Efficient heat exchange mechanism of full-hydrogen bell-type annealing furnace

Abstract

The utility model discloses a full-hydrogen bell-type annealing furnace efficient heat exchange mechanism which comprises an annealing furnace body, a heat exchange cylinder is arranged on one side of the top end of the annealing furnace body, a first gas hood is arranged at the bottom end of the heat exchange cylinder, the bottom end of the first gas hood is connected with an exhaust pipe on the annealing furnace body, and a second gas hood is arranged at the top end of the heat exchange cylinder. A smoke exhaust pipe is arranged at the top end of the second air hood, an air inlet pipe is arranged on the outer wall of the heat exchange cylinder, an air blower is arranged on the side, away from the heat exchange cylinder, of the air inlet pipe, and an air output pipe is arranged on the outer wall of the heat exchange cylinder. The annealing furnace has the beneficial effects that when high-temperature gas exhausted by the annealing furnace main body penetrates through the heat exchange pipe, the inner wall of the heat exchange pipe can be automatically cleaned by arranging the wall cleaning assembly, and smoke dust particles in the high-temperature gas are prevented from being attached to the inner wall of the heat exchange pipe to affect the heat exchange efficiency of the heat exchange pipe; and meanwhile, the wall cleaning assembly automatically runs through high-temperature gas flow through cooperation of propeller blades and scraping brushes, external power is not needed, and use is more energy-saving and convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchange technical field, concretely related to a full hydrogen bell type annealing furnace high -efficient heat exchange mechanism. BACKGROUND

[0002] The trolley type annealing furnace is a national standard energy-saving type periodic operation furnace, has super energy-saving structure, adopts fiber structure, saves electricity by 30%, adopts composite high alumina porcelain nail group, trolley anti-collision sealing brick, automatic sealing trolley and furnace door, integrated continuous rail, does not need foundation installation, can use on horizontal ground, is mainly used for quenching, annealing, aging of high chromium, high manganese steel castings, nodular cast iron, rolls, steel ball, 45 steel, stainless steel and heat treatment of various mechanical parts, domestic annealing furnace generally uses natural gas or coke oven gas as fuel, burns in the radiation pipe after reasonable proportioning with air, heats strip steel as heat source, and the flue gas is discharged after the combustion of the coal gas, in the prior art, the air preheating device is arranged at the exhaust end, high-temperature tail gas is used to preheat the air, so that the combustion efficiency is improved.

[0003] According to the annealing furnace auxiliary running device disclosed by Chinese patent CN202022000495.1, the application comprises an annealing furnace body and a heat exchange bin, the heat exchange bin is arranged on one side of the annealing furnace body, a layered heat exchange structure is arranged in the heat exchange bin, one end of the layered heat exchange structure is communicated with the exhaust end of the annealing furnace body, and the other end is communicated with the exhaust pipe; one end of the heat exchange bin is provided with a cold air inlet end, and the other end is communicated with the combustion chamber inlet end of the annealing furnace body; a temperature monitoring structure is arranged in the heat exchange bin; the layered heat exchange structure is arranged at the exhaust end of the annealing furnace body; high-temperature tail gas enters from one end of the layered heat exchange structure, and cold air enters from the other end of the layered heat exchange structure in the opposite direction, so that the heat of the cold air and the high-temperature tail gas is fully exchanged, the temperature of the cold air is uniformly increased, and the combustion heat efficiency of the annealing furnace is improved. When the high-temperature gas discharged by the existing annealing furnace heat exchange structure passes through the heat exchange cylinder, the smoke dust particles in the gas will adhere to the inner wall of the heat exchange cylinder, and when the dirt on the inner wall of the heat exchange cylinder increases, the heat exchange efficiency will be reduced.

[0004] At present, no effective solution has been proposed for the problems in the related art. UTILITY MODEL CONTENT

[0005] In view of the problems in the related art, the utility model provides a full hydrogen bell type annealing furnace high-efficiency heat exchange mechanism to overcome the above technical problems existing in the prior art.

