Low-noise centrifugal fan blade

Abstract

The utility model discloses a low -noisy centrifugal fan blade, including fan blade body, the fan blade body surface is equipped with frame, the frame surface is equipped with transparent protection board, the fan blade body surface fixedly connected square block, square block side fixedly connected sleeve, the sleeve inside runs through axle body, axle body side is equipped with connecting block, connecting block side fixedly connected rotating plate, the frame surface fixedly connected fixed link. This low -noisy centrifugal fan blade, through being added frame in the fan blade body surface, when using the fan blade body, first close it, at this moment can cover frame on the fan blade body, rotates its rotating plate, makes rotating plate drive axle body in the sleeve inside rotation through connecting block, makes fixed link and inserts in rotating plate inside, at this moment can fix frame and transparent protection board, can prevent hard material from entering the fan blade body inside when not using, influences its next use, makes its protection effect better.

Description

Technical Field

[0001] This utility model belongs to the field of centrifugal fan technology, and in particular relates to a low-noise centrifugal fan. Background Technology

[0002] Centrifugal fan blades are the core component of centrifugal fans. They generate centrifugal force through rotation to push gas radially, achieving functions such as ventilation, dust removal, and pneumatic conveying.

[0003] The following problems exist with the application of low-noise centrifugal fan blades on the market: When traditional low-noise centrifugal fan blades are in use, the air inlet is generally directly facing the outside for air intake. When not in use, they are generally directly exposed to the environment. When a hard object accidentally enters the fan blade body, when the fan blade is restarted, it is easy for the fan blade to be scratched and damaged by the hard object under high speed, which makes its protective effect poor when not in use. Utility Model Content

[0004] The purpose of this invention is to provide a low-noise centrifugal fan blade to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows: A low-noise centrifugal fan blade includes a fan blade body, a frame is provided on the surface of the fan blade body, a transparent protective plate is provided on the surface of the frame, a square block is fixedly connected to the surface of the fan blade body, a sleeve is fixedly connected to the side of the square block, a shaft penetrates through the sleeve, a connecting block is provided on the side of the shaft, a rotating plate is fixedly connected to the side of the connecting block, and two fixing rods are fixedly connected to the surface of the frame.

[0006] Preferably, a sliding groove is formed on the surface of the rotating plate, and a fixing groove is provided at one end of the sliding groove, with the fixing rod inserted inside the fixing groove.

[0007] Preferably, the rotating plate is fixedly connected to a first handle on its side, and the number of the first handle is four.

[0008] Preferably, a first mounting block is fixedly connected to the side of the frame, a second mounting block is fixedly connected to the surface of the fan blade body, a locking block is fixedly connected to the side of the first mounting block, a locking groove is opened on the side of the second mounting block, and the locking block is embedded in the locking groove.

[0009] Preferably, a second handle is fixedly connected to the side of the first mounting block, and there are two second handles.

[0010] Preferably, a limiting frame is fixedly connected to the top of the fan blade body, and the limiting frame is circular in shape.

[0011] This utility model discloses a low-noise centrifugal fan blade with the following advantages: A frame is added to the surface of the fan blade body, and a transparent protective plate is added to the surface of the frame. A square block is installed on the surface of the fan blade body, and a sleeve is installed on the side of the square block. A shaft passes through the inside of the sleeve, and a connecting block is added to the side of the shaft. A rotating plate is installed on the side of the connecting block, and two fixing rods are installed on the surface of the frame. When the fan blade body is finished using, it is first closed. Then, the frame is placed on the fan blade body, and the rotating plate is rotated. This causes the rotating plate to drive the shaft to rotate inside the sleeve through the connecting block, allowing the fixing rods to be inserted into the rotating plate. This fixes the frame and the transparent protective plate, preventing hard objects from entering the fan blade body when not in use and affecting its next use, thus providing better protection. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the card slot structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the fixing rod structure of this utility model;

[0016] Figure 4 For the present utility model Figure 2 Enlarged view of section A in the middle.

[0017] The markings in the diagram are as follows: 1. Fan blade body; 2. Frame; 3. Transparent protective plate; 4. First mounting block; 5. Second mounting block; 6. Rotating plate; 7. Square block; 8. First handle; 9. Sliding groove; 10. Fixing groove; 11. Slot; 12. Fixing rod; 13. Second handle; 14. Locking block; 15. Connecting block; 16. Sleeve; 17. Shaft; 18. Limiting frame. Detailed Implementation

[0018] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0019] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0022] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0023] To better understand the purpose, structure, and function of this utility model, a low-noise centrifugal fan blade of this utility model will be described in further detail below with reference to the accompanying drawings.

