Wear-resistant circulating fan rotor

Abstract

The utility model relates to the technical field of fan rotors, in particular to a wear-resistant circulating fan rotor which comprises a bottom plate, a shell and drainage blades. An air inlet hole is formed in the shell; the drainage blades are fixedly connected with the bottom plate and the shell; the drainage blades are arranged in the circumferential direction of the air inlet. The drainage blades are symmetrically arranged relative to the bottom plate; wear-resistant layers are further arranged on the drainage blades; the wear-resistant layer covers the surface of the drainage blade; an assembly hole is formed in the bottom plate; the axis of the assembly hole coincides with the axis of the air inlet hole. A dissipation groove is further formed in the bottom plate; the dissipation grooves are located between every two adjacent drainage blades. In the prior art, the service life of a rotor of a circulating fan can be seriously shortened due to the fact that a large number of solid particles are contained in flue gas, and a user needs to frequently replace the rotor. Compared with the prior art, the service life of the rotor is effectively prolonged, so that the replacement frequency is reduced.

Description

Technical Field

[0001] This utility model relates to the field of fan rotor technology, and in particular to a wear-resistant circulating fan rotor. Background Technology

[0002] Circulating fans are commonly used equipment in industrial production, widely applied in various gas conveying and ventilation systems. Due to the influence of the actual application environment, the gases conveyed are diverse. For example, depending on the application environment, the conveyed gas may be air, a mixture of other chemical substances, or flue gas. Although existing circulating fans can effectively convey different gases, when conveying flue gas, because flue gas contains a large number of solid particles, and the rotor of the circulating fan rotates at high speed, the blades in the rotor will continuously collide with the solid particles in the flue gas at high speed. With the increase of usage time, the blades will gradually be worn by solid particles, leading to uncontrollable deformation of the blades, resulting in reduced gas conveying efficiency or even failure of gas conveying capacity. Therefore, when conveying flue gas, the service life of the circulating fan rotor is greatly shortened, requiring frequent rotor replacement by the user. Utility Model Content

[0003] In view of the technical problems of the prior art, this utility model provides a wear-resistant circulating fan rotor.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0005] A wear-resistant circulating fan rotor includes: a base plate, a housing, and guide vanes; an air inlet is provided on the housing; the guide vanes are fixedly connected to the base plate and the housing; the guide vanes are arranged circumferentially along the air inlet; the guide vanes are symmetrically arranged about the base plate; a wear-resistant layer is also provided on the guide vanes; the wear-resistant layer covers the surface of the guide vanes; an assembly hole is provided on the base plate; the axis of the assembly hole coincides with the axis of the air inlet; a venting groove is also provided on the base plate; the venting groove is located between two adjacent guide vanes.

[0006] Furthermore, the housing includes a drainage surface; the drainage surface is fixedly connected to the drainage blades; the drainage surface is a closed ring to form an air inlet.

[0007] Furthermore, the drainage surface includes a drainage ramp, a drainage curved surface, and a reinforcing plate; the drainage ramp is fixedly connected to the drainage blade; the drainage ramp is fixedly connected to the drainage curved surface; the drainage curved surface is fixedly connected to the drainage blade; the drainage curved surface is fixedly connected to the reinforcing plate; and a gap is provided between the drainage curved surface and the reinforcing plate.

[0008] Furthermore, an angle is set between the radial direction of the guide vane and the air inlet; the guide vane is curved; the curvature of the guide vane matches the airflow direction to form a windward end and a windward surface.

[0009] Furthermore, a wear-resistant layer covers the windward end of the guide vanes; a wear-resistant layer covers the windward side of the guide vanes.

[0010] Furthermore, the wear-resistant layer is also provided with reinforcing strips; the reinforcing strips are fixedly connected to the wear-resistant layer; the reinforcing strips are arranged from one end of the guide vane to the other end; the reinforcing strips are perpendicular to the flow direction of the airflow.

