Roots blower impeller turning device and method using dynamic balance weight removal method

Abstract

The application belongs to the technical field of impeller processing, and particularly relates to a Roots blower impeller turning device and method using dynamic balance weight removal method. The device comprises a base plate, which is provided with a bearing support and a movable seat body. The movable seat body is moved by a bidirectional screw rod. The synchronous transmission belt is automatically placed on the impeller rotating shaft by a hydraulic structure to drive the impeller to rotate. The detection efficiency is improved without manual operation. The conveying structure can automatically convey the impeller to the bearing support to realize automatic feeding. The movable seat body can also drive the vibration detection sensor to rotate when moving, so that the vibration condition of the impeller is conveniently detected. In addition, a material collecting groove and an inclined guide plate are arranged to facilitate the collection of debris and the removal of the processed impeller.

Description

TECHNICAL FIELD

[0001] The application relates to the impeller machining technical field, in particular to a Roots blower impeller turning device and method applying a dynamic balance weight removal method. BACKGROUND

[0002] In the manufacturing process of the Roots blower, the balance precision of the impeller has a vital influence on the performance and service life of the blower. In the machining process of the impeller, due to factors such as uneven material and machining error, the mass distribution of the impeller is often uneven, which leads to vibration and noise of the impeller during high-speed rotation, reduces the efficiency of the blower, and even damages the blower parts.

[0003] In the traditional way, the synchronous transmission belt is manually arranged on the rotating shaft of the impeller to drive the impeller to rotate for detecting the overweight position, which is low in efficiency and high in labor intensity. Meanwhile, the feeding of the impeller is also manually operated, which not only consumes labor but also is prone to feeding inaccuracy and the like, and affects the subsequent machining precision. In addition, the position adjustment of the vibration detection sensor is not flexible enough during the rotating detection of the impeller, and the vibration condition of the impeller cannot be efficiently and accurately obtained, which further affects the judgment of the overweight position of the impeller and the calculation of the drilling angle and depth, and there are many inconveniences and efficiency bottlenecks in the overall production process. SUMMARY

[0004] The application aims at solving the problem of low efficiency of manual operation in the existing impeller weight removal operation, and provides a Roots blower impeller turning device and method applying a dynamic balance weight removal method.

[0005] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme:

[0006] The Roots blower impeller turning device applying the dynamic balance weight removal method comprises:

[0007] A base plate, two bearing supports are fixed on the top of the base plate, and an elastic support rubber roller is rotationally connected to the top of each bearing support, which is used for supporting the rotating shaft of the impeller;

[0008] Two movable seat bodies, each movable seat body is slidingly arranged on the top of the base plate, a double-direction screw rod is rotationally connected to the top of the base plate through a bearing block, the double-direction screw rod is threadedly connected with the movable seat bodies, and each movable seat body is located on the forward or reverse threaded segment of the double-direction screw rod;

[0009] A drilling structure is arranged on the top of each movable seat body and used for drilling and removing the weight of the impeller;

[0010] A driving structure is arranged in the movable seat body, and the driving structure comprises a synchronous transmission belt, which is used to drive the impeller to rotate when the two movable seat bodies are close to each other.

[0011] A conveying structure is arranged on the top of the base plate, and the conveying structure comprises two transmission belts, which are used to automatically convey the impeller between the elastic support rubber rollers on the bearing support.

[0012] The bidirectional screw rod drives the two movable seat bodies to move towards each other, the driving structure drives the synchronous transmission belt to be sleeved on the rotating shaft of the impeller and drives the impeller to rotate, and the drilling structure drills the impeller in rotation.

[0013] In a possible design, the drilling structure comprises an air pressure cylinder fixedly arranged on the top of the movable seat body, an output shaft of the air pressure cylinder is fixedly connected with a lifting workbench, the lifting workbench is provided with a concave groove, the concave groove is rotatably connected with a threaded transmission rod, the lifting workbench is slidably connected with a sliding workbench, the sliding workbench is threadedly connected with the threaded transmission rod, a distance detection sensor is fixedly arranged on one side of the sliding workbench close to the bearing support, and a drilling machine is fixedly arranged on the top of the sliding workbench.

[0014] The air pressure cylinder drives the lifting workbench to lift to adjust the drilling height, the threaded transmission rod drives the sliding workbench and the drilling machine to move towards the impeller, and the distance detection sensor detects the drilling depth.

[0015] In a possible design, the driving structure further comprises a hydraulic guide groove arranged on one side of the movable seat body close to the bearing support, an L-shaped plate I is sealingly and slidably connected in the hydraulic guide groove, a rotating disc is rotatably connected to one side of the L-shaped plate I away from the movable seat body, and the rotating disc is used to abut against one end of the rotating shaft of the impeller.

[0016] A vertical rod is fixedly arranged on one side of the movable seat body close to the bearing support, an L-shaped plate II is slidably sleeved on the outer wall of the vertical rod, the L-shaped plate II is arranged on one side of the L-shaped plate I close to the bearing support, an elastic spring element is sleeved on the outer wall of the vertical rod, and two ends of the elastic spring element are fixedly connected with the bottom of the L-shaped plate II and the vertical rod, respectively, so as to drive the L-shaped plate II to move upwards and reset.

[0017] Synchronous pulleys I and two synchronous pulleys II are rotatably connected to one side of the L-shaped plate II close to the bearing support, and the synchronous transmission belt cooperates with the synchronous pulleys I and the synchronous pulleys II.

[0018] The two movable seats move toward each other and clamp and position the two ends of the impeller shaft through the L-shaped plate I and the rotating disk. The L-shaped plate I slides into the hydraulic guide groove and presses hydraulic oil into the hydraulic cylinder through the hydraulic oil supply pipe, driving the L-shaped plate II to move down, so that the synchronous transmission belt is tensioned and sleeved on the outer wall of the impeller shaft.

[0019] In one possible design, the drive structure further includes a hydraulic cylinder fixed to the movable seat near the bearing support. A hydraulic piston rod is slidably connected inside the hydraulic cylinder. The bottom end of the hydraulic piston rod extends to the bottom of the hydraulic cylinder and is fixedly connected to the L-shaped plate II. The inner wall of one side of the hydraulic guide groove is fixedly connected to the top of the hydraulic cylinder through the hydraulic oil supply pipe.

[0020] In one possible design, a rotating rod is rotatably connected to the top of the bearing support, a placement plate I is fixed to the top of the rotating rod, a vibration detection sensor is fixed to the bottom of the placement plate I, a transmission gear is fixedly sleeved on the outer wall of the rotating rod, and a linear rack is fixed to one side of the movable seat, the linear rack meshing with the transmission gear.

[0021] The movable seat moves to drive the linear rack to rotate the transmission gear and the rotating rod, thereby causing the placement plate I and the vibration detection sensor on it to rotate above the impeller shaft to detect the vibration when the impeller rotates.

