Assembled centrifugal impeller with replaceable blades and integrated blade forming system thereof

Abstract

The present invention discloses an assembled centrifugal impeller with replaceable blades, comprising an assembled centrifugal impeller structure composed of an annular fan disc, a shaft sleeve and integrated centrifugal blades; the integrated centrifugal blades comprise an annular ring, a plurality of fan blade skeleton strips and a centrifugal fan blade, the outer ring of the annular ring is in a circumferential array and is integrally connected to a plurality of fan blade skeleton strips extending in a radial direction, and one side edge of each fan blade skeleton strip is integrally bent and connected to a centrifugal fan blade; the integrated centrifugal blades of suitable sizes are replaced and rotated according to the demand for air volume, and at the same time, the integrated centrifugal blades, the annular fan disc and the shaft sleeve can be individually mass-produced to improve the overall production efficiency.

Description

Technical Field

[0001] The invention belongs to the field of centrifugal impellers. Background Art

[0002] A general steel plate fan is composed of a wind collector, fan blades, a web, an axial hole, a boss, a rivet hole, a balancing sheet, etc. It has a complex structure and processing and requires a lot of welding, resulting in high fan processing costs and a long cycle. All welding is done manually, so the reliability is poor and it cannot be manufactured quickly in large quantities. When trial-producing high-performance motors, the heat dissipation of the motor needs to be adjusted and tested frequently. Repeatedly manufacturing new fans wastes time and materials and requires a lot of cost. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides an assembled centrifugal impeller with replaceable blades and an integrated blade molding system thereof, wherein the same annular wind disk can be adapted to integrated centrifugal blades of various sizes.

[0004] Technical solution: To achieve the above-mentioned purpose, the present invention provides an assembled centrifugal impeller with replaceable blades, comprising an assembled centrifugal impeller structure composed of an annular wind disk, a shaft sleeve and integrated centrifugal blades;

[0005] The integrated centrifugal blade comprises a ring, a plurality of blade skeleton strips and a centrifugal blade. The outer ring of the ring is in a circumferential array and is integrally connected to a plurality of blade skeleton strips extending in a radial direction. One side edge of each blade skeleton strip is integrally bent and connected to a centrifugal blade.

[0006] The ring is coaxially sleeved outside the shaft sleeve; and each fan blade skeleton strip fits the annular fan disk surface.

[0007] Furthermore, each fan blade skeleton bar is hollowed out with a lock hole a along the length direction, and a number of b lock holes are distributed in a circular array on the ring; a number of threaded lock holes are distributed on the disk surface of the annular wind disk, and each a lock hole and b lock hole are aligned with corresponding threaded lock holes and are locked and connected by locking bolts.

[0008] Furthermore, the shaft sleeve and the inner edge of the ring body of the annular wind disk are fixedly connected coaxially through flange bolts.

[0009] An integrated blade molding system for an assembled centrifugal impeller with replaceable blades:

[0010] It includes an automatic fan blade folding device and an integrated blade blank plate to be folded which is cut from a circular steel plate;

[0011] The integrated blade blank plate to be folded comprises a ring, the outer ring of which is in a circumferential array and integrally connected with a plurality of blade skeleton strips extending in a radial direction, each blade skeleton strip is cut with a hollow a keyhole, and the ring is cut with a plurality of hollow b keyholes; one side edge of each blade skeleton strip is integrally connected in parallel with a centrifugal blade to be folded; a virtual dividing line is formed at the connection between the centrifugal blade to be folded and the blade skeleton strip to which it is connected;

[0012] The automatic fan blade folding device can fold the centrifugal fan blades to be folded on the integrated blade blank plate along the virtual dividing line one by one, and finally turn the integrated blade blank plate into an integrated centrifugal blade.

[0013] Furthermore, the automatic fan blade folding device includes a disc-shaped folding platform, and a circular protrusion is arranged at the center of the disc-shaped folding platform; the ring of the integral blade blank plate to be folded can be coaxially sleeved outside the circular protrusion;

[0014] A fixed shaft coaxial with the circular protrusion is arranged above the disc-shaped folding platform, an external thread column is coaxially fixedly connected to the lower end of the fixed shaft, and the external thread column is coaxially threaded with an internal thread rotating disk;

[0015] One side of the internal thread rotating disk is fixedly connected to a vertical pressure plate through a connecting arm; one side surface of the disc-shaped folding platform is provided with a fan-shaped sinking groove in a top view, and a lifter is installed in the sinking groove, and the lifting part of the lifter is connected to a top tongue with an arc top at the upper end.

