A cover plate turnover device for emergency relief port

Abstract

The application relates to a cover plate turnover device for an emergency release port and relates to the technical field of rotary hearth furnace flue gas treatment. In order to solve the problem that flue gas is not discharged in time due to slow cover plate action, the cover plate turnover device is arranged at the emergency release port, a cross beam is arranged above the cover plate, a connecting seat (one) is arranged at the top of the cover plate, a connecting seat (two) is arranged on the cross beam, the connecting seat (one) and the connecting seat (two) are hingedly arranged, a movable hinged assembly for supporting the cover plate is arranged at the bottom of the cross beam, and a cylinder for pushing is arranged at the end of the cross beam away from the cover plate. The application has the effect of realizing automatic opening and closing of the release port cover plate, rapidly responding under emergency working conditions, quickly opening or closing the cover plate, and greatly improving the practicality and reliability of the device.

Description

Technical Field

[0001] This application relates to the field of rotary hearth furnace flue gas treatment technology, and in particular to an emergency vent cover flipping device. Background Technology

[0002] In the rotary hearth furnace flue gas treatment system, the high-temperature flue gas discharged from the rotary hearth furnace first enters the settling chamber, and then the heat energy is recovered through the waste heat boiler. An emergency vent is provided at the top of the settling chamber, which is closed during normal system operation.

[0003] When the rotary hearth furnace system encounters an emergency, a rapid cutoff of the gas supply would cause a sharp drop in furnace temperature, severely damaging the refractory life of the furnace. Therefore, to protect the refractory material, it is necessary to maintain a slow, continuous emission of flue gas for approximately 4 hours, allowing the furnace body to gradually cool down until it is shut down. Only after this cooling process is complete can the emergency vent be closed. During normal production, the cover of the emergency vent not only acts as a seal, preventing unnecessary contact between external air and the furnace interior, but also prevents accidental spillage of materials, effectively ensuring the safe and stable operation of the entire system.

[0004] However, the existing emergency vent cover has shown a problem of slow action in actual use, resulting in untimely response to flue gas emissions. In addition, its operation process is complicated and difficult to operate manually. It not only consumes manpower, but may also delay the best time to deal with the situation due to improper operation. It is difficult to meet the needs of the rotary hearth furnace flue gas treatment system to respond efficiently to emergencies, so it needs to be improved. Utility Model Content

[0005] To address the problem of delayed flue gas emission caused by slow cover operation, this application provides a cover flipping device for emergency vents.

[0006] The emergency vent cover flipping device provided in this application adopts the following technical solution:

[0007] An emergency vent cover flipping device includes a cover plate arranged at the emergency vent, a crossbeam above the cover plate, a first connecting seat at the top of the cover plate, a second connecting seat on the crossbeam, the first connecting seat and the second connecting seat being hinged together, a movable hinge assembly for supporting the flipping cover being provided at the bottom of the crossbeam, and a cylinder for pushing being provided at the end of the crossbeam away from the cover plate.

[0008] By adopting the above technical solution, including a cover plate, a crossbeam is provided above the cover plate, a first connecting seat is welded and fixed to the cover plate, a second connecting seat is welded and fixed to the crossbeam, the first connecting seat and the second connecting seat are hinged together, a cylinder is installed at one end of the crossbeam, and a movable hinge assembly is installed at the bottom of the crossbeam.

[0009] When the rotary hearth furnace system encounters an emergency and needs to discharge flue gas through the emergency vent to protect the refractory material, the system issues a command to open the emergency vent cover. The cylinder starts working, the cylinder piston rod extends, and a thrust is generated. This thrust acts on the crossbeam, causing the crossbeam to be subjected to a torque that makes it rotate about a relevant fulcrum. The crossbeam begins to rotate under the thrust of the cylinder. Because the first connecting seat at the top of the cover and the second connecting seat on the crossbeam are hinged, the rotation of the crossbeam will drive the second connecting seat to move, which in turn drives the first connecting seat to move. The first connecting seat is fixedly connected to the cover. The movement of the first connecting seat causes the cover to start to flip. During this process, the movable hinge assembly at the bottom of the crossbeam plays a supporting and assisting role in flipping the cover, so that the cover can flip according to a predetermined trajectory and angle until the emergency vent is fully opened. At this time, the flue gas can be slowly discharged through the emergency vent, so as to gradually cool down the rotary hearth furnace body.

