Energy-saving fan blade

Abstract

The utility model relates to the technical field of energy-saving fans, and discloses an energy-saving fan blade which comprises a hub and a groove formed in the hub, hollow cylinders are additionally arranged at the front end and the rear end of the groove respectively, and inner cavities of the hollow cylinders are connected with extrusion springs and attached to the inner wall of the hub. The cross-shaped raised head is arranged in the center of the inner cavity of the hollow cylinder, the whole cross-shaped raised head is designed to be cylindrical, and raised ends are designed in the center of the periphery of the outer side of the cross-shaped raised head; the blades are arranged on the periphery of the hub, connecting blocks are installed at the centers of the bottoms of the blades, and cross grooves are formed in the centers of the front faces and the back faces of the connecting blocks and correspond to the cross protruding heads. According to the energy-saving fan blade, after the connecting block of the blade is inserted into the groove of the hub, the hollow cylinder moves towards the center of the groove under the action of the extrusion spring and drives the cross-shaped raised head to be inserted into the cross-shaped groove of the connecting block for connection, and by adopting the mode, the loosening phenomenon after long-time use is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of energy-saving fans, in particular to an energy-saving fan blade. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. In China, fan is a customary abbreviation for gas compression and gas delivery machinery, usually including ventilators, blowers and wind turbines. Energy-saving fans are modern fans that use new technologies, new materials and new designs to improve fan efficiency, reduce energy consumption, noise and vibration levels, and meet energy-saving, environmental protection and safety requirements. Energy-saving fans are usually composed of core components such as casing, impeller, air inlet and outer rotor motor, and the impeller is a disc-shaped structure composed of multiple blades.

[0003] Common energy-saving fan blades are usually designed with multiple sets of blades and installed at the corresponding parts of the hub to form a whole, which is then driven by the rotation of the motor or the wind wheel to rotate. This is a common energy-saving fan blade structure and usage method. Traditional energy-saving fan blades are usually designed as an integrated design with the hub. When a single blade is severely worn or damaged, the blade and the hub need to be replaced as a whole, which is inconvenient to use and operate, and also increases the cost of use. Some energy-saving fan blades are designed to be separated from the hub and connected by a threaded structure (such as bolts or screws) to facilitate disassembly and replacement of a single blade. However, in this way, when the blade and the hub are connected by a threaded structure, and in the case of long-term rotation and wear, the blade and the hub will become loose, resulting in the energy-saving fan being unable to work normally or even damaged. For this reason, an energy-saving fan blade is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an energy-saving fan blade to solve the technical problem that the blade and the hub are connected via a threaded structure and may become loose.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: an energy-saving fan blade, comprising:

[0006] A wheel hub, and a groove formed in the center of the wheel hub, and hollow cylinders are provided at the front and rear ends of the groove, and the inner cavities of the hollow cylinders are connected with extrusion springs and fit with the inner wall of the wheel hub;

[0007] The cross convex head is arranged at the center of the inner cavity of the hollow cylinder, and the cross convex head is designed as a whole in a cylindrical shape, and a convex end is designed at the center of the outer periphery;

[0008] The blades are arranged around the hub, and the bottom center of the blades is installed with a connection block, and the center of the front and back sides of the connection block are provided with a cross groove, which corresponds to the cross convex head. After the blade connection block is inserted into the groove of the hub, the hollow cylinder moves toward the center of the groove under the action of the extrusion spring, and drives the cross convex head to be inserted into the cross groove of the connection block for connection. On the one hand, this structure is simple, which is convenient for disassembly and assembly between the hub and the blade, and reduces the cost of use; on the other hand, compared with the threaded connection method, this structure has stronger connectivity and stability, and avoids loosening after long-term use.

[0009] Preferably, the hub is vertically provided with moving grooves at the front and rear ends of the center of the four sides, and a T-shaped plate is slidably provided on the top of the moving groove, and the bottom of the T-shaped plate is connected to the corresponding position of the top of the corresponding hollow cylinder. The T-shaped plate moves along the moving groove driven by the hollow cylinder, and the moving groove is tightly fitted with the surface of the hollow cylinder to prevent debris from entering through the moving groove and hindering the use of the structure.

