Dynamic balance detector for quality detection of silicon carbide ceramic pump impeller

Abstract

The invention discloses a dynamic balance detector for quality detection of a silicon carbide ceramic pump impeller, and relates to the technical field of impeller dynamic balance detection, the dynamic balance detector comprises a machine base and a control box, one end of the machine base is fixedly connected with the control box, and the top end of the machine base is fixedly connected with a supporting block and an adjusting mechanism; one end of the adjusting mechanism is fixedly connected with a deviation rectifying mechanism, so that a counterweight clamp needing to be clamped is adjusted to a corresponding position, and the clamping mechanism can realize self-weight feeding of the counterweight clamp and clamp the counterweight clamp and an impeller together; under the synergistic effect of the clamping mechanism and the deviation correcting mechanism, the counterweight clamp and the impeller can be clamped together during rotation of the impeller, so that clamping of the counterweight clamp can be achieved without shutdown, and the dynamic balance condition of the impeller can be monitored in real time during clamping; and according to the measured dynamic balance data, the counterweight clamp is dynamically clamped on the impeller in real time, so that the dynamic balance of the impeller can be conveniently and rapidly detected and adjusted, and the overall detection efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of impeller dynamic balancing testing technology, and in particular to a dynamic balancing testing instrument for testing the quality of silicon carbide ceramic pump impellers. Background Technology

[0002] In the manufacturing and maintenance of rotating machinery, such as fans, turbines, and centrifuges, the dynamic balance performance of blades directly affects the stability, vibration level, and service life of the equipment. Due to manufacturing errors, uneven materials, or wear and corrosion during use, blades often have uneven mass distribution, which can lead to increased vibration, increased noise, or even equipment damage. Therefore, dynamic balancing and counterweight adjustment of blades using a dynamic balancing instrument is an important step in ensuring the safe and efficient operation of the equipment.

[0003] Currently, when an imbalance position of the impeller and the mass of the counterweight clamp to be added are detected by a dynamic balancing tester, the tester must be stopped first. Then, the operator manually clamps the counterweight clamp to the impeller blades or side edge, and then restarts the test. If the imbalance still exists, more counterweight clamps need to be added, and then the test is restarted. The above method cannot complete the dynamic balancing test in one go, and requires multiple restarts, which is cumbersome, time-consuming, and difficult to meet the needs of modern high-efficiency production. Therefore, to address the above problems, a dynamic balancing tester for quality detection of silicon carbide ceramic pump impellers is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers, so as to solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A dynamic balancing tester for quality testing of silicon carbide ceramic pump impellers includes a base and a control box. The control box is fixedly connected to one end of the base, and a support block and an adjusting mechanism are fixedly connected to the top of the base. A correction mechanism is fixedly connected to one end of the adjusting mechanism, and a clamping mechanism is fixedly connected to one end of the correction mechanism. A sixth motor is fixedly connected to the top of the support block, and a fixed shaft is fixedly connected to the end of the main shaft of the sixth motor. A clamping block is spirally connected to the outside of the fixed shaft, and an impeller is disposed on the outside of the fixed shaft and placed between adjacent clamping blocks. A bearing seat is fixedly connected to one end of the support block, and the bearing seat is rotatably connected to the fixed shaft through a bearing. Piezoelectric accelerometers are symmetrically arranged on both sides of the fixed shaft, and the piezoelectric accelerometers are fixedly connected to the bearing seats.

[0006] Preferably, the clamping mechanism includes a storage shell, a partition and a fixing plate are fixedly connected to the inner side of the storage shell, a cavity is formed between the partition and the storage shell, a counterweight clamp is placed inside the cavity, a guide shell is slidably connected to the inner side of the storage shell, a first electric push rod is fixedly connected to the inner side of the fixing plate, a pressure rod is fixedly connected to the end of the first electric push rod, a first guide groove for the pressure rod to slide is opened inside the storage shell, a third guide groove for the pressure rod to slide is opened inside the guide shell, and a detachably connected end cap is provided at the bottom of the cavity.

[0007] Preferably, a pressure plate is fixedly connected to one end of the material guide shell, the pressure plate is slidably connected to the storage shell, a guide shaft is slidably connected to the inner side of the pressure plate, one end of the guide shaft is fixedly connected to the material guide shell, a fixing block is fixedly connected to the other end of the guide shaft, a first spring is provided on the outer side of the guide shaft, and the two ends of the first spring are fixedly connected to the pressure plate and the material guide shell respectively, a side block is fixedly connected to one end of the partition plate, a second spring is fixedly connected to one end of the side block, and the other end of the second spring is fixedly connected to the storage shell, and a second guide groove for the pressure plate to slide is opened on the inner side of the storage shell.

