Smoke guide system of coke oven smoke guide vehicle

Abstract

A smoke guiding system of a coke oven smoke guiding vehicle can remove tar and dust on a pipe wall and comprises an uncovering assembly used for opening an oven top cover and an uncovering execution unit which comprises a middle part fixedly connected with a vertical shaft and two installation parts located on the left side and the right side of the middle part, and the installation parts are limited to transversely and horizontally move; the two uncovering connecting rods, the middle piece and the mounting piece are sequentially and rotationally connected and form a parallelogram structure, and the bottom of the mounting piece is fixedly connected with a grabbing hook; the lifting hydraulic cylinder is used for driving the uncovering assembly to ascend and descend in the vertical pipe, and the cleaning assembly is used for removing coke residues on the lower portion of the inner wall of the vertical pipe. Sediments accumulated on the pipe wall of the vertical pipe can be cleaned in time through the scraping plate, the smoke guiding effect of the vertical pipe is guaranteed, and the smoke guiding cross sectional area is effectively kept. The number of driving pieces is reduced under the high-temperature condition, the stability of system operation can be guaranteed, the manufacturing cost is reduced, and the structure of the lifting pipe is changed to the minimum extent.

Description

Technical Field

[0001] The present invention relates to the technical field of coking, and in particular to a smoke guide system of a coke oven smoke guide vehicle. Background Art

[0002] The seal between the guide sleeve of the smoke guide car and the smoke outlet at the top of the ramming coke oven is a water seal groove. Its main structure is: a water groove is set around the smoke outlet at the top of the furnace, and the water groove is filled with water to provide a sealing effect. During operation, the smoke guide car drives the guide sleeve to move above the smoke outlet at the top of the furnace. Under the action of the lifting drive device, the guide sleeve moves downward until the lower end of the guide sleeve is inserted into the water groove.

[0003] Smoke ducts are directly exposed to high-temperature raw gas, and unburned tar and carbides easily adhere to the tube walls, forming char residue. This tar and dust mixture remains on the tube walls, reducing flue gas flow efficiency and affecting the combustion chamber's cracking of toxic substances like benzopyrene, increasing the risk of excessive emissions. Furthermore, repeated adhesion of high-temperature tar to the tube walls exacerbates thermal stress corrosion of steel, leading to weld cracking (particularly with conventional steel), potentially triggering gas leaks. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a coke oven smoke guide car smoke guide system, which can remove tar and dust on the pipe wall, improve the flow of smoke, and prevent tar from depositing on the pipe wall;

[0005] The solution is a coke oven smoke guide vehicle smoke guide system, characterized by comprising:

[0006] The smoke guide assembly is defined as three vertical tubes, which are sequentially connected by horizontal tubes, and the upper part of the vertical tubes is detachably mounted with an upper end cover;

[0007] A cover-lifting assembly is used to open the furnace top cover, and includes a cover-lifting actuator unit and a cover-lifting hydraulic cylinder, wherein the cover-lifting hydraulic cylinder is connected to the cover-lifting actuator unit via a vertical shaft;

[0008] The lid-lifting actuator unit includes: a middle member fixedly connected to the vertical axis, two mounting members located on the left and right sides of the middle member, the mounting members are limited to horizontal movement, each mounting member is connected to the middle member via two lid-lifting connecting rods, and the two lid-lifting connecting rods, the middle member, and the mounting member are rotatably connected in sequence to form a parallelogram structure. The bottom of the mounting member is fixedly connected to a grab hook;

[0009] The lifting hydraulic cylinder is used to drive the cover assembly to rise and fall in the vertical tube. It is connected to a lifting tube, which is connected to the cover assembly. The vertical shaft extends into the lifting tube. The lifting hydraulic cylinder is installed on a frame fixedly connected to the smoke guide assembly.

