Blade angle adjustable impeller

Abstract

The present disclosure relates to the technical field of impellers, and one embodiment of the present disclosure provides an impeller with adjustable blade angle, which comprises a pair of supporting plates and a shaft sleeve, the supporting plates are fixedly connected at both ends of the shaft sleeve through bolts, a connecting block is arranged between the supporting plates, a connecting and fixing assembly is arranged between the connecting block and the supporting plates, a blade is arranged on the connecting block, an angle adjusting assembly is arranged between the connecting block and the blade, the angle adjusting assembly comprises a rotating groove, the rotating groove is arranged in the connecting block, one end of the blade is provided with a connecting shaft, the connecting shaft is rotatably sleeved in the rotating groove, a plurality of threaded grooves are arranged at one end of the connecting shaft, a pair of bolts are insertedly connected to the side surface of the connecting block, and the bolts are screwed into the threaded grooves. Through the above technical scheme, the technical problem that the blades with fixed angles in the prior art cannot be adaptively adjusted, the impeller is difficult to maintain high-efficiency operation under various working conditions, the overall efficiency of the equipment is reduced, and the energy consumption is increased is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of impeller-related technology, and more specifically, to an impeller with adjustable blade angle. Background Technology

[0002] In the field of fluid machinery, impellers, as core components, are widely used in equipment such as pumps, fans, and compressors. Their performance directly affects the equipment's efficiency and energy consumption. Currently, most impellers on the market typically use a fixed-angle blade design, integrally formed with the impeller body or connected in a non-removable manner. While this structural design ensures impeller stability to a certain extent, it also has many drawbacks. In actual use, different operating conditions have different requirements for the impeller blade angle. When parameters such as the working environment, medium flow rate, or pressure change, fixed-angle blades cannot adapt, making it difficult for the impeller to maintain efficient operation under various conditions, resulting in decreased overall equipment efficiency and increased energy consumption. Furthermore, if the blades wear or are damaged, due to their non-removable nature, the entire impeller often needs to be replaced, increasing maintenance costs and wasting resources. Moreover, with the diversification and refinement of industrial production, the performance requirements for impellers are becoming increasingly demanding, and fixed-angle, non-removable blades are no longer sufficient to meet the complex and ever-changing operating conditions.

[0003] Therefore, developing an impeller with adjustable blade angle to improve its adaptability under different operating conditions and reduce maintenance costs has become an urgent problem to be solved in the industry. Utility Model Content

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide an impeller with adjustable blade angle, which solves the technical problem in the prior art that fixed-angle blades cannot be adaptively adjusted, making it difficult for the impeller to maintain high-efficiency operation under various working conditions, resulting in a decrease in the overall efficiency of the equipment and an increase in energy consumption.

[0005] According to one aspect, at least one embodiment of the present disclosure provides an impeller with adjustable blade angle, comprising:

[0006] A pair of support plates and a bushing, wherein the support plates are fixedly connected to both ends of the bushing by bolts;

[0007] A plurality of connecting blocks and a connecting and fixing assembly are provided, wherein the connecting blocks are disposed between the support plates and the connecting and fixing assembly is disposed between the connecting blocks and the support plates;

[0008] The blade and the angle adjustment assembly are provided, wherein the blade is disposed on the connecting block and the angle adjustment assembly is disposed between the connecting block and the blade;

[0009] The angle adjustment component includes a rotating groove, which is formed inside the connecting block. One end of the blade is provided with a connecting shaft, which is rotatably fitted into the rotating groove. One end of the connecting shaft is provided with several threaded grooves. A pair of bolts are inserted and connected to the side surface of the connecting block, and the bolts are screwed into the threaded grooves.

[0010] As a further technical solution, the connecting and fixing assembly includes a plurality of positioning grooves, which are evenly opened around the surface of the support plate. Positioning strips are provided on both the upper and lower surfaces of the connecting block, and the positioning strips are inserted into the positioning grooves.

[0011] As a further technical solution, the connecting block and the support plate are fixedly connected by bolts, and the surface of the support plate is provided with an inner ring strip, which is attached to the side end face of the connecting block. The side end face of the connecting block has an arc-shaped transition structure.

[0012] As a further technical solution, the connecting block is provided with a bonding plate, and several bonding plates are bonded to the side surfaces of a pair of support plates, with the side end faces of adjacent bonding plates being bonded together.

[0013] As a further technical solution, the included angle between the plurality of the threaded grooves is 15°, and the bolt is screwed into the threaded grooves located at the top and bottom.

