Disassembling and assembling device for centrifugal fan impeller

Abstract

The utility model discloses a disassembling and assembling device for a centrifugal fan impeller. The disassembling and assembling device comprises a fixing support, a supporting plate, a lifting assembly, a clamping assembly and an adjusting assembly. The supporting plate is arranged on the fixed bracket; the lifting assembly comprises a lifting plate, two spiral lifters and a sliding part, the lifting plate is slidably arranged on the fixed support through the sliding part, and the two spiral lifters are both connected with the bottom of the lifting plate; the clamping assembly comprises an upper clamp and a lower clamp, the lower clamp is arranged on the lifting plate, and the upper clamp is connected with the lower clamp; the adjusting assembly is arranged on the lifting plate and connected with the lower clamp. During mounting and dismounting, an operator firstly clamps the impeller through the upper clamp and the lower clamp, and then adjusts the vertical position and the horizontal position of the impeller of the centrifugal fan through the lifting assembly and the adjusting assembly, so that the impeller can be mounted on the centrifugal fan or dismounted from the centrifugal fan; the impeller can be stably and quickly mounted or dismounted, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of cigarette machinery and equipment technology, and more specifically, to a disassembly and assembly device for a centrifugal fan impeller. Background Technology

[0002] During cigarette production, a large amount of dust is generated, and the machinery and equipment generate a lot of heat. Centrifugal fans use powerful airflow to draw this dust into the system and process it, preventing dust from accumulating in the workshop, reducing pollution to equipment and products, and also helping to lower the workshop temperature, ensuring the normal operation of production equipment, and preventing equipment failure and production safety issues caused by high temperatures.

[0003] However, when installing and disassembling the impeller of a centrifugal fan, it is difficult to hold the impeller in place due to its weight, limited space, and large size. Manual installation and disassembly are time-consuming, labor-intensive, and can easily injure operators.

[0004] Therefore, how to provide a disassembly and assembly device for centrifugal fan impellers has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] One objective of this invention is to provide a new technical solution for a centrifugal fan impeller disassembly and assembly device.

[0006] According to a first aspect of the present invention, a device for disassembling and assembling a centrifugal fan impeller is provided, comprising: a fixed bracket, a support plate, a lifting assembly, a clamping assembly, and an adjusting assembly;

[0007] The support plate is mounted on the fixed bracket;

[0008] The lifting assembly includes a lifting plate, two screw lifts, and a sliding part. The lifting plate is slidably mounted on the fixed bracket via the sliding part. The two screw lifts are respectively located near both ends of the support plate, and both screw lifts are connected to the bottom of the lifting plate to drive the lifting plate to move up and down.

[0009] The clamping assembly includes an upper clamp and a lower clamp. The lower clamp is disposed on the lifting plate, and the upper clamp is connected to the lower clamp. The upper clamp and the lower clamp are used to clamp the impeller of the centrifugal fan.

[0010] The adjustment component is disposed on the lifting plate and connected to the lower clamp, and is used to adjust the horizontal position of the lower clamp.

[0011] Optionally, the upper clamp has a first V-shaped notch at its center, the lower clamp has a second V-shaped notch at its center, and the impeller of the centrifugal fan is located between the first V-shaped notch and the second V-shaped notch.

[0012] Optionally, the clamping assembly further includes a clamping bolt, a first connecting hole, and a second connecting hole. The first connecting hole and the second connecting hole are respectively disposed on both sides of the upper clamp and the lower clamp. The clamping bolt passes through the first connecting hole and is threadedly connected to the second connecting hole.

[0013] Optionally, the lifting assembly further includes a threaded rod and a lifting handwheel, with a first end of the threaded rod connected to the lifting handwheel and a second end of the threaded rod connected to the two screw jacks.

[0014] Optionally, the fixed bracket includes a fixed frame and two support frames, the two support frames being respectively disposed on both sides of the fixed frame and perpendicularly connected to the fixed frame;

[0015] The sliding part includes a slide rail and a slider. The slide rail is respectively disposed on the support frame, and the slider is respectively disposed on both sides of the lifting plate. The slider is provided with a first slide groove, and the slider is connected to the slide rail through the first slide groove.

[0016] Optionally, the support frame is further provided with a lifting scale block, which has scale lines.

