Horizontal pushing valve of heat accumulating type oxidation furnace

Abstract

The utility model discloses a heat accumulating type oxidation furnace horizontal pushing valve, which belongs to the technical field of waste gas treatment and comprises an outer pipeline component and an inner pipeline component, the inner pipeline component is arranged on one side of the outer pipeline component, valve rods are inserted into the outer pipeline component and the inner pipeline component in a sliding manner, and one ends, close to each other, of the two valve rods are fixedly connected with a valve plate component. The valve plate assembly is located between the outer pipeline assembly and the inner pipeline assembly, the end, close to the valve plate assembly, of the inner pipeline assembly is fixedly connected with a flexible graphite dust-free asbestos sealing ring, and the flexible graphite dust-free asbestos sealing ring corresponds to the valve plate assembly. The horizontal pushing valve aims to solve the problems that in the prior art, a sealing ring used by a horizontal pushing valve is mainly made of aramid fibers and carbon materials or metal in a butt-joint sealing mode, the sealing effect is poor, meanwhile, sealing aging is fast, impurities are prone to being left on the sealing ring after long-time use due to the fact that part of waste gas contains the impurities, and the sealing effect is poor. And poor sealing is caused when the valve plate is in contact with the sealing ring.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, and more specifically to a horizontal push valve of a thermal storage oxidation furnace. Background Art

[0002] The regenerative thermal oxidizer is also called a regenerative thermal incinerator, abbreviated as "RTO". The exhaust gas is first heated to a temperature close to the thermal oxidation temperature by a regenerative body, and then enters the combustion chamber for thermal oxidation. The temperature of the oxidized gas increases, and the organic matter is basically converted into carbon dioxide and water. The purified gas passes through another regenerative body, and the temperature drops. It can be discharged after meeting the emission standards.

[0003] At present, the opening and closing of the regenerative thermal oxidation furnace are controlled by a push-type valve. The push-type valve is mainly composed of a valve body, a valve stem, a valve plate and a sealing ring. However, the sealing rings used in most existing push-type valves are mainly made of aramid and carbon materials or metal butt seals, which not only have poor sealing effects, but also age quickly. Moreover, since some exhaust gases contain impurities, the impurities are easily retained on the sealing ring after long-term use, resulting in poor sealing when the valve plate and the sealing ring contact. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] In response to the problems existing in the prior art, the purpose of the present utility model is to provide a horizontal push valve for a thermal storage oxidation furnace, aiming to solve the problem that the sealing rings used in the horizontal push valves in the prior art mainly adopt aramid and carbon materials or metal butt seals, which not only have poor sealing effects, but also age quickly. Moreover, since some exhaust gases contain impurities, the impurities are easily left on the sealing ring after long-term use, resulting in poor sealing when the valve plate and the sealing ring contact.

[0006] 2. Technical solution

[0007] In order to solve the above problems, the present invention adopts the following technical solutions:

[0008] A regenerative oxidation furnace push valve comprises an outer pipe assembly and an inner pipe assembly, the inner pipe assembly is arranged on one side of the outer pipe assembly, and valve stems are slidably inserted in the outer pipe assembly and the inner pipe assembly, and the ends of the two valve stems that are close to each other are fixedly connected to a valve plate assembly, and the valve plate assembly is located between the outer pipe assembly and the inner pipe assembly, and the end of the inner pipe assembly close to the valve plate assembly is fixedly connected to a flexible graphite dust-free asbestos sealing ring, and the flexible graphite dust-free asbestos sealing ring corresponds to the valve plate assembly, and the outer surface of the inner pipe assembly is fixedly connected to a plurality of fixed assemblies, and the plurality of fixed assemblies are slidably connected to baffles, and the plurality of baffles are in contact with one end of the flexible graphite dust-free asbestos sealing ring, and a connecting rod mechanism is provided between the valve plate assembly and the plurality of baffles, and the connecting rod mechanism cooperates with the valve plate assembly to control the movement of the plurality of baffles.