[0010] Preferably, a T-shaped groove is provided at the center of the lower part of the front and back sides of the blade, and corresponds to the T-shaped plate, and the upper part of the front side of the T-shaped plate is designed as a convex end. After the T-shaped plate is inserted into the T-shaped groove of the blade, on the one hand, the blade is double-connected from the outside and the bottom, ensuring the stability of the blade connection and use; on the other hand, it can be moved and separated from the blade under the drive of the convex end of the T-shaped plate, thereby facilitating the separation operation between the hub and the blade.

[0011] Preferably, the top center of the blade is longitudinally provided with a limiting groove, and the corresponding positions on both sides of the blade are provided with positioning holes. The blade can be connected to the corresponding structure through the limiting groove and the positioning hole.

[0012] Preferably, a wear-resistant sleeve is added to the outer side of the blade, and a guide rod is longitudinally inserted at the top center of the wear-resistant sleeve, and a limit plate is installed at the surface center and lower periphery of the guide rod, and the guide rod and the limit plate correspond to the positioning hole. The wear-resistant sleeve can be made of elastic wear-resistant material. After the wear-resistant sleeve is mounted on the surface of the blade, the guide rod and the limit plate can be inserted into the limit groove of the blade and rotated, so that the limit plate and the limit groove are misaligned. On the one hand, the wear-resistant sleeve can prevent the blade from direct wear, thereby increasing the service life of the blade; on the other hand, the wear-resistant sleeve can be replaced after long-term use, further reducing the wear rate of the blade.

[0013] Preferably, the upper surface of the guide rod is sleeved with a return spring, and the top and bottom ends of the return spring are respectively fitted with the top of the guide rod and the top of the wear-resistant sleeve, and positioning heads are installed on the upper, middle and lower sides of the inner wall of the wear-resistant sleeve, and correspond to the positioning holes. Under the action of the return spring, the guide rod makes the top of the limit plate fit tightly with the top of the inner cavity of the limit groove, and the positioning head is inserted into the inside of the positioning hole. On the one hand, it can prevent the blade and the wear-resistant sleeve from self-separation during rotation; on the other hand, the positioning head and the positioning hole ensure that the connection between the blade and the wear-resistant sleeve will not be misaligned.

[0014] Compared with the prior art, the utility model provides an energy-saving fan blade, which has the following beneficial effects:

[0015] The energy-saving fan blade is connected by inserting the connecting block of the blade into the groove of the hub, and the hollow cylinder moves toward the center of the groove under the action of the extrusion spring, and drives the cross protrusion to be inserted into the cross groove of the connecting block for connection. In this way, on the one hand, the structure is simple, and the disassembly and assembly operation between the hub and the blade is convenient, and the use cost is reduced; on the other hand, compared with the threaded connection method, the structure has stronger connectivity and stability, and avoids loosening after long-term use.

[0016] The energy-saving fan blade is connected by inserting the connecting block of the blade into the groove of the hub. The hollow cylinder moves toward the center of the groove under the action of the extrusion spring and drives the cross protrusion to be inserted into the cross groove of the connecting block. With this method, on the one hand, the structure is simple, which facilitates the disassembly and assembly between the hub and the blade and reduces the cost of use. On the other hand, compared with the threaded connection method, the structure has stronger connectivity and stability, and avoids loosening after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the blade and its connection structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the partial structure of the wheel hub of the utility model;

[0020] Figure 4 This is a schematic diagram of the wear-resistant sleeve and its connection structure of the utility model.

