Surface treatment process of a submerged electric pump guide vane

Abstract

The application relates to the technical field of polishing processing, and discloses a surface treatment process of a submerged electric pump impeller, which comprises the following steps: step S1: installing an impeller body to be polished on a lifting platform; step S2: starting a driving element to rotate flexible polishing pieces through a transmission assembly; and step S3: driving a bearing frame to adjust the angle thereof through the built-in output source of a moving seat, so that each flexible polishing piece polishes the impeller blades on one side of a polishing area; at this time, the flexible polishing piece polishes the top end of the connection between the impeller blade and the impeller body, realizes automatic polishing, simultaneously polishes each impeller blade, and the angle and position of the contact between each flexible polishing piece and the impeller blade are consistent, which avoids the problems of low artificial polishing efficiency and inconsistent polishing effect of each impeller blade, and ensures that the shapes of the impeller blades before and after polishing are consistent.

Description

Technical Field

[0001] This invention relates to the field of grinding and machining technology, and specifically to a surface treatment process for a submersible electric pump impeller. Background Technology

[0002] Submersible electric pump (SAP) impellers consist of an impeller and a guide casing. The impeller is typically designed as a mixed-flow type to adapt to the characteristics of fluid flow in oil wells. Both the impeller and the guide casing blades are twisted, a design that helps improve the kinetic energy conversion efficiency of the fluid. However, during long-term use, the impeller blades of SSPs will wear down due to contact with abrasive materials such as sand particles downhole, affecting the pump's efficiency and lifespan. To solve this problem, grinding equipment is needed to repair the impeller.

[0003] Existing grinding equipment struggles to automate the grinding of highly complex curved blades on impellers and guide vanes. Typically, manual grinding using a handheld grinder is required. While this traditional method effectively treats the surface, manual grinding necessitates constant adjustments of force and angle to ensure uniform contact between the grinding surface and the impeller surface. However, due to human error, it's difficult to guarantee consistent force and angle each time. This results in varying degrees of grinding on each blade individually. Since the blade shape is crucial to pump performance, inconsistent grinding alters the original design shape, impacting the hydraulic performance and efficiency of the submersible pump. Therefore, this invention aims to provide a surface treatment process for submersible pump impellers and guide vanes that offers high grinding efficiency and consistent grinding results. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a surface treatment process for submersible electric pump impellers that offers high grinding efficiency and consistent grinding results. This process aims to solve the technical problem of inconsistent grinding results caused by manual impeller grinding, which leads to changes in the original blade shape of the impeller.

[0005] The objective of this invention can be achieved through the following technical solutions: A surface treatment process for a submersible electric pump impeller includes the following steps: Step S1: Install the impeller body to be polished on the lifting platform; Step S2: Start the drive unit, which drives the flexible grinding disc to rotate through the transmission assembly; Step S3: The built-in output source of the moving seat drives the support frame to adjust the angle on it, so that each flexible grinding disc grinds the impeller blades on one side of the grinding area. At this time, the flexible grinding disc grinds the top of the connection between the impeller blade and the impeller body. Step S4: The lifting platform is raised by the drive component, which in turn moves the impeller body upward. At this time, the contact surface between the flexible grinding disc and the impeller blade moves downward. Meanwhile, the action of the linkage component will cause each moving seat to expand outward. At this time, the contact surface between the flexible grinding disc and the impeller blade expands outward, so that the flexible grinding disc can grind the impeller blade from top to bottom along the arc surface of the impeller blade. Step S5: The telescopic component extends, causing the support frame to move on the carrier frame, thereby moving the contact area between the flexible grinding disc and the impeller blade away from the connection between the impeller blade and the impeller body. Step S6: The lifting platform is lowered by the drive component, and the linkage component causes each moving seat to retract inward, so that the flexible grinding disc grinds the impeller blades from bottom to top along the arc surface of the impeller blades. Step S7: Repeat steps S4-S6 until the entire arc surface of the impeller blade on one side of the grinding area is ground. At this time, the contact point between the flexible grinding disc and the impeller blade is located at the highest horizontal height of the impeller blade and is far away from the connection between the impeller blade and the impeller body.

[0006] As a further aspect of the present invention: after step S7, the following steps are also included: Step S8: The flexible grinding disc moves closer to the impeller body by retracting the telescopic component; Step S9: The built-in output source of the moving seat drives the carrier to adjust the angle on it, so that each flexible grinding disc grinds the impeller blades on the other side of the grinding area. Step S10: Repeat steps S4-S6 until the entire arc surface of the impeller blade on the other side of the grinding area is ground to complete the grinding operation.

