Coke oven machine side flue gas dust removal device convenient to overhaul

Abstract

The utility model discloses a coke oven machine side flue gas dust removal device convenient to overhaul, belongs to the technical field of coke oven flue gas dust removal equipment, and can realize overhaul and real-time dredging of a flue gas U-shaped pipeline. According to the technical scheme, a flue gas main pipeline is of a cylindrical pipeline structure, fixed rails are welded to the upper end of an inner box plate and the top of an outer box plate of a sealed water tank respectively, a flue gas U-shaped pipe is placed in the sealed water tank, walking wheels are installed on the two sides of the flue gas U-shaped pipe respectively, and the flue gas U-shaped pipe can move on the rails through the walking wheels; the lower end of the V-shaped structure is connected with a blow-off pipeline, the upper end of the flue gas U-shaped pipe is connected with a flue gas access pipeline through flexible connection, sludge scraping devices are installed on the two sides of the lower portion of the flue gas U-shaped pipe respectively, and sludge scraping plates at the bottoms of the sludge scraping devices can scrape sludge on the bottom face of the V-shaped structure on the lower portion of the sealed water tank. The utility model has a simple structure, is convenient to use, can enhance the self strength, can carry out on-line overhaul and maintenance on the flue gas pipeline without disassembly and assembly, and also reduces the workload of desilting.

Description

Technical Field

[0001] This utility model relates to a water seal dust removal device for flue gas on the machine side of a coke oven, belonging to the technical field of coke oven flue gas dust removal equipment. Background Technology

[0002] In the process of flue gas treatment in the coking industry, the main flue gas pipeline of the coke oven machine-side dust collector is responsible for collecting and transporting flue gas to the dust collection device. The main flue gas collection pipeline generally adopts a water-sealed negative pressure design. These pipelines are all square welded pipes with multiple annular reinforcing ribs welded to the outer wall and several support rods welded internally to ensure the strength of the main flue gas pipeline itself. This results in a large amount of welding work and increases installation difficulty. Meanwhile, the flue gas inlet pipes introduced from the coke pusher car into the main flue gas pipeline of the coke oven machine-side dust collector are basically designed as integrated rigid structures. During maintenance, they must be dismantled and cut, extending maintenance time and workload, and posing certain difficulties for flue gas pipeline maintenance. Furthermore, the bottom of the sealed water tank of the flue gas inlet pipeline is not equipped with a real-time sludge scraping and drainage device; the accumulated sludge is basically handled by periodic sludge removal, which also increases the workload of sludge removal. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a coke oven machine-side flue gas dust removal device that is easy to maintain. This flue gas dust removal device can enhance its own strength, reduce the amount of construction work such as welding, and at the same time, it can perform online maintenance and repair of flue gas pipelines without disassembly and assembly, and can discharge sewage from the sealed water tank, reducing the amount of dredging work.

[0004] The technical solution to the above technical problem is:

[0005] A convenient-to-maintain coke oven machine-side flue gas dust removal device includes a main flue gas duct and a sealed water tank. The sealed water tank is fixedly installed on one side of the main flue gas duct, and multiple square holes connect the sealed water tank to the side wall of the main flue gas duct. A water supply pump and a liquid level regulating device are respectively installed at both ends of the sealed water tank. The improvement lies in that the main flue gas duct has a cylindrical structure, with sealing valves installed at both ends. The middle section of the main flue gas duct is the operating zone, and the two ends are maintenance zones. A sealing valve is installed at the boundary between the operating zone and the maintenance zone. A flue gas access pipe is installed in the operating zone of the main flue gas duct. Rails are welded and fixed to the upper end of the inner tank plate and the top of the outer tank plate of the sealed water tank, with the rails running along the length of the sealed water tank. The lower part of the sealed water tank has a V-shaped structure, with the lower end of the V-shaped structure connected to a sewage pipe. The sewage pipe runs along the length of the sealed water tank. A flue gas U-shaped pipe is placed inside the sealed water tank. Wheels are installed on both sides of the upper part of the flue gas U-shaped pipe, corresponding to the tracks on the inner and outer panels of the sealed water tank, respectively. The wheels and tracks are in a rolling fit. The upper end of the flue gas U-shaped pipe is connected to the flue gas inlet pipe via a flexible connection. Sludge scraping devices are installed on both sides of the lower part of the flue gas U-shaped pipe. The bottom of the sludge scraping device has a scraper plate, which is V-shaped. The bottom of the scraper plate matches the bottom surface of the V-shaped structure at the bottom of the sealed water tank, and the bottom of the scraper plate and the bottom surface of the V-shaped structure at the bottom of the sealed water tank are in a sliding fit.

