Centrifugal fan wheel

Abstract

The utility model discloses a centrifugal wind wheel, including wheel disc and mounting bracket, is equipped with the blade on the mounting bracket, is equipped with the mounting frame on the mounting bracket, is equipped with the mounting block on the blade, and the mounting block is assembled in the mounting frame, and the mounting frame is fixed through screw between mounting block, and the gasket is equipped between screw and mounting block, and the anti -skid tooth pattern is equipped with in the contact surface of mounting block and gasket, is equipped with the mounting groove in the mounting frame, and the mounting block is located in the mounting groove, and the magnetic attraction locating block is equipped in the mounting groove, and the mounting block is iron material, and the mounting groove and magnetic attraction locating block attract each other, and the buffer block is equipped in the mounting groove, through the plug -in combination structure of mounting frame and mounting block, cooperate screw fastening, can realize the adjustable of blade installation quantity, can replace to damaged blade simultaneously, prolongs the service life of centrifugal fan.

Description

Technical Field

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

[0002] Centrifugal fans, as core components of gas conveying systems such as ventilation and dust removal, have been widely used in industries such as machinery, power, and chemicals. Centrifugal fans are mainly composed of impellers, casings, couplings, and shafts. The impeller is the main working component that generates wind pressure and transmits energy. For example, a centrifugal fan impeller structure with patent publication number CN222848398U fixes the blades to the disc or bracket by welding or riveting. The number of blades cannot be adjusted, and damaged blades cannot be replaced, which reduces the service life of the centrifugal fan. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art and to provide a centrifugal impeller that can be easily assembled and adjusted and reliably connected.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A centrifugal impeller includes a disc and a mounting frame. The mounting frame has blades and a mounting frame. The blades have mounting blocks, which are assembled into the mounting frame. The mounting frame and the mounting blocks are fixed together by screws to achieve fixed installation of the blades.

[0006] Furthermore, a washer is provided between the screw and the mounting block, and the mounting block has anti-slip teeth on the contact surface with the washer, thereby improving the connection strength between the mounting block and the mounting frame.

[0007] Furthermore, the mounting frame is provided with a mounting groove, the mounting block is placed in the mounting groove, and a magnetic positioning block is provided in the mounting groove. The mounting block is made of iron material. The mounting groove and the magnetic positioning block attract each other, so that the mounting block can slide in smoothly.

[0008] Furthermore, a buffer block is provided inside the mounting groove to absorb the impact when the mounting block slides into place.

[0009] Furthermore, the inner wall of the mounting groove is provided with a sliding groove, and the side of the mounting block is provided with a sliding block. The sliding block is located in the sliding groove, and both the sliding groove and the sliding block are provided with a coating with a low coefficient of friction.

[0010] Furthermore, the blade is equipped with a connecting block, and the wheel is equipped with a connecting groove. The connecting block is assembled into the connecting groove to achieve the installation and positioning of the blade.

[0011] Furthermore, the inner wall of the connecting groove is provided with a slot, and the side of the connecting block is provided with a locking block. The locking block is locked in the slot to improve the connection strength between the blade and the wheel.

[0012] Furthermore, both the openings of the connecting slot and the card slot are equipped with guide chamfers to ensure that the connecting block and the card block can be smoothly inserted.

[0013] Furthermore, magnetic blocks are provided on both the card block and the card slot, and the magnetic blocks on both sides attract each other to enhance the connection strength of the card block.

[0014] Furthermore, the connecting block has an internal mounting cavity, one end of the locking block is located in the mounting cavity, and a spring is provided between the locking block and the inner wall of the mounting cavity.

[0015] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0016] 1. In this utility model, the number of blades installed can be adjusted by the insertion combination structure of the mounting frame and the mounting block, and the screw fastening. At the same time, the anti-slip teeth and gaskets are set between the mounting block and the mounting frame, which effectively increases the friction of the contact surface, prevents the screws from loosening under long-term vibration environment, improves the reliability and safety of the connection, and extends the service life.

