High-temperature butterfly valve for high-temperature flue gas pipeline of cement production system

Abstract

The utility model relates to the technical field of cement system high-temperature flue gas pipeline adjustment, in particular to a high-temperature butterfly valve for a cement production system high-temperature flue gas pipeline, which comprises a valve plate body, a reinforcing rib plate, an outer baffle, a connecting flange and a valve plate shaft. The plate body of the valve plate adopts a split design and consists of two plate bodies which are fastened and connected through a connecting flange and a bolt; the reinforcing rib plates are arranged in the middle of the valve plate body, distributed longitudinally and transversely and used for improving the overall strength of the valve plate. The outer baffle is arranged in the peripheral direction outside the valve plate and used for preventing the refractory material outside the valve plate from falling off, and the service life is prolonged; through optimization design and structural improvement, durability, stability and maintenance economy of the butterfly valve are remarkably improved, and reliable technical support is provided for safe and long-term operation of a cement production system.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature smoke and air duct regulation of a cement system, in particular to a high-temperature butterfly valve used for a high-temperature smoke duct of a cement production system. Background Art

[0002] In recent years, with the cooling of my country's real estate industry, its related industrial chains such as steel, cement, building materials, and construction have suffered serious setbacks. In order to reduce internal financial pressure, most industries have tried every means to tap the potential for energy saving, consumption reduction, and production increase from all aspects of internal production.

[0003] In the process of cement production, a large amount of heat is required in each link. Since the heat transmission requires a large number of pipes, regulating butterfly valves are installed in each pipe to reasonably adjust the amount of heat according to production needs. Since the regulating butterfly valve is used in a high temperature environment for a long time, and since the high temperature gas contains a large amount of corrosive substances, the butterfly valve is seriously corroded and burned, and the valve plate and valve plate shaft are broken, causing accidents such as failure of the regulating butterfly valve and the inability to regulate heat, which has a great impact on the process operation of the production system. In severe cases, it causes the system to stop production and stop production, causing great losses to the enterprise.

[0004] In most cases, the valve plate is severely burned and the plate body is broken. Since the valve body and the shaft of the existing regulating butterfly valve are designed as an integral whole, the valve plate and the shaft must be replaced as a whole during replacement, which increases the maintenance cost.

[0005] Therefore, it is necessary to adopt a regulating butterfly valve with a more reasonable design structure to reduce the accident rate, extend the service life of the regulating butterfly valve, and ensure the safe and long-term operation of the kiln system. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a high-temperature butterfly valve for a high-temperature flue gas pipeline in a cement production system.

[0007] The utility model provides a high-temperature butterfly valve for a high-temperature flue gas pipeline in a cement production system, comprising: a valve plate body, a reinforcing rib plate, an outer baffle plate, a connecting flange and a valve plate shaft. The valve plate body adopts a split design, consisting of two plate bodies, which are fastened and connected by connecting flanges and bolts. The reinforcing rib plate is arranged in the middle part of the valve plate body, distributed vertically and horizontally, and is used to increase the overall strength of the valve plate. The outer baffle plate is arranged in the outer circumferential direction of the valve plate, which is used to prevent the refractory material outside the valve plate from falling off and prolong the service life.

[0008] Preferably, the connecting flange has a rectangular groove for positioning and connecting with the square neck portion of the valve plate shaft. The square neck size of the valve plate shaft matches the groove size to ensure that the connection is tight and does not move. A keyway is machined at one end of the valve plate shaft to facilitate connection with an external transmission control device.

[0009] Preferably, the valve plate body, the reinforcing rib plate, the outer baffle plate and the connecting flange are integrally cast, so as to further improve the overall strength and durability of the valve plate.

[0010] Preferably, the valve plate shaft is made of 0Cr25Ni20, which has excellent heat resistance; a keyway is provided at one end of the valve plate shaft to facilitate connection with an external transmission device.

[0011] Preferably, a sealing gasket is provided on the contact surface between the connecting flange and the valve plate body to improve the sealing performance of the device and prevent leakage of high-temperature flue gas.

[0012] Preferably, a lifting hole is provided on the valve plate shaft to facilitate transportation and installation using lifting equipment.

