Backward tilting type oblique flow air supply impeller

Abstract

The invention provides a retroverted oblique flow air supply impeller which comprises air supply blades with the two ends connected with a fixed wheel and a flow guide ring correspondingly, the air supply blades are annularly distributed between the fixed wheel and the flow guide ring at equal intervals, and the two ends of each air supply blade are horizontally hinged to the outer wall of the fixed wheel and the outer wall of the flow guide ring. An angle adjusting wheel of the air draft turbine is connected to the center of the front face, elastically rotates in the center of the fixed wheel in a limiting mode, and is connected with the end of the air supply blade in a limiting, clamping and sliding mode; the fixed wheel rotates to drive the air supply blades and the angle adjusting wheel to rotate through wind resistance, and the angles of the two ends of the air supply blades are changed. The movable angles of the blades can be controlled, the angles of the blades can be changed when the air inlet amount is appropriate, meanwhile, through rotation of the angle adjusting wheel, the air draft turbine can be driven to rotate, and the air draft performance of the center of the flow guide ring is improved.

Description

Technical Field

[0001] The invention relates to the field of oblique flow air supply impellers, and in particular to a backward inclined oblique flow air supply impeller. Background Art

[0002] The backward inclined oblique flow impeller is an impeller design used in ventilation equipment. It has a specific geometric shape and angle configuration to improve the flow performance of the airflow and improve the overall efficiency of the fan. This design usually includes a circular blade base plate, a hub, a guide ring and multiple blades. The air inlet and outlet ends of the blades are twisted. The angle design of the blades makes the airflow flow more smoothly in the impeller, thereby improving the efficiency and performance of the fan.

[0003] The backward inclined oblique flow air supply impeller works by rotating the hub to rotate the multiple blades connected to the guide ring and the inside of the hub in a circular distribution, absorbing air from the inside of the guide ring and discharging it through the outside of the hub, giving the air a certain centrifugal effect, and all of it is compressed inside the wind tube inclined in the middle of the circular blade bottom plate, and discharged to the outside at a high speed through the inclined wind tube angle.

[0004] However, the space in the center of the hub is limited, and the blades absorb air separately at the front and rear. After the front blades absorb the air in front of the hub air inlet, the effect of the rear blades is relatively low, making it difficult to significantly improve the impeller's air extraction capacity, and the overall working capacity of the air supply impeller is still insufficient.

[0005] Therefore, we made improvements on this and proposed a backward inclined oblique flow air supply impeller. Summary of the invention

[0006] The purpose of the present invention is to address the low air extraction capacity of the rear blades inside the existing air supply impeller.

[0007] In order to achieve the above-mentioned object of the invention, the present invention provides the following backward inclined oblique flow air supply impeller to improve the above-mentioned problem.

[0008] The specific application is as follows:

[0009] A backward inclined oblique flow air supply impeller, comprising

[0010] Air supply blades are connected to a fixed wheel and a guide ring at both ends, the air supply blades are distributed in an annular shape and are equidistant between the fixed wheel and the guide ring, and the two ends of the air supply blades are horizontally hinged to the fixed wheel and the outer wall of the guide ring;

[0011] The center of the front side is connected with an angle adjustment wheel of the exhaust turbine, the angle adjustment wheel is limited and elastically rotated at the center of the fixed wheel, and the angle adjustment wheel is limited and engaged and slidably connected with the end of the air supply blade;

[0012] The fixed wheel rotates to drive the air supply blades and the angle adjustment wheel to rotate through wind resistance, thereby changing the angles of the two ends of the air supply blades;

[0013] An extension shaft connected to the top end of the central shaft of the exhaust turbine;

[0014] Tension strips are slid inside the extension shaft and are distributed in an annular manner with equal spacing;

[0015] A reinforcing wire connected inside the extension shaft and locked to the end of the air supply blade;

[0016] One end of the tensioning strip is in contact with the reinforcing steel wire, and the tensioning strip is driven to push the reinforcing steel wire to slide inside the extension shaft, thereby adjusting the tension of the connection between the reinforcing steel wire and the air supply blade.

[0017] As a preferred technical solution of the present application, the top surface of the outer wall of the air supply blade is provided with inclined grooves that are arranged equidistantly and in an inclined direction, and horizontal hinge holes are provided at the left and right ends of the air supply blade. A horizontal hinge rod is fixed at the position where the fixed wheel and the guide ring connect the air supply blade, and the hinge rod rotates inside the hinge hole.

[0018] As a preferred technical solution of the present application, the outer wall of the fixed wheel is connected with an annularly equidistantly distributed wind shield connecting strips, the other end of the wind shield connecting strip is fixed to the end of the outer wall of the guide ring, and a first spring groove distributed in an annular shape is provided on one side of the fixed wheel connected to the angle adjustment wheel, and a convex rotating groove is provided at the center of the fixed wheel.