[0008] Preferably, a first guide plate is fixedly connected to the inner side of the storage shell, a second guide plate is fixedly connected to one end of the first guide plate, a fourth guide groove for sliding of the pressure rod is provided on the inner side of the second guide plate, a limit plate is rotatably connected to the inner side of the storage shell, and a torsion spring is provided between the limit plate and the storage shell.

[0009] Preferably, one end of the storage shell is fixedly connected to a connecting shell, and the other end of the connecting shell is fixedly connected to an air inlet shell.

[0010] Preferably, the clamping mechanism further includes a first motor, a connecting plate is fixedly connected to the end of the main shaft of the first motor, a first gear ring is rotatably connected to the inner side of the connecting plate, and the storage shell passes through the first gear ring and is fixedly connected to the first gear ring. A fixing frame is fixedly connected to the top of the connecting plate, a second motor is fixedly connected to one end of the fixing frame, and a first gear is fixedly connected to the end of the main shaft of the second motor, and the first gear meshes with the first gear ring.

[0011] Preferably, the correction mechanism includes a third motor, a conductive slip ring fixedly connected to the end of the main shaft of the third motor, a support base fixedly connected to the fixed part of the conductive slip ring, the support base fixedly connected to the adjustment mechanism, a connecting cylinder fixedly connected to the rotating part of the conductive slip ring, a rotating ring rotatably connected to the outer side of the connecting cylinder, the rotating ring fixedly connected to a first motor, a connecting plate fixedly connected to one end of the connecting cylinder, a fourth motor fixedly connected to one end of the connecting plate, a second gear fixedly connected to the end of the main shaft of the fourth motor, a second gear meshing with a second toothed ring at one end of the second gear, and the second toothed ring fixedly connected to the rotating ring, and retaining rings fixedly connected to both sides of the connecting cylinder, and the retaining rings on both sides are rotatably connected to the rotating ring and the second toothed ring respectively.

[0012] Preferably, a second electric push rod and a protective shell are fixedly connected at the position opposite to the first motor of the rotating ring, a counterweight is fixedly connected to the end of the second electric push rod, and the protective shell covers the outside of the second electric push rod and the counterweight.

[0013] Preferably, the adjustment mechanism includes two horizontal plates fixedly connected to the base. One end of one of the horizontal plates is fixedly connected to a fifth motor. The end of the main shaft of the fifth motor is fixedly connected to a screw. A slider is helically connected to the outside of the screw, and the slider is fixedly connected to a third motor. A guide rail is slidably connected to the inside of the slider, and the guide rail is fixedly connected to the horizontal plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: A dynamic balancing instrument for quality inspection of silicon carbide ceramic pump impellers is provided, comprising a clamping mechanism, a correction mechanism, and an adjustment mechanism. The correction and adjustment mechanisms can adjust the counterweight clamp to the corresponding position according to the unbalanced position of the blades. The clamping mechanism can load the counterweight clamp by its own weight and clamp the counterweight clamp to the impeller. With the coordinated action of the clamping and correction mechanisms, the counterweight clamp can be clamped to the impeller while it is rotating, thus achieving counterweight clamping without stopping the machine. At the same time, the dynamic balance of the impeller can be monitored in real time. Then, based on the measured dynamic balance data, the counterweight clamp is dynamically clamped to the impeller in real time, which facilitates rapid detection and adjustment of the impeller's dynamic balance and improves the overall detection efficiency. Attached Figure Description

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Figure 1 This is a schematic diagram of the overall structure of a dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers according to the present invention.

[0017] Figure 2 This is a schematic diagram of the clamping block installation structure of a dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers according to the present invention.

[0018] Figure 3 This is a schematic diagram of the correction mechanism of a dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers according to the present invention.

[0019] Figure 4 This is a partial exploded view of the off-center installation structure of the dynamic balancing testing instrument for detecting the quality of silicon carbide ceramic pump impellers according to the present invention.

[0020] Figure 5 This is a schematic diagram of the installation structure of the adjustment mechanism of a dynamic balancing tester for detecting the quality of a silicon carbide ceramic pump impeller according to the present invention.

[0021] Figure 6 This is a schematic diagram of the installation structure of the air inlet casing of a dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers according to the present invention.

[0022] Figure 7 This is an exploded structural diagram of the clamping mechanism of a dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers according to the present invention.

[0023] Figure 8 This is a schematic diagram of the internal installation structure of the storage shell of a dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers according to the present invention.

[0024] Figure 9 This is a schematic diagram of the internal side view of the storage shell of a dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers according to the present invention.

[0025] Figure 10 This is a schematic diagram of the mounting structure of the fixing block of a dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers according to the present invention.

[0026] Figure 11 This is a schematic diagram of the mounting structure of the pressure bar of a dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers according to the present invention.

[0027] Figure 12 This is a schematic diagram of the connecting shell of a dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers according to the present invention.

[0028] Figure 13This is a schematic diagram of the installation structure of the second guide plate of a dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers according to the present invention.

