Impeller dynamic balance testing device

Abstract

The invention relates to the technical field of balance testing, one embodiment of the invention provides an impeller dynamic balance testing device which comprises a base and a separation mechanism, guide grooves are symmetrically formed in the left side and the right side of the upper surface of the base, and the separation mechanism is arranged in the middle of the upper surface of the base. A to-be-detected impeller is installed in the middle of the balance detection device by starting the separation mechanism forwards and backwards, the impeller is fixed by the clamping mechanism, the balance of the impeller is detected by adopting the debugging and detection steps of the balance detection device at the moment, and the offset distance detected through the balance line of the impeller and the central axis of the impeller subsequently is achieved. By adjusting the position of the rotating shaft of the follow-up impeller installed on the production equipment, the impeller with the balance line deviating from the central axis is prevented from being directly abandoned, the utilization efficiency of the impeller is improved, and the problem that in the prior art, due to self-abrasion of a balance testing device, the impeller balance testing detection result does not conform to the reality is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of balance testing technology, specifically to an impeller dynamic balance testing device. Background Technology

[0002] During the impeller dynamic balancing test, the accuracy and stability of the testing device directly affect the accuracy of the test results, which in turn affects the smooth operation and service life of the impeller in actual applications.

[0003] However, existing impeller dynamic balancing testing devices lack an effective debugging and calibration mechanism for their own condition before use. This makes them susceptible to factors such as wear and tear on the testing equipment and installation errors, thus reducing testing accuracy. In addition, traditional testing methods mainly focus on the overall imbalance of the impeller and fail to effectively identify the offset distance between the impeller balance line and the central axis. Therefore, it is impossible to correct the impeller, resulting in the direct rejection of unbalanced impellers and a lower utilization rate. At this point, existing equipment judges whether the impeller is balanced by the vibration of the impeller during rotation. However, slight vibrations are difficult to detect, causing unqualified impellers to pass the test, resulting in reduced equipment quality and shortened lifespan. Summary of the Invention

[0004] To overcome the above-mentioned defects, the embodiments of this disclosure provide an impeller dynamic balancing test device, which solves the technical problem in the prior art where the balancing test device wears itself, causing the impeller balancing test results to be inconsistent with the actual situation.

[0005] To achieve the above objectives, this application adopts the following technical solution: a dynamic balancing testing device for an impeller, comprising: The base has guide grooves symmetrically formed on the left and right sides of its upper surface; A separation mechanism is disposed in the middle of the upper surface of the base; Two sets of mounting sleeves are symmetrically and slidably fitted into the middle of two sets of guide grooves; Two sets of lever mechanisms are symmetrically arranged in the middle of two sets of mounting sleeves; Multiple sets of hydraulic mechanisms are symmetrically arranged on the front and rear sides of the top surface of the two sets of mounting sleeves; Two sets of eccentric mechanisms are symmetrically arranged on the upper part of the two sets of lever mechanisms; A main spindle mechanism, wherein the main spindle mechanism is located in the middle of two sets of eccentric mechanisms; Two sets of clamping mechanisms are symmetrically arranged on the left and right sides of the main spindle mechanism.

[0006] Preferably, the separation mechanism includes a mounting plate, which is fixedly installed in the middle of the upper surface of the base. Hydraulic rods are symmetrically fixedly installed in the middle of the left and right sides of the mounting plate, and the telescopic ends of the two sets of hydraulic rods are respectively fixedly connected to their adjacent mounting sleeves.

[0007] Preferably, the lever mechanism includes a pressure rod, which is slidably sleeved in the middle of the inner cavity of the mounting sleeve. A movable seat is fixedly installed at the bottom end of the pressure rod. Crank rods are symmetrically slidably sleeved on the front and rear sides of the movable seat. A movable shaft is slidably sleeved on the middle of the crank rod near the movable seat. The movable shaft is fixedly connected to the mounting sleeve. Sliding blocks are slidably sleeved on the ends of the two sets of crank rods away from the pressure rod. The sliding blocks are slidably sleeved on the mounting sleeve.

