Continuous annealing furnace for castings

Abstract

The application discloses a continuous casting annealing furnace, which comprises a furnace body, a furnace chamber, a furnace door, a flat car, a tray, refractory bricks and two first sealing mechanisms. The furnace chamber is arranged in the furnace body, and an adiabatic layer is filled between the furnace chamber and the furnace body, and the inner wall of the furnace chamber is provided with a heating mechanism. The furnace door is arranged on the furnace body and can be opened and closed. The flat car is movably arranged in the furnace body. The tray is arranged on the flat car. The refractory bricks are arranged on the bottom of the furnace chamber and located on both sides of the flat car. The two first sealing mechanisms are respectively fixed on both sides of the flat car and located above the refractory bricks. Therefore, the continuous casting annealing furnace has the advantages of simple and reasonable structure, convenient replacement and low cost, and can effectively avoid the damage of the flat car wheel during operation, and the problem that the damaged flat car sinks and scratches the refractory bricks on both sides, causing the damage of the refractory bricks in the whole furnace.

Description

Technical Field

[0001] This invention relates to the field of casting equipment technology, and in particular to a continuous annealing furnace for castings. Background Technology

[0002] Currently, the sealing of both sides of the flatcar in the continuous annealing furnace of foundry enterprises is done by stacking refractory bricks, but this has the following disadvantages:

[0003] 1. Because the temperature inside the continuous annealing furnace for castings is as high as 600 degrees Celsius, the mortar bonding the refractory bricks is not firmly fixed and is easy to loosen and fall off, scraping against the sides of the flatcar and causing the flatcar wheels to detach from the guide rail.

[0004] 2. The continuous annealing furnace for castings has more than 100 flatcars. It is inevitable that the flatcar wheels will be damaged during operation. After the damage, the flatcar will sink and scrape against the refractory bricks on both sides, causing damage to the refractory bricks of the entire furnace.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a continuous annealing furnace for castings, which has a simple and reasonable structure, is easy to replace, has low cost, and effectively avoids the problem of damage to the flat car wheels during operation, which causes the flat car to sink and scrape against the refractory bricks on both sides, resulting in damage to the refractory bricks of the entire furnace.

[0007] To achieve the above objectives, the present invention provides a continuous annealing furnace for castings, comprising: a furnace body, a furnace chamber, a furnace door, a flatcar, a tray, refractory bricks, and two first sealing mechanisms. The furnace chamber is disposed within the furnace body, and an insulation layer is filled between the furnace chamber and the furnace body; a heating mechanism is installed on the inner wall of the furnace chamber. The furnace door is movably mounted on the furnace body. The flatcar is movably disposed within the furnace body. The tray is disposed on the flatcar. Refractory bricks are laid on the bottom of the furnace chamber and located on both sides of the flatcar. The two first sealing mechanisms are respectively fixed to both sides of the flatcar and located above the refractory bricks.

[0008] In one embodiment of the invention, each sealing mechanism includes multiple bolts, aluminum silicate insulation cotton, and multiple nuts. The multiple bolts are welded to the side brackets of the flatcar. The aluminum silicate insulation cotton is laid on both sides of the flatcar. The multiple nuts are screwed onto the multiple bolts, thereby fixing the aluminum silicate insulation cotton to both sides of the flatcar.

[0009] In one embodiment of the present invention, a gasket is also provided between each nut and the aluminum silicate insulation cotton.

[0010] In one embodiment of the present invention, the continuous annealing furnace for castings further includes a second sealing mechanism disposed between the rear side wall of the furnace chamber and the tray, a third sealing mechanism disposed between the surrounding side wall of the furnace chamber and the tray, a fourth sealing mechanism disposed between the front side wall of the furnace chamber and the tray, and a fifth sealing mechanism disposed between the furnace door and the front side wall of the furnace chamber.

[0011] In one embodiment of the present invention, the second sealing mechanism is provided with a first sealing plate and a plurality of sealing actuators. The first sealing plate is disposed along the bottom end face of the rear side wall, and the plurality of sealing actuators are evenly disposed on the first sealing plate. The plurality of sealing actuators push the first sealing plate toward the tray and press it tightly, thereby achieving a seal.