[0007] As a further aspect of the present invention, step S specifically includes the following steps: Step S41: The external drive source drives the wheel to rotate, which in turn drives the threaded rod to move upward, thereby causing the lifting platform to move the impeller body upward and the contact surface between the flexible grinding disc and the impeller blade to move downward. Step S42: The rotation of the wheel will intermittently drive the transmission gear to rotate through the meshing relationship between the local gear and the transmission gear. The transmission gear meshes with the internal gear ring, and the ring will rotate synchronously with the transmission gear. Step S43: The ring rotates, changing the position of the waist-shaped groove, which in turn changes the position of the linkage wheel. The linkage wheel drives the moving seat to expand inside and outside the slide groove, thereby causing the contact surface between the flexible grinding disc and the impeller blade to expand intermittently. Step S44: While the contact surface between the flexible grinding disc and the impeller blade continues to descend, the contact surface intermittently expands outward, thereby enabling the flexible grinding disc to grind the impeller blade from bottom to top along the arc surface of the impeller blade.

[0008] A surface treatment apparatus for a submersible electric pump impeller, wherein the process applies the surface treatment process for submersible electric pump impellers as described above, and the process includes: A workbench has a fixed plate fixedly installed inside it. A drive assembly is provided at the bottom of the fixed plate. Several movable seats are slidably installed on the workbench. A support frame is rotatably installed on the movable seat. The support frame is driven to move by the drive assembly and has a built-in output source for driving the rotation of the support frame. A support frame is slidably installed on the support frame. A telescopic component for driving the movement of the support frame is installed on the support frame. A flexible grinding disc is rotatably installed at one end of the support frame. A transmission assembly for driving the rotation of the flexible grinding disc is provided on the support frame. A lifting platform is slidably mounted on a fixed plate and is driven to move up and down by a drive assembly. An impeller body is mounted on the lifting platform, and several impeller blades are fixedly mounted on the impeller body. The area between two adjacent impeller blades is a grinding area, and each grinding area corresponds to a flexible grinding disc. The flexible grinding disc is in contact with the arc surface of the impeller blade.

[0009] As a further embodiment of the present invention: the driving assembly includes a threaded rod, a guide rod, and a rotating wheel. The threaded rod and the guide rod are both slidably connected to the fixed plate and both are fixedly connected to the bottom of the lifting platform. The rotating wheel is rotatably mounted on the bottom of the fixed plate and is driven to rotate by an external driving source. It is threadedly connected to the threaded rod.

[0010] As a further embodiment of the present invention: the driving assembly further includes a slide groove, a linkage wheel, a ring, and an oblong groove. The slide groove is formed on the worktable and is slidably connected to the movable seat. The ring is rotatably installed at the bottom of the worktable. The rotating wheel drives the ring to rotate through the linkage assembly. The oblong groove is formed on the ring and is arranged at an angle. The linkage wheel is slidably connected to the oblong groove and is fixedly connected to the movable seat.

[0011] As a further embodiment of the present invention: the linkage component includes a local gear, a transmission gear, and an internal gear ring. The local gear is fixedly mounted on the rotating wheel, the internal gear ring is fixedly mounted on the inner ring of the circular ring, and the transmission gear is rotatably mounted on the bottom of the fixed plate. Both the local gear and the internal gear ring mesh with the transmission gear.

[0012] As a further embodiment of the present invention: the transmission assembly includes a driving wheel, a driven wheel, a belt and a driving component. The driven wheel and the driving wheel are both rotatably mounted on the support frame, and the driven wheel is connected to the driving wheel via the belt. The driving component is fixedly mounted on the support frame, and the connection between the two is far away from the impeller blades. The driving component drives the driving wheel to rotate.

[0013] As a further aspect of the present invention, there is a gap between the fixing plate and the worktable.