[0022] In one possible design, the conveying structure further includes a protruding plate fixed to one side of the base plate. Two support plates are fixed to the top of the protruding plate. Two power transmission shafts are rotatably connected between the two support plates. Transmission conveying rollers are fixedly sleeved on the outer walls of the two power transmission shafts. The two transmission conveying rollers on the same side are connected by transmission belts. Multiple mounting plates are fixed to the outer walls of the two transmission belts. The mounting plates on the two transmission belts are positioned in pairs.

[0023] The bottom of the fixed mounting plate is provided with a rectangular groove, and a fixed connecting rod is fixed in the rectangular groove. A movable iron plate is slidably sleeved on the outer wall of the fixed connecting rod. A tension spring II is sleeved on the outer wall of the fixed connecting rod. The two ends of the tension spring II are fixedly connected to the inner wall of the rectangular groove and the movable iron plate, respectively. A conical sleeve is rotatably connected to one side of the movable iron plate. Two adjacent conical sleeves are used to be inserted into the same hole of the same impeller to achieve clamping.

[0024] Equipment mounting platforms are fixed to the bottom of both support plates. The equipment mounting platforms are located above the bearing supports. Permanent magnets are fixed to the sides of the two equipment mounting platforms that are close to each other.

[0025] When the transmission belt transports the impeller to the support, the magnetic attraction force generated by the permanent magnet on the movable iron plate overcomes the tension of the tension spring II, driving the movable iron plate to move the conical sleeve outward, thereby releasing the impeller so that it falls onto the elastic support rubber roller.

[0026] In one possible design, a sliding guide groove is provided inside the L-shaped plate II, and a sliding guide block is slidably connected inside the sliding guide groove. The bottom of the sliding guide block is elastically connected to the bottom inner wall of the sliding guide groove by a tension spring I. The synchronous pulley I is rotatably connected to one side of the sliding guide block for automatically adjusting the tension of the synchronous transmission belt.

[0027] In one possible design, a placement plate II is slidably connected between the two bearing supports. The top of the placement plate II is provided with a material collection trough. An arc-shaped guard plate is fixed to the top of the placement plate II. An electric linear actuator is fixedly installed between the two bearing supports through a horizontal plate. The output shaft of the electric linear actuator is fixedly connected to the bottom of the placement plate II through a connecting plate.

[0028] The electric linear actuator drives the placement plate II to move, which can push the impeller that has completed the de-weighting operation off the bearing support, and the debris generated by drilling falls into the material collection tank.

[0029] In one possible design, an inclined guide plate is fixed to one side of each of the two bearing supports, the inclined guide plate being fixed to the top of the protruding plate by a support leg, and a limit baffle is fixed to one side of the inclined guide plate, the limit baffle being fixed to the top of the protruding plate.

[0030] The ejected impeller slides down the inclined guide plate and is limited by the limiting baffle.

[0031] The method of using the Roots blower impeller turning device employing dynamic balancing for weight reduction in this application includes the following steps:

[0032] S1. The motor drives one of the power transmission shafts to rotate. The two power transmission shafts are connected by transmission conveying rollers and transmission belts to transport the impeller to the top of the support. At this time, the iron movable plate is aligned with the permanent magnet. The permanent magnet generates a magnetic attraction force on the iron movable plate, and the magnetic attraction force is greater than the tension of the tension spring II. The iron movable plate and the conical sleeve move outward. The conical sleeve disengages from the hole in the impeller. The two adjacent conical sleeves release their clamping on the impeller. The impeller falls onto the support. The shaft of the impeller is located between two elastic support rubber rollers. The automatic feeding operation of the impeller is initially completed.

[0033] S2. The double-sided spiral screw is driven by a motor to rotate, which in turn drives two movable seats to move towards each other. The two movable seats clamp the two ends of the impeller shaft through L-shaped plate I, completing the positioning of the impeller. The rotating disk abuts against one end of the impeller to reduce the friction between the impeller and L-shaped plate I when the impeller rotates. At this time, the synchronous transmission belt is located above the impeller shaft. As the movable seats continue to move, L-shaped plate I extends into the hydraulic guide groove and injects hydraulic oil into the hydraulic cylinder through the hydraulic oil supply pipe, and pushes... The hydraulic piston rod moves downward, causing the L-shaped plate II to move downward as well. This allows the synchronous transmission belt to rest on the outer wall of the impeller shaft. As the L-shaped plate II continues to move downward, it increases the friction between the synchronous transmission belt and the impeller. The tension spring I and the sliding guide block work together to adjust the tension of the synchronous transmission belt, thus completing the engagement between the synchronous transmission belt and the impeller. Later, when the synchronous pulley I is driven to rotate by the motor, the impeller can be driven to rotate. This facilitates the measurement of the impeller's overload position without the need for manual placement of the synchronous transmission belt on the impeller shaft, greatly improving the impeller detection efficiency.

[0034] S3. When the movable base moves to the center, the movable base drives the linear rack to move. The linear rack meshes with the transmission gear, driving the rotating rod and the placement plate I to rotate 180°, moving the vibration detection sensor above the impeller shaft. When the synchronous pulley II drives the impeller to rotate through the synchronous transmission belt, the vibration detection sensor detects the vibration of the impeller, which facilitates the detection of the overload position of the impeller and the calculation of the drilling angle and depth of the impeller.

[0035] S4. During drilling, the output shaft of the pneumatic cylinder pushes the lifting worktable up and down, controlling the drilling machine to move to the corresponding drilling height. The impeller is driven to rotate through the cooperation of the synchronous pulley II and the synchronous transmission belt, controlling the drilling angle. The threaded transmission rod is driven to rotate by the motor, and the threaded transmission rod drives the drilling machine to move towards the impeller. The distance detection sensor detects the drilling depth of the drilling machine, thus completing the de-weighting operation of the impeller.

[0036] S5. During the deweighting process, the material collection trough is used to collect debris. After the deweighting is completed, the two movable seats move to the sides and reset. The output shaft of the electric linear push rod drives the placement plate II and the arc-shaped guard plate to move to one side, pushing the deweighted impeller off the bearing support and onto the inclined guide plate. The limiting baffle limits the impeller, making it easy for the staff to remove the deweighted impeller later. The operation is fully automatic, eliminating the need for manual loading and unloading of materials and determining the drilling angle, height, and depth, which greatly improves production efficiency.

