Pump impeller machining precision inspection tool

Abstract

The utility model discloses a pump wheel machining precision inspection tool which comprises a first inspection tool body, the first inspection tool body comprises a first inspection part, the peripheral contour of the first inspection part is consistent with the contour of the inner wall of an annular groove forming a pump wheel cavity, and the first inspection part is configured to be capable of being inserted into any pump wheel cavity. One side wall of the first inspection part is attached to the side wall of one blade forming the pump wheel cavity, and a first containing space is formed among the other side wall of the first inspection part, the side wall of the other blade forming the pump wheel cavity and the inner wall of the annular groove forming the pump wheel cavity; the first accommodating space is configured to allow light to enter. The accuracy of pump impeller machining precision inspection is improved, and the pump impeller machining precision inspection device is simple in structure, convenient to use and low in manufacturing cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic coupler equipment manufacturing technical field especially relates to a pump wheel machining precision inspection frock. BACKGROUND

[0002] The main function of the speed-regulating hydraulic coupler equipment is to convert the mechanical energy of the driving machine into the kinetic energy of the working liquid in the pump wheel, when the working liquid with kinetic energy is rushed to the relatively arranged turbine from the pump wheel outlet, the liquid flow impacts the turbine blade, and the turbine rotates in the same direction with the pump wheel, that is, the turbine absorbs the kinetic energy of the working liquid and converts it into mechanical energy again. In the energy transmission process, the cavity type of the pump wheel and the turbine determines the size of the torque transmission capacity of the equipment, so the machining precision of the pump wheel cavity type is crucial to the performance of the hydraulic coupler.

[0003] In the production and manufacturing process of the pump wheel, in order to check whether the cavity type of the processed pump wheel cavity meets the standard, visual inspection is usually carried out by using an inspection frock that can be inserted into the cavity and completely match it, if the inspection frock can completely match the pump wheel cavity to be inspected, it proves that the processed pump wheel cavity meets the machining precision requirement, if the inspection frock cannot completely match the pump wheel cavity to be inspected, it proves that the processed pump wheel cavity does not meet the machining precision requirement and needs to be corrected.

[0004] However, the pump wheel of the hydraulic coupler has high blade arrangement density and small internal space of the pump wheel cavity, which is not conducive to visual inspection, and in addition, the inner wall of the annular groove constituting the pump wheel cavity is irregularly arc-shaped, when the machining precision of the bottom of the annular groove inner wall does not meet the standard, the inspection frock will be inserted and its end will close the cavity opening of the pump wheel cavity, which causes the inspection personnel to be unable to accurately determine whether the bottom of the inspection frock completely matches the bottom of the pump wheel cavity to be inspected, and unable to accurately determine whether the machining precision of the pump wheel meets the standard. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the application provides a pump wheel machining precision inspection frock, which solves the technical problem that the existing inspection frock cannot accurately determine whether the machining precision of the pump wheel meets the standard. The application improves the accuracy of pump wheel machining precision inspection, and has simple structure, convenient use and low manufacturing cost.

[0006] The application provides a pump wheel machining precision inspection tool, which comprises a first inspection tool, wherein the first inspection tool comprises a first inspection part, the outer peripheral contour of the first inspection part is consistent with the inner wall contour of an annular groove constituting a pump wheel cavity, the first inspection part is configured to be inserted into any one of the pump wheel cavities, so that one side wall of the first inspection part is in close contact with the side wall of one blade constituting the pump wheel cavity, and another side wall of the first inspection part and the inner wall of the annular groove constituting the pump wheel cavity form a first containing space, and the first containing space is configured to allow light to enter.

[0007] In some embodiments, the first inspection part comprises oppositely arranged first side wall surface A and first side wall surface B, and a first end surface connecting the first side wall surface A and the first side wall surface B from the outer periphery, wherein the first side wall surface A is arranged to be completely in contact with the side wall of one blade constituting the pump wheel cavity, or the first side wall surface B is arranged to be completely in contact with the side wall of another blade constituting the pump wheel cavity.

[0008] The contour line of the first end surface is consistent with the inner wall contour line of the annular groove constituting the pump wheel cavity, and the first end surface is arranged to be in close contact with at least part of the inner wall surface of the annular groove.

[0009] In some embodiments, the first inspection tool further comprises a first marker, which is uniformly coated on the first end surface and at least one of the first side wall surface A and the first side wall surface B in a powder or glue form.

[0010] The first marker is configured to be transferred and adhered to the corresponding position of the inner wall of the annular groove or the side wall of the blade when the first marker is in contact with the inner wall of the annular groove or the side wall of the blade.

[0011] In some embodiments, the first inspection tool further comprises a first positioning part, which is fixedly connected to the first inspection part, and the first positioning part at least partially extends outward from both ends of the first inspection part.

[0012] The first positioning part is configured to limit the correct insertion of the first inspection part into the pump wheel cavity, so that the first end surface is in close contact with at least part of the inner wall surface of the annular groove, and one of the first side wall surface A and the first side wall surface B is completely in contact with the side wall of the same side blade constituting the pump wheel cavity.

