RTO catalytic oxidation furnace poppet valve

Abstract

The utility model discloses a kind of RTO catalytic oxidation furnace poppet valve, it is related to industrial waste gas treatment equipment technical field, including external installation component, external installation component includes valve outer plate, valve outer plate top surface is fixedly installed with mounting bracket, mounting bracket top surface is fixedly installed with cylinder body, the telescopic rod of cylinder body is fixedly installed with adjusting assembly after passing through mounting bracket, valve outer plate bottom surface is fixedly installed with internal installation component, adjusting assembly bottom end is fixedly installed with valve leaf assembly after passing through internal installation component, the utility model is provided with liquid sodium thermal expansion drive mechanism and corrugated sleeve thermal compensation structure, under high temperature condition, liquid sodium is heated and expands drive piston plate automatic displacement, and then the dynamic shortening of adjusting assembly length is realized, effectively neutralize the dimensional error caused by upper rod and lower rod thermal expansion, significantly improve the working accuracy and reliability of device under high temperature environment.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial waste gas treatment equipment, specifically to a riser valve for an RTO catalytic oxidation furnace. Background Technology

[0002] Currently, RTO catalytic oxidation furnaces, as a highly efficient environmental protection equipment for treating organic waste gas, are widely used in industries such as chemical, pharmaceutical, and coating. This type of equipment decomposes harmful organic components in waste gas through high-temperature oxidation, achieving compliant emissions. To control the flow and switching of waste gas within the system, multiple lifting valves are installed at the furnace inlet and outlet to directionally control the flow path of waste gas or hot gas. The lifting valves are usually driven by cylinders, which drive the valve plate to rise and fall through linear reciprocating motion, completing the on / off control within the furnace. The response speed and sealing performance of the valves directly affect the thermal efficiency and treatment effect of the RTO system.

[0003] However, in actual operation, because the RTO furnace is in a high-temperature environment of 600℃ to 850℃ for a long time, the structural components of the lifting valve installed in the high-temperature gas channel (such as connecting rods, guide shafts, valve plates, etc.) are prone to thermal expansion and contraction. In particular, the transmission rod between the cylinder and the valve plate expands significantly under high temperature. If there is no compensation mechanism in the structure, it can easily cause problems such as misalignment of the valve plate, insufficient valve opening stroke or incomplete closing, affecting the system switching accuracy and even causing high-temperature gas leakage, which poses a serious safety hazard. In existing technologies, some structures enhance thermal stability by thickening the guide mechanism or using high-temperature resistant materials. However, these technologies generally fail to address the issue of structural length changes caused by the thermal expansion of the rods. Especially after the cylinder stops working, the valve plate and valve seat cannot maintain effective contact, easily forming gaps and causing gas leakage. Furthermore, traditional lift valves generally lack temperature adaptive adjustment mechanisms, making it impossible to dynamically adjust the transmission length according to changes in ambient temperature. After long-term operation, they are more prone to sealing aging, jamming, and other phenomena, resulting in frequent maintenance and high operating costs. Therefore, there is an urgent need to provide a lift valve structure for RTO catalytic oxidation furnaces that has high-temperature thermal compensation capabilities, reliable sealing, and sensitive response to solve the above-mentioned problems in existing technologies and meet the requirements for precise motion control and long-term sealing under high-temperature conditions. Utility Model Content

[0004] The purpose of this invention is to provide a booster valve for an RTO catalytic oxidation furnace to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An RTO catalytic oxidation furnace booster valve includes an external mounting assembly, which includes a valve outer plate. A mounting bracket is fixedly mounted on the top surface of the valve outer plate, and a cylinder body is fixedly mounted on the top surface of the mounting bracket. An adjustment assembly is coaxially fixedly mounted on the telescopic rod of the cylinder body after passing through the mounting bracket. An internal mounting assembly is fixedly mounted on the bottom surface of the valve outer plate, and a valve leaf assembly is coaxially fixedly mounted on the bottom end of the adjustment assembly after passing through the internal mounting assembly.

[0006] Furthermore, a fixing cylinder is fixedly installed at the center of the top surface of the valve outer plate, and a first bushing is coaxially fixedly installed on the inner wall of the fixing cylinder.

