A uniform airflow guiding structure for cooling air in a bell-type furnace

Abstract

This invention belongs to the field of furnace airflow guidance technology, specifically disclosing a uniform cooling airflow guidance structure for a bell-type furnace. It includes a central swirling airflow guide cylinder, with connecting flanges fixedly connected to both its upper and lower ends. A bowl-shaped diffuser plate is provided at the end of the upper connecting flange furthest from the central swirling airflow guide cylinder. Spiral guide blades are fixedly connected inside the central swirling airflow guide cylinder. An installation mechanism is provided inside the central swirling airflow guide cylinder, and an automatic cleaning mechanism is provided outside the installation mechanism. A filter is installed inside the central swirling airflow guide cylinder. The filter is installed inside the central swirling airflow guide cylinder by the installation mechanism, and the surface of the filter is cleaned by the automatic cleaning mechanism, preventing dust and hard particles from entering the interior of the central swirling airflow guide cylinder. This prevents uneven airflow from causing excessive product cooling temperature differences, improves product quality, and extends the service life of the central swirling airflow guide cylinder.

Description

Technical Field

[0001] This invention belongs to the field of furnace flow guidance technology, and specifically discloses a uniform flow guidance structure for cooling air in a bell-type furnace. Background Technology

[0002] The bell-type furnace cooling air uniform flow guiding structure is distributed and assembled in multiple locations, including the furnace platform, steel coil stacks, inner wall of the inner hood, and cooling hood interlayer. It consists of components such as a pressure-stabilizing air box, baffle plates, and a central flow guiding assembly. The flow guiding assembly is vertically positioned between the furnace platform circulating fan and the steel coil stack. Its core consists of a bottom central swirl guide cylinder and an upper bowl-shaped diffuser guide plate. The central swirl guide cylinder connects to the fan and completes the first-stage rectification of the columnar airflow by twisting it with built-in spiral blades. The bowl-shaped diffuser guide plate is coaxially positioned at the top of the guide cylinder, evenly distributing the vertical airflow radially along the arc-shaped ribs, eliminating dead zones in the airflow. Together, these two components ensure that the protective gas inside the furnace passes evenly through the steel coil layers, achieving balanced heat exchange and cooling.

[0003] Currently, in the uniform airflow distribution structure of bell-type furnaces, the fan connected to the central swirl guide tube draws gas from inside the furnace into the central swirl guide tube. This leads to the long-term accumulation of fine dust inside the furnace, which blocks the flow channels of the bowl-shaped diffuser plate. Consequently, uneven air distribution results in excessive product cooling temperature differences, reducing product quality. At the same time, annealing inside the furnace produces hard particles such as metal particles. These hard particles, carried by the high-speed airflow, erode the spiral blades inside the central swirl guide tube, thereby reducing the service life of the central swirl guide tube. Summary of the Invention

[0004] In view of this, the purpose of this invention is to propose a uniform airflow guiding structure for bell-type furnace cooling air, so as to solve the problem that dust and hard metal particles inside the central vortex guide tube of the prior art flow with the airflow, causing blockage of the flow channel of the bowl-shaped diffuser and wear of the spiral blades, which in turn leads to a decline in product quality and a reduction in the service life of the central vortex guide tube.

[0005] To achieve the above objectives, the present invention provides a uniform cooling air guiding structure for a bell-type furnace, comprising a central swirling guide tube, with connecting flanges fixedly connected to both the upper and lower ends of the central swirling guide tube. A bowl-shaped diffuser is provided at the end of the upper connecting flange away from the central swirling guide tube. Spiral guide blades are fixedly connected inside the central swirling guide tube. An installation mechanism is provided inside the central swirling guide tube, and an automatic cleaning mechanism is provided outside the installation mechanism. A filter is provided inside the central swirling guide tube. The installation mechanism is used to install the filter, and the automatic cleaning mechanism is used to clean the filter. A connecting mechanism is provided inside the upper connecting flange, and the connecting mechanism is used to install the upper connecting flange and the bowl-shaped diffuser.

[0006] In the above technical solution, preferably, the installation mechanism includes an insertable hollow column, an insertable hollow column with a retaining spring inside, a limit plate slidably connected inside the insertable hollow column, a movable column fixedly connected to the end of the limit plate away from the retaining spring, an installation frame fixedly connected to the end of the movable column away from the limit plate, multiple installation blocks fixedly connected to the outside of the installation frame, an annular groove opened at the bottom of the inner wall of the central vortex guide tube, multiple sliding grooves opened at the bottom of the inner wall of the insertable hollow column, multiple locking grooves opened at the bottom of the inner wall of the central vortex guide tube, an insertion hole groove opened in the middle of the filter, the top of the insertable hollow column inserted into the insertion hole groove, a hexagonal column fixedly connected to the top of the insertion hole groove, a blocking ring fixedly connected to the inside of the central vortex guide tube above the filter, a hexagonal groove opened at the top of the insertable hollow column, and the hexagonal column inserted into the hexagonal groove.

