A water pump impeller grinding device

Abstract

A water pump impeller grinding device belongs to the technical field of impeller grinding and is used to grind the inner wall of the impeller. It includes: a support unit, a drive unit, an elastic ring sleeve and an abrasive supply unit. The impeller is arranged in the inner cavity of the support unit; the drive unit is arranged above the support unit; the elastic ring sleeve is controlled by the drive unit to achieve expansion and contraction and lifting and lowering movement, and the elastic ring sleeve is movably sleeved on the side wall of the impeller; the abrasive supply unit is arranged above the impeller, and the abrasive supply unit is used to introduce an abrasive fluid into the inner cavity of the impeller. The present invention injects a highly fluid abrasive medium into the inner cavity of the impeller, utilizes the adaptive filling characteristics of the fluid, and makes the abrasive uniformly cover the curved blade surface and the entire inner cavity wall, thereby achieving all-round and dead-angle-free grinding of the impeller, eliminating the secondary processing link of the traditional process, effectively streamlining the process flow, reducing equipment and labor costs, and significantly improving the overall grinding efficiency and processing quality consistency of the impeller.

Description

Technical Field

[0001] The invention belongs to the technical field of impeller grinding, and in particular relates to a water pump impeller grinding device. Background Art

[0002] Water pump impeller grinding is a key process to ensure the normal performance of the water pump. Through grinding, burrs, casting defects and oxide layers on the impeller surface can be removed, the blade profile and surface roughness can be optimized, thereby reducing fluid resistance, vibration and noise, extending service life, and ensuring stable and efficient operation of the water pump.

[0003] Related art (Chinese invention patent publication number CN116833850B) discloses a water pump impeller grinding device, comprising a base, a guide frame, a transmission assembly, a support assembly, a reversing assembly, and a grinding wheel assembly. The guide frame is mounted on the base, the grinding wheel assembly is slidably mounted on the base, the transmission assembly provides driving force for the grinding wheel assembly, the support assembly connects the base and the grinding wheel assembly, and the reversing assembly changes the direction of movement of the grinding wheel assembly. The grinding wheel assembly comprises a first grinding wheel and a second grinding wheel, which grind the workpiece as they move along the guide frame. The guide frame is provided to accommodate workpieces of the same model but of different sizes; the first and second grinding wheels are configured to rotate in opposite directions relative to their travel direction, resulting in a better grinding effect; and the reversing assembly enables the grinding wheel assembly to automatically turn around, thereby achieving repeated grinding of the workpiece.

[0004] In the above-mentioned grinding technical scheme, the grinding process of the impeller is realized by moving the grinding component along the blade surface of the impeller inner cavity, but the blades in the impeller inner cavity are arc-shaped. When the above-mentioned scheme is used for grinding, although the grinding component can cover the side walls of the blades in the impeller inner cavity, it is difficult to fully grind the inner wall of the impeller inner cavity non-blade area, that is, there will be a grinding blind area, which makes it difficult for the grinding device to realize the integrated grinding of the impeller inner wall and blades at one time. It is necessary to use other special grinding devices to perform secondary processing on the residual area, which increases the complexity and processing cost of the impeller grinding process. Summary of the Invention

[0005] In view of the problem that the existing grinding devices in the prior art are difficult to achieve integrated grinding of the impeller inner wall and blades in one go, and there will be grinding blind areas, which requires the use of other special grinding devices to perform secondary processing on the residual areas, increasing the complexity of the impeller grinding process and the processing cost, the present invention provides a water pump impeller grinding device, which injects abrasive media with high fluidity into the impeller cavity and utilizes the adaptive filling characteristics of the fluid to make the abrasive evenly cover the curved blade surface and the entire wall of the inner cavity, thereby achieving all-round grinding of the impeller without dead angles, eliminating the secondary processing links of the traditional process, effectively streamlining the process, reducing equipment and labor costs, and significantly improving the overall grinding efficiency and processing quality consistency of the impeller. The specific technical solution is as follows:

[0006] A water pump impeller grinding device, used for grinding the inner wall of the impeller, comprising: a support unit, a drive unit, an elastic ring sleeve, and an abrasive supply unit, wherein the impeller is arranged in the inner cavity of the support unit; the drive unit is arranged above the support unit; the elastic ring sleeve is controlled by the drive unit to achieve expansion, contraction, and lifting and lowering movement, and the elastic ring sleeve is movably sleeved on the side wall of the impeller; the abrasive supply unit is arranged above the impeller, and the abrasive supply unit is used to introduce an abrasive fluid into the inner cavity of the impeller;

[0007] The support unit includes: an annular seat, a first mounting plate, an annular bottom plate, a through slot and a support leg. The annular seat is a hollow annular body; the first mounting plate is fixedly mounted on the top of the side wall of the annular seat; the annular bottom plate is fixedly mounted on the bottom end of the inner wall of the annular seat, and the center of the annular bottom plate is set as a hollow inner cavity; the through slot is opened from top to bottom on the annular bottom plate; the support leg is fixedly and vertically mounted on the bottom end of the annular seat;

[0008] It also includes a supporting assembly, which includes: a second hydraulic cylinder, a supporting plate and a supporting seat, the second hydraulic cylinder is fixedly mounted on the lower surface of the first mounting plate; the supporting plate is fixedly mounted on the bottom output end of the second hydraulic cylinder; the supporting seat is fixedly mounted on the side wall of the supporting plate, the supporting seat is vertically inserted into the hollow inner cavity of the annular bottom plate, and the impeller is placed in the inner cavity of the supporting seat, and the vertical height of the supporting seat exceeds the height of the blades in the inner cavity of the impeller.

[0009] In the above technical solution, the driving unit includes a power assembly, and the power assembly includes: a first hydraulic cylinder, a second mounting plate and a driving ring, the first hydraulic cylinder is fixedly connected to the support unit; the second mounting plate is installed at the top output end of the first hydraulic cylinder; the driving ring is installed on the side wall of the second mounting plate, and the driving ring is located directly above the support unit.

[0010] In the above technical solution, the driving unit further includes multiple groups of driving components, and the multiple groups of driving components are equidistantly arranged circumferentially along the driving ring. The power component is used to drive the multiple groups of driving components to apply the same acting force to the elastic ring sleeve. Each group of driving components includes: a first support arm, a fixing plate, a first chute, a second chute, a sliding rod, a first U-shaped frame, a connecting plate, a connecting seat, a first driving frame, a second driving frame, and a second U-shaped frame. One end of the first support arm is fixedly connected to the support unit; the fixing plate is fixedly connected to the other end of the first support arm, and the fixing plate is arranged vertically; the first chute and the second chute are formed by being penetrated through the fixing plate, and the first chute and the second chute form a hook-shaped chute with a communicating inner cavity; the sliding rod penetrates through the inner cavity of the hook-shaped chute; the first U-shaped frame is U-shaped, and the sliding rod is installed at the U-shaped opening of the first U-shaped frame; the connecting plate is installed on the side wall of the first U-shaped frame on the side背离 the sliding rod, and the connecting plate is arranged in an inverted U shape; the connecting seat is sleeved on the connecting plate, and the side wall of the connecting seat is fixedly connected to the outer side wall of the elastic ring sleeve; the first driving frame and the second driving frame form a frame for the sliding rod to move, and there are two groups of the frames, and the two groups of frames are symmetrically sleeved at both ends of the sliding rod; the second U-shaped frame is fixedly and vertically installed at the top of the two groups of frames, and the top of the second U-shaped frame is fixedly connected to the lower surface of the driving ring.

[0011] In the above technical solution, the lateral dimension of the inner cavity of the second driving frame is larger than the span dimension of the second chute in the horizontal projection direction.