[0007] Furthermore, the adjustment assembly includes an upper rod, which is coaxially and fixedly connected to the bottom end of the telescopic rod of the cylinder body, and the upper rod is slidably inserted into the inner wall of the first bushing.

[0008] Furthermore, a piston plate is coaxially fixedly installed at the bottom end of the upper rod, and a heat insulation cylinder is slidably sleeved on the outer wall of the piston plate.

[0009] Furthermore, a corrugated sleeve is sandwiched between the top surface of the heat insulation cylinder and the top surface of the piston plate, and a spring is sandwiched between the bottom surface of the heat insulation cylinder and the bottom surface of the piston plate.

[0010] Furthermore, a lower rod is coaxially fixedly installed on the bottom surface of the heat insulation cylinder. A storage cavity is opened inside the lower rod, and a liquid guide pipe is fixedly installed on the outer wall of the lower rod. The end of the liquid guide pipe away from the lower rod passes through the side wall of the heat insulation cylinder and is connected to the corrugated sleeve.

[0011] Furthermore, the internal mounting components include a valve leaf flange, with several support rods fixedly mounted on the outer wall of the valve leaf flange. The ends of the support rods away from the valve leaf flange are fixedly connected to the bottom surface of the valve outer plate. An mounting cylinder is fixedly mounted at the center of the valve leaf flange, and a second bushing is coaxially fixedly mounted on the inner wall of the mounting cylinder. The lower rod is slidably inserted into the inner wall of the second bushing.

[0012] Furthermore, the valve vane assembly includes a valve vane body, the outer wall size of which is adapted to the inner wall size of the valve vane flange, and the bottom end of the lower rod passes through the second bushing and is coaxially and fixedly connected to the valve vane body.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. When in use, this utility model uses the cylinder body to drive the adjustment component and valve blade component to move up and down, thereby achieving precise control of the valve blade body. Combined with the axial guiding constraints provided by the first and second bushings, it ensures the stability of the structure operation and the smoothness of the action process. 2. When this utility model is in use, by setting up a liquid sodium thermal expansion drive mechanism and a corrugated sleeve thermal compensation structure, under high temperature conditions, the liquid sodium expands under heat and drives the piston plate to automatically move, thereby realizing the dynamic shortening of the length of the adjustment component, effectively neutralizing the dimensional error caused by the thermal expansion of the upper rod and the lower rod, and significantly improving the working accuracy and reliability of the device in high temperature environment. 3. When in use, this utility model uses a stainless steel and alumina ceramic composite structure to manufacture the heat insulation cylinder, which combines structural strength and excellent heat insulation performance. When the system cools down, the spring can quickly return the liquid sodium to the storage chamber and automatically restore the initial length of the adjustment component. This ensures that the valve body can still fit tightly with the valve flange in the non-drive state, preventing gas leakage and thus improving the sealing and safety of the system. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a riser valve for an RTO catalytic oxidation furnace; Figure 2 An exploded view of the overall structure of a riser valve for an RTO catalytic oxidation furnace; Figure 3 An exploded view of the external mounting assembly structure of a riser valve for an RTO catalytic oxidation furnace; Figure 4 An exploded view of the regulating component structure of a riser valve in an RTO catalytic oxidation furnace; Figure 5 An exploded view of the internal mounting assembly structure of a riser valve for an RTO catalytic oxidation furnace; Figure 6 An exploded view of the valve blade assembly structure of a riser valve for an RTO catalytic oxidation furnace; Figure 7 This is a cross-sectional view of the overall structure of a riser valve for an RTO catalytic oxidation furnace; Figure 8 for Figure 7 Enlarged view of the structure at point A.