[0017] 2. In this utility model, by setting a magnetic positioning block in the mounting groove and cooperating with an iron mounting block, the initial guidance and positioning of the installation process are realized, which reduces the assembly difficulty and improves the assembly accuracy and efficiency.

[0018] 3. In this utility model, the buffer block set in the mounting groove can effectively absorb the impact energy when the mounting block is in place, avoid collision damage to the components, reduce noise, and protect the structural integrity. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] Figure 1 This is a side view of a centrifugal impeller according to the present invention;

[0021] Figure 2 This is a front view of the blade in this utility model;

[0022] Figure 3 This is a side view of the wheel in this utility model;

[0023] Figure 4 for Figure 1 Enlarged schematic diagram of a local structure at point A;

[0024] Figure 5 for Figure 2 Enlarged schematic diagram of the local structure at point B;

[0025] Figure 6 for Figure 2 Enlarged schematic diagram of the local structure at point C;

[0026] Figure 7 for Figure 3 A magnified schematic diagram of the local structure at point D.

[0027] In the diagram: 1-Disc; 2-Mounting bracket; 3-Blade; 4-Mounting frame; 5-Mounting block; 6-Screw; 7-Washer; 8-Anti-slip teeth; 9-Mounting groove; 10-Magnetic positioning block; 11-Buffer block; 12-Sliding groove; 13-Sliding block; 14-Connecting block; 15-Connecting groove; 16-Card slot; 17-Card block; 18-Magnetic block; 19-Mounting cavity; 20-Spring. Detailed Implementation

[0028] like Figures 1 to 7 As shown, this utility model discloses a centrifugal impeller, which includes a disc 1 arranged opposite to each other, a mounting frame 2 installed between the discs 1, and multiple blades 3 provided on the outer surface of the mounting frame 2.

[0029] The mounting frame 2 is provided with a rectangular mounting frame 4, and a mounting groove 9 is provided inside the mounting frame 4. The root of the blade 3 is provided with a mounting block 5 that mates with the mounting groove 9. The mounting block 5 can be precisely assembled inside the mounting frame 4. Then, the mounting frame 4 and the mounting block 5 can be fastened together by screws 6, thereby achieving reliable fixed installation of the blade 3.

[0030] A washer 7 is provided between the contact surfaces of the screw 6 and the mounting block 5, and the mounting block 5 has radially distributed anti-slip teeth on the surface in contact with the washer 7. These anti-slip teeth can significantly increase the friction of the contact surface, effectively prevent the connection from loosening under vibration conditions, thereby improving the connection strength between the mounting block 5 and the mounting frame 4.

[0031] The mounting slot 9 is fitted with a magnetic positioning block 10. The mounting block 5 is made of iron. When the mounting block 5 is inserted into the mounting slot 9, the magnetic force can guide the mounting block 5 to slide smoothly into the installation position, which greatly facilitates the assembly operation.

[0032] The mounting groove 9 is equipped with a cylindrical buffer block 11 made of polyurethane elastomer. When the mounting block 5 slides to the end of the mounting groove 9, the mounting block 5 impacts the buffer block 11. The buffer block 11 undergoes elastic deformation, effectively absorbing the impact energy of the mounting block 5 and preventing impact noise and damage between the mounting components.

[0033] Sliding grooves 12 are machined on both sides of the inner wall of the mounting groove 9. Sliding blocks 13 with matching shapes are provided on the side of the mounting block 5. The sliding blocks 13 are embedded in the sliding grooves 12 to achieve precise guidance and positioning of the mounting block 5 during the sliding process.

[0034] Both the sliding groove 12 and the sliding block 13 are coated with a Teflon low-friction coating to ensure smooth and stable sliding.

[0035] The blade 3 has a connecting block 14 on its side, and the corresponding connecting groove 15 is machined on the wheel disk 1. During assembly, the connecting block 14 is embedded in the connecting groove 15 to achieve the initial installation and positioning of the blade 3.