[0012] In one embodiment of the present invention, the third sealing mechanism includes a second sealing plate and a pressing mechanism. The second sealing plate is disposed at the gap between the tray and the side wall. One end of the pressing mechanism is connected to the bottom end face of the side wall, and the other end of the pressing mechanism is connected to the second sealing plate. The pressing mechanism pushes the second sealing plate into the gap between the tray and the side wall to achieve sealing.

[0013] In one embodiment of the present invention, multiple pressing mechanisms are evenly arranged along the second sealing plate, and the second sealing plate is symmetrically distributed along the gap.

[0014] In one embodiment of the present invention, the fourth sealing mechanism includes a third sealing plate, an elastic component, and an elastic component support. One end of the elastic component support is connected to the bottom surface of the tray, the elastic component is disposed at the other end of the elastic component support, and the third sealing plate is disposed at the other end of the elastic component. The fourth sealing mechanism can move in and out of the furnace with the tray. One end of the third sealing plate is close to the tray, and the other end extends directly below the furnace door. After the furnace door is closed, the fourth sealing mechanism is compacted, achieving a seal between the furnace door, the front sidewall, and the tray.

[0015] In one embodiment of the present invention, the fifth sealing mechanism includes a sealing pressure rod, a straight-moving air cylinder, and a connecting member. The straight-moving air cylinder is connected to the side end face of the front side wall in the height direction through the connecting member. The sealing pressure rod is hinged to the connecting member. One end of the sealing pressure rod is connected to the execution end of the straight-moving air cylinder, and the other end is placed in front of the furnace door to press the furnace door against the front side wall. The fifth sealing mechanism is symmetrically arranged in multiple pairs on both sides along the height direction of the front side wall.

[0016] In one embodiment of the present invention, the furnace body has a furnace cover, an exhaust pipe is installed on the furnace cover, and an exhaust valve and a nitrogen concentration detector are installed on the exhaust pipe.

[0017] Compared with the prior art, the continuous annealing furnace for castings according to the present invention has a simple and reasonable structure, is easy to replace, has low cost, and effectively avoids the problem of damage to the flat wheels during operation, which causes the flat wheels to sink and scrape against the refractory bricks on both sides, resulting in damage to the refractory bricks of the entire furnace. Attached Figure Description

[0018] Figure 1 This is a front view structural schematic diagram of a continuous casting annealing furnace according to an embodiment of the present invention.

[0019] Explanation of key figure labels:

[0020] 1-Furnace body, 2-Furnace chamber, 3-Flatcar, 4-Pallet, 5-Refractory brick, 6-Alumina silicate insulation cotton, 7-Exhaust pipe. Detailed Implementation

[0021] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0022] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0023] Figure 1 This is a front view structural schematic diagram of a continuous casting annealing furnace according to an embodiment of the present invention. Figure 1 As shown, a continuous annealing furnace for castings according to a preferred embodiment of the present invention includes: a furnace body 1, a furnace chamber 2, a furnace door, a flatcar 3, a tray 4, refractory bricks 5, and two first sealing mechanisms. The furnace chamber 2 is disposed within the furnace body 1, and an insulation layer is filled between the furnace chamber 2 and the furnace body 1. A heating mechanism is installed on the inner wall of the furnace chamber 2. The furnace door is movably disposed on the furnace body 1. The flatcar 3 is movably disposed within the furnace body 1. The tray 4 is disposed on the flatcar 3. Refractory bricks 5 are laid on the bottom of the furnace chamber 2 and located on both sides of the flatcar 3. The two first sealing mechanisms are respectively fixed to both sides of the flatcar 3 and located above the refractory bricks 5.

[0024] In one embodiment of the present invention, each sealing mechanism includes multiple bolts, aluminum silicate insulation cotton 6, and multiple nuts. The multiple bolts are respectively welded to the side brackets of the flatcar 3. The aluminum silicate insulation cotton 6 is laid on both sides of the flatcar 3. The multiple nuts are respectively screwed onto the multiple bolts, thereby fixing the aluminum silicate insulation cotton 6 to both sides of the flatcar 3.

