Fan impeller and fan

Abstract

The utility model provides a fan impeller and a fan, relates to the technical field of agricultural equipment, and aims to optimize the structure of the fan impeller to a certain extent, improve the overhaul and maintenance efficiency of the fan impeller, reduce the maintenance cost and improve the operation flexibility. The utility model provides a fan impeller which comprises a spoke disc and a plurality of blades. The spoke disc comprises a main body part and a plurality of positioning parts, the positioning parts are arranged in the circumferential direction of the main body part at intervals, the blades correspond to the positioning parts, buckles are formed on the positioning parts, clamping holes are formed in the positions, corresponding to the buckles, of the blades, and the buckles penetrate through the clamping holes to be connected with the blades in a clamped mode.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural equipment, in particular to a fan impeller and a fan. Background Art

[0002] In an agricultural harvester, a fan can provide stable wind power output for a cleaning system to blow out sundries such as sand and straw, so as to ensure the cleaning effect of the cleaning system. The fan impeller is an important structure for the formation of air flow in the fan. Most of the existing fan impellers include a hub plate and blades, and the hub plate and the blades are of an integral structure to ensure stable operation.

[0003] Although this method can improve the service life of the overall structure to a certain extent, when a certain blade or a certain position of the hub plate is damaged, it will affect the output efficiency and operation stability of the overall structure, and only the whole can be replaced, resulting in an increase in the use cost and maintenance cost. Moreover, since the output efficiency of the fan is mostly controlled by the rotation speed, in some cases, due to the inability to remove the blades, the adjustment range of the fan will be limited.

[0004] Therefore, there is an urgent need to provide a fan impeller and a fan to solve the problems existing in the prior art to a certain extent. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a fan impeller and a fan to optimize the structure of the fan impeller to a certain extent, improve the overhaul and maintenance efficiency of the fan impeller, reduce the maintenance cost, and improve the operation flexibility.

[0006] A fan impeller provided by the utility model includes a hub plate and a plurality of blades; the hub plate includes a main body part and a positioning part, there are a plurality of the positioning parts, and they are arranged at intervals along the circumferential direction of the main body part, the blades are arranged corresponding to the positioning parts, and a buckle is formed on the positioning part, and a clamping hole is formed at a position corresponding to the buckle on the blade, and the buckle passes through the clamping hole to be clamped with the blade.

[0007] Wherein, the positioning part includes a connecting section and a bending section; one end of the connecting section is connected to the main body part, and the other end is connected to one end of the bending section, a positioning convex part is formed on the connecting section, and the other end of the bending section can move towards the direction close to the positioning convex part under pressure.

[0008] Specifically, a limiting concave part is formed at one end of the bending section corresponding to the positioning convex part.

[0009] Specifically, a positioning groove is formed at one end of the connecting section far from the bending section, and the end of the blade can be embedded in the positioning groove.

[0010] Specifically, a guiding inclined surface is formed at the end of the bent section.

[0011] Wherein, the main body part includes a positioning section and a spoke section; the positioning section has an annular structure, and the spoke section extends radially along the positioning section for supporting the positioning section.

[0012] Specifically, a connecting part is formed at the center of the positioning section for connecting a driving shaft. There are multiple spoke sections, and they converge radially along the positioning section to the connecting part.

[0013] Specifically, weight-reducing grooves are formed in both the positioning section and the spoke section, and the weight-reducing grooves make the cross-sections of the positioning section and the spoke section in an I-shaped structure.

[0014] Furthermore, the hub is made of nylon material.

[0015] Compared with the prior art, the blower impeller provided by the present utility model has the following advantages:

[0016] The blower impeller provided by the present utility model includes a hub and multiple blades; the hub includes a main body part and positioning parts. There are multiple positioning parts, and they are arranged at intervals along the circumference of the main body part. The blades are arranged corresponding to the positioning parts, and buckles are formed on the positioning parts, and card holes are formed at the positions of the blades corresponding to the buckles. The buckles pass through the card holes to be clamped with the blades.