[0037] Beneficial effects: In this invention, an L-shaped plate I is slidably connected inside the hydraulic guide groove, and an L-shaped plate II is slidably sleeved on the outer wall of the vertical rod. A synchronous pulley I and two synchronous pulleys II are rotatably connected to the side of the L-shaped plate II near the bearing support. A hydraulic piston rod is slidably connected inside the hydraulic cylinder. The inner wall of one side of the hydraulic guide groove and the top of the hydraulic cylinder are fixedly connected by a hydraulic oil supply pipe. Two movable seats clamp the two ends of the impeller shaft through the L-shaped plate I to complete the positioning of the impeller. The L-shaped plate I injects hydraulic oil into the hydraulic cylinder and pushes the L-shaped plate II down through the hydraulic piston rod, which allows the synchronous transmission belt to rest on the outer wall of the impeller shaft. This facilitates the subsequent driving of the impeller rotation and measurement of the overload position without the need for manual placement of the synchronous transmission belt on the impeller shaft, greatly improving the impeller detection efficiency.

[0038] In this invention, two power transmission shafts are rotatably connected between the two support plates. Two transmission conveying rollers are fixedly sleeved on the outer walls of each of the two power transmission shafts. Multiple fixed mounting plates are fixed on the outer walls of each of the two transmission belts. A fixed connecting rod is fixed within the rectangular groove. An iron movable plate is slidably sleeved on the outer wall of the fixed connecting rod. A conical sleeve is rotatably connected to one side of the iron movable plate. Permanent magnets are fixed on the sides of the two equipment mounting platforms that are close to each other. The transmission belts transport the impeller to the top of the bearing support. The permanent magnets generate magnetic attraction on the iron movable plate, causing the iron movable plate and the conical sleeve to move outwards. The conical sleeve disengages from the hole in the impeller, and the two adjacent conical sleeves release their clamping grip on the impeller. The impeller falls onto the bearing support, and the impeller's shaft is located between two elastic support rubber rollers, thus initially completing the automatic feeding operation of the impeller.

[0039] In this invention, the synchronous transmission belt is automatically placed on the impeller shaft during the impeller de-weighting operation, eliminating the need for manual operation and significantly improving impeller detection efficiency. The conveying structure can automatically feed the impeller, saving manpower and improving feeding accuracy. The movable base drives the vibration detection sensor to rotate flexibly, facilitating the detection of impeller vibration, accurately determining the overweight position, and calculating drilling parameters. At the same time, the material collection trough and inclined guide plate facilitate the collection of debris and the removal of the processed impeller, optimizing the entire impeller processing flow and improving production efficiency and processing quality. Attached Figure Description

[0040] Figure 1 A three-dimensional structural schematic diagram of the Roots blower impeller turning device using the dynamic balancing weight reduction method provided by the present invention;

[0041] Figure 2 A three-dimensional structural diagram of the movable base and bearing support of the Roots blower impeller turning device using the dynamic balancing weight reduction method provided by the present invention.

[0042] Figure 3 A three-dimensional exploded view of the bearing support, the placement plate II, and the arc-shaped guard plate of the Roots blower impeller turning device using the dynamic balancing weight reduction method provided in this invention.

[0043] Figure 4 A three-dimensional structural diagram of the movable base, L-shaped plate II, and lifting worktable of the Roots blower impeller turning device using the dynamic balancing weight reduction method provided by the present invention.

[0044] Figure 5 A three-dimensional exploded view of the sliding worktable, lifting worktable, and movable seat of the Roots blower impeller turning device using the dynamic balancing weight reduction method provided in this invention.

[0045] Figure 6 A cross-sectional view of the movable base and L-shaped plate II of the Roots blower impeller turning device using the dynamic balancing weight reduction method provided by the present invention.

[0046] Figure 7 A three-dimensional exploded structural diagram of the transmission gear, rotating rod, and placement plate I of the Roots blower impeller turning device using the dynamic balancing weight reduction method provided by the present invention.

[0047] Figure 8 A three-dimensional cross-sectional structural diagram of the hydraulic cylinder of the Roots blower impeller turning device using the dynamic balancing weight reduction method provided in this invention;

[0048] Figure 9 A three-dimensional exploded view of the L-shaped plate II, vertical rod, and sliding guide block of the Roots blower impeller turning device using the dynamic balancing weight reduction method provided in this invention;

[0049] Figure 10 A three-dimensional structural diagram of the bearing support, placement plate II, and support plate of the Roots blower impeller turning device using the dynamic balancing weight reduction method provided by the present invention.

[0050] Figure 11 A three-dimensional structural diagram of the support plate, power transmission shaft, and equipment mounting platform of the Roots blower impeller turning device using the dynamic balancing weight reduction method provided by the present invention.

[0051] Figure 12 A three-dimensional exploded view of the fixed mounting plate, the movable iron plate, and the permanent magnet of the Roots blower impeller turning device that uses the dynamic balancing weight reduction method provided by the present invention.

[0052] Figure 13 This is a schematic diagram of the initial state of the automatic dynamic balancing and weight reduction method provided by the present invention;

[0053] Figure 14 A first-view structural schematic diagram of the automatic dynamic balancing and weight reduction method provided by the present invention;

[0054] Figure 15 This is a second-view structural schematic diagram of the automatic dynamic balancing and weight reduction method provided by the present invention.

[0055] In the diagram: 1. Base plate; 2. Bearing support; 3. Elastic support rubber roller; 4. Double-sided helical screw; 5. Movable seat; 6. Hydraulic guide groove; 7. L-shaped plate I; 8. Rotary disk; 9. Hydraulic oil supply pipe; 10. Hydraulic cylinder; 11. Hydraulic piston rod; 12. Vertical rod; 13. Elastic spring element; 14. L-shaped plate II; 15. Sliding guide groove; 16. Sliding guide block; 17. Tension spring I; 18. Synchronous pulley I; 19. Synchronous pulley II; 20. Synchronous transmission belt; 21. Rotating rod; 22. Placing plate I; 23. Vibration detection sensor; 24. Transmission gear; 25. Linear rack; 26. Pneumatic cylinder 27. Lifting worktable; 28. Concave groove; 29. ​​Threaded transmission rod; 30. Sliding worktable; 31. Distance detection sensor; 32. Drilling machine; 33. Raised plate; 34. Support plate; 35. Power transmission shaft; 36. Transmission conveyor roller; 37. Transmission belt; 38. Fixed mounting plate; 39. Rectangular groove; 40. Fixed connecting rod; 41. Iron movable plate; 42. Tension spring II; 43. Conical sleeve; 44. Equipment mounting platform; 45. Permanent magnet; 46. Placing plate II; 47. Material collection trough; 48. Arc-shaped guard plate; 49. Electric linear actuator; 50. Inclined guide plate; 51. Limiting baffle. Detailed Implementation

[0056] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0057] In one embodiment: Refer to Figures 1-12This turning device relates to the field of impeller machining technology and mainly includes components such as a base plate 1, a bearing support 2, elastic support rubber rollers 3, a movable seat 5, a bidirectional helical screw 4, a drilling structure, a drive structure, an upper conveying structure, a placement plate II 46, an electric linear push rod 49, and an inclined guide plate 50. These components work together to achieve automatic impeller feeding, positioning, detection, and weight removal functions.