[0016] Furthermore, in a top-down perspective, when the internally threaded rotating disk rotates clockwise, the internally threaded rotating disk performs a spiral downward motion under the threaded cooperation of the externally threaded column.

[0017] Furthermore, a rotating ring is arranged outside the fixed shaft so as to rotate coaxially through a bearing, and transmission gear bodies are distributed in a circular array on the outer circumference of the rotating disk; the output end of the driving motor is driven and connected with an output gear, and the output gear is meshed with the transmission gear body; at least one guide rod extending downward is arranged on the lower side of the rotating ring, and the lower end of the guide rod can move through a vertical guide hole at an eccentric position of the internally threaded rotating disk, so that the internally threaded rotating disk can rotate synchronously with the rotating ring under the action of the guide rod.

[0018] Furthermore, the sinking groove forms an edge line a and an edge line b along the radial direction on the surface of the disc-shaped folding platform;

[0019] The ring of the integrated blade blank to be folded is coaxially sleeved outside the circular protrusion, and the virtual dividing line of a centrifugal fan blade to be folded on the integrated blade blank to be folded just coincides with the edge line a in a top view; under the threaded transmission of the internal thread rotating disk and the external thread column, when the distance between the lower end of the baffle plate and the upper surface of the disc-shaped folding platform is just consistent with the plate thickness of the integrated blade blank to be folded, the strip surface of the lower end of the baffle plate just presses a fan blade skeleton strip at the position of the edge line a along the length direction; on this basis, the top tongue pushes up the top to be folded The centrifugal fan blades are folded upward along the virtual dividing line until the centrifugal fan blades that are folded upward are sandwiched between the side wall of the top tongue and the side wall of the pressure plate; on this basis, after the top tongue is retracted downward to below the upper surface of the disc-shaped folding platform, from a top-down perspective, when the internal thread rotating disk rotates counterclockwise, the internal thread rotating disk drives the pressure plate to push the centrifugal fan blade that has been folded upward in a counterclockwise direction, so that the integral blade blank to be folded is deflected counterclockwise around the axis of the circular protrusion. At the same time, with the cooperation of the thread, the lower end strip surface of the pressure plate is upwardly separated from the fan blade frame strip that was originally pressed, and a gap of a certain height is formed.

[0020] Beneficial effects: The characteristic of the assembled centrifugal impeller is that the same annular fan disk can be adapted to integrated centrifugal blades of various sizes, unlike the existing centrifugal fan wheel structure, which has a large number of welding, resulting in high fan processing costs and long cycles. It is all manual welding, so the reliability is poor and it cannot be manufactured quickly in large quantities;

[0021] The integrated centrifugal blades of appropriate size can be replaced and rotated according to the demand for air volume. At the same time, the integrated centrifugal blades, annular fan disc and shaft sleeve can be mass-produced separately to improve the overall production efficiency;

[0022] The core automatic fan blade folding device of this case realizes folding each centrifugal fan blade to be folded on the integrated blade blank plate along the virtual dividing line one by one, and finally turns the integrated blade blank plate into an integrated centrifugal blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Attached Figure 1 It is a schematic diagram of the one-piece blade forming process;

[0024] Attached Figure 2 It is the assembled centrifugal impeller assembly structure of this case;

[0025] Attached Figure 3 A schematic diagram of adapting integrated centrifugal blades of different sizes to the same annular fan disk;

[0026] Attached Figure 4 This is an overall schematic diagram of the automatic fan blade folding device;

[0027] Attached Figure 5It is a process schematic diagram of "step one" to "step four" in the working process of the automatic fan blade folding device;

[0028] Attached Figure 6 It is a schematic diagram for comparing the before and after of the upward thrusting action of the tongue in the process of "step three";

[0029] Attached Figure 7 For attachment Figure 5 An enlarged schematic diagram of the mark 30;

[0030] Attached Figure 8 For attachment Figure 5 An enlarged schematic diagram of the mark 32;

[0031] Attached Fig. 9 For attachment Figure 5 An enlarged schematic diagram of the area marked 31 in FIG. DETAILED DESCRIPTION

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] As attached Figures 1 to 9 The assembled centrifugal impeller with replaceable blades shown in the figure includes an assembled centrifugal impeller structure composed of a mutually detachable annular wind disk 40, a shaft sleeve 42 and an integrated centrifugal blade 29; the shaft sleeve 42 and the inner edge of the ring body of the annular wind disk 40 are coaxially fixedly connected by flange bolts 50.

