Furnace cooling device

Abstract

The application discloses a furnace cooling device, which comprises a wind guide, a first joint, a second joint and a filter. The wind guide is internally provided with an air duct which is penetrated from the first end to the second end. The first joint is fixedly connected with the first end of the wind guide. The cross section of the first joint is square. The first joint is used for connecting with a manhole of an annealing furnace. The second joint is fixedly connected with the second end of the wind guide. The cross section of the second joint is circular. The second joint is used for connecting with an air outlet of an axial flow fan. The filter is detachably installed in the air duct. The axial flow fan and the annealing furnace are connected through the first joint and the second joint. The air output by the axial flow fan is introduced into the annealing furnace through the air duct. The cooling air can be efficiently introduced into the furnace, so that the cooling time is greatly shortened. Meanwhile, the filter is detachably installed in the air duct, which can effectively filter the impurities in the cooling air, prevent the impurities from entering the furnace, protect the internal equipment of the furnace and prolong the service life of the equipment.

Description

Technical Field

[0001] This application belongs to the field of metallurgical technology, and in particular relates to a furnace cooling device. Background Technology

[0002] The annealing furnace of the cold rolling continuous annealing unit is a confined space of furnace and kiln. When the unit is shut down for maintenance, it is necessary to enter the annealing furnace to inspect and replace the carbon rollers and refractory materials inside the furnace. Because the temperature inside the annealing furnace is high, it is necessary to cool down the annealing furnace during the shutdown maintenance. Only after the cooling temperature requirement is met can the operators enter the confined space to carry out the work.

[0003] Currently, the annealing furnace is cooled by opening the maintenance manhole and then allowing natural ventilation. However, the highest temperature in the annealing furnace can reach over 1000℃. It takes three days for the unit to cool down from the time it enters the furnace for maintenance until it meets the conditions for entering the furnace. This seriously delays the maintenance period and production recovery time, leading to increased maintenance costs and reduced production output. At the same time, maintenance work inside the annealing furnace poses a safety risk of high-temperature burns and heatstroke to the workers due to the high temperature and lack of effective ventilation and cooling measures. Utility Model Content

[0004] This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes a furnace cooling device that greatly shortens the cooling time of the annealing furnace, protects the internal equipment of the furnace, and extends its service life.

[0005] This application provides a furnace cooling device, comprising:

[0006] An air guide component, wherein an air duct extends from its first end to its second end;

[0007] The first connector is fixedly connected to the first end of the air guide. The cross-section of the first connector is square. The first connector is used to connect to the manhole of the annealing furnace.

[0008] The second connector is fixedly connected to the second end of the air guide. The cross-section of the second connector is circular. The second connector is used to connect to the air outlet of the axial flow fan.

[0009] The filter element is detachable and can be installed inside the air duct.

[0010] According to the furnace cooling device of this application, it is connected between an axial flow fan and an annealing furnace via a first connector and a second connector. By setting up an air duct, the air output from the axial flow fan is introduced into the annealing furnace, which can efficiently guide cooling air into the furnace, significantly shortening the cooling time. Simultaneously, the filter element is detachably installed in the air duct, effectively filtering impurities in the cooling air, preventing them from entering the furnace, protecting the internal equipment, and extending the service life of the equipment.

[0011] According to one embodiment of this application, the inner wall of the air duct is provided with a plurality of connecting seats evenly distributed along its circumference, and the filter element includes a fixed frame and a filter screen, the filter screen is disposed in the central area of ​​the fixed frame, and the fixed frame is detachably connected to the plurality of connecting seats.

[0012] According to one embodiment of this application, the connector is provided with a connecting groove, and the fixing frame is provided with a positioning block on the side facing the connector, and the positioning block is detachably connected to the connecting groove.

[0013] According to one embodiment of this application, the filter screen includes a metal wire mesh layer and an activated carbon adsorption layer distributed axially along the air duct.