[0006] Therefore, the utility model adopts the specific technical scheme as follows:

[0007] The utility model provides a kind of high-efficiency heat exchange mechanism of full hydrogen bell-type annealing furnace, including annealing furnace main body, one side of the top end of the annealing furnace main body is equipped with heat exchange cylinder, the bottom of the heat exchange cylinder is equipped with gas cover one, the bottom of the gas cover one is connected with the exhaust pipe on the annealing furnace main body, the top end of the heat exchange cylinder is equipped with gas cover two, the top end of the gas cover two is equipped with flue gas pipe, the outer wall of the heat exchange cylinder is equipped with air inlet pipe, the side of the air inlet pipe away from the heat exchange cylinder is equipped with air blower, the outer wall of the heat exchange cylinder is equipped with air output pipe, the side of the air output pipe away from the heat exchange cylinder is connected with the air inlet pipe on the annealing furnace main body, the heat exchange cylinder is equipped with a plurality of evenly distributed heat exchange pipes, the both ends of the heat exchange pipe are extended to the outside of the heat exchange cylinder, and the heat exchange pipe is equipped with wall cleaning assembly.

[0008] As preferred, the gas cover one and the gas cover two are threadedly connected with the heat exchange cylinder.

[0009] As preferred, the air inlet pipe is communicated with the air blower outlet pipe.

[0010] As preferred, the wall cleaning assembly includes the mounting ring provided at the top end of the heat exchange pipe, the U-shaped frame provided at the top end of the mounting ring, the rotating shaft provided at the inner top end of the U-shaped frame, the propeller blade connected with the rotating shaft extended into the mounting ring at the bottom end, the connecting rod extended into the heat exchange pipe provided at the bottom end of the propeller blade, and the symmetrically arranged and matched scraping brushes provided at the both sides of the connecting rod.

[0011] As preferred, the mounting ring is threadedly connected with the outer wall of the heat exchange pipe.

[0012] As preferred, the scraping brushes are connected with the connecting rod through the connecting block.

[0013] The utility model has the advantages that: when the high-temperature gas discharged by the annealing furnace main body passes through the heat exchange pipe, the wall cleaning assembly is automatically arranged to clean the inner wall of the heat exchange pipe, so that the smoke dust particles in the high-temperature gas are prevented from adhering to the inner wall of the heat exchange pipe and affecting the heat exchange efficiency, and the wall cleaning assembly is automatically operated by the cooperation of the propeller blade and the scraping brush through the high-temperature gas flow, without external power, so that the utility model is more energy-saving and convenient. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creating labor.

[0015] Figure 1It is a whole structure schematic diagram of a high-efficiency heat exchange mechanism of a full-hydrogen bell-type annealing furnace according to an embodiment of the utility model.

[0016] Figure 2 It is a structure schematic diagram of a heat exchange cylinder in a high-efficiency heat exchange mechanism of a full-hydrogen bell-type annealing furnace according to an embodiment of the utility model.

[0017] Figure 3 It is a sectional view of a heat exchange cylinder in a high-efficiency heat exchange mechanism of a full-hydrogen bell-type annealing furnace according to an embodiment of the utility model.

[0018] Figure 4 It is a structure schematic diagram of a mounting ring in a high-efficiency heat exchange mechanism of a full-hydrogen bell-type annealing furnace according to an embodiment of the utility model.

[0019] Figure 5 It is Figure 4 The local enlarged schematic diagram of B in the middle.

[0020] In the figure,

[0021] 1, annealing furnace main body;2, heat exchange cylinder;3, gas cover one;4, exhaust pipe;5, gas cover two;6, smoke exhaust pipe;7, air inlet pipe;8, air blower;9, air output pipe;10, air inlet pipe;11, heat exchange pipe;12, mounting ring;13, U-shaped frame;14, rotating shaft;15, helical blade;16, connecting rod;17, scraper;18, connecting block. DETAILED DESCRIPTION

[0022] To further illustrate the embodiments, the utility model provides with drawings, these drawings are a part of the utility model disclosure, it mainly used to illustrate the embodiment, and can cooperate with the relevant description of the specification to explain the operation principle of the embodiment, cooperate with reference to these contents, the person skilled in the art should be able to understand other possible implementation ways and the advantages of the utility model, the components in the figure are not drawn according to scale, and similar component symbols are usually used to represent similar components.

