Mechanical air cooling controller

Abstract

This utility model discloses a mechanical air-cooled controller, relating to the field of airflow control valves. The utility model includes an installation duct, on the inner side of which a baffle plate is rotatably mounted via a shaft. A drive assembly is mounted on the outer side of the installation duct, opposite to the shaft position. The drive assembly includes a mounting base, and a reduction gearbox is mounted on the front side of the mounting base. The output end of the reduction gearbox is keyed to the shaft. A servo motor is mounted above the reduction gearbox, and its output end is connected to the input end of the reduction gearbox via a coupling. This utility model solves the problem of traditional airflow valves not allowing for intuitive observation of the opening degree through a mechanical dial and pointer. Operators can directly read the baffle plate position via a percentage scale, without relying on external sensors or complex calculations, significantly improving control efficiency and accuracy.

Description

Technical Field

[0001] This utility model relates to the field of air volume control valves, specifically a mechanical air-cooled controller. Background Technology

[0002] Instrument air cooling devices are key equipment that use air as a cooling medium to cool and dehumidify the air source of industrial instruments. Its core uses an aluminum alloy plate-fin heat exchanger to increase the contact area and a fan to enhance the heat exchange efficiency through forced ventilation. It can effectively condense and separate moisture, prevent pipeline icing, and ensure the stable operation of pneumatic valves and instruments. The device has a compact structure, requires no water source, is easy to maintain, and is environmentally friendly. It is widely used in hydraulic systems, pneumatic control, and high-altitude and cold environments in industries such as petroleum, chemical, and power.

[0003] Currently, instrument air cooling devices typically use airflow control valves to control the flow rate of instrument air. However, a problem exists in practical use: when the traditional airflow control valve is closed and connected to the instrument air delivery pipeline via a flange, it is difficult for operators to clearly observe the current flow rate of the instrument air through the cooling device itself. This undoubtedly reduces the ease of operation for operators. Therefore, the inventors urgently need to design an airflow control valve that allows for clear observation of the current instrument airflow, thereby improving the ease of use for operators and enhancing its functionality and practicality. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a mechanical air-cooled controller to solve the technical problem of inconvenient observation of the opening and closing degree of the air volume control valve in the instrument air cooling device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mechanical air-cooled controller, including a mounting duct, a baffle plate rotatably mounted on the inner side of the mounting duct via a shaft, a drive assembly mounted on the outer side of the mounting duct opposite to the shaft, the drive assembly including a mounting base, a reduction gearbox mounted on the front side of the mounting base, the output end of the reduction gearbox being keyed to the shaft, a servo motor mounted above the reduction gearbox, and the output end of the servo motor being connected to the input end of the reduction gearbox via a coupling; The distal end of the shaft passes through the reduction gearbox and is fixedly mounted with a dial. A pointer is fixedly mounted on one side of the reduction gearbox, and the pointer points to any mark on the dial.

[0006] By adopting the above technical solution and integrating the drive components with the visual dial, the problem that the opening degree of traditional air volume control valves cannot be intuitively observed is solved. The servo motor drives the reduction gearbox through the coupling, and then drives the shaft through the keyed connection to precisely control the rotation angle of the baffle plate, thereby realizing the adjustment of air volume.

[0007] Furthermore, the surface of the dial is divided into a marking area with an included angle of 90° and a blank area with an included angle of 270°. The beginning of the marking area is marked as "fully closed" and the end of the marking area is marked as "fully open". Several percentage scale lines are engraved between the fully closed and fully open points. The percentage reading when the pointer points to the scale line is the current degree of opening of the air volume control valve.

[0008] By adopting the above technical solution, the 90° marking area of ​​the dial directly links the mechanical rotation range with the percentage of air volume opening. The "fully closed" marking at the beginning and the "fully open" marking at the end are clear, and the middle scale line provides a refined reading, avoiding the misjudgment problem of traditional valve opening.

[0009] Furthermore, the servo motor is electrically connected to an external power source via a controller, and the shaft is rotatably connected to the mounting duct via bearings.

