Axial flow fan protection structure

Abstract

The utility model relates to the field of axial flow fans, and discloses an axial flow fan protection structure which comprises a shell, a motor support is arranged in the shell and fixedly connected with a motor, an output shaft of the motor is fixedly connected with an impeller, positioning blocks are arranged on the two sides of the motor support, and pressure assemblies are arranged in the positioning blocks. The metal grid protective cover and the plastic protective cover are usually fixed to the fan through bolts or buckles or other connecting modes, after long-term use, the problems of rusting, deformation and the like of fasteners can occur, the disassembly is difficult, and the service life of the fan is prolonged. And the protective cover or other components may be damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fans, and more specifically to a protective structure for axial flow fans. Background Art

[0002] Axial flow fans are ventilation equipment widely used in industrial, commercial and civil construction fields. Axial flow fans are mainly composed of impellers, motors, casings and other parts. Among them, the impeller is the core component of the axial flow fan, which is composed of multiple blades and generates airflow through rotation. The motor provides power for the impeller, and the casing plays a role in fixing and supporting. The protective structure of the axial flow fan is equipped with metal mesh shields, plastic shields, etc. at the air inlet and outlet. However, although these metal mesh shields can prevent people from contacting the impeller, there are the following problems: metal mesh shields and plastic shields are usually fixed to the fan by bolts, buckles or other connection methods. After long-term use, the fasteners may rust and deform, making it difficult to disassemble, and may damage the shield or other parts.

[0003] In view of this, we propose an axial flow fan protection structure. Utility Model Content

[0004] The purpose of the utility model is to provide an axial flow fan protection structure to address the deficiencies in the prior art. Metal mesh shields and plastic shields are usually fixed to the fan by bolts, clips or other connection methods. After long-term use, the fasteners may rust and deform, making disassembly difficult and possibly damaging the shield or other components.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: an axial flow fan protection structure, comprising: an outer shell, a motor bracket is arranged inside the outer shell, the motor bracket is fixedly connected to the motor, the motor output shaft is fixedly connected to the impeller, positioning blocks are arranged on both sides of the motor bracket, a pressure assembly is arranged inside the positioning block, and the pressure assembly tightly presses the protective plate.

[0006] Preferably, a group of sealing blocks are provided on the outer side of the shell, the sealing blocks are slidably connected to sealing plates, and an anti-slip pad is provided on one side of the sealing plate.

[0007] Preferably, an air inlet hole is provided on a side of the motor bracket close to the impeller, and the motor bracket is fixedly connected to the inner wall of the shell.

[0008] Preferably, the pressure assembly includes a spring, a connecting rod and a pressure plate, the pressure plate is slidably connected to the inside of the positioning block, one side of the pressure plate is fixedly connected to one end of the connecting rod, the other end of the connecting rod is tightly pressed against one end of the spring, the other end of the spring is tightly pressed against the surface of the positioning block, and the other side of the pressure plate is tightly pressed against the protective plate.

[0009] Preferably, the protective plate is composed of a frame, a second spring, a second connecting rod, a pull plate, a triangular plate and an inclined plate. A snap-in groove is opened on one side of the frame, and a second spring is arranged inside the snap-in groove. One end of the second spring is tightly pressed against one end of the second connecting rod, and the other end of the second connecting rod is fixedly connected to the pull plate, and the pull plate is tightly pressed against one side of the sealing plate.

[0010] Preferably, an inclined plate is fixedly connected inside the frame, the inclined plate is located above the triangular plate, and the inclined plate and the triangular plate are distributed in an array inside the frame, with the inclined plate being on the outside and the triangular plate being on the inside.

