Heat exchange rto oxidizer and method of use

Abstract

The present application relates to the technical fields of RTO oxidation furnace, and discloses a heat exchange type RTO oxidation furnace and a use method thereof, which comprises an RTO oxidation furnace body, a gas guide pipe, a valve mechanism and a steering mechanism, the RTO oxidation furnace body is connected with the gas guide pipe, and the valve mechanism comprises a supporting plate, a first transmission rod, a valve core and a linkage unit. The whole linkage of the valve mechanism is driven by the gas flow kinetic energy of the gas guide pipe, so that the valve core realizes high-frequency opening and closing, the traditional motor driving mode is completely abandoned, the motor wear, jam and power consumption problems are fundamentally eliminated, external power input is not needed, energy consumption is greatly reduced, there are no vulnerable parts such as motors and bearings, the failure rate is also greatly reduced, the frequency of shutdown maintenance and the cost of spare parts replacement are reduced, and through the setting of the steering mechanism, the narrow surface of the counterweight disc in the linkage unit is parallel to the gas flow when swinging to the farthest end, the resistance area is reduced, and stable reciprocating motion is realized in combination with gravity backswing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of RTO oxidation furnace, in particular to a heat exchange type RTO oxidation furnace and a use method thereof. BACKGROUND

[0002] The RTO oxidation furnace is a high-efficiency energy-saving and environmentally friendly equipment for treating medium and high concentration organic waste gas, which oxidizes and decomposes organic matters (VOCs) in the waste gas into carbon dioxide and water at high temperature, so as to achieve the purpose of purifying the waste gas and recovering the heat released during the decomposition of the waste gas. The main structure of the RTO oxidation furnace is composed of a combustion chamber, a heat storage chamber, a burner, a switching valve, a gas and combustion supporting system, a compressed air system, a control system and the like. Different heat recovery modes and switching valve modes can be selected according to the actual needs of the customers.

[0003] At present, in the high-frequency switching valve system of the oxidation furnace, the existing equipment generally adopts high-frequency opening and closing of the motor-driven valve to realize the dynamic balance and switching of the airflow in the furnace body. Although this design can effectively adjust the waste gas flow and pressure distribution, the motor-driven valve is prone to accelerated wear of the transmission parts due to frequent opening and closing during long-term operation, and even causes jamming or sealing failure, which directly affects the continuity of the system operation. Moreover, the motor-driven valve needs continuous power supply, and needs to be stopped for maintenance after failure, which significantly increases the operating cost of the enterprise. If the valve fails, it may cause waste gas leakage or pressure imbalance in the furnace, and in extreme cases, it may cause explosion accidents, which poses a great safety hazard. Therefore, the present application provides a heat exchange type RTO oxidation furnace and a use method thereof, which has a simple and ingenious structure and can fundamentally eliminate the problems of motor wear, jamming and power consumption. SUMMARY

[0004] The present application aims to solve the technical problems of the prior art, such as the large motor wear, the easy damage, the valve failure, the great safety hazard and the increased operating cost caused by the motor power consumption when the motor is used to drive the high-frequency switching valve in the oxidation furnace.

[0005] The object of the present application can be achieved by the following technical solutions:

[0006] A heat exchange type RTO oxidation furnace, comprising:

[0007] an RTO oxidation furnace body, a gas guide pipe connected to the RTO oxidation furnace body; and

[0008] A valve mechanism is provided to control the opening and closing of the internal cavity of the air duct. The valve mechanism includes a support plate, a first transmission rod, a valve core, and a linkage unit. One end of the L-shaped support plate is fixed to the outer wall of the air duct. The first transmission rod is rotatably connected to the other end of the support plate and passes through the air duct, and is rotatably connected to the center of the air duct. The valve core is fixed on the first transmission rod and is located inside the air duct. The linkage unit is disposed on the air duct and is partially connected to the first transmission rod. A steering mechanism for reducing wind resistance is provided in the linkage unit.