[0010] A cleaning assembly is used to remove burnt residues from the lower part of the inner wall of a vertical tube. It includes at least two arc-shaped scrapers, a connecting unit connected to the scrapers and driving the scrapers to move horizontally, and a fixing member fixed on the vertical shaft. The connecting unit is connected to the vertical shaft through the fixing member to drive the movement of the scrapers. The connecting unit includes a rocker arm and a horizontal rod. The fixing member is rotatably connected to one end of the rocker arm through a vertical slide groove provided on the lifting tube. The other end of the rocker arm is rotatably connected to one end of the horizontal rod. The horizontal rod is limited to moving horizontally, and the free end of the horizontal rod is fixedly connected to the scraper.

[0011] Preferably, the cover-lifting connecting rod is tilted upward and inward, the middle piece moves upward, and the mounting piece drives the grabbing hook to close inward to grab the furnace top cover.

[0012] Preferably, there are four scrapers, and two opposite scrapers are symmetrically arranged, the heights of the two adjacent scrapers are inconsistent, and there is overlap along the bending direction.

[0013] Preferably, a cylindrical shell with upper and lower openings is installed on the lifting tube, the shell and the lifting tube are coaxial, and a scraper slot for the scraper to pass through is provided on the shell.

[0014] Preferably, the horizontal rod is slidably connected to a slider, the slider is provided with a sliding groove that cooperates with the horizontal rod, the horizontal rod passes through the sliding groove and is slidably connected to the slider, and the slider is fixedly installed at the bottom of the shell.

[0015] Preferably, cleaning plates inclined outwardly toward the scraper slot are provided above and below the scraper slot. The cleaning plates are arc-shaped structures that are consistent with the curvature of the outer wall of the shell and are fixed on the outer wall of the shell.

[0016] Preferably, a disc-shaped lower plate of the shell is coaxially fixed on the lifting tube, the shell is fixed on the upper part of the lower plate of the shell, and the lower plate of the shell blocks the lower opening of the shell.

[0017] Preferably, a limit plate located above the fixing part is fixed on the lifting tube, and limit grooves running through the upper and lower parts are provided on both sides of the limit plate. A limit guide rod is fixed on the upper part of the fixing part, and the limit guide rod passes through the limit groove upward and is slidably connected to the limit plate. The limit guide rod is provided with limit protrusions located on the upper and lower sides of the limit plate.

[0018] Preferably, a hydraulic cylinder fixing plate is provided on the upper part of the cover-lifting hydraulic cylinder, on which two downward mounting rods are fixed, the lower ends of the mounting rods are fixedly connected to the lifting tube, and the hydraulic rod of the lifting hydraulic cylinder is fixedly connected to the hydraulic cylinder fixing plate.

[0019] The beneficial effects of the present invention are as follows: after the grab hook grabs the furnace top cover, the gravity of the furnace top cover is mainly transmitted to the limit plate through the mounting part, so that the vertical gravity of the furnace top cover received by the grab hook does not directly affect the opening and closing of the grab hook, so that the grab hook will not cause the furnace top cover to fall due to problems with the hydraulic pressure of the cover-lifting hydraulic cylinder, making its mechanical performance more reliable; the scraper can clean the deposits accumulated on the wall of the vertical pipe in time, ensure the smoke guiding effect of the vertical pipe, and effectively maintain the cross-sectional area of ​​the smoke guiding; the cover-lifting hydraulic cylinder controls the opening and closing of the grab hook while driving the horizontal movement of the scraper, so that the cleaning plate scrapes off the deposits on the scraper, reduces the number of driving parts in a limited space, and reduces the manufacturing cost; the lifting hydraulic lever can drive the up and down movement of the furnace top cover, and drives the up and down movement of the scraper to scrape and clean the deposits on the wall of the vertical pipe, reduces the number of driving parts under high temperature conditions, can ensure the stability of the system operation, reduce the manufacturing cost, and minimize the change of the structure of the lifting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic cross-sectional view of the entire invention.

[0022] Figure 3 Schematic diagram of the cover assembly and cleaning assembly of the present invention.

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of the three-dimensional structure.