[0008] Preferably, the hydraulic mechanism includes a hydraulic housing, which is fixedly installed on the upper surface of the mounting sleeve away from the pressure rod. A top cover is fixedly sleeved on the upper part of the inner cavity of the hydraulic housing, and a guide tube is fixedly sleeved on the middle part of the top cover. An elastic element is fixedly installed on the bottom surface of the top cover, and a piston is fixedly installed on the bottom end of the elastic element. The piston is slidably sleeved with the hydraulic housing, and the bottom end of the piston is fixedly connected to the upper surface of the sliding block directly below it.

[0009] Preferably, the eccentric mechanism includes a mounting base, which is fixedly mounted on the top of the pressure rod. A first driving member is fixedly mounted on the side of the upper surface of the mounting base away from the main shaft mechanism, and a support sleeve is fixedly mounted on the side of the upper surface of the mounting base near the main shaft mechanism. The output shaft of the first driving member is movably sleeved in the middle of the support sleeve. A connecting block is fixedly sleeved on the side of the output shaft of the first driving member near the main shaft mechanism. A sliding sleeve is fixedly mounted on the side of the connecting block near the main shaft mechanism. A sliding block is slidably sleeved in the middle of the sliding sleeve. A bushing is fixedly mounted on the side of the sliding block near the main shaft mechanism. A second driving member is fixedly mounted on one side of the sliding sleeve. A threaded rod is fixedly mounted on the output end of the second driving member. The threaded rod is threadedly connected to the sliding block. A counterweight is fixedly mounted on the other end of the sliding sleeve.

[0010] Preferably, the main shaft mechanism includes a main shaft, which is slidably sleeved in the middle of the left bushing, and a secondary shaft is slidably sleeved in the middle of the right bushing. A connecting block is fixedly installed on the side of the secondary shaft near the main shaft, and the connecting block is slidably sleeved with the main shaft.

[0011] Preferably, the clamping mechanism includes a collar, on which a plurality of rotating rods are equidistantly sleeved at circumferences. A clamping block is slidably sleeved at the end of each rotating rod away from the collar, and a telescopic sleeve is fixedly installed on the side of the clamping block away from the collar.

[0012] Preferably, the left sleeve is slidably sleeved with the main shaft, the right sleeve is slidably sleeved with the secondary shaft, the end of the left telescopic sleeve away from the clamping block is fixedly connected to the main shaft, and the end of the right telescopic sleeve away from the clamping block is fixedly connected to the secondary shaft.

[0013] Preferably, the distance from the end of the crank closer to the movable seat to the movable seat is less than four times the distance from the end of the crank farther from the movable seat to the movable seat.

[0014] Preferably, the contact surface between the piston and the hydraulic housing is a smooth surface, the conduit is made of transparent glass, and a colored solution is filled between the top cover of the hydraulic housing and the piston.

[0015] The beneficial effects of the embodiments disclosed herein are as follows: 1. In this invention, the eccentric mechanism is first activated, which drives the main shaft mechanism to rotate. The main shaft mechanism then drives the clamping mechanism to idle. The clamping mechanism transmits its vibration to the hydraulic mechanism through the main shaft mechanism, the eccentric mechanism, and the lever mechanism, causing the piston inside the hydraulic housing to move up and down. At this time, the changes in the water level lines inside multiple conduits are observed. When the water level inside the conduits remains stable, that is, the axis of rotation of the main shaft mechanism and the clamping mechanism coincides with the balance line of the main shaft mechanism and the clamping mechanism. When the water level line inside the conduits shows a shaking state, the eccentric mechanism is de-energized, and the clamping mechanism pulls the main shaft mechanism to rotate under the action of gravity. When the main shaft mechanism and the clamping mechanism stop rotating, the main shaft mechanism... The bottom end of the shaft mechanism and clamping mechanism is in the direction of the offset of the balance line of the main shaft mechanism and clamping mechanism. Then, the second driving component is started. The output end of the second driving component drives the sliding block to move upward through the threaded rod, so that the balance line of the main shaft mechanism and clamping mechanism moves upward. Then, all the above operations are repeated until the water level in the inner cavity of the guide tube remains stable. In addition, the upward displacement distance of the sliding block can be increased or decreased according to the size of the water level line vibration in the inner cavity of the guide tube to speed up the debugging efficiency. Thus, when the balance detection device is used to test the impeller, the balance detection device is prioritized for debugging and testing, avoiding the problem of reduced detection accuracy caused by wear and other errors of the balance detection device.

