Expansion furnace of annealing furnace

Abstract

The utility model discloses a volume expansion furnace of an annealing furnace, a volume expansion furnace gate matched with a furnace gate of the annealing furnace is arranged on the rear side facing the annealing furnace, the volume expansion furnace can move backwards to be butted with the annealing furnace, and the bottom of a furnace chamber of the volume expansion furnace is provided with an additional furnace bottom plate trolley capable of being pulled away from the volume expansion furnace backwards. The left side and the right side of the expansion furnace are each provided with a first walking wheel, and the first walking wheels walk on a forward extending section of a first ground rail where a furnace bottom plate trolley at the bottom of the annealing furnace walks. Wheel carriers are arranged on the two sides of the bottom of the expansion furnace respectively, and first walking wheels arranged on the left side and the right side of the expansion furnace respectively are installed on the wheel carriers on the two sides respectively, so that a passage allowing the furnace bottom plate trolley to enter and exit from the expansion furnace is formed between the wheel carriers on the two sides. The annealing furnace has the advantages that various lengthened workpieces within a certain range can be annealed by only needing an annealing furnace with a smaller length specification and additionally arranging an expansion furnace, so that not only can electric energy be saved, but also the acquisition cost can be saved; the operation is simple.

Description

Technical Field

[0001] The utility model relates to a capacity expansion furnace of an annealing furnace, belonging to the technical field of high-temperature furnaces. Background Art

[0002] Annealing furnaces are used to heat and anneal workpieces. Their basic structure consists of a furnace body with a door, an internal furnace chamber, and refractory bricks around the walls and bottom of the chamber, along with built-in electric heating wires. The door of a large annealing furnace is a gate that can be raised and lowered. At the bottom is a floor trolley with running wheels that can be separated from the furnace body. When loading annealing parts, they are pushed outward from the furnace door along fixed bottom tracks. The parts to be annealed are then placed on the floor trolley by a crane and then pushed back into the annealing furnace.

[0003] The size of existing annealing furnaces is fixed, and its disadvantage is that large annealing furnaces are expensive. Generally, large workpieces processed by processing enterprises have different lengths. If the enterprise purchases according to the largest specifications, a large amount of electricity will be wasted when processing shorter workpieces. If it is purchased according to the shortest workpiece, it will not be able to process longer workpieces. If it is purchased according to all specifications, the purchase cost will increase several times and a large area of ​​​​site will be occupied. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to use an annealing furnace with shorter specifications to carry out heating annealing on an elongated large workpiece under the premise of saving electricity cost.

[0005] In view of the above problems, the technical solution proposed by the present invention is:

[0006] An expansion furnace for an annealing furnace is provided with an expansion furnace door that matches the furnace door of the annealing furnace on the rear side of the annealing furnace. The expansion furnace can be moved backward to dock with the annealing furnace. The bottom of the furnace cavity of the expansion furnace is a furnace bottom plate vehicle that can be dragged backward away from the expansion furnace.

[0007] A running wheel 1 is provided on the left and right sides of the expansion furnace respectively, and the running wheel 1 runs on a forward extension section of a ground track 1 on which a furnace bottom plate car at the bottom of the annealing furnace runs.

[0008] Wheel frames are provided on both sides of the bottom of the expansion furnace, and the running wheels provided on the left and right sides of the expansion furnace are respectively installed on the wheel frames on both sides, so that an aisle is formed between the wheel frames on both sides for the furnace bottom plate car to enter and exit the expansion furnace.

[0009] The left and right sides of the furnace floor vehicle are respectively provided with two running wheels, and between the two side monorails of the ground track one, a second ground track is provided for the running of the two running wheels of the furnace floor vehicle.

[0010] A connecting mechanism is provided between the rear end of the furnace floor plate trolley and the front end of the furnace floor plate trolley.

[0011] An iron magnetic body is arranged at the rear end of the furnace floor car, a strong electromagnet is arranged at the front end of the furnace floor car to form a magnetic attraction force on the magnetic body, and an electromagnet is arranged in the strong electromagnet.

[0012] An iron magnetic body 2 is provided at the top center of the rear end of the expansion furnace, and a strong electromagnet 2 for generating magnetic attraction to the magnetic body 2 is provided at the top center of the front end of the annealing furnace. An electromagnet is provided inside the strong electromagnet 2.