[0017] From this analysis, it can be seen that the hub in this application is composed of a main body part and positioning parts, and the main body part has an annular structure. The positioning parts are evenly distributed along the circumference of the main body part. Through the positioning parts, a basis for the installation of the blades can be provided. And since buckles are formed on the positioning parts in this application, and card holes are formed at the positions of the blades corresponding to the buckles, therefore, the detachable connection between the blades and the hub can be realized through the cooperation of the buckles and the card holes. With the detachable blades, on the one hand, when overhauling or the blades are damaged, the damaged blades can be directly removed, so that it is not necessary to replace the whole impeller, which greatly improves the overhaul efficiency and reduces the maintenance cost. On the other hand, the number of connected blades can be increased or decreased according to specific requirements, so as to cooperate with the speed regulation system to have a larger output efficiency adjustment range and make the operation more flexible.

[0018] In addition, the present utility model also provides a blower, including the above-mentioned blower impeller.

[0019] The blower adopting the blower impeller provided by this application has a more flexible wind power output power adjustment range, and at the same time, the maintenance and replacement of the blades are simpler, so that the overhaul and replacement difficulty and cost can be greatly reduced, and the service life of the whole blower can be improved. Description of the Drawings

[0020] To more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 Schematic diagram of the overall structure of the fan impeller provided by the embodiment of the present utility model;

[0022] Figure 2 Schematic diagram of the structure of the middle disc in the fan impeller provided by the embodiment of the present utility model;

[0023] Figure 3 Partial enlarged view of the positioning part in the fan impeller provided by the embodiment of the present utility model.

[0024] In the figure: 1 - middle disc; 101 - main body part; 1011 - positioning section; 1012 - spoke section; 1013 - connecting part; 1014 - weight reduction groove; 102 - positioning part; 1021 - connecting section; 1022 - bending section; 1023 - positioning convex part; 1024 - limiting concave part; 1025 - positioning groove; 1026 - guiding inclined surface; 2 - blade. Specific embodiments

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application that is required to be protected, but only represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0026] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships in which the utility model product is usually placed during use. These are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0027] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0028] In the description of the embodiments of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] As used herein, the term "and / or" includes any one of the listed related items and any combination of any two or more items.

[0030] For ease of description, spatial relationship terms such as "above...", "upper part", "below...", and "lower part" can be used here to describe the relationship between one element and another as shown in the drawings. Such spatial relationship terms are intended to include different orientations of the device during use or operation in addition to the orientations depicted in the drawings.

[0031] The terms used herein are only for describing various examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. The terms "comprise", "include" and "have" list the stated features, quantities, operations, components, elements and / or combinations thereof that exist, but do not preclude the existence or addition of one or more other features, quantities, operations, components, elements and / or combinations thereof.

[0032] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings, but include changes in shape that occur during manufacturing.

[0033] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of this application. In addition, although the examples described herein have a variety of configurations, other configurations are possible, as will be apparent after understanding the disclosure of this application. Additionally, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or inability to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0034] As Figure 1 Combined Figure 2 As shown, the present utility model provides a fan impeller, including a hub 1 and a plurality of blades 2; the hub 1 includes a main body portion 101 and a positioning portion 102. There are a plurality of positioning portions 102, which are arranged at intervals along the circumference of the main body portion 101. The blades 2 are arranged corresponding to the positioning portions 102, and a buckle is formed on the positioning portion 102, and a card hole is formed at the position of the blade 2 corresponding to the buckle. The buckle passes through the card hole and is clamped with the blade 2.

