Blade-adjustable impeller in dust removal fan

Abstract

The utility model relates to the field of blade-adjustable impellers in dust removal fans, in particular to a blade-adjustable impeller in a dust removal fan, which comprises a driving wheel and a first fixing cover, the outer surface of the driving wheel is meshed with a driven wheel, the outer surface of the driven wheel is meshed with a gear ring, the outer surface of the gear ring is provided with a tooth groove, and the first fixing cover is arranged in the tooth groove. A plurality of gears are meshed with the inner wall of the tooth groove, a connecting rod is fixedly connected to the side, away from the driving wheel, of each gear, fan blades are fixedly connected to the inner wall of each connecting rod, and the driving wheel is rotated so that the driving wheel can drive a driven wheel meshed with the driving wheel to rotate; and then through mutual meshing between a driven wheel and a gear ring, the gear ring starts to rotate around the central axis of the driving wheel under driving of the driven wheel, at the moment, through meshing between a gear and a tooth groove, the gear ring drives the gear to rotate, and then the effect that the device can adjust the angle of the fan blades by rotating the driving wheel is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of blade-adjustable impellers in dust removal fans, in particular to a blade-adjustable impeller in a dust removal fan. Background Art

[0002] The dust removal fan is a type of centrifugal fan, which is mainly composed of an impeller, a casing, an air inlet and other parts equipped with a direct-connected motor.

[0003] The existing dust removal fan cannot adjust the angle of the blades in the fan according to different working conditions during use, and cannot maximize the dust removal efficiency. In addition, dust easily sticks to the fan blades and is difficult to clean. During the cleaning process, the impeller needs to be disassembled. Repeated disassembly and assembly can easily damage the bolts and affect the service life.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] In view of the above background technology, the prior art has the problem that the angle of the blades in the fan cannot be adjusted.

[0006] The utility model discloses an impeller with adjustable blades in a dust removal fan, comprising a driving wheel and a first fixed cover, the outer surface of the driving wheel is meshed with a driven wheel, the outer surface of the driven wheel is meshed with a gear ring, the outer surface of the gear ring is provided with a tooth groove, the inner wall of the tooth groove is meshed with a plurality of gears, each of the gears is fixedly connected to a connecting rod on the side away from the driving wheel, and the inner wall of each connecting rod is fixedly connected to a fan blade.

[0007] Furthermore, a connecting column is fixedly connected to one side of the driving wheel close to the first fixing cover, and an outer surface of the connecting column is rotatably connected to the first fixing cover.

[0008] Furthermore, a side of the driven wheel close to the first fixed cover is rotatably connected to the first fixed cover, and an outer surface of the gear ring is rotatably connected to the first fixed cover.

[0009] Furthermore, the first fixed cover is rotatably connected to one side away from the driving wheel with four hook plates, the outer surface of the connecting column is slidably connected to the cover plate, and the outer surface of each hook plate is clamped with the cover plate.

[0010] Furthermore, a second fixing cover is provided on the side of the first fixing cover away from the cover plate, and a plurality of step grooves are provided inside the second fixing cover and the first fixing cover, and the inner wall of each step groove is rotatably connected to a corresponding gear and a connecting rod.

[0011] Furthermore, a plurality of elastic plates are fixedly connected to one side of the first fixing cover close to the second fixing cover, a plurality of slide grooves are provided inside the second fixing cover, and an outer surface of each of the elastic plates is plugged into a corresponding slide groove.

[0012] Furthermore, a fixing rod is fixedly connected to a side of the second fixing cover away from the first fixing cover, and a central axis of the fixing rod is in the same straight line as a central axis of the second fixing cover.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model is provided with a driving wheel, a driven wheel, a gear ring, a tooth groove, a connecting rod, a fan blade and other components. By rotating the driving wheel, the driving wheel drives the driven wheel meshing with it to rotate. Then, through the mutual meshing between the driven wheel and the gear ring, the gear ring starts to rotate around the central axis of the driving wheel driven by the driven wheel. At this time, through the meshing between the gear and the tooth groove, the gear ring drives the gear to rotate, thereby achieving the effect that the device can adjust the angle of the fan blade by rotating the driving wheel.

[0015] 2. The utility model sets an elastic plate, a first fixed cover, a second fixed cover, a slide groove and other components, and inserts the elastic plate on the first fixed cover along the corresponding slide groove on the second fixed cover. During this process, the elastic plate will be squeezed and opened, and slide along the corresponding slide groove until the elastic plate passes through the corresponding slide groove. At this time, the elastic plate is reset under the action of its rebound force and the second fixed cover is clamped, thereby achieving the effect that the device can quickly install the first fixed cover and the second fixed cover by fixing them with the elastic plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the driven wheel of the utility model;

[0019] Figure 3 This is a schematic diagram of the fan blade structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the stepped trough structure of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the second fixed cover of the utility model.