[0058] Reference Figure 3 The base plate 1, serving as the fundamental support component of the entire device, is made of high-strength steel, possessing excellent rigidity and stability. Two load-bearing supports 2, also made of steel, are bolted to its top to ensure they can withstand the weight of the impeller and related components. Each load-bearing support 2 is rotatably connected to two elastic support rubber rollers 3 via bearings. These rollers are made of high-quality rubber, exhibiting a certain degree of elasticity and wear resistance. Their elastic modulus is in the range of 0.5-1.5 N / mm.

[0059] Reference Figure 2 Two movable seats 5 are slidably mounted on top of the base plate 1 via linear guide rails. A bidirectional helical screw 4 is rotatably connected to the top of the base plate 1 via a base. The bidirectional helical screw 4 is made of alloy steel, hardened to a surface hardness of HRC50-55, and possesses good wear resistance and fatigue resistance. Its forward and reverse threaded sections are threadedly connected to the two movable seats 5 respectively. By rotating the bidirectional helical screw 4, the two movable seats 5 can move synchronously in opposite directions, achieving the positioning and clamping of the impeller.

[0060] Reference Figure 4 and Figure 5The drilling structure is fixedly mounted on the top of the movable base 5 and mainly includes a pneumatic cylinder 26, a lifting worktable 27, a threaded transmission rod 29, a sliding worktable 30, a distance detection sensor 31, and a drilling machine 32. The pneumatic cylinder 26 is a standard cylinder, capable of providing sufficient thrust to raise and lower the lifting worktable 27. The output shaft of the pneumatic cylinder 26 is bolted to the lifting worktable 27. The lifting worktable 27 has a concave groove 28, within which the threaded transmission rod 29 is rotatably connected via bearings. The top of the lifting worktable 27 is slidably connected to the sliding worktable 30 via a linear guide rail, and the sliding worktable 30 is threadedly connected to the threaded transmission rod 29. Driving the threaded transmission rod 29 with a motor causes it to rotate, which in turn moves the sliding worktable 30 along the linear guide rail. A distance detection sensor 31 is fixed on the side of the sliding worktable 30 near the support 2. The distance detection sensor 31 is a laser displacement sensor with a measurement accuracy of ±0.01mm, which can detect the distance between the drilling machine 32 and the impeller in real time, i.e., the drilling depth. The drilling machine 32 is fixed to the top of the sliding worktable 30 by bolts. The drilling machine 32 uses a high-speed electric spindle, which can meet the drilling requirements of impellers of different materials.

[0061] During drilling, the output shaft of the pneumatic cylinder 26 pushes the lifting worktable 27 to rise and fall, moving the drilling machine 32 to the corresponding drilling height. The synchronous pulley II 19, in conjunction with the synchronous transmission belt 20, drives the impeller to rotate, controlling the drilling angle. Then, the motor drives the threaded transmission rod 29 to rotate, causing the drilling machine 32 to move towards the impeller. The distance detection sensor 31 detects the drilling depth in real time. When the preset depth is reached, drilling stops, completing the de-laden operation on the impeller.

[0062] Reference Figure 5 and Figure 6 The drive structure is housed within the movable base 5 and mainly includes a hydraulic guide groove 6, an L-shaped plate I 7, a rotating disk 8, a vertical rod 12, an elastic spring element 13, an L-shaped plate II 14, a synchronous pulley I 18, a synchronous pulley II 19, and a synchronous transmission belt 20. The hydraulic guide groove 6 is located on the side of the movable base 5 closest to the bearing support 2 and is filled with hydraulic oil. The L-shaped plate I 7 is slidably and sealed within the hydraulic guide groove 6. The side of the L-shaped plate I 7 furthest from the movable base 5 is rotatably connected to the rotating disk 8 via a bearing. The rotating disk 8 is made of wear-resistant steel with a polished surface and abuts against one end of the impeller shaft, reducing friction between the impeller shaft and the L-shaped plate I 7, thus minimizing energy loss and wear.

[0063] Reference Figure 6 and Figure 9A vertical rod 12 is fixed to the side of the movable seat 5 near the bearing support 2. An L-shaped plate II 14, which is slidably connected to the movable seat 5, is slidably sleeved on the outer wall of the vertical rod 12. The L-shaped plate II 14 is located on the side of the L-shaped plate I 7 near the bearing support 2. An elastic spring element 13 is sleeved on the outer wall of the vertical rod 12. The elastic spring element 13 is a cylindrical helical spring with a wire diameter of 2-5mm, an outer diameter of 10-20mm, a free height of 20-50mm, and a stiffness coefficient in the range of 5-15N / mm. The top end of the elastic spring element 13 is fixedly connected to the bottom of the L-shaped plate II 14 through a spring seat, and the bottom end is fixedly connected to the outer wall of the vertical rod 12 through a spring seat, which is used to drive the L-shaped plate II 14 to move upward and reset. A synchronous pulley I 18 and two synchronous pulleys II 19 are rotatably connected to the side of the L-shaped plate II 14 near the bearing support 2 through a bearing. The synchronous transmission belt 20 cooperates with the outer wall of the synchronous pulleys I 18, II 19, and impeller.

[0064] The bidirectional screw 4 drives two movable seats 5 to move towards each other. The two movable seats 5 clamp the two ends of the impeller shaft through the L-shaped plate I7, thus positioning the impeller. At this time, the rotating disk 8 abuts against one end of the impeller. As the movable seats 5 continue to move, the L-shaped plate I7 ​​extends into the hydraulic guide groove 6, injecting hydraulic oil into the hydraulic cylinder 10 through the hydraulic oil supply pipe 9.

[0065] Reference Figure 5 , Figure 6 and Figure 8 The hydraulic cylinder 10 is fixed to the movable base 5 near the bearing support 2. An internally sealed sliding connection is provided with a hydraulic piston rod 11. The bottom end of the hydraulic piston rod 11 extends below the hydraulic cylinder 10 and is fixedly connected to the L-shaped plate II 14. Hydraulic oil pushes the hydraulic piston rod 11 downwards, causing the L-shaped plate II 14 to move downwards, so that the synchronous transmission belt 20 rests on the outer wall of the impeller shaft. As the L-shaped plate II 14 continues to move downwards, it increases the frictional force between the synchronous transmission belt 20 and the impeller.

[0066] Reference Figure 9 The L-shaped plate II14 is provided with a sliding guide groove 15, and a sliding guide block 16 is slidably connected in the sliding guide groove 15. The bottom of the sliding guide block 16 and the bottom inner wall of the sliding guide groove 15 are elastically abutted by a tension spring I17. The tension spring I17 is a cylindrical helical spring with a wire diameter of 1-3mm, an outer diameter of 5-15mm, a free height of 10-30mm, and a stiffness coefficient in the range of 2-8N / mm.

