Air door adjusting device for automatic temperature adjusting system
By using a mechanical damper adjustment device, the problem of high precision requirements for damper adjustment devices in automatic temperature control systems under high temperature and high dust environments is solved, achieving stable temperature control and cost reduction.
Patent Information
- Application Number
- CN202520475075.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-18
AI Technical Summary
In existing automatic temperature control systems, the damper adjustment device requires high precision in high-temperature and high-dust environments, resulting in high processing and installation costs. Furthermore, its precision decreases after prolonged operation, affecting the stability of temperature control.
The damper adjustment device with a mechanical structure uses a bracket and mounting plate connected to the air duct by an electric actuator, combined with a bushing and damper plate, to achieve mechanical positioning and manual adjustment of the damper, reducing the requirements for machining accuracy and enhancing adaptability and reliability.
It achieves stable adjustment of the damper in high temperature and high dust environment, improves positioning accuracy and operational reliability, reduces processing and installation costs, and has greater applicability.
Smart Images
Figure CN223794672U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of damper control technology, specifically a damper adjustment device for an automatic temperature control system. Background Technology
[0002] The damper regulation in the automatic temperature control system is one of its core functions. It mainly regulates the air supply temperature by controlling the opening and closing of the damper to meet the set temperature requirements. In the existing technology, when the raw materials are heated, the volatiles in the raw materials are released and burned through the fire channel in the calcining furnace. Through multi-layer combustion, the product is discharged from the bottom of the calcining furnace. The quality of the product produced in this process is closely related to the temperature of the calcining furnace. The real-time temperature control of the calcining furnace is achieved by the entire set of cold air dampers. Data feedback is obtained by measuring the cold air dampers through a real-time temperature measurement system, thereby adjusting the opening degree of the cold air dampers to adjust the air intake at the damper and control the temperature inside the calcining furnace. Among these, the temperature stability of the fire channel is of paramount importance in production.
[0003] Existing automatic temperature control systems use actuators to drive clutches and damper shafts, rotating in the same direction as the damper. Electrical control enables the damper to rotate 0-90°. However, this system suffers from several drawbacks: high precision requirements for manufacturing, high precision in the installation and assembly of components, and operation in dusty, high-temperature environments. Prolonged operation significantly impacts accuracy and increases the difficulty of maintaining stable furnace temperature. Furthermore, the system involves long-term, small-angle, and multi-linkage control, leading to delays in damper adjustment by the electric actuator when manufacturing and assembly precision are too high. Higher manufacturing and installation precision also increases cost, and the system exhibits poor adaptability to high-temperature environments and a short lifespan. Therefore, this application proposes a damper adjustment device for automatic temperature control systems to address these issues. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] In view of the shortcomings of the prior art, this utility model provides a damper adjustment device for an automatic temperature control system, which solves the technical problems mentioned in the background.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a damper adjustment device for an automatic temperature control system, comprising an electric actuator, wherein the electric actuator is connected to the air duct via a bracket, and mounting plates are connected to both the upper and lower ends of the bracket, wherein the top mounting plate is fastened to the air duct by bolt two, and the bottom mounting plate of the bracket is fastened to the electric actuator by bolt one, wherein a coupling is installed on the output shaft of the electric actuator, wherein a bushing is mated to the coupling, wherein the bushing is sleeved on the bottom end of the damper shaft, wherein the top side of the damper shaft is installed inside the air duct, wherein a damper plate is provided inside the air duct, and wherein the damper plate is installed on the damper shaft by bolt three, wherein a short handle and a long handle are respectively installed on the outside of the coupling and the bushing.
[0008] Preferably, a heat insulation pad is provided between the mounting plate at the bottom of the bracket and the electric actuator.
[0009] Preferably, the damper plate rotates 90 degrees inside the air duct under the drive of the damper shaft, and the damper plate completely blocks and fully opens the air duct at zero angle and 90 degree angle, respectively.
[0010] Preferably, a 0.5mm rotation gap is reserved between the damper shaft and the bushing, and a fastening bolt is installed on the bushing to fix the damper shaft and the bushing.
[0011] Preferably, the output shaft of the electric actuator is a standard spline shaft, and the output shaft is sleeved inside the bottom end of the coupling, and the bottom end of the sleeve is sleeved inside the top end of the coupling, and the sleeve is connected or separated from the top end of the coupling by sliding up and down on the bottom side of the damper shaft.
[0012] Preferably, an XDK head stop is installed at the top of the damper shaft, and the XDK head stop is located at the top of the air duct.