[0006] The aforementioned easy-to-maintain coke oven machine-side flue gas dust removal device has an inner box plate of the sealed water tank whose upper end is welded to the lower edge of the square hole of the main flue gas pipe via a horizontal connecting plate. Above the inner box plate is an L-shaped upper baffle plate. The long plate of the L-shaped upper baffle plate is placed horizontally, and one end of the long plate is welded to the upper edge of the square hole of the main flue gas pipe. The short plate of the L-shaped upper baffle plate is vertically downward and located in the middle of the sealed water tank. The short plate is inserted into the middle of the U-shaped groove of the flue gas U-shaped pipe.

[0007] The aforementioned easy-to-maintain coke oven machine-side flue gas dust removal device features channel steel tracks on the upper part of the inner box plate and the top of the outer box plate of the sealed water tank. The flue gas U-shaped pipe consists of an inlet pipe, a horizontal pipe, and an outlet pipe, all of which are square pipes. The inlet and outlet pipes are placed parallel and vertically. The horizontal pipe is connected to the lower ends of the inlet and outlet pipes. The upper end of the inlet pipe is connected to the lower end of the flue gas inlet pipe via a flexible connection. The upper end of the outlet pipe has a 90-degree bend. A traveling wheel seat is welded to the upper outer side of the inlet pipe, and the traveling wheel is installed below the traveling wheel seat. A traveling wheel is installed below the bend of the outlet pipe. The traveling wheel on the outer side of the inlet pipe and the traveling wheel below the bend of the outlet pipe are on the same horizontal plane. The traveling wheels are respectively embedded in the channel steel tracks on the upper part of the inner box plate and the top of the outer box plate of the sealed water tank.

[0008] The aforementioned easy-to-maintain coke oven machine-side flue gas dust removal device has L-shaped detachable upper partitions at both ends of the inner tank plate of the sealed water tank. The long plate of the L-shaped detachable upper partition is placed horizontally, and one end of the long plate is connected to the upper edge of the square hole of the flue gas main pipe by bolts. The short plate of the L-shaped detachable upper partition is located vertically downward in the middle of the sealed water tank, and the two ends of the short plates of the two L-shaped detachable upper partitions are respectively connected to the short plates of the adjacent L-shaped upper partitions by bolts.

[0009] The aforementioned easy-to-maintain coke oven machine-side flue gas dust removal device comprises a scraper plate, a handwheel, a connecting platform, a lead screw, a lead screw nut, and a seat. One end of the connecting platform is welded to both sides of the inlet pipe on the flue gas U-shaped pipe, and the other end is bolted to the lead screw nut and seat. The lead screw passes through the lead screw nut and seat, which consists of a thrust bearing, a nut sleeve, a ball bearing, a bearing cover, and a bracket. A handwheel is installed on the nut sleeve and connected to the lead screw. The bottom of the lead screw is connected to the scraper plate via a flange, and the main body of the scraper plate has a V-shaped flat plate structure.

[0010] The aforementioned easy-to-maintain coke oven machine-side flue gas dust removal device comprises a sealing steel plate consisting of a tie rod, a sealing strip, and a pull lug. The sealing strip is adhered to the front of the sealing steel plate with strong adhesive, and the pull lug is welded to the back of the sealing steel plate. The sealing steel plate is bolted to the flange bolts on the L-shaped upper partition. One end of the tie rod is secured to the tie rod, which is pre-welded to the main flue gas duct. The other end passes through the pull lug, and a nut is fitted onto the rear end of the tie rod.