[0010] By adopting the above technical solution, remote automated control is supported, avoiding the inconvenience and errors of manual operation. It is especially suitable for harsh environments or distributed control systems. At the same time, the shaft and the installation duct are connected by bearing rotation, which reduces frictional resistance and wear.

[0011] Furthermore, the air inlet and outlet of the installed air duct are both welded with flanges for connection to external air duct flanges.

[0012] By adopting the above technical solution, the flanges welded at the air inlet and outlet of the air duct adopt standardized interface settings, which can be directly and quickly connected to the existing air duct system without additional pipeline modification, significantly reducing installation costs and engineering complexity.

[0013] Furthermore, the reduction gearbox includes a worm gear, one side of which is engaged with a worm wheel, which is coaxially and keyed to the shaft.

[0014] By adopting the above technical solution, the meshing transmission structure of the worm gear and worm wheel in the reduction box has a natural self-locking function, which can prevent the position of the baffle plate from drifting due to airflow impact or vibration, and ensure the long-term stability of the set airflow.

[0015] Furthermore, the inner wall of the installation duct is provided with a sealing mechanism, which includes a limiting plate. When the throttling plate is in a fully closed state, the limiting plate abuts against the throttling plate, and the limiting plate is used to limit the maximum rotation position of the throttling plate.

[0016] By adopting the above technical solution, the limiting plate of the sealing mechanism accurately defines the fully closed position of the baffle plate through mechanical hard limiting, avoiding the problem of poor sealing caused by transmission error or control deviation, and ensuring the reliability of the zero airflow state.

[0017] Furthermore, the limiting piece has an arc-shaped structure, and a sealing strip is affixed to the intercepting plate at a position opposite to the limiting piece.

[0018] By adopting the above technical solution, the arc-shaped limiting plate structure is highly consistent with the rotation trajectory of the interceptor plate, which expands the sealing contact area and improves the sealing uniformity in the fully closed state.

[0019] In summary, the present invention has the following main advantages: 1. This utility model solves the problem that the opening degree of traditional air volume valves cannot be directly observed by means of a mechanical dial and pointer. Operators can directly read the position of the baffle plate by the percentage scale, without relying on external sensors or complex calculations, which significantly improves the efficiency and accuracy of control. 2. This utility model uses a drive component, which combines a servo motor with a worm gear reduction structure, to achieve high-precision angle control and has a self-locking function to prevent airflow disturbance from causing opening drift and to ensure airflow stability. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram showing the position and structure of the interceptor plate of this utility model; Figure 3 This is a schematic diagram showing the position and structure of the dial of this utility model; Figure 4 This is a schematic diagram of the internal structure of the gearbox of this utility model; Figure 5 This utility model Figure 2 A magnified structural diagram of point A in the middle.

[0021] In the diagram: 1. Installed air duct; 2. Flange; 3. Cut-off plate; 4. Shaft; 5. Drive assembly; 501. Mounting base; 502. Gearbox; 5021. Worm gear; 5022. Worm wheel; 503. Dial; 504. Pointer; 505. Servo motor; 6. Sealing mechanism; 601. Limiting plate; 602. Sealing strip. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In this embodiment: A mechanical air-cooled controller, such as Figure 1-5As shown, the device includes a mounting duct 1. A baffle plate 3 is rotatably mounted on the inner side of the mounting duct 1 via a shaft 4. A drive assembly 5 is mounted on the outer side of the mounting duct 1 at a position opposite to the shaft 4. The drive assembly 5 includes a mounting base 501. A reduction gearbox 502 is mounted on the front side of the mounting base 501. The output end of the reduction gearbox 502 is keyed to the shaft 4. A servo motor 505 is mounted on the top of the reduction gearbox 502. The output end of the servo motor 505 is connected to the input end of the reduction gearbox 502 via a coupling. The distal end of the shaft 4 passes through the reduction gearbox 502 and is fixedly mounted with a dial 503. A pointer 504 is fixedly mounted on one side of the reduction gearbox 502, and the pointer 504 points to any mark on the dial 503. By integrating the drive component 5 and the visual dial 503, the problem of the traditional air volume control valve not being able to intuitively observe the opening is solved. The servo motor 505 drives the reduction gearbox 502 through a coupling, and then drives the shaft 4 to precisely control the rotation angle of the baffle 3 through a keyed connection, thereby realizing the adjustment of the air volume. At the same time, the dial 503 fixed at the distal end of the shaft and the pointer 504 on the side of the reduction gearbox form a mechanical indicating system, which allows the operator to directly read the valve opening without relying on external sensors, significantly improving the convenience of control and the functionality of the equipment, especially suitable for high-altitude or remote installation scenarios.

