Centrifugal wind wheel with reinforcing structure

Abstract

The utility model relates to the technical field of centrifugal wind wheels, and discloses a centrifugal wind wheel with a reinforcing structure, which comprises a base plate, a mounting sleeve is mounted at the axis position of the top of the base plate, and a positioning groove is formed in the mounting sleeve. A reinforcing foot stand used for reinforcing the connecting strength is fixedly welded to the outer side of the connecting position of the installation sleeve and the base disc, and an inner spiral blade used for improving the air draft effect of the axis position is fixedly installed on the outer wall of the installation sleeve. According to the centrifugal wind wheel with the reinforcing structure, the inner spiral blades are driven to rotate through the mounting sleeve, so that air draft is conducted towards the inner side from the position close to the axis, the auxiliary negative pressure function can be achieved at the position close to the axis, the air inlet amount of air entering the position close to the surface of the base disc is increased, and the air draft effect is improved; and meanwhile, by improving the supporting effect on the centrifugal blades, the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal fan wheel technical field, concretely is a centrifugal fan wheel with reinforced structure. BACKGROUND

[0002] The centrifugal fan wheel is generally composed of blades, a wheel disc, a wheel cover, a shaft disc and the like, rotates at high speed and generates centrifugal force. The positions of the centrifugal fan wheel prone to cracking during operation are usually closely related to stress concentration, material fatigue, manufacturing defects or operation environment. The fixing strength of the general centrifugal fan wheel blade is low, and the blade itself is prone to cracks during high-speed rotation due to uneven stress. The position where the blade contacts the base disc is also prone to cracks due to different stress directions, resulting in cracks at the welding position. In addition, the centrifugal blowing effect near the base disc position of the general centrifugal fan is poor during use, affecting the air output. SUMMARY

[0003] (I) Technical problems solved

[0004] In view of the deficiencies in the prior art, the utility model provides a centrifugal fan wheel with reinforced structure, which solves the problems of cracks in the centrifugal fan blade itself and the welding position of the blade and the base disc and poor air output.

[0005] (II) Technical solutions

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a centrifugal fan wheel with reinforced structure, comprising a base disc, an installation sleeve is installed at the shaft center position of the top of the base disc, a positioning groove is formed in the inside of the installation sleeve, a reinforcing foot stand for reinforcing the connection strength is fixedly welded on the outside of the connection position of the installation sleeve and the base disc, inner spiral blades for improving the air extraction effect of the shaft center position are fixedly installed on the outer wall of the installation sleeve, an outer ring frame for improving the strength of the outer edge of the centrifugal blade is fixedly installed on the top of the centrifugal blade, and an anti-deformation device for improving the strength of the inner side is installed on the inner side of the centrifugal blade.

[0007] Preferably, the anti-deformation device comprises inner support frames, an inner support ring seat, an upper support slot, a middle support slot, a lower support slot and a lower support slot, the upper support slot is opened at the top position of the inner side wall of the centrifugal blade, the middle support slot is opened at the middle position of the inner side wall of the centrifugal blade, the inner support slot is opened at the bottom position of the inner side wall of the centrifugal blade, and the lower support slot is opened at the inner side wall of the centrifugal blade and is located at the upper side of the inner support slot; each centrifugal blade is welded and fixed with different positions of the three inner support frames, the top end of the uppermost inner support frame is welded and fixed in the inner side of the upper support slot, the inner support frame at the middle position is welded and fixed with the inner part of the middle support slot, and the bottom end of the lowermost inner support frame is welded and fixed in the inner part of the lower support slot; the inner support ring seat is welded and fixed in the inner part of the inner support slot, and the bottom end of the inner support frame is welded and fixed with the top of the inner support ring seat.

[0008] Preferably, the top outer side position of the centrifugal blade is provided with an outer slot, and the bottom of the outer ring frame is welded and fixed in the inner side of the outer slot.

[0009] Preferably, the inner support frame is spiral, and the spiral direction of the inner support frame is the same as the spiral direction of the inner spiral blade.

[0010] Preferably, the upper end of the inner spiral blade is fixedly installed with a reinforcing rod for improving the strength of the inner spiral blade, and the inner end of the reinforcing rod is fixedly welded with the surface of the mounting sleeve.

[0011] Preferably, the width of the bottom of the inner spiral blade is smaller than the width of the top.

[0012] Compared with the prior art, the centrifugal fan with the reinforcing structure has the following beneficial effects:

[0013] 1. The centrifugal fan with the reinforcing structure drives the inner spiral blade to rotate through the mounting sleeve, so that the air is drawn inward from the position close to the shaft center, the function of auxiliary negative pressure is realized at the position close to the shaft center, the air inlet amount into the position close to the surface of the base disc is improved, and the air drawing effect is improved.