[0014] According to one embodiment of this application, the diameter of the air duct tends to increase from the second end to the first end of the air guide, and the fixing frame is disposed on the side of the connecting seat facing the first connector.

[0015] According to one embodiment of this application, the inner wall of the air duct is provided with a guide plate, which is set at an angle to the axis of the air duct.

[0016] According to one embodiment of this application, the guide plate is rotatably installed on the inner wall of the air duct, the angle between the guide plate and the axis of the air duct is adjustable, and a wind speed sensor is provided in the first connector.

[0017] According to one embodiment of this application, two guide vanes are installed on the same cross-section of the air duct, and the two guide vanes are symmetrically arranged along the axis of the air duct.

[0018] According to one embodiment of this application, a dust collection box is detachably installed at the bottom of the air guide, and the dust collection box is located on the side of the filter near the second connector.

[0019] According to one embodiment of this application, the outer wall of the air guide is provided with reinforcing ribs arranged circumferentially along the air duct, and the reinforcing ribs are evenly distributed along the length of the air duct.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic diagram of the furnace cooling device provided in the embodiments of this application;

[0023] Figure 2 This is a partial cross-sectional view of the furnace cooling device provided in the embodiments of this application;

[0024] Figure 3This is a schematic diagram of the assembly structure of the filter and air guide provided in the embodiments of this application;

[0025] Figure 4 This is another structural schematic diagram of the furnace cooling device provided in the embodiments of this application.

[0026] Figure label:

[0027] 100. Furnace / Kiln Cooling Device; 110. Air Guide Component; 111. Air Duct; 112. Connecting Seat; 120. First Connector; 121. First Double-Ended Screw; 122. First Locking Nut; 130. Second Connector; 131. Second Double-Ended Screw; 132. Second Locking Nut; 140. Filter Component; 141. Fixing Frame; 1411. Positioning Block; 142. Filter Screen; 150. Baffle Plate; 160. Dust Collection Box; 170. Reinforcing Rib. Detailed Implementation

[0028] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0029] The following is for reference. Figures 1-4 Describes a furnace cooling device according to an embodiment of this application.

[0030] Please see Figure 1 and Figure 2 The furnace cooling device 100 provided in this application embodiment includes an air guide 110, a first connector 120, a second connector 130, and a filter 140.

[0031] The air guide 110 has an air duct 111 extending from its first end to its second end; the first connector 120 is fixedly connected to the first end of the air guide 110, the first connector 120 has a square cross-section and is used to connect to the manhole of the annealing furnace; the second connector 130 is fixedly connected to the second end of the air guide 110, the second connector 130 has a circular cross-section and is used to connect to the air outlet of the axial flow fan; the filter element 140 is detachably installed in the air duct 111.

[0032] As a key component of the equipment, the air guide 110 plays a crucial role in guiding the cooling air. Its material can be high-temperature resistant carbon steel or stainless steel, capable of withstanding the high-temperature environment surrounding the furnace. The air duct 111 is the core channel of the air guide 110, manufactured using an integrated molding process to ensure a smooth inner wall and reduce resistance to the cooling airflow. For example, for some small furnaces, stainless steel plates with a thickness of 3-5 mm can be rolled and welded to form the air guide 110; while for large furnaces, thicker, higher-strength carbon steel is required, and specialized machining processes must be used to ensure the dimensional accuracy of the air duct 111.

[0033] The first connector 120 has a square cross-section to ensure precise matching with the square manhole of the annealing furnace. Besides welding and flange connections, its connection to the air guide 110 can also be achieved through riveting. When riveting, stainless steel rivets are used to ensure a secure connection and avoid the impact of high welding temperatures on the material properties of the air guide 110 and the first connector 120. The dimensions of the first connector 120 are customized according to the specifications of different annealing furnace manholes to ensure a tight installation and prevent cooling air leakage.