[0009] As a further embodiment of the present invention: the linkage unit includes a first driven plate, a linkage rod, a second transmission rod, and a second driven plate. One end of the first driven plate is fixed to the end of the first transmission rod located outside the air guide tube. The second transmission rod is rotatably connected to the air guide tube and is partially located inside the air guide tube. The second driven plate is fixed to the end of the second transmission rod located outside the air guide tube. One end of the linkage rod is rotatably connected to the second driven plate, and the other end is slidably connected to the first driven plate.

[0010] As a further embodiment of the present invention: the linkage unit further includes a synchronizing cylinder, a telescopic rod, and a counterweight plate. The synchronizing cylinder is coaxially fixed to one end of the second transmission rod located inside the air guide pipe. One end of the telescopic rod is rotatably connected to the synchronizing cylinder, and the counterweight plate is fixed to the other end of the telescopic rod.

[0011] As a further embodiment of the present invention: the steering mechanism includes a support rod, a drive bevel gear and a driven bevel gear. The support rod is fixed inside the air duct and is located on the same axis as the synchronizing cylinder. The drive bevel gear is coaxially fixed to one end of the support rod. The driven bevel gear is coaxially fixed to one end of the telescopic rod away from the counterweight plate and is located in the cavity inside the synchronizing cylinder. The driven bevel gear meshes with the drive bevel gear.

[0012] As a further aspect of the present invention: the telescopic rod is composed of two round rods, one of which is slidably engaged with the other, and a reset element is provided between the two.

[0013] As a further aspect of the present invention: a sliding groove is provided through the first driven plate, the sliding groove is strip-shaped, and one end of the linkage rod is slidably engaged in the sliding groove.

[0014] As a further aspect of the present invention: a chuck is coaxially fixed to one end of the linkage rod near the first driven plate, and the diameter of the chuck is greater than the width of the slide groove.

[0015] As a further aspect of the present invention: the valve core has a disc structure and a sealing rubber gasket is provided at the edge of the valve core.

[0016] As a further aspect of the present invention: a rectangular slot is provided at one end of the telescopic rod near the counterweight plate, the counterweight plate is snapped into the rectangular slot, and is detachably connected to the telescopic rod by screws.

[0017] A method of using a heat exchange RTO oxidation furnace, the method being applied to a heat exchange RTO oxidation furnace as described above, the method comprising the following steps:

[0018] Step S1: Pipe connection. Connect one end of the gas pipe to the RTO oxidation furnace body, and then connect the external gas pipe to the other end of the gas pipe.

[0019] Step S2, directional exhaust: exhaust gas is vented into the air pipe through the external air duct. During the exhaust process, the gas drives the counterweight plate to swing. At the same time, the first driven plate is synchronously linked with the second transmission rod and the second driven plate through the linkage rod, thereby driving the valve core to deflect in the air pipe, so that the cavity inside the air pipe is opened for air venting.

[0020] Step S3, Steering linkage: When the counterweight plate swings, the driven bevel gear meshes with the driving bevel gear, which in turn drives the counterweight plate to deflect through the support rod, causing the counterweight plate to turn.

[0021] Step S4: Reverse movement. When the counterweight plate swings to its farthest point, the narrow surface of the counterweight plate is parallel to the airflow direction. At this time, the airflow resistance is less than the weight of the counterweight plate. The counterweight plate swings in the reverse direction, which drives the valve core to move in the reverse direction to achieve sealing of the cavity inside the air guide tube.

[0022] The beneficial effects of this invention are:

[0023] (1) In this invention, the air kinetic energy of the air duct drives the valve mechanism to move together, so that the valve core can open and close at high frequency. This completely eliminates the traditional motor drive mode, fundamentally eliminating the problems of motor wear, jamming and power consumption. Moreover, no external power input is required, and the energy consumption is greatly reduced. At the same time, there are no easily damaged parts such as motors and bearings, and the failure rate is also greatly reduced, reducing the frequency of downtime maintenance and the cost of spare parts replacement.