[0025] In one embodiment of the present invention, a gasket is also provided between each nut and the aluminum silicate insulation cotton 6.

[0026] In one embodiment of the present invention, the continuous annealing furnace for castings further includes a second sealing mechanism disposed between the rear side wall of the furnace chamber 2 and the tray 4, a third sealing mechanism disposed between the surrounding side wall of the furnace chamber 2 and the tray 4, a fourth sealing mechanism disposed between the front side wall of the furnace chamber 2 and the tray 4, and a fifth sealing mechanism disposed between the furnace door and the front side wall of the furnace chamber 2.

[0027] In one embodiment of the present invention, the second sealing mechanism is provided with a first sealing plate and a plurality of sealing actuators. The first sealing plate is disposed along the bottom end face of the rear side wall, and the plurality of sealing actuators are evenly disposed on the first sealing plate. The plurality of sealing actuators push the first sealing plate toward the tray 4 and press it tightly, thereby achieving a seal.

[0028] In one embodiment of the present invention, the third sealing mechanism is provided with a second sealing plate and a pressing mechanism. The second sealing plate is disposed at the gap between the tray 4 and the surrounding side wall. One end of the pressing mechanism is connected to the bottom end face of the surrounding side wall, and the other end of the pressing mechanism is connected to the second sealing plate. The pressing mechanism pushes the second sealing plate to the gap between the tray 4 and the surrounding side wall to achieve sealing.

[0029] In one embodiment of the present invention, multiple pressing mechanisms are evenly arranged along the second sealing plate, and the second sealing plate is symmetrically distributed along the gap.

[0030] In one embodiment of the present invention, the fourth sealing mechanism includes a third sealing plate, an elastic component, and an elastic component support. One end of the elastic component support is connected to the bottom surface of the tray 4, the elastic component is disposed at the other end of the elastic component support, and the third sealing plate is disposed at the other end of the elastic component. The fourth sealing mechanism can move in and out of the furnace chamber 2 with the tray 4. One end of the third sealing plate is close to the tray 4, and the other end extends directly below the furnace door. After the furnace door is closed, the fourth sealing mechanism is compacted, achieving a seal between the furnace door, the front side wall, and the tray 4.

[0031] In one embodiment of the present invention, the fifth sealing mechanism includes a sealing pressure rod, a straight-moving air cylinder, and a connecting member. The straight-moving air cylinder is connected to the side end face of the front side wall in the height direction through the connecting member. The sealing pressure rod is hinged to the connecting member. One end of the sealing pressure rod is connected to the execution end of the straight-moving air cylinder, and the other end is placed in front of the furnace door to press the furnace door against the front side wall. The fifth sealing mechanism is symmetrically arranged in multiple pairs on both sides along the height direction of the front side wall.

[0032] In one embodiment of the present invention, the furnace body 1 has a furnace cover, an exhaust pipe 7 is installed on the furnace cover, and an exhaust valve and a nitrogen concentration detector are installed on the exhaust pipe 7.

[0033] In practical applications, the continuous annealing furnace for castings of this invention addresses the current defect in continuous annealing furnaces for castings where the sealing refractory bricks 5 on both sides of the flatcar 3 are not securely fixed and easily loosen and fall off. Alumina silicate insulation cotton 6 is cross-stacked on both sides of the flatcar 3, and welded bolts are attached to the brackets on both sides of the flatcar 3. After drilling holes in the alumina silicate insulation cotton 6, it is installed aligned with the bolts. After installation, the alumina silicate insulation cotton 6 is tightened with washers and nuts. The alumina silicate insulation cotton 6 has excellent thermal insulation performance, low thermal conductivity, strong resilience at high temperatures, low shrinkage, and is easy to install. When the flatcar 3 is scraped or bumped, only the surface insulation surface is damaged, making replacement convenient and cost-effective.

[0034] In summary, the continuous annealing furnace for castings of the present invention has a simple and reasonable structure, is easy to replace, and has low cost. It also effectively avoids the problem that the flatcar 3 wheels are damaged during operation, and that the flatcar 3 sinks down and scrapes against the refractory bricks 5 on both sides after damage, causing damage to the entire furnace refractory bricks 5. Furthermore, the aluminum silicate insulation cotton has excellent heat insulation performance, low thermal conductivity, strong resilience at high temperatures, and small shrinkage.

