A seagull-shaped splitter blade for a three-dimensional impeller

Abstract

The utility model discloses a seagull-shaped splitter blade for a three-dimensional impeller, comprising a hub, a plurality of splitter blades and a plurality of connecting blocks, each of the splitter blades is a seagull-shaped structure, the side wall of the hub is provided with a plurality of mounting grooves equidistantly along the circumferential direction, each of the side walls of the connecting blocks is fixedly connected with a clamping block, each of the side walls of the clamping block is symmetrically fixedly connected with a plurality of springs, the other ends of the plurality of springs on the same side are commonly fixedly connected with a stopper, each of the side walls of the connecting blocks is symmetrically rotatably connected with a connecting rod, the other end of each connecting rod is rotatably connected with a slider, and each of the side walls of the splitter blades is provided with a slide groove. The advantages are: the damaged part can be replaced by disassembling it separately, without replacing the entire three-dimensional impeller, thus reducing the waste of materials, and the maintenance cycle is short, and the disassembly operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fans, in particular to a seagull-shaped splitter blade for a three-dimensional impeller. Background Art

[0002] The three-dimensional flow impeller is a common axial flow fan impeller structure with multiple blades. The design of the three-dimensional flow impeller makes it have higher efficiency. The impeller structure can suck the fluid from the center of the pump at a higher speed and diffuse it outward, reducing energy loss.

[0003] After searching, the patent with publication number CN106762824B: A three-dimensional impeller of an axial flow fan with a vein-like structure and a seagull-shaped splitter blade, including a hub, a shaft sleeve fixed to the hub with a connector; also including a twisted blade and a splitter blade fixedly connected to the hub; the twisted blade includes a suction surface and a pressure surface; an airfoil groove is provided at the top of the twisted blade; a vein-like groove is provided on the upper half of the pressure surface of the twisted blade, and the airfoil groove communicates with the vein-like groove through an air outlet; a small wing protrusion is provided at the tail of the suction surface of the twisted blade; a parabolic hole is provided on the twisted blade; a splitter blade is provided between two adjacent twisted blades; the height of the splitter blade is less than half the height of the twisted blade. It achieves the effect of reducing secondary flow phenomenon, preventing boundary layer separation, inhibiting the generation of blade wake vortex, reducing turbulent dissipation and flow loss, and has the characteristics of high efficiency, good performance, low noise and energy saving, but it still has some shortcomings:

[0004] The splitter blades and twist blades are usually welded to the hub. When some of the blades are damaged, they need to be removed with professional tools and re-welded with new blades or the entire three-dimensional impeller is directly replaced. Direct replacement causes waste of materials, and the repair cycle of re-welding is long and the operation is cumbersome. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a seagull-shaped splitter blade for a three-dimensional impeller.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A seagull-shaped splitter blade for a three-dimensional impeller comprises a hub, a plurality of splitter blades and a plurality of connecting blocks, each of the splitter blades is of a seagull-shaped structure, a plurality of mounting grooves are equidistantly provided on the side wall of the hub along the circumferential direction, a clamping block is fixedly connected to each side wall of the connecting block, a plurality of springs are symmetrically fixedly connected to each side wall of the clamping block, a plurality of springs on the same side are commonly fixedly connected to a stop block at the other ends, each side wall of the connecting block is symmetrically rotatably connected to a connecting rod, a slider is rotatably connected to the other end of each connecting rod, a slide groove is provided on the side wall of each splitter blade, and two adjacent sliders are slidably connected to the side wall of the slide groove.

[0008] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: each of the connecting blocks is an arc-shaped structure, and each of the side walls of the connecting block is fixedly connected with a bending and twisting blade.

[0009] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: the side wall of the hub is penetrated by a sleeve, the side wall of the sleeve is fixedly connected with a connecting piece, the side wall of the hub is symmetrically provided with a plurality of first threaded holes about each mounting groove, each side wall of the connecting block is provided with a second threaded hole corresponding to the position of the first threaded hole, and each corresponding first threaded hole is connected to the second threaded hole by a bolt.