[0034] The circular cross-section of the second connector 130 is adapted to the air outlet of the axial flow fan. In terms of connection methods, in addition to common welding and flange connections, a clamp connection can also be used. The clamp connection has the advantage of convenient installation; by tightening the bolts on the clamp, the second connector 130 can be tightly fitted to the air outlet of the axial flow fan. The inner diameter of the second connector 130 is precisely designed according to the outer diameter of the air outlet of the axial flow fan to ensure good sealing performance.

[0035] The filter element 140 is detachably installed inside the air duct 111 for easy cleaning and replacement. The filter element 140 can filter dust, impurities, etc. in the cooling air, preventing them from entering the furnace and protecting the internal equipment of the furnace.

[0036] In actual operation, the first connector 120 is fixed to the first end of the air guide 110, the second connector 130 is fixed to the second end of the air guide 110, and the filter 140 is installed in the air duct 111 inside the air guide 110. The first connector 120 is then connected to the manhole of the annealing furnace, and the second connector 130 is connected to the outlet of the axial flow fan. After the axial flow fan is started, it generates a strong suction force, drawing in and pressurizing the outside cold air to form high-speed cooling air. The cooling air enters the air duct 111 of the air guide 110 through the second connector 130. Within the air duct 111, it is filtered by the filter 140 to remove dust, impurities, and other pollutants. The purified cooling air then smoothly enters the annealing furnace through the first connector 120, exchanging heat with the high-temperature gas inside the furnace, thereby cooling the furnace. The structure is simple, low-cost, and occupies little space, making it suitable for cooling furnaces in confined spaces.

[0037] According to the furnace cooling device 100 provided in this application embodiment, rapid cooling of the furnace is achieved through the cooperation of the air guide 110, the first connector 120, the second connector 130, and the filter 140. The first connector 120 is connected to the manhole of the annealing furnace, and the second connector 130 is connected to the air outlet of the axial flow fan. Together with the air duct 111 within the air guide 110, the cooling air can be efficiently introduced into the furnace, significantly shortening the cooling time. Simultaneously, the filter 140 is detachably installed within the air duct 111, effectively filtering impurities in the cooling air to prevent them from entering the furnace, protecting the internal equipment and extending its service life. Furthermore, the square design of the first connector 120 and the circular design of the second connector 130 better adapt to the different shapes of the annealing furnace manhole and the axial flow fan outlet, improving the device's versatility and ease of installation.

[0038] Please see Figure 1 In some embodiments, the first connector 120 may be provided with a first mounting hole, and a first double-ended screw 121 may be provided in the first mounting hole. A first locking nut 122 is fitted on the first double-ended screw 121. When connected to an annealing furnace, the first double-ended screw 121 and the first locking nut 122 can be used to fix the connection with the annealing furnace. Similarly, the second connector 130 may be provided with a second mounting hole, and a second double-ended screw 131 may be provided in the second mounting hole. A second locking nut 132 is fitted on the second double-ended screw 131. When connected to the outlet of an axial flow fan, the second double-ended screw 131 and the second locking nut 132 can be used to fix the connection with the outlet of the axial flow fan.

[0039] Please see Figure 2 and Figure 3 According to some embodiments of this application, the inner wall of the air duct 111 may be provided with a plurality of connecting seats 112 evenly distributed along its circumference. The filter element 140 includes a fixed frame 141 and a filter screen 142. The filter screen 142 is located in the central area of ​​the fixed frame 141. The fixed frame 141 is detachably connected to the plurality of connecting seats 112.

[0040] Connecting seats 112 can be disposed on the inner wall of the air duct 111 and evenly distributed circumferentially, providing installation positions for the filter element 140. Connecting seats 112 can be protruding structures made of metal, fixed to the inner wall of the air duct 111 by welding or integral molding. In one example, connecting seats 112 are typically made of the same metal as the air guide 110, and fixed to the inner wall of the air duct 111 by welding or bolting. The connecting seats 112 are evenly distributed circumferentially along the air duct 111, and their number is determined by the diameter of the air duct 111 and the size of the filter element 140; there can be two, three, four, or more. Taking two connecting seats 112 as an example, the two connecting seats 112 can be disposed at the top and bottom of the air duct 111, respectively.