[0024] See Figure 3 The surface of the dial 503 is divided into a marking area with an included angle of 90° and a blank area of ​​270°. The beginning of the marking area is marked "fully closed" and the end of the marking area is marked "fully open". Several percentage scale lines are engraved between the fully closed and fully open points. The percentage reading of the scale line pointed to by the pointer 504 is the current opening degree of the air volume control valve. The 90° marking area of ​​the dial 503 directly links the mechanical rotation range with the percentage of air volume opening. The "fully closed" marking at the beginning and the "fully open" marking at the end are clear, and the middle scale lines provide a fine reading, avoiding the misjudgment problem of traditional valve opening. At the same time, combined with the self-locking characteristics of worm gear transmission, it ensures the stability and repeatability of the opening indication, and is suitable for industrial scenarios that require frequent adjustment and have high requirements for air volume stability.

[0025] See Figure 3 , Figure 4 The servo motor 505 is electrically connected to an external power supply via a controller. The shaft 4 is rotatably connected to the mounting duct 1 via bearings, supporting remote automated control and avoiding the inconvenience and errors of manual operation. It is especially suitable for harsh environments or distributed control systems. At the same time, the rotatable connection between the shaft 4 and the mounting duct 1 via bearings reduces frictional resistance and wear, ensuring the smoothness and durability of the baffle plate 3 during long-term operation, reducing maintenance requirements. Furthermore, the bearing sealing design prevents dust intrusion and extends the service life of the equipment.

[0026] See Figure 1 , Figure 2Flanges 2 are welded to both the air inlet and outlet of the air duct 1 for connection with external air duct flanges. The flanges 2 welded to the air inlet and outlet of the air duct 1 adopt standardized interface settings, which can be directly and quickly connected to the existing air duct system without additional pipeline modification, significantly reducing installation costs and engineering complexity. At the same time, the flange connection has high sealing performance and mechanical strength, which can withstand the working pressure of the instrument air system, prevent the interface leakage from causing air volume loss, and ensure the overall energy efficiency and operational reliability of the system.

[0027] See Figure 4 The reduction gearbox 502 includes a worm gear 5021, and a worm wheel 5022 meshes with one side of the worm gear 5021. The worm wheel 5022 is coaxially keyed and fixed to the shaft 4. The meshing transmission structure of the worm gear 5021 and the worm wheel 5022 in the reduction gearbox 502 has a natural self-locking function, which can prevent the position of the baffle 3 from drifting due to airflow impact or vibration, and ensure the long-term stability of the set airflow. At the same time, the worm gear transmission ratio is large, which can convert the high-speed rotation of the servo motor 505 into the low-speed, high-torque output of the shaft 4, so as to realize the fine adjustment of the baffle, which is especially suitable for the high-precision airflow control requirements of large-diameter air ducts.

[0028] See Figure 2 , Figure 5 The inner wall of the installation duct 1 is provided with a sealing mechanism 6, which includes a limiting plate 601. When the throttling plate 3 is in a fully closed state, the limiting plate 601 abuts against the throttling plate 3. The limiting plate 601 is used to limit the maximum rotation position of the throttling plate 3. The limiting plate 601 of the sealing mechanism 6 precisely defines the fully closed position of the throttling plate 3 through mechanical hard limiting, avoiding the problem of poor sealing caused by transmission error or control deviation, and ensuring the reliability of the zero air volume state. At the same time, the abutting setting of the limiting plate 601 and the throttling plate 3 has a simple structure and does not require additional power, which enhances the fault safety of the system. Even when the power is cut off or the drive fails, it can still maintain a sealed state and prevent media leakage.

