RTO square high-temperature butterfly valve

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to an RTO square high-temperature butterfly valve which comprises a valve body, a valve shaft is connected to the middle in the valve body in a penetrating mode, a connecting sleeve is connected to the upper portion of the valve shaft in a sliding and sleeved mode, and an electric actuator is fixedly connected to the top of the connecting sleeve through a bolt. The valve body main body comprises an outer plate and an inner plate, bauxite is filled between the outer plate and the inner plate, and a plurality of anchoring nails are uniformly arranged in the bauxite. According to the RTO square high-temperature butterfly valve, through the design of high-temperature-resistant materials, castable and anchoring nails, the high-temperature-resistant performance and stability are improved, expansion joints and compression springs effectively relieve thermal expansion and cold contraction, efficient heat dissipation is guaranteed through the connecting sleeve cooling fins and the hollow cooling structure of the valve shaft, and the service life is prolonged. The sealing performance, reliability and safety of the valve are further improved through the design, and the valve is suitable for high-temperature working conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to an RTO square high-temperature butterfly valve. Background Art

[0002] With the development of society, the requirements of the organic waste gas VOCs treatment industry for environmental protection equipment are getting higher and higher. The regenerator thermal oxidizer (RTO) system has been widely used in industrial waste gas treatment due to its high efficiency and energy saving. However, the high-temperature square valves used in the existing RTO system still have many problems and defects. For example, in a high temperature environment, the valve body is prone to overall deformation, the valve plate may warp, the valve shaft may get stuck, the sealing effect is poor, the refractory material may collapse or crack, and even high temperature conduction may cause damage to the actuator. These problems not only affect the service life of the valve, but also reduce the operating efficiency and safety of the system. Therefore, we propose an RTO square high-temperature butterfly valve. Utility Model Content

[0003] The main purpose of the utility model is to provide an RTO square high-temperature butterfly valve, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] An RTO square high-temperature butterfly valve comprises a valve body, a valve shaft is inserted and connected in the middle of the valve body, a connecting sleeve is slidably sleeved on the upper part of the valve shaft, and an electric actuator is fixedly connected to the top of the connecting sleeve by bolts.

[0006] Preferably, the valve body comprises an outer plate and an inner plate, the space between the outer plate and the inner plate is filled with bauxite, and a plurality of anchoring nails are evenly arranged in the bauxite.

[0007] The outer plate, inner plate and valve shaft are made of high temperature resistant material 310S or special high temperature resistant alloy steel, which can withstand high temperature environment and ensure the stability and reliability of the valve under high temperature conditions.

[0008] Preferably, a spline hole for use with the valve shaft is opened in the middle of the lower end of the connecting sleeve, and the connecting sleeve is slidably sleeved on the outside of the valve shaft through the spline hole. A compression spring is fixedly connected to the upper inner wall of the spline hole. The compression spring is coaxially arranged with the spline hole and the lower end is fixedly connected to the upper end of the valve shaft.

[0009] By adopting the above technical solution: the upper part of the valve shaft is integrally formed with a spline, the valve shaft is slidingly connected to the spline hole through the spline, and the compression spring is designed to limit the expansion caused by thermal expansion and contraction of the valve shaft and the connecting sleeve, ensuring the stable operation of the valve at different temperatures.

[0010] Preferably, a heat sink is fixedly connected to the outer surface of the connecting sleeve.

[0011] By adopting the above technical solution: it is possible to accelerate the dissipation of heat, prevent high temperature from being transmitted to the electric actuator, protect the electric actuator from being affected by high temperature, and extend its service life.

[0012] Preferably, the valve shaft is a hollow structure, and a cooling hole is provided on the valve shaft, and the cooling hole is located in the middle of the valve shaft.

[0013] By adopting the above technical solution: compressed air can be introduced into the cooling hole to reduce the temperature, prevent deformation or jamming caused by long-term high temperature, and improve the high temperature resistance and reliability of the valve.

[0014] Preferably, expansion joints are arranged around the outer surface of the inner plate.

[0015] By adopting the above technical solution: not only can the thermal expansion and contraction effect be effectively alleviated, but also additional thermal compensation space can be provided to adapt to the operating requirements in extreme temperature difference environments.

[0016] Preferably, the anchor nail is a Y-shaped structure, and the outer surface of the anchor nail is coated with asphalt paint.

[0017] By adopting the above technical solution: the design of the Y-type anchor nail helps to improve the stability of the castable, ensure that the castable will not fall off or collapse during long-term use in a high temperature environment, and enhance the overall structural strength of the valve body.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The RTO square high-temperature butterfly valve of the utility model adopts high-temperature resistant material 310S or special high-temperature resistant alloy steel to make the outer plate, inner plate and valve shaft, ensuring the stability and reliability of the valve in high-temperature environment. In addition, high-quality high-temperature resistant castables are filled between the outer plate and the inner plate of the valve body, and Y-shaped anchor nails are set. The surface of the anchor nails is coated with asphalt paint to enhance the adhesion of the castable and avoid deformation or shedding of the material under high temperature. These designs together ensure the long-term stable operation of the valve in high-temperature environment and extend the service life of the valve.