[0041] The fixing frame 141 can be made of aluminum alloy or high-strength plastic. Aluminum alloy fixing frame 141 offers good strength and heat dissipation, while high-strength plastic is lightweight and low-cost. The shape of the fixing frame 141 matches the connecting seat 112, and corresponding connecting structures, such as clips and hooks, are provided at the connection points. The dimensions of the fixing frame 141 must ensure that the filter screen 142 can be tightly installed in its central area, and that the overall structure remains stable and does not wobble after installation on the connecting seat 112.

[0042] The filter screen 142 is made of different materials and has different mesh sizes depending on the actual filtration requirements. For filtering larger particles, a lower mesh size metal wire mesh, such as 20-40 mesh, can be used; for filtering fine particles, a higher mesh size fiber filter screen, such as 100-200 mesh, can be used. The filter screen 142 is fixed to the central area of ​​the fixing frame 141 by means of gluing, riveting, or snapping to ensure a firm installation and prevent it from falling off under the impact of cooling air.

[0043] In actual operation, the connecting seat 112 is securely fixed to the inner wall of the air duct 111, and the fixing frame 141 is detachably connected to the connecting seat 112 through its specific connection structure. The filter screen 142 is tightly installed in the central area of ​​the fixing frame 141. The three components work together to form a stable filtration structure. When the cooling air flows in the air duct 111, it first comes into contact with the filter screen 142. The filter screen 142 intercepts dust, impurities, etc. in the cooling air, allowing the purified cooling air to continue flowing towards the furnace. When it is necessary to clean or replace the filter screen 142, simply remove the fixing frame 141 from the connecting seat 112 for easy operation.

[0044] A connecting seat 112 is provided on the inner wall of the air duct 111, and the filter element 140 is composed of a fixed frame 141 and a filter screen 142, which can be detachably connected, significantly improving the convenience of installing, disassembling and replacing the filter element 140. This design makes the maintenance of the filter element 140 more efficient, and operators can quickly remove the filter element 140 for cleaning or replacement, reducing equipment downtime.

[0045] Please see Figure 2 and Figure 3 According to some embodiments of this application, the connecting seat 112 may be provided with a connecting groove, and the fixing frame 141 may be provided with a positioning block 1411 on the side facing the connecting seat 112. The positioning block 1411 may be detachably connected to the connecting groove.

[0046] A connecting groove is formed on the connecting seat 112, and its shape and size precisely match the positioning block 1411. The depth and width of the connecting groove are designed according to the size of the positioning block 1411. Generally, the depth is 0.8-1.2 times the height of the positioning block 1411, and the width is slightly larger than the width of the positioning block 1411 to ensure that the positioning block 1411 can be smoothly inserted into the connecting groove, while also having a certain degree of fitting accuracy to prevent the positioning block 1411 from shaking in the connecting groove. The inner wall of the connecting groove is smooth to reduce the frictional resistance when the positioning block 1411 is inserted and removed.

[0047] The positioning block 1411 can be integrally formed with the fixing frame 141, and the material is the same as that of the fixing frame 141. The positioning block 1411 is generally rectangular or cylindrical in shape, with a flat surface and rounded edges and corners, which facilitates insertion into the connecting groove.

[0048] The positioning block 1411 is precisely inserted into the connecting groove of the connecting seat 112, achieving a detachable connection between the fixing frame 141 and the connecting seat 112. This connection method not only serves a fixing function but also accurately positions the fixing frame 141, ensuring the accurate installation position of the filter element 140 within the air duct 111. The design of the connecting groove and the positioning block 1411 greatly improves the accuracy and convenience of installing the filter element 140. Through simple alignment and insertion operations, the installation of the filter element 140 can be completed quickly, reducing adjustment time during the installation process.

[0049] According to some embodiments of this application, the filter 142 may include a metal wire mesh layer and an activated carbon adsorption layer distributed axially along the air duct 111.

