Air force adjusting device in annealing furnace

Abstract

The utility model relates to aluminium roll heat treatment technical field, especially relates to a wind power adjusting device in annealing furnace, and wind power adjusting device sets up at the one side position department of the ventilating pipe, and wind power adjusting device includes guide rail and a plurality of sliding blocks, and the guide rail sets up at the one side position department of the ventilating pipe, and the middle part of guide rail is provided with the slot, and the sliding block can be put into and guide rail connection from the slot position department, and the sliding block is slidably connected on the guide rail, and one end of the ventilating pipe is provided with a plurality of exhaust ports, and the sliding block can be slid to the one end of exhaust port and cover it up, in the utility model, the blocking area of each exhaust port is adjusted through the sliding block sliding, reduces the air inlet end exhaust port opening, increases the terminal exhaust port opening, balances the ventilating pipe each position air volume, significantly alleviates 'terminal effect', improves the furnace temperature uniformity, reduces the scrap rate of aluminium roll due to uneven heating.

Description

Technical Field

[0001] This utility model relates to the field of aluminum coil heat treatment technology, and in particular to an air force regulating device in an annealing furnace. Background Technology

[0002] The heat treatment quality of aluminum foil in a bogie-type annealing furnace is highly dependent on the uniformity of the temperature field within the furnace. Uneven furnace temperature can lead to problems such as substandard mechanical properties and inconsistent grain size, resulting in product rejection or even scrap, severely restricting production efficiency and product quality.

[0003] To achieve uniform heating, modern annealing furnaces generally employ forced convection circulation technology. The system typically includes: a vent pipe installed at the bottom of the furnace as the air supply terminal, with several air outlets on its wall; and a return air inlet installed at the top of the furnace to draw hot air back into the circulation system.

[0004] The function of the venting duct is to evenly blow hot air onto the workpieces inside the furnace. However, due to frictional resistance along the flow path in a long duct, the static pressure distribution inside the duct is uneven from the air inlet to the closed end, resulting in a "terminal effect." That is, the air volume and velocity are high near the air inlet, while the air volume and velocity are low at the air outlet further away from the air inlet. This uneven air delivery directly leads to different heating intensities in corresponding areas inside the furnace, resulting in poor temperature uniformity in the furnace width direction. This can be solved by extending the heating time, but the air temperature near the furnace door is lower than the temperature at the rear end of the furnace. The aluminum coils near the furnace door will exhibit a stronger "terminal effect," and simply extending the heating time cannot solve this problem. Utility Model Content

[0005] In view of the technical problems existing in the background art, the utility model provides an air force regulating device in the annealing furnace, which stabilizes the heating intensity in the furnace and increases the air outlet stability of the vent pipe at the furnace door.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows: An annealing furnace airflow regulating device is provided. At least two air vents are provided near the furnace door inside the annealing furnace. The airflow regulating device is located on one side of the air vents. The airflow regulating device includes a guide rail and several sliders. The guide rail is located on one side of the air vents. A slot is provided in the middle of the guide rail. The sliders can be inserted into the slots and connected to the guide rail. The sliders are slidably connected to the guide rail. Several exhaust ports are provided at one end of the air vents. The sliders can slide to one end of the exhaust ports and block them.

[0007] Preferably, the wind power regulating device also includes a baffle plate, which is disposed in the middle of the ventilator and inserted into the ventilator.

[0008] Preferably, the guide rail has a T-shaped structure, and a locking plate is fixedly connected to one side of the guide rail.

[0009] Preferably, one end of the slider is provided with a groove, the groove having the same shape as the guide rail, and the slider is engaged with the guide rail through the groove.

[0010] Preferably, a baffle is provided at one end of the slider. When the slider is connected to the guide rail, the baffle and the vent pipe are arranged in parallel and attached to the outside of the vent pipe.

[0011] Preferably, a limiting plate is provided at one end of the slider, and when the slider is connected to the guide rail, the limiting plate and the locking plate are arranged in parallel.

[0012] Preferably, the locking plate is provided with a plurality of threaded holes I, and the threaded holes I and the vent are located on the same straight line.

[0013] Preferably, the limiting plate is provided with a threaded hole II, which is aligned with the threaded hole I.

[0014] This utility model has the following advantages and beneficial effects: In this utility model: 1. Balance air volume distribution and alleviate terminal effect: By adjusting the shielding area of ​​each exhaust port by sliding the slider, the opening of the exhaust port at the air inlet end is reduced and the opening of the exhaust port at the end is increased. This balances the air volume at each position of the ventilator, significantly alleviates the "terminal effect", improves the temperature uniformity in the furnace, and reduces the scrapping of aluminum coils caused by uneven heating.

[0015] 2. Precise control to adapt to complex working conditions: Each exhaust port has an independent slider, which can be adjusted individually according to the temperature distribution inside the furnace; the multi-position fixed design of the threaded hole can meet the air force requirements of different aluminum coil specifications and different heat treatment stages, with high control precision.

