A switching device for hot blast stove change

Abstract

The utility model relates to the field of hot -blast stove discloses a kind of conversion device for hot -blast stove change furnace, including several housings, several the housing is respectively arranged in the top surface of two hot -blast stove bodies, the top surface of the hot -blast stove body is provided with two valve bodies, the valve body extends to hot -blast stove body, the housing is sleeved in the outer wall of valve body, the inner wall of the housing is fixed with metal frame, the metal frame and housing inner wall form heat dissipation passage, the inner wall of the metal frame is fixed with several connecting blocks, the connecting block is in contact with valve body, buffering cavity is formed between the connecting block and metal frame. In the utility model, the synergies of metal frame, heat dissipation passage, connecting block, buffer cavity, deflector, air outlet and fan, air is formed directional flow in heat dissipation passage, effectively take away the heat generated by valve body under high temperature working condition, to avoid valve body failure or damage due to overheating, guarantee the normal work and sealing performance of valve body.

Description

Technical Field

[0001] This utility model relates to the technical field of hot blast stoves, specifically to a conversion device for changing the furnace in a hot blast stove. Background Technology

[0002] A hot blast stove is a type of boiler. It is a device that uses the heat generated by fuel combustion to exchange heat with the outside air to heat the air and produce hot air. As a type of thermal power machinery, hot blast stoves have become a replacement product for electric heating sources and traditional steam power sources in many industries.

[0003] The hot blast stove switching device, commonly known as the "hot blast valve group" or "stove switching system," mainly consists of key valves such as hot blast valves, cold blast valves, flue valves, and gas valves, as well as an automated control system. Its working principle can be divided into three steps: Preparation stage: After the hot blast stove to be put into use completes heat storage, the control system first opens the cold blast valve of that stove, allowing cold air to enter the stove for preheating; Switching stage: The hot blast valve of the stove to be put into use is gradually opened, while the hot blast valve of the stove currently in operation is gradually closed to ensure stable air supply pressure and temperature to the blast furnace, avoiding sudden changes; Pressure relief stage: For hot blast stoves that have stopped supplying air, their cold blast valves are first closed, then the flue valves are opened to discharge residual gas and flue gas from the furnace, preparing for the next cycle of combustion and heat storage.

[0004] In the existing technology, no cooling and heat dissipation mechanisms are set around each valve body, which leads to the following disadvantages: Under high temperature and high pressure environment, the valve core, valve seat and other components of the valve body wear out quickly, and the valve body is prone to failure or damage due to overheating, thereby reducing the service life of the valve body. Regular shutdown and maintenance are required, which not only increases labor and spare parts costs, but may also affect the continuous production of the hot air furnace. Utility Model Content

[0005] The purpose of this utility model is to provide a conversion device for hot blast stoves to solve the problem that under high temperature and high pressure environments, the valve core, valve seat and other components of the valve body wear out quickly, and the valve body is prone to failure or damage due to overheating, which reduces the service life of the valve body and requires regular shutdown for maintenance, which not only increases labor and spare parts costs, but may also affect the continuous production of the hot blast stove.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a conversion device for changing furnaces in a hot blast stove, comprising a plurality of housings, the plurality of housings being respectively disposed on the top surface of two hot blast stove bodies, two valve bodies being disposed on the top surface of the hot blast stove body, the valve bodies extending into the hot blast stove body, the housings being sleeved on the outer wall of the valve bodies, a metal frame being fixed to the inner wall of the housings, a heat dissipation channel being formed between the metal frame and the inner wall of the housings, a plurality of connecting blocks being fixed to the inner wall of the metal frame, the connecting blocks contacting the valve bodies, a buffer cavity being formed between the connecting blocks and the metal frame, guide plates being fixed at the four corners of the inner wall of the housings, an air inlet being opened on the front side of the housings, two air outlets being opened on the rear side of the housings, and a fan being fixed to the inner wall of the air inlet.