[0014] The beneficial effects of this invention are: 1. In this invention, a flexible grinding disc is provided between every two adjacent impeller blades. When the flexible grinding disc comes into contact with the impeller blade, its unique flexible material allows it to deform, thereby closely conforming to the complex arc surface of the impeller blade. This conformation not only ensures the precision of grinding but also greatly improves grinding efficiency. Furthermore, during the grinding process, the movement and coordination of the lifting platform and the flexible grinding disc ensure that each flexible grinding disc simultaneously performs the same grinding on each impeller blade, guaranteeing consistent grinding progress. The flexible grinding discs also ensure consistent grinding on the impeller blades. The grinding trajectory extends outwards and downwards along the arc surface of the impeller blades, then contracts inwards and upwards, repeating this process. With the help of flexible grinding discs, the impeller blades can be ground from all angles by each disc. Furthermore, by changing the angle of the flexible grinding discs, the blades on the other side can be ground quickly. The grinding of each flexible grinding disc is carried out simultaneously, which avoids the low efficiency of manual grinding and the inconsistent grinding effect on each impeller blade, ensuring that the shape of the impeller blades remains consistent before and after grinding. 2. In this invention, when the ring rotates under the drive of the linkage component, the position of the waist-shaped groove changes, thereby causing the linkage wheel to slide in the waist-shaped groove. The linkage wheel then causes the movable seat to slide in the slide groove, thereby controlling the change in the distance between the movable seat and the impeller body, which in turn controls the change in the grinding position of the flexible grinding disc on the impeller blade. When the ring rotates, it causes the position of each linkage wheel to change synchronously, thereby controlling the movable seat to move synchronously. This achieves the same displacement of each flexible grinding disc, which can improve the consistency of the grinding effect on each impeller blade. 3. In this invention, the continuous rotation of the impeller drives the transmission gear to rotate intermittently, which in turn drives the ring to rotate intermittently. That is, as the impeller body continuously rises and falls, the position of the flexible grinding disc moves outward intermittently. The intermittent movement of the flexible grinding disc can, on the one hand, avoid collision with the impeller body by adjusting the movement according to the curvature of the impeller body; on the other hand, it can prevent both the flexible grinding disc and the impeller blades from being in a state of displacement. When the position of the flexible grinding disc is fixed, the grinding effect on the impeller blades will be better. Attached Figure Description

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the workbench and the fixed plate in this invention; Figure 3 This is a schematic diagram of the support frame structure in this invention; Figure 4This is a schematic diagram of the structure of the bottom of the workbench in this invention; Figure 5 This is a schematic diagram of the impeller body in this invention; Figure 6 This is a cross-sectional structural schematic diagram of the workbench in this invention.

[0017] In the diagram: 1. Workbench; 2. Lifting platform; 201. Threaded rod; 202. Guide rod; 3. Impeller body; 301. Impeller blade; 302. Grinding area; 4. Flexible grinding disc; 5. Bearing frame; 6. Support frame; 601. Drive wheel; 602. Driven wheel; 603. Belt; 604. Drive component; 7. Telescopic component; 8. Moving seat; 801. Linkage wheel; 9. Slide groove; 10. Fixed plate; 11. Ring; 1101. Internal gear ring; 1102. Waist-shaped groove; 12. Rotary wheel; 1201. Partial gear; 13. Transmission gear; 14. Clearance. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-6 As shown, the present invention relates to a surface treatment process for a submersible electric pump impeller, comprising the following steps: Step S1: Install the impeller body 3 to be polished onto the lifting platform 2; Step S2: Start the drive unit 604, which drives the flexible grinding disc 4 to rotate through the transmission assembly; Step S3: The built-in output source of the movable seat 8 drives the support frame 5 to adjust the angle on it, so that each flexible grinding disc 4 grinds the impeller blade 301 on one side of the grinding area 302. At this time, the flexible grinding disc 4 grinds the top of the connection between the impeller blade 301 and the impeller body 3. Step S4: The lifting platform 2 is driven to rise by the drive component, which in turn drives the impeller body 3 to move upward. At this time, the contact surface between the flexible grinding disc 4 and the impeller blade 301 moves downward. Meanwhile, the action of the linkage component will cause each moving seat 8 to expand outward. At this time, the contact surface between the flexible grinding disc 4 and the impeller blade 301 expands outward, so that the flexible grinding disc 4 can grind the impeller blade 301 from top to bottom along the arc surface of the impeller blade 301. Step S5: The telescopic component 7 extends, causing the support frame 6 to move on the bearing frame 5, thereby causing the contact area between the flexible grinding disc 4 and the impeller blade 301 to move away from the connection between the impeller blade 301 and the impeller body 3. Step S6: The lifting platform 2 is lowered by the drive component, and at the same time, the linkage component causes each moving seat 8 to retract inward, so that the flexible grinding disc 4 grinds the impeller blade 301 from bottom to top along the arc surface of the impeller blade 301. Step S7: Repeat steps S4-S6 until the entire arc surface of the impeller blade 301 on one side of the grinding area 302 is ground. At this time, the contact point between the flexible grinding disc 4 and the impeller blade 301 is located at the highest horizontal height of the impeller blade 301 and is far away from the connection between the impeller blade 301 and the impeller body 3.

