CN111828376A

CN111828376A - Centrifugal fan impeller

Info

Publication number: CN111828376A
Application number: CN202010658782.3A
Authority: CN
Inventors: 李电豹; 刘旭
Original assignee: Individual
Current assignee: Shenli Fan Co ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2020-10-27
Anticipated expiration: 2040-07-09
Also published as: CN111828376B

Abstract

The invention relates to the field of impellers, in particular to a centrifugal fan impeller which comprises an inner fan barrel, wherein a rotating mechanism is fixedly arranged inside the inner fan barrel, the rotating mechanism is rotationally connected with the inner fan barrel through a stabilizing mechanism, a backflow preventing mechanism is fixedly arranged on the outer ring of the rotating mechanism, airflow is prevented from diffusing to the side edge of the impeller through a wind shield by the arranged backflow preventing mechanism, the impeller blade is used for driving a wind shielding rotating plate to rotate, when the airflow moves to an air outlet along with the impeller blade, the wind shielding rotating plate is contacted with a fillet at the top end of the air outlet, the airflow is prevented from flowing back to the inner fan barrel along with the impeller blade, the airflow is blown out of a fan, then the wind shielding rotating plate is driven to rotate to be retracted into the inner fan barrel through a cambered surface and a fillet, the influence on the rotation of the impeller blade is prevented, when the wind shielding rotating plate moves to the air outlet, thereby obviously improving the pneumatic efficiency of the centrifugal fan.

Description

Centrifugal fan impeller

Technical Field

The invention relates to the field of fan impellers, in particular to a centrifugal fan impeller.

Background

The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.

In the exhaust system that dust is more, use centrifuge to carry out convulsions, and the in-process of centrifugal fan operation, the inner wall of fan wheel and fan still has great clearance, when fan wheel drives the air current and flows, the air current can flow along with the impeller blade, and then makes a fan wheel blow and is drawn by fan wheel to a wind air current of air outlet, returns inside the fan once more, and then unable discharge centrifugal fan, make centrifugal fan's aerodynamic efficiency reduce, can make the fan life-span reduce for a long time.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a centrifugal fan impeller.

The technical scheme adopted by the invention for solving the technical problems is as follows: a centrifugal fan impeller comprises a fan inner barrel, a rotating mechanism is fixedly arranged in the fan inner barrel and is rotationally connected with the fan inner barrel through a stabilizing mechanism, an anti-backflow mechanism is fixedly arranged on the outer ring of the rotating mechanism, the rotating mechanism comprises a motor, a rotating shaft, a stabilizing plate, a clamping groove, an impeller rear plate, a circular groove, a fixed clamping block, an impeller blade and an impeller front plate, the motor is fixedly connected to the center of the outer surface of the fan inner barrel, the output end of the motor is fixedly connected with the rotating shaft, the other end of the rotating shaft penetrates through the center of the outer surface of the fan inner barrel and extends into the fan inner barrel, the stabilizing plate is fixedly sleeved on the surface of one end of the rotating shaft, which is positioned in the fan inner barrel, the clamping groove is formed in the top end of the rotating shaft, the impeller rear plate is sleeved on the surface of, the inside fixedly connected with fixture block of circular slot, the fixture block joint is inside the draw-in groove, the impeller blade that a plurality of equidistance of the preceding lateral wall outer lane fixedly connected with of impeller back plate set up, it is a plurality of the other end fixed connection of impeller blade is on the outer lane back wall of same impeller front plate.

The stabilizing mechanism comprises a stabilizing ring, a clamping block, a groove, a first rotating wheel, a rotating hole, a second rotating wheel, a first sliding rail and a second sliding rail, wherein the stabilizing ring is fixedly sleeved on the inner wall of the inner barrel of the fan, a plurality of clamping blocks fixedly connected with the inner wall of the stabilizing ring at equal intervals, the groove is formed in the clamping block, the first rotating wheel is connected to the groove in a rotating mode, the rotating hole is formed in the inner wall of each of two ends of the clamping block, the second rotating wheel is connected to the rotating hole in multiple modes, the stabilizing plate is connected to the rotating block in the rotating mode, the first sliding rail is formed in the outer circle side wall of the stabilizing plate, the second sliding rail is formed in the outer circle side wall of two sides of the stabilizing plate, the first rotating wheel is clamped inside the first sliding rail, and the second rotating wheel is clamped inside the second sliding rail.