[0009] As a preferred solution of the present invention, the connecting rod mechanism includes multiple spring assemblies, multiple compensation rods and multiple hinged rods. The multiple spring assemblies are respectively sleeved on the outer surfaces of multiple fixed assemblies, and the multiple spring assemblies respectively correspond to multiple baffles. The multiple compensation rods are respectively movable through the multiple valve plate assemblies, and the multiple hinged rods are respectively hinged between the multiple compensation rods and the multiple baffles through hinge shafts.

[0010] As a preferred solution of the present invention, one end of the outer pipe assembly and the inner pipe assembly are both rotatably connected to a guide wheel assembly, and the two valve stems are respectively slidably connected to the two guide wheel assemblies.

[0011] As a preferred solution of the present invention, a graphite packing is provided in the outer pipe assembly, and the graphite packing is in contact with the outer surface of a valve stem.

[0012] 3. Beneficial effects

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) In this solution, the outer pipe assembly and the inner pipe assembly are installed in the thermal oxidation furnace. One end of the valve stem in the outer pipe assembly is connected to the cylinder. The two valve stems are controlled by the cylinder to drive the valve plate assembly to move. The two valve stems slide in the outer pipe assembly and the inner pipe assembly respectively to control the movement of the valve plate assembly to realize the opening and closing of the valve. During the closing process of the valve, the valve plate assembly uses a connecting rod mechanism to expand multiple baffles to leak out and fit the flexible graphite dust-free asbestos sealing ring. The flexible graphite dust-free asbestos sealing ring replaces the conventional aramid and carbon sealing rings, has good sealing effect, is not easy to age, and is easy to replace.

[0015] (2) In this solution, when the valve plate assembly is away from the flexible graphite dust-free asbestos sealing ring so that the valve is opened to transport the exhaust gas to the thermal storage oxidation furnace, the connecting rod mechanism resets the multiple baffles, cleans the end face of the flexible graphite dust-free asbestos sealing ring close to the valve plate assembly, and blocks it, so that the flexible graphite dust-free asbestos sealing ring and the corresponding end face of the valve plate assembly remain clean, thereby avoiding impurities remaining on the flexible graphite dust-free asbestos sealing ring, resulting in poor sealing when the valve plate assembly contacts the flexible graphite dust-free asbestos sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main view of the utility model;

[0017] Figure 2 It is a three-dimensional diagram of the utility model;

[0018] Figure 3 It is a cross-sectional view of the utility model;

[0019] Figure 4 This is an exploded view of the present invention.

[0020] Description of the numbers in the figure:

[0021] 1. External pipe assembly; 2. Internal pipe assembly; 3. Valve stem; 4. Valve plate assembly; 5. Flexible graphite dust-free asbestos sealing ring; 6. Fixed assembly; 7. Baffle; 81. Spring assembly; 82. Compensating rod; 83. Articulated rod; 9. Guide wheel assembly; 10. Graphite packing. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0025] Example:

[0026] See also Figure 1-4 , a regenerative oxidation furnace push valve, comprising an outer pipe component 1 and an inner pipe component 2, the inner pipe component 2 is arranged on one side of the outer pipe component 1, and valve stems 3 are slidably inserted in the outer pipe component 1 and the inner pipe component 2, and the ends of the two valve stems 3 that are close to each other are fixedly connected to a valve plate component 4, and the valve plate component 4 is located between the outer pipe component 1 and the inner pipe component 2, and the end of the inner pipe component 2 close to the valve plate component 4 is fixedly connected to a flexible graphite dust-free asbestos sealing ring 5, and the flexible graphite dust-free asbestos sealing ring 5 corresponds to the valve plate component 4, and a plurality of fixed components 6 are fixedly connected to the outer surface of the inner pipe component 2, and baffles 7 are slidably connected to the multiple fixed components 6, and the multiple baffles 7 are in contact with one end of the flexible graphite dust-free asbestos sealing ring 5, and a connecting rod mechanism is provided between the valve plate component 4 and the multiple baffles 7, and the connecting rod mechanism cooperates with the valve plate component 4 to control the movement of the multiple baffles 7.