[0019] As a preferred technical solution of the present application, an air inlet is opened at the center of the guide ring, an oblique flow outlet is formed between the guide ring and the fixed wheel, and the air supply blades are located between the oblique flow outlets.

[0020] As a preferred technical solution of the present application, a circumferentially distributed storage and adjustment opening is provided at the end of the outer wall of the angle adjustment wheel, and one end of the air supply blade close to the angle adjustment wheel is limitedly engaged and slides inside the storage and adjustment opening; a side of the angle adjustment wheel connected to the fixed wheel is provided with a second spring groove distributed in an annular manner and equidistantly, the second spring groove is fitted and opposite to the first spring groove, and high-pressure springs are provided inside the first spring groove and the second spring groove; a T-shaped hinge block is fixed at the center of the side of the angle adjustment wheel connected to the fixed wheel, a bearing is fitted on the outer side of the T-shaped hinge block, the T-shaped hinge block and the bearing are limitedly rotated inside the convex rotating groove, and an exhaust turbine is provided on the side of the angle adjustment wheel facing away from the fixed wheel.

[0021] As a preferred technical solution of the present application, the circumference of one end of the extension shaft away from the angle adjustment wheel is provided with equidistantly arranged circular holes, a limiting notch is provided on the side of the circular hole close to the outer wall of the side of the extension shaft, a first threaded hole is provided at the center of the end of the extension shaft with the circular hole, a cover screw is provided inside the first threaded hole, the outer wall of the cover screw is fitted to the end of the extension shaft, and a disassembly hexagonal groove is provided at the center of one side of the cover screw facing away from the extension shaft.

[0022] As a preferred technical solution of the present application, the tensioning strip slides inside the circular hole and the limiting groove, an adjusting rod for limited rotation is passed through the tensioning strip, one end of the adjusting rod is connected to a driven sliding rod, the end of the adjusting rod connected to the driven sliding rod is passed through the driven sliding rod and is threadedly connected to the driven sliding rod, and the end of the driven sliding rod away from the adjusting rod is slidingly connected with the limiting strip in a limited engagement manner.

[0023] As a preferred technical solution of the present application, a limiting ring is fixed in the middle of the outer wall of the adjusting rod, and the limiting ring is limited in rotation inside the tensioning strip. A threaded rod is provided at one end of the limiting ring connected to the driven sliding rod, and a cross groove is provided at the center of the end of the adjusting rod away from the threaded rod.

[0024] As a preferred technical solution of the present application, a second threaded hole is provided at the center of the driven sliding rod, and the threaded rod is threadedly screwed into the second threaded hole. Symmetrical positioning strips are fixed on both sides of the outer wall of the driven sliding rod, and the positioning strips slide in a limited position on the inner wall of the tensioning strip. A block top rod is fixed at the end of the driven sliding rod away from the second threaded hole, and the block top rod is located on the outside of the tensioning strip and abuts against the end of the tensioning strip. A wire sliding groove is provided on the outer wall of the block top rod, and a sliding limit block is provided at the position where the limit strip is connected to the driven sliding rod, and the sliding limit block is embedded in the inner wall of the wire sliding groove.

[0025] As a preferred technical solution of the present application, a wire positioning block is provided at one end of the reinforcement steel wire connected to the extension shaft. The wire positioning block is embedded and slides inside the circular hole. The end of the block top rod away from the second threaded hole abuts against the outer wall of the wire positioning block. The end of the wire positioning block connected to the reinforcement steel wire is embedded in the wire sliding groove.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] In the scheme of the present application: through the movable design of the air supply blades, the amount of air absorbed by the air supply blades during rotation and the centrifugal force applied to the air when discharging the air can be changed, thereby increasing the air intake and improving the air discharge pressure. The angle adjustment wheel added at the center of the blades can control the movable angle of the blades, so that the blades can change their blade angles when the air intake is appropriate. At the same time, the rotation of the angle adjustment wheel can also drive the exhaust turbine to rotate, thereby improving the exhaust performance at the center of the guide ring.

[0028] 1. The present invention changes the connection between the air supply blade and the fixed wheel and the guide ring into a movable connection, so that the angles of the air inlet end and the air outlet end of the air supply blade can be changed, so that the air inlet at the air inlet end is enlarged, the air intake volume is increased, and the air outlet is gradually changed from an inclined direction to a vertical direction, so that the air has a stronger centrifugal force when it is discharged, and the discharged air has a stronger pressure.

[0029] 2. The present invention adds an angle adjustment wheel at the center of the air supply blade. When the air supply impeller rotates, the resistance encountered by the air supply blade when absorbing air can push the angle adjustment wheel to rotate, so that the angle adjustment wheel can control the movable angle of the air supply blade, so that the angle of the air supply blade can be automatically adjusted according to the wind force during the operation of the air supply impeller. When the speed of the air supply blade gradually increases, the air intake and the pressure of the exhaust air can be increased, thereby improving the overall working performance of the impeller.