The anti-backflow mechanism comprises wind screens, fixing plates, springs, a wind shielding rotating plate, rotating rods, a cambered surface and a fillet, wherein the wind screens are fixedly sleeved on the surfaces of an impeller rear plate and an impeller front plate and are connected with a plurality of fixing plates of equidistance fixedly connected with between the wind screens, one side of each fixing plate close to an impeller blade is fixedly connected with the corresponding spring, the other end of each spring is fixedly connected with the wind shielding rotating plate, the wind shielding rotating plate is connected between the two wind screens through the rotating rods in a rotating mode, the cambered surface is arranged at one end, close to the side wall of the fan inner cylinder, of the wind shielding rotating plate, and the fillet is.

Specifically, an air outlet is formed in the surface of the inner barrel of the fan.

Specifically, the front end opening part fixedly connected with fan protecgulum of fan inner tube, the air intake corresponding with the impeller blade has been seted up on the surface of fan protecgulum, the air intake is located the inside one end fixedly connected with spacing ring of fan inner tube, one side fixedly connected with annular slider that the spacing ring is close to the impeller blade, annular slider rotates to be connected inside annular spout, annular spout sets up on the surface of impeller front bezel.

Specifically, the wind blocking rotating plates and the impeller blades are the same in number; and the wind-shielding rotating plate is arranged corresponding to the impeller blade.

The invention has the beneficial effects that:

(1) according to the centrifugal fan impeller, due to the arranged backflow prevention mechanism, airflow is prevented from diffusing to the side edge of the impeller by the aid of the wind shield, the impeller blade is used for driving the wind shield rotating plate to rotate, when the airflow moves to the air outlet along with the impeller blade, the wind shield rotating plate is in contact with the round angle at the top end of the air outlet, the airflow is prevented from flowing back to the inner portion of the fan inner barrel along with the impeller blade, the airflow is blown out of the fan, then the wind shield rotating plate is driven to rotate to be retracted to the inner portion of the fan inner barrel through the arc surface and the round angle, influence on rotation of the impeller blade is prevented, when the wind shield rotating plate moves to the air outlet, the wind shield rotating plate is pulled to jack up by the spring, the airflow driven by the impeller blade.

(2) According to the centrifugal fan impeller, the stabilizing mechanism is arranged, the first sliding rail and the second sliding rail which are arranged on the stabilizing plate are utilized, the first rotating wheel and the second rotating wheel in the clamping block are clamped in the first sliding rail and the second sliding rail, the stabilizing plate is limited and fixed, stable and shaking is prevented, the impeller is further prevented from shaking, the impeller is stable when rotating, friction between the impeller and the inner wall of a fan is prevented, and the service life of the impeller is prolonged.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural diagram of a centrifugal fan impeller provided by the present invention;

FIG. 2 is a cross-sectional view of a stabilizing mechanism for a centrifugal fan impeller provided in accordance with the present invention;

FIG. 3 is a cross-sectional view of a back flow prevention mechanism for a centrifugal fan impeller according to the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 1 of a centrifugal fan impeller according to the present invention;

FIG. 5 is an enlarged view of portion B of FIG. 3 of a centrifugal fan impeller according to the present invention;

fig. 6 is a structural diagram of a stabilizing mechanism of an impeller of a centrifugal fan provided by the invention.