[0007] In the above technical solution, preferably, the automatic cleaning mechanism includes a mounting ring, the middle of which is sleeved on the outside of the inserted hollow column. Multiple cleaning brushes are fixedly connected to the outside of the mounting ring. A sliding sleeve is fixedly connected to the end of the mounting ring furthest from the filter. Multiple limiting grooves are formed on the outer wall of the sliding sleeve. A fixed sleeve is slidably connected to the inner side of the sliding sleeve. Multiple limiting teeth are fixedly connected to the top of the fixed sleeve. The limiting teeth are slidably connected inside the limiting grooves. The fixed sleeve is fixedly connected to the outside of the inserted hollow column. An impeller is fixedly connected to the outside of the movable column. Multiple fixed columns are fixedly connected to the bottom of the fixed sleeve. Multiple limiting blocks are slidably connected inside the fixed columns. A movable rod is fixedly connected to the bottom of each limiting block. The bottoms of the multiple movable rods are all fixedly connected to the top of the impeller. A retaining spring is fixedly connected between the mounting ring and the fixed sleeve.

[0008] In the above technical solution, preferably, the connecting mechanism includes multiple mounting columns, the exterior of which are respectively disposed in multiple holes inside the connecting flange. A limiting plate is slidably connected inside each mounting column, and a return spring is disposed inside each mounting column. A connecting rod is fixedly connected to the bottom of the limiting plate, and a rotating support is rotatably connected to the bottom of the connecting rod. A flip plate is fixedly connected to the exterior of the rotating support. A top cylinder is fixedly connected to the top of the limiting plate, and a pushing spring is disposed inside the top cylinder. A sliding disc is slidably connected inside the top cylinder, and multiple abutment rods are fixedly connected to the exterior of the sliding disc. Multiple sliding grooves are formed on the outer wall of the top cylinder, and the abutment rods are slidably connected inside the sliding grooves. Multiple support feet are rotatably connected to the exterior of the top cylinder, and a limiting plate is fixedly connected to the top of each support foot. A pressing column is fixedly connected to the top of the sliding disc.

[0009] In the above technical solution, preferably, one end of the clamping spring is fixedly connected to the inside of the inserted hollow column, and the other end of the clamping spring is fixedly connected to the top of the limiting plate.

[0010] In the above technical solution, preferably, the inner wall of the inserted hollow column is provided with a plurality of limiting sliding grooves, and the outside of the limiting plate is fixedly connected with a plurality of limiting sliding strips, the limiting sliding strips being slidably connected inside the limiting sliding grooves.

[0011] In the above technical solution, preferably, the card slot and the sliding groove are staggered, and the interior of both the card slot and the sliding groove are connected to the annular groove.

[0012] In the above technical solution, preferably, one end of the reset spring is fixedly connected to the inside of the mounting column, and the other end of the reset spring is fixedly connected to the bottom of the limiting plate.

[0013] In the above technical solution, preferably, one end of the push spring is fixedly connected to the inside of the top cylinder, and the other end of the push spring is fixedly connected to the bottom of the sliding disc.

[0014] In the above technical solution, preferably, a round handle is fixedly connected to the top of the pressing column, the pressing column passes through the top of the top cylinder, the outside of the top cylinder is slidably connected to the top of the mounting column, and the connecting rod passes through the bottom of the mounting column.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This invention installs the filter inside the central vortex guide tube using an installation mechanism and cleans the surface of the filter using an automatic cleaning mechanism. This allows the filter to filter dust and hard particles that flow with the airflow, thus preventing dust and hard particles from entering the interior of the central vortex guide tube. This prevents fine dust from accumulating and clogging the flow channels of the bowl-shaped diffuser plate, avoiding uneven air distribution that could lead to excessive product cooling temperature differences, improving product quality. At the same time, it prevents hard particles from eroding the spiral blades, thereby extending the service life of the central vortex guide tube.

[0017] 2. The present invention enables the rapid disassembly and assembly of the central vortex guide tube and the bowl-shaped diffuser plate through the connecting mechanism, thereby avoiding the use of bolts for flange splicing, thus avoiding the risk of bolt stripping and preventing violent disassembly, thus improving the practicality of the guide structure. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2This is a schematic diagram of the internal structure of the central vortex guide tube of the present invention;

[0020] Figure 3 This is a schematic diagram of the annular groove of the present invention;

[0021] Figure 4 This is a schematic diagram of the mounting block of the present invention;

[0022] Figure 5 This is a schematic diagram of the internal structure of the hollow column inserted in this invention;

[0023] Figure 6 This is a schematic diagram of the automatic cleaning mechanism of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the fixing sleeve of the present invention;

[0025] Figure 8 This is a schematic diagram of the internal structure of the fixing column of the present invention;

[0026] Figure 9 This is a schematic diagram of the connection mechanism of the present invention;

[0027] Figure 10 This is a schematic diagram of the internal structure of the mounting column of the present invention.