[0030] 3. The present invention provides an exhaust turbine at the center of the angle adjustment wheel. After the angle of the air supply blades is adjusted by the angle adjustment wheel, the high-speed rotation of the exhaust turbine can increase the suction force at the center of the impeller, provide air transportation for the air supply blades after the angle is changed, so that the air transportation of the impeller can always maintain high performance and avoid the problem of insufficient air intake after the angle of the air supply blades is adjusted. At the same time, high-speed air flow is provided deep in the center of the impeller to be transported to the inside of the air supply blades, further improving the overall air supply performance of the impeller.

[0031] 4. The present invention adds an extension shaft and a tension strip at the center of the angle adjustment wheel, so that after the air supply blades rotate at high speed under the adjustment of the angle adjustment wheel, the air supply blades and the angle adjustment wheel are reinforced by reinforcing steel wires, thereby enhancing the stability of the air supply blades when working under high pressure. At the same time, a fixed fulcrum is added to the air supply blades, which is beneficial to improving the pressure resistance of the air supply blades when subjected to wind resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the overall structure of a backward inclined oblique flow air supply impeller provided by the present invention;

[0033] Figure 2 for Figure 1 A schematic cross-sectional view of the middle portion of the structure shown;

[0034] Figure 3 for Figure 1 The schematic diagram of the structure of the blade and the guide ring being separated is shown;

[0035] Figure 4 for Figure 3 The structure of the blade and the guide ring connection position is shown in the exploded and enlarged schematic diagram;

[0036] Figure 5 for Figure 3 A schematic diagram of the structure of the blade side shown;

[0037] Figure 6 for Figure 5 The schematic diagram of the structure of the blade and the angle adjustment wheel shown;

[0038] Figure 7 for Figure 6 The structural schematic diagram of the front side of the angle adjustment wheel shown;

[0039] Figure 8 for Figure 7 The schematic diagram of the structure of the extension shaft and the tension strip decomposed as shown;

[0040] Fig. 9 for Figure 8 A schematic structural diagram of a cross-section of the middle portion of the extension shaft shown;

[0041] Fig.10 for Figure 8 An enlarged schematic diagram of the structure of the tension strip shown;

[0042] Fig.11 for Fig.10 The schematic diagram of the structural breakdown inside the tensioning strip shown;

[0043] Fig.12 for Fig.11 The structural schematic diagram of the connection position between the block push rod and the limit strip is shown.

[0044] Indicated in the figure:

[0045] 1. Air supply blade; 11. Inclined slot; 12. Reamed hole; 13. Hinge rod;

[0046] 2. Fixed wheel; 21. Wind shield connecting strip; 22. First spring slot; 23. Convex rotating slot;

[0047] 3. Guide ring; 31. Air inlet; 32. Oblique air outlet;

[0048] 4. Angle adjustment wheel; 41. Storage adjustment port; 42. Second spring slot; 43. T-shaped hinge block; 44. Bearing; 45. High-pressure spring; 46. Air extraction turbine;

[0049] 5. Extension shaft; 51. Round hole; 52. Limiting notch; 53. First threaded hole; 54. Cover screw; 55. Disassembly and assembly hexagonal slot;

[0050] 6. tensioning strip; 61. limiting strip; 611. sliding limiting block; 62. adjusting rod; 621. limiting ring; 622. threaded rod; 623. cross groove; 63. driven sliding rod; 631. second threaded hole; 632. positioning strip; 633. block ejector rod; 634. wire sliding groove;

[0051] 7. Reinforcement steel wire; 71. Steel wire positioning block. DETAILED DESCRIPTION

[0052] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments 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 creative work should fall within the scope of protection of the present invention.

[0053] As described in the background art, the air extraction capacity of the rear blades inside the air supply impeller is relatively low.

[0054] In order to solve this technical problem, the present invention provides a backward-inclined oblique flow air supply impeller, which is used to automatically change the inclination angle of the blades in the impeller according to the wind force, thereby improving the compression performance after exhaustion, and improving the air suction capacity at the center of the impeller, thereby enhancing the air intake effect of the guide ring inlet.

[0055] Specifically, please refer to Figure 1-Figure 12 The backward inclined oblique flow air supply impeller specifically comprises:

[0056] Air supply blades 1 are connected to a fixed wheel 2 and a guide ring 3 at both ends, the air supply blades 1 are distributed in an annular shape and are equidistant between the fixed wheel 2 and the guide ring 3, and the two ends of the air supply blades 1 are horizontally hinged to the outer wall of the fixed wheel 2 and the guide ring 3;

[0057] An angle adjustment wheel 4 is connected to the center of the front face with an air extraction turbine 46, and the angle adjustment wheel 4 is elastically rotated at the center of the fixed wheel 2, and the angle adjustment wheel 4 is slidably connected with the end of the air supply blade 1 in a limited position.