[0024] like Figure 1-4As shown, this utility model discloses a low-noise centrifugal fan blade, comprising a fan blade body 1, a frame 2 on the surface of the fan blade body 1, a transparent protective plate 3 on the surface of the frame 2, a square block 7 fixedly connected to the surface of the fan blade body 1, a sleeve 16 fixedly connected to the side of the square block 7, a shaft 17 penetrating through the sleeve 16, a connecting block 15 on the side of the shaft 17, a rotating plate 6 fixedly connected to the side of the connecting block 15, and two fixing rods 12 fixedly connected to the surface of the frame 2. This is achieved by adding a frame 2 and a transparent protective plate 3 to the surface of the fan blade body 1, installing the square block 7 on the surface of the fan blade body 1, and installing the sleeve 16 on the side of the square block 7. The shaft 17 runs through the inside of the sleeve 16. A connecting block 15 is added to the side of the shaft 17. A rotating plate 6 is installed on the side of the connecting block 15. A fixing rod 12 is installed on the surface of the frame 2. The number of fixing rods 12 is increased to two. When the fan blade body 1 is finished using, it is closed first. At this time, the frame 2 can be placed on the fan blade body 1. Rotate the rotating plate 6 so that the rotating plate 6 drives the shaft 17 to rotate inside the sleeve 16 through the connecting block 15. This causes the fixing rod 12 to be inserted into the rotating plate 6. At this time, the frame 2 and the transparent protective plate 3 can be fixed. When not in use, it can prevent hard objects from entering the inside of the fan blade body 1 and affecting its next use, so that its protective effect is better.

[0025] A sliding groove 9 is provided on the surface of the rotating plate 6. A fixing groove 10 is provided at one end of the sliding groove 9. The fixing rod 12 is inserted into the fixing groove 10. By providing a sliding groove 9 on the surface of the rotating plate 6 and a fixing groove 10 at one end of the sliding groove 9, the rotating plate 6 is rotated so that the fixing rod 12 passes through the sliding groove 9 and is inserted into the fixing groove 10, thus fixing the rotating plate 6.

[0026] The first handle 8 is fixedly connected to the side of the rotating plate 6. There are four first handles 8. By installing the first handles 8 on the side of the rotating plate 6, the rotating plate 6 can be easily rotated by holding the first handle 8.

[0027] The frame 2 is fixedly connected to the side of the first mounting block 4, and the fan blade body 1 is fixedly connected to the surface of the second mounting block 5. The first mounting block 4 is fixedly connected to the side of the first mounting block 4, and the second mounting block 5 has a slot 11 on its side. The slot 14 is embedded in the slot 11. By installing the first mounting block 4 on the side of the frame 2, installing the second mounting block 5 on the surface of the fan blade body 1, and installing the slot 14 on the side of the first mounting block 4, and the slot 11 on the side of the second mounting block 5, the frame 2 can be initially fixed.

[0028] The first mounting block 4 is fixedly connected to the second handle 13 on its side. There are two second handles 13. By installing the second handle 13 on the side of the first mounting block 4, the frame 2 can be easily lifted by holding the second handle 13.

[0029] A limiting frame 18 is fixedly connected to the top of the fan blade body 1. The limiting frame 18 is circular in shape. By installing the limiting frame 18 on the top of the fan blade body, the frame 2 is fitted onto the outside of the limiting frame 18, which can prevent the frame 2 from moving.

[0030] The working principle of this low-noise centrifugal fan is as follows: When using this centrifugal fan, install it in the required position and start the fan to begin blowing air. After using the fan body 1, first turn it off. Then, hold the second handle and place the frame 2 on the fan body 1, inserting the locking block 14 into the locking groove 11. At this point, the frame 2 can be initially fixed. Hold the first handle and rotate its rotating plate 6, causing the rotating plate 6 to drive the shaft 17 to rotate inside the sleeve 16 through the connecting block 15. Rotating the rotating plate 6 causes the fixing rod 12 to pass through the sliding groove 9 and insert into the fixing groove 10, thus fixing the rotating plate 6. This also fixes the frame 2 and the transparent protective plate 3, preventing hard objects from entering the fan body 1 when not in use, thus affecting its next use and providing better protection.

[0031] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A low-noise centrifugal fan blade, comprising a fan blade body (1), characterized in that: The surface of the fan blade body (1) is provided with a frame (2), the surface of the frame (2) is provided with a transparent protective plate (3), a square block (7) is fixedly connected to the surface of the fan blade body (1), a sleeve (16) is fixedly connected to the side of the square block (7), a shaft (17) passes through the inside of the sleeve (16), a connecting block (15) is provided on the side of the shaft (17), a rotating plate (6) is fixedly connected to the side of the connecting block (15), and a fixing rod (12) is fixedly connected to the surface of the frame (2). The number of fixing rods (12) is two. The rotating plate (6) has a sliding groove (9) on its surface, and a fixed groove (10) is provided at one end of the sliding groove (9). The fixed rod (12) is inserted into the fixed groove (10). The frame (2) is fixedly connected to the side of the first mounting block (4), and the fan blade body (1) is fixedly connected to the surface of the second mounting block (5). The first mounting block (4) is fixedly connected to the side of the first mounting block (4), and the second mounting block (5) has a slot (11) on its side. The slot (14) is embedded in the slot (11).

2. The low-noise centrifugal fan blade according to claim 1, characterized in that: The rotating plate (6) is fixedly connected to the side of the first handle (8), and there are four first handles (8).

3. The low-noise centrifugal fan blade according to claim 1, characterized in that: The first mounting block (4) is fixedly connected to the second handle (13) on its side, and there are two second handles (13).

4. The low-noise centrifugal fan blade according to claim 1, characterized in that: The top of the blade body (1) is fixedly connected to a limiting frame (18), and the limiting frame (18) is circular in shape.

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