[0035] Compared with the prior art, the fan impeller provided by the present utility model has the following advantages:

[0036] For the fan impeller provided by the present utility model, the hub 1 is composed of a main body portion 101 and a positioning portion 102, and the main body portion 101 is in an annular structure. The positioning portions 102 are evenly distributed along the circumference of the main body portion 101. Through the positioning portion 102, a basis for the installation of the blade 2 can be provided. Since a buckle is formed on the positioning portion 102 in this application, and a card hole is formed at the position of the blade 2 corresponding to the buckle, therefore, the detachable connection between the blade 2 and the hub 1 can be realized through the cooperation of the buckle and the card hole. With the detachable blade 2, on the one hand, when overhauling or the blade 2 is damaged, the damaged blade 2 can be directly removed, so that there is no need to replace the whole impeller, which greatly improves the overhaul efficiency and maintenance cost. On the other hand, the number of connected blades 2 can be increased or decreased according to specific needs, so as to cooperate with the speed regulation system to have a larger output efficiency adjustment range and make the operation more flexible.

[0037] Optionally, as Figure 2 Combined Figure 3As shown, the positioning portion 102 in the present application includes a connecting section 1021 and a bending section 1022; one end of the connecting section 1021 is connected to the main body portion 101, and the other end is connected to one end of the bending section 1022. A positioning convex portion 1023 is formed on the connecting section 1021, and when the other end of the bending section 1022 is pressed, it can move in a direction approaching the positioning convex portion 1023.

[0038] The positioning convex portion 1023 formed on the connecting section 1021 can cooperate with the bending section 1022 to form the above-mentioned buckle. When the blade 2 needs to be installed, press the bending section 1022 to make the end of the bending section 1022 move in a direction approaching the positioning convex portion 1023, so as to be able to reduce the interval between the two. Since the size of the card hole formed on the blade 2 is fixed, when the interval is reduced, the blade 2 can be removed. Correspondingly, when the blade 2 needs to be installed, press the bending section 1022 to make the bending section 1022 move in a direction approaching the positioning convex portion 1023 to reduce the interval between the two, so that the end of the bending section 1022 and the positioning convex portion 1023 can enter the card hole. Then, release the bending section 1022, and the bending section 1022 will naturally return and move in a direction away from the positioning convex portion 1023, so as to be able to eliminate the initially reduced distance, make the bending section 1022 open, and then realize the clamping with the card hole, realize the positioning of the blade 2, and complete the installation between the blade 2 and the hub plate 1.

[0039] Preferably, as Figure 3 shown, a limiting concave portion 1024 is formed at one end of the bending section 1022 corresponding to the positioning convex portion 1023 in the present application.

[0040] Through the formed limiting concave portion 1024, when the blade 2 passes through the end of the bending section 1022, it can be caught in the limiting concave portion 1024. Thus, the blade 2 can be limited through the limiting concave portion 1024, ensuring the stability of the rotation of the blade 2, and avoiding the problem that the blade 2 disengages from the bending section 1022 during rotation, causing the blade 2 to fall and damaging other blades 2 or the entire impeller.

[0041] Optionally, as Figure 3 shown, a positioning groove 1025 is formed at one end of the connecting section 1021 away from the bending section 1022, and the end of the blade 2 can be embedded in the positioning groove 1025.

[0042] When installing the blade 2, first insert one end of the blade 2 into the positioning groove 1025 to achieve the preliminary positioning of the blade 2. Then, move the blade 2 in the direction close to the positioning convex portion 1023 and press the bending section 1022 to reduce the distance between the bending section 1022 and the positioning convex portion 1023, so that the bending section 1022 and the positioning convex portion 1023 can enter the clamping hole simultaneously. After that, continue to move the blade 2 until it is snapped into the positioning groove 1025, and release the bending section 1022. The bending section 1022 moves away from the positioning convex portion 1023 to complete the limiting of the blade 2 and the installation of the blade 2 and the spoke plate 1.

[0043] Preferably, as Figure 3 shown, a guiding inclined surface 1026 is formed at the end of the bending section 1022 in the present application.

[0044] By using the guiding inclined surface 1026, when installing the blade 2, directly abut the blade 2 against the guiding inclined surface 1026. Under the guiding action of the inclined surface, the end of the bending section 1022 can be moved in the direction close to the positioning convex portion 1023, so that manual pressing is not required and the installation process is more convenient.

