Cross-flow fan blade capable of being rapidly installed

Abstract

The cross-flow fan blade capable of being rapidly installed comprises an impeller, a sleeve is fixedly arranged on one side of the impeller, a rotating shaft is movably arranged in the sleeve, a limiting assembly used for clamping the rotating shaft is arranged in the sleeve, grooves are symmetrically formed in the two sides of the sleeve in the axial direction, and the rotating shaft is arranged in the grooves. And a positioning assembly for positioning the limiting assembly is arranged in the groove. According to the cross-flow fan blade capable of being rapidly installed, through cooperation of the rotating cylinder, the circular truncated cone and the limiting plate, rotation of the rotating cylinder drives the limiting plate to abut against the rotating shaft, abutting limiting of the rotating shaft and the sleeve is achieved, abutting fixing of the rotating shaft and the sleeve can be achieved only through rotation of the rotating cylinder, and operation is convenient and rapid.

Description

Technical Field

[0001] The invention relates to the technical field of crossflow fan blades, in particular to a crossflow fan blade that can be quickly installed. Background Art

[0002] A crossflow fan blade is a multi-blade, long cylindrical impeller with forward multi-wing blades, which allows the airflow to flow through the impeller and reach a long distance. It is widely used in equipment such as air conditioners, air conditioning fans and air curtains. The air enters the blade grid from the opening of the impeller, passes through the inside of the impeller, and then is discharged into the volute from the other side of the blade grid to form a working airflow. The airflow velocity field in the impeller is unstable and there is a vortex, which causes a circulating flow at the output end of the impeller, thereby affecting the performance and efficiency of the fan.

[0003] In the prior art, the installation of cross-flow fan blades is usually through a sleeve at one end that is sleeved on the outside of the rotating shaft and fixed to the rotating shaft by screwing, one end of the screw abuts against the outside of the rotating shaft, and then the rotation of the rotating shaft can drive the sleeve and the fan blades to rotate synchronously through the screw, but the fan blades will produce certain vibrations in actual work, which will cause looseness between the screw and the rotating shaft over time, which will cause the sleeve and the fan blades to shake during rotation. If the screw is completely disengaged from the rotating shaft, the sleeve and the fan blades will no longer rotate, which will cause the air supply effect of equipment such as air conditioners to be greatly reduced, or even completely lose its function, seriously affecting the normal use of the equipment.

[0004] Therefore, it is necessary to design a cross-flow fan blade that can ensure that the sleeve and the rotating shaft are in contact for a long time. Summary of the invention

[0005] The object of the present invention is to provide a cross-flow fan blade that can be quickly installed to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a cross-flow fan blade that can be quickly installed, comprising an impeller, a sleeve fixedly provided on one side of the impeller, a rotating shaft movably provided in the sleeve, a limiting assembly for clamping the rotating shaft provided in the sleeve, grooves axially symmetrically provided on both sides of the sleeve, a positioning assembly for positioning the limiting assembly provided in the groove.

[0007] As a further solution of the present invention: the limiting assembly includes a rotating cylinder, which is threadedly connected to the opening of the sleeve, a circular ring is fixedly arranged inside the sleeve, and a plurality of limiting plates are arranged in a circular array outside the circular ring, the limiting plates are made of elastic material, the limiting plates are movably abutted against the rotating shaft, the bottom of the rotating cylinder is located in the sleeve and a frustum is fixedly arranged at the end, and the inner wall of the frustum is movably abutted against the outer side of the limiting plate.

[0008] As a further solution of the present invention: the positioning assembly includes a movable column, a slanted plate is fixedly provided on one side of the movable column, a movable ring is fixedly sleeved on the outer side of the rotating cylinder, the movable ring is movably abutted against the slanted plate, a fixed cylinder is laterally fixedly provided in the groove, a movable cylinder is movably provided in the fixed cylinder, the movable column is movably provided in the movable cylinder, a fixed plate is fixedly provided on the side of the movable cylinder away from the movable column, a circular plate is fixedly provided on the side of the movable column away from the slanted plate, the circular plate is slidably connected to the movable cylinder, and a reset spring is fixedly provided between the circular plate and the fixed plate.