[0011] According to the above scheme,

[0012] Compared with the prior art, the beneficial effects are as follows:

[0013] The utility model provides continuous and appropriate pressure for the protective plate by aligning the installation position of the positioning block with the sealing block, sealing plate and anti-skid pad provided on one side of the shell, and the coordinated action of the spring, connecting rod and pressure plate in the internal pressure assembly of the positioning block, thereby ensuring that the protective plate can be firmly fixed on the shell and can be quickly removed and installed, and can effectively block the impact and damage of external objects to the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall decomposition structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the protective plate of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the pressure component of the utility model;

[0018] In the figure: 1, casing; 2, motor bracket; 3, motor; 4, impeller; 5, positioning block; 6, pressure assembly; 7, protective plate; 101, sealing block; 102, sealing plate; 103, anti-skid pad; 201, air inlet; 601, spring; 602, connecting rod; 603, pressure plate; 701, frame; 702, second spring; 703, second connecting rod; 704, pull plate; 705, triangular plate; 706, tilting plate; 707, snap-in groove. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below with reference to the accompanying drawings and through specific embodiments. The following embodiments are merely illustrative and not limiting of the protection scope of the utility model.

[0020] Example

[0021] like Figure 1-Figure 4 As shown: An axial flow fan protection structure includes: a housing 1 that provides a protective environment for internal components and also ensures the stable operation of the fan. A motor bracket 2 is designed inside the housing 1. The main function of the motor bracket 2 is to provide a stable support for the motor 3. The motor 3 is firmly mounted on the motor bracket 2 through a fixed connection method, ensuring that the motor will not be displaced due to vibration or other external factors during operation.

[0022] The output shaft of the motor 3 is connected to the impeller 4. This fixed connection ensures that when the motor rotates, the impeller can rotate synchronously, thereby generating a continuous airflow. The rotation speed of the impeller is closely related to the speed of the motor, so the stability of this connection is crucial.

[0023] In order to ensure the accurate positioning of the motor bracket 2, positioning blocks 5 are designed on both sides. These positioning blocks 5 not only provide additional support for the motor bracket, but also ensure that it will not move at a specific position. This design further enhances the stability of the entire axial flow fan.

[0024] Pressure components 6 are also provided inside the positioning block 5. The main function of these pressure components is to apply pressure to the protective plate 7 to ensure that it is tightly pressed on the housing. Through this tight pressing method, the protective plate 7 can effectively prevent foreign objects or impurities from entering the fan, thereby protecting the internal components from damage.

[0025] The combination of the protective plate 7 and the pressure assembly 6 not only ensures the stability of the protective plate, but also makes it easier to replace or clean the protective plate. When the protective plate needs to be replaced or cleaned, the protective plate can be easily removed by simply removing the pressure assembly to perform the corresponding operation.

[0026] It can be understood that: the outer shell 1 serves as a protective barrier for the entire fan, and a group of sealing blocks 101 are added to the outside of the outer shell 1. This design element greatly enhances the sealing performance of the fan and effectively blocks external impurities and moisture from entering the inside of the fan.

[0027] The sealing blocks 101 are distributed on the outside of the housing, and their main function is to provide a stable support and sliding channel for the internal sealing plate 102. Each sealing block is made of wear-resistant and anti-aging materials to ensure that it can still maintain a good working condition after long-term use.

[0028] A slidingly connected sealing plate 102 is provided inside the sealing block 101. This sliding connection structure allows the sealing plate to slide smoothly on the housing, so that it can maintain a close fit with the housing under different working conditions. The sealing plate is made of a highly elastic material to ensure that it can deform under the action of external force, thereby filling any small gaps on the housing.

[0029] An anti-skid pad 103 is also provided on one side of the sealing plate 102. The anti-skid pad 103 is used to prevent sweaty palms of workers from being removed during disassembly and installation. Through the design of the sealing component, the axial flow fan can not only maintain stable operation under harsh environmental conditions, but also effectively extend its service life. When the fan is in operation, the sealing plate and the anti-skid pad work together to isolate external moisture, dust and other impurities from the fan, ensuring the safe operation of internal components and facilitating cleaning or replacement of the protective plate.

[0030] It is understandable that the motor support 2 is an important component, which not only supports the motor, but also bears the heavy task of connecting the housing and the impeller. In particular, the air inlet 201 on one side of the motor support close to the impeller 4.