[0036] The inner wall of the connecting groove 15 is machined with a slot 16, and the side of the connecting block 14 is provided with a retractable locking block 17 through an elastic mechanism. When the connecting block 14 is fully embedded in the connecting groove 15, the locking block 17 pops out under the action of the spring 20 and locks into the slot 16, forming a mechanical interlock, which significantly improves the connection strength between the blade 3 and the wheel 1.

[0037] The inlet edge of the connecting groove 15 and the opening of the slot 16 are both machined with smooth guide chamfers. The chamfer surfaces are precision polished, which can effectively guide the connecting block 14 and the slot 17 to slide smoothly into the corresponding positions and avoid jamming during assembly.

[0038] Permanent magnets are embedded in the working end face of the card block 17 and the contact surface of the card slot 16. When the card block 17 is inserted into the card slot 16, the magnets on both sides generate a magnetic force that attracts each other, further enhancing the holding force of the card block 17 and improving the connection reliability.

[0039] The magnet surface is nickel-plated, providing excellent corrosion resistance.

[0040] The connecting block 14 has an internal mounting cavity 19. One end of the locking block 17 extends into the mounting cavity 19. A spring 20 is provided between the locking block 17 and the inner wall of the mounting cavity 19 to provide continuous elastic force to the locking block 17.

[0041] The end of the card block 17 is provided with a limiting plate for sliding and limiting the card block 17.

[0042] The working end of the locking block 17 is machined into a smooth arc surface, and the surface is treated with a diamond-like carbon coating, which not only facilitates the smooth sliding of the locking block 17 into the slot 16, but also significantly reduces the coefficient of friction and improves wear resistance, ensuring reliability under long-term use.

[0043] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A centrifugal impeller, comprising a disc and a mounting frame, wherein blades are provided on the mounting frame, characterized in that: The mounting frame is provided with a mounting frame, and the blade is provided with a mounting block. The mounting block is assembled in the mounting frame, and the mounting frame and the mounting block are fixed together by screws to achieve fixed installation of the blade.

2. A centrifugal impeller according to claim 1, characterized in that: A washer is provided between the screw and the mounting block, and the mounting block has anti-slip teeth on the contact surface with the washer, thereby improving the connection strength between the mounting block and the mounting frame.

3. A centrifugal impeller according to claim 1, characterized in that: The mounting frame is provided with a mounting groove, the mounting block is placed in the mounting groove, and a magnetic positioning block is provided in the mounting groove. The mounting block is made of iron material. The mounting groove and the magnetic positioning block attract each other, so that the mounting block can slide in smoothly.

4. A centrifugal impeller according to claim 3, characterized in that: The mounting groove is equipped with a buffer block to absorb the impact when the mounting block slides into place.

5. A centrifugal impeller according to claim 3, characterized in that: The inner wall of the mounting groove is provided with a sliding groove, and the side of the mounting block is provided with a sliding block. The sliding block is located in the sliding groove, and both the sliding groove and the sliding block are provided with a coating with a low coefficient of friction.

6. A centrifugal impeller according to claim 1, characterized in that: The blade is provided with a connecting block, and the wheel is provided with a connecting groove. The connecting block is assembled into the connecting groove to realize the installation and positioning of the blade.

7. A centrifugal impeller according to claim 6, characterized in that: The inner wall of the connecting groove is provided with a slot, and the side of the connecting block is provided with a locking block. The locking block is locked in the slot to improve the connection strength between the blade and the wheel.

8. A centrifugal impeller according to claim 7, characterized in that: Both the opening of the connecting groove and the card slot are provided with guide chamfers to ensure that the connecting block and the card block can be smoothly inserted respectively.

9. A centrifugal impeller according to claim 7, characterized in that: The card block and the card slot are respectively provided with magnetic blocks, and the magnetic blocks on both sides attract each other to enhance the connection strength of the card block.

10. A centrifugal impeller according to claim 9, characterized in that: The connecting block has an internal mounting cavity, one end of the locking block is located in the mounting cavity, and a spring is provided between the locking block and the inner wall of the mounting cavity.

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