[0028] In the diagram: 1. Central swirl guide tube; 2. Connecting flange; 3. Bowl-shaped diffuser plate; 4. Spiral guide vane; 5. Mounting mechanism; 501. Insert-in hollow column; 502. Clamping spring; 503. Limiting plate; 504. Movable column; 505. Mounting frame; 506. Mounting block; 507. Annular groove; 508. Sliding groove; 509. Slot; 510. Insertion hole groove; 511. Hexagonal column; 512. Blocking ring; 513. Hexagonal groove; 514. Limiting sliding groove; 515. Limiting slide bar; 6. Automatic cleaning mechanism; 601. Mounting ring; 602. Cleaning brush; 603. 604. Sliding sleeve; 605. Limiting groove; 606. Fixed sleeve; 607. Limiting tooth block; 608. Impeller; 609. Fixed column; 610. Limiting block; 611. Movable rod; 612. Sticking spring; 7. Filter; 8. Connecting mechanism; 801. Mounting column; 802. Limiting plate; 803. Return spring; 804. Connecting rod; 805. Rotating support; 806. Flipping plate; 807. Top cylinder; 808. Pushing spring; 809. Sliding plate; 810. Abutment rod; 811. Slide groove; 812. Support foot; 813. Limiting plate; 814. Pressing column; 815. Round handle. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0031] like Figures 1-10 The diagram shows a uniform cooling air guiding structure for a bell-type furnace, comprising a central swirling guide cylinder 1, with connecting flanges 2 fixedly connected to both the upper and lower ends of the central swirling guide cylinder 1. A bowl-shaped diffuser plate 3 is provided at the end of the upper connecting flange 2 away from the central swirling guide cylinder 1. Spiral guide blades 4 are fixedly connected inside the central swirling guide cylinder 1. An installation mechanism 5 is provided inside the central swirling guide cylinder 1. An automatic cleaning mechanism 6 is provided outside the installation mechanism 5. A filter 7 is provided inside the central swirling guide cylinder 1. The installation mechanism 5 is used to install the filter 7, and the automatic cleaning mechanism 6 is used to clean the filter 7. A connecting mechanism 8 is provided inside the upper connecting flange 2. The connecting mechanism 8 is used to install the upper connecting flange 2 and the bowl-shaped diffuser plate 3.

[0032] The mounting mechanism 5 includes a hollow insert column 501, which provides an installation position. A retaining spring 502 is installed inside the hollow insert column 501. The retaining spring 502 uses its own elasticity to press against the middle of the filter 7 using the hollow insert column 501, thus facilitating the installation of the filter 7. A limiting plate 503 is slidably connected inside the hollow insert column 501, serving a limiting function. A movable column 504 is fixedly connected to the end of the limiting plate 503 away from the retaining spring 502, serving a connecting function. A mounting frame 505 is fixedly connected to the end of the movable column 504 away from the limiting plate 503, providing the installation position and... After 505 is inserted into the interior of the central vortex guide tube 1, it can maintain the stability of the inserted hollow column 501 and the movable column 504. Multiple mounting blocks 506 are fixedly connected to the outside of the mounting frame 505. An annular groove 507 is opened at the bottom of the inner wall of the central vortex guide tube 1. Multiple sliding grooves 508 are opened at the bottom of the inner wall of the inserted hollow column 501. Multiple retaining grooves 509 are opened at the bottom of the inner wall of the central vortex guide tube 1. The mounting block 506 can slide into the sliding groove 508 and rotate through the annular groove 507 to the retaining groove 509, thus securing the mounting block 506 and completing the installation of the mounting frame 505. This allows the filter 7 to be installed using the mounting mechanism 5. The filter 7 has a central opening... A insertion slot 510 is provided to provide space for inserting a hollow column 501. The top of the hollow column 501 is inserted into the insertion slot 510. A hexagonal column 511 is fixedly connected to the top of the insertion slot 510. A blocking ring 512 is fixedly connected to the interior of the central vortex guide tube 1 above the filter 7. The blocking ring 512 can abut against the top of the filter 7, thereby preventing the filter 7 from sliding into the interior of the central vortex guide tube 1. A hexagonal groove 513 is opened at the top of the hollow column 501. After the hexagonal column 511 is inserted into the hexagonal groove 513, it can stably insert the hollow column 501 and prevent the hollow column 501 from rotating inside the insertion slot 510. A hexagonal column 511 is inserted into the interior of a hexagonal slot 513. One end of a retaining spring 502 is fixedly connected to the interior of the inserted hollow column 501, and the other end of the retaining spring 502 is fixedly connected to the top of a limiting plate 503. Multiple limiting sliding grooves 514 are provided on the inner wall of the inserted hollow column 501. Multiple limiting slides 515 are fixedly connected to the exterior of the limiting plate 503. The cooperation between the limiting slides 515 and the limiting sliding grooves 514 can prevent the limiting plate 503 from rotating inside the inserted hollow column 501. The limiting slides 515 are slidably connected inside the limiting sliding grooves 514. The slot 509 and the sliding groove 508 are staggered. The interiors of the slot 509 and the sliding groove 508 are connected to the annular groove 507.