[0013] In some embodiments, the inspection tool further comprises a second inspection tool, the second inspection tool comprising two oppositely arranged second inspection portions and a second positioning portion connecting the two second inspection portions at one end, a second accommodating space being formed between the two second inspection portions and the second positioning portion, the second accommodating space being configured to receive and conform to any blade forming the pump wheel cavity.

[0014] In some embodiments, the second inspection portion comprises a second side wall surface A and a second side wall surface B arranged oppositely, and a second end surface connecting the second side wall surface A and the second side wall surface B at the outer periphery, wherein the two second side wall surfaces B of the two second inspection portions correspond to each other, and the second accommodating space is formed between the two second side wall surfaces B and the bottom surface of the second positioning portion.

[0015] The profile line of the second end surface is consistent with the inner wall profile line of the annular groove forming the pump wheel cavity, and the second end surface is configured to conform to at least part of the inner wall surface of the annular groove.

[0016] In some embodiments, the second inspection tool further comprises a second marker, the second marker being uniformly coated in powder or glue on the two second side wall surfaces B of the two second inspection portions; or, the second marker being uniformly coated in powder or glue on the inner wall surface of the second accommodating space.

[0017] The second marker is configured to be transferred and adhered to the corresponding position of the side wall or top surface of the blade forming the pump wheel cavity when the second marker contacts the side wall or top surface of the blade.

[0018] In some embodiments, the distance between the two second side wall surfaces B of the two second inspection portions remains consistent from the end close to the second positioning portion to the end away from the second positioning portion, or gradually increases from the end close to the second positioning portion to the end away from the second positioning portion.

[0019] In some embodiments, the second inspection portion is configured to be inserted into and conform to the first accommodating space.

[0020] In some embodiments, the inspection tool further comprises a light source, the light source being configured to emit light.

[0021] The pump wheel machining precision inspection tool provided by the application, after the first inspection part of the first inspection tool is inserted into the pump wheel cavity of the pump wheel to be inspected, a first containing space is formed between the first inspection part and the inner wall of the pump wheel cavity, and the existence of the first containing space makes the first inspection part not completely close the cavity opening of the pump wheel cavity of the pump wheel to be inspected, and light can be emitted from the outside of the first inspection part via the first containing space. If the cavity type of the pump wheel cavity to be inspected meets the standard, there is no gap between the part where the first inspection part is attached to the inner wall of the pump wheel cavity, and light will not leak out from the other side of the first inspection part; if the cavity type of the pump wheel cavity to be inspected does not meet the standard, there will be gaps between the part where the first inspection part is attached to the inner wall of the pump wheel cavity, and light will leak out from these gaps to the other side of the first inspection part, so that the detection personnel can accurately determine whether the cavity type of the pump wheel cavity to be inspected meets the standard by observing whether light leaks from the other side of the first inspection part, thereby determining whether the machining precision of the pump wheel meets the requirements, improving the accuracy of the pump wheel machining precision inspection, and the inspection result is clear at a glance and is not limited by the narrow space of the cavity and the environment.

[0022] In addition, the pump wheel machining precision inspection tool provided by the application has the advantages of simple structure, small size, convenient carrying, low manufacturing cost and convenient use, and is conducive to improving the efficiency of pump wheel production. BRIEF DESCRIPTION OF DRAWINGS

[0023] The technical solutions of the application will be further described below with reference to the drawings and embodiments. In the drawings:

[0024] Figure 1 is a schematic diagram of the vertical structure of a pump wheel;

[0025] Figure 2 is Figure 1 is a schematic diagram of the vertical structure of a pump wheel;

[0026] Figure 3 is a schematic diagram of the vertical structure of a first inspection tool of the pump wheel machining precision inspection tool of the application;

[0027] Figure 4 is Figure 3 is a schematic diagram of the vertical structure of a first inspection tool of the pump wheel machining precision inspection tool of the application; Figure 1

[0028] Figure 5 is a schematic diagram of the vertical structure of a first inspection tool of the pump wheel machining precision inspection tool of the application;

[0029] Figure 6 is Figure 5 is a schematic diagram of the vertical structure of a first inspection tool of the pump wheel machining precision inspection tool of the application;

[0030] The reference signs are as follows:​

[0031] 10-pump wheel, 11-middle axis, 12-pump wheel end face, 13-annular groove, 14-first stop, 15-second stop, 16-blade, 17-pump wheel cavity;

[0032] 20-first inspection tool, 21-first inspection part, 211-first side wall surface A, 212-first side wall surface B, 213-first end surface, 22-first positioning part, 221-first bottom surface A, 222-first side end surface A, 223-first bottom surface B, 224-first side end surface B;

[0033] 30-second inspection tool, 31-second inspection part, 311-second side wall surface A, 312-second side wall surface B, 313-second end surface, 32-second positioning part;

[0034] 1-first containing space, 2-second containing space. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and effect of the utility model more clear and definite, the following will make further detailed description on the technical scheme of the utility model through specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model.

