Prefabricated high-temperature-resistant anti-cracking blast furnace iron runner main runner

Abstract

The utility model provides a prefabricated high-temperature-resistant anti-cracking main runner of a blast furnace molten iron runner. The prefabricated high-temperature-resistant anti-cracking main runner comprises an inner runner and an outer runner, the inner ditch comprises a groove body, a skimmer, a first slag groove and an outlet pillow; the width of the groove body is gradually increased from the upper surface of the groove body to the lower surface of the groove body, the lower surface of the groove body is an arc-shaped surface, the outer groove comprises a base block and a cushion block, and the base block and the cushion block are spliced to form the outer groove; the outer groove is provided with a containing cavity, the inner groove is formed in the containing cavity, and the shape of the containing cavity is the same as that of the groove body; a second slag groove is formed in the position, corresponding to the first slag groove, of the outer ditch. The flow direction of molten iron is changed, the erosion effect generated by the molten iron is reduced, the service life is prolonged, the structure is stable, and the risk of breakage or deformation is reduced; the outer ditch capable of being spliced is adopted, in the using process, on-site grooving construction is not needed, the inner ditch is supported in a mode of splicing the outer ditch, using is convenient, the construction time is shortened, manpower waste is reduced, the inner ditch and the outer ditch are detachably spliced, and damage maintenance is also facilitated.

Description

Technical Field

[0001] This utility model relates to blast furnace molten iron channels, and more particularly to a prefabricated high-temperature resistant and crack-resistant main channel for blast furnace molten iron channels. Background Technology

[0002] The blast furnace molten iron trough is the channel connecting the blast furnace and the molten iron ladle. Its working environment is extremely harsh, constantly subjected to high temperatures, molten iron scouring, and chemical corrosion. The molten iron trough includes the main trough, slag trough, and iron trough. The function of the main trough is to separate the molten iron from the slag. The slag in the main trough enters the slag discharge trough (slag trough) from the top of the slag skimmer's beam, while the molten iron flows through the molten iron channel (iron trough) at the bottom of the slag skimmer's beam, thus achieving slag-iron separation.

[0003] The main channel of the iron slurry trench has a fast flow rate and high temperature, and is subjected to the combined action of slag and iron, making it more susceptible to corrosion from the molten iron. Existing main channels of iron slurry trenches are often made by direct casting of high-temperature resistant materials, which has poor strength and is prone to cracking, resulting in a short service life. Existing iron slurry trenches are often constructed by digging trenches underground and then constructing them on-site, which is complicated and time-consuming. When the main channel is damaged, it is also inconvenient to dismantle and replace it. Summary of the Invention

[0004] To address the above problems, this utility model provides a prefabricated high-temperature resistant and crack-resistant main channel for blast furnace molten iron troughs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A prefabricated high-temperature resistant and crack-resistant blast furnace molten iron trough main channel, comprising an inner channel and an outer channel;

[0007] The inner channel includes a tank body, a skimmer, a first slag trough, and an outlet pillow; the width of the tank body gradually increases from the upper surface to the lower surface of the tank body, the lower surface of the tank body is an arc-shaped surface, and the upper surface of the tank body is provided with a groove; the groove is arranged along the length direction of the tank body; the groove includes an inlet end and an outlet end, the skimmer is arranged laterally in the middle of the groove, the first slag trough is arranged above the tank body and connected to the groove, the first slag trough is arranged between the skimmer and the inlet end, the first slag trough is close to the skimmer, and the outlet pillow is arranged laterally at the outlet end of the groove;

[0008] The outer groove includes a base block and a pad block. The base block includes a base and a side plate. The base includes a first groove. The lower end of the side plate is fixed to the left and right sides of the base. The pad block is disposed on the base. The lower end of the pad block abuts against the upper surface of the two side walls of the first groove. The upper surface of the pad block is flush with the upper end of the side plate. The pad block is inclined outward from top to bottom towards the side of the base.

