Smoke self-circulation burner

Abstract

The utility model relates to the technical field of combustors, and discloses a smoke self-circulation combustor which comprises a fixing base, a fixing shell is fixedly installed on the inner wall of the fixing base, a motor is fixedly installed on the top of the fixing shell, a feeding port is fixedly installed on the inner wall of the fixing shell, and a discharging port is fixedly installed on the top of the fixing shell. A combustion air passing barrel is fixedly installed on the inner wall of the fixing shell, and the outer edge of the combustion air passing barrel is rotationally connected with a combustion barrel. Fuel gas is sprayed into the combustion barrel at a high speed through the fuel gas nozzle located outside the fire inlet and the fire inlet, at the moment, through high-speed spraying of the fuel gas, flames rapidly enter the combustion barrel and are combusted, and then a local negative pressure field is formed outside the center of the flames in the combustion barrel; at the moment, the smoke in the furnace chamber is sucked in by the local negative pressure field at the center of the flame, the smoke outside the combustion barrel is carried into the combustor through the fire inlet, the sucked smoke is subjected to secondary combustion through the negative pressure field at the center of the flame, and the nitrogen oxidation amount in the smoke is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of burners, in particular to a flue gas self-circulation burner. Background Art

[0002] Burner is a general term for devices that spray fuel and air in a certain way for mixed combustion. Burners are divided into industrial burners, burners, civil burners, and special burners according to their types and application areas. They are mostly made of corrosion-resistant and high-temperature resistant materials such as stainless steel or titanium. The function of the burner is to atomize the sample through flame combustion.

[0003] Existing burners will produce a lot of smoke after combustion when in use. The smoke contains a large amount of nitrogen oxides. Directly discharging it will cause the nitrogen oxides inside the smoke to exceed the standard. Excessive nitrogen oxides will cause direct pollution to the surrounding environment. At the same time, slag will be produced after combustion inside, and the slag will adhere to the inner wall of the combustion chamber, which is extremely difficult to clean. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a flue gas self-circulation burner, which has the advantages of automatic flue gas reflow and convenient cleaning of the inside, and solves the problems raised by the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a flue gas self-circulation burner, comprising a fixed seat, a fixed shell is fixedly installed on the inner wall of the fixed seat, a motor is fixedly installed on the top of the fixed shell, a feed port is fixedly installed on the inner wall of the fixed shell, a combustion air passing barrel is fixedly installed on the inner wall of the fixed shell, the outer edge of the combustion air passing barrel is rotatably connected to the combustion barrel, the outer wall of the combustion barrel is fixedly sleeved with a gear ring, a fixed sleeve shell and a gas nozzle are respectively fixedly installed on the outer wall of the combustion barrel, a locking block is fixedly installed on the outer wall of the fixed sleeve shell, a fire inlet and a stabilizing hole are respectively opened on the outer wall of the combustion barrel, the inner wall of the fixed sleeve shell is slidably connected to a collecting box, and a scraper is fixedly installed on the inner wall of the combustion air passing barrel.

[0006] As a preferred technical solution of the utility model, there are several gas nozzles, and the several gas nozzles are arranged in a circular array on the outer wall of the combustion barrel, the flame outlets of the several gas nozzles are inclined, and the flame outlets of the several gas nozzles are facing the outer wall of the combustion barrel.

[0007] As a preferred technical solution of the utility model, there are several fire inlets, and the several fire inlets are arranged in a circular array on the outer wall of the combustion barrel, several of the fire inlets correspond to the nozzles of the gas nozzles, and the number of the fire inlets is half the number of the gas nozzles.

[0008] As a preferred technical solution of the utility model, there are a plurality of stabilizing holes, and a circular array of the stabilizing holes is formed on the outer wall of the barrel where the combustion air passes.

[0009] As a preferred technical solution of the utility model, the gear ring is located below the gear, and the gear penetrates the outer wall of the fixed shell, and the gear and the outer wall of the gear ring are meshed.

[0010] As a preferred technical solution of the utility model, a notch is provided on the inner wall of the barrel through which the combustion air passes, near the fixed casing, and the size of the notch matches the size of the inner wall of the fixed casing.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The flue gas self-circulation burner sprays gas into the interior of the combustion barrel at high speed through the gas nozzle located outside the fire inlet through the fire inlet. At this time, the high-speed injection of gas allows the flame to quickly enter the interior of the combustion tube and burn, thereby forming a local negative pressure field outside the flame center inside the combustion barrel. At this time, the local negative pressure field at the flame center sucks the flue gas in the furnace cavity, and the flue gas outside the combustion barrel is carried to the interior of the burner through the fire inlet. The sucked flue gas is then secondary burned through the negative pressure field at the flame center, thereby reducing the amount of nitrogen oxides in the flue gas.