[0036] Please refer to Figures 1-2 , Figure 1 The utility model discloses a kind of pump wheels 10 of speed-regulating type fluid coupling, as shown in the three-dimensional structure of Figure 2 As shown in the partial structure of the vertical cross section of the middle axis 11 of the pump wheel 10 in the utility model, the middle axis 11 of the pump wheel 10 is arranged along the direction of gravity, the upper end of the pump wheel 10 is provided with the pump wheel end face 12 perpendicular to the middle axis 11, the pump wheel end face 12 is provided with the annular groove 13 concave downward, the inner side of the pump wheel end face 12 close to the middle axis 11 is provided with the first stop 14 around the inner circle of the annular groove 13, the outer side of the pump wheel end face 12 away from the middle axis 11 is provided with the second stop 15 around the outer circle of the annular groove 13, a plurality of blades 16 are uniformly distributed in the annular groove 13 along the radial direction of the pump wheel 10, and the pump wheel cavity 17 is constructed between the part of the inner wall of the annular groove 13 and the adjacent two blades 16.

[0037] Please refer to Figures 3-4The application provides a pump wheel machining precision checking tool, which is used for checking whether the machining precision of a pump wheel 10 meets the requirements. The checking tool comprises a first checking tool 20, and the first checking tool 20 comprises a first checking part 21. The outer peripheral contour of the first checking part 21 is consistent with the inner wall contour of an annular groove 13 constituting a pump wheel cavity 17. The first checking part 21 is configured to be inserted into any one of the pump wheel cavities 17, so that one side wall of the first checking part 21 is in close contact with the side wall of one blade 16 constituting the pump wheel cavity 17, and another side wall of the first checking part 21 is in close contact with the side wall of another blade 16 constituting the pump wheel cavity 17 and the inner wall of the annular groove 13 constituting the pump wheel cavity 17, and a first containing space 1 (as shown in the figure) is formed between the another side wall of the first checking part 21 and the inner wall of the annular groove 13 constituting the pump wheel cavity 17. The first containing space 1 is configured to allow light to enter. Figure 4

[0038] It can be understood that the first checking part 21 is alternatively in close contact with the side wall of any one blade 16 constituting the pump wheel cavity 17, that is, the first containing space 1 can be formed on the left side of the first checking part 21 or on the right side of the first checking part 21, and the application does not limit this.

[0039] The pump wheel machining precision checking tool provided by the application is used in the following manner. After the first checking part 21 of the first checking tool 20 is inserted into the pump wheel cavity 17 of the pump wheel 10 to be checked, a first containing space 1 is formed between the first checking part 21 and the inner wall of the pump wheel cavity 17. The existence of the first containing space 1 makes the first checking part 21 not completely close the cavity opening of the pump wheel cavity 17 of the pump wheel 10 to be checked, and light can enter from the outside of the first checking part 21 through the first containing space 1. If the cavity type of the pump wheel cavity 17 to be checked meets the standard, there is no gap between the part of the first checking part 21 in close contact with the inner wall of the pump wheel cavity 17, and light will not leak out from the other side of the first checking part 21. If the cavity type of the pump wheel cavity 17 to be checked does not meet the standard, there will be gaps between the part of the first checking part 21 in close contact with the inner wall of the pump wheel cavity 17, and light will leak out from the gaps to the other side of the first checking part 21. Therefore, the detection personnel can accurately determine whether the cavity type of the pump wheel cavity 17 to be checked meets the standard by observing whether light leaks out from the other side of the first checking part 21, so as to determine whether the machining precision of the pump wheel 10 meets the requirements, thereby improving the accuracy of the pump wheel 10 machining precision checking, and the checking result is clear at a glance and is not limited by the narrow space of the cavity and the environment.

[0040] In addition, the pump wheel machining precision checking tool provided by the application has the advantages of simple structure, small size, convenient carrying, low manufacturing cost and convenient use, and is conducive to improving the efficiency of pump wheel 10 production.

[0041] Please refer to Figure 3 ​In some embodiments, the first inspection part 21 comprises a first side wall surface A 211 and a first side wall surface B 212 arranged oppositely, and a first end surface 213 connecting the first side wall surface A 211 and the first side wall surface B 212 from the outer periphery, wherein the first side wall surface A 211 is arranged to be completely fitted with the side wall of one of the vanes 16 constituting the pump wheel type cavity 17, or the first side wall surface B 212 is arranged to be completely fitted with the side wall of the other vane 16 constituting the pump wheel type cavity 17.

[0042] The profile line of the first end surface 213 is consistent with the inner wall profile line of the annular groove 13 constituting the pump wheel type cavity 17, and the first end surface 213 is arranged to be fitted with at least part of the inner wall surface of the annular groove 13.