[0035] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A continuous annealing furnace for castings, characterized in that, include: Furnace body; A furnace chamber is disposed within the furnace body, and an insulation layer is filled between the furnace chamber and the furnace body, and a heating mechanism is installed on the inner wall of the furnace chamber. A furnace door, capable of being opened and closed, is provided on the furnace body; A flatcar is movably mounted within the furnace body; A pallet is placed on the flatcar; Refractory bricks are laid on the bottom of the furnace and located on both sides of the flatcar; as well as Two first sealing mechanisms are fixed to both sides of the flatcar and located above the refractory bricks; Each of the sealing mechanisms includes: Multiple bolts are welded to the side brackets of the flatcar. Aluminum silicate insulation cotton is laid on both sides of the flatbed; and Multiple nuts are screwed onto the multiple bolts to fix the aluminum silicate insulation cotton to both sides of the flatcar.

2. The continuous annealing furnace for castings as described in claim 1, characterized in that, A gasket is also provided between each nut and the aluminum silicate insulation cotton.

3. The continuous annealing furnace for castings as described in claim 1, characterized in that, It also includes a second sealing mechanism disposed between the rear side wall of the furnace and the tray, a third sealing mechanism disposed between the surrounding side wall of the furnace and the tray, a fourth sealing mechanism disposed between the front side wall of the furnace and the tray, and a fifth sealing mechanism disposed between the furnace door and the front side wall of the furnace.

4. The continuous annealing furnace for castings as described in claim 3, characterized in that, The second sealing mechanism is provided with a first sealing plate and a plurality of sealing actuators. The first sealing plate is disposed along the bottom end face of the rear side wall. The plurality of sealing actuators are evenly disposed on the first sealing plate. The plurality of sealing actuators push the first sealing plate toward the tray and press it tightly, thereby achieving a seal.

5. The continuous annealing furnace for castings as described in claim 3, characterized in that, The third sealing mechanism includes a second sealing plate and a pressing mechanism. The second sealing plate is disposed in the gap between the tray and the side wall. One end of the pressing mechanism is connected to the bottom end face of the side wall, and the other end of the pressing mechanism is connected to the second sealing plate. The pressing mechanism pushes the second sealing plate into the gap between the tray and the side wall to achieve sealing.

6. The continuous annealing furnace for castings as described in claim 5, characterized in that, Multiple clamping mechanisms are evenly arranged along the second sealing plate, and the second sealing plate is symmetrically distributed along the gap.

7. The continuous annealing furnace for castings as described in claim 3, characterized in that, The fourth sealing mechanism includes a third sealing plate, an elastic component, and an elastic component support. One end of the elastic component support is connected to the bottom surface of the tray, the elastic component is disposed at the other end of the elastic component support, the third sealing plate is disposed at the other end of the elastic component, and the fourth sealing mechanism can enter and exit the furnace along with the tray. One end of the third sealing plate is close to the tray, and the other end of the third sealing plate extends directly below the furnace door. After the furnace door is closed, the fourth sealing mechanism is compacted to achieve a seal between the furnace door, the front side wall, and the tray.

8. The continuous annealing furnace for castings as described in claim 3, characterized in that, The fifth sealing mechanism includes a sealing pressure rod, a straight-moving air cylinder, and a connecting piece. The straight-moving air cylinder is connected to the side end face of the front side wall in the height direction via the connecting piece. The sealing pressure rod is hinged to the connecting piece. One end of the sealing pressure rod is connected to the execution end of the straight-moving air cylinder, and the other end is placed in front of the furnace door to press the furnace door against the front side wall. Multiple pairs of the fifth sealing mechanism are symmetrically arranged on both sides of the front side wall in the height direction.

9. The continuous annealing furnace for castings as described in claim 1, characterized in that, The furnace body has a furnace cover, an exhaust pipe is installed on the furnace cover, and an exhaust valve and a nitrogen concentration detector are installed on the exhaust pipe.

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