[0013] Preferably, the arrangement and number of the reinforcing ribs are optimized to improve the strength and rigidity of the valve plate body, while reducing the amount of material used to achieve a lightweight design.

[0014] Preferably, the outer baffle is made of high temperature resistant and corrosion resistant material to enhance its service life and stability in high temperature and corrosive environments.

[0015] Compared with the related art, the high-temperature butterfly valve for high-temperature flue gas pipeline of cement production system provided by the utility model has the following beneficial effects:

[0016] Firstly, the design structure of the device is more reasonable, which can significantly reduce the accident rate; its valve plate body, reinforcing rib plate, outer baffle plate, connecting flange and valve plate shaft have been carefully designed and optimized, so that the entire butterfly valve device exhibits stronger durability and stability when subjected to high temperature and corrosive substances, greatly reducing the probability of accidents such as valve plate and valve plate shaft breakage;

[0017] Secondly, the device can extend the service life of the regulating butterfly valve; by optimizing the design and material selection, the butterfly valve can maintain good performance even in harsh working environments, reducing the need for replacement due to corrosion, burning and other reasons, thereby extending the overall service life of the butterfly valve;

[0018] Furthermore, the device is more convenient and economical in maintenance and replacement. When the valve plate of a traditional regulating butterfly valve is severely burned, the valve plate and the shaft usually need to be replaced as a whole, which increases the maintenance cost. However, the design of the device allows the valve plate to be replaced alone when replacement is required, without the need for overall replacement, thereby reducing maintenance costs and improving maintenance efficiency.

[0019] Finally, the device provides a strong guarantee for the safe and long-term operation of the cement production system; by improving the durability and stability of the butterfly valve, it reduces the risk of production interruption and shutdown due to equipment failure, ensures the continuous and stable operation of the production system, and improves the production efficiency and economic benefits of the enterprise;

[0020] In summary, this butterfly valve device suitable for high-temperature flue gas ducts in cement production systems significantly improves the durability, stability and maintenance economy of the butterfly valve through optimized design and structural improvement, providing reliable technical support for the safe and long-term operation of the cement production system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall connection between the valve plate body and the shaft;

[0022] Figure 2 This is a schematic diagram of the valve plate shaft of the utility model;

[0023] Figure 3 It is a schematic diagram of the valve plate body of the utility model.

[0024] Numbers in the figure: 1, valve plate body; 2, reinforcing rib plate; 3, outer baffle plate; 4, connecting flange; 5, valve plate shaft; 6, keyway; 9, square neck; 10, groove. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0027] See also Figure 1-3A high-temperature butterfly valve for a high-temperature flue gas pipeline in a cement production system, the high-temperature butterfly valve for a high-temperature flue gas pipeline in a cement production system comprising: a valve plate body 1, a reinforcing rib plate 2, an outer baffle plate 3, a connecting flange 4 and a valve plate shaft 5; the valve plate as a whole is composed of two valve plate bodies 1, and the two halves of the valve plate are positioned and connected with the square neck 9 of the valve plate shaft 5 through the groove 10 of the connecting flange 4, and bolts 7 are arranged around the flange to fasten the two halves of the valve plate body; the middle part of the valve plate body 1 is arranged with reinforcing rib plates 2 distributed vertically and horizontally, and an outer baffle plate 3 is arranged in the circumferential direction of the outer side of the valve plate, and the valve plate body 1, the reinforcing rib plate 2, the outer baffle plate 3, and the connecting flange 4 are integrally cast to ensure the connection strength between the components. The valve plate shaft 5 is made of 0Cr25Ni20 and has excellent heat resistance. A keyway 6 is provided at one end of the valve plate shaft 5 for easy connection with external transmission equipment. A sealing gasket is provided on the contact surface between the connecting flange 4 and the valve plate body 1 to improve the sealing performance of the device and prevent leakage of high-temperature flue gas. A lifting hole is provided on the valve plate shaft 5 to facilitate transportation and installation using lifting equipment. The arrangement and number of the reinforcing rib plates 2 are optimized to improve the strength and rigidity of the valve plate body 1 while reducing the amount of material used to achieve a lightweight design. The outer baffle 3 is made of high-temperature resistant and corrosion-resistant materials to enhance its service life and stability in high temperature and corrosive environments.

