Energy-saving wing type retroverted impeller

Abstract

The utility model belongs to the technical field of impellers, and particularly relates to an energy-saving wing type retroverted impeller which comprises a middle fixing disc, a first end fixing disc and a second end fixing disc, the first end fixing disc is arranged on one side of the middle fixing disc, and the second end fixing disc is arranged on the other side of the middle fixing disc. A first wing-shaped blade is rotationally arranged between the middle fixing disc and the first end fixing disc, and a second wing-shaped blade is rotationally arranged between the middle fixing disc and the second end fixing disc. The blades are all wing-shaped blades, the impeller is low in energy consumption and high in efficiency, the aluminum alloy wing-shaped impeller is made of alloy materials with high strength proportion, the purposes of reducing the overall weight of the impeller, reducing rotational inertia and reducing energy consumption are achieved, meanwhile, the blades are welded to be of an integrated structure, and the overall structure is compact. Due to the physical property of aluminum, the impeller not only has good corrosion resistance and long service life, but also has the spark-proof (explosion-proof) characteristic.

Description

Technical Field

[0001] The utility model relates to the technical field of impellers, in particular to an energy-saving airfoil-shaped backward-inclined impeller. Background Art

[0002] The impeller is a key component of a centrifugal fan. In terms of improving the efficiency of the fan, the focus of optimized design is the impeller, among which the blades are particularly critical. In various aspects of the blade shape, predecessors have conducted long-term exploration and achieved many fruitful results.

[0003] The invention patent, currently published with the publication number CN204371770U, discloses a centrifugal impeller. The impeller comprises a disc, multiple blades, a shroud, and a hub. The diameters of the disc and shroud are both smaller than the outer diameters of the blades, meaning the outer ends of the blades extend beyond the disc and shroud by 0.6% to 1.5% of the disc diameter. The blade outlet ends between the disc and shroud are contoured to a single straight line. By rationally altering the position and shape of the blade outlet edges, this centrifugal impeller can reduce airflow losses at the impeller outlet, thereby improving the total pressure efficiency of the impeller to a certain extent.

[0004] During use, the existing impeller has high energy consumption and low efficiency in the driving equipment, and at the same time, the structural strength is reduced, and the impeller cannot rotate at a high speed during use. In addition, the impeller has poor corrosion resistance and is not explosion-proof, which will affect the service life and safety of the impeller. In order to solve the above problems, this application proposes an energy-saving aerofoil-shaped backward-inclined impeller. Utility Model Content

[0005] (1) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes an energy-saving aerofoil-shaped backward-inclined impeller, the blades of which are all aerofoil-shaped blades, so that the impeller has low energy consumption and high efficiency. The aluminum alloy aerofoil-shaped impeller is made of a high-strength alloy material, which reduces the overall weight of the impeller, achieves the purpose of reducing the moment of inertia and reducing energy consumption, and at the same time, by welding it into an integrated structure, the high strength characteristics of the impeller are guaranteed. Due to the physical properties of aluminum, the impeller not only has good corrosion resistance and a long service life, but also has spark-proof (explosion-proof) characteristics, so as to solve the problems raised in the background technology.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides an energy-saving aerofoil-shaped backward-inclined impeller, comprising a central fixed disc, a first end fixed disc and a second end fixed disc, wherein the first end fixed disc is arranged on one side of the central fixed disc, and the second end fixed disc is arranged on the other side of the central fixed disc, a first aerofoil-shaped blade is rotatably provided between the central fixed disc and the first end fixed disc, and a second aerofoil-shaped blade is rotatably provided between the central fixed disc and the second end fixed disc;

[0009] The No. 1 airfoil blade and the No. 2 airfoil blade are both distributed in an equidistant ring, and the No. 1 airfoil blade and the No. 2 airfoil blade are arranged in a staggered manner.

[0010] Preferably, a drive shaft is inserted through the roots of the No. 1 airfoil blade and the No. 2 airfoil blade, and the ends of the drive shaft respectively pass through the cavity walls of the No. 1 end fixing disk and the No. 2 end fixing disk.

[0011] Preferably, the ends of the driving shaft are fixedly connected with gears, and the gears are respectively rotated on the surfaces of the No. 1 end fixing plate and the No. 2 end fixing plate.