[0067] Synchronous pulley I18 rotates on one side of sliding guide block 16. The tension of synchronous transmission belt 20 can be adjusted through the cooperation of tension spring I17 and sliding guide block 16, ensuring good transmission between synchronous transmission belt 20 and impeller. Later, when synchronous pulley I18 is driven to rotate by a motor, the impeller can be driven to rotate, facilitating the measurement of impeller overload position without requiring manual placement of synchronous transmission belt 20 on the impeller shaft, greatly improving impeller detection efficiency.

[0068] Reference Figure 3 , Figure 4 and Figure 7 A rotating rod 21 is rotatably mounted on the top of the support 2 via a bearing. A placement plate I 22 is fixed to the top of the rotating rod 21, and a vibration detection sensor 23 is fixed to the bottom of the placement plate I 22. The vibration detection sensor 23 is an accelerometer with a measurement range of ±50g and a frequency response range of 0.5-5000Hz, which can accurately detect the vibration of the impeller shaft when the impeller rotates. A transmission gear 24 is fixedly sleeved on the outer wall of the rotating rod 21, and a linear rack 25 is fixed to one side of the movable seat 5, meshing with the transmission gear 24.

[0069] When the movable base 5 moves towards the bearing support 2, it drives the linear rack 25 to move. The linear rack 25 meshes with the transmission gear 24, driving the rotating rod 21 and the placement plate I 22 to rotate 180°, moving the vibration detection sensor 23 above the impeller shaft. When the synchronous pulley II 19 drives the impeller to rotate through the synchronous transmission belt 20, the vibration detection sensor 23 detects the vibration of the impeller in real time and transmits the signal to the control system. The control system analyzes and processes the vibration data and uses the algorithm of the dynamic balancing weight reduction method to determine the overweight position of the impeller and calculate the drilling angle and depth of the impeller, providing an accurate basis for subsequent weight reduction operations.

[0070] Reference Figure 1 , Figure 10 and Figure 11The upper conveying structure is located on top of the base plate 1 and mainly includes a raised plate 33, a support plate 34, a power transmission shaft 35, a transmission conveying roller 36, a transmission belt 37, a fixed mounting plate 38, a fixed connecting rod 40, a movable iron plate 41, a tension spring II 42, a conical sleeve 43, an equipment mounting platform 44, and a permanent magnet 45. The raised plate 33 is fixed to one side of the base plate 1, and its top is bolted to two support plates 34. Two power transmission shafts 35 are rotatably connected between the two support plates 34 via bearings. The power transmission shafts 35 are made of alloy steel. Two transmission conveying rollers 36 are fixedly fitted onto the outer walls of each of the two power transmission shafts 35. The four transmission conveying rollers 36 are arranged in pairs, and the two transmission conveying rollers 36 in the same pair are connected by a transmission belt 37. The transmission belt 37 is a rubber conveyor belt, capable of bearing the weight of the impeller and providing stable conveying.

[0071] Reference Figure 11 and Figure 12 Multiple mounting plates 38 are fixed to the outer walls of both transmission belts 37, and the mounting plates 38 on the two transmission belts 37 are positioned in pairs. A rectangular groove 39 is provided at the bottom of each mounting plate 38, and a fixed connecting rod 40 is fixed within the rectangular groove 39. A movable iron plate 41 is slidably fitted onto the outer wall of the fixed connecting rod 40, and the movable iron plate 41 slides within the rectangular groove 39. A tension spring II 42 is fitted onto the outer wall of the fixed connecting rod 40. The tension spring II 42 is a cylindrical helical spring with a wire diameter of 1-3mm, an outer diameter of 5-15mm, a free height of 10-30mm, and a stiffness coefficient in the range of 2-8N / mm. The two ends of the tension spring II 42 are fixedly connected to one side of the inner wall of the rectangular groove 39 and one side of the movable iron plate 41 via spring seats, respectively, to pull the movable iron plate 41 towards the center. A tapered sleeve 43 is rotatably connected to one side of the movable iron plate 41 via a bearing. Two adjacent tapered sleeves 43 extend into the same hole on the same impeller for clamping the impeller.

[0072] Reference Figure 11 and Figure 12 Equipment mounting platforms 44 are fixed to the bottom of both support plates 34. The equipment mounting platforms 44 are located above the bearing support 2. Permanent magnets 45 are fixed to the side of the two equipment mounting platforms 44 that are close to each other. The permanent magnets 45 generate magnetic attraction force on the iron movable plate 41, and the magnetic attraction force is greater than the tension of the tension spring II 42.

[0073] During the conveying process, two power drive shafts 35 are connected by a transmission conveying roller 36 and a transmission belt 37 to transport the impeller to the top of the support 2. At this time, the movable iron plate 41 is aligned with the permanent magnet 45. The permanent magnet 45 generates a magnetic attraction force on the movable iron plate 41, causing the movable iron plate 41 and the conical sleeve 43 to move outward. The conical sleeve 43 disengages from the hole in the impeller, and the two adjacent conical sleeves 43 release their clamping force on the impeller. The impeller falls onto the support 2, and the shaft of the impeller is located between two elastic support rubber rollers 3, thus initially completing the automatic feeding operation of the impeller.

[0074] Reference Figure 3 A mounting plate II 46 is slidably connected between two support bases 2. The top of the mounting plate II 46 has two material collection troughs 47 for collecting debris generated during drilling by the drilling machine 32, maintaining a clean working environment. Multiple arc-shaped guard plates 48 are fixed to the top of the mounting plate II 46 to prevent the impeller from rolling off during placement and movement. An electric linear actuator 49 is fixedly installed between the two support bases 2 via a horizontal plate. The output shaft of the electric linear actuator 49 is fixedly connected to the bottom of the mounting plate II 46 via a connecting plate, used to push the impeller placed on the support base 2 to one side.

[0075] After the impeller completes the weight removal operation, the output shaft of the electric linear push rod 49 drives the placement plate II 46 and the arc-shaped guard plate 48 to move to one side, pushing the weight-removed impeller out of the bearing support 2.

[0076] In another embodiment: Refer to Figure 1 and Figure 10 An improvement upon Embodiment 1 is made as follows: An inclined guide plate 50 is fixed to one side of each of the two support supports 2, located below the support plate 34. The inclined guide plate 50 has an inclination angle of 15°-30° and is fixed to the top of the protruding plate 33 by support legs. Multiple limiting baffles 51 are fixed to one side of the inclined guide plate 50 and are fixed to the top of the protruding plate 33 to limit the impeller on the inclined guide plate 50 and prevent it from slipping. After weight reduction, the impeller falls onto the inclined guide plate 50, and the limiting baffles 51 limit the impeller, facilitating its removal by subsequent workers.

