Linkage control device for air inlet and air outlet of hot blast stove

Abstract

The utility model discloses a hot blast stove air inlet and outlet linkage control device which comprises an air guide shell, a rotary connecting shaft, a first valve plate, a second valve plate, a heat insulation assembly and a driving mechanism, and the air guide shell is provided with a first air opening and a second air opening which are arranged side by side; the rotary connecting shaft sequentially penetrates through the first air opening and the second air opening to be rotationally installed on the air guide shell. The first valve plate is installed on the rotary connecting shaft and located at the first air opening. The second valve plate is installed on the rotary connecting shaft and located at the second air opening. The heat insulation assembly is installed on the air guide shell and arranged outside the rotary connecting shaft in a sleeving mode. The driving mechanism is provided with a rotating shaft, and the driving mechanism is installed on the side, back on to the air guide shell, of the heat insulation assembly. Linkage control of the valve can be achieved, the accuracy of temperature adjustment is improved, meanwhile, a driving mechanism is prevented from being damaged by a high-temperature environment, the reliability of equipment is improved, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to a linkage control device for the air inlet and outlet of a hot blast stove, belonging to the technical field of hot blast stove equipment. Background Technology

[0002] Currently, temperature control is one of the key factors affecting processing quality in industrial heat treatment equipment. To ensure product quality and production efficiency, the inlet and outlet of the hot blast furnace must be precisely adjusted to maintain a stable internal temperature, thus avoiding any impact on product quality and ensuring that customer requirements are met.

[0003] After searching the existing technology, Chinese patent publication number CN218269898U disclosed an automatic air intake control mechanism for an oven, which simultaneously drives the fresh air valve and the exhaust valve through a drive mechanism to improve air intake control. However, during use, it was found that the drive mechanism is close to the high-temperature area and is easily damaged by prolonged heat, affecting the service life and stability of the equipment. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a linkage control device for the air inlet and outlet of a hot blast furnace. It can realize the linkage control of valves, improve the accuracy of temperature regulation, and at the same time avoid damage to the drive mechanism due to high temperature environment, thereby improving the reliability and service life of the equipment.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a hot blast stove inlet and outlet linkage control device, comprising:

[0006] An air guide housing, wherein a first air outlet and a second air outlet are arranged side by side on the air guide housing;

[0007] A rotating connecting shaft is rotatably mounted on the air guide housing, passing sequentially through the first air outlet and the second air outlet.

[0008] A first valve plate is mounted on the rotating connecting shaft and located at the first air outlet;

[0009] The second valve plate is mounted on the rotating connecting shaft and located at the second air outlet;

[0010] A heat insulation component, which is mounted on the air guide housing and sleeved outside the rotating connecting shaft;

[0011] The drive mechanism is provided with a rotating shaft and is mounted on the side of the heat insulation component facing away from the air guide housing. The rotating shaft of the drive mechanism is connected to the rotating connecting shaft for transmission. The drive mechanism is adapted to drive the rotating connecting shaft to rotate so as to drive the first valve plate to open the first air outlet and simultaneously drive the second valve plate to close the second air outlet, or drive the first valve plate to close the first air outlet and simultaneously drive the second valve plate to open the second air outlet.

[0012] Furthermore, a specific structure for an air guide housing is provided, the air guide housing comprising:

[0013] The first air duct has a first ventilation channel that runs through the length direction, and the first ventilation channel forms the first air outlet.

[0014] The second air duct is provided with a second ventilation channel that runs through the length direction, and the second ventilation channel forms the second air outlet.

[0015] A front-end plate, which connects the first air duct and the second air duct and is disposed at the front end of the first air duct and the second air duct;

[0016] A rear end plate, which connects the first air duct and the second air duct and is disposed at the rear end of the first air duct and the second air duct;

[0017] The sidewalls of the first duct and the second duct are provided with shaft holes that cooperate with the rotating connecting shaft.

[0018] Furthermore, both the first duct and the second duct have rectangular cross-sections.

[0019] Furthermore, the front end plate and the rear end plate are provided with a plurality of mounting and fixing holes evenly distributed along their circumference.

[0020] Furthermore, to prevent the first valve plate from becoming stuck on the inner wall of the first air inlet of the air guide housing due to volume changes after high temperature, a preset gap is provided between the outer peripheral edge of the first valve plate and the inner wall of the first air duct of the air guide housing.

[0021] Furthermore, to prevent the second valve plate from becoming stuck on the inner wall of the second air inlet of the air guide housing due to volume changes after high temperature, a preset gap is provided between the outer peripheral edge of the second valve plate and the inner wall of the second air duct of the air guide housing.

[0022] Furthermore, the rotating connecting shaft is on the same straight line as the central axis of the first valve plate and the second valve plate.

[0023] Furthermore, a specific type of drive mechanism is provided, wherein the drive mechanism is a proportional valve.

[0024] Furthermore, the first valve plate and the second valve plate are perpendicular to each other on the rotating connecting shaft.

