Furnace body cooling device for gas annealing process

Abstract

The utility model discloses a gas annealing process furnace body cooling device which comprises a furnace body assembly, the furnace body assembly comprises a heating furnace body, rails are evenly arranged on the inner bottom face of the heating furnace body, guide wheels are evenly arranged on the lower surface of the heating furnace body, and two preheaters are fixed on the upper surface of the heating furnace body. Smoke inlets of the preheaters are communicated with the upper end in the heating furnace body, smoke outlets of the two preheaters are communicated with a smoke exhaust pipe through guide pipes, upper cold air inlets of the two preheaters are both connected with the air cooler assembly, cold air outlets of the preheaters are connected with air outlet pipes, and communicating pieces are arranged between the air outlet pipes and outlets of the air cooler assembly. The gas annealing process furnace body cooling device is simple in structure and easy and convenient to operate, a valve is directly added in a burner gas pipeline system, and the purpose of controlling the cooling speed is achieved by opening and closing the valve.

Description

Technical Field

[0001] The utility model relates to the technical field of gas furnaces, in particular to a cooling device for a gas annealing process furnace body. Background Technique

[0002] Annealing is a metal heat treatment process, which means heating the metal slowly to a certain temperature, maintaining for a sufficient time, and then cooling at an appropriate speed. The purpose is to reduce hardness, improve machinability; eliminate residual stress, stabilize dimensions, reduce deformation and crack tendency; refine grains, adjust the structure, and eliminate tissue defects. Cooling process controllable system design: Most heat treatment furnaces mainly achieve controllable cooling speed by increasing the exhaust air in the furnace, which requires an additional set of ventilation and cooling systems, resulting in an increase in manufacturing cost and floor area. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects, provide a cooling device for a gas annealing process furnace body, with a simple structure and convenient operation. A valve is directly added to the burner gas pipeline system, and by opening and closing the valve, the purpose of controlling the cooling speed can be achieved, effectively solving the problems in the background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A cooling device for a gas annealing process furnace body, including a furnace body assembly. The furnace body assembly includes a heating furnace body, on the inner bottom surface of which tracks are evenly arranged. Guide wheels are evenly arranged on the lower surface of the heating furnace body. Two preheaters are fixed on the upper surface of the heating furnace body. The flue gas inlets of the preheaters are communicated with the upper end inside the heating furnace body. The flue gas outlets of the two preheaters are communicated with the exhaust pipe through a conduit. The upper cold air inlets of the two preheaters are both connected to a cold air blower assembly. A valve is arranged between the cold air blower assembly and the preheater. The cold air outlet of the preheater is connected to an air outlet pipe. A connecting member is arranged between the air outlet pipe and the outlet of the cold air blower assembly. A blowing member is arranged on the inner bottom surface of the heating furnace body. The inlet of the blowing member is connected to the outlet of the air outlet pipe. A flue gas return pipeline communicated with the outlet of the cold air blower assembly is arranged on the side of the exhaust pipe. A manual valve is arranged on the flue gas return pipeline.

[0005] Further, the blowing member includes a diffuser pipe arranged on the inner bottom surface of the heating furnace body. The diffuser pipe is located between the two tracks and is lower than the upper surface of the tracks. The air inlets of the diffuser pipes are all connected to a tree-shaped pipe. The upper end inlet of the tree-shaped pipe is connected to the upper end of the air outlet pipe.

[0006] Furthermore, the air cooler assembly includes a blower. The outlet of the blower is connected to a Y-shaped duct, and the two outlets of the Y-shaped duct are respectively connected to the preheaters. The blower can blow air into the interiors of the two preheaters, thereby blowing air into the preheaters. The preheated air enters the blowing member, and through the blowing member, air can be blown into the heating furnace body to blow-cool the workpiece inside the heating furnace body, thereby annealing the workpiece.

[0007] Furthermore, the connecting member includes a connecting short pipe. The connecting short pipe connects the Y-shaped duct and the air outlet pipe. A high-temperature pneumatic butterfly valve is provided on the connecting short pipe. When the temperature difference between the inside and outside of the heating furnace body is within a specified range, the high-temperature pneumatic butterfly valve is opened, so that the gas blown out by the air cooler assembly directly enters the inside of the blowing member, thereby further cooling the workpiece.

