Constant-speed cooling device of annealing furnace

Abstract

The utility model provides a constant-speed cooling device for an annealing furnace, which is simple in structure, easy to manufacture and install, capable of cooling the annealing furnace at a constant speed, and low in use and maintenance cost, and in the period, an air outlet of a fan I for blowing cold air into the annealing furnace is communicated with the top of the annealing furnace through an air inlet pipe; and an air inlet of a fan II for exhausting hot air in the annealing furnace is communicated with the top of the annealing furnace through an exhaust pipe. The fan I comprises an impeller I, the impeller I is fixed on a rotating shaft I, the rotating shaft I is rotationally arranged on a shell I with a jacket through a bearing, and the jacket I is provided with an air outlet I and an air inlet I; an air outlet of the fan I is connected with two air outlet branches in parallel, one air outlet branch is an air inlet pipe, and the other air outlet branch is communicated with the air inlet I; and valves with adjustable opening degrees are arranged on the two air outlet branches.

Description

Technical Field

[0001] The utility model relates to the technical field of annealing furnaces, in particular to a temperature-lowering device for an annealing furnace. Background Art

[0002] Conventional aluminum foil annealing furnaces use water cooling to cool down the hot air from the furnace body before sending it back into the furnace body. This method requires cooling water circulation, which requires high sealing of the water channel, otherwise water leakage is likely to occur. Therefore, the cost of water cooling is low, and the cost of operation and maintenance is high. In addition, this cooling method causes drastic changes in the temperature inside the annealing furnace, which will have an adverse effect on the performance of the heat-treated workpiece, such as aluminum foil. Summary of the invention

[0003] The utility model aims to provide an annealing furnace uniform cooling device which has a simple structure, is easy to prepare and install, can realize uniform cooling of the annealing furnace, and has low use and maintenance costs.

[0004] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:

[0005] The annealing furnace uniform cooling device is used for blowing cold air into the annealing furnace. The air outlet of the fan 1 is connected to the top of the annealing furnace through the air inlet pipe, and the air inlet of the fan 2 is connected to the top of the annealing furnace through the exhaust pipe.

[0006] The above-mentioned uniform cooling device for the annealing furnace, the fan 1 includes an impeller 1, the impeller 1 is fixed on a rotating shaft 1, the rotating shaft 1 is rotatably arranged on a shell body 1 with a jacket through a bearing, the jacket 1 has an air outlet 1 and an air inlet 1; the air outlet of the fan 1 is connected with two air outlet branches in parallel, one air outlet branch is the air inlet pipe, and the other air outlet branch is connected with the air inlet 1; valves with adjustable openings are arranged on the two air outlet branches.

[0007] The above-mentioned uniform cooling device for the annealing furnace, fan 2 includes impeller 2, impeller 2 is fixed on shaft 2, shaft 2 is rotatably arranged on shell 2 with jacket through bearing, jacket 2 has air outlet 2 and air inlet 2; the air outlet of fan 1 is connected with three air outlet branches in parallel, one air outlet branch is the air inlet pipe, and the other two air outlet branches are respectively connected with air inlet 1 and air inlet 2; valves with adjustable opening are arranged on the three air outlet branches.

[0008] The above-mentioned uniform cooling device for the annealing furnace, the second fan includes a second impeller, the second impeller is fixed on a second rotating shaft, the second rotating shaft is rotatably arranged on a second housing with a jacket through a bearing, the second jacket has two air outlets and two air inlets; the air outlet of the first fan is connected in parallel with two air outlet branches, one air outlet branch is the air inlet pipe, and the other air outlet branch is connected to the second air inlet; valves with adjustable openings are arranged on the two air outlet branches.

[0009] The beneficial effects of the utility model are:

[0010] The utility model abandons the conventional water cooling and adopts air cooling, which does not require a complicated water circulation cooling system and has a low cost. When cooling is required, a small amount of high-temperature hot air in the annealing furnace is first discharged through the second fan, and then the second fan is stopped, and then the lower temperature air outside is sent into the annealing furnace through the air inlet pipe by the first fan to achieve the cooling of the annealing furnace.