[0009] The base block and the cushion block are spliced to form the outer groove; the outer groove has a cavity, the inner groove is arranged in the cavity, the shape of the cavity is the same as the outer shape of the groove body; the outer groove is provided with a second slag groove corresponding to the position of the first slag groove.

[0010] Further, the groove body is provided with a support framework, the support framework comprises a support frame and a connecting rod, the support frame is a closed frame, adjacent support frames are connected through connecting rods, and the support frames are equidistantly arranged along the length direction of the groove body.

[0011] Further, the groove is a trapezoidal groove, and the inner wall of the groove has a protective layer.

[0012] Further, the support frame has a V-shaped frame with an opening facing downward on both sides; two side rods close to the groove are connected through a first supporting rod; and two side rods away from the groove are connected through a second supporting rod.

[0013] Further, the side plate is provided with a positioning groove, the opening of the positioning groove faces upward, the cushion block is provided with a positioning block corresponding to the outer side of the side plate, the positioning block is installed and placed in the positioning groove, and the upper end surface of the positioning block is flush with the upper surface of the cushion block.

[0014] Further, the cushion block has two, and the positioning block of one of the cushion blocks is arranged at the first slag groove, and the second slag groove is arranged on the upper surface of the positioning block.

[0015] Further, the groove bottom of the first recess is arc-shaped, the lower end of the cushion block has a supporting block, the supporting block abuts against the base, the supporting block and the side wall of the first recess form a stepped structure, and the bottom of the groove body is provided with corresponding stepped clamping grooves on both sides.

[0016] Further, the upper surface of the cushion block is fixed with a lifting ring.

[0017] Further, a residual hole is arranged, the residual hole is arranged at the lower part of the side wall of the groove body, the residual hole is close to the outlet pillow, the cushion block and the side plate are provided with through holes corresponding to the positions of the residual holes, and the through holes are arranged in alignment with the residual holes.

[0018] Compared with the prior art, the utility model have the advantages that (1) the utility model discloses the export pillow of the export end transverse of the groove of the inner ditch, guarantees the strength of the inner ditch through the export pillow, sets up the transverse shelter in the flowing molten iron flow, can change the flow direction of the molten iron, reduces the erosion effect that the molten iron produces to the side wall or the groove bottom of the groove, prolongs the life. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the front view of the prefabricated high temperature resistant anti -cracking blast furnace molten iron ditch main ditch of the utility model;

[0020] Figure 2 It is the three -dimensional structure schematic view of the inner ditch of the prefabricated high temperature resistant anti -cracking blast furnace molten iron ditch main ditch of the utility model;

[0021] Figure 3 It is the plan view of the inner ditch of the prefabricated high temperature resistant anti -cracking blast furnace molten iron ditch main ditch of the utility model;

[0022] Figure 4 It is the A-A section view of the prefabricated high temperature resistant anti -cracking blast furnace molten iron ditch main ditch of the utility model;

[0023] Figure 5 It is the three -dimensional structure schematic view of the base block and the cushion block of the outer ditch of the utility model. DETAILED DESCRIPTION

[0024] In order to have further understanding to the purpose, the structure, the characteristics and the function of the utility model, will be described in detail as follows with the example.

[0025] Please combine with referring to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 And Figure 5 , a prefabricated high temperature resistant anti -cracking blast furnace molten iron ditch main ditch of the utility model one embodiment, including inner ditch 100 and outer ditch 200.

