of the circular opening of the bottom plate.

4. The improved installation structure of the slag water granulating plate in front of the furnace according to claim 1 is characterized in that: The small holes in the small hole group are in a trumpet shape, with the small hole end being the water inlet end, and are distributed in the middle of the board surface, and the distribution area thereof is at least two-thirds of the board surface area.

5. The improved installation structure of the slag water granulating plate in front of the furnace according to claim 1 is characterized in that: A long strip water outlet is arranged above the small hole group on the circular granulated plate panel.

6. The improved installation structure of the slag water granulating plate in front of the furnace according to claim 1 is characterized in that: A semi-arc water outlet is arranged below the small hole group on the circular granulated plate panel.

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