[0024] (2) In this invention, the setting of the steering mechanism makes the narrow surface of the counterweight plate in the linkage unit parallel to the airflow when it swings to the farthest end, reducing the resistance area. Combined with gravity swing, it achieves stable reciprocating motion, reduces mechanical impact and fatigue loss. The high-frequency valve accurately controls the airflow switching time, reduces heat loss, maintains the furnace temperature, and improves heat recovery efficiency.

[0025] (3) In this invention, high-frequency switching is achieved by pure mechanical coupling without the intervention of electrical components, which completely avoids the risk of explosion caused by electric sparks. At the same time, the structure is compact and can be integrated into the existing RTO air intake pipeline. The modification cost is low and the service life is greatly extended. It is suitable for high-frequency and highly corrosive waste gas treatment scenarios such as chemical and pharmaceutical industries. Attached Figure Description

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the air duct structure in this invention;

[0029] Figure 3 This is a schematic diagram of the valve mechanism in this invention;

[0030] Figure 4 This is a schematic diagram of the structure of the first driven plate in this invention;

[0031] Figure 5 This is a schematic diagram of the steering mechanism in this invention;

[0032] Figure 6 This is a schematic diagram of the counterweight disc in this invention;

[0033] Figure 7 This is a schematic diagram of the cross-sectional structure of the telescopic rod in this invention.

[0034] In the diagram: 1. RTO oxidation furnace body; 2. Gas guide pipe; 3. Valve mechanism; 31. Support plate; 32. First transmission rod; 33. Valve core; 34. First driven plate; 35. Linkage rod; 36. Second transmission rod; 37. Second driven plate; 38. Synchronizing cylinder; 39. Telescopic rod; 310. Counterweight plate; 4. Steering mechanism; 41. Support rod; 42. Drive bevel gear; 43. Driven bevel gear; 5. Reset component; 6. Slide groove; 7. Chuck. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-7 As shown, the present invention is a heat exchange type RTO oxidation furnace, comprising:

[0037] RTO oxidation furnace body 1, wherein a gas guide pipe 2 is connected to the RTO oxidation furnace body 1; and

[0038] The valve mechanism 3 is used to control the opening and closing of the internal cavity of the air duct 2. The valve mechanism 3 includes a support plate 31, a first transmission rod 32, a valve core 33, and a linkage unit. One end of the L-shaped support plate 31 is fixed to the outer wall of the air duct 2. The first transmission rod 32 is rotatably connected to the other end of the support plate 31 and passes through the air duct 2 and is rotatably connected to the center of the air duct 2. The valve core 33 is fixed on the first transmission rod 32 and is located inside the air duct 2. The linkage unit is set on the air duct 2 and partially connected to the first transmission rod 32. A steering mechanism 4 for reducing wind resistance is set in the linkage unit.

[0039] In practical application, this embodiment utilizes the kinetic energy of the airflow in the air duct 2 to drive the valve mechanism 3 in a coordinated manner, enabling the valve core 33 to open and close at high frequency. This completely eliminates the traditional motor-driven mode, fundamentally eliminating motor wear, jamming, and energy consumption problems. Furthermore, it requires no external power input, significantly reducing energy consumption. With the elimination of easily damaged parts such as motors and bearings, the failure rate is also greatly reduced, decreasing the frequency of downtime maintenance and the cost of spare parts replacement. Through the setting of the steering mechanism 4, the narrow surface of the counterweight plate 310 in the linkage unit is parallel to the airflow when it swings to the farthest end, reducing the resistance area. Combined with gravity swing, it achieves stable reciprocating motion, reducing mechanical impact and fatigue wear. The high-frequency valve precisely controls the airflow switching time, reducing heat loss, maintaining a stable furnace temperature, and improving heat recovery efficiency.

[0040] like Figures 1-5 As shown, in a preferred embodiment of the present invention, the linkage unit includes a first driven plate 34, a linkage rod 35, a second transmission rod 36, and a second driven plate 37. One end of the first driven plate 34 is fixed to the end of the first transmission rod 32 located outside the air guide tube 2. The second transmission rod 36 is rotatably connected to the air guide tube 2 and is partially located inside the air guide tube 2. The second driven plate 37 is fixed to the end of the second transmission rod 36 located outside the air guide tube 2. One end of the linkage rod 35 is rotatably connected to the second driven plate 37, and the other end is slidably connected to the first driven plate 34.

