Reversing valve and blowback valve integrated disperse reversing device of heating furnace

Abstract

The invention relates to the technical field of CO emission of heating furnaces, and discloses a reversing valve and blowback valve integrated dispersed reversing device of a heating furnace, which comprises a heating furnace body and a reversing valve and blowback valve integrated dispersed reversing system, and the reversing valve and blowback valve integrated dispersed reversing system is mounted at the top end of the heating furnace body. The device comprises a heating furnace body, the back of the heating furnace body is provided with a filter box, the inner wall of the heating furnace body is provided with a partition plate, the top end of the filter box is provided with a rotating groove, and the rotating groove is internally and rotatably connected with a rotating disc. And the communicating pipe can be directly turned to the position above the activated carbon adsorption cotton on the other side, so that normal filtering and discharging of the air waste gas can be rapidly guaranteed, meanwhile, the activated carbon adsorption cotton on one side can be conveniently detached and replaced by a worker, the device does not need to be stopped, the working efficiency of the device is guaranteed, the structure is simple, and practicability is high.

Description

Technical Field

[0001] This invention belongs to the field of CO emission technology for heating furnaces, specifically, it relates to an integrated decentralized reversing device for a heating furnace reversing valve and a backflush valve. Background Technology

[0002] With increasing emphasis on the environment, air pollutant emissions have become a focus of attention. Due to its special process characteristics, regenerative rolling mill heating furnaces cannot completely burn and utilize the gas. During the combustion process, the gas between the reversing valve and the regenerative burner is directly discharged into the atmosphere, resulting in a large amount of CO in the flue gas. The direct emission of large amounts of CO into the atmosphere poses many hazards, causing environmental pollution and energy waste. According to Chinese Patent Publication No. CN222011663U, an integrated decentralized reversing device for a heating furnace reversing valve and a backflush valve is disclosed. It is equipped with a gas reversing valve seat, and the gas inlet valve is connected to the external gas delivery pipe to continuously deliver gas. The coal waste gas transfer pipe is connected to the backflush assembly to realize the internal recycling of coal waste gas and reduce the impact of gas waste. With the cooperation of the air reversing valve seat, it is easy to install the air inlet valve and the air waste gas outlet valve. The air inlet valve is connected to the air inlet pipe to continuously supplement air to the heating furnace body, which facilitates the full combustion of internal coal gas. However, in this technical solution, when the activated carbon adsorption cotton in the filter box needs to be disassembled and replaced, the device needs to be stopped, and then the old activated carbon adsorption cotton is removed and replaced with new activated carbon adsorption cotton. This results in poor flexibility in the use of the filter box and affects the working efficiency of the device. To address this, we propose an integrated decentralized reversing device that combines the reversing valve and backflush valve of the heating furnace. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: An integrated decentralized reversing device for a heating furnace reversing valve and backflush valve includes a heating furnace body and an integrated decentralized reversing system for the reversing valve and backflush valve. The integrated decentralized reversing system for the reversing valve and backflush valve is installed at the top of the heating furnace body. The back of a filter box is installed on the back of the heating furnace body. A partition is installed on the inner wall of the heating furnace body. A rotating groove is opened at the top of the filter box. A turntable is rotatably connected in the rotating groove. A connecting pipe is connected to the top of the turntable. The connecting pipe and the air exhaust pipe of the integrated decentralized reversing system for the reversing valve and backflush valve are connected through a rotary joint. A fixing component for fixing the turntable is provided at the top of the filter box. Activated carbon adsorption cotton is filled between the two sides of the partition and the inner wall of the filter box. A cover plate is installed on the front of the activated carbon adsorption cotton. A groove is opened on the back of the filter box. The cover plate is engaged in the groove. Limiting components for fixing the cover plate are provided at the top and bottom of the filter box near the back. Exhaust pipe one and exhaust pipe two are respectively connected to the two sides of the filter box near the bottom. Air inlet holes are opened at the bottom of the rotating groove near the two sides.