[0020] like Figures 1-6 As shown, in a preferred embodiment of the present invention, the following steps are further included after step S7: Step S8: The flexible grinding disc 4 moves closer to the impeller body 3 by retracting the telescopic component 7; Step S9: The built-in output source of the movable seat 8 drives the support frame 5 to adjust its angle, so that each flexible grinding disc 4 grinds the impeller blade 301 on the other side of the grinding area 302. Step S10: Repeat steps S4-S6 until the entire arc surface of the impeller blade 301 on the other side of the grinding area 302 is ground to complete the grinding operation.

[0021] like Figures 1-6 As shown, in a preferred embodiment of the present invention, step S4 specifically includes the following steps: Step S41: The external drive source drives the rotating wheel 12 to rotate, which in turn drives the threaded rod 201 to move upward, thereby causing the lifting platform 2 to move the impeller body 3 upward, and the contact surface between the flexible grinding disc 4 and the impeller blade 301 to move downward. Step S42: The rotation of the wheel 12 will intermittently drive the transmission gear 13 to rotate through the meshing relationship between the local gear 1201 and the transmission gear 13. The transmission gear 13 meshes with the internal gear ring 1101, and the ring 11 will rotate synchronously with the transmission gear 13. Step S43: The ring 11 rotates, causing the position of the waist-shaped groove 1102 to change, which in turn causes the position of the linkage wheel 801 to change. The linkage wheel 801 drives the moving seat 8 to expand inside and outside the slide groove 9, thereby causing the contact surface between the flexible grinding disc 4 and the impeller blade 301 to expand intermittently. Step S44: While the contact surface between the flexible grinding disc 4 and the impeller blade 301 continues to descend, the contact surface intermittently expands outward, thereby enabling the flexible grinding disc 4 to grind the impeller blade 301 from bottom to top along the arc surface of the impeller blade 301.

[0022] Please see Figures 1-6As shown, this invention relates to a surface treatment device for a submersible electric pump impeller. The process employs the surface treatment process for submersible electric pump impellers described in the above embodiments, and the process includes: A workbench 1 has a fixed plate 10 fixedly installed inside it. A drive assembly is provided at the bottom of the fixed plate 10. Several movable seats 8 are slidably installed on the workbench 1. A support frame 5 is rotatably installed on the movable seat 8. It is driven to move by the drive assembly and has a built-in output source for driving the rotation of the support frame 5. A support frame 6 is slidably installed on the support frame 5. A telescopic component 7 for driving the movement of the support frame 6 is installed on it. A flexible grinding disc 4 is rotatably installed at one end of the support frame 6. A transmission assembly for driving the rotation of the flexible grinding disc 4 is provided on it. The lifting platform 2 is slidably mounted on the fixed plate 10 and is driven to move up and down by the drive assembly. An impeller body 3 is mounted on the lifting platform 2. Several impeller blades 301 are fixedly mounted on the impeller body 3. The area between two adjacent impeller blades 301 is a grinding area 302. Each grinding area 302 corresponds to a flexible grinding disc 4. The flexible grinding disc 4 is in contact with the arc surface of the impeller blade 301.