[0029] Figure 14 This is a schematic diagram of the limiting plate of a dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers according to the present invention.

[0030] In the diagram: 1. Clamping mechanism; 101. First motor; 102. Connecting plate; 103. Fixing frame; 104. First gear; 105. First gear ring; 106. Storage shell; 10601. First guide groove; 10602. Second guide groove; 107. Partition plate; 108. Material guide shell; 10801. Third guide groove; 109. Second motor; 110. Pressure plate; 111. First spring; 112. Guide shaft; 113. Fixing block; 114. Second spring; 115. First guide plate; 116. Second guide plate; 11601. Fourth guide groove; 117. First electric push rod; 118. Pressure rod; 119. Fixing plate; 120. Limiting plate; 121. Torsion spring; 122. Air inlet shell; 123. Connecting shell; 124. End cap; 125. Side block; 2. Correction mechanism; 201. Third motor; 202. Conductive slip ring; 203. Support base; 204. Connecting cylinder; 205. Retaining ring; 206. Rotary ring; 207. Second gear ring; 208. Connecting plate; 209. Fourth motor; 210. Second gear; 211. Protective shell; 212. Second electric push rod; 213. Counterweight; 3. Adjustment mechanism; 301. Fifth motor; 302. Horizontal plate; 303. Screw; 304. Guide rail; 305. Slider; 4. Base; 5. Control box; 6. Support block; 7. Sixth motor; 8. Fixed shaft; 9. Clamping block; 10. Impeller; 11. Counterweight clamp; 12. Piezoelectric accelerometer; 13. Bearing housing. Detailed Implementation

[0031] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the specific embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product size. At the same time, all precision instruments such as lead screws, screws, gears, racks, etc. are provided with protective structures such as protective covers. As these are common knowledge, they are not described in detail in the specification. It is understandable for those skilled in the art that some common structures and their descriptions may be omitted in the drawings. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] To make the technical means, creative features, objectives, and effects of this invention easier to understand, it should be noted in the description of this invention that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The invention will be further described below in conjunction with specific embodiments.

[0033] Example like Figures 1-14 As shown, a dynamic balancing tester for quality testing of silicon carbide ceramic pump impellers includes a base 4 and a control box 5. The control box 5 is fixedly connected to one end of the base 4. A support block 6 and an adjusting mechanism 3 are fixedly connected to the top of the base 4. A correction mechanism 2 is fixedly connected to one end of the adjusting mechanism 3, and a clamping mechanism 1 is fixedly connected to one end of the correction mechanism 2. A sixth motor 7 is fixedly connected to the top of the support block 6. A fixed shaft 8 is fixedly connected to the end of the main shaft of the sixth motor 7. A clamping block 9 is screwed to the outside of the fixed shaft 8. An impeller 10 is provided on the outside of the support block 8. The impeller 10 is placed between adjacent clamping blocks 9. One end of the support block 6 is fixedly connected to a bearing seat 13. The bearing seat 13 is rotatably connected to the fixed shaft 8 through a bearing. Piezoelectric acceleration sensors 12 are symmetrically arranged on both sides of the fixed shaft 8, and the piezoelectric acceleration sensors 12 are fixedly connected to the bearing seat 13. The impeller 10 can be fixed on the outside of the fixed shaft 8 through the two clamping blocks 9. When performing dynamic balance test on the impeller 10, the sixth motor 7 will rotate the impeller 10 through the fixed shaft 8. The control box 5 has a built-in automatic control system, which adopts the mature industrial PLC+HMI human-machine interface solution. It realizes the timing control of clamping mechanism 1, correction mechanism 2 and adjustment mechanism 3 through pre-configured programs. Combined with electric drive, motor actuation, multiple types of sensors (position, force, vision, etc.) and feedback network, it forms a complete automation solution. At present, mainstream brands such as Siemens and Mitsubishi can provide standardized hardware products and supporting software platforms. Users only need to develop programs according to specific process requirements to quickly implement control functions. The inner side of the control box 5 is equipped with a dynamic balance detection system for the impeller 10 (this is existing technology and will not be described in detail here). The detection principle of this system is as follows: the piezoelectric accelerometer 12 is rigidly mounted on the bearing seat 13 of the fixed shaft 8 that supports the rotation of the impeller 10 to directly and without distortion capture vibration. They are installed in pairs to measure the vibration in the horizontal (X) and vertical (Y) directions respectively. When the impeller 10 rotates, the piezoelectric accelerometer measures its imbalance (including magnitude and phase). Then, the imbalance force is counteracted by adding or removing mass (counterweight) at a specific position.