[0004] In a preferred embodiment of the present invention, a second sealing ring plate is installed on the outer wall of the turntable, and a second sealing ring groove is formed on the inner wall of the rotating groove. The second sealing ring plate and the second sealing ring groove are rotatably connected. By setting the second sealing ring plate, the sealing performance between the turntable and the rotating groove can be increased.

[0005] In a preferred embodiment of the present invention, a sealing ring plate is installed at the bottom of the turntable, and a sealing ring groove is formed at the bottom of the inner wall of the rotating groove. The sealing ring plate is rotatably connected to the sealing ring groove. By setting the sealing ring plate, the sealing performance between the turntable and the rotating groove can be further increased.

[0006] In a preferred embodiment of the present invention, sealing gaskets are installed on the inner walls of both the first sealing ring groove and the second sealing ring groove. By setting the sealing gaskets, the sealing performance between the first sealing ring plate and the first sealing ring groove and the second sealing ring plate and the second sealing ring groove can be increased respectively.

[0007] In a preferred embodiment of the present invention, the fixing component includes an L-shaped fixing plate and a pin. The L-shaped fixing plate is installed at the top of the filter box, and the pin moves through the top of the L-shaped fixing plate. A retaining ring is installed on the outer wall of the pin near the bottom end, and a spring surrounds the outer wall of the pin. The spring is installed between the bottom end of the retaining ring and the top end of the inner wall of the L-shaped fixing plate. A pin groove is opened at the top of the turntable, and the pin is inserted into the pin groove. By setting the pin, the pin can be inserted into the pin groove, thereby limiting and fixing the turntable.

[0008] In a preferred embodiment of the present invention, a pull ring is installed at the top of the pin, and the pin is adapted to the pin groove. By providing the pull ring, it is convenient for personnel to pull the pin, thereby facilitating personnel operation.

[0009] In a preferred embodiment of the present invention, the limiting component includes a fixed cylinder and a connecting shaft. The fixed cylinder is installed at the top of the filter box, the connecting shaft passes through the fixed cylinder, and a torsion spring is connected between the outer wall of the connecting shaft and the inner wall of the fixed cylinder. A clamping plate is installed at one end of the connecting shaft, and the clamping plate is engaged with the outside of the cover plate. A baffle is installed at the other end of the connecting shaft. By setting the clamping plate, the clamping plate can be engaged with the outside of the cover plate, thereby limiting the cover plate.

[0010] Compared with the prior art, the present invention has the following advantages: This invention features two activated carbon adsorption cottons installed in a filter box via a partition. When one activated carbon adsorption cotton needs to be replaced, the connecting pipe can be directly turned to the top of the other activated carbon adsorption cotton. This allows for quick and easy filtration and discharge of exhaust gases while facilitating the disassembly and replacement of the activated carbon adsorption cotton on one side without requiring the device to be shut down, thus ensuring the device's working efficiency. The invention is simple in structure and highly practical.

[0011] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0012] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional view of the back of the filter box of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram of section A in the middle; Figure 4 This is a schematic cross-sectional view of the filter box of the present invention. Figure 5 For the present invention Figure 4 Enlarged structural diagram of section B.

