Device for removing coke in uptake flue of copper smelting waste heat boiler

Abstract

The utility model relates to the technical field of pyrometallurgy of non-ferrous metals, and discloses a device for removing coking of an uptake flue of a copper smelting waste heat boiler, which comprises a flue, the flue is in a hollow rectangular tube shape with an open bottom and an open top, the top of the flue is fixedly connected with a smoke exhaust pipe, and the smoke exhaust pipe is in a rectangular hollow tube shape with a top opening gradually shrunk. The bottom of the smoke exhaust pipe is communicated with the top of the flue, a decoking structure is arranged in a cavity of the flue and comprises a movable frame, borders, limiting edges and limiting grooves, the movable frame is slidably connected into the cavity of the flue, the borders are symmetrically and fixedly connected to the two side wall faces of the movable frame, the limiting edges are symmetrically arranged on the inner side wall face of the cavity of the flue, and the limiting grooves are formed in the wall faces of the limiting edges. And the coke cleaning structure can clean coke attached to the inner wall surface of the flue cavity.

Description

Technical Field

[0001] The utility model belongs to the technical field of pyrometallurgical smelting of nonferrous metals, and in particular relates to a device for removing coking in an ascending flue of a waste heat boiler for copper smelting. Background Art

[0002] The flue from the outlet of the bottom-blown furnace smelting flue gas to the waste heat boiler is called the ascending flue. It is a square channel composed of heat exchange tube fins, with a total height of about 17 meters, and the section entering the boiler is about 7.5 meters high. The copper smelting flue gas contains carbon, smoke, gasified heavy metals, organic matter and other impurities that stick to the wall of the flue, which is called coke. In recent years, the high-grade, low-impurity copper smelting raw materials have decreased, and all copper smelting enterprises have adopted copper ore mixed concentrate with high impurity content for production, so the ascending flue is more serious in coking.

[0003] At present, the decoking in domestic copper smelters is all done manually. Due to the complex safety protection devices, long cooling time, slow manual cleaning speed, low safety factor of manual construction, poor working environment, and the high cost of manual decoking each time, there is an urgent need for a device that can automatically remove coke in the flue cavity.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0006] A device for removing coke from an ascending flue of a waste heat boiler for copper smelting comprises a flue, which is in the shape of a hollow rectangular tube with open bottom and top, a smoke exhaust pipe fixedly connected to the top of the flue, the smoke exhaust pipe is in the shape of a rectangular hollow tube with a gradually narrowing top opening, the bottom of the smoke exhaust pipe is connected to the top of the flue, a coke cleaning structure is arranged in the cavity of the flue, the coke cleaning structure comprises a movable frame, a frame, a limiting edge and a limiting groove, the movable frame is slidably connected in the cavity of the flue, the frame is symmetrically fixedly connected to the two side walls of the movable frame, the limiting edges are symmetrically arranged on the side walls of the flue cavity, the limiting grooves are opened on the wall surfaces of the limiting edges, and the coke cleaning structure can remove coke attached to the wall surfaces of the flue cavity.

[0007] As a preferred embodiment of the utility model, the movable frame is in the shape of a rectangular ring, and limiting edges are provided on both sides of the flue cavity. The frame can slide between the symmetrical limiting edges, and the limiting grooves on the wall surfaces of the symmetrical limiting edges on one side of the flue cavity face each other, and the cross-section of the limiting edge is L-shaped.

[0008] As a preferred embodiment of the utility model, the defocusing structure also includes a connecting plate, a roller, an inner top block and an inner top groove, the connecting plate is fixedly connected to the front and rear walls of the frame, the roller is symmetrically rotatably connected to the wall surface of the connecting plate, the inner top block is symmetrically fixedly connected to the top and bottom of the connecting plate, and the inner top groove is opened at the top of the inner top block.

[0009] As a preferred embodiment of the utility model, the roller can rotate in the limiting groove, and an inner top block is provided at the top and bottom of each connecting plate. The symmetrical rollers rotate on the connecting plate wall between the symmetrical inner top blocks. The roller is cylindrical, and the outer wall of the roller is provided with teeth. Another tooth adapted to the roller wall tooth is provided on the flue wall corresponding to the limiting groove. The roller can roll up and down along the limiting groove through the teeth. The inner top groove is an isosceles triangle-shaped groove. One side wall of the inner top block can contact the limiting side wall in the limiting groove, and the other side wall of the inner top block can contact the inner wall of the flue cavity.