[0034] As a further improvement to the present invention, such as Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, the clamping mechanism 1 includes a storage shell 106. A partition 107 and a fixing plate 119 are fixedly connected to the inner side of the storage shell 106. A chamber is formed between the partition 107 and the storage shell 106. A counterweight clamp 11 is placed inside the chamber. The counterweight clamp 11 is U-shaped and has the function of clamping together with the blades or side edges of the impeller 10. The counterweight clamp 11 is existing technology and will not be described in detail here. The number of storage shells 106 is at least four, and each storage shell... The weights of the counterweight clips 11 stored in the chambers inside the storage shell 106 vary. For example, for small impellers 10 with a diameter of less than 200 mm, the weights of the counterweight clips 11 inside each storage shell 106 are set to 0.1 g, 0.2 g, 0.5 g, and 1.0 g, respectively; for medium-sized impellers 10 with a diameter of 200-500 mm, the weights of the counterweight clips 11 inside each storage shell 106 are set to 1.0 g, 2.0 g, 5.0 g, and 10.0 g, respectively. A guide shell 108 is slidably connected to the inner side of the storage shell 106, and a first electric push rod 117 is fixedly connected to the inner side of the fixing plate 119. The opening of the guide shell 108 is funnel-shaped. When the counterweight clamp 11 moves below the first electric push rod 117, the first electric push rod 117 can push the counterweight clamp 11 through the funnel opening to the inner side of the guide shell 108. The size of the guide shell 108 is compatible with the counterweight clamp 11. The first electric push rod 117 is a multi-stage electric push rod, which facilitates increasing the pushing distance of the first electric push rod 117. The end of the first electric push rod 117 is fixedly connected to a pressure rod 118. The inner side of the storage shell 106 is provided with a first guide groove 10601 for the pressure rod 118 to slide, and the inner side of the guide shell 108 is provided with a third guide groove 10801 for the pressure rod 118 to slide. Under the guidance of the first guide groove 10601 and the third guide groove 10801, when the first electric push rod 117 pushes the counterweight clamp 11 to move, it can also slide the pressure rod 118 downward normally, ensuring that the first electric push rod 117 can clamp the counterweight clamp 11 together with the impeller 10. The bottom of the chamber is provided with a detachable end cover 124. The end cover 124 can be connected to the storage shell 106 by snap-fit ​​or bolt connection, which facilitates the subsequent addition of the counterweight clamp 11 to the inside of the chamber.

[0035] As a further improvement to the present invention, such as Figure 8 , Figure 9 and Figure 10 As shown, a pressure plate 110 is fixedly connected to one end of the guide shell 108. The pressure plate 110 is slidably connected to the storage shell 106. A second guide groove 10602 is provided on the inner side of the storage shell 106 for the pressure plate 110 to slide. The second guide groove 10602 can ensure that when the first electric push rod moves the pressure rod 118 downward, the pressure rod 118 can slide the pressure plate 110 downward. A guide shaft 112 is slidably connected to the inner side of the pressure plate 110, and one end of the guide shaft 112 is fixedly connected to the guide shell 108. A fixing block 113 is fixedly connected to the other end of the guide shaft 112. A first spring 111 is provided on the outer side of the guide shaft 112, and both ends of the first spring 111 are fixedly connected to the pressure plate 110 and the guide shell 108, respectively. A side block 125 is fixedly connected to one end of the partition plate 107, and a second spring 114 is fixedly connected to one end of the side block 125. The other end of the second spring 114 is fixedly connected to the storage shell 106. The first spring 111 provides a downward pushing force to the guide shell 108, and under the limiting action of the fixing block 113, it can prevent the guide shaft 112 from being stopped. 2. Separate from the pressure plate 110; the second spring 114 gives the guide shell 108 an upward pulling force, and the first spring 111 gives the guide shell 108 a greater pushing force than the second spring 114 gives the guide shell 108. When the guide shell 108 is inside the storage shell 106, the fixing block 113 can be attached to the pressure plate 110. At the same time, it can ensure that the guide shell 108 is normally inside the storage shell 106 under the cooperation of the first spring 111 and the second spring 114, so that the guide shell 108 will not touch the counterweight clamp 11 under the pulling force of the second spring 114, and the counterweight clamp 11 can slide normally to the bottom of the first electric push rod 117. When the appropriate counterweight clamp 11 is moved to the position where the counterweight clamp 11 needs to be clamped on the impeller 10 under the cooperation of the correction mechanism 2 and the adjustment mechanism 3, the end of the first electric push rod 117 moves closer to the impeller 10, and the first electric push rod 117 also moves the pressure rod 118 synchronously closer to the impeller 10. The end of the first electric push rod 117 pushes the counterweight clamp 11, so that the counterweight clamp 11 passes over the adjacent limit plate 120 and enters the inner side of the guide shell 108. The distance between the bottom end face of the pressure rod 118 and the bottom end face of the first electric push rod 117 is greater than the distance between the storage shell 106 and the top end face of the first toothed ring 105, ensuring that the first electric push rod 117 is not interfered with by the pressure rod 118 and the first toothed ring 105, so that the first electric push rod 117 can push the counterweight clamp 11 to be completely engaged with the blade or edge of the impeller 10. As soon as the counterweight clamp 11 enters the inner side of the guide shell 108, the first electric push rod 117 continues to move the counterweight clamp 11 downwards. The pressure rod 118 also contacts the pressure plate 110 and slides it downwards along the storage shell 106. Then, the pressure plate 110 overcomes the tension of the second spring 114 on the guide shell 108 via the first spring 111, causing the guide shell 108 and the counterweight clamp 11 to move synchronously towards the impeller 10. When the guide shell 108 abuts against the blades or edge of the impeller 10, the guide shell 108 stops moving. Then, the first electric push rod 117 causes the pressure rod 118 and the pressure plate 110 to overcome the pushing force of the first spring 111 on the pressure plate 110, causing the pressure plate 110 to slide along the guide shaft 112. The first electric push rod 117 continues to move the counterweight clamp 11 closer to the impeller 10, so that the counterweight clamp 11 engages with the blades or edge of the impeller 10. Under the coordinated action of the clamping mechanism 1 and the correction mechanism 2, the counterweight clamp 11 can be engaged with the blades or edge of the impeller 10 while the impeller 10 is rotating, without the need for manual shutdown to clamp the counterweight clamp 11. This allows the counterweight clamp 11 to be clamped without stopping the machine, and the dynamic balance of the impeller 10 can be monitored in real time during clamping. Then, the counterweight clamp 11 is dynamically clamped to the impeller 10 in real time based on the measured dynamic balance data, which facilitates the rapid detection and adjustment of the dynamic balance of the impeller 10 and improves the overall detection efficiency.

