Flame cleaning machine

Abstract

The utility model discloses a flame cleaning machine which solves the technical problem that in the prior art, slag is prone to being accumulated in a groove of a flame cleaning machine, and the service life of a purging pipe is affected. The flame cleaning machine is used for cleaning the surface of a plate blank and comprises an upper cleaning assembly used for cleaning the upper surface of the plate blank; the lower cleaning assembly is used for cleaning the lower surface of the plate blank and comprises a mounting plate, a mounting base and a plurality of burners, the mounting plate is provided with a plurality of positioning protrusions used for positioning the burners, and the burners are sequentially distributed in the width direction of the plate blank and connected to the mounting base through the mounting plate; a groove which is provided with an upward opening and penetrates in the width direction of a plate blank is defined by the burner, the mounting plate and the mounting base, and the multiple positioning protrusions are all located at the bottom of the groove. The isolation assembly comprises a bottom partition plate covering the groove bottom of the groove; the water spraying end of the water spraying pipe is used for spraying water to the bottom partition plate, and the water spraying pipe is installed on the installation foundation or the burner. According to the flame cleaning machine provided by the invention, slag accumulation in the groove is not easily caused, so that the service life of the purging pipe is prolonged.

Description

Technical Field

[0001] The present application belongs to the technical field of flame scraping machines, and in particular relates to a flame scraping machine. Background Art

[0002] The flame cleaning machine is a kind of equipment that uses flame to clean the slabs cut off from continuous casting in the working line in a hot state. The flame cleaning machine uses high-temperature flames to heat the head of the slab to about 900-1000° to melt it. At the same time, the slab moves forward and then uses high-pressure oxygen to contact the surface of the high-temperature slab to remove impurities on its surface. High-pressure water is then used to flush the slag in different directions generated during the flame cleaning process into the ditch, and finally it enters the cyclone pool for precipitation, and is picked up by the slag grabber and returned to steelmaking. After cleaning, impurities on the surface of the slab are removed, reaching the set thickness, and the four sides are flat and clean, and then sent to hot rolling for rolling. Generally, the flame cleaning machine opens the body every 20 slabs to clean the slab, clean the slag on the body, so as to maintain good cleaning quality and protect the preheating block of the burner.

[0003] In the related art, the lower cleaning component of the flame cleaning machine can clean the lower surface of the slab. The lower cleaning component is provided with a groove extending along the width direction of the slab. The opening of the groove faces upward, and the groove is located behind the burner. The bottom of the groove has a plurality of positioning protrusions for positioning the burner. The bottom of the groove is uneven, and the slag is not easily washed away by water after entering the groove, which easily causes slag accumulation, thereby burning the purge pipe located next to the groove, reducing the service life of the purge pipe. Summary of the invention

[0004] In order to solve the technical problem that the grooves of the existing flame cleaning machine are prone to slag accumulation, which affects the service life of the purge pipe, the present application provides a flame cleaning machine.

[0005] The present application provides a flame cleaning machine for cleaning the surface of a slab, comprising:

[0006] An upper cleaning assembly, used for cleaning the upper surface of the slab;

[0007] A lower cleaning assembly, used for cleaning the lower surface of the slab, comprising a mounting plate, a mounting base and a plurality of burners, wherein the mounting plate is provided with a plurality of positioning protrusions for positioning the burners, wherein the plurality of burners are sequentially distributed along the width direction of the slab and connected to the mounting base through the mounting plate, wherein the burners, the mounting plate and the mounting base are combined to form a groove which is opened upward and passes through the width direction of the slab, and the plurality of positioning protrusions are all located at the bottom of the groove;

[0008] An isolation assembly, comprising a bottom partition covering the bottom of the groove;

[0009] A water spray pipe, the water spray end of which is used to spray water toward the bottom baffle, and the water spray pipe is installed on the installation base or the burner.

[0010] In some embodiments, the water spraying end of the water spraying pipe is located on one side of the groove along the width direction of the slab, and the bottom partition is inclined, and the upper end is close to the water spraying end.

[0011] In some embodiments, the angle between the bottom partition and the horizontal direction is 3°-5°.