[0050] The metal wire mesh layer, as the first layer of the filter screen 142, is mainly used to intercept larger particles of impurities. The metal wire mesh is generally made of stainless steel, which has good corrosion resistance and strength. The mesh size is determined according to actual filtration needs, typically between 0.1 mm and 1 mm. For example, for working environments with high dust levels, a stainless steel wire mesh with a mesh size of 0.5 mm can be used; for furnaces and kilns with high requirements for impurity particle control, a wire mesh with a mesh size of 0.2 mm can be used. The metal wire mesh layer is fixed within the fixing frame 141 by welding, riveting, or gluing.

[0051] Activated carbon adsorption layer: Located behind the metal mesh layer, the activated carbon adsorption layer is mainly used to adsorb harmful gases and odors in the cooling air. Activated carbon can be granular or fibrous. Granular activated carbon has a larger specific surface area and better adsorption effect; fibrous activated carbon has better flexibility and air permeability. The thickness of the activated carbon adsorption layer is generally between 10 mm and 30 mm. It is fixed within the fixing frame 141 by filling, pasting, or other methods, located behind the metal mesh layer, ensuring that the cooling air passes through the metal mesh layer for filtration before entering the activated carbon adsorption layer.

[0052] The combination of a metal wire mesh layer and an activated carbon adsorption layer achieves multi-level filtration of the cooling air. The metal wire mesh layer effectively intercepts large particulate impurities, protecting the activated carbon adsorption layer from clogging and extending its service life. The activated carbon adsorption layer removes harmful gases and odors from the cooling air, not only improving the quality of the cooling air and better protecting the internal equipment of the furnace from corrosion by harmful gases, but also creating a safer and healthier working environment for furnace maintenance personnel, reducing the harm of harmful gases to human health.

[0053] Please see Figure 1 and Figure 2 According to some embodiments of this application, the diameter of the air duct 111 may increase from the second end to the first end of the air guide 110, and the fixing frame 141 may be provided on the side of the connecting seat 112 facing the first connector 120.

[0054] The diameter of the air duct 111 gradually increases from the second end to the first end of the air guide 110. This design facilitates the flow and distribution of cooling air within the air duct 111. The shape of the air duct 111 can be a regular frustum cone or an approximate frustum cone formed by splicing multiple cylindrical segments with gradually increasing diameters. For example, for a small furnace cooling device 100, the taper (diameter change rate) of the air duct 111 can be controlled between 5% and 10%; for large devices, the taper can be adjusted between 3% and 8% depending on the actual situation. The change in the diameter of the air duct 111 is achieved through specialized machining processes to ensure a smooth transition of the inner wall of the air duct 111, reducing turbulence and resistance loss of the cooling air during flow.

[0055] The fixing frame 141 is installed on the side of the connecting seat 112 facing the first connector 120. This arrangement allows sufficient space for the cooling air to undergo initial diffusion and stabilization before entering the filter screen 142 inside the fixing frame 141. The connection structure between the connecting seat 112 and the fixing frame 141 is rationally designed to ensure that the fixing frame 141 is firmly installed and will not shift under the impact of the cooling air. For example, a protruding locking platform can be provided on the connecting seat 112, and a corresponding locking groove can be provided on the fixing frame 141. The stable installation of the fixing frame 141 is achieved through the cooperation of the locking platform and the locking groove.

[0056] Please see Figure 2 and Figure 4 According to some embodiments of this application, the inner wall of the air duct 111 may be provided with a guide plate 150, and the guide plate 150 and the axis of the air duct 111 may be set at an angle.

[0057] The baffle 150 can be made of a high-temperature resistant, high-strength metal material, such as stainless steel or aluminum alloy. The shape of the baffle 150 is generally rectangular or trapezoidal, and its length is determined according to the diameter of the air duct 111 and actual requirements, and can be 0.5 to 1 times the diameter of the air duct 111. The angle between the baffle 150 and the axis of the air duct 111 can be selected between 30° and 60°. For example, a 45° angle can be selected for cases with large cooling airflow and high velocity; a 50° angle can be selected for cases with small cooling airflow.