[0023] According to the embodiment of the utility model, a high-efficiency heat exchange mechanism of a full-hydrogen bell-type annealing furnace is provided.

[0024] Embodiment one;

[0025] As Figures 1-5As shown, according to the full hydrogen cover type annealing furnace efficient heat exchange mechanism of the utility model embodiment, including annealing furnace main body 1, annealing furnace main body 1 top one side is equipped with heat exchange cylinder 2, heat exchange cylinder 2 bottom is equipped with gas cover one 3, gas cover one 3 bottom is connected with the exhaust pipe 4 on annealing furnace main body 1, heat exchange cylinder 2 top is equipped with gas cover two 5, gas cover two 5 top is equipped with flue gas pipe 6, heat exchange cylinder 2 outer wall is equipped with air inlet pipe 7, air inlet pipe 7 is equipped with air blower 8 away from one side of heat exchange cylinder 2, heat exchange cylinder 2 outer wall is equipped with air output pipe 9, air output pipe 9 is connected with the air inlet pipe 10 on annealing furnace main body 1 away from one side of heat exchange cylinder 2, heat exchange cylinder 2 is equipped with several evenly distributed heat exchange pipes 11, both ends of heat exchange pipe 11 extend to heat exchange cylinder 2 outside, heat exchange pipe 11 is equipped with wall cleaning assembly.

[0026] Embodiment two;

[0027] As Figures 1-5 shown, including annealing furnace main body 1, annealing furnace main body 1 top one side is equipped with heat exchange cylinder 2, heat exchange cylinder 2 bottom is equipped with gas cover one 3, gas cover one 3 bottom is connected with the exhaust pipe 4 on annealing furnace main body 1, heat exchange cylinder 2 top is equipped with gas cover two 5, gas cover two 5 top is equipped with flue gas pipe 6, heat exchange cylinder 2 outer wall is equipped with air inlet pipe 7, air inlet pipe 7 is equipped with air blower 8 away from one side of heat exchange cylinder 2, heat exchange cylinder 2 outer wall is equipped with air output pipe 9, air output pipe 9 is connected with the air inlet pipe 10 on annealing furnace main body 1 away from one side of heat exchange cylinder 2, heat exchange cylinder 2 is equipped with several evenly distributed heat exchange pipes 11, both ends of heat exchange pipe 11 extend to heat exchange cylinder 2 outside, heat exchange pipe 11 is equipped with wall cleaning assembly. The gas cover one 3 and the gas cover two 5 are connected with the heat exchange cylinder 2 by screw thread. The air inlet pipe 7 is connected with the air outlet pipe of the air blower 8. The wall cleaning assembly includes the mounting ring 12 provided at the top end of the heat exchange pipe 11, the U-shaped frame 13 provided at the top end of the mounting ring 12, the rotating shaft 14 provided at the inner top end of the U-shaped frame 13, the propeller blade 15 connected with the bottom end of the rotating shaft 14 extending into the mounting ring 12, the connecting rod 16 provided at the bottom end of the propeller blade 15 extending into the heat exchange pipe 11, and the scraper 17 provided at the two sides of the connecting rod 16 symmetrically and matched with the heat exchange pipe 11. The mounting ring 12 is connected with the outer wall of the heat exchange pipe 11 by screw thread. The scraper 17 is connected with the connecting rod 16 by the connecting block 18.

[0028] In actual application, the annealing furnace body 1 discharges high-temperature gas through the exhaust pipe 4 into the gas cover 3, the high-temperature gas entering the gas cover 3 enters the heat exchange pipe 11 in succession, at this time, the air blower 8 sends external air through the air inlet pipe 7 into the heat exchange cylinder 2 to exchange heat with the heat exchange pipe 11, so that the air is heated, the heated air flows to the air inlet pipe 10 through the air outlet pipe 9, and then the heated air flows from the air inlet pipe 10 into the combustion chamber in the annealing furnace body, when the high-temperature gas discharged from the annealing furnace body 1 passes through the heat exchange pipe 11, the spiral blade 15 is automatically rotated, at this time, the spiral blade 15 drives the connecting rod 16 to rotate, the connecting rod 16 drives the scraper 17 to rotate to scrape and clean the inner wall of the heat exchange pipe 11, so that dust is prevented from accumulating on the inner wall of the heat exchange pipe 11, when the scraper 17 needs to be cleaned, the mounting ring 12 is rotated to be separated from the heat exchange pipe 11, the mounting ring 12 drives the spiral blade 15 and the scraper 17 to move out of the heat exchange pipe 11, when the high-temperature gas discharged from the annealing furnace body passes through the heat exchange pipe, the wall cleaning assembly is arranged to automatically clean the inner wall of the heat exchange pipe, so that smoke dust particles in the high-temperature gas are prevented from adhering to the inner wall of the heat exchange pipe and affecting the heat exchange efficiency, at the same time, the wall cleaning assembly is automatically operated by the cooperation of the spiral blade and the scraper through the flow of high-temperature gas, without external power, and is more energy-saving and convenient to use.