[0036] As a further improvement to the present invention, such as Figure 8 , Figure 9 and Figure 13As shown, a first guide plate 115 is fixedly connected to the inner side of the storage shell 106, and a second guide plate 116 is fixedly connected to one end of the first guide plate 115. The first guide plate 115 is a straight plate, and the angle between the first guide plate 115 and the side wall of the storage shell 106 is 50-70°. The second guide plate 116 is an arc plate with an arc value of 30-45°. At the same time, the first guide plate 115 and the second guide plate 116 are tangent. When the correction mechanism 2 drives the clamping mechanism 1 to rotate rapidly, under the action of centrifugal force, the counterweight clamp 11 in the chamber will slide along the first guide plate 115 towards the second guide plate 116. When the counterweight clamp 11 slides to the side of the second guide plate 116, since the second guide plate 116 is an arc plate, under the action of centrifugal force, the center line of the counterweight clamp 11 will gradually align with the vertical center line of the second guide plate 116, thereby facilitating the first electric push rod 117 to push the counterweight clamp 11 to move. The inner side of the second guide plate 116 is provided with a fourth guide groove 11601 for the pressure rod 118 to slide. Under the guidance of the fourth guide groove 11601, the pressure rod 118 can easily pass over the second guide plate 116.

[0037] A limiting plate 120 is rotatably connected to the inner side of the storage shell 106. A torsion spring 121 is provided between the limiting plate 120 and the storage shell 106. The torsion spring 121 provides a counterclockwise torque to the limiting plate 120. The limiting plate 120 plays an auxiliary adjustment role for the counterweight clamp 11. When the counterweight clamp 11 slides along the first guide plate 115 to the side of the second guide plate 116, the corner of the counterweight clamp 11 will also contact the limiting plate 120. The limiting plate 120 plays a guiding and limiting role for the corner of the counterweight clamp 11. Under the cooperation of the limiting plate 120, the second guide plate 116 and the centrifugal force, the center line of the counterweight clamp 11 will gradually and quickly align with the vertical center line of the second guide plate 116.

[0038] As a further improvement to the present invention, such as Figure 3 , Figure 6 , Figure 7 and Figure 12 As shown, a connecting shell 123 is fixedly connected to one end of the storage shell 106, and an air inlet shell 122 is fixedly connected to the other end of the connecting shell 123. An air inlet communicating with the connecting shell 123 is opened on the side of the storage shell 106. The air inlet shell 122 is arc-shaped, and the center of the air inlet shell 122 is the same as the rotation center of the connecting cylinder 204 inside the correction mechanism 2. When the air inlet shell 122 and the connecting cylinder 204 rotate synchronously, it is convenient for gas to enter the inside of the air inlet shell 122. After the gas leaves the connecting shell 123, it blows towards the side of the counterweight clamp 11, forming a lateral thrust to assist the counterweight clamp 11 in sliding. At the same time, the higher the rotation speed, the stronger the airflow thrust, forming an adaptive drive. Through the cooperation of centrifugal force drive and airflow drive, the stability and adaptability of automatic feeding of the counterweight clamp 11 are greatly improved. By combining centrifugal force drive and airflow drive, the counterweight clamp 11 is automatically fed along the guide surfaces of the first guide plate 115 and the second guide plate 116, avoiding the defects of traditional clamping that rely on complex pneumatic / electric mechanisms, and significantly improving mechanical structure simplification and automation efficiency.