[0058] In some examples, the baffle 150 is fixed to the inner wall of the air duct 111 by welding, bolting or riveting, with the fixing points evenly distributed to ensure that the baffle 150 is firmly installed and will not loosen under the impact of the cooling air.

[0059] The guide vane 150, in conjunction with other components within the air duct 111 (such as the filter element 140 and the connecting seat 112), influences the flow direction and speed of the cooling air. As the cooling air flows within the air duct 111, it encounters the guide vane 150. The guide vane 150 alters the flow direction of the cooling air, causing it to flow along its surface, thus creating a more uniform airflow distribution within the air duct 111. After being guided by the guide vane 150, the cooling air enters the furnace at a more uniform speed and direction, improving the heat exchange efficiency between the cooling air and the interior of the furnace, achieving more efficient cooling.

[0060] According to some embodiments of this application, the guide plate 150 is rotatably mounted on the inner wall of the air duct 111, the angle between the guide plate 150 and the axis of the air duct 111 is adjustable, and a wind speed sensor may be provided inside the first connector 120.

[0061] The guide vane 150 can be mounted on the inner wall of the air duct 111 via a specially designed rotating shaft. The rotating shaft and the guide vane 150 are integrally formed or welded together to ensure structural stability. Both ends of the rotating shaft are embedded in pre-set bushings on the inner wall of the air duct 111. The bushings are made of wear-resistant materials, such as copper alloy, to reduce rotational friction. This mounting method allows the guide vane 150 to rotate flexibly around the rotating shaft, thereby changing the angle between it and the axis of the air duct 111.

[0062] The adjustment methods are divided into manual and automatic. For manual adjustment, an adjustment rod is installed outside the air duct 111. One end of the adjustment rod passes through the wall of the air duct 111 and connects to the rotating shaft of the guide plate 150. The operator changes the angle of the guide plate 150 by rotating the adjustment rod. Automatic adjustment utilizes a motor and controller. The motor is connected to the rotating shaft, and the controller receives signals from the wind speed sensor. When the wind speed changes, the controller controls the motor to rotate forward and backward according to a preset program, thereby precisely adjusting the angle of the guide plate 150.

[0063] The wind speed sensor can be installed at the first connector 120, and can be a high-precision thermal wind speed sensor or an ultrasonic wind speed sensor. A thermal wind speed sensor calculates wind speed by measuring the heat transfer between a heating element and the airflow; an ultrasonic wind speed sensor measures wind speed by utilizing the difference in the propagation speed of ultrasonic waves in the airflow. The wind speed sensor converts the measured wind speed data into an electrical signal, which is transmitted to the controller (if an electric adjustment method is used) or provided to the operator for reference (if a manual adjustment method is used).

[0064] In actual operation, the wind speed sensor continuously monitors the cooling air speed entering the furnace and transmits the data to the regulating device. When the wind speed is too high, exceeding the set optimal cooling wind speed range, the operator manually adjusts the regulating rod to increase the angle between the guide plate 150 and the axis of the air duct 111. During automatic adjustment, the controller controls the motor to increase the angle of the guide plate 150, allowing the cooling air to impact the wall of the air duct 111 more, reducing the wind speed and making its distribution more uniform. When the wind speed is too low, the operation is reversed to decrease the angle of the guide plate 150, making the cooling air blown more concentrated towards the furnace, thereby ensuring that the cooling air enters the furnace at a suitable speed and distribution to achieve the best cooling effect.

[0065] The 150° rotatable and angle-adjustable baffle, combined with a wind speed sensor, allows the device to flexibly adjust the direction and distribution of cooling airflow according to actual wind speed conditions. This dynamic adjustment function further improves cooling efficiency and effectiveness, enhances the device's adaptability to different furnace and kiln operating conditions, and ensures stable and efficient cooling for the furnace and kiln under various circumstances.