[0034] like Figure 1 The integrated centrifugal blade 29 includes a ring 24, a plurality of blade skeleton strips 27 and a centrifugal blade 26. The outer ring of the ring 24 is in a circumferential array and is integrally connected to a plurality of blade skeleton strips 27 extending in the radial direction. One side edge of each blade skeleton strip 27 is integrally bent and connected to a centrifugal blade 26.

[0035] like Figure 2 The ring 24 is coaxially sleeved outside the shaft sleeve 42, and each fan blade skeleton strip 27 is tightly fitted to the disk surface of the annular wind disk 40; a plurality of threaded locking holes 41 are distributed on the disk surface of the annular wind disk 40, and each fan blade skeleton strip 27 is hollowed out along the length direction to provide a locking hole 28, and a plurality of b locking holes 25 are distributed in a circular array on the ring 24; each a locking hole 28 and b locking hole 25 are aligned with the corresponding threaded locking hole 41, and the number of the threaded locking holes 41 is the same, and they are locked and connected by locking bolts 44.

[0036] The characteristic of the assembled centrifugal impeller is that the same annular fan disc 40 can be adapted to the integrated centrifugal blades 29 of various sizes, such as Figure 3As shown, the integrated centrifugal blades 29 of appropriate size can be replaced and rotated according to the demand for air volume. At the same time, the integrated centrifugal blades 29, the annular wind disc 40 and the shaft sleeve 42 can be mass-produced separately to improve the overall production efficiency.

[0037] The overall process of producing integrated centrifugal blades:

[0038] like Figure 1 As shown, the laser cutting device cuts a circular steel plate 22 into an integral blade blank plate 23 to be folded;

[0039] The formed integrated blade blank plate 23 to be folded includes a ring 24, the outer ring of the ring 24 is in a circumferential array and is integrally connected to a plurality of blade skeleton strips 27 extending in the radial direction, each blade skeleton strip 27 is cut with a hollow a lock hole 28, and the ring 24 is cut with a plurality of hollow b lock holes 25;

[0040] One side edge of each fan blade frame strip 27 is integrally connected in parallel with a centrifugal fan blade 26 to be folded; a virtual dividing line 33 is formed at the connection between the centrifugal fan blade 26 to be folded and the fan blade frame strip 27 to which it is connected;

[0041] The automatic fan blade folding device 60 folds the centrifugal fan blades 26 to be folded on the integrated blade blank plate 23 along the virtual dividing line 33 one by one, and finally transforms the integrated blade blank plate 23 into an integrated centrifugal blade 29 .

[0042] The specific structure and working principle of the automatic fan blade folding device 60 are as follows:

[0043] like Figures 4 to 9 As shown, the automatic fan blade folding device 60 includes a disc-shaped folding platform 14, and a circular protrusion 16 is arranged at the center of the disc-shaped folding platform 14; the ring 24 of the integral blade blank plate 23 to be folded can be coaxially sleeved outside the circular protrusion 16;

[0044] A fixed beam 3 is arranged above the disc-shaped folding platform 14, a fixed shaft 21 coaxial with the circular protrusion 16 is fixedly connected to the lower side of the fixed beam 3, an external thread column 7 is coaxially fixedly connected to the lower end of the fixed shaft 21, and the external thread column 7 is coaxially threaded with an internal thread rotating disk 17;

[0045] In a top view, when the internal thread rotating disk 17 rotates clockwise, the internal thread rotating disk 17 performs a spiral downward motion under the threaded fit of the external thread column 7;

[0046] One side of the internal thread rotating disk 17 is fixedly connected to a vertical pressure baffle plate 8 via a connecting arm 6;

[0047] A fan-shaped sinking groove 12 is provided on one side surface of the disc-shaped folding platform 14 in a top view, and the sinking groove 12 forms an edge line a 9 and an edge line b 14 along the radial direction on the surface of the disc-shaped folding platform 14; a smooth chamfer is provided at the edge line b 14;