[0017] The lifting plate is provided with a protrusion, which is correspondingly provided with the lifting scale block.

[0018] Optionally, the adjustment assembly includes a movable base, a fast adjustment part, and a slow adjustment part. The movable base is slidably disposed on the lifting plate, and the top end of the movable base is connected to the lower clamp. Both the fast adjustment part and the slow adjustment part are connected to the movable base.

[0019] Optionally, the adjustment assembly further includes two first guide rails and a horizontal scale block, the two first guide rails being fixed to the lifting plate, and the horizontal scale block being respectively disposed on the outer side of the two first guide rails;

[0020] The bottom of the mobile base is provided with two first sliding grooves, and the two first guide rails are slidably connected to the two first sliding grooves.

[0021] Optionally, the slow adjustment part includes a fixed plate, a slow adjustment handwheel, a slow adjustment screw, a slow adjustment gearbox, and a connecting rod. The fixed plate is connected to the fast adjustment part, the slow adjustment gearbox is disposed on the fixed plate, the first end of the slow adjustment screw is connected to the slow adjustment handwheel, the second end of the adjustment screw is connected to the slow adjustment gearbox, the first end of the connecting rod is connected to the slow adjustment gearbox, and the second end of the connecting rod is connected to the movable base.

[0022] Optionally, the quick-adjustment unit includes a quick-adjustment handwheel, a quick-adjustment screw, a quick-adjustment gearbox, a connecting block, and two second guide rails. The two second guide rails are spaced apart on the lifting plate. The bottom of the connecting block is slidably connected to the second guide rails through a second sliding groove. The fixing plate is disposed on the top of the connecting block. The quick-adjustment handwheel is connected to the quick-adjustment gearbox. The two ends of the quick-adjustment screw are respectively connected to the quick-adjustment gearbox and the connecting block.

[0023] The beneficial effects of this utility model are as follows:

[0024] This invention allows a lifting plate to be slidably mounted on a fixed bracket via a sliding part. Two screw jacks are respectively positioned near both ends of the support plate and connected to the bottom of the lifting plate. Clamps are mounted on the lifting plate, with the upper clamp connected to the lower clamp. When installing or removing the impeller of a centrifugal fan, the operator first clamps the impeller with the upper and lower clamps. Then, the vertical and horizontal positions of the impeller are adjusted using the lifting and adjusting components to allow the impeller to be installed onto or removed from the centrifugal fan. This enables stable and rapid installation and removal of the impeller, reducing the operator's workload, improving work efficiency, and ensuring the operator's safety.

[0025] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0027] Figure 1 This is a structural diagram of the centrifugal fan impeller disassembly and assembly device of this utility model;

[0028] Figure 2 This is a structural diagram of the adjustment component of this utility model;

[0029] Figure 3 This is a structural diagram of the sliding part of this utility model.

[0030] The diagram shows the following components: 1. Fixed bracket; 11. Fixed frame; 12. Support frame; 13. Lifting scale block; 2. Support plate; 3. Lifting assembly; 31. Lifting plate; 32. Screw jack; 33. Threaded rod; 34. Lifting handwheel; 35. Slide rail; 36. Slider; 37. Protrusion; 4. Clamping assembly; 41. Upper clamp; 42. Lower clamp; 43. Clamping bolt; 5. Adjustment assembly; 51. Moving base; 52. Slow adjustment section; 521. Fixed plate; 522. Slow adjustment handwheel; 523. Slow adjustment screw; 524. Slow adjustment gearbox; 525. Connecting rod; 53. Fast adjustment section; 531. Fast adjustment handwheel; 532. Fast adjustment screw; 533. Fast adjustment gearbox; 534. Second guide rail; 535. Connecting block; 54. First guide rail; 55. Horizontal scale block; 6. Impeller. Detailed Implementation

[0031] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0032] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0033] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0034] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0035] like Figures 1 to 3 As shown in the figure, this utility model embodiment provides a centrifugal fan impeller disassembly and assembly device, including: a fixed bracket 1, a support plate 2, a lifting assembly 3, a clamping assembly 4, and an adjusting assembly 5.

[0036] The support plate 2 is mounted on the fixed bracket 1.