[0066] Please see Figure 2 and Figure 4 According to some embodiments of this application, two guide vanes 150 are installed on the same cross-section of the air duct 111, and the two guide vanes 150 can be symmetrically arranged along the axis of the air duct 111.

[0067] The air duct 111 may be provided with multiple pairs of guide plates 150 distributed along its length. Each pair of guide plates 150 is equivalent to two guide plates 150. By setting multiple pairs of guide plates 150, the air guiding effect of the guide plates 150 is improved.

[0068] The material, structure, and installation method of each pair of guide vanes 150 are basically the same as those of a single guide vane 150, but the size can be finely adjusted according to the cross-sectional size of the air duct 111. The two guide vanes 150 can be symmetrically installed on the same cross-section along the axis of the air duct 111, with the center of symmetry coinciding with the axis of the air duct 111.

[0069] The two guide vanes 150 are connected to the inner wall of the air duct 111 via their respective rotating shafts and are symmetrical about the axis of the air duct 111. Their adjustment devices (manual adjustment rods or motors) can be controlled independently or synchronously adjusted through a linkage mechanism to ensure that the angles of the two guide vanes 150 remain consistent at all times.

[0070] Two guide vanes 150 are symmetrically arranged on the same cross-section, which further enhances the guiding effect on the cooling air. Compared with a single guide vane 150, the cooling air can be distributed more evenly in the air duct 111, avoiding situations where the local wind speed is too high or too low, thereby improving the uniformity of the cooling effect, helping to cool the furnace more efficiently, and improving the overall performance of the furnace cooling device 100.

[0071] Please see Figure 1 , Figure 2 and Figure 4 According to some embodiments of this application, a dust collection box 160 is detachably installed at the bottom of the air guide 110, and the dust collection box 160 is located on the side of the filter 140 near the second connector 130.

[0072] The dust collection box 160 can be made of plastic or metal. A plastic dust collection box 160 is lightweight, low-cost, and has some corrosion resistance; a metal dust collection box 160 is high-strength and more suitable for use in harsh environments. The dust collection box 160 is generally rectangular or trapezoidal in shape, and its volume is determined based on the filtration capacity of the filter element 140 and the amount of dust in the furnace environment, typically between 0.5 liters and 2 liters. The top opening of the dust collection box 160 corresponds to the bottom opening of the air guide 110, and a sealing strip is provided at the edge of the opening to prevent dust leakage.

[0073] The dust collection box 160 is connected to the bottom of the air guide 110 via snap-fit, drawer-type, or magnetic methods. Snap-fit ​​connections involve interlocking hooks and slots on the bottoms of both the dust collection box 160 and the air guide 110. Drawer-type connections use a sliding track on the bottom of the air guide 110, allowing the dust collection box 160 to be inserted like a drawer. Magnetic connections use magnetic materials on the bottoms of both the dust collection box 160 and the air guide 110, securing them with magnetic attraction. The dust collection box 160 is located on the side of the filter 140 near the second connector 130; filtered dust falls directly into the dust collection box 160 under gravity.

[0074] In actual operation, when the cooling air passes through the filter element 140, dust and impurities are intercepted. Over time, these impurities fall downwards under gravity and enter the dust collection box 160 below. When the dust collection box 160 collects a large amount of dust, it can be disassembled for cleaning depending on the connection method. For example, a snap-on dust collection box 160 can be removed by simply pressing the hook; a drawer-type dust collection box 160 can be pulled out directly for cleaning; and a magnetic dust collection box 160 can be directly separated. The design of the dust collection box 160 facilitates the collection and cleaning of filtered impurities, preventing impurities from accumulating in the air duct 111. Accumulated impurities may affect the flow of cooling air, reduce the filtration effect, and even damage the equipment.

[0075] Please see Figure 1 , Figure 2 and Figure 4 According to some embodiments of this application, the outer wall of the air guide 110 may be provided with reinforcing ribs 170 arranged circumferentially along the air duct 111, and the reinforcing ribs 170 are evenly distributed along the length direction of the air duct 111.