[0013] 2. The flue gas self-circulation burner starts the motor to rotate the gear, which drives the gear ring to rotate, and then drives the combustion barrel to rotate. Through the rotation of the combustion barrel, the inner wall of the combustion barrel rotates at the bottom of the scraper and the slag attached to the inner wall of the combustion barrel is scraped off. When the combustion barrel rotates 540 degrees, the collection box reaches the bottom of the scraper. At this time, the slag enters the interior of the collection box, and the collection box is taken out to clean its interior. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the combustion barrel structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the fixed casing structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the gear ring structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the scraper structure of the utility model.

[0019] In the figure: 1. fixed seat; 2. fixed shell; 3. feed port; 4. motor; 5. gear; 6. lock block; 7. combustion air passing barrel; 8. combustion barrel; 9. gear ring; 10. fixed sleeve; 11. collecting box; 12. gas nozzle; 13. fire inlet; 14. stabilizing hole; 15. scraper. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 - Figure 5 A flue gas self-circulation burner comprises a fixed seat 1, a fixed shell 2 is fixedly installed on the inner wall of the fixed seat 1, a motor 4 is fixedly installed on the top of the fixed shell 2, a feed port 3 is fixedly installed on the inner wall of the fixed shell 2, a combustion air passing barrel 7 is fixedly installed on the inner wall of the fixed shell 2, a combustion barrel 8 is rotatably connected to the outer edge of the combustion air passing barrel 7, a gear ring 9 is fixedly sleeved on the outer wall of the combustion barrel 8, a fixed sleeve shell 10 and a gas nozzle 12 are respectively fixedly installed on the outer wall of the combustion barrel 8, and the outer wall of the fixed sleeve shell 10 is fixedly A locking block 6 is installed, and a fire inlet 13 and a stabilizing hole 14 are respectively provided on the outer wall of the combustion barrel 8. A collecting box 11 is slidably connected to the inner wall of the fixed sleeve 10, and a scraper 15 is fixedly installed on the inner wall of the barrel 7 through which the combustion air passes. In the above structure, the scraper 15 extends to the interior of the combustion barrel 8, and the side of the scraper 15 close to the combustion barrel 8 is in contact with the inner wall of the combustion barrel 8, and the scraper 15 is made of chromium-nickel stainless steel, which contains elements such as chromium and nickel and can maintain structural stability within a certain high temperature range.

[0022] In a preferred embodiment, the number of gas nozzles 12 is several, and the several gas nozzles 12 are arranged in a circular array on the outer wall of the combustion barrel 8, the flame ports of several gas nozzles 12 are inclined, and the flame ports of several gas nozzles 12 are facing the outer wall of the combustion barrel 8. In the above structure, several gas nozzles 12 are started, and they spray gas and ignite, so that the gas burns and sprays toward the outer wall of the combustion barrel 8, and is guided by the outer wall of the combustion barrel 8 to enter the interior of the combustion barrel 8 from the stabilizing hole 14 provided on the outer wall of the combustion barrel 8.

[0023] In a preferred embodiment, the number of the fire inlets 13 is several, and the several fire inlets 13 are arranged in a circular array on the outer wall of the combustion barrel 8, the several fire inlets 13 correspond to the nozzles of the gas nozzles 12, and the number of the fire inlets 13 is half the number of the gas nozzles 12. In the above structure, the number of the fire inlets 13 is half of the gas nozzles 12, so that every other gas nozzle 12 corresponds to the fire inlet 13. When the several gas nozzles 12 are working, the gas is directly sprayed on the interior of the combustion barrel through the fire inlet 13 through the gas nozzles 12 located outside the fire inlet 13, and ignited, so that the ejected gas is ignited, and then the flame entering from the fire inlet 13 enters at a high speed, so that it burns in the inner center of the combustion barrel 8, so that a local negative pressure field is formed outside the combustion flame.

[0024] In a preferred embodiment, there are several stabilizing holes 14, and the several stabilizing holes 14 are arranged in a circular array on the outer wall of the barrel 7 when the combustion air passes through the combustion barrel 7. In the above structure, when a negative pressure field is formed inside the combustion barrel 8, suction is generated inside the combustion barrel 8, and the smoke outside the combustion barrel 8 is sucked into the interior of the combustion barrel 8 through the stabilizing holes 14 for secondary combustion.

[0025] In a preferred embodiment, the gear ring 9 is located below the gear 5, and the gear 5 penetrates the outer wall of the fixed shell 2, and the outer wall of the gear 5 and the gear ring 9 are meshed. In the above structure, by starting the motor 4, the motor 4 drives the gear 5 to rotate. At this time, since the outer wall of the gear 5 and the outer wall of the gear ring 9 are meshed, the gear ring 9 rotates, and then the gear ring 9 drives the combustion barrel 8 to rotate. The rotation of the combustion barrel 8 drives the inner wall of the combustion barrel 8 to rotate on the outer wall of the scraper 15. At this time, due to the fit between the combustion barrel 8 and the scraper 15, the scraper 15 scrapes the inner wall of the combustion barrel 8.