[0037] The lifting assembly 3 includes a lifting plate 31, two screw lifters 32 and a sliding part. The lifting plate 31 is slidably mounted on the fixed bracket 1 through the sliding part. The two screw lifters 32 are respectively located near the two ends of the support plate 2, and both screw lifters 32 are connected to the bottom of the lifting plate 31 to drive the lifting plate 31 to move up and down.

[0038] Specifically, the two screw lifts 32 are spaced apart and are located at both ends of the support plate 2, thereby stably driving the lifting plate 31 to rise and fall.

[0039] The clamping assembly 4 includes an upper clamp 41 and a lower clamp 42. The lower clamp 42 is mounted on the lifting plate 31. The upper clamp 41 is connected to the lower clamp 42. The upper clamp 41 and the lower clamp 42 are used to clamp the impeller 6 of the centrifugal fan.

[0040] The adjustment component 5 is mounted on the lifting plate 31 and connected to the lower clamp 42, and is used to adjust the horizontal position of the lower clamp 42.

[0041] When it is necessary to install the impeller 6 of the centrifugal fan, the operator first clamps the impeller 6 of the centrifugal fan with the upper clamp 41 and the lower clamp 42; then, the lifting plate 31 is moved vertically by the two screw lifters 32 so that the impeller 6 of the centrifugal fan corresponds to the centrifugal fan. Then, the horizontal position of the lower clamp 42 is adjusted by the adjusting component 5 so that the impeller 6 moves to contact the centrifugal fan, and then the impeller 6 is installed on the centrifugal fan.

[0042] When it is necessary to disassemble the impeller 6 of the centrifugal fan, the operator first clamps the impeller 6 of the centrifugal fan with the upper clamp 41 and the lower clamp 42. Then, the horizontal position of the lower clamp 42 is adjusted by the adjusting component 5 so that the impeller 6 is separated from the centrifugal fan. Then, the lifting plate 31 is moved downward by the two screw lifters 32 so that the impeller 6 can be disassembled.

[0043] This invention allows the lifting plate 31 to be slidably mounted on the fixed bracket 1 via a sliding part. Two screw jacks 32 are respectively positioned near both ends of the support plate 2, and both screw jacks 32 are connected to the bottom of the lifting plate 31. A clamp is mounted on the lifting plate 31, with the upper clamp 41 connected to the lower clamp 42. When it is necessary to install or remove the impeller 6 of the centrifugal fan, the operator first clamps the impeller 6 of the centrifugal fan with the upper clamp 41 and the lower clamp 42, and then adjusts the vertical and horizontal positions of the impeller 6 of the centrifugal fan through the lifting assembly 3 and the adjusting assembly 5, so that the impeller 6 can be installed on or removed from the centrifugal fan. This allows the impeller 6 of the centrifugal fan to be installed or removed stably and quickly, reducing the labor intensity of the operator, improving work efficiency, and also ensuring the personal safety of the operator.

[0044] In one embodiment of the centrifugal fan impeller disassembly and assembly device of this utility model, such as Figure 1 and Figure 3As shown, in order to increase the stability of the upper clamp 41 and the lower clamp 42 in clamping the impeller 6 of the centrifugal fan, the upper clamp 41 has a first V-shaped notch at its center, and the lower clamp 42 has a second V-shaped notch at its center. The impeller 6 of the centrifugal fan is located between the first V-shaped notch and the second V-shaped notch.

[0045] In one embodiment of the centrifugal fan impeller disassembly and assembly device of this utility model, the clamping assembly 4 further includes a clamping bolt 43, a first connecting hole and a second connecting hole. The first connecting hole and the second connecting hole are respectively provided on both sides of the upper clamp 41 and the lower clamp 42. The clamping bolt 43 passes through the first connecting hole and is threadedly connected to the second connecting hole.

[0046] Specifically, by tightening or loosening the clamping bolt 43, the upper clamp 41 and the lower clamp 42 clamp and release the impeller 6 of the centrifugal fan, increasing the convenience of installing and removing the impeller 6 of the centrifugal fan.

[0047] In one embodiment of the centrifugal fan impeller disassembly and assembly device of this utility model, such as Figure 1 As shown, the lifting assembly 3 also includes a threaded rod 33 and a lifting handwheel 34. The first end of the threaded rod 33 is connected to the lifting handwheel 34, and the second end of the threaded rod 33 is connected to two screw jacks 32.