[0011] The beneficial effects of this utility model are:

[0012] The sealed water tank of this utility model is equipped with a channel steel track on the upper part, and a traveling wheel is installed on the lower part of the flue gas U-shaped pipe, which can move on the channel steel track. The upper part of the flue gas U-shaped pipe is connected to the flue gas inlet pipe through a flexible connection, and the flue gas U-shaped pipe can drive the flue gas inlet pipe to move along the direction of the main flue gas pipe. During maintenance, the flue gas U-shaped pipe can be moved to the maintenance area of ​​the main flue gas pipe, and the sealing valves at both ends of the maintenance area of ​​the main flue gas pipe can be closed to carry out maintenance work. The L-shaped detachable upper partitions at both ends of the inner tank plate of the sealed water tank can be removed to facilitate maintenance work. The sludge scraping device installed on both sides of the flue gas U-shaped pipe can move with the flue gas U-shaped pipe, and the sludge scraping plate at the bottom of the sludge scraping device can scrape off the sludge at the bottom of the sealed water tank.

[0013] This utility model has a simple structure and is easy to use. It can enhance its own strength, reduce the amount of construction work such as welding, and at the same time, it can perform online maintenance and repair of flue gas ducts without disassembly and assembly, and can discharge sewage from sealed water tanks, reducing the amount of dredging work. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 yes Figure 1 AA section view;

[0016] Figure 3 yes Figure 1 BB cross-sectional view;

[0017] Figure 4 yes Figure 1 CC section view;

[0018] Figure 5 yes Figure 1 DD sectional view;

[0019] Figure 6 , 7 8 are the front view, side view, and top view of the flue gas U-shaped pipe;

[0020] Figure 9 This is a schematic diagram of the sludge scraping device;

[0021] Figure 10 , 11 These are the front and side views of the sealing steel plate;

[0022] Figure 12 This is a structural diagram of the tie rod.

[0023] The diagram is marked as follows: 1. Main flue gas pipe; 2. Operating area; 3. Maintenance area; 4. Sealing valve; 5. Ash discharge hole; 6. Manhole; 7. Flue gas access pipe; 8. Water pump; 9. Liquid level regulating device; 10. Sealing water tank; 11. Flue gas inlet pipe; 12. L-shaped upper baffle; 13. Flue gas U-shaped pipe; 14. Inner box plate; 15. Outer box plate; 16. Track; 17. V-shaped structure; 18. Sewage pipe; 19. Traveling wheel; 20. Flexible connection; 21. Connecting bolt and rubber spring seat; 22. Flue gas inlet pipe; 23. Inlet pipe; 24. Horizontal pipe; 25. Outlet pipe; 26. Bend; 27. Traveling wheel seat; 28. L-shaped detachable upper baffle; 29. ​​Sludge scraper; 30. Sludge scraper; 31. Tie rod; 32. Handwheel; 33. Connecting platform; 34. Screw; 35. Screw nut and seat; 36. Sealing steel plate; 37. Tie bar; 38. Sealing strip; 39. Pull lug. Detailed Implementation

[0024] This utility model consists of a main flue gas pipe 1, a flue gas access pipe 7, a water supply pump 8, a liquid level regulating device 9, a sealed water tank 10, a flue gas inlet pipe 11, an L-shaped upper partition 12, a flue gas U-shaped pipe 13, a track 16, a traveling wheel 19, a flexible connection 20, a flue gas inlet pipe 22, a traveling wheel seat 27, an L-shaped detachable upper partition 28, a sludge scraping device 29, and a sealing steel plate 36.

[0025] Figure 1The main flue gas duct 1 is a cylindrical pipe structure. It has an ash discharge hole 5 and a manhole 6. Sealing valves 4 are installed at both ends of the main flue gas duct 1. The middle section of the main flue gas duct 1 is the operating area 2, and both ends are maintenance areas 3. Sealing valves 4 are installed at the boundary between the operating area 3 and the maintenance area 3. A flue gas access pipe is installed in the operating area 3 of the main flue gas duct 1.

[0026] Figure 1 The sealed water tank 10 is fixedly installed on one side of the main flue gas duct 1. The sealed water tank 10 is connected to the side wall of the main flue gas duct 1 by multiple square holes. A water replenishment pump 8 and a liquid level adjustment device 9 are installed at one end of the sealed water tank 10.