[0031] The motor bracket 2 is firmly mounted on the inner wall of the housing 1 by a fixed connection method. This fixed connection ensures that the motor bracket will not be displaced due to the operation vibration of the fan or other external factors, thereby ensuring the stability of the entire fan system.

[0032] A series of air inlet holes 201 are designed on the motor bracket near the side of the impeller 4. The main function of these air inlet holes is to guide external air into the fan to provide the necessary airflow for the rotation of the impeller. The number, size and distribution of the air inlet holes are carefully calculated and designed to ensure that sufficient and uniform airflow can be provided when the fan is running.

[0033] The air inlet also improves ventilation efficiency. Through reasonable hole shape and layout, the air inlet can effectively reduce the noise caused by air flow friction, thereby improving the running comfort of the fan. Improving the ventilation efficiency of the fan allows the fan's performance to be fully utilized.

[0034] It is understood that the pressing plate 603 is installed inside the positioning block 5 by means of a sliding connection. This sliding connection structure allows the pressing plate to move smoothly inside the positioning block, thereby adapting to the pressure requirements under different conditions. The pressing plate is made of high-strength material to ensure that it can withstand the external pressure without deformation.

[0035] One side of the pressure plate 603 is fixedly connected to one end of the connecting rod 602. The connecting rod is made of a rigid material and can effectively transmit pressure. The other end of the connecting rod is tightly pressed against one end of the spring 601. This pressing method ensures that when external pressure is applied, the spring can be effectively compressed, thereby generating a corresponding reaction force.

[0036] The other end of the spring 601 is tightly pressed against the surface of the positioning block 5. This pressing method allows the spring to be in a continuous compression state, thereby providing continuous pressure to the protective plate. The elasticity and stiffness of the spring are carefully selected and designed to ensure that it can provide appropriate pressure, neither too large to damage the protective plate, nor too small to loosen the protective plate.

[0037] Under the action of the pressure assembly, the protective plate 7 is tightly pressed on the other side of the pressure plate 603. This pressing method ensures that the protective plate can be firmly fixed on the housing to prevent external impurities from entering the fan. At the same time, the material and thickness of the protective plate are also carefully selected and designed to ensure that it can effectively prevent external objects from impacting and damaging the fan.

[0038] It is understood that the main body of the protective plate is a frame 701. This frame is made of high-strength material, has sufficient rigidity and stability, and can effectively resist external impact and damage. A snap-in slot 707 is provided on one side of the frame, and the design of this snap-in slot cleverly realizes the connection between the protective plate and other components.

[0039] A second spring 702 is disposed inside the clamping groove 707. One end of the second spring is tightly pressed against one end of the second connecting rod 703. The elasticity and stiffness of the second spring are carefully selected and designed to provide an appropriate reaction force so that the protective plate can be tightly fixed on the housing.

[0040] The other end of the second connecting rod 703 is fixedly connected to the pull plate 704. The pull plate is made of high-strength material and can withstand external pressure without deformation. One side of the pull plate is tightly pressed against one side of the sealing plate 102, ensuring a tight connection between the sealing plate and the protective plate to prevent external impurities from entering the fan.

[0041] In addition to the frame, the second spring, the second connecting rod and the pull plate, the protective plate also includes a triangular plate 705 and an inclined plate 706. The unique design of these two parts can effectively disperse the pressure of external impact on the protective plate and improve the impact resistance of the protective plate. At the same time, the material and thickness of the triangular plate and the inclined plate are also carefully selected and designed to ensure that they can withstand external impact without damage.

[0042] It is understood that the frame 701 is the basic structure of the protective plate, and the inclined plate 706 is fixedly connected to the frame. This fixed connection method ensures that the inclined plate can be firmly fixed inside the frame without displacement or falling off. The frame is made of high-strength material, has excellent rigidity and stability, and can withstand external impact and pressure without deformation.

[0043] The inclined plate 706 is located above the triangular plate 705 and extends outward. This layout enables the inclined plate to become the first line of defense of the protective plate, and is the first to be exposed to external impact and impurities. The inclined plate is made of wear-resistant and impact-resistant materials, which can effectively withstand the impact of external objects and guide them downward.