[0012] In the above technical solution, the abrasive supply unit includes: a second support arm, a connecting arm, a feeding cylinder, a connecting piece, a third hydraulic cylinder, a circular pressing piece, and a discharging cylinder. There are multiple second support arms equidistantly arranged circumferentially along the support unit, and one end of each second support arm is fixedly installed on the support unit; one end of the connecting arm is fixedly installed on the side wall of the second support arm; the feeding cylinder is fixedly installed at the other end of the connecting arm, and the feeding cylinder is arranged vertically; the connecting piece is fixedly installed at the other end of the second support arm, and the connecting piece is coaxially arranged with the feeding cylinder; the third hydraulic cylinder is fixedly installed at the top of the connecting piece; the circular pressing piece is fixedly installed at the bottom output end of the third hydraulic cylinder, and the circular pressing piece is arranged to move along the inner wall of the feeding cylinder; the discharging cylinder is arranged at the bottom of the feeding cylinder, and the discharging cylinder is coaxially arranged with the feeding cylinder.

[0013] In the above technical solution, a positioning unit is provided at the abrasive supply unit, and the positioning unit includes: a third mounting plate, a fourth hydraulic cylinder, a sleeve and a conical cylinder, the third mounting plate is fixedly installed on the side wall of the discharge barrel; the fourth hydraulic cylinder is fixedly and vertically installed on the lower surface of the third mounting plate; the sleeve is slidably mounted on the discharge barrel, and the bottom output end of the fourth hydraulic cylinder is fixedly connected to the outer side wall of the sleeve; the conical cylinder is fixedly installed at the bottom end of the sleeve, and the conical cylinder is funnel-shaped with a narrow upper part and a wide lower part, and the impeller, the conical cylinder, the sleeve and the discharge barrel are coaxially arranged.

[0014] In the above technical solution, an abrasive recovery unit is provided at the bottom end of the support unit, and the abrasive recovery unit includes: a collecting funnel, a guide tube and a solenoid valve. The collecting funnel is installed on the lower surface of the annular bottom plate, and the position of the collecting funnel corresponds to the through groove; the guide tube is connected to the inner cavity of the collecting funnel, and the guide tube is set in a Y shape; the solenoid valve is set at the bottom end of the guide tube.

[0015] In the above technical solution, the height of the elastic ring sleeve is greater than the height of the opening of the impeller side wall, and the inner diameter of the elastic ring sleeve in a free state is smaller than the outer diameter of the impeller.

[0016] Compared with the prior art, the water pump impeller grinding device of the present invention has the following beneficial effects:

[0017] 1. In response to the problems of incomplete impeller grinding area coverage caused by structural and motion trajectory limitations of traditional impeller grinding equipment, and the easy formation of grinding blind spots in the impeller's curved blades and non-blade areas in the inner cavity, which in turn requires multiple equipment to coordinate secondary processing, increasing process complexity and cost, the present invention injects abrasive media with high fluidity into the impeller's inner cavity and utilizes the fluid's adaptive filling characteristics to make the abrasive evenly cover the curved blade surface and the entire inner cavity wall, thereby achieving all-round grinding of the impeller without dead angles, eliminating the secondary processing links of the traditional process, effectively streamlining the process flow, reducing equipment and labor costs, and significantly improving the overall grinding efficiency and processing quality consistency of the impeller;

[0018] Second, since the arc-shaped blades in the inner cavity of the water pump impeller are distributed in a central radial divergent manner, there is a gradient characteristic of the spacing between adjacent arc-shaped blades, that is, the proximal end is narrow and the distal end is wide. Therefore, if the abrasive fluid is simply injected from the center of the impeller, it is easy for the abrasive fluid to escape quickly when it does not fully contact the side wall of the distal end of the blade, resulting in a grinding blind area on the side wall of the distal end of the arc-shaped blade due to insufficient fluid scouring, affecting the overall effect of impeller grinding. To address the above problem, the present invention is provided with a pre-sealing function. Before the abrasive fluid is injected into the impeller, the impeller side wall is sealed with an elastic ring sleeve to construct a closed processing space for the impeller side wall, ensuring that the abrasive fluid can completely fill the impeller inner cavity after injection and fully contact the side walls of various parts of the impeller blades, effectively solving the problem of insufficient abrasive fluid scouring in the open processing mode, eliminating the grinding blind area, effectively ensuring the impeller grinding effect, and significantly improving the integrity and uniformity of the impeller surface processing;

[0019] 3. In the present invention, by setting the driving unit, the elastic ring sleeve can automatically move downward, expand and be sleeved on the side wall of the impeller, so that the elastic ring sleeve adaptively wraps around the side wall of the impeller to form a pre-blocking structure, and can also automatically move upward and shrink back to the initial state to separate from the impeller side wall to achieve reset. That is, the present invention completes the reciprocating movement of one stroke through the output end of the first hydraulic cylinder, which can realize the downward expansion and sleeve and upward contraction and reset of the elastic ring sleeve on the impeller side wall. The whole process realizes fully automated closed-loop control without manual intervention. With precise motion control and structural coordination, the efficiency, accuracy and reliability of the blocking and resetting operations are ensured.

[0020] Fourth, in the present invention, a plurality of groups of connecting plates are equidistantly arranged on the side wall of the elastic sleeve along the circumferential direction. The side wall of the elastic sleeve is synchronously driven by the plurality of connecting plates to realize radial expansion and contraction of the elastic sleeve. This method can ensure that the elastic sleeve is uniformly stressed when covering the side wall of the impeller, effectively avoiding the installation tilt problem caused by manual operation deviation or asymmetric force, ensuring the coaxiality and sealing accuracy of the elastic sleeve and the impeller side wall, significantly improving the reliability and sealing of the pre-sealing process, and providing a stable closed working environment for grinding abrasive fluid in the impeller;

[0021] 5. The present invention constructs a mechanism for delayed residence of the elastic ring on the side wall of the impeller through the coordinated design of the second driving frame, the first slide groove, the second slide groove and other components. When the output end of the first hydraulic cylinder is reset upward, the second driving frame preferably moves upward independently relative to the slide rod, ensuring that the slide rod remains in its static state before the second driving frame touches the slide rod. Only after the bottom end of the inner wall of the second driving frame contacts the slide rod, the slide rod is driven to move upward synchronously for subsequent reset. This mechanism realizes the delayed residence of the slide rod at the bottom of the inner cavity of the second slide groove, and then realizes the delayed residence after the elastic ring completes the covering of the impeller side wall, providing sufficient filling time for the abrasive fluid to fill the impeller cavity, so that the abrasive fluid evenly covers the arc-shaped blade surface and the entire inner wall surface of the impeller cavity, thereby creating conditions for full-space abrasive fluid processing of the impeller.

[0022] 6. The abrasive supply unit of the present invention, as an abrasive fluid supply device, can efficiently deliver a sufficient amount of abrasive fluid to the impeller cavity. Its stable feeding performance ensures that the abrasive evenly covers the complex curved surfaces and every corner of the impeller cavity, providing a reliable material foundation for achieving high-precision, dead-angle-free grinding of the entire impeller surface.

[0023] 7. The present invention can achieve coaxial assembly of the impeller and the discharge barrel through the positioning unit. The precise guidance and automatic calibration mechanism of the positioning unit ensures that the impeller is centrally positioned at the bottom of the discharge barrel, so that the abrasive fluid can be accurately injected into the inner cavity along the central axis of the impeller top. This effectively avoids the problems of abrasive fluid cross-flow and leakage caused by assembly deviation, eliminates the processing blind area caused by docking misalignment, and provides reliable positioning guarantee for full-space abrasive flow processing of the impeller inner cavity.