[0026] The inner groove 100 comprises a groove body 110, a skimmer 120, a first slag groove 130, and an outlet pillow 140; the width of the groove body 110 gradually increases from the upper surface of the groove body 110 to the lower surface of the groove body 110, the lower surface of the groove body 110 is an arc surface, and the upper surface of the groove body 110 is provided with a groove 111; the groove 111 is arranged along the length direction of the groove body 110; the groove 111 comprises an inlet end 112 and an outlet end 113; the skimmer 120 is transversely arranged at the middle of the groove 111, and the skimmer 120 is a partition plate, the two ends of the partition plate are respectively connected to the inner walls on both sides of the groove, and the lower part of the skimmer 120 is spaced apart from the bottom of the groove 111 to ensure that the lower part of the skimmer 120 has a gap with the bottom of the groove 111; the molten iron flows through the skimmer 120, and the waste slag floating above can be removed; the molten iron flows from the bottom of the skimmer 120 to the outlet end and is then discharged from the main groove; the first slag groove 130 is arranged above the groove body 110 and is connected to the groove 111; the first slag groove 130 is arranged between the skimmer 120 and the inlet end 112, and the first slag groove 130 is close to the skimmer 120; the waste slag blocked by the skimmer 120 can leave the inner groove through the first slag groove 130. The outlet pillow 140 is transversely arranged at the outlet end 113 of the groove 111; the side surface of the outlet pillow 140 facing the skimmer 120 is a slope surface. Through the outlet pillow 140, the strength of the inner groove 100 is ensured, a transverse barrier is arranged in the flowing molten iron flow, the flow direction of the molten iron is changed, the erosion effect of the molten iron on the side wall of the groove or the bottom of the groove is reduced, and the service life is prolonged. The structure of the groove body 110 being large at the top and small at the bottom ensures the strength of the groove body 110, the two side walls are inclined inward from bottom to top, the support strength of the two side walls is ensured, and the risk of fracture or deformation is reduced; and the bottom is designed in an arc shape, has higher structural rigidity, and better resists external force caused by the impact of high-flow-rate molten iron, has strong bearing capacity, avoids deformation, ensures the mechanical strength of the inner groove, and prolongs the service life of the inner groove.

[0027] The outer groove 200 comprises a base block 210 and a cushion block 220; the base block 210 comprises a base 211 and a side plate 212; the base 211 comprises a first groove 213; the lower end of the side plate 212 is fixed to the left and right sides of the base 211; the cushion block 220 is arranged on the base 210; the lower end of the cushion block 220 abuts against the upper surfaces of the groove walls on both sides of the first groove 213; the upper surface of the cushion block 220 is flush with the upper end of the side plate 212; and the side surface of the cushion block 220 facing the middle part of the base is inclined outward from top to bottom.

[0028] The base block 210 and the cushion block 220 are spliced to form the outer groove; the outer groove 200 has a cavity 201, the inner groove 100 is arranged in the cavity 201, and the shape of the cavity 201 is the same as the outer shape of the groove body 100; the splicable outer groove 200 is used, in use, without on-site trench construction, the inner groove is supported by splicing the outer groove 200, convenient to use, shortens the construction time, reduces the waste of manpower, and the inner groove 100 and the outer groove 200 are detachably spliced, which is also beneficial to damage maintenance.

[0029] The outer groove 200 is provided with a second slag chute 230 corresponding to the position of the first slag chute 130. The second slag chute 230 is connected with the first slag chute 130 to guide and discharge waste slag out of the inner groove.

[0030] The groove body 100 is provided with a support framework 300, the support framework 300 comprises a support frame 310 and a connecting rod 320, the support frame 310 is a closed frame, adjacent support frames 310 are connected through connecting rods 320, the connecting rod 320 is perpendicular to the plane where the support frame 310 is located, the connecting rod 320 is arranged along the length direction of the groove body 100, and the support frames 310 are equidistantly arranged along the length direction of the groove body 100. By arranging the support framework 300, the mechanical strength of the inner groove 100 is ensured, the inner groove 100 is prevented from being deformed under the impact of molten iron, the anti-deformation ability, durability and stability of the structure of the inner groove are improved, the inner groove is prevented from being deformed and cracked, and the service life is prolonged.