[0013] A screw extending backward is provided at the front end of the furnace floor trolley, and a hole for the screw to extend forward is provided at the lower part of the front wall of the expansion furnace. When the furnace floor trolley is located in the expansion furnace, the screw extends forward from the hole provided at the lower part of the front wall and is then locked by a nut, thereby longitudinally fixing the furnace floor trolley and the expansion furnace. Beneficial effects

[0014] 1. Only one annealing furnace with a smaller length specification is needed, and an expansion furnace is added to anneal various lengthened workpieces within a certain range, which can save both electricity and purchase costs;

[0015] 2. Simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional schematic diagram of the expansion furnace;

[0017] Figure 2 It is a three-dimensional schematic diagram of the furnace floor car of the annealing furnace dragging the additional furnace floor car of the expansion furnace out of the expansion furnace;

[0018] Figure 3 for Figure 2 A partial schematic diagram of

[0019] Figure 4 This is a three-dimensional schematic diagram of the docking of the annealing furnace and the expansion furnace.

[0020] In the figure: 1. Annealing furnace; 100. Furnace door; 101. Furnace floor trolley; 102. Gate; 103. Strong electromagnet 2; 2. Expansion furnace; 200. Expansion furnace door; 201. Wheel frame; 2011. Traveling wheel 1; 2012. Ground track 1; 202. Additional furnace floor trolley; 2021. Traveling wheel 2; 2022. Ground track 2; 2023. Magnetic body 1; 203. Magnetic body 2; 204. Aisle; 205. Screw; 3. Circuit docking coupler; 301. Power supply socket; 302. Power receiving socket. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the embodiments and accompanying drawings:

[0022] like Figure 1As shown in FIG. 4 , an expansion furnace for an annealing furnace is provided with an expansion furnace door 200 on the rear side of the annealing furnace 1 that matches the furnace door 100 of the annealing furnace 1. The expansion furnace 2 can move backward to dock with the annealing furnace 1, so that the furnace cavity of the expansion furnace 2 is connected to the furnace cavity of the annealing furnace 1, lengthening the furnace cavity of the annealing furnace, thereby meeting the furnace cavity space length requirements of the lengthened workpiece. The bottom of the furnace cavity of the expansion furnace 2 is equipped with a furnace floor trolley 202 that can be dragged backward away from the expansion furnace 2, so that it can dock with the furnace floor trolley 101 that has been driven forward from the bottom of the annealing furnace 1. The docked additional furnace floor trolley 202 and furnace floor trolley 101 place the elongated workpiece in the open area between the annealing furnace 1 and the expansion furnace 2, and the front and rear of the elongated workpiece can be placed on the additional furnace floor trolley 202 and furnace floor trolley 101 respectively, and the additional furnace floor trolley 202 and furnace floor trolley 101 provide support for the elongated workpiece and jointly bear the weight of the elongated workpiece. Then the additional furnace floor trolley 202 is pulled by the furnace floor trolley 101 toward the annealing furnace 1, and the furnace floor trolley 101 enters the furnace cavity of the annealing furnace 1. The additional furnace floor trolley 202 stays outside the furnace door 100 of the annealing furnace 1. With the expansion furnace 2 moving backward and docking with the annealing furnace 1, the additional furnace floor trolley 202 returns to the expansion furnace 2.

[0023] During the use of the expansion furnace 2, the gate 102 of the annealing furnace 1 is raised and is in a suspended state.

[0024] Traveling wheels 2011 are provided on the left and right sides of the expansion furnace 2. These travel wheels 2011 run on a forward extension of a ground track 2012 on which a furnace floor trolley 101 at the bottom of the annealing furnace 1 travels. Wheel frames 201 are provided on both sides of the bottom of the expansion furnace 2. These traveling wheels 2011 are mounted on the wheel frames 201 on either side, forming a passage 204 between the wheel frames 201 for the furnace floor trolley 202 to enter and exit the expansion furnace 2.

[0025] The left and right sides of the furnace floor car 202 are respectively provided with running wheels 2021, and between the two side monorails of the ground track 1 2012, a ground track 2022 is provided for the running wheels 2021 of the furnace floor car 202 to run.

[0026] A connecting mechanism is provided between the rear end of the furnace floor plate trolley 202 and the front end of the furnace floor plate trolley 101 .

[0027] Preferably, the coupling mechanism is an electromagnetic mechanism. Specifically, an iron magnetic body 2023 is installed at the rear end of the furnace floor trolley 202, and a strong electromagnet (not shown) is installed at the front end of the furnace floor trolley 101 to generate a magnetic attraction for the magnetic body 2023. An electromagnet is located within the strong electromagnet. This mechanism allows for reliable coupling and disconnection between the adjacent furnace floor trolley 202 and the furnace floor trolley 101 by controlling the on / off current, eliminating manual operation and providing excellent convenience.

[0028] The connecting mechanism can also be configured as a snap-fit ​​mechanism or a bolt fastening mechanism.