[0010] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: the cross-section of each of the sliding grooves and the corresponding sliding block is a T-shaped structure.

[0011] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: each of the abutting blocks slides against the corresponding side wall of the installation groove.

[0012] The utility model has the advantages that, by setting the installation groove, the connection block, the clamping block, the spring, the abutment block, the first threaded hole, the second threaded hole and the connecting rod component, the abutment block slides against the side wall of the installation groove during installation, the installation groove gradually decreases from the outside to the inside, the abutment block is squeezed by the side wall of the installation groove to compress the spring, and the elastic force of the spring finally makes the abutment block tightly abut against the side wall of the installation groove, the connection block is preliminarily positioned, and then the connection block is fixed to the wheel hub through the first threaded hole, the second threaded hole and the bolts, when part of the blades are damaged, the damaged part can be replaced by disassembling it separately, without replacing the entire three-dimensional impeller, reducing the waste of materials, and the maintenance cycle is short, and the disassembly operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic diagram of the overall structure of a seagull-shaped splitter blade for a three-dimensional impeller.

[0014] Figure 2The utility model is a schematic structural diagram of a mounting groove and a first threaded hole portion in a seagull-shaped splitter blade for a three-dimensional impeller.

[0015] Figure 3 The utility model is a schematic structural diagram of a connecting block and a clamping block part in a seagull-shaped splitter blade for a three-dimensional impeller.

[0016] Figure 4 It is an enlarged schematic diagram of the structure of part A of a seagull-shaped splitter blade for a three-dimensional impeller proposed by the utility model.

[0017] Figure 5 The utility model is a schematic structural diagram of a splitter blade and a chute part in a seagull-shaped splitter blade for a three-dimensional impeller.

[0018] In the figure: 1 hub, 2 connecting piece, 3 sleeve, 4 bending and twisting blade, 5 connecting block, 6 splitter blade, 7 mounting groove, 8 first threaded hole, 9 connecting rod, 10 clamping block, 11 spring, 12 stop block, 13 second threaded hole, 14 slide groove, 15 slider. Implementation

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] Reference Figure 1-Figure 5 As shown, a seagull-shaped splitter blade for a three-dimensional impeller includes a hub 1, a plurality of splitter blades 6 and a plurality of connecting blocks 5, each of the splitter blades 6 is of a seagull-shaped structure, a plurality of mounting grooves 7 are equidistantly provided on the side wall of the hub 1 along the circumferential direction, a clamping block 10 is fixedly connected to the side wall of each connecting block 5, a plurality of springs 11 are symmetrically fixedly connected to the side wall of each clamping block 10, a plurality of springs 11 are fixedly connected to the other ends of the plurality of springs 11 on the same side, a stop block 12 is fixedly connected to the other ends of each connecting block 5, a connecting rod 9 is symmetrically rotatably connected to the side wall of each connecting rod 9, a slider 15 is rotatably connected to the other end of each connecting rod 9, a slide groove 14 is provided on the side wall of each splitter blade 6, and two adjacent sliders 15 are slidably connected to the side wall of the slide groove 14.

[0021] Each connection block 5 is of an arc-shaped structure, so that it can fit tightly with the side wall of the hub 1, and a bending and twisting blade 4 is fixedly connected to the side wall of each connection block 5.

[0022] A shaft sleeve 3 passes through the side wall of the hub 1, and a connecting piece 2 is fixedly connected to the side wall of the shaft sleeve 3. The shaft sleeve 3 and the hub 1 are installed and fixed by the connecting piece 2. A plurality of first threaded holes 8 are symmetrically provided on the side wall of the hub 1 about each installation groove 7, and a second threaded hole 13 is provided on the side wall of each connecting block 5 corresponding to the position of the first threaded hole 8. Each corresponding first threaded hole 8 is connected to the second threaded hole 13 by bolts, so that a plurality of connecting blocks 5 can be installed and fixed. When some blades are damaged, it is only necessary to remove the corresponding connecting block 5 to replace the blade, and the operation is relatively convenient.