[0077] refer to Figures 13-15 The algorithm for dynamic balancing and weight reduction in this embodiment is for a three-bladed impeller:

[0078] refer to Figure 13 This state is set to 0 degrees. In this state, it is installed on the balancing machine using a special fixture. The balancing machine's CNC display shows the angle as 0 degrees, and the impeller is divided into three equal parts of 120 degrees.

[0079] R is the impeller radius in mm;

[0080] ∅I represents the highest point of removal for the impeller;

[0081] ∅II is the center diameter of the three leaves in mm;

[0082] R3 is the radius of the three blades for weight removal. The path of the drill bit for weight removal is fixed at the dimension of ∅I, and the dimension of R3 is the displacement. The balancing machine rotates counterclockwise.

[0083] refer to Figure 14 When the balancing machine automatically detects that surfaces A and C are overweight, the angles displayed on surfaces A and C are within the range of 335~25°; 95~145°; 215~265°. The corresponding angle can be directly used to remove the weight. As shown in the figure, the weight at 20° on surface A is 35 grams. The length of Ob is calculated using trigonometric functions. The displacement path of the drill bit is: R3-(∅I / 2-Ob). Rotate the impeller back to 20° (i.e., 0° vertical). Move the drill bit from the origin by the dimension R3-(∅I / 2-Ob) to remove the weight. The drill bit only moves up and down from the origin. The total depth to be drilled with the selected drill bit is evaluated in advance. For example, if a ∅8 drill bit drills to a depth of 10mm and the weight is 8 grams, according to the calculation: drill to a depth of 35 / 8 / 10=25mm.

[0084] refer to Figure 15 When the balancing machine automatically detects that surfaces A and C are overweight, the angles displayed on surfaces A and C are within the range of 26~94°; 146~214°; 266~334°. It is impossible to directly place the weight on any one of the blades to remove the weight. Multiple calculations are required to determine the location and the weight removal amount at each point.

[0085] If the weight of side A or side C is displayed as 22 grams at 76°, and the area where the weight needs to be removed is displayed in the gap between the two leaves, then the weight needs to be distributed on the two adjacent leaves (1; 2), as shown in the figure, which is point k on leaf 1 and point f on leaf 2.

[0086] Calculate the position of point e on radius R based on the 76° angle. Simultaneously, calculate the positions k and f of the tangent points from point e to the adjacent R3. Using the centers h and g of two adjacent leaves, obtain three triangles: ekh; efg; efk. Calculate the lengths hk / gf / ek / ef using trigonometric functions. Calculate angles a1 and a2.

[0087] The weight removed at point k is 22*ek / kf; the drilling depth is 8 / 10*(22*ek / kf), the first blade rotates a1 degrees, and the drill bit moves up from the origin point h by a dimension of R3-(∅I / 2-Ok) to remove weight;

[0088] The weight removed at point f is 22*ef / kf; the drilling depth is 8 / 10*(22*ef / kf), the two blades rotate a1+90 degrees, and the drill bit moves up from the origin point h by a dimension of R3-(∅I / 2-Of) to remove weight.

[0089] The method of using a Roots blower impeller turning device that applies dynamic balancing to reduce weight includes the following steps:

[0090] S1. The motor drives one of the power transmission shafts 35 to rotate. The two power transmission shafts 35 are connected by transmission conveying rollers 36 and transmission belts 37 to transport the impeller to the top of the support 2. At this time, the iron movable plate 41 is aligned with the permanent magnet 45. The permanent magnet 45 generates a magnetic attraction force on the iron movable plate 41, and the magnetic attraction force is greater than the tension of the tension spring II 42. The iron movable plate 41 and the conical sleeve 43 move outward. The conical sleeve 43 disengages from the hole in the impeller. The two adjacent conical sleeves 43 release their clamping on the impeller. The impeller falls onto the support 2, and the shaft of the impeller is located between the two elastic support rubber rollers 3. The automatic feeding operation of the impeller is initially completed.

[0091] S2. The double-sided spiral screw 4 is driven to rotate by the motor. The double-sided spiral screw 4 drives two movable seats 5 to move towards each other. The two movable seats 5 clamp the two ends of the impeller shaft through the L-shaped plate I7 ​​to complete the positioning of the impeller. The rotating disk 8 abuts against one end of the impeller to reduce the friction between the impeller and the L-shaped plate I7 ​​when the impeller rotates. At this time, the synchronous transmission belt 20 is located above the impeller shaft. As the movable seats 5 continue to move, the L-shaped plate I7 ​​extends into the hydraulic guide groove 6 and injects hydraulic oil into the hydraulic cylinder 10 through the hydraulic oil supply pipe 9, pushing the hydraulic piston. As rod 11 moves downward, the hydraulic piston rod 11 drives the L-shaped plate II 14 to move downward, allowing the synchronous transmission belt 20 to rest on the outer wall of the impeller shaft. As the L-shaped plate II 14 continues to move downward, it increases the friction between the synchronous transmission belt 20 and the impeller. The cooperation between the tension spring I 17 and the sliding guide block 16 can adjust the tension of the synchronous transmission belt 20, completing the cooperation between the synchronous transmission belt 20 and the impeller. Later, when the synchronous pulley I 18 is driven to rotate by the motor, the impeller can be driven to rotate, which facilitates the measurement of the impeller overload position later. There is no need to manually place the synchronous transmission belt 20 on the impeller shaft, which greatly improves the impeller detection efficiency.

[0092] S3. When the movable seat 5 moves to the center, the movable seat 5 drives the linear rack 25 to move. The linear rack 25 meshes with the transmission gear 24, driving the rotating rod 21 and the placement plate I 22 to rotate 180°, moving the vibration detection sensor 23 above the impeller shaft. When the synchronous pulley II 19 drives the impeller to rotate through the synchronous transmission belt 20, the vibration detection sensor 23 detects the vibration of the impeller, which facilitates the detection of the overload position of the impeller and the calculation of the drilling angle and depth of the impeller.

[0093] S4. During drilling, the output shaft of the pneumatic cylinder 26 pushes the lifting worktable 27 to rise and fall, controlling the drilling machine 32 to move to the corresponding drilling height. Through the cooperation of the synchronous pulley II 19 and the synchronous transmission belt 20, the impeller is driven to rotate, controlling the drilling angle. The threaded transmission rod 29 is driven to rotate by the motor, and the threaded transmission rod 29 drives the drilling machine 32 to move towards the impeller. The distance detection sensor 31 detects the drilling depth of the drilling machine 32, thus completing the de-weighting operation of the impeller.