[0016] 2. After the balance detection device of this invention is debugged, the impeller to be tested is installed in the middle of the balance detection device through the forward and reverse start separation mechanism. The clamping mechanism fixes the impeller. At this time, the balance detection device is used to test the balance of the impeller until the water level in the inner cavity of the guide tube remains stable. When the sliding block does not move before and after the test, the balance line of the impeller coincides with the central axis of the impeller. When the sliding block moves before and after the test, the offset distance between the balance line of the impeller and the central axis of the impeller can be determined by the displacement distance of the sliding block. Thus, while testing the balance of the impeller, the offset distance between the balance line of the impeller and the central axis of the impeller is detected. This allows for subsequent adjustment of the rotation shaft position of the impeller installed on the production equipment by detecting the offset distance between the balance line of the impeller and the central axis of the impeller, avoiding the direct discarding of impellers with the balance line offset from the central axis, and improving the utilization efficiency of the impeller.

[0017] 3. In this invention, because the distance from the end of the crank rod closest to the movable seat to the movable seat is less than four times the distance from the end of the crank rod furthest from the movable seat to the movable seat, when the impeller under test pushes the pressure rod downward a certain distance through the eccentric mechanism, the pressure rod pushes the crank rod to rotate along the movable shaft through the movable seat, causing the end of the crank rod furthest from the movable seat to move upward at least four times the downward movement of the pressure rod. Conversely, when the impeller pulls the pressure rod downward through the eccentric mechanism, the same principle applies. This achieves a first-level amplification of the upward and downward movement distance of the impeller under test, improving the accuracy of subsequent impeller balance detection. At the same time, by setting a guide tube with an inner diameter of less than 3 mm, when the piston moves downward a small distance, the piston pushes the liquid surface of the guide tube cavity to move downward a large distance, thus achieving a second-level amplification of the vertical displacement of the impeller under test, further improving the accuracy of subsequent impeller balance detection. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the overall appearance of the present invention; Figure 2 This is a schematic diagram of the lever mechanism in this invention; Figure 3 This is a schematic diagram of the hydraulic mechanism in this invention; Figure 4 This is a schematic diagram of the eccentric mechanism in this invention; Figure 5This is a schematic diagram of the main shaft mechanism in this invention; Figure 6 This is a schematic diagram of the clamping mechanism in this invention.

[0020] In the diagram: 1. Base; 101. Guide groove; 2. Separation mechanism; 201. Mounting plate; 202. Hydraulic rod; 3. Mounting sleeve; 4. Lever mechanism; 401. Pressure rod; 402. Movable seat; 403. Crank rod; 404. Movable shaft; 405. Sliding block; 5. Hydraulic mechanism; 501. Hydraulic housing; 502. Top cover; 503. Guide tube; 504. Elastic element; 505. Piston; 6. Eccentric mechanism; 601 602. Mounting base; 603. First driving component; 604. Support sleeve; 605. Connecting block; 606. Sliding sleeve; 607. Sliding block; 608. Bushing; 609. Second driving component; 610. Threaded rod; 610. Counterweight block; 7. Main spindle mechanism; 701. Main spindle; 702. Secondary spindle; 703. Connecting block; 8. Clamping mechanism; 801. Collar; 802. Rotating rod; 803. Clamping block; 804. Telescopic sleeve. Detailed Implementation

[0021] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0022] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0023] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0024] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 disclosure.