[0027] In this embodiment, the flexible graphite dust-free asbestos sealing ring 5 replaces the conventional aramid and carbon sealing rings, which has good sealing effect, is not easy to age, and is easy to replace. The outer pipe assembly 1 and the inner pipe assembly 2 are installed in the regenerative thermal oxidation furnace, and one end of the valve stem 3 in the outer pipe assembly 1 is connected to the cylinder, which controls the two valve stems 3 to drive the valve plate assembly 4 to move, and the valve plate assembly 4 contacts the flexible graphite dust-free asbestos sealing ring 5 to achieve closing, and the valve plate assembly 4 is away from the flexible graphite dust-free asbestos sealing ring 5 to open the valve, and the valve plate assembly 4 is in the process of closing when it is close to the flexible graphite dust-free asbestos sealing ring 5. During the process, the connecting rod mechanism pushes the multiple baffles 7 away from each other, and the multiple baffles 7 slide on the multiple fixed components 6, so that the flexible graphite dust-free asbestos sealing ring 5 leaks out and corresponds to the valve plate component 4, and the valve plate component 4 and the flexible graphite dust-free asbestos sealing ring 5 are fitted together for sealing. When the valve plate component 4 is away from the flexible graphite dust-free asbestos sealing ring 5 and opens, the connecting rod mechanism resets the multiple baffles 7, cleans and blocks the end face of the flexible graphite dust-free asbestos sealing ring 5 close to the valve plate component 4, and prevents impurities in the exhaust gas from adhering to the flexible graphite dust-free asbestos sealing ring 5 and affecting the sealing effect.

[0028] Specifically, the connecting rod mechanism includes multiple spring assemblies 81, multiple compensation rods 82 and multiple hinged rods 83. The multiple spring assemblies 81 are respectively mounted on the outer surfaces of the multiple fixed assemblies 6, and the multiple spring assemblies 81 respectively correspond to the multiple baffles 7. The multiple compensation rods 82 are respectively movable through the multiple valve plate assemblies 4, and the multiple hinged rods 83 are respectively hinged between the multiple compensation rods 82 and the multiple baffles 7 through hinge shafts.

[0029] In this embodiment, when the valve plate assembly 4 approaches the flexible graphite dust-free asbestos sealing ring 5 to close the valve, the valve plate assembly 4 first slides on multiple compensation rods 82. After the valve plate assembly 4 slides to correspond to the multiple hinged rods 83, it continues to move through the multiple hinged rods 83 to push the multiple baffles 7 to slide on the multiple fixed assemblies 6. The multiple baffles 7 expand outward, so that the flexible graphite dust-free asbestos sealing ring 5 leaks out and corresponds to the valve plate assembly 4. The valve plate assembly 4 and the flexible graphite dust-free asbestos sealing ring 5 fit together to seal the valve and close it. When the valve plate assembly 4 moves away from the flexible graphite dust-free asbestos sealing ring 5 to open the valve, the elastic force of the multiple spring assemblies 81 acts on the multiple baffles 7 respectively, causing the multiple baffles 7 to reset. The multiple baffles 7 clean and block the end face of the flexible graphite dust-free asbestos sealing ring 5 close to the valve plate assembly 4, so that the contact surface of the flexible graphite dust-free asbestos sealing ring 5 and the valve plate assembly 4 remains clean.

[0030] Specifically, one end of the outer pipe assembly 1 and the inner pipe assembly 2 are both rotatably connected to the guide wheel assembly 9, and the two valve stems 3 are respectively slidably connected to the two guide wheel assemblies 9.

[0031] In this embodiment, the two guide wheel assemblies 9 are used to assist the movement of the two valve stems 3 , reduce the wear caused by the movement of the two valve stems 3 , and increase the service life of the two valve stems 3 .

[0032] Specifically, a graphite packing 10 is provided in the outer pipe assembly 1 , and the graphite packing 10 is in contact with the outer surface of a valve stem 3 .

