Axial flow fan with impeller

Abstract

The utility model discloses an axial flow fan with an impeller, which relates to the field of ventilation equipment, and adopts the technical scheme that the axial flow fan comprises a shaft body and the impeller, the impeller is detachably connected with a cross rod, the cross rod is fixed with the impeller through a plurality of bolts, the cross rod is in threaded connection with an ejector rod, and the shaft body is provided with a positioning hole; the impeller is provided with a groove allowing the shaft body to be embedded therein, and when the ejector rod abuts against the positioning hole and rotates clockwise, the impeller is far away from the shaft body. By arranging the cross rod and the ejector rod, an operator only needs to fix the cross rod on the impeller through a bolt and then screw the ejector rod into and abut against the positioning hole when disassembling the impeller, and the impeller can be gradually separated from the shaft body under the action of the cross rod when the operator rotates the ejector rod clockwise, so that the operation of disassembling the impeller is completed; through the arrangement, the disassembly efficiency is improved, the possible damage to the impeller and the shaft body caused by a traditional mode is avoided, and therefore the overall service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of ventilation equipment, and more specifically, it relates to an axial flow fan provided with an impeller. Background Art

[0002] The impeller is a key component on the axial flow fan, and it has wide applications in air conditioner outdoor units, industrial ventilation, and cooling systems. The design and material selection of the impeller have an important impact on its performance. In existing axial flow fans, the impeller and the shaft body are usually fixed by a tight fit. With the long-term operation of the equipment, the connection between the impeller and the shaft body becomes difficult to disassemble due to accumulated dust, rust, and other problems, increasing the difficulty and time cost of maintenance. Traditional disassembly methods usually require using external force to pry the impeller forcefully, which is difficult to operate and may damage the impeller or the shaft body.

[0003] Therefore, a simple impeller disassembly method is needed to enable operators to easily and safely disassemble the impeller. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide an axial flow fan provided with an impeller.

[0005] The above technical purpose of the present utility model is achieved through the following technical solutions: an axial flow fan provided with an impeller, including a shaft body and an impeller. A cross bar is detachably connected to the impeller, and the cross bar is fixed to the impeller by a plurality of bolts. A top rod is threadedly connected to the cross bar. A positioning hole is opened on the shaft body, and a groove for accommodating the shaft body to be embedded is opened on the impeller. When the top rod abuts against the positioning hole and rotates clockwise, the impeller moves away from the shaft body.

[0006] The present utility model is further provided as: threaded holes matching the bolts are opened on the impeller, and the impeller and the cross bar are fixed by screwing the bolts into the threaded holes.

[0007] The present utility model is further provided as: a sliding groove is slidably connected to the cross bar, and the bolts are slidably connected in the sliding groove.

[0008] The present utility model is further provided as: a protection groove communicating with the sliding groove is opened on the top surface of the cross bar. The bolt includes a bolt head at one end thereof, and the depth of the protection groove is greater than the thickness of the bolt head.

[0009] The present utility model is further provided as: a through hole for the top rod to pass through is opened on the cross bar, and threads are provided in the through hole. A limiting block is provided at one end of the top rod, and the width of the limiting block is greater than the diameter of the through hole.

[0010] The present utility model is further provided as: two bolts are provided and symmetrically arranged on the cross bar.

[0011] The utility model is further configured such that: a protection boss is provided on the impeller, the protection boss can accommodate the ejector rod to pass through, and the height of the protection boss is less than the length of the bolt.

[0012] In summary, the utility model has the following beneficial effects: by providing the cross bar and the ejector rod, when an operator disassembles the impeller, the cross bar only needs to be fixed to the impeller through bolts, and then the ejector rod is screwed in and abutted against the positioning hole. As the operator rotates the ejector rod clockwise, at this time, the impeller will gradually disengage from the shaft body under the action of the cross bar, thus completing the operation of disassembling the impeller. At the same time, the symmetrically arranged bolts also ensure that the cross bar and the impeller are evenly stressed and not easily damaged. And by providing the chute, the distance between the two bolts can be adjusted and changed, so that more different models and sizes of impellers can be adapted, improving the versatility of the equipment. Through the above settings, the disassembly efficiency is improved, the damage that may be caused to the impeller and the shaft body by the traditional method is avoided, and thus the overall service life of the equipment is prolonged. Description of the Drawings

[0013] Figure 1 is a structural schematic diagram of the utility model;

[0014] Figure 2 is a partial cross-sectional view of the utility model;

[0015] Figure 3 is Figure 2 an enlarged schematic view of part A in

[0016] In the figure: 1, shaft body; 2, impeller; 3, cross bar; 4, bolt; 5, ejector rod; 6, positioning hole; 7, groove; 8, threaded hole; 9, chute; 10, protection groove; 11, bolt head; 12, through hole; 13, limiting block; 14, protection boss. Specific Embodiments

[0017] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0018] To better describe and illustrate the embodiments of the present application, one or more drawings may be referred to, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of any one of the inventive creations of the present application, the currently described embodiments, or the preferred modes.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the positional relationship shown in the drawings. It is only for the convenience of describing the present utility model, rather than indicating that the device referred to must have a specific orientation or operate in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0021] The present utility model will be described in detail below with reference to the drawings and embodiments.