[0020] 2. The utility model effectively alleviates the thermal expansion and contraction effect caused by high temperature by setting expansion joints around the outer surface of the inner plate of the valve body, prevents the main body of the valve body from deforming, and ensures the normal opening and closing of the valve. At the same time, a spline hole matching the valve shaft is provided inside the connecting sleeve, and a compression spring is provided in the spline hole to limit the expansion caused by the thermal expansion and contraction of the valve shaft and the connecting sleeve, ensuring the stable operation of the valve at different temperatures. This design not only improves the reliability and service life of the valve, but also reduces the risk of failure caused by thermal expansion and contraction.

[0021] 3. The connection sleeve of the utility model is fixedly connected with a heat sink on the outside, which can accelerate the heat dissipation, prevent high temperature from being transmitted to the electric actuator, protect the electric actuator from being affected by high temperature, and extend its service life. In addition, the valve shaft adopts a hollow structure, and a cooling hole is provided on the valve shaft, which can be cooled by compressed air to prevent deformation or jamming caused by long-term high temperature, thereby improving the high temperature resistance and reliability of the valve. These designs ensure efficient heat dissipation and cooling of the valve in high temperature environments, further improving the overall performance and safety of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of the overall structure of an RTO square high-temperature butterfly valve of the utility model;

[0023] Figure 2 This is an enlarged view of the structure at point A of an RTO square high-temperature butterfly valve of the utility model;

[0024] Figure 3 This is an enlarged view of the structure at position B of an RTO square high-temperature butterfly valve of the utility model;

[0025] Figure 4 This is an enlarged view of the structure at position C of an RTO square high-temperature butterfly valve of the utility model;

[0026] Figure 5 It is a top view of the overall structure of an RTO square high-temperature butterfly valve of the utility model.

[0027] In the figure: 1. valve body; 11. outer plate; 12. inner plate; 121. expansion joint; 13. bauxite; 14. anchor nail; 2. valve shaft; 21. cooling hole; 3. connecting sleeve; 31. spline hole; 32. compression spring; 33. heat sink; 4. electric actuator. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] See also Figure 1-5 , the utility model provides a technical solution:

[0032] An RTO square high-temperature butterfly valve comprises a valve body 1, a valve shaft 2 is inserted and connected in the middle of the valve body 1, a connecting sleeve 3 is slidably sleeved on the upper part of the valve shaft 2, and an electric actuator 4 is fixedly connected to the top of the connecting sleeve 3 by bolts.

[0033] In this embodiment, the valve body 1 includes an outer plate 11 and an inner plate 12, and bauxite 13 is filled between the outer plate 11 and the inner plate 12, and a number of anchor nails 14 are evenly arranged in the bauxite 13; expansion joints 121 are arranged around the outer surface of the inner plate 12; the anchor nail 14 is a Y-shaped structure, and the outer surface of the anchor nail 14 is coated with asphalt paint.

[0034] Through the above scheme: the outer plate 11, the inner plate 12 and the valve shaft 2 are all made of high-temperature resistant material 310S or special high-temperature resistant alloy steel, which ensures the stability and reliability of the valve in a high-temperature environment. High-quality high-temperature resistant castable 13 is filled between the outer plate 11 and the inner plate 12 of the valve body 1, and a Y-shaped anchor nail 14 is provided. The surface of the anchor nail 14 is coated with asphalt paint to enhance the adhesion of the castable 13 and avoid deformation or shedding of the material under high temperature. These designs together ensure the long-term stable operation of the valve in a high-temperature environment and extend the service life of the valve. In addition, by setting expansion joints 121 around the outer surface of the inner plate 12 of the valve body, the thermal expansion and contraction effect caused by high temperature is effectively alleviated, the valve body 1 is prevented from deforming, and the normal opening and closing of the valve is ensured.

[0035] In this embodiment, a spline hole 31 for use with the valve shaft 2 is opened in the middle of the lower end of the connecting sleeve 3. The connecting sleeve 3 is slidably sleeved on the outside of the valve shaft 2 through the spline hole 31. A compression spring 32 is fixedly connected to the upper inner wall of the spline hole 31. The compression spring 32 is coaxially arranged with the spline hole 31 and the lower end is fixedly connected to the upper end of the valve shaft 2; a heat sink 33 is fixedly connected to the outer surface of the connecting sleeve 3; the valve shaft 2 is a hollow structure, and a cooling hole 21 is provided on the valve shaft 2. The cooling hole 21 is located in the middle of the valve shaft 2, and compressed air can be passed in for cooling, thereby preventing deformation or jamming caused by long-term high temperature, thereby improving the high temperature resistance and reliability of the valve.