[0009] As a further solution of the present invention: a notch is provided on the outside of the fixed cylinder, a lifting plate is movably abutted in the notch, the lifting plate is movably arranged in the movable cylinder, a connecting plate is fixedly connected between the lifting plate and the fixed plate, the connecting plate is made of elastic material, a square groove is provided on the lifting plate, the circular plate movably passes through the square groove and movably abuts against one side of the lifting plate.

[0010] As a further solution of the present invention: an oblique groove is provided on a side of the movable column close to the lifting plate, the movable column movably passes through the square groove and the oblique groove movably abuts against the lifting plate.

[0011] As a further solution of the present invention: the sleeve is located in the groove and has a through hole, the movable cylinder is fixedly provided with a movable rod at one end away from the inclined plate, the movable rod movably passes through the fixed cylinder and is slidably connected to the through hole, a first spring is fixedly connected between the end of the movable cylinder and the inner wall of the fixed cylinder, and the movable rod is movably arranged in the middle of the first spring.

[0012] As a further solution of the present invention: a positioning plate is fixedly provided on the inner wall of the movable cylinder, a movable plate is fixedly provided on the outer side of the movable column, and the movable plate is movably pressed against the positioning plate.

[0013] As a further solution of the present invention: a horizontal plate is fixedly arranged above the groove, the horizontal plate is fixedly connected to the sleeve, vertical rods are axially symmetrically fixedly arranged on both sides of the horizontal plate, a rotating plate is movably sleeved on the outer side of the vertical rod, one side of the rotating plate is movably abutted against the outer side of the rotating cylinder, and a second spring is fixedly connected between the two rotating plates away from the rotating cylinder.

[0014] As a further solution of the present invention: a horizontal groove is opened in the center of the horizontal plate, a screw is rotatably arranged in the horizontal groove and the threads on both sides of the screw are rotated in opposite directions, push rods are axially symmetrically connected to the two sides of the screw, the push rods are slidably connected to the horizontal groove, and the push rods are movably abutted against the rotating plate.

[0015] As a further solution of the present invention: a gear is fixedly sleeved on the outer side of the center of the screw rod, a rack is fixedly arranged on the outer side of the moving cylinder, and the gear is meshed with the rack for transmission.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the interaction between the rotating cylinder, the round table and the limit plate, when the rotating cylinder rotates, it can drive the limit plate to contact the rotating shaft, thereby achieving precise limit between the rotating shaft and the sleeve; 2. The movement of the movable column and the inclined plate produces an abutment effect on the movable ring, thereby preventing the movable ring from moving in the opposite direction, which further ensures the close contact between the rotating shaft and the sleeve; 3. The contact between the rotating rod and the rotating cylinder prevents the rotating cylinder from rotating, ensuring that the rotating cylinder does not rotate relative to the sleeve, while preventing the contact surface between the rotating shaft and the sleeve from sliding relative to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the sleeve in the present invention; Figure 3 for Figure 2 The enlarged schematic diagram of part A in the middle; Figure 4 It is a schematic diagram of the internal structure of the sleeve in the present invention; Figure 5 It is a schematic diagram of the external structure of the fixed cylinder in the present invention; Figure 6 It is a schematic diagram of the internal structure of the fixed cylinder in the present invention; Figure 7 It is a schematic diagram of the internal structure of the moving cylinder in the present invention; Figure 8 for Figure 7 The enlarged schematic diagram of part B in the middle; Fig. 9 It is a schematic diagram of the structure of the transverse groove in the present invention; Fig.10 It is a schematic diagram of the structure of the gear in the present invention; In the figure: 1, impeller; 2, sleeve; 201, groove; 202, through hole; 3, rotating shaft; 4, limit assembly; 41, rotating cylinder; 42, circular ring; 43, limit plate; 44, frustum; 5, positioning assembly; 51, movable column; 511, inclined groove; 52, inclined plate; 53, moving ring; 6, fixed cylinder; 61, notch; 7, moving cylinder; 8, fixed plate; 9, circular plate; 10, reset spring; 11, lifting plate; 111, square groove; 12, connecting plate; 13, moving rod; 14, first spring; 15, positioning plate; 16, moving plate; 17, horizontal plate; 171, horizontal groove; 18, vertical rod; 19, rotating plate; 20, second spring; 21, screw rod; 22, push rod; 23, gear; 24, rack. DETAILED DESCRIPTION