[0022] An axial flow fan provided with an impeller, as Figure 1 shown, includes a shaft body 1 and an impeller 2. A cross bar 3 is detachably connected to the impeller 2. The cross bar 3 is fixed to the impeller 2 by a plurality of bolts 4. Specifically, two bolts 4 are provided and symmetrically arranged on the cross bar 3. Threaded holes 8 matching the bolts 4 are formed in the impeller 2. The impeller 2 and the cross bar 3 are fixed by screwing the bolts 4 into the threaded holes 8. The symmetrically arranged bolts 4 can ensure that the impeller 2 is evenly stressed during rotation, avoiding deformation or damage caused by uneven stress. Moreover, the symmetric layout of the bolts 4 simplifies the design, makes the structure more compact, and is convenient for manufacturing and maintenance. The design of the threaded holes 8 ensures the precise fixation between the impeller 2 and the cross bar 3, improves the reliability of the connection. At the same time, the threaded holes 8 make it easy to screw the bolts 4 in and out, facilitating the disassembly and replacement between the cross bar 3 and the impeller 2.

[0023] Specifically, a ejector rod 5 is threadedly connected to the cross bar 3. A positioning hole 6 is formed in the shaft body 1, and a groove 7 for accommodating the shaft body to be inserted is formed in the impeller 2. When the ejector rod 5 abuts against the positioning hole 6 and rotates clockwise, the impeller 2 moves away from the shaft body 1. By providing the cross bar 3 and the ejector rod 5, when the operator disassembles the impeller 2, the cross bar 3 only needs to be fixed to the impeller 2 through the bolt 4, then the ejector rod 5 is screwed in and abuts against the positioning hole 6. As the operator rotates the ejector rod 5 clockwise, the impeller will gradually disengage from the shaft body 1 under the action of the cross bar 3, thus completing the operation of disassembling the impeller 2. When installing the impeller 2, the operator only needs to align the groove 7 on the impeller 2 with the shaft body 1 and insert it to complete the installation of the impeller 2. At the same time, the operator can also use a nylon cap to block the threaded hole to prevent the entry of dust and other impurities. Through the above settings, the disassembly efficiency is improved, and the damage that may be caused to the impeller 2 and the shaft body 1 in the traditional method is avoided, thereby extending the overall service life of the equipment. At the same time, since the operator has disassembled the ejector rod 5 and the cross bar 3 during the use of the impeller 2, it is ensured that the cross bar 3 and the ejector rod 5 can be reused multiple times, protecting the ejector rod 5 and the cross bar 3 and extending their service life. A through hole 12 for the ejector rod 5 to pass through is formed in the cross bar 3, and a limit block 13 is provided at one end of the ejector rod 5. The width of the limit block 13 is greater than the diameter of the through hole 12. By providing the limit block 13, the limit block 13 can prevent the ejector rod 5 from rotating excessively, which can play a limiting role and ensure the connection stability between the ejector rod 5 and the cross bar 3.

[0024] Further, a sliding groove 9 is slidably connected to the cross bar 3, and the bolt 4 is slidably connected in the sliding groove 9. A protection groove 10 communicating with the sliding groove 9 is formed on the top surface of the cross bar 3. The bolt 4 includes a bolt head 11 at one end thereof. The depth of the protection groove 10 is greater than the thickness of the bolt head 11. By providing the sliding groove 9, the operator can slide the bolt 4 to change the distance between the two bolts 4, so as to adapt to more different models and sizes of impellers 2, improving the versatility of the equipment. By providing the protection groove 10, the protection groove 10 can protect the bolt head 11 and prevent the bolt 4 from being damaged, extending the service life of the equipment.

[0025] A protection boss 14 is provided on the impeller 2. The protection boss 14 can accommodate the ejector rod 5 to pass through. The height of the protection boss 14 is less than the length of the bolt 4. By providing the protection boss 14 and the protection boss 14 can accommodate the ejector rod 5 to pass through, the ejector rod 5 is protected from damage during the operation of the impeller 2, reducing wear and extending the service life. By protecting the ejector rod 5 from damage, the service life of the impeller 2 and the entire fan is indirectly extended. At the same time, the protection boss 14 can serve as an additional support point, which helps to enhance the structural stability of the impeller 2.

[0026] The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. An axial flow fan provided with an impeller, comprising a shaft body and an impeller, characterized in that: A cross bar is detachably connected to the impeller. The cross bar is fixed to the impeller by a plurality of bolts. A jacking rod is threadedly connected to the cross bar. A positioning hole is formed in the shaft body. A groove for accommodating the shaft body to be embedded is formed in the impeller. When the jacking rod abuts against the positioning hole and rotates clockwise, the impeller moves away from the shaft body.

2. The axial flow fan with an impeller according to claim 1, characterized in that: Threaded holes matching the bolts are formed in the impeller. The impeller and the cross bar are fixed by screwing the bolts into the threaded holes.

3. The axial flow fan with an impeller according to claim 1, characterized in that: A sliding groove is slidably connected to the cross bar. The bolt is slidably connected in the sliding groove.

4. The axial flow fan with an impeller according to claim 3, characterized in that: A protection groove communicating with the sliding groove is formed in the top surface of the cross bar. The bolt includes a bolt head at one end thereof. The depth of the protection groove is greater than the thickness of the bolt head.

5. The axial flow fan with an impeller according to claim 1, characterized in that: A through hole for accommodating the jacking rod to pass through is formed in the cross bar. Threads are provided in the through hole. A limiting block is provided at one end of the jacking rod. The width of the limiting block is greater than the diameter of the through hole.

6. The axial flow fan with an impeller according to claim 1, characterized in that: There are two bolts which are symmetrically arranged on the cross bar.

7. The axial flow fan with an impeller according to claim 1, characterized in that: A protection boss is provided on the impeller. The protection boss can accommodate the jacking rod to pass through. The height of the protection boss is less than the length of the bolt.

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