[0041] In one embodiment, the linkage unit further includes a synchronization cylinder 38, a telescopic rod 39, and a counterweight plate 310. The synchronization cylinder 38 is coaxially fixed to one end of the second transmission rod 36 located inside the air guide pipe 2. One end of the telescopic rod 39 is rotatably connected to the synchronization cylinder 38, and the counterweight plate 310 is fixed to the other end of the telescopic rod 39.

[0042] In practical application, this embodiment utilizes the combination of counterweight plate 310 and telescopic rod 39 to form a pendulum structure. While the counterweight plate 310 swings back and forth, it can drive the second transmission rod 36 to rotate synchronously through the synchronous cylinder 38. Furthermore, by utilizing the linkage rod 35, the second driven plate 37 can drive the first driven plate 34 to move synchronously when it moves, thereby enabling the first transmission rod 32 to move synchronously with the second transmission rod 36.

[0043] like Figures 1-7 As shown, in a preferred embodiment of the present invention, the steering mechanism 4 includes a support rod 41, a drive bevel gear 42, and a driven bevel gear 43. The support rod 41 is fixed inside the air duct 2 and is located on the same axis as the synchronizing cylinder 38. The drive bevel gear 42 is coaxially fixed to one end of the support rod 41. The driven bevel gear 43 is coaxially fixed to one end of the telescopic rod 39 away from the counterweight plate 310 and is located in the cavity inside the synchronizing cylinder 38. The driven bevel gear 43 meshes with the drive bevel gear 42.

[0044] In practical applications, this embodiment utilizes the meshing and linkage between the driven bevel gear 43 and the driving bevel gear 42, thereby causing the driving bevel gear 42 to deflect while swinging, so that when it swings to the farthest end, the narrow surface is parallel to the airflow, reducing the resistance area. Combined with gravity swing, it achieves stable reciprocating motion, reducing mechanical impact and fatigue wear.

[0045] like Figure 6 As shown, in a preferred embodiment of the present invention, the telescopic rod 39 is composed of two round rods, one of which is slidably engaged with the other, and a reset member 5 is provided between the two.

[0046] In practical application, the reset component 5 enables the counterweight plate 310 to adapt to the airflow size and generate corresponding centrifugal force, thereby driving the telescopic rod 39 to extend and retract to the corresponding length, so that the counterweight plate 310 can obtain the corresponding oscillation period and realize the adaptive adjustment of the opening and closing time of the valve core 33.

[0047] like Figures 3-4 As shown, in a preferred embodiment of the present invention, a sliding groove 6 is provided through the first driven plate 34. The sliding groove 6 has a strip-shaped structure, and one end of the linkage rod 35 is slidably engaged in the sliding groove 6.

[0048] In one embodiment, a chuck 7 is coaxially fixed to one end of the linkage rod 35 near the first driven plate 34, and the diameter of the chuck 7 is greater than the width of the slide groove 6.

[0049] In practical application, the sliding groove 6 is used to allow one end of the linkage rod 35 to slide within the sliding groove 6 when it is linked with the second driven plate 37, thereby driving the first driven plate 34 to move synchronously. The chuck 7 is used to limit the linkage rod 35 to prevent it from separating from the first driven plate 34.

[0050] like Figures 3-4 As shown, in a preferred embodiment of the present invention, the valve core 33 has a disc structure and a sealing rubber gasket is provided at the edge of the valve core 33; the rubber gasket is used to improve the sealing performance of the valve core 33 when it abuts against the inner wall of the air guide tube 2.

[0051] like Figure 6 As shown, in a preferred embodiment of the present invention, a rectangular slot is provided at one end of the telescopic rod 39 near the counterweight plate 310. The counterweight plate 310 is snapped into the rectangular slot and is detachably connected to the telescopic rod 39 by screws. The detachable connection structure allows the counterweight plate 310 to be adjusted according to actual usage requirements.