[0058] The fixed wheel 2 rotates to drive the air supply blade 1 and the angle adjustment wheel 4 to rotate through wind resistance, thereby changing the angles of both ends of the air supply blade 1;

[0059] An extension shaft 5 connected to the top of the central shaft of the exhaust turbine 46;

[0060] Tension strips 6 sliding inside the extension shaft 5 and distributed in an annular shape and at equal intervals;

[0061] A reinforcing steel wire 7 connected to the inside of the extension shaft 5 and locked with the end of the air supply blade 1;

[0062] One end of the tensioning strip 6 is in contact with the reinforcing steel wire 7 , and the tensioning strip 6 is driven to push the reinforcing steel wire 7 to slide inside the extension shaft 5 , thereby adjusting the tension of the connection between the reinforcing steel wire 7 and the air supply blade 1 .

[0063] The backward inclined oblique flow air supply impeller provided by the present invention can change the amount of air absorbed by the air supply blade 1 during rotation and the centrifugal force applied to the air when discharging the air through the movable design of the air supply blade 1, thereby increasing the air intake and improving the air discharge pressure. The angle adjustment wheel 4 added at the center of the blade can control the movable angle of the blade, so that the blade can change the blade angle when the air intake is appropriate. At the same time, the rotation of the angle adjustment wheel 4 can also drive the exhaust turbine 46 to rotate, thereby improving the exhaust performance at the center of the guide ring 3.

[0064] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0065] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0066] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0067] Example 1

[0068] Please refer to Figure 1-Figure 12 A backward inclined oblique flow air supply impeller, wherein the top surface of the outer wall of the air supply blade 1 is provided with inclined grooves 11 arranged in an inclined direction and at equal intervals, and horizontal reaming holes 12 are provided at the left and right ends of the air supply blade 1, and a horizontal hinge rod 13 is fixed at the position where the fixed wheel 2 and the guide ring 3 connect the air supply blade 1, and the hinge rod 13 rotates inside the reaming hole 12;

[0069] The outer wall of the fixed wheel 2 is connected with an annular equidistantly distributed wind shield connecting strip 21, the other end of the wind shield connecting strip 21 is fixed to the end of the outer wall of the guide ring 3, and a first spring groove 22 distributed in an annular shape is opened on one side of the fixed wheel 2 connected to the angle adjustment wheel 4, and a convex rotating groove 23 is opened at the center of the fixed wheel 2;

[0070] An air inlet 31 is provided at the center of the guide ring 3 , an oblique air outlet 32 ​​is formed between the guide ring 3 and the fixed wheel 2 , and the air supply blades 1 are located between the oblique air outlet 32 ​​.

[0071] The connection between the air supply blade 1 and the fixed wheel 2 and the guide ring 3 is changed to a movable connection, so that the angles of the air inlet end and the air outlet end of the air supply blade 1 can be changed, so that the air inlet 31 at the air inlet end is enlarged, the air intake amount is increased, and the air outlet is gradually changed from an inclined direction to a vertical direction, so that the air has a stronger centrifugal force when it is discharged, and the discharged air has a stronger pressure.

[0072] Example 2

[0073] The backward inclined oblique flow air supply impeller provided in Example 1 is further optimized, specifically, as follows Figure 1-Figure 12 A circumferentially distributed storage and adjustment opening 41 is provided at the end of the outer wall of the angle adjustment wheel 4, and one end of the air supply blade 1 close to the angle adjustment wheel 4 is limited and engaged and slides inside the storage and adjustment opening 41. A side of the angle adjustment wheel 4 connected to the fixed wheel 2 is provided with a circularly equidistantly distributed second spring groove 42, and the second spring groove 42 is fitted and opposite to the first spring groove 22. A high-pressure spring 45 is provided inside the first spring groove 22 and the second spring groove 42. A T-shaped hinge block 43 is fixed at the center of the side of the angle adjustment wheel 4 connected to the fixed wheel 2, and a bearing 44 is sleeved on the outside of the T-shaped hinge block 43. The T-shaped hinge block 43 and the bearing 44 are limited to rotate inside the convex rotating groove 23, and an exhaust turbine 46 is provided on the side of the angle adjustment wheel 4 away from the fixed wheel 2.

[0074] An angle adjustment wheel 4 is added at the center of the air supply blade 1. When the air supply impeller rotates, the resistance encountered by the air supply blade 1 when absorbing air can push the angle adjustment wheel 4 to rotate, so that the angle adjustment wheel 4 can control the movable angle of the air supply blade 1, so that the angle of the air supply blade 1 can be automatically adjusted according to the wind force during the operation of the air supply impeller, so that when the speed of the air supply blade 1 gradually increases, the air intake and the pressure of the exhaust air can be increased, thereby improving the overall working performance of the impeller.