[0044] Inside the frame, the inclined plates 706 and the triangular plates 705 are arranged in an array. This array distribution enables the protective plate to withstand impacts and pressures from different directions, thereby enhancing its overall protective performance. The arrangement of the inclined plates and the triangular plates is tight and orderly, ensuring that the protective effect of the protective plate at different positions is uniform.

[0045] The inclined plate is an outer protective component that mainly protects against external impact and impurities. Its tilt angle is carefully designed to direct the impact and impurities downward to avoid direct damage to the inside of the fan. At the same time, the material and thickness of the inclined plate are also carefully selected and designed to ensure that it can withstand long-term impact and wear without damage.

[0046] As the inner protective component, the main function of the triangle plate 705 is to further disperse the impact and pressure transmitted by the inclined plate. The triangle plate is made of high-strength material and has excellent impact resistance. Its unique triangular structure can effectively disperse the impact to a larger area and reduce the pressure on a single point. This design not only improves the impact resistance of the protective plate, but also effectively extends its service life.

[0047] The working process of the utility model is as follows: when the protective plate needs to be cleaned, the sealing plate is first opened, and then the second spring releases the restriction and enables the second connecting rod to move outward with the pulling plate, and then the protective plate is pulled out as a whole through the pulling plate. When the protective plate needs to be installed after cleaning, the pressing plate is first moved to insert the protective plate into the positioning block, and then the sealing plate is moved up and down through the pulling plate, and fixedly connected with the sealing block.

[0048] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. An axial flow fan protection structure, characterized in that: include: A housing (1), wherein a motor bracket (2) is provided inside the housing (1), wherein the motor bracket (2) is fixedly connected to a motor (3), wherein an output shaft of the motor (3) is fixedly connected to an impeller (4), positioning blocks (5) are provided on both sides of the motor bracket (2), wherein a pressure assembly (6) is provided inside the positioning block (5), and wherein the pressure assembly (6) is tightly pressed against a protective plate (7).

2. The axial flow fan protection structure according to claim 1, characterized in that: A group of sealing blocks (101) are provided on the outside of the housing (1), the sealing blocks (101) are slidably connected to sealing plates (102) inside, and an anti-slip pad (103) is provided on one side of the sealing plate (102).

3. The axial flow fan protection structure according to claim 2, characterized in that: An air inlet hole (201) is provided on a side of the motor bracket (2) close to the impeller (4), and the motor bracket (2) is fixedly connected to the inner wall of the outer casing (1).

4. The axial flow fan protection structure according to claim 3, characterized in that: The pressure assembly (6) comprises a spring (601), a connecting rod (602) and a pressure plate (603); the pressure plate (603) is slidably connected to the interior of the positioning block (5); one side of the pressure plate (603) is fixedly connected to one end of the connecting rod (602); the other end of the connecting rod (602) is tightly pressed against one end of the spring (601); the other end of the spring (601) is tightly pressed against the surface of the positioning block (5); and the other side of the pressure plate (603) is tightly pressed against the protective plate (7).

5. The axial flow fan protection structure according to claim 4, characterized in that: The protective plate (7) is composed of a frame (701), a second spring (702), a second connecting rod (703), a pull plate (704), a triangular plate (705) and an inclined plate (706); a clamping groove (707) is provided on one side of the frame (701); a second spring (702) is arranged inside the clamping groove (707); one end of the second spring (702) is tightly pressed against one end of the second connecting rod (703); the other end of the second connecting rod (703) is fixedly connected to the pull plate (704); and the pull plate (704) is tightly pressed against one side of the sealing plate (102).

6. The axial flow fan protection structure according to claim 5, characterized in that: The frame (701) is internally fixedly connected with an inclined plate (706), the inclined plate (706) being located above the triangular plate (705), the inclined plate (706) and the triangular plate (705) being distributed in an array inside the frame (701), the inclined plate (706) being on the outside and the triangular plate (705) being on the inside.

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