[0033] After the fan is connected to the connecting flange 2 at the bottom of the central vortex guide tube 1, the fan is started. The fan draws air from the bell-shaped furnace and filters it through the filter 7. This prevents fine dust from accumulating and clogging the flow channel of the bowl-shaped diffuser plate 3, which would cause uneven air distribution and excessive temperature difference in the cooling of the steel coil. It also prevents hard metal particles from continuously eroding the spiral blades, thereby preventing high-speed airflow from carrying abrasive materials that wear down the parts and improving the overall service life of the central vortex guide tube 1 and the spiral guide blades 4. When installing the filter 7, first place the filter 7 inside the central vortex guide tube 1, ensuring that the top of the filter 7 contacts the baffle ring 512. Next, after placing the mounting frame 505, movable column 504, insert hollow column 501, and the internal structure of the insert hollow column 501 into the center vortex guide tube 1, insert the top of the insert hollow column 501 into the insert slot 510, and insert the hexagonal column 511 into the hexagonal groove 513. At this time, since the filter 7 is blocked by the blocking ring 512, align the mounting block 506 with the sliding groove 508, and push the mounting frame 505 into the center vortex guide tube 1 again, so that the mounting block 506 can slide into the ring groove 507 through the sliding groove 508. At this time, the mounting frame 505 drives the movable column 504. 4. The limiting plate 503 moves upward, thereby pressing the clamping spring 502. The mounting frame 505 rotates, which in turn drives the movable column 504, the limiting plate 503, the plug-in hollow column 501, the hexagonal column 511, and the filter 7 to rotate. After aligning the mounting block 506 with the slot 509, the mounting frame 505 is released. At this time, under the reaction force of the clamping spring 502, the limiting plate 503 and the movable column 504 can be pushed downward, which can also drive the mounting frame 505 and the mounting block 506 downward, so that the mounting block 506 is engaged in the slot 509. At this time, the clamping spring 502... 2 is still in a compressed state, and then the filter 7 can be installed inside the central vortex guide tube 1. When removing the filter 7, simply move the mounting frame 505 upward so that the mounting block 506 slides out of the slot 509 and into the annular groove 507. Then rotate the mounting frame 505 so that the mounting block 506 moves onto the sliding groove 508. At this time, the mounting block 506 can be slid out through the sliding groove 508, and then the mounting frame 505 can be slid out of the central vortex guide tube 1. The mounting mechanism 5 can be taken out from the central vortex guide tube 1, and then the filter 7 can be removed from the central vortex guide tube 1.

[0034] The automatic cleaning mechanism 6 includes a mounting ring 601, which provides an installation position. The middle part of the mounting ring 601 is sleeved on the outside of the inserted hollow column 501. Multiple cleaning brushes 602 are fixedly connected to the outside of the mounting ring 601. The rotation of the cleaning brushes 602 can scrape off the dust and hard particles at the bottom of the filter 7. A sliding sleeve 603 is fixedly connected to the end of the mounting ring 601 away from the filter 7. Multiple limiting grooves 604 are opened on the outer wall of the sliding sleeve 603. A fixed sleeve 605 is slidably connected to the inner side of the sliding sleeve 603. Multiple limiting teeth 606 are fixedly connected to the top of the fixed sleeve 605. The limiting teeth 606 slide inside the limiting grooves 604 and can drive the sliding sleeve 603 and the mounting ring 601 to rotate when the fixed sleeve 605 rotates with the movable column 504. The limiting teeth 606 are slidably connected inside the limiting grooves 604 and fixed. The sleeve 605 is fixedly connected to the outside of the plug-in hollow column 501. An impeller 607 is fixedly connected to the outside of the movable column 504. The impeller 607 can rotate under the flow of gas. Multiple fixed columns 608 are fixedly connected to the bottom of the fixed sleeve 605. Multiple limiting blocks 609 are slidably connected inside the fixed column 608. The limiting blocks 609 have a limiting function. A movable rod 610 is fixedly connected to the bottom of the limiting block 609. After the movable rod 610 slides inside the fixed column 608, it can prevent the impeller 607 from moving after following the movable column 504 and causing motion interference. The bottom of the multiple movable rods 610 is fixedly connected to the top of the impeller 607. A clamping spring 611 is fixedly connected between the mounting ring 601 and the fixed sleeve 605. The clamping spring 611 can use its own elasticity to make the mounting ring 601 and the cleaning brush 602 stick tightly to the bottom of the filter 7.