[0018] See also Figure 1-Figure 10 In an embodiment of the present invention, a cross-flow fan blade that can be quickly installed includes an impeller 1, a sleeve 2 is fixedly provided on one side of the impeller 1, a rotating shaft 3 is movably provided in the sleeve 2, a limiting component 4 for clamping the rotating shaft 3 is provided in the sleeve 2, grooves 201 are axially symmetrically provided on both sides of the sleeve 2, and a positioning component 5 for positioning the limiting component 4 is provided in the groove 201; one side of the impeller 1 is rotatably connected with internal components of equipment such as an air conditioner, the sleeve 2 is sleeved on the outside of the rotating shaft 3, the rotating shaft 3 is clamped and limited by the limiting component 4, so that the sleeve 2 and the rotating shaft 3 are abutted together, the other side of the rotating shaft 3 is connected to the motor of the rotating shaft 3, the motor is installed inside the equipment, the motor can drive the rotating shaft 3, the sleeve 2 and the impeller 1 to rotate synchronously together, so that an airflow is generated at the output end of the impeller 1, and the limiting component 4 clamps the rotating shaft 3 and then uses the positioning component 5 to position the limiting component 4, so that the sleeve 2 and the rotating shaft 3 can be prevented from loosening during use.

[0019] See also Figure 2 and Figure 4As shown, in the present embodiment, preferably, the limiting assembly 4 comprises a rotating cylinder 41, the rotating cylinder 41 is threadedly adapted to be connected with the opening of the sleeve 2, a circular ring 42 is fixedly provided inside the sleeve 2, a plurality of limiting plates 43 are provided in a circular array outside the circular ring 42, the limiting plates 43 are made of elastic material, the limiting plates 43 are movably abutted against the rotating shaft 3, the bottom of the rotating cylinder 41 is located at the sleeve 2 and a round table 44 is fixedly provided at the end, and the inner wall of the round table 44 is movably abutted against the outer side of the limiting plate 43; when the rotating cylinder 41 is rotated, the rotating cylinder 41 will move downward along the sleeve 2 while rotating, thereby driving the round table 44 to move downward The downward movement of the table 44 will abut against the outer side of the limit plate 43, thereby driving multiple limit plates 43 to move in the direction close to the rotating shaft 3 until the inner side of the limit plate 43 abuts against the outer wall of the rotating shaft 3. In this way, the rotating shaft 3 and the limit plate 43 abut against each other, and the rotation of the rotating shaft 3 will drive the limit plate 43, the ring 42 and the sleeve 2 to rotate synchronously. In this step, the abutment and fixation of the rotating shaft 3 and the sleeve 2 can be achieved only by rotating the rotating cylinder 41. Compared with the traditional method of abutting the rotating shaft 3 with screws, the operation is more convenient and quick, because the method of using screws requires the operator to carry a screwdriver to tighten the screws during installation, which causes inconvenience to the operator.

[0020] See Figure Figure 2-Figure 3 and Figure 5As shown, in this embodiment, preferably, the positioning assembly 5 includes a movable column 51, a slanted plate 52 is fixedly provided on one side of the movable column 51, a movable ring 53 is fixedly sleeved on the outer side of the rotating cylinder 41, and the movable ring 53 is movably abutted against the slanted plate 52, a fixed cylinder 6 is laterally fixedly provided in the groove 201, and a movable cylinder 7 is movably provided in the fixed cylinder 6, the movable column 51 is movably provided in the movable cylinder 7, a fixed plate 8 is fixedly provided on the side of the movable cylinder 7 away from the movable column 51, a circular plate 9 is fixedly provided on the side of the movable column 51 away from the slanted plate 52, the circular plate 9 is slidably connected with the movable cylinder 7, and a return spring 10 is fixedly provided between the circular plate 9 and the fixed plate 8; the rotation and descent of the rotating cylinder 41 is achieved by threading, and when the descent of the rotating cylinder 41 causes the limit plate 43 to abut against the rotating shaft 3, the threaded contact portion of the rotating cylinder 41 and the sleeve 2 reaches the end, and at this time the rotating cylinder 41 can no longer move downward along the sleeve 2 The slanted plate 52 will move to the top of the moving ring 53 so that the moving ring 53 cannot move upward, thus ensuring that the limit plate 43 can clamp the rotating shaft 3 stably.