[0024] 8. The present invention, through the coordinated design of the sleeve and the tapered barrel, has established an adaptive caliber adjustment and positioning function, thereby enabling coaxial assembly of impellers of different specifications and sizes with the bottom end of the discharge barrel, effectively compatibility with the grinding requirements of various impeller models; wherein, the tapered barrel adopts a funnel-shaped design that is narrow at the top and wide at the bottom. By utilizing the principle of conical surface matching, the top periphery of the impeller forms a self-sealing contact with the inner wall of the tapered barrel, ensuring that the abrasive fluid can be accurately injected into the impeller cavity in different caliber adaptation scenarios, providing reliable sealing protection and fluid transmission stability for efficient grinding of the impeller cavity;

[0025] IX. The support assembly of the present invention, as a supporting and positioning component, has a dual function: first, it provides a stable support platform for the impeller, assisting its precise placement into the inner cavity of the annular seat for abrasive flow machining; second, the vertical height of the support seat is set to be greater than the height of the blades in the inner cavity of the impeller, thereby forming a temporary buffer space for the abrasive fluid, ensuring that the abrasive fluid first fills the support seat chamber after the impeller inner cavity is machined. After the abrasive fluid reaches the critical position, it overflows through the top edge of the support seat to the annular bottom plate and enters the recycling process through the through groove. The provision of the support seat can effectively prevent the abrasive fluid from being emptied prematurely, ensuring that the inner cavity of the impeller is always fully covered by the abrasive during the machining process, significantly improving the grinding effect and machining quality consistency of the entire area of ​​the impeller surface;

[0026] 10. The present invention is provided with a support unit that has the dual functions of mechanical bearing and fluid diversion. On the one hand, it provides a stable mounting base for each functional component, ensuring the structural strength and assembly accuracy of the system. On the other hand, by providing components such as through grooves, a directional discharge channel for the abrasive fluid is constructed, achieving orderly diversion of the abrasive after processing.

[0027] 11. The abrasive recovery unit and abrasive fluid recovery device configured in the present invention is responsible for collecting the abrasive fluid discharged through the through slot after processing. Through the collecting structure of the collecting funnel and the diversion path of the diversion pipe, it can efficiently collect and temporarily store the used abrasive fluid, providing standardized material input for subsequent separation, purification, recycling and other processing processes, thereby realizing closed-loop management and resource utilization of the abrasive fluid processing process;

[0028] 12. The present invention constructs an integrated impeller grinding and processing system, which integrates the processes of impeller centering and clamping, abrasive flow processing of the entire surface of the impeller cavity, abrasive fluid supply and recovery processing into a continuous operation process, and achieves precise coordination and seamless connection between the various functional units, significantly improving processing efficiency, effectively reducing manual intervention and process turnover time, and providing a complete solution for efficient and high-quality manufacturing of impellers.

[0029] In summary, the present invention realizes high efficiency and precision in the whole process of impeller grinding: the adaptive filling characteristics of the abrasive medium fluid are utilized to eliminate the blind spots of traditional grinding, streamline the process flow, reduce equipment and labor costs, and improve grinding efficiency and quality consistency; the pre-sealing design and delayed residence mechanism ensure that the abrasive fluid fully covers all parts of the impeller cavity to ensure the grinding effect; the automated sealing component and multiple sets of synchronous drive settings achieve precise sealing, avoid manual operation deviation, and provide a stable closed environment for grinding; the adaptive caliber adjustment and positioning system is compatible with a variety of impeller models to ensure precise injection of abrasives; the supporting positioning components cooperate with the guide structure to prevent the abrasives from being emptied prematurely and ensure full-area grinding; in addition, the integrated design of the mechanical bearing and fluid guide of the support unit provides stable support for the system and realizes orderly discharge of abrasives; the recovery device realizes closed-loop management and resource utilization of abrasives; the various functional units are seamlessly connected to form an integrated operation process, which significantly improves the efficiency and quality of impeller grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of a water pump impeller grinding device according to embodiment 1 of the present invention;

[0031] Figure 2 This is a schematic diagram of the main structure of a water pump impeller grinding device according to embodiment 1 of the present invention;

[0032] Figure 3 This is an exploded view of the water pump impeller grinding device according to embodiment 1 of the present invention;

[0033] Figure 4 This is a schematic structural diagram of a drive unit according to embodiment 1 of the present invention;

[0034] Figure 5 This is a schematic structural diagram of the second drive frame according to embodiment 1 of the present invention;

[0035] Figure 6 This is an exploded view of the fixing plate, first U-shaped frame and other components of Example 1 of the present invention;

[0036] Figure 7 This is a structural diagram of Example 1 of the present invention when the first drive frame reaches the lowest limit state;

[0037] Figure 8 This is a schematic structural diagram of a support unit according to embodiment 1 of the present invention;

[0038] Figure 9 This is a schematic structural diagram of a supporting assembly according to embodiment 1 of the present invention;

[0039] Figure 10 This is a schematic structural diagram of an abrasive supply unit according to embodiment 1 of the present invention;

[0040] Figure 11This is a schematic diagram of the main structure of the positioning unit in Example 1 of the present invention;

[0041] Figure 12 This is a schematic diagram of the main cross-sectional structure of the positioning unit in Example 1 of the present invention;

[0042] Figure 13 This is a schematic structural diagram of a through slot according to embodiment 1 of the present invention;

[0043] Figure 14 Schematic diagram of the top view of the annular seat in embodiment 1 of the present invention;

[0044] Figure 15 This is a schematic structural diagram of an abrasive recovery unit according to embodiment 1 of the present invention;

[0045] Figure 16 This is a schematic diagram of the overall structure of a water pump impeller polishing device according to embodiment 2 of the present invention;

[0046] Figure 17 This is a schematic diagram of the main structure of the impeller of Example 2 of the present invention;

[0047] Figure 18 This is a schematic diagram of the main cross-sectional structure of a tapered tube according to embodiment 2 of the present invention;

[0048] Figures 1 to 18 1. Impeller, 2. Support unit, 2001. Annular seat, 2002. First mounting plate, 2003. Annular bottom plate, 2004. Through slot, 2005. Support leg, 3. Drive unit, 3001. First hydraulic cylinder, 3002. Second mounting plate, 3003. Drive ring, 3004. First support arm, 3005. Fixing plate, 3006. First slide, 3007. Second slide, 3008. Slide rod, 3009. First U-shaped frame, 3010. Connecting plate, 3011. Connecting seat, 3012. First drive frame, 3013. Second drive frame, 3014. Second U Frame, 4. Elastic ring sleeve, 5. Support assembly, 5001. Second hydraulic cylinder, 5002. Support plate, 5003. Support seat, 6. Abrasive supply unit, 6001. Second support arm, 6002. Connecting arm, 6003. Feed barrel, 6004. Connecting piece, 6005. Third hydraulic cylinder, 6006. Round pressing piece, 6007. Discharge barrel, 7. Positioning unit, 7001. Third mounting piece, 7002. Fourth hydraulic cylinder, 7003. Sleeve, 7004. Conical barrel, 8. Abrasive recovery unit, 8001. Collecting funnel, 8002. Guide pipe, 8003. Solenoid valve. DETAILED DESCRIPTION

[0049] The following is a combination of specific implementation cases and attached Figures 1 to 18 The present invention is further described below, but the present invention is not limited to these embodiments.

[0050] Example 1

[0051] Main references Figures 1 to 15 FIG. 1 is a schematic structural diagram of a grinding process for a small-diameter impeller 1 .

[0052] A water pump impeller grinding device is used to grind the inner wall of the impeller 1. In this application, the impeller 1 adopts a common impeller on the market, which includes two openings coaxially arranged above and below, and its inner cavity includes a number of equally spaced arc blades. The side wall of the impeller is open-shaped. The impeller 1 is a prior art component and is not described or limited here. It includes: a support unit 2, a drive unit 3, an elastic ring sleeve 4 and an abrasive supply unit 6. The impeller 1 is arranged in the inner cavity of the support unit 2, and the grinding of the impeller 1 is completed in the inner cavity of the support unit 2. Processing; the driving unit 3 is arranged above the supporting unit 2, and the supporting unit 2 provides support for the installation of the driving unit 3; the elastic ring sleeve 4 is controlled by the driving unit 3 to realize expansion, contraction and lifting movement. When the elastic ring sleeve 4 is controlled by the driving unit 3 to expand and move downward, the elastic ring sleeve 4 is expanded on the outside of the impeller 1, and the elastic ring sleeve 4 is movably sleeved on the side wall of the impeller 1. The elastic ring sleeve 4 is sleeved and wrapped around the side wall of the impeller 1 to realize pre-blocking of the opening of the side wall of the impeller 1, so that the abrasive fluid fills the entire inner cavity of the impeller 1 Reserve enough time; the abrasive supply unit 6 is arranged above the impeller 1, and the abrasive supply unit 6 is used to pass abrasive fluid into the inner cavity of the impeller 1 to achieve all-round grinding processing of the inner cavity of the impeller 1; specifically, the height of the elastic ring sleeve 4 is greater than the height of the opening of the side wall of the impeller 1, and the inner diameter of the elastic ring sleeve 4 in the free state is smaller than the outer diameter of the impeller 1, ensuring that the elastic ring sleeve 4 can tightly cover the side wall of the impeller 1 under the action of the expansion external force to form a reliable sealing structure; the elastic ring sleeve 4 adopts a common elastic annular sleeve on the market, which can expand under the action of external force and can return to its original state when the external force is lost, and in the above two states, the elastic ring sleeve 4 can ensure that the abrasive fluid will not penetrate the outer wall of the elastic ring sleeve 4 under its blocking action. In this embodiment, the elastic ring sleeve 4 is a ring sleeve made of rubber with elastic ability. Similarly, elastic ring sleeves 4 made of other elastic and flexible materials that can meet the use requirements can also be used as needed. It only needs to meet the use requirements. Its model and other properties are not repeated or limited here;