[0035] After the fan sends air into the central vortex guide tube 1, it drives the impeller 607 to rotate. The rotation of the impeller 607 drives the movable rod 610 and the fixed column 608 to rotate, which in turn drives the fixed sleeve 605 and the limiting tooth block 606 to rotate. Since the limiting tooth block 606 slides inside the limiting groove 604, it drives the sliding sleeve 603 to rotate, which in turn drives the mounting ring 601 and the cleaning brush 602 to rotate. Thus, the cleaning brush 602 can scrape off the impurities on the filter 7. Furthermore, since the spring 611 has elasticity, it can use its own reaction force to give the mounting ring 601 an upward force, which can then be transmitted to the cleaning brush 602, so that the cleaning brush 602 can be tightly attached to the bottom of the filter 7. At the same time, when the movable column 504 slides towards the direction of the hollow column 501, it can drive the impeller 607 to move towards the direction of the hollow column 501. At this time, the movable rod 610 will slide into the interior of the fixed column 608 to avoid the movement of the movable column 504 and the occurrence of motion interference.

[0036] The connecting mechanism 8 includes multiple mounting posts 801, which provide installation positions and can be inserted into the holes at the bottom of the connecting flange 2 and the bowl-shaped diffuser plate 3. The external parts of the multiple mounting posts 801 are respectively disposed in multiple holes inside the connecting flange 2. A limiting plate 802 is slidably connected inside the mounting posts 801, serving a limiting function and providing the installation position. A return spring 803 is installed inside the mounting posts 801, which can use its own elastic force to push the limiting plate 802 upward and reset it. A connecting rod 804 is fixedly connected to the bottom of the limiting plate 802, serving a connecting function. A rotating support 805 is rotatably connected to the bottom of the connecting rod 804. When the rotating support 805 is vertical... When the connecting rod 804 is pulled down and the rotating support 805 is in a horizontal position, the limiting plate 802 can move upward. A flip plate 806 is fixedly connected to the outside of the rotating support 805. When the flip plate 806 is pulled down, the rotating support 805 is in a horizontal position; when the flip plate 806 is rotated upward, the rotating support 805 is in a vertical position. A top cylinder 807 is fixedly connected to the top of the limiting plate 802, providing an installation position. A push spring 808 is installed inside the top cylinder 807, and a sliding plate 809 is slidably connected inside the top cylinder 807. The sliding plate 809 has a limiting function; the push spring 808 can push the sliding plate 809 upward. A sliding plate 809 is fixedly connected to the outside of the sliding plate 809. Multiple abutment rods 810 are provided, and multiple sliding grooves 811 are formed on the outer wall of the top cylinder 807. The sliding grooves 811 provide space for the movement of the abutment rods 810 and restrict the sliding disc 809 to prevent it from rotating. The abutment rods 810 are slidably connected inside the sliding grooves 811. Multiple support legs 812 are rotatably connected to the outside of the top cylinder 807. The upward rotation of the abutment rods 810 can lift the support legs 812, and the downward movement of the abutment rods 810 can provide the conditions for the support legs 812 to rotate downward. A limiting plate 813 is fixedly connected to the top of the support legs 812. After the limiting plate 813 abuts against the outside of the top cylinder 807, it can prevent the support legs 812 from continuing to rotate upward, thereby preventing the support legs 812 from rotating upward under force, and thus enabling the support legs 812 to provide support. A pressing column 814 is fixedly connected to the top of the sliding disk 809. The pressing column 814 can push the sliding disk 809 downward. One end of the return spring 803 is fixedly connected to the inside of the mounting column 801, and the other end of the return spring 803 is fixedly connected to the bottom of the limiting disk 802. One end of the push spring 808 is fixedly connected to the inside of the top cylinder 807, and the other end of the push spring 808 is fixedly connected to the bottom of the sliding disk 809. A round handle 815 is fixedly connected to the top of the pressing column 814. The round handle 815 can facilitate the operator to push the pressing column 814 downward. The pressing column 814 passes through the top of the top cylinder 807. The outside of the top cylinder 807 is slidably connected to the top of the mounting column 801. The connecting rod 804 passes through the bottom of the mounting column 801.

