Butterfly damper rotation mistake prevention structure

Abstract

The utility model discloses a butterfly damper rotation mistake prevention structure, including setting on the mistake prevention column of butterfly damper installation casing and setting on the mistake prevention rib of butterfly damper, the mistake prevention rib is interfered with each other with mistake prevention column under the state of butterfly damper reverse installation, and the installation direction of butterfly damper is limited through the cooperation of mistake prevention rib and mistake prevention column, mistake prevention column and butterfly damper's damper shaft are set up parallel with each other, the utility model discloses the cooperation of mistake prevention column on installation casing and mistake prevention rib on butterfly damper, produces mechanical interference when the damper reverse installation, thereby effectively prevents the assembly error. The structure design is ingenious, and the reliability is high, need not to increase the additional complex detection equipment or procedure, can realize mistake prevention purpose, improves production efficiency and product quality.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning unit damper installation technology, specifically to a butterfly damper rotation anti-misoperation structure. Background Technology

[0002] Butterfly dampers, as a common fluid control component, are widely used in ventilation, air conditioning, engine intake systems, and various industrial pipelines. During actual assembly, especially in confined spaces or with poor visibility, operators easily reverse the installation direction (i.e., rotate it 180°). This incorrect installation can lead to a series of problems: First, for asymmetrically designed butterfly dampers, reverse installation alters their aerodynamic characteristics, causing flow regulation characteristics to deviate from design values, affecting system performance and control accuracy. Second, in some applications requiring self-cleaning or specific sealing directions, reverse installation completely disables these functions. Third, if incorrect installation is not detected promptly during maintenance and repair, it increases the difficulty and time required for subsequent troubleshooting, reducing maintenance efficiency.

[0003] To address the aforementioned error-proofing issues, existing technologies typically employ methods such as marking matching elements on the damper and housing, designing asymmetrical mounting holes, or relying on operator experience and visual inspection. However, marking methods are prone to failure in oily environments or poor lighting conditions, and are dependent on human attention; while asymmetrical mounting holes are effective, they increase the complexity of molds and parts, raising manufacturing costs. Therefore, the industry needs a solution that is simple in structure, low in cost, and can effectively prevent misassembly at the physical level without requiring manual judgment. Utility Model Content

[0004] Technical objective: To address the shortcomings of existing damper error prevention installation structures, this utility model discloses a butterfly-shaped damper rotation error prevention structure.

[0005] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution: A rotating anti-misalignment structure for a butterfly damper includes an anti-misalignment column disposed on the mounting housing of the butterfly damper and an anti-misalignment rib disposed on the butterfly damper. The anti-misalignment rib interferes with the anti-misalignment column when the butterfly damper is installed in reverse, and the installation orientation of the butterfly damper is restricted by the cooperation of the anti-misalignment rib and the anti-misalignment column. The anti-misalignment column is arranged parallel to the damper axis of the butterfly damper.

[0006] Preferably, the anti-misalignment rib of this utility model adopts a fan-shaped structure and is set radially along the damper shaft of the butterfly damper. The distance between the edge of the anti-misalignment column near the damper shaft and the damper shaft axis is less than the radius of the fan-shaped structure.

[0007] Preferably, the central angle of the sector-shaped structure of this utility model is 180°.

[0008] Preferably, the end of the anti-misalignment column of this utility model adopts a conical structure, and the radius of the fan-shaped structure is within the range of the maximum and minimum distance between the edge of the conical structure and the axis of the damper shaft.

[0009] Preferably, the number of anti-misalignment ribs in this utility model is two sets, which are symmetrically arranged about the axial center of the butterfly damper.

[0010] Beneficial effects: The butterfly-shaped damper rotation anti-misoperation structure disclosed in this utility model has the following beneficial effects: 1. This utility model utilizes an anti-misalignment post on the mounting housing that works in conjunction with an anti-misalignment rib on the butterfly damper to create mechanical interference when the damper is installed in reverse, thereby effectively preventing assembly errors. This ingenious design offers high reliability and achieves error prevention without requiring additional complex testing equipment or procedures, thus improving production efficiency and product quality.

[0011] 2. The anti-misalignment column of this utility model is set parallel to the damper shaft, which ensures the accuracy of interference judgment.

[0012] 3. The anti-misalignment rib of this utility model adopts a fan-shaped structure with a specific radius, and its positional relationship with the anti-misalignment column is defined to ensure that interference only occurs when the installation is incorrect, and that it can pass smoothly when the installation is correct; the influence of the damper installation angle is also taken into account. The central angle of the fan-shaped structure is set to 180°, providing sufficient interference contact area to ensure the anti-misalignment effect.

[0013] 4. The tapered structure at the end of the anti-misalignment column of this utility model, as well as the matching of the radius and distance range, can guide and precisely limit the assembly path, while reducing structural collisions during misassembly and preventing damage to the structure due to misassembly.