[0094] S5. During the deweighting process, the material collection trough 47 is used to collect debris. After the deweighting is completed, the two movable seats 5 move to the sides and reset. The output shaft of the electric linear push rod 49 drives the placement plate II 46 and the arc-shaped guard plate 48 to move to one side, pushing the deweighted impeller off the bearing support 2 and onto the inclined guide plate 50. The limiting baffle 51 limits the impeller, making it easy for the staff to remove the deweighted impeller later. The operation is fully automatic, without the need for manual loading and unloading or determining the drilling angle, height, and depth, which greatly improves production efficiency.

[0095] However, as is well known to those skilled in the art, the working principles and wiring methods of the pneumatic cylinder 26, electric linear actuator 49, vibration detection sensor 23, distance detection sensor 31, and drilling machine 32 are commonplace and belong to conventional means or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0096] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0097] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A Roots blower impeller turning device using a dynamic balancing method for weight reduction, characterized in that, include: The base plate (1) has two bearing supports (2) fixed on its top. The top of each of the two bearing supports (2) is rotatably connected to an elastic support rubber roller (3). The elastic support rubber roller (3) is used to support the impeller shaft. Two movable seats (5) are slidably disposed on the top of the base plate (1). The top of the base plate (1) is rotatably connected to a bidirectional helical screw (4) through a bearing seat. The bidirectional helical screw (4) is threadedly connected to the movable seats (5). The two movable seats (5) are respectively located on the positive and negative thread sections of the bidirectional helical screw (4). A drilling structure is provided on the top of the movable base (5) for drilling holes in the impeller to remove weight; A drive structure is provided inside the movable seat (5), the drive structure including a synchronous transmission belt (20) for driving the impeller to rotate when the two movable seats (5) are close to each other; A conveying structure is provided on the top of the base plate (1). The conveying structure includes two transmission belts (37) for automatically conveying the impeller to the elastic support rubber rollers (3) on the bearing support (2). The bidirectional spiral screw (4) drives the two movable seats (5) to move towards each other. The drive structure causes the synchronous transmission belt (20) to be fitted onto the impeller shaft and drive it to rotate. The drilling structure performs drilling and weight removal operations on the rotating impeller.

2. The Roots blower impeller turning device using dynamic balancing and weight reduction method according to claim 1, characterized in that, The drilling structure includes a pneumatic cylinder (26) fixedly embedded in the top of the movable base (5). The output shaft of the pneumatic cylinder (26) is fixedly connected to a lifting worktable (27). The lifting worktable (27) has a concave groove (28) inside. A threaded transmission rod (29) is rotatably connected in the concave groove (28). A sliding worktable (30) is slidably connected to the top of the lifting worktable (27). The sliding worktable (30) is threadedly connected to the threaded transmission rod (29). A distance detection sensor (31) is fixed on the side of the sliding worktable (30) near the bearing support (2). A drilling machine (32) is fixed on the top of the sliding worktable (30). The pneumatic cylinder (26) drives the lifting worktable (27) to rise and fall to adjust the drilling height, the threaded transmission rod (29) rotates to drive the sliding worktable (30) and the drilling machine (32) to move towards the impeller, and the distance detection sensor (31) detects the drilling depth.

3. The Roots blower impeller turning device using the dynamic balancing weight reduction method according to claim 2, characterized in that, The drive structure also includes a hydraulic guide groove (6) opened on the side of the movable seat (5) near the bearing support (2), an L-shaped plate I (7) is sealed and slidably connected in the hydraulic guide groove (6), and a rotating disk (8) is rotatably connected on the side of the L-shaped plate I (7) away from the movable seat (5), and the rotating disk (8) is used to abut against one end of the impeller shaft. The movable seat (5) has a vertical rod (12) fixed on the side near the bearing support (2). An L-shaped plate II (14) is slidably sleeved on the outer wall of the vertical rod (12). The L-shaped plate II (14) is located on the side of the L-shaped plate I (7) near the bearing support (2). An elastic spring element (13) is sleeved on the outer wall of the vertical rod (12). The two ends of the elastic spring element (13) are fixedly connected to the bottom of the L-shaped plate II (14) and the vertical rod (12) respectively, for driving the L-shaped plate II (14) to move upward and reset. The L-shaped plate II (14) is rotatably connected to a synchronous pulley I (18) and two synchronous pulleys II (19) on the side near the bearing support (2), and the synchronous transmission belt (20) cooperates with the synchronous pulley I (18) and the synchronous pulleys II (19); The drive structure also includes a hydraulic cylinder (10) fixed to the movable seat (5) near the bearing support (2). A hydraulic piston rod (11) is sealed and slidably connected inside the hydraulic cylinder (10). The bottom end of the hydraulic piston rod (11) extends to the bottom of the hydraulic cylinder (10) and is fixedly connected to the L-shaped plate II (14). The inner wall of one side of the hydraulic guide groove (6) is fixedly connected to the top of the hydraulic cylinder (10) through a hydraulic oil pipe (9). Among them, the two movable seats (5) move towards each other and clamp and position the two ends of the impeller shaft through the L-shaped plate I (7) and the rotating disk (8). The L-shaped plate I (7) slides into the hydraulic guide groove (6) and presses the hydraulic oil into the hydraulic cylinder (10) through the hydraulic oil supply pipe (9), driving the L-shaped plate II (14) to move down, so that the synchronous transmission belt (20) is tensioned and sleeved on the outer wall of the impeller shaft.

4. The Roots blower impeller turning device using the dynamic balancing weight reduction method according to claim 3, characterized in that, The top of the bearing support (2) is rotatably connected to a rotating rod (21), and a placement plate I (22) is fixed on the top of the rotating rod (21). A vibration detection sensor (23) is fixed on the bottom of the placement plate I (22). A transmission gear (24) is fixedly sleeved on the outer wall of the rotating rod (21). A linear rack (25) is fixed on one side of the movable seat (5), and the linear rack (25) meshes with the transmission gear (24). The movable seat (5) drives the linear rack (25) to rotate the transmission gear (24) and the rotating rod (21), thereby causing the placement plate I (22) and the vibration detection sensor (23) on it to rotate above the impeller to detect the vibration when the impeller rotates.