[0012] Preferably, a driving gear ring is rotatably provided on the surface of the No. 1 end fixing disk and the No. 2 end fixing disk, and the inner ring of the driving gear ring is meshed with the gear through teeth.

[0013] Preferably, the surfaces of the driving gear rings are all threadedly connected with locking screws, and the locking screws are all equidistantly distributed.

[0014] Preferably, a rotation groove is provided on the surface of the No. 1 end fixing disk and the No. 2 end fixing disk, a rotation seat is connected to the bottom surface of the driving gear ring, and the driving gear ring is rotatably connected to the rotation groove through the rotation seat.

[0015] Preferably, a fixed sleeve is inserted through the center of the middle fixed disk, the No. 1 end fixed disk and the No. 2 end fixed disk, and a fixed bracket is provided on the surface of the fixed sleeve. The ends of the fixed bracket are respectively welded to the middle fixed disk, the No. 1 end fixed disk and the No. 2 end fixed disk, and a keyway is provided on the inner ring of the fixed sleeve.

[0016] The above technical solution of the utility model has the following beneficial technical effects:

[0017] 1. In the present invention, both the No. 1 airfoil blade and the No. 2 airfoil blade are airfoil-shaped blades. After the air enters the impeller, due to the protruding back arc of the blade, the airflow is accelerated when it flows over the highest top of the blade, and decelerated at the ventral arc of the blade. The principle is the same as the principle that the wing of an airplane is lifted after gliding at high speed, which provides a part of the power to drive the impeller to rotate, and converts the speed kinetic energy loss of the air into thrust, thereby achieving low energy consumption and high efficiency of the impeller. The aluminum alloy airfoil impeller is made of high-strength alloy material, which reduces the overall weight of the impeller, achieves the purpose of reducing rotational inertia and reducing energy consumption. The middle fixing plate, the No. 1 end fixing plate, the No. 2 end fixing plate, the No. 1 airfoil blade and the No. 2 airfoil blade are all made of aluminum alloy material, which are welded into an integrated structure to ensure the high strength characteristics of the impeller so that the impeller speed can reach more than 3000RPM. Due to the physical properties of aluminum, the impeller not only has good corrosion resistance and long service life, but also has spark-proof (explosion-proof) characteristics.

[0018] 2. The utility model can rotate the driving ring gear by matching the rotating groove and the rotating seat. The driving ring gear can synchronously drive the No. 1 airfoil blade and the No. 2 airfoil blade to deflect through the gear and the driving shaft, and lock them through the locking screw. By adjusting the angles of the No. 1 airfoil blade and the No. 2 airfoil blade, the wind force can be quickly adjusted during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of an energy-saving airfoil-shaped backward-inclined impeller of the utility model;

[0020] Figure 2 This is a schematic cross-sectional view of an energy-saving airfoil-shaped backward-inclined impeller of the present invention;

[0021] Figure 3 This is a schematic diagram of the installation structure of the drive gear ring of an energy-saving airfoil-shaped backward-inclined impeller of the utility model;

[0022] Figure 4 This is a schematic diagram of the aerofoil blade driving structure of an energy-saving aerofoil backward-inclined impeller of the utility model.

[0023] Reference numerals:

[0024] 1. Middle fixed plate; 2. End fixed plate No. 1; 3. End fixed plate No. 2; 4. Airfoil blade No. 1; 5. Airfoil blade No. 2; 6. Gear; 7. Drive ring gear; 8. Locking screw; 9. Rotating groove; 10. Rotating seat; 11. Drive shaft; 12. Fixed sleeve; 13. Fixed bracket; 14. Keyway. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0026] like Figure 1-4 As shown, the energy-saving aerofoil-shaped backward-inclined impeller proposed by the present invention includes a middle fixed disc 1, a No. 1 end fixed disc 2 and a No. 2 end fixed disc 3, wherein the No. 1 end fixed disc 2 is arranged on one side of the middle fixed disc 1, and the No. 2 end fixed disc 3 is arranged on the other side of the middle fixed disc 1. A No. 1 aerofoil-shaped blade 4 is rotatably provided between the middle fixed disc 1 and the No. 1 end fixed disc 2, and a No. 2 aerofoil-shaped blade 5 is rotatably provided between the middle fixed disc 1 and the No. 2 end fixed disc 3;

[0027] The first airfoil blade 4 and the second airfoil blade 5 are both equidistantly distributed in a ring, and the first airfoil blade 4 and the second airfoil blade 5 are staggered.

