An impeller inspection fixture

Abstract

The utility model relates to an impeller inspection fixture, comprising a base, a pin arranged on the base, a rotating shaft arranged between the pins, a limit mechanism adapted to different inner diameters, and a locking member for locking the position of the limit mechanism; the limit mechanism is arranged in the rotating shaft; the locking member is arranged in the rotating shaft; one end of the locking member is connected to the limit mechanism. The utility model solves the problem that the conventional runout detection mainly relies on a taper rod to fix the impeller, and then places it on a pin-type runout meter for runout detection. However, due to the taper, this measurement method causes a large deviation between the measured value and the actual value due to the linear contact between the impeller insert and the taper rod, which affects the stability of the product, and cannot be detected according to impellers with inner holes of different diameters.

Description

Technical Field

[0001] The utility model relates to the field of impellers, in particular to an impeller inspection tool. Background Art

[0002] In the existing technology, the impeller refers to the wheel disc equipped with moving blades, which is a component of the impulse turbine rotor, and can also refer to the general term for the wheel disc and the rotating blades installed on it. The impeller is the core component of the sewage pump for converting energy. The quality of its performance directly affects the overall performance of the pump, especially the blade inlet, which is related to the quality of the pump's cavitation performance. The impeller's vibration problem is particularly important in the small space of the entire impeller assembly, so this requires us to control this indicator.

[0003] The original conventional runout detection mainly relied on the taper rod to fix the impeller, and then placed it on a pin-type runout meter for runout detection. However, due to the taper, this measurement method caused a large deviation between the measured value and the actual value due to the linear contact between the impeller insert and the taper rod, which affected the stability of the product and could not be detected according to the impellers with different inner diameters. Utility Model Content

[0004] The embodiment of the present application provides an impeller inspection fixture, which solves the problem that the conventional runout detection in the prior art mainly relies on a tapered rod to fix the impeller, and then places it on a thimble-type runout meter for runout detection. However, due to the taper, this measurement method causes a large deviation between the measured value and the actual value due to the linear contact between the impeller insert and the tapered rod, thereby affecting the stability of the product and failing to perform detection on impellers with inner holes of different diameters.

[0005] The technical solution adopted in the embodiments of the present application is as follows.

[0006] An impeller inspection tool comprises a base, a pin arranged on the base, a rotating shaft arranged between the pins, a limiting mechanism adapted to different inner diameters and a locking piece for locking the position of the limiting mechanism; the limiting mechanism is arranged in the rotating shaft; the locking piece is arranged in the rotating shaft; one end of the locking piece is connected to the limiting mechanism.

[0007] As a further improvement of the above technical solution: a first plate is arranged on the rotating shaft; the first plate abuts against one side of the impeller; a thread groove is opened at one end of the rotating shaft; a second plate is threadedly connected to the thread groove; the second plate presses the other side of the impeller.

[0008] As a further improvement of the above technical solution: a first groove is provided on the rotating shaft; a second groove is provided on the side wall of the first groove; the limiting mechanism includes a threaded rod, an adjusting rod sliding in the first groove, a limiting member against the inner wall of the impeller and an anti-slip pad; the threaded rod rotates in the first groove; a first surface is provided on the adjusting rod; the limiting member slides in the second groove; a second surface is provided on the limiting member; the first surface corresponds to the second surface; a plurality of limiting members are provided in a circular array; and the anti-slip pad is provided on the limiting member.

[0009] As a further improvement of the above technical solution: a first block is arranged on the first surface; a third groove is opened on the second surface; and the first block slides in the third groove.

[0010] As a further improvement of the above technical solution: the first block corresponds to the third groove in shape; the first block and the third groove are isosceles quadrilaterals in shape.

[0011] As a further improvement of the above technical solution: the locking member is a worm gear.

[0012] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0013] 1. Due to the use of ejectors at both ends of the base, the ejector on one side can be disassembled and assembled, a rotating shaft is arranged between the ejectors on both sides, the rotating shaft is cylindrical, a first plate is arranged on one side of the rotating shaft, the first plate is fixedly connected to the rotating shaft, the other side of the rotating shaft is detachably connected to the second plate, a thread groove is arranged on the other side of the rotating shaft, the second plate is threadedly connected to the thread groove, the impeller is located between the first plate and the second plate, a first groove is arranged in the rotating shaft, the first groove is cylindrical, a second groove is arranged on the side wall of the first groove, and three groups of second grooves are arranged in a circumferential array, each group of second grooves is slidably connected to a limiting member, and a thread groove is rotatably connected in the first groove. A threaded rod, the threaded rod is passed through the adjusting rod, a first surface is opened on the adjusting rod, a second surface is opened at the bottom of the limiting member, the first surface corresponds to the second surface, a first block is arranged on the first surface, a third groove is opened on the second surface, the first block slides in the third groove, the first block corresponds to the shape of the third groove, the first block corresponds to the shape of the third groove and both are isosceles quadrilaterals, thereby preventing the first block from escaping from the third groove, an anti-slip pad is arranged on the limiting member, the anti-slip pad presses against the inner side wall of the impeller, a locking member is arranged in the rotating shaft, the locking member is a worm gear, the locking member drives the limiting member to press against the inner side wall of the impeller and prevents the limiting member from moving, thereby realizing the adaptation of impellers of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the impeller inspection fixture in the utility model.