[0014] As a further technical solution, the cross-section of the connecting shaft has a T-shaped structure.

[0015] As a further technical solution, the joints where the bushings meet the surface of the support plate are both stepped structures.

[0016] As a further technical solution, a sealing plate is provided between the connecting shaft and the blade, and the sealing plate and the surface of the connecting block are sealed and slidably fitted together.

[0017] The beneficial effects of the embodiments disclosed herein are as follows:

[0018] In this disclosure, the angle adjustment assembly achieves flexible adjustment of the blade angle through the rotational engagement of the rotating groove and the connecting shaft, as well as the locking structure of the bolt and the threaded groove. When the operating conditions change, the blade can be rotated to a suitable angle and fixed as needed, so that the impeller can maintain efficient operation under different flow rate, pressure and other parameters. This solves the problem that fixed-angle blades cannot adapt to various operating conditions, avoids equipment efficiency reduction and energy consumption increase, improves the impeller's adaptability to complex operating conditions, and ensures that the equipment can operate stably and efficiently in different working environments. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0020] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0021] Figure 2 This is an isometric sectional view of the present disclosure;

[0022] Figure 3 This is another isometric sectional view of this disclosure;

[0023] Figure 4 This is an isometric view of the connecting block portion of this disclosure;

[0024] Figure 5 This is an isometric sectional view of the connecting block portion of this disclosure;

[0025] In the diagram: 1. Support plate; 2. Bushing; 3. Connecting block; 4. Blade; 5. Angle adjustment assembly; 5-1. Rotating groove; 5-2. Connecting shaft; 5-3. Threaded groove; 5-4. Bolt; 6. Connecting and fixing assembly; 6-1. Positioning groove; 6-2. Positioning strip; 6-3. Inner ring strip; 7. Adhesive plate; 8. Sealing plate. Detailed Implementation

[0026] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0027] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0028] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0029] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 this disclosure.

[0031] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] like Figures 1-5 As shown, it illustrates an impeller with adjustable blade angle according to an embodiment of the present disclosure, comprising:

[0033] A pair of support plates 1 and a bushing 2, wherein the support plates 1 are fixedly connected to both ends of the bushing 2 by bolts 5-4;

[0034] A plurality of connecting blocks 3 and a connecting and fixing assembly 6 are provided, wherein the connecting blocks 3 are all disposed between the support plates 1, and the connecting and fixing assembly 6 is disposed between the connecting blocks 3 and the support plates 1;

[0035] The blade 4 and the angle adjustment component 5 are provided. The blade 4 is disposed on the connecting block 3, and the angle adjustment component 5 is disposed between the connecting block 3 and the blade 4.

[0036] The angle adjustment component 5 includes a rotating groove 5-1, which is formed in the connecting block 3. One end of the blade 4 is provided with a connecting shaft 5-2, which is rotatably fitted into the rotating groove 5-1. One end of the connecting shaft 5-2 is provided with several threaded grooves 5-3. A pair of bolts 5-4 are inserted and connected to the side surface of the connecting block 3, and the bolts 5-4 are screwed into the threaded grooves 5-3.

[0037] In some examples, to achieve precise adjustment of the blade 4's tilt angle, an angle adjustment component 5 is designed. This component includes a rotating groove 5-1 formed within the connecting block 3. The connecting groove provides a rotation fulcrum for the connecting shaft 5-2. The blade 4 can rotate within the rotating groove 5-1 via the connecting shaft 5-2. When the blade 4 is adjusted to the target angle, the bolt 5-4 on the connecting block 3 is screwed into the threaded groove 5-3 of the connecting shaft 5-2, forming a rigid lock. For example, in ventilation equipment, turning the bolt 5-4 clockwise can adjust the blade 4 angle from 0° to 15°, increasing the air intake; adjusting counterclockwise can decrease the angle, increasing the air pressure. This flexible adjustment capability allows the impeller to adapt to different operating conditions.

[0038] The threaded grooves 5-3 are evenly distributed circumferentially along the connecting shaft 5-2, with each groove corresponding to a 15° angle increment. Combined with the precise positioning of the bolts 5-4, the inner wall of the rotating groove 5-1 is ground and polished. The clearance fit with the connecting shaft 5-2 ensures smooth rotation while preventing blade 4 vibration due to excessive clearance. For example, when the impeller rotates at high speed, the locking bolts 5-4 can withstand a large torque, preventing blade 4 angle deviation and ensuring stable airflow.

