Riveting type centrifugal fan impeller

Abstract

The utility model relates to the technical field of centrifugal fans, and discloses a riveting type centrifugal fan impeller which comprises a rear disc, a front disc and a plurality of blades, the opposite faces of the rear disc and the front disc are rotationally connected with mounting plates, the two sides of each blade are fixedly connected with a plurality of connecting plates, the top of each mounting plate is provided with a connecting insertion opening matched with the corresponding blade and the corresponding connecting plate, and the connecting insertion openings are connected with the blades. The mounting plates and the blades are inserted into the connecting insertion openings, the connecting insertion openings are L-shaped, a fixing plate is arranged on the face, away from the front disc, of the rear disc, a plurality of transmission gears corresponding to the mounting plates are rotationally connected to the face, close to the rear disc, of the fixing plate, and a transmission gear ring meshed with the transmission gears is rotationally connected to one side of the fixing plate; the transmission gear ring drives all the transmission gears to conduct angle deviation synchronously, after the angle of the rotating blade is adjusted, the angles of the other blades are adjusted, a worker can adjust the angles of the blades conveniently, and meanwhile it is guaranteed that the angles of all the blades are the same.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to a riveted centrifugal fan impeller. Background Art

[0002] A centrifugal fan is a driven fluid machine that uses a high-speed rotating impeller to accelerate the gas, then slow it down and change the flow direction, converting kinetic energy into potential energy. Due to its high air volume and pressure, centrifugal fans are widely used in ventilation systems, industrial production, energy generation, mine and tunnel ventilation, cooling systems, food processing and manufacturing, hospitals and laboratories, agriculture and greenhouses, and other fields. Centrifugal fans are mainly composed of a casing, a main shaft, an impeller, a bearing transmission mechanism, and a motor. The impeller is a key component of the centrifugal fan, which converts gas or fluid into kinetic energy and pressure energy through high-speed rotation. The riveted impeller is a type of impeller, which is mainly assembled by riveting. The riveted impeller has many advantages such as simple process, strong fastening, avoidance of welding deformation and stress, and cost reduction.

[0003] For example, patent document CN216742160U discloses a quick-detachable centrifugal fan impeller, including a main side plate, one side of the main side plate is fixedly connected to the shaft sleeve, a slave side plate is set on the other side of the main side plate, a number of blades are set at equal angles between the slave side plate and the main side plate, two groups of placement racks are symmetrically set at both ends of the blades, a fixing mechanism with a detachable function is set on the main side plate, a gear is set on the shaft sleeve, and the screw rod is rotated. The rotation of the screw rod drives the screw sleeve to move, and the screw sleeve cooperates with the pull rod and the support to make the receiving plate move along the rectangular hole. At the same time, the receiving plate pushes the pressure plate to move. At this time, the receiving plate One end of the pressure rod slides along the inclined surface set on one side of the pressure plate. As it slides, the inclined surface pushes the pressure rod, and the pressure rod squeezes the blades through the clamping block, so that the blades are firmly fixed between the two sets of placement racks. The fixing mechanism has a simple structure and is easy to operate, which is convenient for the staff to quickly fix the blades; however, this existing technology still has many shortcomings. For example, when installing the blades, it is necessary to adjust the angle of each blade in turn, then punch holes, and then connect them through rivets, which is more inconvenient and easily causes the angles of each blade to deviate, affecting the quality of the centrifugal fan impeller. Utility Model Content

[0004] The purpose of the present utility model is to provide a riveted centrifugal fan impeller to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a riveted centrifugal fan impeller, comprising a rear disc, a front disc and a plurality of blades, the rear disc and the opposite side of the front disc are rotatably connected to a mounting plate, and both sides of the blades are fixedly connected to a plurality of connecting plates, the top of the mounting plate is provided with a connecting socket adapted to the blades and the connecting plate, the mounting plate and the blades are plugged into the connecting socket, and the connecting socket is L-shaped, a fixing plate is provided on the side of the rear disc away from the front disc, and a side of the fixing plate close to the rear disc is rotatably connected to a plurality of transmission gears corresponding to the mounting plate, and one side of the fixing plate is rotatably connected to a transmission gear ring meshing with the transmission gear, and the transmission gear is driven by the mounting plate.