[0027] Figure 2 , 3 As shown in Figures 4 and 5, rails 16 are welded and fixed to the upper end of the inner box plate 14 and the top of the outer box plate 15 of the sealed water tank 10, respectively. The rails 16 are along the length of the sealed water tank 10. In one embodiment of this utility model, the rails 16 are channel steel rails. The lower part of the sealed water tank 10 is a V-shaped structure 17. The lower end of the V-shaped structure 17 is connected to the sewage pipe 18, which is along the length of the sealed water tank 10. The upper end of the inner box plate 16 of the sealed water tank 10 is welded to the lower edge of the square hole of the flue gas main pipe 1 through a horizontal connecting plate. Above the inner box plate 16 is an L-shaped upper partition plate 12. The long plate of the L-shaped upper partition plate 12 is placed horizontally, and one end of the long plate is welded to the upper edge of the square hole of the flue gas main pipe 1. The short plate of the L-shaped upper partition plate 12 is located vertically downward in the middle of the sealed water tank 10.

[0028] Figure 2 , 6 The diagram shows that a flue gas U-shaped pipe 13 is placed inside the sealed water tank 10. Traveling wheels 19 are installed on both sides of the upper part of the flue gas U-shaped pipe 13. The traveling wheels 19 correspond to the tracks 16 of the inner box plate 14 and the outer box plate 15 of the sealed water tank 10, respectively. The traveling wheels 19 and the tracks 16 are in rolling contact. The upper end of the flue gas U-shaped pipe 13 is connected to the flue gas inlet pipe 22 through a flexible connection 20.

[0029] Figure 6 , 7As shown in Figure 8, the flue gas U-shaped pipe 13 consists of an inlet pipe 23, a horizontal pipe 24, and an outlet pipe 25. The inlet pipe 23, horizontal pipe 24, and outlet pipe 25 are all square pipes. The inlet pipe 23 and outlet pipe 25 are placed parallel and vertically. The horizontal pipe 24 connects to the lower ends of the inlet pipe 23 and outlet pipe 25. The upper end of the inlet pipe 23 is connected to the lower end of the flue gas inlet pipe 22 via a flexible connector 20. The upper end of the outlet pipe 25 has a 90-degree bend 26. A wheel seat 27 is welded to the upper outer side of the inlet pipe 23, and wheels 19 are installed below the wheel seat 27. Wheels 19 are also installed below the bend 26 of the outlet pipe 25. The wheels 19 on the outer side of the inlet pipe 23 and the wheels 19 below the bend 26 of the outlet pipe 25 are on the same horizontal plane and are respectively embedded in the tracks 16 on the upper end of the inner panel 14 and the top of the outer panel 15 of the sealed water tank 10.

[0030] Figure 5 As shown, for ease of maintenance, the inner panel 14 of the sealed water tank 10 has L-shaped removable upper baffles 28 at both ends. The long plate of the L-shaped removable upper baffle 28 is placed horizontally, and one end of the long plate is bolted to the upper edge of the square hole of the main flue gas pipe 1. The short plate of the L-shaped removable upper baffle 28 is vertically downward and located in the middle of the sealed water tank 10. The two ends of the short plates of the two L-shaped removable upper baffles 28 are respectively bolted to the short plates of the adjacent L-shaped upper baffles 12. During maintenance, the L-shaped removable upper baffles 28 can be disassembled.

[0031] Figure 9 The display shows that scraper devices 29 are installed on both sides of the lower part of the flue gas U-shaped pipe 13. The scraper device 29 has a scraper plate 30 at the bottom. The scraper plate 30 is V-shaped. The bottom of the V-shaped scraper plate 30 matches the bottom surface of the V-shaped structure 17 at the bottom of the sealed water tank 10. The bottom of the scraper plate 30 and the bottom surface of the V-shaped structure 17 at the bottom of the sealed water tank are in sliding fit.