[0053] The present invention adopts a fluid abrasive medium to be injected into the inner cavity of the impeller 1. With the adaptive filling characteristics of the fluid, the abrasive can accurately cover the curved surface of the impeller blade and the entire wall of the inner cavity, realizing zero blind area grinding, and can completely abandon the secondary grinding process of the impeller 1, simplify the process chain, greatly reduce equipment investment and labor costs, and significantly improve the impeller grinding efficiency and quality uniformity; in addition, the present invention adopts a pre-sealing function. Before the abrasive fluid is injected into the impeller 1, the side wall of the impeller 1 is sealed by the elastic ring sleeve 4 to ensure that the abrasive fluid can completely fill the inner cavity of the impeller 1 after injection, and achieve full contact with the side walls of various parts of the blades, effectively overcoming the problem of uneven fluid scouring in open processing, eliminating grinding blind spots, and greatly improving the integrity of the impeller surface processing and the uniformity of the grinding effect.

[0054] Main references Figures 1 to 7As shown, the driving unit 3 includes a power component, and the power component includes: a first hydraulic cylinder 3001, a second mounting plate 3002, and a driving ring 3003. The first hydraulic cylinder 3001 is fixedly connected to the support unit 2, and the support unit 2 provides support for the vertical installation of the first hydraulic cylinder 3001. The second mounting plate 3002 is installed at the top output end of the first hydraulic cylinder 3001. The driving ring 3003 is installed on the side wall of the second mounting plate 3002. Through the lifting movement of the output end of the first hydraulic cylinder 3001, the second mounting plate 3002 and the driving ring 3003 can be driven to move up and down synchronously, and the driving ring 3003 is located directly above the support unit 2, thereby ensuring that the driving unit 3 can accurately move in the vertical direction relative to the support unit 2. The driving unit 3 further includes multiple groups of driving components. In this embodiment, six groups of driving components are provided, and the multiple groups of driving components are equidistantly arranged along the circumferential direction of the driving ring 3003. By driving the power component, the multiple groups of driving components apply the same force to the elastic ring sleeve 4, that is, through the lifting movement of the driving ring 3003, the six groups of driving components can be driven to act on the elastic ring sleeve 4 simultaneously. Each group of driving components includes: a first support arm 3004, a fixing plate 3005, a first chute 3006, a second chute 3007, a sliding rod 3008, a first U-shaped frame 3009, a connecting plate 3010, a connecting seat 3011, a first driving frame 3012, a second driving frame 3013, and a second U-shaped frame 3014. One end of the first support arm 3004 is fixedly connected to the support unit 2, and the support unit 2 provides support for the fixed connection of the first support arm 3004. The fixing plate 3005 is fixedly connected to the other end of the first support arm 3004, and the fixing plate 3005 is arranged in the vertical direction. The first chute 3006 and the second chute 3007 are penetrated and opened on the fixing plate 3005. The first chute 3006 and the second chute 3007 form a hook-shaped chute with a connected inner cavity. Specifically, the first chute 3006 is inclined downwardly opened on the fixing plate 3005, and the second chute 3007 is connected to the bottom end of the first chute 3006. The second chute 3007 is inclined upwardly opened on the fixing plate 3005. The sliding rod 3008 penetrates the inner cavity of the hook-shaped chute, that is, the sliding rod 3008 can move along the inner cavities of the first chute 3006 and the second chute 3007. The first U-shaped frame 3009 is U-shaped, and the sliding rod 3008 is installed at the U-shaped opening of the first U-shaped frame 3009. By moving the sliding rod 3008 along the inner cavities of the first chute 3006 and the second chute 3007, the first U-shaped frame 3009 can be driven to move along with the sliding rod 3008. The connecting plate 3010 is installed on the side wall of the first U-shaped frame 3009 on the side背离 the sliding rod 3008, and the connecting plate 3010 is arranged in a "匚" shape;The connecting seat 3011 is sleeved on the connecting plate 3010, and the connecting plate 3010 passes through the inner cavity of the connecting seat 3011. With the help of the special shape of the connecting plate 3010, it can be ensured that when the connecting plate 3010 pulls the connecting seat 3011 and the side wall of the elastic ring 4 outward, the connecting plate 3010 will not be separated from the inner cavity of the connecting seat 3011, that is, the stable connection between the connecting plate 3010 and the connecting seat 3011 is ensured, and the side wall of the connecting seat 3011 is fixedly connected to the outer wall of the elastic ring 4. Due to the first U-shaped The other end of the frame 3009 is connected to the elastic ring 4 through the connecting plate 3010 and the connecting seat 3011, and when the elastic ring 4 itself is stretched equidistantly in the circumferential direction, the elastic ring 4 generates a horizontal inward elastic force, which can ensure that the first U-shaped frame 3009, the connecting plate 3010, and the connecting seat 3011 move in the horizontal direction, that is, through the circumferential six groups of sliding rods 3008 moving outward, the elastic ring 4 is subjected to a circumferential uniform tension to expand, and under the guidance of the first slide groove 3006, the elastic ring 4 is elastically extended. The elastic ring sleeve 4 expands and moves downward to be sleeved on the outside of the impeller 1, preparing for the subsequent elastic ring sleeve 4 to wrap around the opening of the side wall of the impeller 1; the first driving frame 3012 and the second driving frame 3013 form a frame for the slide bar 3008 to move, and the frame is provided with two groups, and the two groups of frames are symmetrically sleeved on both ends of the slide bar 3008; the second U-shaped frame 3014 is fixedly and vertically installed on the top of the two groups of frames, and the top of the second U-shaped frame 3014 is fixedly connected to the lower surface of the driving ring 3003, through the driving ring 30 03 moves downward, which can drive the six groups of second U-shaped frames 3014 to move downward synchronously, thereby prompting the two groups of first drive frames 3012 and second drive frames 3013 at the bottom of each group of second U-shaped frames 3014 to move downward synchronously, so as to drive all the slide bars 3008 to move synchronously, thereby eliminating manual operation errors and the influence of asymmetric force, ensuring that the elastic ring sleeve 4 is coaxial and tightly fitted with the side wall of the impeller 1, greatly improving the pre-sealing sealing performance, and building a stable closed space for impeller abrasive flow processing; for details, mainly refer to; Figure 7 As shown, the transverse dimension of the inner cavity of the second driving frame 3013 is larger than the span dimension of the second chute 3007 in the horizontal projection direction. This ensures that when the second driving frame 3013 moves upward, it can drive the sliding rod 3008 to move smoothly along the inner cavity of the second chute 3007 to the inner cavity of the first chute 3006, thereby avoiding the defect that the transverse dimension of the inner cavity of the second driving frame 3013 is too small, which restricts the movement of the sliding rod 3008 in the second chute 3007 and the first chute 3006.