[0006] As a further improvement to the above solution, a plurality of connection holes corresponding to the transmission gears are opened on one side of the rear disc, and a connecting shaft is fixedly connected to the middle of one side of the mounting plate located on the rear disc.

[0007] As a further improvement to the above solution, a connecting rod is fixedly connected to one side of the connecting shaft, and a mounting shaft is fixedly connected to one side of the transmission gear. A connecting slot that is compatible with the connecting rod is opened on one side of the mounting shaft, and the cross-sections of the connecting rod and the connecting slot are both cross-shaped.

[0008] As a further improvement to the above solution, an adsorption magnet is fixedly connected to an inner wall of one side of the connecting slot, and the connecting rod is made of magnetic material.

[0009] As a further improvement to the above solution, two first rivet holes are opened on one side of the mounting plate, two second rivet holes are opened on one side of the connecting plate, and multiple third rivet holes are opened on one side of the front plate and the rear plate, and the same rivet is inserted into the inner walls of the corresponding first rivet holes, the second rivet holes and the third rivet holes.

[0010] As a further improvement to the above solution, a shaft disc is provided on one side of the rear disc, and an impeller shaft is fixedly provided on the middle of a side of the rear disc away from the front disc.

[0011] As a further improvement to the above solution, a mounting hole is opened on one side of the fixing plate, and two handles are fixedly connected to one side of the fixing plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model rotates and connects a plurality of transmission gears corresponding to the mounting plates on a side of the fixing plate close to the rear disc, and rotates and connects a transmission gear ring that meshes with the transmission gear on one side of the fixing plate. The mounting plate is driven by the transmission gear. When installing the blades, the two connecting plates on the blades are first inserted into the two corresponding connecting sockets respectively, and then the blades are rotated. The two mounting plates are driven by the blades to rotate the angle, and the mounting plates drive the transmission gears to rotate. The transmission gear rings drive the various transmission gears to synchronously shift the angle. When the angle adjustment of the rotating blade is completed, the angles of the remaining blades are also adjusted, which is convenient for the staff to adjust the angle of the blades while ensuring that the angles of each blade are the same.

[0014] The utility model fixes the connecting rod on one side of the connecting shaft, fixes the connecting rod on one side of the transmission gear, and opens a connecting slot on one side of the installation shaft that is compatible with the connecting rod. When adjusting the angle, the installation plate drives the connecting shaft to rotate, and the connecting shaft drives the installation shaft to rotate through the connecting rod and the connecting slot, thereby driving the transmission gear to rotate. When the angle adjustment is completed, the fixing plate can be pulled by the handle. Since the connecting rod is plugged into the connecting slot and the connecting rod made of magnetic material is adsorbed by the adsorption magnet, the fixing plate can be easily taken out for reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a first viewing angle;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle;

[0018] Figure 3 This is a schematic diagram of the exploded three-dimensional structure of the connecting plate and the mounting plate in the present invention;

[0019] Figure 4 It is a three-dimensional structural diagram of the transmission gear ring and the transmission gear in the present utility model;

[0020] Figure 5 This is a schematic diagram of the exploded three-dimensional structure of the connecting shaft and the mounting shaft in the present invention;

[0021] Figure 6 It is a partial front cross-sectional view of the connecting rod and the connecting slot in the present invention.