[0010] As a preferred embodiment of the utility model, the focus clearing structure also includes side scraping strips, upper scraping strips and lower scraping strips, the side scraping strips are fixedly connected to the top of the frame, the upper scraping strips are fixedly connected to the top of the movable frame, and the lower scraping strips are fixedly connected to the bottom of the movable frame.

[0011] As a preferred embodiment of the utility model, frames are symmetrically arranged at the top and bottom of the frame, the wall surface of the frame can contact the wall surface inside the flue cavity, the upper scraper and the lower scraper are respectively fixedly connected above and below the front wall surface of the movable frame, the length of the upper scraper and the lower scraper are consistent with the length inside the flue cavity, the upper scraper and the lower scraper are also arranged at symmetrical positions on the rear wall surface of the movable frame, and the cross-sections of the upper scraper, the lower scraper and the side scraper are all right-angled triangles.

[0012] As a preferred embodiment of the utility model, the side wall surface of the flue is fixedly connected with a liquid storage tank, the wall surface of the liquid storage tank is fixedly connected with a water pipe, and the wall surface of the water pipe is fixedly connected with a shower head.

[0013] As a preferred embodiment of the utility model, the liquid reservoir is a hollow rectangular box with an open top, the water pipe is a circular tube, one end of the water pipe is connected to the liquid reservoir cavity, the shower head is fixedly connected to the other end of the water pipe, the water pipe can pass through the smoke exhaust pipe cavity from the side wall of the smoke exhaust pipe, and the shower head is located in the center of the smoke exhaust pipe cavity.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The coke in the flue cavity can be automatically scraped off by setting a coke cleaning structure, because the coke cleaning structure drives the side scraping strips, the upper scraping strips and the lower scraping strips to scrape back and forth in the flue cavity through the rollers, thereby scraping off the coke attached to the flue wall. Compared with manual cleaning methods, this solution has shorter cleaning time and lower cost.

[0016] 2. The cleaning effect of the coke cleaning structure can be improved by setting up a liquid storage tank that can be loaded with diluting coke chemicals and then using a shower head to spray it in the flue cavity, because the chemicals sprayed by the shower head can loosen and dilute the solid coke, thereby further improving the cleaning effect of the coke cleaning structure.

[0017] The specific implementation modes of the present utility model are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached picture:

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 This is a cross-sectional view of the flue of the utility model;

[0021] Figure 3 This is an exploded view of the structure inside the flue cavity of the utility model;

[0022] Figure 4 This is an exploded view of the roller and the limiting edge of the utility model;

[0023] Figure 5 It is a three-dimensional diagram of the liquid storage tank, water pipe and shower head of the utility model.

[0024] In the figure: 20, flue; 21, smoke exhaust pipe; 22, liquid storage tank; 23, water pipe; 24, shower; 30, movable frame; 31, frame; 32, connecting plate; 33, roller; 34, inner top block; 35, inner top groove; 36, limiting edge; 37, limiting groove; 40, side scraper; 41, upper scraper; 42, lower scraper. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0026] like Figure 1 and Figure 2 As shown, a device for removing coke from the ascending flue of a copper smelting waste heat boiler includes a flue 20, which is a hollow rectangular tube with open bottom and top, and a smoke exhaust pipe 21 is fixedly connected to the top of the flue 20. The smoke exhaust pipe 21 is a rectangular hollow tube with a gradually narrowing top opening, and the bottom of the smoke exhaust pipe 21 is connected to the top of the flue 20, and the flue 20 is connected to the smoke outlet of the copper smelting waste heat boiler. This is an existing technology and will not be described in detail here.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a focus clearing structure is provided in the cavity of the flue 20, and the focus clearing structure includes a movable frame 30, a frame 31, a limiting edge 36 and a limiting groove 37. The movable frame 30 is slidably connected in the cavity of the flue 20, and the frame 31 is symmetrically fixedly connected to the two side walls of the movable frame 30. The limiting edges 36 are symmetrically arranged on the side walls of the cavity of the flue 20, and the limiting grooves 37 are opened on the wall surfaces of the limiting edges 36. The focus clearing structure can remove the focus attached to the wall surfaces of the cavity of the flue 20.