[0007] Preferably, the top surface of the hot air furnace body is provided with a plurality of threaded grooves, and two mounting blocks are fixed on both the left and right sides of the shell. The top surface of the mounting blocks is provided with positioning holes, which correspond to the threaded grooves. Fixing bolts are inserted into the inner wall of the positioning holes, and the fixing bolts are threadedly connected to the threaded grooves.

[0008] Preferably, a dust cover is fixed to the front side of the housing, and the dust cover corresponds to the fan.

[0009] Preferably, a connecting pipe is fixedly connected between the two hot air furnace bodies, and a flue pipe is fixedly connected to the rear side of the hot air furnace body.

[0010] Preferably, an exhaust pipe is fixedly connected to the top surface of the hot air furnace body, and an insulation sleeve is fitted on the outer wall of the exhaust pipe.

[0011] Preferably, a feed inlet is provided on the front side of the hot air furnace body, and a protective plate is rotatably connected to the inner wall of the feed inlet via a hinge. A limit plate is rotatably provided on the protective plate, and a snap-fit ​​seat is fixed on the feed inlet, with the limit plate snapped into the snap-fit ​​seat.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. Through the coordinated action of the metal frame, heat dissipation channel, connecting block, buffer chamber, guide plate, air outlet and fan, the air is directed to flow in the heat dissipation channel, effectively removing the heat generated by the valve body under high temperature conditions, thereby preventing the valve body from failing or being damaged due to overheating, ensuring the normal operation and sealing performance of the valve body, and thus extending the service life of the valve body, ensuring the normal operation and sealing performance of the valve body, and ensuring the reliable operation of the hot blast stove body furnace changing conversion device;

[0014] Second, by using fixing bolts to connect the positioning holes and threaded grooves, the shell and the hot blast stove body are easily installed and securely fixed, ensuring that the valve body will not shift during use. The dust cover prevents dust and debris from entering the blower, avoiding damage caused by impurities and ensuring the normal operation and heat dissipation of the blower, thus guaranteeing the effectiveness of the entire heat dissipation system. The connecting pipe between the two hot blast stove bodies helps balance the pressure of the two stoves during furnace replacement, facilitating a smooth furnace replacement operation. Simultaneously, the flue pipe is used to discharge the flue gas generated during combustion and heat preservation in the hot blast stove body, ensuring the normal combustion process within the hot blast stove body.

[0015] Third, the insulation jacket reduces heat loss from the high-temperature gas in the outlet pipe, improves the temperature and energy utilization rate of the hot air, and reduces energy consumption. Fuel and other materials can be easily added to the hot air furnace body through the feed inlet. The protective plate is rotatably connected to the inner wall of the feed inlet via hinges. A limiting plate is rotatably mounted on the protective plate and can be engaged in a locking seat. When no material is being fed, the protective plate can close the feed inlet to prevent hot air and dust from escaping, thus providing protection. Simultaneously, the cooperation between the limiting plate and the locking seat ensures that the protective plate is securely closed. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an embodiment.

[0017] Figure 2 This is a breakdown diagram of an embodiment.

[0018] Figure 3 This is a schematic diagram showing the disassembly of the connecting block and mounting block in an embodiment.

[0019] Figure 4 For the example Figure 2 Enlarged diagram of point A in the middle.

[0020] In the diagram: 1. Shell; 2. Hot air furnace body; 3. Valve body; 4. Metal frame; 5. Heat dissipation channel; 6. Connecting block; 7. Buffer chamber; 8. Guide plate; 9. Air inlet; 901. Air outlet; 10. Fan; 11. Threaded groove; 12. Mounting block; 13. Positioning hole; 14. Fixing bolt; 15. Dust cover; 16. Connecting pipe; 17. Smoke outlet pipe; 18. Air outlet pipe; 19. Insulation sleeve; 20. Feed inlet; 21. Protective plate; 22. Limiting plate; 23. Snap-fit ​​seat. Detailed Implementation