[0036] Through the above scheme: the upper part of the valve shaft 2 is integrally formed with a spline, and the valve shaft 2 is slidably connected to the spline hole 31 on the connecting sleeve 3 through the spline, and the compression spring 32 is designed to limit the expansion caused by the thermal expansion and contraction of the valve shaft 2 and the connecting sleeve 3, ensuring the stable operation of the valve at different temperatures. This design not only improves the reliability and service life of the valve, but also reduces the risk of failure caused by thermal expansion and contraction. In addition, a heat sink 33 is fixedly connected to the outside of the connecting sleeve 3, which can accelerate the dissipation of heat, prevent high temperature from being transmitted to the electric actuator 4, protect the electric actuator 4 from being affected by high temperature, and extend its service life. These designs ensure efficient heat dissipation and cooling of the valve in a high temperature environment, further improving the overall performance and safety of the valve.

[0037] It should be noted that the utility model is an RTO square high-temperature butterfly valve. During use, the electric actuator 4 is fixed to the top of the connecting sleeve 3 by bolts to control the rotation of the valve shaft 2. When the electric actuator 4 receives an opening or closing signal, it drives the valve shaft 2 to rotate, driving the valve plate to rotate in the valve body 1 to achieve the opening and closing of the valve. The cooling hole 21 on the valve shaft 2 allows compressed air to pass through, taking away the heat in the shaft, keeping the valve shaft 2 at a low temperature, and preventing deformation or jamming caused by high temperature. When the temperature rises, the valve shaft 2 and the connecting sleeve 3 will undergo thermal expansion. The spline hole 31 and the compression spring 32 inside the connecting sleeve 3 can absorb this part of the expansion, prevent excessive extrusion between the valve shaft 2 and the connecting sleeve 3, and ensure the normal operation of the valve. The expansion joint 121 on the inner side of the valve body can adapt to the thermal expansion and contraction caused by temperature changes, prevent the valve body 1 from deforming, and ensure the sealing and stability of the valve. The heat sink 33 outside the connecting sleeve 3 can effectively dissipate heat to In the surrounding environment, high temperature is prevented from being conducted to the electric actuator 4, and the electric actuator 4 is protected from being affected by high temperature. The hollow structure of the valve shaft 2 and the design of the cooling hole 21 allow compressed air to enter the inside of the valve shaft 2 through the cooling hole 21, take away heat, maintain the low temperature state of the valve shaft 2, and improve the high temperature resistance and reliability of the valve. The outer plate 11 and the inner plate 12 of the valve body 1 are filled with high-quality high-temperature resistant castables 13, and Y-shaped anchor nails 14 are arranged between the castables 13. The surface of the anchor nails 14 is coated with asphalt paint, which enhances the adhesion of the castable 13 and avoids deformation or falling off of the material under high temperature. The design of the expansion joint 121 can not only alleviate the thermal expansion and contraction effect, but also provide additional thermal compensation space to adapt to the operation requirements under extreme temperature difference environments and ensure the long-term stable operation of the valve. The RTO square high-temperature butterfly valve of the present application can maintain good sealing and stability in high temperature environments, is suitable for various high-temperature working conditions, and has broad application prospects.

[0038] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An RTO square high-temperature butterfly valve, comprising a valve body (1), characterized in that: A valve shaft (2) is inserted and connected in the middle of the valve body (1); a connecting sleeve (3) is slidably sleeved on the upper part of the valve shaft (2); and an electric actuator (4) is fixedly connected to the top of the connecting sleeve (3) by means of bolts; The valve body (1) comprises an outer plate (11) and an inner plate (12), wherein bauxite (13) is filled between the outer plate (11) and the inner plate (12), and a plurality of anchoring nails (14) are evenly arranged in the bauxite (13).

2. The RTO square high temperature butterfly valve according to claim 1, characterized in that: A spline hole (31) for use with the valve shaft (2) is formed in the middle of the lower end of the connecting sleeve (3); the connecting sleeve (3) is slidably sleeved on the outside of the valve shaft (2) through the spline hole (31); a compression spring (32) is fixedly connected to the upper inner wall of the spline hole (31); the compression spring (32) is coaxially arranged with the spline hole (31) and the lower end of the compression spring is fixedly connected to the upper end of the valve shaft (2).

3. The RTO square high temperature butterfly valve according to claim 1 is characterized in that: A heat sink (33) is fixedly connected to the outer surface of the connecting sleeve (3).

4. The RTO square high temperature butterfly valve according to claim 1, characterized in that: The valve shaft (2) is a hollow structure, and a cooling hole (21) is provided on the valve shaft (2), wherein the cooling hole (21) is located in the middle of the valve shaft (2).

5. The RTO square high temperature butterfly valve according to claim 3 is characterized in that: Expansion joints (121) are arranged around the outer surface of the inner plate (12).

6. The RTO square high temperature butterfly valve according to claim 4, characterized in that: The anchor nail (14) is of a Y-shaped structure, and the outer surface of the anchor nail (14) is coated with asphalt paint.

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