[0008] Furthermore, the preheater includes a preheating housing. Four groups of heat exchange pipes are provided inside the preheating housing, and the four groups of heat exchange pipes are connected in an S-shaped structure. When the air cooler assembly directly blows gas into the heat exchange pipes, the gas inside the heat exchange pipes is preheated by the flue gas inside the preheating housing, thereby slowly cooling the workpiece.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows: The blower can blow air into the interiors of the two preheaters, thereby blowing air into the preheaters. When the air cooler assembly directly blows gas into the heat exchange pipes, the gas inside the heat exchange pipes is preheated by the flue gas inside the preheating housing, thereby slowly cooling the workpiece. The preheated air enters the blowing member, and through the blowing member, air can be blown into the heating furnace body to blow-cool the workpiece inside the heating furnace body, thereby annealing the workpiece. When the temperature difference between the inside and outside of the heating furnace body is within a specified range, the high-temperature pneumatic butterfly valve is opened, so that the gas blown out by the air cooler assembly directly enters the inside of the blowing member, thereby further cooling the workpiece. The cooling device for the gas annealing process furnace body has a simple structure and is easy to operate. A valve is directly added to the burner gas pipeline system, and by opening and closing the valve, the purpose of controlling the cooling speed is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of the present utility model;

[0011] Figure 2 is a top view structural diagram of the present utility model;

[0012] Figure 3 is a top view structural diagram of the present utility model;

[0013] Figure 4 is a top view structural diagram of the present utility model.

[0014] In the figure: 1 furnace body assembly, 11 heating furnace body, 12 track, 13 guide wheel, 2 preheater, 21 preheating housing, 22 heat exchange tube, 3 exhaust pipe, 4 cold air blower assembly, 41 blower, 42 Y-shaped duct, 5 air outlet pipe, 6 connecting piece, 61 connecting short pipe, 62 high-temperature pneumatic butterfly valve, 7 blowing piece, 71 air diffuser pipe, 72 tree-shaped pipe, 8 flue gas return pipeline. Detailed implementation manners

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0016] Please refer to Figures 1-4, the present utility model provides a technical solution: a cooling device for a gas annealing process furnace body, including a furnace body assembly 1. The furnace body assembly 1 includes a heating furnace body 11. The inner bottom surface of the heating furnace body 11 is evenly provided with tracks 12, and the lower surface of the heating furnace body 11 is evenly provided with guide wheels 13. Two preheaters 2 are fixed on the upper surface of the heating furnace body 11. The flue gas inlet of the preheater 2 is communicated with the upper end inside the heating furnace body 11. The flue gas outlets of the two preheaters 2 are communicated with the exhaust pipe 3 through a conduit. The upper cold air inlets of the two preheaters 2 are both connected to a cold air blower assembly 4. A valve is provided between the cold air blower assembly 4 and the preheater 2. When annealing, the valve is opened. The cold air outlet of the preheater 2 is connected to an air outlet pipe 5. A connecting member 6 is provided between the air outlet pipe 5 and the outlet of the cold air blower assembly 4. The inner bottom surface of the heating furnace body 11 is provided with a blowing member 7. The inlet of the blowing member 7 is connected to the outlet of the air outlet pipe 5. A flue gas return pipe 8 communicated with the outlet of the cold air blower assembly 4 is provided on the side of the exhaust pipe 3. A manual valve is provided on the flue gas return pipe 8. When the manual valve is opened, the flue gas is blown back into the inside of the blowing member 7 through the cold air blower assembly 4, and then the flue gas is directly dispersed into the inside of the heating furnace body 11 through the blowing member 7. The blowing member 7 includes a gas dispersion pipe 71 provided on the inner bottom surface of the heating furnace body 11. The gas dispersion pipe 71 is located between the two tracks 12, and the gas dispersion pipe 71 is lower than the upper surface of the tracks 12. The air inlets of the gas dispersion pipe 71 are all connected to a tree-shaped pipe 72. The upper end inlet of the tree-shaped pipe 72 is connected to the upper end of the air outlet pipe 5. The cold air blower assembly 4 includes a blower 41. The outlet of the blower 41 is connected to a Y-shaped conduit 42. The two outlets of the Y-shaped conduit 42 are respectively connected to the preheater 2. Through the blower 41, air can be blown into the inside of the two preheaters 2, so as to blow air into the inside of the preheater 2. The preheated air enters the inside of the blowing member 7, and through the blowing member 7, air can be blown into the inside of the heating furnace body 11, so as to blow and cool the workpieces inside the heating furnace body 11, and thus anneal the workpieces. The connecting member 6 includes a connecting short pipe 61. The connecting short pipe 61 connects the Y-shaped conduit 42 and the air outlet pipe 5. A high-temperature pneumatic butterfly valve 62 is provided on the connecting short pipe 61. When the temperature difference between the inside and outside of the heating furnace body 11 is within a specified range, the high-temperature pneumatic butterfly valve 62 is opened, so that the gas blown out by the cold air blower assembly 4 directly enters the inside of the blowing member 7, so as to further cool the workpieces. The preheater 2 includes a preheating housing 21. Four groups of heat exchange tubes 22 are provided inside the preheating housing 21. The four groups of heat exchange tubes 22 are connected in an S-shaped structure. When the cold air blower assembly 4 directly blows gas into the inside of the heat exchange tubes 22, the gas inside the heat exchange tubes 22 is preheated by the flue gas inside the preheating housing 21, so as to slowly cool the workpieces. This cooling device for the gas annealing process furnace body has a simple structure and is easy to operate. A valve is directly added to the burner gas pipeline system. By opening and closing the valve, the purpose of controlling the cooling speed is achieved.

