Smelting furnace with plate cooler for cooling flue gas

Abstract

The smelting furnace comprises a smelting furnace body, a fixed cover plate is arranged on the right side of the smelting furnace body, two transverse rods are fixedly connected to the right end of the fixed cover plate, and the ends, away from the fixed cover plate, of the two transverse rods are jointly and fixedly connected with a supporting column. A pressing plate is arranged between the two cross rods, a plurality of heat exchange plates are arranged between the fixed cover plate and the pressing plate, the heat exchange plates are of hollow structures, inner cavities of the heat exchange plates are fixedly connected with fixed rods, the outer surfaces of the fixed rods are slidably sleeved with a plurality of scrapers, the fixed rods are sleeved with a plurality of springs, and the springs and the scrapers are distributed at intervals; a plurality of through holes are formed in the surfaces of the scrapers, the heat exchange plate and other structures are adopted, the movable scrapers are arranged in the heat exchange plate, and smoke and cold water are filtered, so that scaling in the heat exchange plate is effectively reduced, and the phenomenon that the heat exchange effect of the cooler is affected due to scaling is effectively avoided.

Description

Technical Field

[0001] The utility model relates to a smelting furnace, in particular to a smelting furnace with a plate cooler for cooling flue gas, which is applied to the field of smelting furnaces. Background Art

[0002] A smelting furnace is a device used for smelting alloy steel, carbon steel, and copper steel. It can also be used for smelting and heating non-ferrous metals such as copper and aluminum. The smelting furnace has the characteristics of light equipment, high efficiency, low power consumption, easy furnace temperature control, simple operation, and easy installation. It is often used in various occasions where metals need to be heated.

[0003] A smelting furnace will generate a large amount of high-temperature flue gas when working. The high-temperature flue gas needs to be cooled before being discharged. Most of the existing flue gas cooling methods use plate coolers to cool the flue gas by exchanging heat with cold water. However, after long-term use, both the flue gas and water flow may cause different degrees of soot and scale inside the heat exchange plate, thereby reducing the heat transfer coefficient of the heat exchange plate, increasing the resistance to gas and liquid flow, and causing the plate cooler to fail to operate normally. Summary of the invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the utility model is that when the existing smelting furnace uses a plate cooler to cool the flue gas, the inside of the plate cooler is easily scaled due to the flue gas and cold water, which leads to a decrease in the heat transfer coefficient of the heat exchange plate and affects the cooling effect of the flue gas.

[0005] In order to solve the above problems, the utility model provides a smelting furnace with a plate cooler for cooling flue gas, including a smelting furnace body, a fixed cover plate is arranged on the right side of the smelting furnace body, the right end of the fixed cover plate is fixedly connected to two cross bars, the ends of the two cross bars away from the fixed cover plate are commonly fixedly connected to a support column, a pressure plate is arranged between the two cross bars, a plurality of heat exchange plates are arranged between the fixed cover plate and the pressure plate, the heat exchange plate is a hollow structure, a fixed rod is fixedly connected to the inner cavity of the heat exchange plate, a plurality of scrapers are arranged on the sliding sleeve of the outer surface of the fixed rod, a plurality of springs are arranged on the outer sleeve of the fixed rod, the plurality of springs are respectively spaced apart from the plurality of scrapers, a plurality of through holes are drilled on the surface of the scraper, mounting holes are drilled through the four corners of the surface of the heat exchange plate, and the front side A mounting ring is inserted into one of the two mounting holes, a filter bag is fixedly connected to the right end of the mounting ring, an arc groove is bored on the surface of the mounting ring, a plurality of limit plates are fixedly connected to the surface of the mounting ring, a plurality of accommodating grooves which respectively match the plurality of limit plates are bored on the surface of the heat exchange plate, a pressure sensor is fixedly connected to the accommodating groove, the limit plate is located in the accommodating groove and fits with the pressure sensor, two discharge pipes are provided on the right side of the pressing plate, the left ends of the two discharge pipes are movably penetrated through the pressing plate and the adjacent mounting holes in turn and are fixedly connected to the fixed cover plate, a plurality of discharge holes are bored on the outer surface of the discharge pipe, two discharge inlet pipes are fixedly connected to the left end of the fixed cover plate, and the other end of one of the discharge inlet pipes is fixedly connected to the smelting furnace body.

[0006] In the above-mentioned smelting furnace with a plate cooler for flue gas cooling, by arranging a movable scraper inside the heat exchange plate and filtering the flue gas and cold water, scaling inside the heat exchange plate is effectively reduced, and the heat exchange effect of the cooler is effectively prevented from being affected by scaling.