[0016] 3. Stable structure and convenient operation: The T-shaped guide rail and the slide groove work together to ensure that the slider slides smoothly and does not fall off; the locking plate and the limit plate are quickly fixed and adjusted by bolts. Installation and adjustment do not require complicated tools, and workers can quickly get started. Attached Figure Description

[0017] Figure 1 This is a structural diagram of an airflow regulating device inside an annealing furnace proposed in this utility model; Figure 2 for Figure 1 Enlarged view of a portion at point C; Figure 3 This is a schematic diagram showing the installation position of an airflow regulating device inside an annealing furnace according to the present invention.

[0018] Reference numerals: 1-guide rail, 11-slot, 12-locking plate, 121-threaded hole I, 2-slider, 21-slide groove, 22-baffle, 23-limiting plate, 231-threaded hole II, 3-ventilation pipe, 31-exhaust port, 4-partition, 5-bolt, 6-annealing furnace, 61-furnace door, A-first ventilation pipe, B-second ventilation pipe. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] Example like Figures 1-3 As shown, an airflow regulating device inside an annealing furnace is mainly used to regulate the exhaust volume of the air vent 3 near the furnace door 61 inside the annealing furnace 6, balance the airflow distribution, and improve the temperature uniformity of aluminum coil heat treatment.

[0022] like Figures 1-3 As shown, an airflow regulating device for an annealing furnace includes a guide rail 1, several sliders 2, and a baffle 4. It works in conjunction with an air duct 3 to regulate airflow. The air duct 3 is made of a high-temperature resistant alloy to ensure it does not deform under the high-temperature environment of the annealing furnace 6. Several exhaust ports 31 are provided on its two outer walls. The spacing between adjacent exhaust ports 31 is designed according to the furnace airflow model to ensure uniform initial airflow coverage. The exhaust ports 31 are used to discharge high-temperature gas to the aluminum coil position above. At least two air ducts 3 are provided near the furnace door 61. A baffle 4 is provided on these two air ducts 3. The baffle 4 is a metal plate and is installed in the middle of the air duct 3 by cutting and welding. The baffle 4 divides the air duct 3 into two air channels, shortening the distance from the air inlet to the outlet, reducing the length of the airflow, and minimizing mutual interference between airflows. This results in stable airflow volume and velocity, ensuring heating efficiency.

[0023] like Figures 1-3As shown, the guide rail 1 is a T-shaped long strip metal piece, which is fixedly connected to the inside of the annealing furnace 6 by welding or bolting. The guide rail 1 is arranged parallel to the side wall of the vent pipe 3 where the exhaust port 31 is located. A slot 11 is opened in the middle of the guide rail 1 along the length direction, which divides the guide rail 1 into left and right sections. A locking plate 12 is provided on one side of the guide rail 1 by welding or integral casting. The locking plate 12 is attached to the inside of the annealing furnace 6. The locking plate 12 can also be connected to the annealing furnace 6 by welding or bolting. The length of the locking plate 12 is the same as the length of the vent pipe 3. The locking plate 12 and the vent pipe 3 are also arranged parallel to each other. Several threaded holes I121 are provided on the locking plate 12. The threaded holes I121 and the exhaust port 31 are located on the same straight line, with one exhaust port 31 corresponding to one threaded hole I121.

[0024] like Figures 1-3 As shown, the lower end of the slider 2 is provided with a T-shaped groove 21, which matches the T-shaped structure of the guide rail 1. The slider 2 can be slidably engaged on the guide rail 1. The width of the transverse flange of the T-shaped structure is slightly larger than the opening of the groove 21, which ensures that the slider 2 can slide smoothly along the guide rail and prevents the slider 2 from falling off due to thermal expansion and contraction at high temperature. A baffle 22 (rectangular plate) is vertically welded to the side of the slider 2 facing the vent pipe 3. The size of the baffle 22 is slightly larger than the exhaust port 31. When the slider 2 is connected to the guide rail 1, the baffle 22 and the vent pipe 3 are arranged parallel and attached to the outside of the vent pipe 3. It can slide with the slider 2 to block the exhaust port 31. The width of the slot 11 is larger than the width of the slider 2. The slider 2 is inserted into the slot 11 and connected to the guide rail 1. At the same time, the slider 2 can also be removed from the slot 11.

[0025] like Figures 1-3 As shown, a limiting plate 23 is vertically welded to the end of the slider 2 away from the baffle 22. When the slider 2 is connected to the guide rail 1, the limiting plate 23 and the locking plate 12 are set in parallel. The limiting plate 23 has a threaded hole II 231 (matching the threaded hole I 121). When the slider 2 slides to the target position (the baffle 22 blocks the exhaust port), the threaded hole II 231 is aligned with the corresponding threaded hole I 121 and fixed by bolts 5. The limiting plate 23 and the baffle 22 are vertically welded to form a stable "L" shaped structure, which can not only enhance the overall rigidity of the slider, but also ensure the parallelism between the baffle 22 and the exhaust port 31 through the contact surface with the locking plate 12, avoiding the air volume adjustment error caused by tilting.