[0013] In the diagram: 1. Heating furnace body; 2. Integrated decentralized reversing system of reversing valve and backflush valve; 3. Connecting pipe; 4. Filter box; 5. Baffle plate; 6. Exhaust pipe one; 7. Exhaust pipe two; 8. Sealing gasket; 9. Sealing ring plate one; 10. Sealing ring groove one; 11. Air inlet; 12. L-shaped fixing plate; 13. Pin; 14. Spring; 15. Retaining ring; 16. Pin groove; 17. Pull ring; 18. Sealing ring plate two; 19. Sealing ring groove two; 20. Cover plate; 21. Activated carbon adsorption cotton; 22. Fixing cylinder; 23. Clamping plate; 24. Coupling shaft; 25. Baffle plate; 26. Torsion spring; 27. Rotary groove; 28. Turntable; 29. ​​Groove. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0015] like Figures 1 to 5 As shown, an integrated decentralized reversing device for a heating furnace reversing valve and backflush valve includes a heating furnace body 1 and an integrated decentralized reversing system 2 for the reversing valve and backflush valve. The integrated decentralized reversing system 2 is installed at the top of the heating furnace body 1. The back of a filter box 4 is installed on the back of the heating furnace body 1. A partition 5 is installed on the inner wall of the heating furnace body 1. A rotating groove 27 is opened at the top of the filter box 4. A turntable 28 is rotatably connected in the rotating groove 27. A connecting pipe 3 is connected to the top of the turntable 28. The connecting pipe 3 and the air exhaust of the integrated decentralized reversing system 2 for the reversing valve and backflush valve are connected. The discharge pipe is connected via a rotary joint. The top of the filter box 4 is equipped with a fixing component for fixing the turntable 28. Activated carbon adsorption cotton 21 is filled between the two sides of the partition 5 and the inner wall of the filter box 4. A cover plate 20 is installed on the front of the activated carbon adsorption cotton 21. A groove 29 is opened on the back of the filter box 4. The cover plate 20 is engaged in the groove 29. Limiting components for fixing the cover plate 20 are provided at the top and bottom of the filter box 4 near the back. Exhaust pipe 1 6 and exhaust pipe 2 7 are respectively connected to the two sides of the filter box 4 near the bottom. Air inlet holes 11 are opened at the bottom of the inner wall of the rotating groove 27 near the two sides.

[0016] Furthermore, a sealing ring plate 28 is installed on the outer wall of the turntable 28, and a sealing ring groove 29 is opened on the inner wall of the turntable 27. The sealing ring plate 28 and the sealing ring groove 29 are rotatably connected.

[0017] The sealing performance between the turntable 28 and the rotating groove 27 can be increased by setting a sealing ring plate 28.

[0018] Furthermore, a sealing ring plate 9 is installed at the bottom of the turntable 28, and a sealing ring groove 10 is opened at the bottom of the inner wall of the turntable 27. The sealing ring plate 9 and the sealing ring groove 10 are rotatably connected.

[0019] The sealing performance between the turntable 28 and the rotating groove 27 can be further increased by setting a sealing ring plate 9.

[0020] Furthermore, sealing gaskets 8 are installed on the inner walls of both sealing ring groove 10 and sealing ring groove 2 19.

[0021] By setting the sealing gasket 8, the sealing performance between the sealing ring plate 19 and the sealing ring groove 10 and the sealing ring plate 28 and the sealing ring groove 29 can be increased respectively.

[0022] Furthermore, the fixing assembly includes an L-shaped fixing plate 12 and a pin 13. The L-shaped fixing plate 12 is installed at the top of the filter box 4, and the pin 13 moves through the top of the L-shaped fixing plate 12. A retaining ring 15 is installed on the outer wall of the pin 13 near the bottom. A spring 14 surrounds the outer wall of the pin 13. The spring 14 is installed between the bottom of the retaining ring 15 and the top of the inner wall of the L-shaped fixing plate 12. A pin groove 16 is opened at the top of the turntable 28, and the pin 13 is inserted into the pin groove 16.

[0023] The turntable 28 can be fixed by setting a pin 13 so that it can be inserted into the pin groove 16.

[0024] Furthermore, a pull ring 17 is installed at the top of the pin 13, and the pin 13 is adapted to the pin groove 16.

[0025] The pull ring 17 is designed to facilitate personnel operation by allowing them to pull the pin 13.

