Air-cooled bell jar annealing furnace

Abstract

The utility model relates to the field of annealing furnaces, and particularly discloses an air-cooled bell jar annealing furnace, which comprises an outer cover, an inner cover, a base and a heating device, the outer cover and the inner cover are both mounted on the base, the inner cover is positioned inside the outer cover, the heating device is fixed on the base, and the base is further provided with an exhaust hole and an air inlet hole. One end of the exhaust hole and one end of the air inlet hole communicate with the interior of the inner cover, the top of the outer cover is provided with a first ventilation hole, a spherical fan is arranged on the first ventilation hole, the first ventilation hole is formed in the top of the outer cover, then the spherical fan is arranged on the first ventilation hole, air in the outer cover can be exchanged through the spherical fan, and therefore the cooling speed of the inner cover is increased; and the ventilation speed can be adjusted by adjusting the rotating speed of the spherical fan, so that the cooling speed of the inner cover is further controlled to adapt to different annealing temperatures of different materials.

Description

Technical Field

[0001] The utility model relates to the field of annealing furnaces, in particular to an air-cooled bell annealing furnace. Background Art

[0002] Annealing is a metal heat treatment process, which means slowly heating the metal to a certain temperature, maintaining it for a sufficient time, and then cooling it at an appropriate rate. The annealing process usually requires the use of an annealing furnace, which is also divided into trolley annealing furnaces, pit annealing furnaces, box annealing furnaces and hood annealing furnaces according to their usage scenarios. Hood annealing furnaces are generally used for annealing of plates and rigid parts in a natural environment.

[0003] Patent number CN210340977U is a bell-type annealing furnace, which introduces a bell-type annealing furnace structure. During the use of the existing annealing furnace, different cooling speeds are required for annealing plates of different materials, and most of the existing annealing furnaces cannot adjust the cooling speed arbitrarily. Therefore, an annealing furnace that can adjust the cooling speed is needed. Utility Model Content

[0004] The utility model is to solve the technical problems mentioned in the above background technology, and proposes the following technical solutions:

[0005] A wind-cooled bell-shaped annealing furnace comprises an outer cover, an inner cover, a base and a heating device, wherein the outer cover and the inner cover are both mounted on the base and the inner cover is located inside the outer cover, the heating device is fixed on the base, an exhaust hole and an air inlet are also provided on the base, one end of the exhaust hole and the air inlet are both connected to the inside of the inner cover, a first ventilation hole is provided on the top of the outer cover, and a spherical fan is provided on the first ventilation hole.

[0006] Preferably, air valves are respectively provided in the exhaust hole and the air inlet hole.

[0007] Preferably, a fan block is provided on the top of the outer cover, and fixing blocks are provided on both sides of the bottom of the spherical fan.

[0008] Preferably, a heat insulation board placement groove is provided on one side of the first ventilation hole, a circular hole is provided on one side of the heat insulation board placement groove, one end of the circular hole is communicated with the heat insulation board placement groove, a heat insulation board is provided in the heat insulation board placement groove, a push rod is connected to the side of the heat insulation board, one end of the push rod passes through the circular hole and is located outside the outer cover, a cylinder is provided on the outer cover, the cylinder is connected to a connecting plate, and one end of the push rod is fixedly connected to the connecting plate.

[0009] Preferably, a plurality of second ventilation holes are arranged on the side surface of the outer cover, and a plurality of second ventilation holes are provided with heat insulating cover plates.

[0010] The beneficial effects of the utility model are:

[0011] 1. By arranging a first ventilation hole on the top of the outer cover and then arranging a spherical fan on the first ventilation hole, the outer cover can be ventilated by the spherical fan, thereby increasing the cooling speed of the inner cover. The ventilation speed can also be adjusted by adjusting the rotation speed of the spherical fan, thereby further controlling the cooling speed of the inner cover, so as to adapt to different annealing temperatures of different materials.

[0012] 2. By arranging a heat insulation plate on the first ventilation hole, it can be ensured that during the heating stage, the first ventilation hole on the outer cover will not cause heat to escape during the heating process of the inner cover, resulting in a decrease in the heating rate.

[0013] 3. A second ventilation hole is arranged on the side of the outer cover, and a heat-insulating cover is arranged on the second ventilation hole. When the spherical fan is working, air can be transported into the outer cover to further increase the cooling speed of the inner cover.

[0014] 4. By arranging the spherical fan to be connected to the top of the outer cover through a clamping block and a fixing block, the fan can be freely disassembled and replaced, which is convenient for the inspection and cleaning of the spherical fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 for Figure 1 Enlarged image of the middle circle;

[0017] Figure 3 This is a schematic diagram of the structure of the utility model in Example 2;

[0018] Figure 4 for Figure 2 Enlarged image of the middle circle;

[0019] In the figure: 1. outer cover; 1-1. first ventilation hole; 1-2. insulation board placement groove; 1-3. round hole; 2. inner cover; 3. base; 3-1. air valve; 3-2. exhaust hole; 3-3. air inlet; 4. heating device; 5. spherical fan; 5-1. fixing block; 6. fan clamp block; 7. insulation board; 8. push rod; 9. cylinder; 10. connecting plate; 11. second ventilation hole; 12. insulation cover. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] In the description of the present utility model, it is necessary to understand 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. The connection methods described in the terms "fixed connection" and "fixed setting" include but are not limited to "welding", "riveting", "adhesion", and "threaded connection". The terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or device.