[0021] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] like Figures 1-4As shown, a conversion device for changing the furnace in a hot blast stove includes several housings 1, which are respectively disposed on the top surface of two hot blast stove bodies 2. Two valve bodies 3 are disposed on the top surface of each hot blast stove body 2. Each hot blast stove body 2 also includes a microcontroller (STM32). A temperature sensor is fixed to the top surface of each housing 1, and the microcontroller is electrically connected to the temperature sensor. The sensing end of the temperature sensor is in contact with the valve body 3, which extends into the hot blast stove body 2. The housings 1 are fitted onto the outer wall of the valve bodies 3. A metal frame 4 is fixed to the inner wall of each housing 1, forming a heat dissipation channel 5 between the metal frame 4 and the inner wall of the housing 1. Several connecting blocks 6 are fixed to the inner wall of the metal frame 4. Both the connecting block 6 and the connecting block 3 are made of copper. The connecting block 6 is in contact with the valve body 3. A buffer cavity 7 is formed between the connecting block 6 and the metal frame 4. A guide plate 8 is fixed at each of the four corners of the inner wall of the housing 1. An air inlet 9 is opened on the front side of the housing 1. Two air outlets 901 are opened on the rear side of the housing 1. A fan 10 is fixed on the inner wall of the air inlet 9. The fan 10 is a high-temperature insulated motor fan. Several threaded grooves 11 are opened on the top surface of the hot air furnace body 2. Two mounting blocks 12 are fixed on the left and right sides of the housing 1. A positioning hole 13 is opened on the top surface of the mounting block 12. The positioning hole 13 corresponds to the threaded groove 11. A fixing bolt 14 is inserted into the inner wall of the positioning hole 13. The fixing bolt 14 is threadedly connected to the threaded groove 11.

[0023] During use, when the valve body 3 is in working condition, the heat generated during its operation is conducted to the metal frame 4 through the metal connecting block 6. During this process, excess heat will accumulate in the buffer chamber 7, and then be absorbed by the metal frame 4 and further conducted to the heat dissipation channel 5.

[0024] At this time, the temperature sensor will monitor the temperature of valve body 3 in real time. When the temperature of valve body 3 exceeds the set threshold, the temperature sensor will transmit the signal to the blower 10 through the microcontroller. Then the blower 10 will start and send the cold air in the environment into the heat dissipation channel 5 through the air inlet 9. Driven by the airflow, the heat carried by the metal frame 4 in the heat dissipation channel 5 will be efficiently discharged through the two air outlets 901 under the guidance of the guide plate 8. With the help of the continuous airflow of the blower 10, the temperature of valve body 3 is effectively controlled, ensuring that valve body 3 is always in the safe operating temperature range.

[0025] Through the coordinated action of the metal frame 4, heat dissipation channel 5, connecting block 6, buffer chamber 7, guide plate 8, air outlet 901, and fan 10, air is directed to flow in a specific direction within the heat dissipation channel 5. This effectively removes the heat generated by the valve body 3 under high-temperature conditions, preventing the valve body 3 from failing or being damaged due to overheating. This ensures the normal operation and sealing performance of the valve body, thereby extending its service life and guaranteeing the reliable operation of the furnace changing device in the hot blast stove body 2. The fixing bolts 14 pass through the positioning hole 13 and are threaded into the threaded groove 11, enabling convenient installation and secure fixation of the shell 1 and the hot blast stove body 2, ensuring that the valve body 3 will not shift during use.

[0026] like Figures 1-4 As shown, a dust cover 15 is fixed to the front side of the shell 1, and the dust cover 15 corresponds to the blower 10. A connecting pipe 16 is fixed between the two hot air furnace bodies 2. A smoke outlet pipe 17 is fixed to the rear side of the hot air furnace body 2. An air outlet pipe 18 is fixed to the top surface of the hot air furnace body 2. An insulation sleeve 19 is fitted on the outer wall of the air outlet pipe 18. A feed inlet 20 is opened on the front side of the hot air furnace body 2. A protective plate 21 is rotatably connected to the inner wall of the feed inlet 20 through a hinge. A limit plate 22 is rotatably provided on the protective plate 21. A snap-fit ​​seat 23 is fixed on the feed inlet 20. The limit plate 22 is snapped into the snap-fit ​​seat 23.