[0055] Specifically, the first hydraulic cylinder 3001 is activated to drive the second mounting plate 3002 and the drive ring 3003 downward, so that the second U-shaped frame 3014 drives the first drive frame 3012 downward synchronously, and the slide rod 3008 is pressed down along the first slide groove 3006 by the first drive frame 3012. The first U-shaped frame 3009, the connecting plate 3010, and the connecting seat 3011 exert an outward pulling force on the side wall of the elastic ring sleeve 4, so that the elastic ring sleeve 4 expands circumferentially while descending and is sleeved on the side wall of the impeller 1. When the slide rod 3008 enters the second slide groove 3007, the elastic force of the elastic ring sleeve 4 causes the relevant components to shrink toward the center, and the elastic ring sleeve 4 shrinks and fits the side wall of the impeller 1 to form a pre-blocking structure.

[0056] After the driving unit 3 drives the elastic ring sleeve 4 to complete the sealing of the side wall of the impeller 1, the output end of the first hydraulic cylinder 3001 moves downward to the limit, and the slide bar 3008 is pressed against the inner wall of the first driving frame 3012 under the pressure and is above the inner cavity of the second driving frame 3013; when resetting, the second mounting plate 3002 and other components move upward synchronously, and the second driving frame 3013 first moves upward relative to the slide bar 3008. After the contact, the slide bar 3008 is driven to move from the second slide groove 3007 to the first slide groove 3006, so that the elastic ring sleeve 4 first expands and separates from the side wall of the impeller 1 and then retracts and resets. This process realizes the delayed residence of the slide bar 3008, so as to prompt the elastic ring sleeve 4 to stay stably, providing time for the abrasive to fill the inner cavity of the impeller 1;

[0057] The present invention relies on the single reciprocating motion of the output end of the first hydraulic cylinder 3001 to construct an automated operation closed-loop system for the elastic ring sleeve 4 on the side wall of the impeller 1, which can realize the continuous action of the elastic ring sleeve 4 automatically expanding and sleeved in the downward stage, and synchronously contracting and resetting in the upward stage. This process does not require human intervention throughout, and relies on precise structural coordination and displacement control to ensure that the blocking and resetting processes have high execution efficiency, positioning accuracy and operational reliability.

[0058] Main references Figure 1 、 Figure 3 、 Figure 8 、 Figure 13 and Figure 14 As shown, the support unit 2 includes: an annular seat 2001, a first mounting plate 2002, an annular bottom plate 2003, a through groove 2004 and a support leg 2005. The annular seat 2001 is a hollow annular body; the first mounting plate 2002 is fixedly mounted on the top of the side wall of the annular seat 2001, and the first hydraulic cylinder 3001 is fixedly mounted on the first mounting plate 2002, and the first mounting plate 2002 provides support for the installation of the first hydraulic cylinder 3001; the annular bottom plate 2003 is fixedly mounted on the bottom end of the inner wall of the annular seat 2001, and the center of the annular bottom plate 2003 is set as a hollow inner cavity; the through groove 2004 is opened from top to bottom on the annular bottom plate 2003; the support leg 2005 is fixedly and vertically mounted on the bottom end of the annular seat 2001;

[0059] The support unit 2 of the present invention has composite functional characteristics. At the mechanical structure level, it serves as a stable installation platform, providing reliable support for the various functional components of the system, ensuring the overall structural strength and assembly accuracy. At the fluid management level, through the structural design of the through groove 2004 and other structures, a dedicated abrasive fluid discharge channel is constructed to achieve directional transmission and orderly collection of the abrasive after processing, ensuring the efficient operation of the abrasive circulation process.

[0060] Main references Figure 2 、 Figure 3 、 Figure 8 、 Figure 9 As shown, the present invention also includes a supporting component 5, which includes: a second hydraulic cylinder 5001, a supporting plate 5002 and a supporting seat 5003. The second hydraulic cylinder 5001 is fixedly mounted on the lower surface of the first mounting plate 2002; the supporting plate 5002 is fixedly mounted on the bottom output end of the second hydraulic cylinder 5001; the supporting seat 5003 is fixedly mounted on the side wall of the supporting plate 5002, and the supporting seat 5003 is plugged into the hollow inner cavity of the annular bottom plate 2003 in the vertical direction, and the impeller 1 is placed in the inner cavity of the supporting seat 5003. A rubber sealing ring is installed at the edge of the bottom end of the side wall of the supporting seat 5003. After the supporting seat 5003 is inserted upward and embedded in the inner cavity of the annular bottom plate 2003, the impeller 1 is placed in the inner cavity of the supporting seat 5003. The sealing ring can realize the formation of a sealed space between the supporting seat 5003 and the annular bottom film 2003, thereby preventing the abrasive fluid from leaking from the connection between the supporting seat 5003 and the annular bottom film 2003; the vertical height of the supporting seat 5003 exceeds the height of the blades in the inner cavity of the impeller 1. When the elastic ring sleeve 4 releases the blockage of the side wall of the impeller 1 and resets, the abrasive fluid in the inner cavity of the impeller 1 flows into the supporting seat 5003 through the side wall opening. Since the height of the supporting seat 5003 is greater than the blades in the inner cavity of the impeller 1, a temporary buffer zone is formed. After the grinding is completed, the abrasive fluid first fills the supporting seat 5003, and when the liquid level rises to the top edge, it overflows to the annular bottom film 2003 and then enters the recycling process through the through groove 2004, thereby realizing orderly recycling and processing;

[0061] Place the impeller 1 in the relatively central area inside the support seat 5003. After starting the second hydraulic cylinder 5001, its output end drives the support plate 5002, the support seat 5003 and the impeller 1 in its inner cavity to move upward synchronously. During this process, the support seat 5003 moves upward along the hollow channel of the annular base 2003. When the bottom edge of the support seat 5003 and the bottom edge of the annular seat 2001 are at the same horizontal position, the impeller 1 accurately reaches the predetermined grinding operation station.

[0062] Main references Figure 1 、 Figure 3 、 Figure 10As shown, the abrasive supply unit 6 includes: a second support arm 6001, a connecting arm 6002, a feeding cylinder 6003, a connecting piece 6004, a third hydraulic cylinder 6005, a circular pressing piece 6006 and a discharging cylinder 6007. A plurality of second support arms 6001 are equidistantly arranged along the circumference of the support unit 2. In this embodiment, three second support arms 6001 are provided, and one end of each second support arm 6001 is fixedly mounted on the support unit 2. The second support arms 6001 are fixedly mounted on the annular seat 200. 1, the annular seat 2001 provides support for the installation of the three second support arms 6001; one end of the connecting arm 6002 is fixedly installed on the side wall of the second support arm 6001; the feeding cylinder 6003 is fixedly installed on the other end of the connecting arm 6002, and the feeding cylinder 6003 is arranged in the vertical direction, and the feeding cylinder 6003 and the second support arm 6001 are stably connected through the connecting arm 6002; the connecting piece 6004 is fixedly installed on the other end of the second support arm 6001, and the connecting piece 600 4 is coaxially arranged with the feeding cylinder 6003; the third hydraulic cylinder 6005 is fixedly installed on the top of the connecting piece 6004; the circular pressing piece 6006 is fixedly installed on the bottom output end of the third hydraulic cylinder 6005, and the circular pressing piece 6006 is movable along the inner wall of the feeding cylinder 6003; the discharging cylinder 6007 is arranged at the bottom end of the feeding cylinder 6003, and the discharging cylinder 6007 is coaxially arranged with the feeding cylinder 6003; specifically, an electromagnetic valve that can be opened or closed as needed is provided between the feeding cylinder 6003 and the discharging cylinder 6007. Valve, the solenoid valve can also be controlled and adjusted by an external controller. By switching the solenoid valve, it can control whether the feeding cylinder 6003 and the discharging cylinder 6007 are in a connected state, and provide convenience for controlling whether the abrasive in the inner cavity of the feeding cylinder 6003 enters the inner cavity of the discharging cylinder 6007 for subsequent grinding. This is a prior art and will not be described in detail here. The above-mentioned components all adopt common models on the market, which can meet the corresponding use requirements in this application. The above-mentioned existing components are not limited to the models and will not be described in detail here.