[0015] Figure 2 It is a top view of the impeller inspection fixture in the utility model.

[0016] Figure 3 It is a cross-sectional view of the impeller inspection fixture in the utility model.

[0017] Figure 4 It is a cross-sectional view of the impeller inspection fixture in the utility model.

[0018] In the figure: 1. base; 2. ejector pin; 3. rotating shaft; 31. first plate; 32. threaded groove; 33. second plate; 34. first groove; 341. second groove; 4. limiting mechanism; 41. threaded rod; 42. adjusting rod; 421. first surface; 422. first block; 43. limiting member; 431. second surface; 432. third groove; 44. anti-slip pad; 5. locking member. DETAILED DESCRIPTION

[0019] The embodiment of the present application provides an impeller inspection fixture, which solves the problem that the conventional runout detection in the prior art mainly relies on a tapered rod to fix the impeller, and then places it on a thimble-type runout meter for runout detection. However, due to the taper, this measurement method causes a large deviation between the measured value and the actual value due to the linear contact between the impeller insert and the tapered rod, thereby affecting the stability of the product and failing to perform detection on impellers with inner holes of different diameters.

[0020] The technical solution in the embodiment of the present application is to solve the above problems, and the overall idea is as follows

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] An impeller inspection fixture comprises a base 1, a pin 2 arranged on the base 1, a rotating shaft 3 arranged between the pins 2, a limiting mechanism 4 adapted to different inner diameters and a locking member 5 for locking the position of the limiting mechanism 4; the limiting mechanism 4 is arranged in the rotating shaft 3; the locking member 5 is arranged in the rotating shaft 3; one end of the locking member 5 is connected to the limiting mechanism 4.

[0023] A first plate 31 is provided on the rotating shaft 3; the first plate 31 abuts against one side of the impeller; a thread groove 32 is provided at one end of the rotating shaft 3; a second plate 33 is threadedly connected to the thread groove 32; and the second plate 33 presses the other side of the impeller.

[0024] A first groove 34 is provided on the rotating shaft 3; a second groove 341 is provided on the side wall of the first groove 34; the limiting mechanism 4 includes a threaded rod 41, an adjusting rod 42 sliding in the first groove 34, a limiting member 43 against the inner wall of the impeller and an anti-skid anti-skid pad 44; the threaded rod 41 rotates in the first groove 34; a first surface 421 is provided on the adjusting rod 42; the limiting member 43 slides in the second groove 341; a second surface 431 is provided on the limiting member 43; the first surface 421 corresponds to the second surface 431; a plurality of limiting members 43 are provided in a circular array; and the anti-skid pad 44 is provided on the limiting member 43.

[0025] A first block 422 is disposed on the first surface 421 ; a third groove 432 is formed on the second surface 431 ; and the first block 422 slides in the third groove 432 .

[0026] The first block 422 and the third slot 432 have corresponding shapes; the first block 422 and the third slot 432 are isosceles quadrilaterals.

[0027] The locking member 5 is a worm gear.

[0028] Ejectors 2 are provided at both ends of the base 1, and the ejector 2 on one side can be disassembled and assembled. A rotating shaft 3 is provided between the ejector pins 2 on both sides. The rotating shaft 3 is cylindrical. A first plate 31 is provided on one side of the rotating shaft 3, and the first plate 31 is fixedly connected to the rotating shaft 3. The other side of the rotating shaft 3 is detachably connected to the second plate 33. A threaded groove 32 is provided on the other side of the rotating shaft 3, and the second plate 33 is threadedly connected to the threaded groove 32. The impeller is located between the first plate 31 and the second plate 33. A first groove 34 is provided in the rotating shaft 3, and the first groove 34 is cylindrical. A second groove 341 is provided on the side wall of the first groove 34. Three groups of second grooves 341 are arranged in a circular array, and a limiting member 43 is slidably connected in each group of second grooves 341. A threaded rod 41 is rotatably connected in the first groove 34, and the threaded rod 4 1 is penetrated through the adjusting rod 42, the adjusting rod 42 is provided with a first surface 421, the bottom of the limiting member 43 is provided with a second surface 431, the first surface 421 corresponds to the second surface 431, the first surface 421 is provided with a first block 422, the second surface 431 is provided with a third groove 432, the first block 422 slides in the third groove 432, the first block 422 corresponds to the third groove 432 in shape, the first block 422 corresponds to the third groove 432 in shape and both are isosceles quadrilaterals, thereby preventing the first block 422 from being separated from the third groove 432, the limiting member 43 is provided with an anti-skid pad 44, the anti-skid pad 44 abuts against the inner side wall of the impeller, the rotating shaft 3 is provided with a locking member 5, the locking member 5 is a worm gear, and the locking member 5 drives the limiting member 43 to abut against the inner side wall of the impeller and prevents the limiting member 43 from moving.