In the figure: 1. an inner barrel of the fan; 2. a rotating mechanism; 21. a motor; 22. a rotating shaft; 23. a stabilizing plate; 24. a card slot; 25. an impeller back plate; 26. a circular groove; 27. fixing the fixture block; 28. impeller blades; 29. an impeller front plate; 3. a stabilizing mechanism; 31. a stabilizing ring; 32. a clamping block; 33. a groove; 34. a first runner; 35. hole turning; 36. a second runner; 37. a first slide rail; 38. a second slide rail; 4. a backflow prevention mechanism; 41. a wind deflector; 42. a fixing plate; 43. a spring; 44. a wind shielding rotary plate; 45. a rotating rod; 46. a cambered surface; 47. round corners; 5. an air outlet; 6. a blower front cover; 7. an air inlet; 8. a limiting ring; 9. an annular slider; 10. an annular chute.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-6, the centrifugal fan impeller according to the present invention includes a fan inner cylinder 1, a rotating mechanism 2 is fixedly disposed inside the fan inner cylinder 1, the rotating mechanism 2 is rotatably connected to the fan inner cylinder 1 through a stabilizing mechanism 3, an anti-backflow mechanism 4 is fixedly disposed on an outer ring of the rotating mechanism 2, the rotating mechanism 2 includes a motor 21, a rotating shaft 22, a stabilizing plate 23, a slot 24, an impeller back plate 25, a circular slot 26, a fixing block 27, an impeller blade 28, and an impeller front plate 29, the motor 21 is fixedly connected to a center of an outer surface of the fan inner cylinder 1, an output end of the motor 21 is fixedly connected to the rotating shaft 22, another end of the rotating shaft 22 extends to the inside through the center of the outer surface of the fan inner cylinder 1, the fixing block 23 is connected to a surface of one end of the rotating shaft 22 located inside the fan inner cylinder 1, the slot 24 is formed at a top end of the, circular slot 26 has been seted up at the rear side wall center department of impeller backplate 25, circular slot 26's inside fixedly connected with fixed fixture block 27, fixed fixture block 27 joint is inside draw-in groove 24, the impeller blade 28 that a plurality of equidistance of front side wall outer lane fixedly connected with of impeller backplate 25 set up, the other end fixed connection of a plurality of impeller blades 28 is on the outer lane rear side wall of same impeller front bezel 29, at first with motor 21 fixed connection in the surface center department of fan inner tube 1, then with stabilizer plate 23 and pivot 22 fixed socket joint, insert the inside of circular slot 26 with pivot 22 again, make fixed fixture block 27 and draw-in groove 24 joint, then will take turns turbine backplate 25 and stabilizer plate 23 fixed connection through the bolt, make the impeller install in the inside of fan inner tube 1, then it is fixed with fan inner tube 1 with fan protecgulum 6, easy to assemble.

Specifically, the stabilizing mechanism 3 includes a stabilizing ring 31, clamping blocks 32, a groove 33, a first rotating wheel 34, a rotating hole 35, a second rotating wheel 36, a first sliding rail 37 and a second sliding rail 38, the stabilizing ring 31 is fixedly connected to the inner wall of the fan inner cylinder 1, the inner wall of the stabilizing ring 31 is fixedly connected with a plurality of clamping blocks 32 at equal intervals, the groove 33 is formed inside the clamping block 32, the first rotating wheel 34 is rotatably connected inside the groove 33, the rotating holes 35 are formed on the inner walls of both ends of the clamping block 32, the second rotating wheel 36 is rotatably connected inside the rotating hole 35, the stabilizing plate 23 is rotatably connected inside the clamping blocks 32, the first sliding rail 37 is formed on the outer circumferential side wall of the stabilizing plate 23, the second sliding rail 38 is formed on the outer circumferential side walls of both sides of the stabilizing plate 23, the first rotating wheel 34 is clamped inside the first sliding rail 37, the second rotating wheel 36 is clamped inside the second sliding rail 38, the motor 21 is started, the motor 21 drives the rotating shaft, the rotating shaft 22 drives the stabilizing plate 23 to rotate, a first rotating wheel 34 and a second rotating wheel 36 are connected to the inside of a first sliding rail 37 and a second sliding rail 38 which are arranged on the surface of the stabilizing plate 23 in a clamped mode, the first rotating wheel 34 and the second rotating wheel 36 are connected to the inside of the clamping block 32 in a rotating mode, the clamping block 32 is fixedly connected to the inner wall of the fan inner barrel 1 through the stabilizing ring 31, the stabilizing plate 23 is effectively prevented from shaking, the impeller is stable when rotating, the impeller is prevented from rubbing with the inner wall of the fan, and the service life of the impeller is prolonged.

Specifically, the backflow prevention mechanism 4 comprises wind shields 41, fixing plates 42, springs 43, wind shielding rotating plates 44, rotating rods 45, cambered surfaces 46 and round corners 47, the two wind shields 41 are fixedly sleeved on the surfaces of the impeller rear plate 25 and the impeller front plate 29, a plurality of fixing plates 42 are fixedly connected between the two wind shields 41 at equal intervals, the springs 43 are fixedly connected to one sides of the fixing plates 42 close to the impeller blades 28, the other ends of the springs 43 are fixedly connected with the wind shielding rotating plates 44, the wind shielding rotating plates 44 are rotatably connected between the two wind shields 41 through the rotating rods 45, the cambered surfaces 46 are arranged at one ends of the wind shielding rotating plates 44 close to the side wall of the fan inner barrel 1, the round corners 47 are arranged on the side wall of the fan inner barrel 1, the impeller blades 28 drive airflow to move to the air outlet 5 when rotating, the wind shielding rotating plates 44 are in contact with the round corners 47 at the top, and then make the air current can only move to the fan inner tube 1 outside, then drive the commentaries on classics board 44 that keeps out the wind through cambered surface 46 and fillet 47 and rotate and withdraw inside the fan inner tube, prevent to cause the influence to the rotation of impeller blade 28, when the commentaries on classics board 44 that keeps out the wind moves to the air outlet, through the spring 43 pulling commentaries on classics board 44 jack-up that keeps out the wind, and then can prevent the air current backward flow that impeller blade 28 drove all the time, and then make the improvement that the pneumatic efficiency of centrifugal fan reaches showing.