[0007] As a further improvement of the present application, a limiting groove is drilled at the left end of the mounting ring, and of the two mounting holes on the front side, a limiting ring matching the limiting groove is fixedly connected in the other mounting hole, and the right end of the limiting ring is located in the limiting groove.

[0008] As a further improvement of the present application, the right end of the fixed cover plate is rotatably connected to a plurality of screw rods, the right ends of the screw rods are movably penetrated through the pressure plate, and nuts are provided on the threaded sleeves on the outer surfaces of the screw rods.

[0009] As a further improvement of the present application, the outer annular surface of the scraper located in the middle is in contact with the inner wall of the heat exchange plate, and the lengths of the scrapers on both sides are smaller than the length of the scraper in the middle.

[0010] As another improvement of the present application, the lower end of the heat exchange plate fits with the upper end of the lower cross bar, the mounting rings are staggered up and down, and the filter bag is located in the adjacent limiting rings.

[0011] As another improvement of the present application, a temperature sensor is fixedly installed on the outer surface of the discharge pipe, and both the pressure sensor and the temperature sensor are connected to the external controller signal.

[0012] To sum up, in actual application, the flue gas of the smelting furnace body enters the mounting ring through an inlet pipe, and enters the heat exchange plate after being filtered by a filter bag. Cold water enters the heat exchange plate through another inlet pipe, so that the cold water and the flue gas are alternately distributed inside multiple heat exchange plates, thereby exchanging heat and cooling the flue gas. In the cooling process, the flue gas and cold water impact the scraper, causing the spring to deform, thereby driving the scraper to move and scraping the inside of the heat exchange plate, thereby effectively reducing scaling inside the heat exchange plate, effectively avoiding the problems of reduced heat transfer coefficient and affected heat exchange effect caused by scaling, and extending the service life of the heat exchange plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present application;

[0014] Figure 2 This is a schematic diagram of the fixed cover structure of the first embodiment of the present application;

[0015] Figure 3 This is a left view of the heat exchange plate structure of the first embodiment of the present application;

[0016] Figure 4 This is a schematic diagram of the mounting ring structure of the first embodiment of the present application;

[0017] Figure 5 This is a right view of the heat exchange plate structure of the first embodiment of the present application;

[0018] Figure 6 This is a schematic diagram of the scraper structure of the first embodiment of the present application;

[0019] Figure 7 This is a schematic diagram of the discharge pipe structure of the first embodiment of the present application;

[0020] Figure 8 This is a schematic diagram of the three-dimensional structure of the second embodiment of the present application.

[0021] Description of the numbers in the figure:

[0022] 1 smelting furnace body, 2 fixed cover plate, 3 cross bar, 4 support column, 5 pressure plate, 6 heat exchange plate, 7 fixed rod, 8 scraper, 9 spring, 10 through hole, 11 mounting hole, 12 mounting ring, 13 filter bag, 14 limit plate, 15 pressure sensor, 16 discharge pipe, 17 discharge pipe, 18 limit groove, 19 limit ring, 20 screw, 21 temperature sensor. DETAILED DESCRIPTION

[0023] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0024] The first implementation method:

[0025] Figure 1 and Figure 2 It shows: a smelting furnace with a plate cooler for cooling flue gas, comprising a smelting furnace body 1, a fixed cover plate 2 is provided on the right side of the smelting furnace body 1, two cross bars 3 are fixedly connected to the right end of the fixed cover plate 2, and the ends of the two cross bars 3 away from the fixed cover plate 2 are commonly fixedly connected to a support column 4, a pressing plate 5 is provided between the two cross bars 3, and two discharge pipes 17 are fixedly connected to the left end of the fixed cover plate 2, and the other end of one of the discharge pipes 17 is fixedly connected to the smelting furnace body 1, and a plurality of screws 20 are rotatably connected to the right end of the fixed cover plate 2, and the right ends of the screws 20 are movably penetrated through the pressing plate 5, and nuts are provided on the outer surface of the screws 20. The pressing plate 5 is limited and fixed by the plurality of screws 20 and nuts, thereby improving the stability of the plurality of heat exchange plates 6.