[0048] Specifically, the operator rotates the lifting handwheel 34 in the forward or reverse direction to make the threaded rod 33 rotate in the forward or reverse direction, thereby causing the two screw lifters 32 to drive the lifting plate 31 to move upward or downward, thus realizing the lifting and lowering of the impeller 6 of the centrifugal fan.

[0049] In one embodiment of the centrifugal fan impeller disassembly and assembly device of this utility model, such as Figure 1 and 2 As shown, the fixed bracket 1 includes a fixed frame 11 and two support frames 12. The two support frames 12 are respectively arranged on both sides of the fixed frame 11 and are perpendicularly connected to the fixed frame 11.

[0050] The sliding part includes a slide rail 35 and a slider 36. The slide rail 35 is respectively mounted on the support frame 12, and the slider 36 is respectively mounted on both sides of the lifting plate 31. The slider 36 is provided with a first slide groove, and the slider 36 is connected to the slide rail 35 through the first slide groove.

[0051] Specifically, there are multiple slide rails 35 and sliders 36, which can ensure the stability of the movement of the lifting plate 31.

[0052] This utility model arranges two support frames 12 on both sides of a fixed frame 11 and connects the support frames 12 and the fixed frame 11 perpendicularly. Slide rails 35 are arranged on the support frames 12, and sliders 36 are arranged on both sides of a lifting plate 31. The sliders 36 are connected to the slide rails 35 through the first slide groove, so that the lifting plate 31 can move up and down quickly and stably through the first slide groove and the slide rails 35, effectively reducing the labor intensity of the operator.

[0053] In one embodiment of the centrifugal fan impeller disassembly and assembly device of this utility model, such as Figure 1 As shown, the support frame 12 is also equipped with a lifting scale block 13, which has scale lines.

[0054] The lifting plate 31 is provided with a protrusion 37, which is correspondingly provided with the lifting scale block 13.

[0055] This utility model sets scale lines on the lifting scale block 13 and sets the protrusion 37 corresponding to the lifting scale block 13. The scale lines enable the operator to clearly see the moving distance of the lifting plate 31, thereby enabling the impeller 6 to accurately connect with the centrifugal fan.

[0056] In one embodiment of the centrifugal fan impeller disassembly and assembly device of this utility model, such as Figure 1 and Figure 3 As shown, the adjustment assembly 5 includes a movable base 51, a fast adjustment part 53 and a slow adjustment part 52. The movable base 51 is slidably mounted on the lifting plate 31. The top of the movable base 51 is connected to the lower clamp 42. The fast adjustment part 53 and the slow adjustment part 52 are both connected to the movable base 51.

[0057] Specifically, when installing the impeller 6 of the centrifugal fan, the operator first clamps the impeller 6 of the centrifugal fan with the upper clamp 41 and the lower clamp 42. Then, the lifting plate 31 is moved vertically by the two screw lifters 32 so that the impeller 6 of the centrifugal fan corresponds to the centrifugal fan.

[0058] Next, the operator first adjusts the position of the movable base 51 through the fast adjustment unit 53, and then slowly adjusts the position of the movable base 51 through the slow adjustment unit 52 to ensure that the impeller 6 of the centrifugal fan is installed in an accurate position, and the operation is simple, and also avoids the problem of the impeller 6 colliding with the centrifugal fan.

[0059] In one embodiment of the centrifugal fan impeller disassembly and assembly device of this utility model, such as Figure 3 As shown, the adjustment component 5 also includes two first guide rails 54 and a horizontal scale block 55. The two first guide rails 54 are fixed on the lifting plate 31, and the horizontal scale block 55 is respectively arranged on the outside of the two first guide rails 54.

[0060] The bottom of the movable base 51 is provided with two first sliding grooves, and two first guide rails 54 are slidably connected to the two first sliding grooves.

[0061] Specifically, the two first guide rails 54 are located on both sides of the center line of the lifting plate 31 and correspond to the two first sliding grooves. The horizontal scale block 55 is provided with scale lines, which can be used to detect the moving distance of the moving base 51, further increasing the accuracy of the installation position of the centrifugal fan impeller 6.