[0022] In the figure: 1. Rear disc; 2. Front disc; 3. Shaft disc; 4. Blades; 5. Impeller shaft; 6. Fixing plate; 7. Handle; 8. Mounting plate; 9. Connecting socket; 10. Connecting plate; 11. Rivet; 12. First rivet hole; 13. Transmission gear ring; 14. Transmission gear; 15. Connecting shaft; 16. Connecting rod; 17. Adsorption magnet; 18. Connecting slot; 19. Mounting shaft; 20. Second rivet hole; 21. Third rivet hole; 22. Connecting hole; 23. Mounting hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0024] A riveted centrifugal fan impeller, such as Figure 1 、 Figure 2 and Figure 4 As shown, it includes a rear disc 1, a front disc 2 and a plurality of blades 4. The opposite sides of the rear disc 1 and the front disc 2 are rotatably connected to a mounting plate 8, and both sides of the blade 4 are fixedly connected to a plurality of connecting plates 10. The top of the mounting plate 8 is provided with a connecting socket 9 adapted to the blade 4 and the connecting plate 10. The mounting plate 8 and the blade 4 are plugged into the connecting socket 9, and the connecting socket 9 is L-shaped. A fixing plate 6 is provided on the side of the rear disc 1 away from the front disc 2. The side of the fixing plate 6 close to the rear disc 1 is rotatably connected to a plurality of transmission gears 14 corresponding to the mounting plate 8. One side of the fixing plate 6 is rotatably connected to a transmission gear ring 13 meshing with the transmission gear 14, and the transmission gear 14 is driven by the mounting plate 8.

[0025] like Figure 3 and Figure 4 As shown, two first rivet holes 12 are opened on one side of the mounting plate 8, two second rivet holes 20 are opened on one side of the connecting plate 10, and multiple third rivet holes 21 are opened on one side of the front disc 2 and the rear disc 1. The inner walls of the corresponding first rivet holes 12, second rivet holes 20 and third rivet holes 21 are plugged with the same rivet 11. Through the first rivet holes 12, second rivet holes 20 and third rivet holes 21, the front disc 2, rear disc 1 and blade 4 can be installed by rivets 11, which has many advantages such as simple process, strong fastening, avoidance of welding deformation and stress, and cost reduction.

[0026] like Figure 1 and Figure 2As shown, a shaft disk 3 is provided on one side of the rear disc 1, and an impeller shaft 5 is fixedly provided on the middle part of the side of the rear disc 1 away from the front disc 2, and is fixed to the motor of the fan through the impeller shaft 5; a mounting hole 23 is opened on one side of the fixing plate 6, and two handles 7 are fixedly connected to one side of the fixing plate 6. The handles 7 make it easy to pull the fixing plate 6 to separate it from the rear disc 1.

[0027] In Example 1, when installing the blade 4, first insert the two connecting plates 10 on the blade 4 into the two corresponding connecting sockets 9 respectively, and then rotate the blade 4, and drive the two mounting plates 8 to rotate the angle through the blade 4, and the mounting plate 8 drives the transmission gear 14 to rotate, and drives each transmission gear 14 to synchronously shift the angle through the transmission gear ring 13. When the angle adjustment of the rotating blade 4 is completed, the angles of the remaining blades 4 are also adjusted, which is convenient for the staff to adjust the angle of the blade 4, while ensuring that the angles of each blade 4 are the same. After the angle adjustment is completed, use tools to punch holes in the mounting plate 8, the connecting plate 10, the front disk 2 and the rear disk 1, and then install the rivets 11 in the corresponding first rivet holes 12, the second rivet holes 20 and the third rivet holes 21. Example 2

[0028] Example 2 is based on Example 1, as Figure 5 and Figure 6 As shown, a plurality of connecting holes 22 corresponding to the transmission gear 14 are opened on one side of the rear disc 1, and a connecting shaft 15 is fixedly connected to the middle part of one side of the mounting plate 8 on the rear disc 1; a connecting rod 16 is fixedly connected to one side of the connecting shaft 15, and a mounting shaft 19 is fixedly connected to one side of the transmission gear 14, and a connecting slot 18 is opened on one side of the mounting shaft 19 to match the connecting rod 16. The cross-sections of the connecting rod 16 and the connecting slot 18 are both cross-shaped. The cross-shaped design facilitates the connecting rod 16 to drive the mounting shaft 19 to rotate through the connecting slot 18; an adsorption magnet 17 is fixedly connected to the inner wall of one side of the connecting slot 18, and the connecting rod 16 is made of magnetic material. By means of the adsorption magnet 17 and the connecting rod 16 made of magnetic material, the mounting shaft 19 can be quickly separated from the connecting shaft 15.