[0028] It should be noted that

[0029] In this embodiment, if Figure 4 As shown, the roots of the No. 1 airfoil blade 4 and the No. 2 airfoil blade 5 are both penetrated and inserted with a drive shaft 11, and the ends of the drive shaft 11 respectively penetrate the cavity walls of the No. 1 end fixing disk 2 and the No. 2 end fixing disk 3, and the ends of the drive shaft 11 are fixedly connected with gears 6, and the gears 6 are respectively rotatably provided on the surfaces of the No. 1 end fixing disk 2 and the No. 2 end fixing disk 3, and the surfaces of the No. 1 end fixing disk 2 and the No. 2 end fixing disk 3 are both rotatably provided with drive ring gears 7, and the inner ring of the drive ring gear 7 is meshed with the gear 6 through teeth.

[0030] It should be noted that the driving ring gear 7 can be rotated by matching the rotating groove 9 and the rotating seat 10. The driving ring gear 7 can synchronously drive the No. 1 airfoil blade 4 and the No. 2 airfoil blade 5 to deflect through the gear 6 and the driving shaft 11, and lock them through the locking screw 8. By adjusting the angles of the No. 1 airfoil blade 4 and the No. 2 airfoil blade 5, the wind force can be quickly adjusted during use.

[0031] In this embodiment, if Figure 1 As shown, the surfaces of the driving gear ring 7 are all threadedly connected with locking screws 8, and the locking screws 8 are all equidistantly distributed.

[0032] It should be noted that the locking screw 8 can lock the driving ring gear 7. At the same time, the locking screws 8 are equidistantly distributed to ensure the dynamic balance of the impeller during rotation, making the impeller rotation more stable.

[0033] In this embodiment, if Figure 3 As shown, the surfaces of the No. 1 end fixing disk 2 and the No. 2 end fixing disk 3 are both provided with a rotation groove 9, and the bottom surface of the driving gear ring 7 is connected to a rotation seat 10, and the driving gear ring 7 is rotationally connected to the rotation groove 9 through the rotation seat 10.

[0034] It should be noted that the driving gear ring 7 is rotatably connected to the rotating groove 9 via the rotating seat 10 , and the driving gear ring 7 can be rotated by matching the rotating seat 10 with the rotating groove 9 .

[0035] In this embodiment, if Figure 2 As shown, a fixed sleeve 12 is inserted through the center of the middle fixed plate 1, the No. 1 end fixed plate 2 and the No. 2 end fixed plate 3, and a fixed bracket 13 is arranged on the surface of the fixed sleeve 12. The ends of the fixed bracket 13 are respectively welded to the middle fixed plate 1, the No. 1 end fixed plate 2 and the No. 2 end fixed plate 3, and a keyway 14 is provided on the inner ring of the fixed sleeve 12.

[0036] It should be noted that the fixed shaft sleeve 12 is welded to the middle fixed disk 1, the No. 1 end fixed disk 2 and the No. 2 end fixed disk 3 through the fixed bracket 13, so that the middle fixed disk 1, the No. 1 end fixed disk 2 and the No. 2 end fixed disk 3 can form an integral structure. The power output end of the driving device is plugged into the fixed shaft sleeve 12, and is plugged into the key bar on the power output end through the key slot 14, so that the impeller can be driven by the driving device.