[0021] See also Figure 5-Figure 7As shown, in this embodiment, preferably, a notch 61 is provided on the outside of the fixed cylinder 6, and a lifting plate 11 is movably abutted in the notch 61, and the lifting plate 11 is movably arranged in the movable cylinder 7, and a connecting plate 12 is fixedly connected between the lifting plate 11 and the fixed plate 8, and the connecting plate 12 is made of elastic material, and a square groove 111 is provided on the lifting plate 11, and the circular plate 9 movably passes through the square groove 111 and movably abuts against one side of the lifting plate 11; in the initial state, the top of the lifting plate 11 abuts against one side of the notch 61, and the circular plate 9 abuts against the side of the lifting plate 11 close to the fixed plate 8, so that the movable column 51 can remain stable, and the downward movement of the rotating cylinder 41 will drive The moving ring 53 moves downward, thereby driving the inclined plate 52 and the movable column 51 to move into the groove 201, thereby compressing the reset spring 10. At this time, the lifting plate 11 is moved downward so that the lifting plate 11 does not abut against the notch 61. The downward movement of the lifting plate 11 will drive the connecting plate 12 to deflect downward a little, and then the moving cylinder 7 is moved along the fixed cylinder 6 in the direction close to the moving ring 53. The moving fixed plate 8, the connecting plate 12, and the lifting plate 11 of the moving cylinder 7 move synchronously together. At the same time, when the moving ring 53 no longer abuts against the inclined plate 52, the reset spring 10 will drive the circular plate 9, the movable column 51 and the inclined plate 52 to move toward the side close to the moving ring 53 until they abut against the top of the moving ring 53, thereby limiting the movement of the moving ring 53.

[0022] See also Figure 7 As shown, in the present embodiment, preferably, an inclined groove 511 is provided on the side of the movable column 51 close to the lifting plate 11, and the movable column 51 movably passes through the square groove 111, and the inclined groove 511 movably abuts against the lifting plate 11; the movable column 51 close to the fixed plate 8 will make the side of the movable column 51 with the inclined groove 511 movably pass through the square groove 111, and the inclined groove 511 part will abut against the lifting plate 11, thereby driving the lifting plate 11 to move downward to release the abutment with the notch 61. This step is more convenient and quick to operate by linking the release of the abutment between the lifting plate 11 and the notch 61 with the movement of the movable column 51.

[0023] See also Figure 2-Figure 3 and Figure 5-Figure 7As shown, in this embodiment, preferably, the sleeve 2 is located in the groove 201 and has a through hole 202, and the moving cylinder 7 is fixedly provided with a moving rod 13 at one end away from the inclined plate 52, and the moving rod 13 movably passes through the fixed cylinder 6 and is slidably connected with the through hole 202, and a first spring 14 is fixedly connected between the end of the moving cylinder 7 and the inner wall of the fixed cylinder 6, and the moving rod 13 is movably arranged in the middle of the first spring 14; in the initial state, the top of the lifting plate 11 abuts against the inner wall of the notch 61, and the first spring 14 is in a compressed state, and the moving ring 53 moves downward to drive the inclined plate 52 and the movable column 51 to pass through the square groove 111 to move toward the side close to the fixed plate 8, and the movable column 51 moves during the movement. The inclined groove 511 drives the lifting plate 11 to move downward to release the abutment with the notch 61. When the moving ring 53 is no longer in abutment with the inclined plate 52, the first spring 14 restores its state and drives the moving cylinder 7, the fixed plate 8, the connecting plate 12, the return spring 10, the circular plate 9, the moving rod 13, the movable column 51 and the inclined plate 52 to move together in the direction close to the moving ring 53 until the inclined plate 52 abuts against the top of the moving ring 53. Then the return spring 10 will drive the movable column 51 and the inclined plate 52 to move again in the direction close to the rotating shaft 3, so that more areas of the bottom of the inclined plate 52 can abut against the top of the moving ring 53, which can better ensure that the moving ring 53 no longer moves upward, and the end of the moving rod 13 moves relative to the through hole 202.