[0023] In one embodiment, the built-in output source can be a servo motor, a motor, or other components, or other mechanisms capable of rotational motion. This embodiment does not impose specific limitations on this component. The telescopic component 7 can be an electric cylinder, an electric telescopic rod, or other components capable of linear motion. This embodiment does not impose specific limitations on this component. In practical application, the impeller body 3 to be polished is first installed on the lifting platform 2. The flexible polishing disc 4 is rotated by the transmission component. The built-in output source drives the support frame 5 to adjust the angle on the moving seat 8 so that each flexible polishing disc 4 polishes the impeller blade 301 on one side of the polishing area 302. At this time, the flexible polishing disc 4 polishes the top of the connection between the impeller blade 301 and the impeller body 3. Subsequently, the lifting platform 2 is raised by the drive component, which in turn moves the impeller body 3 upward. At this time, the contact surface between the flexible grinding disc 4 and the impeller blade 301 moves downward, while the linkage component causes each moving seat 8 to expand outward. This expands the contact surface between the flexible grinding disc 4 and the impeller blade 301, allowing the flexible grinding disc 4 to grind the impeller blade 301 from top to bottom along the arc surface of the impeller blade 301. Then, the telescopic component 7 extends, causing the support frame 6 to move on the carrier frame 5, thereby moving the contact area between the flexible grinding disc 4 and the impeller blade 301 away from the impeller blade. The direction of the connection between 301 and the impeller body 3 moves, and the lifting platform 2 is driven to descend through the drive component. At the same time, the linkage component will cause each moving seat 8 to retract inward, so that the flexible grinding disc 4 can grind the impeller blade 301 from bottom to top along the arc surface of the impeller blade 301. This operation is repeated until the flexible grinding disc 4 grinds the entire arc surface of the impeller blade 301 on one side of the grinding area 302. At this time, the contact point between the flexible grinding disc 4 and the impeller blade 301 is located at the highest point of the horizontal height of the impeller blade 301 and is far away from the connection between the impeller blade 301 and the impeller body 3. Secondly, by retracting the telescopic component 7, the flexible grinding disc 4 moves towards the impeller body 3. Then, by changing the angle of the support frame 5, each flexible grinding disc 4 grinds the impeller blade 301 on the other side of the grinding area 302. The above grinding operation on the impeller blade 301 is repeated until the entire arc surface of the impeller blade 301 on the other side of the grinding area 302 is ground, thus completing the grinding operation. A flexible grinding disc 4 is selected. When the flexible grinding disc 4 comes into contact with the impeller blade 301, it deforms, thus better conforming to the arc surface of the impeller blade 301. Furthermore, the contact surface between the flexible grinding disc 4 and the impeller blade 301 can move outwards while moving downwards, further conforming to the curvature of the impeller blade 301. This avoids the flexible grinding disc 4 colliding with the arc surface of the impeller body 3 when moving directly downwards. The reciprocating movement of the flexible grinding disc 4 along the arc surface of the impeller blade 301 from top to bottom expands the grinding range to the entire surface of the impeller blade 301, thus avoiding the formation of grinding dead angles. During automated grinding, each impeller blade 301 can be ground simultaneously, and the angle and position of contact between each flexible grinding disc 4 and the impeller blade 301 are consistent. This avoids the low efficiency of manual grinding and the inconsistent grinding effect of each impeller blade 301, ensuring that the shape of the impeller blade 301 remains consistent before and after grinding.

[0024] like Figures 4-6As shown, in a preferred embodiment of the present invention, the drive assembly includes a threaded rod 201, a guide rod 202 and a rotating wheel 12. The threaded rod 201 and the guide rod 202 are both slidably connected to the fixed plate 10 and both are fixedly connected to the bottom of the lifting platform 2. The rotating wheel 12 is rotatably mounted on the bottom of the fixed plate 10, is driven to rotate by an external drive source, and is threadedly connected to the threaded rod 201.

[0025] In one embodiment, the external drive source may be a servo motor, a motor, or other components, or other mechanisms capable of rotational motion. This embodiment does not impose specific limitations on these components.

[0026] In practical application, the rotating wheel 12 is driven to rotate by an external drive source. Since the rotating wheel 12 is threadedly connected to the threaded rod 201, and since the threaded rod 201 and the guide rod 202 are slidably connected on the fixed plate 10, the rotation of the rotating wheel 12 will drive the threaded rod 201 to move up and down, thereby driving the lifting platform 2 to move up and down.

[0027] like Figure 4 As shown, in a preferred embodiment of the present invention, the driving assembly further includes a slide groove 9, a linkage wheel 801, a ring 11, and a waist-shaped groove 1102. The slide groove 9 is formed on the worktable 1 and is slidably connected to the movable seat 8. The ring 11 is rotatably mounted on the bottom of the worktable 1. The rotating wheel 12 drives the ring 11 to rotate through the linkage assembly. The waist-shaped groove 1102 is formed on the ring 11 and is arranged at an angle. The linkage wheel 801 is slidably connected to the waist-shaped groove 1102 and is fixedly connected to the movable seat 8.