[0024] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of point A.

[0025] Figure 6 Schematic diagram of the shell mechanism.

[0026] Figure 7 For the present invention Figure 6 Schematic diagram of the three-dimensional structure. DETAILED DESCRIPTION

[0027] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0028] Depend on Figures 1 to 7 Provided is a smoke guide system for a coke oven smoke guide vehicle, characterized in that it comprises:

[0029] The smoke guide assembly is defined as three vertical tubes 1, which are connected in sequence by horizontal tubes 2. The upper part of the vertical tubes 1 is disassembled and equipped with an upper end cover; the furnace top cover 3 is arranged in this order as n, n+1, n+2..., and the three vertical tubes 1 correspond to n, n+2, n+3 from left to right, where n is the furnace top cover 3 corresponding to the coke oven for adding coking coal raw materials.

[0030] A cover-lifting assembly, which is used to open the furnace top cover 3, comprises a cover-lifting execution unit and a cover-lifting hydraulic cylinder 4, wherein the cover-lifting hydraulic cylinder 4 is connected to the cover-lifting execution unit via a vertical shaft 5;

[0031] The cover-lifting execution unit includes: an intermediate part 6 fixedly connected to the vertical axis 5, two mounting parts 7 located on the left and right sides of the intermediate part 6, the mounting parts 7 are limited to horizontal movement, and any mounting part 7 is connected to the intermediate part 6 through two cover-lifting connecting rods 8. The two cover-lifting connecting rods 8, the intermediate part 6 and the mounting part 7 are rotated and connected in sequence and form a parallelogram structure. A grabbing hook 9 is fixedly connected to the bottom of the mounting part 7; there is a grabbing hook 9 at the bottom of each mounting part 7, and the two grabbing hooks 9 move toward or away from each other to realize the grabbing and releasing of the furnace top cover 3.

[0032] The lid-lifting connecting rod 8 tilts upward and inward, the middle piece 6 moves upward, and the mounting piece 7 drives the grab hook 9 to close inward to grab the furnace top cover 3. When the lid-lifting connecting rod 8 tilts upward and inward, the hydraulic cylinder retracts and the grab hook 9 closes to grab the furnace top cover.

[0033] The lid opening hydraulic cylinder 4 drives the middle piece 6 up and down via the vertical shaft 5. The middle piece 6, the mounting piece 7 on one side, and the two lid opening connecting rods 8 connected to it form a parallelogram structure. The upward movement of the middle piece 6 drives the lid opening connecting rods 8 to swing, which in turn drives the mounting piece 7 to move laterally inward. That is, the two mounting pieces 7 move toward each other, causing the two grab hooks 9 to close and realize the grabbing of the furnace top cover 3.

[0034] The lifting hydraulic cylinder 10 is used to drive the cover assembly to rise and fall in the vertical pipe 1. It is connected to a lifting pipe 11, which is connected to the cover assembly. The vertical shaft 5 extends into the lifting pipe 11. The lifting hydraulic cylinder 10 is installed on a frame 24 fixedly connected to the smoke guide assembly; the horizontal pipe is connected to a smoke guide pipe hydraulic cylinder, which is fixedly connected to the horizontal pipe. The smoke guide pipe hydraulic cylinder is fixed on the frame of the smoke guide vehicle. The smoke guide pipe hydraulic cylinder drives the smoke guide assembly to move up and down, and the lifting hydraulic cylinder 10 drives the cover assembly to move up and down. After the cover assembly grabs the furnace top cover 3, the lifting hydraulic cylinder 10 drives the furnace top cover 3 upward into the vertical pipe 1, and then the soot in the No. n coking oven with coking coal raw material enters the n+2 and n+3 coking ovens through the vertical pipe 1 and the horizontal pipe 2 for decomposition and purification to prevent air pollution.