[0045] Optionally, as Figure 1 combined with Figure 2 shown, the main body portion 101 in the present application includes a positioning section 1011 and a spoke section 1012; the positioning section 1011 has an annular structure, and the spoke section 1012 extends radially along the positioning section 1011 to support the positioning section 1011, so that the main body portion 101 has higher structural strength.

[0046] Optionally, as Figure 2 shown, a connecting portion 1013 is formed at the center of the positioning section 1011 in the present application for connecting the drive shaft. There are multiple spoke sections 1012, and they converge radially along the positioning section 1011 to the connecting portion 1013.

[0047] Preferably, the number of the spoke sections 1012 in the present application is four, and they extend radially along the positioning section 1011 with the connecting portion 1013 as the center and form a cross-shaped structure, so that the force on the overall spoke plate 1 is more uniform and the structural strength is greater.

[0048] Optionally, as Figure 2 shown, weight-reducing grooves 1014 are formed in both the positioning section 1011 and the spoke section 1012 in the present application. The weight-reducing grooves 1014 make the cross-sections of the positioning section 1011 and the spoke section 1012 in an I-shaped structure.

[0049] On both sides of the positioning section 1011 and the spoke section 1012 in this application, the above-mentioned weight-reducing grooves 1014 are formed, so that the cross-sections of the positioning section 1011 and the spoke section 1012 can be in an I-shaped structure. On the one hand, the structural strength of the overall hub plate 1 can be ensured, and on the other hand, the weight of the hub plate 1 can also be reduced to a certain extent, thereby reducing the power input required during operation and saving energy loss.

[0050] Therefore, preferably, the hub plate 1 in this application is made of nylon material, which has a lighter mass and lower cost.

[0051] In addition, the present utility model also provides a fan, including the above-mentioned fan impeller.

[0052] The fan adopting the fan impeller provided in this application has a more flexible adjustable range of wind power output. At the same time, the maintenance and replacement of the blade 2 are simpler, so that the difficulty and cost of overhaul and replacement can be greatly reduced, and the service life of the overall fan can be improved.

[0053] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fan impeller, characterized in that: comprising a disc and a plurality of blades; The web disc includes a main body and a positioning part. There are multiple positioning parts that are spaced apart along the circumference of the main body. The blades are arranged corresponding to the positioning parts, and a buckle is formed on the positioning part. A clamping hole is formed at the position of the blade corresponding to the buckle, and the buckle passes through the clamping hole to be clamped with the blade.

2. The fan impeller according to claim 1, characterized in that: The positioning portion includes a connecting section and a bending section; One end of the connecting section is connected to the main body, and the other end is connected to one end of the bending section. A positioning convex portion is formed on the connecting section, and the other end of the bending section can be moved toward the direction approaching the positioning convex portion under pressure.

3. The fan impeller according to claim 2, characterized in that: The bending section forms a limited recess at one end corresponding to the positioning protrusion.

4. The fan impeller according to claim 2, characterized in that: A positioning groove is formed at one end of the connecting section away from the bending section, and the end of the blade can be embedded in the positioning groove.

5. The fan impeller according to claim 2, characterized in that: The end of the bending section is formed with a guiding inclined surface.

6. The fan impeller according to claim 1, characterized in that: The main body portion includes a positioning segment and a spoke segment; The positioning segment is in a circular ring structure, and the spoke segment extends along the radial direction of the positioning segment to support the positioning segment.

7. The fan impeller according to claim 6, characterized in that: A connecting portion is formed at the center of the positioning segment for connecting to a driving shaft. There are a plurality of spoke segments, which converge to the connecting portion along the radial direction of the positioning segment.

8. The fan impeller according to claim 6, characterized in that: The positioning segment and the spoke segment are both formed with weight-reducing grooves, and the weight-reducing grooves make the cross-sections of the positioning segment and the spoke segment present an I-shaped structure.

9. The fan impeller according to claim 1, characterized in that: The web is made of nylon material.

10. A fan, characterized in that: The fan impeller comprises the fan impeller according to any one of claims 1 to 9.

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