[0029] Since the base 1 is provided with ejector pins 2 at both ends, the ejector pin 2 on one side can be disassembled and assembled, a rotating shaft 3 is provided between the ejector pins 2 on both sides, the rotating shaft 3 is cylindrical, a first plate 31 is provided on one side of the rotating shaft 3, the first plate 31 is fixedly connected to the rotating shaft 3, and the other side of the rotating shaft 3 is detachably connected to the second plate 33, a threaded groove 32 is provided on the other side of the rotating shaft 3, and the second plate 33 is threadedly connected to the threaded groove 32, the impeller is located between the first plate 31 and the second plate 33, a first groove 34 is provided in the rotating shaft 3, the first groove 34 is cylindrical, a second groove 341 is provided on the side wall of the first groove 34, and three groups of the second grooves 341 are arranged in a circumferential array, each group of the second grooves 341 is slidably connected to a limiting member 43, a threaded rod 41 is rotatably connected in the first groove 34, and the threaded rod 41 is penetrated through the adjusting The section rod 42 and the adjusting rod 42 are provided with a first surface 421, and the bottom of the limiting member 43 is provided with a second surface 431, the first surface 421 corresponds to the second surface 431, a first block 422 is provided on the first surface 421, and a third groove 432 is provided on the second surface 431, the first block 422 slides in the third groove 432, the first block 422 and the third groove 432 have corresponding shapes, and the first block 422 and the third groove 432 have corresponding shapes and are both isosceles quadrilaterals, thereby preventing the first block 422 from escaping from the third groove 432, and an anti-skid pad 44 is provided on the limiting member 43, and the anti-skid pad 44 presses against the inner side wall of the impeller, and a locking member 5 is provided in the rotating shaft 3, and the locking member 5 is a worm gear, and the locking member 5 drives the limiting member 43 to press against the inner side wall of the impeller and prevents the limiting member 43 from moving, thereby achieving adaptation to impellers of different diameters.

[0030] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0031] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0032] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement of the above embodiments made according to the technical essence of the present invention, within the spirit and principles of the present invention, without departing from the content of the technical solution of the present invention, still fall within the protection scope of the technical solution of the present invention.

Claims

1. An impeller inspection fixture, characterized in that: The invention comprises a base (1), a pin (2) arranged on the base (1), a rotating shaft (3) arranged between the pins (2), a limiting mechanism (4) adapted to different inner diameters, and a locking member (5) for locking the position of the limiting mechanism (4); the limiting mechanism (4) is arranged in the rotating shaft (3); the locking member (5) is arranged in the rotating shaft (3); and one end of the locking member (5) is connected to the limiting mechanism (4).

2. The impeller inspection fixture according to claim 1, characterized in that: A first plate (31) is provided on the rotating shaft (3); the first plate (31) abuts against one side of the impeller; a thread groove (32) is provided at one end of the rotating shaft (3); a second plate (33) is threadedly connected to the thread groove (32); and the second plate (33) presses against the other side of the impeller.

3. The impeller inspection fixture according to claim 1, characterized in that: The rotating shaft (3) is provided with a first groove (34); a second groove (341) is provided on a side wall of the first groove (34); the limiting mechanism (4) comprises a threaded rod (41), an adjusting rod (42) sliding in the first groove (34), a limiting member (43) abutting against an inner wall of the impeller, and an anti-skid pad (44); the threaded rod (41) rotates in the first groove (34); the adjusting rod (42) is provided with a first surface (421); the limiting member (43) slides in the second groove (341); the limiting member (43) is provided with a second surface (431); the first surface (421) corresponds to the second surface (431); a plurality of limiting members (43) are provided in a circumferential array; and the anti-skid pad (44) is provided on the limiting member (43).

4. The impeller inspection fixture according to claim 3, characterized in that: The first surface (421) is provided with a first block (422); the second surface (431) is provided with a third groove (432); the first block (422) slides in the third groove (432).

5. The impeller inspection fixture according to claim 4, characterized in that: The first block (422) corresponds to the third groove (432) in shape; the first block (422) and the third groove (432) are isosceles quadrilaterals in shape.

6. The impeller inspection fixture according to claim 1, characterized in that: The locking member (5) is a worm gear.

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