[0029] In summary, according to the above technical scheme of the utility model, when the high-temperature gas discharged from the annealing furnace body passes through the heat exchange pipe, the wall cleaning assembly is arranged to automatically clean the inner wall of the heat exchange pipe, so that smoke dust particles in the high-temperature gas are prevented from adhering to the inner wall of the heat exchange pipe and affecting the heat exchange efficiency, at the same time, the wall cleaning assembly is automatically operated by the cooperation of the spiral blade and the scraper through the flow of high-temperature gas, without external power, and is more energy-saving and convenient to use.

[0030] The above only describes preferred embodiments of the utility model, and is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-efficiency heat exchange mechanism for a full-hydrogen bell-type annealing furnace, characterized in that, The application relates to an annealing furnace, which comprises an annealing furnace body (1), a heat exchange cylinder (2) arranged at one side of the top end of the annealing furnace body (1), a gas cover (3) arranged at the bottom end of the heat exchange cylinder (2), an exhaust pipe (4) arranged on the annealing furnace body (1) and connected with the bottom end of the gas cover (3), a gas cover (5) arranged at the top end of the heat exchange cylinder (2), an exhaust pipe (6) arranged at the top end of the gas cover (5), an air inlet pipe (7) arranged on the outer wall of the heat exchange cylinder (2), a blower (8) arranged on the side, away from the heat exchange cylinder (2), of the air inlet pipe (7), an air outlet pipe (9) arranged on the outer wall of the heat exchange cylinder (2), an air inlet pipe (10) arranged on the annealing furnace body (1) and connected with the side, away from the heat exchange cylinder (2), of the air outlet pipe (9), a plurality of heat exchange pipes (11) evenly arranged in the heat exchange cylinder (2) and extending out of the heat exchange cylinder (2) at both ends, and a wall cleaning assembly arranged in the heat exchange pipes (11).

2. The high-efficiency heat exchange mechanism of a full-hydrogen bell-type annealing furnace according to claim 1, characterized in that, The gas cover (3) and the gas cover (5) are threadedly connected with the heat exchange cylinder (2).

3. The high-efficiency heat exchange mechanism of a full-hydrogen bell-type annealing furnace according to claim 1, characterized in that, The air inlet pipe (7) is communicated with the air outlet pipe of the blower (8).

4. The high-efficiency heat exchange mechanism of a full-hydrogen bell-type annealing furnace according to claim 1, characterized in that, The wall cleaning assembly comprises a mounting ring (12) arranged at the top end of the heat exchange pipe (11), a U-shaped frame (13) arranged at the top end of the mounting ring (12), a rotating shaft (14) arranged at the inner top end of the U-shaped frame (13), a propeller blade (15) arranged at the bottom end of the rotating shaft (14) and extending into the mounting ring (12), a connecting rod (16) arranged at the bottom end of the propeller blade (15) and extending into the heat exchange pipe (11), and a scraper (17) arranged on the two sides of the connecting rod (16) and matched with the heat exchange pipe (11).

5. The high-efficiency heat exchange mechanism of a full-hydrogen bell-type annealing furnace according to claim 4, characterized in that, The mounting ring (12) is threadedly connected with the outer wall of the heat exchange pipe (11).

6. The high-efficiency heat exchange mechanism of a full-hydrogen bell-type annealing furnace according to claim 4, characterized in that, The scraper (17) is connected with the connecting rod (16) through a connecting block (18).

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