Specifically, the air outlet 5 is formed in the surface of the inner fan barrel 1, when the inner fan barrel is used, the impeller blades 28 rotate to drive the airflow to move to the air outlet 5, the wind blocking rotating plate 44 is in contact with a round angle 47 at the top end of the air outlet 5, the airflow is prevented from flowing back to the inner fan barrel 1 along with the impeller blades 28, and the airflow can only move towards the outside of the inner fan barrel 1.

Specifically, the front end opening part fixedly connected with fan protecgulum 6 of fan inner tube 1, fan protecgulum 6 offers the air intake 7 corresponding with impeller blade 28 on the surface, air intake 7 is located the inside one end fixedly connected with spacing ring 8 of fan inner tube 1, one side fixedly connected with annular slider 9 that spacing ring 8 is close to impeller blade 28, annular slider 9 rotates to be connected inside annular spout 10, annular spout 10 is seted up on the surface of impeller front bezel 29, carry out spacing fixed to impeller front bezel 29, prevent that impeller front bezel 29 from droing.

Specifically, the wind-blocking rotating plates 44 are the same in number as the impeller blades 28, and when in use, the wind-blocking rotating plates 44 are arranged corresponding to the impeller blades 28, and each wind-blocking rotating plate 44 corresponds to one impeller blade 28, so that the wind-blocking rotating plates 44 prevent the airflow driven by the impeller blades 28 from flowing back.

When the fan inner barrel is used, firstly, the motor 21 is fixedly connected to the center of the outer surface of the fan inner barrel 1, then the stabilizing plate 23 is fixedly sleeved with the rotating shaft 22, then the rotating shaft 22 is inserted into the circular groove 26, the fixing clamping block 27 is clamped with the clamping groove 24, then the turbine rear plate 25 is fixedly connected with the stabilizing plate 23 through the bolt, the impeller is installed in the fan inner barrel 1, then the fan front cover 6 is fixed with the fan inner barrel 1, the installation is convenient, the motor 21 is started, the motor 21 drives the rotating shaft 22 to rotate, the rotating shaft 22 drives the stabilizing plate 23 to rotate, the first rotating wheel 34 and the second rotating wheel 36 are clamped in the first sliding rail 37 and the second sliding rail 38 which are arranged on the surface of the stabilizing plate 23, the first rotating wheel 34 and the second rotating wheel 36 are rotatably connected in the clamping block 32, the clamping block 32 is fixedly connected to the inner wall of the fan inner barrel 1 through the stabilizing ring 31, when the impeller is used, the motor 21 is started to drive the impeller blade 28 to rotate, the impeller blade 28 drives the impeller blade to rotate when rotating, airflow rotates to the air outlet 5, the impeller blade 28 is driven to rotate continuously, the airflow is driven to rotate by the impeller blade 28 and contacts with the fillet 47 at the top end of the air outlet 5 through the wind shielding rotating plate 44, the airflow barrier column driven by the impeller blade 28 can be used for preventing the airflow from flowing back to the inner barrel 1 of the fan along with the impeller blade 28, the airflow can only move to the outer part of the inner barrel 1 of the fan, then the impeller blade 28 rotates to drive the cambered surface 46 to contact with the fillet 47, the wind shielding rotating plate 44 is driven to rotate by the cambered surface 46 and the fillet 47 to be retracted into the inner barrel 1 of the fan, the influence on the rotation of the impeller blade 28 is prevented, the wind shielding rotating plate 44 is arranged corresponding to the impeller blade 28 when in use, each wind-shielding rotating plate 44 corresponds to one impeller blade 28, so that the wind-shielding rotating plate 44 prevents backflow of airflow driven by the impeller blades 28, when the wind-shielding rotating plate 44 moves to the air outlet 5, the wind-shielding rotating plate 44 is pulled by the spring 43 to rotate and jack up so that the wind-shielding rotating plate 44 contacts with the fillet 47, and then backflow of airflow driven by the impeller blades 28 can be prevented all the time, and further the pneumatic efficiency of the centrifugal fan is remarkably improved.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a centrifugal fan impeller, includes fan inner tube (1), its characterized in that: a rotating mechanism (2) is fixedly arranged inside the fan inner cylinder (1), the rotating mechanism (2) is rotatably connected with the fan inner cylinder (1) through a stabilizing mechanism (3), and an anti-backflow mechanism (4) is fixedly arranged on the outer ring of the rotating mechanism (2); the rotating mechanism (2) comprises a motor (21), a rotating shaft (22), a stabilizing plate (23), a clamping groove (24), an impeller rear plate (25), a circular groove (26), a fixed clamping block (27), impeller blades (28) and an impeller front plate (29), the motor (21) is fixedly connected to the center of the outer surface of the fan inner barrel (1), the rotating shaft (22) is fixedly connected to the output end of the motor (21), the other end of the rotating shaft (22) penetrates through the center of the outer surface of the fan inner barrel (1) to extend into the inner portion, the stabilizing plate (23) is fixedly sleeved on the surface of one end of the rotating shaft (22) which is positioned inside the fan inner barrel (1), the clamping groove (24) is formed in the top end of the rotating shaft (22), the impeller rear plate (25) is sleeved on the surface of the rotating shaft (22), the circular groove (26) is formed in the center of the rear side, the inside fixedly connected with fixed fixture block (27) of circular slot (26), fixed fixture block (27) joint is inside draw-in groove (24), impeller blade (28) that a plurality of equidistance of preceding lateral wall outer lane fixedly connected with of impeller back plate (25) set up, and is a plurality of the other end fixed connection of impeller blade (28) is on the outer lane back wall of same impeller front plate (29).