[0021] In the figure: 1. hub; 2. blades; 3. wear-resistant sleeve; 4. groove; 5. movable groove; 6. hollow cylinder; 7. extrusion spring; 8. cross protrusion; 9. T-shaped plate; 10. T-shaped slot; 11. connecting block; 12. cross slot; 13. limit slot; 14. positioning hole; 15. guide rod; 16. limit plate; 17. reset spring; 18. positioning head. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides a technical solution, an energy-saving fan blade, including: Figure 1 , Figure 3 , a wheel hub 1, and a groove 4 opened at the center of the wheel hub 1, and a hollow cylinder 6 is added at the front and rear ends of the groove 4, and the inner cavity of the hollow cylinder 6 is connected to a compression spring 7 and fits with the inner wall of the wheel hub 1;

[0024] The cross convex head 8 is arranged at the center of the inner cavity of the hollow cylinder 6, and the cross convex head 8 is designed as a whole in a cylindrical shape, and a convex end is designed at the center of the outer periphery;

[0025] See also Figure 2 The blades 2 are arranged around the hub 1, and the bottom center of the blades 2 is installed with a connection block 11. The center of the front and back sides of the connection block 11 are provided with a cross groove 12, which corresponds to the cross protrusion 8. After the connection block 11 of the blade 2 is inserted into the groove 4 of the hub 1, the hollow cylinder 6 moves to the center of the groove 4 under the action of the extrusion spring 7, and drives the cross protrusion 8 to be inserted into the cross groove 12 of the connection block 11 for connection. On the one hand, this structure is simple, which is convenient for disassembly and assembly between the hub 1 and the blade 2, and reduces the cost of use; on the other hand, compared with the threaded connection method, this structure has stronger connectivity and stability, and avoids loosening after long-term use.

[0026] See also Figure 3 The front and rear ends of the hub 1 are vertically provided with moving grooves 5, and the tops of the moving grooves 5 are slidably provided with T-shaped plates 9, and the bottoms of the T-shaped plates 9 are connected to the corresponding tops of the corresponding hollow cylinders 6. The T-shaped plates 9 move along the moving grooves 5 driven by the hollow cylinders 6, and the moving grooves 5 are closely fitted to the surfaces of the hollow cylinders 6, so that debris cannot enter through the moving grooves 5 and hinder the use of the structure.

[0027] See also Figure 2 A T-slot 10 is provided at the center of the lower part of the front and back sides of the blade 2, and corresponds to the T-plate 9, and the upper part of the front side of the T-plate 9 is designed as a convex end. After the T-plate 9 is inserted into the T-slot 10 of the blade 2, on the one hand, the blade 2 is doubly connected from the outside and the bottom, ensuring the stability of the blade 2 during connection and use; on the other hand, it can be moved and separated from the blade 2 under the drive of the convex end of the T-plate 9, thereby facilitating the separation operation between the hub 1 and the blade 2. A limiting groove 13 is longitudinally provided at the center of the top of the blade 2, and positioning holes 14 are provided at the corresponding positions on both sides of the blade 2. The blade 2 can be connected to the corresponding structure through the limiting groove 13 and the positioning hole 14.

[0028] See also Figure 4 , a wear-resistant sleeve 3 is added to the outer side of the blade 2, and a guide rod 15 is longitudinally inserted at the top center position of the wear-resistant sleeve 3, and a limit plate 16 is installed at the surface center and lower periphery of the guide rod 15, and the guide rod 15 and the limit plate 16 correspond to the positioning hole 14. The wear-resistant sleeve 3 can be made of elastic wear-resistant material such as polyester elastomer. After the wear-resistant sleeve 3 is sleeved on the surface of the blade 2, the guide rod 15 and the limit plate 16 can be inserted into the limit groove 13 of the blade 2 and rotated, so that the limit plate 16 and the limit groove 13 are misaligned. On the one hand, the wear-resistant sleeve 3 can prevent the blade 2 from being directly worn, thereby increasing the service life of the blade 2; on the other hand, the wear-resistant sleeve 3 can be replaced after long-term use, further reducing the wear rate of the blade 2. The upper surface of the guide rod 15 is sleeved with a return spring 17, and the top and bottom of the return spring 17 are respectively fitted with the top of the guide rod 15 and the top of the wear-resistant sleeve 3, and positioning heads 18 are installed on the upper, middle and lower sides of the inner wall of the wear-resistant sleeve 3, and correspond to the positioning holes 14. Under the action of the return spring 17, the guide rod 15 makes the top of the limit plate 16 fit tightly with the top of the inner cavity of the limit groove 13, and the positioning head 18 is inserted into the inside of the positioning hole 14. On the one hand, it can prevent the blade 2 and the wear-resistant sleeve 3 from self-separation during rotation; on the other hand, the positioning head 18 and the positioning hole 14 ensure that the connection between the blade 2 and the wear-resistant sleeve 3 will not be misaligned.