[0075] An exhaust turbine 46 is provided at the center of the angle adjustment wheel 4. After the angle of the air supply blade 1 is adjusted by the angle adjustment wheel 4, the suction force at the center of the impeller can be increased through the high-speed rotation of the exhaust turbine 46, so as to provide air delivery for the air supply blade 1 after the angle is changed, so that the air delivery of the impeller can always maintain high performance and avoid the problem of insufficient air intake after the angle of the air supply blade 1 is adjusted. At the same time, high-speed air flow is provided deep in the center of the impeller to be delivered to the inside of the air supply blade 1, thereby further improving the overall air supply performance of the impeller.

[0076] Example 3

[0077] The backward inclined oblique flow air supply impeller provided in Example 1 or 2 is further optimized, specifically, as follows Figure 1-Figure 12 As shown, the circumference of the end of the extension shaft 5 away from the angle adjustment wheel 4 is provided with equidistantly arranged circular holes 51, and a limiting notch 52 is provided on one side of the circular hole 51 close to the outer wall of the side of the extension shaft 5. A first threaded hole 53 is provided at the center of the end of the extension shaft 5 with the circular hole 51, and a cover screw 54 is provided inside the first threaded hole 53. The outer wall of the cover screw 54 is attached to the end of the extension shaft 5, and a disassembly hexagonal groove 55 is provided at the center of one side of the cover screw 54 away from the extension shaft 5.

[0078] The tensioning strip 6 slides inside the circular hole 51 and the limiting notch 52, and an adjusting rod 62 for limited rotation is provided inside the tensioning strip 6. One end of the adjusting rod 62 is connected to a driven sliding rod 63. One end of the adjusting rod 62 connected to the driven sliding rod 63 is provided inside the driven sliding rod 63 and is threadedly connected to the driven sliding rod 63. One end of the driven sliding rod 63 away from the adjusting rod 62 is limitedly engaged and slidably connected with the limiting strip 61.

[0079] A limiting ring 621 is fixed to the middle of the outer wall of the adjusting rod 62, and the limiting ring 621 is limited to rotate inside the tensioning strip 6. A threaded rod 622 is provided at one end of the limiting ring 621 connected to the driven sliding rod 63, and a cross groove 623 is provided at the center of one end of the adjusting rod 62 away from the threaded rod 622.

[0080] A second threaded hole 631 is provided at the center of the driven sliding rod 63, and the threaded rod 622 is threadedly screwed inside the second threaded hole 631. Symmetrical positioning strips 632 are fixed on both sides of the outer wall of the driven sliding rod 63. The positioning strips 632 slide on the inner wall of the tensioning strip 6. A block push rod 633 is fixed to the end of the driven sliding rod 63 away from the second threaded hole 631. The block push rod 633 is located on the outside of the tensioning strip 6 and abuts against the end of the tensioning strip 6. A steel wire sliding groove 634 is provided on the outer wall of the block push rod 633. A sliding limit block 611 is provided at the position where the limit bar 61 is connected to the driven sliding rod 63. The sliding limit block 611 is embedded and slides on the inner wall of the steel wire sliding groove 634.

[0081] A wire positioning block 71 is provided at one end of the reinforcement wire 7 connected to the extension shaft 5. The wire positioning block 71 is embedded and slides inside the circular hole 51. The end of the block top rod 633 away from the second threaded hole 631 abuts against the outer wall of the wire positioning block 71. The end of the wire positioning block 71 connected to the reinforcement wire 7 is embedded in the wire sliding groove 634.

[0082] An extension shaft 5 and a tensioning strip 6 are added at the center of the angle adjustment wheel 4, so that after the air supply blade 1 is adjusted by the angle adjustment wheel 4 when rotating at high speed, the air supply blade 1 and the angle adjustment wheel 4 can be reinforced with a reinforcing steel wire 7, thereby enhancing the stability of the air supply blade 1 when working under high pressure. At the same time, a fixed fulcrum is added to the air supply blade 1, which is beneficial to improving the pressure resistance of the air supply blade 1 when it is subjected to wind resistance.

[0083] The use process of the backward inclined oblique flow air supply impeller provided by the present invention is as follows:

[0084] The driving device (motor) drives the fixed wheel 2 to rotate, and the rotation of the fixed wheel 2 drives the guide ring 3 to rotate through the wind cover connecting strip 21. The rotation of the fixed wheel 2 and the guide ring 3 drives the air supply blade 1 to rotate. The rotation of the air supply blade 1 can transport the air to the air outlet between the guide ring 3 and the fixed wheel 2 through its own inclined structure and oblique installation design during the rotation process through the blades located inside the guide ring 3.