[0037] When disassembling the bowl-shaped diffuser plate 3, the flip plate 806 is flipped downwards, which allows the rotating support 805 to change from a vertical to a horizontal state. Under the reaction force of the return spring 803, the limiting plate 802 and connecting rod 804 are pushed upwards, which in turn moves the top cylinder 807 upwards. At this point, the round handle 815 is pressed downwards, which in turn moves the pressing column 814 and sliding plate 809 downwards, thereby moving the abutment rod 810 downwards. This ensures that the abutment rod 810 does not abut against the inner top of the sliding plate 809. Meanwhile, the support foot 812 follows the top cylinder 807 downwards. As the support leg 812 moves upward, it is not blocked by the abutment 810 inside. Therefore, under the action of gravity, it will rotate towards the top cylinder 807, causing the support leg 812 to retract. At this time, the mounting column 801 and the support leg 812 can be pulled out from the hole at the bottom of the bowl-shaped diffuser plate 3 and the hole on the connecting flange 2. After pulling out multiple connecting mechanisms 8 in sequence, the bowl-shaped diffuser plate 3 can be removed from the top of the connecting flange 2. When installing the bowl-shaped diffuser plate 3, the rotating support 805 is placed horizontally. When inserting the mounting column 801 into the hole at the bottom of the connecting flange 2 and the bowl-shaped diffuser plate 3, the inner side of the support leg 812 and the abutment 810 will retract. All contact surfaces are inclined, allowing the push rod 810 to move downwards under pressure. This allows the inner wall of the hole to compress the support leg 812, causing it to rotate and retract towards the top cylinder 807. After the connecting mechanism 8 passes through the hole at the bottom of the bowl-shaped diffuser plate 3, the reaction force of the push spring 808 pushes the sliding plate 809 upwards, causing the push rod 810 to move upwards and opening the support leg 812. At this time, the limiting plate 813 also abuts against the outer wall of the top cylinder 807, preventing the support leg 812 from rotating. Furthermore, the limiting plate 813 prevents the support leg 812 from rotating under pressure. Rotating the rotating plate 806 upwards changes the rotating support 805 from a horizontal to a vertical position, pulling the connecting rod 804 and the limiting plate 802 downwards. This, in turn, moves the top cylinder 807 and the support foot 812 downwards, causing the support foot 812 to press firmly against the bottom and top of the bowl-shaped diffuser plate 3. The bottom of the connecting flange 2 is then held in place by the rotating support 805, allowing the connecting mechanism 8 to be installed between the connecting flange 2 and the bottom of the bowl-shaped diffuser plate 3. This allows the bowl-shaped diffuser plate 3 to be installed on the top of the upper connecting flange 2, thus completing the installation of the bowl-shaped diffuser plate 3.

[0038] Working principle: After the fan is connected to the connecting flange 2 at the bottom of the central vortex guide tube 1, the fan is started. The fan draws air from the bell-shaped furnace and filters it through the filter 7. This prevents fine dust from accumulating and clogging the flow channel of the bowl-shaped diffuser plate 3, which would cause uneven air distribution and excessive temperature difference in the cooling of the steel coil. It also prevents hard metal particles from continuously eroding the spiral blades, thereby preventing high-speed airflow from carrying abrasive materials that wear down the parts, and improving the overall service life of the central vortex guide tube 1 and the spiral guide blades 4. When installing the filter 7, first place the filter 7 inside the central vortex guide tube 1, ensuring that the top of the filter 7 is flush with the baffle ring 5. After contacting the 12th component, place the mounting frame 505, movable column 504, insert hollow column 501, and the internal structure of the insert hollow column 501 into the interior of the central vortex guide cylinder 1. Then, insert the top of the insert hollow column 501 into the insert slot 510 and insert the hexagonal column 511 into the hexagonal groove 513. At this time, since the filter 7 is blocked by the blocking ring 512, align the mounting block 506 with the sliding groove 508 and push the mounting frame 505 into the interior of the central vortex guide cylinder 1 again, so that the mounting block 506 can slide into the annular groove 507 through the sliding groove 508. At this time, the mounting frame 505 drives the movable column 504. The column 504 and the limiting plate 503 move upward, thereby using the limiting plate 503 to press the clamping spring 502. The mounting frame 505 rotates, which in turn drives the movable column 504, the limiting plate 503, the insertable hollow column 501, the hexagonal column 511, and the filter 7 to rotate. After aligning the mounting block 506 with the slot 509, the mounting frame 505 is released. At this point, under the reaction force of the clamping spring 502, the limiting plate 503 and the movable column 504 move downward, which in turn drives the mounting frame 505 and the mounting block 506 downward, causing the mounting block 506 to engage with the slot 509. Meanwhile, the clamping spring... 502 is still in a compressed state, which allows the filter 7 to be installed inside the central vortex guide tube 1. When removing the filter 7, simply move the mounting frame 505 upward so that the mounting block 506 slides out of the slot 509 and into the annular groove 507. Then rotate the mounting frame 505 so that the mounting block 506 moves onto the sliding groove 508. At this time, the mounting block 506 can be slid out through the sliding groove 508, and the mounting frame 505 can be slid out of the central vortex guide tube 1. The mounting mechanism 5 can then be removed from the central vortex guide tube 1, and the filter 7 can be removed from the central vortex guide tube 1.

[0039] After the fan sends air into the central vortex guide tube 1, it drives the impeller 607 to rotate. The rotation of the impeller 607 drives the movable rod 610 and the fixed column 608 to rotate, which in turn drives the fixed sleeve 605 and the limiting tooth block 606 to rotate. Since the limiting tooth block 606 slides inside the limiting groove 604, it drives the sliding sleeve 603 to rotate, which in turn drives the mounting ring 601 and the cleaning brush 602 to rotate. Thus, the cleaning brush 602 can scrape off the impurities on the filter 7. Furthermore, since the spring 611 has elasticity, it can use its own reaction force to give the mounting ring 601 an upward force, which can then be transmitted to the cleaning brush 602, so that the cleaning brush 602 can be tightly attached to the bottom of the filter 7. At the same time, when the movable column 504 slides towards the direction of inserting the hollow column 501, it can drive the impeller 607 to move towards the direction of inserting the hollow column 501. At this time, the movable rod 610 will slide into the interior of the fixed column 608 to avoid the movement of the movable column 504 and the occurrence of motion interference.

