Device for losslessly adjusting dynamic balance of impeller body of impeller head
By installing detachable fixed support rods and copper columns on the shot blasting impeller, the mass distribution of the impeller is adjusted, solving the vibration and noise problems of the impeller when rotating at high speed, achieving non-destructive dynamic balance adjustment, and improving the service life and rigidity of the shot blasting machine.
Patent Information
- Application Number
- CN202520564256.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Existing shot blasting impellers vibrate and produce noise when rotating at high speeds because they are not in a balanced state. Traditional dynamic balancing methods, which involve drilling holes, reduce the rigidity and strength of the impeller.
A non-destructive adjustment device is adopted, which adjusts the mass distribution of the impeller by setting detachable fixed support rods and copper columns on the impeller, thereby achieving non-destructive adjustment of the center of mass position.
The dynamic balance adjustment of the impeller was achieved, which improved the life and rigidity of the shot blasting machine and avoided the damage to the impeller structure caused by traditional drilling adjustment.
Smart Images
Figure CN223889765U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of shot blasting technology, specifically relating to a device for non-destructive adjustment of the dynamic balance of the shot blasting impeller. Background Technology
[0002] In the mechanical field, surface treatment is a crucial step, affecting the durability, aesthetics, and overall performance of workpieces. Shot blasting, as a surface treatment process, utilizes a high-speed stream of shot to continuously impact the surface of the workpiece being strengthened, causing changes to the target material surface and its outer layer during cyclic deformation.
[0003] Existing shot blasting equipment includes a shot distribution wheel, a directional sleeve, and an impeller. During operation, the shot is introduced into the shot blasting equipment through the shot inlet pipe. As the blades rotate synchronously, the shot distribution wheel accelerates the shot and gives it an initial velocity, ensuring that it can be shot onto the workpiece surface in an orderly and uniform manner. The precise window on the directional sleeve further guides the flight direction of the shot, enabling it to accurately strike specific areas on the workpiece. Finally, the high-speed rotating blades accelerate the shot again, causing it to impact the workpiece surface at extremely high speed, thereby achieving efficient and uniform treatment of the workpiece surface.
[0004] When a shot blasting machine is working, the impeller speed can reach 3000 r / min. This high speed places high demands on the static and dynamic balance of the impeller. If the impeller is not balanced under high-speed rotation, it will cause strong vibrations during processing. This will not only accelerate the wear of parts but also produce harsh noise, thus seriously affecting the production efficiency and quality of the product.
[0005] Currently, traditional methods for adjusting impeller dynamic balancing mainly rely on drilling holes in the impeller body to remove material and achieve balance. Specifically, after using a dynamic balancing instrument to detect the impeller's imbalance, holes are drilled at different locations in the impeller body to remove a certain amount of material, thus adjusting the mass distribution and bringing the impeller to a balanced state.
[0006] However, the drilling method causes irreversible damage to the impeller, which to some extent reduces the rigidity and strength of the impeller body, thereby affecting the life and rigidity of the shot blasting machine. Utility Model Content
[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device for non-destructive adjustment of the dynamic balance of the impeller of a shot blasting machine.
[0008] To achieve the above objectives, the present invention adopts the following technical solution:
[0009] A device for non-destructive adjustment of the dynamic balance of a shot blasting impeller includes a shot distribution wheel, a directional sleeve, and an impeller arranged coaxially from the inside to the outside in a radial direction;
[0010] The impeller includes two parallel rings, and a number of blades are evenly arranged between the two rings along the circumferential direction.
[0011] An even number of fixed struts are evenly arranged along the circumference between the two rings, and the two rings are detachably connected to the fixed struts.
[0012] A copper column is fixedly installed axially inside the fixed support rod, and the central axis of the copper column is offset from the central axis of the fixed support rod.
[0013] Two fixed support rods facing each other along the impeller diameter direction form a set of adjustment units; in each set of adjustment units, the distance between the central axis of the copper column and the central axis of the fixed support rod is the same; in different adjustment units, the distance between the central axis of the copper column and the central axis of the fixed support rod is different.
[0014] Preferably, both the fixed support rod and the copper column are cylindrical structures, and the central axis of the fixed support rod is parallel to the central axis of the ring.
[0015] Preferably, the fixed support rod is provided with an axially penetrating mounting hole for embedding the copper column.
[0016] Preferably, the ring is provided with a plurality of threaded holes that correspond one-to-one with the fixed support rod along the circumferential direction, and the fixed support rod is provided with a connecting hole that passes through the axial direction in the middle.
[0017] After the connecting hole of the fixed support rod is aligned with the corresponding threaded hole on the two axial rings, the mounting bolt is fitted to achieve a detachable connection between the two rings and the fixed support rod.
[0018] Preferably, the weight and dimensions of the copper columns in all fixed struts are the same.
[0019] Preferably, one end of the two rings opposite each other is provided with a number of mounting grooves that correspond one-to-one with the blades along the circumferential direction, and the two mounting grooves on the two rings corresponding to the same blade are symmetrical.