[0035] The cleaning assembly is used to remove the charred residue from the lower part of the inner wall of the vertical tube 1. It includes at least two arc-shaped scrapers 12, a connecting unit connected to the scrapers 12 and driving the scrapers 12 to move horizontally, and a fixing member 15 fixed to the vertical shaft 5. The connecting unit is connected to the vertical shaft 5 through the fixing member 15 to drive the movement of the scrapers 12. The connecting unit includes a swing arm 13 and a horizontal rod 14. The fixing member 15 passes through a vertical slide groove provided on the lifting tube 11 and is rotatably connected to one end of the swing arm 13. The other end of the swing arm 13 is rotatably connected to one end of the horizontal rod 14. The horizontal rod 14 is limited to move horizontally, and the free end of the horizontal rod 14 is fixedly connected to the scrapers 12. The cover hydraulic cylinder 4 drives the grab hook 9 upward to close and grab the furnace top cover 3. At this time, the vertical shaft 5 moves upward, driving the swing arm 13 to move, and then driving the horizontal rod 14 to move toward the vertical shaft 5, and then driving the scrapers 12 to move inward, that is, the scrapers 12 are away from the inner wall of the vertical tube 1. At this time, the smoke guiding process begins. After smoke guidance is complete, the lifting hydraulic cylinder 10 moves downward, and the cover hydraulic cylinder 4 moves downward, driving the grab hook 9 to open, releasing the furnace cover 3 and sealing the coke oven roof opening. At this time, the scraper 12 moves outward, that is, toward the wall of the vertical tube 1. After contacting the wall of the vertical tube 1, the lifting tube 11 reciprocates up and down twice to scrape the deposits on the inner wall of the vertical tube 1.

[0036] Depend on Figure 5 In this embodiment, there are four scrapers 12, two of which are symmetrically arranged in opposite directions. Adjacent scrapers 12 have different heights and overlap along the curved direction. Driven by the connecting unit, the four scrapers 12 are deployed to scrape the entire inner wall of the vertical tube 1, removing deposits thereon.

[0037] Depend on Figure 5-7 In this embodiment, a cylindrical shell 16 opened at the top and bottom is installed on the lifting tube 11. The shell 16 is coaxial with the lifting tube 11. The shell 16 is provided with a scraper slot 25 for the scraper 12 to pass through.

[0038] The horizontal rod 14 is slidably connected to a slider 23, which is provided with a slot that cooperates with the horizontal rod 14. The horizontal rod 14 passes through the slot and is slidably connected to the slider 23. The slider 23 is fixedly mounted on the bottom of the housing. The slider 23 cooperates with the horizontal rod to limit the horizontal movement of the horizontal rod 14.

[0039] The scraper slots 25 are both provided with cleaning plates 17 inclined outwardly toward the scraper slots 25 above and below. The cleaning plates 17 are arc-shaped and conform to the curvature of the outer wall of the housing and are fixed to the outer wall of the housing 16. The vertical shaft 5 moves up and down, driving the scraper to extend and retract through the connecting unit. In this way, the sediment scraped from the scraper 12 is scraped off by the cleaning plates 17 and remains on the cleaning plates 17. The sediment on the cleaning plates 17 can then be cleaned regularly. The lid-lifting hydraulic cylinder 4 drives the grab hook 9 to move and release the furnace top cover 3, while also driving the scraper 12 to move horizontally, thereby causing the scraper 12 and the cleaning plates 17 to move relative to each other. The cleaning plates 17 scrape off the sediment on the scraper 12, preventing excessive sediment from accumulating on the scraper 12 and affecting the scraping and cleaning effect of the scraper 12 on the inner wall of the vertical pipe 1.

[0040] Depend on Figure 3 In this embodiment, a disc-shaped housing lower plate 18 is coaxially fixed to the lift tube 11. The housing 16 is fixed to the upper portion of the housing lower plate 18, and the housing lower plate 18 blocks the lower opening of the housing 16. The housing 16 is inserted into the lift tube 11 from above, and then bolted to the housing lower plate 18, sealing the lower opening of the housing 16. The housing 16 is installed after the housing 15 is installed, followed by the installation of the cleaning assembly.