[0026] like Figures 1-3As shown, the venting pipe 3 includes a first venting pipe A and a second venting pipe B. The first venting pipe A is located closest to the furnace door 61. The position of the slider 2 at the front end of the first venting pipe A is adjusted so that the slider 2 blocks the exhaust ports 31 on both sides of the first venting pipe A. When the first venting pipe A emits air, the air blows out from the middle of the first venting pipe A, increasing the air volume and temperature. The position of the slider 2 at the front end of the second venting pipe B is adjusted so that the exhaust ports 31 are arranged in pairs. Each pair of exhaust ports 31 is blocked by the slider 2. Compared with the prior art, the number of exhaust ports 31 is reduced, and the air volume and temperature are increased. However, since the second venting pipe B is not close to the furnace door 61, the air temperature in the middle of the second venting pipe B is slightly lower than the air temperature in the first venting pipe A.

[0027] The device of this utility model can adjust the air volume inside the annealing furnace 6 without changing the existing structure of the annealing furnace 6. The guide rail 1 and the locking plate 12 are installed inside the annealing furnace 6 by welding or bolting, which is convenient for disassembly and assembly. At the same time, the guide rail 1 and the locking plate 12 will not affect the normal air outlet of the vent pipe 3. The slider 2 is prefabricated on the outside and connected to the guide rail 1 by plugging. Different numbers of sliders 2 can be installed according to the different sizes of the heated aluminum coil, so that the whole device can adapt to various processing conditions.

[0028] Working principle: The guide rail 1 is fixed parallel to the side of the vent pipe 3 with the exhaust port 31, ensuring that the locking plate 12 is parallel to the vent pipe 3. The slider 2 is inserted into the slot 11 of the guide rail 1, so that the slide groove 21 engages with the guide rail 1. The baffle 22 fits against the outer wall of the vent pipe 3. Multiple sliders 2 are set at the first vent pipe position near the furnace door 61, so that the baffle 22 on the slider 2 blocks the exhaust ports 31 on both sides of the vent pipe 3, leaving only the exhaust port 31 in the middle of the vent pipe open. The slider 2 and the locking plate 12 are then connected by... Bolt connection 5, multiple sliders 2 are set at the position of another vent pipe 3, so that the baffles 22 on the sliders 2 block the exhaust ports 31 on the vent pipe 3 in pairs evenly. When the annealing furnace 6 is working, the vent pipe 3 near the furnace door 61 will only exhaust air from the middle due to the blockage of the sliders 2, while the other vent pipe 3 will exhaust air from multiple sets of exhaust ports 31 due to the blockage of the sliders 2. Adjusting the exhaust position of the vent pipe 3 increases the air volume and at the same time increases the temperature at the furnace door 61, thereby improving the temperature uniformity inside the furnace.

[0029] This utility model adjusts the opening of the exhaust port by sliding a slider, accurately balances the air volume at each position of the vent pipe, effectively alleviates the "terminal effect", improves the temperature uniformity inside the furnace, has a stable structure and is easy to operate. It is suitable for air force control of various aluminum coil annealing furnaces, significantly improves heat treatment quality and reduces product scrap rate.

[0030] The above content is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wind force regulating device for an annealing furnace, wherein at least two air vents are provided inside the annealing furnace near the furnace door, characterized in that: The wind power adjustment device is located on one side of the ventilation duct. The wind power adjustment device includes a guide rail and several sliders. The guide rail is located on one side of the ventilation duct. A slot is provided in the middle of the guide rail. The sliders can be inserted into the slot and connected to the guide rail. The sliders are slidably connected to the guide rail. Several exhaust ports are provided at one end of the ventilation duct. The sliders can slide to one end of the exhaust ports and block them.

2. The airflow regulating device inside an annealing furnace according to claim 1, characterized in that: The wind power regulating device also includes a partition, which is disposed in the middle of the ventilator and inserted into the ventilator.

3. The airflow regulating device inside an annealing furnace according to claim 1, characterized in that: The guide rail has a T-shaped structure, and a locking plate is fixedly connected to one side of the guide rail.

4. The airflow regulating device inside an annealing furnace according to claim 3, characterized in that: One end of the slider is provided with a groove, the groove and the guide rail have the same shape, and the slider is engaged with the guide rail through the groove.

5. The airflow regulating device inside an annealing furnace according to claim 4, characterized in that: One end of the slider is provided with a baffle for blocking the exhaust port. When the slider is connected to the guide rail, the baffle and the exhaust pipe are arranged in parallel and attached to the outside of the exhaust pipe.

6. The airflow regulating device inside an annealing furnace according to claim 5, characterized in that: A limiting plate is provided at one end of the slider. When the slider is connected to the guide rail, the limiting plate and the locking plate are arranged in parallel.

7. The airflow regulating device inside an annealing furnace according to claim 6, characterized in that: The locking plate is provided with a plurality of threaded holes I, and the threaded holes I and the exhaust port are located on the same straight line.

8. The airflow regulating device inside an annealing furnace according to claim 7, characterized in that: The limiting plate is provided with threaded hole II, which is aligned with threaded hole I. Bolts are inserted into threaded hole II and threaded hole I to fix the limiting plate and the locking plate.

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