[0026] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] like Figures 1 to 6 As shown, it illustrates an impeller dynamic balancing test apparatus according to an embodiment of the present disclosure, comprising: Base 1, with guide grooves 101 symmetrically opened on the left and right sides of the upper surface of base 1; Separation mechanism 2 is located in the middle of the upper surface of base 1; Two sets of mounting sleeves 3 are symmetrically and slidingly fitted into the middle of two sets of guide grooves 101; Two sets of lever mechanisms 4 are symmetrically arranged in the middle of the two sets of mounting sleeves 3; Multiple hydraulic mechanisms 5 are symmetrically arranged on the front and rear sides of the top surface of the two sets of mounting sleeves 3. Two sets of eccentric mechanisms 6 are symmetrically arranged on the upper part of the two sets of lever mechanisms 4; The main spindle mechanism 7 is located in the middle of the two sets of eccentric mechanisms 6; Two sets of clamping mechanisms 8 are symmetrically arranged on the left and right sides of the main spindle mechanism 7; In use, the eccentric mechanism 6 drives the main shaft mechanism 7 to rotate, and the main shaft mechanism 7 drives the clamping mechanism 8 to idle. The clamping mechanism 8 transmits its vibration to the hydraulic mechanism 5 through the main shaft mechanism 7, the eccentric mechanism 6 and the lever mechanism 4, causing the piston 505 in the inner cavity of the hydraulic housing 501 to move up and down. At this time, the water level changes in the inner cavities of multiple conduits 503 are observed to determine the balance of the device.

[0028] like Figures 1 to 2 As shown, the separation mechanism 2 includes a mounting plate 201, which is fixedly installed in the middle of the upper surface of the base 1. Hydraulic rods 202 are symmetrically fixedly installed in the middle of the left and right sides of the mounting plate 201. The telescopic ends of the two sets of hydraulic rods 202 are respectively fixedly connected to their adjacent mounting sleeves 3. In use, start the hydraulic rod 202 in the forward direction. The telescopic end of the hydraulic rod 202 pushes the mounting sleeve 3 to move away from the mounting plate 201. The mounting sleeve 3 drives the eccentric mechanism 6 to move away from the mounting plate 201 through the lever mechanism 4. The two sets of eccentric mechanisms 6 drive the main shaft 701 and the secondary shaft 702 to move away from the mounting plate 201 respectively. The main shaft 701 and the secondary shaft 702 separate from each other. At this time, the impeller to be tested can be moved to the middle position of the gap created by the separation of the adjacent sides of the main shaft 701 and the secondary shaft 702. Then start the hydraulic rod 202 in the reverse direction. At this time, the main shaft 701 and the secondary shaft 702 move closer to each other. The main shaft 701 and the secondary shaft 702 drive the clamping mechanism 8, which is slidably sleeved with them, to move to the middle of the inner cavity of the impeller to be tested.

[0029] like Figures 1 to 3 As shown, the lever mechanism 4 includes a pressure rod 401, which is slidably sleeved in the middle of the inner cavity of the mounting sleeve 3. A movable seat 402 is fixedly installed at the bottom end of the pressure rod 401. A crank rod 403 is symmetrically slidably sleeved on the front and rear sides of the movable seat 402. A movable shaft 404 is slidably sleeved on the middle of the side of the crank rod 403 near the movable seat 402. The movable shaft 404 is fixedly connected to the mounting sleeve 3. A sliding block 405 is slidably sleeved on the end of each of the two sets of crank rods 403 away from the pressure rod 401. The sliding block 405 is slidably sleeved on the mounting sleeve 3. Specifically, the distance from the end of the crank rod 403 closest to the movable seat 402 to the movable seat 402 is less than four times the distance from the end of the crank rod 403 furthest from the movable seat 402 to the movable seat 402. This ensures that when the impeller under test pushes the pressure rod 401 downward a certain distance through the eccentric mechanism 6, the pressure rod 401 pushes the crank rod 403 to rotate along the movable shaft 404 through the movable seat 402, causing the end of the crank rod 403 furthest from the movable seat 402 to move upward at least four times the distance the pressure rod 401 moves downward. Conversely, when the impeller pulls the pressure rod 401 downward through the eccentric mechanism 6, the end of the crank rod 403 furthest from the movable seat 402 to move downward at least four times the distance the pressure rod 401 moves downward. This achieves a first-level amplification of the distance the impeller under test moves up and down, improving the accuracy of subsequent impeller balance testing. In use, when the impeller under test pushes the eccentric mechanism 6 to move downward, the eccentric mechanism 6 pushes the pressure rod 401 to move downward, the pressure rod 401 pushes the movable seat 402 to move downward, and the movable seat 402 pushes the end of the crank rod 403 that is slidably connected to it to move downward. The end of the crank rod 403 away from the pressure rod 401 rotates upward along the movable shaft 404. The top of the crank rod 403 away from the pressure rod 401 drives the sliding block 405 to move downward, thereby realizing that the sliding block 405 pushes the piston 505 to move upward. The piston 505 squeezes the elastic element 504 to contract. Conversely, when the impeller under test drives the eccentric mechanism 6 to move upward, the sliding block 405 pulls the piston 505 to move downward, and the piston 505 pulls the elastic element 504 to extend.