[0026] In a preferred embodiment, a slot is provided on the inner wall of the combustion barrel 8 near the fixed sleeve 10, and the size of the slot is adapted to the size of the inner wall of the fixed sleeve 10. In the above structure, after the combustion barrel 8 rotates 540 degrees, the fixed sleeve 10 reaches the bottom of the scraper 15. At this time, the scraper 15 has completed scraping the interior, so that the residue inside the combustion barrel 8 is blocked by the scraper 15 and falls into the interior of the collection box 11 by gravity.

[0027] Working principle: when using the device, the material is placed into the combustion barrel 8 through the feed port 3. At this time, a plurality of gas nozzles 12 are started, which spray gas and ignite the gas, so that the gas burns and sprays toward the outer wall of the combustion barrel 8. The gas is guided by the outer wall of the combustion barrel 8 so that it enters the combustion barrel 8 from the stabilizing hole 14 provided on the outer wall of the combustion barrel 8 to burn the interior of the combustion barrel 8. At this time, the gas sprayed from the gas nozzle 12 located outside the combustion port 13 directly enters the interior of the combustion barrel 8 through the combustion port 13. The gas is sprayed into the combustion barrel 8 at a high speed through the gas nozzle 12, so that a local negative pressure field is formed outside the high-speed flame inside the combustion barrel 8. At this time, the smoke is carried to the interior of the combustion barrel 8 by the combustion port 13 through the local negative pressure field formed by the high-speed flame inside the combustion barrel 8, and the smoke passes through the high-speed flame inside the center of the combustion tube 8. The flame performs secondary combustion on it, so that the content of nitrogen oxides in the flue gas after the secondary combustion is reduced, and the heat inside it is utilized. When the combustion is completed, the motor 4 is started, and the motor 4 drives the gear 5 to rotate. At this time, the outer wall of the gear 5 and the outer wall of the gear ring 9 are meshed, so that the gear ring 9 rotates, and then the gear ring 9 drives the combustion barrel 8 to rotate. The rotation of the combustion barrel 8 drives the inner wall of the combustion barrel 8 to rotate on the outer wall of the scraper 15. At this time, due to the fit between the combustion barrel 8 and the scraper 15, the scraper 15 scrapes the inner wall of the combustion barrel 8. After the combustion barrel 8 rotates 540 degrees, the fixed sleeve 10 reaches the bottom of the scraper 15. At this time, the scraper 15 has completed scraping the inside of it, so that the residue inside the combustion barrel 8 is blocked by the scraper 15, and now it falls into the inside of the collection box 11 by gravity. At this time, open the lock block 6 to pull out the collection box 11, and clean the ash inside it.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flue gas self-circulating burner, comprising a fixing seat (1), characterized in that: A fixed shell (2) is fixedly mounted on the inner wall of the fixed seat (1), a motor (4) is fixedly mounted on the top of the fixed shell (2), a feed port (3) is fixedly mounted on the inner wall of the fixed shell (2), a combustion air passing barrel (7) is fixedly mounted on the inner wall of the fixed shell (2), the outer edge of the combustion air passing barrel (7) is rotatably connected to a combustion barrel (8), a gear ring (9) is fixedly sleeved on the outer wall of the combustion barrel (8), a fixed sleeve (10) and a gas nozzle (12) are respectively fixedly mounted on the outer wall of the combustion barrel (8), a locking block (6) is fixedly mounted on the outer wall of the fixed sleeve (10), a fire inlet (13) and a stabilizing hole (14) are respectively provided on the outer wall of the combustion barrel (8), a collecting box (11) is slidably connected to the inner wall of the fixed sleeve (10), and a scraper (15) is fixedly mounted on the inner wall of the combustion air passing barrel (7).

2. A flue gas self-circulating burner according to claim 1, characterized in that: The number of the gas nozzles (12) is several, and the several gas nozzles (12) are arranged in a circular array on the outer wall of the combustion barrel (8), the flame-spraying ports of the several gas nozzles (12) are inclined, and the flame-spraying ports of the several gas nozzles (12) face the outer wall of the combustion barrel (8).

3. The flue gas self-circulation burner according to claim 1, characterized in that: The number of the fire inlets (13) is several, and the several fire inlets (13) are arranged in a circular array on the outer wall of the combustion barrel (8), the several fire inlets (13) correspond to the nozzles of the gas nozzles (12), and the number of the fire inlets (13) is half the number of the gas nozzles (12).

4. The flue gas self-circulation burner according to claim 1, characterized in that: The number of the stabilizing holes (14) is several, and the several stabilizing holes (14) are arranged in a circular array on the outer wall of the barrel (7) through which the combustion air passes.

5. The flue gas self-circulation burner according to claim 1, characterized in that: The gear ring (9) is located below the gear (5), and the gear (5) penetrates the outer wall of the fixed shell (2), and the outer wall of the gear (5) and the gear ring (9) are meshed.

6. The flue gas self-circulating burner according to claim 1, characterized in that: The inner wall of the combustion air passage barrel (7) is provided with a notch at a position close to the fixed casing (10), and the size of the notch is adapted to the size of the inner wall of the fixed casing (10).

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