[0031] The groove 111 is a trapezoidal groove, and the inner wall of the groove 111 has a protective layer 400. The protective layer 400 can be a protective lining brick layer attached or a high-temperature resistant coating layer coated, and the high-temperature resistant coating can be organic silicon high-temperature resistant paint, graphite coating, aluminum silicon coating, etc. The anti-erosion ability and high-temperature resistance of the inner wall of the groove are improved, the inclined wall design of the trapezoidal groove provides stronger anti-lateral pressure, the structure is stable, and the connection between the groove wall and the groove bottom is prevented from being cracked.

[0032] The support frame 310 has V-shaped frames 311 with openings facing downward on both sides; the side rods of the two V-shaped frames 311 close to the groove 111 are connected through first support rods 312; and the side rods of the two V-shaped frames 311 away from the groove 111 are connected through second support rods 313. The two-side V-shaped frame 311 structure ensures that the structure of the support frame 310 on both sides is stable and not easy to be deformed, the support strength is large, the anti-deformation ability of the inner groove is improved, and the anti-lateral pressure ability of the side wall of the groove of the inner groove is improved, so that the connection between the groove wall and the groove bottom of the groove is prevented from being cracked.

[0033] The side plate 212 is provided with a positioning groove 240, the opening of the positioning groove 240 faces upwards, the cushion block 220 is correspondingly provided with a positioning block 250 facing the outer side of the side plate, the positioning block 250 is installed and placed in the positioning groove 240, and the upper end surface of the positioning block 250 is flush with the upper surface of the cushion block 220. Convenient and fast positioning installation, convenient to use, convenient and stable splicing of the outer groove.

[0034] The cushion block 220 has two, and the positioning block 250 of one of the cushion blocks is correspondingly arranged at the first slag groove. The second slag groove 230 is arranged on the upper surface of the positioning block 250. The positioning block 250 is arranged at the area of the first slag groove, and the second slag groove 230 is arranged on the positioning block 250 on the side, so that the waste slag is conveniently discharged, the second slag groove 230 is prevented from being spliced by the recesses arranged on the cushion block and the top of the side plate, the second slag groove 230 is prevented from having a gap in splicing, the waste slag is prevented from contacting the side plate, the waste slag is prevented from eroding the gap between the side plate and the cushion block, and the service life of the outer groove 200 is ensured.

[0035] The groove bottom of the first groove 213 is arc-shaped, the lower end of the cushion block 220 has a supporting block 221, the supporting block 221 abuts against the base 211, the supporting block 221 and the side wall of the first groove 213 form a stepped structure, and the two sides of the bottom of the groove body 100 are provided with corresponding stepped clamping grooves 150. When being installed, the limiting installation can be realized, the inner groove is more stable when being arranged in the spliced outer groove, assembly and splicing are more convenient, when being disassembled, the inner groove does not tilt to the side of the disassembled cushion block 220, and disassembly and replacement are facilitated.

[0036] A lifting ring 222 is fixed to the upper surface of the cushion block 220. A force application point is provided, hoisting use and disassembly are facilitated, installation and disassembly and replacement of the cushion block are facilitated, and maintenance is facilitated.

[0037] A residual hole 500 is further arranged, the residual hole 500 is arranged at the lower part of the side wall of the groove body 100, the residual hole 500 is close to the outlet pillow 140, the cushion block 220 and the side plate 212 are correspondingly provided with through holes 600 at positions corresponding to the residual hole, and the through holes 600 are arranged in alignment with the residual hole 500. When being used, the residual hole 500 is blocked, when residual molten iron needs to be discharged after ending, the residual hole 500 is opened, residual molten iron is discharged along the residual hole through the corresponding through hole 600, and residual molten iron in the inner groove is avoided.

[0038] The utility model has been described by the above related embodiments, however, the above embodiments are only examples for implementing the utility model. It must be pointed out that the disclosed embodiments do not limit the scope of the utility model. On the contrary, changes and decorations made within the spirit and scope of the utility model are all within the patent protection scope of the utility model.