[0015] In the picture: 1. External mounting components; 11. Valve outer plate; 111. Mounting bracket; 112. Fixing sleeve; 12. First bushing; 2. Cylinder body; 3. Adjusting assembly; 31. Upper rod; 311. Piston plate; 32. First coupling; 33. Heat insulation cylinder; 34. Corrugated sleeve; 35. Spring; 36. Lower rod; 361. Mounting plate; 37. Liquid guide tube; 4. Internal mounting components; 41. Valve leaf flange; 411. Mounting sleeve; 42. Support rod; 43. Second shaft sleeve; 5. Valve vane assembly; 51. Valve vane body; 511. Connecting plate; 52. Second coupling. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example 1: Please refer to Figures 1-3 An RTO catalytic oxidation furnace booster valve includes an external mounting assembly 1, which includes a valve outer plate 11. A mounting bracket 111 is fixedly mounted on the top surface of the valve outer plate 11, and a cylinder body 2 is fixedly mounted on the top surface of the mounting bracket 111. Specifically, the mounting bracket 111 is welded and fixed to the center of the top surface of the valve outer plate 11, and the cylinder body 2 is fixedly mounted on the top surface of the mounting bracket 111 by bolts. The telescopic rod of the cylinder body 2 passes through the mounting bracket 111 and is coaxially fixedly mounted with an adjusting assembly 3. An internal mounting assembly 4 is fixedly mounted on the bottom surface of the valve outer plate 11, and the bottom end of the adjusting assembly 3 passes through the internal mounting assembly 4 and is coaxially fixedly mounted with a valve leaf assembly 5.

[0018] A fixing cylinder 112 is fixedly installed at the center of the top surface of the valve outer plate 11. A first bushing 12 is coaxially fixedly installed on the inner wall of the fixing cylinder 112. Specifically, a number of reinforcing ribs are welded at equal intervals around the top surface of the valve outer plate 11 to strengthen the plate and prevent the valve outer plate 11 from deforming.

[0019] Example 2: Please refer to Figures 2-8An RTO catalytic oxidation furnace booster valve differs from Embodiment 1 in that the adjusting component 3 includes an upper rod 31, which is coaxially and fixedly connected to the bottom end of the telescopic rod of the cylinder body 2. The upper rod 31 is slidably inserted into the inner wall of the first bushing 12. Specifically, a first coupling 32 is coaxially and fixedly installed at the top end of the upper rod 31. The end of the first coupling 32 away from the upper rod 31 is coaxially and fixedly connected to the bottom end of the telescopic rod of the cylinder body 2. A piston plate 311 is coaxially and fixedly installed at the bottom end of the upper rod 31. A heat insulation cylinder 33 is slidably fitted onto the wall. Specifically, the outer wall of the heat insulation cylinder 33 is made of stainless steel, and the inner wall of the heat insulation cylinder 33 is inlaid with alumina ceramic. Alumina ceramic has high strength and good heat insulation. A corrugated sleeve 34 is sandwiched between the inner top surface of the heat insulation cylinder 33 and the top surface of the piston plate 311, and a spring 35 is sandwiched between the inner bottom surface of the heat insulation cylinder 33 and the bottom surface of the piston plate 311. Specifically, the inner wall size of the heat insulation cylinder 33 is adapted to the outer wall size of the piston plate 311, and lubricating oil is applied between the outer wall of the piston plate 311 and the inner wall of the heat insulation cylinder 33. The piston plate 311 has a resetting function. A lower rod 36 is coaxially fixedly installed on the bottom surface of the heat insulation cylinder 33. A storage cavity is opened inside the lower rod 36. A liquid guide tube 37 is fixedly installed on the outer wall of the lower rod 36. The end of the liquid guide tube 37 away from the lower rod 36 passes through the side wall of the heat insulation cylinder 33 and connects to the corrugated sleeve 34. Specifically, an mounting plate 361 is coaxially fixedly installed on the top surface of the lower rod 36. The mounting plate 361 is coaxially fixedly connected to the bottom surface of the heat insulation cylinder 33 by bolts. The storage cavity inside the lower rod 36 is filled with liquid sodium. The sodium can be stably liquid at a working temperature of 800℃ and expand significantly. A connection hole is opened on the top surface of the corrugated sleeve 34. The end of the liquid guide tube 37 away from the lower rod 36 passes through the connection hole and connects to the corrugated sleeve 34. The expanded liquid sodium can enter the interior of the corrugated sleeve 34 through the liquid guide tube 37. The expansion of the corrugated sleeve 34 pushes the piston plate 311 of the upper rod 31 to move downward inside the heat insulation cylinder 33, thereby shortening the overall length of the adjustment assembly 3, thus neutralizing the error of rod elongation between the upper rod 31 and the lower rod 36 under high temperature operation.