[0033] In this embodiment, the graphite packing 10 is suitable for dynamic sealing under high temperature and high pressure conditions, so that the connection between the outer pipe assembly 1 and the valve stem 3 maintains a good sealing effect to prevent exhaust gas leakage.

[0034] Working principle: The outer pipe assembly 1 and the inner pipe assembly 2 are installed in the regenerative thermal oxidation furnace. One end of the valve stem 3 in the outer pipe assembly 1 is connected to the cylinder. The two valve stems 3 are controlled by the cylinder to drive the valve plate assembly 4 to move. When the valve plate assembly 4 approaches the flexible graphite dust-free asbestos sealing ring 5 to close the valve, the valve plate assembly 4 first slides on multiple compensation rods 82. After the valve plate assembly 4 slides to correspond to the multiple hinged rods 83, it continues to move through the multiple hinged rods 83 to push the multiple baffles 7 to slide on the multiple fixed components 6, and the multiple baffles 7 expand outward. , so that the flexible graphite dust-free asbestos sealing ring 5 leaks out and corresponds to the valve plate assembly 4, the valve plate assembly 4 and the flexible graphite dust-free asbestos sealing ring 5 fit together to seal the valve and close it, when the valve plate assembly 4 is away from the flexible graphite dust-free asbestos sealing ring 5 to open the valve, the elastic forces of the multiple spring assemblies 81 act on the multiple baffles 7 respectively, so that the multiple baffles 7 are reset, and the multiple baffles 7 clean and block the end face of the flexible graphite dust-free asbestos sealing ring 5 close to the valve plate assembly 4, to prevent impurities in the exhaust gas from adhering to the flexible graphite dust-free asbestos sealing ring 5 and affecting the sealing effect.

[0035] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and improved ideas of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A regenerative thermal oxidation furnace push valve, comprising an outer pipe assembly (1) and an inner pipe assembly (2), characterized in that: The inner pipe assembly (2) is arranged on one side of the outer pipe assembly (1), and valve stems (3) are slidably inserted in the outer pipe assembly (1) and the inner pipe assembly (2), and the ends of the two valve stems (3) close to each other are fixedly connected to the valve plate assembly (4), and the valve plate assembly (4) is located between the outer pipe assembly (1) and the inner pipe assembly (2), and the end of the inner pipe assembly (2) close to the valve plate assembly (4) is fixedly connected to a flexible graphite dust-free asbestos sealing ring (5), and the flexible graphite dust-free asbestos sealing ring (5) corresponds to the valve plate assembly (4), and the outer surface of the inner pipe assembly (2) is fixedly connected to multiple fixed assemblies (6), and the multiple fixed assemblies (6) are slidably connected to baffles (7), and the multiple baffles (7) are in contact with one end of the flexible graphite dust-free asbestos sealing ring (5), and a connecting rod mechanism is provided between the valve plate assembly (4) and the multiple baffles (7), and the connecting rod mechanism cooperates with the valve plate assembly (4) to control the movement of the multiple baffles (7).

2. The regenerative thermal oxidation furnace push valve according to claim 1, characterized in that: The connecting rod mechanism includes a plurality of spring assemblies (81), a plurality of compensation rods (82) and a plurality of hinged rods (83), the plurality of spring assemblies (81) are respectively sleeved on the outer surfaces of the plurality of fixed assemblies (6), and the plurality of spring assemblies (81) respectively correspond to the plurality of baffles (7), the plurality of compensation rods (82) are respectively movable through the plurality of valve plate assemblies (4), and the plurality of hinged rods (83) are respectively hinged between the plurality of compensation rods (82) and the plurality of baffles (7) through hinge shafts.

3. The regenerative thermal oxidation furnace push valve according to claim 2, characterized in that: One end of the outer pipe assembly (1) and the inner pipe assembly (2) are both rotatably connected to a guide wheel assembly (9), and the two valve stems (3) are respectively slidably connected to the two guide wheel assemblies (9).

4. The regenerative thermal oxidation furnace push valve according to claim 3, characterized in that: A graphite packing (10) is provided in the outer pipe assembly (1), and the graphite packing (10) is in contact with the outer surface of a valve stem (3).

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