A damper fixing device based on thread adjustment
By using the threaded engagement between the sleeve component and the rigid adjusting rod, the problem of rapid installation and precise adjustment in case of damper actuator failure is solved, achieving stable and fixed damper opening, avoiding production interruption, and enhancing the device's vibration resistance and installation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BENXI IRON & STEEL (GRP) MINING LIAOYANG MALLING PELLET CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-05-26
AI Technical Summary
In the existing technology, when the damper actuator fails, the machine needs to be shut down for maintenance, which leads to production interruption. Furthermore, there is a lack of a device that can be quickly installed and temporarily fixed in position without shutting down the machine. This makes it impossible to accurately adjust the damper opening, resulting in low installation efficiency and insufficient stability, and poses safety hazards.
The sleeve component is threadedly engaged with the rigid adjusting rod. The length can be infinitely adjusted by rotating the outer sleeve and the thread of the rigid adjusting rod. The two ends of the device are fixed to the damper and the fan fixing point to form a rigid support. Fine adjustment can be achieved by adjusting the nut to adapt to dynamic needs.
It enables rapid installation by a single person, precise adjustment and stable fixation of the damper opening, avoids production interruption, enhances vibration resistance, and reduces manufacturing costs.
Smart Images

Figure CN224282977U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial fan equipment technology, and more particularly to a damper fixing device based on thread adjustment. Background Technology
[0002] In industrial production, damper actuators in fan systems are critical control components used to precisely adjust damper openings to control airflow. However, when actuators malfunction, system shutdown for repair or replacement is necessary, leading to production interruptions and significant economic losses. Current technology lacks a device that can quickly install and temporarily fix the damper position without shutting down the system. Traditional solutions typically rely on manual support or simple support tools, but these have the following problems: First, they lack precise adjustment: temporary support tools struggle to fine-tune damper openings, resulting in inaccurate airflow control; second, they have low installation efficiency: requiring multiple operators and being time-consuming, they cannot meet emergency repair needs; and third, they lack stability: simple tools are susceptible to fan vibrations, resulting in poor support reliability and safety hazards.
[0003] Therefore, there is an urgent need for a rigid fixing device that is simple in structure, easy to install quickly, and has stepless length adjustment function to maintain the position of the damper during actuator maintenance, avoid production interruption, and support temporary fine-tuning of the damper opening. Utility Model Content
[0004] To address the aforementioned technical issues, a threaded adjustment damper fixing device is provided. By integrating a ring-shaped zipper opening that does not require cutting and a drainage tube follow-up fixing system, it adapts to postoperative dynamic needs and reduces the risk of local compression.
[0005] To achieve the above objectives, this utility model provides a damper fixing device based on thread adjustment, comprising: a sleeve component and a thread adjustment mechanism;
[0006] The sleeve component includes an outer sleeve, which is a hollow cylindrical structure with internal threads on the inner wall;
[0007] The thread adjustment mechanism includes a rigid adjustment rod, and the outer surface of the rigid adjustment rod is provided with an external thread that matches the internal thread of the outer sleeve;
[0008] The overall length can be infinitely adjusted by rotating the outer sleeve in connection with the threaded engagement of the rigid adjusting rod.
[0009] The two ends of the device are fixed to the damper and the fan fixing point respectively by bolts to form a rigid support.
[0010] Furthermore, one end of the outer sleeve is provided with a first bolt fixing hole for fixing to the reserved interface on the damper side.
[0011] Furthermore, one end of the rigid adjusting rod is provided with a second bolt fixing hole for fixing to the fan fixing point.
[0012] Furthermore, it also includes an adjusting nut, which is fitted onto the external thread of the rigid adjusting rod.
[0013] Furthermore, the adjusting nut engages with the external thread of the rigid adjusting rod, and is used to fine-tune the thread engagement of the outer sleeve and the rigid adjusting rod.
[0014] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:
[0015] 1. The present invention provides a damper fixing device based on thread adjustment, which achieves stepless length adjustment through the threaded engagement of the sleeve component and the rigid adjusting rod. It can be quickly adapted to the distance between the damper and the fan fixing point by a single person, without the need for special tools, and significantly shortens the maintenance preparation time.
[0016] 2. The present invention provides a damper fixing device based on thread adjustment. The two ends of the device are fixed to the damper and the fan fixing point respectively through the first bolt fixing hole and the second bolt fixing hole, forming a rigid support structure. During the maintenance of the damper actuator, the damper opening is kept stable, avoiding production interruption.