[0024] See also Figure 7 and Figure 8As shown, in this embodiment, preferably, a positioning plate 15 is fixedly provided on the inner wall of the moving cylinder 7, and a moving plate 16 is fixedly provided on the outer side of the movable column 51, and the moving plate 16 is movably pressed against the positioning plate 15; in the initial state, the positioning plate 15 is in contact with the moving plate 16, and the movable column 51 moves toward the side close to the fixed plate 8 under the action of the moving ring 53, which will drive the moving plate 16 to move away from the positioning plate 15. At this time, the movable column 51 will drive the lifting plate 11 to move downward to release the contact with the notch 61. The length of the notch 61 is much larger than the width of the top of the lifting plate 11. Under the action of the first spring 14, the moving cylinder 7 and the movable column 51 will be driven to move synchronously, and then the return spring 10 will also drive the movable column 51 to move relative to the moving cylinder 7 until the moving plate 16 is in contact with the positioning plate 15 again. At this time, the moving ring 53 and the inclined plate 52 are in contact. When the equipment is inspected and repaired, it is necessary to release the abutment between the sleeve 2 and the rotating shaft 3, and pull the moving rod 13 outward along the through hole 202. The moving rod 13 will drive the moving cylinder 7, the fixed plate 8, the connecting plate 12, the lifting plate 11 and the movable column 51 to move synchronously. The pulling distance of the moving rod 13 must be greater than the distance driven by the first spring 14 to move the moving cylinder 7, so that the lifting plate 11 moves to the other side of the groove 61. At this time, the inclined plate 52 is no longer in contact with the moving ring 53. The rotating cylinder 41 is rotated in the opposite direction to achieve the upward movement of the rotating cylinder 41 and the table 44 to release the abutment against the positioning plate 15, so that the sleeve 2 and the rotating shaft 3 are released from the limit, and then the force applied to the moving rod 13 is released. The first spring 14 will drive the moving cylinder 7 and the movable column 51 to move synchronously until the lifting plate 11 moves to the other side of the groove 201 and abuts. At this time, the position state of the moving cylinder 7 and the movable column 51 is restored to the initial state.

[0025] See also Figure 2-Figure 3 and Fig. 9 As shown, in this embodiment, preferably, a horizontal plate 17 is fixedly arranged above the groove 201, and the horizontal plate 17 is fixedly connected to the sleeve 2, and vertical rods 18 are axially symmetrically fixedly arranged on both sides of the horizontal plate 17, and a rotating plate 19 is movably sleeved on the outer side of the vertical rod 18, and one side of the rotating plate 19 is movably abutted with the outer side of the rotating cylinder 41, and a second spring 20 is fixedly connected between the two rotating plates 19 away from the rotating cylinder 41. When the second spring 20 is in a normal telescopic state, one end of the two rotating plates 19 is abutted with the outer side of the rotating cylinder 41, which can further prevent the rotating cylinder 41 from axially rotating. When it is necessary to release the abutment between the rotating plates 19 and the rotating cylinder 41, the ends of the two rotating plates 19 away from the rotating cylinder 41 are brought closer to each other, which will cause the other end of the rotating plate 19 to rotate around the vertical rod 18, thereby releasing the abutment with the rotating cylinder 41. At this time, the rotating cylinder 41 can be rotated to release the abutment state between the sleeve 2 and the rotating shaft 3.

[0026] See also Figure 9-10As shown, in the present embodiment, preferably, a transverse groove 171 is provided at the center of the transverse plate 17, a screw rod 21 is rotatably arranged in the transverse groove 171, and the threads on both sides of the screw rod 21 rotate in opposite directions, and push rods 22 are axially symmetrically connected to both sides of the screw rod 21, and the push rods 22 are slidingly connected to the transverse groove 171, and the push rods 22 are movably abutted against the rotating plate 19; in the initial state, the second spring 20 is in a compressed state, and at this time, the screw rod 21 is rotated, and the rotation of the screw rod 21 will drive the push rods 22 on both sides to move away from each other along the transverse groove 171, so that the second spring 20 recovers and thereby drives the other side of the rotating rod to rotate and abut against the rotating cylinder 41 to prevent the rotating cylinder 41 from rotating.

[0027] See also Figure 9-10 As shown, in the present embodiment, preferably, a gear 23 is fixedly sleeved on the outer side of the center of the screw rod 21, and a rack 24 is fixedly arranged on the outer side of the moving cylinder 7, and the gear 23 is meshed with the rack 24 for transmission; when the moving cylinder 7 moves toward the rotating cylinder 41 under the action of the first spring 14, the rack 24 will drive the gear 23 to rotate, and the rotation of the gear 23 will drive the screw rod 21 to rotate so that the push rods 22 move away from each other, and will drive the rotating rod to form a clamping abutment with the rotating cylinder 41, and the movement of the moving cylinder 7 and the movable column 51 drives the inclined plate 52 to abut and limit the moving ring 53, thereby further ensuring the stability of the abutment between the sleeve 2 and the rotating shaft 3.