[0010] With the help of a crossbeam, a first connecting seat, a second connecting seat, a cylinder, and a movable hinge assembly, this device achieves automatic opening and closing of the vent cover by means of a cylinder drive. In emergency situations, it can respond quickly and open or close the cover rapidly, which not only greatly improves the practicality and reliability of the device, but also reduces the reliance on manual operation, thereby reducing labor costs and potential risks.

[0011] Optionally, a base frame is provided below the crossbeam, and the movable hinge assembly is arranged on the base frame.

[0012] By adopting the above technical solution, the movable hinge assembly is installed on the base frame; through the setting of the base frame, the base frame serves as a stable support foundation for the entire flipping structure, providing a reliable installation platform for the movable hinge assembly, enabling the movable hinge assembly to evenly distribute stress when subjected to force, greatly enhancing the overall stability of the device.

[0013] Optionally, the movable hinge assembly includes a first hinge seat and a second hinge seat, the first hinge seat being fixedly connected to the base frame, and the second hinge seat being fixedly connected to the bottom of the crossbeam, with the first hinge seat and the second hinge seat being hinged together.

[0014] By adopting the above technical solution, the movable hinge assembly includes a first hinge seat and a second hinge seat. Through the setting of the movable hinge assembly, during the cover plate flipping process, the hinge structure of the first hinge seat and the second hinge seat gives the movable hinge assembly flexible rotation capability. It can adaptively adjust the angle and force according to the movement of the crossbeam and the cover plate, effectively reducing jamming, offset and shaking during flipping, ensuring that the cover plate flips smoothly along the predetermined trajectory and angle, ensuring accurate opening and closing of the emergency vent, ensuring smooth and precise cover plate flipping action, strengthening structural stability, and effectively improving the ability of the rotary hearth furnace flue gas treatment system to cope with emergency situations.

[0015] Optionally, a pin for hinge is provided between the first connecting seat and the second connecting seat, and between the first hinge seat and the second hinge seat.

[0016] By adopting the above technical solution, pins are installed between the first connecting seat and the second connecting seat, and between the first hinge seat and the second hinge seat. With the setting of the pins, the pins, as key connecting and rotating components, have a simple structure and reliable performance. First, they give each connecting part flexible rotation capability, so that the first connecting seat and the second connecting seat, and the first hinge seat and the second hinge seat can achieve relative rotation, ensuring smooth motion transmission between the crossbeam and the cover plate, and between the crossbeam and the base frame.

[0017] Optionally, the base frame is provided with a locking assembly for locking the crossbeam. The locking assembly includes a first locking seat and a second locking seat. The first locking seat is fixedly connected to the base frame, and the second locking seat is fixedly connected to the crossbeam. The first locking seat and the second locking seat cooperate with each other.

[0018] By adopting the above technical solution, the locking assembly is installed on the base frame. The locking assembly includes a first locking seat and a second locking seat. With the setting of the locking assembly, when the device needs maintenance, the cover is in the open state, and the first locking seat and the second locking seat are fixed by a pin, which plays the role of limiting and locking, effectively preventing the cover from closing accidentally, ensuring the safety of equipment maintenance, and greatly improving the safety of the device during use.

[0019] Optionally, the crossbeam has an L-shaped cross section, and the crossbeam includes a horizontal section and an inclined extension section. The horizontal section of the crossbeam is hinged to a first connecting seat on the top of the cover plate via a second connecting seat. The first connecting seat is located at the center of the cover plate. The inclined extension section of the crossbeam is hinged to the piston end of the cylinder.