[0026] Furthermore, the limiting assembly includes a fixed cylinder 22 and a connecting shaft 24. The fixed cylinder 22 is installed at the top of the filter box 4, the connecting shaft 24 passes through the fixed cylinder 22, and a torsion spring 26 is connected between the outer wall of the connecting shaft 24 and the inner wall of the fixed cylinder 22. A clamping plate 23 is installed at one end of the connecting shaft 24, and the clamping plate 23 is clamped to the outside of the cover plate 20. A baffle 25 is installed at the other end of the connecting shaft 24.

[0027] Specifically, by setting a locking plate 23, the locking plate 23 can be locked onto the outside of the cover plate 20, thereby limiting the position of the cover plate 20.

[0028] The implementation principle of an integrated decentralized reversing device for a heating furnace reversing valve and backflush valve is as follows: The integrated decentralized reversing system for the reversing valve and backflush valve includes a coal smoke reversing valve system equipped with a coal gas inlet valve, a coal gas exhaust valve, and a backflush inlet valve. The backflush inlet valve originates from the backflush system, which uses an intermediate gas drawn from the exhaust gas system as the backflush gas source. The air reversing valve system is equipped with an air inlet valve and an air exhaust valve, which draw out the exhaust gas through the air exhaust system. The heating furnace body system is equipped with corresponding air inlet valves in the air system and coal gas inlet valves in the coal gas system. After automatic and complete combustion through the air-coal ratio system, the exhaust gas is drawn out through the exhaust system. The above structures are all prior art in the patent with publication number CN222011663U, so they are not shown in detail in the accompanying drawings.

[0029] Specifically, the air inlet valve and the gas inlet valve are fully combusted under the action of the air-coal ratio system. When the gas inlet valve and the air inlet valve are closed, the air exhaust port is opened directly for discharge. When the gas inlet valve is closed, the backflush valve will immediately open to introduce intermediate gas to purge the residual CO in the common area between the reversing valve and the regenerator burner, and blow the CO into the heating furnace for secondary combustion. After the backflush valve is closed, the gas exhaust port valve is opened, and the exhaust gas is led out through the exhaust gas system. Exhaust air is conveyed to the filter box 4 through the connecting pipe 3, then filtered by the activated carbon adsorption cotton 21 on one side, and discharged through the exhaust pipe 6. When the activated carbon adsorption cotton 21 on one side becomes ineffective after long-term use and needs to be replaced, the pull ring 17 can be pulled upwards to move the pin 13 upwards, causing the pin 13 to move the retaining ring 15 to compress the spring 14, disengaging the pin 13 from its current position in the pin groove 16. Then, the connecting pipe 3 is rotated, causing the connecting pipe 3 to rotate the turntable 28, aligning the outlet of the connecting pipe 3 with the air inlet 11 at the top of the activated carbon adsorption cotton 21 to be used on the other side. Then, the pull ring 17 is released, and the retaining ring 15, under the restoring force of the spring 14, moves the pin 13 downwards, causing the pin 13 to re-insert into its current position in the pin groove 16, thus rotating the turntable 28. The filter box 4 is secured to ensure normal filtration and discharge of exhaust gas. Then, the retaining plate 23 on one side can be rotated to remove it from the outer side of the cover plate 20 of the activated carbon adsorption cotton 21. Pulling the cover plate 20 outwards allows the activated carbon adsorption cotton 21 to detach from the filter box 4, allowing new activated carbon adsorption cotton 21 to be inserted, thus completing the replacement. With this structure, two activated carbon adsorption cotton 21s are installed in the filter box 4 via a partition plate 5. When one activated carbon adsorption cotton 21 needs replacement, the connecting pipe 3 can be directly turned upwards towards the other activated carbon adsorption cotton 21. This ensures rapid and normal filtration and discharge of exhaust gas while facilitating easy disassembly and replacement of one activated carbon adsorption cotton 21 without requiring the device to be shut down, ensuring the device's working efficiency. The structure is simple and highly practical.