[0085] When the fixed wheel 2 rotates at a high speed, the wind resistance encountered by the air supply blade 1 gradually increases, and the wind force absorbed and transported by the air supply blade 1 gradually increases, thereby gradually increasing the wind force and pressure at the air outlet between the fixed wheel 2 and the guide ring 3, and when the fixed wheel 2 rotates at a high speed, the air supply blade 1 will continue to absorb the air inside the guide ring 3 and transport it to the rear of the air supply blade 1, squeezing the air during the transportation process and increasing the pressure of the air flow transportation, and when the air supply blade 1 rotates at a high speed, the air between the air supply blades 1 that has not been sent out of the air outlet will be thrown outward by the rotation of the air supply blade 1, so that the air is clamped by the centrifugal force and sent outward, further increasing the pressure of air transportation (the centrifugal force exerted on the air by the air supply blade 1 when rotating at different angles is different).

[0086] During the high-speed rotation of the fixed wheel 2, the angle adjustment wheel 4 connected at its center will rotate along with it. During the rotation of the angle adjustment wheel 4, the exhaust turbine 46 connected to its outer wall will rotate along with it. The rotation of the exhaust turbine 46 will form resistance with the air due to the blades on its outer wall, driving the air to flow deep into the interior of the exhaust turbine 46. At the same time, the air will exert resistance on the exhaust turbine 46.

[0087] When the exhaust turbine 46 encounters resistance, it will apply thrust to the high-pressure spring 45. When the high-pressure spring 45 encounters pressure, it will absorb the pressure and shrink. At this time, the angle adjustment wheel 4 will rotate. When the pressure that the high-pressure spring 45 can withstand is greater than the resistance applied by the air to the exhaust turbine 46, the angle adjustment wheel 4 will stop rotating. When the rotation speed of the exhaust turbine 46 is very high, the high-pressure spring 45 will be compressed to the maximum value, so that the angle adjustment wheel 4 forms a stable connection with the fixed wheel 2. At this time, the angle adjustment wheel 4 will also be adjusted to the maximum value.

[0088] It should be noted that when the rotation speed of the exhaust turbine 46 reaches the maximum value, the suction provided by the exhaust turbine 46 will enhance the overall suction of the guide ring 3, allowing the high-speed air flowing in the center and deep inside of the guide ring 3 to be transported to the inside of the air supply blade 1.

[0089] When the angle adjustment wheel 4 rotates due to resistance, the air supply blade 1 connected to the inside of the storage and adjustment port 41 will be driven by the rotation and rotate around the position of the rubber rod. When the air supply blade 1 rotates, since the air supply blade 1 is hinged to the fixed wheel 2 and the guide ring 3 in a horizontal hinged position, and part of the hinged position is at the center, the end located inside the storage and adjustment port 41 will move partially toward the inside of the storage and adjustment port 41, and will fit against the inner wall of the storage and adjustment port 41 when moving, and there is enough sliding space inside the storage and adjustment port 41.

[0090] When the air supply blade 1 rotates and moves inside the storage adjustment port 41, the air inlet 31 at one end of the air supply blade 1 located inside the guide ring 3 will increase, and the air absorbed by the rotation of the air supply blade 1 itself will increase, while the air outlet at the other end of the air supply blade 1 will change the air outlet direction, and gradually change the inclined air outlet to a vertical state. At this time, the air intake of the air supply blade 1 increases, and the wind pressure at the air outlet position increases. Since the angle of the air outlet position of the air supply blade 1 changes, the centrifugal force of the air inside the air supply blade 1 increases, and the air pressure at the position of the air supply blade 1 is increased, thereby increasing the overall wind pressure of the air supply impeller.

[0091] It should be noted that: since an exhaust turbine 46 is added at the center of the impeller, when the air inlet 31 of the air supply blade 1 is adjusted and the air intake volume increases, the exhaust turbine 46 absorbs external air at high speed and transports it to the inside of the guide ring 3, which can ensure that there is enough wind force inside the guide ring 3 for the air supply blade 1 to absorb, and the air absorbed by the exhaust turbine 46 itself will be transported to the deep inside of the guide ring 3, so that the deep position of the air supply blade 1 can still have high-performance air transportation, thereby improving the overall working performance of the impeller.

[0092] At the same time, when the exhaust turbine 46 absorbs air and transports it to the inside of the air supply blade 1, it can provide a higher wind pressure for the position of the air supply blade 1, so that the air supply blade 1 can balance the pressure of the air in the transportation process and the air sent out through the air supply blade 1, thereby increasing the air outlet pressure and air volume by enhancing the air inlet pressure.