[0020] By adopting the above technical solution, the crossbeam has an L-shaped cross section, including a horizontal section and an inclined extension section, and the first connecting seat is arranged at the center of the cover plate. Through the setting of the crossbeam shape and the position of the first connecting seat, on the one hand, the first connecting seat is precisely arranged at the center of the cover plate, ensuring that the cover plate is subjected to uniform force during the lifting process, avoiding damage caused by uneven force, such as tilting, jamming, or local stress concentration, and ensuring the smoothness and reliability of the cover plate movement. On the other hand, the unique L-shaped design of the crossbeam is ingenious. The horizontal section is hinged to the first connecting seat at the center of the top of the cover plate through the second connecting seat. This design not only ensures the effective transmission of force between the crossbeam and the cover plate, but also provides stable support and guidance for the cover plate to flip, so that the cover plate can flip smoothly according to the predetermined trajectory.

[0021] Optionally, a counterweight is provided at the bottom of the inclined extension section of the crossbeam.

[0022] By adopting the above technical solution, the counterweight is installed on the crossbeam. With the counterweight, the counterweight generates a stable downward torque by its own weight, which directly acts on the crossbeam and drives the cover plate to overcome its own resistance such as friction and inertia to open automatically. This effectively distributes the driving force that originally needed to be output by the cylinder throughout the entire process, greatly reduces the work required by the cylinder during the opening stage, reduces the energy consumption of the cylinder, and ensures stable operation of the equipment under different working conditions.

[0023] Optionally, the cover plate is provided with a plurality of I-beams, which are arranged in a U-shape on the top of the cover plate.

[0024] By adopting the above technical solution, several I-beams are welded and fixed to the cover plate. Through the setting of the I-beams, the square-shaped layout cleverly achieves the balanced distribution of force. When subjected to external force, the force is evenly transmitted to all parts of the cover plate, avoiding stress concentration in a single area, preventing local deformation of the cover plate due to excessive force at a single point, ensuring that the cover plate always maintains a flat and regular shape, and improving the stability and durability of the device.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. Through the crossbeam, first connecting seat, second connecting seat, cylinder and movable hinge assembly, this device realizes the automatic opening and closing of the vent cover by means of cylinder drive. In emergency situations, it can respond quickly and open or close the cover quickly, which not only greatly improves the practicality and reliability of the device, but also reduces the reliance on manual operation, and reduces labor costs and potential risks.

[0027] 2. With the locking assembly in place, when the device needs maintenance, the cover is in the open position, and the first locking seat and the second locking seat are fixed by a pin, which plays a role in limiting and locking, effectively preventing the cover from closing accidentally, ensuring the safety of equipment maintenance, and greatly improving the safety of the device during use.

[0028] 3. By setting up counterweights, the counterweights generate a stable downward torque by their own weight, which directly acts on the crossbeam and drives the cover plate to overcome its own resistance such as friction and inertia to achieve automatic opening. This effectively distributes the driving force that originally needed to be output by the cylinder throughout the entire process, greatly reduces the work required by the cylinder during the opening stage, reduces the energy consumption of the cylinder, and ensures stable operation of the equipment under different working conditions. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of an emergency vent cover flipping device according to an embodiment of this application.

[0030] Figure 2 This is a top view used to illustrate the cover plate structure in the embodiments of this application.

[0031] Figure 3 This is a structural schematic diagram illustrating the installation relationship between the first connecting seat and the second connecting seat in the embodiments of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Cover plate; 11. First connecting seat; 2. Crossbeam; 21. Second connecting seat; 22. Second hinge seat; 23. Second locking seat; 3. Cylinder; 4. Counterweight; 5. Base frame; 51. First hinge seat; 52. First locking seat; 6. I-beam. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0034] This application discloses an emergency vent cover flipping device. (Refer to...) Figure 1 The emergency vent cover flipping device includes a cover plate 1, which in this embodiment covers the emergency vent.