5. The Roots blower impeller turning device using the dynamic balancing weight reduction method according to claim 4, characterized in that, The conveying structure also includes a protruding plate (33) fixed to one side of the base plate (1). Two support plates (34) are fixed to the top of the protruding plate (33). Two power transmission shafts (35) are rotatably connected between the two support plates (34). The outer walls of the two power transmission shafts (35) are fixedly fitted with transmission conveying rollers (36). The two transmission conveying rollers (36) on the same side are connected by transmission belts (37). The outer walls of the two transmission belts (37) are fixed with multiple fixed mounting plates (38). The fixed mounting plates (38) on the two transmission belts (37) are positioned in pairs. The bottom of the fixed mounting plate (38) is provided with a rectangular groove (39), and a fixed connecting rod (40) is fixed in the rectangular groove (39). The outer wall of the fixed connecting rod (40) is slidably fitted with an iron movable plate (41). The outer wall of the fixed connecting rod (40) is fitted with a tension spring II (42). The two ends of the tension spring II (42) are fixedly connected to the inner wall of the rectangular groove (39) and the iron movable plate (41) respectively. A conical sleeve (43) is rotatably connected to one side of the iron movable plate (41). The two conical sleeves (43) on the fixed mounting plates (38) located at two corresponding positions are used to insert into the same hole of the same impeller to achieve clamping. Equipment mounting platforms (44) are fixed to the bottom of both support plates (34). The equipment mounting platforms (44) are located above the bearing support (2). Permanent magnets (45) are fixed to the side of the two equipment mounting platforms (44) that are close to each other. When the transmission belt (37) transports the impeller to the support (2), the magnetic attraction force generated by the permanent magnet (45) on the iron movable plate (41) overcomes the tension of the tension spring II (42), driving the iron movable plate (41) to move the conical sleeve (43) outward, thereby releasing the impeller so that it falls onto the elastic support rubber roller (3).

6. The Roots blower impeller turning device using the dynamic balancing weight reduction method according to claim 5, characterized in that, The L-shaped plate II (14) has a sliding guide groove (15) inside, and a sliding guide block (16) is slidably connected inside the sliding guide groove (15). The bottom of the sliding guide block (16) is elastically connected to the bottom inner wall of the sliding guide groove (15) by a tension spring I (17). The synchronous pulley I (18) is rotatably connected to one side of the sliding guide block (16) for automatically adjusting the tension of the synchronous transmission belt (20).

7. The Roots blower impeller turning device using dynamic balancing and weight reduction method according to claim 6, characterized in that, A placement plate II (46) is slidably connected between the two bearing supports (2). The top of the placement plate II (46) is provided with a material collection trough (47). An arc-shaped guard plate (48) is fixed to the top of the placement plate II (46). An electric linear push rod (49) is fixedly installed between the two bearing supports (2) through a horizontal plate. The output shaft of the electric linear push rod (49) is fixedly connected to the bottom of the placement plate II (46) through a connecting plate. The electric linear actuator (49) drives the placement plate II (46) to move, which can push the impeller that has completed the de-weighting operation off the bearing support (2), and the debris generated by drilling falls into the material collection tank (47).

8. The Roots blower impeller turning device using the dynamic balancing weight reduction method according to claim 7, characterized in that, An inclined guide plate (50) is fixed to one side of each of the two bearing supports (2). The inclined guide plate (50) is fixed to the top of the protruding plate (33) by a support leg. A limit baffle (51) is fixed to one side of the inclined guide plate (50). The limit baffle (51) is fixed to the top of the protruding plate (33). The ejected impeller slides down the inclined guide plate (50) and is limited by the limiting baffle (51).

9. A method for using a Roots blower impeller turning device employing a dynamic balancing method for weight reduction, applicable to the Roots blower impeller turning device employing a dynamic balancing method as described in claim 8, characterized in that... Includes the following steps: S1. Drive one of the power transmission shafts (35) to rotate by the motor. The two power transmission shafts (35) are connected by the transmission conveying roller (36) and the transmission belt (37) to transport the impeller to the top of the bearing support (2). At this time, the iron movable plate (41) and the permanent magnet (45) are aligned. The permanent magnet (45) generates a magnetic attraction force on the iron movable plate (41), and the magnetic attraction force is greater than the tension of the tension spring II (42). The iron movable plate (41) and the conical sleeve (43) move outward. The conical sleeve (43) disengages from the hole in the impeller. The two conical sleeves (43) on the fixed mounting plate (38) located at the two corresponding positions release the clamping of the impeller. The impeller falls onto the bearing support (2), and the shaft of the impeller is located between the two elastic support rubber rollers (3). The automatic feeding operation of the impeller is initially completed. S2. The double-sided spiral screw (4) is driven to rotate by the motor. The double-sided spiral screw (4) drives the two movable seats (5) to move towards each other. The two movable seats (5) clamp the two ends of the impeller shaft through the L-shaped plate I (7) to complete the positioning of the impeller. The rotating disk (8) abuts against one end of the impeller shaft to reduce the friction between the impeller shaft and the L-shaped plate I (7) when the impeller rotates. The synchronous transmission belt (20) is located above the impeller shaft at this time. As the movable seats (5) continue to move, the L-shaped plate I (7) extends into the hydraulic guide groove (6) and injects hydraulic oil into the hydraulic cylinder (10) through the hydraulic oil supply pipe (9), and pushes the hydraulic actuator. When the piston rod (11) moves down, the hydraulic piston rod (11) drives the L-shaped plate II (14) to move down, which allows the synchronous transmission belt (20) to rest on the outer wall of the impeller shaft. When the L-shaped plate II (14) continues to move down, it increases the friction of the synchronous transmission belt (20) on the impeller shaft. The cooperation between the tension spring I (17) and the sliding guide block (16) can adjust the tension of the synchronous transmission belt (20) and complete the cooperation between the synchronous transmission belt (20) and the impeller shaft. Later, when the synchronous pulley I (18) is driven to rotate by the motor, the impeller can be driven to rotate, which is convenient for measuring the overweight position of the impeller later. There is no need to manually put the synchronous transmission belt (20) on the impeller shaft, which greatly improves the impeller detection efficiency. S3. When the movable seat (5) moves to the middle, the movable seat (5) drives the linear rack (25) to move. The linear rack (25) meshes with the transmission gear (24), driving the rotating rod (21) and the placement plate I (22) to rotate 180°, moving the vibration detection sensor (23) above the impeller. When the synchronous pulley II (19) drives the impeller to rotate through the synchronous transmission belt (20), the vibration detection sensor (23) detects the vibration of the impeller, which facilitates the detection of the overload position of the impeller and the calculation of the drilling angle and depth of the impeller. S4. During drilling, the output shaft of the pneumatic cylinder (26) pushes the lifting worktable (27) to rise and fall, controlling the drilling machine (32) to move to the corresponding drilling height. Through the cooperation of the synchronous pulley II (19) and the synchronous transmission belt (20), the impeller is driven to rotate, controlling the drilling angle. The threaded transmission rod (29) is driven to rotate by the motor, and the threaded transmission rod (29) drives the drilling machine (32) to move towards the impeller. The distance detection sensor (31) detects the drilling depth of the drilling machine (32), thus completing the de-weighting operation of the impeller. S5. During the deweighting process, the material collection trough (47) is used to collect debris. After the deweighting is completed, the two movable seats (5) move to the sides and reset. The output shaft of the electric linear push rod (49) drives the placement plate II (46) and the arc-shaped guard plate (48) to move to one side, pushing the deweighted impeller off the bearing support (2) and onto the inclined guide plate (50). The limiting baffle (51) limits the impeller, making it easier for the staff to remove the deweighted impeller later.

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