[0037] The working principle and use process of the present invention are as follows: the fixed shaft sleeve 12 is welded to the middle fixed disk 1, the No. 1 end fixed disk 2 and the No. 2 end fixed disk 3 through the fixed bracket 13, so that the middle fixed disk 1, the No. 1 end fixed disk 2 and the No. 2 end fixed disk 3 can form an integral structure. The power output end of the driving device is plugged into the fixed shaft sleeve 12, and is plugged into the key bar on the power output end through the key slot 14. The impeller can be driven by the driving device. The No. 1 airfoil blade 4 and the No. 2 airfoil blade 5 are rotatably mounted on the two side surfaces of the middle fixed disk 1 respectively. The No. 1 airfoil blade 4 and the No. 2 airfoil blade 5 are both airfoil-shaped blades. After the air enters the impeller, due to the protruding back arc of the blade, it is accelerated when the airflow flows through the highest top of the blade, and decelerated at the ventral arc of the blade. Its principle is consistent with the principle that the wing of an airplane is lifted after gliding at high speed, which provides a part of the power for driving the impeller to rotate, converts the speed kinetic energy loss of the air into thrust, thereby realizing the impeller Low energy consumption and high efficiency. The aluminum alloy airfoil impeller is made of a high-strength alloy material, which reduces the overall weight of the impeller, reduces the moment of inertia, and reduces energy consumption. The middle fixed plate 1, the No. 1 end fixed plate 2, the No. 2 end fixed plate 3, the No. 1 airfoil blade 4 and the No. 2 airfoil blade 5 are all made of aluminum alloy. They are welded into an integrated structure to ensure the high strength of the impeller and enable the impeller speed to reach more than 3000RPM. Due to the physical properties of aluminum, the impeller not only has good corrosion resistance and a long service life, but also has spark-proof (explosion-proof) characteristics. The driving ring gear 7 can be rotated by matching the rotating groove 9 and the rotating seat 10. The driving ring gear 7 can synchronously drive the No. 1 airfoil blade 4 and the No. 2 airfoil blade 5 to deflect through the gear 6 and the drive shaft 11, and lock them through the locking screw 8. By adjusting the angles of the No. 1 airfoil blade 4 and the No. 2 airfoil blade 5, the wind force can be quickly adjusted during use.

[0038] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims or equivalents thereof.

Claims

1. An energy-saving airfoil-shaped backward-inclined impeller, comprising a middle fixed disc (1), a first end fixed disc (2) and a second end fixed disc (3), wherein the first end fixed disc (2) is arranged on one side of the middle fixed disc (1), and the second end fixed disc (3) is arranged on the other side of the middle fixed disc (1), characterized in that: A first airfoil blade (4) is rotatably provided between the middle fixed disk (1) and the first end fixed disk (2), and a second airfoil blade (5) is rotatably provided between the middle fixed disk (1) and the second end fixed disk (3); The first airfoil blade (4) and the second airfoil blade (5) are both distributed in an equidistant annular arrangement, and the first airfoil blade (4) and the second airfoil blade (5) are arranged in a staggered arrangement.

2. The energy-saving airfoil-shaped backward-inclined impeller according to claim 1, characterized in that: A driving shaft (11) is inserted through the roots of the first airfoil blade (4) and the second airfoil blade (5), and the ends of the driving shaft (11) respectively penetrate the cavity walls of the first end fixing disk (2) and the second end fixing disk (3).

3. The energy-saving airfoil-shaped backward-inclined impeller according to claim 2, characterized in that: The ends of the driving shaft (11) are fixedly connected to gears (6), and the gears (6) are respectively rotatably arranged on the surfaces of the first end fixing disk (2) and the second end fixing disk (3).

4. The energy-saving airfoil-shaped backward-inclined impeller according to claim 3, characterized in that: A driving gear ring (7) is rotatably provided on the surfaces of the first end fixing disc (2) and the second end fixing disc (3), and the inner ring of the driving gear ring (7) is meshed and connected with the gear (6) through teeth.

5. The energy-saving airfoil-shaped backward-inclined impeller according to claim 4, characterized in that: The surfaces of the driving gear rings (7) are all threadedly connected with locking screws (8), and the locking screws (8) are all distributed in an equidistant manner.

6. The energy-saving airfoil-shaped backward-inclined impeller according to claim 5, characterized in that: The surfaces of the No. 1 end fixing disk (2) and the No. 2 end fixing disk (3) are both provided with a rotation groove (9), the bottom surface of the driving gear ring (7) is connected to a rotation seat (10), and the driving gear ring (7) is rotationally connected to the rotation groove (9) via the rotation seat (10).

7. The energy-saving airfoil-shaped backward-inclined impeller according to claim 1, characterized in that: A fixed sleeve (12) is inserted through the center of the middle fixed disk (1), the first end fixed disk (2) and the second end fixed disk (3); a fixed bracket (13) is provided around the surface of the fixed sleeve (12); the ends of the fixed bracket (13) are respectively welded to the middle fixed disk (1), the first end fixed disk (2) and the second end fixed disk (3); and a keyway (14) is provided on the inner ring of the fixed sleeve (12).

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