[0029] In Example 2, when adjusting the angle, the mounting plate 8 drives the connecting shaft 15 to rotate, and the connecting shaft 15 drives the mounting shaft 19 to rotate through the connecting rod 16 and the connecting slot 18, thereby driving the transmission gear 14 to rotate. When the angle adjustment is completed, the fixing plate 6 can be pulled by the handle 7. Since the connecting rod 16 is plugged into the connecting slot 18 and the connecting rod 16 made of magnetic material is adsorbed by the adsorption magnet 17, the fixing plate 6 can be easily taken out for reuse.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A riveted centrifugal fan impeller, comprising a rear disc (1), a front disc (2) and a plurality of blades (4), characterized in that: The rear disc (1) and the front disc (2) are both rotatably connected to a mounting plate (8) on opposite sides thereof, and a plurality of connecting plates (10) are fixedly connected to both sides of the blade (4). A connecting socket (9) adapted to the blade (4) and the connecting plate (10) is provided on the top of the mounting plate (8), and the mounting plate (8) and the blade (4) are plugged into the connecting socket (9). The connecting socket (9) is L-shaped. A fixing plate (6) is provided on the side of the rear disc (1) away from the front disc (2), and a plurality of transmission gears (14) corresponding to the mounting plate (8) are rotatably connected to the side of the fixing plate (6) close to the rear disc (1). A transmission gear ring (13) meshing with the transmission gear (14) is rotatably connected to one side of the fixing plate (6), and the transmission gear (14) is driven by the mounting plate (8).

2. The riveted centrifugal fan impeller according to claim 1, characterized in that: A plurality of connection holes (22) corresponding to the transmission gears (14) are formed on one side of the rear disc (1), and a connection shaft (15) is fixedly connected to the middle portion of one side of the mounting plate (8) located on the rear disc (1).

3. The riveted centrifugal fan impeller according to claim 2, characterized in that: One side of the connecting shaft (15) is fixedly connected to a connecting rod (16), and one side of the transmission gear (14) is fixedly connected to a mounting shaft (19). One side of the mounting shaft (19) is provided with a connecting slot (18) adapted to the connecting rod (16). The cross-sections of the connecting rod (16) and the connecting slot (18) are both cross-shaped.

4. The riveted centrifugal fan impeller according to claim 3, characterized in that: An adsorption magnet (17) is fixedly connected to an inner wall of one side of the connection slot (18), and the connection rod (16) is made of a magnetic material.

5. The riveted centrifugal fan impeller according to claim 1, characterized in that: Two first rivet holes (12) are formed on one side of the mounting plate (8), two second rivet holes (20) are formed on one side of the connecting plate (10), and a plurality of third rivet holes (21) are formed on one side of each of the front plate (2) and the rear plate (1), wherein the inner walls of the corresponding first rivet holes (12), second rivet holes (20) and third rivet holes (21) are connected with the same rivet (11).

6. The riveted centrifugal fan impeller according to claim 1, characterized in that: A shaft disc (3) is provided on one side of the rear disc (1), and an impeller shaft (5) is fixedly provided on the middle portion of a side of the rear disc (1) away from the front disc (2).

7. The riveted centrifugal fan impeller according to claim 1, characterized in that: A mounting hole (23) is provided on one side of the fixing plate (6), and two handles (7) are fixedly connected to one side of the fixing plate (6).

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