[0035] Reference Figure 1 and Figure 2 The cover plate 1 has a circular cross-section, and several I-beams 6 are welded and fixed on the cover plate 1. Preferably, there are four I-beams 6, which are arranged in a U-shape on the top of the cover plate 1. The U-shape layout cleverly achieves the balanced distribution of force, and when subjected to external force, the force is evenly transmitted to all parts of the cover plate 1, avoiding stress concentration in a single area and preventing local deformation of the cover plate 1 due to excessive force at a single point. This ensures that the cover plate 1 always maintains a flat and regular shape, and improves the stability and durability of the device.

[0036] Reference Figure 1 and Figure 3 A base frame 5 is installed on one side of the cover plate 1, and a crossbeam 2 is provided above the cover plate 1. In this embodiment, the crossbeam 2 has an L-shaped cross section and includes a horizontal section and an inclined extension section. The horizontal section of the crossbeam 2 is arranged towards the cover plate 1. A second connecting seat 21 is welded and fixed on the horizontal section of the crossbeam 2. The second connecting seat 21 can also be fixed to the crossbeam 2 by bolts. A first connecting seat 11 is welded and fixed on the top of the cover plate 1. The first connecting seat 11 is arranged at the center of the cover plate 1. A pin for hinge is installed between the first connecting seat 11 and the second connecting seat 21.

[0037] Reference Figure 1A movable hinge assembly is installed on the base frame 5. In this embodiment, the movable hinge assembly is used to support the crossbeam 2 to realize the flipping action. The movable hinge assembly includes a first hinge seat 51 and a second hinge seat 22. The first hinge seat 51 is welded and fixed to the base frame 5, and the second hinge seat 22 is fixedly connected to the bottom of the crossbeam 2. In this embodiment, the second hinge seat 22 is located at the end of the horizontal section near the inclined extension section at the bottom of the crossbeam 2. At the same time, a pin is also fitted between the first hinge seat 51 and the second hinge seat 22. During the flipping process of the cover plate 1, the hinge structure of the first hinge seat 51 and the second hinge seat 22 gives the movable hinge assembly flexible rotation ability. It can adaptively adjust the angle and force according to the movement of the crossbeam 2 and the cover plate 1, effectively reducing the jamming, offset and shaking during flipping, ensuring that the cover plate 1 flips smoothly along the predetermined trajectory and angle, ensuring accurate opening and closing of the emergency vent, ensuring that the flipping action of the cover plate 1 is smooth and accurate, and strengthening the structural stability, which effectively improves the ability of the rotary hearth furnace flue gas treatment system to cope with emergency situations.

[0038] Reference Figure 1 A cylinder 3 is installed on the base frame 5. In this embodiment, the cylinder 3 is used to push the crossbeam 2 to open the cover plate 1. The piston end of the cylinder 3 is hinged to the inclined extension section of the crossbeam 2. A counterweight 4 is installed at the bottom of the inclined extension section of the crossbeam 2. The counterweight 4 does not affect the cover plate 1 when the emergency vent is blocked. The counterweight 4 generates a stable downward torque by its own weight, which directly acts on the crossbeam 2 and drives the cover plate 1 to overcome its own resistance such as friction and inertia to open automatically. This effectively distributes the driving force that the cylinder 3 originally needed to output throughout the process, greatly reduces the work required by the cylinder 3 in the opening stage, reduces the energy consumption of the cylinder 3, and ensures stable operation of the equipment under different working conditions.

[0039] Reference Figure 1 A locking assembly is also installed on the base frame 5. The locking assembly is used to lock the crossbeam 2 when the cover plate 1 is open. The locking assembly includes a first locking seat 52 and a second locking seat 23. The first locking seat 52 is welded and fixed to the base frame 5, and the second locking seat 23 is welded and fixed to the crossbeam 2. The first locking seat 52 and the second locking seat 23 cooperate with each other. In this embodiment, the first locking seat 52 and the second locking seat 23 are locked and fixed by means of a pin. This plays a role in limiting and locking, effectively preventing the cover plate 1 from closing accidentally, ensuring the safety of equipment maintenance, and greatly improving the safety of the device during use.