[0025] By adopting the above technical solution, this utility model has the following beneficial effects:

[0026] In this invention, during operation, the drive mechanism first drives the rotating connecting shaft to rotate. Since the first valve plate and the second valve plate are perpendicular to each other on the rotating connecting shaft, when the first valve plate closes the first air vent, the second valve plate will inevitably open the second air vent, and vice versa. This ensures synchronized switching between the first and second air vents, improves the accuracy of temperature control, reduces temperature fluctuations, and improves product quality. Simultaneously, the drive mechanism is installed on the side of the heat insulation component opposite to the air guide housing, effectively preventing damage caused by high temperatures and improving the durability and reliability of the equipment.

[0027] In addition, both the first and second air ducts have rectangular cross-sections, which facilitates processing and manufacturing and ensures uniform airflow distribution. Multiple mounting holes are evenly distributed on the front and rear plates to facilitate equipment installation. A preset gap is provided between the outer periphery of the first and second valve plates and the inner wall of the air outlet to prevent the first and second valve plates from thermally expanding and jamming due to high temperature.

[0028] In summary, this utility model effectively solves the problems of large temperature fluctuations and easy damage to the drive mechanism through measures such as linkage control and heat insulation protection of the drive mechanism, improves the accuracy and stability of temperature regulation, extends the service life of the equipment, and enhances product quality. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the hot blast stove inlet and outlet linkage control device of this utility model.

[0030] Figure 2 This is a front view of the hot blast stove inlet and outlet linkage control device of this utility model;

[0031] Figure 3 for Figure 2 Cross-sectional view of AA. Detailed Implementation

[0032] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0033] like Figure 1-3 As shown, a hot blast stove inlet and outlet linkage control device includes:

[0034] The air guide housing 1 has a first air outlet and a second air outlet arranged side by side on the air guide housing 1;

[0035] Rotate the connecting shaft 2, which passes through the first air inlet and the second air inlet in sequence and is rotatably mounted on the air guide housing 1.

[0036] First valve plate 3, the first valve plate 3 is installed on the rotating connecting shaft 2 and located at the first air outlet;

[0037] The second valve plate 4 is mounted on the rotating connecting shaft 2 and located at the second air outlet;

[0038] Heat insulation component 5 is installed on air guide housing 1 and sleeved on the outside of rotating connecting shaft 2;

[0039] The drive mechanism 6 is provided with a rotating shaft. The drive mechanism 6 is installed on the side of the heat insulation component 5 facing away from the air guide housing 1. The rotating shaft of the drive mechanism 6 is connected to the rotating connecting shaft 2. The drive mechanism 6 is adapted to drive the rotating connecting shaft 2 to rotate, so as to drive the first valve plate 3 to open the first air outlet and simultaneously drive the second valve plate 4 to close the second air outlet, or drive the first valve plate 3 to close the first air outlet and simultaneously drive the second valve plate 4 to open the second air outlet.

[0040] In this embodiment, as Figure 1-3 As shown, the first valve plate 3 and the second valve plate 4 are perpendicular to each other on the rotating connecting shaft 2. During operation, the drive mechanism 6 first drives the rotating connecting shaft 2 to rotate. Since the first valve plate 3 and the second valve plate 4 are perpendicular to each other on the rotating connecting shaft 2, when the first valve plate 3 closes the first air vent, the second valve plate 4 will inevitably open the second air vent, and vice versa. This ensures synchronized switching between the first and second air vents, improving the accuracy of temperature control, reducing temperature fluctuations, and improving product quality. Simultaneously, the drive mechanism 6 is installed on the side of the heat insulation component 5 opposite to the air guide housing 1, effectively preventing damage caused by high temperatures and improving the durability and reliability of the equipment. The heat insulation component 5 can be made of a high-temperature resistant material with poor thermal conductivity, such as ceramic.

[0041] Specifically, such as Figure 1-3 As shown, the air guide housing 1 includes:

[0042] The first air duct 11 is provided with a first ventilation channel that runs through the length direction, and the first ventilation channel forms a first air outlet.

[0043] The second air duct 12 is provided with a second ventilation channel that runs through the length direction, and the second ventilation channel forms a second air outlet.

[0044] Front end plate 13, the front end plate 13 connects the first air duct 11 and the second air duct 12 and is set at the front end of the first air duct 11 and the second air duct 12;

[0045] Rear end plate 14, the rear end plate 14 connects the first air duct 11 and the second air duct 12 and is located at the rear end of the first air duct 11 and the second air duct 12;

[0046] The sidewalls of the first duct 11 and the second duct 12 are provided with shaft holes that cooperate with the rotating connecting shaft 2.

[0047] Specifically, such as Figure 1 As shown, the cross-sections of the first duct 11 and the second duct 12 are both rectangular.

[0048] Specifically, such as Figure 1 As shown, sixteen mounting holes are evenly arranged along the circumference of the front end plate 13 and the rear end plate 14.

[0049] In this embodiment, as Figure 1 As shown, the first air inlet is the cold air inlet, and the second air inlet is the hot air inlet. When the temperature of the hot air furnace exceeds the required temperature, the hot air inlet is closed and the cold air inlet is opened at the same time to lower the temperature inside the hot air furnace to the required temperature. Conversely, when the temperature of the hot air furnace is lower than the set temperature, the hot air inlet is opened and the cold air inlet is closed at the same time.

