A flue gas heating furnace

Abstract

The present invention relates to the technical field of flue gas heating furnaces, and discloses a flue gas heating furnace, including a heating furnace, wherein a connected flue gas duct is arranged at one end of the heating furnace, a combustion pipe is arranged at one side of the flue gas duct, and a combustion fan is installed on the combustion pipe, a combustion chamber is arranged in the heating furnace, and connected ash discharge holes are arranged at the bottom of the combustion chamber, the heating furnace is provided with a first exhaust pipe at one end of the combustion chamber, the heating furnace is provided with a cold air end outside the first exhaust pipe, and a cold air pipe connected to the cold air end is arranged on the outer wall of the heating furnace. The flue gas heating furnace heats and burns the flue gas in the flue gas duct in the combustion chamber through the combustion pipe, the first exhaust pipe increases the heating time of the flue gas by reducing the exhaust pipe diameter, the cold air pipe and the first blower discharge the flue gas at the cold air end, improve the heat conversion of the flue gas, and discharge the flue gas into the mixing air pipe through the second exhaust pipe, and mix the flue gas again, thereby improving the heat conversion rate.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas heating furnaces, in particular to a flue gas heating furnace. Background Art

[0002] In the metallurgical industry, a heating furnace is a device (industrial furnace) that heats materials or workpieces (usually metals) to rolling and forging temperature. Heating furnaces are used in many industries such as petroleum, chemical industry, metallurgy, machinery, heat treatment, surface treatment, building materials, electronics, materials, light industry, daily chemicals, and pharmaceuticals.

[0003] At present, during the heating process of the flue gas heating furnace, the flue gas heating furnace has a poor flue gas heating effect and a low heat conversion rate, which is not conducive to use. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a flue gas heating furnace, which has the advantages of improving the flue gas heating efficiency and the heat conversion rate, and solves the problem that the current flue gas heating furnace is not conducive to use due to its poor flue gas heating effect and low heat conversion rate during the heating process.

[0006] (II) Technical solution

[0007] In order to achieve the purpose of improving the working efficiency of the flue gas heating furnace mentioned above, the present invention provides the following technical solutions: a flue gas heating furnace, comprising a heating furnace, a connected flue gas duct is arranged at one end of the heating furnace, a combustion pipe is arranged on one side of the flue gas duct, and a combustion fan is installed on the combustion pipe, a combustion chamber is arranged in the heating furnace, and connected ash discharge holes are arranged at the bottom of the combustion chamber, the heating furnace is provided with a first smoke exhaust pipe at one end of the combustion chamber, the heating furnace is provided with a cold air end on the outside of the first smoke exhaust pipe, and a cold air duct connected to the cold air end is arranged on the outer wall of the heating furnace, a first blower is arranged on the cold air duct, a connected second smoke exhaust pipe is arranged on one side of the first smoke exhaust pipe, the second smoke exhaust pipe is inserted in the mixing air pipe, and the mixing air pipe is provided with a connected air inlet pipe on the outer wall of the end away from the pipe mouth of the second smoke exhaust pipe, and the air inlet pipe is provided with a second blower.

[0008] Preferably, the connection between the flue gas duct and the combustion tube and the heating furnace is a sealed connection, and the flue gas duct and the combustion tube are parallel to each other.

[0009] Preferably, the number of the ash discharge holes is -, and the ash discharge holes are evenly distributed at equal intervals on the bottom of the heating furnace.

[0010] Preferably, the first smoke exhaust pipe is configured to be conical, and the first smoke exhaust pipe and the combustion chamber are located on the same symmetrical center line.

[0011] Preferably, the second smoke exhaust pipe is arranged in an arc shape in the air mixing pipe, and the opening of the second smoke exhaust pipe is parallel to the air mixing pipe, and the air mixing pipe and the combustion chamber are perpendicular to each other.

[0012] Preferably, the minimum diameter of the second smoke exhaust pipe is greater than the minimum diameter of the first smoke exhaust pipe.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the present invention provides a flue gas heating furnace having the following beneficial effects: the flue gas heating furnace heats and burns the flue gas in the flue gas duct in the combustion chamber through a combustion tube, the first smoke exhaust pipe increases the smoke heating time by reducing the smoke exhaust pipe diameter, the cold air pipe and the first blower discharge the smoke at the cold air end to increase the heat conversion of the smoke, and the smoke is discharged into the mixing air pipe through the second smoke exhaust pipe for mixing again, thereby improving the heat conversion rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 For the present invention Figure 1 Middle AA section view;

[0017] Figure 3 For the present invention Figure 1 Middle BB section view;

[0018] Figure 4 It is a top view of the present invention.

[0019] In the figure: 1. Heating furnace; 2. Flue gas duct; 3. Combustion pipe; 4. Combustion fan; 5. Combustion chamber; 6. Ash discharge hole; 7. First exhaust pipe; 8. Cold air terminal; 9. Cold air pipe; 10. First blower; 11. Second exhaust pipe; 12. Mixing air pipe; 13. Air inlet pipe; 14. Second blower. DETAILED DESCRIPTION