[0020] The blades are inserted into corresponding mounting slots at both ends along the axial direction of the impeller.
[0021] Preferably, the blade has outwardly protruding locking blocks on both sides of the end near the central axis of the impeller, and the mounting groove has a locking groove adapted to the locking blocks at the inner end along the radial direction of the ring.
[0022] In the optimized configuration, the card block has a semi-circular structure, and the central axis of the circle containing the semi-circular structure is parallel to the central axis of the annulus.
[0023] The beneficial effects of this utility model are:
[0024] This invention utilizes a fixed support rod with an internal copper column. By rotating the fixed support rod, the position of the copper column is changed to alter the mass distribution of the impeller, thereby adjusting the position of the impeller's center of mass. The structure is simple and easy to adjust. It avoids the impact on impeller rigidity caused by drilling holes in the impeller to adjust the center of mass, without damaging the overall structure of the impeller. This improves the lifespan and rigidity of the shot blasting machine and achieves non-destructive adjustment of the impeller's center of mass. Attached Figure Description
[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.
[0026] Figure 1 This is a three-dimensional schematic diagram of the device for non-destructive adjustment of the dynamic balance of the shot blasting impeller of this utility model;
[0027] Figure 2 This is an exploded schematic diagram of the device for non-destructive adjustment of the dynamic balance of the shot blasting impeller of this utility model;
[0028] Figure 3 This is a three-dimensional schematic diagram of the impeller structure in this utility model;
[0029] Figure 4 This is a schematic front view of the impeller structure in this utility model;
[0030] Figure 5 yes Figure 4 Sectional view along axis AA;
[0031] Figure 6 This is a schematic right view of the impeller structure in this utility model;
[0032] Figure 7 yes Figure 6 BB-direction sectional view;
[0033] Figure 8 This is a schematic diagram of the blade structure in this utility model;
[0034] in:
[0035] 1-Shot distribution wheel, 2-Directional sleeve, 3-Impeller, 31-Ring, 311-Mounting groove, 312-Card slot, 32-Blade, 321-Card block, 4-Fixing support rod, 5-Copper column, 6-Bolt. Detailed Implementation
[0036] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0038] In this utility model, terms such as "upper", "lower", "bottom", and "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various components or elements of this utility model and do not specifically refer to any component or element in this utility model. They should not be construed as limiting this utility model.
[0039] In this utility model, terms such as "connected" and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and should not be construed as a limitation of this utility model.
[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0041] like Figures 1-2 As shown, a device for non-destructive adjustment of the dynamic balance of a shot blasting impeller includes a shot distribution wheel 1, a directional sleeve 2, and an impeller 3 arranged coaxially from the inside to the outside in a radial direction;
[0042] like Figures 3-7 As shown, the impeller 3 includes two parallel rings 31, and a plurality of blades 32 are evenly arranged between the two rings 31 along the circumferential direction.
[0043] An even number of fixed support rods 4 are evenly arranged along the circumference between the two rings 31, and the two rings 31 and the fixed support rods 4 are detachably connected; specifically, each fixed support rod 4 is located between two adjacent blades 32.
[0044] A copper column 5 is fixedly installed axially inside the fixed support rod 4, and the central axis of the copper column 5 is offset from the central axis of the fixed support rod 4.
[0045] Two fixed support rods 4, positioned opposite each other along the diameter of the impeller 3, form a set of adjustment units. In each adjustment unit, the distance between the central axis of the copper column 5 and the central axis of its corresponding fixed support rod 4 is the same. However, in different adjustment units, the distance between the central axis of the copper column 5 and the central axis of its corresponding fixed support rod 4 varies. That is, as follows... Figure 7 In the middle, the two upper and lower fixed support rods 4 and the two left and right fixed support rods are each a set of adjustment units; in the two upper and lower fixed support rods, the distance between the central axis of the copper column 5 and the central axis of the fixed support rod 4 is the same, which is L1; in the two left and right fixed support rods, the distance between the central axis of the copper column 5 and the central axis of the fixed support rod 4 is the same, which is L2; L1 and L2 are different.
[0046] Preferably, both the fixed support rod 4 and the copper column 5 are cylindrical structures, and the central axis of the fixed support rod 4 is parallel to the central axis of the ring 31.
[0047] Preferably, the fixed support rod 4 is provided with an axially penetrating mounting hole for embedding the copper column 5.
[0048] Preferably, the ring 31 is provided with a plurality of threaded holes that correspond one-to-one with the fixed support rod 4 along the circumferential direction, and the fixed support rod 4 is provided with a connecting hole that passes through along the axial direction in the middle.
[0049] After the connecting hole of the fixed support rod 4 is aligned with the corresponding threaded holes on the two axial rings 31, the mounting bolt 6 is fitted to achieve a detachable connection between the two rings 31 and the fixed support rod 4.
[0050] Preferably, the weight and size of the copper columns 5 in all the fixed support rods 4 are the same.