[0030] like Figures 1 to 6 As shown, the hydraulic mechanism 5 includes a hydraulic housing 501, which is fixedly installed on the upper surface of the mounting sleeve 3 away from the pressure rod 401. A top cover 502 is fixedly sleeved on the upper part of the inner cavity of the hydraulic housing 501. A conduit 503 is fixedly sleeved on the middle part of the top cover 502. An elastic element 504 is fixedly installed on the bottom surface of the top cover 502. A piston 505 is fixedly installed on the bottom end of the elastic element 504. The piston 505 is slidably sleeved with the hydraulic housing 501. The bottom end of the piston 505 is fixedly connected to the upper surface of the sliding block 405 directly below it. The contact surface between piston 505 and hydraulic housing 501 is smooth, thereby improving the sealing between piston 505 and hydraulic housing 501 and preventing leakage of solution between the top cover 502 of hydraulic housing 501 and piston 505. The conduit 503 is made of hard transparent material, and the inner diameter of the conduit 503 must be less than 3 mm to facilitate observation of the change in solution height in the conduit 503. This allows the upward movement of the solution surface in the conduit 503 to be greater than the upward movement of piston 505, thus amplifying the upward movement of piston 505 driven by sliding block 405. In addition, it also allows the downward movement of the solution surface in the conduit 503 to be greater than the downward movement of piston 505, thereby achieving secondary amplification of the vertical displacement of the impeller under test and further improving the accuracy of subsequent impeller balance detection. The space between the top cover 502 of hydraulic housing 501 and piston 505 is filled with a colored solution.

[0031] like Figure 1 , Figure 2 and Figure 4As shown, the eccentric mechanism 6 includes a mounting base 601, which is fixedly mounted on the top of the pressure rod 401. A first driving member 602 is fixedly mounted on the side of the upper surface of the mounting base 601 away from the main spindle mechanism 7. A support sleeve 603 is fixedly mounted on the side of the upper surface of the mounting base 601 near the main spindle mechanism 7. The output shaft of the first driving member 602 is movably sleeved in the middle of the support sleeve 603. A connecting block 604 is fixedly sleeved on the side of the output shaft of the first driving member 602 near the main spindle mechanism 7. A sliding sleeve 605 is fixedly installed on the side of the connecting block 604 near the main spindle mechanism 7. A sliding block 606 is slidably connected to the middle of the sliding sleeve 605. A bushing 607 is fixedly installed on the side of the sliding block 606 near the main spindle mechanism 7. A second driving member 608 is fixedly installed on one side of the sliding sleeve 605. A threaded rod 609 is fixedly installed at the output end of the second driving member 608. The threaded rod 609 is threadedly connected to the sliding block 606. A counterweight block 610 is fixedly installed at the other end of the sliding sleeve 605. The weight of the counterweight 610 is equal to the weight of the second driving member 608, thereby making the balance line formed by the sliding sleeve 605, the second driving member 608 and the threaded rod 609 coincide with the central axis of the output shaft of the first driving member 602, thus ensuring that the sliding sleeve 605 maintains stable rotation when the first driving member 602 drives the sliding sleeve 605 to rotate through the connecting block 604. In use, the first drive unit 602 is activated. The output end of the first drive unit 602 drives the connecting block 604 to rotate. The connecting block 604 drives the sliding sleeve 605 to rotate. The sliding sleeve 605 drives the sliding block 606, the second drive unit 608, the threaded rod 609, and the counterweight 610 to rotate. The sliding block 606 drives the bushing 607 to rotate. The bushing 607 drives the main shaft mechanism 7 to rotate. The main shaft mechanism 7 drives the clamping mechanism 8 to rotate. The clamping mechanism 8 drives the impeller to be tested, which is clamped by it, to rotate. In addition, when the second drive unit 608 is activated in the forward direction, the output shaft of the second drive unit 608 drives the threaded rod... When 609 rotates forward, the threaded rod 609 drives the sliding block 606 to move forward, the sliding block 606 drives the bushing 607 to move forward, the bushing 607 drives the main shaft mechanism 7 to move forward, the main shaft mechanism 7 drives the clamping mechanism 8 to move forward, and the clamping mechanism 8 drives the impeller to be tested, which is clamped by it, to move forward, thereby moving the central axis of the impeller to be tested in front of the central axis of the output shaft of the first drive member 602. Similarly, when the second drive member 608 rotates in the opposite direction, the central axis of the impeller to be tested moves behind the central axis of the output shaft of the first drive member 602, thereby adjusting the axis position of the impeller to be tested.