[0022] In the figure: 1. driving wheel; 2. connecting column; 3. driven wheel; 4. gear ring; 5. tooth groove; 6. gear; 7. connecting rod; 8. fan blade; 9. first fixed cover; 10. hook plate; 11. cover plate; 12. elastic plate; 13. second fixed cover; 14. fixing rod; 15. slide groove; 16. step groove. DETAILED DESCRIPTION

[0023] The following will disclose multiple embodiments of the utility model with diagrams. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the utility model. In other words, in some embodiments of the utility model, these physical details are not necessary. In addition, for the purpose of simplifying the diagram, some conventional structures and components will be depicted in a simple schematic manner in the diagram.

[0024] See also Figure 2 , Figure 3 , Figure 4 The utility model discloses an adjustable blade impeller in a dust removal fan, comprising a driving wheel 1 and a first fixed cover 9, wherein the outer surface of the driving wheel 1 is meshed with a driven wheel 3, the driving wheel 1 and the driven wheel 3 are located inside the first fixed cover 9, and the central axis of the driving wheel 1 is in the same straight line with the central axis of the first fixed cover 9, the outer surface of the driven wheel 3 is meshed with a toothed ring 4, the central axis of the toothed ring 4 is also in the same straight line with the central axis of the first fixed cover 9, the outer surface of the toothed ring 4 is provided with tooth grooves 5, the tooth grooves 5 are evenly distributed on the side of the toothed ring 4, and the inner wall of the toothed grooves 5 is meshed with the toothed ring 4. There are several gears 6, and each gear 6 is fixedly connected to a connecting rod 7 on the side away from the driving wheel 1. The inner wall of each connecting rod 7 is fixedly connected to a fan blade 8. Specifically, when the driving wheel 1 is rotated, the driving wheel 1 will engage with the driven wheel 3 and the driven wheel 3 and the gear ring 4, so that the rotation of the driving wheel 1 will drive the gear ring 4 to rotate around the central axis of the driving wheel 1. At this time, the gear ring 4 will drive the gear 6 to rotate through the mutual engagement between the tooth groove 5 on the gear ring 4 and the gear 6, and thereby adjust the angle of the fan blade 8 through the connecting rod 7.

[0025] In this embodiment, a connecting column 2 is fixedly connected to a side of the driving wheel 1 close to the first fixed cover 9, and an outer surface of the connecting column 2 is rotatably connected to the first fixed cover 9. Specifically, the driving wheel 1 is fixed to the first fixed cover 9 through the connecting column 2. At this time, the connecting column 2 can rotate around the central axis of the first fixed cover 9. A hexagonal groove is provided on a side of the connecting column 2 away from the driving wheel 1, so that the driving wheel 1 can be rotated through the connecting column 2.

[0026] like Figure 2 , Figure 3 , Figure 4As shown, the side of the driven wheel 3 close to the first fixed cover 9 is rotatably connected to the first fixed cover 9, the outer surface of the gear ring 4 is rotatably connected to the first fixed cover 9, the driven wheel 3 is located between the driving wheel 1 and the gear ring 4, and the driven wheel 3 serves as a connecting piece between the driving wheel 1 and the gear ring 4. The rotation of the driving wheel 1 will drive the gear ring 4 to rotate through the mutual engagement between the driven wheel 3, the driving wheel 1 and the gear ring 4.

[0027] In order to fix the cover plate 11 and the connecting column 2 to prevent the driving wheel 1 from rotating under the action of inertia, four hook plates 10 are rotatably connected to the side of the first fixed cover 9 away from the driving wheel 1, and the outer surface of the connecting column 2 is slidably connected to the cover plate 11. The outer surface of the connecting column 2 outside the first fixed cover 9 is fixedly connected to a limiting strip, and a limiting groove is provided inside the cover plate 11. The outer surface of each hook plate 10 is clamped with the cover plate 11. Specifically, by inserting the cover plate 11 along the connecting column 2, the hook plate 10 is rotated so that the hook plate 10 can fix the cover plate 11, and the driving wheel 1 can be prevented from rotating due to inertia.