[0048] A lifter 13 is installed in the sinking tank 12, and a lifting part of the lifter 13 is connected to a top tongue 11 with a circular top 10 at the upper end;

[0049] A slewing ring 18 is arranged outside the fixed shaft 21 through the bearing 20 to rotate coaxially, and transmission gear bodies 19 are distributed in a circumferential array on the outer circumference of the slewing disk 18; a driving motor 4 is fixedly arranged on the fixed beam 3, and an output end of the driving motor 4 is drivingly connected to an output gear 5, and the output gear 54 is meshed with the transmission gear body 19; at least one guide rod 1 extending downward is arranged on the lower side of the slewing ring 18, and the lower end of the guide rod 1 can move through the vertical guide hole 2 at the eccentric position of the internal thread rotating disk 17, so that the internal thread rotating disk 17 rotates synchronously with the slewing ring 18 under the action of the guide rod 1;

[0050] The ring 24 of the integrated blade blank plate 23 to be folded is coaxially sleeved outside the circular protrusion 16, and the virtual dividing line 33 of a centrifugal fan blade 26 to be folded on the integrated blade blank plate 23 just coincides with the a-angle line 9 in a top view; under the threaded transmission of the internal thread rotating disk 17 and the external thread column 7, when the distance between the lower end of the pressure plate 8 and the upper surface of the disc-shaped folding platform 14 is just consistent with the plate thickness of the integrated blade blank plate 23 to be folded, the lower end strip surface of the pressure plate 8 just presses a fan blade skeleton strip 27 at the position of the a-angle line 9 along the length direction; on this basis, the top tongue 11 pushes up, and the top tongue 11 pushes the upper to-be-folded The centrifugal fan blades 26 are folded upward along the virtual dividing line 33 until the upwardly folded centrifugal fan blades 26 are sandwiched between the side wall surface of the top tongue 11 and the side wall surface of the pressure plate 8; on this basis, after the top tongue 11 is retracted downward to below the upper surface of the disc-shaped folding platform 14, in a top-down perspective, when the internal thread rotating disk 17 rotates counterclockwise, the internal thread rotating disk 17 drives the pressure plate 8 to push the upwardly folded centrifugal fan blade 26 in a counterclockwise direction, so that the integral blade blank plate 23 to be folded is deflected counterclockwise around the axis of the circular protrusion 16. At the same time, with the cooperation of the thread, the lower end strip surface of the pressure plate 8 is upwardly separated from the originally pressed fan frame strip 27, and a gap 33 of a certain height is formed.

[0051] The working principle of the automatic fan blade folding device 60 (such as Figure 5 ):

[0052] Step 1: In the initial state, the lower end of the pressure plate 8 is higher than the height of the upper end of the circular protrusion 16; then the ring 24 of the integrated blade blank plate 23 to be folded is coaxially sleeved outside the circular protrusion 16, and the upper surface of the disc-shaped folding platform 14 is in contact with the lower surface of the integrated blade blank plate 23 to be folded; and the virtual dividing line 33 of the first centrifugal fan blade 26 to be folded on the integrated blade blank plate 23 to be folded coincides with the a-angle line 9 in a top view, and the first centrifugal fan blade 26 to be folded is just above the top tongue 11;

[0053] Step 2: The internal thread rotating disk 17 is finally driven by the driving motor 4 to rotate clockwise around the axis in a top-down perspective. Under the thread transmission of the internal thread rotating disk 17 and the external thread column 7, the internal thread rotating disk 17 gradually descends, so that the pressure plate 8 rotates synchronously with the internal thread rotating disk 17 and gradually descends. When the distance between the lower end of the pressure plate 8 and the upper surface of the disc-shaped folding platform 14 is just consistent with the plate thickness of the integral blade blank plate 23 to be folded, the lower end strip surface of the pressure plate 8 just presses a fan blade frame strip 27 at the position of the a edge line 9 along the length direction, thereby avoiding the root of the fan blade frame strip 27 from bending and deformation in the next step;

[0054] Step 3: Control the lifter 13 to make the top tongue 11 move upward, and the top tongue 11 folds the centrifugal fan blade 26 to be folded above the sinking groove 12 upward along the virtual dividing line 33 until the centrifugal fan blade 26 folded upward is clamped between the side wall surface of the top tongue 11 and the side wall surface of the pressure plate 8; on this basis, after the top tongue 11 is retracted downward to below the upper surface of the disc-shaped folding platform 14, the first centrifugal fan blade 26 completes the folding process;