[0032] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the main spindle mechanism 7 includes a main spindle 701, which is slidably sleeved in the middle of the left sleeve 607. A secondary spindle 702 is slidably sleeved in the middle of the right sleeve 607. A connecting block 703 is fixedly installed on the side of the secondary spindle 702 near the main spindle 701. The connecting block 703 is slidably sleeved with the main spindle 701. The main shaft 701 and the secondary shaft 702 are made of high-hardness materials, and the main shaft 701 and the secondary shaft 702 are made of high-carbon steel, so as to avoid bending and deformation of the main shaft 701 and the secondary shaft 702 in the future, which would cause the collar 801 to be obstructed from sliding along the main shaft 701 and the secondary shaft 702.

[0033] like Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the clamping mechanism 8 includes a collar 801, a plurality of rotating rods 802 are equidistantly sleeved around the collar 801, a clamping block 803 is slidably sleeved at the end of the rotating rod 802 away from the collar 801, and a telescopic sleeve 804 is fixedly installed on the side of the clamping block 803 away from the collar 801. Among them, the left collar 801 is slidably sleeved with the main shaft 701, the right collar 801 is slidably sleeved with the secondary shaft 702, the end of the left telescopic sleeve 804 away from the clamping block 803 is fixedly connected to the main shaft 701, and the end of the right telescopic sleeve 804 away from the clamping block 803 is fixedly connected to the secondary shaft 702. In use, the hydraulic rod 202 is activated in reverse, and the main shaft 701 and the auxiliary shaft 702 move closer to each other. The main shaft 701 and the auxiliary shaft 702 drive the clamping mechanism 8, which is slidably connected to them, to move to the middle of the inner cavity of the impeller to be tested. Then, the hydraulic rod 202 is activated in reverse again. At this time, the hydraulic rod 202 continues to drive the eccentric mechanism 6 to move towards the main shaft mechanism 7 through the mounting sleeve 3 and the lever mechanism 4. The main shaft 701 and the auxiliary shaft 702 contract towards the inner cavity of their adjacent bushing 607. The bushing 607 squeezes the collar 801 to move to one side of the telescopic sleeve 804. The collar 801 pushes the rotating rod 802 to expand through the rotating rod 802. The clamping block 803 pulls the telescopic end of the telescopic sleeve 804 to extend until the clamping block 803 is in close contact with the inner circle of the impeller to be tested. This achieves the installation and fixation of impellers with different inner diameters at the same time as installing the impeller to be tested into the middle of the balance detection device, while reducing the installation steps and improving the detection efficiency.