[0011] Furthermore, the diffuser extends from the outer edge of the base plate towards the center of the base plate; one side of the diffuser is in contact with the windward side of the guide vane. Attached Figure Description

[0012] Figure 1 Overall anatomical diagram.

[0013] Figure 2 Overall sectional top view.

[0014] Figure 3 : Cross-sectional view of the drainage surface.

[0015] In the figure: 1. Base plate; 11. Assembly hole; 12. Dissipation groove; 2. Shell; 21. Air inlet; 22. Drainage surface; 221. Drainage slope; 222. Drainage curved surface; 223. Reinforcing plate; 3. Drainage blade; 31. Wear-resistant layer; 311. Reinforcing strip. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] A wear-resistant circulating fan rotor includes: a base plate 1, a housing 2, and guide vanes 3. The base plate 1 has mounting holes 11. The mounting holes 11 are matched with the rotating shaft of the circulating fan, allowing the rotating shaft to be fixedly connected to the base plate 1 through the mounting holes 11.

[0018] The housing 2 is disposed on both sides of the base plate 1. The housing 2 includes a drainage surface 22. The drainage surface 22 is a closed annulus to form an air inlet 21. The axis of the air inlet 21 coincides with the axis of the mounting hole 11. Specifically, the drainage surface 22 includes a drainage inclined surface 221, a drainage curved surface 222, and a reinforcing plate 223. The drainage inclined surface 221 is fixedly connected to the drainage curved surface 222. The drainage curved surface 222 is fixedly connected to the reinforcing plate 223. A gap is provided between the drainage curved surface 222 and the reinforcing plate 223.

[0019] The guide vane 3 is fixedly connected to the base plate 1. The guide vane 3 is also fixedly connected to the guide slope 221 and the guide curved surface 222. Simultaneously, the guide vane 3 is symmetrically arranged about the base plate 1. The guide vane 3 is arranged circumferentially along the air inlet 21. An angle is formed between the guide vane 3 and the radial direction of the air inlet 21. The guide vane 3 is curved. The curvature direction of the guide vane 3 matches the airflow direction to form a windward end and a windward surface. A wear-resistant layer 31 is also provided on the guide vane 3. The wear-resistant layer 31 covers the windward end of the guide vane 3. The wear-resistant layer 31 covers the windward surface of the guide vane 3. A reinforcing strip 311 is also provided on the wear-resistant layer 31. The reinforcing strip 311 is fixedly connected to the wear-resistant layer 31. The reinforcing strip 311 extends from one end of the guide vane 3 to the other end. The reinforcing strip 311 is perpendicular to the airflow direction. Correspondingly, a diffuser groove 12 is also provided on the base plate 1. The diffuser groove 12 is located between two adjacent guide vanes 3. The diffuser groove 12 extends from the outer edge of the base plate 1 towards the center of the base plate 1. One side of the diffuser groove 12 is in contact with the windward side of the guide vane 3.

[0020] In practical applications, because the diameter of the circulating fan shaft is smaller than the diameter of the air inlet 21, the circulating fan shaft can extend into the rotor through the air inlet 21, thereby being fixedly connected to the assembly hole 11. When the shaft is assembled together with the assembly hole 11, the assembly hole 11 is in a sealed state.

[0021] Once assembled, this invention can rotate under the drive of the rotating shaft. Because the guide vanes 3 are in a continuous rotating state, a negative pressure is formed inside the rotor, causing flue gas to be continuously drawn into the rotor through the air inlet 21. Based on the combination of the guide slope 221 and the guide curved surface 222, the flow of flue gas into the air inlet 21 is smoother. Simultaneously, the reinforcing plate 223 effectively enhances the structural strength of the guide curved surface 222, preventing uncontrollable deformation of the air inlet 21 during use. Furthermore, a certain gap is maintained between the reinforcing plate 223 and the guide curved surface 222, which reduces the welding area during processing and lowers the welding workload. At the same time, the reinforcing plate 223 and the guide curved surface 222 together form an approximate triangle, thereby enhancing the supporting effect of the reinforcing plate 223 to a certain extent.