[0039] like Figures 1-5 As shown in the figure, the connecting and fixing assembly 6 in this embodiment includes a plurality of positioning grooves 6-1. The positioning grooves 6-1 are evenly opened around the surface of the support plate 1. Positioning strips 6-2 are provided on both the upper and lower surfaces of the connecting block 3. The positioning strips 6-2 are inserted into the positioning grooves 6-1. The connecting block 3 and the support plate 1 are fixedly connected by bolts 5-4. An inner ring strip 6-3 is provided on the surface of the support plate 1. The inner ring strip 6-3 is attached to the side end face of the connecting block 3. The side end face of the connecting block 3 has an arc-shaped transition structure.

[0040] In some examples, to achieve rapid positioning and disassembly of the connecting block 3, a connecting and fixing assembly 6 is designed. This assembly includes a positioning groove 6-1 formed on the surface of the support plate 1, corresponding to the positioning strips 6-2 on the two surfaces of the connecting block 3. After the positioning strips 6-2 are inserted into the positioning grooves 6-1, the connecting block 3 is fastened to the support plate 1 by bolts 5-4. This design allows for rapid installation and disassembly of a single connecting block 3 and also strengthens the connection between two support plates 1. The inner ring strip 6-3 of the support plate 1 fits tightly against the arc-shaped transition end face of the connecting block 3, which can limit the installation depth of the connecting block 3 and evenly transmit the radial load to the support plate 1, avoiding stress concentration.

[0041] The radius of curvature of the arc-shaped transition structure matches the inner ring bar 6-3, reducing fluid resistance by approximately 20% and making it suitable for hydraulic or pneumatic conveying applications. For example, when replacing connecting blocks 3 with different specifications, simply loosen bolts 5-4 and pull out positioning strips 6-2 to remove the old block and insert connecting block 3, without the need for additional calibration tools. This modular design allows the impeller to adapt to different numbers or angles of blades 4 by replacing connecting blocks 3. For example, when converting from a 6-blade 4-blade impeller to an 8-blade 4-blade impeller, only the connecting block 3 assembly needs to be replaced, significantly improving equipment versatility and maintenance efficiency.

[0042] For example, such as Figure 1 As shown, the connecting block 3 is provided with a bonding plate 7, and several bonding plates 7 are bonded to the side surface of a pair of support plates 1 around the perimeter, with the side end faces of adjacent bonding plates 7 being bonded together.

[0043] In some examples, the bonding plates 7 on the connecting block 3 are arranged in a ring array, closely fitting the side surface of the support plate 1 to form a continuous sealing structure. The side end faces of adjacent bonding plates 7 are butted together at an angle, and gaps can be eliminated by tightening with bolts 5-4 to prevent airflow or liquid leakage.

[0044] For example, such as Figure 5 As shown, the included angle between the plurality of threaded grooves 5-3 is 15°, and the bolts 5-4 are screwed into the threaded grooves 5-3 located at the top and bottom.

[0045] In some examples, the threaded grooves 5-3 are circumferentially distributed at a 15° angle, and the angle of the blade 4 is precisely adjusted by diagonal locking of the top and bottom bolts 5-4. For example, after loosening the bolts 5-4, the blade 4 can rotate around the connecting shaft 5-2, with one groove corresponding to every 15°, meeting the airflow guidance requirements of different operating conditions. When locked, the top and bottom bolts 5-4 form a diagonal constraint to prevent the blade 4 angle from shifting, ensuring the accuracy of airflow and air pressure control.

[0046] For example, such as Figure 3 As shown, the cross-section of the connecting shaft 5-2 has a T-shaped structure.

[0047] In some examples, the T-shaped cross-section of the connecting shaft 5-2 enhances torsional strength and rotational stability. The inner wall of the rotating groove 5-1 forms a surface contact, which has a higher load-bearing capacity than the line contact of a cylindrical shaft, and can prevent the blade 4 from axially moving during high-speed rotation.

[0048] For example, such as Figure 2 As shown, both ends of the bushing 2 have a stepped structure where they fit against the surface of the support plate 1.

[0049] In some examples, the stepped mating surfaces of the bushing 2 and the support plate 1 are interference-fitted, achieving axial positioning and radial sealing through multiple steps. The height difference formed by the stepped structure, fixed by the mating pin, can prevent insufficient connection strength between the bushing 2 and the support plate 1, while also avoiding media leakage. At the same time, the stepped design facilitates positioning and calibration during disassembly and assembly, shortening assembly time.

[0050] For example, such as Figure 2 As shown, a sealing plate 8 is provided between the connecting shaft 5-2 and the blade 4, and the sealing plate 8 is in a sealed sliding fit with the surface of the connecting block 3.