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the movable frame 30 is in a rectangular ring shape, and the limiting edges 36 are provided on both sides of the flue 20 cavity. The frame 31 can slide between the symmetrical limiting edges 36. The limiting grooves 37 on the wall surfaces of the symmetrical limiting edges 36 on one side of the flue 20 cavity face each other, and the cross section of the limiting edge 36 is L-shaped. The coke clearing structure also includes a connecting plate 32, a roller 33, an inner top block 34 and an inner top groove 35. The connecting plate 32 is fixedly connected to the front and rear walls of the frame 31, and the roller 33 is symmetrically rotated on the wall surface of the connecting plate 32. The blocks 34 are symmetrically fixedly connected to the top and bottom of the connecting plate 32, the inner top groove 35 is opened at the top of the inner top block 34, the roller 33 can rotate in the limiting groove 37, and the top and bottom of each connecting plate 32 are provided with an inner top block 34. The symmetrical rollers 33 rotate on the wall surface of the connecting plate 32 between the symmetrical inner top blocks 34. The rollers 33 are cylindrical, and the outer wall surface of the rollers 33 is provided with teeth. The wall surface of the flue 20 corresponding to the limiting groove 37 is provided with another tooth adapted to the tooth surface of the roller 33 wall. 33 can roll up and down along the limiting groove 37 through the teeth, the inner top groove 35 is an isosceles triangle-shaped groove, one side of the side wall surface of the inner top block 34 can contact the wall surface of the limiting edge 36 in the limiting groove 37, and the other side wall surface of the inner top block 34 can contact the inner wall surface of the flue 20 cavity, and the coke cleaning structure also includes a side scraping strip 40, an upper scraping strip 41 and a lower scraping strip 42, the side scraping strip 40 is fixedly connected to the top of the frame 31, the upper scraping strip 41 is fixedly connected to the top of the movable frame 30, and the lower scraping strip 42 is fixedly connected to the movable frame The frame 31 is symmetrically arranged at the bottom of the movable frame 30, and the top and bottom of the frame 31 are symmetrically arranged. The wall surface of the frame 31 can contact the wall surface of the flue 20 cavity. The upper scraper 41 and the lower scraper 42 are respectively fixedly connected to the upper and lower front wall surfaces of the movable frame 30. The lengths of the upper scraper 41 and the lower scraper 42 are consistent with the lengths of the flue 20 cavity. The upper scraper 41 and the lower scraper 42 are also arranged at symmetrical positions on the rear wall surface of the movable frame 30. The cross-sections of the upper scraper 41, the lower scraper 42 and the side scraper 40 are all right triangles.

[0029] During specific use, a servo motor for driving the roller 33 to rotate is installed at a position corresponding to the roller 33 on the frame 31. The servo motor is electrically connected to a power source. When the flue 20 cavity needs to be cleaned, the servo motor power source is turned on. At this time, the servo motor drives the roller 33 to rotate. At this time, the teeth on the wall of the roller 33 are meshed with the teeth on the wall of the flue 20 cavity, so that it can rise and fall along the limit groove 37. When the roller 33 descends, it drives the connecting plate 32 and the inner top block 34 to move at the same time. The connecting plate 32 can drive the frame 31 to move at the same time. The frame 31 can drive the movable frame 30 to move. The frame 31 can also drive the side scraper strip 40 The movable frame 30 can drive the upper scraper 41 and the lower scraper 42 to move at the same time. When the movable frame 30 and the frame 31 move, the side scraper 40, the upper scraper 41 and the lower scraper 42 will scrape off the coke on the inner wall of the flue 20 cavity and make it fall to the bottom of the flue 20 cavity. If part of the coke is stuck in the limiting groove 37, the inner top block 34 will push it down during the movement. When the roller 33 moves to the lowest point in the flue 20 cavity, the servo motor will drive the roller 33 to move toward the original position, so as to reciprocate in the flue 20 cavity. After the coke is scraped off and the operation is stopped, the coke accumulated at the bottom of the flue 20 cavity can be manually cleaned;

[0030] In summary, by setting up a coke cleaning structure, the coke in the flue 20 cavity can be automatically scraped off, because the coke cleaning structure drives the side scraping strip 40, the upper scraping strip 41 and the lower scraping strip 42 to scrape back and forth in the flue 20 cavity through the roller 33, thereby scraping off the coke attached to the wall of the flue 20. Compared with manual cleaning methods, this solution has shorter cleaning time and lower cost.