2. A centrifugal fan impeller according to claim 1, wherein: the stabilizing mechanism (3) comprises a stabilizing ring (31), clamping blocks (32), a groove (33), a first rotating wheel (34), a rotating hole (35), a second rotating wheel (36), a first sliding rail (37) and a second sliding rail (38), the stabilizing ring (31) is fixedly sleeved on the inner wall of the fan inner barrel (1), a plurality of clamping blocks (32) are fixedly connected on the inner wall of the stabilizing ring (31) at equal intervals, the groove (33) is formed in the clamping block (32), the first rotating wheel (34) is rotatably connected in the groove (33), the rotating holes (35) are formed in the inner walls of the two ends of the clamping blocks (32), the second rotating wheel (36) is rotatably connected in the rotating holes (35), the stabilizing plate (23) is rotatably connected in the clamping block (32), the first sliding rail (37) is formed in the outer side wall of the stabilizing plate (23), second slide rails (38) have all been seted up on the excircle lateral wall of stabilizer plate (23) both sides, first runner (34) joint is inside first slide rail (37), second runner (36) joint is inside second slide rail (38).

3. A centrifugal fan impeller according to claim 1, wherein: the anti-backflow mechanism (4) comprises wind shields (41), fixing plates (42), springs (43), wind shielding rotating plates (44), rotating rods (45), cambered surfaces (46) and round corners (47), the two wind shields (41) are fixedly sleeved on the surfaces of an impeller rear plate (25) and an impeller front plate (29), the fixing plates (42) are fixedly connected between the two wind shields (41) at equal intervals, one side of the fixed plate (42) close to the impeller blade (28) is fixedly connected with a spring (43), the other end of the spring (43) is fixedly connected with a wind-shielding rotating plate (44), the wind-shielding rotating plate (44) is rotatably connected between the two wind shields (41) through a rotating rod (45), the wind-proof rotary plate (44) is provided with a cambered surface (46) at one end close to the side wall of the inner fan cylinder (1), and the side wall of the inner fan cylinder (1) is provided with a round angle (47).

4. A centrifugal fan impeller according to claim 1, wherein: an air outlet (5) is formed in the surface of the fan inner barrel (1).

5. A centrifugal fan impeller according to claim 1, wherein: the utility model discloses a fan, including fan inner tube (1), fan front cover (6), air intake (7) corresponding with impeller blade (28) are seted up on the surface of fan front cover (6), air intake (7) are located the inside one end fixedly connected with spacing ring (8) of fan inner tube (1), one side fixedly connected with annular slider (9) that spacing ring (8) are close to impeller blade (28), annular slider (9) rotate to be connected inside annular spout (10), annular spout (10) are seted up at impeller front bezel (29) on the surface.

6. A centrifugal fan impeller according to claim 3, wherein: the wind blocking rotary plate (44) and the impeller blades (28) are the same in number, and the wind blocking rotary plate (44) and the impeller blades (28) are arranged correspondingly.