[0039] As a further improvement to the present invention, such as Figure 6 and Figure 7 As shown, the clamping mechanism 1 also includes a first motor 101. A connecting plate 102 is fixedly connected to the end of the main shaft of the first motor 101. A first gear ring 105 is rotatably connected to the inner side of the connecting plate 102, and a storage shell 106 passes through and is fixedly connected to the first gear ring 105. A fixing frame 103 is fixedly connected to the top of the connecting plate 102. A second motor 109 is fixedly connected to one end of the fixing frame 103. A first gear 104 is fixedly connected to the end of the main shaft of the second motor 109. 104 meshes with the first gear ring 105; since the weight of the counterweight clip 11 inside the storage shell 106 at different positions is different, when the control box 5 determines the unbalanced position of the impeller 10 and the weight of the counterweight clip 11 to be added, the first motor 101 will rotate the connecting plate 102, so that the connecting plate 102 will rotate the storage shell 106 around the main shaft of the first motor 101 through the first gear ring 105, so that the storage shell 106 with the appropriate weight counterweight clip 11 will rotate to a position close to the impeller 10; When it is necessary to clamp the counterweight clamp 11 onto the blades of the impeller 10, the corresponding second motor 109 drives the storage shell 106 to rotate around the vertical center line of the first gear ring 105 via the first gear 104, so that the storage shell 106 with the corresponding counterweight clamp 11 is parallel to the blades of the impeller 10, thereby facilitating the clamping of the counterweight clamp 11 with the blades of the impeller 10; when it is necessary to clamp the counterweight clamp 11 onto the side edge of the impeller 10, the storage shell 106 with the corresponding counterweight clamp 11 is made parallel to the side edge of the impeller 10, thereby facilitating the clamping of the counterweight clamp 11 with the side edge of the impeller 10.

[0040] As a further improvement to the present invention, such as Figure 3 and Figure 4As shown, the correction mechanism 2 includes a third motor 201. A conductive slip ring 202 is fixedly connected to the end of the main shaft of the third motor 201. A support base 203 is fixedly connected to the fixed part of the conductive slip ring 202. The support base 203 is fixedly connected to the adjustment mechanism 3. A connecting cylinder 204 is fixedly connected to the rotating part of the conductive slip ring 202. The fixed part of the conductive slip ring 202 is connected to an external wire. The conductive slip ring 202 ensures that while the connecting cylinder 204 rotates, it can also provide normal power to other rotating electrical equipment. The conductive slip ring 202 is existing technology and will not be described further here; simultaneously, the width of the connecting cylinder 204 is greater than the width of the impeller 10, and the diameter of the connecting cylinder 204 is greater than the diameter of the impeller 10, allowing the impeller 10 to enter the inner side of the connecting cylinder 204, thereby allowing the storage shell 106, carrying the counterweight clamp 11, to move to different positions on the side of the impeller 10; a rotating ring 206 is rotatably connected to the outer side of the connecting cylinder 204, and the rotating ring 206 is fixedly connected to the first motor 101; one end of the connecting cylinder 204 is fixedly connected to a connecting ring 206. A connecting plate 208 is attached to one end of a fourth motor 209. A second gear 210 is fixedly connected to the end of the main shaft of the fourth motor 209. One end of the second gear 210 meshes with a second gear ring 207, which is fixedly connected to a rotating ring 206. During the synchronous rotation of the storage shell 106 and the impeller 10, the fourth motor 209 can drive the rotating ring 206 to rotate through the interaction of the second gear 210 and the second gear ring 207, thus enabling the rotating ring 206 to rotate simultaneously with the impeller 106. The synchronous rotation and independent rotation of the impeller 10 can be precisely matched with the phase of the impeller 10, so that the rotating ring 206 can rotate the storage shell 106 to the unbalanced position of the impeller 10 through the first motor 101, the connecting plate 102, and the first toothed ring 105. Both sides of the connecting cylinder 204 are fixedly connected with retaining rings 205, and the retaining rings 205 on both sides are rotatably connected to the rotating ring 206 and the second toothed ring 207 respectively. The retaining rings 205 can prevent the rotating ring 206 and the second toothed ring 207 from falling off the surface of the connecting cylinder 204. When the impeller 10 is being dynamically balanced, the third motor 201 will drive the connecting cylinder 204 to rotate synchronously through the conductive slip ring 202. At the same time, the connecting cylinder 204 will also drive the storage shell 106 to rotate around the horizontal center line of the connecting cylinder 204 through the first motor 101, the connecting plate 102, and the first toothed ring 105, so that the storage shell 106 will also rotate synchronously with the impeller 10. After the control box 5 determines the unbalanced position of the impeller 10 and the weight of the counterweight clamp 11 to be clamped, the storage shell 106 with the appropriate weight counterweight clamp 11 will be rotated to the unbalanced position of the impeller 10 under the combined action of the adjusting mechanism 3, the third motor 201, the fourth motor 209, and the first motor 101. Then the counterweight clamp 11 can be clamped together with the impeller 10.