[0043] In actual inspection operation, the first side wall surface A 211 of the first inspection part 21 can be fitted with the left vane 16 of the pump wheel type cavity 17 of the pump wheel 10 to be inspected, at this time the first containing space 1 is formed on the right side of the first inspection part 21, the light rays irradiate the first inspection part 21 from the outside of the first side wall surface B 212 via the first containing space 1, and whether the left part of the pump wheel type cavity 17 of the pump wheel 10 to be inspected conforms to the standard is determined by observing whether light leaks at the first side wall surface A 211; or the first side wall surface B 212 of the first inspection part 21 can be fitted with the right vane 16 of the pump wheel type cavity 17 of the pump wheel 10 to be inspected, at this time the first containing space 1 is formed on the left side of the first inspection part 21, the light rays irradiate the first inspection part 21 from the outside of the first side wall surface A 211 via the first containing space 1, and whether the right part of the pump wheel type cavity 17 of the pump wheel 10 to be inspected conforms to the standard is determined by observing whether light leaks at the first side wall surface B 212.

[0044] Through the inspection method of irradiating the first containing space 1 with light rays, the fitting of the first end surface 213 with the inner wall of the pump wheel type cavity 17 of the pump wheel 10 to be inspected can be determined, and the fitting of the first side wall surface A 211 and the first side wall surface B 212 with the side wall of the vane 16 of the pump wheel 10 to be inspected can also be determined, thereby significantly improving the efficiency of the inspection of the machining precision of the pump wheel 10. The inspection can be performed after the first pump wheel type cavity 17 of the pump wheel 10 is machined, thereby avoiding unnecessary troubles caused by subsequent machining errors.

[0045] In some embodiments, the first inspection tool 20 further comprises a first marker (not shown in the figure), which is uniformly coated on the first end surface 213, and at least one of the first side wall surface A 211 and the first side wall surface B 212 in a powder or glue form.

[0046] The first marker is configured to be transferred and adhered to the corresponding position of the inner wall of the annular groove 13 or the side wall of the vane 16 when the first marker is in contact with the inner wall of the annular groove 13 or the side wall of the vane 16.

[0047] The first marker can be a powder marker such as red lead powder, carbon powder, etc., or a gel marker such as blue oil, paint, etc., and the present application does not limit the first marker, so that the first marker can be uniformly applied to the first end surface 213 and at least one of the first side wall surface A 211 and the first side wall surface B 212, and can be transferred and adhered to the corresponding position of the inner wall of the annular groove 13 or the side wall of the blade 16 of the pump wheel 10 to be inspected.

[0048] In actual inspection operation, the pump wheel cavity 17 after processing is blown clean to prevent material debris and particle impurities in the cavity from affecting the fit of the first inspection part 21. The first marker can be uniformly applied to the first side wall surface A 211, the first side wall surface B 212, and the first end surface 213, and then the first inspection tool 20 is inserted into the pump wheel cavity 17 of the pump wheel 10 to be inspected, pressed so that the first side wall surface A 211 is fitted with the left blade 16 of the pump wheel cavity 17 of the pump wheel 10 to be inspected, or the first side wall surface B 212 is fitted with the right blade 16 of the pump wheel cavity 17 of the pump wheel 10 to be inspected, and the first end surface 213 is fitted with the inner wall of the annular groove 13 of the pump wheel cavity 17 of the pump wheel 10 to be inspected; after pressing for a period of time, the first marker can be fully transferred and adhered to the corresponding position of the inner wall of the pump wheel cavity 17, and then the first inspection tool 20 is slowly removed to prevent the first marker from being transferred incorrectly. The first marker can be viewed in a direct visual observation manner to check the continuity and uniformity of the first marker adhered to the inner wall of the pump wheel cavity 17 of the pump wheel 10 to be inspected, to determine the fit of the first side wall surface A 211, the first side wall surface B 212, and the first end surface 213 with the pump wheel cavity 17 of the pump wheel 10 to be inspected, and to further confirm whether the cavity type of the pump wheel 10 to be inspected meets the standard. In addition, the first marker can also be visually observed in a light-assisted irradiation manner to check the continuity and uniformity of the first marker adhered to the inner wall of the pump wheel cavity 17 of the pump wheel 10 to be inspected, to determine the fit of the first side wall surface A 211, the first side wall surface B 212, and the first end surface 213 with the pump wheel cavity 17 of the pump wheel 10 to be inspected, and to further confirm whether the cavity type of the pump wheel 10 to be inspected meets the standard, to improve the accuracy of the inspection.

[0049] The inspection method by the first marker transferred and adhered can directly show the fit of the first inspection part 21 with the inner wall of the pump wheel cavity 17 of the pump wheel 10 to be inspected, and the inspection method and the inspection method by light irradiation of the first containing space 1 are performed independently, i.e. when the inspection method by light irradiation of the first containing space 1 is used, the first marker is not provided on the first side wall surface A 211, the first side wall surface B 212, and the first end surface 213 to prevent the first marker from affecting the normal leakage of light.

[0050] It can be understood that, in actual inspection operation, the first marker can also be applied on only one of the first side wall surface A211 and the first side wall surface B212, and one side cavity of the pump wheel cavity 17 is inspected each time, so as to prevent the first marker applied on the corresponding first side wall surface of the first containing space 1 from affecting the accuracy of the single-side cavity inspection result.

[0051] Referring to Figures 3-4 In some embodiments, the first inspection tool 20 further comprises a first positioning part 22 fixedly connected to the first inspection part 21, and the first positioning part 22 extends at least partially outward from both ends of the first inspection part 21.

