Waste heat utilization device of double-layer annealing furnace and double-layer annealing furnace

Abstract

The utility model discloses a waste heat utilization device of a double-layer annealing furnace and the double-layer annealing furnace, which comprises a heat exchange chamber, a first driving roller positioned at the upper part in the heat exchange chamber and a second driving roller positioned at the lower part in the heat exchange chamber, one end of the circulating fan is connected above the heat exchange chamber, and the other end of the circulating fan is connected below the heat exchange chamber through a heat exchange pipe to form a heat exchange channel, so that heat on a discharged workpiece can be used for preheating a fed workpiece.

Description

Technical Field

[0001] The utility model relates to the technical field of annealing furnaces, in particular to a waste heat utilization device of a double-layer annealing furnace and the double-layer annealing furnace. Background Art

[0002] Double-layer annealing furnace is an industrial equipment mainly used for heat treatment of materials, such as annealing, tempering, etc. This furnace is usually composed of two interconnected furnaces, the upper layer is the feeding layer, and the lower layer is the discharging layer. It occupies a small area and is more practical.

[0003] When the double-layer annealing furnace is in use, the workpieces conveyed from the discharge layer are heat-treated workpieces with high temperatures, and are generally placed outside for natural cooling. However, this cooling method is relatively wasteful and does not utilize the residual heat of the workpieces after heat treatment. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a waste heat utilization device of a double-layer annealing furnace, which can use the heat on the discharged workpieces to preheat the fed workpieces.

[0005] The utility model adopts the following technical solutions:

[0006] A waste heat utilization device for a double-layer annealing furnace includes a heat exchange chamber, a first drive roller located above the interior of the heat exchange chamber, and a second drive roller located below the interior of the heat exchange chamber. A circulating fan is provided on the heat exchange chamber, one end of the circulating fan is connected to the top of the heat exchange chamber and the other end is connected to the bottom of the heat exchange chamber through a heat exchange pipe to form a heat exchange channel.

[0007] Preferably, the heat exchange tube is located outside the heat exchange chamber.

[0008] Preferably, the first driving roller is a feed roller, one side of which is provided with a feed port; the second driving roller is a discharge roller, one side of which is provided with a discharge port.

[0009] Preferably, a material frame for placing workpieces is provided on the first driving roller and the second driving roller.

[0010] Preferably, the inner wall of the heat exchange chamber is provided with a thermal insulation layer.

[0011] A double-layer annealing furnace comprises a waste heat utilization device.

[0012] Compared with the prior art, the utility model has the following advantages: the utility model provides a waste heat utilization device for a double-layer annealing furnace, including a heat exchange chamber, a first drive roller and a second drive roller, one end of the circulating fan is connected to the top of the heat exchange chamber and the other end is connected to the bottom of the heat exchange chamber through a heat exchange pipe to form a heat exchange channel, so that the heat on the discharge workpiece can be used for preheating the feed workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of a waste heat utilization device.

[0014] Figure 2 It is a side view of the waste heat utilization device.

[0015] In the figure, there are a heat exchange chamber 1, a first driving roller 2, a second driving roller 3, a circulating fan 4, a heat exchange tube 5, and a material frame 6. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of the technical solution of the utility model, a detailed description is given below in conjunction with the accompanying drawings and specific embodiments.

[0017] Example 1

[0018] like Figure 1-2 As shown, a waste heat utilization device of a double-layer annealing furnace includes a heat exchange chamber 1, a first driving roller 2 located above the interior of the heat exchange chamber 1, and a second driving roller 3 located below the interior of the heat exchange chamber 1, wherein the first driving roller 2 is a feed roller with a feed port on one side, and the second driving roller 3 is a discharge roller with a discharge port on one side; a driving device is provided on the heat exchange chamber 1, a sprocket is provided on the first driving roller 2, and multiple first driving rollers 2 can be connected by chains, and one first driving roller 2 is driven to rotate by the driving device, thereby realizing that multiple first driving rollers 2 rotate simultaneously to convey workpieces, and the working principle of the second driving roller 3 is similar to that of the first driving roller 2, so it is not repeated.

[0019] The heat exchange chamber 1 is provided with a circulating fan 4, one end of which is connected to the top of the heat exchange chamber 1 and the other end is connected to the bottom of the heat exchange chamber 1 through a heat exchange pipe 5 to form a heat exchange channel. Since the workpiece on the second driving roller 3 is a workpiece after heat treatment and has a relatively high heat content, in the heat exchange chamber 1, due to the action of the circulating fan 4, the heat of the workpiece flows toward the workpiece on the first driving roller 2 along with the airflow and preheats it, thereby accelerating the cooling of the workpiece on the second driving roller 3 and realizing the utilization of waste heat.

[0020] A material frame 6 for placing the workpiece is disposed on the first driving roller 2 and the second driving roller 3 , that is, the workpiece is placed on the material frame 6 and moves along with the movement of the first driving roller 2 and the second driving roller 3 .

[0021] The inner wall of the heat exchange chamber 1 is provided with a heat insulation layer to reduce heat loss in the heat exchange chamber 1.

[0022] A double-layer annealing furnace comprises a waste heat utilization device and an annealing furnace body; the waste heat utilization device is located on one side of the double-layer annealing furnace. When in use, a workpiece is placed in a material frame 6, transported into the annealing furnace body by a first drive roller 2 and heated for heat treatment, and then transported outward by a second drive roller 3. The waste heat is used in a heat exchange chamber 1 to preheat the workpiece on the first drive roller 2, thereby realizing waste heat utilization and reducing energy consumption.

[0023] The above are only preferred embodiments of the present invention. The protection scope of the present invention shall be based on the scope defined by the claims. Several improvements and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall also be regarded as the protection scope of the present invention.

Claims

1. A waste heat utilization device for a double-layer annealing furnace, characterized in that: The invention comprises a heat exchange chamber (1), a first driving roller (2) located above the interior of the heat exchange chamber (1), and a second driving roller (3) located below the interior of the heat exchange chamber (1); a circulating fan (4) is provided on the heat exchange chamber (1); one end of the circulating fan (4) is connected to the top of the heat exchange chamber (1) and the other end is connected to the bottom of the heat exchange chamber (1) through a heat exchange pipe (5) to form a heat exchange channel.

2. The waste heat utilization device of a double-layer annealing furnace according to claim 1, characterized in that: The heat exchange tube (5) is located outside the heat exchange chamber (1).

3. The waste heat utilization device of a double-layer annealing furnace according to claim 1, characterized in that: The first driving roller (2) is a feed roller, one side of which is provided with a feed port; the second driving roller (3) is a discharge roller, one side of which is provided with a discharge port.

4. The waste heat utilization device of a double-layer annealing furnace according to claim 1, characterized in that: The first driving roller (2) and the second driving roller (3) are provided with a material frame (6) for placing workpieces.

5. The waste heat utilization device of a double-layer annealing furnace according to claim 1, characterized in that: The inner wall of the heat exchange chamber (1) is provided with a heat insulation layer.

6. A double-layer annealing furnace, characterized in that: It comprises the waste heat utilization device as described in any one of claims 1-5.

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