[0020] Internal mounting assembly 4 includes a valve leaf flange 41. Several support rods 42 are fixedly mounted on the outer wall of the valve leaf flange 41. The ends of the support rods 42 away from the valve leaf flange 41 are fixedly connected to the bottom surface of the valve outer plate 11. An mounting cylinder 411 is fixedly mounted at the center of the valve leaf flange 41. A second bushing 43 is coaxially fixedly mounted on the inner wall of the mounting cylinder 411. A lower rod 36 is slidably inserted into the inner wall of the second bushing 43. Valve leaf assembly 5 includes a valve leaf body 51. The outer wall size of the valve leaf body 51 is adapted to the inner wall size of the valve leaf flange 41. The bottom end of the lower rod 36 passes through the second bushing 43 and is coaxially fixedly connected to the valve leaf body 51. Specifically, a connecting plate 511 is provided at the center of the top surface of the valve leaf body 51. A second coupling 52 is fixedly mounted on the top surface of the connecting plate 511 by bolts. The end of the second coupling 52 away from the valve leaf body 51 is connected to the lower rod. The bottom end of rod 36 is coaxially fixed. When hot air is passed through the pipe, the liquid sodium inside the lower rod 36 expands due to heat. The expanded liquid sodium can enter the corrugated sleeve 34 through the liquid guide pipe 37. The expansion of the corrugated sleeve 34 pushes the piston plate 311 of the upper rod 31 to move downward inside the heat insulation cylinder 33, and the spring 35 is compressed, thereby shortening the overall length of the adjustment component 3. This neutralizes the error in rod lengthening between the upper rod 31 and the lower rod 36 under high temperature operation. When hot air is passed through the pipe, the liquid sodium inside the lower rod 36 contracts due to cold. The spring 35 releases its elasticity, allowing the liquid sodium inside the corrugated sleeve 34 to be transported back to the storage chamber inside the lower rod 36 through the liquid guide pipe 37. The spring 35 pushes the piston plate 311 of the upper rod 31 to move upward inside the heat insulation cylinder 33, thereby extending the overall length of the adjustment component 3 and restoring it to its initial length.

[0021] Working principle: During the use of this device, the cylinder body 2 controls the extension and retraction of the telescopic rod, which drives the adjustment component 3 and valve leaf component 5, which are fixed coaxially with it, to move up and down. The adjustment component 3 consists of an upper rod 31 and a lower rod 36. The upper rod 31 is coaxially connected to the telescopic rod of the cylinder body 2 and passes through the first bushing 12. The first bushing 12 ensures that the upper rod 31 is stably guided. A piston plate 311 is fixedly installed at the bottom of the upper rod 31. The outer wall of the piston plate 311 is slidably sleeved inside the heat insulation cylinder 33. The heat insulation cylinder 33 adopts a stainless steel shell and an inlaid alumina ceramic structure. A corrugated sleeve 34 is sandwiched between the inner top surface of the heat insulation cylinder 33 and the top surface of the piston plate 311. A spring 35 is sandwiched between the inner bottom surface of the heat insulation cylinder 33 and the bottom surface of the piston plate 311. The spring 35 is used to realize the automatic extension and retraction adjustment and reset function. The lower rod 36 is fixed at the bottom of the heat insulation cylinder 33. A storage cavity for storing liquid sodium is opened inside the lower rod 36. Liquid sodium will expand in volume under high temperature conditions. When hot gas is introduced into the pipeline system, the liquid sodium expands due to heat and enters the corrugated sleeve 34 through the liquid guide pipe 37, pushing the corrugated sleeve 34 to expand and driving the piston plate 311 to move downward, thereby shortening the total length of the adjustment component 3 and effectively compensating for the dimensional error caused by the thermal expansion of the upper rod 31 and the lower rod 36. When the piping system cools down, the liquid sodium contracts upon cooling, and the spring 35 releases its elastic force to push the bellows 34 back. The liquid sodium flows back to the storage chamber of the lower rod 36 through the liquid guide pipe 37. At the same time, the spring 35 pushes the piston plate 311 to move upward inside the heat insulation cylinder 33, and the adjusting component 3 returns to its initial length. The bottom end of the adjusting component 3 is coaxially connected to the valve vane assembly 5. The valve vane assembly 5 achieves precise lifting and lowering of the valve vane body 51 in the lifting valve chamber through the insertion and cooperation of the lower rod 36 and the second coupling 52, ensuring that when the cylinder body 2 stops working, the valve vane body 51 is always tightly connected to the valve vane flange 41 to avoid gas leakage. At this point, the operation of this device is completed.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A booster valve for an RTO catalytic oxidation furnace, comprising an external mounting assembly (1), characterized in that: The external mounting assembly (1) includes a valve outer plate (11), a mounting bracket (111) is fixedly mounted on the top surface of the valve outer plate (11), a cylinder body (2) is fixedly mounted on the top surface of the mounting bracket (111), an adjustment assembly (3) is coaxially fixedly mounted on the telescopic rod of the cylinder body (2) after passing through the mounting bracket (111), an internal mounting assembly (4) is fixedly mounted on the bottom surface of the valve outer plate (11), and a valve leaf assembly (5) is coaxially fixedly mounted on the bottom end of the adjustment assembly (3) after passing through the internal mounting assembly (4).