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

[0021] See also Figure 1-4, including a heating furnace 1, a connected flue gas pipe 2 is arranged at one end of the heating furnace 1, a combustion pipe 3 is arranged at one side of the flue gas pipe 2, and a combustion fan 4 is installed on the combustion pipe 3, the connection between the flue gas pipe 2 and the combustion pipe 3 and the heating furnace 1 is sealed, and the flue gas pipe 2 and the combustion pipe 3 are parallel to each other, the flue gas pipe 2 quickly discharges the flue gas into the heating furnace 1, and the flue gas in the flue gas pipe 2 is heated and burned in the combustion chamber 5 through the combustion pipe 3, and the first exhaust pipe 7 exhausts the flue gas by reducing the exhaust gas The diameter of the pipe is increased to increase the flue gas heating time. The cold air pipe 9 and the first blower 10 are discharged at the cold air end 8 to improve the heat conversion of the flue gas, so that the flue gas is discharged into the mixing air pipe 12 through the second exhaust pipe 11, and mixed with air again, thereby improving the heat conversion rate. A combustion chamber 5 is provided in the heating furnace 1, and a connected ash discharge hole 6 is provided at the bottom of the combustion chamber 5. The number of ash discharge holes 6 is 3-5, and the ash discharge holes 6 are evenly distributed at the bottom of the heating furnace 1 at an equal distance, which is conducive to collecting dust in the flue gas. The heating furnace 1 is provided with a first smoke exhaust pipe 7 at one end of the combustion chamber 5. The first smoke exhaust pipe 7 is set to be conical, and the first smoke exhaust pipe 7 and the combustion chamber 5 are located on the same symmetrical center line to ensure the stability of smoke emission. The heating furnace 1 is provided with a cold air end 8 on the outside of the first smoke exhaust pipe 7, and a cold air pipe 9 connected to the cold air end 8 is provided on the outer wall of the heating furnace 1. The cold air pipe 9 is provided with a first blower 10. A second smoke exhaust pipe 11 connected to the first smoke exhaust pipe 7 is provided on one side of the first smoke exhaust pipe 7. The second smoke exhaust pipe 11 The mixing air pipe 12 is arranged in an arc shape, and the mouth of the second smoke exhaust pipe 11 is parallel to the mixing air pipe 12, and the mixing air pipe 12 and the combustion chamber 5 are perpendicular to each other to improve the mixing effect. The second smoke exhaust pipe 11 is inserted into the mixing air pipe 12, and the mixing air pipe 12 is provided with a connected air inlet pipe 13 on the outer wall of the end away from the mouth of the second smoke exhaust pipe 11. The minimum diameter of the second smoke exhaust pipe 11 is greater than the minimum diameter of the first smoke exhaust pipe 7 to improve the heat conversion rate of the flue gas. A second blower 14 is provided on the air inlet pipe 13.

[0022] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0023] When in use, the flue gas in the flue gas duct 2 is heated and burned in the combustion chamber 5 through the combustion tube 3. The first smoke exhaust pipe 7 increases the smoke heating time by reducing the smoke exhaust pipe diameter. The cold air pipe 9 and the first blower 10 discharge the smoke at the cold air end 8 to improve the heat conversion of the smoke. The smoke is discharged into the mixing air pipe 12 through the second smoke exhaust pipe 11 and mixed again, thereby improving the heat conversion rate.

[0024] To sum up, the flue gas heating furnace achieves the advantages of improving the flue gas heating efficiency and heat conversion rate, solves the problem that the current flue gas heating furnace has poor flue gas heating effect and low heat conversion rate during the heating process, which is not conducive to use, and further meets people's usage needs.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] 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 heating furnace, comprising a heating furnace (1), characterized in that: A connected flue gas duct (2) is provided at one end of the heating furnace (1), a combustion tube (3) is provided at one side of the flue gas duct (2), and a combustion fan (4) is installed on the combustion tube (3), a combustion chamber (5) is provided in the heating furnace (1), and connected ash discharge holes (6) are provided at the bottom of the combustion chamber (5), a first flue gas exhaust pipe (7) is provided at one end of the combustion chamber (5), a cold air end (8) is provided on the outside of the first flue gas exhaust pipe (7), and the heating furnace (1) A cold air pipe (9) connected to the cold air end (8) is arranged on the outer wall of the furnace (1), and a first blower (10) is arranged on the cold air pipe (9); a second smoke exhaust pipe (11) connected to the first smoke exhaust pipe (7) is arranged on one side; the second smoke exhaust pipe (11) is inserted into the mixed air pipe (12); and an air inlet pipe (13) connected to the outer wall of the mixed air pipe (12) at one end away from the pipe opening of the second smoke exhaust pipe (11) is arranged; and a second blower (14) is arranged on the air inlet pipe (13); The first smoke exhaust pipe (7) is configured to be conical, and the first smoke exhaust pipe (7) and the combustion chamber (5) are located on the same symmetrical center line; The second smoke exhaust pipe (11) is arranged in an arc shape inside the air mixing pipe (12), and the pipe opening of the second smoke exhaust pipe (11) is parallel to the air mixing pipe (12), and the air mixing pipe (12) and the combustion chamber (5) are perpendicular to each other.

2. A flue gas heating furnace according to claim 1, characterized in that: The connection between the flue gas duct (2) and the combustion tube (3) and the heating furnace (1) is a sealed connection, and the flue gas duct (2) and the combustion tube (3) are parallel to each other.

3. The flue gas heating furnace according to claim 1, characterized in that: The number of the ash discharge holes (6) is 3-5, and the ash discharge holes (6) are evenly distributed at equal distances on the bottom of the heating furnace (1).

4. The flue gas heating furnace according to claim 1, characterized in that: The minimum diameter of the second smoke exhaust pipe (11) is greater than the minimum diameter of the first smoke exhaust pipe (7).

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