[0026] Figure 3 , Figure 4 and Figure 5 It is shown that: the four corners of the surface of the heat exchange plate 6 are penetrated with mounting holes 11, and one of the two mounting holes 11 on the front side is inserted with a mounting ring 12, and the right end of the mounting ring 12 is fixedly connected to a filter bag 13, and the surface of the mounting ring 12 is bored with an arc groove, and the flue gas and water flow enter the interior of the heat exchange plate 6 through the arc groove, and the surface of the mounting ring 12 is fixedly connected to a plurality of limit plates 14, and the surface of the heat exchange plate 6 is bored with a plurality of accommodating grooves respectively matching the plurality of limit plates 14, and the accommodating groove is fixedly connected to a pressure sensor 15, and the limit plate 14 is located in the accommodating groove and fits with the pressure sensor 15. Those skilled in the art can select a suitable type of pressure sensor 15 according to actual needs, for example: SQB, and the pressure sensor 15 can be used to detect The pressure when the flue gas and water flow impact the filter bag 13 is measured. When the filter bag 13 is blocked, the pressure on the pressure sensor 15 will increase, thereby prompting the staff to replace the filter bag 13. A limiting groove 18 is drilled at the left end of the mounting ring 12. Among the two mounting holes 11 on the front side, a limiting ring 19 matching the limiting groove 18 is fixedly connected in the other mounting hole 11. The right end of the limiting ring 19 is located in the limiting groove 18, and the filter bag 13 is located in the adjacent limiting ring 19. The limiting ring 19 is inserted into the limiting groove 18, thereby improving the stability of the mounting ring 12. The lower end of the heat exchange plate 6 is in contact with the upper end of the cross bar 3 below. The mounting rings 12 are staggered up and down, so that the water flow and flue gas enter different heat exchange plates 6 in an alternating manner, thereby improving the heat exchange efficiency.

[0027] Figure 6It is shown that: a plurality of heat exchange plates 6 are arranged between the fixed cover plate 2 and the pressure plate 5. The heat exchange plates 6 are of a hollow structure. A fixed rod 7 is fixedly connected to the inner cavity of the heat exchange plate 6. A plurality of scrapers 8 are slidingly sleeved on the outer surface of the fixed rod 7. A plurality of springs 9 are arranged on the outer sleeve of the fixed rod 7. The plurality of springs 9 are respectively spaced apart from the plurality of scrapers 8. A plurality of through holes 10 are drilled on the surface of the scraper 8. The outer annular surface of the scraper 8 in the middle is in contact with the inner wall of the heat exchange plate 6. The lengths of the scrapers 8 on both sides are less than the length of the scraper 8 in the middle. After water flow and flue gas enter the interior of the heat exchange plate 6, they impact the scraper 8 when passing through the through hole 10, thereby deforming the spring 9, driving the scraper 8 to displace, and scraping the inner wall of the heat exchange plate 6 in the scraper 8, thereby effectively avoiding scaling inside the heat exchange plate 6 and effectively extending the service life of the heat exchange plate 6.

[0028] Figure 7 It is shown that two exhaust pipes 16 are arranged on the right side of the pressing plate 5, and the left ends of the two exhaust pipes 16 are movable through the pressing plate 5 and the adjacent mounting holes 11 in turn and are fixedly connected to the fixed cover plate 2, and a plurality of exhaust holes are drilled on the outer surface of the exhaust pipe 16, one of the two exhaust pipes 16 is used for water discharge, and the other is used for smoke discharge, and the plurality of exhaust holes correspond to a plurality of different mounting rings 12, so that the exhaust holes on the two exhaust pipes 16 are staggeredly distributed, thereby improving the heat exchange efficiency.

[0029] During use, the flue gas of the smelting furnace body 1 enters the mounting ring 12 through an inlet pipe 17, and enters the interior of the heat exchange plate 6 after filtering the flue gas through the filter bag 13. Cold water enters the interior of the heat exchange plate 6 through another inlet pipe 17, so that the cold water and the flue gas are alternately distributed inside multiple heat exchange plates 6, thereby exchanging heat and cooling the flue gas. During the cooling process, the flue gas and the cold water impact the scraper 8, causing the spring 9 to deform, thereby driving the scraper 8 to move and scrape the inside of the heat exchange plate 6. The flue gas and water flow after heat exchange enter the exhaust pipe 16 through multiple exhaust holes and are then discharged. The pressure when the flue gas and water flow impact the filter bag 13 can be detected by the pressure sensor 15. When the filter bag 13 is blocked, the pressure on the pressure sensor 15 will increase, thereby prompting the staff to replace the filter bag 13, thereby effectively reducing the scaling inside the heat exchange plate 6, effectively avoiding the problems of reduced heat transfer coefficient and affected heat exchange effect caused by scaling, and extending the service life of the heat exchange plate 6.