2. The RTO catalytic oxidation furnace riser valve according to claim 1, characterized in that: A fixing cylinder (112) is fixedly installed at the center of the top surface of the valve outer plate (11), and a first bushing (12) is coaxially fixedly installed on the inner wall of the fixing cylinder (112).

3. The RTO catalytic oxidation furnace lifting valve according to claim 1, characterized in that: The adjustment assembly (3) includes an upper rod (31), which is coaxially and fixedly connected to the bottom end of the telescopic rod of the cylinder body (2), and the upper rod (31) is slidably inserted into the inner wall of the first bushing (12).

4. The RTO catalytic oxidation furnace riser valve according to claim 3, characterized in that: A piston plate (311) is coaxially fixedly installed at the bottom end of the upper rod (31), and a heat insulation cylinder (33) is slidably sleeved on the outer wall of the piston plate (311).

5. The RTO catalytic oxidation furnace lifting valve according to claim 4, characterized in that: A corrugated sleeve (34) is sandwiched between the top surface of the heat insulation cylinder (33) and the top surface of the piston plate (311), and a spring (35) is sandwiched between the bottom surface of the heat insulation cylinder (33) and the bottom surface of the piston plate (311).

6. The RTO catalytic oxidation furnace riser valve according to claim 5, characterized in that: The bottom surface of the heat insulation cylinder (33) is coaxially fixedly mounted with a lower rod (36). The lower rod (36) has a storage cavity inside. A liquid guide pipe (37) is fixedly mounted on the outer wall of the lower rod (36). The end of the liquid guide pipe (37) away from the lower rod (36) passes through the side wall of the heat insulation cylinder (33) and is connected to the corrugated sleeve (34).

7. The RTO catalytic oxidation furnace riser valve according to claim 1, characterized in that: The internal mounting assembly (4) includes a valve leaf flange (41), and a number of support rods (42) are fixedly installed on the outer wall of the valve leaf flange (41). The ends of the support rods (42) away from the valve leaf flange (41) are fixedly connected to the bottom surface of the valve outer plate (11). An mounting cylinder (411) is fixedly installed at the center of the valve leaf flange (41). A second bushing (43) is coaxially fixedly installed on the inner wall of the mounting cylinder (411). The lower rod (36) is slidably inserted into the inner wall of the second bushing (43).

8. The RTO catalytic oxidation furnace riser valve according to claim 1, characterized in that: The valve vane assembly (5) includes a valve vane body (51), the outer wall size of the valve vane body (51) is adapted to the inner wall size of the valve vane flange (41), and the bottom end of the lower rod (36) passes through the second bushing (43) and is coaxially fixedly connected to the valve vane body (51).

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