[0028] like Figure 4 , Figure 5 As shown, a second fixing cover 13 is provided on the side of the first fixing cover 9 away from the cover plate 11. The second fixing cover 13 has the same size as the first fixing cover 9, and a plurality of step grooves 16 are provided inside the second fixing cover 13 and the first fixing cover 9. The number and size of the step grooves 16 on the first fixing cover 9 and the second fixing cover 13 are the same, and a full circle is formed when the corresponding two step grooves 16 overlap. The inner wall of each step groove 16 is rotatably connected to the corresponding gear 6 and the connecting rod 7. Specifically, a gear 6, the connecting rod 7 and the fan blade 8 form an integral blade. First, the integral blade is placed in the step groove 16 on the first fixing cover 9, and then the second fixing cover 13 is covered on the first fixing cover 9, so that the corresponding two step grooves 16 overlap to clamp the integral blade.

[0029] Replay Figure 3 , Figure 5 A plurality of elastic plates 12 are fixedly connected to one side of the first fixed cover 9 close to the second fixed cover 13, and a card block is arranged at one end of the elastic plate 12 away from the first fixed cover 9. A plurality of slide grooves 15 are provided inside the second fixed cover 13, and the slide grooves 15 are inclined surfaces. The outer surface of each elastic plate 12 is plugged into the corresponding slide groove 15. Specifically, when the second fixed cover 13 and the first fixed cover 9 overlap, the elastic plate 12 will slide along the corresponding slide groove 15. Due to the relationship between the inclined surfaces of the slide grooves 15, the elastic plate 12 will begin to be squeezed and opened during this process, and when the two overlap, the elastic plate 12 will be reset under the action of its rebound force, so that the card block is carded with the second fixed cover 13. At this time, the first fixed cover 9 and the second fixed cover 13 are quickly fixed.

[0030] See also Figure 1 , Figure 4 , Figure 5 A fixing rod 14 is fixedly connected to the side of the second fixing cover 13 away from the first fixing cover 9, and the central axis of the fixing rod 14 is in the same straight line as the central axis of the second fixing cover 13. Specifically, the fixing rod 14 serves as a transmission shaft, which can be connected to a motor, and the motor drives the fixing rod 14 to rotate the impeller.

[0031] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An adjustable blade impeller in a dust removal fan, comprising a driving wheel (1) and a first fixed cover (9), characterized in that: The outer surface of the driving wheel (1) is meshed with a driven wheel (3), the outer surface of the driven wheel (3) is meshed with a toothed ring (4), the outer surface of the toothed ring (4) is provided with a toothed groove (5), the inner wall of the toothed groove (5) is meshed with a plurality of gears (6), each of the gears (6) is fixedly connected to a connecting rod (7) on a side away from the driving wheel (1), and each of the connecting rods (7) is fixedly connected to a fan blade (8) on its inner wall.

2. The blade-adjustable impeller in a dust removal fan according to claim 1, characterized in that: A connecting column (2) is fixedly connected to one side of the driving wheel (1) close to the first fixing cover (9), and the outer surface of the connecting column (2) is rotatably connected to the first fixing cover (9).

3. The blade-adjustable impeller in the dust removal fan according to claim 2, characterized in that: The side of the driven wheel (3) close to the first fixed cover (9) is rotatably connected to the first fixed cover (9), and the outer surface of the gear ring (4) is rotatably connected to the first fixed cover (9).

4. The blade-adjustable impeller in a dust removal fan according to claim 3, characterized in that: The first fixed cover (9) is rotatably connected to one side away from the driving wheel (1) with four hook plates (10); the outer surface of the connecting column (2) is slidably connected to a cover plate (11); and the outer surface of each hook plate (10) is snap-fitted to the cover plate (11).

5. The blade-adjustable impeller in a dust removal fan according to claim 4, characterized in that: A second fixing cover (13) is provided on a side of the first fixing cover (9) away from the cover plate (11); a plurality of stepped grooves (16) are provided inside the second fixing cover (13) and the first fixing cover (9); and the inner wall of each stepped groove (16) is rotatably connected to a corresponding gear (6) and a connecting rod (7).

6. The blade-adjustable impeller in a dust removal fan according to claim 5, characterized in that: A plurality of elastic plates (12) are fixedly connected to one side of the first fixed cover (9) close to the second fixed cover (13); a plurality of slide grooves (15) are provided inside the second fixed cover (13); and the outer surface of each elastic plate (12) is plugged into a corresponding slide groove (15).

7. The blade-adjustable impeller in a dust removal fan according to claim 6, characterized in that: A fixing rod (14) is fixedly connected to a side of the second fixing cover (13) away from the first fixing cover (9), and a central axis of the fixing rod (14) is in the same straight line as a central axis of the second fixing cover (13).

Images