[0029] A screw rod 205 extending backward is provided at the front end of the furnace bottom plate trolley 202, and a hole for the screw rod 205 to extend forward is provided at the lower part of the front wall of the expansion furnace 2. When the furnace bottom plate trolley 202 is located in the expansion furnace 2, the screw rod 205 extends forward from the hole provided at the lower part of the front wall and is then locked by a nut, so as to longitudinally fix the furnace bottom plate trolley 101 and the expansion furnace 2.

[0030] An iron magnetic body 203 is provided at the top center of the rear end of the expansion furnace 2, and a strong electromagnet 2 103 is provided at the top center of the front end of the annealing furnace 1 to form a magnetic attraction force on the magnetic body 203. An electromagnet is provided inside the strong electromagnet 2 103. In this way, the upper strong electromagnet 2 103 and the magnetic body 2 203 are fastened by magnetic attraction, and the lower strong electromagnet 1 and the magnetic body 1 2023 are fastened by magnetic attraction, so that the adjacent annealing furnace 1 and the expansion furnace 2 are tightly docked, and the operation is very convenient.

[0031] Likewise, the annealing furnace 1 and the capacity expansion furnace 2 can also be tightly connected by a snap-fit ​​mechanism or a bolt fastening mechanism.

[0032] A circuit docking couple 3 is provided between the annealing furnace 1 and the expansion furnace 2, which includes a power supply seat 301 provided on the annealing furnace 1 and a power receiving seat 302 provided on the expansion furnace 2. When the annealing furnace 1 and the expansion furnace 2 are docked, at least the heating circuit in the expansion furnace 2 can be connected to the heating circuit in the annealing furnace 1. In this way, there is no need to establish a furnace temperature monitoring system on the side of the expansion furnace 2.

[0033] The above embodiments are only used to more clearly describe the present invention and cannot be regarded as limiting the scope of protection covered by the present invention. Any modifications in equivalent forms should be regarded as falling within the scope of protection covered by the present invention.

Claims

1. An expansion furnace for an annealing furnace, characterized in that: On the rear side of the annealing furnace (1), an expansion furnace door (200) is provided that matches the furnace door (100) of the annealing furnace (1). The expansion furnace (2) can be moved backward to dock with the annealing furnace (1). The bottom of the furnace cavity of the expansion furnace (2) is a furnace bottom plate vehicle (202) that can be dragged backward away from the expansion furnace (2).

2. The expansion furnace of the annealing furnace according to claim 1, characterized in that: The expansion furnace (2) is provided with a running wheel (211) on the left and right sides respectively. The running wheel (211) runs on a forward extension section of a ground track (212) on which a furnace bottom plate car (101) at the bottom of the annealing furnace (1) runs.

3. The expansion furnace of the annealing furnace according to claim 2, characterized in that: Wheel frames (201) are provided on both sides of the bottom of the expansion furnace (2), and running wheels (211) provided on the left and right sides of the expansion furnace (2) are respectively installed on the wheel frames (201) on both sides, so that an aisle (204) is formed between the wheel frames (201) on both sides for a furnace bottom plate vehicle (202) to enter and exit the expansion furnace (2).

4. The expansion furnace of the annealing furnace according to claim 2, characterized in that: The furnace floor vehicle (202) is provided with two running wheels (221) on the left and right sides, respectively. Between the two side monorails of the ground track (212), a ground track (222) is provided for the running of the two running wheels (221) of the furnace floor vehicle (202).

5. The expansion furnace of the annealing furnace according to any one of claims 1 to 4, characterized in that: A connecting mechanism is provided between the rear end of the furnace floor plate trolley (202) and the front end of the furnace floor plate trolley (101).

6. The expansion furnace of the annealing furnace according to claim 5, characterized in that: An iron magnetic body (2023) is provided at the rear end of the furnace floor car (202), and a strong electromagnet (101) for generating magnetic attraction for the magnetic body (223) is provided at the front end. An electromagnet is provided inside the strong electromagnet.

7. The expansion furnace of the annealing furnace according to claim 5, characterized in that: An iron magnetic body 2 (203) is provided at the top center of the rear end of the expansion furnace (2), and a strong electromagnet 2 (103) for generating a magnetic attraction force on the magnetic body 2 (203) is provided at the top center of the front end of the annealing furnace (1), and an electromagnet is provided inside the strong electromagnet 2 (103).

8. The expansion furnace of the annealing furnace according to any one of claims 1 to 4, characterized in that: A screw rod (205) extending backward is provided at the front end of the furnace-hanging floor trolley (202), and a hole for the screw rod (205) to extend forward is provided at the lower portion of the front wall of the expansion furnace (2). When the furnace-hanging floor trolley (202) is located in the expansion furnace (2), the screw rod (205) extends forward from the hole provided at the lower portion of the front wall and is then locked by a nut, thereby longitudinally fixing the furnace-hanging floor trolley (101) and the expansion furnace (2).

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