[0052] Please see Figures 1-7 As shown, the present invention provides a method for using a heat exchange RTO oxidation furnace. The method is applied to a heat exchange RTO oxidation furnace as described in the above embodiment, and includes the following steps:

[0053] Step S1: Connect the pipes. Connect one end of the gas pipe 2 to the RTO oxidation furnace body 1, and then connect the external gas pipe to the other end of the gas pipe 2.

[0054] Step S2, directional exhaust: exhaust gas is vented into the air pipe 2 through an external air duct. During the exhaust process, the gas causes the counterweight plate 310 to swing. At the same time, the first driven plate 34 is synchronously linked with the second transmission rod 36 and the second driven plate 37 through the linkage rod 35, thereby driving the valve core 33 to deflect in the air pipe 2, so that the cavity inside the air pipe 2 is opened for air venting.

[0055] Step S3, Steering linkage: When the counterweight plate 310 swings, the driven bevel gear 43 meshes with the driving bevel gear 42, which in turn drives the counterweight plate 310 to deflect through the support rod 41, causing the counterweight plate 310 to turn.

[0056] Step S4: Reverse movement. When the counterweight plate 310 swings to its farthest point, the narrow surface of the counterweight plate 310 is parallel to the airflow direction. At this time, the airflow resistance is less than the weight of the counterweight plate 310. The counterweight plate 310 swings in the reverse direction, driving the valve core 33 to move in the reverse direction to achieve sealing of the internal cavity of the air guide pipe 2.

[0057] Working principle of the invention: The above embodiments of the invention provide a heat exchange RTO oxidation furnace and its usage method. During the intake, the exhaust gas flow drives the counterweight plate 310 to swing. During the swing, the telescopic rod 39 drives the synchronous cylinder 38 to rotate. At this time, the second transmission rod 36 rotates synchronously with the synchronous cylinder 38. The second transmission rod 36 drives the second driven plate 37 to deflect, and the first driven plate 34 is synchronously linked with the second transmission rod 36 and the second driven plate 37 through the linkage rod 35. This drives the valve core 33 to deflect in the gas guide pipe 2, opening the internal cavity of the gas guide pipe 2 for gas guiding. When the counterweight plate 310 swings, the driven bevel gear 43 meshes with the driving bevel gear 42. Then, the support rod 41 drives the counterweight plate 310 to deflect, causing the counterweight plate 310 to turn. When the counterweight plate 310 swings to its farthest end, its narrow surface is parallel to the airflow, reducing the resistance area. Combined with gravity swing, stable reciprocating motion is achieved. By adopting the above technical solution, the operation is guided by steps S1, S2, S3 and S4, and high-frequency switching is achieved through pure mechanical coupling without the intervention of electrical components, completely avoiding the risk of explosion caused by electric sparks. At the same time, the structure is compact and can be integrated into the existing RTO air intake pipeline, with low modification cost and significantly extended service life. It is suitable for high-frequency and highly corrosive waste gas treatment scenarios such as chemical and pharmaceutical industries.