[0012] In some embodiments, the flame cleaning machine also includes a side cleaning assembly for cleaning the side of the slab, the burner of the side cleaning assembly is located on one side of the burner of the lower cleaning assembly along the width direction of the slab, and the water spray end is close to the burner of the side cleaning assembly.

[0013] In some embodiments, the portion of the burner forming the groove side wall is provided with a plurality of notches for accommodating threaded connectors, and the isolation assembly further comprises a side partition connected to the bottom partition, and the side partition covers the plurality of notches.

[0014] In some embodiments, the bottom baffle is connected to the side baffle by welding, the bottom baffle is connected to the mounting base by spot welding, and the side baffle is connected to the burner by spot welding.

[0015] In some embodiments, the thickness of the bottom partition and the side partition are both 4-5 mm.

[0016] In some embodiments, the bottom partition plate and the side partition plates are both stainless steel plates.

[0017] In some embodiments, one end of the bottom partition plate and the side partition plate along the width direction of the slab protrudes out of the groove.

[0018] In some embodiments, a purge pipe for purging the shoe of the burner is further included, and the purge pipe is installed on the installation base and is located outside the groove.

[0019] The flame cleaning machine provided according to the embodiment of the present application is used to clean the surface of the slab, and includes an upper cleaning component, a lower cleaning component, an isolation component and a water spray pipe. The upper cleaning component is used to clean the upper surface of the slab; the lower cleaning component is used to clean the lower surface of the slab, and the lower cleaning component includes a mounting plate, a mounting base and a plurality of burners. The mounting plate is provided with a plurality of positioning protrusions for positioning the burners. The plurality of burners are distributed in sequence along the width direction of the slab and are connected to the mounting base through the mounting plate. The burners, the mounting plate and the mounting base are combined to form a groove with an opening facing upward and penetrating along the width direction of the slab, and the plurality of positioning protrusions are all located at the bottom of the groove; the isolation component includes a bottom baffle covering the bottom of the groove; the water spraying end of the water spray pipe is used to spray water to the bottom baffle, and the water spray pipe is installed on the mounting base or the burner.

[0020] The burner sprays flames to heat the slab, and at the same time, the burner sprays high-pressure oxygen to react with the surface of the slab to form slag. The slag will scatter into the groove formed by the burner, the mounting plate and the mounting foundation behind. Since the bottom of the groove is covered with a bottom baffle, the slag stays on the surface of the bottom baffle. The water pipe sprays water to the bottom baffle, and the water flow will flow on the bottom baffle. Since the groove is set through along the width of the slab, the flowing water will drive the slag to flow out of the groove on both sides along the width of the slab and fall into the ditch. Since the surface of the bottom baffle is flat, the water flow can easily carry the slag out of the groove and into the ditch, and it is not easy to cause slag accumulation in the groove, thereby solving the technical problem in the related art that the bottom of the groove is set to realize the positioning of the burner installation, the bottom of the groove is uneven, making it difficult for the slag to be discharged into the groove, and the slag accumulates in the groove, thereby burning the purge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a flame scrubber in one or more embodiments of the present application is shown.

[0022] Figure 2 A schematic diagram of assembling an insulating component and a burner in one or more embodiments of the present application is shown.

[0023] Description of reference numerals:

[0024] 100 - upper cleaning assembly, 110 - burner, 200 - lower cleaning assembly, 210 - burner, 211 - first block, 212 - second block, 213 - threaded connector, 214 - boot block, 220 - mounting plate, 230 - mounting base, 240 - groove.

[0025] 300-first side cleaning assembly, 400-second side cleaning assembly;

[0026] 500-isolation assembly, 510-bottom baffle, 520-side baffle, 700-purge pipe;

[0027] 800-Slab. DETAILED DESCRIPTION

[0028] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0029] The embodiment of the present application provides a flame cleaning machine for cleaning the surface of a slab. In the process of cleaning impurities on the surface of the slab, slag is not easily accumulated, thereby protecting a purge pipe and increasing the service life of the purge pipe.