[0028] In one embodiment, when the ring 11 rotates under the drive of the linkage component, the position of the waist-shaped groove 1102 changes, thereby causing the linkage wheel 801 to slide within the waist-shaped groove 1102. The linkage wheel 801 then causes the movable seat 8 to slide within the sliding groove 9, thereby controlling the change in the distance between the movable seat 8 and the impeller body 3. This means controlling the change in the grinding position of the flexible grinding disc 4 on the impeller blade 301. When the ring 11 rotates, it causes the position of each linkage wheel 801 to change synchronously, thereby controlling the movable seat 8 to move synchronously. This achieves the same displacement for each flexible grinding disc 4, which improves the consistency of the grinding effect on each impeller blade 301.

[0029] like Figure 4 As shown, in a preferred embodiment of the present invention, the linkage component includes a local gear 1201, a transmission gear 13, and an internal gear ring 1101. The local gear 1201 is fixedly mounted on the rotating wheel 12, the internal gear ring 1101 is fixedly mounted on the inner ring of the circular ring 11, and the transmission gear 13 is rotatably mounted on the bottom of the fixed plate 10. Both the local gear 1201 and the internal gear ring 1101 mesh with the transmission gear 13.

[0030] In practical application, when the rotating wheel 12 drives the lifting platform 2 to rise and fall, the rotating wheel 12 needs to rotate continuously. When the rotating wheel 12 rotates, when the local gear 1201 meshes with the transmission gear 13, its rotation will drive the transmission gear 13 to rotate. The transmission gear 13 and the internal gear ring 1101 rotate, thereby driving the ring 11 to rotate. In this way, the position of the flexible grinding disc 4 can be changed while the position of the impeller body 3 is controlled to change. After multiple position changes, the entire arc surface of the impeller blade 301 can be ground. During one revolution of the local gear 1201, when the local gear 1201 rotates away from the transmission gear 13, its rotation will not drive the transmission gear 13 to rotate. At this time, both the transmission gear 13 and the internal gear ring 1101 are in a stationary state. This means that when the rotor 12 rotates continuously, it will drive the transmission gear 13 to rotate intermittently, which in turn will drive the ring 11 to rotate intermittently. In other words, when the impeller body 3 continues to rise and fall, the position of the flexible grinding disc 4 moves outward intermittently. The intermittent movement of the flexible grinding disc 4 can, on the one hand, avoid collision with the impeller body 3 by adjusting the curvature of the impeller body 3; on the other hand, it can prevent the flexible grinding disc 4 and the impeller blade 301 from being in a displacement state. When the position of the flexible grinding disc 4 is fixed, the grinding effect on the impeller blade 301 will be better.

[0031] like Figures 1-3 As shown, in a preferred embodiment of the present invention, the transmission assembly includes a drive wheel 601, a driven wheel 602, a belt 603, and a drive member 604. The driven wheel 602 and the drive wheel 601 are both rotatably mounted on the support frame 6, and the driven wheel 602 is connected to the drive wheel 601 via the belt 603. The drive member 604 is fixedly mounted on the support frame 6, and the connection between the two is away from the impeller blade 301. The drive member 604 drives the drive wheel 601 to rotate.

[0032] In one embodiment, the driving component 604 may be a servo motor, a motor, or other components capable of rotational motion. This embodiment does not impose specific limitations on this component.

[0033] In practical application, the drive member 604 drives the drive wheel 601 to rotate, and the drive wheel 601 drives the driven wheel 602 to rotate through the belt 603, which in turn drives the flexible grinding disc 4 to rotate. The connection between the support frame 6 and the drive member 604 is far away from the impeller blade 301 to avoid the drive member 604 colliding with the impeller blade 301 and causing damage when the flexible grinding disc 4 grinds the impeller blade 301.

[0034] like Figure 2As shown, in a preferred embodiment of the present invention, there is a gap 14 between the fixing plate 10 and the worktable 1.

[0035] In one embodiment, a lubricating oil adding device is provided above the workbench 1 to add lubricating oil to the contact surface between the flexible grinding disc 4 and the impeller blade 301 during grinding, thereby achieving a lubrication effect. It should be noted that the lubricating oil adding device described in this invention is prior art, and this invention does not improve upon it. Therefore, it is not necessary to disclose its specific mechanical and circuit structures, and this does not affect the integrity of this invention.

[0036] In practical application, when lubricating oil is added during grinding, the lubricating oil will slide down along the arc surface of the impeller body 3 and the impeller blades 301, and slide out of the worktable 1 through the gap 14, which improves the outlet of lubricating oil collection and prevents lubricating oil from accumulating in the worktable 1.