[0052] The first positioning part 22 is configured to limit the correct insertion of the first inspection part 21 into the pump wheel cavity 17, so that the first end surface 213 is in close contact with at least part of the inner wall surface of the annular groove 13, and one of the first side wall surface A211 and the first side wall surface B212 is in close contact with the side wall of the same-side blade 16 constituting the pump wheel cavity 17. The first positioning part 22 of the first inspection tool 20 limits the correct insertion of the first positioning part 22 into the pump wheel cavity 17, which stabilizes the first inspection part 21, prevents the first inspection part 21 from deviating or shaking after being inserted, and ensures the accuracy of the cavity type inspection result of the pump wheel cavity 17.

[0053] Referring to Figures 3-4 In a specific embodiment, the first positioning part 22 can be provided in a strip structure extending along the radial direction of the pump wheel 10, fixedly connected to the upper end of the first inspection part 21, and comprising a first bottom surface A221 connected perpendicularly to the first end of the first end surface 213 and extending outward, a first side end surface A222 connected to the outer end of the first bottom surface A221, a first bottom surface B223 connected perpendicularly to the second end of the first end surface 213 and extending outward, and a first side end surface B224 connected to the outer end of the first bottom surface B223. The first bottom surface A221 is configured to abutably contact the pump wheel end surface 12 close to the first stop part 14, and the first side end surface A222 is configured to abutably contact the first stop part 14. The first bottom surface B223 is configured to abutably contact the pump wheel end surface 12 close to the second stop part 15, and the first side end surface B224 is configured to abutably contact the second stop part 15. In this way, the first positioning part 22 is limited to be correctly clamped in the radial direction of the pump wheel 10 by the pump wheel end surface 12, the first stop part 14 and the second stop part 15, so that the first end surface 213, the first side wall surface A211 and the first side wall surface B212 of the first inspection part 21 are in close contact with the inner wall surface of the pump wheel cavity 17 at the correct position, and the problem of inaccurate inspection result caused by the deflection and shaking of the first inspection part 21 is prevented.

[0054] In the actual inspection operation, if the first bottom surface A221 and the first bottom surface B223 of the first positioning portion 22 cannot abut against the pump wheel end surface 12 of the pump wheel 10, or the first side end surface A222 cannot abut against the first stop portion 14 of the pump wheel 10, or the first side end surface B224 cannot abut against the second stop portion 15 of the pump wheel 10 after the first inspection portion 21 is correctly inserted into the pump wheel cavity 17 of the pump wheel 10 to be inspected, it can be directly inferred that the first inspection portion 21 cannot be closely attached to the corresponding inner wall surface of the pump wheel cavity 17 of the pump wheel 10 to be inspected, and the cavity type machining precision of the pump wheel 10 to be inspected does not meet the requirements, and needs to be corrected.

[0055] It can be understood that the main role of the first positioning portion 22 is to ensure that the first inspection portion 21 is correctly inserted into the pump wheel cavity 17 of the pump wheel 10 to be inspected. Even if the bottom surface and the side end surface of the first positioning portion 22 can abut against the pump wheel end surface 12 or the corresponding stop portion of the pump wheel 10 to be inspected, it cannot be directly inferred that the cavity type of the pump wheel 10 to be inspected meets the standard, and it is still necessary to further confirm whether the machining precision of the pump wheel cavity 17 of the pump wheel 10 to be inspected meets the requirements through the aforementioned light irradiation inspection method of the first containing space 1 or through the aforementioned first marker transfer adhesion inspection method.

[0056] In some embodiments, when the cavity type of the pump wheel 10 to be inspected is inspected through the first marker transfer adhesion inspection method, the first marker can also be uniformly applied on the first bottom surface A221, the first side end surface A222, the first bottom surface B223, and the first side end surface B224. Then, the continuity and uniformity of the adhesion of the first marker on the pump wheel end surface 12, the first stop portion 14, and the second stop portion 15 of the pump wheel 10 to be inspected are observed by visual observation, the fit of the first bottom surface A221 and the first bottom surface B223 with the pump wheel end surface 12 is judged, the fit of the first side end surface A222 with the corresponding end surface of the first stop portion 14 is judged, the fit of the first side end surface B224 with the corresponding end surface of the second stop portion 15 is judged, and then it is confirmed that the first inspection portion 21 is correctly inserted into the pump wheel cavity 17 of the pump wheel 10 to be inspected, so as to ensure the accuracy of the inspection result.

[0057] Please refer to Figure 3 In some embodiments, the first positioning portion 22 can be integrated with the first inspection portion 21, and the first inspection tool 20 is preferably made of stainless steel plate milling or wire cutting to process the first inspection portion 21 and the first positioning portion 22. After processing, the sharp corners of the first inspection portion 21 and the first positioning portion 22 can be manually polished to be smooth, and then the surface of the first inspection portion 21 and the first positioning portion 22 can be ground flat by using a flat grinding machine. Finally, the processed first inspection tool 20 is placed on the design drawing of the first inspection tool 20 printed in 1:1 to be compared, so as to ensure the accuracy of the processing of the first inspection tool 20 itself.