[0030] See also Figure 1 as well as Figure 2 The flame cleaning machine provided in the embodiment of the present application includes an upper cleaning assembly 100, a lower cleaning assembly 200, an isolation assembly 500 and a water spray pipe (not shown in the figure). The upper cleaning assembly 100 is used to clean the upper surface of the slab 800; the lower cleaning assembly 200 is used to clean the lower surface of the slab 800, and the lower cleaning assembly 200 includes a mounting plate 220, a mounting base 230 and a plurality of burners 210. The mounting plate 220 is provided with a plurality of positioning protrusions for positioning the burners 210. The plurality of burners 210 are distributed in sequence along the width direction of the slab 800 and are connected to the mounting base 230 through the mounting plate 220. The burners 210, the mounting plate 220 and the mounting base 230 are combined to form a groove 240 that opens upward and passes through the width direction of the slab 800, and the plurality of positioning protrusions are all located at the bottom of the groove 240; the isolation assembly 500 includes a bottom partition 510 covering the bottom of the groove 240; the water spraying end of the water spraying pipe is used to spray water to the bottom partition, and the water spraying pipe is installed on the mounting base 230 or the burner 210.

[0031] The burner 210 sprays flames to heat the slab 800. At the same time, the burner 210 sprays high-pressure oxygen to react with the surface of the slab 800 to form slag. The slag will scatter into the groove 240 formed by the burner 210, the mounting plate 220 and the mounting base 230. Since the bottom of the groove 240 is covered with the bottom baffle 510, the slag stays on the surface of the bottom baffle 510. The water pipe sprays water to the bottom baffle 510, and the water flow will flow on the bottom baffle 510. Since the groove 240 is set through along the width direction of the slab 800, the flowing water will drive the slag to flow out to both sides of the groove 240 along the width direction of the slab 800 and fall into the ditch. Since the surface of the bottom baffle 510 is flat, the water flow can easily bring the slag out to the ditch. The technical problem in the related art that the bottom of the groove 240 is provided with a positioning protrusion for realizing burner installation positioning, and the groove bottom is uneven, making it difficult for slag to be discharged into the groove 240, and the slag accumulates in the groove 240, thereby burning the purge tube 700 is solved.

[0032] The installation base 230 may be a mounting plate, a mounting beam, or a mounting block, etc., without limitation.

[0033] In some embodiments, the water spray end of the water spray pipe is located on one side of the groove 240 along the width direction of the slab 800, and the bottom baffle 510 is inclined, and the upper end is close to the water spray end. The bottom baffle 510 is inclined, and gravity is used to make it easy for the water flow to carry the slag from the high side to the low side, thereby improving the slag cleaning effect. The pipe body of the water spray pipe can extend along the width direction of the slab 800, and the water spray end of the water spray pipe is located outside the groove 240 and has the same height as the groove 240.

[0034] In some embodiments, the angle between the bottom baffle 510 and the horizontal direction is 3°-5°, for example, 3.5°, 4°, and 4.5°. In some embodiments, the bottom baffle 510 can be made of stainless steel, which will not rust even under water scouring, and maintains a smooth surface of the bottom baffle 510, which facilitates water and slag to flow out of the groove 240. In other embodiments, the bottom baffle 510 is made of carbon steel, which can increase the replacement frequency and increase the water pressure of the water spray pipe to ensure the slag removal effect of the groove 240.

[0035] In some embodiments, see Figure 1 The flame cleaning machine also includes a side cleaning assembly for cleaning the side of the slab 800. The burner of the side cleaning assembly is located on one side of the burner 210 of the lower cleaning assembly 200 along the width direction of the slab 800, and the water spray end is close to the burner of the side cleaning assembly. Due to the provision of the side cleaning assembly, the side of the groove 240 close to the side cleaning assembly will be closed and slag cannot be discharged. By placing the water spray end close to the side cleaning assembly and the slag discharge side away from the side cleaning assembly, the slag can be discharged smoothly from the groove 240.