[0030] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated decentralized reversing device for a heating furnace reversing valve and a backflush valve, comprising a heating furnace body (1) and an integrated decentralized reversing system (2) for the reversing valve and the backflush valve, wherein the integrated decentralized reversing system (2) for the reversing valve and the backflush valve is installed at the top of the heating furnace body (1), characterized in that, The back of the filter box (4) is installed on the back of the heating furnace body (1). A partition (5) is installed on the inner wall of the heating furnace body (1). A rotating groove (27) is opened at the top of the filter box (4). A turntable (28) is rotatably connected in the rotating groove (27). A connecting pipe (3) is connected to the top of the turntable (28). The connecting pipe (3) and the air exhaust pipe of the integrated decentralized reversing system (2) of the reversing valve and backflush valve are connected through a rotary joint. A fixing component for fixing the turntable (28) is provided at the top of the filter box (4). The partition (5) Activated carbon adsorption cotton (21) is filled between the two sides and the inner wall of the filter box (4). A cover plate (20) is installed on the front of the activated carbon adsorption cotton (21). A groove (29) is opened on the back of the filter box (4). The cover plate (20) is engaged in the groove (29). A limiting component for fixing the cover plate (20) is provided at the top and bottom of the filter box (4) near the back. An exhaust pipe (6) and an exhaust pipe (7) are respectively connected to the two sides of the filter box (4) near the bottom. An air inlet (11) is opened at the bottom of the inner wall of the rotating groove (27) near the two sides.

2. The integrated decentralized reversing device for a heating furnace reversing valve and a backflush valve according to claim 1, characterized in that, The outer wall of the turntable (28) is equipped with a sealing ring plate two (18), and the inner wall of the turntable (27) is provided with a sealing ring groove two (19). The sealing ring plate two (18) and the sealing ring groove two (19) are rotatably connected.

3. The integrated decentralized reversing device for a heating furnace reversing valve and a backflush valve according to claim 1, characterized in that, The bottom of the turntable (28) is equipped with a sealing ring plate (9), and the bottom of the inner wall of the turntable (27) is provided with a sealing ring groove (10). The sealing ring plate (9) and the sealing ring groove (10) are rotatably connected.

4. The integrated decentralized reversing device for a heating furnace reversing valve and a backflush valve according to claim 3, characterized in that, Both the inner walls of the sealing ring groove one (10) and the sealing ring groove two (19) are equipped with sealing gaskets (8).

5. The integrated decentralized reversing device for a heating furnace reversing valve and a backflush valve according to claim 1, characterized in that, The fixing assembly includes an L-shaped fixing plate (12) and a pin (13). The L-shaped fixing plate (12) is installed on the top of the filter box (4). The pin (13) moves through the top of the L-shaped fixing plate (12). A retaining ring (15) is installed on the outer wall of the pin (13) near the bottom. A spring (14) surrounds the outer wall of the pin (13). The spring (14) is installed between the bottom of the retaining ring (15) and the top of the inner wall of the L-shaped fixing plate (12). A pin groove (16) is opened on the top of the turntable (28). The pin (13) is inserted into the pin groove (16).

6. The integrated decentralized reversing device for a heating furnace reversing valve and a backflush valve according to claim 5, characterized in that, A pull ring (17) is installed at the top of the pin (13), and the pin (13) is adapted to the pin groove (16).

7. The integrated decentralized reversing device for a heating furnace reversing valve and a backflush valve according to claim 1, characterized in that, The limiting component includes a fixed cylinder (22) and a connecting shaft (24). The fixed cylinder (22) is installed at the top of the filter box (4). The connecting shaft (24) passes through the fixed cylinder (22), and a torsion spring (26) is connected between the outer wall of the connecting shaft (24) and the inner wall of the fixed cylinder (22). A clamping plate (23) is installed at one end of the connecting shaft (24), and the clamping plate (23) is clamped to the outside of the cover plate (20). A baffle (25) is installed at the other end of the connecting shaft (24).

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