[0050] There are sixteen mounting holes on each front end plate 13 and rear end plate 14, and the mounting holes on the front end plate 13 and rear end plate 14 correspond to each other.

[0051] In other embodiments, the cross-sections of the first duct 11 and the second duct 12 may also be circular, elliptical, or other shapes, and the number and distribution of mounting holes on the front end plate 13 and the rear end plate 14 may be adjusted according to actual installation needs.

[0052] Specifically, such as Figure 1-3 As shown, a preset gap is provided between the outer peripheral edge of the first valve plate 3 and the inner wall of the first air duct 11 of the air guide housing 1.

[0053] Specifically, such as Figure 1-3 As shown, a preset gap is provided between the outer peripheral edge of the second valve plate 4 and the inner wall of the second air duct 12 of the air guide housing 1.

[0054] Specifically, such as Figure 1-3 As shown, the rotating connecting shaft 2 is on the same straight line as the central axis of the first valve plate 3 and the second valve plate 4.

[0055] Specifically, such as Figure 1 As shown, the drive mechanism 6 is a proportional valve.

[0056] In this embodiment, as Figure 1-3As shown, the preset gap between the first valve plate 3 and the inner wall of the first air outlet, and the preset gap between the second valve plate 4 and the inner wall of the second air outlet, make it less likely to jam at high temperatures, ensuring that the first valve plate 3 and the second valve plate 4 rotate smoothly. By controlling the output angle of the proportional valve, the rotating connecting shaft 2 is driven to rotate, thereby realizing the linkage opening and closing of the first valve plate 3 and the second valve plate 4.

[0057] In other embodiments, the drive mechanism 6 may also employ other drive methods such as a motor or cylinder.

[0058] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A linkage control device for the inlet and outlet of a hot blast stove, characterized in that, include: The air guide housing (1) has a first air outlet and a second air outlet arranged side by side. Rotary connecting shaft (2) is rotatably mounted on the air guide housing (1) by passing through the first air outlet and the second air outlet in sequence. The first valve plate (3) is mounted on the rotating connecting shaft (2) and located at the first air outlet; The second valve plate (4) is mounted on the rotating connecting shaft (2) and located at the second air outlet; A heat insulation component (5) is installed on the air guide housing (1) and sleeved outside the rotating connecting shaft (2); A drive mechanism (6) is provided with a rotating shaft. The drive mechanism (6) is installed on the side of the heat insulation component (5) facing away from the air guide housing (1). The rotating shaft of the drive mechanism (6) is connected to the rotating connecting shaft (2) for transmission. The drive mechanism (6) is adapted to drive the rotating connecting shaft (2) to rotate so as to drive the first valve plate (3) to open the first air outlet and simultaneously drive the second valve plate (4) to close the second air outlet, or drive the first valve plate (3) to close the first air outlet and simultaneously drive the second valve plate (4) to open the second air outlet.

2. The hot blast stove inlet and outlet linkage control device according to claim 1, characterized in that, The air guide housing (1) includes: The first air duct (11) is provided with a first ventilation channel that runs through the length direction, and the first ventilation channel forms the first air outlet; The second air duct (12) is provided with a second ventilation channel that runs through the length direction, and the second ventilation channel forms the second air outlet; Front end plate (13), the front end plate (13) connects the first air duct (11) and the second air duct (12) and is disposed at the front end of the first air duct (11) and the second air duct (12); The rear end plate (14) connects the first air duct (11) and the second air duct (12) and is disposed at the rear end of the first air duct (11) and the second air duct (12); The sidewalls of the first air duct (11) and the second air duct (12) are provided with shaft holes that cooperate with the rotating connecting shaft (2).

3. The hot blast stove inlet and outlet linkage control device according to claim 2, characterized in that, Both the first duct (11) and the second duct (12) have rectangular cross-sections.

4. The hot blast stove inlet and outlet linkage control device according to claim 2, characterized in that, The front end plate (13) and the rear end plate (14) are provided with a plurality of mounting and fixing holes evenly distributed along their circumference.

5. The hot blast stove inlet and outlet linkage control device according to claim 2, characterized in that, A preset gap is provided between the outer peripheral edge of the first valve plate (3) and the inner wall of the first air duct (11) of the air guide housing (1).

6. The hot blast stove inlet and outlet linkage control device according to claim 2, characterized in that, A preset gap is provided between the outer peripheral edge of the second valve plate (4) and the inner wall of the second air duct (12) of the air guide housing (1).

7. The hot blast stove inlet and outlet linkage control device according to claim 1, characterized in that, The rotating connecting shaft (2) is on the same straight line as the central axis of the first valve plate (3) and the second valve plate (4).

8. The hot blast stove inlet and outlet linkage control device according to claim 1, characterized in that, The drive mechanism (6) is a proportional valve.

9. The hot blast stove inlet and outlet linkage control device according to claim 1, characterized in that, The first valve plate (3) and the second valve plate (4) are perpendicular to each other on the rotating connecting shaft (2).

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