[0028] The working principle of the high-temperature butterfly valve for high-temperature flue gas pipeline in cement production system provided by the utility model is as follows:

[0029] Firstly, the valve plate body 1 is the main part of the butterfly valve. Through its split design, when repairing or replacing, the damaged part can be replaced separately without replacing the whole, thereby reducing the maintenance cost; the outer circumference of the valve plate body 1 is provided with an outer baffle 3, which can effectively prevent the refractory material outside the valve plate from falling off, further enhancing the durability and service life of the valve plate;

[0030] Secondly, the provision of the reinforcing rib plate 2 significantly improves the strength and stability of the valve plate body 1; the reinforcing rib plate 2 is distributed vertically and horizontally, which not only enhances the overall strength of the valve plate body 1, but also improves its anti-deformation ability, so that it can maintain stable operation in a high temperature environment;

[0031] Then, the design of the connecting flange 4 and the valve plate shaft 5 enables the valve plate body 1 to be accurately and firmly connected together; the middle of the connecting flange 4 is in the shape of a groove, and the square neck part 9 of the valve plate shaft 5 is positioned and installed through the groove part of the flange, and the size of the flange groove is the same as the square neck part of the valve plate shaft, ensuring that the valve plate shaft is tightly connected and does not move; this design not only ensures the sealing performance of the butterfly valve, but also enables the butterfly valve to be flexibly and accurately operated when adjusting the ventilation volume of high-temperature flue gas;

[0032] In addition, a keyway 6 is machined at one end of the valve plate shaft 5, which facilitates the connection with the external transmission control device; through the keyway 6, the external transmission device can drive the valve plate shaft 5 to rotate, thereby realizing the opening and closing operation of the butterfly valve; the valve plate shaft 5 is made of 0Cr25Ni20 material with strong heat resistance, and can operate stably for a long time in a high temperature environment;

[0033] Finally, the valve plate body 1, the reinforcing rib plate 2, the outer baffle plate 3, and the connecting flange 4 are integrally cast. This integrated design enables the various parts of the butterfly valve to be closely combined, further improving the overall strength and stability of the butterfly valve;

[0034] In summary, the utility model realizes the optimization and improvement of the high-temperature butterfly valve in the high-temperature flue gas pipeline of the cement production system through reasonable structural design, improves the service life and stability of the butterfly valve, reduces the maintenance cost, and provides a strong guarantee for the smooth progress of cement production.

[0035] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high-temperature butterfly valve for high-temperature flue gas pipelines in cement production systems, characterized in that: include: A valve plate body (1), a reinforcing rib plate (2), an outer baffle plate (3), a connecting flange (4) and a valve plate shaft (5); the valve plate as a whole is composed of two valve plate bodies (1), the two halves of the valve plate are positioned and connected to the square neck (9) of the valve plate shaft (5) through the groove (10) of the connecting flange (4), and bolts (7) are arranged around the flange to fasten the two halves of the valve plate body; the middle part of the valve plate body (1) is arranged with reinforcing rib plates (2) distributed vertically and horizontally, and an outer baffle plate (3) is arranged in the circumferential direction of the outer side of the valve plate.

2. The high-temperature butterfly valve for high-temperature flue gas pipeline of cement production system according to claim 1 is characterized in that: The valve plate body (1), the reinforcing rib plate (2), the outer baffle plate (3), and the connecting flange (4) are integrally cast to ensure the connection strength between the various components.

3. The high-temperature butterfly valve for high-temperature flue gas pipeline of cement production system according to claim 1 is characterized in that: The material of the valve plate shaft (5) is 0Cr25Ni20, which has excellent heat resistance. A keyway (6) is provided at one end of the valve plate shaft (5) to facilitate connection with external transmission equipment.

4. The high-temperature butterfly valve for high-temperature flue gas pipeline of cement production system according to claim 1, characterized in that: A sealing gasket is provided on the contact surface between the connecting flange (4) and the valve plate body (1) to improve the sealing performance of the device and prevent leakage of high-temperature flue gas.

5. The high-temperature butterfly valve for high-temperature flue gas pipeline of cement production system according to claim 1 is characterized in that: The valve plate shaft (5) is provided with a lifting hole to facilitate transportation and installation using lifting equipment.

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