[0093] When the air supply blade 1 rotates in the initial stage, the air supply blade 1 will rotate based on its own tilt angle to absorb and transport air. When the high-speed rotation angle is adjusted, the exhaust turbine 46 will provide the air supply blade 1 with sufficient air.

[0094] It should be noted that after the angle adjustment of the air supply blade 1 is completed, the centrifugal force at the air outlet position increases and the air outlet direction will be affected by the inclined slot 11 of the air supply blade 1, so that the air is transported obliquely to the rear of the air supply blade, thereby ensuring the air transport flow direction of the impeller.

[0095] When the angle adjustment wheel 4 adjusts the angle of the air supply blade 1 through the storage adjustment port 41, the extension shaft 5 connected to one end of its central axis will fix the end of the air supply blade 1 through the reinforcement steel wire 7, thereby improving the support strength of the air supply blade 1 against wind resistance when the air supply blade 1 rotates, and when the angle adjustment wheel 4 rotates, the extension shaft 5 will rotate to apply tension to the reinforcement steel wire 7, driving it to wind around the outside of the extension shaft 5, so that after the angle adjustment wheel 4 is rotated and adjusted, the reinforcement steel wire 7 can still maintain sufficient tension on the air supply blade 1, thereby ensuring the support strength of the air supply blade 1.

[0096] It should be noted that when the air supply blade 1 rotates, the resistance it encounters can also exert a driving force on the storage and adjustment opening 41 to allow the angle adjustment wheel 4 to rotate.

[0097] When the reinforcement steel wire 7 needs to be replaced, remove one end of the fixed steel wire connected to the air supply blade 1, then remove the cover screw 54 at the end of the extension shaft 5, take out the tensioning strip 6 connected to the reinforcement steel wire 7 that needs to be replaced, pull the reinforcement steel wire 7 to remove the steel wire positioning block 71 from the inside of the circular hole 51, replace it with a new reinforcement steel wire 7, let the steel wire positioning block 71 slide inside the circular hole 51, and the other end is locked with the air supply blade 1.

[0098] Afterwards, the tensioning strip 6 is inserted into the circular hole 51 and the limiting groove 52, and the tension of the reinforcing steel wire 7 is observed or detected through the tensioning equipment. When the tension is insufficient, the adjusting rod 62 is rotated by the cross screw rod to allow the driven sliding rod 63 connected to the threaded rod 622 at the other end of the adjusting rod 62 to slide deep into the circular hole 51. When the driven sliding rod 63 slides, the block top rod 633 connected to the other end thereof will push the steel wire positioning block 71 to tighten the reinforcing steel wire 7.

[0099] After the position between the reinforcing steel wire 7 and the air supply blade 1 is tightened, the cover screw is inserted into the first threaded hole 53 , and the tensioning strip 6 is pressed and covered on the inner side of the circular hole 51 by the cover screw 54 .

[0100] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0101] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A backward inclined oblique flow air supply impeller, characterized in that: include An air supply blade (1) having two ends respectively connected to a fixed wheel (2) and a guide ring (3), the air supply blade (1) being distributed in an annular shape and equidistantly between the fixed wheel (2) and the guide ring (3), and the two ends of the air supply blade (1) being horizontally hinged to the outer wall of the fixed wheel (2) and the guide ring (3); An angle adjustment wheel (4) of an exhaust turbine (46) is connected at the center of the front face, the angle adjustment wheel (4) is elastically rotated at the center of the fixed wheel (2) in a limited position, and the angle adjustment wheel (4) is slidably connected to the end of the air supply blade (1) in a limited position engagement; The fixed wheel (2) rotates to drive the air supply blade (1) and the angle adjustment wheel (4) to rotate through wind resistance, thereby changing the angles at both ends of the air supply blade (1); An extension shaft (5) connected to the top end of the central shaft of the exhaust turbine (46); Tension strips (6) sliding inside the extension shaft (5) and distributed in an annular shape and at equal intervals; A reinforcing steel wire (7) connected to the interior of the extension shaft (5) and locked with the end of the air supply blade (1); One end of the tensioning strip (6) is in contact with the reinforcing steel wire (7), and the tensioning strip (6) is driven to push the reinforcing steel wire (7) to slide inside the extension shaft (5), thereby adjusting the tension of the connection between the reinforcing steel wire (7) and the air supply blade (1).

2. The backward inclined oblique flow air supply impeller according to claim 1, characterized in that: The top surface of the outer wall of the air supply blade (1) is provided with inclined grooves (11) arranged at equal intervals, and horizontal hinge holes (12) are provided at the left and right ends of the air supply blade (1). A horizontal hinge rod (13) is fixed at the position where the fixed wheel (2) and the guide ring (3) connect the air supply blade (1), and the hinge rod (13) rotates inside the hinge hole (12).