[0032] Figure 9 The scraping device 29 consists of a scraper blade 30, a handwheel 32, a connecting platform 33, a lead screw 34, and a lead screw nut and seat 35. One end of the connecting platform 33 is welded to both sides of the inlet pipe 23 on the flue gas U-shaped pipe 13, and the other end is bolted to the lead screw nut and seat 35. The lead screw 34 passes through the lead screw nut and seat 35. The lead screw nut and seat consists of a thrust bearing, a nut sleeve, a ball bearing, a bearing cover, and a bracket. The handwheel 32 is installed on the nut sleeve. When the handwheel 32 is rotated, the lead screw 34 can move up and down. The bottom of the lead screw 34 is connected to the scraper blade 30, and the two are connected by a flange for easy disassembly. The main body of the scraper blade 30 has a V-shaped flat plate structure and a thickness of 10mm.

[0033] Figure 10 , 11As shown in Figure 12, the sealing steel plate 36 consists of a pull strip 37, a sealing strip 38, and a pull lug 39. The sealing strip 38 is adhered to the front of the sealing steel plate 36 with strong adhesive, and the pull lug 39 is welded to the back of the sealing steel plate 36. The sealing steel plate 36 is connected to the flange bolts on the L-shaped upper partition 12 by bolts. One end of the pull rod 31 is clamped onto the pull strip 37, which is pre-welded to the main flue gas duct 1. The other end passes through the pull lug 39, and a nut is fitted on the pull rod 31. By tightening the nut, the pull strip 37 is pulled, causing the sealing strip 38 to adhere tightly to the main flue gas duct 1, the L-shaped upper partition 12, and the inner box plate 14, isolating the operating area 2 from the maintenance area 1 and ensuring a negative pressure state in the operating area 2. The pull strip 37 is pre-welded to the main flue gas duct 1, and the sealing steel plate 36 can be fixed by the pull rod 31 and the sealing flange bolts, achieving the sealing effect.

[0034] The usage process of this utility model is as follows:

[0035] When fabricating the main flue gas duct 1, first calculate the air volume, then drill elongated square holes. The distance between the square holes in the main flue gas duct 1 should be no less than 50-100mm, ensuring sufficient ventilation while maintaining the operational strength (no deformation) and ventilation volume of the main flue gas duct 1, thereby reducing the workload of welding the pipe reinforcement ribs. The lower edge position of the square holes is determined based on the water level difference during operation of the sealed water tank 10. The channel steel track 16 on the sealed water tank 10 needs to be reinforced with ribs to ensure that it does not shift or fall off during operation. After the channel steel track 16 is laid, install the flue gas U-shaped pipe 13 and move it forward and backward along the channel steel track 16 for its entire working stroke. After smooth operation, weld the L-shaped upper baffle 12 of the sealed water tank 10. The flue gas inlet pipe 22 is welded to the flue gas outlet pipe (not part of this device's pipeline). Before welding, the flue gas inlet pipe 22 and the flue gas U-shaped pipe 13 are connected with connecting bolts and spring seats 21 to ensure alignment after welding.

[0036] Flue gas enters flue gas inlet pipe 22 from flue gas outlet pipe (not part of this device's pipeline), then enters flue gas U-shaped pipe 13 through flexible connection 20, and is ejected from the outlet of flue gas U-shaped pipe 13, entering the main flue gas pipeline 1, and then being discharged from the main flue gas pipeline 1. Because the main flue gas pipeline 1 is under negative pressure, a water level difference is generated in the sealed water tank 10, preventing outside air from entering the main flue gas pipeline 1, thus achieving a water seal effect.

[0037] During maintenance, move the flue gas inlet pipe 11 to the maintenance area 3 on one side of the main flue gas pipe 1, close the sealing valve 4 of the main flue gas pipe 1 and the sealing valve 4 between the maintenance area 3 and the operating area 2, open the flue gas access pipe 7 and the sealing valve 4 on the flue gas access pipe 7, remove the L-shaped detachable upper baffle 28, and the flue gas inlet pipe 11 can be inspected, maintained, or replaced. If long-term maintenance without shutting down the machine is required, the sealing plate 36 device can be installed.