Claims

1. A prefabricated high-temperature resistant and crack-resistant main channel for blast furnace molten iron trough, characterized in that: Includes inner and outer ditches; The inner channel includes a tank body, a skimmer, a first slag trough, and an outlet pillow; the width of the tank body gradually increases from the upper surface to the lower surface of the tank body, the lower surface of the tank body is an arc-shaped surface, and the upper surface of the tank body is provided with a groove; the groove is arranged along the length direction of the tank body; the groove includes an inlet end and an outlet end, the skimmer is arranged laterally in the middle of the groove, the first slag trough is arranged above the tank body and connected to the groove, the first slag trough is arranged between the skimmer and the inlet end, the first slag trough is close to the skimmer, and the outlet pillow is arranged laterally at the outlet end of the groove; The outer groove includes a base block and a pad block, which are spliced ​​together to form the outer groove; the outer groove has a cavity, and the inner groove is disposed in the cavity, the shape of which is the same as the outer shape of the tank body; a second slag trough is provided in the outer groove corresponding to the position of the first slag trough.

2. The prefabricated high-temperature resistant and crack-resistant blast furnace molten iron trough main channel as described in claim 1, characterized in that: The base block includes a base and a side plate. The base includes a first groove. The lower end of the side plate is fixed to the left and right sides of the base. The pad is disposed on the base. The lower end of the pad abuts against the upper surface of the two side groove walls of the first groove. The upper surface of the pad is flush with the upper end of the side plate. The pad is inclined outward from top to bottom towards the side of the center of the base.

3. The prefabricated high-temperature resistant and crack-resistant blast furnace molten iron trough main channel as described in claim 1, characterized in that: The tank is equipped with a support frame, which includes a support frame and connecting rods. The support frame is a closed frame, and adjacent support frames are connected by connecting rods. The support frames are equidistantly arranged along the length of the tank.

4. The prefabricated high-temperature resistant and crack-resistant blast furnace molten iron trough main channel as described in claim 1, characterized in that: The groove is a trapezoidal groove, and the inner wall of the groove has a protective layer.

5. The prefabricated high-temperature resistant and crack-resistant blast furnace molten iron trough main channel as described in claim 3, characterized in that: The support frame has V-shaped brackets with openings facing downwards on both sides; the side rods of the two V-shaped brackets near the groove are connected by a first support rod; the side rods of the two V-shaped brackets away from the groove are connected by a second support rod.

6. The prefabricated high-temperature resistant and crack-resistant blast furnace molten iron trough main channel as described in claim 2, characterized in that: The side plate is provided with a positioning groove with the opening facing upward. The pad is provided with a positioning block on the outer side of the side plate. The positioning block is installed in the positioning groove, and the upper end face of the positioning block is flush with the upper surface of the pad.

7. The prefabricated high-temperature resistant and crack-resistant blast furnace molten iron trough main channel as described in claim 6, characterized in that: There are two pads, one of which has a positioning block corresponding to the first slag trough, and the second slag trough is located on the upper surface of the positioning block.

8. The prefabricated high-temperature resistant and crack-resistant blast furnace molten iron trough main channel as described in claim 2, characterized in that: The bottom of the first groove is arc-shaped, the lower end of the pad has a support block, the support block abuts against the base, the support block and the side wall of the first groove form a stepped structure, and the bottom of the groove has corresponding stepped slots on both sides.

9. The prefabricated high-temperature resistant and crack-resistant blast furnace molten iron trough main channel as described in claim 1, characterized in that: A lifting ring is fixed to the upper surface of the pad.

10. The prefabricated high-temperature resistant and crack-resistant blast furnace molten iron trough main channel as described in claim 2, characterized in that: It is also provided with a discharge hole, which is located on the lower part of the side wall of the tank and close to the outlet pillow. The pad and the side plate are provided with through holes corresponding to the position of the discharge hole, and the through holes are aligned with the discharge hole.

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