3. The backward inclined oblique flow air supply impeller according to claim 2, characterized in that: The outer wall of the fixed wheel (2) is connected to an annular equidistantly distributed wind shield connecting strips (21), the other end of the wind shield connecting strip (21) is fixed to the end of the outer wall of the guide ring (3), a first spring groove (22) distributed in an annular shape is provided on one side of the fixed wheel (2) connected to the angle adjustment wheel (4), and a convex rotating groove (23) is provided at the center of the fixed wheel (2).

4. The backward inclined oblique flow air supply impeller according to claim 1, characterized in that: An air inlet (31) is provided at the center of the guide ring (3), an oblique air outlet (32) is formed between the guide ring (3) and the fixed wheel (2), and the air supply blades (1) are located between the oblique air outlet (32).

5. The backward inclined oblique flow air supply impeller according to claim 3, characterized in that: The end of the outer wall of the angle adjustment wheel (4) is provided with a circumferentially distributed storage adjustment opening (41); one end of the air supply blade (1) close to the angle adjustment wheel (4) is limitedly engaged and slid inside the storage adjustment opening (41); a side of the angle adjustment wheel (4) connected to the fixed wheel (2) is provided with an annularly equidistantly distributed second spring groove (42); the second spring groove (42) is closely aligned with the first spring groove (22); high-pressure springs (45) are arranged inside the first spring groove (22) and the second spring groove (42); a T-shaped hinge block (43) is fixed at the center of the side of the angle adjustment wheel (4) connected to the fixed wheel (2); a bearing (44) is sleeved on the outer side of the T-shaped hinge block (43); the T-shaped hinge block (43) and the bearing (44) are limitedly rotated inside the convex rotating groove (23); and a suction turbine (46) is arranged on the side of the angle adjustment wheel (4) away from the fixed wheel (2).

6. The backward inclined oblique flow air supply impeller according to claim 1, characterized in that: The circumference of one end of the extension shaft (5) away from the angle adjustment wheel (4) is provided with equidistantly arranged circular holes (51); a limiting notch (52) is provided on one side of the circular hole (51) close to the outer wall of the side of the extension shaft (5); a first threaded hole (53) is provided at the center of one end of the extension shaft (5) where the circular hole (51) is provided; a cover screw (54) is provided inside the first threaded hole (53); the outer wall of the cover screw (54) is attached to the end of the extension shaft (5); and a disassembly hexagonal groove (55) is provided at the center of one side of the cover screw (54) away from the extension shaft (5).

7. The backward inclined oblique flow air supply impeller according to claim 6, characterized in that: The tensioning strip (6) slides inside the circular hole (51) and the limiting groove (52); an adjusting rod (62) for limiting rotation is passed through the tensioning strip (6); one end of the adjusting rod (62) is connected to a driven sliding rod (63); one end of the adjusting rod (62) connected to the driven sliding rod (63) is passed through the driven sliding rod (63) and is threadedly connected to the driven sliding rod (63); one end of the driven sliding rod (63) away from the adjusting rod (62) is slidably connected to the limiting strip (61) in a limiting engagement manner.

8. The backward inclined oblique flow air supply impeller according to claim 7, characterized in that: A limiting ring (621) is fixed in the middle of the outer wall of the adjusting rod (62), and the limiting ring (621) is limitedly rotated inside the tensioning strip (6). A threaded rod (622) is provided at one end of the limiting ring (621) connected to the driven sliding rod (63), and a cross groove (623) is provided at the center of one end of the adjusting rod (62) away from the threaded rod (622).

9. The backward inclined oblique flow air supply impeller according to claim 8, characterized in that: A second threaded hole (631) is provided at the center of the driven sliding rod (63), and the threaded rod (622) is threadedly screwed into the second threaded hole (631). Symmetrical positioning strips (632) are fixed on both sides of the outer wall of the driven sliding rod (63), and the positioning strips (632) slide on the inner wall of the tensioning strip (6) in a limited manner. A block push rod (633) is fixed at one end of the driven sliding rod (63) away from the second threaded hole (631), and the block push rod (633) is located on the outer side of the tensioning strip (6) and abuts against the end of the tensioning strip (6). A steel wire sliding groove (634) is provided on the outer wall of the block push rod (633), and a sliding limit block (611) is provided at the position where the limit strip (61) is connected to the driven sliding rod (63), and the sliding limit block (611) is embedded and slides on the inner wall of the steel wire sliding groove (634).

10. The backward inclined oblique flow air supply impeller according to claim 9, characterized in that: A wire positioning block (71) is provided at one end of the reinforcing steel wire (7) connected to the extension shaft (5); the wire positioning block (71) is embedded and slides inside the circular hole (51); one end of the block push rod (633) away from the second threaded hole (631) abuts against the outer wall of the wire positioning block (71); and one end of the wire positioning block (71) connected to the reinforcing steel wire (7) is embedded in the steel wire sliding groove (634).

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