[0041] A stop plate 19 is fixed to the lifting tube 11, positioned above the fixing member 15. Stop slots extend vertically through both sides of the stop plate 19. A stop guide rod 20 is fixed to the top of the fixing member 15. The stop guide rod 20 extends upward through the stop slots and is slidably connected to the stop plate 19. Stop guide rod 20 is provided with stop protrusions located on the top and bottom of the stop plate 19. The stop plate 19 and stop guide rod 20 act to restrict the fixing member 15 to lateral movement along the stop slots. The stop protrusions restrict the rod to lateral movement along the stop slots, preventing the stop guide rod 20 from moving up or down. The stop protrusions on the stop guide rod 20 can be replaced by stop nuts. The stop rod is threaded and screwed onto the stop nut. This arrangement facilitates installation. First, the stop rod is passed through the stop slot from below, and then the stop nut is screwed in to secure the fixing member 15 to the stop plate 19, thereby limiting the lateral movement of the fixing member 15.

[0042] Depend on Figure 3 and Figure 4In this embodiment, a hydraulic cylinder fixing plate 21 is located above the lid lift cylinder 4. Two downward-facing mounting rods 22 are fixed to this fixing plate 21. The lower ends of the mounting rods 22 are fixedly connected to the lift tube 11. The hydraulic rod of the lift cylinder 10 is also fixedly connected to the fixing plate 21. The lift cylinder 10 drives the lift tube 11 up and down via the mounting rods 22, simultaneously driving the lid lift cylinder 4 along the lift tube 11. To better support the lift tube 11, the mounting rods 22 are symmetrically arranged about the tube's axis.

[0043] The beneficial effects of the present invention are as follows: after the grab hook grabs the furnace top cover, the gravity of the furnace top cover is mainly transmitted to the limit plate through the mounting part, so that the vertical gravity of the furnace top cover received by the grab hook does not directly affect the opening and closing of the grab hook, so that the grab hook will not cause the furnace top cover to fall due to problems with the hydraulic pressure of the cover-lifting hydraulic cylinder, making its mechanical performance more reliable; the scraper can clean the deposits accumulated on the wall of the vertical pipe in time, ensure the smoke guiding effect of the vertical pipe, and effectively maintain the cross-sectional area of ​​the smoke guiding; the cover-lifting hydraulic cylinder controls the opening and closing of the grab hook while driving the horizontal movement of the scraper, so that the cleaning plate scrapes off the deposits on the scraper, reduces the number of driving parts in a limited space, and reduces the manufacturing cost; the lifting hydraulic lever can drive the up and down movement of the furnace top cover, and drives the up and down movement of the scraper to scrape and clean the deposits on the wall of the vertical pipe, reduces the number of driving parts under high temperature conditions, can ensure the stability of the system operation, reduce the manufacturing cost, and minimize the change of the structure of the lifting pipe.

[0044] The embodiments described above do not limit the scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solution of the present invention by those skilled in the art should be included in the scope of protection determined by the claims of the present invention.