[0055] Step 4: in a top-down perspective, the internal thread rotating disk 17 is finally driven by the driving motor 4 to rotate counterclockwise, and the internal thread rotating disk 17 and the pressure plate 8 push the centrifugal fan blade 26 that has been folded upward in a counterclockwise direction, so that the integral blade blank plate 23 to be folded is deflected counterclockwise around the axis of the circular protrusion 16 as a whole, until the virtual dividing line 33 of the second centrifugal fan blade 26 to be folded coincides with the a-angle line 9 in a top-down perspective, and the second centrifugal fan blade 26 to be folded is just above the top tongue 11;

[0056] At the same time, the pressure plate 8 pushes the centrifugal fan blade 26 that has been folded upward in the counterclockwise direction, so that the integrated blade blank plate 23 to be folded is deflected counterclockwise around the axis of the circular protrusion 16. Under the cooperation of the thread, the lower end strip surface of the pressure plate 8 is upwardly separated from the fan blade frame strip 27 that was originally pressed, and a gap 90 of a certain height is formed. The existence of the gap 90 is conducive to the smooth implementation of the next step.

[0057] Step 5: The internal thread rotating disk 17 is finally driven by the driving motor 4 to rotate clockwise around the axis in a top-down perspective. Under the thread transmission of the internal thread rotating disk 17 and the external thread column 7, the pressure plate 8 rotates synchronously with the internal thread rotating disk 17 and gradually descends. When the distance between the lower end of the pressure plate 8 and the upper surface of the disc-shaped folding platform 14 is just consistent with the thickness of the blank plate 23 of the integrated blade to be folded, the strip surface of the lower end of the pressure plate 8 just presses a blade skeleton strip 27 connected to the second centrifugal fan blade 26 to be folded along the length direction, and the gap 90 just disappears at this time.

[0058] At this time, it is equivalent to returning to the moment when "step 2" ends, and then referring to the process of "step 3", the second centrifugal fan blade 26 is completed to complete the folding process;

[0059] According to the above rule, the centrifugal fan blades 26 to be folded on the integrated blade blank plate 23 are folded one by one along the virtual dividing line 33 , and finally the integrated blade blank plate 23 to be folded is transformed into an integrated centrifugal blade 29 .

[0060] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An integrated blade molding system for an assembled centrifugal impeller with replaceable blades, characterized in that: The centrifugal impeller comprises an assembled centrifugal impeller structure composed of an annular fan disk (40), a shaft sleeve (42) and an integrated centrifugal blade (29); The integrated centrifugal blade (29) comprises a ring (24), a plurality of blade skeleton strips (27) and a centrifugal blade (26); the outer ring of the ring (24) is in a circumferential array and is integrally connected to a plurality of blade skeleton strips (27) extending in a radial direction; one side edge of each blade skeleton strip (27) is integrally bent and connected to a centrifugal blade (26); The ring (24) is coaxially sleeved outside the shaft sleeve (42); and each fan blade skeleton strip (27) is in close contact with the disk surface of the annular fan disk (40); The integrated blade forming system comprises an automatic blade folding device (60) and an integrated blade blank plate (23) to be folded which is cut from a circular steel plate (22); The integral blade blank plate (23) to be folded comprises a ring (24), the outer ring of the ring (24) is in a circumferential array and is integrally connected to a plurality of blade skeleton strips (27) extending in a radial direction, each blade skeleton strip (27) is cut with a hollow a lock hole (28), and the ring (24) is cut with a plurality of hollow b lock holes (25); one side edge of each blade skeleton strip (27) is integrally connected in parallel with a centrifugal blade (26) to be folded; a virtual dividing line (33) is formed at the connection between the centrifugal blade (26) to be folded and the blade skeleton strip (27) to which it is connected; The automatic fan blade folding device (60) can fold the centrifugal fan blades (26) to be folded on the integrated blade blank plate (23) one by one along the virtual dividing line (33), and finally transform the integrated blade blank plate (23) into an integrated centrifugal blade (29); The automatic fan blade folding device (60) comprises a disc-shaped folding platform (14), wherein a circular protrusion (16) is arranged at the center of the disc-shaped folding platform (14); a ring (24) of the integral blade blank plate (23) to be folded can be coaxially sleeved outside the circular protrusion (16); A fixed shaft (21) coaxial with the circular protrusion (16) is arranged above the disc-shaped folding platform (14); an external threaded column (7) is coaxially fixedly connected to the lower end of the fixed shaft (21); and the external threaded column (7) is coaxially threaded with an internal threaded rotating disk (17); One side of the internal thread rotating disk (17) is fixedly connected to a vertical pressure plate (8) via a connecting arm (6); one side surface of the disc-shaped folding platform (14) is provided with a sinking groove (12) which is fan-shaped when viewed from above, and a lifter (13) is installed in the sinking groove (12); the lifting part of the lifter (13) is connected to a top tongue (11) whose upper end is a circular arc top (10); When the internal thread rotating disk (17) rotates clockwise in a top-down view, the internal thread rotating disk (17) performs a spiral downward motion under the screw fit of the external thread column (7); A slewing ring (18) is arranged outside the fixed shaft (21) through a bearing (20) to rotate coaxially, and transmission gear bodies (19) are distributed in a circumferential array on the outer circumference of the slewing ring (18); an output gear (5) is drivingly connected to the output end of the driving motor (4), and the output gear (5) is meshed with the transmission gear body (19); at least one guide rod (1) extending downward is arranged on the lower side of the slewing ring (18), and the lower end of the guide rod (1) is movable through a vertical guide hole (2) at an eccentric position of the internally threaded rotating disk (17), so that the internally threaded rotating disk (17) rotates synchronously with the slewing ring (18) under the action of the guide rod (1).