[0036] Generally speaking, the slab 800 has four surfaces that need to be cleaned, namely the upper surface, the lower surface and the two side surfaces. The two end surfaces of the slab 800 along the length direction do not need to be cleaned. In other embodiments, two side cleaning assemblies are provided. For the sake of convenience, the two side cleaning assemblies are respectively named as the first side cleaning assembly 300 and the second side cleaning assembly 400. Figure 1 The burner of the first side cleaning assembly 300 is located on one side of the burner 110 of the upper cleaning assembly 100 along the width direction of the slab 800, and the first side cleaning assembly 300 and the burner 110 of the upper cleaning assembly 100 are arranged in an L shape. The burner of the second side cleaning assembly 400 is located on one side of the burner 210 of the lower cleaning assembly 200 along the width direction of the slab 800, and the burner 110 of the second side cleaning assembly 400 and the upper cleaning assembly 100 are also arranged in an L shape. The first side cleaning assembly 300 and the second side cleaning assembly 400 are located on different sides of the width direction of the slab 800, so that the two L-shaped holes are buckled to form a cleaning hole, which can clean impurities on the four surfaces of the slab 800 located therein.

[0037] In some embodiments, see Figure 2 The portion of the burner 210 forming the side wall of the groove 240 is provided with a plurality of notches for accommodating the connecting threaded connector 213, that is, the burner 210 includes a first block 211 and a second block 212, the first block 211 is connected to the second block 212 via the threaded connector 213, the first block 211 is provided with a notch, the head of the threaded connector 213 is located in the notch, and the first block 211, the mounting plate 220 and the mounting base 230 together enclose the groove 240. The bottom surface of the notch of the first block 211 forms an effective surface that is tightly pressed against the head of the threaded connector 213, thereby improving the connection stability. However, the presence of the notch will increase the difficulty of slag discharge. In some embodiments, the isolation assembly 500 also includes a side partition 520 connected to the bottom partition 510, and the side partition 520 covers multiple notches. The side partition 520, the bottom partition 510 and the mounting base 230 together form a slag discharge trough for accommodating the passage of slag. Therefore, the slag enters the slag discharge trough and contacts the side partition 520 and the bottom partition 510. The surfaces of the side partition 520 and the bottom partition 510 are smooth, which facilitates the discharge of slag.

[0038] In some embodiments, the bottom baffle 510 and the side baffle 520 are welded, which is smoother than bolted connection and is convenient for discharging slag. In some embodiments, the bottom baffle 510 and the mounting base 230 are spot-welded, and the side baffle 520 and the burner 210 are spot-welded, which not only ensures the fixation of the bottom baffle 510 and the side baffle 520, but also facilitates removal, so as to facilitate the maintenance and replacement of the burner 210.

[0039] In some embodiments, the thickness of the bottom partition 510 and the side partition 520 are both 4-5 mm.

[0040] In some embodiments, the bottom partition 510 and the side partition 520 are both stainless steel plates. In some embodiments, the bottom partition 510 and the side partition 520 each include a plurality of sub-plates, which are sequentially connected along the width direction of the slab 800. The bottom partition 510 may be 2150 mm long and 50 mm wide.

[0041] In some embodiments, one end of the bottom baffle 510 and the side baffle 520 along the width direction of the slab 800 extends out of the groove 240 to achieve full coverage of the bottom and side surfaces of the groove 240, thereby achieving a better slag discharge effect.

[0042] In some embodiments, the flame sweeper further comprises a purge pipe 700 for purging the shoe 214 of the burner 210, the purge pipe 700 being mounted on the mounting base 230 and located outside the groove 240. The purge pipe 700 extends along the width direction of the slab 800 and is located on a side of the groove 240 away from the burner 210.

[0043] The boot block 214 is installed on the first block 211 and is used for contacting and rubbing with the lower side of the slab 800. The tube body of the purge tube 700 is provided with a plurality of through holes of the boot block 214 facing the nozzle. The purge tube 700 can blow air and water to the boot block 214 through the through holes to blow off the slag on the boot block 214.

[0044] In some embodiments, the nozzle, mounting plate 220 and mounting base 230 structures of the upper cleaning component 100 and the lower cleaning component 200 can be the same, and the upper cleaning component 100 and the lower cleaning component 200 are symmetrically arranged along the width direction of the slab 800, that is, the upper cleaning component 100 also has a groove 240, and the opening of the groove 240 faces downward.