Claims

1. A smoke guide system for a coke oven smoke guide vehicle, characterized in that: include: The smoke guide assembly is defined as three vertical tubes (1), the vertical tubes (1) are sequentially connected by horizontal tubes (2), and the upper parts of the vertical tubes (1) are detachably mounted with upper end covers; A cover-lifting assembly, used for opening a furnace top cover (3), comprises a cover-lifting execution unit and a cover-lifting hydraulic cylinder (4), wherein the cover-lifting hydraulic cylinder (4) is connected to the cover-lifting execution unit via a vertical shaft (5); The cover-lifting execution unit comprises: an intermediate member (6) fixedly connected to a vertical shaft (5), two mounting members (7) located on the left and right sides of the intermediate member (6), the mounting members (7) being limited to horizontal movement, each mounting member (7) being connected to the intermediate member (6) via two cover-lifting connecting rods (8), the two cover-lifting connecting rods (8), the intermediate member (6) and the mounting member (7) being rotatably connected in sequence and forming a parallelogram structure therebetween, and a grabbing hook (9) being fixedly connected to the bottom of the mounting member (7); A lifting hydraulic cylinder (10) is used to drive the cover assembly to move up and down in the vertical tube (1), and is connected to a lifting tube (11). The lifting tube (11) is connected to the cover assembly, and the vertical shaft (5) extends into the lifting tube (11). The lifting hydraulic cylinder (10) is installed on a frame (24) fixedly connected to the smoke guide assembly; A cleaning assembly is used to remove scorched residues on the lower portion of the inner wall of a vertical tube (1), comprising at least two arc-shaped scrapers (12), a connecting unit connected to the scrapers (12) and driving the scrapers (12) to move horizontally, and a fixing member (15) fixed to a vertical shaft (5). The connecting unit is connected to the vertical shaft (5) via the fixing member (15) to drive the movement of the scrapers (12), wherein the connecting unit comprises a rocker (13) and a horizontal rod (14). The fixing member (15) passes through a vertical chute provided on a lifting tube (11) and is rotatably connected to one end of the rocker (13). The other end of the rocker (13) is rotatably connected to one end of the horizontal rod (14). The horizontal rod (14) is limited to move horizontally, and the free end of the horizontal rod (14) is fixedly connected to the scraper (12).

2. The smoke guiding system for a coke oven smoke guiding vehicle according to claim 1, characterized in that: The cover-lifting connecting rod (8) tilts upward and inward, the middle piece (6) moves upward, and the mounting piece (7) drives the grabbing hook (9) to close inward to grab the furnace top cover (3).

3. The smoke guiding system of the coke oven smoke guiding vehicle according to claim 2, characterized in that: There are four scrapers (12), and two of them are symmetrically arranged in opposite directions. The heights of two adjacent scrapers (12) are inconsistent, and there is overlap along the bending direction.

4. The smoke guiding system for a coke oven smoke guiding vehicle according to claim 1, characterized in that: A cylindrical shell (16) with upper and lower openings is installed on the lifting tube (11). The shell (16) and the lifting tube (11) are coaxial. The shell (16) is provided with a scraper slot (25) for the scraper (12) to pass through.

5. The smoke guiding system for a coke oven smoke guiding vehicle according to claim 4, characterized in that: The horizontal rod (14) is slidably connected to a slider (23), the slider (23) is provided with a slide groove that matches the horizontal rod (14), the horizontal rod (14) passes through the slide groove and is slidably connected to the slider (23), and the slider (23) is fixedly installed on the bottom of the shell.

6. The smoke guiding system of a coke oven smoke guiding vehicle according to claim 4 or 5, characterized in that: Cleaning plates (17) inclined outwardly toward the scraper slot (25) are provided above and below the scraper slot (25). The cleaning plates (17) are arc-shaped and consistent with the curvature of the outer wall of the shell and are fixed on the outer wall of the shell (16).

7. The smoke guiding system for a coke oven smoke guiding vehicle according to claim 6, characterized in that: A disc-shaped housing lower plate (18) is coaxially fixed to the lifting tube (11), the housing (16) is fixed on the upper portion of the housing lower plate (18), and the housing lower plate (18) blocks the lower opening of the housing (16).

8. The smoke guiding system of a coke oven smoke guiding vehicle according to any one of claims 1 to 3, characterized in that: The smoke guiding system of the coke oven smoke guiding vehicle is characterized in that a limit plate (19) located above the fixing member (15) is fixed on the lifting tube (11), and limit grooves running through the limit plate (19) are provided on both sides thereof, and a limit guide rod (20) is fixed on the upper part of the fixing member (15), and the limit guide rod (20) passes through the limit groove upward and is slidably connected to the limit plate (19), and the limit guide rod (20) is provided with limit protrusions located on the upper and lower sides of the limit plate (19).

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