[0058] Referring to Figure 5 In some embodiments, the inspection tool further comprises a second inspection tool 30, the second inspection tool 30 comprising two oppositely arranged second inspection parts 31 and a second positioning part 32 connecting the two second inspection parts 31 from one end, a second containing space 2 being formed between the two second inspection parts 31 and the second positioning part 32, the second containing space 2 being configured to insert and conform to any one blade 16 constituting the pump wheel cavity 17.

[0059] Since the pump wheel cavity 17 is formed by the adjacent two blades 16 of the pump wheel 10 and the part of the inner wall of the annular groove 13, the shape, size, thickness and other characteristics of the blade 16 of the pump wheel 10 have a direct impact on the overall performance of the pump wheel 10. The first inspection tool 20 is mainly used to check whether the shape and size of the cavity type of the pump wheel cavity 17 and the side wall of the blade 16 meet the standard, but it cannot directly check whether the processing thickness of the blade 16 meets the standard.

[0060] To solve this problem, the second inspection tool 30 is provided, which can determine whether the processing thickness of the blade 16 meets the processing precision requirement through the conforming condition of the second containing space 2 and the blade 16 of the inspected pump wheel 10. In actual inspection operation, the second inspection tool 30 can be inserted into one of the blades 16 of the pump wheel cavity 17 of the inspected pump wheel 10 through the two second inspection parts 31 and the second positioning part 32, until the top surface of the blade 16 abuts against the bottom surface of the second positioning part 32, whether the second inspection tool 30 is inserted in place can be determined by left and right shaking. After the second inspection tool 30 is inserted in place, light can be irradiated from the outside of one of the second inspection parts 31, and whether there is light leakage at the other second inspection part 31 can be observed by visual observation, to determine whether the processed blade 16 completely conforms to the second containing cavity, and further determine whether the processing thickness of the blade 16 of the inspected pump wheel 10 meets the processing precision requirement, the inspection operation is simple and convenient, and the accuracy of the inspection result is high.

[0061] Referring to Figures 5-6 In some embodiments, the second inspection part 31 comprises a second side wall surface A311 and a second side wall surface B312 oppositely arranged, and a second end surface 313 connecting the second side wall surface A311 and the second side wall surface B312 from the outer periphery, wherein the two second side wall surfaces B312 of the two second inspection parts 31 correspond to each other, and the second containing space 2 is formed between the two second side wall surfaces B312 and the bottom surface of the second positioning part 32. The second side wall surface B312 is arranged to completely conform to one of the side walls of any one blade 16 constituting the pump wheel cavity 17.

[0062] The contour line of the second end surface 313 is consistent with the inner wall contour line of the annular groove 13 constituting the pump wheel cavity 17, and the second end surface 313 is arranged to be able to be in close contact with at least part of the inner wall surface of the annular groove 13.

[0063] In some embodiments, the second inspection tool 30 further comprises a second marker (not shown), which is uniformly coated in powder or glue on the two second side wall surfaces B312 of the two second inspection portions 31; or, the second marker is uniformly coated in powder or glue on the inner wall surface of the second accommodating space 2.

[0064] The second marker is configured to be transferred and adhered to the corresponding position of the side wall or top surface of the blade 16 when the second marker is in contact with the side wall or top surface of the blade 16 constituting the pump wheel cavity 17.

[0065] The second marker can be a powder marker such as red lead powder, carbon powder, etc., or a glue marker such as blue oil, paint, etc., which is not limited in the present application, so that the second marker can be uniformly coated on the second side wall surface B312 and the bottom surface of the second positioning portion 32, and can be transferred and adhered to the corresponding position of the side wall or top surface of the blade 16 of the inspected pump wheel 10.

[0066] In actual inspection operation, the machined pump wheel cavity 17 and blade 16 are first blown clean to prevent material debris and particulate impurities in the cavity from affecting the close contact of the second inspection portion 31. The second marker can be uniformly coated on the second side wall surface B312 and the bottom surface of the second positioning portion 32 constituting the second accommodating space 2, and then the two oppositely arranged second inspection portions 31 are inserted into the corresponding blades 16 of the inspected pump wheel 10 until the top surface of the blade 16 abuts against the bottom surface of the second positioning portion 32, so that the two second side wall surfaces B312 are respectively in close contact with the blade 16 of the inspected pump wheel 10, and the second end surface 313 is in close contact with the top surface of the blade 16 of the inspected pump wheel 10. After pressing for a period of time, the second marker can be fully transferred and adhered to the corresponding position of the blade 16 of the inspected pump wheel 10, and then the second inspection tool 30 is slowly removed to prevent the second marker from being transferred incorrectly. The continuity and uniformity of the second marker adhered to the blade 16 of the inspected pump wheel 10 can be observed by direct visual observation to determine the fit of the second side wall surface B312 and the second end surface 313 with the blade 16 of the inspected pump wheel 10, and to confirm whether the thickness of the blade 16 of the inspected pump wheel 10 meets the standard. In addition, the continuity and uniformity of the second marker adhered to the blade 16 of the inspected pump wheel 10 can also be observed by visual observation with light assisted irradiation to determine the fit of the second side wall surface B312 and the second end surface 313 with the blade 16 of the inspected pump wheel 10, and to confirm whether the thickness of the blade 16 of the inspected pump wheel 10 meets the standard, so as to improve the inspection accuracy.