[0040] When disassembling the bowl-shaped diffuser plate 3, the flip plate 806 is flipped downwards, which allows the rotating support 805 to change from a vertical to a horizontal state. Under the reaction force of the return spring 803, the limiting plate 802 and connecting rod 804 are pushed upwards, which in turn moves the top cylinder 807 upwards. At this point, the round handle 815 is pressed downwards, which in turn moves the pressing column 814 and sliding plate 809 downwards, thereby moving the abutment rod 810 downwards. This ensures that the abutment rod 810 does not abut against the inner top of the sliding plate 809. Meanwhile, the support foot 812 follows the top cylinder 807 downwards. As the support leg 812 moves upward, it is not blocked by the abutment 810 inside. Therefore, under the action of gravity, it will rotate towards the top cylinder 807, causing the support leg 812 to retract. At this time, the mounting column 801 and the support leg 812 can be pulled out from the hole at the bottom of the bowl-shaped diffuser plate 3 and the hole on the connecting flange 2. After pulling out multiple connecting mechanisms 8 in sequence, the bowl-shaped diffuser plate 3 can be removed from the top of the connecting flange 2. When installing the bowl-shaped diffuser plate 3, the rotating support 805 is placed horizontally. When inserting the mounting column 801 into the hole at the bottom of the connecting flange 2 and the bowl-shaped diffuser plate 3, the inner side of the support leg 812 and the abutment 810 will retract. All contact surfaces are inclined, allowing the push rod 810 to move downwards under pressure. This allows the inner wall of the hole to compress the support leg 812, causing it to rotate and retract towards the top cylinder 807. After the connecting mechanism 8 passes through the hole at the bottom of the bowl-shaped diffuser plate 3, the reaction force of the push spring 808 pushes the sliding plate 809 upwards, causing the push rod 810 to move upwards and opening the support leg 812. At this time, the limiting plate 813 also abuts against the outer wall of the top cylinder 807, preventing the support leg 812 from rotating. Furthermore, the limiting plate 813 prevents the support leg 812 from rotating under pressure. Rotating the rotating plate 806 upwards changes the rotating support 805 from a horizontal to a vertical position, pulling the connecting rod 804 and the limiting plate 802 downwards. This, in turn, moves the top cylinder 807 and the support foot 812 downwards, causing the support foot 812 to press firmly against the bottom and top of the bowl-shaped diffuser plate 3. The bottom of the connecting flange 2 is then held in place by the rotating support 805, allowing the connecting mechanism 8 to be installed between the connecting flange 2 and the bottom of the bowl-shaped diffuser plate 3. This allows the bowl-shaped diffuser plate 3 to be installed on the top of the upper connecting flange 2, thus completing the installation of the bowl-shaped diffuser plate 3.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A uniform cooling air guiding structure for a bell-type furnace, comprising a central swirling guide tube (1), characterized in that, The upper and lower ends of the central vortex guide tube (1) are fixedly connected with connecting flanges (2). The upper connecting flange (2) away from the central vortex guide tube (1) is provided with a bowl-shaped diffuser plate (3). The interior of the central vortex guide tube (1) is fixedly connected with spiral guide blades (4). The interior of the central vortex guide tube (1) is provided with an installation mechanism (5). The exterior of the installation mechanism (5) is provided with an automatic cleaning mechanism (6). The interior of the central vortex guide tube (1) is provided with a filter (7). The installation mechanism (5) is used to install the filter (7). The automatic cleaning mechanism (6) is used to clean the filter (7). The interior of the upper connecting flange (2) is provided with a connecting mechanism (8). The connecting mechanism (8) is used to install the upper connecting flange (2) and the bowl-shaped diffuser plate (3).

2. The bell-type furnace cooling air uniform flow guiding structure according to claim 1, characterized in that, The installation mechanism (5) includes a hollow insert column (501), a retaining spring (502) is provided inside the hollow insert column (501), a limiting plate (503) is slidably connected inside the hollow insert column (501), a movable column (504) is fixedly connected to one end of the limiting plate (503) away from the retaining spring (502), a mounting frame (505) is fixedly connected to one end of the movable column (504) away from the limiting plate (503), and a plurality of mounting blocks (506) are fixedly connected to the outside of the mounting frame (505). An annular groove (507) is opened at the bottom of the inner wall of the central vortex guide tube (1). The bottom of the inner wall of the hollow insert column (501) is... Multiple sliding grooves (508) are provided at the end of the filter (7). Multiple slots (509) are provided at the bottom of the inner wall of the central vortex guide tube (1). A plug-in hole groove (510) is provided in the middle of the filter (7). The top of the plug-in hollow column (501) is inserted into the inside of the plug-in hole groove (510). A hexagonal column (511) is fixedly connected to the top of the inside of the plug-in hole groove (510). A blocking ring (512) is fixedly connected to the inside of the central vortex guide tube (1) above the filter (7). A hexagonal groove (513) is provided at the top of the plug-in hollow column (501). The hexagonal column (511) is inserted into the inside of the hexagonal groove (513).