[0029] See Figure 5 The limiting plate 601 has an arc-shaped structure, and a sealing strip 602 is attached to the flow cutter 3 at the position opposite to the limiting plate 601. The arc-shaped limiting plate 601 structure is highly consistent with the rotation trajectory of the flow cutter 3, which expands the sealing contact area and improves the sealing uniformity in the fully closed state. At the same time, the sealing strip 602 attached to the flow cutter is made of elastic material, which can deform and fill the micro gaps when the limiting plate is pressed, further enhancing the sealing effect, preventing high-pressure air leakage, and ensuring that the air tightness of the instrument air system meets strict industrial standards.

[0030] The implementation principle of this embodiment is as follows: After receiving the control signal, the servo motor 505 rotates and transmits the power to the reduction box 502 through the coupling. The worm gear 5021 in the reduction box drives the worm wheel 5022 to reduce speed and increase torque and change the direction of power. The worm wheel drives the shaft 4 to rotate precisely in the installation duct 1 through the key connection. The shaft drives the baffle 3 on it to rotate, thereby changing the cross-sectional area of ​​the air duct to adjust the air volume. At the same time, the scale 503 fixed at the far end of the shaft rotates synchronously with the shaft. The percentage scale on its surface and the pointer 504 fixed on the reduction box produce relative displacement, thereby converting the mechanical opening degree into a visual air volume opening degree reading, so that the operator can remotely and intuitively monitor it. When the baffle rotates to the fully closed position, the sealing strip 602 attached to it is tightly pressed with the arc-shaped limiting piece 601 welded to the inner wall of the air duct to ensure a seal. The entire device is connected to the instrument air duct through the flange 2 at its air inlet and outlet, forming a compact, intuitive, and well-sealed air volume control unit.

[0031] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A mechanical air-cooled controller, characterized in that: The system includes an installation duct (1), on which a baffle plate (3) is rotatably mounted via a shaft (4) on the inner side. A drive assembly (5) is mounted on the outer side of the installation duct (1) and opposite to the shaft (4). The drive assembly (5) includes a mounting base (501), on which a reduction gearbox (502) is mounted. The output end of the reduction gearbox (502) is keyed to the shaft (4). A servo motor (505) is mounted above the reduction gearbox (502), and the output end of the servo motor (505) is connected to the input end of the reduction gearbox (502) via a coupling. The distal end of the shaft (4) passes through the reduction gearbox (502) and is fixedly provided with a dial (503). A pointer (504) is fixedly provided on one side of the reduction gearbox (502), and the pointer (504) points to any mark on the dial (503).

2. The mechanical air-cooled controller according to claim 1, characterized in that: The surface of the dial (503) is divided into a marking area with an included angle of 90° and a blank area with an included angle of 270°. The beginning of the marking area is marked as "fully closed" and the end of the marking area is marked as "fully open". Several percentage scale lines are engraved between the fully closed and fully open points. The pointer (504) points to the scale line and the percentage reading is the current degree of opening of the air volume control valve.

3. The mechanical air-cooled controller according to claim 1, characterized in that: The servo motor (505) is electrically connected to an external power source via a controller, and the shaft (4) is rotatably connected to the mounting duct (1) via a bearing.

4. The mechanical air-cooled controller according to claim 1, characterized in that: The air inlet and outlet of the installation duct (1) are both welded with flanges (2) for connection with external air duct flanges.

5. The mechanical air-cooled controller according to claim 1, characterized in that: The reduction gearbox (502) includes a worm gear (5021), and a worm wheel (5022) is engaged with one side of the worm gear (5021). The worm wheel (5022) is coaxially keyed and fixed with the shaft (4).

6. The mechanical air-cooled controller according to claim 1, characterized in that: The inner wall of the installation duct (1) is provided with a sealing mechanism (6), which includes a limiting piece (601). When the throttling plate (3) is in a fully closed state, the limiting piece (601) abuts against the throttling plate (3). The limiting piece (601) is used to limit the maximum rotation position of the throttling plate (3).

7. The mechanical air-cooled controller according to claim 6, characterized in that: The limiting piece (601) has an arc-shaped structure, and a sealing strip (602) is attached to the intercepting plate (3) at the position opposite to the limiting piece (601).

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