[0014] 2. The centrifugal fan with the reinforcing structure supports the outer side of the centrifugal blade through the outer ring frame, supports the inner side of the centrifugal blade through the cooperation of the inner support frame and the inner support ring seat, improves the effect of supporting and preventing deformation of the centrifugal blade through the multi-point supporting mode, and in the process of rotating the inner support frame, the gas below the inner support frame is also extruded downward, so that the airflow flows downward, the relative airflow at the upper side position can diffuse to the bottom position area, the function of balancing the air pressure at the top and the bottom is realized, and the centrifugal blade is more uniform in stress during centrifugal blowing. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structural schematic view of the utility model;

[0016] Figure 2 It is the structural schematic view of the utility model Figure 1 It is the structural schematic view of the utility model

[0017] Figure 3 It is the structural schematic view of the utility model inner support frame and inner support ring seat installation structure;

[0018] Figure 4 It is the structural schematic view of the utility model centrifugal blade.

[0019] 1, base disc, 2, installation sleeve, 21, positioning groove, 3, inner spiral blade, 4, reinforcing rod, 5, reinforcing foot, 6, centrifugal blade, 7, outer ring frame, 8, inner support frame, 9, inner support ring seat, 10, outer clamping groove, 11, upper support clamping groove, 12, middle support clamping groove, 13, lower support clamping groove, 14, inner support groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figures 1-4 The utility model provides a centrifugal wind wheel with reinforcing structure, including base disc 1, the axle position of base disc 1 top is installed with installation sleeve 2, the inside of installation sleeve 2 is set up with positioning groove 21, the outside of installation sleeve 2 and base disc 1 connection position is fixedly welded with the reinforcing foot 5 for reinforcing the connecting strength, the outer wall of installation sleeve 2 is fixedly installed with the inner spiral blade 3 for improving the effect of centrifugal fan of axle position, the top of centrifugal blade 6 is fixedly installed with the outer ring frame 7 for improving the strength of centrifugal blade 6 along the outside, the inside of centrifugal blade 6 is installed with the anti-deformation device for improving the inside strength.

[0022] Further, the anti-deformation device comprises inner support frames 8, inner support ring seats 9, upper support clamping grooves 11, middle support clamping grooves 12, lower support clamping grooves 13, and lower support clamping grooves 13. The upper support clamping grooves 11 are arranged at the top of the inner side wall of the centrifugal blades 6. The middle support clamping grooves 12 are arranged at the middle of the inner side wall of the centrifugal blades 6. The inner support grooves 14 are arranged at the bottom of the inner side wall of the centrifugal blades 6. The lower support clamping grooves 13 are arranged at the inner side wall of the centrifugal blades 6 and above the inner support grooves 14. Each centrifugal blade 6 is welded and fixed at different positions of the three inner support frames 8. The top end of the uppermost inner support frame 8 is welded and fixed inside the upper support clamping groove 11. The middle inner support frame 8 is welded and fixed inside the middle support clamping groove 12. The bottom end of the lowermost inner support frame 8 is welded and fixed inside the lower support clamping groove 13. The inner support ring seat 9 is welded and fixed inside the inner support groove 14. The bottom end of the inner support frame 8 is welded and fixed at the top of the inner support ring seat 9. The inner support frame 8 is supported by the outer side and the inner side of the centrifugal blade 6, respectively, to improve the strength of the centrifugal blade 6, thereby preventing deformation and cracks of the centrifugal blade 6 due to uneven stress.

[0023] Further, the top of the centrifugal blade 6 is provided with an outer clamping groove 10. The bottom of the outer ring frame 7 is welded and fixed inside the outer clamping groove 10. The outer clamping groove 10 and the centrifugal blade 6 are clamped together, and then connected by welding, thereby improving the strength of the welded connection.

[0024] Further, the inner support frame 8 is spiral-shaped, and the spiral direction of the inner support frame 8 is the same as that of the inner spiral blade 3. The air flow at the suction side is pressed downward by the cooperation of the inner spiral blade 3 and the inner support ring seat 9, so that the air flow flows inward to the position close to the base disc 1, thereby improving the suction effect, and improving the air flow amount at the position of the centrifugal blade 6 close to the base disc 1 when the centrifugal blade 6 rotates outward, compared with the way of suction and exhaust only by the rotation of the centrifugal blade 6.

[0025] Further, the inner spiral blade 3 is provided with a reinforcing rod 4 at the upper end for improving the strength of the inner spiral blade 3. The inner end of the reinforcing rod 4 is fixedly welded to the surface of the mounting sleeve 2. The reinforcing rod 4 prevents deformation of the upper end of the inner spiral blade 3 and prevents cracks at the connection position of the inner spiral blade 3 and the mounting sleeve 2.