[0038] An embodiment of this utility model is as follows:

[0039] The diameter of the main flue gas duct 1 is 1600mm and the length is 30m;

[0040] The model of sealing valve 4 is D341X-1600;

[0041] The diameter of flue gas passage pipe 7 is 1400 mm;

[0042] The model of water supply pump 8 is IS50-32-125;

[0043] The sealed water tank 10 is 30m long and 1400mm wide. The inner tank panel 14 is 500mm high, the outer tank panel 15 is 750mm high, the track 16 is 200mm wide, the V-shaped structure 17 is 250mm high, and the sewage pipe 18 is 200mm in diameter.

[0044] The long plate of the L-shaped upper partition 12 has a length of ~28m and a width of 800mm, and the short plate has a length of ~28m and a width of 530mm.

[0045] The flue gas U-shaped pipe 13 has an inlet pipe 23 with a length of 1200mm, a width of 2mm, and a thickness of 10mm; a horizontal pipe 24 with a length of ~1000mm, a width of 2m, and a thickness of 10mm; an outlet pipe 25 with a length of 750mm, a width of 2m, and a thickness of 10mm; and a bend 26 with a length of ~700mm, a width of 2m, and a thickness of 10mm.

[0046] The diameter of the traveling wheel 19 is 180mm;

[0047] The flue gas inlet pipe 22 has specifications of 2m×0.5m×1m and a thickness of 10mm;

[0048] The long plate of the L-shaped detachable upper partition 28 is 2m long and 800mm wide, while the short plate is 2m long and 530mm wide.

[0049] During operation, the liquid level difference should not exceed 200mm (higher inside and lower outside), that is, the negative pressure value in the main flue gas pipeline should not exceed 2000Pa.

Claims

1. A coke oven machine side flue dust removal device convenient to overhaul, comprising a flue main pipeline (1) and a sealing water tank (10), the sealing water tank (10) is fixedly installed on one side of the flue main pipeline (1), the sealing water tank (10) is connected with the side wall of the flue main pipeline (1) through multiple square holes, and a water supplement pump (8) and a liquid level adjusting device (9) are arranged at both ends of the sealing water tank (10), characterized in that: The flue gas main pipeline (1) is a cylindrical pipeline structure, and the two ends of the flue gas main pipeline (1) are respectively provided with sealing valves (4). The middle part of the flue gas main pipeline (1) is an operation area (2), and the two ends are maintenance areas (3). The sealing valves (4) are respectively arranged at the boundaries between the operation area (2) and the maintenance areas (3). The operation area (2) of the flue gas main pipeline (1) is provided with a flue gas transportation pipe (7). The inner tank plate (14) and the outer tank plate (15) of the sealing water tank (10) are respectively welded with fixed rails (16) at the upper end and the top. The rails (16) are along the length direction of the sealing water tank (10). The lower part of the sealing water tank (10) is a V-shaped structure (17). The lower end of the V-shaped structure (17) is connected with a blowdown pipeline (18). The blowdown pipeline (18) is along the length direction of the sealing water tank (10). The sealing water tank (10) is placed with a flue gas U-shaped pipe (13). The flue gas U-shaped pipe (13) is provided with walking wheels (19) at the upper part of the two sides. The walking wheels (19) are respectively corresponding to the rails (16) of the inner tank plate (14) and the outer tank plate (15) of the sealing water tank (10). The walking wheels (19) are in rolling cooperation with the rails (16). The upper end of the flue gas U-shaped pipe (13) is connected with a flue gas inlet pipeline (22) through a flexible connection (20). The lower part of the flue gas U-shaped pipe (13) is provided with a mud scraping device (29) at the two sides. The mud scraping device (29) is provided with a mud scraping plate (30) at the bottom. The mud scraping plate (30) is V-shaped. The bottom of the mud scraping plate (30) is matched with the bottom surface of the V-shaped structure (17) at the lower part of the sealing water tank (10). The bottom of the mud scraping plate (30) is in sliding cooperation with the bottom surface of the V-shaped structure (17) at the lower part of the sealing water tank (10). ​ 2. The easily accessible flue gas dedusting device of the coke oven machine side according to claim 1, characterized in that: The upper end of the inner tank plate (14) of the sealing water tank (10) is welded and connected with the lower edge of the square hole of the flue gas main pipeline (1) through a horizontal connecting plate. The upper part of the inner tank plate (14) is provided with an L-shaped upper partition plate (12). The long plate of the L-shaped upper partition plate (12) is horizontally placed. One end of the long plate is welded and connected with the upper edge of the square hole of the flue gas main pipeline (1). The short plate of the L-shaped upper partition plate (12) is vertically downward located at the middle part of the sealing water tank (10). The short plate is inserted into the U-shaped groove of the flue gas U-shaped pipe (13).