[0022] The directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0023] The spherical fan mentioned in the utility model is a non-powered wind ball produced by Shandong Luwei Ventilation Equipment Co., Ltd., which is a prior art and will not be described in detail here.

[0024] The heating device mentioned in the utility model is an ignition burner device commonly used in a bell-type annealing furnace, which is a prior art and will not be described in detail here.

[0025] Embodiment 1

[0026] Reference Figure 1-2 A wind-cooled bell annealing furnace comprises an outer cover 1, an inner cover 2, a base 3, and a heating device 4. The outer cover 1 and the inner cover 2 are both mounted on the base 3 and the inner cover 2 is located inside the outer cover 1. The heating device 4 is fixed on the base 3. An exhaust hole 3-2 and an air inlet 3-3 are also arranged on the base 3. One end of the exhaust hole 3-2 and the air inlet 3-3 are both connected to the inside of the inner cover 2. A first ventilation hole 1-1 is arranged on the top of the outer cover 1, and a spherical fan 5 is arranged on the first ventilation hole 1-1.

[0027] Preferably, air valves 3-1 are respectively provided in the exhaust hole 3-2 and the air inlet hole 3-3.

[0028] Preferably, a fan block 6 is provided on the top of the outer cover 1 , and fixing blocks 5 - 1 are provided on both sides of the bottom of the spherical fan 5 .

[0029] In actual operation, S1, first lift the outer cover 1 and the inner cover 2, then put the steel or parts to be annealed on the base 3, and then put the outer cover 1 and the inner cover 2 down and fix them on the base 3;

[0030] S2. The inner cover 2 is heated by the heating device 4 until it reaches the set temperature, and then cooled. When the cooling speed is not fast enough, the spherical fan 5 can be turned on to exchange the air in the outer cover 1, so that the cooling speed of the inner cover 2 is accelerated. During this period, the cooling rate of the inner cover 2 can be controlled by adjusting the rotation speed of the spherical fan 5.

[0031] Embodiment 2

[0032] Reference Figure 3-4 The difference between this embodiment and the first embodiment is that a heat insulation board placement groove 1-2 is arranged on one side of the first ventilation hole 1-1, a circular hole 1-3 is arranged on one side of the heat insulation board placement groove 1-2, one end of the circular hole 1-3 is connected to the heat insulation board placement groove 1-2, a heat insulation board 7 is arranged in the heat insulation board placement groove 1-2, a push rod 8 is connected to the side of the heat insulation board 7, one end of the push rod 8 passes through the circular hole 1-3 and is located outside the outer cover 1, a cylinder 9 is arranged on the outer cover 1, the cylinder 9 is connected to the connecting plate 10, and one end of the push rod 8 is fixedly connected to the connecting plate 10.

[0033] Preferably, a plurality of second ventilation holes 11 are arranged on the side of the outer cover 1 , and a heat insulation cover plate 12 is arranged on the plurality of second ventilation holes 11 .

Claims

1. An air-cooled bell annealing furnace, comprising an outer cover (1), an inner cover (2), a base (3), and a heating device (4), characterized in that: The outer cover (1) and the inner cover (2) are both mounted on the base (3) and the inner cover (2) is located inside the outer cover (1); the heating device (4) is fixed on the base (3); an exhaust hole (3-2) and an air inlet (3-3) are also provided on the base (3); one end of each of the exhaust hole (3-2) and the air inlet (3-3) are connected to the inside of the inner cover (2); a first ventilation hole (1-1) is provided on the top of the outer cover (1); and a spherical fan (5) is provided on the first ventilation hole (1-1).

2. The air-cooled bell annealing furnace according to claim 1, characterized in that: The exhaust hole (3-2) and the air inlet hole (3-3) are respectively provided with air valves (3-1).

3. The air-cooled bell annealing furnace according to claim 2, characterized in that: A fan clamping block (6) is arranged on the top of the outer cover (1), and fixing blocks (5-1) are arranged on both sides of the bottom of the spherical fan (5).

4. The air-cooled bell annealing furnace according to claim 1, characterized in that: A heat insulation board placement groove (1-2) is arranged on one side of the first ventilation hole (1-1), a circular hole (1-3) is arranged on one side of the heat insulation board placement groove (1-2), one end of the circular hole (1-3) is communicated with the heat insulation board placement groove (1-2), a heat insulation board (7) is arranged in the heat insulation board placement groove (1-2), a push rod (8) is connected to the side of the heat insulation board (7), one end of the push rod (8) passes through the circular hole (1-3) and is located outside the outer cover (1), a cylinder (9) is arranged on the outer cover (1), the cylinder (9) is connected to a connecting plate (10), and one end of the push rod (8) is fixedly connected to the connecting plate (10).

5. The air-cooled bell annealing furnace according to claim 4, characterized in that: A plurality of second ventilation holes (11) are arranged on the side of the outer cover (1), and a heat insulation cover plate (12) is arranged on the plurality of second ventilation holes (11).

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