[0051] Preferably, one end of the two rings 31 opposite to each other is provided with a plurality of mounting grooves 311 corresponding to the blades 32 along the circumferential direction, and the two mounting grooves 311 on the two rings 31 corresponding to the same blade 32 are symmetrical.
[0052] The blades 32 are inserted into the corresponding mounting slots 311 at both ends along the axial direction of the impeller 3.
[0053] Preferably, the blade 32 has outwardly protruding locking blocks 321 on both sides near the central axis of the impeller 3, and the mounting groove 311 has a locking groove 312 adapted to the locking blocks 321 at the inner end along the radial direction of the ring 31.
[0054] Optimized, such as Figure 8 As shown, the card block 321 has a semi-circular structure, and the central axis of the circle containing the semi-circular structure of the card block 321 is parallel to the central axis of the ring 31.
[0055] A device for non-destructive adjustment of the dynamic balance of a shot blasting impeller is described in the following specific implementation:
[0056] Step 1: Place the impeller 3 on the dynamic balancing tester and use the dynamic balancing tester to detect the position and distance of the impeller 3's center of mass from the rotation axis. Then loosen the bolt 6, rotate the fixed support rod 4, and change the mass distribution of the impeller 3 by changing the position of the copper column 5, so that the center of mass of the impeller 3 changes towards the rotation axis. Then tighten the bolt 6.
[0057] Step 2: Perform the test again using a dynamic balancing instrument. If the center of mass coincides with the center of rotation, the dynamic balancing adjustment is complete.
[0058] Otherwise, proceed to step 1 and perform multiple tests and adjustments until the center of mass of impeller 3 coincides with the center of rotation.
[0059] This application achieves the change of impeller 3's mass distribution by rotating the fixed support rod 4 and changing the position of the copper column 5 inside the fixed support rod 4, thereby adjusting the position of the impeller 3's center of mass. The structure is simple and the adjustment is convenient. It avoids the impact on impeller rigidity caused by existing methods of adjusting the center of mass by drilling holes in the impeller, does not damage the overall structure of the impeller 3, improves the life and rigidity of the shot blasting machine, and achieves non-destructive adjustment of the impeller 3's center of mass.
[0060] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, they are not intended to limit the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the protection scope of the present utility model.
Claims
1. A device for non-destructive adjustment of the dynamic balance of a shot blasting impeller, comprising a shot distribution wheel, a directional sleeve, and an impeller arranged coaxially from the inside to the outside in a radial direction; characterized in that, The impeller includes two parallel rings, and a number of blades are evenly arranged between the two rings along the circumferential direction. An even number of fixed struts are evenly arranged along the circumference between the two rings, and the two rings are detachably connected to the fixed struts. A copper column is fixedly installed axially inside the fixed support rod, and the central axis of the copper column is offset from the central axis of the fixed support rod. Two fixed support rods facing each other along the impeller diameter direction form a set of adjustment units; in each set of adjustment units, the distance between the central axis of the copper column and the central axis of the fixed support rod is the same; in different adjustment units, the distance between the central axis of the copper column and the central axis of the fixed support rod is different.
2. The device for non-destructive adjustment of the dynamic balance of the shot blasting impeller as described in claim 1, characterized in that, Both the fixed support rod and the copper column are cylindrical structures, and the central axis of the fixed support rod is parallel to the central axis of the ring.
3. The device for non-destructive adjustment of the dynamic balance of the shot blasting impeller as described in claim 1, characterized in that, The fixed support rod is provided with an axially penetrating mounting hole for embedding the copper column.
4. The device for non-destructive adjustment of the dynamic balance of the shot blasting impeller as described in claim 1, characterized in that, The ring is provided with a plurality of threaded holes along the circumferential direction, each corresponding to a fixed support rod, and the fixed support rod is provided with a connecting hole that passes through the axial direction in the middle. After the connecting hole of the fixed support rod is aligned with the corresponding threaded hole on the two axial rings, the mounting bolt is fitted to achieve a detachable connection between the two rings and the fixed support rod.
5. The device for non-destructive adjustment of the dynamic balance of the shot blasting impeller as described in claim 1, characterized in that, All the copper columns in the fixed struts have the same weight and dimensions.
6. The device for non-destructive adjustment of the dynamic balance of the shot blasting impeller as described in claim 1, characterized in that, The two rings have several mounting slots along the circumference at their opposite ends, each corresponding to a blade. The two mounting slots on the two rings corresponding to the same blade are symmetrical. The blades are inserted into corresponding mounting slots at both ends along the axial direction of the impeller.
7. The device for non-destructive adjustment of the dynamic balance of the shot blasting impeller as described in claim 6, characterized in that, The blade has outwardly protruding locking blocks on both sides near the central axis of the impeller, and the mounting groove has a locking groove that matches the locking blocks at the inner end along the radial direction of the ring.
8. The device for non-destructive adjustment of the dynamic balance of the shot blasting impeller as described in claim 7, characterized in that, The card block has a semi-circular structure, and the central axis of the circle containing the semi-circular structure is parallel to the central axis of the ring.