[0040] The implementation principle of the emergency vent cover flipping device in this application embodiment is as follows: When the rotary hearth furnace system encounters an emergency and needs to discharge flue gas through the emergency vent to protect the refractory material, the system issues a command to open the emergency vent cover 1. The cylinder 3 starts to work, the piston rod of the cylinder 3 extends, and a thrust is generated. This thrust acts on the crossbeam 2, so that the crossbeam 2 is subjected to a torque that causes it to rotate around the relevant fulcrum. The crossbeam 2 begins to rotate under the thrust of the cylinder 3. Because the first connecting seat 11 at the top of the cover 1 and the second connecting seat 21 on the crossbeam 2 are hinged, the rotation of the crossbeam 2 will drive the second connecting seat 21 to move, and then drive the first connecting seat 11 to move. The first connecting seat 11 is fixedly connected to the cover 1. The movement of the first connecting seat 11 causes the cover 1 to start to flip. During this process, the movable hinge component at the bottom of the crossbeam 2 plays a supporting and assisting role in flipping the cover, so that the cover 1 can flip according to a predetermined trajectory and angle until the emergency vent is fully opened. At this time, the flue gas can be slowly discharged through the emergency vent, so as to gradually cool down the rotary hearth furnace body.

[0041] With the crossbeam 2, first connecting seat 11, second connecting seat 21, cylinder 3 and movable hinge assembly, this device achieves automatic opening and closing of the vent cover 1 by means of cylinder 3. In emergency situations, it can respond quickly and open or close the cover 1 rapidly, which not only greatly improves the practicality and reliability of the device, but also reduces the reliance on manual operation, and reduces labor costs and potential risks.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An emergency vent cover flipping device, comprising a cover disposed at the emergency vent, characterized in that: A crossbeam is provided above the cover plate, a first connecting seat is provided on the top of the cover plate, a second connecting seat is provided on the crossbeam, the first connecting seat and the second connecting seat are hinged together, a movable hinge assembly for supporting the flip cover is provided at the bottom of the crossbeam, and a cylinder for pushing is provided at the end of the crossbeam away from the cover plate.

2. The emergency vent cover flipping device according to claim 1, characterized in that: A base frame is provided below the crossbeam, and the movable hinge assembly is arranged on the base frame.

3. The emergency vent cover flipping device according to claim 2, characterized in that: The movable hinge assembly includes a first hinge seat and a second hinge seat. The first hinge seat is fixedly connected to the base frame, and the second hinge seat is fixedly connected to the bottom of the crossbeam. The first hinge seat and the second hinge seat are hinged together.

4. The emergency vent cover flipping device according to claim 3, characterized in that: A hinge pin is provided between the first connecting seat and the second connecting seat, and between the first hinge seat and the second hinge seat for hinge connection.

5. The emergency vent cover flipping device according to claim 2, characterized in that: The base frame is provided with a locking assembly for locking the crossbeam. The locking assembly includes a first locking seat and a second locking seat. The first locking seat is fixedly connected to the base frame, and the second locking seat is fixedly connected to the crossbeam. The first locking seat and the second locking seat cooperate with each other.

6. The emergency vent cover flipping device according to claim 1, characterized in that: The crossbeam has an L-shaped cross section and includes a horizontal section and an inclined extension section. The horizontal section of the crossbeam is hinged to a first connecting seat on the top of the cover plate via a second connecting seat. The first connecting seat is located at the center of the cover plate. The inclined extension section of the crossbeam is hinged to the piston end of the cylinder.

7. The emergency vent cover flipping device according to claim 6, characterized in that: The bottom of the inclined extension section of the crossbeam is provided with a counterweight.

8. The emergency vent cover flipping device according to claim 1, characterized in that: The cover plate is provided with several I-beams, which are arranged in a square shape on the top of the cover plate.

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