[0063] When the solenoid valve between the feed barrel 6003 and the discharge barrel 6007 is opened, the third hydraulic cylinder 6005 starts to drive the circular pressing plate 6006 downward along the inner cavity of the feed barrel 6003. By applying auxiliary pressure, the abrasive fluid in the feed barrel 6003 is pushed to accelerate the flow toward the discharge barrel 6007 and the inner cavity of the impeller 1. The abrasive fluid is injected through the top center of the impeller 1, and under the obstruction of the elastic ring sleeve 4 of the sealing member, it gradually and evenly fills the curved blade side wall and the entire inner wall surface of the inner cavity of the impeller 1, ensuring sufficient coverage and efficient grinding.

[0064] The abrasive supply unit 6 has an efficient feeding capacity and can stably deliver sufficient abrasive fluid to the inner cavity of the impeller 1, ensuring that the abrasive evenly covers the complex surface and fine structure of the inner cavity of the impeller 1, laying a solid material guarantee foundation for high-precision and full-coverage grinding operations on the entire surface of the impeller.

[0065] Main references Figures 10 to 12 As shown, a positioning unit 7 is provided at the abrasive supply unit 6, and the positioning unit 7 includes: a third mounting plate 7001, a fourth hydraulic cylinder 7002, a sleeve 7003 and a tapered cylinder 7004, the third mounting plate 7001 is fixedly mounted on the side wall of the discharge cylinder 6007; the fourth hydraulic cylinder 7002 is fixedly and vertically mounted on the lower surface of the third mounting plate 7001; the sleeve 7003 is slidably sleeved on the discharge cylinder 6007, and the bottom output end of the fourth hydraulic cylinder 7002 is fixedly connected to the outer side wall of the sleeve 7003; the tapered cylinder 7004 is fixedly mounted on the bottom end of the sleeve 7003, and the tapered cylinder 7004 is funnel-shaped with a narrow upper part and a wide lower part, and the impeller 1, the tapered cylinder 7004, the sleeve 7003 and the discharge cylinder 6007 are coaxially arranged;

[0066] After starting the fourth hydraulic cylinder 7002, the driving sleeve 7003 and the conical cylinder 7004 move downward synchronously. The conical cylinder 7004 has a funnel-shaped structure that is narrow at the top and wide at the bottom. According to the conical surface matching mechanism, it fits tightly with the top edge of the impeller 1 during the descending process to form an adaptive seal. This not only ensures that the abrasive fluid can be accurately injected into the inner cavity of the impeller 1 under different caliber specifications, but also utilizes the guiding effect of the inner wall of the conical surface of the conical cylinder 7004 to achieve automatic coaxial positioning of the impeller 1 and the bottom end of the discharge cylinder 6007, providing reliable guarantee for the precise delivery and efficient grinding of the abrasive fluid.

[0067] Main references Figure 1 、 Figure 13 and Figure 15 As shown, an abrasive recovery unit 8 is provided at the bottom end of the support unit 2. The abrasive recovery unit 8 includes: a collecting funnel 8001, a guide pipe 8002 and a solenoid valve 8003. The collecting funnel 8001 is installed on the lower surface of the annular bottom plate 2003, and the position of the collecting funnel 8001 corresponds to the position of the through groove 2004; the guide pipe 8002 is connected to the inner cavity of the collecting funnel 8001, and the guide pipe 8002 is configured in a Y shape; the solenoid valve 8003 is provided at the bottom end of the guide pipe 8002. The solenoid valve 8003 adopts a commonly used solenoid valve on the market, which is controlled to open or close to achieve centralized discharge processing of the collected abrasive;

[0068] The abrasive fluid discharged through the through groove 2004 enters the inner cavity of the collecting funnel 8001, and enters the centralized collection link in an orderly manner under the guidance of the guide pipe 8002. By controlling the opening and closing state of the solenoid valve 8003, the discharge process of the abrasive fluid in the guide pipe 8002 can be flexibly adjusted, thereby achieving efficient convergence and controllable temporary storage of the abrasive fluid after use, providing buffering and allocation space for subsequent processing steps.

[0069] In summary, the present invention integrates core processes such as centering and clamping of the impeller 1, abrasive fluid processing of the entire inner cavity surface, and abrasive fluid supply and recovery processing to form a coherent automated operation chain. By precisely designing the coordination mechanism between various functional units, seamless connection between processes is achieved, which greatly improves processing efficiency, effectively reduces the time spent on manual operation and process flow, and realizes efficient and integrated impeller grinding production.

[0070] In addition, the abrasive fluid used to polish the inner cavity of the impeller is mainly composed of three parts: abrasive particles, carrier fluid, and additives. Abrasive particles are the main component of the abrasive fluid, and materials with high hardness and good wear resistance are usually selected, such as silicon carbide, aluminum oxide, diamond, etc.; the carrier fluid carries the abrasive particles and disperses them evenly, and at the same time plays a role in cooling and lubricating during the polishing process. Commonly used carrier fluids include oils, water-based fluids, etc.; additives are added to improve the performance of the abrasive fluid, and some auxiliary components are added. For example, adding a dispersant can make the abrasive particles more evenly dispersed in the carrier fluid, prevent particles from agglomerating, and ensure the stability and consistency of the abrasive fluid; adding a corrosion inhibitor can protect the impeller during the polishing process and prevent the impeller from being corroded; in addition, some surfactants may be added to reduce the surface tension of the abrasive fluid so that it can better wet the impeller surface and improve the polishing effect. The above-mentioned abrasive fluid is a prior art, which can meet the polishing requirements of the impeller cavity and will not be elaborated or limited here.

[0071] It is worth noting that, in the present application, the first hydraulic cylinder 3001, the second hydraulic cylinder 5001, the third hydraulic cylinder 6005, and the fourth hydraulic cylinder 7002 are self-locking cylinders commonly used on the market, and their output ends can stay at any position and be locked, and the output ends of the above components can all realize the reciprocating movement function. They are prior art and adopt common models on the market, and are not described or limited here. In addition, the present application is provided with an external controller, which adopts a common model on the market, and refers to a main command device that changes the wiring of the main circuit or control circuit and changes the resistance value in the circuit in a predetermined order to control the start, speed regulation, braking and reverse of the motor, and can control the first hydraulic cylinder 3001, the second hydraulic cylinder 5001, the third hydraulic cylinder 6005, and the fourth hydraulic cylinder in the present application. 7002, solenoid valve 8003 and other components perform the corresponding instructions. In addition, the timing of the coordinated action of various parts in this solution can be controlled by an external controller. Specifically, the external controller can control the supporting component 5 to lift the impeller 1 into the supporting unit 2, the positioning unit 7 to center and align the impeller 1, the elastic ring sleeve 4 is first sleeved on the side wall of the impeller 1 to form a pre-sealing structure, the elastic ring sleeve 4 is delayed on the side wall of the impeller 1, the abrasive supply unit 6 injects abrasive fluid into the impeller 1 for grinding, and the elastic ring sleeve 4 is separated from the side wall of the impeller 1 and resets upward, forming a set of coherent and smooth impeller 1 automatic grinding process. The external controller is used to control the action and connection timing of the above components. It is an existing general technology and will not be elaborated or limited here.