[0031] like Figure 1 and Figure 5 As shown, a liquid reservoir 22 is fixedly connected to the side wall of the flue 20, a water pipe 23 is fixedly connected to the wall of the liquid reservoir 22, a shower head 24 is fixedly connected to the wall of the water pipe 23, the liquid reservoir 22 is a hollow rectangular box with an open top, the water pipe 23 is a round tube, one end of the water pipe 23 is connected to the cavity of the liquid reservoir 22, the shower head 24 is fixedly connected to the other end of the water pipe 23, the water pipe 23 can pass through the cavity of the smoke exhaust pipe 21 from the side wall of the smoke exhaust pipe 21, and the shower head 24 is located at the center of the cavity of the smoke exhaust pipe 21;

[0032] In specific use, liquid chemicals for melting coke can be poured into the liquid reservoir 22. When the liquid chemicals are added into the liquid reservoir 22, they will enter the shower head 24 through the water pipe 23 and then be sprayed out from the exhaust pipe 21. Then, they will flow along the wall of the exhaust pipe 21 to the wall of the flue 20. The liquid chemicals can flow out from the circular hole opened on the wall of the shower head 24.

[0033] In summary, by providing a liquid storage tank 22 capable of loading and diluting coking chemicals and then using a shower head 24 to spray the chemicals in the flue 20 cavity, the cleaning effect of the coking cleaning structure can be improved, because the chemicals sprayed by the shower head 24 can loosen and dilute the solid coke, thereby further improving the cleaning effect of the coking cleaning structure.

[0034] Working principle: A servo motor for driving the roller 33 to rotate is installed at the position corresponding to the roller 33 of the frame 31. The servo motor is electrically connected to a power supply. When it is necessary to clean the flue 20 cavity, the servo motor power supply is turned on. At this time, the servo motor will drive the roller 33 to rotate. At this time, the teeth on the wall of the roller 33 will mesh with the teeth on the wall of the flue 20 cavity, so that it can rise and fall along the limit groove 37. When the roller 33 descends, it will drive the connecting plate 32 and the inner top block 34 to move at the same time. The connecting plate 32 can drive the frame 31 to move at the same time. The frame 31 can drive the movable frame 30 to move. The frame 31 can also drive the side scraper 40 to move. The movable frame 30 can drive the upper scraper 41 and the lower scraper 42 to move at the same time. When the movable frame 30 and the frame 31 move, the side scraper 40, the upper scraper 41 and the lower scraper 42 will scrape off the coke on the inner wall of the flue 20 cavity passing by and make it fall to the bottom of the flue 20 cavity.

[0035] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A device for removing coke from an ascending flue of a waste heat boiler for copper smelting, comprising a flue (20), the flue (20) being in the shape of a hollow rectangular tube with an open bottom and a top, a smoke exhaust pipe (21) being fixedly connected to the top of the flue (20), the smoke exhaust pipe (21) being in the shape of a rectangular hollow tube with a gradually narrowing top opening, the bottom of the smoke exhaust pipe (21) being connected to the top of the flue (20), characterized in that: A coke clearing structure is arranged in the cavity of the flue (20), the coke clearing structure comprising a movable frame (30), a frame (31), a limiting edge (36) and a limiting groove (37); the movable frame (30) is slidably connected in the cavity of the flue (20); the frame (31) is symmetrically fixedly connected to the two side walls of the movable frame (30); the limiting edges (36) are symmetrically arranged on the side walls in the cavity of the flue (20); the limiting groove (37) is formed on the wall surface of the limiting edge (36); and the coke clearing structure can clear coke attached to the wall surface in the cavity of the flue (20).