[0045] The flame cleaning machine provided by the present application has at least the following advantages:

[0046] (1) By laying a bottom baffle 510 in the groove 240 formed by the burner 210, the mounting plate 220 and the mounting base 230, the uneven bottom of the groove 240 is isolated, and the slag falls on the smooth bottom baffle 510 and is easily discharged from the groove 240 along with the slag flushing water, which not only reduces the subsequent slag cleaning work, but also avoids the burning of the preheating block of the burner 210 and the purge pipe 700 by the high-temperature slag.

[0047] (2) It avoids the problem of slag accumulation causing slag to flow out of the groove 240 with the slag flushing water to block the center of the preheating nozzle and burn the preheating block, saving operation time and improving operation efficiency; the purge tube 700 is a copper tube, which costs 20,000 yuan per piece. It is estimated that at least 3 purge tubes 700 will be saved each year, totaling 60,000 yuan. The cost of each preheating block of the burner is 7,000 yuan, which reduces the number of abnormally burned preheating blocks by at least 20 per year, about 140,000 yuan, totaling 200,000 yuan. Due to the good slag discharge effect, 2 slag cleaners and 2 burner maintenance workers can be saved each year, a total of 4 people * 70,000 yuan / year = 280,000 yuan / year; the total amount of savings is calculated: 260,000 + 280,000 = 540,000 yuan / year.

[0048] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0049] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0050] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A flame cleaning machine for cleaning the surface of a slab, characterized in that: include: An upper cleaning assembly, used for cleaning the upper surface of the slab; A lower cleaning assembly, used for cleaning the lower surface of the slab, comprising a mounting plate, a mounting base and a plurality of burners, wherein the mounting plate is provided with a plurality of positioning protrusions for positioning the burners, wherein the plurality of burners are sequentially distributed along the width direction of the slab and connected to the mounting base through the mounting plate, wherein the burners, the mounting plate and the mounting base are combined to form a groove which is opened upward and passes through the width direction of the slab, and the plurality of positioning protrusions are all located at the bottom of the groove; An isolation assembly, comprising a bottom partition covering the bottom of the groove; A water spray pipe, the water spray end of which is used to spray water toward the bottom baffle, and the water spray pipe is installed on the installation base or the burner.

2. The flame scraping machine according to claim 1, characterized in that: The water spraying end of the water spraying pipe is located at one side of the groove along the width direction of the slab, and the bottom partition is inclined, and the upper end is close to the water spraying end.

3. The flame scraping machine according to claim 2, characterized in that: The angle between the bottom partition and the horizontal direction is 3°-5°.

4. The flame scraping machine according to claim 2, characterized in that: The flame cleaning machine also includes a side cleaning assembly for cleaning the side of the slab, the burner of the side cleaning assembly is located on one side of the burner of the lower cleaning assembly along the width direction of the slab, and the water spray end is close to the burner of the side cleaning assembly.

5. The flame scraping machine according to any one of claims 1 to 4, characterized in that: The portion of the burner forming the side wall of the groove is provided with a plurality of notches for accommodating threaded connectors, and the isolation assembly further comprises a side partition connected to the bottom partition, and the side partition covers the plurality of notches.

6. The flame scraping machine according to claim 5, characterized in that: The bottom partition is connected to the side partition by welding, the bottom partition is connected to the mounting base by spot welding, and the side partition is connected to the burner by spot welding.

7. The flame scraping machine according to claim 5, characterized in that: The thickness of the bottom partition plate and the side partition plate is 4-5 mm.

8. The flame scraping machine according to claim 5, characterized in that: The bottom partition plate and the side partition plates are both made of stainless steel plates.

9. The flame scraping machine according to any one of claims 1 to 4, characterized in that: One end of the bottom partition plate and the side partition plate along the width direction of the slab extends out of the groove.

10. The flame scraping machine according to any one of claims 1 to 4, characterized in that: It also includes a purge pipe for purging the shoe block of the burner, and the purge pipe is installed on the installation base and is located outside the groove.

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