[0013] (III) Beneficial Effects
[0014] The beneficial effects of this utility model are as follows:
[0015] This damper adjustment device for automatic temperature control systems uses a mechanical structure to adjust the damper. It has low temperature sensitivity, and the positioning is entirely achieved through mechanical contact, ensuring high positioning accuracy. It also operates more smoothly and has high reliability. In addition, it has a manual adjustment option, making it more versatile. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the heat insulation pad of this utility model;
[0018] Figure 3This is a perspective three-dimensional structural diagram of the coupling component of this utility model;
[0019] Figure 4 This is a planar and perspective three-dimensional structural diagram of the coupling sleeve of this utility model;
[0020] Figure 5 This is a three-dimensional structural diagram of the damper shaft of this utility model;
[0021] Figure 6 This is a perspective three-dimensional structural diagram of the bracket of this utility model;
[0022] Figure 7 This is a three-dimensional structural diagram of the damper panel of this utility model;
[0023] Figure 8 This is a perspective three-dimensional structural diagram of the ventilation duct of this utility model.
[0024] In the diagram: 1 Electric actuator, 2 Heat insulation pad, 3 Bolt 1, 4 Coupling, 5 Shaft sleeve, 6 Fastening bolt, 7 Damper shaft, 8 Bracket, 9 Bolt 2, 10 Bolt 3, 11 Damper plate, 12 Air duct, 13 XDK head cover, 14 Mounting plate. Detailed Implementation
[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0026] like Figure 1-8As shown, this utility model provides a technical solution: a damper adjustment device for an automatic temperature control system, including an electric actuator 1. The electric actuator 1 is connected to the air duct 12 via a bracket 8, and mounting plates 14 are connected to both the upper and lower ends of the bracket 8. A heat insulation pad 2 is provided between the mounting plate 14 at the bottom of the bracket 8 and the electric actuator 1 to insulate the heat generated by the electric actuator 1. The top mounting plate 14 is fastened to the air duct 12 by bolt 2 9, and the bottom mounting plate 14 of the bracket 8 is fastened to the electric actuator 1 by bolt 1 3. A coupling 4 is installed on the output shaft of the electric actuator 1, and a bushing 5 is mated to the coupling 4. The bushing 5 is sleeved on the square part at the bottom end of the damper shaft 7. The square part at the bottom end of the damper shaft 7 and the square part inside the bushing 5 are connected. The slotted connection prevents the bushing 5 from rotating. The top side of the damper shaft 7 is installed inside the air duct 12, and a damper plate 11 is installed inside the air duct 12. The damper plate 11 is installed on the damper shaft 7 by bolts 3 10. A rotation gap of 0.5mm is reserved between the damper shaft 7 and the bushing 5. Fastening bolts 6 are installed on the bushing 5 to fix the damper shaft 7 and the bushing 5. The damper plate 11 rotates 90 degrees inside the air duct 12 under the drive of the damper shaft 7. The damper plate 11 completely blocks and completely opens the air duct 12 at zero angle and 90-degree angle, respectively. After the electric actuator 1 is powered on, according to the internal re-running logic, the above-mentioned door plate 11, damper shaft 7, bushing 5, and connecting part 4 are mechanically coordinated and driven by the electric actuator 1 to return to the fully closed position. Figure 1 As shown, the angle is recorded as 0° at this time. When the temperature inside the calcining furnace changes, the damper plate 11 is adjusted back and forth between the fully closed (0°) and fully open (90°) positions according to the feedback model. During the electric adjustment using the electric actuator 1, the bolt 6 must be tightened to eliminate the design-reserved gap between the damper shaft 7 and the bushing 6. The electric actuator 1 is a common electric actuator in reality, and the output shaft is a standard spline shaft. Therefore, when machining the connecting part 4, a clearance fit is used, and the machining dimensional accuracy requirement is not high. The bolt 6 is used to eliminate the overall gap. Therefore, the machining accuracy requirement for the connecting part 4 and the bushing 5 can be around 0.5mm. During installation, ensure that it is in accordance with the specifications. Figure 1Install as shown in the installation position. The output shaft of the electric actuator 1 is a standard spline shaft, and the output shaft is sleeved inside the bottom end of the coupling 4. The bottom end of the bushing 5 is sleeved inside the top end of the coupling 4. Both the bushing 5 and the coupling 4 have square structures for synchronous rotation. The bushing 5 is slid up and down on the bottom side of the damper shaft 7 to connect or disconnect with the top end of the coupling 4. The coupling 4 and bushing 5 are respectively equipped with a short handle and a long handle. When the electric actuator 1 malfunctions or the feedback model cannot be accurately measured, manual intervention is required to adjust this structure in order to ensure timely adjustment of the airflow. For manual mode, during manual adjustment, bolt 6 needs to be loosened using the wrench provided with electric actuator 1, and the bushing 5 needs to be lifted vertically to completely separate the bushing 5 from the connector 4. Then, bolt 6 should be tightened to prevent the bushing 5 from automatically rotating to the corresponding position and automatically combining with the connector 4. Rotating the bushing 4 achieves manual adjustment. When electric actuator 1 completes maintenance or the feedback signal is normal, the bushing 5 and connector 4 can be combined again to achieve automatic adjustment of the air intake volume. The top of the damper shaft 7 is equipped with an XDK head stop 15, and the XDK head stop 15 is located at the top of the air duct 12.