[0017] In use: The blower 41 can blow air into the interiors of the two preheaters 2, so as to blow air into the interiors of the preheaters 2. When the cold air blower assembly 4 directly blows gas into the interior of the heat exchange tubes 22, the gas inside the heat exchange tubes 22 is preheated by the flue gas inside the preheating housing 21, so as to slowly cool the workpiece. The preheated air enters the blowing member 7, and the blowing member 7 can blow air into the interior of the heating furnace body 11, so as to blow and cool the workpiece inside the heating furnace body 11, and thus anneal the workpiece. When the temperature difference between the interior and the exterior of the heating furnace body 11 is within the specified range, the high-temperature pneumatic butterfly valve 62 is opened, so that the gas blown out by the cold air blower assembly 4 directly enters the interior of the blowing member 7, so as to further cool the workpiece.

[0018] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A gas annealing process furnace body cooling device, comprising a furnace body assembly (1), characterized in that: The furnace body assembly (1) includes a heating furnace body (11). The inner bottom surface of the heating furnace body (11) is evenly provided with tracks (12). The lower surface of the heating furnace body (11) is evenly provided with guide wheels (13). Two preheaters (2) are fixed on the upper surface of the heating furnace body (11). The flue gas inlet of the preheater (2) is communicated with the upper end inside the heating furnace body (11). The flue gas outlets of the two preheaters (2) are communicated with the exhaust pipe (3) through a conduit. The upper cold air inlets of the two preheaters (2) are both connected to the cold air blower assembly (4). A valve is provided between the cold air blower assembly (4) and the preheater (2). The cold air outlet of the preheater (2) is connected to an air outlet pipe (5). A connecting member (6) is provided between the air outlet pipe (5) and the outlet of the cold air blower assembly (4). A blowing member (7) is provided on the inner bottom surface of the heating furnace body (11). The inlet of the blowing member (7) is connected to the outlet of the air outlet pipe (5). A flue gas return pipe (8) communicating with the outlet of the cold air blower assembly (4) is provided on the side of the exhaust pipe (3). A manual valve is provided on the flue gas return pipe (8).

2. The gas annealing process furnace body cooling device according to claim 1, characterized in that: The blowing member (7) includes a diffuser pipe (71) arranged on the inner bottom surface of the heating furnace body (11). The diffuser pipe (71) is located between the two tracks (12), and the diffuser pipe (71) is lower than the upper surface of the tracks (12). The air inlets of the diffuser pipe (71) are all connected to a tree-shaped pipe (72). The upper end inlet of the tree-shaped pipe (72) is connected to the upper end of the air outlet pipe (5).

3. A gas annealing process furnace body cooling device according to claim 1, characterized in that: The cold air blower assembly (4) includes a blower (41). The outlet of the blower (41) is connected to a Y-shaped conduit (42). The two outlets of the Y-shaped conduit (42) are respectively connected to the preheater (2).

4. A gas annealing process furnace body cooling device according to claim 3, characterized in that: The connecting member (6) includes a connecting short pipe (61). The connecting short pipe (61) connects the Y-shaped conduit (42) and the air outlet pipe (5). A high-temperature pneumatic butterfly valve (62) is provided on the connecting short pipe (61).

5. A cooling device for a gas annealing process furnace body according to claim 1, characterized in that: The preheater (2) includes a preheating outer shell (21). Four groups of heat exchange pipes (22) are arranged inside the preheating outer shell (21). The four groups of heat exchange pipes (22) are connected in an S-shaped structure.

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