[0017] 3. The damper fixing device based on thread adjustment provided by this utility model adopts a pure mechanical structure with no complex parts. It enhances the anti-vibration performance through the self-locking of the thread and the fine adjustment function of the adjusting nut, ensuring that the temporary fixing is stable and reliable, and the manufacturing cost is low. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a front view of the outer sleeve structure of a damper fixing device based on thread adjustment according to this utility model;
[0020] Figure 2 This is a cross-sectional view of the outer sleeve A of the damper fixing device based on thread adjustment according to this utility model;
[0021] Figure 3 This is a schematic diagram of the rigid adjusting rod structure of a damper fixing device based on thread adjustment as described in this utility model;
[0022] Figure 4 This is a schematic diagram of the overall structure of a damper fixing device based on thread adjustment as described in this utility model.
[0023] In the diagram: 1. Outer sleeve; 2. Internal thread; 3. First bolt fixing hole; 4. Second bolt fixing hole; 5. Rigid adjusting rod; 6. External thread; 7. Adjusting nut. Detailed Implementation
[0024] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0028] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually 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. Unless otherwise stated, these directional terms do not 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0029] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0030] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.
[0031] like Figures 1 to 4 As shown, this utility model provides a damper fixing device based on thread adjustment, including: a sleeve component and a thread adjustment mechanism;
[0032] The sleeve component includes an outer sleeve 1, which is a hollow cylindrical structure with an internal thread 2 on the inner wall;
[0033] The thread adjustment mechanism includes a rigid adjustment rod 5, and the outer surface of the rigid adjustment rod 5 is provided with an external thread 6 that matches the internal thread 2 of the outer sleeve 1;
[0034] By rotating the outer sleeve 1 and the threaded engagement of the rigid adjusting rod 5, the overall length can be infinitely adjusted. The threaded engagement enables continuous length adjustment and adapts to dampers and fan fixing points with different spacing.
[0035] The device is fixed to the damper and the fan mounting points at both ends by bolts to form a rigid support and prevent the damper from shaking during maintenance.
[0036] Furthermore, one end of the outer sleeve 1 is provided with a first bolt fixing hole 3 for fixing to the reserved interface on the damper side. The reserved interface is fixed with the bolt to prevent slippage and ensure the stability of the device.
[0037] Furthermore, one end of the rigid adjustment rod 5 is provided with a second bolt fixing hole 4 for fixing to the fan fixing point. The bolt is fixed to the fan fixing point to form a rigid support core node.
[0038] Furthermore, it also includes an adjusting nut 7, which is fitted onto the external thread 6 of the rigid adjusting rod 5 to prevent large-scale rotation of the outer sleeve 1, thereby achieving millimeter-level adjustment of the damper opening, and allowing for fine-tuning with one hand during maintenance.
[0039] Furthermore, the adjusting nut 7 engages with the external thread 6 of the rigid adjusting rod 5 to fine-tune the thread engagement of the outer sleeve 1 and the rigid adjusting rod 5. The fine-tuning engagement corresponds to the change in damper opening and maintains the actual working requirements.
[0040] In actual use of this embodiment: Fixing the outer sleeve 1: Fix the first bolt fixing hole 3 of the outer sleeve 1 to the reserved interface on the damper side by bolts;
[0041] Rotate the outer sleeve 1 to extend the rigid adjusting rod 5 outward, and continue rotating until the second bolt fixing hole 4 of the rigid adjusting rod 5 is aligned with the fan fixing point;
[0042] Pass the bolt through the second bolt fixing hole 4 and lock it at the fan fixing point to complete the rigid support installation of the device;
[0043] By rotating the adjusting nut 7, the thread engagement of the outer sleeve 1 and the rigid adjusting rod 5 can be finely adjusted to achieve temporary and precise adjustment of the damper opening.
[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A damper fixing device based on threaded adjustment, characterized in that, include: Sleeve components, thread adjustment mechanism; The sleeve component includes an outer sleeve (1), which is a hollow cylindrical structure with internal threads (2) on the inner wall. The thread adjustment mechanism includes a rigid adjustment rod (5), and the outer surface of the rigid adjustment rod (5) is provided with an external thread (6) that matches the internal thread (2) of the outer sleeve (1). The overall length can be infinitely adjusted by rotating the outer sleeve (1) and the threaded engagement of the rigid adjusting rod (5); The two ends of the device are fixed to the damper and the fan fixing point respectively by bolts to form a rigid support.
2. A threaded adjustment based damper fixture as claimed in claim 1, wherein, One end of the outer sleeve (1) is provided with a first bolt fixing hole (3) for fixing to the reserved interface on the damper side.
3. A threaded adjustment based damper fixture as claimed in claim 1, wherein, One end of the rigid adjusting rod (5) is provided with a second bolt fixing hole (4) for fixing to the fan fixing point.
4. A threaded adjustment based damper fixture as claimed in claim 1, wherein, It also includes an adjusting nut (7), which is fitted onto the external thread (6) of the rigid adjusting rod (5).
5. A threaded adjustment based damper fixture as claimed in claim 4, wherein, The adjusting nut (7) engages with the external thread (6) of the rigid adjusting rod (5) to finely adjust the thread engagement of the outer sleeve (1) and the rigid adjusting rod (5).