[0027] The operational steps for this application are as follows:
[0028] After power is supplied to the electric actuator 1, according to its internal operating logic, the motor of the electric actuator 1 starts according to the signal and drives the output shaft to rotate through the reduction mechanism. The entire mechanical assembly of the aforementioned door panel 11, damper shaft 7, bushing 5, and connecting piece 4 will be driven to rotate by the electric actuator 1, and the door panel 11 will return to the fully closed position. Figure 1 As shown, the angle is recorded as 0° at this time. When the temperature inside the calcining furnace changes, the damper plate 11 is adjusted back and forth between the fully closed (0°) and fully open (90°) positions according to the feedback model. During the electric adjustment using the electric actuator 1, the bolt 6 must be tightened to eliminate the design-reserved gap between the damper shaft 7 and the bushing 6. The electric actuator 1 is a common electric actuator in reality, and the output shaft is a standard spline shaft. Therefore, when machining the connecting part 4, a clearance fit is used, and the machining dimensional accuracy requirement is not high. The bolt 6 is used to eliminate the overall gap. Therefore, the machining accuracy requirement for the connecting part 4 and the bushing 5 can be around 0.5mm. During installation, ensure that it is in accordance with the specifications. Figure 1 Install at the indicated location;
[0029] When the electric actuator 1 malfunctions or the feedback signal cannot be accurately measured, manual intervention is required to ensure timely adjustment of the airflow. This structure is then switched to manual mode. During manual adjustment, bolt 6 needs to be loosened using the wrench provided with the electric actuator 1. The bushing 5 is then lifted vertically to completely separate the bushing 5 from the connector 4. Bolt 6 is then tightened to prevent the bushing 5 from automatically rotating to the corresponding position and automatically reassembling with the connector 4. Rotating the bushing 4 enables manual adjustment. When the electric actuator 1 has completed maintenance or the feedback signal is normal, the bushing 5 and connector 4 are reassembled to achieve automatic adjustment of the airflow.
[0030] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0031] In this utility model, unless otherwise explicitly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A damper regulating device for an automatic temperature control system, comprising an electric actuator (1), characterized in that: The electric actuator (1) is connected to the air duct (12) by a bracket (8), and both the upper and lower ends of the bracket (8) are connected to mounting plates (14). The top mounting plate (14) is fastened to the air duct (12) by bolt two (9), and the bottom mounting plate (14) of the bracket (8) is fastened to the electric actuator (1) by bolt one (3). A coupling (4) is installed on the output shaft of the electric actuator (1). The coupling (4) is connected to a bushing (5). The bushing (5) is fitted on the bottom end of the damper shaft (7). The top side of the damper shaft (7) is installed inside the air duct (12). A damper plate (11) is provided inside the air duct (12). The damper plate (11) is installed on the damper shaft (7) by bolt three (10). A short handle and a long handle are respectively installed on the outside of the coupling (4) and the bushing (5).
2. The damper regulating device for an automatic temperature control system according to claim 1, characterized in that: A heat insulation pad (2) is provided between the mounting plate (14) at the bottom of the bracket (8) and the electric actuator (1).
3. The damper regulating device for an automatic temperature control system according to claim 1, characterized in that: The damper plate (11) rotates 90 degrees inside the air duct (12) under the drive of the damper shaft (7), and the damper plate (11) completely blocks and completely opens the air duct (12) at zero angle and 90 degree angle respectively.
4. The damper regulating device for an automatic temperature control system according to claim 1, characterized in that: A 0.5mm rotation gap is reserved between the damper shaft (7) and the bushing (5), and a fastening bolt (6) is installed on the bushing (5) to fix the damper shaft (7) and the bushing (5).
5. A damper regulating device for an automatic temperature control system according to claim 1, characterized in that: The output shaft of the electric actuator (1) is a standard spline shaft, and the output shaft is sleeved inside the bottom end of the connecting shaft (4), and the bottom end of the bushing (5) is sleeved inside the top end of the connecting shaft (4), and the bushing (5) is connected or separated from the top end of the connecting shaft (4) by sliding up and down the bottom side of the damper shaft (7).
6. A damper regulating device for an automatic temperature control system according to claim 1, characterized in that: The top of the damper shaft (7) is equipped with an XDK head stop (15), and the XDK head stop (15) is located at the top of the air duct (12).