3. The bell-type furnace cooling air uniform flow guiding structure according to claim 2, characterized in that, The automatic cleaning mechanism (6) includes a mounting ring (601), the middle part of which is sleeved on the outside of the insert hollow column (501). Multiple cleaning brushes (602) are fixedly connected to the outside of the mounting ring (601). A sliding sleeve (603) is fixedly connected to the end of the mounting ring (601) away from the filter (7). Multiple limiting grooves (604) are provided on the outer wall of the sliding sleeve (603). A fixed sleeve (605) is slidably connected to the inner side of the sliding sleeve (603). Multiple limiting teeth (606) are fixedly connected to the top of the fixed sleeve (605). The limiting teeth (606) are slidably connected to the limiting teeth. Inside the groove (604), the fixed sleeve (605) is fixedly connected to the outside of the plug-in hollow column (501). An impeller (607) is fixedly connected to the outside of the movable column (504). Multiple fixed columns (608) are fixedly connected to the bottom end of the fixed sleeve (605). Multiple limiting blocks (609) are slidably connected inside the fixed column (608). A movable rod (610) is fixedly connected to the bottom of the limiting block (609). The bottom of the multiple movable rods (610) is fixedly connected to the top of the impeller (607). A clamping spring (611) is fixedly connected between the mounting ring (601) and the fixed sleeve (605).

4. The bell-type furnace cooling air uniform flow guiding structure according to claim 1, characterized in that, The connecting mechanism (8) includes multiple mounting posts (801), the exterior of which are respectively disposed in multiple holes inside the connecting flange (2). A limiting plate (802) is slidably connected inside each mounting post (801). A return spring (803) is provided inside each mounting post (801). A connecting rod (804) is fixedly connected to the bottom of the limiting plate (802). A rotating support (805) is rotatably connected to the bottom of the connecting rod (804). A flip plate (806) is fixedly connected to the exterior of the rotating support (805). A top cylinder (806) is fixedly connected to the top of the limiting plate (802). 07), a push spring (808) is provided inside the top cylinder (807), a sliding disc (809) is slidably connected inside the top cylinder (807), a plurality of abutment rods (810) are fixedly connected to the outside of the sliding disc (809), a plurality of sliding grooves (811) are opened on the outer wall of the top cylinder (807), the abutment rods (810) are slidably connected inside the sliding grooves (811), a plurality of support legs (812) are rotatably connected to the outside of the top cylinder (807), a limiting plate (813) is fixedly connected to the top of the support legs (812), and a pressing column (814) is fixedly connected to the top of the sliding disc (809).

5. The bell-type furnace cooling air uniform flow guiding structure according to claim 2, characterized in that, One end of the clamping spring (502) is fixedly connected to the inside of the insert hollow column (501), and the other end of the clamping spring (502) is fixedly connected to the top of the limiting plate (503).

6. The bell-type furnace cooling air uniform flow guiding structure according to claim 2, characterized in that, The inner wall of the insertable hollow column (501) is provided with multiple limiting sliding grooves (514), and multiple limiting slide bars (515) are fixedly connected to the outside of the limiting plate (503). The limiting slide bars (515) are slidably connected inside the limiting sliding grooves (514).

7. The bell-type furnace cooling air uniform flow guiding structure according to claim 2, characterized in that, The slot (509) and the slide groove (508) are staggered, and the interior of both the slot (509) and the slide groove (508) are connected to the annular groove (507).

8. The bell-type furnace cooling air uniform flow guiding structure according to claim 4, characterized in that, One end of the reset spring (803) is fixedly connected to the inside of the mounting post (801), and the other end of the reset spring (803) is fixedly connected to the bottom of the limiting plate (802).

9. The bell-type furnace cooling air uniform flow guiding structure according to claim 4, characterized in that, One end of the push spring (808) is fixedly connected to the inside of the top cylinder (807), and the other end of the push spring (808) is fixedly connected to the bottom of the sliding disk (809).

10. The bell-type furnace cooling air uniform flow guiding structure according to claim 4, characterized in that, The top of the pressing column (814) is fixedly connected to a round handle (815), the pressing column (814) passes through the top of the top cylinder (807), the outside of the top cylinder (807) is slidably connected to the top of the mounting column (801), and the connecting rod (804) passes through the bottom of the mounting column (801).

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