[0067] The second accommodating space 2 and the blade 16 of the pump wheel 10 to be inspected can be visually checked for conformity by the inspection method of the second marker transfer adhesion, which is independent of the inspection method of the light irradiation from the outside of one of the second inspection portions 31. That is, the second marker is not arranged on the second side wall surface B312 and the second end surface 313 to prevent the second marker from affecting the normal light leakage when the inspection method of the light irradiation from the outside of one of the second inspection portions 31 is used.

[0068] In some embodiments, the interval between the two second side wall surfaces B312 of the two second inspection portions 31 can be arranged to remain consistent from the end close to the second positioning portion 32 to the end away from the second positioning portion 32. This structure design makes the interval between the two first side wall surfaces B212 consistent at all places, which is suitable for inspecting the blade 16 with consistent thickness at all places and does not hinder the normal insertion of the blade 16 into the second accommodating space 2.

[0069] Please refer to Figure 5 In some embodiments, the interval between the two second side wall surfaces B312 of the two second inspection portions 31 can also be arranged to gradually increase from the end close to the second positioning portion 32 to the end away from the second positioning portion 32. This structure design makes the interval between the two second side wall surfaces B312 gradually increase from top to bottom, so that the second accommodating space 2 has an outwardly opening structure, which is suitable for inspecting the blade 16 with gradually increasing thickness from top to bottom, and facilitates the insertion of the second inspection tool 30 into the corresponding blade 16 of the pump wheel 10 to be inspected from top to bottom, thereby reducing the problem of the second marker on the second side wall surface B312 being transferred and adhered to the blade 16 at a misaligned position during the insertion of the second inspection tool 30 into the blade 16, and ensuring the accuracy of the inspection results.

[0070] In some embodiments, the second inspection portion 31 is configured to be insertable into and conformable with the first accommodating space 1.

[0071] The pump wheel cavity 17 has a certain width in the circumferential direction of the pump wheel 10, and the first inspection tool 20 can check whether one side of the pump wheel cavity 17 conforms to the standard by two inspection operations, respectively. However, due to the existence of the first accommodating space 1, the first inspection tool 20 cannot independently realize the width inspection of the pump wheel cavity 17.

[0072] To solve this problem, the second inspection part 31 of the second inspection tool 30 is arranged to be inserted into the first accommodating space 1 and matched with the first accommodating space 1, and the machining width of the pump wheel cavity 17 in the circumferential direction of the pump wheel 10 can be judged by the matching of the second inspection part 31 and the first accommodating space 1. In the actual inspection operation, after the machining precision of the two sides of the cavity of the pump wheel 10 to be inspected is determined to meet the requirements by the first inspection tool 20 in combination with the light irradiation or the first marker transfer adhesion, the second inspection tool 30 is inserted into the corresponding blade 16 forming the first accommodating space 1, and the corresponding second inspection part 31 is inserted into the first accommodating space 1. After being inserted in place, the light can be irradiated from the outside of the other second inspection part 31 in the adjacent pump wheel cavity 17, and whether the second inspection part 31 is completely matched with the first accommodating cavity can be judged by observing whether there is light leakage on one side of the first accommodating space 1, so as to further judge whether the machining width of the pump wheel cavity 17 of the pump wheel 10 to be inspected meets the machining precision requirements. The inspection operation is simple and convenient, and the accuracy of the inspection result is high.

[0073] Please refer to Figures 5-6 In some embodiments, the second positioning part 32 can be integrated with the two second inspection parts 31, and the second inspection tool 30 is preferably made of stainless steel plate milling or wire cutting to process the second inspection part 31 and the second positioning part 32. After processing, the sharp corners of the second inspection part 31 and the second positioning part 32 can be manually polished to be smooth, and then the surfaces of the second inspection part 31 and the second positioning part 32 are ground flat by using a flat grinding machine. Finally, the processed second inspection tool 30 is placed on the design drawing of the second inspection tool 30 printed in 1:1 to compare, so as to ensure the accuracy of the second inspection tool 30 itself.

[0074] In some embodiments, the inspection tool further comprises a light source (not shown in the figure), which is configured to emit light to irradiate the first accommodating space 1 or the outside of the second inspection part 31, so as to facilitate the inspection personnel to judge whether the machining precision of the pump wheel 10 meets the requirements by visually observing the light leakage.

[0075] The light source can be a commercially available flashlight, LED lamp or the like, or a special lamp designed for pump wheel 10 machining precision inspection, so as to realize the adjustment of the light source irradiation angle and luminous brightness, which is not limited in the present application. As long as the light can be emitted outward and irradiate the first inspection tool 20 and the second inspection tool 30 to realize the machining precision inspection of the pump wheel 10.