2. The integrated blade molding system of the assembled centrifugal impeller with replaceable blades according to claim 1, characterized in that: The sinking groove (12) forms an edge line a (9) and an edge line b along the radial direction on the surface of the disc-shaped folding platform (14); The ring (24) of the integrated blade blank plate (23) to be folded is coaxially sleeved outside the circular protrusion (16), and a virtual dividing line (33) of the centrifugal fan blade (26) to be folded on the integrated blade blank plate (23) just coincides with the a-edge line (9) in a top view; under the threaded transmission of the internal thread rotating disk (17) and the external thread column (7), when the distance between the lower end of the pressure plate (8) and the upper surface of the disc-shaped folding platform (14) is just consistent with the plate thickness of the integrated blade blank plate (23), the strip surface of the lower end of the pressure plate (8) just presses a fan blade skeleton strip (27) at the position of the a-edge line (9) along the length direction; on this basis, the top tongue (11) pushes up the top of the to-be-folded blade. The centrifugal fan blade (26) is folded upward along the virtual dividing line (33) until the centrifugal fan blade (26) folded upward is sandwiched between the side wall surface of the top tongue (11) and the side wall surface of the pressure plate (8); on this basis, after the top tongue (11) is retracted downward to below the upper surface of the disc-shaped folding platform (14), when the internal thread rotating disk (17) rotates counterclockwise from a top view, the internal thread rotating disk (17) drives the pressure plate (8) to push the centrifugal fan blade (26) that has been folded upward in a counterclockwise direction, so that the integral blade blank plate (23) to be folded is deflected counterclockwise around the axis of the circular protrusion (16). At the same time, with the cooperation of the thread, the lower end strip surface of the pressure plate (8) is separated from the fan blade frame strip (27) that was originally pressed upward, and a gap (90) of a certain height is formed.

3. The integrated blade molding system of an assembled centrifugal impeller with replaceable blades according to claim 1, characterized in that: Each fan blade skeleton strip (27) is hollowed out along the length direction to form an a-locking hole (28), and the ring (24) is provided with a plurality of b-locking holes (25) distributed in a circular array; the disk surface of the annular fan disk (40) is provided with a plurality of threaded locking holes (41), and each a-locking hole (28) and b-locking hole (25) is aligned with a corresponding threaded locking hole (41), and is locked and connected by a locking bolt (44).

4. The integrated blade molding system of an assembled centrifugal impeller with replaceable blades according to claim 3, characterized in that: The shaft sleeve (42) and the inner edge of the ring body of the annular wind disk (40) are coaxially fixedly connected via flange bolts (50).

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