[0030] The second implementation method:

[0031] Based on the first embodiment, this embodiment adds a temperature sensor 21, and the rest of the parts are consistent with the first embodiment.

[0032] Figure 8It is shown that a temperature sensor 21 is fixedly installed on the outer surface of the discharge pipe 16. Those skilled in the art can select a suitable type of temperature sensor 21 according to actual needs, such as WZP-231. The pressure sensor 15 and the temperature sensor 21 are both connected to the external controller signal.

[0033] When in use, the temperature sensor 21 is used to monitor the temperature of the water flow and smoke exhaust in real time, so as to detect the heat exchange effect of the plate cooler.

[0034] In view of current practical needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A smelting furnace with a plate cooler for cooling flue gas, comprising a smelting furnace body (1), characterized in that: A fixed cover plate (2) is provided on the right side of the smelting furnace body (1); two cross bars (3) are fixedly connected to the right end of the fixed cover plate (2); ends of the two cross bars (3) away from the fixed cover plate (2) are commonly fixedly connected to a support column (4); a pressure plate (5) is provided between the two cross bars (3); and a plurality of heat exchange plates (6) are provided between the fixed cover plate (2) and the pressure plate (5); The heat exchange plate (6) is a hollow structure. The inner cavity of the heat exchange plate (6) is fixedly connected to a fixing rod (7). The outer surface of the fixing rod (7) is slidably sleeved with a plurality of scrapers (8). The outer sleeve of the fixing rod (7) is provided with a plurality of springs (9). The plurality of springs (9) are respectively spaced apart from the plurality of scrapers (8). The surface of the scraper (8) is provided with a plurality of through holes (10). The four corners of the surface of the heat exchange plate (6) are all penetrated by mounting holes (11). One of the two mounting holes (11) on the front side is provided with a through hole (11). A mounting ring (12) is inserted into the mounting hole (11), a filter bag (13) is fixedly connected to the right end of the mounting ring (12), an arc-shaped groove is cut on the surface of the mounting ring (12), a plurality of limit plates (14) are fixedly connected to the surface of the mounting ring (12), a plurality of accommodating grooves respectively matching the plurality of limit plates (14) are cut on the surface of the heat exchange plate (6), a pressure sensor (15) is fixedly connected to the accommodating groove, and the limit plate (14) is located in the accommodating groove and fits the pressure sensor (15); Two discharge pipes (16) are provided on the right side of the pressure plate (5), and the left ends of the two discharge pipes (16) are movably inserted through the pressure plate (5) and the adjacent mounting holes (11) in turn and are fixedly connected to the fixed cover plate (2). A plurality of discharge holes are drilled on the outer surface of the discharge pipe (16), and the left end of the fixed cover plate (2) is fixedly connected to two discharge inlet pipes (17), and the other end of one of the discharge inlet pipes (17) is fixedly connected to the smelting furnace body (1).

2. A smelting furnace with a plate cooler for flue gas cooling according to claim 1, characterized in that: A limiting groove (18) is formed at the left end of the mounting ring (12); and of the two mounting holes (11) on the front side, a limiting ring (19) matching the limiting groove (18) is fixedly connected in the other mounting hole (11), and the right end of the limiting ring (19) is located in the limiting groove (18).

3. The smelting furnace with a plate cooler for flue gas cooling according to claim 1, characterized in that: The right end of the fixed cover plate (2) is rotatably connected to a plurality of screw rods (20), the right ends of the screw rods (20) all movably penetrate the pressure plate (5), and nuts are threadedly sleeved on the outer surfaces of the screw rods (20).

4. The smelting furnace with a plate cooler for flue gas cooling according to claim 1, characterized in that: The outer annular surface of the scraper (8) located in the middle fits with the inner wall of the heat exchange plate (6), and the lengths of the scrapers (8) on both sides are shorter than the length of the scraper (8) in the middle.

5. The smelting furnace with a plate cooler for flue gas cooling according to claim 2, characterized in that: The lower end of the heat exchange plate (6) fits with the upper end of the lower crossbar (3), the mounting rings (12) are staggered up and down, and the filter bag (13) is located in an adjacent limiting ring (19).

6. The smelting furnace with a plate cooler for flue gas cooling according to claim 1, characterized in that: A temperature sensor (21) is fixedly mounted on the outer surface of the discharge pipe (16), and both the pressure sensor (15) and the temperature sensor (21) are connected to an external controller signal.

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