[0062] This invention increases the stability of the moving base 51 by fixing two first guide rails 54 on the lifting plate 31, setting horizontal scale blocks 55 on the outer side of the two first guide rails 54 respectively, and making the two first guide rails 54 slidably connected to the two first sliding grooves.

[0063] In one embodiment of the centrifugal fan impeller disassembly and assembly device of this utility model, such as Figure 3 As shown, the slow adjustment unit 52 includes a fixed plate 521, a slow adjustment handwheel 522, a slow adjustment screw 523, a slow adjustment gearbox 524, and a connecting rod 525. The fixed plate 521 is connected to the fast adjustment unit 53. The slow adjustment gearbox 524 is mounted on the fixed plate 521. The first end of the slow adjustment screw 523 is connected to the slow adjustment handwheel 522, and the second end of the adjustment screw is connected to the slow adjustment gearbox 524. The first end of the connecting rod 525 is connected to the slow adjustment gearbox 524, and the second end of the connecting rod 525 is connected to the movable base 51.

[0064] Specifically, the movable base 51 is provided with a first mounting hole, and the second end of the connecting rod 525 is threadedly connected to the first mounting hole.

[0065] Both the slow adjustment screw 523 and the connecting rod 525 are threadedly connected to the gears inside the slow adjustment gearbox 524. This causes the slow adjustment screw 523 to rotate, which in turn drives the gears inside the slow adjustment gearbox 524 to rotate, thereby driving the connecting rod 525 to rotate. This, in turn, drives the movable base 51, which is threadedly connected to the connecting rod 525, to move. The movement speed is slow, which facilitates precise adjustment.

[0066] In one embodiment of the centrifugal fan impeller disassembly and assembly device of this utility model, such as Figure 3 As shown, the quick adjustment unit 53 includes a quick adjustment handwheel 531, a quick adjustment screw 532, a quick adjustment gearbox 533, a connecting block 535, and two second guide rails 534. The two second guide rails 534 are spaced apart on the lifting plate 31. The bottom of the connecting block 535 is slidably connected to the second guide rails 534 through a second sliding groove. The fixing plate 521 is disposed on the top of the connecting block 535. The quick adjustment handwheel 531 is connected to the quick adjustment gearbox 533. The two ends of the quick adjustment screw 532 are respectively connected to the quick adjustment gearbox 533 and the connecting block 535.

[0067] Specifically, the bottom of the connecting block 535 is provided with a second mounting hole, and the quick-adjusting screw 532 is threadedly connected to the second mounting hole.

[0068] Both the quick-adjusting screw 532 and the quick-adjusting handwheel 531 are threadedly connected to the gears inside the quick-adjusting gearbox 533. This causes the quick-adjusting handwheel 531 to rotate, which in turn drives the gears inside the quick-adjusting gearbox 533 to rotate, thereby driving the quick-adjusting screw 532 to rotate. The rotation of the quick-adjusting screw 532 causes the connecting block 535 to move, which in turn drives the entire slow-adjusting section 52 to move. The movement speed is fast, making it easy to adjust quickly.

[0069] The slow movement speed of the slow adjustment unit 52 and the fast movement speed of the fast adjustment unit 53 are achieved by adjusting the number of teeth and diameter of the gears inside the slow adjustment gearbox 524 and the fast adjustment gearbox 533. When the number of teeth of the gear inside the slow adjustment gearbox 524 is greater than the number of teeth of the gear inside the fast adjustment gearbox 533, or when the diameter of the gear inside the slow adjustment gearbox 524 is smaller than the diameter of the gear inside the fast adjustment gearbox 533, the movement speed of the slow adjustment unit 52 is slower than the movement speed of the fast adjustment unit 53. It should be noted that the number of teeth and diameter of the gears inside the slow adjustment gearbox 524 and the fast adjustment gearbox 533 are not limited here.

[0070] Furthermore, the adjustment assembly 5 also includes three bearing seats, all of which are installed on the lifting mechanism and are respectively connected to the slow adjustment screw 523, the connecting rod 525, and the fast adjustment screw 532 to provide support for the slow adjustment screw 523, the connecting rod 525, and the fast adjustment screw 532.