[0034] Working principle: Before using this device, first start the eccentric mechanism 6. The eccentric mechanism 6 drives the main shaft mechanism 7 to rotate. The main shaft mechanism 7 drives the clamping mechanism 8 to idle. The clamping mechanism 8 transmits its vibration to the hydraulic mechanism 5 through the main shaft mechanism 7, the eccentric mechanism 6, and the lever mechanism 4, causing the piston 505 in the inner cavity of the hydraulic housing 501 to move up and down. At this time, observe the changes in the water level lines in the inner cavities of multiple conduits 503. When the water level in the inner cavity of the conduit 503 remains stable, that is, the axis of rotation of the main shaft mechanism 7 and the clamping mechanism 8 coincides with the balance line of the main shaft mechanism 7 and the clamping mechanism 8. When the water level in the inner cavity of the conduit 503 shows a shaking state, the eccentric mechanism 6 is activated. When the power to the core mechanism 6 is cut off, the clamping mechanism 8 pulls the main shaft mechanism 7 to rotate under the action of gravity. When the main shaft mechanism 7 and the clamping mechanism 8 stop rotating, the bottom end of the main shaft mechanism 7 and the clamping mechanism 8 is offset from the balance line of the main shaft mechanism 7 and the clamping mechanism 8. Then, the second drive unit 608 is activated. The output end of the second drive unit 608 drives the sliding block 606 to move upward through the threaded rod 609, so that the balance line of the main shaft mechanism 7 and the clamping mechanism 8 moves upward. Then, all the above operations are repeated until the water level in the inner cavity of the conduit 503 remains stable. In addition, the size of the water level fluctuation in the inner cavity of the conduit 503 can be adjusted. The upward displacement distance of sliding block 606 is increased or decreased to speed up the debugging process. This allows the balancing detection device to prioritize debugging and testing when testing the impeller, avoiding the problem of reduced detection accuracy caused by wear and other errors. Furthermore, after the balancing detection device debugging is completed, the impeller to be tested is installed in the middle of the balancing detection device via the forward and reverse start separation mechanism 2, and the clamping mechanism 8 fixes the impeller. At this time, the balancing detection device debugging and testing steps are used to test the impeller balance until the water level inside the guide tube 503 remains stable. When sliding block 606... When no displacement occurs before and after the detection, the impeller's balance line coincides with the impeller's central axis. When the sliding block 606 shifts before and after the detection, the offset distance between the impeller's balance line and the impeller's central axis can be determined by the displacement distance of the sliding block 606. This allows for the simultaneous detection of the impeller's balance line and the offset distance between the impeller's central axis while simultaneously detecting the impeller's balance. This enables subsequent adjustments to the rotation shaft position of the impeller when it is installed on the production equipment, preventing impellers with a balance line offset from the central axis from being discarded directly and improving impeller utilization efficiency.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A dynamic balancing testing device for an impeller, characterized in that, include: The base (1) has guide grooves (101) symmetrically opened on the left and right sides of the upper surface of the base (1). Separation mechanism (2), which is disposed in the middle of the upper surface of the base (1); Two sets of mounting sleeves (3) are symmetrically slidably fitted into the middle of two sets of guide grooves (101); Two sets of lever mechanisms (4) are symmetrically arranged in the middle of two sets of mounting sleeves (3); Multiple sets of hydraulic mechanisms (5) are symmetrically arranged on the front and rear sides of the top surface of the two sets of mounting sleeves (3); Two sets of eccentric mechanisms (6) are symmetrically arranged on the upper part of the two sets of lever mechanisms (4); The main spindle mechanism (7) is located in the middle of the two sets of eccentric mechanisms (6); Two sets of clamping mechanisms (8) are symmetrically arranged on the left and right sides of the main shaft mechanism (7).

2. The impeller dynamic balancing testing device according to claim 1, characterized in that, The separation mechanism (2) includes a mounting plate (201), which is fixedly installed in the middle of the upper surface of the base (1). Hydraulic rods (202) are symmetrically fixedly installed in the middle of the left and right sides of the mounting plate (201). The telescopic ends of the two sets of hydraulic rods (202) are respectively fixedly connected to the adjacent mounting sleeves (3).

3. The impeller dynamic balancing testing device according to claim 2, characterized in that, The lever mechanism (4) includes a pressure rod (401), which is slidably sleeved in the middle of the inner cavity of the mounting sleeve (3). A movable seat (402) is fixedly installed at the bottom end of the pressure rod (401). A crank rod (403) is symmetrically slidably sleeved on the front and rear sides of the movable seat (402). A movable shaft (404) is slidably sleeved on the middle of the side of the crank rod (403) near the movable seat (402). The movable shaft (404) is fixedly connected to the mounting sleeve (3). A sliding block (405) is slidably sleeved at the end of each of the two sets of crank rods (403) away from the pressure rod (401). The sliding block (405) is slidably sleeved with the mounting sleeve (3).