[0037] The working principle of this invention: The above embodiments of this invention provide a surface treatment process for a submersible electric pump impeller. The impeller body 3 to be polished is installed on the lifting platform 2. The transmission component drives the flexible polishing disc 4 to rotate. The built-in output source drives the support frame 5 to adjust the angle on the moving seat 8, so that each flexible polishing disc 4 polishes the impeller blade 301 on one side of the polishing area 302. Subsequently, the driving component drives the lifting platform 2 to rise, thereby driving the impeller body 3 to move upward. At this time, the contact surface between the flexible polishing disc 4 and the impeller blade 301 moves downward. At the same time, the linkage component causes each moving seat 8 to expand outward. At this time, the contact surface between the flexible polishing disc 4 and the impeller blade 301 expands outward, so that the flexible polishing disc 4 polishes the impeller blade 301 from top to bottom along the arc surface of the impeller blade 301. Then, the telescopic component 7 extends, driving the support frame 6 to move on the support frame 5, thereby... The flexible grinding disc 4 is moved away from the contact area between the impeller blade 301 and the impeller body 3, and the lifting platform 2 is lowered by the drive component. At the same time, the linkage component causes each moving seat 8 to retract inward, so that the flexible grinding disc 4 grinds the impeller blade 301 from bottom to top along the arc surface of the impeller blade 301. This operation is repeated until the flexible grinding disc 4 grinds the entire arc surface of the impeller blade 301 on one side of the grinding area 302. Next, the telescopic component 7 retracts, so that the flexible grinding disc 4 moves closer to the impeller body 3. Then, the angle of the support frame 5 is changed so that each flexible grinding disc 4 grinds the impeller blade 301 on the other side of the grinding area 302. The above grinding operation is repeated until the entire arc surface of the impeller blade 301 on the other side of the grinding area 302 is ground, thus completing the grinding operation.

[0038] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A surface treatment process for a guide vane of a submersible electric pump, characterized in that, Includes the following steps: Step S1: Install the impeller body (3) to be polished on the lifting platform (2); Step S2: Start the drive unit (604) to drive the flexible grinding disc (4) to rotate through the transmission assembly; Step S3: The built-in output source of the movable seat (8) drives the carrier frame (5) to adjust the angle on it, so that each flexible grinding disc (4) grinds the impeller blade (301) on one side of the grinding area (302). At this time, the flexible grinding disc (4) grinds the top of the connection between the impeller blade (301) and the impeller body (3). Step S4: The lifting platform (2) is driven to rise by the drive component, which in turn drives the impeller body (3) to move upward. At this time, the contact surface between the flexible grinding disc (4) and the impeller blade (301) moves downward. Meanwhile, the action of the linkage component will cause each moving seat (8) to expand outward. At this time, the contact surface between the flexible grinding disc (4) and the impeller blade (301) expands outward, so that the flexible grinding disc (4) can grind the impeller blade (301) from top to bottom along the arc surface of the impeller blade (301). Step S5: Extend the telescopic component (7) to move the support frame (6) on the bearing frame (5), thereby causing the contact area of ​​the flexible grinding disc (4) with the impeller blade (301) to move away from the connection between the impeller blade (301) and the impeller body (3); Step S6: Drive the lifting platform (2) to descend by the drive component. At the same time, the linkage component will cause each moving seat (8) to retract inward, so that the flexible grinding disc (4) can grind the impeller blade (301) from bottom to top along the arc surface of the impeller blade (301). Step S7: Repeat steps S4-S6 until the entire arc surface of the impeller blade (301) on one side of the grinding area (302) is ground. At this time, the contact point between the flexible grinding disc (4) and the impeller blade (301) is located at the highest horizontal height of the impeller blade (301) and is far away from the connection between the impeller blade (301) and the impeller body (3). The surface treatment process for the impeller of the submersible electric pump is applied to a surface treatment device for the impeller of the submersible electric pump, the device comprising: A workbench (1) has a fixed plate (10) fixedly installed inside it. A drive assembly is provided at the bottom of the fixed plate (10). Several movable seats (8) are slidably installed on the workbench (1). A support frame (5) is rotatably installed on the movable seat (8). It is driven to move by the drive assembly. An internal output source for driving the support frame (5) to rotate is provided inside. A support frame (6) is slidably installed on the support frame (5). A telescopic component (7) for driving the support frame (6) to move is installed on it. A flexible grinding disc (4) is rotatably installed at one end of the support frame (6). A transmission assembly for driving the flexible grinding disc (4) to rotate is provided on it. The lifting platform (2) is slidably mounted on the fixed plate (10) and is driven to lift by the drive assembly. The lifting platform (2) is equipped with an impeller body (3) and a number of impeller blades (301) are fixedly mounted on the impeller body (3). The area between two adjacent impeller blades (301) is a grinding area (302). Each grinding area (302) corresponds to a flexible grinding disc (4). The flexible grinding disc (4) is in cooperation with the arc surface of the impeller blade (301). The drive assembly includes a threaded rod (201), a guide rod (202), and a rotating wheel (12). The threaded rod (201) and the guide rod (202) are slidably connected to the fixed plate (10) and are both fixedly connected to the bottom of the lifting platform (2). The rotating wheel (12) is rotatably mounted on the bottom of the fixed plate (10), is driven to rotate by an external drive source, and is threadedly connected to the threaded rod (201). The drive assembly also includes a slide groove (9), a linkage wheel (801), a ring (11), and a waist-shaped groove (1102). The slide groove (9) is opened on the workbench (1) and is slidably connected to the movable seat (8). The ring (11) is rotatably installed at the bottom of the workbench (1). The rotating wheel (12) drives the ring (11) to rotate through the linkage assembly. The waist-shaped groove (1102) is opened on the ring (11) and is arranged at an angle. The linkage wheel (801) is slidably connected to the waist-shaped groove (1102) and is fixedly connected to the movable seat (8). The linkage assembly includes a local gear (1201), a transmission gear (13), and an internal gear ring (1101). The local gear (1201) is fixedly mounted on the rotating wheel (12), the internal gear ring (1101) is fixedly mounted on the inner ring of the ring (11), and the transmission gear (13) is rotatably mounted on the bottom of the fixed plate (10). Both the local gear (1201) and the internal gear ring (1101) mesh with the transmission gear (13).