[0014] 5. The two sets of symmetrical anti-misalignment ribs on the butterfly-shaped damper of this utility model further balance the structural stress. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is an assembly diagram of the butterfly-shaped damper and its mounting housing according to this utility model; Figure 2 This is a schematic diagram of the incorrectly installed butterfly damper of this utility model; Among them, 1-installation housing, 2-anti-misalignment column, 3-butterfly damper, 4-anti-misalignment rib, 5-damper shaft. Detailed Implementation

[0017] Reference will now be made in detail to embodiments of the present disclosure, one or more of which are set forth herein. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of the present disclosure, and not by way of limitation. Rather, the following description provides convenient illustrations for implementing exemplary embodiments of the present disclosure. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made to the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0018] like Figure 1 and Figure 2 As shown, the butterfly-shaped damper rotation anti-misalignment structure of this utility model mainly consists of a butterfly-shaped damper mounting shell 1, an anti-misalignment column 2, a butterfly-shaped damper 3, an anti-misalignment rib 4, and a damper shaft 5.

[0019] The anti-misalignment post 2 is fixedly installed on the butterfly damper mounting housing 1, and its axis is parallel to the axis of the damper shaft 5 of the butterfly damper 3. The anti-misalignment rib 4 is formed on the plate of the butterfly damper 3, preferably integrally cast with the damper 3. The anti-misalignment rib 4 is designed as a fan-shaped structure, and its extension direction is along the radial direction of the damper shaft 5.

[0020] During assembly, if the operator attempts to install the butterfly damper 3 into the mounting housing 1 in the wrong orientation (i.e., backwards), such as Figure 2 As shown, the anti-misalignment rib 4 on the butterfly damper 3 will interfere with the anti-misalignment column 2 on the mounting housing 1 in space, causing the butterfly damper 3 to fail to be installed in place, thus prompting the operator to install in the wrong direction.

[0021] Specifically, the distance from the edge of the anti-misalignment post 2 near the damper shaft 5 to the axis of the damper shaft 5 is designed to be less than the radius R1 of the fan-shaped structure of the anti-misalignment rib 4. This means that in an incorrect installation state, the fan-shaped outline of the anti-misalignment rib 4 will collide with the anti-misalignment post 2.

[0022] Preferably, the central angle α of the sector of the anti-misalignment rib 4 is set to 180°, which provides a larger potential interference area, thereby reducing the influence of the installation angle of the butterfly damper and improving the reliability of the anti-misalignment structure. Furthermore, the sector structure is perpendicular to the axis of the damper shaft, reducing the impact of the anti-misalignment structure on the operation of the damper.

[0023] Furthermore, the end of the anti-misalignment column 2 of this utility model can be processed into a conical structure. The radius R1 of the fan-shaped structure of the anti-misalignment rib 4 should fall between the maximum value L1 and the minimum value L2 of the distance from the edge of the conical structure to the axis of the damper shaft 5. This design allows the anti-misalignment rib 4 to slide into the correct position along the conical surface during assembly if the orientation is correct; if the orientation is incorrect, it will be firmly blocked at a specific position, thus avoiding direct collision between structures and reducing the risk of structural damage.

[0024] To improve the structural balance and reliability, two sets of anti-misalignment ribs 4 can be set on the butterfly damper 3. These two sets of anti-misalignment ribs 4 are symmetrically distributed about the axial center of the butterfly damper 3 to ensure the force balance when the damper switches.

[0025] This utility model has a simple anti-misoperation structure, low manufacturing cost, and high reliability. It can effectively avoid functional failure or performance degradation caused by the butterfly damper being installed backwards. At the same time, the design integrated inside the mounting housing does not occupy the external space of the mounting housing, which is conducive to its application in the miniaturized design of air conditioning unit structures.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A butterfly-shaped damper rotation error prevention structure, characterized in that, It includes an anti-misalignment column (2) installed on the butterfly damper mounting housing (1) and an anti-misalignment rib (4) installed on the butterfly damper (3). The anti-misalignment rib (4) interferes with the anti-misalignment column (2) when the butterfly damper (3) is installed in reverse. The anti-misalignment rib (4) and the anti-misalignment column (2) work together to restrict the installation orientation of the butterfly damper (3). The anti-misalignment column (2) and the damper shaft (5) of the butterfly damper (3) are arranged parallel to each other.

2. The butterfly-shaped damper rotation anti-misoperation structure according to claim 1, characterized in that, The anti-misalignment rib (4) adopts a fan-shaped structure and is set radially along the damper shaft (5) of the butterfly damper (3). The distance between the edge of the anti-misalignment column (2) on the side close to the damper shaft (5) and the axis of the damper shaft (5) is less than the radius of the fan-shaped structure.

3. The butterfly-shaped damper rotation anti-misoperation structure according to claim 2, characterized in that, The central angle of the sector-shaped structure is 180°.

4. The butterfly-shaped damper rotation anti-misoperation structure according to claim 2, characterized in that, The end of the anti-misalignment column (2) adopts a tapered structure, and the radius of the fan-shaped structure is within the range of the maximum and minimum distance between the edge of the tapered structure and the axis of the damper shaft (5).

5. The butterfly-shaped damper rotation anti-misoperation structure according to claim 1, characterized in that, The number of anti-misalignment ribs (4) is two sets, which are symmetrically arranged about the axial center of the butterfly damper (3).

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