[0026] Further, the width of the bottom of the inner spiral blade 3 is smaller than that of the top. The inner spiral blade 3 only needs to suck air downward. When the air flow reaches the position close to the base disc 1, it needs to flow outward without blowing to the base disc 1. After the air at the top of the inner spiral blade 3 is sucked downward, the air flow spreads outward under the blockage of the base disc 1.

[0027] In use, the centrifugal fan is connected with the driving device through the installation sleeve 2, and then the installation sleeve 2 is driven to rotate by the driving device, the base disc 1 is driven to rotate by the installation sleeve 2, the centrifugal blade 6 is driven to rotate by the base disc 1, the air inside the centrifugal blade 6 is driven to rotate by the centrifugal blade 6, the air is discharged to the outside in the rotating process through the cooperation of the inclination extrusion and centrifugal force of the centrifugal blade 6, the top of the centrifugal blade 6 is supported by the outer ring frame 7 to prevent deformation in the rotating process, and the inside end of the centrifugal blade 6 is supported by the cooperation of the inner support frame 8 and the inner support ring seat 9, so that the strength of the centrifugal blade 6 is improved, and the air flow near the top of the centrifugal blade 6 is pushed to flow downward to assist the air flow inside the centrifugal blade 6 to blow downward in the rotating process of the centrifugal blade 6, the air flow near the shaft center position is blown downward by the inner spiral blade 3 driven by the installation sleeve 2, so that sufficient air can be supplemented near the surface of the base disc 1, and the position near the surface of the base disc 1 of the centrifugal blade 6 can also suck sufficient air and blow outward in the rotating and blowing outward process of the centrifugal blade 6, so that the blowing effect of the centrifugal fan is improved.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A centrifugal fan wheel with a reinforced structure, comprising a base disk (1), characterized in that: The shaft center position of the top of the base disc (1) is provided with a mounting sleeve (2), the inside of the mounting sleeve (2) is provided with a positioning groove (21), the outside of the connecting position of the mounting sleeve (2) and the base disc (1) is fixedly welded with a reinforcing foot (5) for strengthening the connecting strength, the outer wall of the mounting sleeve (2) is fixedly provided with an inner spiral blade (3) for improving the air extraction effect of the shaft center position, the top of the centrifugal blade (6) is fixedly provided with an outer ring frame (7) for improving the outward strength of the centrifugal blade (6), and the inner side of the centrifugal blade (6) is provided with a deformation prevention device for improving the inward strength.

2. A centrifugal fan wheel with a reinforced structure according to claim 1, characterized in that: The deformation prevention device comprises inner support frames (8), an inner support ring seat (9), upper support clamping grooves (11), middle support clamping grooves (12), lower support clamping grooves (13) and lower support clamping grooves (13), the upper support clamping grooves (11) are arranged at the top position of the inner side wall of the centrifugal blade (6), the middle support clamping grooves (12) are arranged at the middle position of the inner side wall of the centrifugal blade (6), the inner support grooves (14) are arranged at the bottom position of the inner side wall of the centrifugal blade (6), and the lower support clamping grooves (13) are arranged at the position of the inner side wall of the centrifugal blade (6) and located on the upper side of the inner support grooves (14), each centrifugal blade (6) is welded and fixed with different positions of the three inner support frames (8), the top end of the topmost inner support frame (8) is welded and fixed in the inner side of the upper support clamping groove (11), the inner support frame (8) at the middle position is welded and fixed with the inner side of the middle support clamping groove (12), and the bottom end of the lowermost inner support frame (8) is welded and fixed in the inner side of the lower support clamping groove (13), the inner support ring seat (9) is welded and fixed in the inner side of the inner support groove (14), and the bottom end of the inner support frame (8) is welded and fixed with the top of the inner support ring seat (9).

3. The centrifugal fan wheel with reinforced structure according to claim 1, characterized in that: The top of the centrifugal blade (6) is provided with an outer clamping groove (10) at the outer side position, and the bottom of the outer ring frame (7) is welded and fixed in the inner side of the outer clamping groove (10).

4. The centrifugal fan wheel with reinforced structure according to claim 2, characterized in that: The inner support frame (8) is spiral-shaped, and the spiral direction of the inner support frame (8) is the same as that of the inner spiral blade (3).

5. The centrifugal fan wheel with a reinforced structure according to claim 1, characterized in that: The inner spiral blade (3) is fixedly provided with a reinforcing rod (4) at the upper end for improving the strength of the inner spiral blade (3), and the inner end of the reinforcing rod (4) is fixedly welded with the surface of the mounting sleeve (2).

6. A centrifugal fan wheel with a reinforcing structure according to claim 2, characterized in that: The width of the inner spiral blade (3) at the bottom is smaller than that at the top.

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