2. The surface treatment process for a submersible electric pump impeller according to claim 1, characterized in that, Following step S7, the following steps are also included: Step S8: The flexible grinding disc (4) moves closer to the impeller body (3) by retracting the telescopic component (7); Step S9: The built-in output source of the movable seat (8) drives the carrier frame (5) to adjust the angle on it, so that each flexible grinding disc (4) grinds the impeller blade (301) on the other side of the grinding area (302); Step S10: Repeat steps S4-S6 until the entire arc surface of the impeller blade (301) on the other side of the grinding area (302) is ground to complete the grinding operation.

3. The surface treatment process for the impeller of a submersible electric pump according to claim 1, characterized in that, Step S4 specifically includes the following steps: Step S41: Drive the rotating wheel (12) to rotate through the external drive source, thereby driving the threaded rod (201) to move upward, so that the lifting platform (2) drives the impeller body (3) to move upward, and the contact surface between the flexible grinding disc (4) and the impeller blade (301) moves downward. Step S42: The rotation of the wheel (12) will intermittently drive the transmission gear (13) to rotate through the meshing relationship between the local gear (1201) and the transmission gear (13). The transmission gear (13) meshes with the internal gear ring (1101), and the ring (11) will rotate synchronously with the transmission gear (13). Step S43: The ring (11) rotates, causing the waist-shaped groove (1102) to change position, which in turn causes the linkage wheel (801) to change position. The linkage wheel (801) drives the moving seat (8) to expand inside and outside the slide groove (9), thereby causing the contact surface between the flexible grinding disc (4) and the impeller blade (301) to expand intermittently. Step S44: While the contact surface between the flexible grinding disc (4) and the impeller blade (301) continues to descend, the contact surface expands intermittently, thereby enabling the flexible grinding disc (4) to grind the impeller blade (301) from bottom to top along the arc surface of the impeller blade (301).

4. The surface treatment process for a submersible electric pump impeller according to claim 1, characterized in that, The transmission assembly includes a drive wheel (601), a driven wheel (602), a belt (603), and a drive member (604). The driven wheel (602) and the drive wheel (601) are both rotatably mounted on the support frame (6), and the driven wheel (602) is connected to the drive wheel (601) via the belt (603). The drive member (604) is fixedly mounted on the support frame (6), and the connection between the two is far away from the impeller blade (301). The drive member (604) drives the drive wheel (601) to rotate.

5. The surface treatment process for a submersible electric pump impeller according to claim 1, characterized in that, There is a gap (14) between the fixed plate (10) and the workbench (1).

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