4. The impeller dynamic balancing testing device according to claim 3, characterized in that, The hydraulic mechanism (5) includes a hydraulic housing (501), which is fixedly installed on the upper surface of the mounting sleeve (3) away from the pressure rod (401). A top cover (502) is fixedly sleeved on the upper part of the inner cavity of the hydraulic housing (501). A conduit (503) is fixedly sleeved on the middle part of the top cover (502). An elastic element (504) is fixedly installed on the bottom surface of the top cover (502). A piston (505) is fixedly installed at the bottom end of the elastic element (504). The piston (505) is slidably sleeved with the hydraulic housing (501). The bottom end of the piston (505) is fixedly connected to the upper surface of the sliding block (405) directly below it.

5. The impeller dynamic balancing testing device according to claim 4, characterized in that, The eccentric mechanism (6) includes a mounting base (601), which is fixedly mounted on the top of the pressure rod (401). A first driving member (602) is fixedly mounted on the side of the upper surface of the mounting base (601) away from the main shaft mechanism (7), and a support sleeve (603) is fixedly mounted on the side of the upper surface of the mounting base (601) close to the main shaft mechanism (7). The output shaft of the first driving member (602) is movably sleeved in the middle of the support sleeve (603), and a connecting block (604) is fixedly sleeved on the side of the output shaft of the first driving member (602) close to the main shaft mechanism (7). A sliding sleeve (605) is fixedly installed on one side of the block (604) near the main shaft mechanism (7). A sliding block (606) is slidably connected to the middle of the sliding sleeve (605). A bushing (607) is fixedly installed on one side of the sliding block (606) near the main shaft mechanism (7). A second driving member (608) is fixedly installed on one side of the sliding sleeve (605). A threaded rod (609) is fixedly installed at the output end of the second driving member (608). The threaded rod (609) is threadedly connected to the sliding block (606). A counterweight block (610) is fixedly installed at the other end of the sliding sleeve (605).

6. The impeller dynamic balancing testing device according to claim 5, characterized in that, The main shaft mechanism (7) includes a main shaft (701), which is slidably sleeved in the middle of the left bushing (607). A secondary shaft (702) is slidably sleeved in the middle of the right bushing (607). A connecting block (703) is fixedly installed on the side of the secondary shaft (702) near the main shaft (701). The connecting block (703) is slidably sleeved with the main shaft (701).

7. The impeller dynamic balancing testing device according to claim 6, characterized in that, The clamping mechanism (8) includes a collar (801), on which a plurality of rotating rods (802) are equidistantly sleeved. A clamping block (803) is slidably sleeved at one end of the rotating rod (802) away from the collar (801). A telescopic sleeve (804) is fixedly installed on the side of the clamping block (803) away from the collar (801).

8. The impeller dynamic balancing testing device according to claim 7, characterized in that, The collar (801) on the left side is slidably sleeved with the main shaft (701), and the collar (801) on the right side is slidably sleeved with the secondary shaft (702). The end of the telescopic sleeve (804) on the left side away from the clamping block (803) is fixedly connected to the main shaft (701), and the end of the telescopic sleeve (804) on the right side away from the clamping block (803) is fixedly connected to the secondary shaft (702).

9. The impeller dynamic balancing testing device according to claim 8, characterized in that, The distance from the end of the crank (403) closest to the movable seat (402) to the movable seat (402) is less than four times the distance from the end of the crank (403) furthest from the movable seat (402) to the movable seat (402).

10. The impeller dynamic balancing testing device according to claim 9, characterized in that, The contact surface between the piston (505) and the hydraulic housing (501) is a smooth surface. The conduit (503) is made of transparent glass. The space between the top cover (502) of the inner cavity of the hydraulic housing (501) and the piston (505) is filled with a colored solution.

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