[0076] The reinforcing rib 170 is generally made of the same metal as the air guide 110 and is connected to the air guide 110 by welding or integral molding. The shape of the reinforcing rib 170 is triangular, trapezoidal, or rectangular, with triangular reinforcing ribs 170 being more commonly used due to their good structural stability. The height of the reinforcing rib 170 is generally 1.5 to 3 times the wall thickness of the air guide 110, and the thickness is 0.8 to 1.2 times the wall thickness. The reinforcing ribs 170 are evenly distributed around the circumference of the air duct 111, and the spacing between adjacent reinforcing ribs 170 is determined according to the diameter and strength requirements of the air guide 110, and is not specifically limited.

[0077] During the operation of the furnace cooling device 100, the air guide 110 is subjected to the pressure of the internal cooling air and various forces from the external environment. The reinforcing rib 170 can disperse these external forces, evenly distributing the pressure and stress acting on the air guide 110 to the entire structure, improving the deformation resistance of the air guide 110, and preventing the air guide 110 from twisting, denting, or other deformations under harsh environments such as high temperature and high pressure.

[0078] The addition of reinforcing ribs 170 significantly improves the structural strength and stability of the air guide 110. This enables the air guide 110 to operate normally in harsh working environments, reducing problems such as cooling air leakage and poor cooling effect caused by deformation of the air guide 110. This extends the service life of the device, reduces equipment maintenance costs, and ensures the reliable operation of the furnace cooling device 100.

[0079] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0080] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0081] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0082] In the description of this application, "multiple" means two or more.

[0083] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0084] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0085] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0086] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A furnace cooling device, characterized in that, include: An air guide component, wherein an air duct extends from its first end to its second end; The first connector is fixedly connected to the first end of the air guide. The cross-section of the first connector is square. The first connector is used to connect to the manhole of the annealing furnace. The second connector is fixedly connected to the second end of the air guide. The cross-section of the second connector is circular. The second connector is used to connect to the air outlet of the axial flow fan. The filter element is detachably installed inside the air duct.

2. The furnace cooling device according to claim 1, characterized in that, The inner wall of the air duct is provided with a plurality of connecting seats evenly distributed along its circumference. The filter element includes a fixed frame and a filter screen. The filter screen is located in the central area of ​​the fixed frame. The fixed frame is detachably connected to the plurality of connecting seats.

3. The furnace cooling device according to claim 2, characterized in that, The connecting seat is provided with a connecting groove, and the fixing frame is provided with a positioning block on the side facing the connecting seat. The positioning block is detachably connected to the connecting groove.

4. The furnace cooling device according to claim 2, characterized in that, The filter screen includes a metal wire mesh layer and an activated carbon adsorption layer distributed along the axial direction of the air duct.

5. The furnace cooling device according to claim 2, characterized in that, The diameter of the air duct increases from the second end to the first end of the air guide, and the fixing frame is located on the side of the connecting seat facing the first connector.

6. The furnace cooling device according to any one of claims 1-5, characterized in that, The inner wall of the air duct is provided with a guide plate, which is set at an angle to the axis of the air duct.

7. The furnace cooling device according to claim 6, characterized in that, The guide plate is rotatably installed on the inner wall of the air duct, and the angle between the guide plate and the axis of the air duct is adjustable. The first connector is equipped with a wind speed sensor.

8. The furnace cooling device according to claim 7, characterized in that, Two guide vanes are installed on the same cross-section of the air duct, and the two guide vanes are symmetrically arranged along the axis of the air duct.

9. The furnace cooling device according to any one of claims 1-5, characterized in that, A dust collection box is detachably installed at the bottom of the air guide, and the dust collection box is located on the side of the filter element near the second connector.

10. The furnace cooling device according to any one of claims 1-5, characterized in that, The outer wall of the air guide is provided with reinforcing ribs arranged circumferentially along the air duct, and the reinforcing ribs are evenly distributed along the length of the air duct.

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