[0028] The working principle of the present invention is: one side of the impeller 1 is rotatably connected to the internal components of the air conditioner and other equipment, the sleeve 2 is sleeved on the outside of the rotating shaft 3, and the rotating cylinder 41 is rotated. While the rotating cylinder 41 rotates, it will move downward along the sleeve 2, thereby driving the table 44 to move downward. The downward movement of the table 44 will abut against the outer side of the limit plate 43, thereby driving multiple limit plates 43 to move in the direction close to the rotating shaft 3 until the inner side of the limit plate 43 abuts against the outer wall of the rotating shaft 3. In this way, the rotating shaft 3 and the limit plate 43 abut together, and the rotation of the rotating shaft 3 will drive the limit plate 43, the ring 42 and the sleeve 2 to rotate synchronously together, and the rotating cylinder 41 will rotate and move downward to drive the moving ring 53 to move downward and abut against the inclined plate 52 The movable column 51 is driven to move along the movable cylinder 7 and the fixed cylinder 6 arranged in the groove 201 in the direction away from the rotating shaft 3. In the initial state, the positioning plate 15 is in contact with the movable plate 16. The movable column 51 moves toward the side close to the fixed plate 8 under the action of the movable ring 53, which will drive the movable plate 16 to move away from the positioning plate 15. At this time, the movable column 51 will drive the lifting plate 11 to move downward to release the contact with the notch 61. The length of the notch 61 is much larger than the width of the top of the lifting plate 11. Under the action of the first spring 14, the movable cylinder 7 and the movable column 51 will be driven to move synchronously. Then the return spring 10 will also drive the movable column 51 to move relative to the movable cylinder 7 until the movable plate 16 is lifted up. The moving ring 53 is in contact with the positioning plate 15 at the same time. At this time, the moving ring 53 and the inclined plate 52 are in contact with each other. When the equipment needs to be repaired, the sleeve 2 needs to be released from the contact with the rotating shaft 3. The moving rod 13 is pulled outward along the through hole 202. The moving rod 13 will drive the moving cylinder 7, the fixed plate 8, the connecting plate 12, the lifting plate 11 and the movable column 51 to move synchronously. The pulling distance of the moving rod 13 is greater than the distance that the first spring 14 drives the moving cylinder 7 to move, so that the lifting plate 11 moves to the other side of the notch 61. At this time, the inclined plate 52 is no longer in contact with the moving ring 53. The rotating cylinder 41 is rotated in the opposite direction to realize the upward movement of the rotating cylinder 41 and the round table 44 to release the contact with the limit plate 43, so that the sleeve 2 and the rotating shaft 3 can be released. The first spring 14 drives the movable cylinder 7 and the movable column 51 to move synchronously until the lifting plate 11 moves to the other side of the groove 201 and abuts against it. At this time, the position state of the movable cylinder 7 and the movable column 51 is restored to the initial state. At the same time, the movable cylinder 7 moves toward the rotating cylinder 41 under the action of the first spring 14, which will cause the rack 24 to drive the gear 23 to rotate. The rotation of the gear 23 will drive the screw rod 21 to rotate so that the push rod 22 moves away from each other. The second spring 20 is restored to its state, thereby driving the other side of the rotating rod to rotate and abut against the rotating cylinder 41 to prevent the rotating cylinder 41 from rotating, thereby further ensuring the stability of the abutment between the sleeve 2 and the rotating shaft 3.

Claims

1. A crossflow fan blade that can be quickly installed, comprising an impeller (1), characterized in that: A sleeve (2) is fixedly arranged on one side of the impeller (1), a rotating shaft (3) is movably arranged in the sleeve (2), a limiting component (4) for clamping the rotating shaft (3) is arranged in the sleeve (2), grooves (201) are axially symmetrically provided on both sides of the sleeve (2), and a positioning component (5) for positioning the limiting component (4) is arranged in the groove (201).