[0072] The working principle of a water pump impeller grinding device in this embodiment is as follows:

[0073] First, the impeller 1 to be polished is placed in the polishing station: the impeller 1 is initially placed in the relative center position of the support seat 5003, and then the output end of the opened second hydraulic cylinder 5001 is used to drive the support plate 5002, the support seat 5003 and the impeller 1 in the inner cavity of the support seat 5003 to move upward, so that the support seat 5003 moves upward along the hollow cavity of the annular bottom plate 2003 until the bottom edge of the support seat 5003 moves upward to be flush with the bottom edge of the annular seat 2001. At this time, the impeller 1 reaches the polishing station;

[0074] Then, the positioning unit 7 is used to center and align the impeller 1 with the bottom end of the discharge barrel 6007: the sleeve 7003 and the tapered barrel 7004 are driven downward by the opened fourth hydraulic cylinder 7002. Since the tapered barrel 7004 is in the shape of a funnel with a narrow top and a wide bottom, the tapered barrel 7004 moving downward is tightly against the peripheral edge of the top of the impeller 1 to form a self-sealing contact by utilizing the principle of conical surface matching, ensuring that the abrasive fluid can be accurately injected into the inner cavity of the impeller 1 in different caliber adaptation scenarios, and the conical inner wall of the tapered barrel 7004 will guide the impeller 1 to automatically center and align inside it, that is, the coaxial assembly of impellers 1 of different specifications and sizes with the bottom end of the discharge barrel 6007 is realized, ensuring that the subsequent abrasive fluid accurately enters the impeller 1 to play a grinding role;

[0075] The side wall of the impeller 1 is pre-sealed by the elastic ring 4: the second mounting plate 3002 and the driving ring 3003 are driven downward by the opened first hydraulic cylinder 3001, so as to prompt each group of second U-shaped frames 3014 to drive the first driving frames 3012 at the corresponding positions to move downward synchronously. At this time, the slide bars 3008 at each position are acted upon by the pressure of the first driving frames 3012, and move downward along the first sliding grooves 3006 at the corresponding positions, so as to prompt the first U-shaped frames 3009, the connecting plates 3010 and the connecting seats 3011 to apply an outward pulling force to the side wall of the elastic ring 4, so as to prompt The elastic ring sleeve 4 is forced to expand in the circumferential direction, so that the elastic ring sleeve 4 moves downward and expands at the side wall of the impeller 1; as the slide bar 3008 enters the second slide groove 3007 along the first slide groove 3006, the elastic force of the elastic ring sleeve 4 causes the connecting seat 3011, the connecting plate 3010, the first U-shaped frame 3009, and the slide bar 3008 to shrink toward the center direction of the elastic ring sleeve 4, that is, the elastic ring sleeve 4 shrinks and fits the side wall of the impeller 1, thereby the elastic ring sleeve 4 is tightly wrapped around the side wall of the impeller 1 under the action of its own elastic force, forming a pre-blocking structure at the side wall of the impeller 1;

[0076] When the solenoid valve provided between the feed cylinder 6003 and the discharge cylinder 6007 is opened, the circular pressing piece 6006 is driven by the opened third hydraulic cylinder 6005 to move downward along the inner cavity of the feed cylinder 6003, thereby assisting in applying pressure to the abrasive fluid in the inner cavity of the feed cylinder 6003, causing the abrasive fluid to move more tightly and fully downward to the discharge cylinder 6007 and the inner cavity of the impeller 1. The abrasive fluid enters the inner cavity of the impeller 1 from the top center thereof. Under the blocking effect of the closed elastic ring 4, the abrasive fluid gradually fills the arcuate side walls and other inner walls of the blades in the inner cavity of the impeller 1.

[0077] After the driving unit 3 drives the elastic ring 4 to complete the sealing operation on the side wall of the impeller 1, the output end of the first hydraulic cylinder 3001 moves downward to the limit position. At this time, the slide bar 3008 is pressed against the inner wall of the first drive frame 3012 under the pressure of the first drive frame 3012, and corresponds to the upper position of the inner cavity of the second drive frame 3013; as the output end of the first hydraulic cylinder 3001 starts the reset stroke, the second mounting plate 3002, the drive ring 3003, the second U-shaped frame 3014, the first drive frame 3012 and the second drive frame 3013 move upward synchronously, wherein the second drive frame 3013 is preferentially relative to the slide bar 3008. The second drive frame 3013 moves upward relative to each other until the bottom end of the inner wall of the second drive frame 3013 contacts the slide bar 3008, and the two form a linkage ascending mechanism, that is, the second drive frame 3013 drives the slide bar 3008 to gradually move along the second slide groove 3007 to the inner cavity of the first slide groove 3006, so that the elastic ring 4 first expands outward to separate from the side wall of the impeller 1, and then retracts upward to reset; thereby achieving the controllable delayed residence of the slide bar 3008 at the bottom of the inner cavity of the second slide groove 3007, thereby ensuring that the elastic ring 4 remains stable after covering the side wall of the impeller 1, creating ample time for the abrasive fluid to fully fill the inner cavity of the impeller 1;

[0078] When the elastic ring sleeve 4 is retracted upward and reset to its initial position and no longer blocks the side wall of the impeller 1, the abrasive fluid in the inner cavity of the impeller 1 enters the inner cavity of the support seat 5003 through the opening in the side wall of the impeller 1; because the vertical height of the support seat 5003 exceeds the height of the blades in the inner cavity of the impeller 1, a temporary buffer cavity for the abrasive fluid is constructed. After the grinding operation of the inner cavity of the impeller 1 is completed, the abrasive fluid first fills the cavity of the support seat 5003. When it reaches the top edge of the support seat 5003, the abrasive fluid overflows to the annular bottom plate 2003 and enters the recycling process through the through groove 2004;

[0079] The abrasive fluid flowing down through the through slot 2004 enters the inner cavity of the collecting funnel 8001 and enters the subsequent centralized collection process under the guidance of the guide pipe 8002 for processing. The opening or closing of the solenoid valve 8003 can control whether the abrasive fluid in the inner cavity of the guide pipe 8002 is discharged, thereby achieving efficient collection and temporary storage of the used abrasive fluid.

[0080] The present invention realizes high efficiency and precision in the whole process of impeller grinding: the adaptive filling characteristics of the abrasive medium fluid are utilized to eliminate the blind spots of traditional grinding, streamline the process flow, reduce equipment and labor costs, and improve grinding efficiency and quality consistency; the pre-sealing design and delayed residence mechanism ensure that the abrasive fluid fully covers all parts of the impeller cavity to ensure the grinding effect; the automated sealing component and multiple sets of synchronous drive settings achieve precise sealing, avoid manual operation deviation, and provide a stable closed environment for grinding; the adaptive caliber adjustment and positioning system is compatible with a variety of impeller models to ensure precise injection of abrasives; the supporting positioning components cooperate with the guide structure to prevent the abrasives from being emptied prematurely and ensure full-area grinding; in addition, the integrated design of the mechanical bearing and fluid guide of the support unit 2 provides stable support for the system and realizes orderly discharge of the abrasive; the recovery device realizes closed-loop management and resource utilization of the abrasive; the various functional units are seamlessly connected to form an integrated operation process, which significantly improves the efficiency and quality of the impeller grinding process.

[0081] Example 2

[0082] Main references Figures 16 to 18 FIG. 1 is a schematic structural diagram of the grinding process for a large-diameter impeller 1 .

[0083] With reference to Example 1, the positioning unit 7 realizes the centering of the impellers 1 of different diameters at the supporting assembly 5 . Similarly, the positioning requirement for the large-diameter impeller 1 in this embodiment can be realized.

[0084] Specifically, adaptive caliber adjustment and precise positioning functions are realized through the sleeve 7003 and the tapered cylinder 7004. This structure can flexibly adapt to impellers 1 of different specifications, ensuring their coaxial assembly with the bottom end of the discharge cylinder 6007, and effectively meeting the grinding requirements of various impeller models; the tapered cylinder 7004 adopts a funnel-shaped structure that is narrow at the top and wide at the bottom. Based on the principle of conical surface matching, the top periphery of the impeller 1 and the inner wall of the tapered cylinder 7004 form a dynamic self-seal, ensuring that under different caliber working conditions, the abrasive fluid can be accurately injected into the inner cavity of the impeller 1, providing reliable sealing performance and stable fluid transmission effect for the impeller inner cavity grinding operation.

[0085] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0086] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0087] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0088] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0089] Unless otherwise stated, the term "plurality" means two or more.