3. The easily accessible flue gas dedusting device of the coke oven machine side according to claim 1, characterized in that: The track (16) on the upper end of the inner tank plate (14) and the top of the outer tank plate (15) of the sealed water tank (10) is a channel steel track, the flue gas U-shaped pipe (13) is composed of an inlet pipe (23), a horizontal pipe (24) and an outlet pipe (25), the inlet pipe (23), the horizontal pipe (24) and the outlet pipe (25) are square pipes respectively, the inlet pipe (23) and the outlet pipe (25) are placed vertically in parallel, the horizontal pipe (24) is connected to the lower ends of the inlet pipe (23) and the outlet pipe (25), the upper end of the inlet pipe (23) is connected to the lower end of the flue gas inlet pipe (22) through a flexible connection (20), the upper end of the outlet pipe (25) has a ninety-degree elbow (26), the upper outer side of the inlet pipe (23) is welded with a walking wheel seat (27), a walking wheel (19) is installed below the walking wheel seat (27), the walking wheel (19) is installed below the elbow (26) of the outlet pipe (25), the walking wheels (19) on the outer side of the inlet pipe (23) and below the elbow (26) of the outlet pipe (25) are on the same horizontal plane, and the walking wheels (19) are respectively embedded in the channel steel tracks on the upper end of the inner tank plate (14) and the top of the outer tank plate (15) of the sealed water tank (10).

4. The easily accessible flue dust removal device of the coke oven battery side of the claim 1, characterized in that: The upper ends of the inner tank plate (14) of the maintenance area (3) are respectively provided with L-shaped detachable upper partition plates (28), the long plates of the L-shaped detachable upper partition plates (28) are horizontally placed, one end of the long plate is connected to the upper edge of the square hole of the flue gas main pipe (1) by a bolt, and the short plates of the L-shaped detachable upper partition plates (28) are vertically downwardly located in the middle of the sealed water tank (10), and the short plates of the two L-shaped detachable upper partition plates (28) are respectively connected to the short plates of the adjacent L-shaped upper partition plates (12) by bolts.

5. The easily accessible flue dust removal device of the coke oven battery side of the claim 1, characterized in that: The mud scraping device (29) is composed of a mud scraping plate (30), a hand wheel (32), a connecting platform (33), a lead screw (34), a screw nut and a seat (35), one end of the connecting platform (33) is welded on both sides of the inlet pipe (23) of the flue gas U-shaped pipe (13), the other end is bolted with the screw nut and the seat (35), the lead screw (34) passes through the screw nut and the seat (35), the screw nut and the seat are composed of a thrust bearing, a nut sleeve, a ball bearing, a bearing gland and a bracket, the nut sleeve is provided with the hand wheel (32), the hand wheel (32) is connected with the lead screw (34), the bottom of the lead screw (34) is connected with the mud scraping plate (30) through a flange, and the main body of the mud scraping plate (30) is a V-shaped flat plate structure.

6. The easily accessible flue dust removal device of the coke oven battery side of the patent claim 1, its characterized in that: It also has a sealing steel plate (36) which is composed of a tension bar (37), a sealing strip (38) and a tension ear (39), the sealing strip (38) is pasted on the front of the sealing steel plate (36) by strong adhesive, the tension ear (39) is welded on the back of the sealing steel plate (36), the sealing steel plate (36) is connected with the flange bolt on the L-shaped upper partition plate (12) through a bolt, one end of the pull rod (31) is clamped on the tension bar (37), the tension bar (37) is pre-welded on the flue gas main pipe (1), the other end passes through the tension ear (39), and the nut sleeve is installed at the rear end of the pull rod (31).

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