[0023] The cross-section of each slide groove 14 and the corresponding slider 15 is a T-shaped structure, so that the slider 15 will not fall off the slide groove 14 when sliding against the side wall of the slide groove 14 .

[0024] Each stop block 12 slides against the corresponding side wall of the installation groove 7. The installation groove 7 gradually decreases from the outside to the inside. When the stop block 12 slides against the side wall of the installation groove 7, it is squeezed and the spring 11 is compressed. Under the action of the elastic force of the spring 11, the stop block 12 is finally tightly pressed against the side wall of the installation groove 7 to preliminarily position the connecting block 5.

[0025] During installation, first make the stop block 12 slide against the side wall of the installation groove 7, and the installation groove 7 gradually decreases from the outside to the inside. The stop block 12 is squeezed by the side wall of the installation groove 7, thereby compressing the spring 11. The elastic force of the spring 11 finally makes the stop block 12 tightly against the side wall of the installation groove 7, and the connecting block 5 is preliminarily positioned. Then, the connecting block 5 and the hub 1 are installed and fixed through the first threaded hole 8 and the second threaded hole 13 and the bolts. When some of the diverter blades 6 or the bending and twisting blades 4 are damaged, the bolts of the damaged part of the connecting block 5 can be removed separately to release the limit on the connecting block 5, and then the connecting block 5 is pulled to make the stop block 12 slide against the side wall of the installation groove 7, thereby driving the clamping block 10 and the stop block 12 to slide out of the installation groove 7, and then the connecting block 5 with the new blade is installed. Repeat the above installation steps to install the connecting block 5 without replacing the entire three-dimensional impeller, reducing material waste, and the maintenance cycle is short, and the disassembly and assembly operation is more convenient.

Claims

1. A seagull-shaped splitter blade for a three-dimensional impeller, comprising a hub (1), a plurality of splitter blades (6) and a plurality of connecting blocks (5), characterized in that: Each of the splitter blades (6) is of a seagull-shaped structure. The side wall of the hub (1) is provided with a plurality of mounting grooves (7) equidistantly arranged along the circumferential direction. The side wall of each of the connecting blocks (5) is fixedly connected to a clamping block (10). The side wall of each of the clamping blocks (10) is symmetrically fixedly connected to a plurality of springs (11). The other ends of the plurality of springs (11) on the same side are commonly fixedly connected to a stop block (12). The side wall of each of the connecting blocks (5) is symmetrically rotatably connected to a connecting rod (9). The other end of each of the connecting rods (9) is rotatably connected to a slider (15). The side wall of each of the splitter blades (6) is provided with a slide groove (14). Two adjacent sliders (15) are slidably connected to the side wall of the slide groove (14).

2. A seagull-shaped splitter blade for a three-dimensional impeller according to claim 1, characterized in that: Each of the connection blocks (5) is an arc-shaped structure, and a bending and twisting blade (4) is fixedly connected to the side wall of each of the connection blocks (5).

3. The seagull-shaped splitter blade for a three-dimensional impeller according to claim 1, characterized in that: The side wall of the wheel hub (1) is penetrated by a shaft sleeve (3), the side wall of the shaft sleeve (3) is fixedly connected to a connecting piece (2), the side wall of the wheel hub (1) is symmetrically provided with a plurality of first threaded holes (8) about each mounting groove (7), the side wall of each connecting block (5) is provided with a second threaded hole (13) at a position corresponding to the first threaded hole (8), and each corresponding first threaded hole (8) is connected to the second threaded hole (13) by a bolt.

4. The seagull-shaped splitter blade for a three-dimensional impeller according to claim 1, characterized in that: The cross-section of each sliding groove (14) and the corresponding sliding block (15) is a T-shaped structure.

5. The seagull-shaped splitter blade for a three-dimensional impeller according to claim 1, characterized in that: Each of the abutment blocks (12) slides against a corresponding side wall of the installation slot (7).

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