[0051] In some examples, the sealing plate 8 between the connecting shaft 5-2 and the blade 4 forms a seal with the surface of the connecting block 3, allowing the blade 4 to rotate while preventing media leakage. For example, when conveying corrosive gases, the chemical resistance of the sealing plate 8 prevents media penetration, and the PTFE coating on the sliding contact surface reduces the rotational resistance of the blade 4, ensuring both flexibility in angle adjustment and a tight seal.

[0052] In actual use: The two ends of the bushing 2 are fixedly connected to the support plate 1 using bolts 5-4, so that the support plate 1 is installed at both ends of the bushing 2. The positioning strips 6-2 on the upper and lower surfaces of the connecting block 3 are aligned with the positioning grooves 6-1 on the surface of the support plate 1 and inserted. The connecting block 3 is fixed to the support plate 1 using bolts 5-4, so that the connecting block 3 is positioned between the support plates 1, while the inner ring strip 6-3 is fitted against the side end face of the connecting block 3. The connecting shaft 5-2 at one end of the blade 4 is inserted into the rotating groove 5-1 inside the connecting block 3. The blade 4 is rotated according to the working conditions, so that the connecting shaft 5-2 rotates to the target angle within the rotating groove 5-1. Then, a pair of bolts 5-4 are inserted from the side surface of the connecting block 3 and screwed into the threaded groove 5-3 at one end of the connecting shaft 5-2 to fix the angle of the blade 4. The bonding plate 7 is installed and fitted around the side surface of the support plate 1, ensuring that the side end faces of adjacent bonding plates 7 are fitted together. After completing the impeller assembly, the impeller is installed on the equipment.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. An impeller with adjustable blade angle, characterized in that, include: A pair of support plates (1) and a bushing (2), wherein the support plates (1) are fixedly connected to both ends of the bushing (2) by bolts (5-4); A plurality of connecting blocks (3) and a connecting fixing component (6) are provided, wherein the connecting blocks (3) are all disposed between the support plates (1), and the connecting fixing component (6) is disposed between the connecting blocks (3) and the support plates (1); The blade (4) and the angle adjustment component (5) are provided, wherein the blade (4) is disposed on the connecting block (3) and the angle adjustment component (5) is disposed between the connecting block (3) and the blade (4); The angle adjustment component (5) includes a rotating groove (5-1) which is formed in the connecting block (3). One end of the blade (4) is provided with a connecting shaft (5-2), which is rotatably fitted into the rotating groove (5-1). One end of the connecting shaft (5-2) is provided with several threaded grooves (5-3). A pair of bolts (5-4) are inserted and connected to the side surface of the connecting block (3), and the bolts (5-4) are screwed into the threaded grooves (5-3).

2. The impeller with adjustable blade angle according to claim 1, characterized in that, The connecting and fixing component (6) includes several positioning grooves (6-1), which are evenly distributed around the surface of the support plate (1). The upper and lower surfaces of the connecting block (3) are provided with positioning strips (6-2), which are inserted into the positioning grooves (6-1).

3. The impeller with adjustable blade angle according to claim 2, characterized in that, The connecting block (3) and the support plate (1) are fixedly connected by bolts. The surface of the support plate (1) is provided with an inner ring strip (6-3). The inner ring strip (6-3) is attached to the side end face of the connecting block (3). The side end face of the connecting block (3) is an arc-shaped transition structure.

4. The impeller with adjustable blade angle according to claim 1, characterized in that, The connecting block (3) is provided with a bonding plate (7), and several bonding plates (7) are bonded to the side surface of a pair of support plates (1) around the perimeter, with the side end faces of adjacent bonding plates (7) being bonded together.

5. An impeller with adjustable blade angle according to claim 1, characterized in that, The plurality of said threaded grooves (5-3) are at an angle of 15° to each other, and the bolt (5-4) is screwed into the threaded grooves (5-3) located at the top and bottom.

6. The impeller with adjustable blade angle according to claim 1, characterized in that, The cross-section of the connecting shaft (5-2) is T-shaped.

7. An impeller with adjustable blade angle according to claim 1, characterized in that, Both ends of the bushing (2) are stepped structures where they fit against the surface of the support plate (1).

8. An impeller with adjustable blade angle according to claim 1, characterized in that, A sealing plate (8) is provided between the connecting shaft (5-2) and the blade (4), and the sealing plate (8) and the surface of the connecting block (3) are sealed and slidably fitted together.

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