[0029] This solution: After the connecting block 11 of the blade 2 is inserted into the groove 4 of the hub 1, the hollow cylinder 6 moves toward the center of the groove 4 under the action of the extrusion spring 7, and drives the cross convex head 8 to be inserted into the cross groove 12 of the connecting block 11 for connection. The T-shaped plate 9 moves along the movable groove 5 driven by the hollow cylinder 6. The T-shaped plate 9 is inserted into the T-shaped groove 10 of the blade 2 and can be moved and separated from the blade 2 under the drive of the convex end of the T-shaped plate 9. After the wear-resistant sleeve 3 is sleeved on the surface of the blade 2, the guide rod 15 and the limit plate 16 can be inserted into the limit groove 13 of the blade 2 and rotated, so that the limit plate 16 and the limit groove 13 are misaligned. Under the action of the reset spring 17, the guide rod 15 makes the top of the limit plate 16 fit tightly with the top of the inner cavity of the limit groove 13, and the positioning head 18 is inserted into the inside of the positioning hole 14.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving fan blade, characterized in that: include: A wheel hub (1), and a groove (4) formed at the center of the wheel hub (1), wherein the front and rear ends of the groove (4) are provided with a hollow cylinder (6), the inner cavity of the hollow cylinder (6) is connected to a compression spring (7) and fits with the inner wall of the wheel hub (1); A cross convex head (8) is arranged at the center of the inner cavity of the hollow cylinder (6), and the cross convex head (8) is designed as a whole in a cylindrical shape, and has convex ends designed at the center of the outer periphery; The blades (2) are arranged around the hub (1), and a connecting block (11) is installed at the bottom center of the blade (2). The center of the front and back sides of the connecting block (11) is provided with a cross groove (12) corresponding to the cross protrusion (8).

2. The energy-saving fan blade according to claim 1, characterized in that: The hub (1) is provided with vertical movable grooves (5) at the front and rear ends of the center of the periphery, and a T-shaped plate (9) is slidably provided at the top of the movable groove (5), and the bottom of the T-shaped plate (9) is connected to the corresponding position of the top of the corresponding hollow cylinder (6).

3. The energy-saving fan blade according to claim 2, characterized in that: T-shaped grooves (10) are provided at the central positions of the lower parts of the front and back sides of the blade (2) and correspond to the T-shaped plates (9), and the upper part of the front side of the T-shaped plates (9) is designed as a convex end.

4. The energy-saving fan blade according to claim 1, characterized in that: A limiting groove (13) is longitudinally provided at the center position of the top of each blade (2), and positioning holes (14) are provided at corresponding positions on both sides of the blade (2).

5. The energy-saving fan blade according to claim 4, characterized in that: A wear-resistant sleeve (3) is provided on the outer side of the blade (2), and a guide rod (15) is longitudinally inserted at the center position of the top of the wear-resistant sleeve (3), and a limit plate (16) is installed at the center of the surface and around the lower part of the guide rod (15), and the guide rod (15) and the limit plate (16) correspond to the positioning hole (14).

6. The energy-saving fan blade according to claim 5, characterized in that: The upper surface of the guide rod (15) is sleeved with a return spring (17), and the top and bottom ends of the return spring (17) are respectively fitted with the top of the guide rod (15) and the top of the wear-resistant sleeve (3), and positioning heads (18) are installed on the upper, middle and lower sides of the inner wall of the wear-resistant sleeve (3) and correspond to the positioning holes (14).

Images