[0041] As a further improvement to the present invention, such as Figure 3 and Figure 4As shown, a second electric push rod 212 and a protective shell 211 are fixedly connected to the rotating ring 206 opposite to the first motor 101. A counterweight 213 is fixedly connected to the end of the second electric push rod 212. The protective shell 211 covers the outside of the second electric push rod 212 and the counterweight 213. The protective shell 211 can protect the counterweight 213, preventing it from falling off and injuring workers. Furthermore, a counterweight 213 of appropriate weight can be selected based on the weight of the clamping mechanism 1 itself. The push rod 212 can adjust the position of the counterweight 213. When the connecting cylinder 204 rotates, the centrifugal force of the clamping mechanism 1 is canceled out by the mutual cooperation of the connecting plate 208, the fourth motor 209, the second gear 210, the protective shell 211, the second electric push rod 212 and the counterweight 213, thereby eliminating the unbalanced vibration of the connecting cylinder 204.

[0042] As a further improvement to the present invention, such as Figure 1 and Figure 5 As shown, the adjustment mechanism 3 includes a horizontal plate 302 fixedly connected to the base 4, and there are two horizontal plates 302. One end of one horizontal plate 302 is fixedly connected to a fifth motor 301. The end of the main shaft of the fifth motor 301 is fixedly connected to a screw 303. The outer side of the screw 303 is spirally connected to a slider 305, and the slider 305 is fixedly connected to a third motor 201. The inner side of the slider 305 is slidably connected to a guide rail 304, and the guide rail 304 is fixedly connected to the horizontal plate 302. When it is necessary to adjust the position of the storage shell 106 horizontally according to the unbalanced position of the impeller 10, the fifth motor 301 drives the screw 303 to rotate spirally inside the slider 305, so that the slider 305 moves horizontally along the guide rail 304, thereby causing the slider 305 to move the storage shell 106 inside the correction mechanism 2 and the clamping mechanism 1 horizontally, so that the storage shell 106 moves to the appropriate position. Meanwhile, since the counterweights 11 are very light (0.1g, 0.2g, 0.5g, 1.0g, 2.0g, 5.0g and 10.0g), while the entire clamping mechanism 1 has a large mass (e.g., several kilograms), the mass change caused by reducing a few counterweights 11 is negligible relative to the huge inertia of the entire rotating system. The imbalance introduced by this small mass change is far less than the inherent vibration noise of the system, or is still within the allowable range of the dynamic balance accuracy level. In this case, it can be ignored and no real-time compensation is required.

[0043] The above are preferred embodiments of the present invention. The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from the scope of protection of the present invention. All such changes and modifications fall within the scope of protection of the present invention as defined by the appended claims and their equivalents.

Claims

1. A dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers, comprising a base (4) and a control box (5), characterized in that: One end of the base (4) is fixedly connected to a control box (5). The top of the base (4) is fixedly connected to a support block (6) and an adjustment mechanism (3). One end of the adjustment mechanism (3) is fixedly connected to a correction mechanism (2). One end of the correction mechanism (2) is fixedly connected to a clamping mechanism (1). The top of the support block (6) is fixedly connected to a sixth motor (7). The end of the main shaft of the sixth motor (7) is fixedly connected to a fixed shaft (8). The outside of the fixed shaft (8) is spirally connected to a clamping block (9). An impeller (10) is provided on the outside of the fixed shaft (8). The impeller (10) is placed between adjacent clamping blocks (9). One end of the support block (6) is fixedly connected to a bearing seat (13). The bearing seat (13) is rotatably connected to the fixed shaft (8) through a bearing. Piezoelectric acceleration sensors (12) are symmetrically arranged on both sides of the fixed shaft (8). The piezoelectric acceleration sensors (12) are fixedly connected to the bearing seat (13).

2. The dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers according to claim 1, characterized in that: The clamping mechanism (1) includes a storage shell (106), a partition (107) and a fixing plate (119) are fixedly connected to the inner side of the storage shell (106), a chamber is formed between the partition (107) and the storage shell (106), a counterweight clamp (11) is placed inside the chamber, a guide shell (108) is slidably connected to the inner side of the storage shell (106), a first electric push rod (117) is fixedly connected to the inner side of the fixing plate (119), a pressure rod (118) is fixedly connected to the end of the first electric push rod (117), a first guide groove (10601) for the pressure rod (118) to slide is opened inside the storage shell (106), a third guide groove (10801) for the pressure rod (118) to slide is opened inside the guide shell (108), and a detachably connected end cap (124) is provided at the bottom of the chamber.