[0076] The above description is only an embodiment of the present application, and does not limit the patent range of the present application. Any equivalent structure or equivalent process conversion, or direct or indirect application in other related technical fields based on the content of the present application, are also included in the patent protection range of the present application.

Claims

1. A pump wheel machining precision inspection tool, characterized in that, The inspection tool comprises a first inspection tool (20), the first inspection tool (20) comprises a first inspection part (21), the outer peripheral contour of the first inspection part (21) is consistent with the inner wall contour of the annular groove (13) constituting the pump wheel cavity (17), the first inspection part (21) is configured to be inserted into any one of the pump wheel cavities (17), so that one side wall of the first inspection part (21) is fitted with the side wall of one of the blades (16) constituting the pump wheel cavity (17), and the other side wall of the first inspection part (21) and the inner wall of the annular groove (13) constituting the pump wheel cavity (17) form a first containing space (1), the first containing space (1) is configured to allow light to enter.

2. The pump wheel machining precision inspection tooling of claim 1, wherein, The first inspection part (21) comprises a first side wall surface A (211) and a first side wall surface B (212) arranged opposite to each other, a first end surface (213) connecting the first side wall surface A (211) and the first side wall surface B (212) from the outer periphery, wherein the first side wall surface A (211) is arranged to be completely fitted with the side wall of one of the blades (16) constituting the pump wheel cavity (17); or the first side wall surface B (212) is arranged to be completely fitted with the side wall of the other blade (16) constituting the pump wheel cavity (17); The contour line of the first end surface (213) is consistent with the inner wall contour line of the annular groove (13) constituting the pump wheel cavity (17), and the first end surface (213) is arranged to be fitted with at least part of the inner wall surface of the annular groove (13).

3. The pump wheel machining precision inspection tooling of claim 2, wherein, The first inspection tool (20) further comprises a first marker, the first marker is uniformly coated on the first end surface (213) and at least one of the first side wall surface A (211) and the first side wall surface B (212) in a powder or glue form; Wherein, the first marker is configured to be transferred and adhered to the corresponding position of the inner wall of the annular groove (13) or the side wall of the blade (16) when it is in contact with the inner wall of the annular groove (13) or the side wall of the blade (16).

4. The pump wheel machining precision inspection tooling of claim 2, wherein, The first inspection tool (20) further comprises a first positioning part (22), the first positioning part (22) is fixedly connected to the first inspection part (21), and the first positioning part (22) at least partially extends outward from both ends of the first inspection part (21); Wherein, the first positioning part (22) is configured to limit the correct insertion of the first inspection part (21) into the pump wheel cavity (17), so that the first end surface (213) is fitted with at least part of the inner wall surface of the annular groove (13), and one of the first side wall surface A (211) and the first side wall surface B (212) is completely fitted with the side wall of the same side blade (16) constituting the pump wheel cavity (17).

5. The pump wheel machining precision inspection tooling of claim 1, wherein, The inspection tool further comprises a second inspection tool (30), the second inspection tool (30) comprising two oppositely arranged second inspection parts (31) and a second positioning part (32) connecting the two second inspection parts (31) from one end, a second containing space (2) being formed between the two second inspection parts (31) and the second positioning part (32), the second containing space (2) being configured to insert and conform to any blade (16) constituting the pump wheel type cavity (17).

6. The pump wheel machining precision inspection tooling of claim 5, wherein, The second inspection part (31) comprises oppositely arranged second side wall surface A (311) and second side wall surface B (312), and a second end surface (313) connecting the second side wall surface A (311) and the second side wall surface B (312) from the outer periphery, wherein the two second side wall surface B (312) of the two second inspection parts (31) correspond to each other, and the second containing space (2) is formed between the two second side wall surface B (312) and the bottom surface of the second positioning part (32); The contour line of the second end surface (313) is consistent with the inner wall contour line of the annular groove (13) constituting the pump wheel type cavity (17), and the second end surface (313) is arranged to be conformable to at least part of the inner wall surface of the annular groove (13).

7. The pump wheel machining precision inspection tooling of claim 6, wherein, The second inspection tool (30) further comprises a second marker, the second marker being uniformly coated in powder or glue on the two second side wall surface B (312) of the two second inspection parts (31); or the second marker is uniformly coated in powder or glue on the inner wall surface of the second containing space (2); Wherein, the second marker is configured to be in contact with the side wall or top surface of the blade (16) constituting the pump wheel type cavity (17), and is transferred and adhered to the corresponding position of the side wall or top surface of the blade (16).

8. The pump wheel machining precision inspection tooling of claim 7, wherein, The distance between the two second side wall surface B (312) of the two second inspection parts (31) remains consistent from one end close to the second positioning part (32) to one end away from the second positioning part (32), or gradually increases from one end close to the second positioning part (32) to one end away from the second positioning part (32).

9. The pump wheel machining precision inspection tooling of claim 5, wherein, The second inspection part (31) is configured to be inserted into and conform to the first containing space (1).

10. The pump wheel machining precision inspection tooling of any one of claims 1-9, wherein, The inspection tool further comprises a light source, the light source being configured to emit light.

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