[0022] When the flue gas enters the rotor, it is guided by the continuously rotating guide vanes 3 and discharged from the rotor along the guide vanes 3. Due to the shape and arrangement of the guide vanes 3, the contact area between the flue gas and the guide vanes 3 is concentrated at the windward end and windward surface of the guide vanes 3. The contact area of ​​other areas of the guide vanes 3 is relatively small. Therefore, the wear at the windward end and windward surface is the most obvious. The windward end and windward surface are covered with a wear-resistant layer 31, which, to a certain extent, thickens the windward end and windward surface, thereby extending their service life. Preferably, the wear-resistant layer 31 is made of ceramic to further enhance its wear resistance. Finally, as the flue gas gradually flows, it leaves the rotor through the diffuser 12. Thus, the diffuser 12 allows the flue gas to separate from the wear-resistant layer 31 earlier, thereby reducing the wear of the wear-resistant layer 31 by the flue gas.

[0023] In summary, this invention can effectively extend the service life of the drainage blade 3, thereby effectively reducing the replacement frequency and maintenance costs for the user.

[0024] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A wear-resistant circulating fan rotor, characterized in that: include: Base plate (1), shell (2), drainage blades (3); An air inlet (21) is provided on the housing (2); The drainage blade (3) is fixedly connected to the base plate (1) and the housing (2); The guide vane (3) is arranged circumferentially along the air inlet (21); The drainage blades (3) are symmetrically arranged about the base plate (1); The guide vane (3) is also provided with a wear-resistant layer (31); The wear-resistant layer (31) covers the surface of the guide vane (3); The base plate (1) is provided with assembly holes (11); The axis of the assembly hole (11) coincides with the axis of the air inlet (21); The base plate (1) is also provided with an escaping groove (12); The venting groove (12) is located between two adjacent guide vanes (3).

2. The wear-resistant circulating fan rotor according to claim 1, characterized in that: The housing (2) includes a drainage surface (22); The drainage surface (22) is fixedly connected to the drainage blade (3); The drainage surface (22) is a closed ring to form the air inlet (21).

3. The wear-resistant circulating fan rotor according to claim 2, characterized in that: The drainage surface (22) includes a drainage inclined surface (221), a drainage curved surface (222), and a reinforcing plate (223); The drainage inclined surface (221) is fixedly connected to the drainage blade (3); The drainage inclined surface (221) is fixedly connected to the drainage curved surface (222); The drainage curved surface (222) is fixedly connected to the drainage blade (3); The drainage surface (222) is fixedly connected to the reinforcing plate (223); A gap is provided between the drainage surface (222) and the reinforcing plate (223).

4. The wear-resistant circulating fan rotor according to claim 1, characterized in that: An angle is provided between the guide vane (3) and the radial direction of the air inlet (21); The drainage blade (3) is curved in an arc shape; The bending direction of the guide vane (3) matches the airflow direction to form a windward end and a windward surface.

5. A wear-resistant circulating fan rotor according to claim 4, characterized in that: The wear-resistant layer (31) covers the windward end of the guide vane (3); The wear-resistant layer (31) covers the windward side of the guide vane (3).

6. A wear-resistant circulating fan rotor according to claim 5, characterized in that: The wear-resistant layer (31) is also provided with reinforcing edge strips (311); The reinforcing strip (311) is fixedly connected to the wear-resistant layer (31); The reinforcing strip (311) is arranged from one end of the drainage blade (3) to the other end; The reinforcing strip (311) is perpendicular to the flow direction of the airflow.

7. A wear-resistant circulating fan rotor according to claim 4, characterized in that: The venting groove (12) extends from the outer edge of the base plate (1) toward the center of the base plate (1); One side of the venting groove (12) is in contact with the windward side of the guide vane (3).

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