[0090] In the embodiments of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0091] The term "and / or" describes an association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0092] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A water pump impeller grinding device for grinding the inner wall of an impeller (1), characterized in that: include: A support unit (2), wherein the impeller (1) is arranged in an inner cavity of the support unit (2); A driving unit (3), the driving unit (3) being arranged above the supporting unit (2); An elastic ring sleeve (4), the elastic ring sleeve (4) is controlled by the driving unit (3) to achieve expansion, contraction, and lifting and lowering movement, and the elastic ring sleeve (4) is movably sleeved on the side wall of the impeller (1); an abrasive supply unit (6), the abrasive supply unit (6) being arranged above the impeller (1), and the abrasive supply unit (6) being used to introduce abrasive fluid into the inner cavity of the impeller (1); The support unit (2) comprises: An annular seat (2001), wherein the annular seat (2001) is a hollow annular body; a first mounting plate (2002), the first mounting plate (2002) being fixedly mounted on the top end of the side wall of the annular seat (2001); An annular bottom film (2003), the annular bottom film (2003) is fixedly mounted on the bottom end of the inner wall of the annular seat (2001), and the center of the annular bottom film (2003) is set as a hollow inner cavity; A through groove (2004), the through groove (2004) is opened on the annular bottom plate (2003) from top to bottom; A support foot (2005), the support foot (2005) is fixedly and vertically mounted on the bottom end of the annular seat (2001); It also includes a supporting component (5), which includes: a second hydraulic cylinder (5001), the second hydraulic cylinder (5001) being fixedly mounted on the lower surface of the first mounting plate (2002); A supporting plate (5002), the supporting plate (5002) being fixedly mounted on the bottom output end of the second hydraulic cylinder (5001); A support seat (5003), the support seat (5003) is fixedly mounted on the side wall of the support plate (5002), the support seat (5003) is plugged into the hollow inner cavity of the annular bottom plate (2003) in a vertical direction, and the impeller (1) is placed in the inner cavity of the support seat (5003), and the vertical height of the support seat (5003) exceeds the height of the blades in the inner cavity of the impeller (1).

2. A water pump impeller grinding device according to claim 1, characterized in that: The driving unit (3) comprises a power assembly, and the power assembly comprises: a first hydraulic cylinder (3001), the first hydraulic cylinder (3001) being fixedly connected to the support unit (2); A second mounting plate (3002), the second mounting plate (3002) being mounted on the top output end of the first hydraulic cylinder (3001); A drive ring (3003), the drive ring (3003) is mounted on a side wall of the second mounting plate (3002), and the drive ring (3003) is located directly above the support unit (2).

3. A water pump impeller grinding device according to claim 2, characterized in that: The driving unit (3) further includes multiple groups of driving components, which are equidistantly arranged circumferentially along the driving ring (3003). The power component is used to drive the multiple groups of driving components to apply the same acting force to the elastic ring sleeve (4). Each group of driving components includes: A first support arm (3004), one end of the first support arm (3004) is fixedly connected to the support unit (2); A fixing plate (3005), the fixing plate (3005) is fixedly connected to the other end of the first support arm (3004), and the fixing plate (3005) is arranged in the vertical direction; A first sliding groove (3006) and a second sliding groove (3007), the first sliding groove (3006) and the second sliding groove (3007) are贯穿开设 (penetratingly opened) on the fixing plate (3005), and the first sliding groove (3006) and the second sliding groove (3007) form a hooked sliding groove with an internally connected cavity; A sliding rod (3008), the sliding rod (3008) penetrates through the inner cavity of the hooked sliding groove; A first U-shaped frame (3009), the first U-shaped frame (3009) is set in a U shape, and the sliding rod (3008) is installed at the U-shaped opening of the first U-shaped frame (3009); A connecting plate (3010), the connecting plate (3010) is installed on the side wall of the first U-shaped frame (3009)背离所述滑杆 (away from the sliding rod (3008)), and the connecting plate (3010) is set in an "L" shape; A connecting seat (3011), the connecting seat (3011) is sleeved on the connecting plate (3010), and the side wall of the connecting seat (3011) is fixedly connected to the outer side wall of the elastic ring sleeve (4); A first driving frame (3012) and a second driving frame (3013), the first driving frame (3012) and the second driving frame (3013) form a frame for the sliding rod (3008) to move. There are two groups of the frames, and the two groups of frames are symmetrically sleeved at both ends of the sliding rod (3008); A second U-shaped frame (3014), the second U-shaped frame (3014) is fixedly and perpendicularly installed at the top of the two groups of frames, and the top of the second U-shaped frame (3014) is fixedly connected to the lower surface of the driving ring (3003).

4. According to the water pump impeller grinding device described in claim 3, it is characterized in that: The transverse dimension of the inner cavity of the second driving frame (X) is greater than the span dimension of the second sliding groove (3007) in the horizontal projection direction.

5. According to the water pump impeller grinding device described in claim 1, it is characterized in that: The abrasive supply unit (6) includes: A second support arm (6001), multiple second support arms (6001) are equidistantly arranged circumferentially along the support unit (2), and one end of each second support arm (6001) is fixedly installed on the support unit (2); A connecting arm (6002), one end of the connecting arm (6002) is fixedly installed on the side wall of the second support arm (6001); It should be noted that the Chinese term "贯穿开设" is translated as "penetratingly opened" here. You may need to adjust it according to the actual context and more accurate technical terms. Also, the "匚”形 in Chinese is translated as "L" shape here, which might need to be confirmed according to the actual shape description in the original text. A feeding cylinder (6003), the feeding cylinder (6003) is fixedly mounted on the other end of the connecting arm (6002), and the feeding cylinder (6003) is arranged in a vertical direction; A connecting piece (6004), the connecting piece (6004) is fixedly mounted on the other end of the second support arm (6001), and the connecting piece (6004) is coaxially arranged with the feeding barrel (6003); A third hydraulic cylinder (6005), the third hydraulic cylinder (6005) is fixedly mounted on the top of the connecting piece (6004); A circular pressing piece (6006), the circular pressing piece (6006) is fixedly mounted on the bottom output end of the third hydraulic cylinder (6005), and the circular pressing piece (6006) is movably arranged along the inner wall of the feeding barrel (6003); The discharge cylinder (6007) is arranged at the bottom end of the feeding cylinder (6003), and the discharge cylinder (6007) and the feeding cylinder (6003) are coaxially arranged.

6. A water pump impeller grinding device according to claim 5, characterized in that: The abrasive supply unit (6) is provided with a positioning unit (7), and the positioning unit (7) comprises: a third mounting piece (7001), the third mounting piece (7001) being fixedly mounted on a side wall of the discharge barrel (6007); a fourth hydraulic cylinder (7002), the fourth hydraulic cylinder (7002) being fixedly and vertically mounted on the lower surface of the third mounting plate (7001); A sleeve (7003), wherein the sleeve (7003) is slidably mounted on the discharge barrel (6007), and the bottom output end of the fourth hydraulic cylinder (7002) is fixedly connected to the outer side wall of the sleeve (7003); A conical cylinder (7004) is fixedly mounted on the bottom end of the sleeve (7003), the conical cylinder (7004) is funnel-shaped with a narrow top and a wide bottom, and the impeller (1), the conical cylinder (7004), the sleeve (7003), and the discharge cylinder (6007) are coaxially arranged.

7. The water pump impeller grinding device according to claim 1, characterized in that: An abrasive recovery unit (8) is provided at the bottom end of the support unit (2), and the abrasive recovery unit (8) comprises: A collecting funnel (8001), the collecting funnel (8001) being mounted on the lower surface of the annular bottom plate (2003), and the position of the collecting funnel (8001) corresponds to that of the through groove (2004); A flow guide tube (8002), the flow guide tube (8002) is connected to the inner cavity of the collecting funnel (8001), and the flow guide tube (8002) is configured to be Y-shaped; A solenoid valve (8003), the solenoid valve (8003) is arranged at the bottom end of the guide tube (8002).

8. The water pump impeller grinding device according to claim 1, characterized in that: The height of the elastic ring sleeve (4) is greater than the height of the opening of the side wall of the impeller (1), and the inner diameter of the elastic ring sleeve (4) in a free state is smaller than the outer diameter of the impeller (1).

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