2. A crossflow fan blade that can be quickly installed according to claim 1, characterized in that: The limiting assembly (4) comprises a rotating cylinder (41), the rotating cylinder (41) being threadedly adapted to be connected to the opening of the sleeve (2), a circular ring (42) being fixedly arranged inside the sleeve (2), a plurality of limiting plates (43) being arranged in a circular array outside the circular ring (42), the limiting plates (43) being made of elastic material, the limiting plates (43) being movably abutted against the rotating shaft (3), the bottom of the rotating cylinder (41) being located on the sleeve (2) and a round table (44) being fixedly arranged at the end, the inner wall of the round table (44) being movably abutted against the outer side of the limiting plate (43).

3. A crossflow fan blade that can be quickly installed according to claim 2, characterized in that: The positioning assembly (5) comprises a movable column (51), a slanted plate (52) is fixedly arranged on one side of the movable column (51), a movable ring (53) is fixedly arranged on the outer side of the rotating cylinder (41), the movable ring (53) is movably abutted against the slanted plate (52), a fixed cylinder (6) is transversely fixedly arranged in the groove (201), a movable cylinder (7) is movably arranged in the fixed cylinder (6), the movable column (51) is movably arranged in the movable cylinder (7), a fixed plate (8) is fixedly arranged on the side of the movable cylinder (7) away from the movable column (51), a circular plate (9) is fixedly arranged on the side of the movable column (51) away from the slanted plate (52), the circular plate (9) is slidably connected to the movable cylinder (7), and a return spring (10) is fixedly arranged between the circular plate (9) and the fixed plate (8).

4. A crossflow fan blade that can be quickly installed according to claim 3, characterized in that: The fixed cylinder (6) is provided with a notch (61) on the outside, a lifting plate (11) is movably abutted in the notch (61), the lifting plate (11) is movably arranged in the movable cylinder (7), a connecting plate (12) is fixedly connected between the lifting plate (11) and the fixed plate (8), the connecting plate (12) is made of elastic material, the lifting plate (11) is provided with a square groove (111), the circular plate (9) movably passes through the square groove (111) and movably abuts against one side of the lifting plate (11).

5. A crossflow fan blade that can be quickly installed according to claim 4, characterized in that: The movable column (51) is provided with an inclined groove (511) on one side close to the lifting plate (11); the movable column (51) movably passes through the square groove (111) and the inclined groove (511) movably abuts against the lifting plate (11).

6. A crossflow fan blade that can be quickly installed according to claim 3, characterized in that: The sleeve (2) is located in the groove (201) and is provided with a through hole (202); a moving rod (13) is fixedly provided at one end of the moving cylinder (7) away from the inclined plate (52); the moving rod (13) movably passes through the fixed cylinder (6) and is slidably connected to the through hole (202); a first spring (14) is fixedly connected between the end of the moving cylinder (7) and the inner wall of the fixed cylinder (6); and the moving rod (13) is movably provided in the middle of the first spring (14).

7. A rapidly installable crossflow fan blade according to claim 6, characterized in that: A positioning plate (15) is fixedly provided on the inner wall of the movable cylinder (7), and a movable plate (16) is fixedly provided on the outer side of the movable column (51), and the movable plate (16) is movably pressed against the positioning plate (15).

8. A crossflow fan blade that can be quickly installed according to claim 2, characterized in that: A horizontal plate (17) is fixedly arranged above the groove (201), and the horizontal plate (17) is fixedly connected to the sleeve (2). Vertical rods (18) are axially symmetrically fixedly arranged on both sides of the horizontal plate (17), and a rotating plate (19) is movably sleeved on the outer side of the vertical rod (18). One side of the rotating plate (19) is movably abutted against the outer side of the rotating cylinder (41), and a second spring (20) is fixedly connected between the two rotating plates (19) away from the rotating cylinder (41).

9. A quickly installable crossflow fan blade according to claim 8, characterized in that: A transverse groove (171) is provided at the center of the transverse plate (17), a screw rod (21) is rotatably arranged in the transverse groove (171), and the threads on both sides of the screw rod (21) are rotated in opposite directions, push rods (22) are axially symmetrically connected to the two sides of the screw rod (21), the push rods (22) are slidably connected to the transverse groove (171), and the push rods (22) are movably abutted against the rotating plate (19).

10. A quickly installable cross-flow fan blade according to claim 3 or 9, characterized in that: A gear (23) is fixedly sleeved on the outer side of the center of the screw rod (21), and a rack (24) is fixedly arranged on the outer side of the moving cylinder (7), and the gear (23) and the rack (24) are meshed for transmission.

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