[0058] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A heat exchange type RTO oxidation furnace, characterized in that, include: RTO oxidation furnace body (1), on which a gas guide pipe (2) is connected; Valve mechanism (3) is used to control the opening and closing of the cavity inside the air pipe (2). The valve mechanism (3) includes a support plate (31), a first transmission rod (32), a valve core (33) and a linkage unit. One end of the L-shaped support plate (31) is fixed on the outer wall of the air pipe (2). The first transmission rod (32) is rotatably connected to the other end of the support plate (31). The first transmission rod (32) passes through the air pipe (2) and is rotatably connected to the center of the air pipe (2). The valve core (33) is fixed on the first transmission rod (32) and is located inside the air pipe (2). The linkage unit is installed on the air duct (2) and partially connected to the first transmission rod (32), and a steering mechanism (4) for reducing wind resistance is provided in the linkage unit for steering. The linkage unit includes a first driven plate (34), a linkage rod (35), a second transmission rod (36), and a second driven plate (37). One end of the first driven plate (34) is fixed to the first transmission rod (32) at the end located outside the air guide tube (2). The second transmission rod (36) is rotatably connected to the air guide tube (2) and is partially located inside the air guide tube (2). The second driven plate (37) is fixed to the second transmission rod (36) at the end located outside the air guide tube (2). One end of the linkage rod (35) is rotatably connected to the second driven plate (37), and the other end is slidably connected to the first driven plate (34). The linkage unit also includes a synchronization cylinder (38), a telescopic rod (39), and a counterweight plate (310). The synchronization cylinder (38) is coaxially fixed on the second transmission rod (36) at one end located inside the air guide pipe (2). One end of the telescopic rod (39) is rotatably connected to the synchronization cylinder (38), and the counterweight plate (310) is fixed to the other end of the telescopic rod (39). The steering mechanism (4) includes a support rod (41), a drive bevel gear (42), and a driven bevel gear (43). The support rod (41) is fixed inside the air duct (2) and is located on the same axis as the synchronizing cylinder (38). The drive bevel gear (42) is coaxially fixed at one end of the support rod (41). The driven bevel gear (43) is coaxially fixed at one end of the telescopic rod (39) away from the counterweight plate (310) and is located in the cavity inside the synchronizing cylinder (38). The driven bevel gear (43) meshes with the drive bevel gear (42).

2. The heat exchange type RTO oxidation furnace according to claim 1, characterized in that, The telescopic rod (39) is composed of two round rods, one of which is slidably engaged with the other, and a reset member (5) is provided between the two.

3. The heat exchange type RTO oxidation furnace according to claim 1, characterized in that, A sliding groove (6) is provided through the first driven plate (34). The sliding groove (6) has a strip-shaped structure, and one end of the linkage rod (35) is slidably engaged in the sliding groove (6).

4. The heat exchange type RTO oxidation furnace according to claim 3, characterized in that, A chuck (7) is coaxially fixed at one end of the linkage rod (35) near the first driven plate (34), and the diameter of the chuck (7) is greater than the width of the slide groove (6).

5. The heat exchange type RTO oxidation furnace according to claim 1, characterized in that, The valve core (33) has a disc structure and a sealing rubber gasket is provided at the edge of the valve core (33).

6. The heat exchange type RTO oxidation furnace according to claim 1, characterized in that, A rectangular slot is provided at one end of the telescopic rod (39) near the counterweight plate (310). The counterweight plate (310) is snapped into the rectangular slot and is detachably connected to the telescopic rod (39) by screws.

7. A method of use, applied to a heat exchange RTO oxidation furnace according to any one of claims 1-6, characterized in that, Includes the following steps: S1. Connect the pipes: Connect one end of the gas pipe (2) to the RTO oxidation furnace body (1), and then connect the external gas pipe to the other end of the gas pipe (2). S2, Directional exhaust: Exhaust gas is discharged into the air pipe (2) through an external air pipe. During the exhaust process, the gas drives the counterweight plate (310) to swing. At the same time, the first driven plate (34) is synchronously linked with the second transmission rod (36) and the second driven plate (37) through the linkage rod (35), thereby driving the valve core (33) to deflect in the air pipe (2), so that the cavity inside the air pipe (2) is opened for air ducting operation. S3, Steering linkage: When the counterweight plate (310) swings, the driven bevel gear (43) meshes with the driving bevel gear (42), and then drives the counterweight plate (310) to deflect through the support rod (41), so that the counterweight plate (310) turns. S4. Reverse movement: When the counterweight plate (310) swings to the farthest end, the narrow surface of the counterweight plate (310) is parallel to the airflow direction. At this time, the airflow resistance is less than the weight of the counterweight plate (310). The counterweight plate (310) swings in the opposite direction, driving the valve core (33) to move in the opposite direction to achieve sealing of the internal cavity of the air guide pipe (2).

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