[0027] During use, the dust cover 15 prevents dust and debris from entering the blower 10, avoiding damage caused by impurities and ensuring the normal operation and heat dissipation of the blower 10, thereby ensuring the effectiveness of the entire heat dissipation system. The connecting pipe 16 connecting the two hot blast stove bodies 2 can balance the pressure of the two stoves during the stove changing process, facilitating the smooth operation of the stove changing. At the same time, the flue pipe 17 is used to discharge the flue gas generated by the hot blast stove body 2 during combustion and heat preservation, ensuring the normal operation of the combustion process inside the hot blast stove body 2.

[0028] The insulation sleeve 19 reduces heat loss from the high-temperature gas in the outlet pipe 18, improving the temperature and energy utilization of the hot air and reducing energy consumption. The feed inlet 20 facilitates the addition of fuel and other materials to the hot air furnace body 2. The protective plate 21 is rotatably connected to the inner wall of the feed inlet 20 via a hinge. The limiting plate 22 is rotatably mounted on the protective plate 21 and can be engaged in the locking seat 23. When no material is being fed, the protective plate 21 can close the feed inlet 20, preventing the escape of hot air, dust, etc., thus providing protection. Simultaneously, the cooperation between the limiting plate 22 and the locking seat 23 ensures that the protective plate 21 is securely closed.

[0029] The housing 1 has two valve bodies 3, the left one is a hot air valve and the right one is a cold air valve, and a flue valve is installed on the smoke outlet pipe 17.

[0030] 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 technical scope 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 conversion device for changing the furnace in a hot blast stove, comprising a plurality of housings (1), wherein the plurality of housings (1) are respectively disposed on the top surface of two hot blast stove bodies (2), characterized in that, Two valve bodies (3) are provided on the top surface of the hot air furnace body (2). The valve bodies (3) extend into the hot air furnace body (2). The shell (1) is fitted on the outer wall of the valve body (3). A metal frame (4) is fixed on the inner wall of the shell (1). A heat dissipation channel (5) is formed between the metal frame (4) and the inner wall of the shell (1). Several connecting blocks (6) are fixed on the inner wall of the metal frame (4). The connecting blocks (6) are in contact with the valve body (3). A buffer cavity (7) is formed between the connecting blocks (6) and the metal frame (4). A guide plate (8) is fixed at each of the four corners of the inner wall of the shell (1). An air inlet (9) is opened on the front side of the shell (1). Two air outlets (901) are opened on the rear side of the shell (1). A fan (10) is fixed on the inner wall of the air inlet (9).

2. The conversion device for hot blast stove changing according to claim 1, characterized in that: The hot air furnace body (2) has several threaded grooves (11) on its top surface. Two mounting blocks (12) are fixed on both the left and right sides of the shell (1). The mounting blocks (12) have positioning holes (13) on their top surfaces. The positioning holes (13) correspond to the threaded grooves (11). Fixing bolts (14) are inserted into the inner wall of the positioning holes (13). The fixing bolts (14) are threadedly connected to the threaded grooves (11).

3. The conversion device for hot blast stove changing according to claim 2, characterized in that: A dust cover (15) is fixed to the front side of the housing (1), and the dust cover (15) corresponds to the fan (10).

4. The conversion device for hot blast stove changing according to claim 2, characterized in that: A connecting pipe (16) is fixed between the two hot air furnace bodies (2), and a flue pipe (17) is fixed to the rear side of the hot air furnace body (2).

5. A conversion device for hot blast stove changing according to claim 4, characterized in that: The top surface of the hot air furnace body (2) is connected to and fixed with an air outlet pipe (18), and the outer wall of the air outlet pipe (18) is fitted with a heat insulation sleeve (19).

6. The conversion device for hot blast stove changing according to claim 5, characterized in that: The hot air furnace body (2) has a feed inlet (20) on the front side. The inner wall of the feed inlet (20) is rotatably connected to a protective plate (21) via a hinge. A limit plate (22) is rotatably provided on the protective plate (21). A snap-fit ​​seat (23) is fixed on the feed inlet (20). The limit plate (22) is snapped into the snap-fit ​​seat (23).

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