3. The dynamic balancing tester for detecting the quality of silicon carbide ceramic pump impellers according to claim 2, characterized in that: One end of the feed guide shell (108) is fixedly connected to a pressure plate (110), the pressure plate (110) is slidably connected to the storage shell (106), the inner side of the pressure plate (110) is slidably connected to a guide shaft (112), one end of the guide shaft (112) is fixedly connected to the feed guide shell (108), the other end of the guide shaft (112) is fixedly connected to a fixing block (113), a first spring (111) is provided on the outer side of the guide shaft (112), and both ends of the first spring (111) are fixedly connected to the pressure plate (110) and the feed guide shell (108) respectively. One end of the partition plate (107) is fixedly connected to a side block (125), one end of the side block (125) is fixedly connected to a second spring (114), and the other end of the second spring (114) is fixedly connected to the storage shell (106). The inner side of the storage shell (106) is provided with a second guide groove (10602) for the pressure plate (110) to slide.

4. A dynamic balancing tester for detecting the quality of a silicon carbide ceramic pump impeller according to claim 2, characterized in that: The storage shell (106) is fixedly connected to a first guide plate (115), and a second guide plate (116) is fixedly connected to one end of the first guide plate (115). The second guide plate (116) has a fourth guide groove (11601) for sliding of the pressure rod (118) on its inner side. A limit plate (120) is rotatably connected to the inner side of the storage shell (106), and a torsion spring (121) is provided between the limit plate (120) and the storage shell (106).

5. A dynamic balancing tester for detecting the quality of a silicon carbide ceramic pump impeller according to claim 2, characterized in that: One end of the storage shell (106) is fixedly connected to a connecting shell (123), and the other end of the connecting shell (123) is fixedly connected to an air inlet shell (122).

6. A dynamic balancing tester for detecting the quality of a silicon carbide ceramic pump impeller according to claim 2, characterized in that: The clamping mechanism (1) further includes a first motor (101), the end of the main shaft of the first motor (101) is fixedly connected to a connecting disk (102), the inner side of the connecting disk (102) is rotatably connected to a first gear ring (105), and the storage shell (106) passes through the first gear ring (105) and is fixedly connected to the first gear ring (105). The top end of the connecting disk (102) is fixedly connected to a fixing frame (103), one end of the fixing frame (103) is fixedly connected to a second motor (109), the end of the main shaft of the second motor (109) is fixedly connected to a first gear (104), and the first gear (104) meshes with the first gear ring (105).

7. A dynamic balancing tester for detecting the quality of a silicon carbide ceramic pump impeller according to claim 1, characterized in that: The correction mechanism (2) includes a third motor (201), a conductive slip ring (202) is fixedly connected to the end of the main shaft of the third motor (201), a support base (203) is fixedly connected to the fixed part of the conductive slip ring (202), the support base (203) is fixedly connected to the adjustment mechanism (3), a connecting cylinder (204) is fixedly connected to the rotating part of the conductive slip ring (202), a rotating ring (206) is rotatably connected to the outside of the connecting cylinder (204), the rotating ring (206) is fixedly connected to the first motor (101), and the connecting cylinder (204) is rotatably connected to the outside of the connecting cylinder (204). One end of the connecting cylinder (204) is fixedly connected to a connecting plate (208), and one end of the connecting plate (208) is fixedly connected to a fourth motor (209). The end of the main shaft of the fourth motor (209) is fixedly connected to a second gear (210). One end of the second gear (210) is meshed with a second gear ring (207), and the second gear ring (207) is fixedly connected to a rotating ring (206). Both sides of the connecting cylinder (204) are fixedly connected to retaining rings (205), and the retaining rings (205) on both sides are rotatably connected to the rotating ring (206) and the second gear ring (207) respectively.

8. A dynamic balancing tester for detecting the quality of a silicon carbide ceramic pump impeller according to claim 7, characterized in that: The rotating ring (206) is fixedly connected to the second electric push rod (212) and the protective shell (211) at the position opposite to the first motor (101). The end of the second electric push rod (212) is fixedly connected to the counterweight (213). The protective shell (211) covers the outside of the second electric push rod (212) and the counterweight (213).

9. A dynamic balancing tester for detecting the quality of a silicon carbide ceramic pump impeller according to claim 1, characterized in that: The adjustment mechanism (3) includes a horizontal plate (302) fixedly connected to the base (4), and there are two horizontal plates (302). One end of the horizontal plate (302) is fixedly connected to a fifth motor (301). The end of the main shaft of the fifth motor (301) is fixedly connected to a screw (303). The outer side of the screw (303) is spirally connected to a slider (305), and the slider (305) is fixedly connected to a third motor (201). The inner side of the slider (305) is slidably connected to a guide rail (304), and the guide rail (304) is fixedly connected to the horizontal plate (302).

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