2. The device for removing coke from the ascending flue of a copper smelting waste heat boiler according to claim 1 is characterized in that: The movable frame (30) is in the shape of a rectangular ring, and limiting edges (36) are provided on both sides of the flue (20) cavity. The frame (31) can slide between the symmetrical limiting edges (36), and the limiting grooves (37) on the wall surfaces of the symmetrical limiting edges (36) on one side of the flue (20) cavity face each other, and the cross section of the limiting edge (36) is in an L shape.

3. The device for removing coking in the ascending flue of a waste heat boiler for copper smelting according to claim 1 is characterized in that: The defocusing structure further comprises a connecting plate (32), a roller (33), an inner top block (34) and an inner top groove (35); the connecting plate (32) is fixedly connected to the front and rear wall surfaces of the frame (31); the roller (33) is symmetrically rotatably connected to the wall surface of the connecting plate (32); the inner top block (34) is symmetrically fixedly connected to the top and bottom of the connecting plate (32); and the inner top groove (35) is provided at the top of the inner top block (34).

4. The device for removing coking in the ascending flue of a waste heat boiler for copper smelting according to claim 3 is characterized in that: The roller (33) can rotate in the limiting groove (37), and an inner top block (34) is provided at the top and bottom of each connecting plate (32). The symmetrical rollers (33) rotate on the wall surface of the connecting plate (32) between the symmetrical inner top blocks (34). The rollers (33) are cylindrical, and teeth are provided on the outer wall surface of the rollers (33). Another tooth adapted to the tooth of the wall surface of the roller (33) is provided on the wall surface of the flue (20) corresponding to the limiting groove (37). The rollers (33) can roll up and down along the limiting groove (37) through the teeth. The inner top groove (35) is an isosceles triangle-shaped groove. One side wall surface of the inner top block (34) can contact the wall surface of the limiting edge (36) in the limiting groove (37), and the other side wall surface of the inner top block (34) can contact the inner wall surface of the flue (20) cavity.

5. The device for removing coking in the ascending flue of a copper smelting waste heat boiler according to claim 3 is characterized in that: The focus clearing structure further comprises a side scraping strip (40), an upper scraping strip (41) and a lower scraping strip (42); the side scraping strip (40) is fixedly connected to the top of the frame (31), the upper scraping strip (41) is fixedly connected to the top of the movable frame (30), and the lower scraping strip (42) is fixedly connected to the bottom of the movable frame (30).

6. The device for removing coke from the ascending flue of a copper smelting waste heat boiler according to claim 5, characterized in that: The frame (31) is symmetrically arranged at the top and bottom of the frame (31), and the wall surface of the frame (31) can contact the wall surface of the flue (20) cavity. The upper scraper (41) and the lower scraper (42) are respectively fixedly connected to the upper and lower front wall surfaces of the movable frame (30). The lengths of the upper scraper (41) and the lower scraper (42) are consistent with the lengths of the flue (20) cavity. The upper scraper (41) and the lower scraper (42) are also arranged at symmetrical positions on the rear wall surface of the movable frame (30). The cross-sections of the upper scraper (41), the lower scraper (42) and the side scraper (40) are all right triangles.

7. The device for removing coke from the ascending flue of a copper smelting waste heat boiler according to claim 1, characterized in that: A liquid reservoir (22) is fixedly connected to the side wall surface of the flue (20), a water pipe (23) is fixedly connected to the wall surface of the liquid reservoir (22), and a shower head (24) is fixedly connected to the wall surface of the water pipe (23).

8. The device for removing coking in the ascending flue of a waste heat boiler for copper smelting according to claim 7 is characterized in that: The liquid storage tank (22) is in the form of a hollow rectangular box with an open top; the water pipe (23) is in the form of a circular tube; one end of the water pipe (23) is connected to the cavity of the liquid storage tank (22); the shower head (24) is fixedly connected to the other end of the water pipe (23); the water pipe (23) can pass through the cavity of the smoke exhaust pipe (21) from the side wall surface of the smoke exhaust pipe (21); and the shower head (24) is located at the center of the cavity of the smoke exhaust pipe (21).

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