[0011] When fan 1 and fan 2 are running, the temperature of shell 1 and shell 2 will increase. In order to cool shell 1 and shell 2 to increase the service life of the bearing, the utility model uses air to cool shell 1 and shell 2 having jacket 1 and jacket 2. In this way, the utility model no longer uses water cooling to cool fan 1 and fan 2, further reducing the use and maintenance costs.

[0012] Valves are provided on each air outlet branch, and the opening of each valve can be adjusted according to the required air volume, especially the amount of cold air entering the annealing furnace through the air inlet pipe, so that the temperature change of the annealing furnace can be controlled and cooled at a uniform speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the uniform cooling device of the annealing furnace.

[0014] Figure 2 Schematic diagram of the fan.

[0015] Figure 3 for Figure 2 Side view of. DETAILED DESCRIPTION

[0016] The specific implementation of the utility model is further described below according to the accompanying drawings:

[0017] like Figure 1 The annealing furnace uniform cooling device shown, the fan 1 includes an impeller 11, the impeller 11 is fixed on a rotating shaft 12, the rotating shaft 12 is rotatably arranged on a housing 16 with a jacket 15 through a bearing 14, and the jacket has an air outlet 17 and an air inlet 18.

[0018] The structure of the second fan 2 is the same as that of the first fan, and its jacket 2 has a second air outlet 27 and a second air inlet 28.

[0019] The air outlet 19 of the fan 1 is connected in parallel with three air outlet branches, one of which is the air inlet pipe 5, and the other two air outlet branches are respectively connected to the air inlet 18 and the air inlet 28. The outlet of the air inlet pipe 5 is connected to the top of the annealing furnace; the air inlet of the fan 2 2 for discharging the hot air in the annealing furnace 10 is connected to the top of the annealing furnace through the exhaust pipe 6.

[0020] The three air outlet branches are all provided with valves 9 with adjustable openings.

[0021] When cooling is required, the high-temperature hot air in the annealing furnace is first discharged through fan 2, and then fan 2 is stopped, and fan 1 is started, and the external air with lower temperature is sent into the annealing furnace through fan 1 air inlet 13 and then through air inlet pipe 5 by fan 1, so as to cool the annealing furnace.

[0022] In order to cool down fan 1 and fan 2, the cold air coming out of the air outlet of fan 1 is respectively sent into jacket 1 15 of shell 1 and jacket 2 of shell 2 through the other two air outlet branches. The cold air passes through jacket 1 15 and jacket 2, cools jacket 1 15 and jacket 2, and is then discharged.

[0023] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. The annealing furnace uniform cooling device is characterized by: The air outlet of fan 1 for blowing cold air into the annealing furnace is communicated with the top of the annealing furnace through an air inlet pipe, and the air inlet of fan 2 for exhausting hot air in the annealing furnace is communicated with the top of the annealing furnace through an exhaust pipe.

2. The annealing furnace uniform cooling device according to claim 1, characterized in that: The fan comprises an impeller, which is fixed on a rotating shaft, and the rotating shaft is rotatably arranged on a housing with a jacket through a bearing, and the jacket has an air outlet and an air inlet; the air outlet of the fan is connected with two air outlet branches in parallel, one of which is the air inlet pipe, and the other is connected with the air inlet; valves with adjustable openings are arranged on the two air outlet branches.

3. The uniform cooling device for an annealing furnace according to claim 2, characterized in that: Fan 2 includes impeller 2, which is fixed on shaft 2, and shaft 2 is rotatably arranged on housing 2 with a jacket through a bearing, and jacket 2 has air outlet 2 and air inlet 2; the air outlet of fan 1 is connected with three air outlet branches in parallel, one air outlet branch is the air inlet pipe, and the other two air outlet branches are respectively connected with air inlet 1 and air inlet 2; valves with adjustable openings are arranged on the three air outlet branches.

4. The annealing furnace uniform cooling device according to claim 1, characterized in that: Fan 2 includes impeller 2, which is fixed on shaft 2, and shaft 2 is rotatably arranged on housing 2 with a jacket through a bearing, and jacket 2 has air outlet 2 and air inlet 2; the air outlet of fan 1 is connected with two air outlet branches in parallel, one air outlet branch is the air inlet pipe, and the other air outlet branch is connected with air inlet 2; valves with adjustable openings are arranged on the two air outlet branches.

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