[0071] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A device for disassembling and assembling a centrifugal fan impeller, characterized in that, include: Fixed bracket, support plate, lifting assembly, clamping assembly, and adjustment assembly; The support plate is mounted on the fixed bracket; The lifting assembly includes a lifting plate, two screw lifts, and a sliding part. The lifting plate is slidably mounted on the fixed bracket via the sliding part. The two screw lifts are respectively located near both ends of the support plate, and both screw lifts are connected to the bottom of the lifting plate to drive the lifting plate to move up and down. The clamping assembly includes an upper clamp and a lower clamp. The lower clamp is disposed on the lifting plate, and the upper clamp is connected to the lower clamp. The upper clamp and the lower clamp are used to clamp the impeller of the centrifugal fan. The adjustment component is disposed on the lifting plate and connected to the lower clamp, and is used to adjust the horizontal position of the lower clamp.

2. The centrifugal fan impeller disassembly and assembly device according to claim 1, characterized in that, The upper clamp has a first V-shaped notch at its center, the lower clamp has a second V-shaped notch at its center, and the impeller of the centrifugal fan is located between the first V-shaped notch and the second V-shaped notch.

3. The centrifugal fan impeller disassembly and assembly device according to claim 1, characterized in that, The clamping assembly further includes a clamping bolt, a first connecting hole, and a second connecting hole. The first connecting hole and the second connecting hole are respectively provided on both sides of the upper clamp and the lower clamp. The clamping bolt passes through the first connecting hole and is threadedly connected to the second connecting hole.

4. The centrifugal fan impeller disassembly and assembly device according to claim 1, characterized in that, The lifting assembly also includes a threaded rod and a lifting handwheel. The first end of the threaded rod is connected to the lifting handwheel, and the second end of the threaded rod is connected to the two screw jacks.

5. The centrifugal fan impeller disassembly and assembly device according to claim 1, characterized in that, The fixed bracket includes a fixed frame and two support frames, with the two support frames respectively disposed on both sides of the fixed frame and perpendicularly connected to the fixed frame; The sliding part includes a slide rail and a slider. The slide rail is respectively disposed on the support frame, and the slider is respectively disposed on both sides of the lifting plate. The slider is provided with a first slide groove, and the slider is connected to the slide rail through the first slide groove.

6. The centrifugal fan impeller disassembly and assembly device according to claim 5, characterized in that, The support frame is also equipped with a lifting scale block, which has scale lines. The lifting plate is provided with a protrusion, which is correspondingly provided with the lifting scale block.

7. The centrifugal fan impeller disassembly and assembly device according to claim 1, characterized in that, The adjustment assembly includes a movable base, a fast adjustment part, and a slow adjustment part. The movable base is slidably disposed on the lifting plate, and the top end of the movable base is connected to the lower clamp. Both the fast adjustment part and the slow adjustment part are connected to the movable base.

8. The centrifugal fan impeller disassembly and assembly device according to claim 7, characterized in that, The adjustment assembly also includes two first guide rails and a horizontal scale block. The two first guide rails are fixed on the lifting plate, and the horizontal scale block is respectively disposed on the outside of the two first guide rails. The bottom of the mobile base is provided with two first sliding grooves, and the two first guide rails are slidably connected to the two first sliding grooves.

9. The centrifugal fan impeller disassembly and assembly device according to claim 7, characterized in that, The slow adjustment unit includes a fixed plate, a slow adjustment handwheel, a slow adjustment screw, a slow adjustment gearbox, and a connecting rod. The fixed plate is connected to the fast adjustment unit, the slow adjustment gearbox is disposed on the fixed plate, the first end of the slow adjustment screw is connected to the slow adjustment handwheel, the second end of the adjustment screw is connected to the slow adjustment gearbox, the first end of the connecting rod is connected to the slow adjustment gearbox, and the second end of the connecting rod is connected to the movable base.

10. The centrifugal fan impeller disassembly and assembly device according to claim 9, characterized in that, The quick-adjustment unit includes a quick-adjustment handwheel, a quick-adjustment screw, a quick-adjustment gearbox, a connecting block, and two second guide rails. The two second guide rails are spaced apart on the lifting plate. The bottom of the connecting block is slidably connected to the second guide rails through a second sliding groove. The fixing plate is disposed on the top of the connecting block. The quick-adjustment handwheel is connected to the quick-adjustment gearbox. The two ends of the quick-adjustment screw are respectively connected to the quick-adjustment gearbox and the connecting block.

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